US283495A - lambie - Google Patents

Description

2 Smeets-sheet 1.

l (maar.) R. M. LAMBIE.

BOOK HOLDER.

Patented Aug. 21, 188.3.

2 Shets--Sheet 2f (Model.)

R. LAMBIB.

BOK HOLDER.

No. 283,@5. Patented Aug. 21, 1883.

' view of the upper portion.

UNITED STATES PATENT OFFICE.

ROBERT M. LAMBIE, O F NEW' YORK, X. Y.

BooK-HOLDER.

ySPEL'II-`ICA'1.I')N forming part of Letters Patent No. 283,495, dated August 21, i883, Application filed July Q4, 188i. (Model.) Patented in England August lo. D82, No. 3,918.

and useful Improvements in Boolr-Holclers and I do hereby declare that thcfollowing is a full, clear, and exactA description of the same. My invention relates to an apparatus for holding a dictionaryor other `large volume sov that it may be readilyr opened for reference, and as readily closed, and held Vso as to be protected-from dust and exposure. y

The accompanying drawings represent an apparatus embodying my improvements` Figure 1 is a perspective View of the apparatus in position for use.l Fig.`2 is a side Fig. 8 is an end view of the same. Figs. 4 and 5 are detail views.

The working parts of the apparatus are supported by an adjustable standard and a folding lee-frame. The standard consists of a rod, A, having at its upper end a socket, a, for the reception of a pivot, and a set-screw,

' for seouringthe pivot vwhen in the socket.

The legs B are` of metal, and any number may be employed. As here shown there are three. The upper partof each leg is formed into a shank, b, from twojopposite sides of which extend two pivots, b2, cast with the leg and shank. vAbove these pivots, when the legs are in place, the shank is vertical, and

' the portion. ofthe leg below the pivots is curved outward in any suitable form. Three or more legs are placed together to form a leg-frame by passing the pivots b2 Vupward into a pear-shaped sleeve, (l, through slots radiating from the central aperture, and then inserting the standard A between them. The pivots have bearings in a groove, c, running around the interior of the largest portion of the pear-shaped sleeve C, and the Shanks b rest against the outside of said sleeve, where they are held in place by a ring o r band, E, of the shape shown in Fig. 5, which is slipped over them, as shown in Figs. l and 4. The sleeve C is provided with a thumb-screw, e, for holding the standard A in place at any desired height. Then the ring or band E is removed from around the Shanks, the legs are free to swing toward each other, as indicated by dotted lines in Fig. 4, so that the legs and standard may be packed in a small space.

The book-holder consists of a' central baseboard and two adjustable swinging or folding boards. To the baseboard F is attached a skeleton plate or frame consisting rof a quadrangular portion, (l, secured to the bottom ofY the board by screws, and' two seinicircular braces, G2, extending from the bottom of said qnadrangular portion and crossing each other at right angles. V

From two opposite sides ofthe frame, in line with one ofthe semi circular braces, extend two arms, G3. rangular portion G, in line with the arms G3, are two semicircular depressions, g, which form bearings for the ends of two arms, H, entend-` ing laterally from a bifnrcated vertical post, J, the lower end of which is formed into a tapering pivot, i, having a peripheri cal groove around it. The arms H extend 'from one ofthe branches ofthe bifurcated post, and the other branch is provided with a set-screw, j. Between the two branches of the bifurcated post works one of the semicircular braces G2. andr the point of the set-screw j engages lwith In the upper surface of the qnad-V notches or depressions g2 in the surface of said brace. By this means the base-board F may be made to swing from a horizontal to a nearly vertical position, and is held in place in either of said positions or any intermediate position by means of the set-screw j and depressions g2.

The adjustable swinging or folding boards are connected to the base-board F in the Vfollowing manner: To the back of each board K of two arms extending laterally from a T- shaped plate or bar, M. The end of the main bar of the piece M is formed into a tube or sleeve, m, and provided with a set-screw, fn- The tubes or sleeves mtit on the arms G3, above described, and are secured by the set-screws n, and by this means the boards K are hinged to the base-board F, so that they may be made to swing from a vertical to a horizontal posi- IOO tion after the manner of opening and closing a book.

The book is held by resting it on the baseboard F and swinging boards K, as shown' clearly in Fig. 8, and by means of the tubes or sleeves m and set-screws n the boards K are adjusted toward or from each other to accommodate, books of different thicknesses. The lower edges of the boards K are provided with cleats k, to prevent the book from slipping when the boards are inclined from a horizontal position. These cleats are provided with dowel-pins engaging with holes in the boards, so that they may be readily placed in position and removed at pleasure.

In order to'hold the boards K in place with a book either open or closed, but more especially when the book is closed between the boards, the following devices are employed: A bar, P, has at one end a lateral arm, p,which works in bearings consisting ofuiotches in the plate or bar L. A wire spring, Q, is wound around the arm p, with one end ofthe wire @bearing against the plate L, and the other end pressed upward.

engaging with a horn or projection, p2, on the arm p, with a tendency to keep the bar P The outer end of the bar P is bent at a right angle to the direction ofthe arm p, and is formed into a hook, p, which engages with an arm, mi, projecting laterally from the tube or sleeve m.4 Vhen the bookY is closed, the tendency of the springs Q to raise the bars P causes said arms to press against the boards K and hold them firmly against` the book, so as to keep it closed. The upward motion of the bar is limited by the engagement of the hook p3 with the arm mi. Vhen the book is to be opened, the hooked arm p3 slides overthe arm m2 and lies against the back of the board K, as shown in Fig. 3;

Referring to Fig. l, R represents a bar provvided with two claws, r r, and a set-screw, S, by which means the bar may be attached to the standard A. The outer end ofthe bar is provided with a socket, V, for the `reception of a pivot, by which means a desk attachment such as that shown in my patent of August 9,

plates secured on the horizontal arms, and

provided with upward-extending` stop-arms, and a locking-bar pivoted to each of the hinged plates, adapted to engage the upward-extending stationary arms when the hinged boards are brought to a verticalv position in closing the book, and to slide freely thereon when force is applied to open the same, substantially as described.

2. The plate or bar M, formed with the sleeve m and arm fm?, and provided with set-screw n, and the supporting-arm G, in combination with the plate or bar L and bar P, substan tially as shown and described.

3. The co1nbination,with the swinging board K, the T- shaped plate or bar L, the T- shaped plate or bar M, hinged thereto, and provided with the arm mi, the sleeve m, and supportingarm, of the bar P, formed with the hooked arm p, and arm p, provided with spring Q, as shown and described.

4. The combination of the adjustable standard A, sleeve C, provided with slots, as described, and the recess or groove c, with the legs B, provided with pivots b2, adapted to be retained in the recess or groove c by the presence of said standard A, the upward-extending shanks b, and band E, adapted to fit over said Shanks b, substantially as shown and described.

R. M. LAMBIE.l

Vitnesses:

' E. R. BROWN,

DANIEL SicKELs.

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