US522480A - Automatic gas-governor - Google Patents

Description

(Nb Model.)

J. J. MYERS. AUTOMATIC GAS GoVERNoR.

Patented July 3, 1894.

f UNITED STATES PATENT OFFICE.

JOHN. J. MYERS, on BALTIMORE, MARYLAND( vAUTOMATIC*eAs-evnunon.

' SPECIFICATION forming part or Letters Patent Ne. 522,480, dated muy 3,1894. Applicata fudnecemur 6,1893. sean Ia. 492.911. naman 1b all whom it may concern,.-

I ne in known that I, JOHN J. MYERS, a citizen' of the United States, residing at Baltimore, in

the State of Maryland, have invented certain new and useful Improvements in Automatic Gas Governors or Controllers; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to malce'and use' the same.

This invention has relation to automatic gas governors or controllers of that class' in which the governor or controller comprises a.

'yt'anl or cup containing a supply of liquid,

.suchjas glycerine, and a reciprocating valve attached to a cylindrical neat.

This invention consists, first, in the novel con's`t1.uction combination and arrangement of parts hereinafter described; second, in providing the float drum with protecting tins to equalize the resistance, and prevent vibrathe valve plays.

tion or iuttering of the valve; third, in pro- 'viding the glycerine tank with a double, removable top forming a separate chamber in the upperpart of the tankfor the reception and retention of the liquid raisedunder the influence of back pressure.

In the accompanying drawings, Figure 1 is a vertical, central `section of the governorl or controller embodying my invention. Fig. 2 is a horizontal section on line X-X of Fig. 1.

A designates the casing or shell of the governor, consisting of an inverted Vbell-shapedI lstructure having connection B, C for attachf ment to the meter, and service pipe respectively.l f

The base A of the structure is a casting, having above the' inlet B a threaded, enlarged aperture B', forming the seat for an `exter nally threaded flanged ring b,.constituting the valve seat, and constructed with or hav. ing attached to it askeleton frame D, having cross bars d, d', through which the stein c, of

G designates the'tloat or drum, which is at'. tached to the upper part of the valve stem, and covers the cylindrical wall-II supported on the base ofthe casing A. 1 f

The stem e has athreaded enlargement ev at its upper end, whichpasses through an apa erture inthe top of the drum, and carries two Vn`uts`,f, 7S-which secure the drum Vand bvalve stemtogether, but -allow vthem to be easily separated. l I,

'Io the stem e is secured a plate g provided on the under side with a pin h, whichpasses through a hole y-in the top of the frame D, and

acts as a guide or feather to hold the'valve in position after being first properly adjusted to its seat; In adjusting the valve to its seat the valve is first-attached to the stem e, andv the plate g, beingloose on the ste:xn,the valve is turned around on its seat until it is seen that it makes a perfect joint with the seat. 'v

The plate g, is then soldered to the stem and v the stem and valve are thus prevented from turning but are allowed to move freely in the 4direction of the; length of the stem.

'lhe valve and its connections, as described, are removable without disorganzation ot the other parts of the structurer--lieretetore the valve has been so constructed and arranged,

that when cleansing or repair lis required the entire structure had `to be removed, andas frequent cleaning is required the work is troublesome and expensive.

On the outside of the iloat drum are ar -ranged the tins K, K, which offer a'n lobstruction to the too rapid rise and fall of the drumy and valve, and hence prevent tlntteringor vibration.

L, designates an inner supplementary cover consisting of a concave-convex plate resting at its edge or rinion aslrelf or bead lformed within the casing above the float drum and pierced aroundv its rim with holes m, which,

when there is an excess of normal pressure.-l

within the float drum acts as a splash plate to prevent the vglycerine from splashing or bubbling up against the top edge of the casing or the bottom of the casing cover and e'x- `uding through the joint between the casing and the cover of the same. With this supple- .the abnormal pressure ceases, return to its normal position in the tank. 'The suppleinentary cover or' .splash plate "will, thus prevent the impairment of the sealot the gov- `mentary coveror splash plate in position when thereis an excessof thenormal p ressure within A and maybe provided ,c cover allow the air to 3 9,

ernor and serve to maintain a suiicient quan` tity of glycerine in the tank at all times, whereas if the supplementary cover b`e omit# ted the'splashingof the glycerine against the outer cover and the consequent exudation of the glycerine through the joint of the outer cover will eventually reduce `the quantity ofv glycerine in the tank to such an extent as to destroy the usefulness of the governor. 4

The casing is provided with an outer cover or cap M, which is secured by a padlock to prevent meddling with the valve.

It is necessary that the supplementary cover L, should rest with its edge or rim a` considerable distance below the edge o'f the outer cover or cap M, so as to prevent the glycerine when it bubbles up through the supplementary cover from reaching the top of the tank, as, if lthe main and supplementary covers were close together, their edges would form a common joint and the supplementary cover would aid rather than prevent the escape of glycerine.

he outer cover o1' tightly or hermetically fitted to the casing with a small vent hole, so as to avoid compression of the air within ythe casing and the holesin the supplementary pass freely through the coycfrsoas to avoid any compression ofthe airbeneath .theV same, as any considerable compression of thel air would interfere-with the proper action ofthe apparatus.

t and provided with a cap M, should not be Having described my invention, I claim as new and desire to secure by Lettersl Patent- 1. In an automatic gas governorY or.' controller, the combination of a casing having inlet' and outlet ports and a oat drum, with a removable valveand valve seat, said valve.

seat\consisting ofa threaded ring fitting a threaded opening in the base of the casing and having` formed or attached upright frame D, hayingholes in the top for the passage ofthe valve stem and guiding pin and the valve stem e soldered to the valve and carrying the plate `Isoluered to said stem tially asdescribed.. .v

2. In an automatic .gas governor or controller, the combination with' the valve,`the float drum, the exterior casing andthe' ,unsealed o r pervious maincover, of the removable supplemental perforated cover or splash plate L, seated` within th'e casngybelow the guiding'pin H, substan-` thereto an

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