US250987A

US250987A - Machine

Info

Publication number: US250987A
Authority: US
Publication date: 1881-12-13
Anticipated expiration: 1898-12-13

Description

(ModeL) 2 Sheets-Sheet 1.

D. M00. SMYTH.

BOOK SEWING MACHINE.

Patented Dec. 13,1881.

N4 PETERS PhoQv-Lilhugnphun wzshin lon. n. c.

(Model.) 2 Sheets-'-Sheet 2.

1). M00. SMYTH.

BOOK SEWING MACHINE.

No. 250,987. Patented Dec.13 ,1881.

MM WM %dm?W' f n PETER$ Pham-Lilhogmphur. Washington. m;

UNITED STATES PATENT QFFIGEO DAVID MGCONNEL SMYTH, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE SMYTH MANUFACTURING COMPANY, OF SAME PLACE.

BOOK-SEWING MACHINE.

' SPECIFICATION forming part of Letters Patent N 0. 250,987, dated December 13, 1881.

Application filed May 16, 1881. (Model-,

To all whom it may concern:

Be itknown that I, DAVID MCCONNEL SMYTH, of Hartford, in the State of Connecti out, have invented an Improvement in Book- Sewing Machines, of which the following is a specification.

This invention relates to means for feeding the sheet to the sewing mechanism. The sewing itself may be performed in any suitable manner, and a reference is hereby made to Letters Patent No. 220,312, granted to me October 7, 1879, for a mechanism for sewing books, which may be availed of in sewing the sheets fed to the same by the particular mechanism to which the present invention relates.

I make use of detached sheet-holders that suspend the sheet upon end bearings, and these sheet-holders are pressed up to the place where the sewing is performed, and after each sheet has been sewed the detached sheet-holder is allowed to drop, the sewed bookis moved back, and another sheet and holder are brought into position. The sheets are supplied by the attendant upon the detached sheet-holders and passed successively into place upon the end bearings. This gives opportunity for the feeding to be continuous, and the attendant can accumulate a number of sheets in position to be fed up successively to the sewing mechanism.

In the drawings, Figure 1 is a vertical section, showing a number of sheets suspended ready to be sewed. Fig. 2 is a plan, partially in section, showing the end bearings for the sheet-holders and the means for discharging the sheet-holders. Fig. 3 is a detached view of the means for dischargingthe sheet-holders, and Fig. at is a front elevation of the parts shown in Figs. 1 and 2.

The sheet-holders a are adapted to be passed into the folded sheets, one in each sheet. These sheet-holders are sustained at their ends by the bearing-bars L b upon which they are placed bythe attendant, so that the sheets hang down below these sheet-holders, the weight bein g supported upon the end bearings, b These bearings b may be of any desired length, so that any number of sheets may be suspended upon them by the sheet-holders in the proper order to make up the books and I remark that these hearings may be fixtures upon the booksewing machine, or they maybe connected to gether bycrossbars above the back edges of the sheets, and movable, so that they may be filled with sheets separately from the sewingmachine, and then brought to and placed in the sewing-machine, thus allowing for the sheets being placed carefully in theproperorder, ready for sewing.

If a series of progressively-rotated arms such as those shown at c e in my aforesaid 6c patent-is made use of in the book-sewing machine, then the sheet-holders a will only require to be rods of metal, and the bearings b b will be placed in such a relation to the machine that as such arms 6 rise with the movement vertically of the shaft C the arm that is to receive the folded sheet will pass into the end sheet of the mass of sheets as theyare suspended upon the bearings b and as this takes place the sheet-holding rod of that sheet will be dropped by the means hereinafter described, so that the sheet will fall upon its arm 6, and the sheet-holding rod will drop entirely away into a box or receptacle, ready to be used over again; but if the sheet-holding arms 0 shown in said patent are dispensed with, then the sheet-holders a must be made of a character adapted to remain in the sheet and hold the same while being sewed, after which such sheet-holders drop or are withdrawn.

The sheet-holders a are represented as adapted to hold the sheet during the sewing operation. With this object in view the edge of each holder is deeply channeled, so as to form a guide, into which the needle passes in performing the sewing, and it is preferable to make both edges of the sheet-holder with similar channels, so that the holder may be used with either edge uppermost.

I have represented the needles 1 l. They are to be semicircular, for use in a sewing-machine such as that shown in my said Patent No. 220,312; but it is to be borne in mind that this sheet holding and feeding device may be used with a book-sewing machine such as thatshown in Letters Patent No. 184,961, or No. 184,989, or in any other machine to which it is applicable.

The sheets, as suspended upon the bearings I) by the sheet-holders a, are to be pressed to- I00 ward the point of delivery or sewing either by the hand of the operator or by a follower, f

acted upon by springs g", and having its ends resting upon the bearin gs b N, which follower is drawn back from time to time and raised and then placed behind another mass of suspended sheets. The constant pressure tends to move the sheet-holders up againstthe stops 1", that are in such a position to the sewing devices or other parts of the sewing-machine that the last sheet will be in correct position; and beneath each end of this sheet-holder there is a dischargin g-finger, 0 that sustains the sheetholder while the sheet is being sewed; but as soon as the sewing operation is finished these fingers are withdrawn by a crank, v or other connection to a cam or similar device receiving motion from the motor. This allows the sheet-holder to drop down out of the sewed sheet; or there may be a slide to carry such sheet-holder down and out of the way in any convenient manner. The next sheet-holder is moved up immediately, and the fingers are returned to place to sustain the same while the sewing operation is repeated. The stationary incline t is placed so as to act against the edges of the folded sheets as they are moved up to place for sewing, and move such sheets endwise of the holders into the correct position for the sewing mechanism. This incline may be adjustable.

I claim as my invention- 1. The holders for folded book-sheets, in combination with bearings for the ends of the sheet-holders to slide upon, and means, substantially as described, forliberating the sheetholders successively at the ends of the bearings, so that said sheet-holders may fall away or be removed from the sheets, substantially as specified.

2. The combination, in a book-sewing machine, of sheet-holders, end bearings for the same, fingers for sustaining the sheet-holders and sheets while the sewingis being performed, and means for moving such fingers and liberatin g the sheet-holders successively and allowin g for their removal, substantially as set forth.

3. Asheet-holder for a sewing-machine,having a groove for the needles in each of its edges,and adapted tobe supported at its ends, substantially as set forth.

4.. The combination, with the sheet-holders and bearin gs for their ends,of a stationary incline to move the sheets endwise of the holders into the proper position for sewing, substantially as set forth.

Signed by me this 5th day of May, A. D. 1881.

DAVID M. SMYTH.

Witnesses CHARLES E. Gnoss, It. D. HUBBARD.