US2107555A - Stapling machine attachment - Google Patents

Description

Feb. 8, 1938. J. L. WALSH STAPLING MACHINE ATTACHMENT FiledJuly 2, 1936 2 Sheets-Sheet l ATTORNEY,

J. L. WALSH 2,107,555

STAPLING MACHINE ATTACHMENT l Feb. 8, 1938.

Filed July 2, 1936 2 Sheets-Sheet 2 1NVENTOR- JOHN LEE WALSH ATTORNEY.

Patented Feb. s, 193s STAPLING MACHINE ATTACHMENT John Lee Walsh, Baltimore, Md., assignor to May Oil Burner Corporation,

Maryland a corporation of Application July 2, 1936, Serial No. 88,633

5 Claims.

This invention relates to stapling machine attachments and has particular reference to a device to be attached to hand stapling machines, whereby' the stapling machine will be adapted for usev in positions more remote from the operator than those in which such stapling machines areV ordinarily used land likewise in narrow or constricted situations where material is to be fastened toA surfaces or to articles difficult of access.

The type'of stapling machine to which the present invention is particularly applicable Vis such. as is ordinarily used for tacking tags on boxes, or paper or vcardboard Yliners vin packing cases and which is usually held in one hand by the operator. By means vof a hand lever which is depressed bythe same hand that holds the device, a trip plunger is actuated to drive a doublejpointed" tack or staplefed from aV strip of staples inserted in a magazine, a staple being fed into positionfor driving from the staple strip at the same time, by the one movement of the hand lever'.

It is the. object of the invention to provide an adjustable' device, toA be attached to any of the suitable well-known types of hand lever operated staplingl machines whereby sheathing paper or lining. may be fastened to a wall or to the rafters of a roof, on the outer or the inner side, in comparatively remote positions, or for fastening such material to' the joists in the attic of a house, particularly in the acute angular portions between joists and rafters, or in constricted locationsl between the attic space beams and room walls, or in angular spaces in the attic, or about gabledf windows, or in corners where it is diilicult, ict not quite impossible, to reach Yin the ordinary manner of use of: such machine.

The: present invention has for its particular object to enable anY operator to apply heat insulation material in sheet form to the lower sides of rafters under a roof or to the upper faces of attic, floor or ceiling joists. I have found that for the application of insulation material which comprises insulation in rolls, as for instance balsam: wool, metal foil sheathing paper or such like material, the insulation may be slid into position with a stapling device provided with the attachment, and the staples inserted from a remote position.

These objects are accomplished by means of the device described and claimed hereinafter, preferred embodiments of which are shown 1n the' accompanying drawings in which:-

Fig. 1 is a broken side elevational view, partly in` section, of a suitable stapling machine provided with the device for remote operation, showing the manner in which the adjustable extention bar and system of levers are attached and the operating parts, whereby the result is accompushed'. i

Fig. 2 is a front elevational view of the same.

Fig. 3 is a fragmental, broken side elevational view showing the housing plate, the lever system and' the suction cup gripper whereby the stapling machine is adapted for remote opera- 0 tion and showing'the disposition of the various parts and their connections. Y

Fig. 4 is a fragmental, broken side elevational view showing an additional extension bar added.

Fig. 5 is a view of a modification of the device, 15 in perspective, with suction gripping cup omitted.

While I have shown these specific embodiments of my invention in the drawings, it is understood that the system of levers and extension bars may be adapted for use with any of the suitable stapling machines in current use.

Referring now to the drawings, in which like numerals designate like or similar parts, I I is the housing of a stapling machine, I2 is the lever pivoted at I3, by means of which the stapling l25 mechanisml and feed are operated. The staple strip I4 is fed under the stapling cutter and plunger I6, which detaches one staple from the strip and drives it under the impulse of a spring 20, which is compressed bythe downward movement of the lever I2 and released by means of a trigger mechanism.

The lever plate 30 is provided with a threaded pin 3I,` passing through the opening 32 in the housing II, the wing nut 33 and washer 34 serving to clamp the plate 30 in its position with relation to the housing. At the upper portion of the lever plate is a boss 35 in which is journalled the bell crank lever shaft 36. At one end of this shaft 36, the long lever arm 31 is xed in position and at the other end, the short lever arm 38, carrying the roller 39, journalled on pin 40. The stop 5I! limits the throw of the bell crank lever. The extension bar 5I is xed to the lever 45 plate 30 by screws 52. At the end 53 of the exe tension bar nearer the user, the remote operating hand lever 54 is pivoted by pivot 55, the extension bar being provided with a plurality of holes 51, spaced apart, so that the hand lever 50 54 may be pivoted in the required position. 56 isr the hand grip for lever 54. This operating hand lever 54 is adjustably connected to the bell crank lever at 60, by the clevis 6I with connecting link 62, adjustable chain 63 and hook 64. 55

The chain is connected to the remote operating handle by means of the pin 66 and clevis 65.

The suction cup gripper bracket 4| is fixed in position on the stapling machine housing Il, by means of the screws 42. The plunger 43 is provided with rounded head 48, the plunger stem passing through suitable holes in bracket 4l. A exible rubber suction cup .44 is fixed to the lower end of plunger 43. The suction cup is positioned so that its concave portion is toward the material which is to be fastened in place. The plunger is depressed by pressing upon the head 48. When the edge of the cup contacts the smooth surfaceof the material, the cup is deformed forcing the air out from within it and a partial vacuum is produced in the cup causing the material to adhere to the lip ofthe cup by suction. The spiral spring 45 surrounds plunger 43 and is retained in place by washer 46 and pin 41. The spring is compressed when the plunger is depressed. When the plunger' is released the spring expands. The material which is light in weight is held sufficiently tightly by the suction cup to permit of its being moved with the device into the vremote stapling position. When the material is in position and the staple has been driven to hold the material at the point required, as will be described hereinafter, the suction cup is released from the material by a, light pull on the device which breaks the suction cup vacuum. The material being now held in place by the driven staple, stapling is proceeded with by moving the device from point to point, driving staples Without further use of the suction cup.

The operation of the device is as followsz-The material to be fastened in place is made ready, a strip of staples is inserted into the machine magazine, and the remote stapling attachment xed in position on the stapling machine, the connectionchain being adjusted to suitablelength so as to hold the remote operating lever in the forward position. The operator places the stapling device onthe sheet of material to be stapled in place, so that when the suction cup plunger is depressed, the edge of the cup contacts the surface' of the material near to a` suitable location on the material for a staple to be driven through the material into the part of the building to which the sheet is'to be fastened. The pressure on the cup causesit'to collapse and a partial vacuum is formed thereunder so that the surface of the material in contact with the cup lip adheres to it and the plunger is held in proper position by the compression of thespiral spring 45. AThe material and stapler are together pushed into the remote position by means of the extension bar the suction cup retaining the material in position with suicient force to permit the material to be positioned for stapling. When the materialis in the required position to be stapled in place, .the hand lever 54 is moved toward the operator. The chain attachment to the long lever draws the bell'crank lever end backward, the

other lever arm 38 travels downward, the roller ,33 bearing upon the hand lever .l2 presses itv 4at the same time the next staple is fed into driving position and the stapling machine is ready to drive the next staple. The stapling operation may now be carried on for the remainder of the sheet without the need of using the suction cup until the required staples are driven in the other remote positions. The attachments may then be detached from the stapling machine and the machine used as a hand stapler in the regular usual manner for driving staples in more accessible locations.

'I'he extension bar l0, shown in'lig. 4, is used with the machine when it is required to be operated in still more remote positions, it being only necessary after attaching the extension bar 10 by means of the screws 1|, to extend the length of Vthe connectionch'ain as required. 'I'he modication-shown in Fig. 5, shows the device without the suction cup gripper. This modication may be used where the material to be fixed in place is rigid enough or` of such a nature to be slid into position with the tacker without'need of being gripped. Y

'Heretofora it has been extremely difcult if not impossible to fix sheet insulation material in remote and restricted places particularly the socalled Metallation which comprises metal foil fastened on a cardboard orfpaper base, but with this. improved attachment, tov the hand stapling machine the .Metallation can be very easily and firmly attached in place at a great saving in time and labor. WhileY a preferred embodiment of the invention has been described it is nevertheless' understood that the invention in modified form may be used with other suitable hand stapling machines. i

Having described thexinvention, what I claim as new' and Vwhat IY desire to secure by- Letters Patent is:`-

1. A portable stapling device, comprising a spring actuated stapler unit and a detachable extension device attached thereto, said extension device comprising an extension arm, a manually operable lever pivoted at one end of said arm, means at the other end of said arm for actuating said spring, actuated stapler unit, and means Fil for linking said manually operable lever with claim 1 wherein the extension arm of said detachable extension device and the means for linking said manually operable lever with said arm actuating means are correspondingly adjustable.V

3. A portable stapling devicev comprising a spring actuated stapler unit `and a detachable extension device attached thereto, said extension device comprising an extension arm Yadjustable as to length, means forv detachably attaching said extension device to said stapling unit, a manually operable lever pivoted atl one'end of said arm, a bearing portion at the other end of said arm, a bell crank lever journalled in said bearing, an adjustable detachable 'linkage means whereby one arm of said bell crank lever is operatively connected with said manually operable lever, a roller mounted upon a `stud carried by" the other arm of said bell crank lever, said roller operatively contacting the actuating means of said stapling unit whereby when the said manually operable klever is oscillated, the stapling unit is actuated.

4. A portable stapling device comprising a spring actuated stapler unit and adetachable extension ,devicev attached thereto, said extension device comprising an extension arm adjustable as to length, means for detachably attaching said extension device to said stapling unit, a manually operable lever pivoted at one end of said arm, a bearing bracket at the other end of said arm, a bell crank lever journalled in said bearing bracket, an adjustable length linkage means attached at one of its ends to one arm of said bell crank lever and at its other end to said manually operable lever, the other arm of said bell crank lever provided With a pin upon which is journalled a roller, said roller slidingly contacting the operating lever of said stapling head,

whereby when the manually operable lever of said extension device is oscillated the roller is depressed, depressing said operating lever of said stapling unit thereby actuating the stapling unit.

5. The portable stapling device as claimed in claim 4, said stapling device being provided with manually operated suction cup means whereby sheet-like material is maintained in suitable stapling relation to the stapling head While said material is moved together with the stapling de- 10

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