US1437461A

US1437461A - Flat-bed printing machine

Info

Publication number: US1437461A
Application number: US333556A
Authority: US
Inventors: Annand Robert Cumming
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-10-27
Filing date: 1919-10-27
Publication date: 1922-12-05
Anticipated expiration: 1939-12-05

Description

R. c. ANNAND. FLAT an) mmme MACHINE.

APPLICATION FILED OCT- 27. I919. 43Y 4 51 Patented Dep. 5, 1922.

7 SHEETS-SHEET 1.

In wen t fl ternaq mama-1.;

R. c. ANNAND. FLAT BED PRINTING MACHINE. APPLICATION FILED OCT- 27, I9I9- Patented Dec; 5, 1922.

2 sHEETs sHEET-.2.

In we mate 7',

R. C. ANNAND. FLAT BED PRINTING MACHINE. APPLICATION nuzu OCT- 21. 1919.

1,437,4 1, Patented 960.5,1922

I SHEETS-SHEET 3- Inw entor; 72 a 2 R. C. ANNAND.

FLAT BED PRINTING MACHINE. APPLICATION FILED OCT- 27, 1919.

Patented Dec. 5, 1922.

1 SHEETSQSHEET 4.

Patented Dee. 5,1922.

7 SHEETS-SHEET 5.

R. C. ANNAND. FLAT BED PRINTING MACHINE. APPLICATION FILED 00127. 1919.

R. C. ANNAND. FLAT BED PRINTING MACHINE. APPLICATION 'msu OCT- 21. 1919.

Patented Dec. 5, 1922.

R. C. ANNAND.

. F LAT BED PRINTING MACHINE. APPLICATION FILED OCT- 27. I9I9.

1,437,461 I I Patented Dec. 5, 1922.

7 SHEETS*SHEET 7.

Patented Dec. 5, 1922.

. irso srrs FLAT-BED PRINTING IJIACHINIE.

Application file-(1 October 27, 1919. Serial N0.'333,556.

To all whom it may concern:

Be it known that ROBERT (Immune ANNAND, a subject of the King 0] Great Britain, residing at 20' hiteiriars Street, in the city of London, Englanrh has invented certain new and useful. Improvements in and Relating to Flat-Bed Printing Ma;

chines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to fiat bed printing machines of the reciprocating cylinder type and refers more particularly to ma chines of the character described in the specification of my United States Patent'No. 1,262,616.

The present invention has for its object certain improvements in machines oi the type referred to and consists primarily in the provision of a reciprocating delivery de vice to which the printed sheet is delivered ters Patent, in which however only such parts are shown and described as are considered necessary for the proper understanding of the. said invention.

In the accompanying drawings- Fig. l is an elevation. showing a general arrangement of the machine.

Fig. 2 is an end view in elevation of chine showing the delivery mechanism and means for giving a sheetits first told.

Fig. 3 is a plan view of delivery.

Fig. t is a view showing the parts for putting on and taking oft the impression cylinder, detached from the machine.

Fig. 5 is a view similar to Fig. 2 showing the means for operating the folding blade and the joggers. v

Fig. 6 is'a corresponding plan.

Fig. 7 is a detached view of the delivery mechanism and tapes showing the telescop lug members and means for eiiectinn' their adjustment. l l v 8 is corresponding plan.

Referring to- Figure 1; indicates the sheet feeding-board of usual construction provided with stops 2 against which the sheets are fed. 4 indicates the travelling carriage which carries the printing cylinder 3 1and the inking mechanism 19 of more or less known form and as it forms no part of the present invention no detaileddescription is necessary. indicates the reciprheating delivery. I

The carriage l is shown in full lines at one end of its stroke at the right hand of Fig. l and in dotted lines at the other end of its stroke upon the left hand. For the sake of clearness in the dotted or left hand position the reciprocating delivery mechanism QO'is shown broken so as to be clear oi the inking mechanism in the full line position. indicates an eccentric block which mounted on the carriage at and provided with a bearing for the printing cylinder shaft 6 and an arm 5 the purpose of which latterwill be hereafter more fully described. I

20 Figs. 1. 3, T andS indicates thedelivery I mechanism comprising telescoping members 20*, 2t adapted to be extended or brought more or less one within the other so that the said members can be adapted for the. different sizes of sheets to be centered on the folder so that the sheet will be folded in register. To this end the

members

20, 20 which are carried by the printing cylinder frame or carriages are slotted as at 20 20 and the member 20"- is' adapted to slide in a guideway 20" formed in the member 20 and to be retained in the desired position of adjustment by bolts 90 slackening these bolts the nieml'iers 20" may beslid into position for giving the required length oi delivery to suit the size of the 1 sheets in course of production. The sheets are conveyed into the first position in the delivery mechani in by means ofthe tapes indicated at 4-2 the arrangement being such that the adjacent operative surfaces of the said tapes move in the same direction irrespective of the direction of travel of the printing cylinder carriage 4. Thus by means of a gear wheel 37 carried by the printing cylinder which meshes with gear wheels 39 and 4 0 freely mounted on the

respective shafts

39 and 40 and ratchets and pawls 39 and 40 the

rollers

35, 36 are operated rotatively so as to effect the required directionary movement of the tapes. It will be seen that the

wheels

39 and 40 run freely on their respective shafts and that by means of the pawls carried thereby which engage the ratchet wheels fast on the respective shafts and the gear wheel-s 38 operatively connecting rollers 35 and 3b the latter are caused to rotate according to the direction of travel of the cylinder, the one roller freewheeling, so to speak while the other is being driven. The tapes 4-2 are supported by guide rollers 43 and 44: carried on shafts situated at one end of the delivery frame. 42 indicates tapes whereby the sheets are conveyed into the first position in the delivery mechanism. Connected to the aforesaid arm 5 by means of a pivotal connection 21 at the upper end is a bar 22 hereinafter referred to as the im pression bar. Disposed on each side of the machine are two members 23 carried by

arms

24, 24 pivoted respectively upon a stud 23 and axle 32 in the side frames of the machine. The members 23 are grooved or formed with guide-ways 25, rollers 26 carried by the bar 22 engaging and running with said guideways or grooves. The purpose of the arrangement just described is to raise and lower the arm 5 and thereby rotate within limits the eccentric bush 5 and thus raise or lower the printing cylinder 3 so as to cause the same to work in contact with the type or to remain out of contact with the type as long as the operator wishes. In the previous patent before referred to a means is shown of raising and lowering the cylinder at each end of its stroke trusting to frictional means to keep the cylinder up or down as required during its travel forward and back. This means I have found insufiicient and I am now shewing a way whereby the impression regulating devices are kept in either position after the change has been made at the ends of the stroke.

The members 23 are raised and lowered by a cam 27 mounted on the main re. and contacting with cam roller 28 on a rod 29 connected to the arm an. a powerful spring 31 serving to keep the roller 28 always in contact with the said cam 27. While the carriage travels backwards and forwards the rollers 26 run in the cam tracks or guideways of the members 23. In Fig. 1 these members are indicated in the top position whereby the impression is kept off the type, it being assumed that the carriage has just completed the return. journey. It is now necessary to put the iime pression on the type and for this purpose the cylinder must be lowered. Therefore previous to the cylinder starting on its printing stroke to the left the cam 27 is operated so as to allow the spring 31 to oscillate the shaft 32 to a suflicient extent to move the arms 24: and 24 downwards and with them the members 23 and consequently the rollers 26. Thus the members 23 and rod 22 are lowered and simultaneously a turning movement is imparted to the bush 5 with the effect that the printing cylinder is also lowered and brought into contact with the type. When it is desired to keep the impression off and prevent the machine printing, should the feeder be unable to feed a sheet in time, a handle 33 is provided which if moved to the left will enable the catch 34 operated by said handle to drop down and by engaging the nose or projection 23 to hold back the members and so prevent them being moved to the left and lowered, and also preventing the spring and the weight of the cylinder from bring ing the cylinder and type into printing contact. l Vhen the attendant wants to resume printing he moves handle 33 to the right but he will not be able to lift the catch 3 until the cam 27 comes into action and takes off the pressure of the cam and spring and thereby enables the hooked catch to be lifted.

An important feature of. my invention is the combination in a reciprocating cylinder machine of a. reciprocating delivery which receives the sheets direct from the printing cylinder and deposits them in a pile at one end of the machine, the pile table at the same time forming the top of the folding mechanism which can be used or not as is desired.

Tl e sheet when printed run or passed between the two sets of tapes 42 fori'ning part of the reciprocating delivery. these tapes being driven by the two rollers 36 which are geared together at one side of the machino by the wheels 38. At the opposite side of the machine these rollers are driven by a gear wheel 37 on end of printing cylinder 3. the cylinder wheel driving the two wheels 39 and 1-0 on the axles of the rol ers and 36. The arrangement of this mechanism is such that these t o rollers always rotate in one direction irrespective of the direction of rotation of the iiee, '17 with whi h both the ear wheels -40 are inmesln although they are not in mesh with each other. Thus they are free on their axles while running in one direction, and onlyengan'e with "their axles through pawl and ratchet mechanism of any well known free wheel type while running in the other direction. it being understood that one pawl and ratchet device is operative at a time the other free wheeling meanwhile.

In Figs. 1, 3, 7 and 8 the tapes between which the sheet is carried are indicated at 42 which tapes are carried by

rollers

43 and 44 disposed at the right hand end of the delivcry; 45 45 indicate the switches whiohpass between the rollers a3 and 14 and serve to direct the sheet downwards and towards the left on the pile while the carriage completes its travel over the pile to the right.

The action of the delivery is asfollows. Vhen printing a sheet the full capacity of the machine and when the reciprocating members have travelled the full extent of the printing stroke to the left the leading edge of the newly printed sheet will be about half way along the length of the reciprocating delivery. When the carriage starts on its right hand stroke the rollers 35 tliCl ii continue to rotate in the one direction. This is secured by the free wheel drivers being so arranged that while the one is running free on say the bottom roller the other is enga 'ed driving the top roller and viceversa.

the time the end of the delivery reaches the a delivery table the sheet has been so advanced that its leading edge is approaching the end of its travel between the tapes whereupon it is directed backwards by the switches -l5 and by the time the delivery has reached its full right hand travel the sheet willhave been delivered on to the pile. y p

The delivery board is provided with jog gers that can be set to suit any size ofsheet and to even the sheets up to an exact position either forfolding or for open delivery.

In the foregoing the reciprocatingdelivery mechanism is described as working in attachment to the carriage of the travelling printing cylinder and delivering the, sheet with its printed side up. adapted for bookwork, and the better class of work as it permits of the folder folding the freshly printed side inwards or inside. By this means the folding tapes and rollers do not come in contact with the newly deposited ink and smearing is reduced to a minimum. In the production of newspapers the outside and most important pages are usually printed at the second printing. These important pages are required to be folded outside. Be

fore this can be done the delivery has to be changed to deliver the last printed side face downwards. By slight modification of the mechanism already described this desirable alteration can be effected. Toeffect this the rod on which the switches 45 are arranged is removed from the machine together with the switches. The free wheel 40 is moved along its shaft to a position out of gear with the gear wheel 37 as shown in dotted lines in Figs. and 8. The pair of

rollers

35 and 36 are now only driven by the one driving wheel 39 on the lower roller while the tapes 42 are only driven when the cylinder is on its printing stroke and remains stationary on thereturn stroke. By this arrangement the sheet is not rolled out of the delivery frame" until the carriage with its whole mechanism is on its printing stroke for the next sheet. The

This system is central .ening and. shortening ofthe delivery frame necessitates the use ofelastic tapes already knownin the art. .loggers are common tot modern machines and are worked from a swivelling mechanism in the centre of the delivery board. When'the delivery table also forms part of the folder as it does in this case the folding rollers have to hein the middle ofthe table and a special provision has to be made for operating the joggers, which is effected according tothis invention in the following manner. I

{16,46 indicate the joggers. Of the size shown on the delivery board three are arranged with simply a capability of adjust ment thereon, while the other' three are adapted for being adjusted so as to suit the size of the sheet and arecapable of operating backwards and forwards so as to on and manoeuvre the sheets against the other jogs gers and ensure thesymmetry of the pile being preservedl i The shafts 47, 457 are fastened to the underside of the delivery tableand operated work against the edge of a cam 50" the latter beingactuated by a chain gear. as indicated diagrammatically at 50.

.The rodsol of the reciprocating joggers 4L6 slidebackwards and forwards inbearings in the delivery board and are operated by the arms The said rods 51, pass through thejo gers attheir undersides and as the shafts t? al are moved by the cam 50 and operating rod 50 they cause the jo 'ers to move apart to I P1?) allow the sheet to settle down between them after which they close and jog the sheet into position the rods 51 pertainingfito' the joggers 4-6 are similarlymounted at the under sides but are not movable after being set in the desired position as is the case with the joggers 4L6. p I

The rollers indicated at beneath the delivery board are the two folding rollers that give the sheet itsfirst fold after it has been correctly placed or positioned by the joggers. The sheet is tucked in between the said rollers by the folding blade 54 which is vibrated by the arm 55 mounted on the pivot at 58 through the arm 57 and link or rod 56. This link or rod is actuated by a cam. 56 on the main driving shaft 56 of folder said cam. engaging a roller 56 carried by the rod 56. lVhen it is not desired to fold the folder blade 54L and arm 55 are suspendarm Vhen the arm and ioloin are so suspended the link or rod '6 held so tl' will he iney;

the cin moving the some.

litter the first told has been made any further folding may be efiectcd by any suitable known mechanisnii the construction and application or" which will be i -adily appernt to those versed in the art Claims:

1. In a flat bed printing niachin type in which a reciprocatin ind is operativeiy connected roosting delivery Il1 )(l12l11l' sheet folding device, the a reciprocating deliverv inechai to receive the sheets from the prin inder deliver the seine most of a delivery b the sheets deposited ery mechanism and to eliiect the 'reg isterii of said sheets preparatory to the folding; t iereoi and a folding blade in operative r lation to seid delivery board.

2. In a fiat bed printing; Ina no oil the type in which a reciprocating printing cylinder 1s operativeiy connected with a reciprocating delivery mechanism and w th a sheet folding device, the combination with a reciprocating delivery mechanism comprising an upper and a lower setol' tapes adapted for unidirectional operation and a delivery board adapted to receive the sheets deposited thereon by said delivery mechanism and comprising devices and rollers and a folding bladevin operative relation to said delivery board.

3. In a flat bed printing machine of the type in which a reciproosting printing cylinder is operatively connected with a reciprocating delivery mechanism and with a sheet folding device, the combination with a reciprocating delivery mechanism adapter to receive the sheets from the printing cylindcr, of a folding table, joggers on said table, rollers positioned relatively to said table and a vibrating folding blade apted to operate in conjunctionwith the gogg'ers on said table whereby the sheets received. thereon are folded before they issue from the machine.

In a) flat bed printing machine of the type in which reciprocating printing cylinder operatively connected with a reciprocating delivery mechanism and with sheet iolc ing device the combination of means for deliverine sheets which have 0 the outside printed matter impressed at the second printing on to the delivery table with tie said outside face downwards and n'aeans for folding said shee 1) with said printed matter ontwarcs.

5. In it flat bed printing machine 01" the I we in which a reciprocatingprinting cy indcr is operatively connected with a reciprow n deivery mechanism and with a d ne, device, the combination with type in which reciprocating printing cyl tinder is operatively connected with a'reciproosting delivery mechanism and with a sheet :5 l 1 inn comes, the combination with t ie reciprocating printing cylinder carriage eciprocating deliverymechanisin comtelescopic side members, means co1nduplicate sets of tapes, rollers for carrying said tapes, actuating means operatively related to the reciprocating printing cylinder and adapted to move said tapes in one direction, a adapted to p s rollers to direct the sneet downwards and backwards and deliver the sheet on to the pile on said delivery board.

Signed at London, England, this seventh day of October 1919 in the presence of two witnesses. l 7

RQBERT GT'lvlMlNG ANNAND.

l Vitnesses: v i

H. J. FRIsr-Y, I Hennr Minniin'ron.

printed thereon by said delivery inechadelivery board and switches between the tapes carrying