US2222726A - Staple clip - Google Patents

Description

Nov. 26, 1940.

w. L. SOREN SON 2,222,726

STAPLE CLIP Filed April 21, 1939 INVENTOR W. Z Sarmswz may ATTORNEY Patented Nov. 26, 1940 UNITED STATES STAPLE CLIP Wendell L. Sorenson, Great Neck, N. Y., assignor to Elvira J. Sorenson, Great Neck, N. Y.

Application April 21, 1939, Serial No.- 269,170 1 1 7 Claim.

This invention relates to staple clips comprising a series ofstaples detachably connected in such manner that the staples may be individually separated from the staple clip by stapling apparatus in the stapling operation thereof, the present application being a continuation in part of my co-pending application Serial No. 220,613, filed July 22, 1938, which matured in Patent No. 2,183,972.

Heretofore staples of staple clips have been assembled by detachably connecting the staple legs and leg connecting portion of the staples in contiguous sidewise relation with the result that it is impossible to position .a staple of the staple clip in a desired position relative to material to be secured by the staple, or relative to a support to which material is to be secured by the staples of the staple clip, since in the use of such a staple clip in a stapling device the staple clip is supported in a channel member disposed with the outlet end in communication with the side of a channel for a slidable staple driver, and the staple clip is positioned or fed in the staple clip supporting channel member with the leading staple in the driver channel in the path of movement of the driver. In the use of the stapling device the outlet end of the driver channel, usually disposed in vertical position, is positioned relative to the material to be stapled when the staple driver is actuated, the driver first separating the leading staple from the staple clip and in successive sequence forcing the staple through the driver channel and driving the staple into the material to be stapled.

It is the object of the invention to provide an improved staple clip comprising a series of staples connected by breakable means and arranged in sidewise and longitudinal stepped relation with the leg connecting portion of the staples spaced from each other and adapted for engagement of feeding means to feed the staple clip in a stapling machine, and to provide a staple clip wherein the staple clip preparatory to stapling material by a staple of the clip is adapted to position the leading staple thereof in engagement with the material and in the position in which the material is secured by the staple.

A staple clip of this character is adapted for use in a stapling device including means to engage the leg connecting portion of a staple to feed the staple clip and dispose the leading or end staple of the staple clip relative to means adapted to position said staple in desired relation to or upon the material to be stapled, and then operative to separate said staple from the staple clip and clenching the staple to the material to secure material together or secure material to a support therefor by the staple.

In the drawing accompanying and forming a part of this application, Figure 1 is an elevational view of an embodiment of a staple of the staple clip.

Figure 2 is a front elevation of the staple clip.

Figure 3 is a side elevation of the staple clip looking toward the left of Figure 2. 10

Figure 4 is a rear elevation of the staple clip.

Figure 5' is a sectional View of the staple clip taken on the line 5-5 of Figure 4.

Figure 6 is a plan view, partly broken away, of a stapling device in connection with which the 15 staple clip is adapted to-be used.

Figure 7 is a sectional view taken substantially on the line 1-1 of Figure 6; and

, Figure 8 is a sectional view showing the manner of securing material to a support therefor by a staple of the staple clip and applied by the stapling device of Figures 6 and 7. While the staples utilized in carrying out the embodiment of the invention are shown as of circular form with the extremities of the staple legs extended inwardly, the staples may be of difierent form, for instance, the staples may be of a form wherein the leg connecting web portion of the staples is of different angular shape with the extremities of the staple legs directed 30 inwardly.

In carrying out the invention as shown in Figures 2 to 5, inclusive, a series of staples, which are first formed, are assembled in sidewise relation to extend in parallel planes oblique to the length of the staple clip, as shown in Figures 3 and 5, and arranged in longitudinal stepped relation with the leg connecting web portions ID of crown form of the successive staples spaced equidistantly from the leg connecting web of the 40 preceding staples with the legs of a successive staple in contact with the legs of the next preceding. staple and arranging the staples of the staple clip in rack formation, as shown in Figures 2 and 4, whereby the leg connecting web portions of the staples of the staple clip are adapted. for the engagement'oi means to feed the staple clip in a staple applying device or machine and for the engagement of means to prevent retrograde movement of the staple clip and thus retain the leading or end staple of the staple clip in predetermined position in the fed position of the staple clip. Should the staples be of circular form, as shown, the inwardly extending extremities lflaof the legs oithe successive staples of the staple clip intersect the preceding staples, as shown at Illb. The staples after or during the assembling of the same are detachably secured in assembled relation by a readily breakable material, and comprising a material more fragile than the material of the staples. While various materials are adapted for the purpose, this material comprises a suitable adhesive which is applied to the assembled staples as by spraying the adhesive material in a viscous state into the pockets formed at the points at which the legs of successive staples intersect the preceding staples, as shown at We. It will be obvious that the staples may be of a form wherein the staple legs extend parallelly from the leg connecting portion of the staple in which case the legs of the successive staples assembled in the staple clip are arranged in contiguous sidewise relation and the leg connecting portion of the successive staples are spaced from the leg connecting portion of preceding staples in the staple clip and arranging the leg connecting portions of the staples in rack formation adapted for engagement of means to feed the staple clip in a stapling device.

By the arrangement of staple clip described the clip may be fed in a stapling device successive predetermined distances equal to the spacing of the leg connecting web portions of the staples, and the leading or end staple engaged directly with the material to be stapled, or to secure material to a support therefor, such as securing upholstery H to a frame l2, as shown in Figure 8.

In Figures 6 and '7 there is illustrated a stapling device showing the manner of supporting the staple clip and whereby the leading staple of the staple clip is adapted to be engaged by the stapling device with material preparatory to stapling the same and the means to feed the staple clip to position the staples successively relative to means to apply pressure to and cause the staple legs of the leading staple to pierce the material to be stapled, separate said staple from the staple clip and secure the material by the staple.

The staple clip is engaged in a channel member l3 mounted on the side of a block M in the position thereof shown in Figure 7 with the leg connecting portions of the staples engaging the bottom of the channel and the staple legs of successive staples superposed to and intersecting thepreceding staple, as shown at [0b, and the legs of the leading or end staple extending inwardly of the successive staple, as shown at Illa. The opposite side M of the block inclines at an acute angle to and converges toward the side upon which the channel member is mounted and is undercut at one end, as at I 4". The leading or end staple of the clip in the fed position thereof engages a seat l5 in the side of a pair of jaws I 6 arranged at the ends of a pair of levers l1 pivotally mounted, as at 18, on the side M of the block M, the side of the jaws with the staple seat intersecting the end of the channel member at an obtuse angle thereto and projecting in substantially the same plane as the staples of the staple clip. The levers are urged by a spring IS in a direction with the jaws of the lever in spread or open position, as shown in Figure 6. The staple clip is fed by a pawl 20 pivotally mounted, as at 24, on and projecting forwardly and downwardly from a carrier 2| therefor fixed on a slide 22 slidably mounted in a slideway of a member 23 mounted on inwardly projecting portions I3 of the side walls of the channel member whereby the carrier with the pawl is adapted to have reciprocatory movement longitudinally of the channel member. The free end of the pawl is bifurcated for the free engagement of the leg connecting portion of the staple, as shown in Figure '7. The pawl is normally urged downwardly by a spring to predetermined position limited by the pivotal connection of the pawl with the pawlcarrier to engage the bifurcated end with the leg connecting portion of a staple, and as the pawl approaches the terminus of its forward or feeding movement the feeding pawl and the legs 25 of a bifurcated member of resilient material mounted on the pawl are yieldingly urged downwardly to assure the firm seating of the leading staple of the staple clip on the seat l5 of the jaws by a pin 26 extended laterally from the pawl engaging below an upwardly and rearwardly extending portion of a member 21 of resilient material fixed on the inwardly extending portion l3 of a side wall of the channel member, the parts being shown in the position shown in Figure 7 with the leading staple positioned on the jaw seat I5 and in position to be engaged by the stapling device with the material to be stapled. The pawl carrier is operatively connected to and reciprocated from the movement of the levers I! by a plate 28 fixed at one end to a side of and extending laterally from a lever [1, the opposite end portion of said plate extending substantially at a right angle inwardly of the lever and transversely of the pawl carrier and having a cam slot 28' therein engaged by a roller 29 loosely mounted on a headed stud 30 having threaded connection with the pawl carrier, as shown in Figure 7.

The normal position of the parts of the stapling device is as shown in Figure 7 with the staple clip fed to position with the leading staple engaging the seat at the side of the jaws It. In the stapling operation the stapling device is grasped by the levers l1 and manipulated to engage the leading staple of the staple clip carried thereby with the material to be stapled after which the levers are actuated to move the jaws IE toward each other, the jaws exerting pressure on and moving the legs of the leading staple of the staple clip toward each other and causing them to pierce the material and simultaneously separate said staple from the staple clip, and

then clinching the staple to the material. During this movement of the levers retrograde movement is imparted to the pawl carrier to move the feeding pawl 20 rearwardly, the bifurcated end of the pawl riding over and engaging the leg connecting web of the successive staple of the clip.

During the retrograde movement of the pawl the staple clip is held against participating movement by the recess-ed ends of the bifurcated legs 3| of a detent 32 engaging the leg connecting web of the staple successive to the end staple of the staple clip, the detent being pivotally supported at the end opposite the bifurcated end, as at 33, and yieldingly urged downwardly by a spring 34 toward the staple clip in the channel member l3. Thus by assembling the staples with the leg connecting portions predeterminedly spaced from each other the staple clip is adapted to be fed intermittently predetermined distances and position the leading staple relative to the staple releasing and clenching jaws I6 of the stapling device and in position to be engaged with the material to be stapled.

Having described my invention, I claim:

1. A staple clip comprising a series of like staples having the extremities of the legs extending inwardly assembled sidewise in parallel planes and ofiset longitudinally providing spaces between the leg connecting portion of successive staples and providing a'rack form in the staple clip and only the legs of a successive staple contactingthe legs of the next preceding staple, and the staples detachably united in assembled condition by a material more fragile than the material of the staples applied adjacent the point of contact of the staple legs.

2. As an article of manufacture, a staple clip comprising a series of crown shaped staples having the extremities of the staple legs extended in a direction toward each other assembled in sidewise parallel planes with the crown of successive staples spaced longitudinally from the crown of preceding staples and only the legs of successive staples contacting and intersecting the legs of the preceding staples, and the staples detachably united in a unitary structure by a readily breakable material applied adjacent the intersecting portions and point of contact of the staple legs.

3. As an article of manufacture, a staple clip comprising like staples of crown form having the extremities of the legs arranged to converge inwardly and spaced from each other assembled sidewise in parallel planes with successive staples offset longitudinally from preceding staples spacing the crown portion of successive staples from the crown portion of with the crown portion of the staples in rack form in the staple clip adapted for engagement of means'in a staple device to feed the staple clip, and the legs of successive staples contacting and intersecting the legs of preceding staples with the free ends of the legs of preceding staples projecting forwardly and being free of the legs of successive staples and adapting the leading staple of the staple clip to be engaged with the material to be stapled, and the staples detachably united in the staple clip by a material more fragile than the staples applied adjacent the point of contact of the staple legs.

4. A staple clip comprising a series of like stapreceding staples and ples of circular form assembled sidewise in parallel planes with successive staples offset longitudinally'from preceding staples and the leg connecting web portion of the staples spaced from each other andthe legs of successive staples intersecting and contacting the legs of preceding staples, and the-staples detachably secured together by a material more fragile than the material of the staples applied to the intersecting leg portions of the staples and exposing the entire leg connecting web portion of the staples in the staple'clip for engagement of means in a stapling device to feed the staple clip.

5. As an article of manufacture, a staple clip comprising a series of like staples assembled and adhesively united in sidewise parallel planesand longitudinally offset, spacing the leg connecting web portion of the staples equidistantly from each other and with said leg connecting web portions in rack form in the staple clip adapted for engagement of means in a stapling device for feeding the staple clip and the free ends of the legs of preceding staples extended forwardly of the legs of successive staples adapting the legs of the leading staple of the staple clip to be engaged with the material to be stapled preparatory to securing the material by the staple.

6. As an article of manufacture, a staple clip comprising a series of staples of circular form assembled in sidewise parallel planes and offset longitudinally with the leg connecting portion of the staples spaced from each other and the legs of successive staples intersecting the legs of preceding staples-and a fragile material applied to the intersecting portions of the staple legs detachably securing the staples together in the staple clip.

7. As an article of manufacture, a staple clip comprising a series of staples of circular form assembled in contiguous sidewise parallel planes with the leg connecting web portion of the staples equidistantly spaced from each other and the legs of a successive staple intersecting the legs of the next preceding staple, and the staples cemented together into a unitary structure.

WEN'DELL L. SORENSON.

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