US993164A - Combined gas regulator and cut-off. - Google Patents

Description

J. J. HEITZ. COMBINED GAS REGULATOR AND CUT-OFF. APPLICATION FILED we. a, 1910.

993, 1 64. Patented May 23, 1911.

3 SHEETS-SHEET 1- I :2 I I v TOR WWW J. J. HEITZ.

COMBINED GAS REGULATOR AND GUT-OFF.

APPLIOATIOIN rum) AUG. 8, 1910.

Patented May 23, 1911.

3 SHEETS-SHEET 2.

FIRE.

a7 as c o 11 C o 19 o C 12 INVENTOR J. J. HBITZ. COMBINED GAS REGULATOR AND GUT-OFF.

APPLICATION FILED AUG.8,1910. 993,164, Patented May 23,1911.

3 BHEETB-SEEET 3.

WITNESSES. VENTOR gflwaaw y. H. Mg W Lu my JOHN J. HEITZ, OF PITTSBURG, PENNSYLVANIA.

COMBINED G AS REGULATOR AND CUT-OFF.

Specification 0! Letters I'atent.

Patented May 23, 1911.

Application flied August 8, 1910. Serial No. 578,206.

To all whom it may concern:

Be it known that I, JOHN J. HEITZ residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Combined Gas Regulal'tors and Cut-Offs, of which improvement the following is a specification.

' The invention described herein relates to certain improvements in gas regulators and cut-ofl's, and is hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification, Figure 1 is a side elevation of my improved re lator and cutoff; Fi 2 is a sectional eevation of the same; ig. 3 isa sectional view on a plane indicated by the line III-III Fig. 1, Fig. 4 is a sectional view indicated by the line IV-IV Fig. 3; Figs. 5 and 6 are face views of the main valve and its seat respectively.

In the practice of my invention, I employ a shell or casing 1 which is divided into receiving and outlet chambers a and b by a partition 2. Through one head as 3 of this shell areformed ports 4 and 5 connected respectively with the chambers a and b. The outer face of this head 3 serves as a seat or face for a disk valve 6 which is provided with curved passages 0 adapted in certain positions of the valve to connect the ports 4 with the ports 5 permittin the flow of gas from the receiving to the out et chamber. This disk valve is held to seat by a sprin 7 interposed between the valve and an a justable abutment 8 arranged in the cover 9. This cover which is secured to a flange 10 on the shell 1 is connected so as to provide sufficient space for the free movements of the arms 11 and 12 pro'ecting radially from the valve. It is pre erred that the screw for adjustin the tension of spring 7 should be protecte by a cap 13 removablyzattached to the cover. The head 14 of the shell 1 is also rovided with ports 15 and 16 connected to t e chambers a and b and adapted to be connected one to the other b a curved passage d in the disk valve 17. his valve which is held to its seat in the head 14 by a spring 18 is provided with a stem 19 projecting out through a stufiing box 20 in the cap 21 secured to the shell 1 and inclosing the valve 17. The valve 17 is normally held in closed position by a spring 22 the movement of the handle being limited by the stop 23.

The cover 19 is provided with a hollow neck '24 which is attached to a nip le 25 on the lower section 26 of the diapli shell as shown in Fi 2. A rod 27 which is attached to the 1a hra m 28 I extends through the nip le an use and is connected to the radia arm 12 of the valve 6 so that the diaphragm may shift the valve as the former is affected by pressure of gas in the chamber formed by the diaphragm and the upper section 29 between which and the section 26 the edges of the diaphragm are clamped. connected to one end of a spring 30 having its opposite end connected to a swivel block 31 on the end of the adjusting screw 32 as shown in Fig. 2. This spring is arranged to shift the valve 6 and diaphragm in opposition to gas pressure above the dlaphragm. An adjustables ring cushion 33 is arranged in the path o movement of a part or element movable by the diaphragm and is designed to reinforce under certain conditions, the action of the spring 30.

The chamber a is connected to the supply pipe 34 and the chamber 6 the house service ine 35 from which extends a branch pipe 36 to the chamber above the diaphragm so that the latter is subjected only to house service pressure. The working pressure is determined by the spring 30 which when there is no pressure above the diaphragm will shift the valve 6 to closed position. In order to start the regulator the valve 17 is shifted by hand to permit a flow of gas from the chamber a to the chamber b and thence to the chamber above the diaphragm. As soon as the diaphragm is moved to open the valve 6, the handle of the valve 17 is released to permit the spring 22 to close the by-pass valve 17. a

In order to .prevent the valve 6 being shifted on a sudden increase of pressure sufiiciently far to close the ports 4 and 5 the 5 ring cushion is so adjusted as to present its resistance to such excess of movement.

In order to facilitate the adjustment of the regulator a pressure indicator is pro vided. This consists of a rod 37 having its lower end connected by a flexible joint 38 to the diaphragm and extending us into a glasstube 39 aving its upper en closed ragm The arm 11 of'the valve 6 is in any suitable manner and its lower end extending through a stufiing box 40 into a nipple'on the section 29 of the diaphragm shell. The tube is protected by posts 40 formed integral with the section 29 and these posts are provided with a pressure indicating scale along which a finger on the rod 37 moves as the diaphragm is shifted.

I' claim herein as my invention 1. A combined gas regulator and cut-off having in-combination a case or shell having receiving and outlet chambers and having a head provided with ports connected respectively with said chambers, a valve rotatably seated on the 'head and provided with a passage adapted to connect such ports, a cover inclosing the valve secured to the case or shell and provided with means for holding the valve to its seat, a diaphragm for rotating said Valve and a spring acting in opposition to diaphragm when shifted by pressure of gas and connected to the valve.

2. A combined gas regulator and cut-ofi' having in combination a case or shell having receiving and outlet chambers and having a head provided with ports connecting respectively with said chambers a valve rotatably seated on the head and provided with a passage adapted to connect said ports, a diaphragm for rotating said valve, a spring connected to the valve and acting in opposition to the diaphragm when shifted by pressure of gas and a spring arranged to reinforce the first spring.

3. A combined gas regulator and cut-01f having in combination a case or shell having receiving and outlet chambers and having heads provided with ports connecting respectively with said chambers, valves rotatably seated on said heads and provided with passages adapted in certain positions to connect the ports in'heads one of said Valves being normally closed, a diaphragm and a spring connected to the other valve and arranged to act in opposition one to the other in shifting said Valve.

In testimony whereof, I have hereunto se my hand.

JOHN J. HEITZ. Witnesses:

G. G. TRILL HAROLD G. domes.

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