US 3673605 A
A guard to cover both sides and the edge of a door in the area thereof in which the lock is mounted, the same being adapted to original installation and having particular value in connection with replacement lock sets for modernizing doors the present guard, whether used with original or replacement locks, so covering adjacent door areas as to protect the same and the locks from unauthorized tempering. Also, said guard is formed to cover over mortises and bores of locks being replaced, whether or not such openings are filled in, thereby obviating the need for replacing the door in its entirety.
Claims available in
Description (OCR text may contain errors)
United States Patent Allenbaugh 154] DOOR-LOCK COVER GUARD 1 June 27, 1972 1,483,333 2/1924 'Capece ..70/4s2 Inventor: Allenbauah. L05 s FOREIGN PATENTS OR APPLICATIONS I 1,481,984 4/1967 France ..70/452 1 Asslgnew Louis Martin ai Norwalk; l s 1,011,308 4 1952 France ..70 44a Russell Goebel, Glendale, Calif. part in- 16,818 1898 Great Britain terest to each Primary Examiner-Robert L. Wolfe  Filed. Oct. 14, 1970 y y Jackman  App]. No.: 80,593 Y I  ABSTRACT v 52 us. (:1 ..292/346, 70/451 A guard to cover both sides and the edge of a door in the area 511 Int. Cl ..E05b 9/08 thereof in which t lock is mounted. the same being adapted 58 Field of Search ..292/346, 337; 70 451, 448, to Original installation and having Parliwlar value in connec- 70/450, 452 tion with replacement lock sets for modernizing doors the present guard, whether used with original or replacement 56] References Cited locks, so covering adjacent door areas as to protect the same 1 and the locks from unauthorized tempering. Also, said guard UNITED STATES PATENTS is formed to cover over mortises and bores of locks being I replaced, whether or not such openings are filled in, thereby 2,263,772 I 1/ 1941 Gold ..70/45l obviatingthe need for replacing the door in its entirety.
180,894 8/1876 Leach.... "JO/448 Y 231,608 8/ 1880 Parker "70/448 2Clains,5 Drawing Figures INVENTOR. HOV/4P0 M. 41/ 5/8 5406 BY WM 4770/01 25) 'll m P'A'TENTinJunz? 1912 BACKGROUND OF THE INVENTION l. Field of the Invention Lock hardware, particularly dealing with door locks.
2. Description of the Prior Art Replacement sets for modernizing doors are known and, conventionally, entail retention of the original lock, and replacement only of the front and back trim or escutcheon plates, the lock or reinforcing and finishing plates applied to the door edge and through which the bolt or latch of the lock projects, and the strike plate applied to the jamb in register with said bolt or latch.
Such replacement sets comprise separate elements quite similar to those they replace in that they are items spaced from each other, thereby exposing the front and rear corner edges of the door.
Where, in addition to replacing the above modernizing elements, it may be desired to replace the lock also, the notches, mortises and bores in the door of the original lock cannot readily be concealed, nor can any repairs made to fill in such openings in the door, be properly concealed from view by presently known replacement sets.
SUMMARY OF THE INVENTION To expedite modernizing of doors; obviate the need for replacing doors that, heretofore, could not be rendered fit to mount replacement locks and hardware; to reduce the cost of lock and door modernizing, particularly by materially lessening both the time and labor factors; to render the new installation stronger, guarding the door against tampering; and, generally to improve the appearance of the lock newly installed.
The invention has for its objects to provide a door-lock guard having the characteristics above enumerated.
This invention also has for its objects to provide such means that are positive in operation, convenient in use, easily installed in a working position and easily disconnected therefrom, economical of manufacture, relatively simple, and of general superiority and serviceability.
The invention also comprises novel details of construction and novel combination and arrangements of parts, which will more fully appear in the course of the following description, which is based on the accompanying drawing. However, said drawing merely shows, and the following specification merely describes, preferred embodiments of the present invention, which are given by way of illustration or example only.
In the drawing, like reference characters designate similar parts in the several views.
BRIEF DESCRIPTION OF DRAWING FIG. 1 is a fragmentary edgeview of a door provided with a door-lock cover guard according to the present invention and showing the inner and outer knobs of the lock housed within said guard.
FIG. 2 is a partly broken perspective view of said guard and the portion of the door to which the same is applied.
FIG. 3 is a vertical sectional view, to a reduced scale, showing the guard of FIG. 2 in relation to openings in the door in which a lock is adapted to be housed.
FIG. 4 is a fragmentary side view of a door with another form of lock-accommodating opening or notch.
FIG. 5 is a side elevational view of a modification.
DESCRIPTION OF THE PREFERRED EMBODIMENTS The conventional door 10, according to the type of lock with which it is to be fitted, is provided with openings of various types and at selected locations relative to and in the edge 11 of the door. Such openings may be in the form of a notch 12 (FIG. 4) into which the lock is inserted from the edge 11 in the form of a mortise 13 with relief 14 for a latch or lock plate, in the form of a bore or bores 15 (FIGS. 2, 3 and 5) which may be in communication witha mortise, as in the latter figure, to accommodate cylinders, doorknobs, turn bolts, and the like, and which may include boltor latch-accommodating bores 16 (FIGS. 2 and 3). The foregoing is intended to point out that the openings provided in a door are differently located and formed to suit the design of the lock to be accommodated. Substantially all types of mortise and doorknob locks that had been installed in a door as original equipment, are adapted to be replaced by replacement mortise and doorknob-locks, provided the present guard is used.
It will be clear that if a mortise lock is to be replaced by a different form of mortise lock or by a doorknob lock, the openings 12,13,15, or 16 that remain in the door may not be suited, in size or location, to the replacement lock. In most cases such openings would be required to be plugged up or filled in and new openings formed to suit the new lock. This procedure will save the cost of a new door but only if the lines or seams 17 of such fill-ins are concealed. When doorknob locks are used, such seams cannot be concealed, and, when the design of a replacement mortise lock varies in the positions of its cylinders and/or turn bolts over that of the lock being replaced, such seams 17, in whole or in part, will be ex posed and, even when paintedover, will be visible or may, in time, become visible. Such exposed door areas are also subject to be weakened since they are exposed to tampering.
A vulnerable part of the door is the edge 11 thereof, particularly in the portion through which the latch or bolt 18' operates. This door part, in conventional replacement lock sets, requires a latch plate to cover over any relief 14 there may be in the door. Even with a latch plate, the inner and outer corner edges of the door are exposed whether or not escutcheon or trim plates are used on the opposite faces of the door. Moreover, the transverse and vertical locations of such a latch plate relative to the bolt or latch of the lock, are difficult to be lined up, since said plate and the lock are independently mounted.
According to the invention, whether the lock to be fitted is original equipment or a replacement for modernizing purposes, the lock per se, as represented by the door knobs I9 and 20, is provided with a metallic cover guard 21 having a U- form that comprises a door-edge lining web 22, and outer and inner door-face engaging flange plates 23 and 24. In practice,
such guard is formed of a hard metal, as stainless steel, and is formed to so cover a door in the vicinity of its lockas to prevent tampering with the door with the view of cutting or breaking away parts of the door.
In practice, said web 22 is formed with a depressed portion 25 having a hole 26 that is adapted to be aligned with the boltor latch-accommodating hole 16 in the door and which is preferably provided with taps 27 for screws 28 that secure a reinforcing plate 29 through which the latch or bolt 18 extends.
The flange plates 23 and 24 may be provided with aligned holes 30 and 31, as in FIG. 2 for accommodating the knobs l9 and 20 of a doorknob lock occupying the bore 15 in the door, or with two sets of aligned holes 32 and 33, as in FIG. 5, for accommodating the lock cylinder and the turn bolt of a mortise lock fitted in the mortise 13 of the door.
Suitable screws 34 or other fasteners may be used to secure the guard to the door in a manner that would obviate removal thereof from the outside. The attending hardware, such as the knobs l9 and 20 and their guide elements 35 may follow usual .design for such items.
The guard plates 23 and 24 are preferably rectangular, as shown. The same are formed, regardless of their shape, to
cover the sides of the door between which the lock is housed,
What is claimed is: v
l. A guard to cover the edge and adjacent portions of a door in the vicinity thereof in which door locks of different sizes, depending on the types thereof, are mounted, said locks being each provided with a guard-reinforcing latch plate, said guard comprising:
a sheet metal member integrally formed to have a web adapted to cover the door edge both above and below where the lock is located, and opposite and parallel flange plates extendingfrom the opposite lateral edges of said web and adapted to cover the adjacent sides of the door coextensive with the web, said sheet metal member thereby covering that portion of the door within which the lock is disposed;
means to fixedly secure the mentioned sides of said member to the opposite faces of the door in a manner to'securely retain the guard in lock-covering position, and
said web being formed to have an indented intermediate portion adapted to extend into an edge recess in the door.
the web, in the recess thereof, being provided with an above-mentioned reinforcing latch plate through which the latch or bolt of a lock mounted on the door is adapted to extend.
2. A guard according to claim 1 in which the recess in the web faces outwardly, and fasteners adapted to be applied from the outer face of the web to affix said reinforcing latch plate to the web.