US608100A

US608100A - Annunciator gas-fixture

Info

Publication number: US608100A
Authority: US
Publication date: 1898-07-26
Anticipated expiration: 1915-07-26

Description

No. 608,I00. Patented .luly 26, i898. J. L. BIXBY.

ANNUNCIATUR GAS FIXTURE.

(Appum'ien med Nov. 2e, 1597.)

UNITED STATES PATENT OFFICE.,

JOHN LEWIS BIXBY, OF ARLINGTON, MASSACHUSEFS, ASSlGNOR T() NATilANlEL CONANT, OF EROOKTNE, MASSACHUSETTS.

ANNUNCIATOR GAS-FlXTURE.

SPECIFCATION forming part of Letters Patent No. 608,100, dated July 2G, 1898.

Application led November.26, 1897. Serial No. 659,754. @lo model.)

To @ZZ whom t may concern.-

le it known that I, JOI-IN LEwIs Diner, of Arlington, in the county of Middlesex and State of Massachusetts, have invented anew and usefulAnnuneiator Gas-Fixture,of which the following is a specification, reference being had to the accompanyingdrawings, making a part thereof.

My invention is the combination ofthe cool; with an annunciatorin such manner that the act of opening the cock operates the annuneiator, and while its in ain object is to decrease the frequency et gas-poisoning due to leaving a gas-cool; open but unlighted, yet another important object is to enable the quantity of gas or other Vlluid supplied to be determined without a meter.

ln the drawings, Figure l. is a sectional elevation of the best forni of oooh embodying my invention. Figs. 2 and 2 illustrate the inanner of actuating' the plunger. Fig. 3 is an en d elevation el' the cani and its handle. Fig. a is a sido elevation of a spigot-cock of usual construction, but litted with wires and oontaets. Figs. 5 and (3 are sections on lines 5 5 and G C oi Fig. l. Figs. 7 and Sare diagrams illustrating my invention, Fig. 7 with two wires and Fig. 8 with three wires.

ln order to attain all the objects of my invention, l use a gas-cool; which must be either fully opened or fully closed, for as the time during which the cool; is open can be readily ascertained from the annuneiator and as the capacity eln the burner is a definite number et cubic feet per hour the amount of gas supplied can be readily determined without regard to a meter. Moreover, such a cock, with its valve carried by a spring-plunger, is especially adapted forcombination with an annunciator, as one ci' the contacts can be carried by the plunger and all contacts can be covered by a cap, which is desirable, although not essential, and in addition the use of such a oooh does away with all danger of that coin- Inon form of accidental gas-poisoning due to accidental opening er partially opening the cool; or to leaving the gas burning so low that ordinary variations of pressure in the mains will put out the light and yet leave the escaping.

I will therefore ,ti rst describe my new cook, which in itself is a valuable feature 'of my invention. It consists et a body A, with the usual inlet and outlet pipe connections a and a', but between these two connections is a port a2, closed by a valve a3, which is carried by plunger a", whose spring a5 tends to keep the valve seated. The plunger is raised by a cam as, which is se constructed that it will not sustain the plunger until the plunger is fully raised, as will be plain from the drawings. l have shown the cam ab' as a cylinder with segments out away, and this is the preferred ferm, as a revolution of a very Afew degrees is enough to allow the plungerspring to seat valve as.

Plunger a4 carries terminal l), and when the plunger is not raised l) is in contact with terminal U, thus connecting wires d and d, for l) is the terminal of d and D of d, and when wires d and d' are connected the proper shutter or other moving part of annunciator D is moved to its position, which announces that the oook is elosed, and the. motion of the sluitter opens the circuit through wires d. and d', near the annunciator,thereby preventing further low et' the current through wires d and d, and also closes the circuit near the annunciator through wires d and (Z2, but no eurrent flows, because wires d and d2 are not then connected near the oooh; but when Valve a3 is held from its seat the new position of plunger at connects terminal ZJ with terminal b2, and thus completes the circuit through these wires d and di, and the current iiows, shifting the shutter of annunoiator D to its position, which announces that the oook is open, and that shitting of the annunoiator opens the circuit through d and d2 and closes the circuit through d and d near the annuneiator; but as terminal l) is not then in contact with terminal ti/ no current flows until plunger a'l is released and terminal Z1 again brought into contact with terminal 11'; but the details above adverted to are too well known to require further description, ior the annunciator D, with the three-wire system, to move a screen, or a shutter, or a plate, or a lever, er the like to one position when the circuit' is through one pair of the three wires and to another position when the circuit is through. another pair of the three ICO Wires has long been familiar to all skilled in that art.

Then an ordinary spigot-cock is used in the embodiment of my invention-as, for eX- ample, in Figs. 4, 5, 6, and 7 1 prefer to use only two wires d and d', the terminal b of Wire (il being brought into contact with the terminal b of Wire d when the gas is turned on. This completes a circuit through Wires d and d and sets the annunciator to announce that the cock is open, and the action of the shifting part of the annunciator breaks the circuit at the annunciator, as is usual in this Well-known form of annunciator on the two-Wire system. In this form of my invention the attendant Who has charge of the annunciator will make regular visits to the annuneiators and Will learn by looking at the annunciator which of the cocks connected with it has been opened, and by shifting the shifting part of the annunciator from its position announcing that a cock has been opened to its normal position he will close the eircuit at the annuneiator; but if the cock still be open the circuit will still be closed at the cock and the shifting part will not remain in its normal position after he shifts it back to that position and he will know that the cock is still open, whereupon if that cock ought not to be open at that time or in that place he will at once investigate the matter.

I am aware of Patents No. 358,161, dated February 22,1887, to McVay, and No. 491,580, dated February 14, 1893, to Milligan, and disclaim all that is shown in them, for in my invention it is essential that when the circuit is made by opening the cock it shall be automatically broken at the annunciator end of the circuit, and there is no hint or suggestion in either of the above patents as to anything of this sort.

What I claim as my invention is- 1. In combination a cock for permitting and preventing the 110W of a fluid; an annunciator with means for automatically breaking the circuit; electrodes controlled by the cock to make the circuit When the cock is opened; and electric conductors connecting the electrodes of the annunciator with electrodes of the cock, substantially as described.

2. A cock having a passage connecting its inlet and outlet; a valve controlling that passage; a spring-plum ger controlling that valve; and a cam to move the plunger and automatically hold the plunger when in its elevated position, against the force of its spring, all substantially as and for the purpose speciiied.

3. In combination a cock with a passage controlled by a spring-plunger and a cam to move the plunger against the force of its spring; an electrode carried by the plunger; a second electrode which is in contact with the plunger-electrode when the valve is closed; a third electrode which is in contactwith the plunger-electrode .when the valve is open; conductors for the three electrodes; and an annunciator connected by the three conductors With the three electrodes, all substantially as described.

JOHN LEWIS BIXBY.

Witnesses:

JOHN R. SNOW, O. R. MITCHELL.