US873026A - Time-controlled gas-cock. - Google Patents

Description

No. 873,026. PATENTED DEC. 10, 1907. A. DAVIS.

TIME CONTROLLED GAS COCK.

APPLICATION FILED JUNE 4,1906.

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No. 873,026. PATENTED DEC. 10, 1907.

A. DAVIS.

TIME CONTROLLED GAS COCK.

APPLICATION TILED JUNE 4,1906.

2 SHEETS-SHEET 2.

THE NORRIS PETERS co" WASHINGTONfbX.

UNITED STATES PATENT OFFICE.

AUGUSTINE DAVIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO DAVIS AGETYLENE COMPANY, OF ELKHART, INDIANA, A CORPORATION OF SOUTH DAKOTA.

TIME-CONTROLLED GAS-COCK.

Specification of Letters Patent.

Patented Dec. 10, 1907'.

Application filed June 4' 1906. Serial No. 320.061.

To all whom it may concern:

Be it known that I, AUGUSTINE DAVIS, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Time-Controlled Gas- Cocks, of which the following is a specification.

My invention relates to gas-lighting apparatus and has particular reference to means for lighting and extinguishing gas lamps at predetermined times. I am aware that mechanisms for performing these functions have been. devised, but believe that they have been found inadequate because of their many parts and consequent liability to disorder, their high and irregular resistance to the spring because of their many frictional points, and particularly because of their high cost.

Therefore, the objects of my invention are, to provide a mechanism of the class described which shall be composed of few and simple parts and which shall be, consequently, of low cost; which shall operate with slight resistance to the spring-operated clock work 3 and which shall operate to ignite or extinguish the light instantaneously at the predetermined times.

\Vith these objects in view, my invention consists in the details of construction and combinations of parts, all as hereinafter described and particularly pointed out in the claims.

My invention will be more readily understood by reference to the accompanying drawings, forming a part of this specification, and in which Figure 1 is a front elevation of a timing mechanism embodying my invention, a portion of the gas-supply pipe being broken away Fig. 2 is a plan view thereof; Fig. 3 is a side elevation; and Fig. 4 is a detail view of the upper pinion and the operating weight, the same being taken from Fig. 3 and viewed in the direction of the arrows.

Inasmuch as my device is intended to be applied in connection with a mechanism of the ordinary clock variety and as such construction is well known, I have deemed it unnecessary to show the same in detail herein.

Referring now more particularly to the drawings, 5, is a casing containing an ordinary eight-day clock movement (not shown).

Projecting from the casing are studs, 6-7,

carrying pinions, 89, one of which (9) is secured to the shaft 7 which carries the hour-hand of the clock move1nentor a shaft corresponding thereto. The pinion, S, is an idler, meshing with the pinion, 9. These pinions are provided near their peripheries with apertures, 89, preferably twelve in each pinion, which may be marked corresponding to the llOLllS of the day if desired. For each pinion I provide a pin, 1011, adapted to be set within any of the apertures in the pinion, for a purpose hereinafter explained.

12 is a gas-supply pipe, provided with a valve, 13, and a burner tip, 1 1. This valve is of the ordinary type having a by-pass therein (not shown), in order that when the main valve is closed the by-pass will be opened to allow a small quantity of gas to be supplied to the pilot burner, 14, in burner,

14. The valve-stem, 15, has a long shank,

and in place of the usual key is provided with projecting wings, 1515 near the extremi ties of which, and at right angles thereto 1 form studs, 1515, for a purpose later explained. Stops, 13, are provided at the desired location, to limit the rocking movement of the wings, 15*15 The stem, 15, also has loosely mounted upon its long shank and confined thereon by set screw, 15 a reciprocating weight-arm, 16, and a geared pinion, 17. The weight lever, 16, is secured in a collar 16 having peripheral ears or projections, ].6 -16, adapted to engage studs, 15"15, on the wings, 15-15 The collar, 16 is also provided on one face with a stud, 16,.adapted to traverse an arc-shaped slot, 17, in the pinion, 17. (See Fig. 4). Pivoted upon a stud, 18, projecting from the clock casing, 5, is an arm, 19, carrying a segmental gear, 19, which arm, 19, is adapted to reciprocate between the adjusta le pins, 1011, upon pinions, S 9. This segmental gear, 19*, meshes with the loosely mounted pinion, 17, upon the valve stem, 15, and rotates the same in a manner and for the purpose which will be now explained.

The operation of my device is as follows: The periods during which the gas-light is to burn having been ascertained, the pins, 10-11, are adjusted and gas supplied to the pipe, 12. The figures of the drawings show the device in closed position; i. 6., with the main valve closed and the by-pass to the pilot light open, and it will be thus described.

The clock mechanism being then set inmotion, the pinions, 89-, will rotate in the direction shown by the arrows, and, in due course, the pin, 11, in pinion, 9, will contact the arm of the segmental gear, 19, raising the same toward a vertical position and consequently rotating the pinion, 17, with which it meshes. This rotation of the pinion, 17, also elevates the weight-arm, 16, its projection, 16, being then in contact with the right-hand extremity of the arc-shaped slot, 17. However, no motion has as yet been transferred to the valve stem, 15, the parts mentioned being loosely mounted thereon. As the operation proceeds and the segment, 19, further elevates the weight, 16, until it reaches a substantially vertical position, .a slight further advance will throw the weight past its center of gravity and it will fall toward the left, the slot, 17, permitting a degr'ee of movement sufficient to cause the projecting ear, 16 on collar, 16, to contact forcibly the projecting stud, 15 on wing, 15*, and rotate the valve stem, 15, to open the valve to the main burner. The gas thus released instantly ignites from the pilot burner. The clock movement continues in operation, the pinions, 8 9, rotating until the pin, 10, set at the predetermined position in pinion, 8, contacts the arm, 19, of the reciprocating segment, 19, throwing it backward and reversing the previous operation, to close the main burner valve.

It will be observed that the pinions, 89,

being of the same diameter will have the same peripheral speed and therefore that they may be adjusted to any desired lighting or extinguishing time simply by the setting of the pins, 1011.

Various modifications will readily suggest themselves to one skilled in the art, and therefore Ido not confine the invention to the specific construction herein shown and described. I

I claim:

1. In a device of the class described, the combination with the hour-hand shaft of a clock movement, and a gas burner provided with main and pilot light tips, of a valve controlling the flow of gas to said main and pilot light tips, a counterweighted arm loosely mounted on the stem of said valve, cooperating tappets on said valve-stem and arm, respectively, and mechanism actuated by said hour-hand shaft of the' clock movement adapted toiraise and tilt said arm over its in termediate vertical position alternately from both sides of the vertical position to ignite and extinguish the main light, substantially as described.

2. In a device of the class described, the combination with the hour-hand shaft of a clock movement, and a gas burner provided with main and pilot light tips, of a valve- 3. In a device of the class described, the

combination with the hour-hand shaft of a clock movement, and a gas burner provided with main and pilot light tips, of a valve controlling the flow of gas to said main and pilot light tips, a counterweighted arm loosely mounted on the stem of said valve, cooperating tappets on said valve-stem and arm, respectively, a pinion loosely mounted on said valve-stem and having a pin and slot connection with said arm, a pivoted segmental rack engaging said pinion, and adjustable means actuated by said hour-hand of the clock movement for oscillating said rack, substantially as described.

4, In a device of the class described, the combination with the hour-hand shaft of a clock-movement and a gas burner provided with main and pilot light tips, of a valve controlling the flow of gas to said main and pilot light tips, a counterweighted arm loosely mounted on the stem of said valve, cooperating tappets on said valve-stem and arm, respectively, a pinion loosely mounted on said valvestem and having a pin and slot connection with said arm, a segmental rack engaging said pinion, a pivoted arm carrying said rack, a pair of intergeared pinions actuated by the hour hand shaft of the clockmove ment and. each provided with apertures spaced around its circumference, and pins insertible in said apertures and adapted to engage and oscillate said raclccarrying arm at predetermined times determined by the relative positions of said pins in their respective pinions, substantially as described.

5. In a device of the class described, the combination with a burner-valve, of timecontrolled means for opening and closing the same consisting of the hour-hand shaft of a clock movement, a pair of intergeared pinions actuated thereby and each provided with apertures spaced around its circumference, pins insertible in said apertures, a pivoted arm adapted to be oscillated through engagement by said pins, and actuating connections between said pivoted arm and said burnervalve, substantially as described.

AUGUSTINE DAVIS.

Witnesses:

SAMUEL N. POND, L. F. McCREA.

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