US944686A - Automatic gas-regulator. - Google Patents

Description

G. H. MURRAY. AUTOMATIC GAS REGULATOR. APPLICATION FILED AUG. 10, 1909.

Patented Dec. 28, 1909.

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GEORGE E. MURRAY, 01? BRISTOL, VERMONT.

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Specification of Letters Patent.

Patented-Dec. 28, 1909.

lpplication'filed August 1 0, 1909. Serial No. 512,128.

To all it may concern: v

. Be it known that I, GEoaeE H. MURRAY,

a citizen ofthe United States. residing at cured to a gas jet.

meral 1 desi Bristol, in the county of Addison and State of Vermont, have invented certain new and useful Improvements in Automatic Gas- -Regi 1lators, of which the following is a specification.

' This invention relates to new and useful improvements in automatic gas regulators.

without the valve having been closed the device would automatically operate to close the same.

' Another object .is to provide a means whereby a thermostat may be adjustably se- With these and other objects in view, the present invention consists in the combination and arrangement of parts as will be hereinafter more f ullydescribed and particularly pointed out in the appended claims, it being understood that changes in the specific structure shown and described may bemade within the scope of the claims withput departing from the spirit of the inven- In the drawings forming a part of this specification, and in which like numerals of reference indicate similar parts in the several views,- Figure 1. shows a side elevation of an automatic gasregulator embodying my invention. Fig. 2 shows a front elevation thereof. Fi 3 shows anenlarged detached detail 0 the thermostat. Fig. 4 shows an enlarged central sectional view of the thermostat holding member. V

Where a gas flame is employed for illuminating or heatingpurposes, it quite frequently happens that through some cause the flame becomee extinguished. The gas continuing 'to escape is likely to fill the apartmentto the danger of the occupants. In In present invention I"provide a light, readi yadjustable means whereby upon the extinguishment of the flame the flow of gas is automatically-checked:

In the accompanying drawings, the nuprovided with the gas jet 1 connected to the supply ipe by means of the elbow-2. Secured to t 1s jet 1' is.,the gas tip 2' the ates a suitable gas supply pipe valve 3.

At a suitable point within the pipe 1 I provide the valve 3' to the stem 4- of which I secure the arm 5 carrying the weight head 5 provided with the recurved en aging ear 6, as clearly disclosed in Fig. 1. ecured to this supply pipe 1 is the ear 7 carrying the pin ,7 Wl'llCh pivotally-supports a detent in the form ofa dog 8 havin the extending lip 8 arranged to be held be ow the ear 6 to secure the weighted arm in one of its extreme positions. This detent performs the function of an armature in that the same is provided with the armature bar 9. Working against this armature 9 is the co l sprlng -9' insuring the armature being yleldmgly held, the outward travel of the armature be-,

ing limited by the stop shoulder 11' contacting with a suitable base 10. The base 10 which carries the ear 7 also supports the electromagnet 10 held for co-actlon with the armature, in the usual manner. At a suitable point I provide the batteries 35. a conductor 37 being led from one pole of the battery to one terminal of the electromagnet, as disclosed in Fig. 1.

The weight 5' is arranged to drop upon the release of the detent to close the valve 3', and positioned within the path of this traveling weight 5 is the insulated yieldingly-held contact making arm 12 which is arrangedtoobe in normal engagement with the stationary arm 11 also insulated, these arms 11 and 12 being secured to the supply pipe 1. The construction is such that when the traveling weight 5' drops the same contacts with the yieldingly held member 12 to carry the same out of contact with the .stationary arm 11. A conductor 38 1s led from the yieldingly held member 12 to the remaining post or contact point of the electromagnet 10. I u

Adjustably secured to the gas et or bracket 1, is the insulated clampingcollar 17 which is pinchedto this gas et or bracket by means of the clamp screw 40. This clamp collar carries the spher cal head 16 upon which is movably clamped thesleeve 14 which is in-the form .of two similar members held" together by means of the screw 14' sot-hat this clamping sleeve may be "secured to the spherical head 16. Su1tably secured to this clamping sleeve 1s the preferably metallic housing or casing 13 from the bottom 13' of which extends the centrally held pin 29.' Secured to thiscasing is the binding post 18 and at a suitable point opposite is the insulated binding post.

20. An electric conductor 36 extends from the-battery 35 to the insulated binding post 20.- Extendingfrom this insulated binding post 20 is the conductor 21 which is led to an insulated switch'contact'22 in the path of the switch blade 24 mounted upon the pin 24, this switch blade also being insulated from the casing13. Extending from this Switchblade 24 is the conductor 25 connected to a stationary insulated contact lug 26. Secured to the hou'singor casing 13 and in contact with the binding post .18, is thethermostat 33 of any approved construction which at'its free end by means of a pin 32 is connected to a link 31 and this link 31 by means of the pin 30 is fastened to the pivotally held traveling contact maker 28 held to the pin 29, this traveling contact maker having the contact lug 27 arranged for co-action with thestationary contact 26. A suitable conductor 39 extends from the binding post 18 to the stationary switch arm 11.

As disclosed,'-the switch blade 24 is in the path of the lower end of the traveling contact maker 28 so arranged that when the thermostat actuates this traveling member 28 the switch blade 24. will be thrown, upon the switch contact 22.

Owing to the swivel connection between the clamp collar and the thermostat housing,

In adjusting the instrumentalities the operator first throws the switch blade 24: oil? of the contact 22. The circuit is then broken. The weight 5 is then carried upward .to open the valve 3', the weight being held in an upward position in securing the ear 8 below the lip 6. The valve 3 is then opened and the gas ignited. This results in the thermostat elongating to actuate the traveling member 28 to carry'the contact makers 26 and 27 apart to break the circuit at that point. As the contact maker 28 is advanced it engages the switch blade 24- to carry the same intocontact with the member 22 to close the circuit at this point. The switch members 11 and 12 in this position of-the instrumentalities are in closed contact. .The energizing circuitis, however,'open in that the terminals 26 and 27 are separated. The instrumentalities being thus arranged with the flame burning, should the flame be sud-v denly extinguished the thermostat .33. will contract so that the terminals 26' and 27 will again be brou ht into contact. This will result in entire y closing .the circuit and eneling contact maker, a switch contact in the tomatically operating a valve is that the thermostat carrying case may be tilted over and against the burner 2 so that where a very small night flame is used, should the flame become extinguished the valve will be automatically closed. This attachment may be effected in any suitable workmanlike manner. The device is simple and inexpensive of construction and both durable'and eflicient. in operation, and the adjustments may be made with ease, accuracy, and despatch.

Having thus described my said invention what-I claim as new and desire to secure by United States LettersjPa-tent is:

i 1. .The combination in a device of the character described, of a gas sup, ly pipe having a burner, of a valve within s id pipe, a. weighted stem to form a gravity actuated valve, a detent engaging said weighted stem, an electromagnet to operate said detent, a normally closed switch operated through contact "with said weighted stem, a thermostat, a traveling contact makerflsecured to' said thermostat, a stationary contact maker for co-action with said traveling contact maker, a switch blade actuated by said trav-v path of said blade, an electric source of energy, and a conductor connecting said instrumentalities in circuit as and for the purpose set forth.

. 2. The combination in a device of the character described of a gas supply pipe having a burner, of a valve within said pipe, an arm extending from said valve, a weight carried by said arm said weight having a projecting car, a pivotally held armature provided with an extending. lip engagin said car, a normally closed switch operated by the release of said'weighted arm, a ther- .mostat, a traveling contact maker secured to 1.15

said thermostat, a-stationary contact-maker for co-action with said traveling contact maker, a switch blade actuated by said traveling contact maker, a switch contact in vthe 'path of said blade, an electric sourceof .en-

ergy, ,and a conductor connecting said instrumentalities in circuit, as and for thepurpose set forth.

3. In a device of the character described, the combination with a supply pipe having a burner, of a valve within'said supply pipe, a weighted stem extending from saidvalve to provide afgravity actuated valve operating means, a detent engaging Sflid'WGl hted. stem. an electromagnet to operate sai de-.

tent, a normally closed switch operated by the fall of said weighted stem, a thermostat, means to adjustably secure said thermostat to said supply pipe, a traveling cont-act maker secured to said thermostat, a stationary contact maker for co-act-ion with said traveling contact maker, a switch blade actuated by said traveling contact maker, a switch contact in the path of said blade, an

electric source of energy, and a conductor magnet to'operate said detent, a normally,

closed swit ch operated by the release of said weighted stem, an adjustably held thermostat,-a traveling contact maker secured to said thermostat, a stationary contact maker 0 U i maker, a switch blade actuated by said traveling contact maker, a switch contact in the path of said blade, an electric source of en erg a conductor extending from one pole of said electric source and connected to said switch contact, an electric conductor extending from said'switch blade to said stationary contact, an electric conductor extending from said traveling contact maker and se cured to one member of said normally closed switch, an electric conductor extending from the remaining member of said normally closed switch and to one terminal of ductor extending from the remaining terminal of said electromagnet to the remaining pole of said source of supply.

In testimony whereof'I afiix my signature, in presence of two witnesses.

GEORGE H. MURRAY. Witnesses FREDERICK H. PALMER, SERAPH C. SNEDEN.

said electromagnet, and an electric con for co-action with said traveling contactzs

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