US95721A - Improvement in machines for making sheet-metal fans - Google Patents

Description

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eEoEGE s. rEoK, 0E movvnN'nn,v PENNSYLVANIA, AssreNoR '.ro HIMsELE AND WIL- LIAM H. MORGAN-on SAME PLACE.`

Letters .Patent No. 95,721, dated October 12, 1869.v

IMPROVEMENT IN MACHINES FOR MAKING SHEET-METAL PANS.

The Schedule referred to in these Letters Patent and making part of the name.

To all whom it may concern..-

Be it known that I, GEORGE S. PECK, of Towanda, in the county of of Bradford, and State 4of. Pennsylvania, have invented a new and useful Machine for Making Sheet-Metal Pans; and I do `hereby declare that the following is a full, clear, and exact description of thesauie, reference being had to the accompanyingdrawings, and to the letters-ot' reference marked thereon.

This invention relates to a new and useful machine for making, out of a single piece of sheet-metal plate, sheet-metal pans, those of rectangular shape, and is more especially designed for manufacturing what are termed and known as pie-pans, which are of tinned sheet iron, quite shallow, of rectangular form, and have hevelled or inclined sides.

The. object of the invention is to obtain a machine for the purpose specified, which will perform the desired work rapidly, and in a perfect manner, with unskilled labor, dispense with all soldering, as well as jointing-machines, which are at present almost universally used in sheet-metal work, and effect these results without any increase in the consumption of stock, rather econoinizing in that respect than otherwise.

In the accompanying sheet of drawings- Figure l is a plan or top view of my invention.

Figure 2, a rear sectional elevation of the same, taken in the line x x, iig. l.

Figure 3, a horizontal section of the same, taken in the line y y, iig. 2.

Figure 4,-a detached perspective View of a cam per taining to the same.

Figure 5, a plan or top view of a piece of sheetmetal cut in the proper form or shape, ready to be operated upon in the machine.

-Figure 6, a diminished perspective view of a piepan as made by my machine.

Similar letters of reference indicate corresponding parts in the several figures.

To enable those skilled inthe art to fully understand, construct, and use my invention, I will proceed to\'d`escribe it.

The machine may be constructed wholly of cast-iron.

A is the base of the samefof rectangular shape, and supported by feet, a, oneat each angle or corner. On the upper surface of `this base there are two fixed --or permanent cleats, B B, which are parallel with each other, and have their inner sides inclined or bevelled, as shown in fig. 2, at b b. These vcleats may be cast with the base, or made separately, and afterward permanently secured to it by screwsv or otherwise.

C O represent two cleats similar to B B, but they are not fixed or permanently attached to the upper surface of the base A, like B B, being so arranged or applied that they may be adjusted by set-screws, c c.

The cleats C Care located on the base A, at rightv anglesto B B, and the four of them, B B C C, coni stitute a rectangular female die, in which the pan is lswaged, by aI male die. The inner surfaces of thel cleats C C are bevelled like B B, as shown at d d, in tig. 2, and the ends of all the cleats are bevelled so 'as to form mitre-joints, as shown at e in iig. 3.

These joints c, however, are not close ones, thebev-vl els at the ends of the cleats being at suchv an angle that when the cleats at the outer ends of A the joints are in contact, there willbe a space of gradually inn creasing width from the outer to the inner ends' of the joints, as shown clearly in tig. 3. The spaces maybe made of greateror less width, to suit the thickness of I the metal plate to be swaged, by adjusting the cleats C C further inward or outward from the ends of the cleats B B.

The base A, within the space enclosed or formed by the cleats B B C O, forms the bottom -of the female die, and it is of skeleton-form, as shown in fig. 3 at f.

Underneath this open or skeleton-portion of the ,base there is across-arm plate or spider, D, having an upright pin, g, at the end of each arm, and these pins work in or thronghholes h, at or near the corners of the bottom of the die.

The plate or spider D is designed to discharge the iinished pad from the female die, said plate or spider being operated and pins gforced upward through the holes h bynieans of a treadle, E; (See fig. 2.)

F is the male die, which corresponds in shape Aand sizeto the female die, the former, when fully down, fitting within the latter. This male die works within or between upright guides i i attached to the base A, and it is connected by a strap, G, with a pulley,

H, which is placed loosely on a' driving-shaft, I, the4 latter having its bearings, j, on a cross-plate or frame, J, which is secured to the upper ends of the uprights K of the guides i t of the male die F.

On one end of the driving-shaft I there is keyed a ratchet, L, into which a pawl, M, catches. This pawl and ratchet prevent the casual dropping of the male die F in the event of the breaking or giving way of the driving-belt, or from any other cause.

N isa sleeve placed on the driving-shaft I, so that i 0n the sleeve N there is also acam, P, shown more clearly in iig. 4.- This cam maybe described as being composed of two parts, l l', which parts are about of equal length, the length of the entire cam being rather more than one-third the circumference o f the portion of the sleeve N on which it is placed or secured.

rthe front part, l, of the cam, is a portion of a spiral or helical thread, or it may be described as a poriiame J and the notch and cam, in connection with the spring O, perform an important function, to wit, under a continuous rotation of the driving-shaft I, they cause thc male die to rise to the necessary height,

.and liberate it at the proper time, so that it may descend, the cam, in consequence of working in the notch or recess, moving the sleeve on the driving-shaft and disengaging the two sets-of teeth k k from each other at the proper time to liberate the pulley H and allow the male die to descend, the spring O, at the time desired, causing the teeth k k' to engage with each other so that the male die may ascend.

, Q is a hand-lever, fitted on the cross-frame J, and engaged at one end with the sleeve N, for the purpose of enabling the operator or attendant to disengage the sleeve N from the pulley H at will, and allow the male die to descend.

To the peripheryof .the pulley H there is attached a cross-bar, which projects a trifle beyond each side of the pulley, as shown at o o, fig. 2, to form stops.

These stops are at such points on the pulley that they will, when the pulley is liberated from the sleeve N, and the male ,die F consequently allowed to fall, come in contact with buers p p at the under side of the cross-frame J, it being, of course, understood that the pulley H rotates backward on the driving-shaft I when the male die descends. l

The stops o o, in consequence of coming in contact with the buersp p, which may be of India rubber, leather, or other suitable material, prevent all unnecessary jars or concussions, aswell as the binding or wedging of the male within the female die.

The sheet-metal to be operated upon is cut or stamped out into plates of the form shown in fig. 5, and motion being given the driving-shaft I, the plates or blanks, designated by 1', arev placed, one at a time,

on the female die, and each time the male die descends, it forces a plate or blank into the female die, and swages said plate or blank into the desired form. Each time thermale die ascends, the pan is takenfrom the female die, the pau being forced upward out from the female die by depressing the trcadle E, and a new blank, r, placed on the female die before `the male die descends.

It will be seen from the above description that each pan is made entire out' of one piece of metal plate, and. thatthe angles or corners of the pan are formed by the surplus metal at the angles or corners being forced into the spaces at the joints e, under the force of the descending male die F. This.4 forcing of the surplus metal into said spaces causes the angles or corners of the pan to be sharply and neatly formed, the projecting surplus metal being closely compressed, so that the portion at each corner or angle of the pan, after the latter has been removed from the female die, may be readily bent over against the adjoining side or'end of the pan.

`I would remark that the pans may be provided with a wire rim at their top edges in the usual way.

I do not claim, broadly, an automatic rising and falling die, irrespective of the mechanism for -operating it; but having thus described my invention,

What I do claim as new, and desire to secure by Let-ters Patent, is-

1. In combination with a male and female die for swaging sheet-metal plates into paus, each pan being made entire ont of one piece, the pulleyH and sleeve n, providedrespectively with the teeth It k to form a clutch, the cam P ou the sleeve N, the-notch or recess n in the cross-frame J, and the spring O, all being constructed and arranged to .operate in the manner substantially as and for the purpose specified.

2. Having two opposite sides or cleats C O of the female die applied in such a manner-that they may be adjusted to vary the width of the spaces at the angles or Vcorners of the female die, when said adjustable cleats are used in combination witha male'de, F,

arranged to operate (rise and fall) automatically, sub- Witnesses:

Ask DoUGLAss, H. E. SHIPMAN.

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