US1545712A - Valve lock - Google Patents

Description

July 14, 1925. 1,545,712

E. G. TOY

VALVE LOCK Filed April 10, 1925 Jersey, have invented certain new and use Patented July 14, 1925.

A UNITED STATES:

PATENT OFFICE.

EUGENE G. TOY, OF NUTLEY, NEW JERSEY, ASS IGNOR TO THE BARBOUR FLAX SPIN- NING COMPANY, OF PATEBSON,'NEW JERSEY, A CORPORATION OF NEW JERSEY.

VALVE LOCK.

Application filed April- 10, -1925. Serialpli'o. 22,007.

- To all whom it may concern:

Be it known that I, EUGENE G. ToY, citizen of the United States, residing at Nutley, in the county of Essex and State of New ful Improvements in Valve Locks, of which the following is a specification.

This invention relates to valve structures of the type in which the valve roper is closed or opened by rotating it by and one way or the other by means of a spindle formin an extension of the valve and havmg a construction'of valves of this type in which the handle part of the structure including the handle and valve proper may be renderedinoperative to screw in or screw out the valve to seat or unseat the same except by application of a suitable key, whereby only 0 a person having the key can effect opening or closing of the valve when the handle has been left in the inoperative state. The invention is designed to serve in the many instances where it is necessary to protect a valve from manipulation by unauthorized persons. Given a valve casmg, a valve member screwed therein and including a spindle having a rigid prolongation, the invention consists in providing the prolongation with a handle revolubly held thereon and key-operated means in the pro longation to lock the handle to the latter, whereby according as the locking is not or is effected the handle will be ino erative or operative for turning the valve. ventlon consists also in other features. involving protecting the lock against being tampered with and protecting the handle and lock mechanism from bemg removed fromthe valve spindle and from possible injury.

In the drawing,

Fig. 1 is a side elevation, partly in section, of the improved 'valve mechanism;

Fig. 2 is a view in section of said mechanism on a larger scale;

Figs. 3 and 4; are sections on line 3-3 and P4, Fig. '2;

Fig. 5 shows in side elevation, partly in secgion, and in end elevation the lock barrel; an

Fig. 6 is a perspective view of a certain forked plug.

A glo e valve such as is ordinarily s d andle, and it consists in a novel he inof special form for a purpose to be'stated and which coacts in the usual way with the gasket a which surmounts the valve packing (not. shown) contaipedwithin said'extension.

The spindle b is by my invention cut oil and formed at the top with a tenon b. d is the lock barrel. It has an upper end wall d apertured to receive a keyj but its lower end is open and also bifurcated, as'

at 03 Fig. 5. It contains a plug 6 in. its lower 'end, corres ondingly bifurcated, as at e, and said p ug is held therein by a pin f penetrating'iit .and the barrel so that the slots in their bifurcations register and form a mortise. When the valve spindle and barrel, with its contained plug, are assembled the mortise receives the tenon of the spindle, and to hold the parts together there are provided a collar 9 embracing them and a screw 7:. which is tapped through the several parts at the mortise and tenon connections then formed. -The barrel has a pair of opposed holes at (Fig. 5) and another pair of opposed holes 05 (Fig. 3)

the purpose of which will appear. The plug 6 has an upstanding lateral stop 6?, the purpose of which will also appear.

a is the valvehandle, including a circular handle proper i and a depending cylindrical shank 2' whose bore is adapted to receive the barrel d, which affords a bearing therefor. Its lower end is enlarged, as at 2' and has an internal annular groove 2' and pairsof opposed holes i communicating with said groove,

y is the bolt. It exceeds in length the diameter of the bore of the handle z'*'so that when the parts are assembled (by fitting the handle to the barrel so that'their holes d and i are alined and introducing the bolt endwise thereto) the bolt in any position to which it is then shifted confines locked against rotation relatively to the p barrel; when it is shifted to clear both holes 21 the handle may swivel on the barrel.

la is the bolt actuatin cylindrical block revolu le in the barrel above the bolt and having an, eccentric tang is engaged in a cross-slot 9" of the bolt. It is retained in the barrel by having an annular groove 0 thereof engaged by a projection formed internally in the barrel (at (i Fig. 5) by a prick-punch. Its upper endhas a suitable notch k to'receive the key A. For holding the bolt at either limit of its movement the cam is has a transverse bore k which contains a spring is pressing apart two balls is adapted to enter holes d of the barrel and thus releasably hold the cam against turning.

The stop 6 of the plug e, by receiving contact of the tang 7c of cam is, limits the movement of the cam to a half-turn, the bolt being shortened at one side of its slot '7" so that when the cam is shifted a half-turn in one direction the bolt will clear the handle, leaving it free to swivel, and when it is shifted a half-turn in the other direction the bolt will enter a hole 71 of the handle and lock it.

The locking .mechanism is protected against tampering, as through holes 73? by an upstanding guard 0 formed on gland 0.

At Z is a plug tapped into guard c in the zone of screw h. This is flush with the outer surface of the guard and may only be turned by employing a special tool, as a spanner wrench.

The handle with the barrel and its contained parts is assembled with the valve spindle b by fitting the mortise to the tenon with the collar on the protruding end of the barrel and then applying the screw h, plug l being first removed for the purpose.

The lock mechanism is made inaccessible through the handle from the top, except by the key, by a key-guide plug m permanently secured in place, as by a split-ring n engaged in mating grooves in the plug and handle (see Fig. 2).

The gland-extension 0' or guard performs three functions: It prevents tampering in any position of the valve (which appears fully screwed in in Fig.- 1 and screwed out in Fig. 2) with the locking device and alsowith the joint between the spindle and the prolongation of the latter formed by the lock barrel and it also reinforces the joined spindle and prolongation against distortion by a blow or other strain, it being noted that it snugly fits the lower portion of the handle shank for an appreciable extent thereof even when the valve is fully screwed out,

or open.

cam which is a Having thus fully described my invention what I claim and desire to secure by Letters Patent is:

1. In combination, a valve casing, a valve member screwed therein and including a 2. In combination, a valve casing, a valve member screwed therein and including a spindle protruding from the valve casing, a lock barrel alined with and rigidly jointed to the spindle, a handle held revolubly on the lock barrel, key-operated means in said barrel to lock the handle against rotating relatively thereto, and a guard projecting from the casing and surrounding the joint between the spindle and barrel.

3. In combination, a valve casing having a packing-receiving extension, a valve mem ber screwed in the casing and including a spindle protruding through the extension and having a prolongation, a handle having a cylindrical shank revolubly held on the prolongation and formed with a locking hole, key-operated locking mechanism in the prolongation including a locking device movable into and out of said hole, and a cylindrical shank revolubly held on the prolongation and formed with a locking hole,

key-operated locking mechanism in the barrel including a locking device movableinto and out of the hole, and a gland screwed on the extension and having a guard extending therefrom and surrounding the joint between the spindle and barrel in any posi tion of the spindle.

5. In combination, a valve casin having a packing-receiving extension, a Va-Ivemember screwed in the casing and includin a spindle protruding through the extension and having a prolongation, a handle having a cylindrical shank revolubly held on the prolongation and formed with a locking hole, key-operated locking mechanism in the prolongation including a locking device movable into and out of the hole, and a gland screwed on the extension andhaving a projecting portion formed around and snugly fitting the handle shank. In testimony whereof I aflix my s1 EUGENE G.

ature. CY.

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