US797664A - Automatic gas-pressure regulator and cut-off. - Google Patents

Description

No. 797,664. PATENTED AUG. 22, 1905.. J. W. GOTTINGHAM & G. W. FRANKLIN. AUTOMATIC GAS PRESSURE REGULATOR AND GUT-OFF.

APPLICATION FILED MAR. 16. 1905.

WITNESSES: VENTOHJ 7% M $44M f/lw/ Arm v UNITED STATES PATENT OFFICE.

JOHN W. COTTINGHAM AND CHARLES l/V. FRANKLIN, OF LEIPSIC, OHIO,

AUTOIWATBC GAS-PRESSURE REGULATOR AND CUT-OFF.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed March 16, 1905. Serial No. 250,390-

;Z'o all whom it may concern.

Be it known that we, JOHN W. CoT'rINenAM and CHARLES W. FRANKLIN, citizens of the United States, residing at Leipsic, in the county of Putnam and State of Ohio, have invented new and useful Improvements in Automatic Gas -Pressure Regulators and Cut- Offs, of which the following is a specification.

This invention is an automatic gas-pressure regulator and cut-off intended for the purpose of regulating gas-pressure and for cutting off the supply when the pressure fails, at the same time sounding a signal to give notice of that fact.

A. further feature is the sounding of another signal when the gas pressure or supply comes on again.

The invention is characterized by improvement in the features above referred to and also in other features, as will be more fully apparent from the following description.

The accompanying drawing is a sectional elevation of the apparatus.

Referringspeciiicall y thereto, the apparatus comprises a casing containing inlet and outlet valves, a diaphragm to control the inlet-valves,

and another diaphragm controlling the electrical apparatus having a double contact to operate different signals when the gas is on or off.

A indicates the inlet to the casing V from the supply-main, and B the outlet to servicepipes. lVithin the casing is an inlet-valve Z, the stem of which is secured to a diaphragm A, clamped to the bottom of the casing by a cap B. The pressure required to close the valve adjusted and regulated by means of a spring D and adjusting-screw C, which is tapped into the cap B. As the pressure in creases the diaphragm A is forced down against the tension of the spring, and the opening of the valve Zdecreases accordingly, thereby regulating the supply and the pressure.

The outlet Bis controlled by a valve Q, which works through a gland in the top of the easing and is connected by its stem I to a lever O, pivoted to a standard X on top of the easing and having at one end a handle O and at the other end a spring R in tension tending to pull down that end of the lever and close the valve Q.

M is an armature pivoted to the bracket M and having at the upper end a hook arranged to engage a hook N on the under side of the lever O.

L is an electromagnet supported on the bracket and controlling the armature. By means of a four-pole switch IV this magnet may be put in circuit with a gas-off bellT.

S is a gas-on bell in circuit with two poles of the switch and the batteryU and the contact K by means of the wire .9, the other circuit being through the contact J and wire tto the other bell and the battery. These contacts J and K are located on opposite sides of a lever H, which is pivoted to the standard X and carries a pin which rests upon a diaphragm E, clamped between the cap I and the casing V. The pin Gr works loosely through a hole in the cap, and the diaphragm is under the pressure of the gas in the casing beyond the inlet-valve Z.

By changing the switch W the circuits may be established either with the bell S or the bell T. In the drawing, J is shown in circuit with the gas-otf bell T, ready to sound said bell if the gas-pressure should fail. In the event of such failure the diaphragm E and lever H drop, making the contact at J, which closes the circuit through the magnetL, which draws the armature and unhooks the lever 0, allowing the spring R to close the valve Q, which thus stays closed until opened by hand. At the same time the alarm T is sounded and continues to sound until some one comes and turns the switch to break the circuit. A quarter-turn of the switch cuts in the bell S, and the parts remain in this condition until the gas-pressure comes on again. Then the diaphragm E lifts and makes contact at K, which starts the bell S to ringing, notifying the people that the gas is on. Then the switch is turned back to connect the circuit of the bell T and the valve Q is opened by thelever O and hooked by the armature, as in the beginning.

l/Vhat we claim as new, and desire to secure by Letters Patent, is*

1. In a pressure-regulator, in combination, a casing having an inlet and an outlet, avalve at the inlet, and a separate cut-off valve at the outlet, and pressure-operated controlling means for each of said valves located in the casing between the valves and both subject to the same pressure.

2. In a gas cut-off, the combination with a casing havinga cut-elf valve, and a diaphragm therein controlling the valve, of means actuated by the diaphragm to sound a signal when the gas-flow fails, and means including a handoperated device and devices actuated by the diaphragm to also sound a signal when the gasfiow resumes.

3. In a pressure-regulator, in combination, a casing, separate inlet and cut-01f valves in the casing, diaphragms in the casing, subject to the pressure between the valves, one diaphragm being connected to and controlling the inlet-valve, and means for controlling the cutofi? valve connected to and actuated by the other diaphragm.

4. In a gas cut-ofl, the combination with a casing havingadiaphragm and a cut-off valve therein, ofa lever connected to the diaphragm, separate bells having separate circuits with contacts on opposite sides of said lever, a latch constructed to hold the valve open, and electromechanical means operated by the lever to release the latch and sound one of the bells when the pressure falls, and means including devices operated by said lever to sound the other bell when the pressure resumes.

5. In agas cut-01f and signal, the combination With a cut-off valve, and gas-off and gas-on bells having separate circuits and contacts in each, of a switch in the circuits, constructed to respectively open and close the same, electromechanical means in the circuit of the gas-off bell to close the cut-ofi' valve, and pressure-actuated means to close the respective contacts when the gas-pressure fails and resumes.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN W. COTTINGHAM. CHARLES IN. FRANKLIN. Witnesses:

A. A. SLAYBAUGH, IV. A. BELL.

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