US2947270A - Sewing machines - Google Patents

Description

Aug. 2, 1960 Filed Dec. 19, 1955 H. HACKLANDER SEWING MACHINES TIMW 4 Sheets-Sheet l INVENTOR .Hans Jlaaklander ATTORNEY 1960 H. HACKLANDER 2,947,270

SEWING MACHINES Filed Dec. 19, 1955 4 Sheets-Sheet 2 Fig.3.

mwzzvrozz JhnsJ/acklander BY l32--" ,ATT NEY 1960 H. HACKLANDER 2,947,270

sawmc MACHINES 4 Sheets-Sheet 3 Filed Dec. 19, 1955 x MW I INVENTOR Hans JJaekZandQ- Aug. 2, 1960 Filed Dec. 19, 1955 H. HACKLANDER SEWING MACHINES 4 Sheets-Sheet 4 INVENTOR Qlans Hacklander United States Paten 2,947,270 SEWING MACHINES Hans Hacklander, Warren Township, N.J., assignor to The Singer Manufacturing Company, Elizabeth, NJ., a corporation of New Jersey Filed Dec. 19, 1955, Ser. No. 553,806 8 Claims. (Cl. 112--258) The present invention relates to sewing machines and more particularly to sewing machines of the so-called hosiery seamer type in which the work is fed past the stitching mechanism by cup-type feed wheels, such as the machine disclosed, for example, in applicants prior Patent No. 2,518,987.

A primary object of this invention isto provide a hosiery seamer of improved design which is faster, subby way of cover-plates to the internal mechanism.

Another object of this invention is to provide, in a hosiery seamer, an arrangement of'the belt pulley internally of the.frame, together with a cover-plate therefor that conforms to the outer configuration of the frame,

and means for securing the cover-plate in position.

Another object of this invention is to provide an improved means for securing the top cover plate which, in accordance with the invention, has been combined with an oil-fill aperture for the frame.

Having in mind the above and other objects that will be evident from an understanding of this disclosure, the invention comprises the devices, combinations and arrangements of parts as illustrated in the presentlypreferred embodiment of the invention which is hereinafter set forth in such detail as to enable those skilledin the art readily to understand the function, operation, construction and advantages of it when read in conjunction with the accompanying drawings in which: Fig. 1 is a front elevational view, partly in section,

of a sewing machine embodying the present invention.

Fig. 2 is a vertical sectional view substantially through the center of the machine illustrated in Fig. 1. p

I Fig. 3 is a fragmentary plan view of the machine illustrated in Fig. 1,-but with the top cover-plate and handwheel removed.

Figs. 4 and 5 arehorizontal sectional views taken substantially on the lines 4 -4 and 55 of Fig. 2, respectively.

Fig. 6 is a fragmentary vertical sectional view taken substantially on the line 6-6 of Fig. 5.

Fig. 7 is a fragmentary vertical sectional view taken substantially on the line 7-7 of Fig. 3.

Fig. 8 is a fragmentary horizontal sectional view taken substantially on the line 8-8 of Fig.2.

Fig. 9 is a fragmentary detail view of one of the clips for securing in position the cover-plate for the belt compartment. 1

Fig. 10 is a detail plan viewcf the counterweight.

I The present invention is embodied in a sewing machine tric as hereinafter explained. The

cured by rigid fastening means. with a rigid fastening means, the

.of its seat and,

ice

generally similar to that 2,518,987. Accordingly, the present disclosure is limited to only that part of the machine that is believed to be necessary to form a complete understanding of the invention, reference being made to my prior patent for a more detailed disclosure of the various mechanisms and the function and operation thereof. .T

The machine illustrated in the drawings comprises a frame 1 having a vertically disposed hollow standard 2 carrying a laterally extending bracket-arm 3. The hollow interiorof the standard 2 comprises an oil-tight splash-lubrication compartment 4 which is closed atrthe top by a horizontal partition 5 in the frame and closed at the bottom by a base plate 6 secured to the standard by screws 7. The partition 5 serves to separate the compartment 4 from a compartment 8 which includes the hollow interior of the bracket-arm 3. 7 As best .seen'in Figs. 4 and 5, the standard 2 is quadrangular in horizontal cross-section having substantially flat sides including two short sides 9 and 10 and two long sides 11 and 12. The bracket-arm 3 is arranged to project laterally from the upper end of the standard 2 from the angle at the intersection of the long sides 11 and 12, outwardly across the angle at the intersection of the short sides 9 and 10. The long sides 11 and 12 are apertured to provide convenient access to the mechanism internally of the standard 2, which apertures are closed by plates 13 and 14. A threaded plug 15 (Fig. 5) is provided in the plate 14 to provide more convenient access to the interior of the frame for adjustment of the feed eccenpresent frame construction and arrangement of apertures is of particular advantage in providing access to the mechanism in the interior of the frame as is also hereinafter explained.

A top cover-plate 18 is provided for closing the upper portion of the belt compartment 8 of the bracket-arm 3, which, cover-plate is secured by a resilient connection comprising a spring 19 seated in a circular recess 20 formed in a depending boss in the cover-plate. spring 19 bears at its lower end against a spring seat which consists'of the-bottom of the recess 20, and at its upper end against the under side of the head of a screw 21. The screw 21 is threaded into a hollow stud 22 that extends loosely through an aperture in the bottom of the recess 20 and is threaded through a tapped opening in the partition 5 intothe lubrication compartment 4. The stud is locked by the nut 23. The stud 22 constitutes a filling aperture for introducing lubricant into the lubrication compartment 4. The lubricant can be drained from the lubrication compartment 4 by means of a drainplug 16, while the level of the lubricant in the compartment can be determined by a sight-gauge 17. -As heretofore constructed, cover-plates have been se- As will be apparent, mating surfaces where the cover-plate seats on the bracket must be accurate to avoid breaking the cover-plate as it is drawn up against its seat. On the other hand, if the cover-plate fastening means is not drawn tight, thecover-plate will vibrate and thus is noisy. The present resilient fastening means avoids both of these objections, i.e., if there are inaccuracies in the seating surfaces of the cover-plate 18 upon the bracket-arm 3, the cover-plate cannot be broken by drawing it up tightly to conform to the configuration at the same time, the resiliency of the fastening means will hold the cover-plate 18 securely so that it will not vibrate relatively to the bracket-arm 3. A main shaft '24 is arranged with its axis vertical in the lubrication compartment 4 of the standard 2 adjacent the junction of the long sides 11 and 12 and symmetrically with relation thereto. The shaft 24 (Fig. 2) is journaled for rotation in an upper bushing disclosed in my prior Patent No. I

25 and a lower bushing 26. The upper bushing 25 is secured in an aperture in the partition 5 by the screws 27 and the lower bush ng 26 is carried by a lug 28 extending into the lubrication compartment-4 from the angle at the juncture of the long ides 11- and 12 of the standard 2. At its upper and, the ,shaft 24cxtends through the upper bushing 25 to the exterior of the frame where it receives .a hand-wheel 29 secured thereon by screws 30, the cover-plate'18be1ng provided with a clearance aperture 31 to accommodate the hand-wheel 29. Theshaft24 is held against vertical movement by a collar 32 and the hub of a gear 33 which .are secured thereto by screws 34 and 35 and which engage the upper and lower ends respectively of the lower bushing The main shaft;24 is driven by the bevel gear 33 wh meshes with a similar gear 36 on a drive-shaft 37 arranged horizontally in the lubrication compartment 4 substantially parallel to the side '12 of the frame and journaled for rotation in bushings 38 and 39. The bushing 38 is secured in an aperturedjlug 40 in the side 11 of the standard 2 and the bushing 39 is secured by screws 41 to a partition 42. The partition 42, together with end partition 43 and top partition 44, define a belt-pulley compartment 45 within the confines of the frame, which compartment 45 is sealed from the lubrication compartment 4. Within the compartment 45, the shaft 37 has secured thereto .a belt-pulley 46 about whieh is entrained a driving belt 47 by means of which power is delivered to the machine. An elongated aperture 43 is provided in the plate 6 through which the belt runs. The cornpartment 45 is closed by a curved plate 49 which follows the contours of the sides and '12 of the standard ,2 to form a smooth surface therewith. The plate .49 is held in the desired position by four spring metal clips 50 (see Fig. 9 each of which comprises a sheet metal piece "51 having a rounded end 52 and secured to the inside of the plate 49 by a screw 53 extending through a slot 54 in the piece 51. The pieces 51 are secured to the plate 49 with the rounded ends 52 extending beyond the outline thereof, the slots 54 providing for this adjustment. When the plate 49 is placed in position, the ends 52 of the clips will be deflected and then will spring into a position behind the adjacent edges of the sides 10 and 12 and plate 6 to hold the plate 49 in position. To remove the plate 49 it is only necessary to pull the same, which isfacilitated by the thumbnail slot 54 (Fig. 5). A sheet metal member formed with angle brackets 55 (Figs. 5 and 6) is located along the edge of the end partition 43 to serve as a stop against which the'plate 49 is positioned.

The stitching mechanism of the machine includes an endwise reciprocating, horizontally arranged, needle-bar 56 journaled in a bushing 57 in a flat front wall 58 of the standard, which wall extends between the sides 9 and 10 at the upper portion of the standard. The front wall 58, which is normal to the bracket-arm 3, is designed to provide clearance space for the stitch forming and feeding mechanisms. At its outer end the needle-bar 56 carries a needle 59 secured thereto by a needle-clamp 60. Longitudinal reciprocation is imparted to the needle-bar 56 by a pitman 61 connected at one end to a cross pin 62 at the inner end of the needle-bar. The pitman 61 is ,conheated at its other end to a crank 63 on the main shaft 24.

A thread-carrying looper 64 is secured by a screw 64a to a clamp .65, the screw 64a extending through a slot in the shank of the looper to provide for adjustment of the looper. The clamp ,65 has a hub 66 that is mounted upon the end of a looper shaft 67 journaled for oscillation in a bushing 69 extending through a bearing lug 70 in the wall 58 of the frame. The looper shaft 67 is arranged in a horizontal plane with the axis thereof at an acute angle to the axis of the needle-bar 56 as shown in Fig. .4. The looper shaft 67 is held against endwise sliding in the bushing 69 by a collar 71 (Fig. 4) which abuts against the outer end of the bushing, and the hub of a crank-arm 72 on the shaft 67, which hub abuts against the inner end of the bushing. The crank-arm 72 carries 4 a ball-end crank pin 73 that is connected to one end of a pitman 74 that has a strap portion at the other end which embraces an eccentric 75 on the main shaft 24.

Means are provided for facilitating adjustment of looper 64 axially and circularly of the looper shaft 67. Toward this end, there is provided a sleeve or collar 76 on the outer end of the looper shaft 67, which collar is releasably secured to the shaft by a set screw 77. .An escutcheon 78 surrounds the bushing 69 and that portion of the shaft .67 adjacent the collar 71 as Well as the inner end of the collar 76. The escutcheon 78 is secured to the bushing 69 by a set screw 79. To adjust the looper 64 axially of the shaft 67, it is necessary only to release either the hub 66 of the looper clamp or the collar 76 from the shaft, depending upon the direction in which the looper must be adjusted, and slide the released element into the desired position using the other of the two elements as a reference. For example, if it were determined that the looper 64 had to be moved inwardly axially of the shaft 67 by five-thousandths of an inch, thesetscrew 77 is backed off to release the collar 76 which is then moved the required distance from the end of the hub 66. The hub 66 is still secured to the shaft and serves as a stationary reference point from which the required distance canbe measure, as by a feeler gauge. When properly positioned, the collar '76 is secured to the shaft 67 and the hub 66 is released from the shaft, moved up against the collar 76 and secured in this position. Also, if it is desired to turn the looper circularly about the shaft 67, it is only necessary to loosen the clamp 65 and turn the looper and clamp the required amount, the collar 76 functioning to retain the looper in its proper position lengthwise of the shaft 67. Of course, when the looper clamp 65 is removed, the collar will remain to indicate the proper setting therefor when it is replaced. This looper adjustment means forms the subject matter of divisional application Serial No. 648,528, filed March 26, 1957, now Patent No. 2,884,884, dated May S, 1959.

Cooperating with the needle 59 and looper 164 in the formation of three-thread overedge chain stitches is a second threaded looper 80 that is secured by a screw 81 to a clamp 82. The screw 81 also extends through a slot in the shank of the looper 80 to provide for adjustment of the looper. The clamp 82 is secured to the free end of a looper shaft 83 that is journaled for oscillation in a bushing 84 extending through a bearing lug 85 in the wall 58 of the machine frame. The shaft 83, like the shaft 67, is arranged preferably in the same horizontal plane as the looper shaft 67 and with the axis thereof at an acute angle to the axis of the needle-bar 56, the shaft 83 being arranged upon the opposite side of the needle-bar 56 from the shaft 67 and at nearly a right angle to the shaft .67. The looper shaft 83 is held against endwise sliding in the bushing 84by a collar 86 which abuts against the outer end of the bushing and the hub of a crank-arm 87 which abuts against the inner end of the bushing. The crank-arm 87, which is secured to the shaft 83, carries a ball-end crank pin 88 that is connected to one end of a pitman 89 having a strap portion at the other end thereof which embraces an eccentric 90 on the main shaft 24.

In the same manner as for the looper 64, means are provided for adjustment of the looper 3i) axially and circularly of the shaft 83, which means comprises a collar 91 fixed to the end of the shaft 83 by a set screw 92. The clamp 82 and collar 91 may be individually released from the shaft 83 and adjusted axially thereof using the other as a marker from which to gauge the adjustment. 7

Mounted upon the bracket 3 is a plate 94 (Figs. 1 and 3) that carries a tension device 95 having three pairs of tension disks 96 and a thread propoitioning means 97 for measuring the amount of each of the threads in the stitch structure. The plate 94 has formed integral therewith apertured thread-guid ng arms 98 and 99, the arm 98 being located to direct the threads from a supply to the tension device95 and the arm 99 being located to receive the thread from theproportioning means 97. From the arm 99, the first thread, or the one nearest the bracket 3, is guided by thread guiding arms th and 101 to the needle 59. The arm 104) is located to direct the needle thread toward the eye of the needle from a point above and at the same side of the needle-bar 56 as the looper shaft 83, and to the rear of the needle. The second or middle thread is guided by the thread guiding arm 100 to the looper 80 and the third or outer thread is-guided by the arm 100 to the looper 64. The arm 10%) is arranged to direct the looper threads toward the loopers from points above at the same side of the needlebar 56 as the looper shaft67, and substantially in a vertical plane including the line of feed of the machine.

In the operation of the stitching mechanism, the needle 59'is advanced to penetrate the work, and as it is withdrawn, it casts a loop of needle thread in the usual manner. The looper 64 is oscillated to enter this loop of needle thread, carrying'its own thread therethrough. At the end of the stroke of the looper 64, the looper 80 is oscillated to enter a loop in the thread of looper 64,'carrying its own thread therethrough. The looper 80 then proceeds to present its loop to the needle to be entered thereby upon its next work-penetrating stroke. The motions of the stitching elements are very simple in that each has only a single action, i.e., the needle 59 is reciprocatedand the loopers 64 and 80 are oscillated. At the 'same time,the paths of the stitching element'sbetween the various points of loop seizure, coupled with the very favorable threadl'eads, eliminate the need for separate take-up elements since each of the stitching'elements has been made to take up-its own thread as it is retracted; thus setting its own thread in the stitch. While in the above described stitching mechanism both of the loopers 64. and80 are fitted with its own thread ,and' the machine forms a three-thread seam, it will be obvious that the present machine may be fitted, to sew .a two-thread or a single-thread seam. When the looper .80 is removed anda spreader is substituted, the machine is adapted to form a two-thread chain stitch in the usual .manner, and when both the loopers 64 and 80 are removed and spreaders substituted therefor, the machine is adapted to forma single thread chain stitch. 1 Q As seen in Fig. '8, in the'usual manner a stitch finger 102 is supported from in front'of the point of stitch formation, and'a roller presser 103 of the type disclosed in 'my prior Patent No. 2,398,225 is'arranged'to the rear of the point of stitch formatio e l l The feeding mechanism of the present machine comprises apair ofopposed feed cups including an' outer feed cup 104 and an inner feed cup 105. 'The inner feed cup 105 ismounted' upon the upper end of a vertical faxisfeed shaft 106 journaled in bushings in'the standard .2 at the intersection of the short sides 9' and 10. 'At 'its lower end, the feed shaft 106 hasrnoun'tedthereo'n 'a gear 107, the standard 2 being provided with an extension 108 for enclosing the same. The gear 107 meshes with a similar gear 109 on the lower end of avertical axis feed-actuating shaft 110 journaled at its lower end in a bushing 111 in a bearing lug 112 which extends inwardly from the side of the standard, and at its upper end in a bushing 113 in the partition 5. Intermittent one-way rotation is imparted to the feed-actuating shaft 110, by means of a conventional one-way clutch 114 .havingan arm 115 connected by a pitman 116 to an adjustable eccentric 117 on the drive shaft 37. In comparison with the construction of my prior devices, placing the feed-eccentric 117 on the drive'shaft 37 not only provides a neater and more convenient arrangement from the standpoint of access for adjustment, repair and replacement, but alsogives a better balanced design and removes the intermittent load of the feed from the gear connection between the shafts 24 and 37. This construction of the feed drive means forms the subject matter actuating shaft projects into the compartment 8 which consists of the hollow interior of the bracketarm 3. Mounted upon the end of the feed-actuating shaft 110 within the compartment 8 is a pulley 118 which is connected by a belt 119 to a similar pulley 120 mounted upon the upper end of the feed shaft 121 whereby actuations of the feed-actuating shaft 110 will be transmitted to the feed shaft 121. To maintain the proper tension in the belt there is provided a belt tightener comprising a bracket 122 adjustably secured to the side wall of the bracket-arm 3 by a bolt 123 extending through an aperture in the side wall of the bracket-arm and through a slot 124 in the bracket 122, and tightened by a nut 125. The bracket 122 is arranged in the horizontal plane of thebelt 119 and includes a pair of laterally extending arms 126 between which is journaled a belt-engaging roller 127. 'The roller 127 is adapted to engage the adjacent run of the belt 119 and to deflect the same, thereby increasing the length of that run of the belt and elfecting a belt tightening action. The shafts 110 and 121 and the pulleys 118 and 120 are arranged so that the engaged runof the belt 119 is at an acute angle, to the side wall of the bracket-arm 3, Thus, as the bracket 122 is adjusted toward the pulley 118, the roller 127 will increasingly deflect the belt 119 and lengthen that run of the belt. Conversely, as the roller 127 is moved toward the pulley 120, the deflection of the belt will be decreased and the tension pf'the belt will accordingly be decreased. This belt tightener is disclosed and claimed in divisional application Serial No. 648,529, filed March 26, 1957, now Patent No. 2,896,560, dated July 28,1959. A

To provide for introducing work between the feed cups, the outer feed cup 104 may be moved away from operative position in relation to the inner feed cup 105. Toward this end, the feed shaft 121 is journaled in bearings in a sleeve 128 that at its upper end extends into the split depending portion 129 (Figs. 1 and 7) of a feed cup supportinggate 130 and is clamped therein by a screw 131'.

The gate 130 is pivotally mounted in the bracket-arm 3 by between a contact piece 138 that engages the'under side of the lever 134 and an adjustable disc 139 arranged in the bore 136. The disc 139 has external threads that cooperate with internal threads in the bore 136 whereby vertical adjustment of the disc 139 in the bore136 will be effected when the disc 139 is rotated. To rotate the disc 139 there is provided a rod 140 that is preferably square in cross section and extends through an aperture of similar configuration in the disc. The rod 140 extends up wardly through the spring and through an aperture 141 in the lever 134. At its upper end, the rod is provided with a readily accessible screw driver slot 142 by means of which the rod 140 may be rotated.

At its free end, the lever 134 is connected to a pull rod 14-3 which provides for pivoting the lever 134 against the action of the spring 135 andthus separating the feed cups 104 and 105. The connection between the lever 134-and pull rod 143 comprises a head 144 upon the end of the pull rod 143 that operatively engages the lever 134 as the pull rod is tensioned, the pull rod 143 extending downwardly through an aperture in the lever 134. To prevent rattling between the pull rod andlever, a spring 145 is disp'osedbetwe'en the head 144 and the top of the lever 134, and a spacer 146 is provided to minimize the lost motion. The pull rod extends downwardly through the lubrication compartment 4 and is separated therefrom by a sleeve 147 surrounding the same. The sleeve 147, at its upper end, extends through the partition 5 and has an oil tight connection therewith, and at its lower end, is press fitted into a bore in a plug 148 having a flange 149. The plug 148 is seated in an aperture in the bottom plate 6 and secured therein by screws 150. The plug 148 is provided with an aperture 151 through which passes the lower end of the pull rod 143. The pull rod 143 is adapted to be connected to a foot treadle (not shown) by a chain 152. Depression of the free end of the lever 134 to separate the feed cups 104 and 105 is limited by an adjustable stop bolt 153 screwed through the lever 134 in position to contact the partition 5 and locked by a nut 154.

The advantages of this construction include easier assembly and a planar base without depending structure whereby the machine may be placed upon a supporting surface without the provision of special cut-outs. The latter advantage is significant in that the machine may be more readily handled than prior machines, and more conveniently stored and shipped. From an assembly standpoint, the sleeve 147 is fitted into the plug 148, and thereafter inserted into the machine. The rod 143 is inserted from the top after the other parts, including the spring 135, the gate 139 and lever 134 have been assembled. Thus, the assembly of the machine has been greatly simplified. This adjustable feed cup biasing means is disclosed and claimed in divisional application Serial No. 648,529, filed March 26, 1957.

In balancing the present machine, there has been provided a counterweight (Figs. 2 and designated generally at 155 that is secured to the main shaft 24. The counterweight 155 comprises a hub 156 having an aperture through which the main shaft 24 passes, an arm 157 extending outwardly from the hub, and a Weight 158 upon the end of the arm. The counterweight 155 is divided longitudinally into two substantially equal complemental parts, each including a portion of the hub, arm and weight. The two parts are secured together by screws 159. The counterweight is divided longitudinally in a manner such that the adjacent faces of the two parts contact at the extreme end of the weight and diverge slightly toward the hub. Thus, the depth of the portion of the aperture in each part is less than half the diameter of the main shaft, whereby, when the screws 159 are drawn up, the two parts initially contact along a line at the end of the weight 158, designated in Fig. 10 at 160, and then pivot about this line as the hub is drawn up against the main shaft 24 and thus clamped. The counterweight may be readily mounted or adjusted on or removed from the shaft simply by backing off the screws 159, thusseparating the two parts. This counterweight is disclosed and claimed in divisional application Serial No. 648,578, filed March 26, 1957.

The lubrication system of the disclosed machine is of known construction except for the oil sling that dispenses the lubricant and thus splash lubricates the mechanism within the compartment 4. The oil sling, designated generally at 161, comprises a central supporting section or circular disc 162, that is secured to the drive shaft 37 by screws 163 threaded into the hub of the gear 36. The periphery of the disc 162 is turned inwardly or, more specifically, it is formed to extend initially out of the plane of the disc to form a bottom 164 and terminates in a flange-like portion 165 parallel to the disc 162 and extending inwardly toward the axis of rotation of the disc to form a circular trough 166 open inwardly toward the center of rotation. The bottom 164 is provided with apertures 167 The oil sling is dimensioned with relation to the height of the drive shaft 37 upon which it is mounted and the designed level of the lubricant in the lubricant compartment 4, so that the trough 166 will have the lower portion thereof below the level of the lubricant'in the reservoir. Thus, when the machine is idle, the immersed portion of the trough will be filled with lubricant. When the machine is operated, this lubricant will be thrown by centrifugal force outwardly in substantially metered quantity through the apertures 167. This oil sling forms the subject matter of divisional application Serial No. 648,579, filed March 26, 1957.

Numerous alterations of the structure herein disclosed will suggest themselves to those skilled in the art. However, it is to be understood that the present disclosure reiates to a preferred embodiment of my invention which is for purposes of illustration only and not to be construed as a limitation of the invention. All such modifications which do not depart from the spirit of the invention are intended to be included within the scope of the appended claims.

Having thus described the nature of the invention, what I claim herein is: v

1. In a sewing machine of the hosiery seamer type, a frame including a standard having four sides comprising two pairs of adjacent substantially identical sides, a bracket-arm carried by said standard and extending from adjacent the intersection of a first pair of said pairs of sides outwardly, across the intersection of the second pair of said pairs of sides, a main shaft journaled for rotation in said frame longitudinally of said standard, a drive shaft journaled for rotation in said frame and operatively connected to said main shaft for imparting rotation thereto, stitching and feeding mechanisms carried by said frame, operative connections for actuating said stitching and feeding mechanisms from said main shaft and drive shaft, said first pair of sides having apertures therein for providing access to the interior of said frame, said apertures extending opposite the portions of said main shaft and drive shaft including said operative connections, and cover plates for closing said apertures.

2. In a sewing machine of the hosiery seamer type, a frame including a vertically arranged standard having four planar sides comprising a pair of adjacent substantially identical long sides and a pair of adjacent substantially identical short sides, a bracket-arm surmounting said standard and extending from adjacent the intersection of said long sides outwardly across the intersection of said short sides, stitching mechanism and feeding mechanism carried by said frame, drive means comprising a vertical axis main shaft journaled for rotation in said frame adjacent to the intersection of said long sides and a horizontal axis drive shaft journaled for rotation in said frame and operatively connected to said main shaft for imparting rotation thereto, operative connectrons between said drive means and said stitching and feeding mechanisms for actuating said mechanisms upon actuation of said drive means, said long sides having apertures therein for providing access to the interior of said frame, said apertures extending opposite the portlons of said main shaft and drive shaft including said operative connections, and cover plates for closing said apertures.

3. In a sewing machine of the hosiery seamer type, a frame including a vertically arranged hollow standard having four planar sides comprising two pairs of adjacent substantially identical sides, a removable plate for closing the bottom of said standard and a partition for closing the top of said standard for forming a closed lubrication compartment in said standard, a bracket-arm surmounting said standard and extending from adjacent the intersection of a first pair of said pairs of sides outwardly across the intersection of the second pair of said pairs of sides, said partition closing said bracket-arm from said lubrication compartment, stitching and feeding mechanisms carried by said frame and extending into said lubrication compartment, drive means for said stitching and feeding mechanisms comprising a vertical axis main shaft journaled for rotation in said frame adjacent to the intersection of said first pair of sides and a horizontal axis ENVY 6811011 compartment between said drive means and said stitching and feeding mechanisms, said first pair of sides having apertures therein for providing access to the interior of said lubrication compartment, and cover plates for closing said apertures.

4. In a sewing machine of the hosiery seamer type, a frame including a hollow standard having four planar sides comprising two pairs of adjacent substantially identical sides, a plate for closing the bottom of said standard and a partition for closing the top of said standard for forming a closed lubrication compartment within said standard, a main shaft journaled for rotation in said standard longitudinally thereof, a drive shaft journaled for rotation in said standard and operatively connected to said main shaft for imparting rotation thereto, a beltpulley compartment formed within the confines of said standard adjacent the intersection of one of the sides of a first one of said pairs of sides and the adjacent one of the sides of the second pair of sides, said sides being cut away about said belt-pulley compartment to expose the same, partitions separating said belt-pulley compartment from said lubrication compartment, said drive shaft extending through said belt-pulley compartment partitions into said belt-pulley compartment, a belt pulley mounted upon said drive shaft within said belt-pulley compartment, a cover plate conforming to the cut-away portion of said sides for closing said belt-pulley compartment and forming smooth continuations of said sides, and releasable means for holding said cover plate in position. 5. In a sewing machine of the hosiery seamer type, a

frame including a; vertically arranged hollow standard having four planar sides comprising two pairs of adjacent substantially identical sides, a plate for closing the bottom of ,said standard and a partition for closing the top of said standard for forming a closed lubrication compartment within said standard, a vertical axis main shaft journaled for rotation in said standard adjacent to the intersection of the sides of a first one of said pairs of sides, a horizontal axis drive shaft journaled for rotation in said standard substantially parallel to one of the sides of said first pair of sides and operatively connected to said main shaft for imparting rotation thereto, a beltpulley compartment formed within the confines of said standard adjacent the intersection of said one of said first pair of sides and the adjacent one of the sides of the second pair of sides, said sides being cut away about said belt-pulley compartment to expose the same, partitions separating said belt-pulley compartment from said lubrication compartment, said drive shaft extending through said belt-pulley compartment partitions into said beltpulley compartment, a belt pulley mounted upon said drive shaft within said belt-pulley compartment, a cover plate conforming to the cut-away portion of said sides for closing said belt-pulley compartment and forming smooth continuations of said sides, seating means for limiting said cover plate to the position in which the outer surface thereof is flush with the adjacent outer surfaces of said sides, and spring clips carried by said cover plate and adapted to engage, behind the edge of said sides about said cut away, said spring clips being deflected as said cover plate is inserted into or removed from position.

6. In a sewing machine, a frame including a hollow standard having side walls, a closed lubrication compartment within said standard, sewing mechanisms carried by said standard and including actuating elements within said lubrication compartment, a drive shaft journaled in said standard in said lubrication compartment, operative connections between said actuating elements and said drive shaft within said lubrication compartment, a belt-pulley compartment formed within said standard, partitions separating said belt-pulley compartment from said lubrication'compartment, said drive shaft extending intorsaidbelt -pulley compartment, a belt pulley mounted upon said drive shaft within said belt-pulley compartment, the side, walls of said standard adjacent to said belt-pulley compartment being cut away to expose said belt-pulley compartment, a cover plate conforming to, thecut-away portions of said walls to close said beltpulley compartment, seating means for limiting said cover plate to the position in which the outer surface thereof is flush with the adjacent outer surfaces of said sides, leaf spring clips, adjustable means for securing said clips to the inner surface of said cover plate with the free ends thereof extending beyond the edge of said cover plate whereby said clips will engage behind the edge of said sides about said cut-away to hold said cover plate in position and the free ends of said clips will be deflected as said cover plate is inserted into and removed from position, the free ends of said clips being formed into a cam-like surface to facilitate deflection of the free ends of said clips.

7. In a sewing machine having a frame including a standard with a closed lubrication compartment internally thereof, a bracket arm extending laterally from the upper portion of said standard, the upper portion of said bracket arm having an opening, a cover plate for closing said opening, and a partition disposed between said standard and bracket arm and closing the upper portion of said lubrication compartment, combined means for resiliently securing said cover plate to said bracket arm and for providing a filling aperture for said lubrication compartment, said means comprising a hollow stud extending through an aperture in said partition and secured to said partition, said cover plate having an aperture 'therethrough axially aligned with the aperture in said partition, a spring seat formed in the cover plate about I said aperture therein, said hollow stud provided with threads, a threaded element screwed to said hollow stud,

a laterally extending shoulder on said threaded element, and a resilient compression element disposed between said shoulder and said spring seat.

8. In a sewing machine having a frame including a standard with a closed lubrication compartment internally thereof, a bracket arm extending laterally from the upper portion of said standard, the upper portion of said bracket arm having an opening, a cover plate for closing said opening, and a partition disposed between the standard and bracket arm and closing the upper portion of said lubrication compartment, combined means for resiliently securing said cover plate to said bracket arm and for providing a filling aperture for said lubrication compartment, said stud having external threads at one end and internal threads at the other end, said partition having a threaded aperture through which the externally threaded end of said hollow stud is screwed, said cover plate having'an aperture axially aligned with the aperture in said partition and through which said hollow stud extends, a threaded element screwed into the internally threaded end of said hollow stud, said threaded element having a head defining a laterally extending shoulder that is adaptedto be seated againstthe end of said stud, a spring seat formed on said cover plate aboutsaid stud, and a resilient compression element disposed between said spring seat and the head of said threaded element.

(Other references on following page) means comprising a hollow 11 UNITED STATES PATENTS FOREIGN PATENTS Great Britainof '1894 Germany Oct. 9, 1933 Switzerland Nov. 1, 1952 France July 8, 1953 Great Britain July 6, 1955

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