US654631A

US654631A - High or low water alarm for boilers.

Info

Publication number: US654631A
Application number: US74046199A
Authority: US
Inventors: Eugene D Hays
Original assignee: FRED DE WITT GOODWIN; JOHN W GRIFFENBERG; WILLIAM C HAYS
Current assignee: FRED DE WITT GOODWIN; JOHN W GRIFFENBERG; WILLIAM C HAYS
Priority date: 1899-12-15
Filing date: 1899-12-15
Publication date: 1900-07-31
Anticipated expiration: 1917-07-31

Description

Nu. 654,63l.v Patented luly'sl, |900. E. n. HAYs.- HIGH 0R LOW WATER ALARM FOR BOILEBS.

(Application med mc. 15,1899.) (No Modal.)

FIG. 1. FIG.

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W/L'tnesses .man f77/venan' m: Nonms grens co. vnoroiwnu.. WASHINGTON, n. c.

Harman STATES PATENT Ormes.,

EGENE D. HAYS, `OF,PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF 'IWO-THIRDS TO JOHN W. GRIFFENBERG, FRED. DE'VITF GOO-DVIN, ANDNVILLIAM O.VHAYS,

von SAME PLAGE.

HIGH OR LowwATER ALARM Foa sodass.

SPECIFICATION forming part of Letters Patent No. 654,631, dated July 31, 1900.

` Application filed December 15, 1899. Serial No. 740,461. (No model.)

in high and low water alarms for boilers or One object of the said invention is to con-k structawater-gage for boilers ortanks in such a manner that an ala-rm will be given when the water rises or falls above or below certain given points, a further object being to avoid the complicated mechanical construction usually used in such devices, which are imprac.

tical and costly.

The invention ismore fully described here. inafter, reference being made to the accompanying drawings, in which- Figure l is a perspective'view of my invention applied to the ordinary water=colu1nn ofv a steam-boiler. Fig. 2 is a vertical sectional view; and Fig. 3 is a cross-sectional view on line 3 3, Fig. 2.

Referring to the drawings, A represents a water-column of a steam-boiler, with which connection is made with the gage or alarm at B and C, each connection being provided with valves B and O', said valves having couplings b and c, and between said couplings is interposed a glass column D.

The device so far as above described corresponds with the ordinary water-glass of steam-boilers. The connections B and C be# ing open, they water will appear in the glass at a level corresponding to that in the boiler.

The valve C is provided with a coupling c', by which is secured to the said valve a glass tube E. Said tube is curved, and its opposite end secured to a stop-cock F, from which connection is made with the boiler by means of the tube G, the elbow g, the pipe g, and the valve B. rllhe curved tube E is provided with electrical termini H, H', and H2, each having a contact-point h projecting vtrical terminal.

between thetermiual H, with which the mercury is always in contact, and the terminal H', thereby ringing a bell. When the water in the boiler and in the column D rises, the

additional Weight of water will depress the l mercury and break the' circuit between termini H and H2; and if the water rises beyond a point j, Fig. l, the mercury will be forced around the curved portion of the tube E'until it reaches the terminal H', when connection will be made with the terminal H and an alarm given.

Fig. 3 shows the construction ot' the elec- A binding-post is secured to a band e, which encircles the glass tube E, the said band having projections e', between which is clamped the platinum contact-point, which is embedded inside of the glass tube and extends-through the center of the same.

The stop-cock F is used for drawing oft the water that may collect from the condensation of the steam in the column G. Normally the stop-cock is turned, so that there will .be a free passage between the mercury and the boiler, thus allowing the steam-pressure to act equally on the surface of the mercury and the surface of the water; butwhen used for drawing off the water the stop-cock is arranged so as to prevent the mercury from being forced into the tube G or carried off with the escaping water.

In place of ringing a bell it may be desirable to operate a pump or injector by starting or stopping the same with the electrical current, any of which devices may readily be operated by my invention.

The tube D between the valves B' and C could be omitted, as the weight of the water in the boiler would still have the same effect on the mercury, and the stop-cock F could likewise be omitted when the device is used on tanks Where provision does not have to be made for the condensation of steam.

Having thus described my invention, I claim and desire to secure by Letters Patentl. The combination, in a high and low Water alarm for boilers er tanks, of a vertical tube or gage-glass, a vertical tube extending parallel With said gage-glass and connected therewith at the top and bottom, a dependent curved connection having,` electrical termini inserted therein, electrical contacts, mercury in said curved connection to complete or break an electrical circuit between said Jtermini thereby giving an alarm, and a stop-cock F having couplings thereon to receive the tubes, substantially as described.

2. The combination, in a high and ioW Wa* ter alarm for boilers or tanks, ot' a vertical tube D, a tube G, a dependent curved tube having,` electrical termini inserted therein, mercury in said curved tube to complete or break an electrical circuit, electrical contacts, binding-posts provided with bands 'for attaehing` the same, an electrical terminal ll continuously in contact with the mercury, termini Il' and H2 arranged so that the mercury may come in contact with either and complete an electrical circuit, a suitable electrical device for giving` an alarm, a stop-cock F, fittings thereon to receive the tubes and iittings c and c on the valve @substantially as described.

n testimony whereof l have affixed my signature in presence of two Witnesses.

E UGENE l). HAYS.

Witnesses:

JOHN E. MCCULLY, THOMAS G. Hluvnns.