US112165A - Improvement in portable book-holders - Google Patents

Description

dirti-it hm CHARLES O. MOORE, OF NEW YORK, N. Y.

Letters Patent No.I 112,165,dated February 28, 1871.

IMPROVEMENT IN PORTABLE BOOK-HOLDERS.

The Schedule referred to in these Letters Fatent and making part of the same. Y

I, GnARLns C. Moons, of New York city,in the county of New York and State of New York, have ivented'a new and improved Book-Clamp, of which t-he following is a specilication, reference being had to the accompanying drawing forming a part of this specilication.

Figure I is a proiile View, full size.

Figure 2 is a cnt section, showing the parts in connection as they work.

Figure 3 is a top view of wheel or winding apparatus.

Figure 4 is a view of the center shaft alone.

My invention consists in constructing, ot' wood or other suitable material, two plates, U and L, fig. 1, one to work above the other, of convenient length, width, and thickness; and in,l the center ofthe upper one I make a round hole, A, iig. 2, oi' convenient size, nearly but not quite through, in which hole I iirst place a spiral or eoii spring, B, fig. 2.

.lhcnabove, and resting on the spring, I place a piece ot' suitable metal, C, ligs. Zand 4, made round and attened at one end in the form of a wheel, thin, as shown in iig. 4, with one, two, or more (if necessary) teeth or projecting catches, b b, g. 4, on the upper side of the Wheel portion, while from the center ot' this piece C the metal is extended in the form of a shaft, rst round, and then ending square, in all about two and one-halt'inches, more or less.

Next I construct a metallic wheel, D, figs. I 2 3, of convenient size and design, from the center of which, on one side, I extend a smaller wheel, in the form of a tube or barrel, E, figs. I and 2, a hole through the center ofthe saule of sncient size to permit the shaft O to pass through; and on the edge of the barrel portion ot' Wheel D I form teeth, ff, tig. 2, to the number ottwelve, more or less, ot' the saine size as the catches b b, to match into each other, the catches on shaft C and on barrel of wheel D .having sloping and abrupt surfaces in opposite directions for the purpose of working into each other.- Then I place the wheel D over the shaft C, the barrel portion with the teeth into the hole A, having first attached a string or cord to the barrel portion of wheel D by means 0f a hole in the barrel, and the cordpassed thronghandfastened with a knot inside, or any other preferable mode.

4The cord is 'carried lthrough holes-made in the plates of wood U and L near the ends, and along lengthwise on the under side in a groove or slot cut for the purpose in the plate L'.

Then I form a handle, F, figs. 1 and 2, ot' convenient size andshape, of suitable metallic material, which is constructed with a round piece of the metal, extending in the form of a tube from the under side of the center g, figs. l and 2, the proper length, so when the handle F is fastened', by means of screws, to the plate ofwoorl U, having been placed over the shaft C, the

tube portion g of the handle F will rest on the upper surface oiwheel D, coniining it and the shaltC in their positions.

At a, figs. l and 2, I forma square hole in the handTe F, extending it through the tube portion, which permits the square end of shaft O to be passed through and held from turning round. The shaft O may be moved np and down through the square hole a in the handle F, and the round hole through the wheel D.

The shaft O, when it is inclosed in and passes through wheel D, is made round, that wheel D may be revolved upon it forward and backward and when wheel D is turned round to the right the cord is wound on the barrel of the wheel, which is held from turning back by means ofthe spring B forcing the catches t b ot shalt C into the teeth Jf f, iig. 2, of the barrel of wheel D, the shaft O being held, as before stated, from turning bythe square portion resting in the square hole a in the handle F; and as the cord is wound on the barrel by this process, the under plate L is drawn upward toward the other, confining anything that may be between them. g

When I wishto open the clamp I press on the end of shaft O, extending slightly above the handle F for the purpose, 'compressing the spring B and throwing out of contact the teeth fj; iig. 2, and catches b b, fig. 4, thereby permitting the wheel D to go back freely, and'which is easily done by pulling downward the plate ot' wood L when pressing with the thumb on the end ot' shaft O, holding the handle as in the act ot' carryingu it.

By means of my invention a number of' books, packages, parcels, or a shawl may be easllyI and conveniently clasped, held together, and carried.

Claim. I claim- Ihe shaft O or its equivalent, with one or more catches at b, the tube g, attached or detached, and

square hole a in handle, the handle F, the wheel D, and toothed tube E or its equivalent, the spiral spring .B or its equivalent, incombination with plates U and

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