US228553A - Circular feed apparatus for presses - Google Patents

Description

(ModeL) G. H. PERKINS. Circular Feed Apparatus forPresses.

No. 228,553. Patented June 8,1880.

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GEORGE H. PERKINS, OF PHILADELPHIA, PENNSYLVANIA.

CIRCULAR FEED APPARATUS FOR PRESSES.

SPECIFICATION forming part of Letters Patent No. 228,553, dated June 8, 1880.

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

Be it known that I, GEORGE H. PERKINS, of Philadelphia, Pennsylvania, have invented an Improvement in Circular Feed Apparatus for Presses, of which the following is a specification.

My invention consists in an improvement, hereinafter described, upon presses provided with a circular feed-plate mechanism of substantially the character hereinafter detailed, whereby the forms of metal are prevented from becoming wedged between the feed-disk and bed-plate or frame-work; and it further consists in a mechanism whereby the feed disk is operated direct by the striking-die.

In the drawings, Figure 1 is a front elevation of my feed apparatus applied to a punching-press adapted to punch circular forms of tin Fig. 2, a top-plan view of the bed-plate of said press with the feed apparatus applied thereon Fig. 3, a side sectional elevation of the feed apparatus applied to an inclined bedplate press; Fig. 4, a bottom-plan view of the feed-disk; Fig. 5, a cross-section through a cell of the feed-disk, exhibit ng the arrangement of its circular feather; Fig. 6, a perspective detail of the circular ratchet-plate, pawl, and crank employed to operate the feeddisk; and Fig. 7, a perspective view of one form of blank formed by the press represented.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents that entire upper portion of a well-known form of punching-press which is located above the bedplate, together with whatever lllGOIlitlllSl'ItlS necessary to insure the reciprocation of a plunger, B, and the striking-die O. D is the bed-plate of the press.

Upon the bed-plate is pivoted, by means of a shaft which extends downward through said bed, a circular feed-disk, E, of the form shown in Figs. 2 and 4, and so constructed as to have formed around its periphery a series of cells, 0, conformed to the article which they are designed to carry and feed to the striking-die. The disk is so pivoted, arranged, and operated that it rotates intermittently and in such manner as to bring each of its cells successively beneath the striking-die, which is best located back of its pivot.

The feed-disk, as stated, is adapted to be rotated in contact with the bed-plate with a regular intermittent rotation, whereby each cell is brought successively beneath the striking-die. A convenient means whereby this intermittent rotation may be effected is the following: The pivot-shaft F of the feeddisk v extends through the bed-plate, and terminates below it in a circular ratchet-plate, G, of any fit diameter. The ratchet-plate is provided with ratchets g, arranged in a circle thereon,

and in a series corresponding in number to the number of cells in the feed-disk. Hung beneath the table is a bell-crank, H, the upper arm of which is connected, by a link, I, to the plunger of the striking-die, while the lower arm carries a pivoted pawl, J, registering in line with the ratchet-s of the ratchetplate.

In the reciprocation of the plunger it is obvious that the bell-crank is oscillated. As the plunger ascends the link, raising the bellcrank, causes the pawl to act against a ratchet, so as to impart to the ratchet-plate a rotation calculated to correspond to the desired throw of one cell of the feed-disk. As the plunger descends the bell-crank is thrown down, so as to cause the pawl to ride back into the next ratchet to the rear of the one in which it has just acted, whereby the regular intermittent movement of the feed-disk, and the consequent feeding of the blanks to the striking-die, is effected.

K is a circular guard, secured to the bedplate at one side of the feed-disk in the inanner shown in Fig. 2, and in such manner as to retain the forms of metal within the cells of.

and groove is to prevent the forms of metal from getting beneath the spurs of the feeddisk and Wedging between the latter and the bed'plate of the die.

Thepresses to which my invention is applied can be arranged at an angle, as shown in Fig. 3, so that the shell I) of the punched-out blanks a will slide out of their cells to the rear of the striking-die, while the blank drops through the bed-plate. Other means of escape, however, can obviously be provided, and the arrangement is applicable to flat-bed presses, in which case a suitable escape-opening is provided beneath the striking-die or any given means of discharge for the shells or formed pieces applied.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1. The combination, to form a device for actuating to an intermittent rotation the circular feed-disk E, of the plunger B, link I, bellcrank H, pawl J, ratchet-plate G, and pivotshaft F, the Whole arranged and operating substantially as hereinbefore set forth and 20 In testimony whereof I have hereunto signed 2 5 my name this 14th day of February, A. D. 1880.

GEORGE H. PERKINS.

In presence of J. BONSALL TAYLOR, G. B. TAYLOR.

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