USRE11184E - set bold - Google Patents

Description

4 Sheets-Sheet 1.

C. SEYBOLD. BooK TRIMMING MACHINE.

No. 11,184. Reissued Aug. 4, 1891.

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IIIIIIIIIIIIIIII 4 Sheets-Sheet 2.

C sEYBoLD BOOK TRIMMING MACHINE.

Reissued Aug. 4, 1891.

HIIHII '4"sneet-shee1; A:3., C. sBYBoLD. BOOK TRIMMING MAGHINE.

No. 11,184. Reiss'ued Aug. 4, 1891.

Tn: non" uns no., maro-mp4s., mimmo, u. c.

V .To all whom it may concern:

-VILBLE COPY IUNITED. .STATES PATENT OFFICE.

CHARLES SEYBOLD, OF CINCINNATI, OHIO. I

BooK-TRIMMING MACHINE.

SPECIFICATION forming part of Reissued Letters Patent No. 11,184, dated August 4, 1891.

Original No. 442,295, dated December 9. 1890. Application for reissue filed June 30, 1891. Serial No. 398,031. v

Beit known that I, CHARLES SEYBOLD, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Book-Trimming Ma# chines, of which' the following isa' specification, reference being had to the accompanying drawings, formi ng a part thereof, in ,wh ich similar letters of reference referto corresponding partsjof the machine throughout. The primary object of my invention is to provide-amachine for trimming bundles of paperitofbook form, the said machine being so contiructed as to clamp the bundle to be trimmefkln proper position and afterward to automatically trim or cut each side of the bundle consecutively without stopping the m ne, the latter being so constructed as that-it will stop automatically after having made the fourth or last cut, as will more fully A hereinfter appear.

In the accompanying drawings, Figure l is a front elevation of a machine embodying the features of my invention, the length of the machine as shownin comparison to the height thereof-being about one-.third longer than what the machine is actually built. Fig. 2 is a horizontal section taken on the dotted line 2 2 of-Fig. 1, showing the top portion of the bed-plate, clamp-table, andoperating mech auism. Fig. 3 is an end elevation taken at left hand in Fig. 1, showing the preferred form of mechanism for causing the knife-carriage to automatically move back and forth on -the-bed-plate, the upper portion of said knife-carriage and-clamping mechanism being broken away. Fig. 4 is a vertical section taken on the dotted line 44 of Fig. 1, looking toward the right hand in said ligure, showing the preferred means for securing the clamp- Fig. 4, being a top view of -the clutch mechauism for imparting a rotary motionto the clamp-screw in either direction and of the mechanism for automatically rotating the clamp-table@ partial rotation at certain.'determinate intervals. Fig.v7 is a sideelevation of a partof thelever for automatically stopping themachinend its connecting parts, the dotted 'lines showing said lever e1e.

vated, in which position the machine does notl \operat Fig. 8 is a verticalfsection taken throng i the knife-bed, knife, and vthevertical f cross-plate of the knife-carriage, showin g one of the rollers which supportthe knife-bed in position in the inclinedy groove in the cross- My improved machine for trimming `bundles of paper into book form is preferably constructed as follows: l

The operating mechanism is supported and journaled in suitable frame-work A andbrackets attached thereto, said frame-work being covered with a suitable bed-plate A', attached thereto, the rear extensions G6 of the bedplate being supported bythe brackets A2, as shown. i f

The mechanism forclamping the bundle of paper in position to be cutis preferably con.-

structed as follows: The clamp-screw B isheld in position by means of a washerb, (see Fig.

4,) interposed in a circularrecess in the top of sleeve B ,directly beneath the clamp-table C, as shown, the said sleeve B having an enlarged circular head B2 resting in a circulaicountersuuk portion of thebed-plate A', the table C being connected to said -enlarged head of the sleeve, as shown in Fig. 4.A I To the- A90 wheel B3, which latter engages with the,cor.z 1 responding miter-Wheels B4 B, placed on fthe-zy main shaft B5, and held to place by meansjofz lower end of screw-rod B is securedthe miterthe set-collars b', as shown in Figs. 1 and-6s? To the clamp-table C are connected the vertical guides C C', between which the screwclamp C2 travels up and down on the screwrod as the latter is rotated in either direction.

'lo the clamp C2 is bolted or otherwise suitably secured the pattern or form plates Cs,

the latter being made of varying sizes to.

conformto the size of book desired to be IOO trimmed. To the main shaft B5 and lbetween the miter-wheels B4 is secured the friction-` foot-treadle.

clutch B5, the latter having a feather-andgroove connection with said shaft to permit said clutch to be moved horizontally thereon. The clutch Bhas a central circular recess b2, in which the bifurcated portions of bar BT rest, as shown in Fig. -6. The clutch-bar B7 has a rod B5 passing through it, as shown by section in Fig. 4, and also shown in Fig. 6, the outerend of said bar passing through an elongated opening?)T3 in the cross-frame, (see Fig. 1,) the outerend of said bar operating in a vertically-elongated opening b4 in -the extension of the foot-treadle B9, as shown in Figs. 1 and 4. This foot-treadle is pivoted to the downward extension A3 of thecross-frame A, as'shown in Fig. 1. The rod B is suitably connected to the end frames of the machine, suitable spiral springs being interposed around said rod between the end frames and the clutch-.bar B7 in order to retain the clutch centrally between the miter-wheels B4 at all times, except when operated by means of the` Having described the preferable construction of the mechanism for clamping the-paper to be trimmed on the clamp-table, I will now 'describe the operation of this part of the machine.

The bundle or bundles of paper to be trimmed are placed on the table C (said table preferably being provided with the wooden covers C4 shown in Fig. 1) at either side the guides C', after which the form-plate C3, attached to the clamp-plate C2, is brought down on said bundles of paper by placing the foot on one side of the treadle, which causes the clutch B6 to slide on the revolving shaft B5 and engage one of the miter-wheels B4,which latter causes the miter-wheelB5 and with it the screw-rod B to rotate. The rotation in one direct-ion of this screw-rod Bcauses the clamp C2 and with it the form-plate C3 to descend on the screw-rod and firmly clamp the paper in position on the table C. It will be seen that Iam enabled to clamp two bundles of paper at one time, one on each side of the guides C'. The pressure is kept on the foottreadle until the paper is firmly clamped to place, after which the pressure is released, and the clutch B6 will be thrown back in its normal position away from the miter-wheel by means of the coiled spring on rod B5. 'After the bundles of paper have been trimmed (in the manner hereinafter stated) pressure is put on the opposite side o'f the treadle, which will cause a reverse revolution of the screw-rod, thus causing the clamp-plate-C2 and its formplate C3 to travel up said rod, when the bu ndles of trimmed paper may be removed.

Having described the preferable form of mechanism and its operation for clamping the bundles of paper in position to be trimmed, I will now describe the preferable form of mechanism for automatically driving -the knife-carriage and its knife up to and away from the bundles of paper and for operating said knife and the clamp-table,'and also for automatically stopping the machinegat certain determinate intervals.

To the main shaftv B5are secured the usual tight and loose pulleys D and D', a suitable clutch-pinion D2 being loosely secured to said shaft in the usual manner for engaging or disengaging the clutch D3 with the tight pulley D by means of lever D, the object of this mechanism being to permit of a constant revolution of .shaft B5 and pulley D without imparting motion to the pinion D2, excepting when desired to operate the machine. This part of the mechanism is old and well known for transmitting power, and does not constitute any feature of my invention, excepting in connection with other mechanism hereinafter described. The shaft B5 is provided on its opposite end withl the usual balance-wheel D5. The clutch-'pinion D2 meshes with the large gear Egwhich latter is keyed to one end of the auxiliary shaft-El', the latter being suitably journaled in the end frames of the machine. v To the outer central face of gearE is cast the face-camv E2, against which the roller e,pivoted in the lower end of lever E5, rotates. As the cam is rotated the roller is fmad'e to travel Aoutward over the'inclined face c of the cam, forcing the lower portion of the 1ever outward andthe upper portonjof the lever inward and downward, and Awithit the knifebed,as will more fullyappearff" So soon as the roller ehas reached the outermost point on the. cam said roller is made to travel back down the inclined face ez'into the` innermost recess between said faces of the camby means of the spring connected to the knife-bed, as will more fully hereinafter appear.'

` To the innerface of the gear E, and around its journal-bearing, is cast the pinion E, as shown in Fig. 7 and by dotted lines fin'Figs.' 4 and 5, said pinion meshing with the gear E5, which latter is journaled on a stud projecting outward from the downward extension A4 of the frame,- as shown in Figs. Ltand 5. The pinion E4, cast with the gear E, is one-fourth the diametervof gear E5, with which it meshes, in order that four revolutions of the auxiliary shaft E will produce one revolution of the gear E5.

5 and 7,) which lug as the gear is rotated comes in contact with the extension fof vlever F, as shown in Fig. 7, and raises the outer end of said lever, the latter being pivotedat its rear end to the frame, as shown at j' in Figs. 4 and 5. The outer end of lever F operates in the bracket f2. (Shown in Fig; 5.)

As shown in Figs. 1 and 2, 'the lever D4 has a pin d connected thereto, which pin is held `agai nst the outer face of lever F when the machine is in operation and in the opeuingfS .(see Fig. 7) when the machine is stopped,said pin being held to position by means of a spring d', attached to the lever Dl and to the frame of the machine. To start the machine the lever D* is pulled inward, which causes' the clutch to engage To theinner face of gear E5, and near its outer edge, is casta lug e3, (see` Figs.

with the tight pulley. and the pin dis drawn out of the opening f3 in lever F, permitting the outer end of said leverh` to drop down in thebracket f2, in which position the pin CZ is held against the outer face of lever F just above the opening f5, as shownby dotted line in Fig. 7, by means of the spring rl. The clutch is held in position in contact with the tight pulley by reason of the pin CZ bearing against the face of lever F, which causes the clutch-pinion D2 to impart motion to gear E, and as gear E is rotated the pinion E4 connected thereto rotates and with it the gear E5. The pinion E4 being one-fourth the diameter of gear E5, it will take four revolutions of saidpinion to accomplish one revolution of said gear, and so'soon as the pin e5 on gear E5 comes in contact with the inclined face of lugf on lever F the outer end of said lever is elevated, as shown by dotted lines in Fig. 7, in which position the pin d on lever D1 is drawn into the openingf5 by means of spring d', which operation draws the clutch away from `the tight pulley and stops the operation of the machine.

It will be seen that the machine is stopped automatically at every fourth revolution, the

number of revolutions to be given the auxiliary shaft before stopping the machine being governed by the size or number of cogs on pinion E4, which may be varied, if desired. The object of this arrangement for automatically stopping the machine at each fourth revolution of the auxiliary shaft is to permit of the trimmed bundles being removed, each revolution of the auxiliary shaft trimming.

one-side'of the bundle, as -will more fully hereinafter appear.

The knife G is secured to the knife-bed G by means of bolts g, passed through the knife and resting in a countersink in such a manner as that the head of each bolt will come flush with the outer face of the knife, said bolts passing through the elongated openings ct in the lower portion of the knife-bed G as shown in Fig. 8. The knife is adjusted vertically on its bed by means of the set-bolts r ,f after which the nuts on the bolts g are tightened. Between the outer upward extension g2 of the knife-bedis secured the rod G2, around which is secured va stil spiral spring g5, interposed between the lug g4 and lug g5, the latter being loosely connected to said rod, the said ylug g5 having the roller g pivotally connected to a stud thereon, as shown in Fig. l. This roller g6 has the side circumferential flanges which engage the outer and inner face nf guide G5, against which said roller impinges and rotates as the knife-bed is raised or lowered. The knife-bed is held in place between the vertical guide-plates G3 and the rear vertical plate G5 of the carriage in an elevated position by means of the spring g5, which is compressed around the rod G2 between the stationary lug g4 and the sliding lug g5,.conneeted to roller g5. To the rear of the bed-plate is connected suitablelugs on which the rollers g5 rotate, the latter rotating against the lower face of the elongated inclined grooves g in the rear plate G5, as shown in Fig. 8 and by dotted linesin Fig. l. Then the knife-bed is forced downward, the rollers gB travel down the face of said inclined grooves, said knife-bed being elevated again by the tension of spring g3 against the lug g5, the latter traveling up with its roller gG rotating against the guide-plate G5. The knifecarriage isl made up of the vertical end plates G4, guide-plates G3, rear cross-plate G5, and rearward extensions G6. This carriage is upheld and travels `upon the rollers G7, which latter rotate upon suitable spindles connected in any desired manner to the frame of thev carriage, said rollers rotating and traveling upon the bed-plate A and the rear extensions thereof, as shown. The carriage is retained to the frame and bed-plate by means ofthe wedge-shaped projections GS on the carriage engaging a similar recess G9 in the sides of the end frames, as shown by dotted lines in Fig. l. .i

Having described the preferred construction of the carriage, knife-bed, and knife and their connecting parts, I will now describe the preferred means, as-shown, for operating the knife-bed and its knife, which is as follows:

Between the extensions H, cast with the end frame A, is pivoted the lever E5, to the lower end of which is connected the roller e, which latter rotates and bears against the two inclined faces of the cam E2, in the manner aforedescribed. The upper portion of this lever E3 above its pivotal pointis bifurcated, as shown in Fig. 5, a suitable shaft H2 being connected to the top portions of said bifurca- IOO tions, as shown, on which shaft is placed the Y anged roller H5. This Aroller rests and ro tates against the vertical gage H4, the'latter being connected to one end of the knife-bed by means of the set-screws h, which operate in extensions of said gage against said knifebed, as shown in Figs. l and 5. The flanged roller H3 is kept in contact with the gage at all times, and moves back and forth on the shaft as the carriage travels forward or backward. may be dispensed with, in which event the roller will operate against the vertical face of the knife-bed; but it is preferred to employ said gage to assist in adjusting the downstroke of the knife. The operation of this portion of the machine is as follows: The revolution of cam E2 causes the roller e to travel outward over itsinclined face e', thus forcing the lower end portion of lever E3 outward and its upper bifurcated portion inward and downward, and with it the knife-bed and its knife, the roller H3 traveling down over the face of gage H4. So soon as the roller -e on lever E3 has passed the outermost point on the face e of the cam the pressure on the knifebed is released, and the latter, with its knife, is elevated through the tension of spring g3,

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lf desired, this gage and set-screws as aforedescribed, and as'the knife-bed and knife are being elevated the upper portion of lever E3 is forced outward and its lower porticn, with the roller c, is forced inward, said roller traveling back on the inclined face e3 of the cam, as shown in Fig. l, in which posi- -tion it is in readiness to begin another cut.

It is desired that the knife be not elevated higher than the thickness of paper after be` ing clamped in position, for the reason that the knife must strike against the form-plate C3 as the carriage is traveling forward, as will hereinafter appear. For the purpose. of adj usting the height to which said knife may be elevated, I have provided the set-screw H3, which operates in the bracket h2, connected to the projections H, as shown in Fig. l, the outer end of said screw bearing against the lever E3 below its pivotal point. Turning the screw in one direct-ion forces the upper portion of the lever inward and the knife is lowered, above which point it can in no case be elevated except by turning the screw in the opposite direction, which will permit the lower portion of the lever to move inward, and the knife will be correspondingly elevated.

The depth of stroke to be given the knife is regulated principally by means of the gage H4, which is wedge-shaped on its inner face and rests against the inclined outer face of the knife-bed, as'shown, said gage being regulated up or down on said knife-bed by means of the set-screws 7L. To lower the cut the gage is elevated, and to elevate the cut'the gage is lowered.

Having described the construction of the carriage and the construction and operation of the knife-bed and knife on said carriage, I will now describe the preferable construction of mechanism shown for automatically operating said carriage and its knife up to and away from the form-plate clamped on the bundles of paper at certain determinate intervals. This mechanism for thus causing the carriage to automatically travel back and forth on the rollers G7, the latter resting on the bed-plate A and its rearward extensions, is fully shown in Figs. 1, 2, and 3, and is as follows:

To the auxiliary shaft E outside the frame, is keyed the disk K and toothed segment K', said disk being provided with the beveled toothed portion Z for about one-quarter of its inner circumference, said teeth on lthe disk meshing with the beveled pinion L at one side thereof, which imparts motion in one .direction to said pinion. The segment K in its rotation imparts motion to the pinion L in a direction opposite to that imparted by the toothed portion of the disk, said segment being so locatedthat it will act shortly after the said toothed portion of the disk shall have passed said pinion. The pinion L is keyed to the shaft L', to which latter is also keyed the stop-lug L2, Which'latter has a flat` faceto impinge against the inner face of the outer bearing-faces Z2 on the disk K, said bearing-faces being so located that the iiat face of stop-lug L2 will bear against the bearingfaces Z2 when the teeth of said segment and disk are not in contact with said pinion, the object being to retain said pinion in proper position to mesh with the segment and toothed portion of the disk in theirrotation. To the shaft L is connected the two caps L3 by -means of a feather-and-groove connection, to

admit of a vertical movement to said caps, between which the pinion L3 is loosely connected to said shaft,but connected therewith by the tension of a spring L5, interposed between the top cap L3 and nut Z3, suitable friction-washers being interposed betweensaid caps and pinion. To the outer edge of the knife carriage is connected the horizontal toothed rack M, in which the pinion L4.meshes in its rotation in either direction; The operation of this feature of my invention is as follows: Motion being imparted to the auxiliary shaft E', the disk K and segment K are rotated in the same direction on opposite sides of the pinion L, which causes an intermittent motion to be imparted to said pinion and its shaft L in opposite directions, one revolution of said shaft E causing the carriage to move forward and backward through the medium of pinion L4 and rack M. The pinion L4, as aforestated, is loosely connected to its shaft, being held in position therewith between the caps L3 by means of a suitable spring. The tension of this spring is strong enough to hold said pinion in position and to operate the carriage back and forth 5 but so ysoon as the knife on the carriage moves up and strikes the form-plate C3 on the clamp the forward movement of the carriage is stopped and the pinion L1 ceases to rotate, the caps L3 rotating on said pinion until the teeth Z on the disk have passed the pinion L. So soon as the knife strikes the form-plate it is made to descend with a shearing cut inthe manner aforedescribed, and after having made its cut the carriage and knife are carried back by means of the toothed segment K. The object of having this pinion L3 loosely connected to its shaftand held in position by friction is to accommodate varying sizes and configurations of form-plates which are used to determine the size of book orbundle to be A trimmed.

I will now describe the preferable construction of the mechanism shown for automatically imparting a partial revolution of the table on which the bundles of paper are clamped after the carriage and its knife have receded from the form plate, as aforedescribed, which construction is as follows:

To the auxiliary shaft- E between the end frames is keyed the vertical disk N, having a horizontal lug'n cast toits inner face, which lug, as the disk is being rotated, engages with one of the vertical lugs n', cast to the bottom portion of the horizontal plate N', as shown in Figs. 4 and 6. The plate N is keyed to the vertical shaft N 2, to which latter is also keyed Loo IOS

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machine in motion.

the gear O,Which meshes with a similar gear O', connected to the sleeve B', (see Fig. 4,) thev enlarged head B2 of said sleeve being connected to the table C, on which 'the bundles o t paper are clamped. A portion of the outer circumferential face of disk N near the lug n is cut away, as shown at n2, Fig. 4, in order to permit one corner of the horizontal plate N' to give a quarter-turn over said disk at its cut-away portion when the lug n on the disk comes in contact with one of the lugs n on the plate. The inner face of said disk impinges against one face of the plate at all times, except at its cut-away portion, thus securely retaining said plate and the table in position for the knife to act.

The operation of this feature of my in vention for automaticallyimparting a partial rotation to the clamp-table at certain determinate intervals is as follows: A rotary motion being imparted to the'auxiliary shaft, the vertical disk N is rotated, as indicated in Fig. 4, the lug n coming in contact with one of the vertical lugs n on the horizontal plate N', and so soon as the two lugs come in contact the plate N" is given a quarter-turn, the corner of said plate passing `over the disk at its cut-away portion, as indicated by dotted lines in Fig. b. Each successive revolution of the disk gives a quarter-turn to the plate, which motion is imparted to the table C through the medium of shaft N2, gears O O', and sleeve B', to which latter the gear O and table C are connected, as shown in Fig. et.

Having described the operation of each op` erative part of the machine in connection With its preferable construction, I Will now brieiiy describe the operation of the machine as a Whole.

The bundle or bundles of paper to be trimmed are placed on the table O at either side the guides C', after which the form-plate C3, attached to the clamp C2, is made to descend on the screw-rod by putting pressure on one side the foot-treadle B9, the pressure being applied until the paper is suiiiciently clamped, when the pressure is removed, causing the clutch to disengage with one of the miter-Wheels B4, as aforedescribed. Having clamped the bundles of paper in position, as shown in Fig. 5, the operator grasps the lever D, giving it a pull inward, which starts the The pin d, bearing against the face of lever F, serves to retain the clutch in contact with the tight pulley 'until automatically released, as will presently appear. So soon as motion is imparted to the auxiliary shaft E' the teeth l on disk K will cause the knife-carriage to travel forward on the bed-plate, in the manner aforedescribed, until the knife G strikes the inner face of the form-plate C3, as shown by dotted lines in Fig. 5. So soon as the face of the knife strikes the form-plate the motion of the carriage is stopped in the manner described, the pinion L4 being held to place by friction between the caps L3. The cam E2 is so adjusted with reference to the disk K and segment K' that when the knife is brought up against the form-plate C3 said knife is made to descend with a shearing cut, through the medium of the knife-bed G', lever E3, and cani E2 in the manner aforedescribed, accurately trimming one side of the paper, and so soon as the knife has made its cnt the carriage begins to travel backward through the medium of segment K', and the knife-bed and knife are gradually elevated again in the manner described. The carriage and its knife having traveled up to the formplate, made one cut, and receded again, it is necessary that the clamptable, paper, and form-plate be given a quarter-turn in order to present a new face to the knife. This is accomplished automatically by adjusting the disk N and plate N' in such a position with reference to the segment K' and cam E2 as that after said segment shall -have caused the carriage to travel back and after the knife has been elevated in the manner aforedescribed the lug yn on the disk N will come in contact with one of the lugs n 'on plate N', which will cause the table to be given a quarter-1 urn, as set forth. The inner face of the disk N bearing against the side of the plate N', except at its cut-away portion, willV securely retain said table in a fixed position until the knife has again made its cut and receded, as described.

It will be seen that it takes but one revolution of the auxiliary shaft to cause the knife-carriage to carry the knife up to the forni-plate, cut one side the bundles of paper, elevate and carry the knife again, and give the clamp-table a quarter-turn, presenting a new face to be trimmed. Each successive revolution of the auxiliary shaft automaticallycarries the knife forward, cuts one side the bundle, elevates and carries the knife back away from the form-plate, and gives the latter and the clamp-table one quarterlIO turn, until atthe coinpletionof the fourth revolution of said shaft, after the four sides of the bundles have been trimmed, the machine is automatically stopped by means of the lug e3 on gear coming in contact with the projection f on lever F, (see Fig. 7,) which causes the outer end of said lever to be elevated, which will cause the pin d onleverD4 to drop into the opening f5 in said lever F by reason of the tension of spring d', which operation will withdraw the clutch from the tight pulley, stopping the machine.

It is apparent that my improved machine for trimming books may be advantageously used to trim circulars, posters, and various other articles besides books, and may be adjusted, if so desired, to trim articles having more than four faces by simply changing the gear E5 or the pinion E1L so that it will require more than four revolutions of the auxiliary shaft to automatically stop the .mav.

time saved is taken into consideration. The features of automatically carrying the knif-e back and forth, rotating the clamp-table, and stopping the machine all at certain determinate intervals are very valuable ones when combined in a book-trimmer such as I have shown and described.

Thile the mechanism shown for accomplishing the various operations enumerated 1o automaticall is the referred form an suity P 7 y able operative mechanism may be employed for automatically carrying the knife up to and .away from the form-plate, rotating the clamp-table a partial rotation, operating the I5 knife, and stopping' the machine all at certain determinate intervals. If desired, one or more of said features of my invention may be used in connection with book-trimmers differing in construction from that herein specifically set zo forth.

What I claim as new, and desire to secure by Letters Patent, is

l. In a machine for trimming books, the vertically-movable knife-bed and knife suit- 2 5 ably mounted on a traveling carriage, in combination with means, substantially as set forth, for automatically driving said carriage forward and backward on the bed-plate of the machine, and suitable means for clamping the bundle of paper in position and for with a form plate,

operating said knife, substantially as set forth.

2. In a machine for trimming books, the clamping mechanism, constructed and operated substantially as set forth and provided knife-bed and knife mounted in a traveling carriage in a vertically-inovable position, and means,- substantially as set forth, for automatically carrying said knife up to and away 4o from said form-plate at certain determinate intervals, and mechanism for operating said knife, as and for the purposes set forth.

3. `In a machine for trimming books, suitable mechanism` for clamping the bundle of paper between a form-plate and a table, in

combination with a vertically-movable knife mounted in a traveling carriage, and mechanism, substantially as set forth, for automatically causing said carriage and its knife to approach and recede from said form-plate, and

automaticmechanism for operating said knife when it has approached said form-plate and for rotating said table a partial revolution after the knife has made its cut and receded from said form-plate, as set forth.

el. In a machine for trimming books, constructed and operated substantially as set forth, and in Which each revolution of the auxiliary shaft will automatically trim one 6o side of the bundle, mechanism, substantially as described, for automatically stopping the machine at certain determinate intervals, as and for the purposes set forth.

5. In a machine for trimming books, adapt- 6 5 ed to operate substantially as set forth, the

means herein shown and described for autoin combination with a` matically moving the carriage back and forth on the bed-plate at certain determinate intervals, the same consisting` of a disk K and toothed segment K', keyed to the auxiliary shaft E', the said disk having the beveled teeth Z around a portion of its inner face, pinion L, shaft L', stop-lug L2, caps L3, loose pinion L4, interposed between said caps, spring L, and'nut Z3, all arranged and adapted to operate in the manner set forth.

6. In a machine for trimming books, constructed and adapted to operate substantially as set forth, the knife-bed G, having the knife G adjustably connected thereto, said knife-bed being connected to the rear plate G5 by means of the journaled rollers g8, adapted to rotate in the inclined grooves 99 in said plate, a suitable coiled spring being interposed around the rod G2 between a lug g2 on said bed-plate and the lug g5, connected knife-bed is operated, as and `for the purposes specified.

7. In combination with the knife-bed and knife mounted in a movable carriage, and mechanism for automatically moving said carriage at certain determinate intervals, the lever E3, pivoted to supports on the end frame, said lever being bifurcated at its top portion, shaft H2, connected to said bifurcated portions, flanged roller I-I3 on said shaft and bearing against one end of said knifebed, and .roller e, connected to the lower end of said lever, said roller e bearing against the faces of cam E2, and suitable means for rotating said cam, as set forth.

8. In a machine for trimming books, the same having a knife mounted in a movable carriage, as set forth, and a clamp-table on which the book to be trimmed is clamped, mechanism, substantially as described, for automatically imparting a partial rotation of said table at determinate intervals, for the purposes set forth.

9. In a machine for trimming books, constructed substantially as set forth and provided with a clamp-table, the means herein shown for automatically imparting a partial revolution t0 said table at certain determinate intervals, consisting of a vertical disk N, keyed to the auxiliary shaft E', said disk having a horizontal lug n, rectangular plate N', keyed to shaft N2, said plate having the vertical lugs n', gear O, keyed to shaft N2,

said gear meshing with gear O, connectedto sleeve B', to which the table C is connected, a portion of disk N being cut away, substantially as set forth.

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l0. In a machine for trimming books, constructed substantially as set forth, the mechanism herein shown and described for automatically stopping the machine at certain determinate intervals, consisting of lever D, having a pin cl connected thereto, spring d', lever F, having an opening' f3 therein and a lug projection f, gear E, having the pinion east thereto, and gear E5, having a lug e, all

combined and adapted to operate as set forth.

ll. In a book-trimming machine having a knife mounted in a movable carriage and a clamp-table adapted to be rotated automatically a partial rotation at determinate intervals, a suitable clamp provided with va formplate for clamping the book on said table and for guiding the knife, substantially as set forth.

l2. In combination with a book-trimming machine having a clamp-table, traveling carriage, and avertically-movable knife mounted thereon, and connecting mechanism for automatically moving said carriage, lowering the knife, and partially rotating said table, all at determinate intervals, the clamp-screw, clamp and form-plate connected to said screw, and suitable means for impartin ga motion thereto in either direction, as set forth.

13. The means herein shown and described for retaining the pinion L in proper position for engagement with teeth Z on disk K and the toothed segment K in their rotation, the same consisting of a stop-lug L2, keyed to shaft L just above said pinion, said lug having a flat face bearing against the inner face j of said disk, except at the cut-away portion ot' said disk, as and for the purposes set forth.

' 14. The means herein shown and described for retaining the clamp-table C in a fixed position, excepting at-certain determinate intervals, the same consisting of the vertical disk N and rectangular plate N', connected and operated substantially as set forth, the inner face of said disk impinging against one side of the plate, a portion of the bearing-face of said disk being cut away, as and for the pur.- poses set forth.

15. In combination with the vertically-movable knife-bed and knife mounted in a traveling carriage, substantially as set forth, and suitable means for operating said knife-bed, a suitable adjusting device, as H4, adjustably connected to one end of said knife-bed, as and for the purposes set forth.

16. In combination with the vertically-111cvable knife-bed and knife mounted in a traveling carriage adapted to operate substantially as set forth, and a suitable lever for operating said knife-bed, the means herein shown for regulating the height of said knifebed and knife on said carriage, consisting of a set-screw, as H5, as and for the purposes set forth.

CHARLES SEYBOLD. Witnesses:

W. B. BRICE, O. M. HILL.

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