US1351117A - Lock construction - Google Patents

Description

F. A. NEWHALL.

LOCK CONSTRUCTION. APPLICATION FILED DEC. Ia. I sIg.

1 35 1 1 1 7, Patented Aug. 31, 1920.

Tfg. l.

LOCK COlJSTRUCTDN.

Specification of Letters atent.

lfatented Aug'. 3l, 13220.

Application led November 13,1919. Serial lilo. 344,530.

To /IZZ folto/.u t may concer/1t:

lle it known that l, lfiunmnion A.. Nnwirim., a citizen ot the llnitod States, and residing; at New York, in the county of New "fork and State oi New -ifork, have invented certain new and useful lniprovements in Loek Constructions, of which the followingv ,is a. specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relate to lock construeT tions and particularly to devices oli' this class designed lor use in locking doors or yother su.'iiieiiiig` or moving members; and the object ot the invention is te provide a supplemental lock member which cooperates with the lock i'isualiy emgloyed and is operated thereby; a further object boing, to provide a supplemental lock which .is constructed ot comparatively strong;- mate 'ial and `which ro perates with the lock usually employed to pi ent the forcing et the door or other member in connection with which the lock mechanism is employed; and with these and other objects in view the invention consiste in a lock construction of the class specilied which is simple in construction and operation and ellieient in use and constructed as eiuaii'fter described and claimed.

rThe invention is ttully disclosed in the iollowii" Asp1-mitication, ot which the accompanyii'ig` dra wine' forms a part, in which the separate parts ot my improvement are designated by suitable reference characters in eac i oi the rviews,'and in which 'lgure l is an inside view ot'a part of a loor and door trame and showing my imn prl ved loi-,k construction attached thereto;

fig. 2 a partial section on the line 2 2 of 1... l

3 a partial section on the line 3-3 of l? l.; and,

Fig. l a partial section on the line i-4: of

Fig'. 3, with parts in ay different position.

ln Figs. l and 2l have indicated at 5 a part olf a door trame and at 6 a part of a door which operates in connection therewith. ln l oi the drawing, 7 represents the usual lock mechanism having a latch and lock bolt 8 operatedby a suitable key or a knob 9.

The above construction is old and forms no part of my invention, and in practice, l employ in connection with the lock 7 a supplominital looking` mechanism l0, comprising a striking plate 1l, which is ap-Y proximately et' angleiron form, one flange l2 et which is secured to the door trame by screws lfz and the other flange lll of which extends at right angles to the door traine.

The flange olf the striking plate ll is provided adjacent to the lower end thereot` with a rectangular aperture l in connection with which the latch and lock bolt 8 oi the lool; Y operates, as clearly illustrated in Fig. 2 The top portion ol the striking plate ll provided with a :forwardly projectingT yokeeshaped bearing` 1G composed ot top and bottom members l? and i8. rlhe member 18 is provided with a downwardly di ected slc ve bearing` i9, the lower end portion oit' wl ch is slotted on opoosite sides as shown at 20 in Fig. 4l. il. bolt 2l is movably mounted in the sleeve 19 and is adapted to pass through the bearing lG, er an aperture 22 in the top member ll" ot' said bearing as clearly illustrated in Fig. f5 of the drawing.

l also secure to the door 6, above the lock 7, a plate 23 having an inwardly and out- Virdly directed. `rectangular head 24: pro ed with an aperture 25, and the head 2d er the plate 23 is adapted to pass into the bei'iring.;v i6 between the top and bottom mem.n

"Tf lltle f "e le l ili' i. anc. i .ioieo as clear y siown in mgs. l to 3 inclusive, and the bolt 2l 1s adapted to pass through the aperture 25 and the head 24:.

flange let thereo; as shown at 26 is a cam device 27 having a comparatively wide back plate 28. The cam device 27 is adapted to move upwardly anddownwardly in the slots 2O in the sleeve Vi9 and to move the bolt 2l upwardly in said sleeve. The cam devi ce 27 and .bolt 2l normally drop into their inoper ative position as shown in Fig. 4 by Ygravity, in which position it will be seen that the back plate 28 'of the cam device 27 closes, or partially closes.J the aperture l5 in the flange le of the striking plate whereby when the bolt 8 passes through the aperture l5, by releasing the knob 9, or in the operation of closing the door, the cam'devioe 27 will be moved inwardly and upwardly into the position shown in' Figsjl; and 3, and the bolt 2l correspondingly moved upwardly from mivoted to the striking plate ll, or the lil() the position shown in lifr. Ll to that shown in Y Fig. 3. ln this last operation it will also be apparent that the bolt 2l passes through the aperture 25 in the head of the plate 23 and the door 6 will be locked in connection with the door frame 5 or the striking the lock .7, or by manipulating the knob9 tok withdraw the bolt 8, which operation permits the cam device 2T and bolt Q1 to drop by gravity and-the door may be opened.

It will be apparent that my improved lock construction will more securely lock the door 6 in connection with ythe door frame and will prevent, or materially complicate the breaking in of the door by the use of jimmies 'or other implements, and by constructing the plate 225 as well as the head 24 thereof and the bolt 2l and striking plate ll comparatively hard metal, the forcing of the door by a jimmy or other implement will almost be impossible without breaking away part of the door frame. By reason of the fact that the latch and lock bolt 8 is constructed of comparatively soft metal, the door is readi ly opened by force, in which operation the latch and lock bolt 8 bends or gives but by employing my improvedv supplemental lock in connection with the lock T, the forcing or breaking in of the door is materially complicated, if not entirely obviated. lt will be apparent that while I have shown certain details of construction for carrying my invention into effect that l am not necessaril limited to these details and changes therein and modifications thereof maybe made, withinV the scope of the appended claims, without departing` from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what l claim as new and desire to secure by Letters Patent, is

l. The combination with a lock, of a supplemental lock comprising a striking plate secured to a stationarysupport, an apertured lock element movable into and out of engagement with said' striking plate, a lock .boltmovably mounted in the striking plate and adapted inone Vposition thereof to pass through said lock element to secure in en- ,gagenient' with said striking plate, means operated by the latch bolt of the first named lock for moving said lock bolt into its operative position, `and means whereby the withdrawal ofl said latch bolt will permit said tion of the striking Vplate being provided with a recess, a lock element secured to the door and adapted to operate in connection with the recess in said striking plate, a lock bolt mounted in and movable vertically in the striking plate and adapted to pass through the recess therein and through the lockV element when in said recess, and a cam device pivotcd to the striking plate in juX- taposition to that part thereof with which the latch and lock bolt operates, the cam member of said cam device being independent of and adapted to Voperate in connection with said lock bolt to move the same into operativek position by said latch and'lock boltY in the operation of closing the door.

3. A door lock construction of the class described comprising an approximately L- shaped striking plate adapted to be secured tothe door frame and provided'at one end portion thei'eof vwith. va pair of members which extend at right angles to said striking plate and which form between the same arecess, the other end portion of the striking plate or one side thereof being provided with an aperture, a cam device pivoted to the striking plate adjacent to said aperture, one of the members in said pair being provided with a downwardly directed sleeve slotted to receive the cam member of said cam device a bolt mounted to move vertically in said sleeve and through said pair of members, said bolt'being moved into operative position by the cam member of said cam device, and-a lock element'secured to the door and adapted to operate in the recess between the members of said striking plate and Vin connectionwith which said bolt is adapted to operate. Y

t. A combination with a lock of a supplemental lock comprising a striking plate secured to a stationary support, an apertured' lock element movable into and out of engagement with said striking plate', a lock bolt movably mounted in the striking plate and adaptedl in Vone position thereof te pass through said lock element to secure the same inengagement withsaid striking plate, and

means independent of said lock boltv and operated by the latch bolt ofy the' firstnamed lock for moving said lock bolt into its oper-v ative position.

`ln testimony that I claim the foregoingV '9th day of December, 1919.

FREDERICK A. NEl/VHALL. Witnesses: g

C. E. il/IULREANY, 'H. E. THOMPSON.

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