US789277A - Automatic gas cut-off. - Google Patents

Automatic gas cut-off. Download PDF

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Publication number
US789277A
US789277A US1905243904A US789277A US 789277 A US789277 A US 789277A US 1905243904 A US1905243904 A US 1905243904A US 789277 A US789277 A US 789277A
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Prior art keywords
valve
lever
gas
casing
automatic gas
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Burns D Hempsted
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Individual
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Priority to US1905243904 priority Critical patent/US789277A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/06—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bellows; using diaphragms
    • F23N5/067—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bellows; using diaphragms using mechanical means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1407—Combustion failure responsive fuel safety cut-off for burners

Definitions

  • This invention relates to improvements in automatic gascutoff mechanism.
  • the object of the invention is to provide a device of this character whereby should a gas-light to which the same is applied be casually blown out the flow of gas to said burner will be automatically stopped.
  • a further object is to provide a cut-off mechanism which will be simple in construction, efiicient and reliable in operation, and well adapted to the purpose for which it is designed.
  • FIG. 1 is a side elevation of the device, showing the same applied to the burner of a gas-stove; and Fig. 2 is a vertical sectional view of the same 7
  • 1 denotes a valve-chamber, with which are connected a gas-inlet pipe 2 and an outletpipe 3.
  • a valve 4 which is adapted to engage a seat 5, formed in a partition 6, which is arranged between the gas inlet and outlet ports of the valve-casing.
  • the valve 4 is provided with a stem 7, which is slidably mounted in and projects through a gland8 in said valvecasing.
  • a coilspring 9 which bears against the valve 4 at one end and against an annular flange 10, formed in the valve-casing 1, as shown.
  • valve-stem 7 The outer end of the valve-stem 7 is pivotally connected to a lever 12, one end of which is pivotally mounted in a standard 13, secured to the valve-casing 1. Secured to the opposite side of the valve-casing is a bracket 14, in which is pivotally mounted a prop 15, with the upper end of which is adapted to be engaged the free end of the lever 12.
  • the prop 15 is of such length that when engaged by the lever 12 the valve 4 will be held out of engagement with the seat 5, thus allowing the passa e of gas through the valve-casing.
  • a thermostat-bar 16 which is adapted to be arranged in the flame of the as-burner and to be heated thereby.
  • a temporary support is provided for the lever 12.
  • Said support may be of any suitable construction, but is here shown as consisting of a block or bar 17, which is adapted to be placed upon the upper end of the valve-casing in position to support the free end of the lever 12, said block being of such thickness as to hold said lever and the valve connected thereto high enough to disen age the valve from its seat.
  • the bar or b ock 17 may, if desired, be connected by a chain or other flexible connection 18 to the valve-casing 1, which will prevent said block from becoming loose or mislaid.
  • the lever 12 In operation when it is desired to light the gas-burner the lever 12 is lifted and held up by the block 17 thus opening the valve 4 and permitting the gas to flow through the pipes 2 and 3 to the burner.
  • the thermostat-bar 16 being arranged in the flame of said burner will soon become heated, and consequently will expand, thus forcing the prop 15 beneath the end of said lever 12, after which the block 17 may be removed. Should the flame of the burner be extinguished from any cause after the parts have been arranged as de scribed herein, the thermostat-bar will cool and in cooling will contract, thereby drawing the prop 15 from beneath the lever 12, which will permit the spring 9 to force the valve 4 into engagement with its seat, thus cutting off the flow of gas to the burner and preventing further escape of the same.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)

Description

PATENTED MAY 9, 1905.
B. 1). HEMPSTED. AUTOMATIC GAS GUT-OFF.
APPLICATION FILED IEB.2, 1905.
v awvento'r- Eur/76,9172? &
Patented May 9, 1905.
PATENT OFFICE.
BURNS D. HEMPSTED, OF OROTON, OHIO.
AUTOMATIC GAS CUT-OFF.
SPECIFICATION forming part of Letters Patent N0. 789,277, dated May 9, 1905.
Application filed February 2, 1905. Serial No. 243,904.
To all whmn it nuty concern.-
Be it known that I, BURNS D. HEMPSTED, a citizen of the United States, residing at Oroton, in the county of Licking and State of Ohio, have invented certain new and useful Improvements in Automatic Gas Out-Offs; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to improvements in automatic gascutoff mechanism.
The object of the invention is to provide a device of this character whereby should a gas-light to which the same is applied be casually blown out the flow of gas to said burner will be automatically stopped.
A further object is to provide a cut-off mechanism which will be simple in construction, efiicient and reliable in operation, and well adapted to the purpose for which it is designed.
With these and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be hereinafter described and claimed.
In the accompanying drawings, Figure 1 is a side elevation of the device, showing the same applied to the burner of a gas-stove; and Fig. 2 is a vertical sectional view of the same 7 Referring more particularly to the drawings, 1 denotes a valve-chamber, with which are connected a gas-inlet pipe 2 and an outletpipe 3. Within the valve casing 1 is arranged a valve 4, which is adapted to engage a seat 5, formed in a partition 6, which is arranged between the gas inlet and outlet ports of the valve-casing. The valve 4 is provided with a stem 7, which is slidably mounted in and projects through a gland8 in said valvecasing. Around the valve-stem 7 is arranged a coilspring 9, which bears against the valve 4 at one end and against an annular flange 10, formed in the valve-casing 1, as shown.
The outer end of the valve-stem 7 is pivotally connected to a lever 12, one end of which is pivotally mounted in a standard 13, secured to the valve-casing 1. Secured to the opposite side of the valve-casing is a bracket 14, in which is pivotally mounted a prop 15, with the upper end of which is adapted to be engaged the free end of the lever 12. The prop 15 is of such length that when engaged by the lever 12 the valve 4 will be held out of engagement with the seat 5, thus allowing the passa e of gas through the valve-casing.
With the prop 15 is pivotally connected a thermostat-bar 16, which is adapted to be arranged in the flame of the as-burner and to be heated thereby. In order that the valve may be held out of engagement with the seat 5 to permit the passage of gas through the valve-casing while the thermostat-bar is being heated, a temporary support is provided for the lever 12. Said support may be of any suitable construction, but is here shown as consisting of a block or bar 17, which is adapted to be placed upon the upper end of the valve-casing in position to support the free end of the lever 12, said block being of such thickness as to hold said lever and the valve connected thereto high enough to disen age the valve from its seat. The bar or b ock 17 may, if desired, be connected by a chain or other flexible connection 18 to the valve-casing 1, which will prevent said block from becoming loose or mislaid.
In operation when it is desired to light the gas-burner the lever 12 is lifted and held up by the block 17 thus opening the valve 4 and permitting the gas to flow through the pipes 2 and 3 to the burner. The thermostat-bar 16 being arranged in the flame of said burner will soon become heated, and consequently will expand, thus forcing the prop 15 beneath the end of said lever 12, after which the block 17 may be removed. Should the flame of the burner be extinguished from any cause after the parts have been arranged as de scribed herein, the thermostat-bar will cool and in cooling will contract, thereby drawing the prop 15 from beneath the lever 12, which will permit the spring 9 to force the valve 4 into engagement with its seat, thus cutting off the flow of gas to the burner and preventing further escape of the same.
From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.
Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is
1. In a device of the character described, the combination with an automatically-closing valve, provided with a stem, of a lever connected to said stem and pivoted to a standard, a prop adapted to support said lever and hold said valve in an open position,
and a thermostat adapted to disengage said said valve 1n open position after the removal of said block, and a thermostat adapted to disengage said prop from said lever, thereby permitting said valve to close, substantially as described.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
BURNS D. HEMPSTED.
Witnesses:
H. G. KELLY, R. L. WOODWORTH.
US1905243904 1905-02-02 1905-02-02 Automatic gas cut-off. Expired - Lifetime US789277A (en)

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