US453589A - Cutting and stamping machine - Google Patents

Description

(No Model.) 4 Sheets$heet 1.

P D. SAPPORD.

CUTTING AND STAMPING MACHINE.

No. 453,589. Patented June 2,1891.

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F. D. SAFFORD. CUTTING AND STAMPING MACHINE.

No. 453,589. Patented June 2,1891.

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(No Model.) 4 Sheets-Sheet 3.

P. D. SAPPORD.

CUTTING AND STAMPING MACHINE.

No 453,589. Patented June 2,1891.

O l I 0 (No Model.) 4-SheetsSheet 4. F. D. SAPIEORD. CUTTING AND STAMPING MACHINE.

No. 453,589. Patented June 2, 1891.

NITED STATES PATENT OFFICE.

FRANK D. SAFFORD, OF CAMDEN, NE\V JERSEY.

CUTTING AND STAMPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 453,589, dated June 2, 1891.

Application filed February 26, 1891. Serial No. 382,975- (No model.)

To all whom it may concern:

Be it known that I, FRANK D. SAFFORD, a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Combined Cutting and Stamping Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a machine for simultaneously cutting and stamping sheetmetal trimmings for sheets of paper adapted for roofing, walls, ceilings, &c.

The object of my device is to provide a rapid, cheap, durable, and easily operated and adjustable machine.

With this purpose in view my invention consists in the peculiar features and combination of parts more fully described hereinafter and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 represents a side elevation of my complete machine; Fig. 2, a front elevation; Fig. 3, a top view; Figs. 4 and 5, vertical sections through x 00 of Fig. 2; Figs. 6, 7, 8, and 9, views of details.

The reference-letter cl represents a reciprocating die, and d a yielding oscillating die. The former is actuated by an elongated eccentric c", which rotates within sliding boxes e, reciprocating within a cross-head e, fixed to a plate e,to which the die cl is adj ustably secured. The means by which this die is made adjustable consists of transverse lock-bolts f, which pass through an. elongated slot f in the die, together with end screws f, passing through threaded bosses f The end screws enable the die to be finely adjusted. toward. and from the oppositedie d.

The die (1' consists of a cylindrical rock bar having a segmental longitudinal recess (1 cut in its front side to form a flat face 61' for the impingement of the die (I, and it is seated within a concave socket 9, formed in the front face of a seat g, which seat is adjustably secured. to the frame Ct by a lockbolt on. The die d is made to yield to the pressure of die d by means of a spring h,having one end attached to a crank-arn1 7t fixed on the end of the die, and the outer end to the frame-work of the machine. The face of the reciprocating die d is made oblique to its path of motion, and the plane of the upper face 61' of the oscillating die (1' radiates from near its axis, while its lower face is provided with a ledge vi, which forms a flange m upon the tin strip m, and the remainder of the surface m" then slopes down to the periphery of the die. The die cl is provided witha series of punching-pins j, which enter corresponding recesses j in the opposite die (I. A plate a is adj ustably secured to the seat 9 by a lock-bolt g", which passes through an oblong slot g'. The plate a and die d each have sharp cutting-edges 7; 7a, which pass each other when the dies are brought together, and thereby give a shear cut to the tin. A chute Zextends at right angles to the movement of the reciprocating die d, and is so located as to feed the sheets of tin bet-ween the dies. The edge of plate a is arranged to extend a slight distance over the face d of the die 61' to prevent the tin or from catching on the pinsj.

To remove the severed strip 01, from the die d in case it should stick, I provide an ejector n, the end of which bears against or is very close to the bottom of the die, so that the strip will be scraped off when the dieis withdrawn, as shown more clearly in Fig. 7. The oscillating die (1' is provided with boxes 0 at its opposite ends, made adjustable by means of lock-bolts o and oblong slot 0", Fig. 1, whereby the die can be adjusted with the plate q, in which it is seated. The mechanism is actuated by a pulley q, fixed on shaft q, mounted in the frame a and having upon its opposite end a fly-wheel q" and pinion q', which meshes with a gear r on the eccentric-shaft Z). The frame a stands at an angle of about forty-five degrees from a vertical line, so that the severed strips of metal will readily fall through the opening below the dies, and the frame can be adjusted on its axis 1) by means of a set-screw p. The shaft q communicates motion to the eccentric through pinion q' and gear 9', and every revolution of the eccentric reciprocates the die (I. A sheet of tin is now placed in the chute, so that its lower edge will rest on the surface m of the oscillating die and give the required width to the strip to be stamped out. Now when the die (Z advances its sharp edge 70 presses closely past the opposite edge 10' and cuts off the strip m, and, continuing to advance against the yielding die 02, the lower ledge t of the latter is brought up against the bottom of the advancing die and stops the movement of both, thereby forming the flange m and making the perforations in the strip. The continued rotation of the eccentric withdraws the die d, and as it retreats from the opposite die (1' the latter follows until arrested by the stop 1", and at this juncture the severed strip is jarred loose and drops down through the gap to a receptacle below. Shoulda strip of tin stick to the reor treating die d, the ejector a quickly removes it. This operation being kept up and sheets of tin fed into the chute the dies Will sever and stamp the strips at a very rapid rate.

It is evident that my invention could be varied in many slight Ways that might suggest themselves to a skilled mechanic. There fore I do not limit myself to the exact construction herein shown and described, but consider myself entitled to all such variations as come Within the spirit and scope of my device.

Having thus described the preferred form of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a stamping and cutting machine, an inclined frame provided with a spring-actuated die, in combination with a rectilinear reciprocating die, substantially as described.

2. In a stamping and cutting machine, a reciprocating die, in combination with a spring-actnated oscillating die, substantially as described.

3. In a stamping and cutting machine, a pair of dies, in combination with an inclined frame having an opening below the dies and an inclined chute above said opening, whereby sheets of metal are fed by gravity to the dies and the severed and stamped pieces fall by gravity from them, in the manner and for the purpose set forth.

4:. The combination of a rectilinear reciprocating die having a cutting-edge, a stationary plate having a cutting-edge adapted toco-operate with that on the die, whereby the material is severed, and a spring-actuated oscillating die provided with a face adapted to receive that of the reciprocating die and located below said stationary plate, and an inclined feed-chute for feeding the material between the dies, in the manner and for the purpose set forth.

5. The combination of a rectilinear reciprocating die movable in an oblique plane, a springactuated oscillating die, cutting-edges, feed-chute, and eccentric, all arranged and adapted to operate in the manner and for the purpose substantially as described.

6. The combination of a rectilinear reciprocating die provided with a cutting-edge adapted to co-operate with a cutting-edge above, a spring-actuated oscillating die having a face arranged to receive that of the reciprocating die, a ledge formed upon the oscillating die and adapted to close against the under side of the reciprocating die, all arranged and adapted to operate in the manner and for the purpose substantially as described.

7. In combination with the herein described reciprocating die, a stationary ejector having its upper end located in close proximity to the lower side of the die, in the man ner and for the purpose substantially as described:

8. In a cutting and stamping machine, a spring-actuated oscillating die having a cylindrical formation, and a rigid plate provided with a socket within which the die moves,

bination with a rectilinear reciprocating die, as and for the purpose substantially as described.

said die having alongi'tudinal recess, in com-

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