US2240455A - Staple setting machine - Google Patents

Description

April 29, 1941. A. E. cARLlLE STAPLE SETTING MACHINE Filed Jan. 5, 1939 M 2 Sheets-Sheet 1 A TTORNEYS.

April 29, 1941; A, E cARLlL-E STAPLE sETTING MACHINE File Jan. 5, 1939 2 Sheets-Sheet 2 IN VEN TOR.

AT TORNEYS.I

Patente Apr. 29, 194i.

S'EAE'LE SETTING MACE Alfi-edit.. `iarliille, Meville, lPa., assignor to Talon, Inc., acorporation ot Pennsylvania Application January 5, 1939, Serial No. 249,456

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This invention relates to staple setting ma chines and particularly to a machine for apply- =ing staple bottom stops .on slide fasteners after the slide fastener has been attached to a garment' in applying slide fastener assemblies to certain garments, for example, trousers, it has been learned in practice that itv is most feasible to construct the garment in complete halves with the respective slide fastener stringers attached to the opposed parts, and then to join the halves together. In this construction it is necessary to Join the bottom ends of the strngers after the haives of the garment have been put together. In other words a permanent bottom stop must be applied to the stringers at the ends of the rows oi' interlocking elements. Former types of machines devised for this purpose have been relatively complicated and expensive Ato manuiacture for sale to garment manufacturers where the slide fasteners are assembled in the process of the garment manuacture. v

It is therefore an object of my invention to provide an improved staple setting machine which is relatively cheap to manufacture and which may beeasily used by garment manufacturers desiring to assemble the slide fastener on the garment when it is manufactured.

It is a further object of my invention to provide a staple setting machine which is simple in construction and has as rewworking parts as possible and at the same time, dependable over a long period of operation.

More specifically my invention provides a setting machine which receives a strip of preformed staples joined together by a portion between the staples notched to an angle of about 30 to 40 with a plunger acting against the end staple to break lt off from the strip, transfer the same and load it into a staple setting punch.

In the accompanying drawings I have shown for purposes of illustration one embodiment which my invention may assume in practice. In the drawings:

Fig. 1 is a side elevation of the machine partly in section and showing the working partsxtherej of;

Fig. 2 is a 'perspective view of a strip of staples *intended for use with my machine;

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part oi the machine and shows the automatic release for quick return oi the transfer finger p from the setting punch;

Figo is a vertical section taken through the setting punch and shows a staple set in position on the respective edges of slide fastener stringers;

Fig. 7 is an enlarged side view of a staple and shows the angle of the notch formed in the strip between the staples;

Fig. 8 is an enlarged diagrammatic view illustrating the manner in which the. transfer plunger acts against the bottom staple onthe strip and breaks it off at theV point of the notch shown in Fig. 7.

The machine di-sclosed comprises generally a base ti, a standard lil, Which supports the main 'frame ii of the machine, and a foot pedal 92 acting through the rod ili on a bell crank lever ili. A conventional spring ih attached to the foot lever is employed to return the setting mechlto anism to its initial position.

Attached to the frame li of' the machine is a channeled housing lt which retains a toggle lever i'l mounted on a pin lt attached to the side of the housing.` This toggle lever ili operates through a pin i@ to impart motion to a transerfinger Zli. A spring ili engages the toggle lever ll and the side of the housing i@ for returning the transfer finger 2@ to its initial, or i retracted, position. A link 22 is pivoted to the bell crank lever ili and has on .its forward end a notch 23 which engages a projection 2@ 'on the toggle lever l'l. A spring 25 acting between the bell crank lever li and the link 22 holds thelinl: 22 against the toggle lever projection Zli.

Formed in the' forward side oi the housing iti is a guide channel 25 through which the strip oi Staples 271 is fed by gravity. This channel tii is aligned with the transfer finger 2@ and the strip advances when the transfer finger is retracted by spring zl so that a part of the end staple tt projects over the end oi the transfer flnger tii. When the transfer finger 2@ moves forward it operates to break the end staple or element off the strip 21 during one cycle oi operation of the machine. The end of the transfer finger 2@ has an inclined surface ti which comes in contact with the end staple i@ of the' strip 2?! and dlsengages it or breaks it od in a manner shown in Figs. 3 and 8. The strip-Zli is formed with a deep notch tt between the adjoining Staples. It isimportant that these notches define an angle of about 30 or 40 degrees in order that when the transfer flnger 211? strikes against the end staple '28, the sides of the notch 42 will strike against each other and the material will stretch sufflciently to break at the notch.V

If the notches were of the usual form with its sides meeting at about 60 the material Which is usually a copper nickel alloy will not break on bending the staple 90l from thestrip. After the element 28 is broken oil' the transfer finger 2@ advances the element to the position in the setting punch shown in dash lines in Fig; 3.

In this position the broken ofl end element 28V is urged back in the reoessed portion 4@ of the transfer flnger 2G and the sides of the element movement of the setting punch and across the 28 come in contact With side springs 29 and Sfi,

respectively. These side springs grip the broken off element 28 and hold it in properly. 'aligned setting position as the transfer finger retracts to its initial position. As shown in Fig. 5 after the broken off element'28 has been transferred to the setting punch 33, an adjustable screw 31 positioned on the toggle lever il bears against the link 22 on thebeli crank lever M and 'pushes the notch 23 of the link 22 out of enga'gement with the projection M on the toggle lever ll. In this position the toggle lever il is released, and the spring iliv acting against the toggle lever ll quickly returns the transfer finger 2@ to its initial position and allows the strip of staples to advance in position to repeat the operation. After the toggle lever il is released and the link 22 attached to the bell crank lever id is retracted, the end 32 of the bell crank lever strikes the setting plunger 33 and pushes it down'carrying the broken off end staple 28 between the side springs 29 and 3@ to a position where the end staple 28 strikes the setting anvil M and sets this staple through the fas'tener stringers. The side springs 29 and 3B are attached to the side of the block 35 which rides in a bore 36 formed in the setting plunger 33 and While the' setting head 31 of the setting plunger S clinches the staple 28 the spring 38 yields to allow the side springs 23 and 3B to retract into the bore 36. A central positioning pin 39 for positioning the goo'ds to be stapled relative to the setting mechanism may be employed as illus-I trated in Figs. 1 and 6. This positioning or locating pin in the anvil is normally spring pressed upwardly by an adjustable compression spring et and will be pressed downwardly by the punch during a setting operation.

While I have shown and described in this application' one embodiment which my invention may assume in practice it rwill be understood fastener strip guideway and having means for bending and breaking an element from the end of a strip in the guideway turning said element through substantially Aand presenting it to the setting punch, and common means for positively moving said transfer finger from retracted position and subsequently operating said setting punch.

2. In a fastener setting machine of the class described, a guideway for a fastener strip,`a transfer punch adapted to disconnect` a staple from the strip and move it out of alignment with the guideway, means for. actuating saidtransfer punch'for the above purpose, means for auto-` matically disengaging the transfer punch from .said actuating means when it reaches its' limit of travel and a spring for quickly returning the transfer punch to its initial position. V

3. A stapling machine comprising a guidewa for a pronged staple strip, an anvil, setting mechanism including a setting punch movable in a path substantially parallel to the said guideway toward said anvil, and a normally retracted transfer finger movable across the end of the guideway transversely to the path of movement of thepsetting punch, the end of said transfer finger in its retracted position being substantiaily intransverse alignment with the end of the guideway, and said transfer flnger having an inclined staple engaging surface engaging the end staple of the strip for bending and breaking said staple from the strip then turning it at an angle to its position in the guideway and directing its prongs downwardly toward said anvil0 the transfer punch being movable to carry said staple to the setting punch.

4. A machine comprising the combination of elements defined in claim 3 and automatically retractable spring fingers carried by the setting punch for engaging and holding the staple after the transfer flnger has retracted.

AIFRED E. CARLILE.

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