US291272A

US291272A - William t

Info

Publication number: US291272A
Authority: US
Publication date: 1884-01-01
Anticipated expiration: 1901-01-01

Description

I (No Model.)

W T. BATE. LOW WATER ALARM.

Patented Jan. 1,1884.

EEWNHW J Q 'Hhi UNITED STATES PATENT WILLIAM T. BATE, or ooNsHoHocKnN, rENNsYL vnNrA;

LOWQWATER ALAR M.

SPECIFICATION forming part of Letters Patent No. 291,272, dated January 1, 1884.

Application filed November 6, 1252. (No model.)

To all whom it may concern:

.Be it known that I, WILLIAM 'l. BATE, a citizen of the United States, and a resident of Conshohocken, Montgomery county, Pennsylvania, have invented certain Improvements in Low-Water Alarms for Steam-Boilers, of which the following is a specification.

My invention relates to an improvement in that class of low-water alarms or boiler-feed ers in which the'whistle or feed valve is under the control of a float in a vessel communicating with the boiler, the objects of my invention being to construct an effective device of this class, and to provide for the sounding of an alarm or the control of the watersupply upon an undue movement of the float in either direction.

In the accompanying drawings, Figure 1 is a side view, partly in section, of my inven tion applied to an alarm forsteam-boilers; Fig. 2, an enlarged perspective view of part of the same, and Fig. 3 a view showing a modification of oneof the features of the invention.

is avessel, of any suitable size and shape, communicating at the upper end with the steam-space of the boiler through a valved pipe, at, and at the lower end with the waterspace of the boiler through a valved pipe, b, so that the'water in the vessel A is always maintained at the same level as that in the boiler.

Within the vessel A is a hollow float, B, from which projects a tubular stem, (1, the latter passing through a stuffing-box on the top of the vessel A, and being guided. at the upper end in a bracket, 6, secured to a post, E, projecting from the said vessel A.

To the stem d are secured two tappets, f and g, each having a projecting finger, the end of which is adapted to a slot in the post E, so that the tappets are prevented from turning on the stem d.

On the steam-pipe a is a branch, h, carrying a steam-whistle, F, of ordinary construction, and on the valve=casing of the whistle are projecting arms 42 e, to which are hung arm of each lever carries a two bell-crank levers, m and a. The long roller, 19, and the the short arm of the lever m is adapted to bear upon the end of the valve-stem w, the short arm of the lever n being forked, so as to em brace the stem 10,.and being adapted to bear upon a shoulder formed upon said stem. As

the water-level in the boiler rises or falls, k

there is a like change in the level of the Water in the vessel, A, anda rising-and-fallingmovement of the float B. Should the float fall to an undue extent, the tappet f comes into contact with the roller 1) of the lever m, and actuates the latter so as to impart an inward thrust to the valve-stem, thereby opening the valve and causing the sounding of the whistle. Should the float rise above the proper height, the same result will be effected through the medium-of the tappetg and lever a. By properly adjusting the tappets f and g in respect to each other on the stem (1, any desired amount of rise and fall of the float B may be permitted before the alarm is sounded.

Instead of using two tappets, f and g, asingletappet may be used, as shown in Fig. 3, said tappet being adapted to act directly upon the lever m, but acting upon the lever a through the medium of a guided rod, x, to a slot in which the tappet is adapted.

In place of or in addition to operating the whistle-valve, the device may be employed to operate the valve in the feed-pipe of the boiler, and when it is not desired to indicate an undue rise in the water-level, the lever a and the devices'for operating the same may be dispensed with. A solid stem may be used in place of the tubular stem at; but the latter is preferred, as it prevents the ac cumulation in the float B of water which may gain access thereto, the water being vaporized, and the vapor escaping through the said tubular stem.

In the present instance I have shown the vessel A as provided with the water-gage usually attached to the head of the boiler. The gage-cocks may also be applied to the vessel A, and the formation of a number ofopenings in the head of the boiler thus rendered unnecessary.

I claim as my invention 1. The combination of the vessel A, communicating with the steam and water spaces of the boiler. the float B, having a stem, d, with an adjustable tappet, f, and alarmwhistle and its valve, and a lever, m, adapted to act directly upon the stem of the valve, and In testimony whereof I have signed my name 10 projecbinginto the path of the tnppetf, as set to this specification in the presence of two subforth. scribing witnesses.

2. The combination of the whistle-valve having a stem, w, two levers, m and n, both WILLIAM T. BATE. adapted to act directly upon said stern, the Vessel A, and a float, B, having a stem, (1, \Vitnesses: with tappet or tappets for actuating the levers HARRY DRURY, m and w, as set forth. HARRY SMITH.