US1271420A - Carbid feed for acetylene generators. - Google Patents

Description

J. 0. BEWAN.

CARBID FEED FOR ACETYLENE GENERATORS.

APPLICATION FILED NOV. I1. I91). 1 ,27 1,420. Patented July 2, 1918.

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J. 0. BEWAN.

CARB ID FEED FOR ACETYLENE GENERATORS. APPLICATION FILED NOV 12. I912.

1 ,27 1,420. Patented July 2, 1918.

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JAMES O. BEWAN, 0F ONLEY, VIRGINIA.

GARBID-FEED FOR ACETYLENE-GENERATORS.

Specification 01' Letters Patent.

Patented July 2, 1918.

Application filed November 17, 1917. Serial No. 202,493.

To all whom it may concern:

Be it known that I, JAMES O. BEWAN, a citizen of the United States, residin at Onley, in the county of Accomac and tate of Virginia, have invented certain new and useful Improvements in Carbid-Feeds for Acetylene-Generators, of which the follow ing is a specification.

This invention relates to an acetylene gas generator and especially to that portion of the apparatus relating to the method of feeding the carbid.

The invention consists in the novel features of construction hereinafter described, pointed out in the claims and shown in the accompanying drawings, in which Figure 1 is a vertical section.

Fig. 2 is an enlarged detail section view of a supplemental carbid holder.

Fig. 3 is a section on the line 33 of Fig. 1.

IJFig. 4 is a section on the line 4-4 of %n the drawings 1 designates the outer casing or can. This is designed to be partially sunk in the ground, embedded n cement, or otherwise protected against freezing where weather conditions make this necessary.

It is provided with a removable cover 2. Vithin the casing and concentric therewith is a cylinder 3, which terminates short of the top and bottom of the casing.

An annular plate 5 connects the casing, the bottom edge of the cylinder 3 and a second interior cylinder 4, and is supported by braces 6. The lower edge of the cylinder 4 is flush with that of the cylinder 3, but it terminates far short of the top of cylinder 3.

The plate 5 forms a bottom for a compartment 7, the walls of which are formed by the casing 1 and cylinder 3 and the lower portion of this compartment is filled with water and forms the gas receiving chamber.

The space between the cylinders 3 and 4 forms a water-seal compartment 8.

Within the cylinder 3 partially inclosing the cylinder 4 and dipping into the water seal is a hell 9. This has an air vent valve 10 and handles 11. In the upper portion of the compartment 7 is an annular filter 12 having perforated bottom and provided with handholds 13. From one side of the filtering device leads a service supply p pe 14.

A pump 15 is provided with outlet pipe 16 for pumping out the water from the easing 1.

A gear wheel, which may be segmental to allow for rocking movement only, 17 is mounted in the lower portion of the casing and carries agitator blades 18. It is operated through a pinion 19, shaft 20, inclosed in ipe 21, and hinged handle 22.

ms generated in the casing rises through pipes 23, on which inverted branches 24 are mounted and escapes through suitable slots in the branches into the water in compartment 7.

The above in brief is an explanation of the generator with which my carbid feed is used. These various features can be modified without in any way changing the essential features of the invention.

Openings 25 are provided in the wall 3 so that the water will stand at the same level in the sealing compartment as in compartment 7 Rollers 26 carried by the bell travel on the wall of the cylinder 3 and serve to guide it.

A tube 27 carries a float 28 and signal or index device 29. When the signal 29 projects from the upper end of the tube 27 sufficient water has been supplied to the generator.

Lugs 30 carried by the cylinder 4 support within said cylinder a carbid hopper 31 having an inverted conical bottom centrally open. Arranged centrally in the hopper is a downwardly and upwardly open cylinder 32. Tubes 33 extend vertically through the hopper on opposite sides of the cylinder 32. These tubes are connected with the exterior hopper walls by braces 34. They are also provided with inclined collars 35. The cylinder 32 carries exterior inclined flanges 36. slotted to fit over the tubes 33, and resting on said collars, there being upper and lower collars and flanges.

Bars 37 having rack portions 38 work through the tubes. A housing in the form of a cone 39 is carried by the lower end portions of the tubes, and within and supported from the cone are gears 40, meshing with the racks bars, respectively. Extending upwardly from the cone is a sleeve 41 and working in the sleeve is a valve stem 42 the lower portion of which is in the form of a double rack bar, working between and meshing with the gears 40. A cylindrical valve 43 is supported by the stem 42 and has a lower bell-shaped portion, preferably of rubber which normally rests on and closes the discharge opening of the hopper 31. Suitable guide pins 43 are carried by the cylinder 32 to guide valve 13.

It will be obvious from the above that if the pressure decreases the bell will descend and strike the bars 37 and the weight of the bell will move said barsdownwardly rotating gears 40 and moving the valve stem 42 upwardly. This will lift the valve and allow an additional supply of carbid to drop into the generator.

On rise of the bell the weight of the valve 43 will force the stem 42 downwardly, there by lifting the bars 37, and also closing the hopper bottom discharge opening.

After the supply of carbid in the hopper 31 is exhausted the lights will gradually dim, and if no new supply is provided they will finally go out. As this would in most cases occur at night I provided a sup pleniental hopper which is automatically brought into operation and provides a suiticient supply to last until opportunity has been given to fill the main hopper 31 by daylight.

This consists of an inverted cone to placed in the upper portion of the cylinder 32 and also having a central discharge opening. It has a valve i6 carrying a depending tube 47. The valve is protected from clogging with carbid by a housing in the form of a cone 48 supported within the hopper 45 by braces 50, and this cone carries a guide rod 49 for the valve 46, said rod working in the tube 47.

It will be obvious that under ordinary circuinstances the valve 46 will remain closed but if the bell drops sulliciently to lift the valve 43 high enou h to contact with the tube 17, which it wil do only when the supply of carbid in the hopper 31 is practically exhausted, valve 46 will lift and carbid will be fed from the auxiliary hopper &5 until that supply has been exhausted.

The operation of valve 46 will be preceded by a. temporary dimming of the lights thereby giving warning that the supply of carbid in the main hopper is exhausted.

What I claim is l. The combination with a carbid hopper having an inner cylinder stopping short of the hopper bottom, said hopper having a central bottom opening, of a valve working in said cylinder and adapted to close said opening, a bell working over the hopper, gears arranged beneath the hopper, a valve stem having a rack portion working between said gears, and rack bars in engagement with the gears, and in position to be engaged by and actuated by the descent of the bell.

In a carbid feed for acetylene generators, a bell, a hopper partially inclosed by the bell, a cylinder arranged centrally in the hopper, the hopper opening below said cylinder, tubes passing through the hopper on opposite sides of the cylinder, rack bars in the tubes, a cone carried by said tubes and below the hopper, gears in mesh with said bars, respectively and housed in said cone, a valve working in the cylinder and normally closing the hopper bottom, and a valve stem having a double rack portion, said stem working between and being in mesh with said gears.

3. In a carbid feed, a main hopper, a ver tically movable valve controlling discharge of carbid therefrom, a rack valve stem, gears engaging said stem, rack bars in mesh with said gears and adapted to be engaged by a. descending bell, a supplemental hopper, and a valve controlling discharge of carbid from the supplemental hopper, said valve being actuated by rise of the first mentioned valve beyond a predetermined height.

4. In a device of the kind described, a bell, a main hopper partially inclosed by the bell, a supplemental hopper arranged within the main hopper, a valve for each hopper, a rack and gear device actuated by the bell for lifting the valve of the main hopper, and a depending stem carried by the valve of the supplemental hopper and adapted to be engaged by the valve of the main hopper when said valve has lifted to a predetermined height, as and for the purpose set forth.

In testimony whereof I aflix my signature.

JAMES O. BEWVAN.

Capien of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ,D. O.

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