US2689955A - Hug ring pliers - Google Patents

Description

SePt- 28, 1954 G. c. ARCI/x 2,689,955

HUG RING PLIERS `GILBERT C. GARCIA,

Sept. 28, 1954 G. c. GARCIA 2,689,955

HUG RING PLIERS Filed Aug. 25, 1947 2 Sheets-Sheet 2 GILBERT C. GARCIA Patented Sept. 28, 1954 HUG RING PLIERS Gilbert C. Garcia, San Antonio, Tex., assigner to The Heller Company, Cleveland, Ohio Application August 25, 1947, Serial No. 770,354

3 Claims.

This invention relates to stapling or fastener applying devices, and more particularly to a staple applying device for use with heavy staples, as for example those known as hug rings, adapted to the securing of material such as burlap to rods or springs, joining coil springs together or to rods, and similar applications.

An object of the invention is to provide a device of this type for use with fasteners which are partially formed and held in a magazine in side-by-side relationship, in which the mechanism for feeding the individual fasteners is very simply constructed.

For a fuller understandingof the nature and objects of the invention, reference is made to the following detailed description, taken in connection with the accompanying drawing, in

which: l

Fig. 1 is a plan view of the device in its normal position with a staple in the jaws, ready to be clinched;

Fig. 2 is a plan view of the device with the handles moved toward one another to effect the clinching of the staple;

Fig. 3 is a cross-sectional elevation taken on the line 3 3 of Fig. 1;

Fig. 4 is a detail view of the assembly of the spring-pressed follower;

Fig. 5 is a detail view of the jaws of the device as shown in Fig. 1, but with the upper portion cut away;

Fig. 6 is a detail view of the jaws of the device as shown in Fig. 2, but with the upper portion cut away; and

Fig. 7 is a cross sectional view on line 'I-'I of Fig. 3.

Referring now in detail to the drawings, a pair of S-shaped members, constituting levers, are indicated by reference numerals E and 1. The member 6 is provided with a handle 8 and a jaw 9, and member I is provided with a handle I0 and a jaw I I. A head piece is indicated generally by the numeral I2. The base I3 of the head piece is iiat and extends forwardly from the main body. A hole, provided in the forward portion of the base I3, accommodates a pivotal supporting means such as threaded pin or bolt I4 which acts as a pivot for members 6 and 'I. The head of the bolt I4 is countersunk so as not to project above the surface of the base I3, and is provided with a nut I5.

Channels I8 and I'I are provided on the upper side edges of base I3, extending in parallel relationship, and may be formed integrally with the base. The channels face each other and constitute a track. The plate I8 is slidably positioned in the channels I6 and Il. Abutments I9 on the plate I8 limit forward movement. Movement of the plate I 8 is coordinated with that of the members 6 and 'I by a toggle means comprising two arms 2D and 2|, each of which is pivotally connected at one end to the rear end of thekplate I8, by means of a rivet 22 or other suitable fastening means. The other end of arm 20 is pivotally connected tothe member 6 by means of a pin, or rivet 23 which passes through the inwardly extending upper and lower portions 8a. and 8b, respectively, of the handle 8. Similarly, the other end of arm 2| is pivotally connected to the member 'I by means of a pin, or rivet 24 which passes through the inwardly extending upper and lower portions lila and Ib, respectively, oi the handle I8. The location of the pins 23 and 24 is determined by the fact that when the plate I8 is in its forward position, limited by the abutments I9 as shown in Fig. 1, the distance between the bolt I4 and the pins 23 and 261 should be slightly less than the distance from the bolt I4 to the rivet 22. Thus, when the members a and 'I are moved toward one another, the p-late I8 will be moved backward until it reaches the position shown in Fig. 2.

Extending upwardly from the top of the channels I and Il are stiffening ribs 25 and 26 respectively. These ribs support the guides 2l and 28 which are disposed at right angles to the stiiening ribs and perpendicularly with respect to the base I3, and are spaced from the base at their lower ends a distance sufficient to allow the plate I8 to pass freely under them. The web 28, joined to ribs 25 and 2S and the guides 21 and 28, is placed a short distance above the plate I8. A resilient means, such as the coil spring 30 is attached at one end, as at 3I, to the web 29, and at the other end, as at 32, to the plate I8. Additional holes, such as 32a and 32h, may also be provided in the plate I8 so as to adjust the tension of the resilient means 3l), which normally urges plate I 8 forward to the position shown in Fig. 1.

The follower 33 is provided with a narrow central portion 34, and an extending rear portion 35.` The central portion 34 is disposed between the guides Z'I and 28 which permit vertical sliding movement of the follower 33. The rear portion 35 of the follower 33 is provided with a vertically extending hole 3S, through which passes the rod 3l. The lower end 38 of the rod extends through, and is positioned by, a

hole 39 provided in the web 28. The upper end of the rod is provided with a cap 48, against which the upper end of a resilient means, such as the coil spring 4I, is compressed. The lower end of the spring 4I presses against the rear portion 35 of follower 33. A hook 42, attached to one of the guides as at 43, engages an indented portion 44 of the cap 88 to assist in the positioning of the rod 3l. llVhen the machinefis in use a plurality of partially formed staples S are stacked on the base I3 below the follower 33. The channels i5 and Il at their forward ends are provided with inwardly extending projections Ia and Iia which, in effect, define a socket within which the lowermost of the staples S rests when the stapling machine is in the position shown in Fig. 1.

A magazine for the staples, having the `outer wall 60, is fitted over the guides 2l and 2,8 and houses the supply of staples and helps keep them in alignment with the follower member, as will be described. The magazine is shown in Fig. 3 in longitudinal section. In Fig. 1, the magazine is shown in cross section, and in Fig. 7, the magazine is shown in cross section as taken `on the line 1 1 of Fig. 3 and disassociated from other details so as to illustrate the relation between the magazine and the follower member clearly. The magazine includes side walls 60, which extend diagonally outwardly at an angle of about 45 from a connecting web 50a. Within the structure formed by the two walls 50 and the web 69a is another member substantially similar in shape but smaller, which is nested within the larger member. The smaller member has side walls 5l .corresponding to the side walls 50 and the walls El are connected by a web Bla, which is substantially parallel to the web 60a. The inner member with walls 6I vand `IiIais rigidly secured to and held riigdly spaced ,from the walls 60 and 60a by two web members 62 which are located at the ends of the magazine. This structure provides an open channel between the opposite pairs of walls S and 5I. Within that open channel, the arms of the follower member 33 project and are guided. Similarly, also., the stack of staple members S are positioned `and held in alignment in advance of the follower member. It will be observed that the magazine is open between the walls 60 and 5I at both ends.. The magazine may be secured to the device as, for example, to the guides `2'1 and 28 by any suitable means, either permanently or quick detachably.

The jaws 9 and Il are olset with respect to their Vrespective members B and I so as to place them in the same horizontal plane as the base I3. The jaws 9 and I I are also provided with a horizontally extending recess defined by front walls 45 and 46, and side walls 41 and l48, respectively, as shown in Figs. and 6. Within the recesses are catches 49 and 50, pivotally mounted on pins 5l .and 52 which extend through the recesses vertically. Resilient means, such as the small coil springs 53 and 54, normally urge the catches inwardly or convergently, this movement being limited by the ears 55 and 56, which abut against the side walls 4l and 48 respectively.

To operate the device the cap 40 is slipped out from under the hook 42, and the rod, with its associated follower 33 is lifted out. A set of partially formed staples S is then inserted in the magazine with the open ends of the staples between the walls 60 and 5I and facing toward the jaws 9 and II. The lowermost staple will then be resting on top of the plate I8 just to the rear of the extensions Ia and I'Ia. The follower 33 is then replaced on top of the uppermost staple and the rod 31 is pushed down until the lower end engages the hole 39, and the cap 40 engages the hook 42. The staples will then be in position as shown in Fig. 3. When the handles 8 and I0 are moved toward each other manually, the plate I8 will at the same time be moved rearwardly to a point just back of the staples, as shown in Fig. 2. When the plate has passed from under the lowermost staple it will drop down into the socket defined by the base I3 and the extensions Ilia and Ila. As the pressure is removed from the handles 8 and IU, the tension of spring 30 will pull the plate I8 forward and at the same time cause the members 6 and 'l to move away from each other, resulting in the opening of the jaws 9 and II. As the plate AIii moves forward it will push in front of it the staple which was just previously positioned in the socket. As the staple moves forward it will push the catches 49 and 50 outwardly against the pressure of the springs 53 Aand 54. When the staple reaches the end of its travel abutting lagainst the front walls 45 and 45 of the recesses the catches `49 and 50 will snap back into the position shown in Fig. 5, and thus prevent any backward movement of the staple when the clinching operation begins.

With the staple in position in the jaws 9 and I I, when the handles 8 and I0 are next moved toward one another .the jaws 9 and II will also be moved toward one another, causing the staple to be clinched, as shown by Figs. 2 .and 6. At the same time the plate I8 is moved rearwardly as previously described, and another staple will drop down into the socket, so that when the plate again moves forward on release of vpressure from the handles, this staple will replace in the jaws 9 and I I the one previously clinched.

I claim:

1. In a stapling machine, a pair of stapleclinching jaws of generally channel shape in cross section, handles for moving said jaws toward one `another for staple-clinching purposes, means for moving staples, one .at a time, to said jaws, and rigid means carried by .and pivotally mounted within the channels of said jaws for holding a staple during clinching thereof by the jaws.

2. In a stapling machine, a pair of stapleclinching ljaws lof generally -channel shape in cross section, handles for moving said jaws toward one another for staple-clinching purposes, means for moving staples, one at a time, to said jaws, and spring pressed rigid catches carried by and pivotally mountedA within the channels of said jaws for holding a staple during clinching thereof by the jaws.

3. In a stapling machine, a pair of vstapleclinching jaws, handles for moving said jaws toward one another forl staple clinching purposes, means for moving staples, .one at a time., to said jaws, and means carried 'by said jaws ,for holding a staple during .clinching thereof by the jaws, said holding means comprising a pair of rigid 4catch members, one Vpivotally mounted -adjacent an end -thereof on each jaw, and the free `ends of the .two catch members being spring urged to positions back of a staple in staple-climbing position in said jaws., with the consequent 'holding of the staple in position for l,jaw-clinc'h'ing purposes.

References Cited in the :file of this patent UNITED STATES PATENTS Number Name `Date 1,136,149 McGowan Apr.. 20, 1915 1,306,714 Parker ;e June 17, 1919 1,586,064 Briggs May 25, 19,26 1,948,865 Miller Feb. 27, 1934 1,970,101 Maynard Aug. 14, 1934 2,055,257 Maynard Sept. 22, 1936 2,150,332 Maynard Mar. 14, 1939 2,174,152 Curtiss Sept. `26, v1939 2,178,391 Curtiss Oct. 31, 1939 2,183,978 Sorenson Dec. 19, 19.39 2,205,690 Green June 25, 1940 2,208,819 Smith .July v23, 194.0 2,326,709 Watson Aug. 10, 1943 2,469,985 Pankonin May 1'0, 1949 2,555,903 Schroeder June i5. 11951

Images