US1810760A - Lock - Google Patents

Description

LOCK Filed Sept. 26. 1929 r 2 Sheets-Sheet l -l INVENTOR thcobfi z'edma [71:72. BY

ATTORN EY June 16, 1931.

J. FRIEDMAN 1,810,760

LOCK

Filed Sept; 26. 1929 2 Sheets-Sheet 2 IN VENTOR Jacob Fr zedm an ATTORNEY Fatentecl June 16,

UNITED STATES PATENT OF -ICE JAGOBFFIRIEDMAN, or nnw YORK,1\T; Y.

Application filed September- 26, 1929. Serial No. 395,389.

This invention relates to looks, the general object of the invention lock that it will be practically burglar proof by making the locking bolt hook shaped so they will make'a positive. connection witht-he keeper. r a a Anotherobject oftheinvention is to provide a lock of the general type indicated above which shall be of simple construction and positive in operation, which shall be adapted to be applied to either a swinging .or a ing door and which shall be so constructed as to effectively prevent; an unauthorized entrance through the door. 7 I

Other objects wlll appear as progresses. The "drawings are intended merely to indicate a possible embodiment of the invention; It is obvious that the needs of manufacture may necessitate certainmeclianical changes It is therefore not intended to limit the invention to the embodiment illustrated but ratherto define-such'limits in the appended claims. o v i In brief'the invention mainly consists of a slidingplate or boltactuator to whichare pivoted a pair of hooked bolts which engage.

or disengage-with the keeper-when the key or; knob is turned.

For a more generalunderstanding of the I invention attention is called to the drawings. In these dra-wings likenumerals, indicate like parts throughout the specification. y i Figurel is a sectional view of the lock and keeper showing them disengagedjirom each other, i e j Figure 2 is a similar view as Figure l-but with the bolts partly in a locked position;

Figure 3 is'another'view 'similarlto Figure 1 but showing the bolts in a fully. locked position. w

Figure 4 is a! section on line l -4: of urel.

Figure is asection on line 5-5 of ure2mv Referring now-to the drawings in detail numeral 1 designates the casing for the lock which may be bolted on thedoor or other structum to be openedand 2 the keeper attached to a stationary part of abuilding.

Within the casing is sliding-bolt actuator 3 being to so form the boss 9 01 thekeeper.

, port 10 is a lever loosely and pivotally slidthe disclosure with a slot 17 formed to clear the locking "The neutral position of the supported by the slides 41: and 5. Pivoted to the bolt actuator on the pins 6 and 7 are two hook shaped bolts S'ada'pted to engage with. Also pivoted to the pins (Sand 7 and normally resting on the sup- 11.- The pins 6 and 7 are permanently attached. to the bolt actuator 3 but howev'er the bolts 8 and lever 11 are: mounted-thereon, 1 As noted in Figures 4 and 5a cylinder lock 12-is mounted in the door and held in place by any suitable means. The cylinder lock 1 has the usual key'opening with which the key 13 is inserted for rotating the key plug 14 and operating the lock. This cylinder lock may be of anyappropriate design such as is now used in conventional locks; Fixed to thekeyplug 14: are two cam arms 15 and ldwhich alternately engage and disengage in the bolt actuator 3. 7 The bolt actuator 8 is slotted as at 18 in order lug- 10 when the said actuator'slides on its supports. e

cam arms 15 and 16 is as shown in Figures 1 and 3. To

retain the arms in this position a pair of [springs 19 are provided the periphery of the key plug 14;. Cut in the periphery of thekey plug ,aretwo flattened which bear against portions 20. 86

WVhen' the ends. of the springs come in con:

tactwiththe said flattened portions the key plug will be locked in place and any 'acci dental turning will be prevented. I

Attached to thekey plug'l l and extending I outward of the casingyl isa V knob 21 for actuating the cams 15 and 16. This-knob is) directly opposite'the cylinder lock 12. As, noted inFigures 3, t and 5 the keyis adapted toenter the end of the key plugli. (It will the key plug can; be

thus be apparent that revolved by the key on the outside of the door V or bythe knob ontheinside ofthe door.

The operation of this device is as follows. Asshownzin Figure 1 the device is inxthe 95 unlocked position. To lock the door the key or knob is turnedguntilthe cam arm 16 lifts the lever: 11 as shown inFigure 2 thereby disengaging the notch. 22 of the lever from the locking lug 10,1 At the sametime the 19K nates the various screv.

cam arm 16 will move the bolt actuator 3 and the parts associated therewith towards the keeper. The hook shaped bolts 8 will then pass through the openings 23 of the easing and envelop the boss 9 as shown in Figure 3. When it has reached this position the lever 11 will drop down until th notch 24 will register with the locking lug 10 and thereby hold the lever, bolt actuator and its associated parts in further actuated by the knob or key. To keep the lever ll normally in a horizontal position a. torsion spring 25 is provided.

One end of the s n-in g is attached to the piv oting point of the lever while the opposite end is fastened to a lug 26 attached to the bolt actuator. While the movement of the bolt actuator in a horizontal plane the hook shaped bolts will describe a circular or enveloping movement when the bolt actuator is moved towards the keeper. This is due to the curvature of the bolts when passingjust wide Numeral 27 desigfor holding the device in place and 28 an inside detachable cover plate for having access to the mechanism.

It will thus be seen that I have provided a simple efficient lock which can easily be attached and can be used for hinged or sliding doors. The shape of the bolts or looking ends makes for an efficient type of lockfor the reason that the said bolts when engaging the boss of the l: eper, act hooks and are not easily displaced. Also when in a locked position the bolts are concealed and protected so that tampering with the lock is extremely difficult. Furthermore the employment of-a plurality of bolts of this construction which are movable independently of each other is desirable for the reason that an entrance through the door cannot be forcing; one of the locking bolts from its engagement with the keeper as that in no wise affects the locking position of the other lookthrough the openings which are enough to guide the bolts.

ing bolt which must also be forced out of its locking position betore the door may be opened. p

The lever 11 provided with a double set of notches 22 and 24 which register alternately with the locking lug 10. By this arrangement the bolts 8 cannot be moved unless the lever 11 raised by the turning of the key 'or knob.

Having described my invention, I claim 1. In a lock of the class described comprising a casing, a keeper, a bolt actuator slidably supported in saidcasing, a pair of'pivots attached to the forward part of said bolt actuator, one of said pivots having attached thereto a hook shaped bolt, the other of said pivots'having attached thereto a co-operating hook shaped bolt and a lever, said lever having a pair of notches which correspond to the locked and unlocked positions of the place until the lock is gained by merelyto a hook shaped bolt, the other or" said pivots having attached thereto a co-operating hook shaped bolt and a lever, said lever having a pair of notches which correspond to the locked and unlocked positions of the bolts, a locking lug which engages with said notches for preventing any accidental movement of the bolt actuator, and a pair of cams for si multaneonsly lifting one end of said lever and moving said bolt actuator.

3. In a lock of the class described comprising a casing, a keeper, a bolt actuator slidably supported in said casing, a pair of pivots attached to the forward part of said bolt actuator, one of said pivots having attached thereto a hook shaped bolt, the other of said pivots having attached thereto a cooperating hook shaped bolt and a lever, said lever having a pair of notches which correspond to the locked and unlocked positions of the bolts, a locking lugwhich en ages with said notches for preventing any accidental movement of the bolt actuator, and a pair of cam arms for contacting at the same time with said lever and said bolt actuator for lifting said lever and moving said bolt actuator simultaneously.

. 4:. In a look of the class described comprising a casing, a keeper, a bolt actuator slidably supported in said casing, a pair of pivots attached to the forward part of said bolt actuator, one of said pivots having attached thereto a hook shaped bolt, the other of said pivots having attached thereto a co-operating hook shaped bolt and a lever, saidlever having a pair of notches which correspond to the locked and unlocked positions of the bolts, a locking lug which engages with said notches for preventing any accidental movement of the bolt actuator, a pair of cams for moving said bolt actuator, a pair of flattened portions in said cams, and a pair of springs which engage said flattened portions and normally keep said cams in a horizontal posi tion.

5. In a lock of the class described comprise ing a casing, a keeper, a bolt actuator slidably supported in said casing, a pair of pivots attached to the forward part of said bolt actuator, thereto a hook shaped bolt, the other of said pivots having attached thereto a co-operating hook shaped bolt and a lever, said lever having a pair of notches which correspond to the locked and unlocked positions of the b0lts,'a locking lugwhich engages with-said notches one of said pivots having attached for preventing any accidental movement of I the bolt actuator, a pair of cams for simultaneously lifting one end of said lever and moving said bolt actuator, a pair of flattened 1 5 portions in said cams, and a pair of springs which engage said flattened portions and normally keep said cams in a horizontal position. 7 i

, 6;In a lock of the class described compris- 10 ing a casing, a keeper, a bolt actuator slidably supported in said casing, a pair of pivots attached to the forward part of said bolt actuator, one ofsaid pivots having attached thereto a hook shaped bolt, the other of said vpivots having attached thereto a co-operating hook'shaped bolt and a lever, said lever having a pair of notches which correspond to the locked and unlocked positions of the bolts, a locking lug which engages with said notches go for-preventing any accidental movement of the bolt actuator, a pair of cam arms for con- 7 tacting at the same time with said lever and said bolt actuator for lifting said lever and moving said bolt actuator simultaneously, a pair of flattened portions in said cams, and a pair of springs which engage said flattened portions and normally keep said cams in a horizontal position. In testimony whereof I afliX my signature. 3() JACOB FRIEDMAN.

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