US184989A - Improvement in book-sewing machines - Google Patents

Description

- 2 Sheets-Sheet 1.

J. 0. SMITH. BOOK SEWING-MACHINE.

Patentqd Dec. 6, 1876.

THE GRAPHIC C(LNM ZSheets-SheetZ. J'. C. SMYTH.

7 BOOK SEWING-MACHINE. No.184,989. Patented Dec. 5,187.6.

THE GRAPHIC COJLY that is actuated by any suitable means.

Unrrnn STATES PATENT Orrron JAMES CRAWFORD SM'YT-H, O15 LYNN, MASSACHUSETTS, ASSIGNOR TO ORIANNA S. SMY TH, OF SAME PLACE.

' lMPROVEMENTlN BOOK- SEWING MACHINES.

Specification forming part of Letters Patent No. 184,989, dated December 5, 1876; application filed March 2'7, 1876.

To all whom it may concern:

Be it known. that 1, JAMES CRAWFORD SMYTH, of Lynn, in the State of Massachusetts, have invented an Improvement in Book- Sewinglvlachines, of which the following is a specification The object of this invention is to sew the folded leaves of books by an eye-pointed needle or needles passed lengthwise through the inner part of the fold. To efi'ect this a guide is formed for the needle within the sheet-holder, and the paper is folded back so that the needle emerges, and a shuttle passes through the loop of thread to interlock the same. The space for the movement of'the shuttle and for the needle to pass. out of the fold of the sheetresults from bending down the folded edge between two of the saw-outs that are made across the fold of the sheet. By this improve. ment the machinery is very much simplified,

and the book-sewing is performed with ease and rapidity. 7

In the drawing, Fig. 1 is a plan of the machine. Fig. 2 is a vertical section, and Fig. 3 is a perspective view of the shuttle, needle, and folded sheet.

The eye-pointed needle to is upon a bar, I), that is reciprocated by suitable means, such as the lever 11 and cam 01 upon the motorshaft e.

The shuttle f is in a raceway, g, and it is moved at the proper time to pass through the loop of needle-thread by the shuttle-driver h, The lever h and cam 70 are shown as the means for moving the shuttle in proper time. These parts and the sewing operations, being well known, do not require further description, except as hereafter contained, and I remark that l have shown one needle and shuttle, but there may be two or more needles upon the same bar, and a corresponding numberof shuttles and raceways and shuttle-drivers.

The sheet is presented by a sheet-holder, l, the edge of which is grooved to form a guide for the needle. It is preferable to employ a number of these sheet-holders attached to an endless belt or chain, m, passing around the pulleys or rollers n, 0, and p, and each sheetholder has a guide-toot, r, sliding in a stationary groove, g, so as to keep the sheetholder in a vertical position, and bring the sheet to the place where the sewing is performed, after which the end of the foot 7 clears the groove q, and the sheet-holder is carried bodily down out of the folded and sewed sheet by the belt as it passes downwardly between the rollers 11. and o, leaving the sewed sheet suspended to be pressed along upon the table or support 0 by the next sheet that is brought up to position by the next sheet holder. The belt or chain, with the sheet-holders, is moved around progressively by any desired mechanism. I have represented the crank 3, connecting-rod 4,'and a clamping-feed, t, similar to that upon a sewing-machine.

The fold at the back of the sheets of paper to be sewed together is cut or sawed at proper places'in the usual manner, and the portions of'the fold through which the needle orneedles pass are held up firmly by the grooved portions 5 of the sheet-holder, and the inter-' mediate portions of the sheet are pressed or bent over (where the notches 6 are in the edge of the sheet-holder) by the sheet-holder pressing the folded part of the sheet into contact with the under side of the shuttle raceway g and the stationary plates '0, as indicated in Fig. 3. In consequence of this way, in which the paper at the fold is bent aside in sections, opportunity is given for inserting the eyepointed needle through the portion of the fold that stands up, and the end of the needle comes out of the fold at the shuttle raceway, so that the shuttle can pass through the loop of thread carried by such eye-pointed needle, and the shuttle is moved freely at right angles to the needle, or nearly so, in 'order to take the loop of needle-thread in the best manner, and this shuttle carries a cord or stout thread adapted to form one of the back cords of the book.

of the forms of sewing are illustrated. Fig. 4

shows the small book-leaves with two sawcnts, one stitch, and a thread or cord in both' saw-cuts. In this case one cord is laid in by the shuttle, the other is laid in by simplyraising the thread at one stitch, so that the needle passes below it, and depressing it at machine relating to the needle and shuttle, so that two needles will be moved simultaneous- 1y toward and from each other, and there will be twoshuttles. In 6 a similar kind of sewing is represented to that shown in Fig. 5;

' but in addition two central incisions are made in the back, and a strip of parchment, tape, or other suitable material is applied, the same being in the machine beneath one of the metal strips '0, so that the strip of parchment is depressed enough for the needle to pass over it. The strip/v either terminates near the needle or is bent up to allow the needle to pass betweenit and the strip.

It will be evident that two or more needles can be used on one needle-bar with 'a corresponding number of shuttles in instances where the spaces between the sewed sections are wider than the sewed sections, as indicated in Fig. 7, so that there will be room for the movement of the needles in the sections of the back that are folded or bent back, as shown.

A loopermight take the place of a shuttle,

or the shuttle might be revolved instead of reciprocated; and it is to be understood that only one sheet-holder might be employed, having the necessary hp-and-down motions to present the sheet; but it is best to use the belt, because it gives more time for adjusting the sheet to place while the sewing of the previous sheet is being performed.

1 claim as my invention 1. The combination of a sheet-holder, having a grooved and notched edge, with a plate, 01, to bend the paper of the sheet aside in sections, and an eye-pointed needle and sewing mechanism, substantially as set forth.

2. In a book-sewing machine, the combination of a reciprocating needle, a shuttle carryin g a thread or cord, 2. sheet-holder with a grooved edge, and an endless belt to move such. sheet-holders successively to the point of sewing, substantially as set forth.

3. The sheet-holder land belt m, in combination with a foot, 7, and guideways q, to re" tain the sheet-holder in a vertical position, substantially as set forth.

at. The combination, in a book-sewing machine, of mechanism substantially as described, for bending the cut section of the back aside and passing the sewing-needle into one end and out of the other end of the standing portion of the fold, substantially as set forth.

8Signed by me this 21st day of March, A. D.

J. c. SMYTH.

Witnesses:

NATHAN M. HAWKES, D. M. SMYTH.

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