US1869971A - Apparatus for attaching paper fasteners - Google Patents

Description

2, 1 F. J. KLINE. 1,869,971

APPARATUS FOR ATTACHING PAPER FASTENERS Filed July 26, 1929 2 Sheets-Sheet l lNVENTOR Fred J ie ATTORNEYS F. J. KLINE 1,869,971

APPARATUS FOR ATTACHING PAPER FASTENERS Aug. 2, 1932,

Filed July 26, 1929 2 Sheets-Sheet 2 INVENTOR 80 f K fie BY ATTORNEYS Patented Aug. 2, 1932-.

umrsnsrrns PATENT FRED J. KLINEOF BAYVILLE, NEW YORK, ASSIGNOE T0. A000 PRODUCTS, INC.,

none IsLAnn oInY, new Yon-n A CORPORATION OF NEW YORK.

APPARATUS FOR ATTAGHTNG PAPER- FASTENERS Application fi led July 26,

This invention relates to paper fasteners and more particularly to an apparatus for securing such fasteners to sheets, binders, and the like which are used in preparing files of correspondence and similar papers.

Paper fasteners comprising a base with two projecting prongs are used widely for securing papers in binders and other filing devices. Such fasteners are made of relatively soft steel, so that the prongs maybe easily bent. Heretofore it has been neces sary to punch the hinder or other support so as to permit the introduction of the prongs of the fastener. This is a relatively tedious operation, particularly in the preparation of binders, which are made frequently of pressboard or other relatively stiff material.

It is the object'of the present invention to provide a simple and effective apparatus which facilitates the securing of fasteners to binders or other sheets in a'single operation in which the prongs of the fastener are forced through the material to which it is secured.

Other objects and advantages of the invention will be apparent as itis better understood by reference to the following specifi cation and accompanying drawings, in which Fig. 1 is a side elevation of the apparatus;

Fig. 2 is a plan viewthereofy a Fig. 3 is a side elevation illustrating the parts in a different position;

Fig. 4 is a front elevation of the apparas tus Figs. 5 and 6 are enlarged sectional views illustrating the operation of the apparatus;

Fig. 7 is an enlarged sectional view illustrating the application of the fastener to the sheet;

Fig. 8 is an enlarged section on the line 88 of Fig. 5; and

Fig. 9 is a view inperspective of a fastener adapted for use with theapparatus.

Referring to the drawings, 5 indicatesa base,'preferably of metal and constructed to afford sutficient stability. The base carries three longitudinal rods 6 supporting a transverse plate 7 which is slidably mounted on the rods. A Ushaped bracket 8 is secured 1929. Serial No. 381,358.

to the plate 7 and is provided with depending legs 9 engaging the central rod 6. A set screw 10 in the bracket 8 likewise engages the central rod 6 so that the plate 7 may be held in any adjusted position. An arm 11 extends through an opening in a bracket '12 on the plate 7, and a set screw 13 in the bracket engages the arm 11 to hold it in adjusted position. The end 14: of the arm 11 is upwardly directed to afford a side gauge for the sheet through which the fastener is to be forced. The rear edge of thev sheet rests against the plate 7. The plate 7 and the arm 11 may be adjusted in the manner indicated to fix the position of the sheet, and thus to determine the place at which the fastener is secured thereto. An additional gauge 15 extends through an opening in the base 5 and is held in adjustable position by a set screw 16 sup ported in a leg 17 on the base. The upwardly turned end 18 of the gauge 15 may be disposed in alignment with the upwardly turned end 14 of the arm 11, thus facilitating the positioning ofthe sheet.

Two upwardly turned legs 19 on the base 15 support a transversely extending rod 20 forming a bearing for a swinging arm 21. The latter is normally held in raised position by a coil spring 22, one end 23. of which engages the base while the other end 24 engages a transverse member 25 of the arm 21. A handle 26 is provided at the forward end of the arm 21. Re'arwardly of the handle 26 is a hammer 27, preferably a plate secured to and extending transversely of the arm. which is adapted to drive the fastener 28.

' As indicated in Fig.9, thefastener 28 may comprise a base with two prongs 29. It may be provided also with two short lugs struck upfrom the body thereof. The prongs 29 are intended to secure the papers which are subsequently attached to the sheet through which the fastener is forced. The lugs 30 act as rivets to secure the fastener firmly in place.

The lugs are preferably employed, but may K be omitted as the fastener will normally remain in position after the prongs 29 have been forced through the sheet.

Since the fastener is made of relativelysoft metal, it is necessary to support the prongs 29 when they are driven through the sheet. For this purpose I provide, as indicated more particularly in Figs. 5, 6 and 8, a swinging support 31 mounted on a rod 32 which extends transversely of the arm 21. The swinging support is provided with two sets of forward ly directed lips 33 spaced a distance equivalent to the spacing between the prongs 29. Each set of lips is spaced sufiiciently to permit the prongs 29 to pass therebetween. One each pair of lips 33 is struck inwardly at 3a to afford a back stop for the prongs 29. The latter may be adjusted between the lips as indicated in Fig. 5, with the base of the fastener beneath the hammer 27. The ends of the prongs are then disposed over slots 35 in the base and upon downward movement of the hammer the prongs will be forced through the sheet 36 on the base and into the slots. Owing to the support afforded by the lips 33, the prongs can be forced through relatively thick and tough material such as the press-board which is employed commonly in the manufacture of folders for filing.

The lips 33 are retracted automatically as the hammer 27 descends. For this purpose I provide a tail 37 which first engages the sheet 36 on the bed of the apparatus after the ends of the prongs 29 have penetrated the sheet and entered the slots 35. The tail 37 is rounded and is so formed as to cause the support 31 to swing backwardly. The lower edges 38 of the lips 33 are likewise rounded, and in turn engage the sheet 36,

' thus continuing the rearward movement of the support 31 as the hammer advances. Consequently the prongs 29 are released as soon as they have passed through the sheet 36 into the slots 35 and no longer require the stiffening effect of the lips 33. As the hammer continues to descend, the lugs 30, if such lugs are provided, pass through the sheet 36. These lugs engage sloping projections 39 on the base of the apparatus which cause the lugs to be turned as indicated in Fig. 7, thus securing the fastener firmly to the sheet. 'The hammer is then permitted to rise. The sheet may be withdrawn wi 11 the fastener secured thereto and another sheet may be substituted.

In placing a fastener in the support 31 it is desirable that the latter remain relatively rigid. I have, therefore, provided a latch 40 pivoted at ll on the arm 21 and having a slot 42 which is adapted to engage a pin 43 projecting from the support 31. A toe M on the latch is adapted to engage the sheet 36 on the bed as the ends of the prongs 29 penetrate the sheet. The latch is thus lifted and the support 31 is released so that the rearward movement thereof as previously described may be accomplished at the proper interval. When the arm 21 swings upwardly again the pin 43 drops into the notch 42 of the support and is again held rigidly to permit the introduction of another fastener.

In place of the latch I may employ a coil spring 45 surrounding a rod 32 and having an end 46 engaging the hammer 27 while the other end 47 engages the support 31. spring holds the support resiliently while the fastener is being inserted. It is to be understood that either the latch a0 or the spring may be utilized for the purpose, or both the spring and latch may The spring is not necessary, however, to bring the support into the proper position, as it will swing by gravity when the arm 21 is lifted so as to engage the pin 43 with the notch in the latch 40.

The apparatus as described affords a simple and very effective mechanism for the rapid application of fasteners to sheets and folders employed for filing. As indicated, the fasteners may be permanently secured to the sheets by employing the lugs which penetrate the sheets and are bent so as to secure the fasteners thereto. In the operation of the device, the prongs 29 are firmly held during the initial period, and while they are piercing the sheet. Bending of the prongs is thereby prevented. Thereafter the prongs are guided by the slots in the base, so that destruction of the fasteners is avoided.

Various changes may be made in the details of construction and arrangement of the apparatus as described, without departing from the invention or sacrificing any of the advantages thereof.

I claim:

1. In an apparatus of the character described, the combination of a base and a support'for a paper fastener movable toward the base and having means thereon to engage opposite sides of the prongs of the fastener to hold them in parallel spaced relation, the latter means being pivoted to the support and adapted to be swung away from the prongs as the support moves toward the base.

2. In an apparatus of the character described, the combination of a base and a pivoted support for a paper fastener movable toward the base and having means thereon to hold the prongs of a paper fastener in parallel spaced relation, ing pivoted to the support and adapted to be swung away from the prongs as the sup-- port moves toward the base.

3. In an apparatus of the character described, the combination of a base, an arm pivoted on the base, and a support for a paper fastener mounted on the arm and movable toward the base and having means The be provided;

the latter means be- 1 ill) thereon. to hold the prongs of a paper fas- V tener in parallel spaced relation. the latter means being pivoted to the support and adapted to be swung away from the prongs as the support moves toward the base.

4. In an apparatus of the character described, the combination of a base, a support for a paper fastener movable toward the base and having means thereon to engage opposite sides of the prongs of the fastener to hold them in parallel spaced relation, the latter means being pivoted to the support and adapted to be swung away from the prongs as the support moves toward the base, and means to hold the support in position to receive the fastener.

5. In'an apparatus of the character described, the combination of a base, asupport for a paper fastener movable toward the base and having means thereon to hold the prongs ofthe paper fastener in parallel spaced relation, the latter means being adapted to be Withdrawn as the support moves toward the base, and means to hold the support in position to receive the fastener including a latch and a pin adapted to engage the latch.

6. In an apparatus of the character de scribed, the combination of a base, an arm pivoted on the base, a support for a paper fastener mounted on the arm and movable toward the base and having means to hold the prongs of a paper fastener in parallel spaced relation, the latter means being pivoted to the support and adapted to be swung away from the prongs as the support moves towards the base and means to hold the support in position to receive the fastener. 7. In an apparatus of the character described, the combination of a base, an arm pivoted on the base, a support for a paper fastener mounted on the arm and movable toward the base and having means to hold the prongs of a paper fastener in parallel spaced relation, the latter means being adapted to be withdrawn as the support moves towards the base and means to hold the support in position to receive the fastener, including a latch on the arm and a pin on the support adapted to engage the latch.

8. In an apparatus of the character described, the combination of a base and a support for a paper fastener movable toward the base and having pivoted means thereon to hold the prongs of a paper fastener in parallel spaced relation, and means associated with said pivoted means adapted to engage the base and swing said pivoted means to withdraw the same from the prongs of the fastener.

9. In an apparatus of the character described, the combination of a base and a support for a paper fastener movable toward the base and having pivoted means including two pairs of spaced lips to hold the prongs of a paper fastener in parallel spaced rela tion, and means associated with said pivoted means adapted to engage the base and swing said pivoted means to withdraw the spaced lips from the prongs of the fastener.

10. In an apparatus of the character described, the combination of a base and a support for a paper fastener movable toward the base and having means thereon to hold the prongs of a paper fastener in parallel spaced relation, means associated with said pivoted means adapted to engage the base and swing said pivoted means to withdraw the same from the prongs of the fastener, and means to hold the support in position to receive the fastener.

11. In an apparatus of the character described, the combination of a base and. a support for a paperfastener movable toward the base and having means thereon to hold the prongs of a paper fastener in parallel spaced. relation, means adapted to engage the base whereby the support is withdrawn, and means to hold the support in position to receive the fastener, including a latch and a pin adapted to engage the latch.

In testimony whereof I affix my signature.

FRED J. KLINE.

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