US1031293A - Door-lock. - Google Patents

Description

J. SGHIGKE.

DOOR LOOK.

APPLIOATION FILED NARA, 1912.

1,031,293. Patented July 2, 1912.

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;W/ E F I E m 7 7 h IQlE WITNESSES: IN VENTOR.

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El {1 ATTOI-ZNEY.

COLUMBIA PLANOGRAPN C0. WASHINGTON. D; (II.

JOSEPH SCHICKE, OF ST. LOUIS, MISSOURI.

DOOR-LOCK.

Specification of Letters Patent.

Patented July 2, 1912.

Application filed March 4, 1912. Serial No. 681,331.

To all whom it may concern:

Be it known that I, J OSEPH Sonronn, citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Door- Locks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in looks; and it consists in the novel details of construction more fully set forth in the specification and pointed out in the claim.

In the drawings, Figure l is a front view of my lock set in a door, the latter being broken away; Fig. 2 is a side elevation, with door shown part-1y in section; Fig. 3 is a rear end view of the lock; Fig. 4 is a cross-section on the line 4L-l= of Fig. 2 taken through the bolt-lock casing; Fig. 5 is a face view of the inside mechanism of the bolt-lock, one-half of the casing being removed; Fig. 6 is an inside View of the half casing removed from Fig. 5; Fig. 7 is aview similar to Fig. 5, with the bolt thrown to locking position; Fig. 8 is a face view of the tumbler which looks the keyhub or cylinder; Fig. 9 is a cross-section on the line 9-9 of Fig. 2; Fig. 10 is a plan of the key-hub; and Figs. 11, 12 and 13 are modifications showing different forms of casings.

The present improvement is more particularly directed to mortise locks of the tumbler variety, and has for its objects to provide an independent tubular housing or casing for the bolt-lock and door-knob latch respectively, thereby reducing the quantity of material necessary to be removed from the door to provide the mortise for the reception of the lock; to provide the boltlock with a rotatable key-receiving hub normally held against rotation by a specially improvised tumbler which can be displaced or released from the hub only by a properly fitting key; to provide a lock whose casing is susceptible of a variety of modifications; one which will not necessitate weakening the door from excessive mortising; and one possessing further and other advantages better. apparent from a detailed description of the invention, which is as follows Referring to the drawings, and for the present to Figs. 1 to 10 inclusive, C represents a tubular casing or housing for the bolt-lock, and O a similar housing or casing for the knob-operated latch L, the knob K being carried at either end of the rotatable shankor bar B passed through the easmg and through the door D as fully understood in the art, these features (except the casings C, C) forming no part of my invention. Preferably, the casings C, C, are each composed of two sections or halves separable along a longitudinal central plane and secured together by screws with the operating parts within the casings. The outer ends of the casings are connected by a plate P, the whole being set in the door as well understood in the art and secured in pos tion by a screw a as shown. With a casing as here described, where the individual casings C, C, are spaced apart, only sufficient mortising of the door to receive the casings and their-plate P is necessary, the portion of the door between the casings, into which the screw a is driven remaining intact, so that the door is in no wise weakened in the region of the lock. The plate P is of course, provided with openings for the free passage therethrough of the latch L and the bolt 1.

- The bolt 1 is provided with an elongated slot cl which is traversed by the stud or boss 2 which receives the screw 3 by which the two halves of the casing C- are partially held together (provision being made at the inner ends of easing sections for another screw passed through at 3). Pivoted about the stud 2 is a spring controlled tumbler 4 provided with notches 'n, n, to engage a pin or peg 5 on the bolt and hold the latter in an unlocked or locked position according to which notch (n, n) happens to be in engagement with said pin. A conventional spring 6 holds the tumbler depressed against its pin as understood in the art. The tumbler is raised or disengaged from its pin for purposes of throwing the bolt, by means of a process or tooth t formed about the periphery of a rotatable key-hub 7 the latter being likewise provided with a second and longer process t to operate between the walls of the recess 1' formed in the rear extension 1 of the bolt.

No novelty is here claimed for the manner of actuating either the tumbler 4 or the bolt 1 through the instrumcntality of the rotatable hubor cylinder 7 by which the key S .is received, the invention being directed to' the mechanism by which the hub is held against rotation and how released when a proper key is inserted thereinto. This mechanism is as follows :It will be seen that the hub 7 is provided with a longitudinal (or axial) passage h for the free passage therethrough of the stem of the key S, the key being preferably of the flat variety and the passage h oblong in cross-section. The periphery of the hub at the end farthest from the teeth 2 t, is grooved at points diametrically opposite one another, the grooves or recesses m, m, being parallel to the teeth 2?, t, and to one another, and transverse to the hub axis, and of a depth to communicate with or cut across the axial or key passageway 72 (Figs. 8, 9, l0). Across either groove m (depending on which one is presented thereto) .is adapted to bear the free terminal of a spring-controlled tumbler 8, likewise pivoted to the stud 2 but on the side of the bolt 1 opposite from the tumbler 4L,

and provided with the usual controlling spring 9. The tumbler 8 is provided with a tooth 10 which, as the tumbler lies across the base of the recess m, enters the passage h to a depth beyond the base of the groove m and approximating about one-third the height of said passage (the height being the larger dimension of the oblong defining the cross-section of the passage). The projection of the tooth 10 into the passage 72. to a depth beyond the base of the groove or recess m locks the hub 7 against rotation (Fig. 8) and before the latter may be turned to throw the bolt, the tooth 10 of the tumbler 8 must be dislodged, or raised sufliciently to clear the walls of the passage-way h. This dislodgment is accomplished by the bevel or wedge shaped end 0 of the key S. As the bevel end of the key engages the free edge of the tooth the latter is lifted and hence the tumbler 8 is lifted to cause the tooth 10 to clear the hub 7 when the latter will be free to turn to throw the bolt. By providing two recesses m, m, at points diametrically opposite one another the tooth 10 may settle in either one depending on whether the lock bolt 1 is thrown to looking or unlocked position. We thus have a tumbler-controlled key-hub which can only be turned by the key after the latter has released the tumbler by which the hub is locked against rotation. The disengagement of the hub y from the tumbler 8 by means of the key which rotates the hub constitutes one of the features of the present invention.

The operation of the bolt 1 is obvious from the preceding. Upon inserting the key through the key-hole 0 of the casing G into the passage ]Z- of the hub 7 and disengaging the latter from the tumbler 8 as described, the hub is free to turn with the key. The turning of the hub aotuates first the tumbler 4 which releases the bolt, after which the bolt is thrown by the hub-process t as described.

The form of the individual casing C, C, or plate P, may of course, be varied. In Fig. 11 I show plain circular casings E, E, connected by a plate G having a narrow middle portion terminating in enlarged portions; in Fig. 12 I show a tubular cylindrical casing E with flattened sides; in Fig. 13 I show a tubular cylindrical. casing E with peripheral corrugations. The examples may be multiplied indefinitely. Structural details not alluded to are old in the art and require no description.

Having described my invention, what I claim is I11 a mortise-lock, a tubular casing open at one end, a sliding bolt therefor, a rotatable key-hub having an axial passage-way poly onal in cross-section for the insertion of a key passed through the wall of the casing, and provided with processes for throwing the bolt, the hub'being provided with diametrically disposed parallel grooves intersecting the passageway and establishing communication therewith through the walls of the hub, a spring-controlled pivoted tumbler adapted to rest with its free end across either groove and provided wit-h a tooth entering the passage-way beyond the base of the groove for locking the hub against rotation, said tumbler being adapted to be dislodged by the insertion of a key having a bevel end engaging the tooth and lifting the same out of the passage way, leaving the hub free to rotate with the turning of the key, whereby the bolt may be thrown.

In testimony whereof I affix my signature, in presence (if two witnesses.

JOSEPH SOHIOKE.

Witnesses:

EMIL STAREK, Jos. A. MICHEL.

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

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