DE8359C - Platen press - Google Patents

Description

PATENT LETTERING

Grade 15.

GEORGE WASHINGTON PROUTY in BOSTON (V.S.A.).

Platen press.

Patented in the German Empire on April 11, 1879.

The new press is shown and given in the accompanying drawings

Fig. Ι a side view of the same with removed Flywheels;

Fig. 2 is a front view with the feed table removed;

3 shows a vertical section according to xx of FIG. 2;

4 shows a horizontal section according to yy of FIGS. 1 and 3;

5 shows a section along the lines of FIGS. 1 and 3;

6 shows a side view of the blackening container on an enlarged scale;

Fig. 7 is a front view of the same;

FIG. 8 shows a vertical section according to xx of FIG. 6;

9 shows a vertical section according to yy of FIG. 7. '

The drive shaft C of the press rests in bearings of the frame A A. On the same sits the crank C, the flywheel D and the gear mechanism b, which engages with the gear c seated on the crankshaft B. The crank d, which is provided with the crank pin e , sits on the shaft E. A similar crank pin f sits on the wheel c at the same distance from the shaft E and exactly in the same axial line as the pin e. FF sma two connecting rods which are connected at one end to the crank pin e and /, while at the other end they are connected to the toothed segments GG seated on the two ends of the shaft H. The segments GG engage in the segments // and the arrangement is made in such a way that one complete revolution of the shaft E causes the segments // sitting at the two ends of the shaft J to oscillate at an angle of approximately 130 °.

Each of the two segments // is provided with two radially protruding arms g and h . The arms g are connected by pins i to the tie rods KK , the opposite ends of which are connected to the two ends of the shaft Q.

The arms h are provided with a slot j which serves as a guide for the rod k. This rod is connected to the saddle / rotatable. The inking rollers mm, which are pressed against the printing form and the inking plate M by the spiral spring η around the rod k , are stored in the latter.

The crucible L is connected to the yoke N in the usual way by the bolts j and the adjusting screws k '.

The yoke or reinforcement rod N is hollow and rotatably connected to the frame AA through the arms p. P The arms are extended beyond its pivot point and at the end of the extension is seated the reel R, against which the eccentrically shaped end of the seated on the shaft H moved back and arm herschwingenden O, Fig. 2 and 3, acts.

The arms p and rollers r partly serve as a counterweight to the crucible and its yoke.

The steel shaft Q extends through the entire yoke N and is mounted in the blocks R , which lie in suitable guides in this yoke and can move back and forth at right angles to the surface of the crucible. The shaft Q can partially rotate in the blocks; it is provided at each of its both ends with eccentric seated to their Ax s pin which are enclosed by the front ends of the rods KK.

At the lying at the left side of the machine pins s is connected to the projecting teeth provided handle S, which uu abuts with this tooth against the lying at both ends of the quadrant T attacks t, Fig. 2, in such a way, that thereby the lever is limited in movement in either direction as it is moved to rotate shaft Q for the purpose of applying and releasing pressure.

An incision ν in the quadrant serves to hold the lever S and with it the shaft Q in their position when the pressure is applied.

The shaft w which holds the holders w ^l is mounted on the crucible in the usual manner. The three-armed lever U is used to move the holder at '' on the shaft w , which is provided with a stop pin iz ² and is weighted at a ^s so that it tends to move the holder away from the crucible.

An arm b 'is rotatably attached to the frame A and is pressed against the stop pin d' by a spring <r ^l , Fig. I.

The blackening plate M rests in a bearing which is mounted in the arm V and carries a fixed push wheel e ' on its pivot below the bearing.

The three-armed lever W sits loosely on the lower end of the pivot pin of this blackening plate. The arm / ', Fig. 5, of this lever comes into contact with part of the arm V and in this way limits the movement of the lever in one direction. On the arm / ² sits one end of the spring g \ which is stuck with its other end on one of the ribs of the bed B. The third arm f ³ is provided with the resilient, reciprocating sliding claw / ι ' , which rotates the sliding wheel e ^l and through the same the plate when the lever X fixed on the shaft J against the outer one, at right angles to the lever W curved end of arm / ³ prices.

^{The lever / 2} , to which one end of the joint / 'is adjustably attached, is seated on the oscillating shaft IT, FIG. 1. The upper end of this joint is connected to the outer end of the lever H ' ¹ , which rotates the roller of the blackening container by means of the sliding claw Zf ^1.

This blackening container is shown on an enlarged scale in FIGS. 6, 7, 8 and 9. A ¹ is the actual container, which consists of three vertical side walls a ⁴ and a curved bottom b ", the front wall c ^{2 of which is} bent up. The walls a ⁱ are connected at the top by the crosspiece d ^1. The container is at the front and at the top The lid A, which can be rotated by means of a hinge, lies above it.

C ² is a fork-shaped frame in which the bearings c ^{3 of} the shaft D ^{1 are} mounted. On the shaft ^1, the roller D JS ¹ is seated.

In the lower end of each arm of the frame C ^'2 is an open slot g' ^1, wherein the z in the walls ^<4 screwed pins ² h embraces.

In the cross piece of the frame C ² sits the adjusting screw F \ which rotates freely in this frame, but cannot be displaced in the direction of its longitudinal axis. May be the same inserted in a thread of the cross-piece d ^'1 so as to DAF by rotation of the screw, the roller £' approach or determine the amount of entrained from the roll at its rotation blackness by the same peel-and in this way the margin c ~ of the ink container .

At the outer end of the shaft D ' sits the pusher wheel G', which is rotated by the pusher claw H ^{1 which} is rotatably attached to the lever H ² and is provided with a counterweight. One end of the lever ZT ² sits loosely on the shaft D ¹ and, as already mentioned, is connected to the joint / 'at its other end.

With the help of the ear / ¹ , Fig. 6 and 1, and the screw bolt z ' ² inserted in the slot i' and in a hole in the arm Z ¹ , the blackening container is ^{attached to the arm Z 1} and opens up by moving the ear Adjust the previously loosened bolt within certain limits.

The shaft C is rotated by the pedal M \ the rod iV ¹ and the crank C. When the machine is in operation, the drive pulley is placed on the right-hand end of the shaft.

The course of the press is as follows:

If, in the position of the parts shown in the drawing, the sheet to be printed is placed on the pan and the shaft C is then rotated, the same runs the segments GG, the shaft through the intermediary of the shaft E, the crank pin e and / and the rods FF H and the segment-shaped eccentric O partially rotate. The segments GG rotate the segments // and these in turn guide the blackening rollers mm over the mold and partly over the blackening plate M ₁ so that they come into contact with the roller Έ ¹ and remove the required amount of blackness from it. At the same time, by means of the arms g and rods K , they move the crucible Z into the position in which the pressure is effected.

When the segments // begin their movement, the rods KK move the shaft Q with the blocks R without bringing the crucible out of its rest until just before the front ends of the blocks R with the end of the guide installed in the yokes JV Come into contact. The crucible is then moved forward with full force.

As it moves forward, the crucible comes into contact with the holders w ^l and moves them forward, while at the same time turning the shaft w against the pull of the spring c '; the arm b ' is turned by the pin a'- and thereby tensions the spring c \

When, after printing, the crankshaft makes the last half of its revolution and the crank pins e and / begin to move upwards, the movement of the segments GG and // of the inking rollers mm and the rods KK is reversed and the plate Z with the yoke JV is moved back until the roller υ comes into contact with the concentric part of the eccentric O , whereupon the crucible is stopped and remains at rest while the rods K and the shaft Q complete their movement and thus give full time to apply a new arc, during the Crucible is at rest.

The tension of the spring c \, which acts against the lever b 'and through the same on the lever U , forces the holder w ¹ to move with the crucible and to press onto it,' until the lever b 'with it

the pin d ^l comes into contact and holds the holder while the crucible continues to move and the same runs back in the position shown in Fig. ι and 3, in which they are held by the counterweight a ³ and the lever b '.

When the inking rollers mm move downwards, and just when they have left the inking plate M , the oscillation of the shaft J brings the angle lever X into contact with the bent arm / ^{3 of} the lever W and rotates it, whereupon the sliding claw h ¹ and of the sliding wheel e 'the blackening plate M is partially rotated about its axis until the movement of the shaft H in this direction ceases. If this shaft then rotates in the opposite direction, the lever W is moved in the opposite direction by the tension exerted by the spring g ^% on the arm / ² , the sliding claw k sliding over the teeth.

Claims (8)

Patent Claims: 1. In a printing press the two crank pins e and / in connection with the two rods FF, the segments GG and //, the two tie rods KK and the crucible L, essentially as described and shown. 2. The two tooth segments // in connection with the radial arms g and h, the pins i and guides j, essentially as described and shown. 3. The crucible yoke N, consisting of two parts, in connection with the arms pp and the eccentric O, essentially as described and shown. 4. The platen L of a printing press in connection with the tie rods KK, the hollow yoke N, the shaft Q, the eccentric journals js , the bushings or blocks RR and the shaft Q, essentially as described and shown. 5. The crucible L, the hollow yoke N, the shaft Q with eccentric pin u in connection with the tie rods KK, the quadrant T and the hand lever S, essentially as described and shown. 6. The reciprocating platen of a printing press in connection with the shaft w, the weighted lever U, the lever b \ of the spring c ¹ and the fixed stop d ^l , essentially as described and shown. 7. The blackening plate M, the sliding wheel e, the three-armed lever W, one arm / ^{3 of which} is bent at right angles, the resilient sliding claw k ^l , the spring g ^l and the angle lever X, essentially as described and shown. 8. The blackening container A ¹ with a fixed scraping edge c " in connection with the frame C ² , the roller E ¹ and the adjusting screw F ¹ , essentially as described and shown. In addition 3 sheets of drawings.