Patent 1,021,343 · Tingley's Locking Clamp · Page 1
UNITED STATES PATENT OFFICE.
LEONARD C. TINGLEY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO
M. A. N. MANUFACTURING COMPANY, OF PROVIDENCE, RHODE ISLAND,
A CORPORATION OF RHODE ISLAND.

LOCKING-CLAMP.

1,021,343. Specification of Letters Patent. Patented Mar. 26, 1912.
Application filed September 6, 1910, Serial No. 580,654. Renewed January 17, 1912. Serial No. 671,567.
To whom it may concern:
    Be it known that I, LEONARD C. TINGLEY, a citizen of the United States, residing at the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Locking-Clamps, of which the following is a specification, reference being had therein to the accompanying drawing.
    This invention relates to locking clamps and refers especially to devices for locking flexible material to rods or bars on which such material is hung.
    The especial object of the invention is to provide means for securing against theft such articles as robes and garments when the latter are left in an unoccupied vehicle such as an automobile.
    Many vehicles, and particularly automobiles, are provided with rods adapted to support robes or other flexible articles, such as wraps and coats. Such a rod is usually attached at both ends to the back of the front seat of an automobile, the straight portion of the rod being supported far enough from said back to permit folded robes and garments to be hung over it. If the vehicle is left standing, such articles are liable to be stolen.
    My invention therefore consists in a lock having jaws adapted to grasp the article and clamp it on the supporting rod, the jaws being then separable only after the use of a key to unlock or release them from their clamping position.
    With these and other objects in view, the invention consists of certain novel features on construction, as will be more fully described and particularly pointed out in the appended claims.
    In the accompanying drawings: Figure 1-- is a front elevation of a clamp or lock embodying my invention. Fig. 2-- represents a section on line 2--2 of Fig. 2. Fig. 3-- is a side elevation of a key shaped to release or unlock the clamp. Fig. 4-- is a perspective view of the device in position, locking a robe on a bar. Figs. 5 and 6-- are detail face views of the toothed disks and their carrying members. Fig. 7-- is a detail, enlarged, of the interlocking teeth of the disks. Figs. 8 and 9-- are side elevations of the upper portions of the two jaws, separated. Fig. 10-- represents a section on line 10--10 of Fig. 5.
    Similar reference characters indicate the same or similar parts in all of the views.
    The two jaws 10, 11, which are pivotally connected by the locking mechanism presently described, are curved and have their outer ends or tips preferably corrugated or formed with teeth as indicated at 12 in Fig. 2 the teeth alternating with each other in the manner of a suture so as to prevent the fabric of the article from being drawn laterally out from between the lips of the jaws.
    The jaw 10 is formed with an integral cylindrical portion thereinafter referred to as the barrel 13, said barrel having one end closed as at 14, said closed end having a key hole 15. The barrel is transversely slotted to receive the ring 16 which is integral with jaw 11. The internal diameter of the portion of the barrel 13 next the bottom or closed end 14 is less than that portion the other side of the slot. The distinguish between these portions, the one of lesser diameter will be referred to as the cup, and the one of larger diameter as the ring 24. In other words, the barrel 13 of jaw 10 presents a cup and a ring separated by a slot in which the ring 16 of jaw 11 fits.
    Fitted in the cup of barrel 13 is a disk 17 having a plurality of recesses in which are mounted springs 18 bearing against the bottom or closed end 14 of the barrel so as to have a tendency to press the disk away from said bottom. Pins 19 engaging recesses in the margin of the disk and the inner wall of the cup prevent the disk from rotating in the cup while permitting it to move to the from the bottom thereof. The face of the disk is formed with a circular series of fine radial teeth 20, and is recessed or depressed inside said circular series. The disk is formed with a key hole 21 which registers with the key hole 15 in the bottom or closed end of the barrel. At one side of the key hole the inner face of the disk is inclined to form a cam face 22 for a purpose presently described. This disk will be referred to as the cam disk. Another disk 23 is fitted in the ring 24 of jaw 10 and ring 16 of jaw 11 and is secured in the ring 16 by one or more pins or screws 25. Said disk 23 has a thickness to occupy both rings, and since the ring 24 can rotate