US638251A

US638251A - Pressure-regulator.

Info

Publication number: US638251A
Authority: US
Inventors: Arthur Kleinfeldt
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-03-06
Filing date: 1899-03-06
Publication date: 1899-12-05
Anticipated expiration: 1916-12-05

Description

No. 63815:. Patented pad. 5, I899.

A. KLEINFELDT. PRESSURE REGULATOR. I

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ARTHUR KLEINFELDT, OF NEW YORK, N. Y.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 638,251, dated December 5, 1899.

Application filed March 6, 1899. Serial No. 707,844. (No model.)

such as are commonly employed in the han dling of liquefied carbonic-acid gas.

One object of the invention is to produce a valve of this general character, although not of necessity limited to the particular use referred to, in which a pressure indicator or gage and the pressure-regulatin g valve shall both be operated from or by a single diaphragm, thereby producing an instrument which shall combine the functions of two separate instruments and shall cost less to manufacture than the two separate instruments.

Another object is to provide such a yielding connection between the diaphragm and the controlling or regulating valve that the formershallbe capable ofcontinuingitsmovement after the valve has reached its seat, whereby any increase of pressure due to leakage will be indicated. Improved means are also provided for effecting adjustment of the valve, and the construction and arrangement of the parts are such that theliability of valves or regulating devices of this character to be rendered useless by freezing under the intense cold developed by the rapid expansion of the compressed gas is reduced to a minimum. A,

combined safety-valve and blow-off cock is added to the structure to cooperate with the regulatin g and indicating devices and prevent injury thereto by excessive pressure.

The several features of improvement are illustrated in a convenient and desirable form in the accompanying drawing, which represents the improved indicating and regulating device in vertical central section.

The main body A, to which the other parts are secured, is recessed, as at a, to form with the diaphragm B a chamber within which the pressure of the gas is exerted against the diaphragm, the position of the latter and of the parts connected therewith changing with variations in the pressure. Gas is admitted to the chamber through a central port a',throu'gh which also passes the valve-stem, as hereinafter described, and an outlet from the chamber is provided at 0.

Thediaphragm B is clamped upon the body A in the usual manner by a cap 0 and screws 0, the cap also affording bearing for a portion of the transmission mechanism (indicated by the rack b) secured to the diaphragm, pinion b,and bevel gears b bibetween the diaphragm and' the indicator D, the bevel-gear 12 being shown as secured to the shaft of the indicator. The precise character of the transmission devices is obviously immaterial, and any ordinary form of such devices may be adopted in place of that-shown.

The valve E is arranged to close the mouth of the port or passage a and is inclosed within a chamber f of comparatively restricted capacity, formed within a connection-piece F, which is secured by bolts or screws f to the body A and has an inlet for the gas. The valve is preferably mounted adjustably upon its screw-threaded stem 6, so as to be capable of adjustment toward or from its seat by rotation upon the stem. The latter is not connected rigidly to the diaphragm B, as is usual in devices of this general character, but is yieldingly connected thereto, so that the diaphragm shall be capable of movement after the valve has reached its seat in order that it may yield to an increase of pressure occasioned by aleak or otherwise and cause the indicator to respond to such increase of pressure. For this purpose the connection between the diaphragm B and the valve-stem e is effected by means of a spring, such as that shown at c, which permits the diaphragm to move away from the end of the valve-stem when the valve has reached its seat. The spring may be secured to the diaphragm in any suitable manner, as by means of the screw b For the purpose of effecting adjustment of the valve without requiring the casing of the regulator to be opened, the outer face of the valve is formed with a squared or other angular opening c to be engaged by a similarly-shaped pin or shank g, formed on the end of a spindle G, which is mounted -to rotate gas-tight in a suitable bearing in the wall of the connection-piece F in line with the valve and valve-stem. A flange g may be formed on the spindle and be held snugly against its seat on the wall of the connectionpiece by a spring g interposed between the outer face of the connection-piece and the hand-wheel g on the spindle, thus dispensing with a stuffing-box and making the adjustment of the parts easy. The length of the pin or shank g and of the hole 6 is such that the necessary longitudinal movement of the valve with respect to the shank or pin is possible without disengagement of the valve from the spindle. It is obvious that the shank or pin might equally well be formed on the valve to engage a corresponding hole on the spindle. In connection with the gasoutlet (1 is a combined safety valve and blow-off cock, comprising a cap H, secured over a port a a plunger-valve h, normally held to its seat over the port a by a spring h, and a lever h mounted on the cap and engaging the stem of the valve. An outlet from the cap is provided at 77, Adjustment of the valve is effected by means of the screwthreaded engagement of the cap II with the boss, in which the port a is formed, the spring h being compressed more or less by adjustment of the cap. It is obvious that the valve h will lift at the pressure determined by the tension of the spring h, thereby relieving the pressure in the chamber a and preventing injury to the diaphragm or the indicator, and that by means of the lever h the valve it can be lifted whenever it is desired to blow off.

As already stated, the chamberfis of restricted capacity as compared with the chamber a, so that in handling liquefied carbonicacid gas, for example, there can be no such excessive expansion within the chamber F in which the valve E is located as to cause a freezing up of the valve. Furthermore, as the pressure is reduced as the gas passes the valve the cold occasioned by expansion within the chamber a is not sufficient to produce frost therein.

It will be understood that the invention is not to be limited to the precise construction and arrangement of parts shown and described herein.

I claim as my invention-- 1'. In a combined pressure regulator and indicatorthe combination with a gas-chamber and a diaphragm subject to the pressure of gas therein, of an indicator mechanically connected to one side of said diaphragm, and a valve to control the admission of gas to said chamber mechanically connected to the other side of said diaphragm, whereby the pressure of gas in said chamber controls both the in dicator and the valve substantially as shown and described.

2. In a pressure-regulator, the combination with a gas-chamber and a diaphragm subject to the pressure of gas therein, of a valve to control the admission of gas to said chamber, and a yielding connection between said valve and said diaphragm, whereby the valve is moved with the diaphragm in both directions but the diaphragm is permitted to continue its movement away from the valve after the latter has reached its seat, substantially as shown and described.

3. In a pressure-regulator, the combination with a gas-chamber and a diaphragm subject to the pressure of gas therein, of a valve to control the admission of gas to said chamber, and a spring connecting said diaphragm to said valve whereby the valve is moved with the diaphragm in both directions but the diaphragm may continue its movement away from the valve after the latter has reached its seat, substantially as shown and described.

4. The combination with a gas-chamber and a diaphragm subject to the pressure of gas therein, of an indicator connected to one side of said diaphragm, a valve to control the admission of gas to said chamber, and a yielding connection between said valve and said diaphragm, substantially as shown and described.

5. In a pressure-regulator, the combination with a gaschamber and a diaphragm subject to the pressure of gas therein, of a threaded valve-stem connected to said diaphragm, a valve to control the admission of gas to said chamber and threaded upon said stem, and a rotatable spindle mounted in the wall of the regulator and engaging said valve to rotate the same while permittinglongitudinal movement of the valve with respect to the spindle, said spindle having a flange to bear against its seat on said wall, substantially as shown and described.

This specification signed and witnessed this 31st day of January, A. D. 1899.

' ARTHUR KLEINFELDT.

In presence of- A. N. JEsBERA, F. M. EGGLESTON.