US1275938A

US1275938A - Lock.

Info

Publication number: US1275938A
Authority: US
Inventors: Erland Juselius
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-08-11
Filing date: 1917-08-11
Publication date: 1918-08-13
Anticipated expiration: 1935-08-13

Description

ERLAND JUSELIUS, OF BROOKLYN, NW YORK.

LOOK.

specification of ;Letters Patent.

Patented Aug. 13, 1918 Application filed August 11, 1917. Serial No. 185,706.

o To all 'whom it mawnrn: t

Be' it known that/I, ERLAND JUsnLlUs, a citizen of the Unitedstates, a d a resident of New York, borough of Brooklyn, county of Kings, and State` of `,New York, have lnvented a `certain new and useful Improvement in. Locks, of which the following is a full, clear, and 'exact specification.

This invention relates' more particolarly` to' a class of door locking devices.

My invention has for its object primarily to provide a lock designed to be employed on the doors especially of buildings and elsewhere whereby each door may be locked in a manner against being surreptitiously opened by preventing the lock from being operated exteriorly of the door when closed by forcing a knife blade, or similar implement between the door and its frame as is incdent to the methods freqnently used to accon'iplish burglaries, and which is of a simple, eficient and durable construction adapted to be made for use as a rim or mortise lock. The invention consists essentially of a casing adapted to be applied on a door in opposition to two sockets provided in the frame of the'door. In the casing is a spring actuated bolt arranged so that one of its ends is normally disposed exteriorly of the casing for being removably seated in one of the sockets of the frame to lock the door when closed, and this bolt may be operated by a key or otherwise for being yieldingly guided within the casing lto' vunlook the door. Also yieldingly movable inthe casing between the bolt and the exterior of the door is a spring aotuated Shield element which is releasably held normally within the casing, and which is adapted `to be sprung when the door is closed whereby one of its ends will extend from the casing for removable insertion in thel second socket of the door frame to proteot the lbolt'from being operatedby an instrument when forced between the door and its frame. I I i Other objects of the invention are to provide means for Operating the spring element whereby it' will be yieldingly forced` outwardly of the casing on closing the door;

and to provide means on the Shield element engageable by the bolt so that the element will be guided inwardly of the casing when the bolt is similarly operated.

IVith these and other objects in view the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, in which similar characters of reference indioate corresponding parts in all the views, and will then be pointed outl in the claims at the end of the description.

In the drawings, Figure 1 is a fragmentary view showing a door with one form of lock elnbodying my invention applied thereto.

Fig. 2 is a view looking downward on the top edge of the lock.

Fig. 3 is a view looking into the casing of the lock showing its bolt in a position with one of its ends disposed exteriorly of the casing.

Fig. 4 is a similar view, partly broken away, showing the bolt positioned within the casi1 }g, and

Fig. 5 is a sectional vlew, partly in detail, taken on the line V-V of Fig. 3.

,The device, or lock hasa casing 10 which is preferably substantiallyA rectangular'in Shape to provide a front wall 11,'1'ear wall 12, bottom wall 13, top wall 111, and

side walls

15 and 16 both of which may be removably fastened to the other walls. AThe casing may be made of a suitable size so as to be embeddcd, or mortised in the door, as 17, of a building or elsewhere in opposed relation .to two adjaoent sockets, as 18 and 19, provided in the frame, as 20, of the door, or the casing may be made of a size and shape for use as a rim lock on the inner surface of the door.

In the ce'Antral parts of the upper portions of the

side walls

15 and 16 of the casing 10 is journale'd a transverse shaft 21 of a length so that both of its ends extend beyond these i ond the vside wall 16 may be mounted a nob, as 23, toa'llow the shaft to be rotated by the hand of a person when desired' i Interiorly of the'casing lbetween the bottom wall v13 and the top wall 14 as well as being spaced from the rear wall 12 is a stationary transverse partition 211' of a width tO fit olosely between the side walls 15` and 16, and in the central part o f the'edge of this partition which is adjacent to -the wall 15 is an elongated recess 25, while in the ceni 'tral part of the opposite edge of the partition is a similar elongated reoess 26. In

the front wall 11 of the casing adj aoent to ing 28 of the front Wall of the casing and' through the recess 26 of the partition 24:.` On the underside of the end of this plate of the bolt at its' end adapted to be moved inwardly and ou'twardly of the opening 28 may be a head, as 32', which is also movable inwardly and outwardly lof the opening 28, -and the part of this head together With the end of theI plate thereabove whichare movable outwar'dly of the opening may be bev-- l eled, as shown, according to the bolts of looks of this class. The head 32and the plate 31 may be integrally formed, and projeoting interiorly of the casing from this head as well as'depending from the nnderside of the plate 31 is a lug 33, while also depending .from the center of the plate in spaced relation to the partition 24 is another lug 34.

The bolt 30 is normally forced yieldingly in a direction so that its head 32 is disposed outwardly of the casing 10 so as to be removably seated in the socket 18 of the frame of the door by a spring, as 35. The spring '35 may-,be in the form of'a rod, or strip of spring metal having one of its ends secured, at'36, to the wall 13 of the casing while the second end of the rod is in movable contact with the lug 33 of the bolt, and this spring' is yten'sioned so as to normally force the bolt outwardly of the oasing. With the bolt 30 being operatively arranged in this manner its head 32 will contact with the 'frame of the door when inoved to' a closed position, and in turn the bolt will be gnided interiorly of the casing 10 against the tension of the spring V35, so that the spring will reversely act to cause the head of. the bolt to b'e remova'bly seated in the socket 18 of the frame of the door when entirely'v closedv The door will then be locked, and serving as means to operate the bolt whereby the door may be unlocked on the shaft 21 interiorly of the casing is lprovided a rollback as 37.' The roll-back 37 may bo in the form' of a curv'ed substantially triangu'lar plate, as shown, having its wide end held on the shaftso that its tapeed curved end normally contacts with the lug 34: of the bolt 30. When the bolt'30 is sprung utwardly of the casing, as explained, for looking the door this roll-back will be rotatably swung in a like direction, and when the bolt has moved a determined distance it is releasably .v

held against further movement by limitin'w the rotary movement of the roll-back by' pin, as 38, 'which is provided to protruoo from the side wall 16 of the casing in the path of movement of the roll-back. To operate thel bolt for nlocking the door, the shaft 21 is rotated by means of a key inserted in 'the barrel 22 or by rotating the knob 23 for swinging` the roll-back 37 in -a direction toward the rear wall of the casing,

as shown in Fig. L1. The .bolt will thereby be moved interiorly of thefcasing* againstA the tension of the spring 35 so that the door may be opened.

In order to protect the bolt 30 from being i w surreptitiously operated When the door. is locked by passing an instrument between the door and its frame, I provide a shield element, as 4:0. This shieldnelement is 'preferably in the form of an elongated substantially rectangular plate which is arranged interiorly of the 'casing on the side wal] 15 so that one of its ends maybe guided outwardly and inwardly of the opening 27 of 1 owc the Wall 11 of the casing. Th'e Shield 40 is of a length similar to the length of the bolt v30, and extending from the central part of the Shield toward the bolt 30 is a liig 41', while centrally of one of the edges of the shield is an elongated reoess to provide two spaoed Shoulders, as 42 and 43. The Shield element 10 Vmay be Ayieldingly forced outwardly of 'the casin'g by a spring, as444,

vshape to provide tw o angi-ilarly disposed

arms

47 and 48. The part of the pawl 46 at the juncture of its arms ispivotcd, at 4:9, to the side wall 1G of thevasing so that the free end of its arm 47 is in rcleasable engagement with the shoulder 42 of the shield element 4.0, and to yieldingly hold this pawl in contact with the shoulder of the Shield element a spring 50 is provided. The

p spring 50 may be in the form of a Curved rod, or strip of metal having one of its ends secured, at 51, to the wall 13 of the casing, and the other end of the spring movably abuts against the arm 47 of the pawl 46, the spring being tensioned to normally force the paWl toward the .Shield element.

When the Shield element 40 is disposed interiorly of the casing it is held by the pawl 46 against the tension of the spring 44 for being operated when the door is closed, and to cause the Shield element to be thus actuated, through an eye 52 projeoting from the wall 16 of the casing between the pawl 46 and the wall 11 of the oasing is a movable rod 53 which is of a length so that one of its ends contacts with the arm 48 of the pawl while its other4 end is -movably disposed through the hole 29 ofthe front wall 11 so o as to protrude a slight distance from the casing. On thevexterior of the front wall 11 of the casing is a transversely disposed strip 54 of spring metal having one of its ends secured, at 55, to the front wall of the casing, and the other part of this strip is bent outwardly from the casing so that its second end is disposed over the end of 'the rod 5 which protrudes beyond the casing.

When the door is being closed and With the contacting of its free front edge with the frame of the door, the spring strip 54 will also be contacted by the frame, and with the further movement of the door to a closed position the strip Will engage the protruding end of the rod 58. This rod will thereby be forced inwardly of the casing for swinging the pawl 46-on its pivot So as to throw the arm 47 of the pawl out of engagement with the shoulder 42 of the Shield element 40. The Shield element 4then being released will be caused by the tension of the spring 44 to be guided oit'wardly of the casing so that its end part in the opening 27 of the casing will be removably seated in the socket 19 of the frame of the door to prevent an instrument from being inserted from the exterior of the door between the door and its frame for attempting to surreptitiously operate the bolt 30 to cause the door to be unlocked.

To cause the shield element 40 to be operated, in unis'on with the operation of the bolt for unloeking the door, projecting upwardly from the end of the shield element i disposed through the 'opening 25 of the partition 24 of the casing,is a lug or flange 56 of a height as well as being arranged in abutting arrangement With the end of the bolt which isinteriorly of the casing. When the bolt 30 is operated to unlock the door, as hereinbefore explained, the movement of the bolt interiorly of the casing will like- Wise cause the fiange 56 and the Shield element to also be guided interiorly of the casforced by the spring 50 in a direction so that the arm 47 of lthe pawl will engage the shoulder 42 of the spring element. The Shield element will thereby be positioned interiorly of the ca-sing for subsequent operation, as above explained.

In the foregoing description, have embodied the'preferred forn'i of my invention, but I do not wishto be understood as limiting myself thereto as I am aware that modifications may be made therein without de'- parting from the principle, or sacrificing any of the advantages of this invention, therefore I reserve to myself the right to make such changes as fairly fall within the scope thereof.

Having thus described niy invention, I claim as new and desire to secure by Letters Patent 1. The combination, in a lock, with a bolt and a shield plate both beingyieldingly movable in a casing adapted to be applied to a door in opposition to two sockets whereby one end of the bolt normally protrudes beyond the casing for iiisertion in one of the sockets, and said bolt and plate coacting Whereby the shield plate will be moved int 'thel casing, releasably engag'ing the Shield plate for normally holding the plate within the casing, a rod movable inwardly and outwardly of the casing in contact With the pawl, and a spring on the casing, operable by the closing of the door to move the rod for Operating said pawl whereby the Shield plate will be moved outwardly of the easing into the second socket.

2. The combination, in a lock, with a bolt and a Shield plate both being yieldingly movable in a casing adaptedto be applied to a door in opposition to two soclrets whereby one end of the bolt normally protrudes beyond the oasing for insertion in one of the sockets, the bolt and plate coaoting whereby a the Shield plate will be moved interiorly of the casing when the bolt is lilrewise moved,

and a spring actuated pawl in the casing, releasably holding the Shield-plate normally within the casing, of a red movable inwardly and outwardly of the casing in contact With the pawl, and a spring on the easing, oper- 'by one end of the bolt normally protrudes beyond the casin for insertion in one of the, sockets, of a, ange on the plate contactin with the bolt whereby the Shield platebe'moved interiorl'y'of the casing when the bolt is likewise moved, a spring ctuated lpawl in the casing, releasably holding the v'Shield plate'nolgnally'within the casing, a

' rod movable inwardlyand .outwardly of the of the door to move the rod for Operating said paw] whereby the Shield plate will be moved outwardly of the 'easing into the second socket. I

This specification signed and Witnessed this tenth day of August, A. D. 1917.

ERLAND J USELIUS.