US566445A - John s - Google Patents

Description

1 J. S. CONNBLLY. GAS LIGHTING 0R EXTINGUISHING APFARATUS.

(No Model.)

Patented Aug. 25, 1896.

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JOHN S. OONNELLY, OF TITUSVILLE, PENNSYLVANIA, ASSIGNOR TO THE OONNELLY-CRITOHLOW COMPANY, OF SAME PLACE.

GAS LIGHTING OR EXTINGUISHING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 566,445, dated August 25, 18196. Application tiled February 3, 1896. Serial No. 577,803. (N0 model.)

To all whom t may concern,.-

Be it known that 1, JOHN S. CoNNnLLY, of

Titusville, in the county of Crawford and` State of Pennsylvania, have invented a new and useful Improvement in Gas Lighting or Extinguishing Apparatus, of which the following is a full, clear, and exact description,

reference being had to the accompanying drawings, forming part of this specication, in which- Figure 1 shows in side elevation a streetlamp to which my improved apparatus is applied. Fig. 2 shows in vertical section and on a larger scale the construction of the apparatus.

The object of my invention is to provide means for lighting and extinguishing gasburners from a central point, e. g. at the central gas-works of a city. It is especially designed for use in connection with street-lamps, and when so applied it enables all the lamps of a city which are equipped with my invention to be lighted in the evening and put out in the morning without need for a workman to go the round of the lamps, as has heretofore been the custom. The invention is applicable, however, not only to use with street-lamps, but in connection with any other burners where the lighting and extinguishing of the ilaem from a distant point is desirable,and although I illustrate the invention as applied to burners of the well-known Welsbach type it may be used in connection with burners of any other construction.

The principle of operation of my improved device is that in connection with the main gas-burner I use a supplemental constantlylighted gas supply or jet, (which may be separate from but adjacent to the main jet or may lead into the burner proper,) and I control the main supply of gas to the burner by means of a valve controlled by an automatic cutoff, operated by the pressure of the gas in the supply-pipe, and so constructed that when subjected to the greater pressure commonly employed in city mains at night the valve will open and admit gas to the burner, but when the pressure is reduced, as is the custom during the daytime, the valve will close, so as to cut oft the supply of gas to the burner, permitting, however, its iiow to the supplemental jet, which remains constantly burning.

In the drawings, 2 represents a gas-supply pipe, which in the case of street-lights is frequently inclosed in a hollow post. line of this pipe, preferably at the top of the post, I place the case 3 of a cut-out device, having a chamber 4, communicating directly with the pipe 2, a chamber 5 being connected v therewith by a port 6, and having a valve 7,

which controls said port and which is connected to a cupiioat 8, situate in a chamber 9, its lower edge being immersed in mercury contained in a circular groove 10.

B is an air-vent in the chamber 9 above the diaphragm to permit free motion of the latter. A passage or pipe 11 leads from the chamber 4: to the chamber below the cuploat, a passage 12 leads from the chamber 5 in the wall of the case 3 to the burner-supply passage 13, and a by-pass 14 leads from the pipe 2 or chamber lin the wall of said case to the passage 13. A screw-plug or valve 15 in the by-pass enables the size of its opening to be regulated, so as to permit the passage of any desired volume of gas.

The operation is as follows The passage 11, connecting the chambers 4. and S, makes the gas-pressure on the under side of the float always equal to the pressure in the supplypipe 2. The float is weighted so that the day pressure of gas shall be insuflicient to raise it and to unseat the valve, but so that the increase of pressure in the pipe at night shall be sufficient to raise the float somewhat and to open the port 6. During the day hours the valve 7` is closed, but the gas from the pipe 2 passes through the by-pass 14 to the burner and burns there in a small jet, its size being adjusted once for all by proper setting of the screw orV valve 15. When the pressure in the main is raised to a degree sufficient to move the iioat, as will ordinarily happen at night and at a certain hour, the valve will be unseated and the gas will pass through the port 6 and passage 12 to the burner, causing the light to burn with its full brilliancy. This will continue until morning, when the pressure in the main is reduced, and then the dropping of the float will seat the valve, cut off the iiow of gas through the port 6, and

In the IOO lia

will permit only the small jet of gas from the by-pass to burn at the burner. The motion of the valve is very short and the device is so simple in its construction that it is not liable to get out of order and can be cheaply applied With great saving to gas-lighting plants.

By the construction above described I secure a device which can be made very cheaply in small and compact form and applied conveniently to ordinary street-lamps, duc., by interposing,` it directly in the line of the gaspipe, which, as shown in the drawings, enters the case at the bottom and passes therefrom to the burner at the top. Such compactness is due to the construction of the gas-passages 12 and 14 along,` or in the sides of the case and to the employment of a cup-iioat sealed by immersion in a body of mercury.

I claim- 1. The combination With a gas-burner and its gas-supply pipe, of a cut-off apparatus interposed in the pipe and comprising a case having a by-pass and a main burner-passage leading Within the case along its Walls, a valve controlling the main burner-passage, and an inverted cup-float contained Within the case and dipping Within a body of liquid, said iioat being connected With the valve, and the chamber on its under side communicating with the main burner-passage, whereby the valve Will be opened when the gas-pressure reaches a certain point of elevation and will be closed When the pressure is reduced.

2. The combination With a gas-burner and its gassupply pipe, of a cut-off apparatus interposed in the pipe and comprising a case .having a by-pass and a main burner-passage,

JOHN S. CONNELLY.

Titnesses z THOMAS W. BAKEWELL, G. I. HoLDsHIP.

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