US934738A - Machine for applying box-fasteners. - Google Patents

Description

P. H. LETTRE.

MACHINE PoR APPLYING BOX PASTENERS.

APPLICATION FILED MAR. 22, 1909. I 934,738, Patented Sept. 21, 1909.

PHILIP H. LETTR, F ATTLEBORO FALLS, MASSACHUSETTS.

MACHINE FOR APPLYING BOX-FASTENERS.

Specification of Letters Patent.

Application filed March 22, 1909.

Patented Sept. 21, 1999.

Serial No. 484,847.

To all whom it may concern:

Be it known that I, PHILIP H. LETTR, a citizen of the United States, residing at Attleboro Falls, in the county of Bristol and State of Massachusetts, have invented a new and useful Means for Applying Box-F asteners, of which the following is a specilication.

This invention relates to machines for securing fasteners of that type disclosed in Patent No. 791,198, granted to me on May 30th, 1905.

The object of the invention is to provide a simple form of machine of this character by means of which the fastener can be properly held while being applied to a cardboard box or the like, simple means being utilized whereby the prong of the fastener is caused to bend in the desired direction during the clamping operation.

A further object is to provide a machine of this class which can be readily attached to a desk or table or other supporting structure and which is provided with a gage of novel form for holding the boxes and the like in proper positions with relation to the clamping members of the device.

Vith these and other objects in view the invention consists in certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings :-Figure 1 is a perspective view of a machine embodying the present improvements. Fig. 2 is a longitudinal section through the plunger and its supporting arm. Fig. 3 is a vertical section through the lower supporting arm of the machine, showing the die therein in elevation. Fig. 4 is a view, partly in elevation and partly in section, of the plunger and die, the same being shown in the positions assumed by them immediately prior to the clamping action. Fig. 5 is a similar view showing the positions of the parts with the fastener clamped therebetween. Fig. 6 is a perspective view of one of the fasteners.

Referring to the figures by characters of reference 1 designates a standard having an ear 2 extending from the bottom portion thereof and constituting a base, this ear being provided with a series of apertures 3 for the reception of screws or other securing devices. A lower arm 4 extends from the lower end of the standard 1 and has its free end upturned as indicated at 5 so as to constitute a seat for a die G. An opening 7 extends vertically through this upwardly extending' portion of the arm` and receives the stem 8 of the die G, said stem being secured in position in any preferred manner, as by means of a set screw 9. The upper face of the die is provided with a transverse groove 10 concaved transversely, and upstanding' from the inner edge of the die are spaced ears 11. An opening l2 extends transversely through the upstanding portion 5 of the lower arm, and this opening is designed to receive a spindle 13 having a disk 14 at one end. Said disk and spindle constitute a gage for the purpose of holding boxes and the like in proper position upon the die, and the spindle is designed to be secured in any position to which it may be adjusted by means of a set screw 15.

Extending from the standard 1 and above the arm 4 is an arm 16 having a head 17- at its free end through which extends a guide opening 18. A cylindrical plunger 19 is mounted to reciprocate within this opening. the upper end of the plunger being forked as indicated at Q0 and pivotally connected to a lever 21. This lever is mounted at one end upon the upper end of the standard 1, while its other end is provided with a handle 22. A spring 23 extends around the plunger 19 and bears at its ends against the head 17 and the forked end 20 of the plunger respectively, thus serving to hold the plunger normally elevated. The upward movement of the plunger 19 is designed to be limited by the inner end of the slot in fork 90 of said plunger moving against the lever 21.

Arranged eccentrically within the lower end of the plunger 19 is a bore 24, in which is slidably mounted a rod 25, there being a coil spring 26 interposed between this rod and the inner end of the bore so as to hold the rod normally projected below the plunger 19. A disk 33 is secured upon the end of the plunger and has a substantially semi-circular opening 34 therein for the reception of a guide finger 35 tapered downwardly toward its free end and having one flat face. The flat face of this finger is disposed in a plane extending through the outer longitudinaliv edgey portion. off thev groove 10 will be clearly apparent by referringto- Figs. 4 and 5 of the drawing. l

The fastener to be used in connection with this machine has been showfn'iinidetail in Fig;V G. This fastener' is of the type disclosedy inl myA patent hereinbefore mentioned` and con sists of a U-shapedimember 27 formed at one end of an imperforate member 28', said imperforate member having a prong 29 at one endtt-hereof and slightly` curvedin the direction of" the U-shaped2 member 27, while a tongue 30 extends fromfthe otherl endlofi the ilnperforate member-'28, and under and beyond the member 27. Any opening' 3lis formed iii-said Ushaped member at such a point` that when the two members 27. and 28 arepressed together the prong 29 will" enter. the opening- 3l and can'beloeped-about.y that portion of the member 27'int'erposed between the openingA 31 and the inneredge ofi' the member 27.

In using the device herein described the edge ofl the card-board boxv or the like to whicli'the fastener' isto'be secured is placed between the members 27-and 28 ofthe clip and said members pressed slightly toward each other sothatthe point of the prong will not contact: with theinserted:card-board, whichl isindicated atE 32'. The fastener is then placed upon the die G andi with the member 27 lowermost while theV tongue 30 extends between thel ears ll and is held againstv lateral displacement' thereby. The Cardi-board then inserted between the members 27 and 28: as indicated in Fig. 4', andE the plunger 19 forced downwardly by means ofthe lever 2li. rBhe lingen 35 will move: against the convex face of the prong 2f) asshown inl Fig. 4 and will finally come into contact with the card-board 32, the pl ung-er: 19 f following-v the linger. and pushing the prong 29 through the card-board' and intothe groove l0.'y Before tlieprong enters the groove it must first pass through the openingf 31 in the member 27' and when-it comesintol contact with the curvedfbottom of'tlie' groove saidbottom willcurl' the prong upwardly aroundIt-he inner edge of the member 27 and press thepoints of the prong into the. card-board. as1shownin Fig. 5; During t-he clamping action of the plunger' 19 the lfinger 35 mov-es backintothe bore 24; and the edge of the card-board will of course :rest within the fold: of the fastener and the tongue 30 will thus project beyond the edge and, ifthevsfastener is attached to the edge lportion of the wall of the card-board box lthis tongue 30 can be pushed through the vcover of the box and by folding it or bending it inwardly' it' will; operate to securely fastenthe cover in place. y

It-l is ofcourse tofbe understood that after abomorltlie like has been properly marked to' iindieatethefposition) where the fastener is to` bef placed' the gage disk. 14a is adjusted there-against and:y secured? by means of set screw 115... rllhis gage can subsequently be used, for;y indicating; the proper;y points at which. additional' boxes etc.,. are tobe placed upon the die.

Obviously various changes may be made in: the' construction and: arrangement, ofl the vparts witlioutf. depaiting` fromVV the spirit or sacrificing the advantages of the invention.

What' is. claimed is:-

ma'chine 'for applying box-fasteners `and the like,y comprising connectedf, upper and lower arms, a' stationaryy clamping! member removably mountedupon. the'lowen arm and having; a detlecting surface5 a springsupportedy clamping memberl movably mounted within:- the upper anni and.` having' an: eccentric longitudinal bore, anf aperturedI disk reL movably connected to V one end' of; saidf member, a spring pressed". element slidably mounted withinitlie bore-'and normally bearing: againstA said disk-,a=v guiding finger extending; from said; element; and through the disk,I and an. actuating; devicev connected to the clamping member for successively movingithe finger.' and? disk into #contact with: the stationary clamping; member.

In testimony that I claim the foregoing as-myf own,L Iy have yhereto aliixed my signature in the presence oftwo witnesses.-` ,Y

PHILIP H..LETTRE.

Wfitnesses:

EREDB; BYRAMS JOHN GHASz. AL Dmnn.

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