US674852A - Die and forming-machine. - Google Patents

Description

No. 674,852. Patented May 28, 1901. c. E. 00E.

DIE AND FORMING MACHINE. (Application filed July 33, 1900.) (No Model.)

2 Sheets-8heet l.

WITNESSES INVL'NTOR,"

@W/ww @WM. (Z a/55.5.25: Cae/ No. 674,852. Patented May 28, I901. c. E. cos.

DIE AND FORMING MACHINE.

(Application filed July 23, 1900.) (No Model.) 2 Sheets-Sheet 2.

WITNESSES;

INVE T019 Gkarla; .60 6/ A TTOHN E )5 llri irun Srari-js W hm '1 t i AT EN i. i lFli CE a CHARLES E. (JOE, OF ST. LQUIS, MlSSQURI, ASSlGNQR TO DAVID T. GRAHAM, Oi SAME PLACE."

UlE AND FQRMlNG-WlACi-HNE.

SPECIFICATION forming part of Letters Patent No. 674,852. dated May Q8, 1901. Application filed July 23,1900. Serial No. 24,526. on model.)

To alll whom it may concern: I

Be it known-that 1, CHARLES EJGOE, a citizen of the United States, residing at St, Louis,

, State of Missouri, have inventedcerta'in new and useful Improvemeutsin Dies and Form ing-Machines; and i do hereby declare the ferred form or embodiment whereof will be set forth in the following specification and illustrated in the accompanying drawings.

One object of my invention, among others, is to provide reliably eflicient means for forming from a strip of sheet metal a securing device, which I will for convenience designate a harness-meander and belt-fastener, and while my improved diewill be illustrated and described as especially adapted for forming said securing'device it will be understood that with slight modifications the machine may be made ready to form various similar devices.

A further object of my invention is to pro vide an attachment designed to cooperate with the die proper, whereby certain points of my improved securing device may be prop: erly bent or shaped to render the article complete as it leaves themachine, except the mere act of dividing the fastening device thus formed upon the strip of metal into separate or individual fasteners.

Another object of my invention 1s to provide an automatic feed for my improved cuttin gmachine or die whereby the strip of sheet metal will be-drawn into engagement with. the cutting and forminginstrumeuts, when the strip thus prepared will'be ready to be oper-'.

ated upon by the cuttin -machine, whichwill sever the strip at proper intervals, audthereby produce the finished belt-hook or harnessniender,-the act of separating the strips being a separa-teand distinct operation.

In the accompanylngdrawiugs, Figurel is a side elevation of in yimproved die andforming-machiue complete.- Fig. 2 is a top plan view of Fig. 1. Fig. 3 shows an. elevation of male portion of the die.

the cutter and former illustrated in l i g. 1 and taken from the left side of said view. Fig.

4 is. a detail View of a portion of the strip of sheet metal, both for-med and uuformcd, and an end view of. the block comprising the fe- Fig. 5 is a top plan view of the parts illustrated in Fig. 4. Fig. 6 is-a bottom view of the cutting-head and the teeth carried thereby and also shows the teeth'and controlling-cam employed to operate the feed. Fig. 7 illustrates the side View of the block shown in Fig. 5, showing aportion of the tooth-forming block in section. Fig.8 illustrates another form of head designed to carry the outting-teeth. Fig. 9 illustrates a special form of die or cutting-block.v designed to cooperate with the teeth shown in Fig. 8. Fig. 10 is a top plan View of the female portion of the die, showing the strip of metal partly fashioned into my securing device.

I am aware that it is common to form via.- rious kinds of articles and dcvicesi'rom sheet metal, as by striking the same out therefrom, and my invention, as will be hereinafter clearly set'forth, accomplishes the resultofforming a'series of teeth upon both edges of a strip of sheet metalin anoriginal manner, inasmuch as the result is accomplished by successive steps, though by a' single operation. Au essential'feature, therefore, of my invention is comprised in the method of thus combining or attaining two separate and distinct results in a single operation or movement of the cutting-die.

section, which may be provided at each end with suitable apertures 2, by means of which.

said plate may be firmly secured in its operative positionbysuitable bolts, as is coni-v mon. Properly secured to the base-plata'as by-the bolts 3, is the female portion or bodysection 4, which is provided with elongated apertures 5, said apertures being tapered or reduced in width at their inner ends in order that the points or teeth to be formed upon the metal strip may be properly shaped, as will, be hereinafter pointed out.

Designed to be secured to the plates 3 to the upper surface of the body-section 1 is the stripper-plate 6, also provided withaperturcs' corresponding to and registering with the apertures 5, as clearly shown in Fig. 2. The stripper-plate (l is held above the body portion '1" throughout its middle wrtion by means of the in tel-posed plates 7 and 8, or said stripper-plate may, if preferred, be formed so that each end thereof will he of greater thickness than the middle portion of said strip, thus insuring that the middle portion of the plate will be held above the body at. The width or extent of the recess 9 thus provided between the plates 7 and 8 is designed to be substantially coincident with the width of the strip of sheet metal 10, upon which it is designed to operate. In order that said strip may be held to its Work and properly drawn under the cutting-teeth, the plate 7 is extended outward sufficiently to form the guiding-section 11, the inner edge of which maybe properly i graduated for the purpose hereinafter set forth.

Designed to cooperate with the die-block at is the forming-anvil, comprisingthe elongated body-section 12, having the enlargedr inner end or head 13 located adjacent to the body 4 and secured in any preferred way, as by the bolt 14:, extending through the baseplate into engagement therewith, as shown in Fig. '7. The anvil and body 4: mayfiif desired, be formed integrally or in one piece. The height ofthe anvil-section is coextensive with the height of the body 4:, as it is desired that the strip of sheet metal 10 shall pass from the body 4 directly onto the anvil in. order that the points may be properly bent or shaped by the means hereinafter described. In Fig. 3 I have illustrated a side view of the movable portion of the diefcomprising the shank 15, as is common, which may be readily connected with the press or other source of power, while upon said shank I provide the head 16, to the lower side of which I secure or integrally form the cutting- teeth 17 and 18, preferably arranged in pairs, said teeth being the proper size to be snugly received by the aperture 5, formed in the body portion 4:. By thus-arranging the cuttingteeth in pairs the strip of sheetmetal is operated upon both edges simultaneously, the result being shown in Fig. 10. The outer pair of teeth 18 merelyblank out the strip at intervals, thereby forming the sectionsl9, from which two complete points orteeth are formed by each of the inner teeth 17, as indicated by the dotted lines 20-that is to say, when the strip of sheet metal 10 is first inserted it will be first operated upon by the outer pair of teeth 18, the result being that the section 19, as shown he formed. The feeding mechsection 19 to be moved directly over the inner pair of apertures 5, and thus dispose it in the path of or under the inner pair ofteeth.

17, the result being that a long and a short point will be formed by the downward movement of the inner teeth, each tooth 17 forming two separate and distinct points at each downward -movement. It is obvious, there- .fore, that the operation of the outerpair of teeth 18 will be in-advance of the inner pair of teeth 17 and that the result will be the for,

mation of a section 19, ready for the action thereon of the teeth 17. fore, is the practical combination of two operations, both of which are carried out by a single reciprocation of the head 16. It will be understood that, if desired, the inner pair =of teeth may be'made slightly longer or shorter, the object being to insure that but two of the teeth will strike the sheet metal at once, thus requiring less force or power to operate the same than would otherwise be the case if all the teeth-were of the same length.

By the arrangement of thecutting- teeth 17 and 18 just referred to it will be seen that two points are formedupon-each edge of the strip of sheet metal and also one section 19 on each edge 21 at each reciprocation of the head 16, and in order to utilize the movement of said head to form or shape the teeth with respect to the centrdl" portion or body of the strip of metal I secure to the inner side of said head the tooth-forming device illustrated in Figs. 3 and 6 and comprising an inner. plate 21, provided with a recess 22, the width or extent of which det brmines the point or place of bending the longer teeth, as indicated by the numeral 23 in Figs. 5 and 10'.

Cooperating with the inner plate 21 is the outer plate 24, also provided with a vrecess 25 in its lower end, which, however, is of less width than the recess 22, inasmuch as said recess'is designed to operate upon the shorter points 26, provided upon the edge of the sheet metal, the plate 21 being upon the longer points 27, as above set forth.

If preferred, the plates 21 and 24 may be formed integrally from a single piece of suitable material. so fed into the machine that the finished teeth or points will pass from the body portion 4:, so as to leave the longer pair of teeth or points 27 directly under the recess 22 and immediately over the head 13 of the anvil, while the next outer shorter tooth will be disposed immediately under therecess 25, formed in the plate 24, and above the anvil-body proper or the narrow portion thereof and the result. will be that when the head is forced downward'the tooth-forming plates 21 and 24 will so operate upon the points directly under them that each short tooth will'be bent sharply downward at'right angles to the central por-- tion 28 and against the sides of the body 12 of the anvil, while each longer tooth immediately above the head 13 will be bent at a point thereof having substantially the same The result, theredesigned to operate The strip of sheet metal 10 is width as the base or inner portion of the of all the teeth will be substantially of the same size. The purpose, therefore, of the head l3 and the reduced portion 12 of the anvil is to insure that each alternate long and short tooth upon each side of the strip will be bent or shaped substantially in the manner shown in Figs. i, 5, and 10.

By the peculiar construction of the anvil 12 the finished strip of metal 10 will be allowed to freely pass outward until the entire strip has been operated upon by the machine and all of the requisite teeth or points 26 and 27 have been cut and shaped as desired, it only being necessary to take the said strip after it has passed through the machine and cut it into proper lengths, the best results being attained by providing that each securing device shall have at least three distinct teeth or points upon each edge thereof.

in Fig. 8 have shown another form of head, as indicated by the numeral 29, and in order to attach the teeth thereto in a convenient and reliable manner I form in opposite sides thereof recesses corresponding in shape to the teeth 3t), which are formed upon or constitute an integral art of the body-section 31, the teeth being s cured in position by extending'a suitable bolt 32 entirely through the head and anchoring the same in position by the nut 33.

By forming the teeth as shown in Fig. 8 it will be readily understood that they may be very quickly and cheaplyformed by milling or otherwise cutting the same from one side of the body portion 31. This willbe a much cheaper form of construction than to form. the teeth asshoWn-in Fig. 6 and then providiug apertures in which they maybe anchored into cooperation with the head.

In Fig. 9 l have illustrated a shearing block or anvil 34, corresponding in-function to the body portion 4. (Illustrated in Fig. 4.) Instead of providing the apertures, as indicated by the numeral 5, which can only be accomplished at a great expenditure of time and labor, I cut in each side of the block 34 the recesses 35, which aredesigned to receive the teeth 30, and since said recesses 35 may be comparatively cheaply provided this form of cutting anvil or block may prove mostdesir able in practice, though I reserve the right to employ either form. u

To insure that the plate 10 will be regularly moved at proper intervals, so as to cause the outer teeth 18 to strike the plate at the proper point thereon to provide the sections 19- and also to'cause the inner teeth to so act upon the sections 19 already formed that a short and a long tooth will be fashioned-therefrom, i provide the feedi ng mechanism illustrated in Figs. 1 and 2 and comprising the gripper or dog 36, provided upon its inner edge with a ratchet-face or aseries of outwardly-inclined teeth 37, said teeth being designed to engage or clutch two or more of the longer shoulders or bended portions 23, and it is therefore ebvio'us that when the gripper or dog 36 is .moved outward, the plate will be drawn with it, and to insure that the plate will be so acted upon at the proper instant I provide the camcontroller or wedge 38.

cam-controller. 38 shall be' of proper extent to enable it to act upon the dog'36 and move it sufficiently outward to cause the plate 10 to so move that it will be inthe correct position to enable the teeth to properlyperforfn their office. With this end in view it is important that both the length and thickness of the camcontroller 38 shall be carefully determined, inasmuch as the thicknessthereof will deterthe dog, while the length will insure that said dog shall have'been moved the requisite dis tance to oausethe plate 10 to be moved to the correct position before the teeth enter the apertures 5.

The dog 36 is held normally inw ard by the controlling-spring 39, properly secured in position against said dog, as bv extending the same around the stem 40, the latter being properly held in position by-the ear or bracket 41, carried by thefbase-plate. The dog or carried thereby is left free to ride over the teeth formed upon the plate 10, which result is accomplished by a spring 42, properly secured toithe boltor post 43, anchored in the plate 1. Any suitable form of housing or guide may be provided to hold the dog against upward movement, though I have shown in the drawings the simple finger or plate 44, designed for this purpose, a similar finger 45 being also PIOYldGd dfld extended in a plane suffioiently above the anvil 12 to freely permit the plate l0 and the teeth formed thereon to pass under it, thoughpreventing said "plate from having an undue upward 'movement.

As is well understood,"the oliice performedby'the stripper-plated is to insure that the plate lOwill not adhere to the teeth 17 and 18, but willbe stripped therefrom, thereby preventing an I upward movement of said plate.

By the peculiar manner of cutting the teeth or points upon the edge of the plate 10 a shearing action results, and the teeth will edges, thereby producing a securing device which will readily take into the leather or other material to which it is applied, said beveling of the teeth furthermoreinsuring -that they will be normally directed inward toward each other, thereby enabling the clenching process to be easily completed. This construction of the teeth .or points 26 and 27.

from the use of my invention. In initially feeding the plate to the machine, whichmust be manually performed, it becomes necessary for the operator to make a mark upon the edge of thestrip of, material and cause said mark to register with one of the lines or mine the extent of the outward movement of gripper is so mounted that the ratchet-face therefore be sharply beveled upon their outer.

It will be understood that the length of the is therefore a very important result arising I graduations 45, provided upon the inneredge of the guiding-plate 11, in order that the teeth 17 and 18 will act upon the plate at the'exact point desired. This manual operation, however, is discontinued after the plate has passed through the machine sufficiently to be acted upon by the dog 36, when the remainder of the feeding process is entirely automatic.

While I have described the preferred form or embodiment which may be adopted in materializing my invention, it will be understood that I desire to comprehend in this appli,ca-

bination with the die proper hafvingapertures, of teeth adapted to fit, said apertures; a stripper-plate carried by the die proper and suitable clutch mechanism adapted to engage the strip after it has passed under the teeth,

and a wedge connected to the head carrying the teethdesigned to operate said clutch' mechanism, all substantially as specified and for the purpose set forth.

2. In a die and forming-machine, the combination with the die proper having suitable apertures, of ahead provided with teeth, the latter being adapted to cooperate with said apertures in the die, and atooth-forming'anvil comprising a body portion 12 and a head 13, whereby the teeth formed upon the plate passing under the teeth will be alternately long and short, substantially as specified and for thepurpose set forth.

, ,3. In dies, the combination with the body portion having suitable apertures, of a head provided with teeth adapted to cooperate with said apertures; a stripper-plate located above said body and provided upon its under side with a reduced portion whereby an opening will be afforded for the strip of material acted upon and means to draw said strip "of' materialthrough the machine whereby the outer pair of teeth will prepare sections of the strip designed to be acted upon by the inner pair of teeth substantially as specified and for the purpose set forth.

4. The herein-described die and formingmachine comprising a body portion and teeth cooperating therewith; a stripper-plate secured to said body portion and provided with a recess below the same to receive the strip of material; a tooth-forming anvil comprising a body portion 12 and a head 13 located in the path of the moving strip and means carried by the head to force one of. the teeth upon each edge of the strip of material do wn- ,ward against the side of said body and said head whereby the shorter pair of teeth will be bent at their point of union with the body portion while the longer teeth will be bent at a point thereof having the same width as the base of the shorter teeth thereby forming a convenient harness-m ender orbelt-hook, substantially as specified and for the purpose set forth.

5. In a die and forming-machine, a feedingclutch having means to engage the teeth formed upon the strip of material after ithas passed under the teeth whereby said strip will be drawn through the cutting mechanism, in combination with a head carrying teeth and a Wedge secured to said head and adapted to operate said clutch, all substantially asspecifled and for the purpose set forth.

6. The herein-described combined die. and forming-machine comprising a body portion; a head having teeth adapted to cooperate with said body portion; a stripper-plate cooperating with said teeth; a tooth-forming anvil and means carried by the head to cooperate there with whereby the teeth will be shaped in the manner specified, and additional means to antomatically draw the strip of materialacted upon by said die in such a manner that two complete teeth will be formedupon each side of the strip-at each downward movement of said teeth all substantially as specified and for the purpose set forth.

7. In dies, the combination with a pairof blanking-teeth of a pair of point-forming teeth, said teeth being so combined into co+ operative-relationship that a blank will be formed upon each edge of the strip of material simultaneously with the'formation of .two points formed from the previous blank, all substantially as specified and for the'purpose set forth. i

S. The herein-described. combined toothcutting and tooth-shaping machine comprising a die proper adapted to produce upon each edge of a strip of material a series of alternately long and short teeth; means to regularly draw the strip of material through the cutting mechanism and additional means for bending the short teeth upon each edge of, and at right angles to the strip and so bending the longer teeth upon each edge that the rightangled extension thereof .will be coincident in size with the shorter teeth substantially as set forth.

9. In a combined die and forming-machine, a feeding device having a ratchet-face adapted to engage the strip of material as it passes through the cutting-dies; suitable means to hold said device normally inward against the body of the die and additional means designed to force said feeding device outward during each downward movement of the cuttingteeth, substantially as specified and for the purpose set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES E. GOE.

Witnesses:

WM. Womnmue, G. J. B." SKINNER.

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