US1025724A - Book-lock. - Google Patents

Description

HQ 1). SNYDER.

BOOK LOOK.

APPLICATION FILED 00'I'.28, 1909.

Patented May 7, 1912.

UNITED sTArEs PATENT omen.

HARRY D. SNYDER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WILLIAM,

MANN COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

Specification of Letters Patent.

:eooK-LocK.

Patented May '7, 1912.

Application filed. October 28, 1909. Serial No. 525,220

To all whom it may concern:

Be it known that I, HARRY D. SNYDER, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented. certain Improvements in Book-Locks, of which the following is a specification.

The main object of this invention is to provide means for locking a book so that access cannot be had to the leaves.

A further object is to make an adjustable locking mechanism so that it can be applied to a loose leaf book in which the leaves between the covers vary in number.

My invention, while particularly adapted for use in looking a book so that access cannot be had to it, may be used also for look ing the leaves of the book to the cover.

In the accompanying drawing: Figure 1, is a perspective view of a blank book illustrating my improved lock in position; Fig. 2, is a sectional view on the line 22, Fig. 1; Fig. 3, is a perspective view of the lock detached; Fig. 4, is a view showing the lock applied to the back of the book; and Figs. 5 and 6, areviews of modifications.

A is the back of one form of loose leaf book, B, B are the covers hinged to the sections a, a of the back at b, In respectively, and c, c are the leaves, the number of which may be increased or diminished, as desired. The sections a, a of the book are made to move toward and from eachother and are secured in the present instance by a suitable look a.

While I have shown my invention applied to a loose leaf book, it will be understood that it can be applied toa permanently bound book without departing from the essential features of the invention.

In the present instance secured to the cover B is plate D recessed at cl to receive the flanged head 6 of the part E of the look. This part forms the casing of the lock and has the usual spring-pressed tumblers c, illustrated by dotted lines. Swiveled in the casing is the hub section E which is free to revolve in the part E, and in this hub-1s a key-slot 6 to the screw threaded sleeve or spindle E The hub section E is secured by a'pin e in the present instance, so that the threaded sleeve turns with the hub.

F is the bolt section of the lock comprising a stem having a T-head f adapted to a socket g in a plate G mounted in the cover B of the book, and has, preferably, a squared shank f adapted to a corresponding opening in the plate. The end f of the stem F is screw threaded and is adapted to the threads in the sleeve or spindle E so that on turning the sleeve the two covers will be drawn to-wardeach other.

Both sections of the lock may be removed from the cover so as to allow perfect freedom in turning the leaves of the book, and. can be readily applied by simply mounting each section in the socket and placing the key I in the key-way e of the hub E and turning it so as to cause the sleeve E to engage the threads on the bolt F, and this action draws the covers tightly onto the leaves, and when they are drawn to the position desired the key is withdrawn and the bolts or tumblers of the lock engage the'hub E and prevent the hub turning. Thus in the present instance, the key I acts as the selective means to effect the proper combination for the lock to free and allow movement of the member E and also acts as a lever for turning the said member E However, it will be understood thatany form of selective means can be used without departing from the spirit of the present invention.

Both theflange e and the T-head are so embedded in their plates that both the covers will be smooth. In some instances one of the parts may be hinged to the cover as shown in Fig. 6, in which the bolt- F is hinged to a plate G on the cover.

While I have described the invention particularly as applied to the open end of the book to secure the covers together in order to prevent the opening of the book, it may also be used at the back of the book, binding the leaves to the book, as illustrated in Fig. 4, the lock being similar in all respects to that illustrated in Fig. 3, with the exception that the parts are adapted to enter the covers being hinged, as shown, so that the book can be readily opened without in terfering with the lock for fastening the leaves together. The advantage of this form of lock is that the leaves of the book cannot be removed without the lock is first released.

In Fig. 5, I have shown a modification in which the bolt F is in the form of a sleeve having an internal screw thread, the said bolt having a head which is adapted to a socket and is so shaped as to prevent the bolt turning in the socket. The hub E of the lock E carries an extension E in this instance which enters the threaded opening in the bolt F.

While I have shown the shank f of the bolt squared to fit a square opening in the plate Gr, it may be of any shape which will prevent it turning in the plate. The bolt may have a perfectly round head when used with a squared shank, or, if the T-head is used, the shank may be round depending upon the strength and thickness 01": the cover of the book.

I claim:

1. The combination in a book of the two covers; a threaded spindle movably mounted in one coveradjacent the opening end of the book; a. series of tumblers; means for moving the tumblers into engagement with the spindle to lock the latter to the said cover; a threaded stem secured to the opposite cover and engaging the threaded spindle; means for moving the tumblers to permit movement of the said spindle; said latter means serving as a lever whereby the said spindle may be turned to vary the distance between the two covers.

2. The combination in a book of the two covers; leaves mounted between the covers; means for drawing the covers together so as to bind the leaves and prevent their withdrawal; said means consisting of a lock and two members; one member being movable with respect to the lock and adapted to engage the other member; said movable member also having a key slot formed therein adapted to receive a key for actuating the lock; said movable member serving when the key is inserted and turned to adjust the relative position of the'two covers and serving when the key is removed tolock the several parts.

3. The combination of a book having a socket in each cover near the outer edge, a two-part locking device, one part consisting of a casing and rotatable stem mounted in the casing, a threaded sleeve carried by the stem, locking mechanism in the casing arranged to engage the stem said mechanism being displaced by the insertion of a key so as to leave the stem free to turn, the other part of the lock being in the form of a bolt having a screw threaded stem adapted to the threaded sleeve of the other part of the lock, both parts being shaped so as to prevent their turning in their sockets so that the covers of the book can be drawn together by the locking mechanism when the key is inserted, and when the key is removed the two-parts of the lock will be prevented from turning one in respect to the other by the engagement of the locking mechanism with the stem of one part.

4. The combination of a book, plates providing sockets in the opposite sides of the book, a lock casing in non-rotative engagement with one of the sockets, a rotatable spindle journaled within said casing and having a screw threaded extension, anonrotative bolt section adapted to the socket in the other side of the book and having av threaded stem arranged to engage the threaded extension of the spindle, and means within the lock casing for locking the rotatable spindle to the lock casing.

5. The combination in a book lock, of a lock casing attached to one cover of a book, locking mechanism carried thereby, a hub rotatably mounted in the said casing and arranged to be locked to the lock casing by the said locking mechanism, a sleeve connected to the hub so as to turn therewith, said sleeve having a screw threaded section, and a bolt attached to the opposite cover of the book and having a screw threaded stem adapted to the screw threaded sleeve.

6. The combination in a book, of plates providing sockets in the two sides thereof, a lock casing mounted in one socket and so shaped that it will be prevented from turning therein, locking tumblers carried by the said casing, a hub rotatably mounted in the lock casing and having apertures for the reception of the said tumblers, said hub having a threaded extension, with a bolt having a head mounted in the socket in the other side of the book and shaped so as to prevent it from turning therein, said bolt having a screw threaded section adapted to the thread of the said extension, the extension being free to turn on the insertion of the key in the lock and prevented from turning by the tumblers when the key is removed.

7 The combination of a book, a plate providing a socket in one cover of the book, a lock casing adapted to the said socket, looking mechanism carried by the said casing, a rotatable hub also carried by the casing and arranged to be engaged by the locking mechanism, said hub having a key slot therein and a threaded extension, a bolt section carried by the other cover of the book and having a threaded stem arranged to be engaged by the threaded extension .of In testimony whereof, I have signed my the other section of the look so that as the name to this specification, in the presence 10 key is inselrted the hub will be disengagebd of two subscribing Witnesses.

from the ockin mechanism and ma e turned by the key to draw the covers oi? the HARRY SNYDER book toward or from each other, and on the Witnesses:

removal of the key the locking mechanism WM. E. SHUPE,

will lock the hub to the casing. WM. A. BARR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, I). G.

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