US694892A - Die for drawing sheet metal. - Google Patents

Description

Patented Mar. 4, |902.-

J. N. REYNOLDS.

DIE FOR DRAWING SHEET METAL. (Amacai-.ibn med may 25. 1901.1

2 Sheets- Sheet l.

(N'o Model.)

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A A M 0 No. 694,892. y Patented Mar. 4, i902.

J. N. BEYNLDS.

DIE F08 DRAWING SHEET METAL.

(Afiplication filed Kay 26,k 1901.1

(No Model.) 2 Sheets-Sheetl 2.

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's UNITED STATES JUSTUS N. REYNOLDS,

PATENT OFFICE.

on LEMONT, LLINoIs.

DIE FOR DRAWING SHEET METAL.

SPECIFICATION part of LettersPatent No. 694,892, dated March 4, 1902.

Application met May 25, 1901.

To @ZZ whom, t nza/y concern:

Be it known that I, JUsTUs N. REYNOLDS,

a citizen of the United States, residing at-Lemont, in the county of Cook and State of Illinois, have invented new and useiul'lmprove-V ments in Dies for Dra-wing Sheet Metab of which the following is a specification.

This invention relates'to new and useful improvements in dies for drawing sheet metal; and its primary object is to provide a device of this character which is adapted to cut-the blank and draw the same two or more times all at one operation.

With this and other objects in ViewA the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which- Figure 1 is a vertical section through the device prior to its operation. Fig. 2 is a similar View after the shaping of the metal, and

Fig. 3 is a product of the machine.

Referring to the drawings by numerals of reference, 1 is the base of the machine and is provided with a threaded apertureV 2, within which is screwed a disk 3, having a stem 4 extending therefrom. A rod 5 extends downward from the disk 3 and through a rubber. A plate 7 rests upon the upper endr spring 6. of the spring 6 and is slidably mounted on a rod 5, and extending from this plate are pins 8, which project through the disk 3. These pins are secured at their upper ends to a fol! lower or presser-ring 9, which is verticallyv movable within a female cutting-,die 10,..se.

cured to or. formed with castings 11. The presser-ring 9 is provided at its lower edge Jwith an annular ange 12, which is adapted' The rods 16 are,

Serial No. 61,909. (No model.)

Yhold the arms 17 and 22 normally in engagement witheach other.

A stem 25 is adjustably secured in the upper end of each arm 22 and is provided with a head 26, having an inclined upper edge.

A disk 27 is secured to the die 19, and the inclined edge 28 thereof is adapted to contact with the heads 26 and throw the arms 22 outward, as hereinafter described.

, The cutter-die 19 is provided with a central opening 19% in which a rod 29 is mounted therein. The working end of the cutter-die 19 is enlarged, as at 19", to receive the stem 4 and the annular die 14. An annular shoulder 1.9 is formed between the openings 19' and 19b in the working end of the cutterdie, adapted to be engaged by the drawing-die 14. p The operation is as follows: A sheet of metal isplaced upon the cutter-die 10. The maledie'19 is then 'moved downward, thus 'causing the cutting edge tocut out the blank in the Vusual manner, and as the die 19 continues to 'descend the blank is drawn down over fthe annular die 14. The followerY or presser-ring 9 is pressed down during this operationand serves to keep the metal smooth. As soon as the ring 9 reaches the limit of its downward movement the disk 27 contacts with'fthe heads 26 and throws the arms 22 outward, thereby releasing the arms 17 and permitting the die 19 to press the ring 9 further down,I carrying the bolster-plate 15 and the annular die 14 therewith. As the annular die 14 moves downward the metallic disk will be held by the stationary stem 4, and as the die 19 continues on its downward'movement the central bore thereof will shape the blank over the stationary stemA 4, thereby forming the cap or cylindrical body of the product, and the lower edges of the blank will be caught and stamped between the annular shoulder 19c and the annular die 14, thereby forming the annular ange on the article, as shown in Fig. 3. During the stamping operation the blank is guided and kept smooth by the outer periphery of the annular die 14 and inner periphery of the bore of the die 19. The product is removed from the bore of the die 19 by forcing the rod 29 downward. The disk 27 is adjustably secured in position, and the interval between the two drawing operations can be readily regulated either by adjusting said disk or the heads 2G. Vhen the cutter-die 19 returns to its lr'st position after the above operation, the springs 6, 21, and 24 will return all the parts to normal position.

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made without departing from the spirit or sacrificing any of the advantages thereof, and I therefore reserve the right to make all such changes as fairly fall within the scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, :is-

1. The combination with a combined punch and female drawing-die; of a iixed female cutter-die, a stationary stem, an annular drawing-die, a bolster-plate for said annular die, a sliding collar on the punch, arms thereto, rods connecting said arms and plate, pivoted arms normally engaging the arms of the collar, and means for disengaging said arms during the downstroke of the punch.

2. The combination with a combined punch and female drawing-die; of a fixed stem and female cutter-die, an annular drawing-die surrounding said fixed stem, a presser-ring between said drawing-die and female cutterdie, a bolster-plate for said annular die, a sliding collar on the punch, arms thereto, rods connecting said arms and plate, pivoted arms normally engaging the arms of the collar, and means for disengaging said arms during the downstroke of the punch.

3. The combination with a combined punch and female drawing-die; of a fixed stern and female cutter-die, an annular drawing-die, a bolster-plate, a sliding collar on the punch, arms thereto, rods connecting the plate and arms, springs for holding the plate normally lifted, pivoted arms, springs for holding the same normally in engagement with the arms of the ring, adjustable heads thereto, and an adjustable disk to the punch adapted to contact with the heads and throw the arms out of engagement during the downstroke of the punch.

In testimony whereof I affix mysignature in presence of two witnesses.

. JUSTUS N. REYNOLDS.

,Vitnesses:

A. S. DETTERING, Il. J. PRICE.

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