US66879A - olmsted - Google Patents

Description

T0 ALL WHOM IT MAY CONCERN:

Quitar @tutes latimt @fitta L. H. OLMS'IED, OF STMFORD, C ONNECTIGUT. Leiters Patent IVO. 66,8'1'9, dated July 1G, 1867.

IMPROVEMENT IN DROB-HAMMLRS.

1G-Ile Sdgrtnlt ufcmh tu in tlgrse tttrts lntcut mit making pact nf tige 5min,

Bc it known that I, L. II. OLMSTl-ID, of Stamford, in the county of Fairtield, and State of Connecticut, have invented a new and improved Drop-Press; and I do hereby declare that thc following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the sume, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a front view of my invention.

Figure f2, a side view of the same.

Figure 3, a horizontal section of the same, taken in the line :v fr, tig. 1.

Figure 4, a vertical section of a portion of the same, taken in the line y y, fig. l; and

Figure 5, a plan or top view or" the same, with the driving-pulley in section.

Similar letters of reference indicate corresponding parts.

This invention relates to a new and improved drop-press for swaging, punching, and like purposes, and it consists of a novel automatic mechanism, as hereinafter` fully shown and described, whereby the driving-pulley .of the machine may be operated continuously, and the rising and falling weight placed under thc complete control ci' the operator.

A represents a. base-block,I to which two uprights, B B, are attached, said uprights being of a suitable height, and connected at their upper ends by a cross-bar, C, as shown clearly in fig. 1. On each end ofthe cross-bar C there is an ear or lufT a, and these ears or lugs serve as bearings for a horizontal shaft, D, having a pulley, 5,

open with a strap, E, attached, the letter having weight, F, at its end. The weight F is allowed to rise and4 fall freely between the uprights B B, which serve as guides for the same, the weight having vertical grooves c c made in ifto receive the uprights, as shown clearly in fig. 3. On the shaft D there is also keyed a ratchet, G, with which a pawl, H, engages, said pawl being pivot-ed to one of the ears or lugs, a, and having a cord, el, attached to its outer end, which may extend down to a treadle on the flooring on which the base-block A rests. I is a driving-pulley, placed loosely on the shaft D at one end of This pulley is hollow, or of shell form, (sec figs. 2, 4, and 5,) and its inner side has two horizontal concentric anges, c e, which form au .annular groeve, f, to receive a pin, g, which is of oval form in its transverse section, as shown in g. 4. This pin g is constructed with ajournal, i, which passes through an arm, t, attached to the shaft D, and the outer end of saidjournal is; connected to an arm, j, which has a set-screw, 7c, passing through its outer end, the set-screw bearing against u. slidingr or adjustable wedge, Z. This wedge Zis attached to a collar, m, which is fitted loosely on the shaft D, so that it may slide thereon, but it is connected with the shaft by means of a 'feather and groove, so that it may, turn with the shaft at all times. J is a vertical shaft, which isby the side of one ofthe uprights B, and has its lower end stepped in the base-block A, said shaft passing up .through the cross-bar C, which serves as an upper bearing for it, and having au arm, n, projecting horizontally from its upper end, the arm n being connected by a bar, K, with the sliding-collar m, to which thewedge Z is attached. The bar K is provided with a pendent forli, o, to it in a groove made circumferentially in the collar. This mode of connecting the bar K with thc collar m admits of the latter rotating with the shaft D, and at the saine time allows the bar K to slide the collar. On this shaft J there `are two arms, L Lone, L, being at its lower, and the other, L', at its upper end. The position of these arms on the sha-ft J is shown clearly in fig. l.

The operation is as follows: The pulley I is turned with a continuous motion, and the weight F is raised by the winding of the strap E on the pulley b whenever the pulley I is connected with the shaft D. rj his connection is formed by the pin g binding or wcdging itself between the flanges c c of the pulley I, which is donc by the wedge Zbeing forced between the arms 'ij and turning the piu g in a radial position with pulley I, the wedge Z, when forced between said arms, moving the arm and consequently the pin g, which is attached to said arm.. The wedge Zis moved, of course, withthe slidingcollar m, and the collar is moved by the bai-.IQ attached to the arm 11 on the upper-*Vend of the shaft I. As the weight F reaches its highest point, it actuates the upper arm L on the shaft J, turns said shafta-certain distance, and thereby actuates the bar K, so that the latter will move' the collar inail-d` draw out the wedge Zfrom between the arms ij, and thereby free lthe pulley Ifrom the shaft D. The weight F would now fall by its own gravity were it not for the pawl H engaging' with the ratchet G, and when the operator wishes the weight to fall, he simply pulls the cord KZ, or actuatcs a tieadle, to which said cord is attached, und thereby raises the powl Hfrom the ratchet G, and the weight F descends, the weight as it reaches its lowest point striking thc lower arm L, :md thereby 'actuating the shaft J, so that the ber K will force the Wedge Z between the arms j and move the-pin g, causing the lutter to bind between the Hongos e e, and forming e connection between the pulley I and shaft D, so that the weight F will again risc, and so on. l'. will be seen-that if nfrapid continuous rising and falling movement of the weight F is required, the pawl H is kept free from the ratchet G. It will, of course, be understood that the weight F und bese-block A have proper dies or punches attached according to'the work to be performed.

I lo not claim the friction driving-pulley l, but I (lo claim as new, and desire to .secure by Letters Patent- 1. The combination of the friction driving-pulley I and shaft D, with the devices for engaging und disengaging the one from the other, consisting,` of the weight F, the upright shaft J provided with the arins L Lf, the bnr K, attached te en arm, 1L, on the upper end of seid shaft, end the, sliding-collar m, on shaft D, all arranged to operate in connection with a. friction-clutch pulley, substantieliy as set forth.

2. I further claim the retchetG and powl H, in combination with the mechanism sct forth in first clause of claim, substnnticlly'as and for the purpose specified.

L. H. OLMSTED.

Witnesses:

M. M. LIVINGSTON, ALEX. F. ROBERTS.

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