US1791029A

US1791029A - Unit lock

Info

Publication number: US1791029A
Authority: US
Publication date: 1931-02-03
Anticipated expiration: 1948-02-03

Description

Feb. 3, 1931. N. B. HURD 1,791,029

Filed Sept. 14, 1929 w mmfgfmmnmmv Patented Feb. 3, 1931 UNITED STATES PATENT OFFICE NORMAN B. HURID, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT UNIT LOCK Application filed September 14, 1929.

The main object of the invention is to pro 7 side in such a construction means whereby o a mechanic skilled in the art from a reading of the following description and an examination of the accompanying drawings, in which Fig. 1 is a plan view of my lock as it will ppear on a door, a portion of the door being shown in section;

Fig. 2 is a view similar to Fig. 1, showing the outside knob and its mounting removed;

Fig. 3 is a front elevation of Fig. 1; and

Fig. 4 is a front elevation of those parts in Fig. 2 shown as remaining upon the door when the outer knob is removed.

I have shown and will now describe one preferred form of my invention, it being unlerstood that various changes and modificaions may be made without departing from the spirit of the invention or the scope of the appended claims.

10 represents that part of the unit lock mechanism which carries the usual bolt 15,

which, in the form shown, is of the latch type. This part of the lock mechanism stands in a suitable recess in the front edge of a door 13. 11 is a face plate for the inner side of the door. This plate 11 has mounted thereon the inside knob 14. 12 is a plate for the outside of the door, which I will term a clamping plate, which plate may be secured to the plate 12 by a powerful screw 16. This screw is entered from the outside of the plate 12, and the threaded end takes into threaded opening in the inside of the inner face plate 11.so that the finish and appearance of the inside plate will not be mutilated by an unneccssary screw hole. The screw 16 causes the Serial No. 392,634.

plates to clamp firmly on the opposite sides of said door, to hold the lock mechanism in operative position. If desired, additional screws 1717 may be used to further hold the plate 12 to the door.

18 conventionally represents a hollow spindle connected with the inside knob 14 and passing through a hole 19 in the door and with which spindle the bolt 15 may be connected by any means well known in the art, the particular form of which means is immaterial to this invention. By turning the knob 14 the bolt 15 may be retracted in the usual way. I

20 represents an outside door knob, which is hollow, to contain suitable key-actuated mechanism 26, and said knob and key-actuated mechanism may be connected with the lock mechanism by any suitable means well known in the art, so that the latter may be operated either by the knob 20 or the key actuated mechanism 26, or both.

21 is an outside face plate on which the outside knob 20 is mounted, so that when the outside plate is applied to or removed J1 from the door it will carry with it the said knob 20. 25 is the usual spindle, which constitutes one of the ordinary means employed for connecting the outside lock actuating mechanism with said lock mechanism. The plate 21 constitutes the outside finishing or escutcheon plate and may be of any appropriate design and finish. This plate 21 is preferably constructed to completely hide the plate 12 when all the parts are assembled, so that the design and finish of the plate 12 is immaterial so far as concerns the appearance of the lock. The plate 21 is secured to the door by means of powerful screws 24-24,

which pass through the lock from the inside of the door, the threaded ends of said screws taking into threaded portions of the plate 21, whereby said plate 21 will be securely held in operative position and cannot be removed excepting access is first had to the inside of the room protected by the lock.

From the foregoing it will be seen that the lock mechanism, minus the outside knob and plate 21, may first be adjusted and applied I to the door in such a manner as to hold the parts fixedly in operative position, so that said parts need not be removed, excepting they need repair or replacement. The outside knob and the key operating mechanism therein are thereafter applied to the door, together with the plate 21, and if for any reason it is desired to change or repair the key actuated mechanism Within the door knob, this can be easily and quickly done by simply 1 detaching the plate 21, which is accomplished by backing off the screws 24. This act does not in any manner change the adjustment or connection of the remaining parts of the lock, which are securely mounted on the door.

I claim:

1. A unit lock, comprising lock mechanism including a bolt, an inside face plate, an outside clamping plate, means for positively connecting said plates to cause them to embrace opposite sides of a door, a lock operating knob carried by the inside plate,

an outside face plate overstanding said clamping plate, means accessible at the indoor side of the lock for securing said outside face 3 plate in operative position, an outside lock operating knob carried by the outside face plate, and key-actuated lock operating mechanism carried by said knob, said outside face plate, knob and key-actuated mechanism beng removable from said other parts of the lock.

2. A unit lock, comprising lock mechanism including a bolt, an inside face plate, a boltoperating knob carried thereby, an outside clamping plate, means for positively connecting said plates to cause them to embrace opposite sides of a door, an outside face plate carrying a knob, in turn carrying key-actuated lock operating mechanism, and means accessible at the indoor side of the lock for securing said outside face plate in operative position, said outside face plate and the parts carried thereby being removable from the other parts of the lock.

3. A unit lock, comprising lock mechanism including a bolt, an inside face plate carrying a bolt-operating knob, an inside clamping plate secured to the inside face plate by means accessible from the outdoor side of c the lock, to cause said plates to embrace opposite sides of the door, an outside face plate overstanding said clamping plate, said outside plate carrying a bolt-operating knob, with key-actuated lock operating means carried Within said knob, with means accessible at the indoor side of the lock for securing said outside face plate in operative position and for releasing said outside face plate to permit the removal of said plate, together v with the knob and key-actuated mechanism carried thereby.

NORMAN B. HUBD.