US1137775A - Lock. - Google Patents

Description

I. D. MERRITT.

LOCK.

APPLICATION FILED SEPT. 23. 1911.

1,1 37,775. I Patented May 4, 1915.

WITNESSES: IIVVENTUI? IHE NORRIS PETERS co. PHOTO LITHO.. WASHINGTON. D. c

srars PAT IRVING D. MERRITT, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented May 4, 1915.

To all whom it may concern:

Be it known that I, IRVING D. MERRITT, a citizen of the United States, and'residing in the city and county of New Haven and State of Connecticmut, have invented new and useful Improvements in Locks, of which the following is a full, clear, and eXact description, when taken in connection with the accompanying drawings, which form a part thereof.

My invention relates to looks, and more particularly to that type of lock in which a dead bolt is operable by the thumb-turn at the inside of the door and a key inserted at the outside of the door.

The primary object of the invention is to provide an improved arrangement of the thumb-turn hub and dead bolt tumbler with respect to each other, whereby the efiiciency of the thumb-turn mechanism is increased and any tendency of the same to jam or stick is eliminated.

With this object and others in view, my invention is embodied in preferable form in the lock hereinafter described and illustrated in the accompanying drawings.

In these drawings, Figure 1 is a view in elevation of a lock containing my improvements and with the cap plate removed; Fig. 2, a similar view showing one of the wings of the operating hub in engagement with the tumbler of the deadbolt so as to release said tumbler and with the dead bolt partly protracted; Fig. 3, a vertical section on line wm of Fig. 2 through the operating hub, tumbler and bolt; Fig. 4c, a detail plan view of the deadbolt tumbler; Fig. 5, a detail edge view looking from one side of said tumbler and the operating hub; Fig. 6, a detail side view of the operating hub alone; Fig. 7 a side view in elevation of inside of cap plate with hub in place therein; and Fig. 8 is a detail view of the thumb-turn proper.

Referring to the drawings, 1 is a casing of the lock, and 2 the face plate thereof. Mounted within said casing is a deadbolt 3 on which is pivoted a tumbler 4' having a locking lug 5 adapted to cooperate with a tumbler stump 6 projecting from the rear wall of the casing. This tumbler is mounted on the inside of the bolt and is provided with a loop-shaped or ring portion 7 at 1ts rear end within the area of which is formed the opening 8 through the front wall of the casing for the purpose of receiving the stem 9 of an operating hub 10. The collar 11 positions the hub correctly with respect to the tumbler. Near its inner end the hub is provided with two winged portions 12 and 13 extending radially in substantially diametrically opposite directions from the hub, and providing a double reversible wing. Each wing portion is curved or inclined forwardly in the line of direction of protracted movement of said hub, such formation being effected by providing a concave curve to the forward edge of the wing and a conveXcurve to the rear edge of the wing where said rear edge joins the peripheral end of the wing. The hub is squared interiorly and V is adapted to be engaged by a corresponding squared shank 14 of a thumb turn 15 which grojects beyond the lock on the inside of the oor.

The wing of the hub lies inside of and over the upper part 16 of the loop portion 7 of the tumbler 6 so that said wing is freely movable over this part of the tumbler. The lower part 17 of the tumbler is raised, and is provided with a reentrant projection or tongue 18, the inner face of said tongue and lower part of the ring being substantially flush with the inner face of the wing of the hub and such projection eX- tending within the circle of the movement of the diametric double wing. In other words, the projection 18 of the tumbler is substantially in the plane of the double wing of the thumb-turn member, whereas the remaining part of the tumbler loop 7 lies back of the wing and presents a surface on which the wing is guided for rotation. The projection 18 extends between the talons 19 of the deadbolt 3, said projection fitting closely against the rear talon and leaving a slight Mounted in the casing is a cylinder lock of the usual construction provided with a rotatable operating dog 20 on its inner end. This dog is adapted to engage the tumbler projection 16 at the upper part of the loop 7 and at the same time to enter between the upper talons 21 of the deadbolt for the purpose of retracting or protracting said deadbolt through the operation of a key inserted 10 into the cylinder look from the outside of the door. 7 7 The wing of the thumb-turn member 1s normally held in a horizontal position as shown in Fig. 1, by means of a spring 10* on the cap plate engaging one edge of the wing, as shown in lig. 7.

The operation of the device is as follows: When it is desired to protract the bolt from the inside of the door by the thumb turn, the

latter is turned clockwise whereupon the wing of the hub that is disposed toward the rear will be turned so as to carry the end of the wing against the inner end of the projection l8, forcing said projection outward by the peripheral contact of the end of the wing with said projection until the tumbler is released from the tumbler stump. At the same time, the wing enters between the lower talons of the bolt and the bolt will be protracted in the further movement of the hub. As the locking lug of the tumbler is carried past the stump to the other side thereof the tumbler is restored to locking position, and the wing is carried past and free of the talons, in which position it will be seen that the hub is unconnected with the tumbler and hence the tumbler and bolt may be retracted through the rotatable dog of the cylinder lock without rotating said hub. If after 4 such retraction by the dog of the cylinder lock, the bolt is again protracted by the thumb turn, the wing portion opposite to that which has efiected the preceding operation engages the tumbler and lower" talons and protracts the bolt.

therefore permits the hub to be free of the bolt and tumbler and yet always in position to protract or retract the bolt.

Having thus described my invention, what I claim and desire to secure by Letters Patcut, is

1. In a look, a bolt having different pairs of talons, a tumbler for the bolt, a projection on said tumbler movable between the talons of one pair, key operated means cooperatingwith said projection and with said last named talons, another projection on the tumbler movable between the talons of the second pair, and a thumb-turn member c0- operating with said last named projection and with the second pair of talons; substan tially as described. I

j 2. In a look, a bolt having a pair of tal ons, a tumbler having a projection movable between said talons, a thumb-turn hub hav- The double wing ing a diametrical. double wing movable in a circle and either end ofwhich is arranged to coact with said tumbler projection and said talons, and a spring acting on said thumb-turn hub and normally-holding said double wingout of contact with said projection and said talons; substantially as described.

3. In a look, a bolt having a pair of talons, a tumbler having a projection movable between said talons, a thumb-turn member movable in a complete circle and having a diametrical double wing,- either end of which is arranged to cooperate with said tumbler projection and said talons, means on the go tumbler to guide said wing into engagement with said projection and talons, and means acting on said thumb-turn member and normally holding it in a horizontal position and clear of the bolt and tumbler, so that the bolt may be protracted without actuating said thumb-turn member; substantially as described.

4. In a look, a bolt having talons, a tumbler having a loop, a thumb-turn member mounted within saidloop and havingawing movable over and guided by the latter, and; a projection on said loop between the bolttalons arranged in the plane of the thumbturn wing and adapted to be engaged by the latter said thumb turn member movable in a complete circle; substantially as described.

5. In a look, a bolt having upper and lower talons, a tumbler for the bolt having a loop, a projectionon said loop entering the space between theupper talons, another projection on said. loop entering the space between the lower talons, key actuated means cooperating with one of said projections and the adjacent talons, and thumbturn operated means cooperating with the other proj ection and its adjacent talons; substantially as described.

6. In a look, a bolt having upper and lower talons, a tumbler for said bolt having a loop, a projection on said loop entering the space between the upper talons, another projection on said loop entering the space below the lower talons, a cylinder lock having a dog cooperating with the upper projection and the upper talons, and a thumb-turn hub extending through said loop and having .a wing cooperating with the lower projection and the lower talons; substantially as described. 12a

7. In a lock, a bolt having different pairs of talons, a tumbler having projections co operating with the respective pairs of talons, a cylinder lock having a dog cooperating with one of the tumbler projections and one pair of talons,'a thumb-turnhub having a double ended wing rotatable in a complete circle and cooperating with the other tumbler projection and the otherbolt talons, said wing being engageableat the same end, on a movement of the bolt in one direc- In Witness whereof, I have hereunto set tion, with the last named projection and talmy hand on the 24th day of August, 1911. ons, and a spring normally holding said IRVING D. MERRITT. Wing out of engagement With said last Witnesses:

5 named projection and talons; substantially JOHN H. SHAW, as described. BERTHA RAY.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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