US1416807A - Lock valve - Google Patents

Description

D. c. FISHER'.

LOCK VALVE. APPLxAIlo'N msn MAR.3,1921.

Patented May 23, 1922.

00h23@ 7 4 3 Wl Zh e W mi; w wmf/NZM. M Z. n n \T\ im n @m w naires DANIEL C. FISHER, OF BOSTON, MASSACHUSETTS.

LOCK VALVE.

Specification of Application filed March 3,

To @ZZ whom t may concern Be it knowiithat I, DANIEL C. FIsHEr., a citizen of the United States, residing at Boston, in the county of Suifolk and State of Massachusetts, have invented new and useful Improvements in Lock Valves, of which the following is a specification.

This invention relates to a stop cock for controlling the flow of Huid through a conduit, such as the gasoline feed pipe of an explosive engine on a motor Vehicle, the cock comprisinga casing, having an internal valve seat and inlet and outlet passages at opposite sides of the seat, and a plug valve tting said seat and adapted to be turned therein to open and close the cock.

The object of the invention is to provide a stop cock, the plug valve of which is adapted to be turned to open and close the cock, only bythe barrel or cylinder and the key of a pin tumber lock, such as the well known Yale lock. A lock of this type is recognized as affording a desirable degree of protection to property guarded by the lock.

The invention is embodied in the improvements hereinafter described and claimed.

Of the accompanying drawings forming a part of this specification,-

Figure 1 is a sectional view of a stop cock embodying the invention, the cock being closed.

Figure 2 is a view similar to Figure 1, showing the cock opened.

Figure 3 is a section on the 3-3 of Figure 2.

Figure el is a fragmentary side view, showing the interengaged portions of the lock barrel or cylinder and the plug valve.

Figure 5 is an end view, showing the inner or valve-engaging end of the lock barrel.

Figure 6 is a fragmentary sectional View, similar to a portion of Figure 1, showing a modification.

The same reference characters indicate the same parts in all of the figures.

In the drawings, 12 represents a cock casing or body having a tapered seat 13, in which the tapered plug valve 14C is fitted to turn. The easing has the usual inlet and outlet passages 15 and 16, and the plug valve has the usual transverse passage 17, which connects the passages 15 and 16 when the valve is open, the valve closingsaid passages when turned approximately ninety degrees from its open position.

plan of line Letters Patent.

ljatented lviiay 2S, 1922. 1921. Serial lo. 449,486.

The pin tumber lock which is combined with the cock, includes the usual barrel adapted to be turned by a key, through au angle of ninety degrees. Said lock ernbodles nothing new with nie, excepting; as hereinafter pointed out. if

rl'he lock casing 19 is fixed to the Cock body or casing' 12, preferably by a pin 25). as shown by Figure The lock barrel or cylinder 21 is in axial alinenieiit with the plug' valve 14, and is engaged with the latter preferably by means of a tongue 22, projecting from the inner end of the bari ,l. and a slot 23 formed in the outer end of the plug valve, said tongue and slot presenting coinplemental interengaging fares which are formed to cause rotation of the plug valve by the barrel, and to permit indrpendent cndwise movement of the plug valve by a spring' 25, interposed between thc barrel and the plug valve for a` purpose herein-y after stated.

As usual in locks of this type the barrci is normally locked in the case by spring pin tumblers 26, and is unlocked by "a key 2T having a stepped or irregular edge 28, adapted to displace .said tumblers to permit a partial rotation of the barrel and the plugl valve by the key. g; in other locks of this character, the case and tumblers are adapted to permit the insertion and removal of the key in and from the usual key slot 29 (Figure 5) only when the barrel is in the predetermined position shown by Figure 1, the usual tumbler-guiding orifices 31 in the barrel being in aliiiement with the usual sockets 32 in the case, in which the springpiessed barrel locking bolts 53S are movable. so that endwise movement of the key is enabled to displace the tiunblers and the bolts. lVhen the barrel is in the position shown by Figures 2 and 3, the tumbleis are rigidi)T backed by the ease 19, so that the key caunot be removed from the barrel. l so ai'- range the lock relatively to the rock body and its passages 15 and 16, that when thc barrel is in said predetermined position the cock valve ig closed, its passage 17 being out of alineiiient with Jthe body passages 15 and 16. lhen the valve is open, as shown by Figures 2 and 3, the key cannot be movedirom the barrel. rThe operator` therefore, knows that the valve is closed when the key is removed from the barrel. becausev the key cannot be removed when the valve is not fully closed. The cock body 2 is closed by an imperforate head 12a at the smaller end ot the valve seat, so that leakage from this end is impossible.

'Io compensate ior Wear of the valve seat and the plug valve, I provide the spring 25 and the above-described complemental interengaging means on the barrel and the plug valve. Said spring is preferably helical, and bears at one end on the bottom of a socket 3(3 in the plug valve, and at its opposite end on the barrel rib 22, as shown by Figures l, 2 and 3. In the modification shown by Figure 6, the spring is oi' larger diameter, and one ot' its ends surrounds a square shank or stud 39, projecting from the inner end of the barrel, the spring bearing on said inner end. The other end ot the spring bears on the bottom ot an annular socket 37 in the plug valve 14, said socket surrounding a square inner Socket 38, which receives the stud 39.

T he spring-receiving recess is located between the valve passage 1T and the larger end oit the valve, and the spring is seated at one end on the bottom or' said recess, the opposite end being in position to be pressed inward by the locll: barrel when the lock is inserted and secured in the socket of the cocl; casing. Ivi/hen the lock casing is in place and is fastened by securing means, such as the pin 20, (Figure 3), the outer end of the spring is seated on thc lock barrel and compressed thereby. rIhe operation of assembling the cock'casing and lool; therefore compresses the spring and causes it to hold the valve against its seat. The spring is located Wholly Within the periphery of the valve, so that I am enabled to employ valve seat and valve of suitable length to ensure a fluid-tight joint, Without providing a space in the cock casing, outside the valve seat, for the reception ol the spring. The length ot' the casing is, therefore, reduced to a ufiinimum.

The lool; case 19 is preferably li tted in a, socket 'formed in the outer end ol the cock body, by an annular wall 40, integral with the cock body and adapted to be inserted iu an orifice in a liXed support 4l, which may be the instrument board or dash of a motor vehicle, the arrangement of the socket being such that When the locl case is inserted, the barrel is in alinement with the plug valve. rlhe securing pin 20 is driven through the Wall 4() into the lock case as shown by Figure 3. Said Wall is provided with means for securing it to the support 41, said means being preferably embodied in an external screw thread 44 formed on the wall 40, and annular internally threaded clamping plates or washers 42 and 43. formed to be screwed up against opposite sides of the. support 41.

To prevent liability oi' the loosening of the clamping plate or Washer 43 by the jar to which the structure which includes the holder 4l is subjected, I provide the said Washer With an annular lock-nut 45, having anV internal thread engaging the external thread 44 on the annular Wall 40, and an external thread 46 engaging an internal thread 47 in an annular enlargement 48 on the Washer 43. The pitch of the lock-nut thread 4G is opposite that of the wall thread 44, and the thread 46 is finer than the thread 44. The enlargement 48 and the annular lock-nut are externally ot hexagonal form, so that they may be simultaneously engaged by-a Wrench, andturned to force the washer 43 against the inner side ot the holder 14. After this has been done the wrench may be moved slightly sidewise and engaged only with the annular lock-nut A slight turn of the lock-nut by the wrench now causes a binding action or' the interengaged screw threads on each other, and locks the inner washeragainst accidental turning.

I claim:

i stop-cock comprising a casing having at one end portion a tapered Vvalve seat, and at its opposite end portion a socket communicating With the larger end oi the seat; a tapered plug valve fitting said seat, and provided between its ends With a transverse passage adapted to connect inlet and outlet passages inthe casing, and With a springreceiving recess betweenA said passage and the larger end ot' the valve; a'pin tumbler lock, including a lock casing, and a valveturning lock barrel adapted to turn Ywithout endwise movement in the lock casing, said barrel and valve being provided 'with compleinental interengaging faces causing the valve to turn with the barrel, and permit.- ting independent endwise movements of the valve; a spring located Wholly ivithin 'the periphery of the valve, and seated at one end on the barrel, and at its opposite end on the bottom of the said recess; andmeans securing the locl: casing in said socket and maintaining the barrel in position to cornpress the spring.

In testimony whereof I have affixed my signature.

DANIEL c. msnen.

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