US227829A

US227829A - Sylvania

Info

Publication number: US227829A
Authority: US
Publication date: 1880-05-18
Anticipated expiration: 1897-05-18

Description

` (Model.) f

G. H. PERKINS. su, W. MONAUGHT. Blank-Guard for Die-Presses.

No. 227,829- Patented-May 18,1880.-

smuulg *Iiiliulllllly l' i .e

, @ga-www @VM/'UWM' N. PETERS, PHOTULITHOGAPHER, WASNINGT'ON. D C.

' UNITED STATES y PATENT OFFICE.

GEORGE H. PERKINS AND WILLIAM MCNAUGHT, OF PHILADELPHIA, PENN- SYLVANIA; SAID MCNAUGHT ASSIGNOR TO SAID PERKINS.

BLANK-GUARD FOR DIE-PRESSES.

SPECIFICATION forming part of Letters Patent No. 227,829, dated May 18, 1880.

Application led March 19, 1880. (Model.)

To all whom it may concern:

Be it known that we, GEORGE H. PERKINs and WILLIAM MONAUGHT, both of Philadelphia, Pennsylvania, have invented an Improveinentin Blank-Guards for Die-Presses, of which the following is a specification, reference being made tonthe accompanying drawings, forming part hereof, in which- Figure lis a front elevation ofso much of the 1o striking and bed dies of a press as are necessary to illustrate the application ot' our in vention, the striking-die being elevated; Fig. 2, a rear elevation of the saine;` Fig. 3, a side elevation of the same; and Fig. 4, afront elevation similar to that of Fig. l, but showing the position of the parts when the strikingdie has descended and is down.

Our invention relates to presses which are employed in the stamping, embossing, forinzo ing, or otherwise shaping of sheet metal; and its object is the insuring of quick insertion of the blanks, the prevention of such carelessnessin the operator as would cause the blank to run over the tops of the gages, and the re- 2 5 tention of warped plates within the gages.

`In the drawings, A represents the plunger of the striking-die, and B the strikingdie proper.

C is the bed-dic, upon which the blank is 3o fed; andD,theframe-work supportingthe beddie.

E E are blank-guards, in the present instance rocking upon pivots e upon the frame. They are located at both sides of the bed-die,

and are of any fit construction, that represented being a convenient form. They are provided with laterallyextending webs F, which overhang the blank and constitute the guards or retaining devices proper.

4o Connected with both the guards and soine fixed-portion of the frame are spiral or other springs G, which, when the strikingdie is elevated, serve to retain the guards in the position shown in Fig. l-that is to say, in such position that their webs overhang the bed-die and block the path ofthe striking-die.

H H are cam-faced deieotors connected with the striking-die, and-rising and falling with the latter. In their descent they encounter 5o ledges I upon the guards, and thereby deflect away the guards out of' the path of the strikin g-die and into the vposition shown in Fig. 4, expanding in so doing the spiral springs. n

The parts being in the position indicatedin Fig. 1, the operator feeds the blank upon the bed, the Webs of the guards and the stopgages M insuring its reception in proper posi- Y tion. As the striking-die is caused to descend the deiectors H throw aside the guards, so that their Webs clear the path of the striking- 6o die. As the die ascends the guards spring back.

M are adjustable stop-gages, pivoted at m to the back of the bed-die and controlled by a pivot-spring, N, eonnterpoise, or other device in such manner that when the die is elevated they occupy the position represented in Figs. 1 and Z-that is to say, with their stopextreinities above the plane ofthe bed.

O are hooks pivoted to the back ofthe strik- 7o ing-die in line above with the stop-gages. They are held by springs P against stops Q in the position of parts shown in Figs. 1 and 2. As the die descends, the hooks encountering them slip over the extremities of the stopgages and hook beneath the same. As the die ascends the hooks therefore liftand tilt the stop-gages into the position shown in dotted lines in Fig. 2 before they disengage, whereby the formed blank can slide out at the 8o rear opening of the press before the stopgages set themselves for the succeeding blank.

Various modified constructions may be resorted to in the formation, arrangement, and method of operation of the guards and stopgages, that represented being merely one of many possible and convenient forms.

We have represented at J K an adjustable side gage for setting up the blanks against a fixed gage, L. The device, however, may be 9o omitted.

The adjusting gage is the invention of George H. Perkins, and forms the subject of another application for Letters Patent led contemporaneously with this.

The side gage is shown in the present instance merely to indicate a convenient manner of use conjointly with the guards and stopgge- Having thus described our invention, We Ioo claim and desire to secure by Letters Patent constructed and operating substantially as set of the United Statesforth. y

1. In a die-press, the combination, With the In testimony whereof we have hereunto bed-die, of overhanging guards designed to signed our names this 10th day of February, 15

insure proper placing and retention of the A. D. 1880.

blank, and adapted to be operated by means of the striking-die, so as to be thrown clear of its path to permit its action, substantially as GEORGE H. PERKINS. WILLIAM MCNAUGHT.

described. In presence ofy 2. The combination, in a die-press, of the J. BoNsALL TAYLOR, guards, the stop-gages, and the side gage, C. B. TAYLOR.