US471523A - Temperature-regulator - Google Patents

Description

2 Sheets-Sheet 2.

(No Model.)

J. P. MOBLROY. TEMPERATURE REGULATOR.

Patented Mar. 22, 1892.

Ina/@WWW Ja/m/e FHLZ' roy i UNrrEn STATES PATENT OFFICE.

JAMES F. MOELROOF ALBANY, NEW YORK.

TEMPERATURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 471,523, dated March 22, 1892.

Application ledf'ehruary 11, 1891. Serial No. 381,103. (No model.)

To all whom it may concern:

Be it known that I, JAMES F. MGELROY, a citizen of the United States, residing at Albany, in the county of Albany and State of New York, have invented certain new and useful Improvements in Temperature-Regula tors, of which the following is a speciiication, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in temperature-regulators; and the invention consists in the peculiar construction of a temperatureregulator whereby it may be adj usted to open or close a valve or damper at varying temperatures, and, further, in the peculiar construction of the connecting mechanism between the temperature-regulator and the valve or damper, and, further, in the peculiar construction, arrangement, and combination of the various parts, all as more fully hereinafter described.

In the drawings, Figure l is a front elevation of my improved damper-regulator, showing the connections to the valve and the valve and one of the elbows in section. Fig. 2 is a vertical central section through the temperature-regulator, partly in elevation. Fig. 3 is a vertical section through the elbow.

A is the frame of the temperature-regulator, which is centrally provided With a screwthreaded aperture, in which. a .block or plug B, having a suitable screw-threaded shank, engages. To this block is secured an expansion-chamber C, preferably formed of two circular disks secured together at their edges. This expansion-chamber is provided on its front face centrally with a bearing-plate D, which bears against the lever E, pivoted at the lower end of the frame and extending to near the top thereof, where it engages with one end of a bell-crank lever F, pivoted in the frame, the other end extending to the rear of the frame, where it is connected with a vertical actuatingrod G. This rod is screw threaded and is provided with lock-nuts H, adapted to strike against a rod or flange I to limit the movement of the rod, so as to prevent damage to the valve or valve-seat. This rod connects at its lower end with the upper end of the rod J, which is suitably guided through the frame of the machine.

K are lock-nuts on the rod J, against which l the spring L bears to hold the valve normally in it open position.

The frame A is provided at its lower edge with a screw-threaded socket M, into which a pipe N engages, this pipe vforming a rigid frame to connect the valve casing of the steam-supply valve with the frame of the ternperatureregulator, so that the valve-casing arid temperature-regulator frame may always remain at a fixed distance apart. It frequently happens in such constructions that the temperature-regulator cannot be placed directly over the valve, in which case it becomes necessary to use an elbow O in the pipe N. This elbow is of such shape as to allow of a bell-crank lever P being pivoted therein upon a pin Q, which 'I preferably cast integral with the elbow-casing. One arm of the bell-crank extends in line with the vertical pipe Nand the other arm extends in line with the horizontal section R, which extends a suitable distance to a point over the Valvecasing S, another elbow with a suitable bellcrank lever being placed over the valve to give a vertical movement to the valve-stem, as'plainly shown in the drawings. One side of the elbow is open, and this is adapted to be closed by means of a face-plate S', which has a lug T against the end of the pin Q to hold the bell-crank lever upon its pivot. It is also provided with a suitable aperture to receive a screw T entering a hollow post U to secure the cap in position. By means of this construction I am enabled to construct a rigid frame from the frame of the temperature-regulator to the valve-casing, making all necessary bends.

As the pins upon the ends of the bell-crank lever loosely engage in the ends of the rods, being held from displacement by the plate S it is evident that if that plate is taken out the bell-crank lever is detached by simplywithdrawing it from its pivotpost and withdrawing the pins from the ends of the connecting-rods.

In order to vary the operation of my thermostat, I connect to the block B a suitable hand-lever U', by means of which the block, together with the expansion-chamber, maybe turned. The turning of this block by means l of the screw-threaded shank engaging in the screw-threaded aperture carries the expansion-chamber toward or from the lever E, requiring a greater or less expansion in the expansion-chamber to effect said lever and the valve. r.

I have found that with a comparatively small movement of the lever U I could vary thev point at which the valve would be'. closed from eight to ten degrees.

What I claim as my invention is 1. The combination, with a thermostat, its frame, and a valve controlled thereby, of a rigid frame connecting the Valve-casing and thermostat-frame and comprising an elbow or bend,a bell-crank lever piaoted inf the elbow, 4

and an actuating-rod connected thereto and extendingon both sides thereof,substantially as described.

2. In a.. temperature-regulator, the combiP nation withihe-frame, of a thermostatconsi'stingr of, a cell; containing an eXpansi-ble medium, acentralscrew-.threaded shank secured,

to saidcelhandalever for rotating. Saidcellandv L adjiisting itto orvilrom theactuating, medium, substantially, as described. 3;4 The combination, with. a. ltemperatureregulator and a rigidtnbular frame connectl ing the frame of the regulator with the Valveg casing, of an elbow O, having a pin cast integral therewith, a bell-crank lever having a vsocket formed thereon adapted to lit upon said pin, and bearings at the end of said lever to connect with the actuating-rods,sub

stantially as described.

4. Ina device of the kind described, the combination, with the tubular frame, of the elbow O, having the pin Q cast integral therewith, the bell-crank lever P, and the faceplate S', forming a cap for the pivot-pin Q, the parts being arranged to operate substantia'lly as andy for the purpose described.

.5i In a temperature-regulator, the combi- Anatiomwith a supporting-frame and valveractuating mechanismen the frame,of a thermic cell arranged between` the mechanism and.z the frame, a.` supportingproj ectifon on the v cell, and an adjnstable connectionl between the projecticm4 and frame, substantially as-de scribed. l In testimony whereofI afx my signature in Qpresence of two witnesses. f JAMES F. MCELROY.`

Witnesses:

H. J.. NoDINE.

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