US1254338A - Inking apparatus of printing-presses. - Google Patents

Description

e. w. MASCORD. INKING APPARATUS 0F PRINTING PRESS'ES,

APPLICATION FILED JULY 20. I915- Patented Jan. 22,- 1918.

- Invontor 4. W. W

- .itomey? rmrrnn simmers ea union drones wrrusccnn, or BARNES, nonnon', ENGLAND.

Specification 02 Letters Patent.

'INKING ALEPABAIUS OF PRINTINGhPRESSESQ Patented Jan. 22 1918.

Application filed July 20, 3.915. Serial No. 4%921.

, provcments Relating to the linking A an ruins of Printin. dresses, of which the fob lowing 1s a specification.

is mvention' reiates to the inking apparatus of printing presses and has for its object to insure greater uniformity and more efiectlve and flexible control in the appl cation and distribution If or nk.

rotary printing presses the application of ink on startin and when stopping is frequently considers. sly less than that applied during the normal running of the gross, owing to the flexibility of the duct lads and to the fact that during slow rotation of the ink duct roller on starting and stopping, the film of ink applied is thinner, while the movement of the duct roller is a slower, so that in the result, the-pages printed by'the press during the period of starting and speeding up as well as during the period of stopping or slowing down are faintly printed, I

he invention has for its object to avoid this result, and according to the invention 1 provide means whereby the movement of e the inking mechanism may be adjusted not which the motors of the inking mechanisms lit) to fell below a certain so as thus to insure the adequate and automotic application of ink at periods of start ing or speeding up and slowing down and stopping the press. The arrangement is such that the normal Working of the press is not interfered with as the supplementary feed is automatically put into or'out of operation at desired periods, as the press either speeds up or slows down.

According to the invention I may provide separate motors for the operation of the resp'ective' inking mechanisms of the press and I may provide the electric controller of the main motor of the press with contacts by pretermined speed,

may operate even although current is cut off from the main driving motor of the press.

0r again, I may according to the invention provide theinking mechanisms of the prass separately operated by gear and by a motor common to a number of inking mechanlsms or to all the inking mechanisms of the press, the respective mechanisms being caused to operate in synchronism by suitable connecting gear.

t It will thus be understood that by reason of the fact that the inking mechanism is operable from an independent motor, it is ossible for the ink supply to be varied rom a minimum to a maximum during the period of runningof the press as, maybe required, and in addition that when starting the press an adequate supply of ink may he provided by" first setting anism into operation.

The invention comprises the construction which is hereinafter described.

einvention is illustrated in the. accomthe inking mech- Th panymg drawings in Which- Figure 1 represents in partial side elevation and diagrammatically an inking mechanism constructed according to the invention.

- Fig. 2 is a detail View.

In carrying the invention into eflect as illustrated in Figs. 1 and 2 I provide a small motor 'm forindependentlypperating the inkmg mechamsm of the pnntingccuples on each deck and for the purpose I mount on the motor shaft aworm gearing with a worm wheel m mounted upon a vertical shaft n which. serves through bevel Wheel n to impart movement to an intermediate shaft f carried in a bracket f? frame of the machine.

The bevel Wheel n wheel Zmounted upon the intermediate shaft .f and motion is communicated to the latter thereby in the direction of the arrow. The bevel Wheel Z is mounted so as to be operable only in one direction and to run free in the opposite direction.

On the intermediate shaft f a worm gis mounted engaging in a Worm wheel 9. mounted upon the shaft in as usually provided in printing presses and from which shaft movement is imparted to the ductor roller 70 and the ink duct roller 7' in the usual manner by. means ofa cam as indicatcd.

-Thc intermediate shaft 7 also carries a bevel wheel d which engages with a corre sponding bevel wheel (Z integrally provided and connected with the gear wheel cl through which movement is imparted to the distributing drum 0 by means of the gear wheel i The bevel Wheel (1 is mounted upon a bush d and at one end protrudes beyond carried on the side engages With a bevel the face of the bevel wheel d, where it is provided with teeth or projections d with which may engage pawls d by \vh'ch movement may be impartedlif required to the shaft 7 and through the shaft f-to'the inking mechanism from the main drive of the press. pawl d may also be provided which may be brought from its disengaged position which is ind'cated in dotted lines in Fig. 1 into its engaged position so that thus the drive may be also transmitted from the motor on to the ink distributing drumcylinders and rollers. For this purpose spring blades 0! are provided to contact with fiat faces provided upon the respective bosses of the pawls d and d at an angle of 90 one to the otherso that thus the respective pawls may be held by the corresponding spring blade, d" in or out of its engaged positiom The distributing cylinder e has a gear wheel 6 mounted upon its spindle for engaging with the gear wheel d and the gear wheel 0 gears through an intermed ate pinion 6 with the gear wheel a of the type cylinder (1 which is mounted in proximity to the impress on cylinder i as indicated.-

The usual ink distributing cylinders r are mounted so as to rotate upon the ink distributing cylinder e and the ink distributing drum 0, while ink rollers rapply ink to the type cylinder a. These ink cylinders 7- may advantageously be so mounted thatthey may be readily lifted from contact with the type cylinder a.

it will be understood that the respective parts-of the ink mechanism move in the direction indicated by the arrows and that the type cylinder at -is providedwith a free wheel device comprising a ratchet wheel a, and pawls a by which no movement is communicated to it through the inking mechanism when the gear wheel a of the type cylinder is rotated in the direction "of the arrow. i

It will thus be understood that the duc'tor roller k and theink duct roller 1' alone may be operatcdfrom the motor m at any del sired speed and independently of the other I In Fig. 1 one part of the inking mechanism or of the press, and that also the whole of the inking mechanism may be operated independently of the rest of the press, as for example, when it is desired to uniformly distribute the ink before starting the press and so as to insure a proper application of ink upon the type cylinder at the very first impression.

Before starting under normal conditions there are no plates'upon the type cylinder at and therefore the inking rollers 1' will not be in contact with the surface of the cylinder (1. half of the type cylinder is covered by a stereotype plate and in this osition, while the cyl nder (1 is stationary, the ink distributing cylinder 0 with the distributing rollers 1* may be freely rotated but should it \be desired to operate the inking" mechanism after the'plates havebeen mounted upon the. cylinder a, the inking rollers 0 may be lifted out of contact. If-under this condition the motor m-is started the whole of the inking mechanism will be operated but owing to the gear wheel a being mounted so that motion can be-communicated to it only in one direction from the main drive, no motion 18 communicated from the inking mechanlsm beyond the mklng rollers ramder operation of the motor m. The worm gir will also be set into motion on,

the

disconnected operation of the distributing cylinders and rollers will not be required during the normal running and printing period. During thisperlodthe main part of the inking mechanism will be driven in the normal manner and direction from the main:

drive through the gear wheel a, "and the duct cylinder j and ductor roller 7.: will be drlven from the motor m.

The controller of the motor m, may be connected to the controller of the main driving motor of the pressand may act in synchronism therewith. Thus supposing the first contact speed of the motor m be so adjusted that it will drive the intermediate shaft f at 25% of'the mechanism speed adjustable by the whole press, main motor controller is so positioned as to cause the starting of the press, the motor starting contact. for the small motor also closes its circuit and so starts the motor m and causes the rotation of the intermediate shaft f with the result that the ink fed will be thesame is it will be when the corresponding impression and type cylinders reach 25% of the running speed, as by the independent wheel at d the intermediate shaft f is at first running faster and ahead of the main mechanism. When the press attains the 25% of its maximum speed it will overtake the speed of the small motor mand on the speed of the press accelerating further it will drive back to the motor and increase the speed of the motor also but owing to the free wheel interposed at 1 this cannot result and the.

.ever'the speed at which it is desired to pi ck up.

drive and the use of the free then when the lllv By this means it will be found that the inkion the printing surface will be quite mechanism or from the mechanism of the press, substantially as described.

8. I'nking mechanism for printing presses, consisting of ink supply mechanism comprising a'motcr, a free wheel device between the motor and the ink supply mechanism, a worm and Warm wheel device for causing the operation' of the ductor roller, the said ductor roller ink distributing mechanism compris- 10 ing the ink distributing drum and a freeing mechanism and the type cylinder, and a free wheel connection between the ink distributing mechanism and the ink supply mechanism, substantially as described. 1

GEO. W. MASCORDQ Witnesses WILLIAM EDWARD EVANS, SAMUEL GREENBERG.

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