US536659A

US536659A - Book-lock

Info

Publication number: US536659A
Authority: US
Publication date: 1895-04-02
Anticipated expiration: 1912-04-02

Description

(No Model.)

B. E. ROGERS. BOOK LOOK.

No. 536,659. Patented Apr. 2, 1895.

@0' I" @meak \QA .(wu ex s, :5 0% o%&. 6% km NITED STATES PATENT Priest BOOK- LOCK.

SPECIFICATION forming part of Letters Patent No. 536,659, dated April 2, 1895.

Application filed December 18, 1894. Serial No. 532,257. (No model.)

To all whom it may concern.-

Be it known that I, ERNEST E. ROGERS, a citizen of the United States, residing in the city and county of NewLondon, State of Connecticut, have invented certain new and useful Improvements in Book-Locks, which improvements are fully set forth and described in they following specification, reference being had to the accompanying drawing.

The object of this invention is to provide a simple, strong, cheap and serviceable lock for books which, while effective when in use, may be removed'when no longer needed and may also be adjusted to, and used with, books of various sizes.

It is frequently desired to use books of accounts in public places where the contents of the same are exposed unless provided with some form of protection. Most commonly such books, after use, are placed in a safe or in a vault until again called into use. My present invention makes it possible to leave such books in exposed places, as for example on desks in offices, or on counters in stores, with perfect safety.

Toexplain the said invention more clearly I have provided the annexed drawing which illustrates, in perspective, a book having my improved locking device attached thereto. Referring now particularly to this drawing the lettera denotes a strip of thin sheet metal or like material, bent as shown into substantially the outline of an equilateral triangle. At a point forming one of the angles of said triangle the ends of strip a are linked to-' gether by means of a ring I). Said ends are secured to the ring I) by being passed therethrough and then folded back and secured to the strip a by means of rivets a, as will be readily understood. At each of the other two bends of strip a is a ring 1), similar to the ring b, thus providing a ring at each angle.

In assembling my device two of the triangles provided with rings as described, are re quired and the same are secured together by means of chains or the like flexible articles, in such manner that each ring bb' of one triangle will be secured to its corresponding ring of the companion triangle. It will now be seen that the rings bb are arranged in three pairs, as follows:one pair of the rings 27 and two pairs of the rings 1). To connect said triangles as above mentioned I have se= vcured to one ring of each pair of the rings I), both ends of a chain c which latter also passes through the ring I) which is the companion of the ring to which the chain ends are attached. It will now be readily seen that the chains 0 and rings I) serve to fasten together the two triangles a. Said triangles are further secured together by means of a chain 61 one end of which is fastened to one of the rings 1) from which said chain passes to the companion ring b. To secure chain (1 to the last mentioned ring said chain is passed therethrough andthen turned back upon, and secured to, itself, by means of an ordinary padlock e the hasp of which passes through the links of the chain as shown.

When it is desired to use my device in connection with a book the triangles a are first placed on each side thereof. Each chain c is capable of forming two loops and when the triangles are in the position above mentioned the loops of one chain are arranged to pass across the top and front edges of the book andthose of the other chain across the bottom and front edges, the said loops of each chain when thus in position being substantially at right angles to each other. The chain (1 secured to one of the rings 1) is now passed from said ring around the back of the book and through the companion ring b, thus drawing the triangles rearwardly and correspondingly tightening the loops of the chains 0. When the Various parts are drawn together as tightly as desired the chain d is secured to itself by means of pad-lock as already fully explained.

When the various elements are in the positions just described it will be understood that any attempt to open the book would be unsuccessful. The book is therefore securely locked and cannot be opened without first releasing the chain (1.

Because of the particular manner of securing the chains 0 to the rings 19 the loops formed by said chains need not be of the same size, as said loops will readily adjust themselves to accommodate books of varying sizes.

While I have shown my device as provided with triangles having rings mounted thereon I do not wish to be understood as confining myself to thisparticular construction as it is evident that a fiat piece of metal could be as well employed having holes cut therein corresponding to the rings b-b' thus dispensing with said rings entirely and it Will also be evident that other devices might be substituted for the chains employed but the complete device is shown and described as of my preferred form of construction.

My device as a Whole may be very cheaply produced. Itisverysiinpleinits construction and operation and when not in use may be packed in a very small compass.

Having now described my invention, I claim A book lock, consisting of two strips of thin materal, each being bentinto a substantially triangular shape and having its ends passed through a ring and doubled back upon itself and secured thereto, a pair of rings loosely 20' of the end of the chain, substantially as set go forth.

ERNEST E. ROGERS.

Witnesses:

CHAS. L. WILLIAMS, W. B. DIBBLE.