US665072A

US665072A - Automatic controller for printing-presses.

Info

Publication number: US665072A
Application number: US920100A
Authority: US
Inventors: Talbot C Dexter
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-03-19
Filing date: 1900-03-19
Publication date: 1901-01-01
Anticipated expiration: 1918-01-01

Description

PaIented Ia n. l, I90I.

Application med an} 19, 1900.,

9 Sheets-Sheet I.

(No min.

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No. 665,072. T Patented Jan. I, I901. T. C. DEXTER. AUTOMATIC CONTROLLER FOR PRINTING PRESSES.

A ncmim filed. Mar. 19, 1900.) v i (M 9 Sheets-Sheet 2 INVENTOR W.,% zz5 7. g@

ATTORNEY} m: norm: warms co. PHOTO-LUNG" WASNLHGYON n c No. 665,072. Patented Jan. I, I901;

T. C. DEXTER. AUTOMATIC CONTROLLER FOR PRINTING PBESSES. I

(Application filed 19, 1900;] i (No Model.) 9 $heets-Shaet. 3.

ATTORNEY No. 665,072; Patented Ian. I, l90l. T. c, DEXTER.

AUTOMATIC CONTROLLER FUR PRINTING PBESSES.

I Appiication filed 1m. 19, 1900.1 (No Model.) 9 Sheets-Sheet 4.

wlmassas T INVENTOR ATTORNEY Patented Jan. 19m.

T. 'c. DEXTER. 7 AUTOMATIC CONTROLLER FOR PRINTING PRESSES.

Appliatibzi filed Mar. 19, 1900., (No Modal.)

9 Shaots-Shaat 5.

m INVENTQR fl oz ATTORNEY WITNESSES: w aw-M Patented Ian. I. I90l. T C. DEXTER. AUTOMATIC CONTROLLER FOR PRINTING PRESSES.

Application filed Mm. 19, 1900.) (No Model.) 9 Sheets-Sheet 6.

INVENTOR We. wa

WITNESSES;

A TORNEY Patented Jan. I, I90l. T. C. DEXTER I AUTOMATIC GONTBOLLER FOR PRINTING PRESSE S.

(Application filed Mar. 19, 1900.: (No Model.)

9 Sheets-Shut '7.

I VE TOR- WITNESSES.

KIM

ATTORNEY m: uonms moi-mama. msumaron. n. c,

No. 665,072. :PatentedIan. I, I90I. T. c. DEXTER.

AUTOMATIC CONTROLLER FOR PRINTING PRESSES.

Application Med Mar. 1 00" (No Model.) 9 Sheets-Sheet 8.

WIT ESSES: I INVENTOR' ATTORNEY No. 665,072. Patehtd Jan. |9o|..

' S T. CQDEXIER. S

AUTOMATIC CONTROLLER-FOB PRINTING PRESSES.

{Application filed m". 19, 1900.)

(No Model.)

T INVENTOR- 7 ATTORNEY E. 3 a 0 $2 ,u 0

WITNESSES:

UNITED- STATES PATENT- GFFICE.

TALBOT O. DEXTER, OF PEARL RIVER, NEW YORK.

AUTOMATIC,CONTROLLER FOR PRINTING -PRESSES SPECIFICATION forming part of Letters Patent No. 665.072, dated January 1, 1901.

Application filed March 19, 1900. Serial No. 9,201. the models To ctZZ whom it may concern:

Be it known that I, TALBOT O. DEXTER, a citizen of the United States, and a resident of Pearl River, in the county of Rockland, in the State of New York, have invented new and useful Improvements in Automatic Controllers for Printing-Presses, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description. p

This invention, relates to devices designed to automatically cont-r01 the action of printing-presses supplied with paper by feedingmachines. L

The chief object of this invention is to effectually guard against carrying the faceof the impression-cylinder into contact with the inked surface of the form on the press-bed in case of accidental failure in the delivery of paper at the proper time to the press.

My said in ventionis more specially required for printing-presses equipped with paper-feeding machines Which are provided with means for automatically switching the paper from its path to the printing-press in case two or more sheets are delivered simultaneously from the feeding-machine. Oneformofsuchswitching devices is shown in my Letters Patent No. 618,648, dated January 31, 1899, which switching of the paper obviously deprives the press of the requisite supply of paper.

The invention consists in the improved mechanisms and combination of cooperating elements, as hereinafter described and claimed.

In the annexed drawings, Figure l is a side elevation of my invention, showing its connection with a printing-press and paper-feeding devices. Fig. 2 is an enlarged plan View of the principal parts of the same. Fig. 3 is an enlarged elevation of the tripping and stopping mechanismsoftheprinting-press. Figs. 4, 5, and 6 are elevations of the devices for automatically controlling the aforesaid tripping and stopping mechanisms shown in different operative positions. Fig. 7 is a side elevation of my invention as applied to a printing-press driven by an electric motor. Fig. 8 is a vertical longitudinal section on line X X in Fig. 2, viewed in the direction of the arrow. Fig. 9 is an enlarged detached side View of the mechanisms for tripping the impression-cylinder of the press. Fig. 10 is a plan View of the same. Fig. 11 is a, face view of the belt-shifting lever and its connections. Fig. 12 is an enlarged vertical transverse section on lineY Y in Fig. 2, viewed toward the left from said line. Fig. 13 is a side elevation showing my invention provided with means for allowing the press to be controlled at will of the pressman standing at either end of the machine, and Figs. 13 and 14 are enlarged detached perspective views of the feelers which control the actionof the printingpress.

In the said drawings,

'ing-press, and B the paper-feeding machine,

both of which may be of any suitable and wellknown type, and C denotes the conveyers which'carry the paper from the feeding-machine to the printing-press and consist mainly of endless tapes extending from the feedingrollers D of the feeding-machine B to a roller E, mounted in suitable hearings on the stationary side rails F.

The printing-press represented in this case is of the type which has a vertically-movable A represents a printimpression-cylinder I and is usually termed a two-revolution press.

The journal-boxes J of the impression-cylinder slide vertically in guides H on the frame K of the press and are sustained normally in elevated position by means of spiral springs L, resting upon verticallymovable cross-bars N and abutting with their upper ends on shoulders formed on rods 0 0 depending from the journal boxes, said cross bars being mounted upon the ends of stout spiral springs P, seated in the press-frame and forcing th cross-bars upward. The necessaryintermittent downward pressure of the impression-cylinder is obtained by means of toggles T, connected at the extremities of their arms, respectively, to the press-frame K and to the cross-bars N. By the straightening of said toggles the crossbars N are depressed, and thus the impression-cylinder is allowed to descend bygravity. This straightening of the toggles is usually effected by means of a pitman R, connected at one end to a transverse shaft S, to each end of which one of the toggles is pivoted at the junctionof its arms. The free end of said pitman is formed with a notch R, by which it rides upon the free end of a 1i ro1i erly-ti med rock-arm U, as shown in Figs. 9 and 10 of the drawings.

V denotes the treadle by means of which the pressman is enabled to lift the pitman R out of engagement with the rock-arin U, and. thus leave the ii'npression-cylinder I in its elevated and inoperative position, when found necessary to prevent the packing of the impression-cylinder from coming. in contact with the inked surface of the form carried in the press, 'lo effect this tripping or throwing, of the iinpression-cylinder out of its operative condition automatically, as hereinbefore stated, I employ mechanisms controlled by the paper passing from the feeding-machine to the printing-press, which mechanisms consist, essentially, of a lever actuated automatically to trip the cylinder-depressing mechanism, an arm movable to a position torestrain said action of the lever, a feeler normally opposed to the passage of paper to the press and yielding to contactwith said paper, and mechanism actuated by the normally disposed feeler to throw the aforesaid lever out of its restraining position. All of said automatically-con trolled mechanisms aresusceptible of many modificationsof the details of construction, and I therefore do not limit myself. strictly to the construction and combination of the component parts of the mechanisms shown in the annexed drawings, in which a denotes a bellcranlc pivoted to the lower portion of the press-frame and having on one end a roller (1, by which it bears on the under side of the free end of the pitman it. (See Figs. 9 and 10.) The other arm of said bell-crank is connected by a rod a to another bell-crank l), pivoted to a suitable support on the press-frame and connected by a rod Z) to a third bell-crank 0. (See Figs. 2 and 3.) This latter bell-crank is connected by a rod 0 to a lever (1, which is pivoted at one end to a suitable bracket fastened to the door or preferably to the bottom of the interior of a shielding-box W, rigidly secured to the floor. The described connection of the lever (Z with the first-mentioned bell-crank a allows the pitman R to be thrown out of ene'z'igmneut with the rock-arm U by the movement of said lever in one direction, which movement is produced automatically by means of a suitable spring (Z forcing the lever in said direction. To restrain said lever from said action and maintain the impressitin-cylinder of the press in operation, i employ an arm 6, which abuts with its free end on a shoulder (Z on the said lever. This arm is attached to and controlled by a shaft 6', disposed at right EH1 gles to the plane of the movement of the le-- ver and mounted in suitable bearings, preferably on the walls of the box XV. To the said shaft is also attached another arm 6 to the free end of which is pivoted a roller disposed over a rotary cam f, secured to a shaft f, which is parallel with the shaft 6' and mounted in hearings in the sides of the box W. The shaft f receives motion by means of a gear-wheel f rigidly mounted thereon and meshing with a pinion f fastened to a con nter-shaftf, to which motion is transmitted by a gear-wheel f secured thereon and meshing with a pinion g on a parallel shaft g, which receives motion from one of the dliving-gears of the printing-press, which gear meshes with a gear g fastened to the shaft g, as indicated by dotted lines in Fig. ii of the d rawinns. To the shaft f is fastened a cam d disposed to engage a roller d, pivoted to the lever d. This cam is shaped to force the lever (1 back in opposition to the spring (Z during a period of the rotation of said cam. The lever is thereby thrown into a position to allow the restrainine-arm e to engage the shoulder (Z, and thus lock the lever in its position.

'lransversely over the paper-conveyers U is a rock-shaft 7L, mounted atiisends on brackets 7L rising from shoes 7L2, which ride on plates 71, fastened to the side rails F. Said plates are provided with longitudinal slots It for the reception of the bolts 71., by means of which said shoes are adjustahly clamped on the plates for the purpose hereinafter explained. The recleshaft It has at'tacl'ied to one of its ends an arm hhthe freeend of which is connected by a rod 6 to the arm 6 and serves to transmit motion to the rock-shaft. To this rock-shaft is fastened a linger r1, which is disposed, preferably, at ornear the ccnte r of the width of the paperconveyers and ex.- tends toward the receiving end of said eonveyers. Under the free end of said linger is a feeler i, formed, preferably, of a verticallyelongaied light metal plate pivoted intermcdiato its ends to an arm fastened to a rod j, which is parallel with the aforesaid rock-shaft and firmly secured to snitablesupports, which may be either formed on the supportiinrbracl ets 7i of the rock-shaft h, as shown in Fig. (J of the drawings, or formed separately and mounted on the shoes h as represented in Figs. L and 5 of the drawings. Either of said constructions affords the desired adjustability of the rock-shaft h and rodj in relation to their distance from the impressioncylinder of the priniingpross.

The upper end of the feeler '11 is formed with a shoulder 1?, presen ed toward the free end of the [bigger hand istcrminatcd with an upwardly-extending guard 21, which is inclined from the finger 2' to allow the latter to descend and push the feeler into position to allow the shoulder f thereof to engage the top of the finger, as illustrated in Fig. +i of the drawings, and when in the said position the lower end of the feeler is in the plane of the paper-conveyers C. This is the normal position of the feeler assumed when the paper-conveyors C fail to deliver paper to the printingprcss.

To harmonize the action of the paper-feedinn machine with the movement of thoprinting-press, i provide means for coupling together the actuating-gears of said machine and press. This I prefer to accomplish by fastening on the shaft f a ratchet-wheel d and mounting loosely on said shaft at the side of the ratchet-wheel a gear 01 to which is pivoted a pawl d adapted to be thrown in and out of engagement with said ratchet- Wheel. The gear 61 engages a gear (:1 rigidly secured to a shaft d mounted in bearings in the sides of the box W. To the shaft d is attached a miter-pinion e meshing with acorresponding pinion e secured to a shaft 6 which is extended to the paperfeeding machine B,Where it is provided with another miter-pinion e meshing with a corresponding pinion e on the lower end of a vertical shaft 6 journaled in suitable hearings on the frame of the feeding-machine. The upper end of the shaft 6 has attached to it a miter-pinion 6 by means of which it transmits motion to a suitable gear of the actuating mechanism of the feeding-machine.

The object of employing the described pawland-ratchet connection for transmitting motion from the shaft f to the actuating mechanism of the feeding-machine is to permit the printing press to be operated without the feeding-machine when so desired. It is obvious that other suitable clutching devices may be used in place of the pawl and'ratchet.

The operation of the described mechanisms for automatically tripping or throwing the impression-cylinder out of operative position is as follows: In starting the printing-press the shaft f receives rotary motion, which causes the cam d to force the lever 01 into the position shown in Fig. (5 of the drawings to release the pitman R and allow it to produce the necessary intermittent lifting of the impressioncylinder. If at that time the paper passes 1 under the feeler i, the finger t is free to oscillate, and thus the rock-shaft it allows the arm e to be rocked by the cam f. The arm e, movingin unison with the arm 6 is brought at proper intervals into position to abut against the shoulder 01 on the lever cl, and thus retain said lever in the aforesaid position while the cam 01 is turned from the lever. Hence the impression-cylinder continues its vertical movement. If, however, the paper fails to pass under the feeler i, the shoulder '6 thereof catches onto the top of the finger, and thereby arrests the motion of the rock-shaft h in a position which prevents the arm 6 from engaging the shoulder on the lever d, as shown in Fig. 4 of the drawings, and thus allows said lever to be thrown by the spring 01 into a position which throws the pitman R out of engagement with the rockarm U,and thus trips the impression-cylinder I, so as to preventits being depressed.

In addition to the described devices for controlling the vertical movement of the impression-cylinder of the printing-press I prefer to employ means for automatically shifting the driving-belt or stopping the driving mechanism of the printing-press, which automatic stopping devices may also be used without the before-described cylinder-controlling mechanism, especially when to be used in connection with the class of printing-presses usually termed drum-cylinder presses. For this purpose I employa lever is, preferably at the side of the before-described lever 01 and pivoted in the same manner. This lever is is connected by a rod is to one of the arms of a bell-crank 10 whose other arm is connected by a rod 1 to a horizontal extension l of the ordinary belt-shifting lever Z as more clearly shown in Fig. 11 of the drawings. The said shifting-lever is provided with the usual fork Z by which it engages the belt to shift it to and from the driving-pulley O of the printing-press. A spiral spring m, surrounding the portion of the rod 70 adjacent to the lever 70 and abutting at opposite ends against the inner side of the end wall of the box W and against a collar adjustably connected to the rod, serves to force said lever in a direction to cause it, by means of the rod k and its described connection with the lever Z to throw the belt 0 onto the loose pulley.

To throw the belt onto the driving-pulley 0 I attach to the "shaft f, hereinhefore described, a cam 8, similar or corresponding to the cam d said cam .9 serving to force the lever back in opposition to its actuating spring on during part of the rotation of the shaft f. To look the lever in said position after the cam has turned from it, I attach to the shaft 6, hereinbefore referred to, a restraining-arm 'n and attach to the side of the lever 1c two shoulders n and n arranged with a space between them and in positions to permit the free end of the arm 'n to abut against said shoulders one at a time. Inasmuch as the arm n is attached to the same shaft e to which the arms e and e are attached it is obvious that said arms move in unison, and all are governed by the movement of the rockshaft 71, and therefore the arms n and e may be formed in one piece, if desired, and likewise the two cams s and (1 In order to al low the arm 6 to release the lever 01, and thereby tripthe impression-cylinder without allowing the arm n to release the lever 70, and thus obviate stopping the motion of the press While the impression-cylinder is retained in inoperative position, I attach to the rockshaft it two or more fingers 0 0, which extend toward the impression-cyliuder I or delivering end of the feedboard. The free end of each of these fingers has a lug 0 projecting from its side, and under this lug is a feeler r, pivoted to an arm r, fastened to the rod j, hereinbefore described. 1 The lower end of said feeler is normally in the path of the paper passing to the impression-cylinder, and the upper end of the feeler is formed with a downwardly-extending guard 1*, which is inclined from the free end of the finger 0 to allow the latter to descend and to push by means of its lug 0 into further inclination the feeler tilted by the passage of paper-to the feed-gages v of the press. The feeler 4'' has its upper end normally directly under the lug o of the finger 0 and is of a length to arrest the downward movement of the finger 0 about midway its stroke by the lug 0 coming in contact with the top of the feeler when the feeler is in its normal position, as represented in Fig. 5 of the drawings. The aforesaid arresting of the stroke of the finger 0 limits the movement of the rock-shaft h correspondingly, and thereby causes the restraining-arm n to be held with its free end in a position to pass through the space between the two shoulders n and n on the lever 70. ing by that time been turned from the lever allows said lever to be actuated by the springs m, which causes said lever to move the beltshifting lever Z and thereby throw the belt onto the loose pulley, and thus stop the mo tion of the printingpress. To effect this more positively, I attach a brake-shoe t to the free end of a lever 25, pivoted to a bracket fastened to the floor, and connect said lever to the rod 76 by a chain or rod i so as to apply the said brake-shoe to the periphery of the fly-wheel it of the printing-press simultaneously with the aforesaid shifting of the driving-belt onto the loose pulley. It will be observed that this stopping of the printingpress is effected whenever the paper fails to pass to the gages v and to a position to allow the usual grippers of the impression-cylinderI to seize the advance edge of the paper. Consequently said stopping of the press prevents the bare face of said cylinder from being turned to a position to come in contact with the inked form in the press. This automatic stop mechanism may be applied to.

drum-cylinder presses or any other cylinderpresses.

I prefer to employ at least two of the aforesaid feelers r, placed in position to be actuated by the portions of the advance edge of the sheet near the corners of said sheet. By this arrangement the press is caused to be stopped in case the paper-feedin g machine delivers a sheet having a corner portion torn off or turned over, which sometimes occurs in handling the paper in the operation of depositing it in the feeding-machine. This stopping of the printing-press is due to the fact that the grippers of the press overlap the advance edge of the sheet only about one-quarter of an inch, and it is therefore necessary that both ends of said advance edge are carried to the feedgages v of the press. Consequently if a corner port-ion of the sheet is torn off or turned over, as before said, the feeler 1" at said mutilated or disarranged portion of the sheet remains undisturbed from its normal position during a sufficient period to cause the hereinbefore-described automatic beltshifting mechanism to stop the press. For this reason the two feelers r 0" must be placed in proximity to the line of the feed-gages Q; '2), and in order to permit said feelers to be placed in their proper positions they are sustained ad- The cam s havjustably in relation to their distance from the impression cylinder or gages v o of the press. It is for this purpose that the rock-shaft h and feeler-su pporting rodj are mounted on brackets attached to shoes 71 adjustably secured to the plates 7L as horeinbefore described.

When my invention is applied to a tworevolution printing-press in the manner herein described, the impression cylinder is tripped without stopping the motion of the press, and thus accomplishes one of the most desired objects of my invention. This effect is produced in the following manner: The printingpress having been set in motion causes the shaft f to receive rotary motion. The corresponding rotating cam f on said shaft rocks the arm (2 which imparts motion to the rock-shaft h, whose motion is freed from impediment by the paper passing under the feeler i and abutting against the feelers r '1", and thereby tilting said feelers to allow the fingers 2' and 0 on said shaft to freely rock, as represented in Fig. 6 of the drawings. The rotating of the shaft f causes the cams d and s to push the tripping-levers d and back in opposition to their actuating-springs to maintain the printing-press in perfect operative condition. Said levers are retained in their said position by means of the arms a and n, which oscillate synchronously with the arm e and are carried at properly-timed intervals into position to engage the shoulder d on the lever d and the shoulder n on the lever 7r, said engagement taking elfectin time to prevent the lovers from being moved by their actuating-springs, while the cams d and s are turned from the levers.

In case the paper-feeding machine B fails to deliver a sheet at the proper time or misfed sheets are diverted from the path to the conveyers C by an automatic switch, as illustrated in my Letters PatentNo. 625,094, dated May 16, 1899, the feeler 2" remains dormant in the path of the paper. The descending finger 2' then strikes the inclined guard i on the upper end of the feeler '6 and tilts said feeler out of the way of the farther descending finger. The feeler, immediately returning to its normal position, causes the shoulder thereof to engage the top of the finger and prevents the same from rising, as shown in Fig. 4 of the drawings. The resultant stopping of the rock-shaft h causes the arm e to be retained in its raised position. The restraining-arms e and n, being held in corresponding position, prevents the arm 9 from engaging the shoulder d on the lever 11, and thus allows said lever to be actuated by the spring (1 to trip the impression-cylinder and retain it in its elevated position. The other arm n is at the same time in position to engage the shoulder n on the lever is, and thus locks said lever, so as to prevent it from shifting the belt from the driving-pu1ley. Consequently the press is maintained in motion while the impression-cylinder is tripped. In case the paper does pass under the feeler 71,

but fails to push the feelers 1" out of their normal positions, the lugs o of the descending fingers come in contact with the tops of the feelers 'r r, as represented in Fig. of the drawings. This contact limits the movement of the rock-shaft h, soas to cause the arms 6 and n to be held in position to prevent either of them from engaging the shoulders on the levers d and k. The arm n, being in position to pass through the space between the two shoulders at and n on the lever it, allows said lever to be moved by the spring m, and thereby shift the belt onto the loose pulley, and thus stops the motion of the printing-press.

The herein-described automatic stop-motion is also applicable to printing-presses which receive motion from an electric motor, as represented in Fig. 1 of the drawings, in which M designates said motor, which may be of any suitable and well-known construction, not necessary to be illustrated in the present case. By means of suitable gears, as indicated at l, 5, and 6, motion is transmitted from the motor to the usual gearwheel g on the press. 1 and 2 represent the two poles of a switch placed inthe circuit which supplies the required electric current to the motor. The pole 2 is represented in the form of a metallic contact-piece attached to the upper end of a post 3, secured in the box W, and the pole l is of the form of a spring-arm attached to the aforesaid box and insulated therefrom, as shown at 7, and carrying on its free end the contact piece facing the pole 2 and forced from the same by the action of the spring-arm. This switch is placed in such a position in relation to the lever is that said switch is caused to be closed by said lever pushing the pole 1 into contact with the pole 2, when the lever is forced in opposition to its actuating-spring m and to a position to allow the restraining-arm n to engage and lock said lever, and thereby maintain the aforesaid switch closed and the motor M in operation.

In case the feelers r are left in their normal position by failure in the delivery of the paper to the press in the manner hereinbefore described the restraining-arm n is caused to release the lever is, which is then actuated by the spring in and thrown into a position which relieves the pole 1 from the pressure of the lever, and thus breaks the circuit to which the motor M is connected. Consequently the press is stopped under such circumstances.

I do not limit myself to the form of the electric switch shown in the annexed drawings, inasmuch as it is susceptible of many modifications.

In the operation of printing-presses it has been found essential to provide means for stopping the press by the man in charge while standing either at the feeding-machine for observing the operation or for adjusting it or at the delivery end of the press to detect any accidental defect in the prints. To

afiord such control of the press at either end as a prop 8, pivoted at its footto a firm foundation and having its free end adapted to engage and release the under side of a shoulder 9,'projecting from the side of the rockarm 6 as shown in Fig. 13 of the drawings. A rod 10 is attached to the detent 8 and extended to the feeding-machine B, where it is arranged convenient of access for manipulation. Another rod 11 is extended from the detent' 8 toward the delivery end of the press, where it is connected to one of the arms of a bell-crank 12, which is pivoted to the press-frame and has its other arm connected by an upwardly-extending rod 13 to one of the arms of a bell-crank 14, which is also pivoted to the press-frame and has atper end of said detent during the descent of 1 said rock-arm, which is thereby arrested in a position which causes the restraining-arm n to release the lever k and allow the same to be actuated by the spring m, which movement of the lever stops the motion of the press, as hereinbefore explained. Inasmuch as the feeding-machine derives its motion from the same mechanism which actuates the press it is obvious that said feeding-machine is stopped simultaneously with the stopping of the press.

What I claim is- 1. The combination, with a printing-press, its actuating mechanism and means for automatically feeding the paper to said press, of a lever for starting and stopping said mechanism, mechanism moving said lever to its starting position, means for automatically throwing said lever to its stopping position, an arm movable to and from a position to retain the lever in its starting position, a feeler disposed to be actuated by the paper in transit to the press, and mechanism controlled by said feeler in its dormant position to release the lever from the retaining-arm.

2. The combination, with a printing-press, its driving-pulley and belt, a belt-shifting lever,"and means for automatically feeding the paper to said press, of mechanism actuating said lever to carry the belt on the drivingpulley, means for automatically actuating the IIO lever to shift the belt onto the loose pulley, a brake actuated by said lever to check the momentum of the press simultaneously with the shifting of the belt onto the loose pulley, an arm adapted to lock the lever to maintain the belt on the driving-pulley, a feeler disposed to be actuated by the paper in transit to the press, and mechanism controlled by said feeler in its dormant position to release the lever from the loehing-arm.

3. The combination, with a printingpress and automatic feeder, of a lever controlling the action of said press, a spring forcing said lever in one direction, mechanism forcing the lever intermittently in the opposite direction, means operating alternately with said meelr anism to restrain the action of the lever under the in tlnence of the spring, and feelers ac tuated by the paper in transit to the press and controlling the aforesaid restraining means.

l. The combination with a printing-press and automatic paper-fecder, of a lever controlling the action of said press, a spring forcing said lever in one direction, a cam pushing the lever in the opposite direction, a rockarm timed in its movement to operate on the lever alternately with the cam and restrain the movement of the lever under the influence of the spring, and feelers actuated by the paper in transit to the press and controlling the action of the rock-arm.

5. The combination with a printing-these having a verticallymovable impression-cylinder, means for transmitting motion to said press, means for intermittently depressing the im pressiotrcylinder, and means for feeding the paper to the press, of a rook-shaft disposed transversely over the feeding-path of the paper, fingers extending laterally from said shaft, feelers under the free ends of said fingers and opposed yieldingly to the passage of the paper to the press and limiting the movement of said rock-shaft to di'lferent degrees, mechanism controlling the vertical movement of the impression-cylinder and actuated by one of said degrees of movement, and mechanism controlling the motion of the press and actuated by the other of said degrees of movement as set forth.

6. The combination with a prii'iting-press having a vertically-movable impression-cylinder, means for transmitting motion to the press, means for intermittently depressing the impression-cylinder, and means for feeding the paper to the press, of a rock-shaft disposed transversely over the feeding-path of the paper, feelers disposed in proximity to the feed-gages of the press and to be actuated by the paper in transit to said gages, a similarly-actuated feeler in the path of the paper remote from the impression-cylinder, fingers extending from the aforesaid lOGleI- shaft to the aforesaid feelers and limiting the movement of the rock-shaft to different degrees by the action of the different feelers, mechanism controlling the vertical movement of the impression-cylinder and aetuated by the degrees of movement controlled by the remotely-disposed feeler, and mechanism controlling tne motion of the press and ac tnated by the degrees of movement controlled by the feelers situated in proximity to the press-gages as set forth.

' 7. The combination with a printing-press having a vertieally-movable impression-cyh inder, means for transmitting motion to the press, means for intermittently depressing the impressiotrcylinder, and means for feed ing the paper to the press, of a rock-shaft disposed transversely over the feeding-path of the paper, separate lingers extending respectivoly forward and rearward from said shaft, a feeler disposed under the free end of the IQttl'Wztl'tlly-(IXliHll(lint}; finger to be actuated by the paper in transit and normally retaining the finger in its extreme depressed position, similarly-actuated feelers under the free ends of the fan-wardly-extending lingers and normally arresting said lingers in partly-depressed position and actuated by the paper in transit to release said fingers for further depression thereof, a rotary cam, a rock-arm transmitting motion from said cam to the aforesaid rock-shaft and governed by the aforesaid limitations of the movements of said shaft, a lever movable to a position to lock the impression-cylinder in its elevated position, a lever movable to stop the press and restraining-arms actuated by the aforesaid rock-arm to control the positions of said lovers.

8. The combination With a priiiting-press having a vertically-movable impression-cylinder, means for transmitting motion to said press, mechanism intermittently depressing the impression-cylinder, and means for feeding the paper to the press, of a lever movable to a position to lock the impression-cylinder in its elevated position and provided with a loehingshoulder, a lever movable to stop the motion of the press and provided with two locking-shoulders and with a passage between said shoulders, two restrainingarms actuated in unison and to positions to either engage simultaneously the shoulder of one of the locking-levers and one of the shoulders of the other of said levers, or rele said shoulders, or engage solely the other shoulder of the stopmtotion-locking lever, mechanism actuating said restrainingarms, and feelers disposed to be actuated by the paper in transit at different distances from the press and controlling the actuating mechanism of said restraining-arms to trip the impression-cylinder by the feeler disposed remote from the press and simultaneously maintain the press in motion by the feeler nearest the press.

9. In combination with the paper-con veyers and a roclcshaft extending transversely over said conveyors, a finger extending from said rock-shaft toward the receiving end of the conveyors, and a feeler consisting of a vertically-elongated plate pivoted intermediate its ends on an, axis parallel with the rock-shaft,

said plate having its lower end normally in the plane of the conveyers and its upper end formed with a shoulder presented toward the free end of the aforesaid finger and terminated with an upwardly-extending guard inclined from the finger to allow the latter to descend and push the feeler into position for engaging by its shoulder the top of the finger as set forth and shown.

10. In combination with the paper-conveyers and a rock-shaft extending transversely over said conveyors, a finger extending from said rock-shaft toward the delivery end of the conveyers and formed With a laterally-projecting lug on its free end, and a feeler consisting of a vertically-elongated plate pivoted intermediate its ends on an aXis parallel with the rock-shaft and having its lowervend normally in the plane of the paper-conveyers, and its upper end formed with a downwardlyextending guard inclined from the free end of the aforesaid finger to allow the latter to descend and to push by means of its lug into further inclination the feeler tilted by the passage of paper underneath it as set forth.

11. The combination with a printing-press having a vertically-movable impression-cylinder, the driving-belt, and conveyers delivering the paper to said press, of mechanisms for tripping the impression-cylinder, a lever actuating said tripping mechanism, a lever provided with means for shifting the belt onto the loose pulley, springs forcing said levers into action, cams forcing the levers in opposition to the springs, arms restraining the actions of the levers while released from the cams and movable to three different positions, one of said positions engaging both levers simultaneously, the second position releasing said levers and the third position engaging the belt-shifting lever alone, feelers actuated by the paper in transit to the press, a rockshaft disposed over the conveyors, fingers attached to said shaft and controlled in their action by said feelers, and means for transmitting motion from the rock-shaft to the aforesaid restraining-arms as set forth.

12. The combination with a printing-press, and mechanisms controlling the action of said press, of a manually-operated detent engaging said mechanism and arresting the action of the press.

13. The combination with a printing-press, of a lever for starting and stopping said press, means actuating said lever to stop the press, mechanisms forcing said lever to a positionto start the press, a restraining-arm locking said lever in said position, a rock-arm con" trolling said restraining-arm, a detent movable to a position to check the motion of said rock-arm, and manually-operated means extending from said detent to afford control of the action of the press as set forth.

TALBOT O. DEXTER. [L. s.]

Witnesses:

G. V. B. LEITOH, M. E. MORRISON.