US2720649A - Stapling machine - Google Patents

Description

Oct. 18, 1955 P. N. BRAUN 2,720,649

STAPLING MACHINE Filed Aug. 18, 1952 4 Sheets-Sheet 1 FIG 2 FIG! INVENTOR. Pfi/Z/p 72. Brcz 2122 BY 9W7 Oct. 18, 1955 P. N. BRAUN STAPLING MACHINE 4 Sheets-Sheet 2 Filed Aug. 18, 1952 Oct. 18, 1955 P. N. BRAUN 2,720,649

STAPLING MACHINE Filed Aug. 18, 1952 4 Sheets-Sheet 3 FIG 6 FIG 5 INVEIT/TOR. Ph/ 21;: 72. Bra/n m ArroRA/EY Oct. 18, 1955 P. N. BRAUN STAPLING MACHINE 4 Sheets-Sheet 4 Filed Aug. 18, 1952 M r m Mn M a W n w Y No B in- QM Iii lmdl T United States Patent STAPLING MACHINE Philip N. Braun, Syracuse, N. Y.

Application August 18, 1952, Serial No. 304,925

Claims. (Cl. 1-3) This invention relates to stapling machines of the type operable to eject and insert the prongs of a U-shaped staple through sheet material, and subsequently clinch the prongs on the opposite side of the material.

The invention has as an object a stapling machine embodying a structure which functions to insert and clinch a plurality of staples in the material with a predetermined spacing between the staples and without shifting the material relative to the stapling anvil.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

In the drawings- Figure 1 is a side elevational view of a stapling machine embodying my invention.

Figure 2 is a view, similar to Figure 1, illustrating the position of the stapling head and anvil during insertion of a second staple in the material.

Figure 3 is a top plan view.

Figure 4 is a view taken on line 4-4, Figure 3.

Figure 5 is a side elevational view embodying a moditied form with one of the side plates of the frame removed.

Figure 6 is a view taken on line 6-6, Figure 5.

Figure 7 is a top plan view of the structure shown in Figure 5.

Figure 8 is a view taken on line 8-8, Figure 5.

The machine includes a suitable frame, here shown as side plates 20 mounted on a base plate 21 in spaced apart relation, and an upwardly extending plate 23. The stapling head member 24 is mounted on a pin 25 extending through the side plates 20, the upper end portion of the head, or the staple ejecting member 26 thereof, being positioned against a bracket 27 carried by the rear plate 23.

The stapling anvil 28 is mounted on the upper end of an arm 30, the lower end of which is pivotally mounted between the side plates 20 on a pin 31 whereby the anvil is movable toward and from the stapling head. The end of the anvil 28, extending toward or confronting the stapling head 24, is formed with a pair of stapling surfaces represented by pairs of transversely extending grooves 32 forming one stapling surface, and grooves 33 forming a second stapling surface. These stapling surfaces are spaced apart radially from the pivot 31.

In Figures 1 to 4, the stapling anvil 28 is mounted on the arm 30 for movement in a direction radially of the pivot 31. In this arrangement, the anvil 28 is slidably mounted in the upper end portion of the arm 30, the anvil being of general T formation and the arm being formed with a vertically extending T slot, the upper end of which is closed by a plate 34 attached to the arm, as by screws 35. The anvil is formed with a recess 36 in which there is mounted a. helical compression spring 37 engaging the under side of the plate 34 and yieldingly 2,720,649 Patented 0a. 18, 1955 urging the anvil downwardly, or toward the pivot pin 31.

The arm 30 is also formed with a slot arranged centrally and communicating with the T slot in which the anvil is slidably mounted. A cam lever 40 is arranged in the slot 38, being pivotally mounted intermediate its ends on a pin 41. One end of the cam lever 40 is arranged to engage the under side of the head portion of the anvil 28, and the opposite end is bifurcated to receive the I portion 45 of a stem 46 slidably mounted in the arm for substantially vertical movement, the connection between the stem and the lever being by a pin 48.

The anvil 28 is normally in the lower position, indicated in Figure 1. When the stem 46 is depressed, the cam lever 40 urges the anvil 28 upwardly against the action of the spring 37 to the position shown in Figure 2.

In Figure 1, the upper clinching surface 32 is arranged in registration with the stapling head 24 for the reception of a staple. When the anvil 28 is moved radially from the pivot 31, as shown in Figure 2, the lower clinching surface 33 is brought into registration with the head 24, whereby two staples are inserted in the material in spaced apart relation by successive pivotal movements of the arm 30.

In Figures 1 and 2, the machine is illustrated in attaching a tag 50 to a garment or piece of material 52, such as is common practice in laundries and dry cleaning establishments. The upper end of the arm 30 is formed with a pair of laterally extending handle portions 54.

In Figures 5 to 8, the anvil 28 is fixedly mounted on the upper end of the arm 30. In this arrangement, the stapling head 24 is shifted radially from the pivot pin 31 to provide application of the second staple. In this construction, the supporting pin 25 of the stapling head is slidably mounted in slots 60 extending in a direction radial of the pivot pin 31 and being formed in brackets 62 attached to the rear plate 23. The lower end of the arm 30 is slotted to receive a cam member 66 positioned on the pivot pin 31. This cam member is ibrmed with a cam surface 67 terminating at each end in hook portions 68. The cam surface 67 engages the central portion of the pin 25, the arrangement being such that when the cam 66 is rotated about the axis of the pin 21 in a counterclockwise direction, Figure 5, the pin is elevated to the dotted outline position 69, efiecting elevation of the stapling head to bring it in registration with the upper clinching surfaces 32. When the cam 66 is in the full line position, shown in Figure 5, the stapling head is in registration with the lower clinch surface 33.

The cam 66 is actuated by means also carried by the arm 30 consisting of a stem 70 slidably mounted in the arm 30 and being provided with a collar 71 engaged by a helical compression spring 72 arranged in a notch 73 formed in the inner side of the arm 30. The spring 72 functions to normally maintain the stem 70 with the lower end 74 thereof about the periphery of the cam 66, permitting the arm 30 to be moved toward the head into stapling engagement to clinch the staple by the lower clinch surface 33. When the stem 70 is depressed, the lower end 74 thereof moves downwardly behind the cam, as shown in dotted outline at 75, Figure 5, whereupon movement of the arm 30 toward the stapling head efiects rotation of the cam 66 in a counterclockwise direction, Figure 5, elevating the head 24 so that the staple inserted through the material in this operation is clinched by the clinch surface 32.

What I claim is:

1. A stapling machine comprising a frame, a stapling head member, an arm pivotally mounted on the frame for movement toward and from the head member, said arm being provided with a pair of laterally extending handles, an anvil member carried by said arm and having a plurality of clinching surfaces spaced apart in a direction operable to shift one of said members radially of said pivot'toeffect. registration of the head member with a selected one of. said clinching surfaces.

2. A1 stapling machine comprising a frame, a stapling head member mounted, on the frame, an arm pivotally mounted-on. the frame for movement toward and from the stapling head member, an anvil member carriedbysaid arm for engagement with the stapling. head member and having: a pluralityof clinching surfaces spaced apart in a direction radial from the pivot of the arm, a manually operable rod slidably mounted in the arm, and mo.- tion transmitting means operable upon, sliding movement of, the rod to shift one of said members radially of said pivot to. effect registration of the; heady member with a selected one of said clinching surfaces. 7

3. A stapling machine comprising a frame, a stapling head member, an arm pivotally mounted on thefrarne for movement toward and from the stapling head, an anvil member carried. by said arm and having a plurality of clinching; surfaces spaced apart radially from said pivot, a manually operable rodcarried by said arm, and cam means operatively connected to said rod'and being; operable upon movement of the rod to shift one off said members to effect registration of said head member with a selected one of said clinching surfaces.

4. Av stapling machine comprising a frame, a stapling head mounted on the frame, an arm pivotally mounted the frame for movement toward and'from' said head,

an anvil carried by the arm and being formed with a plurality of clinching surfaces, and cam means operable to shift said stapling headiin a direction radial of said arm pivot to bring the stapling head in registration with a selected one of said clinching surfaces.

5. A stapling machine comprising a frame, a stapling head mounted on the frame, an arm pivotally mounted on the frame for movement toward and from said head, an anvil carried by thearm and being formed with a plurality of clinching surfaces, and cam means operable to shift said stapling head in a direction radial of said arm pivot to bring, the: stapling head in registration with a selected one of said clinching surfaces, and manually operable means carried by the arm to efiect operation of said cam.

References Cited in the file of this patent UNITED STATES PATENTS Germany 1931

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