US512684A - Shade forming and cutting die - Google Patents

Description

(No Model.) 2 Sheets-Sheet I.

E. D. 000KB.

SHADE FORMING AND CUTTING DIE.

No. 512,684. I Patented Jan. 16, 1894.

(No Model.) 2 Sheets-Sheet 2.

E. D. 000KB.

SHADE FORMING AND CUTTING DIE. No. 512,684. Patented Jan.'16, 1894.

nnnnnnnnnnnnn c UNITE TATES PATENT FFICE.

SHADE FORMING -AND CUTTING DIE.

SPECIFICATION forming part of Letters Patent No. 512,684., dated January 16, 1894.

Application filed June 14, 1893. Serial No. 477,615. (No model.)

To all whom it may concern.-

l 3e it known that I, EDWARD DEAN CooKE, a citizen of the United States, residing at Ohicago, Cook county, Illinois, have invented a new and useful Improvement'in Shade Formng and Cutting Dies, of which the following is a specification.

Myinvention relates to forming and cutting d es and has for its object the production of dles for cutting and forming shades for electric lamps.

Referring to the accompanying drawings,- Figure is a machine with the dies attached. Fig. 2 Is the bolster plate upon which the lower die rests. Fig. 3 is the part of thelamp shade to be acted upon by the die. Fig.4c is a plan view of lower die. Fig. 5 is a vertical section through the center of same. Fig. 6 1s a plan View of the upper die. Fig. 7 is a vertical section through center of same. Fig. 8 1s a section on line 8, 8, Fig. 4, when the two dies are in engagement and the shade in po- SltlOn between them. Fig. 9 is a section on 11116 9, 9, Fig. 4, under the same conditions.

Like letters represent like parts throughout.

A plate A upon which the lower die pieceB rests is supported bythe legs A, A. These legs also support the upright pieces or standards A A which are provided at their upper ends with the bearings A A for the crank shaft 0. Said crank shaft is provided with the double crank C, and the pulley 0 A connectmg rod 0 is journaled at one end to the double crank O, and at the other end to the crosshead 0 working between the guides 0 G. This cross-head C carries the upper die D. This die is shaped as shown in Figs. 6 and 7. The die proper, D, is provided with the teeth D, and spaces D and is inserted within the metal piece D which is turned down so as to form the collar D. A threaded looltD passes through the metal piece D and the die D, being screw-threaded into the latter, to hold 1t in place. A set screw D also helps to hold the die D in place. The teeth D are provided with die-rounded edges D The lower die B is shown in detail in Figs. 4. and 5, and is provided with the teeth B and spaces B similar to the upper die D. The

teeth B are rounded at the lower outside parts B said rounded part being opposed to a corresponding rounded surface B in the sliding sleeve B which rests upon the three reciprocating rods 13.

The die Bis held in the metal piece B by the set screws B The metal piece B fits into a circular opening A in the top of the plate .A, and is held in place by the screws B B,

which are screwed into the holes A in the plate A. The part A of the plate A fits into a hole 13 in the metal piece 13 and prevents any lateral motion of said metal piece. The lower ends of the rods, 13, pass through holes A in the plate A, and rest upon the washer A on the rod A". Said rod is rigidly attached to the plate A, and is provided with a coil spring A the upper end of which bears against the washer A and the lower end against the washer A said washer being held in place by the nut A Fig. 3 representsa central portion of alampshade, ready to be acted upon by the forming die. (This shade is the subject of a separate application.)

E represents a flat central portion of the shade upon which the die acts, having the circular portion E stamped out.

E represents the crimped drooping portion of the shade or the shade proper,only a smallportion being shown. E and E represents the portion of the shade to be cut and shaped.

The particular form, construction andarrangement of these several details may be altered or varied without departing from the spirit of my invention, and therefore I do not wish to be limited to the precise arrangement shown.

The use and operation of my invention are as follows:-The lamp shade E after being formed as shown in Fig. 3 is placed between the two diesB and D. (See Figs. 8 and 9.) The crank shaftO is caused to revolve in some suitable manner say, by a belt on the pulley 0 This lowers the cross-head 0 (see Fig. 1) and brings the two dies together. The teeth D of the upper die D are forced between the teeth of the lower die B cutting the metal of the shade along the dotted lines (Fig. 3) and forcingthe portions E downward. The portions E are forced upward by the teeth B of the die B. The collar D of the upper die D strikes the sliding sleeve B forcing it downward against the tension of the spring A3 until said sleeve strikes the metal piece B. In this position the portions E E of the shade are pressed between the rounded edges D of the teeth of the die D, and the rounded surface B of the sliding sleeve B and are given the inwardly curved shape shown in Fig.8. The portions E are left straight as shown in Fig. 9 and spring slightly outward after being released from the die. As the shaft 0 turns farther the die D is raised, until 1t 1s disengaged from the die B. The spring A forces the sliding sleeve B upward to the posltion shown in Fig. 5, when the completed shade is removed,another shade inserted, and the process repeated.

.1 claim 1. In a shadeforming and cutting die, the comblnation of the two portions of the die, provided with interlocking fingers or teeth, with operating mechanism which forces the dies together, and causes the teeth to interlock and move along each other so that the intervening metal is cut, and its out portions bent 1n opposite directions, and a sliding sleeve on the outside of one portion of the die, for the purpose of forming and bending the metal portions bent toward it, and freeing the device from the die.

2. In a stamping and shaping apparatus, the combination of the two dies provided with interlocking teeth or fingers, the teeth or fingers of one die being rounded, as at D mechanism for forcing the dies together, a sliding sleeve surrounding one of the dies and havin g the rounded surface, D opposite to which the rounded surfaces, D of the die come and with which they (so-operate to shape the portions of metal bent by the dies, substantially as set forth.

3. The combination of the two portions of the die provided with the interlocking fingers or teeth, operating mechanism which forces the dies together and causes the teeth to interlock and move along each other so that the intervening metal is bent in opposite directions, a sliding sleeve outside of one of the die portions for the purpose of bending the metal portions bent toward it, and the spring upon which the said sleeve is supported, substantially as set forth.

4. The combination of the upper die provided with the cutting and shaping teeth, the collar into which the upper die is inserted and secured, the lower die provided with the cutting and shaping teeth, the teeth of the said dies being adapted to interlock when the dies are brought together, the sliding sleeve surrounding the lower die and co-operating with the upper die to shape the metal portions bent toward it, and into engagement with which sleeve the said collar comes before the said dies have been completely forced together, and the yielding support for the said sleeve, substantially as set forth.

EDWARD DEAN COOKE.

Witnesses:

WALTER J. GUNTHORP, D. M. CARTER.

Images