US228554A - Said mos - Google Patents

Description

TINTTED STATES PATENT Gretna.

GEORGE H. PERKINS AND WVILLIAM MONAUGHT, OF'PHILADELPHIA, PENNSYLVANIA; SAID MGNAUGHT ASSIGNOR TO SAID PERKINS.

METAL-WORKING PRESS.

SPECIFICATION forming part of Letters Patent No. 228,554, dated June 8, 1880.

Application filed March 13, 1880. (ModeL) To all whom it may concern:

Be it known that we, GEORGE E. PERKINS and YVILLIAM MONAUGHT, both of Philadelphia, Pennsylvania, have invented an Improvement in Metal-Working Presses, of which the following is a specification.

Our invention, which consists, as hereinafter set forth, in certain minor devices for feeding in and holding orretaining the blank in position, is applicable to any of the old embossing, striking-up, or forming presses in which sheet metal is formed or embossed, and it is described in this specification and represented in the drawings in its application to a forming-press which has been for many years well known to metal-workers in sheet-metal cans, and its object is the construction and combination of such appliances upon the press as will enable the accurate feeding of the blank and will control its placing in the exact position required for the best action of the striking-die; to which end our invention consists in the devices hereinafter set forth and claimed.

Of the drawings, Figure 1 is a front elevation of a press embodying our invention and adapted to form the seam portion of the tops and bottoms of petroleum and other rectangular cans, Fig. 2, a top-plan view of the beddie, doubly-stopped feeding-arm, and side guards; Fig. 3, a side elevation of the press of Fig. 1; Fig. 4, a transverse sectional detail of the old form of side guard or gage; Figs. 5 and 6, similar views of the guards employed in our invention, illustrating the action of the striking-die in forming the embossed blank of Fig. 7 into the form of the same represented in Fig. 6, the latter blank being a bottom of a petroleum-can,showing the doubled-up portion of the seam which is to receive the side body and be clamped upon the same. Fig. 7 is a perspective detail of one of the hold-downs acting upon the blank, shown also in Fig. 5.

A in the drawings represents the strikingdie of such a press as is used to form the turned-up edge of the seam of the bottoms and tops of rectangular cans. B is the beddie corresponding to the same, and O the front extension or table thereof, upon which the blank a is laid in place to be fed by means of the feeding-arm to the bed-die.

a is a casing-bearing secured to the upper frame-work, l), of the press. h h are slides connected with the plunger i of the strikingdie, and serving to guide the latter in its re- 1 ciprocation within the casin g. Through the casing the striking die is' reciprocated by means of a connecting rod, operated by a crank-axle, d, journuled at e c in the frame. f is a driving fly-wheel connected with the crank-axle. gis a clutch device of well-known form, and adapted to be suitably operated to throw the fly-wheel into or out of connection with the crank-axle.

The rotation of the crank-axle operates the plunger and striking-die. The clutch, as is usual, enables the stopping and starting of the action at will.

D is the feeding-arm, of the usual construction, suitably pivoted to an extension or other portion of the press.

Heretofore the throw of the feeding-arm has been regulated at the end of itsforward stroke by a stop-pin, a, encountering the bed-die or other stop, which has in such manner stopped it, with the attendant result that the pin a, which secures the extremity of the arm to the blank-carrier H, has at times been bent or broken off, to obviate which we have devised the double-acting stop E, located at the pivot of the arm, the action of which is to stop the arm-at both ends of its throw-an action rendered possible by the construction of its double face 0 a. By consultingFig.2 of the drawings, which shows both positions of the arm, the action of this stop will be most clearly understood.

Heretofore, also, the side guards of the beddie have been constructed in the form shown in Fig. 4, or in. substantially analogous forms, with the result that great difficulty has been experienced in feeding the blank into its proper position by reason, for instance, of its being warped, or of its catching against the edge of the overhanging guards S, to obviate which objections and the overhanging construction of guard we have devised the hold-downs, hereinafter described, and the guards F, (well shown in Figs. 5 and 6,) which latter consist of longitudinal stops arranged parallel with the sides and back of the bed-die and not overhanging the same. Beneath these stops we arrange the ledges G of the bed-(lie, upon which the edge of the blank rests before the striking of the die, as shown in Fig. 5, and against which the edges of said blank are bent upward in the striking of the die, as shown in Fig. 6.

c c are inclinedplane stops, over which the blank slides it is fed, but which serve to prevent its backward return after it is fed into proper position. I are what we term holddowns, affixed to some stationary part of the upper frame-work of the press and passing downward through slots J in the strikingdie. They are made adjustable vertically, and can be so set as to accommodate their position to a blank of any given depth or thickness. The lowerfront faces ofthe hold-downs are rounded at i, as shown in Fig. 7, so as to obviate any possibility of the blanks catching against them as it is fed beneath them. Inconnection with the side guards, these hold-downs form a very perfect means of determining the placing of the blank upon the bed-die. The guards are also made adjustable in the manner usual with such devices.

It will now be understood that the conjoint action of the stopinlimiting the forward throw of the carrier to that point at which it has placed the blank in the proper position, and

of the side guards and hold-downs in aiding the placing of the blank, renders our press more perfect in its blank feeding and placing mechanisms than those commonly in use.

Having thus described our invention, we

claim and desire to secure by Letters Patent of the United States- 1. In combination with the feeding-arm, a (.louble-acting stop placed at the pivot thereof, as and for the purpose specified;

2. In combination with the beddie, holddowns, as and for the purpose set forth.

In combination with the bed-die and holddowns, the side guards, as and for the purpose specified.

4. In combination with apunching or forining press, hold-downs, side guards, and a stopcontrolled feedingarln, as and for thepurpose specified.

The inclined-plane stops 0 c, as and for the purpose specified.

In testimony whereof we have hereunto signed our names this 17th day of February, A. D. 1880.

GEORGE H. PERKINS. WILLIAM MONAUGHT. In presence of- J. BONSALL TAYLOR, W. O. SIRAWBRIDGE.

Images