US1878904A

US1878904A - Printing press

Info

Publication number: US1878904A
Application number: US456760A
Authority: US
Inventors: Smith Walter Harold
Original assignee: Business Systems Ltd
Current assignee: Business Systems Ltd
Priority date: 1930-05-28
Filing date: 1930-05-28
Publication date: 1932-09-20
Anticipated expiration: 1949-09-20

Description

Sept. 20, 1932.

w. H. SMITH PRINTING PRESS Filed May 28, 1950 5 Sheets-Sheet l W. H. SMITH PRINTING PRES S Sept. 20, 1932.

Filed May 28, 1930 5 Sheets-Sheet 2 Sept. 20, 1932. w` 5M|TH 1,878,904

PRINTING PRESS Filed May 28, 1930 5 Sheets-Sheet 5 fron/vf W. H. SMITH PRINTING PRESS Sept. 20, 1932.

Filed May 28. 1950 5 Sheets-Sheet 4 ,//V//f/VTOR M( HSM/TF2.

' w. H. SMITH PRINTING PRESS Sept. 20, 1932.

5 Sheets-Sheet 5 Filed May 28, 1930 /NVf/VOR M HM/ 7H sal/@M Patented -`Sept.v 20,' 1932 UNITED STATES PATENT OFFICE WALTER HAROLD SMITH, or TORONTO, ONTARIOCANADA, AssIGNOR. Tol BUSINESS l SYSTEMS LIMITED, or' TORONTO, ONTARIO, CANADA, A CORPORATION or CANADA PRINTING PRESS Apueation mea May 2s, 1930. serial No. 456.760.

My invention relates to` improvements inJ printing presses, and the object of the invention is. to provide means in a vpress in which a series of forms or designs with the usual small transverse margin or interspaee between the form ends are formed as they are printed on the web to stop the web at one of such marginal interspaces and throw` oif the impression simultaneously, and means for starting the web and throw on the impression simultaneously within such marginal space so that no printing is missed between the throwing oii' and thethrowing on of the impression, and a further object is to provide a timing means so that regardless of how many forms are carried by the form cylinder that the numbering and perforating units will be;

effective on each form and the folding on evl ery two forms, and it consists essentially of the arrangement andconstruction of parts all as 'hereinafter more particularly ex'- plained.

Fig. 1 is a side elevation of a printing press constructed in accordance with'my invention and showing the numbering, punching, perforating and folding mechanism diagrammatically.

' Fig. 2 is an enlarged elevation of the operating mechanism and showingpits connection to the cylinders of the press and relative position of the parts, the supporting standards of the press carrying the mechanism being removed. y i. Fig. 3 is an end elevation ofthe press. Fig. 4 is an enlarged face elevation of the clutch and the tripping levers coacting therewith. A

Fig. 5 is a similar view to Fig.l 4 showing the means for holding the clutch plate stationary when released.

F ig. 6 is a sectional view through the clutch showing the means for holding the clutch sta- 4 tionary until the impression cylinders. are raised into Contact.

taken on line 7--7 F ig. 4.

Fig. 8 is a sectional view through the clutch taken on line 8-8 Fig. 4.

Fi -9 is a sectional view on' line 9-9 Fig.

tripping pawls shown `vided with arms 10,r

Fig. 7 is a sectional view through the clutch' Fig. ..10 is a detail view of the manually operated meansfor raising or lowering the cylinders for the press. Fig. 11visv an enlarged perspective detail of the means for manually controlling the tripping mechanism and the numberingmechanism.

Fig. 12 shows perspective details of the in the relative posi# tion they assume.' 60' Figs. 13 and 14 are enlargedperspective details of the clutch rods.

1 indicates the main frame of the machinev 65 provided with

standard plates

2 and 3 connected by the supporting plate 4, the standard plates and supporting plate 4 being l0- cated .at each side of the machine. The

standard plates

2 and 3 carry housings 5 a-nd 6. 70 7, 8 and 9 4are respectively the plate cylinder, transfer cylinder and impression cylinder carried between the standard plates 2 supported on

shafts

7x, 8x and 9x. The

shafts

8x and 9x are mounted in eccentric bearings 10 and 11 in each of the standard plates 2.

A second printing-unit` consisting of the cylinders 12, 13 and 14 'carried on shafts 12", 13x and 14x between the standard plates 3, the shafts 13x and 14xfbeing also Vmounted in eccentric bearings 15'and 16.

The eccentric bearings 10. and 11 are proand 11x and the eccentric bearings 15 and 16 with arms 15 x and 16x. The arms 15x and l()x are connected by. adjustable links 17 and the armsv16x and 11x by adjustable links A18. 19-and'20 are rock shafts mounted at their ends in the plates 5 at each side of the machine 21 is 'an arm secured to the rock shaft 20 andA connected at its outer endby' a. tension spring 22 to a suitable anchoring point hereinafter described.

The rock shaft 19 is provided with an'arm 23 connected by a-tension spring 24 to a. stationary anchoring point `25. 26 is the main drivingor ily wheel sha-ft upon which is secured a gear pinion 27. The

cylinders

7, 8 and 9 are connected together by intermeshing

gears

28, 29 and 30, the gear 30 being de- 'ustv tachably connectedto a' cylinder-shaft 9x by clutch mechanism hereinafter described.

The gear 27 of the fly wheel shaft 26 is in meshing contact with thegear 30 so asto drive the

gears

29 and 28. The shaft 8x is provided at one end with' a bevel gear 31. 32 is aflongitudinal shaft mounted in bearings 33 and 34. 35 is a bevelled gear secured Y to the cylinder shaft 13x. '36 and 37 are bevel gears secured to the shaft '32 and meshing respectively with the bevel gears 31 and 35. By this means the cylinder gears 12, 13 and 14 intermeshin driven from the cylinder shaft 8. It will thus be seen` that theupper cylinders 7 and 12 -are drivencontinuously from the main drive or fly shaft26.

. I will now describe 'the meansby which the cylinders 8 and'9 and 13 and 14 are raised and lowered in and out of their printing position.

38- is an arm carried by the rock shaft 19 and pivotally connected as'indicated at 39 to'the connecting links 17 extending between the transfer cylinders. 40 is an arm carried 1by the rock shaft 20 and pivotallyconnected as indicated at, 40x to the connecting links 18 extending between'the impression cylinders. 41 is av collar secured to the shaft 19 and providedl with a notch 41x. 42 is a collar secured to the rock'shaft 20 and provided with a notch 42x. y

43 and 44 are studs carried respectively by the standard 2 and plate 4. 45 is a pawl swung upon the stud 44 andspring held at its free end in engagement with the notch 42x by the tension spring 46. 47 is a pawl mounted upon thestud 43 and spring held in engagement with the notch 4 1x by the tension spring48.

When the

pawls

47 and 45 are forced out of engagement -with the notches 41x and 42x.

the rock shafts 19 and 20 are turned, the shaft 20 ii a clockwise direction and the shaft 19 iii a counter clockwise direction.

By-this means the links 17 and 18 are carried longitudinally in the direction of arrow i thereby through the arms 10", 15",r 11x and 16x turnin the eccentric bearings 11 and 16 and. 10 an 15 so as to lower the transfer and

impression cylinders

8 and 13, 9 and 14 respectively out of their printing position.

I will now describe the combination clutch A and tripping mechanism whereby the press is thrown in and out of ear and the transfer and impression cylin ers: simultaneously carried to their on and off position by the releasing of

awls

45 and 47.

The sha 9x of one of the impression cylinders is extended outward from the stand-v ard plate-2 and has keyed thereon spaced a

art discs

49, 50y and 51, lThe disc 50 is provided with a central hub 52-through which` the extended end of the shaft 9x also passes such hub forming, aspacing means holding one with the other are- -nger 70. normally travels in a circular pat indicated b the `broken line7 5. The pawl the

discs

49 and 50 apart. The gear 30 is pro.- vided, with a centre orifice 30x corresponding in size to the size of the hub 52 so as to be freely mounted thereon and -normally idle around the hub when the clutch is disengaged. The disc 51 is connected to the discy 50 by means of the spacing studs 53.

Diametrically opposite circular orifices 54 fand 55 are formed in the disc 50 and centres of, which are in alignment with thesurfacc formed bythe exterior periphery of the hub 52 and interior periphery of the gear,30. The orifice 54 is extended through the hub 52 as indicated at 54x and adjacent portions of the gear 8O -as'indicated at 54 thereby forming a half orifice -in thehub 52 and an 'opposing half orifice inthe gear 30 which are carried into and out of alignment as the gear 30 revolves freely around the hub 52.

correspond. in curvature to the exterior pe riphery of the'hub 52.

63 is a cylindrical'extensionat the opposite end of the portion 61 adapted to turn# ably fit an orifice 64 formed inthe disc 49 in axial alignment with the centre of the "orifice 54. The outer end of the rod 58 is reduced at 65 extending through the orifice 57 and turnably iits the same, the ends of such portion 65 projecting from the. outer face of the disc 51.

The rod 59 is similarly formed the rod t 58 at its outer end, the inner end of the rod,

however, is only provided with a short portion 67 corresponding to the portion y6,1` of the rod .58, such short portion corresponding in 'length 'to the orifices extensions 55x and 55. The discs 49, 5.0 and 51 Yareall keyed to the shaft 9x. 68 and 69y are gearsegments secured tothe outer ends of the

rods

58 and 59 in meshing relation one with the other so. as to ensure of the

rods

58 and 59 turning in uniso 70 is a tripping ngerwhich is secured to `the rod 58'between thfdiscs v50 and51. 71

and 72 are stops for limiting the movement of the tripping finger 70. 73 is-a tension spring secured atl one end tothe tripping nger70 and at its opposite end to an vanchoring point 74 formed between .the

discs

50 and 51. The outer end of the trippino` 45` is provi* ed with a rearwardly extending inger .45c which is in alignment with the interspace between the

discs

50 and 51 and at its extreme end enters into such interspace andv path of the tripping an open ended slot 79. is a short shaftv 10 journalled in the standard plate 2 as indicated at 80". 81 is a sleeve secured to the outer end of the shaft 80 from which an upwardly extending tripping iinger 82 extends,

the extreme upper end extending through the slotted end 79 of thestop finger 78, projecting Vslightly above the same as clearly indicated in Fig. 4 and closely adjacent to the path 7 5 of the tripping finger 70. The tripping finger Y 82 is spring held by a spring 83. 84 is a latch which is secured to the shaft 8O to turn therewith. 8 5 is a shaft extending transversely of the;machine and mounted in the standard plates 2. 86 is a sleeve secured to the shaft and provided witha rearwardly extendling arm 87 and a forwardly extending arm 88.' 89 is a heavytension spring secured at vits upper end to the end of the arm 87 and at its lower end to a suitable anchoring point at the base of the press. The sleeve 86 is provided with a segmental extension 90 provided in its periphery with a latch engaging notch 91 with which the latch 84 engages when the parts are in their normal or runmng position.

When it is desired to stop the machine the stop-pawl 78 is swung from the full line position indicated in Fig. 4 to the dotted line position indicated in-the same vfigure so as to extend across the circular path 75 of the tripping pawl 70.

As theclutch revolves the tripping linger 70 engages the end of the stop finger 78 and is thereby forced into the dotted position in- 45 dicated in Fig. 4 and simultaneously against the end of the tripping linger 452 forcing such tripping finger 45x downward and thereby raising the engaging end of the pawl 45 out of the notchv 42? c of the collar 42 thereby releasing the collar and the shaft 20 so that it is revolved in a clockwise direction by the spring 46 which movement carries the link 18 in the direction of-arrow to throw the ximpression cylinders to their oi position. 'j

By the tripping of th'e shaft 20 as. above described mechanism is operated whereby the collar 41 and shaft 19 are released which mechanism I will now describe. v

92 is an arm carried. by the shaft 20. 93 is 'a tripping member pivotally mounted at 94 upon the arm 92 and provided intermediate of its height with a lateral projection 95. The tripping member is spring held to any suitable anchoring point by a spring '93". The

C5 upper end of the tripping member 93 is inclined as indicated at 93. 96 is' a rectangular pin carried'by a suitable portion of the plate 4 and with which the upper inclined end 93 is carried into engagement by the clockwise movement of the released rocking shaft 20.

the finger 45 to throw off the impression cylinders by the same operation, the lateral pro- 0 When the: rocking shaft 20 is releasedby 7 jection 95 is carried into engagement with the tail end'. of the latch 47 carrying it out of engagement with the notcl 41x so as to release the shaft 19 which is then moved counter clockwise so as to carry the links 17 also in the direction of arrow and carry the transfer cylinders to the o positio 'When `the tripping member 93 is carried to its extreme upward position it engages the pin .96 thereby carrying the projection 95 clear of the latching lever 47 so as to free it and permit its engaging end to resiliently bear against the collar 41.

As the tripping finger 70 operates as above described it turns the cltch rod 58 so lthat the face of the portion 61 is carriedinto a positlon flush with the periphery of the hub i 52. The corresponding surface of the clutchl rod 59l is carried linto' the same position through the medium of the

intermeshing gear segments

68 and 69 so thatfthe driving connection between the gear 30 and impression cylinder shaft 9x is broken.

97 is a bar provided at one end with a longitudinalslot 98 and at its opposite end with a rod portion 99 which is threaded as-'indicated at 100. 101 is' a block pivotally mounted upon the segmental portion 90 and through which the threaded portion o the rod 99 vextends. It will be seen that the pin 40x forming the ivotal connection between the arm 40 and link 18 will be carried to the opposite lend of the slot V98 by the release of the rocking shaft 20.

.When it is desired to :re-engage the clutch 4 and simultaneously carry the impression cylinders to their 'operative positions the stop finger 78 is swung downward from the dotted hne position shown in Fig. 4totheiful1 line position.

By this means the upper end of the finger 82 extendsin'an upwardly projecting mechanism revolves the finger 70 which is inthe dotted position engages the upwardly 82 moving itl 'its lposi- 112i tion above the stop linger 78 and as the c utch sponding direction so as to reset the impres- 1:9

sion cylinders in the printing position, and at the same time, drawing down the tripping member 93 into position to refunction when it is again necessary to throw Vthe transfer cylinder out of operation.

It will be noted that the lower end of the spring 22 is anchored to a long arm 103 also carried by the sleeve 86. By this means, it will be seen, that when the 'spring 89 functions after the releasing of the dog 84the arm 103 will swing upward relieving the tension of the spring 22 thereby permitting of the shaft 20 being rocked back to its normal position without being opposed by the fulltension of the spring 22. l

In order to reset the dog 84 and quadrant 90 I provide a cam 104 secured to the main vdriving or fly wheel shaft 26, an arm 105 being pivotally mounted upon a cross shaft 106 at one end and pivotally connected to the upper end of the link 107 which is pivotally connected at its lower end to the arm 88 vof the sleeve 8 6. d

' 108 is a roller which is revolvably mounted upon the pin forming the pivotal connection between the 'arm 105 and link 107, such roller contacting with the periphery of the cam 104.-

` .It will be understood that the device is so timed that when the dog84`releases the segment 90 that the short radius of the cam-104 is opposite the roller 108 thereby providing for the free upward movement of the link 107- It will also be understood that the shaft 26 is a continuously revolving shaft, and that therefore, as soon as the tripping of the dog has been effected the major radius ofv the eccentric will come into operation to reset the do v will now describe the means by which the stop finger 78 isset for producing the lowering or raising operation of the transfer and impression cylinders.

When the stop linger wardly swung position the tail piece 7 8x of such lever bears against a stop 109 carried.

by a suitable portion of the machine. 110 is a short shaft -mou'nted in bearings 111 and 112. 113 is a sleeve secured to the shaft 110 and provided with an arm 114 connected by a link 115 to the tail piece v78". When the arm 114 isvswung downward the link 115 is f carried forward carrying the tail piece 78x in a corresponding direction and swinging the stop finger 78 upward into the path of the tripping finger 70 as hereinafter described.

116V isa divided sleeve, the members of which are spaced apart to form'a groove 117 across which extends diametrically opposite pins 118 yand 119. 120 is a bracket carried by the standard plate 2.

121 is a bracket carried by the standard plate 3, the brackets 12C-and 121 being provided with bearing portions 120x and 121x in which is journalled a longitudinally extending shaft 123. 124 is a sleeve secured to the 78 is in its down-

v

128 and 129 provided at their inner side with A -notches 130 and 131.-

132 and 133v are bearing pieces carried by the bracket 120 and in which is journalled a shaft 134 provided with a handle 135 by .which the shaft may be rocked manually.

136 is a crank arm secured to the opposite end of the shaft 134 and carrying a pin 137. 138 is a pin carried by the

detent

127 and 139 is a tension spring secured. at one end to the pin 137 and the opposite end to the pin 138.

When the handle 135 is in the position shown in the drawings with the crank arm 136 extending to the right hand side of the shaft 134 the pulll of the spring 139 carries the.detent 127 in a corresponding direction that is towards the right so that the-notch v 131 is brought beneath the pin 118. WhenA the handle 135 ismoved over to the right hand side of the shaft 134 the crank arm 136 is carried to the left of the shaft 134, and therefore, the pull of the spring 139 draws the detent 127 in the opposite direction so that the notch 130 will be carried beneath the pin 119.

140 is a sleeve also secured to the shaft 123. The sleeve 140 is provided with an arm 141. 142 is a gear pinion secured to the end of the shaft 32. 143 is a gear mounted upon a suitable supporting stud carried on the frame of the machine and with which the pinion 142 meshes. 144 is a cam'formed integral or revolvingl in unison with the gear .143. 145 is a rod pivotally connectedat its lower end to the arm 141 and provided to wards its upper end with a longitudinal slot 146 through which the outer end of the stud upon which the cam 144 is mounted extends.

desired to throw the machine out of operation the handle 135 is swung over to the opposite side of the shaft 134 so that the detent is swung towards the dotted line position and.

as the arm 125 is reciprocated the notch 130 is carried beneath the pin 119 so that by the next upward movement of the detent the pins 119 and 118 are carried to the dotted line position. By this means the arm 114 is carried in the direction of arrow see Fig. 11 forcing the stop linger 78 upward to operate the clutch to release in the manner above described,"and simultaneously disenga e and switch provided with a pressurevbutton 151.

When thehandle 135 is thrown over in either direction the cam 150 engages the pressure button 151 so as to operate the slowing down switch to slow down the mechanism to the required speed during the change from one position to another. y

In order to insure that the clutch mechanism Atogether with the arm 70 is not carried forward upon the lowering of the stop lever 78 I have provided a brake shoe 152 v periphery of the disc when in its lowered `82. It is for this position as. indicated by dotted lines in Fig. 6, the arm 150 supported by an adjustable set screw 154. It will thus be seen that when the stop lever 7' Sis lowered the clutch mechanism cannot immediately start' to revolve owing to its frictional Contact with the idler gear 30 and cannot revolve .until the impression cylinder is raised so` as to carry the clutch out of contact with the brake shoe. If it were allowed'to slightly revolve as soon as the stop lever 78 is lowered, in the position the arm would assume, it may be possible that such arm would miss the tripping finger purpose that the brake shoe 153 is provided.I

A dog 156 is als'o mounted upon the stud 44 and spring pressed against the periphery of the disc 51 by the spring 157 carried by the stop linger 78. When the stop fin er 78 is raised and engaged bythe tripping. nger 70 such tripping finger 1s carried against the stop 72'thereby definitely checking therotation of the clutch mechanism in a counter clockwise direction, thedog 156 simultaneously slipping behind the projection 155 preventing the rotation of the clutch mechanism in a clockwise direction and thereby definitely stopping the impression cylinder at a delinite point vwithout any danger of slippage.

In order that the numbering, punching, perforating and `folding' mechanism is driven in unison with my machine a gear 158 is secured to the opposite end of the impression cylinder shaft 9x. 159 is a gear mounted upon the stud 160. 161 is a bevel gear formed Aintegral with the gear 159. 162 is a shaft extending longitudinally of the machine and mounted in suitable bearings 163. The impression cylinder 14 is connectedto the shaft 162 by gears corresponding to the

gears

158, 159, and 161 the shaft 162 being provided with bevel gears 164 meshing with the ears 161 of the impression cylinders 9 an gears 168 and 169 tothe shaft 162.

Punching, numbering and perforating mechanism is also driven from the shaft 162 as indicated at 165 and 166 to operate three times ineach revolution of the impression cylinder. l

167 is'a vertical shaft connected by bevel The uper end of the shaft 167 is provided with a evel gear 170 meshing with the bevel gear 171 mounted upon a transverse shaft 172 to which is secured a feed reller 173 coacting with the feed' roller 174 between which the web 175 is drawn to be folded by suitable folding mechanism in the position indicated at .17 6. 177 is a shaft upon which is secured a short leyer 178 provided with a set screw 179 adjacent .its end. y

180 is a disc provided with a transverse groove 181 and diametrically opposite set pins 182 and 183 extending from the face thereof. 184 is a sleeve secured to the shaft 123 and provided with an arm 185 which operates i`n unison with they arm 141. 186 is a block similar to the block 126 swivelled on the arm 185 and to which is ivotally connecte a vertically movable bar 187.

vided with a reduced portion 188 formin `

notches

189 and 190 on each side thereof an adapted to be swung alternately to a vertical position beneath the pins 182 and 183.

- 191 is a supporting bar secured to the main frame of the machine and between which and the disc 180 the vertical movable bar 187 extends thereby supporting such vertical bar in place. 192 is a crank handle pivoted to the supporting bar 191 at its lower end and provided with a pin 193 at its upper end forming a hand grip. 194 is a pin extending from the

bar

187 and 195 is a tension spring extendin between the pin 193 vand the pin 194.

It will thus be seen that when the crank handle 192 is swung tothe left hand side of its pivot that the pull of the spring 195 will draw the upper end of the bar 187 in a corresponding direction carr ing the notch 190 into operative relation wlth the pin 183 simllarly when the crank handle is swung to the vopposite side of its pivot the bar 187`will be drawn in the opposite 'direction so as to carry a notch 189 into position to coact with the pin 192.

When the bar 187 is in position to engalge the pin 183 or in the position yshown 1n t drawings the next vertical movement of the bar 187 will turn the disc 180 so that the screw 179 will drop into the groove 181 and thereby swing the cam arm 196 which is also secured to the shaft 177 out of its operative posltion with the crank 197 of the numbering mecha-- turning the disc 180 so as to force the set screw 179 outward andthereby forcing the cam arm 196 inward towards the operating crank 197 of the number mechanism. The numbering 4mechanism will then operate continuously three times in every revolution of the impression cylinder so as to impress a' number on each .fold of the web. n

Having described the principal parts involved in my invention I will brieiiy describe the operation of the same.

The press as shown is in the running position that is with

theclutch rods

58 and 59 inthe engaged position and the impression and transfer cylinders in raised or printing position.

It must be first stated that' in order that the imprint on the web remains in the correct position in relation to the folds thereof during the starting and stopping of the press that the stopping and the breaking of the printing Contact occurs simultaneously taking place definitely at the point where the printing surface of the plate cylinder is in the position of ceasing to coact with the transfer and impression cylinders or in other words, at the end of the plate printing surfaces as indicated at the point and thatthe restarting y and making of the -printing contact take place definitely at the eginning of the plate printing surface or at the point where the printing surface of the plate cylinder is in the position of commencing to coact with the transfer and impression cylinders as indicated at the point w1..- It will thus be seen that the whole action of stopping, breaking printing Contact, restarting. and remaking printing contact occurs between the points and w1. The printing surface comprising the remainder of the periphery of the printing cylinder is in three sections correspond-v ing to the three surfaces of each double fold of the web.

When lit is Vdesired to stop the press the handle 135 is moved over to the right ofthe shaft 134. vThis operation actuatesv the switch 150 by depressing the button 151 so as to slow down 'the press' as the stopping` operation is effected. This movement of the handle 135 rocks the shaft 134 so as to swing the crank arm 136 to the left hand side'of the rod 134 carrying the lower end ofthe spring 139 in the same direction. As soon as the spring 139 arrives in the last mentioned position it exerts a pull on the detent 127 swinging it on its pivot to the left carrying the notch 130 towards the pin 119. As the detent is constantly reciprocated verticall b the cam 147, link bar 145, arm 141, roc s aft 123 and arm 125 during its downward stroke such notch is drawn by the spring v139 beneath the pin 119 so that at the next upward stroke of the detent the notch engages such pin carrying it upward to the dotted position shown in 10and thereby rocking the shaft 110`in a corresponding direction. By the rocking movement of thev shaft 110 the arm 114 is also carried down forcing the link 115 forward towards the press thereby swinging the free end of the stop finger 78 upward into Athe dotted position indicated in Fig. 4 between the discs 50` and 51 and into the path of the tripping linger which'is revolving with the clutch.

'As Vthe finger 70 engages the stop finger 78 it is swung towards the dotted position of Fig. 4 against the tension of the'spring 73 and during such movement the end of the finger 7 0 moves vertically downward against ,the end face-ofsthe finger 78 finally engaging the stop 72. Upon the finger 70 arriving at this position the dog 156 normally bearing against the periphery of the disc 51 travels over the stop 155 and is forced into the dotted position ofl Fig. 5 by the spring 157 on the upwardly raised stop finger 78.r

- It will thus be seen that the disc 51, im-

inder is locked from the slightest movement 79 engaging the stop finger 78 and from the slightest clockwise movement by the dog 156 engaging the stopl 155.

u As the finger l70 is swung to the dotted position it also turns the clutch rod-58 to which it is secured and .by means of the

intermeshing gear segments

68 and 69 simultaneously turning the clutch rod 59 turning their faces 62 and 62x Hush with the periphery of the hub .52 and thereby freeing the gear 30 from driving engagement. Also as the end of the finger 70 is carried downward it engages the rearwardly extending finger 45 of the pawl 45 raising such pawl out of engagement with the notch 42x of the collar 42 secured to the ing the links 18 in a corresponding direction l so as to turn the eccentric bearings 16 and 11 to lower the impression cylinders. Also by the clockwise movement of the shaft 20 the arm 94 is swung upward raising the spring lheld tripping member upward and the lateral projection 95 thereof into engagement with the tail end of the latch pawl 47 disengaging the latch from the notch 41x of the collar 41 secured toI the shaft 19 thereby freeing such shaft to rock in a counter clockwise direction under the' tension of the spring 24 connected'tothe arm 23 also secured to the shaft.

The above rocking movement of the shaft 19 carries the links 17 also longitudinally to turnthe eccentric bearings 15 and 10 to lower the transfer cylinder out of printpression cylinder shaft 9x and impression cylthe press. Also whenI the parts are in the ing contact.- vIt willthus be seen' thatihe clutch mechanism is thrown'out ofgear and the cylinders of the press stopped definitely at Va predetermined point controlled bythe cam 147 and the impression and 'transfer cylinders loweredvfrom their printing position simultaneously 'definitely at that point.

When the impression cylinder- -9 is lowered as above described the clutch mechanism including the disc` is carried down with it so that the periphery of such disc is carried into engagement with the brake shoe 153 thereby definitely holding the cylindersl from rotation until again liftedto the printing position which operation I will now' dcscribe. i.

When it is desired to restart the press the transfer cylinders are first manually raised to the printingpositionlby'thehandle 41 against-the tension of the-spring 24. The handle 135 is'then returned to the position shown inthe drawings thecam 124 again engaging the switch button 151 to slow down position shown the detent 127 isdrawn back to the full line position by the spring 139 carrying the notch 131 towards the pin 118 which is in the dotted line position and as' the detent is reciprocated vertically as above position thereby rocking the shaft 110 in a described it engages the pin 118 tov carry from the dotted line position back to the full line clockwise direction to swing the arm 114 upward so as to pull upon the link 115 and swing the'stop finger out of the path "of theiinger 70 and .into such a position that the upper end of the trippingfinger 82 projects above the same intothe path of the finger 'l 70 when returning from its dotted line position to its normal or running position.

When the sto'p nger is lowered the trip- -ping finger 70 is held from engaging the finger 82 by the locking portions of the clutch rods engaging the interior periphery of the gear 30 preventing the forward swingof the finger 70 until the half orifices 54 and 55' register with the half orifices 54xV and 55x permitting the clutch rods to `turn by the A tension of the spring 73 carrying the finger into engagement with the stop pin 7l and forming a driving connection between' the gear 30- and impression cylinder shaft 9x. When this takes place the trippingfinger 70 engages the projecting end of theinger 82 sion of the spring 83.` By this means the shaft is rocked in a clockwise direction` carrying the dog 84 out ofthe notch 91 .free-f ing the sleeve 86 to turn clockwise under they tension of thespring 89 the eccentric '104 being so turned that the-short' radius thereof is then opposite` the-,roller 10.8' permitting z the upward movement'of the bar 107 and arm 88. The clockwise'rocking movement of the sleeve88 andl s egmental portion 90'- pulls e 123 isset tothe on or off the bar 97 inthe direction. of arrow drawing the pin 40x from its dotted position back to its normal or full line position lrocking the shaft 20 and collar 42 also back to its normal position raising the impression cylinders to the the pawl 45 to re-engage. It will be noted .that\durin rocking movementl of the s ha 20 the resistance ofthe spring 22 t0 the raising of the impression lcylinder is eliminated by the up ward movement of the arm 103 towhich the spring 22 is attached. Bythe same Aoperation the member93 is also carried'back' to its normal'A osition. y. A l

The contmued revolution ofjthe eccentric 104 forces the bar 107 longitudinally downward rocking the sleeve 86 in a counter clockwise direction so as to draw the spring 89 againpinto tension so as tobe stretched or reloaded for the next operation, the pawl 84 re-engaging thenotch`91." r y, Y l

By'the rocking movement of the shaft 123 the stopfinger 78 is moved to the on lor ofi on and off position by a mechanism which printing position and enabling the returnv is'al'so manually'set. -The numbering mechanism by the rocking movement of the shaft position bythe

notches

189 and 190 of the'thrust bar 187 endisc so that t e set screw 179 is carried radialwhich side of the bar 187 the' crank handle 192 is swinging.

'gaging the -i1is-1l82-or`183`and turning the l It may be stated that a pairof clutch yIneml bers Gland 67 are provided which' whenvse't y'as shown in Fig. 9 will permit ofthe drive in one direction being taken by'. the projecting portion of the clutchmember 61-and vin the other direction by the projecting portion ofl the'clutch member 67. The clutchl member 67 prevents thefmember-Glfrom entering the part orifice 54 registering position with the part orifice 55. Therefore` when-the part orifices 54. and 54y are in ,registeringpositiom the rear edges of these part orifices are in a line. `lThe member 61 is then turnedto a projecting position defi- A1m j until the member 61 is iny full lia nitely engaging'the gear 30 and hub 52 whent A ,g'y

these edges reach van aligned position. If the `meinber 61y were the only clutch member usedv forcing it towards the right against the ten-,

'suchjl clutch member would'begn toturn into vthe partforifice 54 before the part orice came tofa'completely registering positionfand the l yiic1e .,54 engaging thevrnember 6.1 midway of the part orifice 54changing the time of engagement. The partorifices 55 and.55x arev made short sothat the member 61 cannot en -v gage therewithand ermit the drive being nstarted at another'point'than'that desired.

From this description it will be seenthat I have devised means whereby a press of this type may be started or stopped and the cylinders Aplaced in. and out. of their printing ,position by a movement so quickly and closely coinciding with the definite starting and stopping of the press without any lost motio.

' What I claim as my invention is:

l. In a printing press of the type described,

the combination with the im ression cylinder, impression cylinder sha and driving mechanism, of a clutch device for engaging or vdisengaging the impression cylinder shaft and drive, and means automatically actuated by the opening and closing of the clutch for moving the impression cylinder in and outv of its printing position.

2. In a printing press of the type' described,

the combination with the impression cylinder,

impression cylinder shaft, printing cylinderand driving mechanism, of a clutch deyice for en aging and disengaging the impression ,cylin er shaft and drive, means actuated by'the opening and closing of the clutch for moving the impression cylinder in and out of the printing position, and timing means whereby the closing of the clutch and simultaneous moving of the impression cylinder into the printing position is effected at the beginning4 of the printing surface and the opening of the clutch and simultaneous moving ofthe impression cylinder from the printing position is effected at the end of the printing surface.

3. In a printing press of the type described, vthe combination with the impression cylinder, impression cylinder shaft, transfer cylinder and plate cylinder, of a clutch device for engaging and disengaging the impression cylinder with the drive, means actuated by the opening and closing of the clutch for moving the impression cylinder I.in and out `of its printing position, and means actuated by the` impression cylinder moving means for moving the transfer cylinder in and out ofits printing position.

4. In a printing press of the type described, the combination with the impression cylinder and the driving mechanism, of a clutch for engaging the impression cylinder with the drive atta predetermined point, means for .locking the cylinder from rotation upon release from the drive, ineans for loweringthe impression cylinder at the point of drive re- `lease, and means for raising the impression cylinder .atthe point of drive engagement 5. In a printing press ofthe type described, the combination with the impression cylinder and driving mechanism, of a clutch for throwing the impression cylinder in and out of driving' engagement at definite predetermined loints in its rotation, means for lowering the impression cylinder from' the printing position at'th'e point of clutch release and for raising the impression cylinder to the printing position at the point of clutch engagement, and means for positively locking the released impression cylinder from rotation until raised. i

6. In a printing'press of the type described, the combination with the impression cylinder and driving mechanism, of a clutch for throw- 7. In a printing press of the type decribed,

the combination with the impression cylin-` der and driving mechanism, of a clutch for throwing the impression cylinder in andv out of driving engagement at definite predetermined points in its rotation, means for loweringthe impression cylinder from the printing position at the point of clutch releaseand for raising the impression` cylinder to the printing position at the point of clutch engagement, and means for locking the impresr sion cylinderfrom rotation when released.

8; In a printing press of the type described,

- the combination with the impression cylinder and driving mechanism, of a clutch for throwing the impression cylinder in and out of gear at definite .predetermined points in its rotation, a clutch operating iin er; means for lowering the impression cylin ing position at the point of clutch release and for raising the impression cylinder at the point of clutch engagement,a stop devicewith which the clutch operating finger engages as it operates to release to prevent counter clockwise rotation of the cylinder, and a peripheral rojection carried by the clutch and a coacting dog simultaneously engaging therewith to prevent clockwise rotation. 9. In a printing press of the type described, the combination with the impression cylinder shaft and driving mechanism, of a cylindrical clutch body secured to the shaft, a gear lforming part of the drive idly carried on the clutch body, clutchmeans for engaging the ,clutch body and gear, a springl held operatin finger pivotally mounted to control sai clutch means and to travel at, its free end in a circular ath around the shaft, a stopmember carried) by the press and movable in and out of the path of the operating finger, means for automatically moving the stop member,

` and manually adjusted means for placing the stop moving means in actuating relation to move the stop up or down.

10. In a` printing press of the type 'de-- scribed, the combination with the impression cylinder "shaft and driving mechanism, ofa cylindrical clutch body secured to the shaft, a

er from the printgear forming part of the drive idly carried on the clutch bod ,clutch means for enga ing the clutch bo y and gear, a spring he d operating finger pivotally mounted to control said clutch means and to travel at its free end ina circular path around the shaft a stop member carried by the press and movable in and out of the path of the operating finger, means for automatically moving the stop member, and manually adjusted means for "placing the stop moving means in'actuatin relation ,to move `the stop up or down, an free endina circular means for timing such actuation.

11. In a printing press of the typedescribed, the) combination with thel impression cylinder shaft and driving mechanism, of a cylindrical clutch body secured to the shaft, a gear forming part ofthe clutch Vdrive for engaging the clutch body and gear, a

spring held operating finger pivotally mounted to control said c lutch means and to travel at its free end in a clrcular path around the shaft, a stop member carried by` the ress and movable in and out of the path o theV operating linger, means for automatically moving the stop member, comprising a transverse rock shaft, a link and lever connection between the rockable shaft and stop member, pins carried in diametrically opposite position at each side ofthe rock shaft, a lon tudinal rock shaft, means for rocking t e. :lon 'tudinal rock shaft froml the driving mec anism, an oppositely notched member reciprocated vertically by the rocking of the longitudinal rock shaft, and manual means for adjusting the notched member so that one or other of the notches engage a correspondiIng pin of the transverse rock shaft.

12. scribed, the combination with the impression cylinder shaft and driving mechanism, of a;

' cylindrical clutch body secured to the shaft,

a gear forming part of the clutch drive idly carried on the clutch body,

a spring held operating finger pivotallymounted to control said clutch means and to travel atits free end in a circular path around the shaft, a stop member carried by the press and movable in and out of the path of the operating finger, means for automatically moving the stop member, comprising a transverse rock shaft, a link and lever connectionbetween the rockable shaft and stop member, pins carried in diametricallyopposite position at each side of the rock shaft, a longitudinal rock shaft, means for rocking the longitudinal rock shaft from the driving mechanism, an oppositely notched member reciprocated vertically by the rocking of the longitudinal rock shaft, manual means for adjusting the notched member so that one or other of the notches Aengage a corresponding pin on the transverse rock shaft, and

.carried on the c lutch body,

n a printing press of the type de` clutch means for` engaging the clutch body and gear,

spring means for holding the notched member in the adjusted position. v 13. In a printing press of the type described, the combination with theimpression cylinder lshaft and driving mechanism, of a cylindrical clutch body .secured to the shaft, a gear forming part of the clutch drive idly clutch means forengaging the clutch body and gear, a 'spring heldoperating linger pivotally mounted to control said clutch means and to travel at its path around the shaft, a stop member carried by the press and movable in andout of the path of the operating inger,'means for automatically moving thestop member, comprising a transverse rock shaft, a link and lever connection between the rockable4 shaft and sto'p member, pins carried in di ame'trically opposite position at each side ofthe rock shaft, a longitudinalrock shaft, an arm carriedby the longitudinal rock shaft, a link bar pivotally connected thereto, a ca m driven from the drivel mechanism and coacting with the link bar to reciprocate the same vertically, an oppositely notched member rescribed, the combination with the impression cylinder, impression cylinder shaft and driving mechanism, of a clutch device for engaging or disengagingthe impression cylinder shaft and drive, means actuated by the opening and closing of the clutch .for moving the impression cylinder in and out of its printing position, and means for automatically slowing down the press during the aforesaid operations. n l 15. In a printing press of the type described, the combination with the impression cylinder and driving mechanism, of a cylindrical clutch body secured to the shaft, a gear forming part ofthe clutch drive idly carried on the clutch body, clutch means for engaging the clutchI body and gear, a spring held operating fingerpivotally mollnted to control said clutch means and to travel at its free end around the impression cylinder shaft;.a movable stop member carried by the press, means forl automatically moving the stop member in and out of the path of the operating lever, a spring actuated rock shaft,

means for lowering the impression cylinder Vby the rocking of suchl shaft, a latch device printing press of the type described, the combination, with the impression cylinder, transfer cylinder and the driving-mechanism, of a cylindrical clutch body secured to the shaft, a gear forming a part of the clutch drive idly carried on the clutch body, clutch means' for engaging the clutch body and gear, a spring held operating finger pivotally mounted to control said clutch v means, a lower spring actuated rock shaft ials releasably held against spring. tension,'means actuated by the released rock shaft for carrying the impression. cylinder out of the printing position, means coacting with the clutch operating finger for releasing the `lower spring actuated rock shaft, an upper spring` body, clutch means for engaging the clutch]- body and gear, a spring held operating finger pivotally mounted to control said clutch means, a lower spring actuated rock shaft releasably held against spring tension, means actuated by the released rock shaft for carrying. the impression cylinder out of the.

printing position, means coacting with the clutch operating finger for releasing the spring actuated rock shaft, an u per spring actuated rock shaft, a spring hel latch pawl for holding the upper rock shaft against sprin tension, means actuated by the release upper rock shaft for carrying the transfer cylinder out of the printing position, an arm carried by the lower rock shaft, A

a spring held tripping member .carried by the arm and having a lateral projection engaging the tail of the spring held latch pawl to release the same during the rocking of the lower rock shaft, and means for tripping the tripping member out of engagement with the pawl tail to vrelease the same after the rocking of the upper rock shaft.

' 18. In a printing press of the type described, the combination with the impression ing the rock shaft to the latched position and cylinder 'and' driving mechanism," of a clutch for engaging the impression shaft andthe driving gear, a spring actuated rock shaft, means operated by the rocking of the shaft for moving the impression'cylinder out of the printing position, means for simultaneously releasing the rock shaft and-opening the clutch, and means for simultaneously returnclosing the clutch. ting 'press of the type de- 19. In 'a prin scribed', the combination with the impression cylinder and driving mechanism, of a clutch for engaging the impression shaft Awith the driving gear, a spring actuated rock shaft, means operated by'the'rocking of the shaft for moving the impression'cylinder out of the printing position, means for simultaneously `releasing the 'rock shaft and openingl the clutch, means for simultaneously return- '.ing the rock shaft to theflatchedposition and for closing -the' clutch, and means for automatically releasing. the rock shaft from spring tension during its return movement.

- 20. In a printing. press ofthe type described, the combination with the impression cylinder"l and' the driving mechanism, a clutch, a clutch actuating finger. and stop finger, of a. spring actuated rock shaft releasably held against spring tension, means operated by the rocking of the rockshaft when released for moving the impression cylinder'sout of their printing position, an arml extending from the rock shaft, a rocking segment mounted in the press,l a pull bar connecting the segment to the arm, a tension spring connected to the segment so as .to eX- ert a pull onthe pull bar, a latch pawl holding. the segment against spring tension, and atripping finger connected to the latch pawl and extending past the' lowered stop fingir and into the path of the clutch operating ger as it is freed by the stop finger and returns to the press running position.

21. In a printing press of the scribed, the-combination with the impression cylinder and the driving4 mechanism, a clutch, a clutch actuating finger and stop nger, of a spring actuated rock shaft releas- .ably held against spring tension, means operated bythe rocking of the rock shaft when released for` moving the impression cylinders out of their printing position, an arm extending from the rock-shaft, a rocking se'gment mounted in the-press, a pull bar convnecting the segment to the arm, a tension spring connected to the Vsegment so as to exert a pullV on the pull bar, a latch pawl holding the segment against spring tension, a tripping finger connected tothe latch pawl and extending pastthe lowered stop finger and into the path ofthe clutch operating finger as it is freed bythe stop finger and returns to the press running position, and antype de- I arm extending frmthe segment towards the spring actuated rock shaft'and forming a movable anchoring `p'ointfor the spring'of -the spring actuatedjrock shaft..when the seg- `ment is released.

izo

. 22. In a .printing press of the type -del scribed, the combination with the impression y'cylinder and the driving mechanism, a

clutch, a clutch actuating vfinger and stop finger, of a spring actuated rock shaft releasably held against spring tension, means .operated bythe rocking of the rock shaft when released for moving the impression cylinders out of their ,printing position, an arm' extending from the rock shaft, a rocking segment mounted in the press, a pull bar connecting the segment'- to the'arm, a tension spring connected to the segment so as to exert a pul1`on the pull bar, a latch pawl holding the segment against s ring tension, and tripping finger connectedp tothe latch pawl and extending past the lowered stop finger and into the path of the clutch operating linger as it is freed by the stop finger and returns to the press. running'position, and means for automatically returningthe segment to its latched position after release.

23. In a printing press having an impression cylinder and a printing cylinder, means for positively stopping the impression cylin- I der at a predetermined position, means for lowering the impression cylinder simultane,

ously from the printing position, and means for starting and restoring the impression cylinder simultaneously to the printing position.

WALTER HAROLD SMITH.