US378985A - smyth - Google Patents

Description

(No Model.) Y* 4 Sheets-Sheet 1. D. MCO. SMYTH.

.BOOK SEWING MACHINE.

Patented Mar. 8, 1888.

(No Model.)

4 Sheets-Sheet 2. D. M00. SMYTH.

- BOOK SEWING MACHINE.

& .M GO

W. ,y 6. w. L4 M m "rn .d 7% e a d N (No Model.) 4' Sheets-Sheet 3.

13.1808. SMYTH.

. BOOK SEWING MACHINE. Y No. 878,985. f Patented Mar. 8, 1888.

(No Mode1.) 4 Sheets-Sheet 4.

D. MCG. SMYTH. BooK SBWINGMAGHINE.

No. 878,985. Y Patented Mar. 6,1888.

y the machine.

Ntra ES PATENT Orme.

DAVID MOCONN ELL SMYTH, OF HARTFORD, CONNECTICUT, ASSIGNOR TO TUE SMYTH MANUFACTURING COMPANY, OF SAME PLACE.

BOOK-SEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 378,985', dated March 6, 1888.

Application filed August 2i, 1887. Serial No. 248.004. (No model.)

To aZZ whom it may concern.-

Be it known that I, DAVID MCCONNELL SMYTH, of Hartford, in the county of Hartford and Stat-cof Connecticut, have invented an Improvement in Book-Sewing Machines, of which the following is a specification.

The object of this invention is to sew the folded signatures by reciprocating eye-pointed needles, each of which carries a thread and enters one of the end saw-cuts of the signature, and the thread is looped around a vibrating bodkinthat is within the second sawcut from the top or bottom end of the signature, thereby 'detaining around said bodkin the successive loops of thread, and a cord or tape is threaded into the bodkin and drawn through the loops of thread in the signatures in the act of lifting the sewed Volume off the bodkins.

In the drawings,'Figure 1 is a plan view of Fig. 2 is an elevation. Fig. 3 is a sectional plan view below the lineaqw, Fig. 2. Fig. t is a cross-section at the line y y, Fig. 1. Fig. 5 shows the back of a book with the signatures sewed together, and Fig. 6 is a perspectiveview illustrating the manner in which the paper at the back edge of the signature is cut and bent up atan inclination.

The posts A of thel machine are connected by the horizontal bars B, and B are the crossbars to the back-frame C. The main drivingshaft D is supported in bearings upon the horizontal bars B and C. This shaft D is driven by suitable power, and at the end thereof is a cam, E, that acts upon the roller 2 of the rocking lever F, and from the ends of this rocking lever are rods G, connecting to the lever.- arms G', pivoted at 4 to one of the horizontal. frame-bars B, and at the upper ends of these lever-arms are connections to the sliding needlebars H in bearings 5 upon the frame, and these needle-bars carry the needles I, which are in line with the centers of the needle-bars, and upon the frame is a bracket-guide, K, perforated for the passage of the needle and slotted forthe reception of the swinging sheet-holding arm L. The spring 12 acts upon the rocking lever F. to keep the roller 2 toward the cam E, and causes the needles to pass into the folded signature in performing the sewinge 'The needle-bars and needles are reciprocated at the proper time by the mechanism aforesaid, and the sheet-holding arm L is swung around horizontally by the vertical shaft Z, gear-wheel 6, rack 7, and a lever-arm, 8, pivoted at 9, and having a curved slot in it for the passage of the crank-pin 10, that projects from the face of the cam E. 'The shape of this curved slot is such that after the sheetholding arm has been swung around to place it will remain stationary during the time that the crank-pin is traveling in the arc of a circle that forms the curved part of the slot, and during this time the sewing operation is performed, as hereinafter described.

The bodkin-holder N receives the vertical bodkins n, and these are guided at their lower ends by the stationary plate 13 upon a bracket from the frame of the machine, and the vertical slide-bar O of the bodkin-holder passes through the same bracket and is also guided at its lowerl end in a projection upon the crossbearer C2. The bodkin-holdcr and its slide receive a vertical reciprocating motion at the proper time by any suitable means. I have shown the arm Q2 pivoted at land connected at the other end to the slide-bar O and acted upon by the edge of the cam E, and the parts are so timed that the eye-pointed needles enter the folded signature and the eyes of such needles pass beyond the bodkins, and then the needles draw back slightly and the bodkins rise and pass through the loops of needlethreads and hold such threads while the needles draw back. This operation is performed in each signature until the proper number of signatures have been united together and are to be removed as a volume, which is done by hand after cords or threads have been inserted through the eyes at the upper ends of the bodkins, so that the cords or threads are drawn into the saw-cuts and into the loops of threads ICO The table may be countcrbalanced by a spring; but I have represented a sheet-holding platform, Q,with a sliding column, Q', that is connected bythe walking-beam Q to the stand* y varm L passes into the notch in the bracket K at the time the sheet is brought up to position for being sewed and the folded back edge of the signature is adjacent to the gages 14 on the frame B, and it is preferable to employ, in addition, the springgages 15, the lower ends of which are slightly below the eyepointcd needle, and these gages yield laterally as the needles pass into the fold of the signature and prevent the needle becoming bent when the papel' of the signature is thick or when the number of leaves included in the signature is great.

The edge ot' the sheet-holding arm L is grooved forthe passage of the reciprocating needles, and it is also notched at the places where the loops ci' needle-thread are thrown out vfor the bodkins to pass through, as aforesaid.

Upon the horizontal bar B are brackets 16, forming bearings for the rockshaft R, and to this a slight movement is given at the proper time by a Cam upon the shaft D, a lever, Rf, rock-shaft It, coiineetingrod 17, and cranle arm 18 on the rock-shaft R, the spring It serving to hold the arm It' toward the cam.

rIlhe arm S, fastened upon the rock-shaft It, extendsontto thepresserbar S, which presserbar is notched to allow the bodkins to ascend through the loops of needle-thread and to project above the sewed signature as the presserbar is pressed upon the sewed signatures, causing them and the table P to descend. rIhis rock-shaft is moved in the other direction by the action of the spring R3 and raised sufficiently for the arm L to swing in beneath it and present a new signature in position for being sewed.

I make use of another rockshaft, T, in the bracket 1G, from which extend the lingers t, and these fingers act at their outer ends upon the top and bottom portions of the back of the folded signature to press these portions of the paper beyond the end saw-cuts downwardly and out of the way of the reciprocating needles, so that such needles will enter the folded back of the signature at the end saw-cuts, and in order to move the rock-shaft T and ingers t, I have represented the crank-arm 20 connecting rod 21, shaft and crank-arms 22 23, and link 24 to a rocker, T2, against which the crank-pin 10 acts to give the slight movement necessary at the proper time. It is preferable to make the iingert sufficiently strong tor the edge thereof thatis adjacent to the sheet-holding arm at the end of the notch therein to act as a shearand cutthepapcrthrough the folded back and bend thev paper down and out of the way of the looper or needle. unnecessary to saw the signatures at the places where the needle passes in or emerges.

The spools of thread are upon suitable supports, and the threads pass through the guideeyes n and thence through the eyes of the needles, and the sewing as performed by this machine is illustrated in Fig. 5, wherein cords 30 are shown as having been drawn through the loops of thread by the bodkins, and the thread y passes out from one signature into the next at the end sawcuts.

In consequence of the arms L swinging over and beyond theplatform Q this machine may be partially automatic in the feedingin of the signatures. The vertical detainers 31 are stationary, and vthey pass through holes in the platform, and the backs of the signatures, as theylie in a pile upon the platform Q, are against these detainers, except the top signature, which is above the tops of these detainers, so as to be carried off by the arm L as it swings and passes into the fold ofthe signature and conveys it tothe place where it is sewed. The table P is forced down thethickness of one folded signature, and theplatform Q is raised to the same extent, thereby bringing another folded signature above the top ot' the vertical detainers 3l.

In this machine I am also enabled to feed the sheets vin and with but little personal at tention by placing the successive sheets over the table l? between the vertical gages 33 on the presser-bar S and the vertical gage 34 upon an arm, 35, supported by the standard 36. This arm 35 is sufficiently high to allow the sheet-holdcr to swing in beneath it, and the signatures are printed so that when folded one margin is wider than the other. The narrow margin is placed downward and the wider margin rests upon the spring-plate 37, so that the arm L swings in to the middle of the signature, as seen in Fig. 4t, and carries the same This renders it IOO IIO

in beneath thepresser-bar when that has been raised. be thus piled between the gages 33 and 34, and they vill rest upon the plates 37, and the lowest one in the pile will hang in an open position to receive the swinging sheet-holder, which passes into the signature and carries it in beneath the presser-bar to the sewing mechanism.

I claim as my invention- 1. The combination, in book -sewing machines,with the reciprocating eye-pointed needles, of looping-bodkins, a holder for the bodkins, and mechanism for reciprocating the same and passing the points ofthe bodkins into the loops of needle-thread within the signature and holding suchloops ot' thread while the needles are withdrawn, substantially as set forth.

2. The combination, in a book-sewing machine, of reciprocating eye-pointed needles, looping-bodkins, mechanism, substantially as More than one sheet at a time may k.

aveces 3 set forth, for actuating the parts, a table for supporting the signatures while being sewed, and a presserbar for Yforcing down the sewed signatures and table, substantially as set forth.

3. The combination, in a booksewing Inaohine, ofaswinging sheet-holding arm, a wheel and rack for actuating the same, reciprocating eye-pointed needles, looping-bodkins and mechanism for moving the same, a presser-bar, a roclcshaft for actuating the same, and fingers forpressing down the end portions of the folded signature at the back edge, and needleholders, and needles for passing into the fold of the signature, substantially as set forth.

4. The combination, with the reciprocating eye-pointed needle and looping-bodkins and mechanism for moving the same, of a table to support the signatures while being sewedfa presser-bar for forcing down the sewed signatures and table, a platform for holding the uni sewed' signatures, and ,a walking-beam connecting the platform and the table, so that the platform and unsewed signatures are elevated by the depression of the table as` the sewed signatures accumulate thereon, substantially as set forth.

5. The combination, in a book-sewing machine, of mechanism for sewing the signatures, the swinging sheetholding arm for receiving and conveying the signatures to the sheet-sewing mechanism, vertical gages between which the sheets to be sewed are to be placed, an arm for holding two of the gages and below which the sheet-holding arm swings, and plates for sustaining one edge of the folded signature to allow such signature to hang for the sheet` holding arm to swing into it, substantially as setforth.

6. The combination, in a book-sewing machine, of reciprocating eye-pointed needles and their needle-bars, a sheet-holding arm grooved uponits edge for the passage of the eye-pointed needles, and being also notched, loopingbodkins, mechanism for supporting and reciproA eating the same, fingers for pressing down the paper at the fold of the signature at the end portions of the back, and a presserbar and mechanism, substantially as specified, for giving motion to the respective parts to carry in the sheet and perform the sewing, substantially as set forth. l

7. The combination, with the sheet-holding arm provided with a notch, in a book-sewing machine, of a moving finger that acts as a shear by engaging the edge of the said notch in the arm to cut the fold of the paper and bend the paper aside for the passage of the needle, substantially as set forth.

Signed by me this 10th day of August, A. D. 1887.

DAVID MCCON NELL SMYTH.

Witnesses:

- Gao. T. PINCKNEY, WILLIAM G. Morr.

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