US68897A - Peters - Google Patents

Description

@uiten gisten gutem @frn BENJAMIN F. PERKINS, Y HOLYKE, MASSACHUSETTS. Letters PatentN. 68,897, dated September 17, 1867.

IMPROVEMENT IN STEAlili-TRAPS,l

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, BENJAMIN F. PERKINS, of Holyoke, county of Hampden, and State Aot Massachusetts, have invented a new and improved Steam-Trap, to better accomplish the discharge of air and water of condensation, and retain the steam in steam apparatus in general; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which i Figure 1 is a front elevation in section.

Figure 2, a side elevation, and

Figure 3 an elevation of the plates, representing. the form they take on becoming heated and expanded.

The same letters indicate like parts in each of the figures. l

My invention consists in the construction and arrangement of parts as herein described. C and C are'the outside case, of any convenient form, the two parts being screwed or bolted together. i A is the inlet, and B the outlet; D 'is a valve, made in any of the known "forms, but I prcfera three-winged valve, as represented, for closing the inlet A. E 1-2-3-4 are compound plates made of two unequal-expanding metals, as brass and steel, these being the cheapest and most durable, the two being closely fitted and riveted together and arranged us follows: E 1 with the brass side up, E 2 with the brass side down, with the brass'silde up, E 4 with the brass side down. I and I are ribs on the insid'e of the case C', to prevent lateral-motion of the plates E-and prevent their being displaced in any Way. G is a spindle passing through the bottom of case C, with a valveshaped shoulder, as at J, fig. l, to prevent leakage. On the top of G is a nut, F, with flanges on two sides toenvelop E 4, and prevent the nut F from revolving when the spindle G is turned. H is u nut ou the low-er end of spindle G, on the outside of case C', to fasten the spindle G in any position required. VThe lower end of spindle G is squared to receive a wrench for turning. the same.

Having fully described the construction of my trap, the operation is as follows; When theplates'E 1-2- 3-4 are cool the valve D is always open, so that air and water of condensation can freely pass through, but on the approach of steam the plates E 1 2-3-1 become heated and take the form as represented in iig. 3, E 1-2-3-4, the brass taking the convex, and the steel the concave form in all cases. This closes the valve D7 preventing the further egress of steam. Turning the spindleG will raise the nut F; that raising the plates E 1-2-34 will adjust the valve D, so that the water of condensation can be `passed from the trap `at any temperature.

The advantage of this arrangement is a very compacncheap, durable, and4 eicient trap; when not in use always open; readily adjusted when in operation; not aiected by the frost; when properly adjusted the nut H will retain it in that position. With this arrangement of plates, I am enabled to make a very compact trap, with unlimited power, action, and capacity, thps combining many good qualities.

Having fully described my invention, its construction and operation, what I claim as new, and desire to secure by Letters Patent, isi 1. I claim a steam-trap operated by two or more compound plates, so arranged that the expansion or contraction of one is conveyed to'the second, and of those two to the third and last and valve' D, as represented at 2. Also the spindle G and nuts Fand H, the whole4 arranged and combined as herein described and forithe purpose specified. t

n. F. PERKINS.

Witnesses:

S. F. BARRETT, Gnarls Moons,

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