US398021A - James bardsley - Google Patents

Description

J.BARDSLEY.

GAS REGULATOR.

(No Model.)

N0.-398,021. Patented Feb. 19, 1889 MENTOR.

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I NlTED STATES ATENT perfectly.

JAMES BARDSLEY, OF OLDIIAM, COUXTY OF LANCASTER, ENGLAND.

GAS-REGULATOR.

SPECIFICATION forming part of Letters Patent N 0. 398,021, dated February 19, 1889.

Application filed June 25, 1888. Serial No. 278,089. (No model.) Patented in England May 6, 1886, No. 6,184.

To coZZ whom it may concern.-

Be it known that 1, JAMES BARDSLEY, a subject of the Queen of Great Britain and Ireland, of the firm of Hargreaves & Bardsley, brass founders andfinishers, of the Union Brass Vorks, Oldham, county of Lancaster, England, have invented an Improvement in Gas-Regulators, (for which I, in conjunction with one Riley Hargreaves, obtained a patent in Great Britain, No. 6,134, dated May. 6, 1886,) of which the following is a specification.

My invention relates to the apparatus employed to promote uniformity of gas-pressure by reducing excessive pressure down to a fixed regulated maximum of pressure, as is well understood. In well-known forms of such apparatus bells or flanged disks are used, and it is to such regulators that my invention relates. In such regulators the rim of the bell dips into an annular trough partly filled with mercury, and the greater or less immersion of the said rim in the mercury causes a variation in the pressure, so that it is not possible to obtain a very delicate regulation. To obviate this defect a tumbling loaded lever has been used; but I do not find this to act I employ for the purpose lever which is mounted upon a fulcrum and is provided with an adjustable tubular arm which is loaded with fluid. This lever bears upon the bell or float of the regulator. IVhen the bell rises, the fluid moves in the lever, so as to shift the center of gravity nearer to the vertical line which passes, through the fulcru n1, thereby reducing the load upon the bell, a contrary effect being produced when the bell sinks. I construct the apparatus so that the valve-spindle can be withrawn and replaced without disconneeting the regulator from the gas-pipes.

My invention will be clearly understood when described with reference to the accompanying drawing.

The said drawing represents a vertical section taken through tluwenterof the improved regulator.

In the drawing, a is the coinpensitting-lever. b is thebell or float. c is the valve-spindle, and d d are the regulating-valves.

The gas is admitted at e and flows through the annular spaces between the "alves and the valvo-seatings ff to the outlet at g. Al'- ter the'gas has passed the valves it has access to the inside of the bell b, which floats in mercury which is contained in the annular trough h, the bell being more or less raised, according to the pressure of the gas, and as a consequence the passages in ff are more or less restricted.

The action of the regulator as so far described is not new. It will be seen that as the mercury has a greater specific gravityathan the bell the latter will have a greater buoyancy when in a low position than when in a higher position, and therefore that a slightly greater pressure is required inside the float to sustain it in a higher position as compared with alower. The result is that a higher press ure of gas when entering at e, or a reduced outflow at g, entails a higher pressure when leaving at g, although the office of the apparatus is to reduce the issuing gas to a constant pressure. The compensating-lever a is intended to reduce the variations in the pressure of the issuing gas as well as to determine the said pressure. The said lever consists of a bellcrank lever, a a which is loaded by means of the tube a, which contains mercury. This tube has an exterior screw-thread, whereby it is adjustably secured in a tapped hole in the vertical arm a of the lever. The horizontal arm a of the lever is provided with a small wheel, a which rests upon the nut Z) whereby the bell Z) is secured to the valve-spindle c. When the bell rises, owing to an increased pressure or decreased outflow of gas, the lever is tilted upon its fulcrum at '2 whereby the mercury in the tube a is caused to flow toward the fulcrum, thereby reducing the downward pressure upon the bell and compensatin g for the reduced displacement of mercury in the trough 72. On the contrary, when the bell sinks the mercury flows in a direction away from the fulcrum, and thus increases the load upon the bell and compensates for the increased submergence. It will be seen that the wheel a always bears downward upon the bell. The amount of this downward pressure, together with the floating weight of the bell and the dead weight of the spindles and valves d (1', determine the pressure of the issuing gas. The pressure can be reduced by rat us is being prepared for transit, the said screw bearii'lg' against the end of the tube CL and through the lever u forcing the bell downward, so that a valve, 7.', closes the openi mercury, in combination with the bell b, the

ing in I, and thereby prevents the mercury in II from passing down into the gas-passages The valve (1 is secured to the spindle by means of a pin.

\Vhen the nut 11 is unscrewed and 9 the two screw-pings m n are removed, the valve Access can then be had to I the seating f, which is UIISQTOWOd and re-" moved, the va]vt. -spindle then coming: out of its place.

3y a converse of these operations the parts are got into their positions.

What I claim as my invention is 1. As a means for adjustin the load upon the bell of a gas-regulator, the leveru, having in the horizontal arm a a wheel, a, resting upon the bell h, and a tubular chamber, ct, screwed into the vertical arm a and charged with mereur or :ftuid, the said part a being adjustable in the arm by turni ng' the said part in the direction for screwing or unscrewing, substantially as set forth.

2. In a gas-regulator, the i ever a a mounted upon a :t'ulcrum, i, provided with a wheel, a, and with an adjustable tube, 0, containing spindle c, the valves (Z d, and the valve-seatin gs f f, sul'istanti ally as set forth.

In testimony whereof I have signed my name to this s peeifieation in the presence of two subseriliiing' witnesses.

JAMES BARDS'LEY. *ttncsses:

DAVID FUUFON, Fnnnu. DILLON.

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