US1066021A

US1066021A - Door-lock.

Info

Publication number: US1066021A
Authority: US
Inventors: Joseph Kuske
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-12-12
Filing date: 1912-12-12
Publication date: 1913-07-01
Anticipated expiration: 1930-07-01

Description

J. KUSKE. nooR 1.00K.A APPLIOATION FILED DEC. 12,v 1912.

1,066,021. A Pater-.tea July 1, 1913.

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IIHH T3 l 2 1715 16" lfj UNTED STATES VPATENT OFFICE.

JOSEPH KUSKE, OF ASTORIA, NEW YORK.

:DOOR-LOCK.

To all whom z'i may concern Be it known that I, JOSEPH KUsKE, a citizen of the United States, residing at Astoria, in the borough of Queens, in the county of Queens and State of New York, have invented certain new and useful linprovements in Door-Locks, of which the following is a specification, reference being had therein to the accompanying drawings, forming part thereof.

My invention relates to door locks and has for its objects a combined lock and latch which is extremely compact, simple in construction, inexpensive of manufacture, durable and unlikely to get out of order.

Other objects and advantages of my invention will hereinafter appear.

My invention includes improvements in both t-lie latcliing and the locking mechanism affecting their coperative` correlation. These improvements relate to the carrying out of the above mentioned objects of the invention and more particularly, for example, to econoinizing space within the lock casing to the greatest advant-age while at the same time providing ample key space and to the production of a device which is highly effective as a whole and in all its parts.

My invention also includes several features of construction and combinations of parts, as will appear from the following description. j

I shall now describe the lock illustrated in the accompanying drawings embodying my invention in claims.

Figure l is a front elevation of the lock with the front plate renioved. Fig'.` Q; is a similar view with the casing partly ini longitudinal section and with the locking mechanism in the locking position. Fig. 3 is a longitudinal section on a plane indicated by the line 3 3 of Fig. 2 as viewed from below.` Fig. 4 is a transverse section on a pla-ne indicated by the line 4 4 of Fig. 2 as viewed from the left. Fig.k 5 is a front elevation of the tumbler,l for holding the locking bolt. Fig. 6 is a similar'view of the locking bolt. Fig. 7 is a reduced side elevation of the key for the lock.

The lock embodying my invention illustratedin the drawings has an elongated transversely rectangular casingprovided with a removable front plate 2 and a face Specification ofLetters Patent.

Application filed December 12, 1912.

Patented July 1 1913. Serial No. 736,275.

serted in an auger hole bored in theV edge of a door, and for house doors a convenient size for the casing, and one which also provides adequate strength in the workin@ parts of the lock, is such as will enable the casing to be snugly received into an auger hole of one-inch diameter, the cylindrical hole for the casing corresponding in diameter to the central circular portion of the face plate 2 (Fig. 4), other smaller shallow holes of a depth equal to the thickness of the face plate being bored in the door for the circular ends of the face plate.

Internally the casing is provided with a guide for a latch bolt and for a lock bolt, such guide being shown as a flattened, bifurcated post 4 arranged transversely of the casing and projecting forwardly from the back plate of the casing. A latch bolt 5 has an enlarged head guided iii the face plate, a cylindrical shank guided in the fork of the bifurcated guide post and a crosspiece forming a T at the rea-r end of the shank and adapted to abut against the guide post 4 to limittlie outward movement of the bolt. A coiled compression spring 6 surrounds the shank of the latch bolt and acts ibetween the post 4 and the head of the l latch bolt to project the latter.

tion. described. my invention and` shall thereafter point out Manually operable mechanism is provided for retracting the latch bolt and key-actuated locking mechanism is provided for locking the latch bolt in the projected posi- The latter mechanism will be first A transversely sliding lock bolt 7 (Fig.

has guide surfaces guided by the guide fpost 4 and is shown as provided with a guide-slot fitting' over the fiattened post 4 just back ofthe head and of the latch bolt 5 between the latch bolt and the back wall `of the casing. rlhe lock bolt 7 is adapted 5to slide on the guide post 4 transversely across the casing from the unlocked position, shown in Fig. l, to the locking position, sh wii` in Figs. 2 and 3, and vice versa.

i The lock bolt 7 is provided with a forwardly projecting stud adapted, in the locking posiltion of the lock bolt, to occupy a posit-ion 'plate 3. The casing is adapted to be inat the rear of and in the path of the crosspiece carried by the latch bolt 5 (Figs. 2

and 3) and, in the unlocked position of the latch bolt to occupy a position adjacent to the side wall of the casing and out of the path of the rear end of the latch bolt (Fig.

The rear edge of the lock bolt 7 is provided with a key-receiving notch having` shoulders adapted to be engaged by the full length central portion of the bit or wing of the key (Fig. 7) to niovc the lock bolt 7 in either direction. At.- a suitable distance rearward of the lock bolt 7 the casing is provided with a through key-hole 8. A bolt-holding tumbler 9 (Fig. 5) is provided and is shown as a flat apertured plate loosely surrounding the base portion of the guide post Ll between the locking bolt 7 and the back wall of the casing and pivoted on a short stud 10 projecting from such casing wall. The tumbler 9 is provided with a forwardly projecting lug which in the locked position of the parts enters a notch formed for the purpose in the forward edge of the lock bolt 7 (Figs. 2 and 3) and which in the unlocked position of the parts engages the adjacent end of the lock bolt (F ig. 1), in either case preventing the movement of the lock bolt, holding it at either the locked or at the unlocked position. bler 9 is adapted to be actuated by either of the reduced portions of the bit of the key, according to whether the key is inserted from the front or the back. The tumbler 9 is pressed to-ward its bolt-engaging position by a bent spring 11 anchored to a small, fiat, substantially triangular block 12 loosely fitting into the adjacent corner of the casing and held in place by a pin 13 carried by the front plate 2 of the casing and pressing with its free end on the anchor block 12.

The manually operable mechanism for retracting the latch bolt 5, when it is not locked by the lock bolt 7, will now be described,

A roll-back 14, having through it axially a square hole adapting it to be operated by means of a usual knob spindle and knobs, is jo-urnalcd in the rear end of the casing by means of shouldered reduced cylindrical ends passing through the front and back walls of the casing. A lever 15 of the third order is pivoted at one end on a pivot stud 16 projecting from the back wall of the casing and extends transversely substantially across the casing, terminating in a tapered and rearwardly curved free end adjacent to the casing wall, which is shown as slotted for the free movement of the lever (Fig. 2). A short link 17 is provided with rigid pivot studs one of which enters a pivot hole at a middle point of the lever 15 and the other of which enters a pivot hole in a lug projecting from the side of the roll-back 14. A pull-back strap or connecting bar 18 is slidable along a side wall of the'casing and has at its rear end a lug projecting` toward the back of the casing and having a conveXly curved sloping face engaged by the correspondingly inclined concavely curved free end of the lever 15, So that the lever will exert a slight but sufficient pressure to keep this end of the pull-back strap in contact with the wall of the casing. At its forward end the pull-back strap has a, toe which projects at the front of the cross-piece forming the 'l' at the rear end of the latch bolt 5, the adjacent end of this crosspiece keeping this end of the pull-back strap 18 close to the adjacent wall of thecasing. By reason of the constructive arrangement just described, ample key space is provided in the casing between the pull-back strap 18 in the opposite side wall of the casing, and likewise between the lever 15 Vand the locking mechanism, including the lock bolt 7 and its tumbler 9, thereby permitting the casing to be of minimum dimensions, particularly transversely. A bent leaf spring 19 engages the walls of casing and has a free end engaging at the rear of a pin on the pull-back strap 18 near the rear end thereof and acts to restore the pull-back strap and its actuating parts, including the lever 15, the link 17 and the roll-back 14, to the bolt-retractive position shown in the drawings. The bolt-projecting spring 6 could be strong enough also effectively to return the bolt-retracting mechanism, but the separate spring 19 for this purpose is of distinct value in that thereby the boltprojecting' spring 6 may be much more yieldablc or less stiff, permitting the door to close easily and also obviating wear on the latch bolt and its guides and on the usual. keeper. The front plate 2 of the casing is held in place by a single central screw entering a centrally located internally screw-threaded anchor post 20 on the back plate of the casing. The front plate 2 carries a short stud 21, for holding down the pull-back strap 18.

The operation of the above described lock embodying my invention has been described in connection with the description of the construction. lt should be noted, however, that the objects of my invention, stated at the beginning of this specification, have been effectively attained.

It is obvious that various modifications of the construction shown in the drawings and above particularly described may be made within the principle and scope of my invention.

I claim:

1. A door lock comprising, in combination, an elongated casing provided with a flattened bifurcated guide arranged transversely of the casing, a spring-proj ected latch bolt arranged longitudinally of the casing having an enlarged head and having ashank guided in the fork of the bifurcated guide, a transversely sliding key-actuated lock bolt provided with guiding surfaces guided by the guide and having a portion movable Vinto and out of the path of the rear end of iso the latch bolt to lock or to release the latch bolt, a lever arranged transversely of the casing and fulcrumed thereto, a roll-back journaled in the casing, connections between the roll-back and the lever for actuating` the latter from the former, and a pull-back strap engaged by the lever and engaging the latch bolt to retract the latch bolt and to permit independent inward movement of the latch bolt, the pull-back strap sliding along a side wall of the casing so as to provide key space within the casing inwardly from the pull-back strap between the lever and the lock bolt.

2. A door lock comprising, in combination, an elongated casing provided with a flattened bifurcated guide post arranged transversely of the casing, a spring-projected latch bolt longitudinally of the casing having an enlarged head and having a shank guided in the fork of the bifurcated guide post, a transversely sliding lock bolt provided with a guide-slot and guided by the guide post and having a portion adapted to move into and out of the path of the latch bolt at the rear thereof, thereby to lock or t-o release the latch bolt, and means for manually retracting the latch bolt when itis not locked by the lock bolt.

3. A door lock comprising, in combination, an elongated casing provided with a flattened bifurcated guide arranged transversely of the casing, a latch bolt having a shank and an enlarged head and a crosspiece forming a T at the rear end of the shank, the shank being guided in the fork of the bifurcated guide and the cross-piece being adapted to engage the guide to limit the outward movement of the bolt, a spring acting between the head of the latch bolt and the guide to project the latch bolt, a transversely sliding key-actuated lock bolt having guide surfaces guided by the guide and having a projection adapted to travel into and out of the path of the rear end of the latch bolt, a roll-back journaled in the casing, a lever fulcrumed to the casing and arranged transversely thereof. an operating connection between the roll-back and the lever for actuating the latter from the former, a pull-back strap slidable along aside wall of the casing and adapted to be engaged by the lever and having a toe engaging the forward side of the cross-piece of the latch bolt to retract the latch bolt and to permit independent inward movement of the same, and a spring engaging the pull-back strap to return the pull-back strapA and its actuating parts to the boltretractive position.

4. A door lock comprising, in combination, an elongated casing provided with a flattened bifurcated guide arranged transversely of the casing, a spring-projected latch bolt longitudinally of the casing having an enlarged head and having a shank guided in the fork of the bifurcated guide, a transversely sliding key-actuated lock bolt provided with guiding surfaces guided by the guide and having a projection adapted to move into and out of the path of the rear end of the latch bolt, a roll-back journaled in the casing, a lever of the third order fulcrumed at one end to the casing and extending transversely thereof, a link pivotally connecting the roll-back to the lever at a point eccentric of the former and medial of the latter, and a pull-back strap adapted to engage the latch bolt to retract the same and to be engaged by the free end of the lever and lying alongside ther adjacent wall of the casing so as to provide free key space within the casing inwardly from such strap.

5. A door lock comprising, in combination, an elongated casing provided with a flattened bifurcated guide disposed transversely of the casing, a latch bolt having a shank and an enlarged head and a crosspiece forming a T at the rear end of the shank, the shank being guided in the fork of the bifurcated guide and the cross-piece being adapted to engage the guide to limit the outward movement of the bolt, a spring acting between the head of the catch bolt and the guide to project the latch bolt, a transversely sliding key-actuated lock bolt between the rear portion of the latch bolt and the wall of the casing and having guide surfaces guided by the guide and having a projecting stud adapted to travel into or out of the path of the rear end of the latch bolt, a spring-pressed key-actuated tumbler plate pivoted to the casing between the lock bolt and casing wall and coperative with the lock bolt to hold the same, a roll-back journaled in the casing, a lever of the third order fulcrumed at one end to the casing and extending transversely thereof, a pivoted link connecting the roll-back to the lever eccentrically of the former and medially of the latter, a pull-back strap slidable along the adjacent side wall of the casing and adapted to be engaged by the free end of the lever and having a toe engaging the forward side of the cross-piece of the latch bolt to retract the latch bolt and to permit independent inward movement of the same, and a spring engaging the pull-back strap to return the pull-back strap and its actuating parts to the bolt-retractive nes-ities..

In testimony whereof I have aiiiXed my signature in presence of two witnesses.

JOSEPH KUSKE. 1Witnesses VTM. A. KELLY, Vio'ron D. Bons'r.

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