US1229213A - Paper-fastening tool. - Google Patents

Description

W. A. BERNARD.

PAPER FSENING TOOL.

APPLxcATsoN man APn,9,1913.

I Patented June 12, 19W.

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W. A. BERNARD.

PAPER FASTENING ooL.

APPLICATION FILED APR-9| 93. 1,229,921 3, Patented June 12, 1917.

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WILLIAM A. BERNARD, 0F NEW` HAVEN, CONNECTICUT, ASSIGNOR TO THE WILLIAM SCHOLLI-IORN COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CON- Patented J une 12, 1917.

serial No. I760,010.

N ECTICUT.

PAPER-FASTENING TOOL.

1,229,213, Specification of Letters Patent.

Application led April 9, 1913.

To all whom t may concern Be it known that I, WILLIAM A. BERNARD, a citizen of the United States, residing in New Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Paper- Fastening Tools, of which the following is a full, clear, and eXact description.

This invention relates to paper fastening tools and more particularly to tools of the plier or lever handle type, which unite sheets of paper or like material by punching up tongues from the respective sheets and threading such tongues through registering slits cut in the sheets by the tool rat points adjacent the tongues. Implements of this type generally comprise parallel jaws movable toward and away from each other by pivoted handles, one of such jaws carrying a punch or tongue cutter, a slit cutter, and means for inserting the tongue in an opening or eye of the slit cutter, while the other jaw carries a die plate and a stripper plate. Heretofore, implements of this type have been of quite complicated construction, involving the employment of a large number of parts. As a result, such devices have generally been of a size and weight altogether out of proportion to the light work which they perform, and their cost has been considerable, owing to the difficulty and eX- pense entailed in manufacture.

My invention has as its general object the production of a paper fastening tool in which the above mentioned defects are avoided. By my improvements, the tool may be very much more simple, more handy and compact, and considerably smaller and lighter than the prior tools of this type with which I am familiar, and the cost of manufacture may be considerably reduced. These results are obtained, moreover, without sacrificing to any extent the efficiency and durability of the tool; in fact my improvements provide for an 4especially positive, eilicient and reliable operation of the working parts.

More particularly, the invention aims to provide an improved arrangement of the tongue cutting punch with reference to its carrying jaw, whereby considerable super- {iuous weight is eliminated; to furnish simple, positively operated means for inserting the tongues in the eye of the slit cutter, which means will operate indefinitely under ordinary conditions without getting out of order; to provide improved means for mounti ing the die plate and stripper plate and for adjusting the stripper plate lengthwise; and to improve various minor features and details of the construction as a whole.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings,

Figure 1 is a side elevation of a tool emits normal open position,

Fig. 2 is a similar view showing the jaws closed,

Fig. 3 is a front end view of Fig. 1, Fig. 4 is a section on line L -4L of Fig. 1, Fig. 5 is a section on line 5-5 of Fig. 1,

Fig. 6 is a section on line 6-6 of Fig. 3, 1

equipped with a die plate 24 and a stripper plate 25. The upper jaw 20 is provided with a tongue cutter or punch 26 and a slit cutter or needle 27, adapted to pass through openings in the stripper plate 25 and die plate 24. The jaw 20 also carries within the punch or tongue cutter 26 a pivoted member 23 adapted to insert the tongues cut from the sheets, into the eye of the slit cutter or needle 27'; and this tongue inserter 28 is operated by a coperating projection 29 eX- tending upward from the stripper plate. The stripper plate and die plate are both mounted on the jaw 21 by means of a single screw 30.

Turning now to the detailed construction of the parts above enumerated, it will be noted that the handles 22 and 23 are provided at their forward ends with the usual forked portions 22a and 23a respectively.

` bodying my invention, showing the same in f The forked portion 22a straddles the portion f The of the handle 22 is ixedly pivoted to thejaw 21 by a pin 32, and the portion 23a of the handle 23 is similarly pivoted to the jaw by means of a pin 33. The parallel motion of the jaws is maintainedby means of guide pins 34 and 35 carried by the handles 22 and 23 respectively, atthe rear of the .main pivot, which guide pins operate in cutaway portions or notches 20a, 21a at the rear ends of the respective jaws, and are adapted to cooperate with stop shoulders 2Gb and 21b respectively. A coil spring 86 connecting the rear extremity of the jaw 20 with a pin 37 or the like within the handle 22 normally holds the jaws in their open position, as shown in Figs. 1 and 6.

i However, the particular means for mount- CTL ing the jaws in parallel fashion and the particular means for normally holding them open, form no part of the present invention.

The jaw 21 is of U-shaped cross-section, open at the top, and the plates 24 and 25 are seated on the open upper portion thereof. The die plate 24 (Fig. 8) is provided with a generally triangular opening 38 and the forward extremity 38a thereof is adapted to snugly receive the lower end Vof the punch 26 while the larger rear end portion 38h of said opening 38 receives the slit cutter or needle 27. Back of the opening 38 the shank of the plate 24 is provided with a somewhat elongated opening 39 through which the screw 30 passes. The main body portion of the die plate lies on the upperV edge of the jaw 21 but at the rear 0f the plate the same is provided witha depending lug 40 extending Vdown into the channel of the jaw so as to prevent lateral displacement of the plate relatively to the jaw. The screw 30 passes loosely through an opening in the.bottom portion of the jaw 21, and it i extends with somerclearance through the elongated opening 39 of the die plate and into a threaded opening 41 of the stripper plate 25. The threads of the screw 30 engage the threads Yof the opening41 and the stripper plate may therefore be tightly clamped with its shank 42 on top of the shank`43 of the die plate, which shank 43 is in turn'tightly clamped to the supporting jaw. Vhen the screw 30V is loosened, the elongated opening 39 of the die plate permitsv the longitudinal adjustment of the latter relatively to the jaw 21 and to the punch 26 soasto bring the die portion 382L of the dieplate into exact alinement with the punch 26,. After this adjustment has beeneifected,

the same may be vmaintained by again tight-`V enng thescrew Y30,'as willf be obvious. The lateral displacementV of the stripper plate relatively to the jaw is prevented by means of a lug44` similar to the 'lug 40 and extendingalongside said lug 40 into thechannel 6'5', portion Vo'f Vthe jaw. 21.

tion, the Yst irewr is the' only member sepa- By this vcons trucrate from the jaw and the plates 24 and 25,

which is necessary to clamp said plates in position aon the jaw, and yet this construction permits the ready adjustment of the die plate with reference to the punch. No lengthwise adjustment of the stripper plate Vis necessaryowing to the fact that the opening 45 thereof through which the punch 26 passes'should clear the punch to quite an appreciable extent, being somewhat larger than the die opening '38,, while the opening 46 inthe stripper plate for the slity cutter 27 also clears said slit cutter to a considerableA extent lengthwise of the-tool, as shown in Figs. 4 and 6. The projection 29 for operating the tongue inserter 28 is struck up from The punch 26 is formed integral with the jaw 20. As previously stated, the jaw 20 is of channeled cross-section, and this permits the punch to be formed by bending down one end of the jaw on a rather gradual curve, after which the downwardly bent end is suitably worked and shaped to give it the desired cross-section. AsY shown in Fig.V 3, the body portion of the punch 26 is narrower than the curved portion of the jaw l 2O with whiclrit is made integral.

However, it willV be noted that the front closed end of the punch merges into andY forms a continuation of the upper closed portion of the j aw'. Considerable diiiiculty has-been encountered in forming the punch integrally with the j awl in this manner, but I have found vthat a construction substantially similar to that shown in rthe drawings isy commercially practicable, and Vof course, 4the integral connection of punch and jaw eliminates aV number of parts and takes oif ,weight as compared to the old two piece construction. y Y

The slit cutter or needle 27 is provided with a V-shap'ed cutting edgeV 27a and anY i eye 27b (Fig. 5). This slity cutter is made in the form of a flat plate having a shank 27c snugly'iitted Abet'ween'the walls of the jaw 20. [A small pin or projection 27d Vformed integral with the shank extends through an openingA in the wall of th'e fand is clenched against such wall, after which the upset or vclenched 'head of `the Vpin or projectionV isfini'shed ofl"V flushV with the Outer jawsurface. f In the form shown, the body, of the slit cutter is of a width correspondi ing to the width of Vtheupper jaw and theA -edges of the body are set ink notches48 at the bottom edges of the jaw, as shown in Fig. 1.V The pivotedv tongue inserter 2.8

Vcoperating with-the ,slit` cutter 27 is pivoted on a pin 1-9 connecting the side walls of the jaw 20 adjacent to the junction of said jaw with the punch 26. This member 28 has a depending arm 50 at one side of the pivot adapted to ccperate with the eye 27b of the needle or slit cutter, and at the other side of the pivot 19 the member 28 is provided with an arm 51 adapted to cooperate with the projection 29 of the stripper plate. rlhe member 2S is normally so suspended from its pivot that the arm 51 will lie in the path of the projection 29, whereas the arm 50 will be held out of the path of the projection 29 either by gravity (when the jaws are horizontal, or are tipped downwardly relatively to the handles) or by contact of the tip of the arm 50 with the front face of said projection (when the jaws are tipped up relatively to the handles). By preference the tongue inserter 28 will work on its pivot with a certain amount of friction so that its position will not be affected by the tilting of the implement, but in any ease the jaws will be so spaced Vfrom each other that the lower extremity of the arm 50 cannot pass over the upper end of the projection 29.

rIhe operation of the improved tool in connecting together two or more sheets of paper or like material will be apparent from the diagrams of Figs. 9 to 13 inclusive. The sheets having been inserted in the space 47 between the die plate and the stripper plate, the handles are manipulated to approach the jaws toward each other. The punch 26 will pass freely through the opening L15 of the stripper plate into coperation with the angular edges of the die opening 38a, whereby registering tongues will be punched out from the respective sheets in a downward direction, as shown in Fig. 9. At the same time the slit cutter 27 will cut a transverse slit through the sheets at a point comparatively close to the tongues, the eye of the slit cutter being moved down beneath the lowermost sheet. rIhis position of the parts is shown in Fig. 9. As the aws continue to approach each other, the tip of the projec` tion 29 will strike the arm 51 of the tongue inserter whereby the arm 50 of said tongue inserter will be moved toward the right with reference to Figs. G and 9. In this movement, the lowermost extremity of the arm 50 engages the tongues, as shown in Fig. 10, and as the jaws are further approached toward each other and as the projection 29 continues to rock the member 28 on its pivot, the extremity of the arm 50 will push the tongues through the eye of the slit cutter, as shown in Fig. 11. It is then merely necessary to release the handles, which permits the jaws to move away from each other, thereby permitting the member 28 to swing back by gravity to its initial position and causing the tongues to be carried upward through the registering slits by the slit cutter, as shown in Fig. 12. The slit cutter then disengages the free extremities of the tongues, as shown in Fig. 13, and the operation is complete. In this manner the tongues are carired sufficientlyfar into the slits to fasten the sheets together very firmly and securely. The stripper plate 25 acts in an obvious manner to clear the sheets from the punch and slit cutter as said punch and cutter ascend from the lower jaw.

IVhile the foregoing description is necessarily a detailed one in so far as it concerns the particular embodiment of my invention selected for illustration and description, I wish to have it understood that various modiiications of the construction may be adopted within the scope of the appended claims.

What I claim is:

1. In a tool such as described, the combination of a channeled jaw having an open upperpart, a die plate resting on the upper edge of said jaw and having a shank with an opening therein, a stripper plate having a shank offset from the body portion thereof and resting on the shank of said die plate whereby the bodies of said die plate and stripper plate respectively are spaced apart, and a screw passing through the lower wall of the jaw and through the aforesaid opening in said die plate into threaded engagement with the shank of said stripper plate, said opening of the die plate shank being larger than the diameter of said screw to permit lengthwise adjustment of said die plate; substantially as described.

2. The combination with a jaw of substantially U-shaped cross-section, of a cutter comprising a plate having a shank fitted between the side walls of the jaw, and a pin or projection on said shank extending through and clenched in an opening in the intermediate wall of the jaw; substantially as described.

3. rIhe combination with a jaw of substantially U-shaped cross-section, the opposite edges of said jaw being provided with notchesj of a plate having a body portion set in said notches, a shank on said plate fitted between the side walls of the jaw, and a pin connecting` the shank with the intermediate jaw wall; substantially as described.

In witness whereof, I have hereunto set my hand on the Sth day of April, 1913.

VVILIJIAM A. BERNARD.

lWitnesses HENRY E. ROCKWELL, M. OLIVE WILLIAMS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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