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1,373,112. Specification of Letters Patent. Patented Mar. 29, 1921.
Application filed October 21, 1920. Serial No. 418,362.
To whom it may concern:
    Be it known that I, JOHN CLAYTON BACKUS, a citizen of the United States, residing at Smethport, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Check-Locks, of which the following is a specification.
    This invention relates to an improved hat and coat lock and has as one of its principal objects to provide a device of this character the major parts of which will all be formed of sheet metal for thus eliminating the possibility of accidental breakage.
    The invention has as a further object to provide a device of the above described character wherein by forming the parts of sheet metal, said parts will, as compared with cast metal construction, possess superior strength.
    And the invention has as a still further object to provide a hat and coat lock employing a hook, a contacting latch, and a coacting lock bolt, and wherein the bolt will bear against the latch for holding the latch against pivotal movement and will also project through the latch for bracing the latch against sidewise movement.
    Other and incidental objects will appear hereinafter.
    In the drawings:
    Figure 1 is a perspective view of my improved hat and coat lock,
    Fig. 2 is a side elevation of the device,
    Fig. 3 is a fragmentary front elevation partly in section to illustrate the mounting of the head upon the hook employed,
    Fig. 4 is a fragmentary perspective view showing the manner in which the hook and head are formed so as to mate,
    Fig. 5 is an elevation showing the cover plate of the casing removed,
    Fig. 6 is a perspective view showing certain parts of the device disassembled, and
    Fig. 7 is a detail section showing the mounting of the rack employed upon the lock bolt of the device.
    The lock casing as well as the lock mechanism per se. as disclosed in the present instance, is substantially identical with the showing of Patent No. 920,105, issued to me May 1, 1909, and I shall accordingly now describe the casing and said mechanism only generally. As will be observed, the casing includes a back or base plate 10 having top and bottom forwardly directed flanges
11 while from the side margins of said plate extend rearwardly directed vertical flanges 12 having lateral ears or flanges 13 apertured for receiving suitable fastening devices for securing the casing to any suitable support. Closing the casing is a front cap 14 having side flanges 15 on which are formed spaced lugs inserted through suitable openings in the back plate 10 for removably securing the cap in position. Projecting forwardly from the back plate 10 is a pin 16 upon which is pivoted a dog or pawl 17 and coacting with said pawl is a spring 18. Projecting forwardly from the back plate is a second pin 19 over which is fitted a spring 20. Connected to one end of this spring is a link 21 while the opposite end portion of the spring is bent to provide a spring arm 22. Pivoted upon the back plate is a guard 23 pressed by the spring arm 22 into the path of the pawl 17. At its upper end said guard is formed with an extension 24 projecting rearwardly through a suitable slot in the back plate and secured to said plate at its rear side is a guide 25 adapted to freely receive a key check 26. The extension 24 of the guard projects into the path of downward movement of the key check so that said check will, when depressed, first swing said guard out of the path of the pawl and will then engage a trip 27 upon the pawl for swinging the pawl to inactive position and releasing the lock bolt employed. When this occurs the extension will engage in a suitable notch in the key check for locking the key against upward displacement.
    The present invention has to do particularly with the peculiar construction of the hook, latch and lock bolt employed. Heretofore, these parts have been formed of cast metal, principally for the reason that it has been found impossible due to the peculiar shape of said parts, to construct the parts of sheet metal. However, as the cast metal parts proved so unsatisfactory in practical use, said parts cracking comparatively easily and constantly becoming broken, it became imperative to construct the parts in such manner that they would not be subject to these defects. In the present invention, said parts are constructed of sheet metal, it having been found possible to form the parts according to the embodiment of the invention shown. A sheet metal hook 28 is employed. This hook is pressed from a