US17590A - Improvement in wiring tin pans - Google Patents

Description

` tion of a pan or vessel.

UNITED STATES PATENT OFFICE.

E. A. SMEAD, OF TIOGA, PENNSYLVANIA.

IMPROVEMENT lN WIRING TIN PANS.

Specification forming part of LcttcrsIatcnt No. 17.590, datd JMU@ 15, 1857- To @ZZ whom it may concern:

Be it known that I, E. A. SMEAD, of Tioga, in the county of Tioga and State of Pennsylvania, have invented anew and usei'ul Device for Wiring the Rims or Edges of Rectangular Sheetdlzletal Pans or Vessels; and I do hereby declare that the following is a full, clear, and exact description of t-he same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is avertical section of nly improvement, x Fig. 3, showing the plane of section. Figs. 2 and 8 are elevations of the same, taken at opposite sides of the machine. Fig. 4 is a detached transverse section of the formers. Fig. 5 is a detached planor top view of the lower former. Fig. 6 is aview oi' a por- Fig. 7 is a detached transverse section of the wiring device enlarged. Fig. 8 is a detached view of the wire bent in proper form corresponding to that of thc pan or vessel.

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

My invention consists in the employment or use of a segmentbar and vibrating bar used in connection with a stationary bed and operated by a sliding bar, the whole being arranged as will be hereinafter fully shown and described,whereby the edges ofthe pan or ves sel are closed around the wire in an expeditious and perfect manner.

In order that my invention may be fully understood, I will iirst describe, briefly, the manner in which the pans or vessels are constructed,as the parts employed in the construction are intimately connected practically, though not legitimately, with my improvement.

A represents a rectangular base, on which the vertical guides B B are secured. Between these guides 'a frame, C, is fitted and works. This frame is of rectangular form, and has a cam, D, fitted or placed within it. The said cam D is formed of a circular block, or itmay be described as a wheel placed eccentrically on a shaft,E, which passes horizontally through the guides B B and through oblong slots made in the frame C.

To the lower end of the frame C a die or former, F, is attached. This die or former may be described as being of the precise shape ofthe pan or vessel to be formed. The die or former F may be cast in a single piece. By

referringto Figs. 1, 3, and 4 its form will be distinctly understood. a is the botto1n,which is a rectangular plane corresponding in size to the bottom of the pan to be formed. b are the sides,which are inclined, their upper ends, c, projecting outward, andhaving their under surfaces at right angles with the inclined portions b. It is not necessary thatrthe die or former be solid.

strength.

G represents the female die orformer. This die is formed of a plate, d, the upper surface of which corresponds in size to the plate or bottom a of the upper die or former.

To each side or edge of the plate d a side piece or strip, c, is attached by joints f f. The

inner surfaces of these side pieces are planes;

but their outer sides are rounded or curved, as shown more particularly in Figs. 1 and 4. The plate d is attached to the upper end of a guide-block, g, which works through the base A, and has springs h h bearing against it, said springs being attached to the underside of the base.

To the upper surface of the base A there are attached guides t'. The inner lor face sides of these guides are of rounded form, and encompass the die or former G, so that when said dic or former is in an elevated state the edges of the side pieces or strips will bear or rest upon the upper parts of the guides as shown clearly in Figs. 1 and 3. Each side piece or strip, e, is connected by'ajoint, j, to the upper end of an elastic or yielding rod, la. The ends of the side pieces or strips, e, at the angles of the plate, are not in contact when the pieces or strips are in a horizontal position, the ends forming angles of forty-ve de grees with the edges of the pieces or strips. The object of this is to allow the ends of the pieces or strips to be in contact with each other when the plate d is depressed, as will be hereinafter referred to.

The operation is as follows: A sheetmetal plate, l, (shown in blue,) is cut of the required size, which size is equal to the plate Zand distended side pieces, c, of the lower die G.

(See Fig. 1.) The die G is kept in an elevated position by the springs h when the die F is raised. Vhen the plate Z is placed on the lower die, G, as shown in Fig. 1, the upper die, F, is depressed by turning the cani D, which It may be a shell of requisite thickness to insure a proper degree of operation is effected by levers m, attached to the end of the shaft E. When the plate or bottom a of the die F strikes the plate Z, the die G is forced downward, and the side pieces, e, as the plates a cZ descend, are pressed inward in consequence of the bearing of their outer edges against the guides t', and the edges of the plate Z will be bent by the side pieces, e, against the sides b of the upper die` F, and when the upper die, F, is fully depressed the upper parts c of the sides b will bend over the upper parts of the sides of the plate Z, as shown clearly in Fi'g. 4. In thus bending the plate Z it will be seen that the superfluous metal at the corners of saidplate, orwhat niaynow be termed the body of the pan or vessel, will be compressed, and will project out from the body, as shown clearly at a in Fig. 6. Vhen the levers m m are relieved or set free, the die G will rise by the action of the spr-ings h, the body of the pan or vesselv is removed, and another plate placed on the die G for a succeeding operation.

Onthe base A two uprights, H'H, are secured. Between these uprights two crossheads, o o, are fitted and connected by a vertical bar I. The cross-heads are `allowed to work freely up and down between the uprights H H, and the lowerv cross-head is connected by a rod, J, with a treadle, K, the upper cross-head by a link, p, with a spring,

L, which has a tendency to keep the crossheads o o elevated.

. To the lower end of bar I a block, q, is attached, as shown clearly in Figs. l and 2, and to this block the upper ends of two arms, r r, are pivoted. The lower ends of the arms r are pivoted to the lower ends of the levers L L, which work on pivots or fulcrum-pins,s,

which are fitted in a Xed horizontal bar, M, attached to the uprights H H, a pin .s 'being near each end of the bar M. The upper ends of the levers L L are provided with lips or jaws, t, one on each lever. These lips or jaws form right angleswith thelevers L, and when the treadle K is depressed they Aare forced overthe upper surfaces of blocks or beds N, which are attached to or formed on a horizontal'bar, O, attached to the uprights H H.

It will be seen that the levers L L are actu-- ated as the bar I is depressed by the arms r r.

- After the body of the pan is formed as previously described, its ends are .fitted or placed over the blocks or beds N, as shown in blue,

- Figs..1 and 2, and, the treadle K being then depressed by the foot, the levers L L are moved'or actuated, and the lips or jaws t are forced over the blocks or beds N, and bend and press down snugly the projections a against the sides of the body of the pan or vessel, as shown in red, Fig. 6.

` Y The wiring of the edges of the pan or vessel is effected as follows: To the upper ends of the uprights H II bearings e e are attached. In these bearings the axes of a segment pressure-bar, I), are fitted. This bar transversely is of segment form, as shown clearly in Fig.

l 1, and is connected by arms w to its axes or journals. 1 The bar P is connected by a link, ax, to the bar I, and two inclined or beveled projections, bx, are attached -to the upper end of the bar I, as shown in Figs. 1 and 2.

Between the two bearings e e a bar, Q, is placed. The ends of this bar are provided with journals cx. The lower front edge of the bar Q has a longitudinal rabbetor gain, cZx, made in it, as shown clearly in Figs. 1 and 7. The journals cx are placed atthe lower parts of the ends of the bar Q and near its front side, so that the center of motion of the bar Q, or the line of its axis, will be at the lower part of. the front side of the bar, as shown at ex. (See Fig. 7.)

Directly below the bar Q a fixed horizontal bar or bed, R, is placed. This bar or bed is attached toI the uprights H H. The'wire Sis bent in quadrilateral form, as shown in Fig. 8, and is placed underneath the upper bent edges of the sides ot' the pan or vessel, and these upper edges are placed (one at a time, of course) upon the bed K and below the segment-bar P, as shown clearly in Fig. 7. The treadle K is then depressed, and the bar I, as it descends, throws the segment-bar P down, in consequence ofthe attachment of the bar I to the segment-bar F by means of the link ax. This bar I? forces the bent edge of the side of pan or vessel Z and also the wire into the recess or gain cZx in the bar Q, as shown in red, Fig. 7, and when in this position the bed R is moved outward by the action of the link, and at the'same time the oblique sides of the projections bx willactuate the bar Q and cause the edgef at the upper part of the gain to clew the edge of the side of the pan or vessel snugly over the wire, as shown in red, Fig. 1. The edges of :the fourvsides of the pan or vessel are closed successivelyaround the wire, and the pan or vessel is then completed.

The device for swaging the body of the pan or vessel and the device for folding or bending over the projections a after the body of the pan or Vvessel is formed are necessarily described in this specification, for they are both essential in order to complete the work; but, as these devices are not operated con imately form subjects for separate applications; therefore I do. not claim such parts in this application.

Having thus described my-invention, what I claim as new, and desire to secure by Letters Patent, isw

The combination of the segment-bar l?, vibrating bar Q, and bed R, the bar P being operated from the sliding bar I through the medium of the link ax, and the bar Q being actuated by the beveled or inclined projections thepurpose set forth.

' E. A. SMEAD.v Witnesses:

C. M. PLACE,

F. CAREY.

jointly, the swaging and folding devices legitbx, the whole being arranged as described, for

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