US2206620A - Compensator mechanism - Google Patents

Description

A. A. SCHWARTZ July 2, 1940.

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I I I l l J L Patented July 2, 1 940 PATENT OFFICE 2,206,620 coMrENsA'roa MECHANISM Arnold A. Schwartz, Plainfield, N. J., assignor to Wood Newspaper Machinery Corporation, Plainfield, N. J., a corporation of Virginia Application December 23, 1938, Serial No. 247,324

7 Claims. (Cl. 271--2.1)

In web printing presses are always used what are commonly known as compensator rolls. These rolls are so arranged in combination with other parts, that they engage the web so as to form an adjustable loop in the running web.

5 In multiple color presses a compensator is required between each two adjacent impressions, this being the means whereby the colors from each impression are precisely deposited in matched relation to the previous impressions. The registering of margins or colors is always observed by the pressman at the delivery of the folder. For this reason it has been common practice to so arrange the compensator adjusting means that it could be operated by hand from a position close to the delivery. The common practice has been to lead an adjusting rod from each compensator to the adjusting position, from which place it then would be possible to operate each individual compensator by turning a hand wheel attached to each rod.

As it is quite common that a large number of compensators is required on a press itcan be understood readily that this arrangement in several ways proves unsatisfactory, one of the difliculties being the cluttering up of the space around the folder with a cluster of rods and hand wheels. Another bad objection lies in the dimculty of the operator locatinginthe cluster the proper hand wheel belonging'to the compensator which needs adjustment.

The objects of this invention are to reduce the above objection; to .reduce to asingle rod and single adjusting wheel the above mentioned cluster of rods and wheels; to make it possible to 5 locate the proper compensator on a color press by simply pushing an adjusting button having the same color-as the color being printed on the'impression couple requiring adjustment; especially 7 to provide a single means by which all the different compensators on the press may be operated, and to provide one hand operated rod running to all theeompensators, but making the by connection in an electric circuit, energizes a solenoid which connects the operating rod to the adjusting screw of the desired compensator.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which a Fig. 1 is a side view of the compensators and push button station of one embodiment of this invention;

Fig. 2 is a side" view of the solenoid operating mechanism at each compensator therefor on enlarged scale;

Fig. 3 is an end view of the same.

Fig. 4 is a side view of parts shown in Fig. 2, with the clutch open instead of closed;

Fig. 5 is an enlarged side view of one of theadjusting mechanisms;

Fig. 6 is a diagrammatic view and wiring diagram of a modification in which a motor replaces the hand motion for turning the adjusting rod;

Fig. 7 is a similar view in which a ratchet motion is used r'or turning the adjusting rod, and

Fig; 8 is an end view of the ratchet motion of Fig.7.

This invention is shown, especially in Figs. 1 to 5 inclusive, as applied to a color press, though the details of the press are not shown. The web supply and course of the web are shown as far as necessary to indicate some of the compensating rolls 33.

An adjusting rod I0 is revolvably supported at each ,compensator position I4 and iii. The extreme end of this rod, next to the folder F isconnected by mitres l3 and a rod i2 to an operating hand wheel ll. Looking especially at Figs. 2 and 3, the rod III is revolvably supported in bushings I! of which the left end is pressed into a poppet It. This poppet is in turn secured to a main support bracket ill by a nut 20. On the opposite end of the bushing I1 is loosely fitted a bevel gear 2| which is kept from shifting end wise by a shoulder in the middle of the'bushing I! in one direction'and by a collar 22, which is set screwed to the shaft ill, in the other direction.

The bevel gear 2| meshes with a larger bevel gear 23 which is revolvably fixed on apin 24, this being an integralpart of the poppet l8. A washer 35 and screwhead 36 prevent end motion oi the gear 23. The bevelgear 23 also meshes with a smaller bevel gear 25. This gear is secured to the upper end of an adjusting screw 26' which is revolvably secured to a bracket 21. It is kept from end motion by the gear 25 on the end of a screw rod and collar 28 which both fasten to the rod on opposite sides of the bracket -21. The upper end of the bracekt 21 is pivotally mounted on an extension of the poppet l allowing the screw 26 freedom to swing in the direction right and left as looking at Fig. 2.

The screw 26 engages the poppet 29 which is pivotally mounted in a fork in the end of a lever 30, Fig. 1. This lever is fixed to the outside end of a compensator support shaft 3| which extends across thepress. At each side of the press inside of rails 34 are mounted levers 32, which carry and act as bearings for one of the compensator rolls 33. The shaft 3| is loosely mounted in holes in the rails 34, located at both sides of the press. On the lower ends of the screws 26 are fastened.

From a study of the above description it will be found that up to now, the hand wheel H can be turned freely in either direction without accomplishing anything but revolving the main adjusting rod Ill.

In the following will now be explained the mechanism which makes it possible to adjust any desired compensator by simply-pushing one of the buttons 5|, which is allotted to this specific compensator, and then turning the hand wheel Looking at Fig. 2 it will be found that the back end of the gear 2| is furnished with a clutch face of V-shaped jaws. In back of the mitre and slidably fitted to the rod I is located a sliding clutch 31 which, on the side facing the bevel 2|, has a clutch face matching the face on the mitre. This clutch is free to slide far enough back and away from the gear 2| to disengage its clutch teeth from those of the bevel gear. Its furthest motion backwards is limited by a stop collar 38 which is set-screwed to the rod l6.

The clutch 31, which is connected to the shaft ID by a sliding feather, can be-moved in or out of engagement with the clutch face on the bevel gear by the motion of two levers 39 and 40. These levers pivot around a center 4|. They always work in unison as one lever, the spring 42 and stop 52, which will later be explained, only acting to keep both levers in normal working position,

At the upper endof the lever 39 is connected 'the toggle link 43 which connects the lever 39 to a lever 44. fastens to a solenoid core 45 by a pin 46. The lever 44 pivots on a center '50. The solenoid 41 is connected in an electric circuit with one of a. series of push buttons adjacent to the hand wheel I A pull spring 48 will, when the solenoid is not energized, break the toggle formed by the lever 44 and link 43, and the core 45 will be lifted to the position shown in Fig. 4.

As the toggle is brokenand the spring 46 contracts, it will pull the lever 39 towards the solenoid This will cause the lever 40 to pull away from the solenoid and through rolls 49 in the lower end of the lever 4|], which enter a circumferential groove in the clutch 31, will disengage The other end of the lever 44- cause the toggle formed by the lever 44 and link 43 to lock and in turn push the lever 39 in the direction away from the solenoid. This in turn will cause the lever 46 with the rolls 49 to push the clutch 31 into contact with the clutch face on the gear 2|. By now turning the hand wheel II, the rod |ll'wi1l be caused to revolve. The clutch 31 will turn the bevel gear 2|, which in turn will revolve the gear 23 which then will revolve the gear 25 and the adjusting screw 26.

As the adjusting screw 26 revolves it will cause the arm 30 to move up or down, as required, by

the screw 26 engaging the poppet 29. This lever, being fast to the end of the shaft 3|, will cause the same to turn and thereby shift the compensator arm 32 and compensator roll 33 to either side, as required for adjustment.

The'only reason for the spring 42 and stop 52 is, that should it ever happen that the tops of the teeth in the clutch 21 and those on the gear 2| clash instead of closing, the spring 42 will simply compress until the rod ID has been sufficiently revolved to release the teeth and allow the clutch to close.

0n color presses, the push buttons may, if so desired, be painted in the same colors as the ink being used in the printing unit to which the certain button is allotted. By this color system the pressman no longer needs to remember which unit is printing the color in question, neither does he have to worry about which button belongsto a certain unit. He simply pushes the button having the same color which he wishes to register.

Another way of locating the buttons is, of course, to number the buttons in accordance with the number of theunit'to which each button is assigned.

In Fig. 6 is'shown an arrangement where the formerly hand operated adjusting rod I0 is revolved by a reversible motor 60. This motor is secured to the support rail 34 by a bracket 6|. On the end of the adjusting rod I0 is mounted a gear 62 which meshes with a motor pinion 63. This gear 62 is secured to the rod I9 by a friction clutch 16 which, by a sliding feather, is kept from revolving on the rod Ill. The reason for this clutch is that should, for some reason or another, undue strain be put on the revolvin of the rod l0, no damage could be done as the clutch would slip and the motor could revolve. The end of the rod I0 is revolvably supported by a bearing 64 which is secured to the rail 34. Adjacent to the push button station 5| is placed another station 65 having two buttons. These buttons are so connected in the electric circuit to the reversible motor 60, that one button acts to turn the motor in clockwise direction while the other will reverse the motion. When to operate the rod I0 in both directions. In this arrangement, the same as in Fig. 6, is used a two button station 68in addition to the station 5|. The solenoids are so connected in the electric circuit by a button 68, that one of the buttons acts to energize the solenoid 66 and the other the solenoid 61. When one of the solenoids is energized it will pull the core 69 or 16 respectively, into '13 will engage with a ratchet wheel I4 which is secured to the rod "Land turn the wheel the length of the stroke.

When the button 68 is released, and the solenoid no longer is energized, a spring I5 will return the pawls to their original positions. As the ratchet wheel 14 will move only one fixed distance when pushing a button 68, it will be necessary to give the button as many pushes as necessary to move the compensator the required distance. v

The pawls. are so arranged that, at the neutral position of the stroke, they rise out of contact with the ratchet wheel, and will not again engage with the wheel before being-urged in a forward direction by the action of the solenoids. The solenoids and ratchet motion are all sup-" ported by a support bracket l8 which is securely fastened to the support rail 34. By pushing one, or the other, of the buttons 68 the rod l0 may be turned in the required direction for adjusting purposes.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed. otherwise than as set forth in the claims, but what I claim is:

1. In a printing press, the combination with a plurality of movable compensators all engaging the web and forming loops therein, of a single means by which all, and any, of said compensators may be adjusted and means connecting said single means with each of said compensators.

2. The combination with guide rolls for gum-Y ing a web in a printing plant, and a plurality of compensator rolls engaging and forming loops in said'web, adjustable tofcompensate for any give and take in the web, of arod extending throughout a series of'said compensators, means for rotating said rod, an adjusting rod for each compensator, independent means for connecting each adjusting rod to the first named rod,a push button for each compensator, and meanswhereby each push button controls the connection of the first named rod with an individual adjusting rod designed to cooperate with that push button.

3. In a printing press, the combination with a plurality of movable compensators all engaging the web and forming loops therein. of a rotatable longitudinal rod, a plurality of adjustingrods adjacent thereto, means connecting each of said adjusting rods to a compensator for adjusting it,- the said longitudinal rod constituting a single means for operating all and any of said adjusting rods and thereby controlling the compensators. V j e 4. In a printing press, the combination with a plurality of movable compensators all engage ing the web and forming loops therein, of a rod connected for operating a plurality of the com- 'pensators, manual means for rotating said rod, a a

series of push buttons, solenoids and electric,

, lever connected with said plunger to be operated thereby, a link pivoted to the end of, the lever, a second lever pivotally connected with the link to form a toggle, a spring connected with the toggle at its joint to normally move the first named lever to a position to draw the plunger part way out of the solenoid when it is not energized, a compensator adjuster, and a clutch operated by the second lever for connecting the compensator adjustor with a source of power.

6. In a web-using machine, the combination with a plurality of compensators capable of being adjusted to lengthen or shorten a loop of web, a single operating means'adapted to oper- *ate in forward or reverse direction, of means for ,selectively connecting any one or more of the com- (pensators to the single operating means.

'7. In a printing press. the combination with a plurality of movable compensators all engaging the web and .forming loops therein, a series of push buttons, solenoids and electric wires, each running fromone button to one of the solenoids, an adjusting screw for adjusting each compensator individually, and means connecting each adjusting screw with a solenoid, the solenoids being individually connected to their adjusting screw for operating solenoid is energized.

ARNOLD A, SCHWARTZ.

them when the respective

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