US760595A

US760595A - Cut-off apparatus for gas or liquid supply pipes.

Info

Publication number: US760595A
Authority: US
Inventors: Frederick William A Wiesebrock
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-08-27
Filing date: 1903-08-27
Publication date: 1904-05-24
Anticipated expiration: 1921-05-24

Description

No'. 760,595. VPMBI'PTED YPzmr'zz, 1904,.

P. W. A. WIPSEBROGK.

GUT-GPP APPARATUS P0P GAS oR-LIQUID SUPPLY PIPE'S.

APPLICATION FILED AUG. 27, 19073.

Patented May 24, 19011.v

" v[lruTi'eDfi PATENTfOFIucE.

lF'sieDaeron'' WILLIAM QA. `:w1SEBROCK;` F jNEW/Y'OR'K-ia 4N- `YI i fICUT-QFF' APPARATUS FQB'GAS on L'IQUiD"s UiPLv` PIPVEQS.

sPEcIFIcArIoN forming paie of Letters Patent No.-7e0,5e5, dated May 24,-' 1904. 1

y, 'Appleman flied Augusta?, 1903. y serial No. 170,901.v 1N@ maar).

Toa/ZZ whom it 11e/,Ly concern,.- '1

Be it known that I, FREDERICKWILLiAiu vVVIESEIBROCK, a citizenof the United States, re-

siding at lNew York cit'y,-BronX, county' and State of New York, have invented certain newl and useful vImprovements in (Jut-oif Apparatus for Gas and Liquid Supply Pipes,` of which `the fol-lowing is a specification. s

This inventionlrelates to an improvedcutoff apparatusadapted to be ijttedv into apipeline that carriessteamgas, r liquid Aunder pressure. The apparatus is so constructed that the valve which controls the ilowyof 'the steam, &c., is slowly but positively closed in caseof'breakagelor leakage, so that sudden yjars are avoided.

,In the accompanying drawings,'Figure 1 is a vertical longitudinal section of my improved cut-oif apparatus'gand Fig. A2,''across-section, partly broken away, on line 2 2, Fig.l 1. l Y The lettera representsa housing adapted to be iitted into a length'of pipe-line A B, to

" which it is `connectedin suitable manner. The

\ pipe-line is adapted to convey steam, gas, or

a liquid under pressure from a boiler or reservoir to the place of consumption. Back-of its inlet end the housing a is iianged, as at a', for the reception of a threaded ring Z, which constitutes a valve-seat. Against this seatA is adapted to bear an outlet-valve o, mounted on a valve-stem o', which is guided within abearing Z of seat Z) and a bearing OZ of a rest 0Z. Upon the housing a is mounted a cylinder e,

containing a piston f, the rod f of which cylinder e' is connectedl to a valve-chest a', containing the slide-valve 0", movable on spindle 2. The valve isoperated by hand-lever j, ful* crumed at j and engaging valve-tappets 3.

The valve-chest obtains vits steam, &c. by an inlet-port /a'that enters housing a in front of valve c. From the chest 'Z one exitport 7c leads to the interior of housing Z back of valve c, while a second yexit-port k2 leads from the The chest to the upper"sectionof the cylinder@ abovepistonf. .u i U The housing is separated from the cylinder by a partition Z, havingfa central opening for the passage and guidance of the 'lower section of ypiston-rod f. rod section is pivoted at m the upper end of a linkfm, to the lower end of which are pivoted at m2 a pair oflinksm`3 mi. ,The link m3 is also pivoted at mito the valve-stem o', while the link 17a/*is pivoted atm to a support'm.-

The partition Z-is provided with oneorm'ore ports or openings` Z', which may be closed by `upwardly-,opening,weighted orl spring-infinencedcheckvalves n.

4Within the rear sectionof housing aisiittedan ejector composed Aof anozzlejp and a surrounding chamber p. kvThe nozzle p is arrangedL in .thefdirection of the How ofl the yThe operation is as follows: The apparatus is secured within pipe-line A B, preferably in proximity to the boiler, reservoir, &c. so that the pressure from the latter tends to close the valve o. is raised to open port lo and close port 702, while the cock z/ is opened. Steam will thus How into housing a to raise thepressure within the housing and pipe-line B. The steam will open valve fn, and enter the lower end of cylinder e below piston f. When the pressure of the steam against the innerface ofvalve c is equal about to the pressure against the outer face of thevvalve and the valve is thus balanced, the piston f will be raised and will thus open the valvec by links m 177.37704. When the valve has thus been opened, the vent 7L is closed, and the valve a" is lowered to close port k and open port k2. In this way steam is admitted above piston f, and the pressure on both sides of the piston is equalized. Thus the entire apparatus remains balanced, the tendency ofthe piston to descendfby gravity .being counteracted by To this lower piston-l To turn on the supply, the valve z" weight g. When the piston has arrived at its maximum elevation, the valve n, will close by gravity, and the apparatus is now set to convey the steam, &c. from the boilerthrough the pipe-line and housing a to the place of consumption. y

Under normal conditions the valve c will remain open and the piston f will remain raised, so that a uniform volume of steam is delivered. Under these normal conditions the jet passing through the nozzle p of ejector P will not create any suction in channel r.

If a break or leakage occurs in the rear pipesection B or the parts connected therewith, the velocity of the steam passing through the apparatus is increased to a considerable extent, so as to create a powerful current in nozzle p. This current will suck the steam from cylinder e below piston f, the steam iowing through channel r, chamber p', and pipe q into pipe B. The valve n is so weighted that the small difference oi' pressure thus created between housing a and lower part of cylinder e is not suliicient to li ft the valve. As the steampressure in the cylinder is thus reduced below the piston, the excess of steam-pressure above the piston causes the latter to gradually descend and to thus gradually close the valve c, such closing being assisted by the impetus of the steamjet against the outer face of the valve.

It will be seen that by my invention a slow movement of the piston and a corresponding slow movement of the valve either while opening or while closing is obtained. In this way sudden jars to the apparatus or the pipe and its connections are prevented, while a positive and reliable operation of the device is insured.

What I claim is- 1. In a cut-off apparatus, the combination of a housing with a cylinder, an intervening partition, an outlet-valve, a piston in the cylinder connected to said valve, and an ejector communicating with the cylinder, substantially as specified.

2. In a cut-01T apparatus, the combination of a housing with a cylinder, an intervening partition,'an outlet-valve, a piston in the cylinder connected to said valve, a nozzle in the housing, a surrounding chamber, and means for connecting said chamber to the cylinder between piston and partition, substantially as specified.

3. In a cut-off apparatus, the combination of a housing with a cylinder, an intervening partition, an outlet-valve, a piston in the cylinder connected to said valve, an ejector communicating with the cylinder below the piston, a port entering the housing, a second port entering the cylinder above the piston, and a valve for controlling said ports, substantially as specified.

4. In a cut-off apparatus, the combination of a housing with a cylinder, an intervening` partition, an outlet-valve, a piston in the cylinder connected to said valve, an ejector colnmunicating with the cylinder below the piston, a port entering the housing, a second port entering the cylinder above the piston, a valve controlling said ports, and a vent in the upper end of the cylinder, substantially as speciied.

Signed by me at New York city, (Manhattan,)New York, this 21st day ot' August, 1903.

FREDERICK WILLIAM A. WIESEBROCK.

Witnesses:

WILLIAM SCHULZ, FRANK v. BRIESEN.