US234358A - Gustavus g - Google Patents

Description

(No Model.)-

G. G. WAGNER.

Indicating Time By Gas Pressure.

No. 234,358. Patented Nov. 9,1880,

-FETERS, PHOTO-LITHOGRAFHER WASHINGTON. I: C.

UNITED STATES GUSTAVUS Gr. WAGNER, OF NElV YORK, N.

PATENT amen,

INDICATING TIME BY GAS-PRESSURE.

SPECIFICATION formingpart of Letters Patent No. 234,358, dated November 9, 1880.

Application filed April 7, 1880.

To all whomit may concern Be it known that I, GUSTAVUS Gr. \VAGNER, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Indicating Time, of which the following is a specification.

The general object of this invention is to utilize the pressure of gas in the street gasinains of a city or town for the purpose of indicating to the inhabitants certain periods of time, as the hours or half-hours, such time being determined at the gas-works.

This invention is illustrated in the accompanying drawing, which shows the apparatus generally employed. t

The letter A designates a gas-main, which extends from the gas-reservoir, a portion of which is shown at B, and the major part of which is laid down in the streets of a city or town, as well known.

0 designates a service-pipe, whereby gas is conveyed from the gas-main to abuilding; and D a gas-pressure indicator, connected to the gas-main through the medium of the servicepipe, such indicator being in most cases located within the building. This gas-pressure indicator may be constructed in a variety of ways well known to those skilled in the art, and needs no description.

In carrying out my invention the indicator D is so arranged that it becomes set in an intelligible manner when the pressure of the gas in the gas-main rises to a degree above or beyond the maximum normal pressure-namely, the pressure required to supply the city or town with gas for illuminating purposesthat is to say, the indicator is necessarily thus arranged, whereas it is optional to arrange the same to show also a lower degree of pressure.

At intervals of anhour, a half-hour, or any other period that circumstances or convenience may dictate, I increase the pressure of the gas in the gas-main A to a degree above the maximum normal pressure therein by letting on an additional quantity of gas from the reservoir; and since the indicator D is set by that means the same is practically a time-piece corresponding to the one whereby the periods at which the gas-pressure is increased is de- (No model.)

termined. Hence if a number of pressure-indicators corresponding to this indicator D are distributed throughout a city or town the measure of time at the gas-works becomes the standard for the whole of such city or town.

In the gas-main A is arranged the usual gassupply valve E. In connection with this gassupply 'alve 1 use what I term a tim e-valve, F, the same being arranged in a branch pipe, G, which is connected to the gasmain A on opposite sides of the gas-supply valve. This time-valve F may be constructed in various ways, and by its means the pressure of the gas in the gas-main A can be increased independently of the supply-valve E, making the latter a regulator merely for the normal pressure of the gas, which is a desideratum; but it is obvious that the gas-supply valve E also is adapted to the purpose of the time'valve F.

Vith the timevalve F, 1 connect a mechanism which is constructed to open and close the same automatically at'fixed intervals, so that the time-valve is rendered self-acting.

A mechanism adapted to the purpose of opening and closing the time-valve F can be readily devised by a skilled mechanic, and a description thereof is therefore deemed unnecessary.

The general location of the mechanism referred to is shown at G, and its connection with the time-valve is effected by gearing H or other suitable means.

What I claim as new, and desire to secure by Letters Patent, is

l. The within-described method of indicating time by connecting to a street gas-main a suitable gas-pressure indicator and increasing the pressure of the gas in such gas-main to a degree above the maximum normal pressure therein at fixed intervals, thereby setting the indicator.

2. The combination, with a gasmuin and the gas-supply valve to such main, of a branch pipe connected to the gas-main on opposite sides of the supply-valve, a timevalve arranged in the branch pipe for the purpose of increasing the pressure of the gas independently of the supply-valve, and a gas-pressure indicator connected to the gas-main, substantially as described, for the purpose set forth.

3. The combination, \vithagas-inain and the stantially as described, for the purpose set gas-supply valve to such main, of a branch forth. pipe connected to the gas-main on opposite In testimony whereof I have hereunto set sides of the supply-valve, a time-Valve army hand and seal in the presence of two sub- 5 ranged in the branch pipe for the purpose of scribing witnesses.

increasing the pressure of the gas independ- GUSTAVUS G WAGNER.

cntly of the supply-valve, a mechanism con- 1 structed to automatically open and close the WVitnesses: tiinc-"alve at fixed intervals, and a gas-press- \V. HAUFF,

10 we indicator connected to the gas-main, sub- CHAS. VVAHLERS. J

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