US1478935A - Machine for casting stereotype plates - Google Patents

Description

Dec. 25,1923. 1,478,935

7 C. WINKLER MACHINE FOR CASTING STEREOTYPE PLATES med Sept; 23. 1922 2 Sheets-Sheet 1 Dec. 25 1923.

' C. WINKLER MACHINE FOR CASTING STEREOTYPE PLATES- 2 Sheets-Sheet 2 Fil ed Sept. 23, 1922 a TrORMFK-S moved by eccentrics.

Patented Dec. 25, 1923.

o sirens CARL WINKLER, or BERNIE, SWITZERLAND.

MACHINE FOE- GAS'IING STEREOTYI'E PLATES.

Application filed September 23, 1922. Serial No. 590,191.

To all whom it may concern: 1

Be itknown thatI, CARL WINKLER, a citizen of the Swiss Republic, residing at Berne, in the Swiss Republic, have invented new and useful Improvements in Machines forCasting Stereotype Plates, of which the following is a specification; 7

In machines for casting stereotype plates, in which the box, during the castingoperw tion, is adjoined to a slot in the bottom of.

the metal melting pot, said box, whichgconsists of a core and bed, must be moved away from the pot after a plate has been cast,-

in order to facilitate its opening for the purpose of taking out the plate. These movements have been obtained up to the present by two systems of toggle levers This construction, however, renders the machine somewhat complicated, and it has the further drawback, that in the event of the coupling giving way, the box-will fall away from the pot by gravity, before the casting operation is finished, thus uncovering the metal outlet of the pot, with the result that the pot is emptied more or less on the floor of the shop. e Acco'rding to my invention these drawbacks are overcome by rigidly attaching the core to, a tilting frame, in which the bed is adapted to slide, and by ada ting this frame to be'raised and lowered y a crank to press the box alternately against, and to move it away from, the pot, respectively, whilst by a second crank the bed is moved in the frame, the movement being so timed that the box is closed, or opened, according as the frame is raised or lowered. The crank shaft is preferably turned by worm gearing. I

In the accompanying drawing illustrating my invention:

Fig. 1 is a side elevation and port section of the frame carrying the box, showing' the melting pot in vertical section. n

Fig. 2, a section on the line A-.-B in Fig. 1.

Fig. 8, a side elevation of the machine, showing the driving gear in section,

Fig. 41 is a plan of the driving gear alone,

Fig. 5, a section on VAB in Fig. 4:, and

Fig. 6, a series ofsketches showing parts of the driving gearin different positions.

The melting pot 1 has an outlet 3 controlled by a cock 2 (Fig. 1) and this opening adjoins the box, when the core 4 and bed 5, forming this box, are brought into their raised position. The core '4 is fastened to the frame 6, whilst the bed 5 is adapted to be, guided by a slot 7 when the box is opened, or closed. .To press the closed box against the'pot 1 the frame6 is turned about the pin 8. This motion of the frame 6 is obtained from the shaft'9, which is journailed in the frame 6 and connected with the bed plate 12 bythecrank pins 10 and links 11. These links 11 are resilient'in a longitudinal direction, as will be seen from Fig. 1. hen the shaft 9 turns, the frame 6, owing to. its connection with the base plate 12, is moved alternately up and down,

and during each revolution, the box ,is pressed resiliently once against the mouth 3 ofthe melting pot 1, and then moved away from same. In order to assure that the box, when it reaches the pot, is always closed, but open agaimwhen in the lower position, the bed adapted to slide in the slot 7 is moved up and down by means of the ,oon necting rod 13 and crank shaft 14:.

For the purpose of obtaining the necessary movements the motor 15 is provided,

on the shaft of which the fly-wheel 16 is so mountedthat it, must rotate with but can slide longitudinally on said shaft. In one end position the fly-wheel 16, which is con structed as part of a coupling, is brought into engagement, with'the couplinglpart 17,

which is fastened on the shaft 20, journalled at 18 and 19, and carries a worm 21, which engages inthe'worm-wheel 22.

This wormwheel is seated loose, and the disc 23 as well as the disc 24 are fixed on the crankshaft I 25, which, on one end, carries the crank 26, and, on the other end, the coupling sleeve 27, which can slide, but not turn,

on said shaft. In the end position shown in Fig. 5 this. sleeve communicates the rotation of the worm-wheel 22 to the shaft25, consequently also to the crank 26 and disc 23, whilst in the opposite end position the sleeve 22 comes into engagement with a claw 28, the shaft 25, crank 26, and diso23 being then fixed in position.

' 'By the toothed part'of the disc 23 the spur-wheel 29 is turned, which is keyed on the crank shaft 31 serving to move the box I by means of the connecting rod 30. On this shaft is seated, further, the. ratchet wheel 32, which, in every revolution of the wormwheel 22, is turned periodically by the'projections through two teet In the intervals the ratchet wheel 32 is held by a pawl 36 engaging in the ratchet wheel 35, said pawl having a projection 37 sliding on the circumference of a flange 38 on the side of the Worm-wheel, being thus held in contact with the ratchet 35. At the moment in which the ratchet wheel 32 is turned by one of the projections 33, 3 1, the necessary retreating movement of the pawl 36 is rendered possible by a recess 39 in the flange 38.

With the ratchet'wheel 32 rotates the sleeve 40, which by'means of the lever 41 moves the coupling 27 into engagement with, and then away from, the worm-wheel 22 once for each rotation of the ratchet wheel.

Each time the coupling 27 comes into engagement with the worm-wheel, this wheel, which otherwise rotates loosely on the shaft 25 will move the following parts:

1. The crank 26, and, consequently, also the cock 2, from the position A through the position B into the position C (Fig. 6) the actual opening of the cock taking place towards the end of the arc of 130 through which it is moved, thus from position 13 into position C. a

'2. The disc 23 which, in turning from the position A into position B (Fig. 6), turns by its teeth, the spur wh'eel 29 and crank 3i through about 180, thus closes the box and raises it towards the melting pot 1. Owing to the absence oft'eeth on a part ofthe circumference,

the {disc 23 continuesits rotation independ ent of the spur wheel 29 from the position B into C, until the crank 26 has finished its rotationof 180,and the cock is open. Thereafter the coupling '27 is moved into the ,opposite ,end position, whereupon the shaft25 is again fastened. i l

Inthe position C, in which the box is filled with melted metal from the pot and theplate thus cast solidifies, the parts remain stationary about 12 seconds) until the ratchet wheel 32 has been turned through a complete revolution by the projections 33, 341. The coupling 27 is then brought into engagement. with the worm-wheel 22 again, and, by so doing, the shaft 25 is turned through 180, thus out of the position G through D into A, which, as, long as the non-toothed part of the segment is directed towards the stationary spur-wheel 29 (position C), causes the cock to be closed by the crank 26, and then, by the engagement of the toothed part of the segment with the spur-wheel 29, rotates the crank 31 by whlch the box is lowered and opened, to

venable the cast plate to be taken out by hand.

7 Indie position B, C and D, in which the spur-wheel 29: is not held any more by engagementwith the toothed part of the disc 23' the concave part 42 engages the circumkeyed on the shaft 26,-

ference of the disc 24, so that it is not possible for the box to fall away from the pot.

To enable the coupling 1.6, 17 to be put in and out of gear the lever i7 is provided, which, in the lowered position, moves the fly wheel 16, by means of the fork 4-5, against the stationary coupling part 17 thus putting the machine into action for casting. By the same movement the disc 46, will be moved away from the coupling part 17. in the lower positionvthe lever 13 will be held by the pawl-lever 17, which, for this purpose, is provided with a tappet 48 adapted to engage over the tappet 49 on the lever-43. As soon as the casting operation is com- .pleted, and the disc 23 and spur-wheel 29 1. A casting machine for stereotype plates,

and the like, comprising in combination, a melting pot, a tilting frame, a box core rigidly fastenedto said frame and adapted in the tilted up position of said frame to press against said pot, a bed adapted to slide in said frame, a crank to tilt said frame up and down, and a crank to move said bed in said frame, substantially as, and for the purpose, set forth. I

2. A casting machine for stereotype plates, and the like, comprising in combination a melting pot, a tilting frame, a box core rigidly fastened to said framefand adapted in the tilted up'position of said frame to press against said pot, a bed adapted to slide in said frame, a crank to tilt said frame up andd'o'wn, a resilientsupport for said crank, and a crank to move said, bed in said frame, substantially as, and for the purpose set forth, V

3. Casting machine for stereo-plates, and the like, comprising in combination, a melt ing pot, a cockadapted to open and close an opening in'saidj pot, a tilting frame, a box core rigidly fastened to. said frame and adapted in the tilted up position of said crank-shaft carrying said spur-wheeland adapted by the periodical motion to, move said boii in the closed casting position and open position for tal'ring out a cast plate respectively, substantially as, and for the purpose, set forth. V

4. Casting machine for stereo-plates, and the like, comprising in combination, a melting pot, a cock adapted to open and closean opening in said pot, a tilting frame, box core rigidly fastened to said frame, box-bed adapted to sliderin said frame, crank to tilt said frame up and down, crank to move said bed in, said frame, first shaft containingsaid crank, a second crank shaft adapted to open and close said cock, a tooth-wheel loosely mounted 011 said s mee s second crank shaft, mechanism moved by said toothed wheel and adapted to periodically connect said toothed wheel with said shaft, a third shaft, to turn said first crank shaft, and means to periodically turn said third shaft by said second crank shaft, substantially as, and for the purpose, set forth. 5. Casting machine for stereo-plates, and

the like, comprising in combination, a melting pot, a cock adapted to open and close an opening in said pot, a tilting frame, a box core rigidly fastened to said frame, a box-bed adapted to slide in said frame, a crank to tilt said frame up and down, a crank to move said bed in said frame, afirst shaft containing said cranks, a second crank shaft adapted to open and close said cock,

a tooth-wheel loosely mounted on said second crank shaft, mechanism moved by said toothed wheel and adapted to periodically connect said toothed wheel with said shaft,

a third shaft to turn said first'crank'shaft, means to periodically turn said third shaft by said second crank shaft, a circular disc on said second crank shaft, and a concave piece on sald third shaft adapted in a corresponding angular position to engage with said disc, substantially as, and for the purpose, set forth.

6. Casting machine for stereo-plates, and v the like comprising in combination, a melting pot, a cock adapted to open and close an opening in said pot, a'tilting frame, box core rigidly fastened to said frame, box-bed adapted to slide in said frame, crank to tilt said frame up and down, crankto move said bed in said frame, a first shaft containing said cranks, a second crank shaft adapted to open'and close said cook, a tooth-wheel loosely mounted on said second crank shaft, mechanism moved by j said toothed Wheel and adapted to periodically connect said toothed wheel with said shaft, a claw tohold said second crank shaft stationary when the connection with the toothed wheel is undone, a third shaft to turn said first crank shaft, and means to periodically turn said'third shaft by said

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