US1489415A

US1489415A - Cut-off appaeatus foe liquid-supply lines

Info

Publication number: US1489415A
Authority: US
Publication date: 1924-04-08
Anticipated expiration: 1941-04-08

Description

April s, 1924. 1,489,415

A J. B. ANDERSON GUT-OFF APPARATUS FOR LIQUID SUPPLY LINES Filed July '7. 1923 Patented Apr. 8, 1924.

UNITED STATES JAMES B. ANDERSON, F SHALEB, PENNSYLVAIA.

CUT-OFF APPARATUS FOB LIQUID-SUPPLY LINES.

Application filed July 7, 1923. Serial No. 650,169.

To all twhom t may concern:

Be it known that I, JAMES B. ANDERSON, residing at Shaler Township, in the county of Allegheny and State of Pennsylvania, a 3 citizen of the United States, have invented or discovered certain new and useful Improvements in Cut-Off Apparatus for Liquid-Supply Lines, of which improvements the following is a specification.

My invention relates to improvements in cut-off valves. IVhile not so specifically limited, I have applied it as a safety and wastepreventing device, in connection with a domestic heater, and in that application I shall 16 describe it. The valve is one which peculiarly adapts itself to conditions of use, and is therefore most effective in service.

In the accompanying drawings Fig. I is a view in vertical section of apparatus embodying my invention; Figs. II and III are views of it in section, on the planes indicated by the lines II-II and III-III, respectively, Fig. I. Fig. IV is a fragmentary view showing in alternative position a certain part illustrated in its assembly in Fig. I. In a supply pipe 1, through which it will be understood flows liquid fuel to the burner of a domestic heater, are arranged two valves whose casings are shown at 2 and 3. One of these, that within casing 2, is a handoperated valve, and a crank arm 4 is shown, by the turning of which the valve may be shifted from open to'closed position, and to open position again. This hand-operated valve is in normal operation an emergency device. Ordinarily it stands open and inactive.

The valve within casing 3 is shifted from open to closed position and back to open position again, by the swinging of a crank arm 5. The swinging of this crank arm is eiiected automatically, as I shall now describe.

The crank arm 5 extends substantially horizontally, and terminates in a seat for a thrust member. This seat conveniently takes the form of a downwardly flaring cone 6. Beneath the crank arm 5 is arranged a tank 7 adapted to receive through a connection 8 the drip from the burner. Within tank 7 is a float 9 and float 9 carries a stem 10. The parts are so arranged that as liquid collects in tank 7 and float 9 rises, its stem 10 engages the seat formed at the end of crank arm 5, and by its continued rise it effects turning ofV crank arm 5 and consequent shifting of the valve within valve cas i ing 3 from open to closed position.

The tank 7 is, for convenience in such an installation, contained within a casing, and is removable from the casing, to the end that after liquid has collected in it and by operation of the parts indicated the supply valve in casing 3 has been closed and the liquid fuel supply out ofi', the tank may be removed from the casing and its contents disposed of, and then being empty may be replaced again and the cut-olf valve in the liquid fuel supply pipe opened again.

To Such ends, the whole apparatus is here shown to be included within a box-like casin 11. The tank 7 takes the form of a c1311 indrical cup with a handle to it. Within t e casing and in its lower part is a seat 12 upon which the cup 7 may be brought accurately to position and from which it may readily be removed. The casing itself is provided with a hinged front wall 13, to permit of removal and replacement of the The crank arm 5 is provided with an extension 14, and cooperating with this extension 14 is a latch 15. The latch 15 is counterweighted, as indicated at 16, and tends always to close. It closes under gravity when and only when crank arm 5 is swung (clockwise, as shown in Figs. I and IV) to the position of valve closuref-the position particularly shown in Fig. IV. Being closed it locks the cut-oli' valve within casing 3 in its closed position.

A bell-crank lever 17 also under the inluence of weight 16 swings against gravity to raise the weight and shift latch 15 from locking to unlocking position with respect to extension 14. This bell crank lever 17 is so disposed that cup 7 when it comes to position on seat 12 swings it, raising weight 16, to the position in which the latch 15 is ineffective and crank arm 5 is free to swing. And in the positions to which they thus are brought bell crank lever 17 and the latch 15 and their associated parts remain, so long as cup 7 remains in position on its seat. When however cup 7 is again removed, the weight 16 becomes effective, and, crank-arm 5 being at that instant in normal operation swung (clockwise) to valve closing position, latch 15 advances and locks the crank-arm in its then valve-closing position.

Operation will readily be understood. The parts are shown in Figs. I-III in the position on its seat.

position Which they occupy While the burner is in normal opera-tion. The cutoff valve Within casing 3 is open. As liquid fuel drips at the burner it is carried through pipe 8 to cup 7 and there collects. As it collects float 9 tends to rise.

It should have been explained that the float 9 is of such shape and size that when in place Within the cup the upper end of the stem 10 which the float carries is aligned With the Haring cone 6 above. This is clearly shown in the drawings.

The rising of the float swings crank-arm 5 and so, on the accumulation of a certain amount of drip, eifects closure of the cutoff Valve and stoppage of fuel supply. This condition continues until the accumulated drip is disposed of. The stoppage of fuel then is an indication to the user that the accumulated drip must be disposed of. It may indicate to him that his burner needs attention, if the accumulation of the critical quantity of drip has come about in a very short time.

The user then must dispose of the accumulated drip. Attention particularly7 to Fig. II will show that he first swings door 13 outward and upward, to have access to cup 7. He then grasps cup 7 by its handle 18 and removes it. In removing it he Withdraws it to the right (Fig. II).. It'has been said that float 9 is so proportioned that the stem 10 which it bears always is aligned with cone 6 above, so long as the cup rests in Now a further refinement is to be remarked, that float 9 is still susceptible to a limited amount of lateral displacement Within the cup. In consequence, the cup is shifted to the right on its seat 12 While stem 10 still engages from below its seat on crank-arm 5. Immediately cup 7 is so 'moved bellscrank lever 17 is released and the Weight 16 becomes effective. Under iniiuence of this Weight. latch 15 is shifted and the crank-arm 5 thus is locked in valve-closing position. Y Cup 7 is then Wholly removed, and with it float 9 With its stem 10, but in. its removal the cut-ofi' valve has by operation of the instrumentalities indicated, already been locked in the closed position to Which it had been brought. In this position it continues While cup 7 is absent from its seat in the casing.

Thus I accomplish it, that neither through ignorance nor through carelessness can dangerous or wasteful or untidy drip of oil occur While the cup 7 is absent from its place.

When after removal of the cup and einptying it it is restored to its place (the iioat then, of course, resting on the bcttem of the cup) the seating of the cup Will shift the latch 15 and raise Weight 16, and allow crank-arm 5 to turn (anti-clockwise, Fig. I).

,he crank-arm may be turned and the valve opened in any preferred Way. The parts may be so formed and proportioned that this Will occur under gravity, or under spring tension, or the turning may be effected manually.

The valve casing also is conveniently brought Within casing 11, and the crank-arm l by which the cut-oif valve Within casing 2 is shifted, may extend, as the drawings show, through a suitable slot in the iva-ll of casing 11.

The valve in casing 2 of course controls the fuel supply independently, `and it ,may be shifted when, for example, the heating apparatus is to stand inactive for a relatively long time, as during the summer months. It may be shifted also in such case as this: when casing 3 with its valve and the valve-operating parts are for any reason removed.

The invention is applicable to cut-off valves generally.

I claim as my invention:

1. Cut-ofi' apparatus for a liquid supply line including the combination with a liquid conduit and a cut-oft` valve arranged within the conduit, of a seat, a liquid receptacle rio applicable to and removable from said seat, f

a float within' said receptacle ,adapted .in its rise to shift said valve, and means rendered ineffective Vby application of the receptacle to its seat for locking said valve against shifting.

Q. Cut-off apparatus for a. liquid supply line including the combination With a liquid conduit and a rotary cut-oli' valve arranged Within the conduit of a crank-arm extending from said valve, a seat, a. receptacle for liquid applicable to and removable from said seat, a float Within said receptacle and adapted when the receptacle is in'place on its seat to engage in its rise said crank-arm, and means controlled by the application of the receptacle to and the removal of it from its seat for locking said valve against rotation.

3. Cut-ofi' apparatus for a liquid supply line including the combination, with a liquid conduit and a cut-oif valve arranged within the conduit, of a seat, a fluid recep tacle applicable to and removable from said seat, a float Within said receptacle and adapted in its rise to shift said valve, a gravity-impelled latch for said valve. and means held in active position by the seated receptacle for holding the latch against gravity in inactive position.

#1. Cut-off apparatus for a liquid supply line including the combination, with a liquid conduit and tivo rotary cut-oit valves arranged Within the conduit, of a `casing inclosing so much of the conduits as contains said valves, crank-arms earned by each of the tivo said valves, one of said crank-arms lll being acessible for manual turning, the other adapted to be turned by automatically operated means arranged within the casing, such means including a seat7 a liquid receptacle borne removably on said seat, and. a float arranged Within said receptacle and adapted in its rise to engage the crank-arm of the valve, and a gravity impelled latch adapted to lock the automatically operated valve in closed posit-ion, said latch being sustained in ineffective position by the seated receptacle.

5. Cut-off apparatus for a liquid-supply line including the combination with a conduit and a valve therein, a downwardly flaring conical seat borne by the valve stem, a liquid receptacle and a seat upon which said receptacle is removably borne, a float of less diameter than the receptacle arranged within the receptacle, said float being provided witli a stein which when the receptacle is on its seat projects vertically upward beneath the flaring conical seat borne by the valve stem, a gravity operated latch for the valve and means rendered effective by the seated receptacle for holding said latch in retracted position.

In testimony whereof I have hereunto set my hand.

JAMES B. ANDERSON.

Witnesses:

GEO. A. KINLEI, J. B. GARNER.