US705192A - Water-gage. - Google Patents

Description

UNITED STATES PATENT Ormes.

FRANK M. ASHLEY, OF BROOKLYN, NEW YORK.

WATER-GAG E.

SPECIFICATION forming part of Letters Patent No. 705,192, dated July 22, 1902.

Application iiled April 20, 1899. Serial No."7l3|8l2. (No model.)

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Be it known that I, FRANK lVLIAsHLnY, a citizen of the United States, residing at the city of New York, in the borough of Brooklyn and State of New York, have invented certain new and useful Improvements in Water- Gages, of which the following is a full, clear, and exact description.

My invention relates to watergages for steam-boilers and similar apparatus, and has special reference to double gages in which there are two glasses communicating with the boiler through independent passages in two conduits one above and the other below, whereby the boiler need be tapped in but two places to accommodate the two gages. The general object of such device is to insure a correct indication of the level of the water in the boiler. The passage leading to one of the glasses may become plugged up by sediment, as is sometimes the casein single-glass gages; but it is quite unlikely that the indepondent passages leading to both glasses will ever become plugged at the same time. Thus if it is ever noticed that the water stands at different levels in the two glasses it is an indication that one of the glasses is plugged, and the obstruction may be removed by blowing out the gage. So long as the water is at the same level in both glasses it is reasonable to suppose that such level is a correct indication of the level of water in the boiler.

The present invention is a means for automatically shutting off the steam from the gage whenever by accident or otherwise one of the glasses is broken or removed. It also comprehends means for putting the uninj ured glass into operative condition for use while the broken or injured glass is being removed.

In the accompanyingdrawings, Figure lis a front elevation of a double gage with the upper and lower fittings shown in section. Fig. 2 is a section taken on line n of Fig. l.

Referring to the drawings by letter, A A indicate the two gage-glasses, supported between an upper fitting B and a lower fitting B. These two iittings each have a pipe or conduit b tapped into the boiler. The glass A communicates with the chamber a, while the glass A communicates with the chamber d', said chambers leading, respectively, into independent passages a2 and a3, extending through the pipe b, said independent passages being formed by a iixed partition b'. This partition extends throughout the length ofthe pipe b and is provided with an axial longitudinal enlargement h2, through which a valve-stem c passes and has its bearing. The valve c on the inner end of this stem is located inside of the boiler and is adapted to seat against the end of the pipe Z) and close both of the passages a2 and CL3. At its outer end the valve-stem is fitted with a handle or wheel c2, by which the stem can be reciprocated and turned. This arrangement of passages `and valve occurs both at the upper and lower ends of the gage. The function of this valve is to stop the escape of steam or water when a glass breaks or is removed. If the glass breaks, the rush of steam will drive the valve against the end of the pipe and close off the passages and prevent more than a momentary escape. By pulling and turning on the wheel c2 at the same time the valve may be ground to its seat.

Having'described my invention, I claimm l. In a double gage a iitting provided with a single pipe leading to the boiler and having two independent passages through it communicating respectively with the two gageglasses, in combination with` asingle valve adapted to close automatically when a gageglass breaks, and shut oif the steam from both glasses and having a stem bearing in the partition separating the passages.

In a double gage a fitting provided with a single pipe leading to the boiler and having two independent passages through it communicating respectively with the two gageto close automatically when a gage -glass breaks, and shut oif the steam from both glasses, said valve being located at the inner end of said pipe, and having a stem bearing in the partition separating the passages, sub stantially as described.

In witness whereof I subscribe my signature in presence of two witnesses.

FRANK M. ASHLEY.

Witnesses WM. A. RosENBAUM,

FRANK S. OBER.

glasses, in combination with a valve adapted y

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