US1691656A - Printing press - Google Patents

Description

Nov. 13, 1928. 1,691,656

- w. KELLY I PRINTING :PRESS Filed June 13, 1925 6 Sheets-Sheet 1 W w/m m Nov. "13, 1928. 1,691,656 W. M. KELLY PRINTING PRESS Filed June 15, 1925 6 Sheets-Sheet 2 v 1,691,656 W. M. KELLY PRINTING PRESS Filed June 15,19z5 6 sheets sheet 3 Nov. 13, 1958:

w. M. KELLY PRINTING PRESS 6 Sheets-Sheet 4 Filed June 13, 1925 Nov; 13, 1928. 1,691,656 I w. M. KELLY PRINTXNG PRESS Filed June 13, 1925 6 Sheets-Sheet 5 Nov. 13, 1928. v 1 1,691,656

w. M. KELLY PRINTING PRESS Filed June 13, 1925 Y 6 Sheets-Sheet 6.

Paitenied News, 1923.

i E S mum in. KELLY; or wEsrnELn, fiE EBSEY, ASSIGNOR To mum: .TYrE' rarnr was:

nonnnnns eom'mw, or ,JERsEY' our, NEW JERSEY, A conronnrronornnwz JERSEY.

rnrnrme rnn'ss.

Application filed June 13, 1925. Serial Ho. 36,9 44.

The present invention relates to printing" presses, and particularly toprinting presses of the bed-and-cylinder type.

j 'In my copending applicatmnSer. No.

'- 5 738,677, filed Sept.-19, 1924,- thereis shown the sheet delivery and'jogger mechanisms;

and described an automatic jobber press in- I eluding an oscillating'cylinder' and a bed re-' ciprocating in an inclined; plane, together with associated sheet feeding and delivering mechanisms. The sheet feeding and delivering mechanisms are mounted on a frame ,which can be moved away from the press at will to provide access to the opposed parts. This machine is equipped with an electric motor drive, automatic impression "operating means, sheet detector mechanism for tripping the impression and, if desired, stopping the press When a sheet is absent from the feed board when due, means for double rolling or double inking the type for each sheet printed,

neumatic devices for lifting sheets singly rom alpile and transferring them to sheet l forwarding and. controlling devices by whichthey are accurately fed to the cylinder, jogger mechanism associated with the delivery table,

provements in the machine of said copending application, and particularly :-in the motor drive for the press; in the motor controlling means; in the sheet-detector-controlled mechanism for tripping the impression; inthe sheet delivery mechanism; and in the jogger mechanism. These improvements are shown I in the accompanying drawings with themachine illustrated in the applicationreferred to, but it should be understood that certain of them, particularly the sheet'delivery mechanism and the jogger mechanisms, -are.by no means limited in their application to the particular .type of press illustrated.

Referring to the accompanying drawings: Fig. 1 is a side elevation of a printing press and associated sheet-handling mechanism, illustrating improvements effected by the present invention. 1

. Fig. 2 is a similar view ona larger scale,

and only the upper portions of the feeder and various other mechanisms, all of which but showing only a fragment of the press.

mechanismsg'i various elements of the sheet feeding mechanism, withwhich the presentinventlon is) not concerned, being omitted.

Fig. 3;.isa fragmentary longitudinal sectional View, illustrating more particularly 3 ,Fig. 4 is a planview of the sheet delivery,

the delivery table and the jogger mechanism;

Fig. 5 is asectional view taken on the line viewof the mechanism of Fig. 6 I

Fig. 8 is a longitudinal sectional view through one of the tape driving pulleys, illustrating particularly the construction of the Fig. 9 isa detail view showing one of the rollers which are adapted to engage a sheet onthe impression cylinder;

Fig. 10 is a sectional plan view showing the driving connection; and

Fig. 11 is a sectional elevational view sho'w ing a stripper finger to a larger scale. J

It is not necessary to describe completely and in detail herein the complete machine. with which the present improvements are associated,- as this machine is fully described in the fcopending application referred to above and the present improvements relate .to only a relatively few elements thereof;

Howeventhe description will be full enough and the drawings will show suficient of the machine to give a clear and thorough under- 1 standing of the present invention...

The base or frame of the press consists of a hollowcasting or housing 10 having a nearly vertical back and a front that is inclined-to the'vertical at, an angle of about 30, except near the bottom where a forward projection is provided.

The bed 11 is reciproca-ble on ways secured to the front inclined face of housing 10; the

cylinder 12 is journ-aled in housings 13 bolted The f'eede'r frame 15 is slidably applications I The first improvement relates to the drive of the press.

For operating the machine an electric motor 18, mounted to the rear and at one side of housing 10, is connected to a main drive shaft by a belt 20 which passes over a small pulley 21 on the armature shaft of the motor and over a large pulley 22 on the drive shaft. Drive shaft 19 has secured thereto a pinion 23 which meshes .with a large spur gear 24 keyed on the inner end of a shaft 25 which is journaled in housing 10; In alignment -with shaft 25 is a shaft 26 carrying on its inner end a disk 27 which faces gear 24 and is rigidly connected thereto by a wrist pin. A pitman connects this wrist pin'with the under side of the bed. To maintain a uniform tension on belt 20 there is provided a heavy roller 28 resting on the upper run of said belt and carried on the outer endof an arm 29 swung on shaft 19. .Iournaled in housing 10 in front of shaft 25 is ashaft 28 on the inner end of which is a pinion 29 in mesh with gear 24. Shaft 28 is operatively connected by spiral gearing 30 with an inclined shaft 31 which drives the sheet handling mechanism mounted on frame 15. v p

In mycopending application drive shaft 19 is located in front of shaft 25, necessitating a long belt between the motor and said shafton the outside of housing 10. In the construction according to the present invention drive shaft 19 is located at the rear of shaft 25 and close to the motor, so thatonly a. comparatively short belt is needed, occupying a small space at-t-he' rear side of the housing, where it'is out of the way of the press mecha nism and the attendants. r

Due to the weight of the bed and its movement in an inclined plane, it has been found that the bed willgravitate to its'lowest positron after current has been cut off from. the

motor. It is desirable to maintain the bed and the other operating parts of the machine 1n substantially the positions they wereat the instant current was cut off. This result 1s effected in accordance with the present invention by providing auxiliary holding means operating upon some moving element and rendered effective when the motor current is interrupted. In ,the form illustrated (Fig. 1), this holding means comprises a brake band 32 embracing a pulley 33 on drive shaft 19, anchored at one'end to the frame; and con nee-ted at its other end to. a-screwrod 34 which ispivoted to one arm of a bell crank lover The other arm of bell crank 35 1s rigid with a weighted rod 36 to Which-is connected the plunger of a solenoid 37. 1 The circuit of the solenoid is controlled by the motor switch, so that the solenoid will be enhandling apparatus insubstantially the positions they occupied at the instant the stopping operation was performed.

The second feature of the present invention relates to the control of the impression mechanism.

In my copending application there are fully described and shown mechanism for throwing on and off the impression and sheetdetector-controlledmechanism for tripping the impression operating means. Parts of said mechamsms are indicated in Fig. 1 and will be referred to only 1n a general way herein, but sufiicientl'y to make clear certain modifications and improvements effected by the present invention.

Theimpression is thrown on and off periodically by means of a train of mechanism including a cam o erated bell crank 38, a link 39hav1ng a hoo ed end engaging over a pm on the upper arm of bell crank 38, a' shaft 40 carrying an arm to which link 39 is pivoted, and links 41 connected at their lower ends to arms on shaft 40 and at their upper endsto eccentric bushings 42 in which the. cylinder trunnions are journaled. This impression operating means is tripped or ren-' dered inoperativeby means of a bell crank 43 pivoted under link 39 and having an, arm

adaptedto engage the under side of said link and lift the hook end thereof from the pin on bellcrank 38. A pin 43 is provided to limit the movement of hell crank 43 in one direction. Bellcrank 43 is controlled by sheet detector mechanism mounted on the frame 15, so as to trip the impression operating mechanism when a sheet ,is absent from the feed board when due. The connections between the bell crank-43' and the sheet de-' te'ctor include a link 44 pivoted to the depending arm of bell crank 43 and having a semiclrcular notch in its other end engaging a laterally projecting pin 45 on a pivoted arm 45,

link 44 being slidably supported in a bearing 7 pressed, upon failure to feed a s eet or to feed I atedlever 51. Under normal operating conit properly, by means of a dog 50 which is carried on the free end of a periodically oper-- no i struction.-

with rod49 by the operation of the sheet detector, when lever 51 is depressed but when a sheet is not'present on the feed board when due'dog 50-eng-ages rod 49 when lever 51 is "depressed, and hence rod 49 is moved downwardly tripping-the impression operating means; p

Themechanism just described for tripping the impression operating means is similar 1n all respects to the corresponding parts more fully described and shown in my copending application, except that in the mechanism of the copending application the rod 44 has a hook end engaging over the pin on pivoted arm 45, whereas accordin to the present invention'this rod is slidably supported by a fixed bearing and has a one-way connection with arm45, simply having its end butting against the pin on said arm. With this modification the feeder frame on which arm 45 is mounted can be moved out of and into operative position without manipulating the link connection d4 to unhook-its end from said pin, as was necessary with the former con- In order to hold the impression operating means trippedyas when the feeder .is moved to inoperative position, there is provided a pawl 52 pivoted to slide bearing 46,- normally turned back to the position shown in Fig. 1 but adapted'when swung to the opposite position to engage a notch 53 in link 44 when the latter'is in impression tripping'position.

Inmy copending application the manually operable switch box for themotor is mounted on the feeder frame 15 at the side and near the top thereof, and the automatically opera able plunger switch is mounted on the feeder framedirectly below the lever 48, in such position that its plunger will be operated to open themotor circuit by a dog 54 depending from lever 48 when a sheet is not present. on the feed board when due. To provide for movements of the feeder towards and from i the. press it is necessary to use flexible extensible conductor cables connecting the switches onthe movable feeder frame with the station ary motor. According to the present invention the manually operable switch and the automatically operable plunger switch are formed as a unit and mounted in a fixed position with respect to the motor. As will be observed from Fig. 1, the manually operable switch 55. and the automatic'plunger switch 56 form a unitwhich is mounted'at the-side of the ink fountain. To operate the plunger I switch there is provided a lever 57 fulcrumed on the feeder frame .15. "One end of lever 57 is adapted to'project under the plunger of switch- 56 when the feeder is in its operative and the other end extends under the lever 48, so that if the dog 54: is in its operativeor depending position when lever 48 is depressed, upon failure to .feed a position,

The third feature of the present invention relates to the delivery mechanism.

The sheets are fed from atable 58 supported for up and'down movement in frame15,

devices being provided for raising and lowera ing the table manually or for raising it automatically to preserve the level of the sheet pile substantially constant. The sheets are takenfrom table 58 singly and forwarded on to feed board 59 by means of pneumatic devices including rotatable. suction wheels (not shown) on shaft 60, and are conveyed along the table 59 to cylinder'12 by means of tapes passing over pulleys on shaft 61, suitable guiding, registering and controlling devices being provided to maintain the sheets in po- J sition during their passage over the feed board and to feed them accurately to the impression cylinder. Thesesheet feeding and controlling devices are'fully shown and described in iny copending application and-as the present invention effects no modifications thereof, it is not desirable to describe them herein in detail.

In the construction shown and described sheets are stripped from the cylinder by stripper fingers and coacting rollers and are delivered directly therefrom on to a delivery board locatedvertically over the feed board. In the construction according to the present invention the sheets are taken from the stripers by reciprocating grippers which operate etween a set of delivery tapes, the grippers receiving the margin of the sheet as it is projectcd from the cylinder by the action of thestripperfingers, grasping said; margin, re-

in my copending application the printed moving the sheet positively from the cyline M5 der and finally opening topermit the tapes to forward the sheet to the delivery table. The

sheets are thus positively and surely removed by'the grippers from the cylinder, the grippers having a sufficient throw to remove the sheets entirely from the cylinder before opening topermitfurther forwarding thereof bythe tapes.

The feeder frame 15 includes two side castings of'the farm shown in the side view (Fig. 1).. castings have bolted thereto near their ends upstanding which are curved towards the cylinder 12.

' Rotatable in horizontally, ahgned bearings The forward extensions of these brackets 62, the upper ends of i near the upper ends of brackets 62 is a shaft 63. On the outer ends of shaft 63 are arms .64 which are yieldingly. held against stop pins 65 by springs 66. On the shaft 63 just I inside brackets 62 are arms 67 which have their ends connected by a rod 68. Rotatable on rod 68 are a pair of rollers 69 which engage the end disks of cylinder 12 when the feeder frame is in its operative position. Ad-

justably mounted on rod 68 inside rollers 69 are a pair of brackets 70, each of which is formed with spaced ears between which is pivoted an arm 71 (Fig. 9). Rotatable on arms 71 are rollers 72, which are adapted to engage a sheet on cylinder 12. Arms 71 are allowed a slight pivotal movement between limits determined by engagement of the uper and lower corners thereof with brackets 0, bein yieldingly held by a spring pressed plunger 73 against upward movement. Rollers 69 are thus held in yielding engagement with the cylinder disks by the action of springs 66, and the rollers 72 are independently held in engagement with the sheet on 2 the cylinder by the action of spring pressed plungers 73. The slight pivotal movement-of rollers 72, against the action of the spring pressed plungers, thus provided independently of their movement about the axis of shaft 63, renders the rollers 73 very sensitive to any change or irregularities .inthe surface "of the sheet on the cylinder, permitting them to yield to any such irregularitiesinstantly and without strain. It will be noted-that the axis of rollers 72 isfurther from the axis of shaft 63 than is the axis of rollers 69. Thus when the impression cylinder is moved away from the bed to impression ofl positionland the cylinder is rotating reversely the rollers v 72 will be moved slightly off the sheet and hence permit the sheet to be freely stripped from the cylinder.

A pair of stripper fingers 75} located inwardly of rollers 72 are mounted on collars 76 which are adapted to be adjustably clamped on shaft 63. The'stripper fingers are pivoted between cars 77 formed on the collars and have tail portionson one sideof their pivots which are acted upon by spring pressed plungers 78'and engage on the other side of their pivotsadjusting screws 7 8 The stripper fingers are thus adjustable laterally for sheets of different widths and are adj ustable in vertical planes. to bring thern'into ae- -curateposition with respect to the impression cylinder. 7 The stripper fingers extend from their supporting collars in'an inclined direc tion u wardly and forwardly and then bend 1 over t e tape shaft 79, extending therefrom .00 at a slight downward inclination to the im-' pression cylinder. g

The tape shaft 79 is journaled in the upper ends of brackets 62 and is driven by abelt 1 80, which'passes-over asmall pulley 81 on the 05 projectinglend of shaft 79 andover a larger pulley 82 on a stubshaftwhichis'geared to shaft 61 by gears 61 and 82 (Figs. 2 and 3). Secured to the tops of the two side frame castings of the feeder frame 15 are brackets 84 which are tied together by a rod 85. These brackets are of identical form, each consisting'of a rear horizontal portion and a front downwardly inclined portion. Supported in. lugs on the rear portions of these brackets is a rod 85, on which are 'journaled a number of laterally spaced idler pulleys 86. Fixed on tape shaft 79 are a corresponding number of drive pulleys 87 and passing around the pulleys 86 and87 are tapes 88. Each tape includes a resilient insert consisting of a coil spring 89 having its ends secured t5 the spaced ends of the inextensible tape portion.

This inserted coil spring serves ,to maintain the tape under constant tension irrespective of any changes in distance between the axes of the driving and idler pulleys caused by ,wear, temperature. changes or other cause. It will be observed from Fig. 8 that the length of the inserted spring 89 is about equal .to a

ninety-degree .arc measured along the periphery of the driving pulley 87. Thus the pulley will engage at all times a substantial portion of the inextensible tape while the spring 89 is aassin therearound eliininatin an sli page due to/the presence of'thespring.

The margins of the sheets coming over the stripper fingers 75 pass into the throats of a plurality of pairs of grippers which are mounted on slides 90 reciprocable on ways 91. Each of the ways 91 is secured at its rear end to apairof inwardly extending tubular pro jections 92 integral with bracket 84 and is pinned at its front end to a;brack'et 93 which is'mouIited onvshaft 63 (F ig 5).

Each pair of grippers consistsof an upper rotatable finger 94 and a lower relatively sta tionary finger 95 (Fig. 5). The lower fingers I 95 are adjustably fixed ona rectangular bar 96 which is fastened by bolts 96. at. its ends to lugs on slides 90. The upper fingers 94 are integral with collars adjustable on a shaft I 97 which is supported at its'ends in bearings formed in slides 90. Shaft 97 hasfixed thereto just inside ,one'of the slides 90 an arm 98 and acting on this arm in a directionto turnshaft 97 and close the upper fingers94 on the lower fingers 95 is a spring pressedrod 99.

lit

.One end of shaft 97 extends on the outside of the corresponding slide-90, and fixed-on this end is an arm 100 on the free end of which is journaled a roller 101 and from the inner side of which-projects a pin 102. IWhen the grippers approach the-limit of their movement away from'the impression cylinder, roller 101 engages a cam 103 fixed-"on the'outside of from the lower grippers 95. When shaft 97 has thus been rotated'to open the gripper a pivoted latch 104 snaps over. the pin 102 on slide. way 91. Shaft 97 is thereby rotated .in a direction to swing the upper grippers 94' iao - arm 100 nearest being urged to, do so by a spring 105.

When the grippers approach the limit of their movement is thereby moved off the pm 102 permitting the spring pressed rod 99 to rotate shaft 97 and clamp'the upper grippers against the lower grippers or agalnst a sheet 1nserted -be-.

- action of the spring. By adjusting) tween the grippers. Trip 104 is pivoted at 106 to the outside of slideway 91 and has an integral depending'arm 107 whichis bored orbifurcated to receive athreaded stem 108 supported in the hub of bracket-93. A compression spring-109 surrounds the stem 108 between arm 107 and said hub and a nut 110 limits the movement of the arm under the nut ,110

the position of trip arm 104 may e varied to varv the position at whichthe grippers are closed or uncocked.

For reciprocating slides 90 and the grip-' per mechanism carried thereby the following connections are provided: A pair of links 111 be observed from Fig. 3 that this spur gear is driven through a train from shaft 61.

In Figs. 2, 3, and 4 the grippers 94, 95 are shown nearing the limit of their movement towards the impression cylinder, the grippers being open or cocked. In Fig. 5 the grippers have reached the limit of their movement to; wards the cylinder and have been uncooked by engagement of latch 104 with arm 105. The operation of the grippers is so timed with :respect to the operation of the pres'sthat the edge of printed sheet will have entered between the grippers an instant before they are uncocked. In this position (Fig. 5) it will be observed that the grippers extend beyond the tapepulleys 87 towards the cylinder and are positioned so as to receive the edge of a sheet directly as it is raised from the cylinderby the actionof the strippers 75. The grippers now move back from the cylinder positively carrying the sheet and when they reach the point at which the roller 101 on arm 100 engages cam 103 the sheet is entirely removed from the cylinder .g-and is lying smoothly on the tapes 88, the velocity of the tapes not exceeding that of the grippers. It

- will be observed from Fig. 5 that the gripping surfaceofthe lower grippers-95 is slightly below the top-surfaces of the tapes audit will therefore be clear that when the upper gr1ppers 94 are opened the sheet will already be "resting on the tapes and will be forwarded towards the impression cyl-' inder latch 104 engages a trip arm 104 and 5.

thereby through the passage between the ripper fingers, and projected onto the deiverytable.

The delivery table comprises a wooden rectangular board 117 which is supported at its ends onbrackets 118 secured to and projectingrearwardly fromthe top of feeder frame 15. The lower portionsg of brackets 118 are bolted to a cross bar 119 and the upper portions are bifurcated at 120 and straddle rod 85'. Screws 121 are mounted in the bi-.

furcations to clamp the brackets snugly against 'rod 85', whereby torque tending to rupture the attachment of the brackets to cross bar 119 is resisted. Board 117 rests on inner horizontal flanges 121 and is secured byclips 122 screwed in the outer ends of the brackets. V

The delivery board is equipped with an adjustable sheet stop comprising an upright board 124 having secured on its inner face an angle piece 125, the horizontal portion of which is slidable .ina groove formed in the upper face of head 117 along the longitudinal center line thereof. A thumb screw 126' is carried by the horizontal portion of;

125 and projects through a longitudinal slot in board 117 communicatin with thegroove, whereby board 124 can e adjusted and clamped at different positions.

The delivery board is also equipped with side joggers 127. These joggers are attached to the ends of arms 128 by clamping screws 129 so that they can be clamped at different angular positions with respect to said arms.

Arms 128 are pivoted on vertical axes at 129 'to projecting portions 130 of brackets 118.

Levers 131 are pivoted on the same axes as arms 128 and are formed at one endwith.

,curved slots centered on said axes. Clampscrew into arms 128. The other ends of levers 131 carry rollers which bear against cams 133 fixed onsuction wheel shaft .60, springs 134 holding the rollers against the cams. This construction permits adjustment of the joggers for sheets of different widths. To adjust the j oggers, screws 132 are loosened. and arms 128 rotated to position the; jogger pads at the desired points, whereupon the arms are clamped and then the jogger pads are adjusted to bring their faces parallel with the side edges of the sheets, by manipulating screws129.

Having thus described the invention what '10s ing screws 132 pass through these slots and is claimed as new and desired to be secured 1 by Letters Patent is:

. 1. In combination with a having a reciprocating bed an an osc1llating cylinder, receiving sheets at the lowerside of t e cylinderand printingthem-atone stroke, means for projecting the margins of the printed sheets from the cylinder during the terminal portion of the printing stroke, pers moving towardsand from the cylinder (printing press si e adapted to grasp said margins and strip the sheets from the cylinder at one end of their movement, and to open and release the sheets i at the other end of their movement,-'and means to forward the sheets through the open grippers.

2. In combination with a printing press havin a reciprocating bed and an oscillating cylin er, receiving sheets at the lower side of the cylinder and printing them at onestroke, gripper fingers projecting over the I cylinder adapted to lift the margins of the printed sheets therefrom as the cylinder approaches the limit of its printing stroke, reciprocating grippers moving towards and from the cylinder adapted to grasp said margins and strip the sheets from the cylinder at one end of their movement,-and to open and release the sheets at the other end' of their movement, and'means to forward the sheets through the open grippers 3. In com ination with a printin press having a reciprocating bed and an osci lating' cylinder, receiving sheets 'at the lower sideof the cylinder and printing them at one stroke, a set of endless tapes arranged tan-' 4 gentially to said cylinder and projecting in sheets throu h the open grippers.

proximity thereto,-strippers projecting over said cylinder adapted to lift the margins of the printed sheets therefrom as the cylinder approaches the limit of its printing stroke, and a set of grippers reciprocating between said tapes timed to graspsaid margins, strip the sheets from the cylinder and release them to the forwarding action of said tapes carry ing them through the grippers.

- 4. In combination with a printing press "open and release the sheets at the other end of their" movement, and means to forward the 5. In com ination with a, printing" ress having a bed reciprocatingin an inc ined plane and an oscillating cylinder in front of the bed, adapted'to receive sheets at the lower side of the cylinder and print them during the upstroke of the bed, a set of endless tapes arranged tangentiallyto said cylinder and projecting in proximity thereto, means for projecting the margins of the sheets as the cylinder approaches the limit of its printing stroke, and a set-,of gri pers reciprocating between said tapes time to grasp said mar gins, strip thesheets from the cylinder and release them to be subsequently forwarded by the tapes carrying them through the grip- 6. In combination with a printing press I having a-bed' reciprocating in an inclined plane and an oscillating cylinder in front of the bed, adapted to receive sheets at the lower side ofthe cylinder and print them during 7 the up-stroke of the bed, strippers projecting over the cylindervadapted to raise'the margins of-thesheets during the terminal portion of the printing-stroke, a set of grippers re-' ciprocating in a path tangential to said cylinder timed to grasp said margins and strip the sheets from the cylinder at one end of their movement, and to open andre'lease the sheets at. the other end of their movement, and means to forward the sheetsthrough the open grippers.

7. In combination with a print-ing press having an up-arid-down reciprocating bed and an oscillating cylinder in front of the bed, adapted to receive sheets'at the lower side of the cylinderand print them during the up stroke of the bed, grippers moving towards and from the cylinder timed to grasp the margins of the printed sheets and strip them from the cylinder movement, and to open an at the other end of their movement, and means to forward-the sheets through the open grippers. v M a 8. In combination with a printing press having an up-and-down reciprocating bed a5 one end of their bed, a-da ted to receive sheets at the lower release the sheets and an oscillating cylinder in front of the. g

side of t e cylinder and print them during the up stroke of'the bed, means to project the marglns of the printed sheets tangentially at.

the upperside of the cylinder, reciprocating grippers timed tograsp said margins and strip the sheets from the cylinder at one end of their movement, and to open and release the sheets at the other end of their movement,

and means to forward the sheets through the open grippers.

. 9. In comb'nation with a printing press" lln having a'reciprocati'ng bed and an oscillating cylinder, adapted to receive sheets at the lower side of the, cylinder and print them: atone stroke, means to project the margins of the printed sheets tangentially at the upper side of the c linder, and from th uncock said grippers'when they approach the limit of their movement towards the cylinder andhave received between them the projected margin of a sheet, 3 7 v v 10.v In combination with a rinting press havin a reciprocating bed an an oscillating cylin er, adapted "to receive sheets at the lo wrippers moving towards e cylinder, means to cock said grippers as they approach the limit of their movement from the cylinder and means to.

er side of the'cylinder and print them at one stroke. means toproject the margins of the sheets tangentially at the upper side of the cylinder, grippers moving towards and from the cylinder, means to cock said grippers as they approach the limit of their movement from the cylinder, means to uncock said grippers when they approach the limit of .their movement towards the cylinder and from said cylinder, a shaft mounted in said frame parallel to the axis of the cylinder,

' arms on said shaft, a, rod connecting the outer ends of said arms, rollers on said rod engaging 'the end disks of the cylinder, springs holding said rollers yieldingly in engagement with the cylinder, brackets on said rod inwardly of said rollers, arms pivoted to said brackets so as to have a movement between narrow limits, rollers on said arms adapted to engage a sheet on the cylinder, and springs pressing said last named arms so as to hold said last named rollers yicldingly in engagement with the sheet.

- 12. In combination with a printing press having a bed reciprocating in an inclined plane and an oscillating cylinder in front of the-bed, a frame in front of the cylinder, arms pivoted to said frame projecting over the cylinder, a rod connecting thefree ends of said arms, rollers on said rod engaging the end'disks of the cylinder,'springs acting on said arms so as to hold said rollers in engage; ment with said disks, brackets mounted on said rod between said rollers, supports pivoted so as to be movable within narrow limlts 1 the free-endsof said .rollers yield to said bf'ackets, rollers carried by said sup ports, and springs acting on said supports so as to hold said last named l'rollers yieldingly against the surface of a sheet on the cylinder. v

'13. In combination with a printing press having-a bed reciprocating in an inclined plane and an-oscillating cylinder in front of the bed, a frame in front of the cylinder, arms pivoted. to said frame, a rod connecting axis of the cylinder, rollers on said rod engaging the end disks of the cylinder, brackets arms parallel to the mounted on'said rod between said rollers,

' pports pivoted t6 said brackets so as tobe movable within narrowlimits, rollersfcarried by said supports, and springs actingon said supports so as to hold said, last named v gly against the surface of a sheet on the c inder. y

14:. In,com ination with a printing press having a bed reciprocating in an inclined plane and an,oscillating cylinder in front of 'thebed, a frame mounted in front of the press and movable with respect thereto, means on said frame for feeding sheets to the cylinder, anelectric motor operating thepress, -a switch mounted on the frame of the press controlling said motor, and sheet-controlled mechanism mounted on said movable frame. operating said switch to open the motor circuit when a sheet is not present when due.

15.- In combination with a printing press having a bed reciprocating in an inclined plane and an oscillating cylinder mounted in front of the bed, a frame movabletowards and from the press, means on said frame for feeding sheets to the cylinder, an electricmotor operating the press, a plunger switch fixed with respect to the framecontrolling said- I motor, a lever fulcrumed on said manually movable frame having an arm extending to the plunger of said switch, and sheet-controlled mechanism mounted on said manually movable frame ada ted to move the other "end of said lever w en asheet is not present when due.

1 16.- In a combined printing press andauto mat'ic sheet feeding mechanism in which the sheet feeding mechanism is mountedpn a frame movable towards and'from the press, an'electric motor for operating said press and mechanism, a switch fixed with respect to theframe of the press, and sheet-controlled mechanism mounted on said movable frame for operating said switch. i

17; In'a combined printing press and sheet feeding mechanism, in which the sheet feedin mechanism is mounted on a frame movable towards and from the press, an electric motor for operating said press and mechanism, a motor control switch box fixed with respect to the frame of th press including manual means for controlling the motor circuit and automatically operable means for controlling said circuit Said latter means comprising a stem, a lever fulcrumed on said movable frame having an arm extending under said stem, and means for actuating the other arm of said leverwhen asheet is not present when due. r

18. In combination, a printing ress having a reciprocating bed and a cylm er, means I to throw the cylinder to impre'ssio'non and ed positions, means to' feed-sheets to said cylinder, means to deliver the printed sheets from the cylinder, a frame carrying said sheet feeding and delivering means mounted for movement to withdraw said sheet feeding and delivering'means fromoperative relation with the c linder to give accessito interior pprts of t e press,.and means to trip said impression. actuating means when a sheet is nbt present on thesheet feeding means when due, said tripping means being eonstructed-and arran ed to permit the withdrawal movement 10% said frame and to automatically assume. operative position. when the frame is'returnedto its normal position.

19. In a printing press having abed re ciprocating in an inchned plane and an oscilmovable frame and a link slidably supported on the frame of the press having one end piv- I a means including two arms pivoted respectively on the frame of the press and on said ot'ed to the arm on the press frame and having its other end abutting alateral projection on theother arm, and means for rotating the latter upon failure to feed a sheet.

20. In a combined printing press and. sheet feeding-mechanism including a bed reciprocating in an inclined plane, an oscillating cylinderih front of the bed and sheet-feeding mechanism mounted on a frame movable towards and from.the press, in combination, means for operating the impression, means for tripping the impression operat ng means including a rod slidably supported on the frame of-the press and an arm pivoted on said movablefr ame having a lateral projec- 1 a sheet.

tion abuttingagainst the end of said rod, and means to rotatesaid arm upon failure to feed 21. In combination with a printing press having a bed' reciprocating in. an inclined plane and acylinder oscillating in front of the bed, a sheet feeder and delivery comprising a frame movable towards and from the press, a feed board supported by the frame below and at the rear of the feed board, a

tangentially to the lower side of the cylinder, a feed'table supported for vertical movement delivery board supported at the top of said frame-and projecting rearwardly therefromand a sheet delivery between the cylinder and delivery, board arranged tangentially to the upper side of thecylinder, said delivery comprising a set of endlesstapes and means to 1 take the sheets from the cylinder and position them on the tapes.

22. In combination with a printing press having a-bed reciprocating up anddown and I a cylinder oscillating in' front'of the bed, a

sheet feeder and delivery comprisi g a frame supported in front of the press, a eed board supported by the frame tangentially to the lower side of the cylinder, a delivery table supported near the top of said frameand a a a cylinder oscillating in front of the bed," a

sheet feeder and delivery comprising a frame supported in'front of the press, a feed board supported by the frame tangentially to the lower side of the cylinder, a delivery table supported near the top of said frame and a sheet delivery between the cylinder and delivery table arranged tangentially to the upper side of the cylinder, said delivery comprising a set of endless tapes. and means to take printed sheets from the cylinder and position them on the tapes. QL-I'n combination with a printing press having a reciprocating bed and an oscillating cylinder, receiving sheets at the lower side of the cylinder and printing them at one stroke,

a delivery table, sheet conveying means ex- J tending from adjacent the cylinder to the table, reciprocating grippers having a rel of the sheet and placing the same on the tapes,

lng open until after the through the same.

25, Incombination with a printing press having a reciprocating bed and an oscillating cylinder, a feed board tangent to the lower element of said cylinder, said cylinder being adapted to receive sheets from said, feed board and print them at one stroke, a delivery table, sheet conveying means tangentto the top of the cylinder over said board and extending from the cylinder to the table, reciprocating grippers having a stroke less than the distance between the cylinder and table for gripping the margin of the sheet and plac ing the same on the sheet conveying means,

through the same. 1

In testimony whereof I hei'eunto aflix my signature. y

- WILLIAM M. KELLY.

atively short stroke for gripping the margin

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