US1850653A - Sheet registering device for use in printing and the like machinery - Google Patents

Description

March 22, 1932. VBINGHAM 1,850,653

SHEET REGISTERING DEVICE FOR UsE IN PRINTING AND THE LIKE MACHINERY Filed July 22, 1930 I 2 Sheets-Sheet 1 March 22, 1932.. A. BINGHAM 1,850,653

SHEET REGISTERING DEVICE FOR USE IN PRINTING AND THE LIKE MACHINERY Filed July 22, 1930 2 Sheets-Sheet 2 INVENTOR My W Z%WWVW Patentedzli/lar. 22; 1932 umrao? srnrs s ARTHUR IBINGHAM, OF LONDON, ENGLANDJ e rnNr orr cn SHEET REGISTERING DEVICE FOR USE IN PRINTING ANDTHE MACHINERY Application filed July 22, 1930, Serial No. 472,688, and in Great Britain August 2, 1929;

This invention relates to improvements in sheet registering devices for use in printing andlike machinery, and had for its object the provision of means for ensuring that a sheet is correctly registered when it is transferred from one unit of a machine to another. For instance, in a multi-colour printlng machine it is essential that thesheet shall be correctly registered in each printing unit in order that th various colour impressions shall be correctly disposed with respect to one another. 1

The present invention'comprises a sheet registering device wherein stops are arranged .5011 or near the periphery of the printing or like rollers, adapted to receive the leading edge I of an incoming sheet and correctly register the same, and means are provided for removing the stops from the path of the sheetas the latter commences to pass between the rollers.

icutting rollers :2 which severthe -web int-o sheets of the required length. An intermediate pair of feed rollers 3pass the cut sheet to the printing mechanism comprising an engr ved roller 4 rotating in a loath of ink 5 and furnished with a scraper or doctor 6 in the usual manner.

The impression roller 7 is provided with an automatic stop or registering device 8 which will be described in more detail with reference to Figs. 2 and 3.

Referring to Fig. 2, it will be seen that the impression roller 7 is hollow and has a recess 9 cut in oneportion ofits periphery, the. recess being about equal in depth, tothe thickness of a sheetof paper. A. hole :10 is cut in the wall of the hollow drum at. the

recessed lportionyand the stop 8 projects which runson a cam. l8adj ustably fixed to the frame of'the machine. I

When a sheet is fed into the printing unit from the cutting unit the stop 8 is in, the vertical position shown in Fig. 2 and forms an abutment which exactly registers the front edge of the sheet.:v The stop 8 remains fixed for a short time as themotion of the cam. roller up the incline19 of the cam neutralizes the motion of the stop 8 due to the rotation of the roller 7 so that the stop remains stationary until the roller reaches the top of the cam at which instant the end 20 of the-hole 10 also reaches the stop, after which the stop rotates with the roller. 1

As the stop 8 and surface 20 contact, the working surface of the roller 7 also contacts with the sheet and carries it forward in convided withanother roller 21 which runs on the "lower :surface of the cam and prevents any such displacement of the stop 8 to the momentum of theparts.

owing 90" A pair of springs 22 are attached to the stop 8 to take up any play in the moving parts.

Referring to Fig. 4:, it will be seen that the impression roller 22 is carried on an arm 23 pivoted at 24 to a fixed portion of the machine and a roller 25 mounted on an extension 26 of the arm 23 runs in contact with a cam 27 mounted on the printing roller 28 so that the roller 22 is lifted out of contact with the roller 28 for a small portion of a revolution during which time the registering of the sheet takes place.

A spring 29 pulls the roller 22 into contact with the roller 28 when the cam 27 permits this movement. In this case the stop is in the formof a shroud 30 loosely pivoted on the spindle 31 of the roller 22 and an arm 32 furnished with a roller is operated by a cam 33 to remove the shroud 30 from the position shown in the figure. As the roller 22 commences to drop on to the roller 28 the cam 33 which is driven by gears, as shown, commences to lift the shroud and after the sheet has registered against the vertical edge of the shroud the same is swung out of the path of the sheet as the roller 22 drops.

Although I have described the invention as applied to printing machines, it will be obvious that it can be applied to other forms of machinery where it is desired to feed a sheet from one unit to another and maintain accurate register of the same.

What I claim as my invention and desire to secure by Letters Patent is 1. A sheet registering device adapted to be employed in connection with impression cylinders of printing presses or thelike, comprising, in combination, a stop disposed adjacent the periphery of said cylinder and comprising a pivoted member carried by said cylinder and adapted to receive the leading edge of an incoming sheet and correctly register the same, and a cam adapted to actuate said stop to cause it to remain stationary during the registration of the sheet and to move together with said impression cylinder when registration is effected.

2. In combination with an impression cylinder of a printing press or the like which is mounted upon a shaft and is adapted to rise and fall with relation to a printing roller, a sheet registering device comprising, in combination, a stop pivoted to the shaft of said cylinder and means including a cam for causing said stop to remain stationary during the registration of the sheet and to move out of the path of the sheet as the impression cylinder moves toward the printing roller.

3. In combination with a hollow printing or like cylinder which is provided with a spindle, a sheet registering device consisting of a stop pivoted upon said spindle and adapted to extend through and beyond the periphery of said cylinder, means for opersignature.

ARTHUR BINGHAM.

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