US187042A - Improvement in gas-governors - Google Patents

Description

P. MUNZ INGER.

GAS-GOVERNOR.

Patentea. Feb. 6,1877.

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PETERS. PHDTO-LIITNOGRAPMER, WASHINGTON. D c.

sl AT s rupeeun zn'vcn'a, or PHI ADE PHIA,- PENNSYLVANIA, AssIcNoR TO MORRIS, TASKER- 8ioo.',' '(LIM1TED, ,oF SAME PLAGE' IMPRO E N N Specification forming part ofiLettersiPatent No. 187,042, dated February 6, 1877 application filed 7 d December 20, 18 7 6. I

To all whom it may concern:

Be it known that-I, PETER the city and county of Philadelphia, in the State of Pennsylvania, haveinvented a new and useful Improvement in Gas Governors or Regulators, of which I hereby declare the following to be a full, clear, and precise descrip tion,'and sufficient' to enable those skilled in the art to which my invention appertains to comprehend and construct, it. 7

My invention relates to that class of devices which are employed to govern and limit the flow of gas according to the elevation of the locality to be supplied to maintain an equable pressure, and to equalize the fiow of gas in the main notwithstanding varying pressures; is of especial applicability on the pipes connecting gas-holders with street gas-mains, but can be placed on any main or pipe where the pressure of gas is to be regulated and the actual flow controlled.

It consists in a device substantially hereinafter set forth for utilizing back pressures of gas to regulate and equalize automatically the flow of gas.

Of the drawings, Figure 1 is a perspective view of a governor embodying my invention; Fig.2, acentral sectional elevation of the same.

Similar letters of reference indicate corresponding parts wherever used.

A is a inlet-pipe leading from the gas-holder or other source of supply into a valve-chamher, B. A is the outlet-pipe,itself being or leading to a street-main or other discharging contrivance. G 0 are cone-valves, adjusted in seats D D in the closed end of the inletpipe. The valve-cham her being a compartment without aperture save in the outlet-pipe A, it is obvious that when the valves 0 are lifted the gas will flow out of the inlet-pipe into the valve-chamber, and thence escape by the outlet-pipe. The valve-cones (and their seats, if desired) are provided with circumferential corrugations c 0, adapted to contain gas, so as to form a gas cushion or packing for the valvecone with respect to its seat, to ease any frictional action and pack the valve when shut.

E is a cylindrical float-holder fitted on top of the valve-chamber, and divided inside into a central circular space, E, and a surrounding MUNZINGER, of

annular space, G, by means of thecylindrical diaphragm H, which is secured above to the cover-plate of the'float-holder, but-Lis open below to allowof a free circulation of the water with which the float-holder is partially filled, and on which the valve-float I rests. valve-float is preferablyconstructed of light sheet metal, made gas and air tight, and is provided with friction rollers i 6,, bearing against the diaphragm to ease its riseand fall. J is a float-stem, passing up through thetop of the holder, through a stuffingbox or other gas tight device. On its projecting upper extremity it bears a weight-cup, K, adapted to receive a series of counterbalancing weights. The float-stem also passes down below the float through a mercurial seal, Z, to prevent the water in the float-chamber flowing down into the valve-chamber; and, being concentric with their axes, is connected rigidly or jointedly, as shown, to the valves. Hence it follows that an elevation or depression of thefloat will be accompanied by a corresponding elevation or depression of the valves, and vice versa. The mercurial seal is of ordinary construction, and'fitted in any convenient inanner between the float-holder and valve-chamher, so as to prevent any escape of the water in the holderinto the valve-chamber. Lis the back pressure-pipe, springing from the outlet or main A, and communicating with the circular interior space F of the holder. M is a water-feed cup, by which to supply the holder with water, and N a water-gage to ascertain the level of the same within the holder. 0 is an air-cock communicating with the annular space G of the holder, and adapted to control the amount and tension of the air within said space above the water.

Such being the construction of my governor, its operation is as follows: The holder being supplied with water, the feed-cup cock m is closed, and the weight-cup K laden with a weight accurately calculated to be overcome by the given flow of gas into the inlet-pipe so as to permit the lifting of the valves, and'the consequent escape and flow of gas into the main A. Such is the operation under an equalized flow of gas. When, however, back pressures arise, tending to back up the gas This into the valve-chamber, inlet-pipe, and holder, it becomes essential to arrest the supply until the back pressure diminishes, which arrest is pressing the air in the same above the formerlevel of the water, the expansion of which air, when the back pressure of gas has dimin ished, aids in the ascent of the float and the reopening of the supply-valve by expelling the water from the surrounding into the central space of the holder, (whereby the floatto' which said valves are. connected is again Qraised,) until the former level is reached.

It will be readily understood that this whole action is proportionate, and that a slight back pressure will only partially close the supply-: valve while a strong pressure will, tighten them up absolutely. The tension of the compressed air is to be regulated by a regulation of the amount of air permitted to be in the annular space.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. As a device for'regulating by means of back pressures of gas the inlet-valves G O of a gas-regulator, to the total or proportional exclusion of inflowin g gas, a float. I, connected with said valves'and adapted to be acted upon and depressed by back pressure of gas, substantially as described,

2. In combination with the annular air-space G, the air-cockO, adapted to regulate the air within said space, substantially as described.

3. The float space F, in combination with the outlet or main A, by means of the back pressure-pipe L, asand for the purpose set forth. 1

4. The combination of the valves 0 O with the float I and weight-cup K, by means of the stem'J,as specified. r

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

' PETER MUNZINGER.

v Witnesses: r

- J BONSALL TAYLOR,

LISLE STOKES. v

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