US1175812A

US1175812A - Automatic cutting or severing device for clay-presses.

Info

Publication number: US1175812A
Authority: US
Inventors: Johann Riedemann
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-05-10
Filing date: 1912-05-10
Publication date: 1916-03-14
Anticipated expiration: 1933-03-14

Description

1. manen/mmv.v AUTOMATIC CUTTING 0R SEVERING DEVICE FOR CLAY PRESSES.

APPLICATION FILED MAY I0. 1912.

l l 75 ,8 1 2 Patented Mar. 14, 1916.

3 SHEETS-SHEET l.

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THE COLUMBIA PLANOGRAPH C0.. WASHINGTQN. D. c.

I. RIEDEMANN.

AUTOMATIC CUTTING 0R SEVERING DEVICE FOR CLAY PRESSES.

APPLICATloN FILED MAY 1o, 1912.

l, 175,812. Patented Mar. 14,1916.

3 SHEETS-SHEET 2.

THE COLUMBIA PLANOGRAPH co.. WASHINGTON. D. c.

1. RI'EDE'lI/IAIIII.y AUTOMATIC CUTTING 0H SEVERING DEVICE FOR CLAY PRESSES. APPLICATION FILED MAY I0, I9I2.

1,175,812. Patented Mar. 14, 1916,

3 SHEETS-SHEET 3.

Inventar Wil-neuw.' 2 Raw THB COLUMBIA MNOGRAPM cn.. wAsHlNIJ'mN. D. c.

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AUTOMATIC CUTTING OR SEVERING DEVICE FOR CLAY-PRESSES.

Specification of Letters Patent.

Patented Mar. let, 191e.

Application filed May 10, 1912. Serial No. 696,543.

To all whom it may concern Be it known that I, JOHANN RIEDEMANN, a subject of the German Emperor, residing at Glinde, near Uetersen, Schleswig-Holstein, in the German Empire, have invented a new and useful Automatic Cutting or Severing Device for Clay-Presses, of which the following is a specification.

The invention relates to an improved aultomatic cutting or severing device for clay presses with positive movement of the cutting table or carriage and of the cutting frame, and in which a main shaft is initially actuated by the contact of the clay stream with a movable drop-flap upon the release of a clutch or transmitting mechanism through the medium of a roller disk.

The characteristic feature of the inventicn is, that between the roller disk and the main shaft, intermediate gearing is inserted, in order to permit the main shaft to be stopped within a fraction of a revolution, by a hand or foot operated, disengaging or arresting mechanism. rilhe starting gear of the machineis thereby so improved that it operates upon the lightest push of the clay stream against the drop liap, and the clutch runs free upon the release of the intermediate levers. l/Vith previously known arrangements the clutch could only be released once by the starting gear during one revolution of the main shaft, and only when the clay stream pushed against the drop flap. Should the carriage, however, be started by the crank, before the rod of the drop Hap releases the clutch through the intermediate lever, the cutter would not move, and the clay stream would be deformed.

According to the present invention the releasing rod of the drop flap communicates directly with the clutch and sets it free, so that by means of the intermediate gearing the main shaft is set in rotation at each fall, and consequently the cutting carriage and cutter are started. The clutch during several revolutions turns the main shaft of the apparatus once only, through the medium of speed reducing gear. Further, the clutch and the whole mechanism can at any time be stopped for the purpose of putting the cutter out of action and in the shortest conceivable time. Upon the front aXle of the cutting carriage there is provided a double feathered crank-slide to give a cushioned to-and-fro motion, by which slide the said carriage is moved backward and forward,

anism.

through the medium of a known intermediate member (connecting rod, or the like) by the main shaft.

The accompanying drawings show apparatus embodying the invention.

In the said drawings: Figure l is a side view of the cutting device. Fig. i). is a longitudinal section of the device viewed from the opposite side to Fig. l. Fig. 3 is a section on the line A B, Fig. l. Fig. l is a section on the line C D, Fig. l. Fig. 5 is a sectional view illustrating the driving mechanism with the clutch and the toothed mech- F ig. 6 shows to a larger scale the roller disk with the clutch and the engaging and disengaging mechanism. Figs. 7 and S are views illustrating the connection of the flap rod. Figs. 9 and 10 are views illustrating the toggles in the extended position, and Figs. ll and 12 are similar views showing the same in the closed position. Fig. 13 is a view illustrating the bearing of the cutting frame and Fig. 14 is a section drawn to a larger scale through the connecting red.

a is the stream of molded clay which is Yexpressed from the molding orifice and passes first over the receiving rollers of the stationary part of the cutting table, and then on to the rollers Z) of the carriage or moving part of the table e.

e is the drop flap which is forced by the moving stream of clay from its forwardly inclined position into the vertical position so that the lever arm d, which at one end is linked by means of the rod cZ/ to the flap e, and at the other end to the rock shaft f, is moved downward, causing the disengaging device 7, which is mounted upon the other end of the rock shaft f, and arranged diametrically opposite the lever d, to move upward out of the path of the clutch h, hereinafter described) to set the machine in motion. The machine is stopped, on the other hand when the device f is lowered into the path of the said clutch, in a manner also hereinafter described. In order that the flap e shall be moved by the lightest impact of the clay, the individual levers of the transmitting mechanism are provided with ball joints. The rod d, for this purpose is forked at its

ends

2 and 3 and is provided with center pins 5 bet veen which is arranged a ball 6 having corresponding holes or recesses for the center pin 7 of the flap c, and of the lever d (Figs. l, 2, 7 and 8).

f2 is a guide rail for the releasing lever f,

the said rail being fitted adjustably upon the machine frame.

Upon thev continuously revolving driving 'pulley or disk mi, which runs loose upon the shaft g there are mounted four rollers Z, and adjacent to the roller disk m there is also loosely mounted a pinion 14 in driving conlis in the circular path of the rollers Z on the rotating disk m and one of the rollers Z, of which four are provided, in order to obtain an immediate engagement, strikes against the said nose, carries it around and so transmit-s the motion of the disk m to the boss 7c and pinion 14. 1

The pinion 14 is geared to the larger pinion 15 which is mounted upon the shaft 17 with the smaller pinion 16, the said shaft being mounted in the frame 18. The pinion 1G drives the main shaft g through the Inedium of the large pinion 20. By such gearing the'clutch ZL is caused to rotate faster than the main shaft g.

The main shaft g carries at its other end the cam disks s, and s, which through the medium of the arm t having a guide roller t engaging the cams, impart a rocking motion to the shaft u which is j ournaled in the frame of the driving mechanism at 8, and extends only to the end of the stationary frame (see Fig. 1).

Y 9 are the toggle links which are attached to and oscillate with the shaft u, and are coupled at the other end to the cutting frame r which is thereby oscillated up and down as the said shaft u oscillates,notwithstanding that the table e can reciprocate. The cutting frame 1, for which a good bearing and an easy movement are also necessary, is connected through the medium of an intermediate joint piece 10 (Figs. 11 and'12) to the toggles 9. The said joint piece 10 is directly screwed to the bearing 11 running upon the pin bearing 12 and the cutting frame r. The other end of the frame r is held in the bearing 13 (Fig. 1).

The carriage or moving part e' of the cutting table is reciprocated by means of the crank n on the shaft g, and the connecting rod g/ (Fig. 14) which is of a special construction designed to allow the carriage e to remain stationary at each end of its travel while the crank n rotates uninterruptedly. The said connecting rod is provided with an end piece 32 in which are screwed the guide rods 33. These rods 33 are formed with central slide ways 34 upon which is mounted a slide block 35, through holes 37 in which the slide ways 34 pass. rlhe slide block 35 consists of two jaws which rigidly grip the spindle 36 of the carriage e.

The limitation for the movement of the slide block 35 is efected by the sockets 38 mounted upon the ends of the guide rods 33 and against the outer ends of whichthere are supplied locking

pieces

40 and 41. The

ends of the guide rods 34 are provided with screw threads and all the parts are securely locked together by means of nuts. At the end 43, adjacent to the piece 32 on the rodg/ the screwed portions of the rods 33 are lengthened in order to provide for the throw of the rods 39 mounted upon the slide block. The distance of the terminal piece 41 from the transverse piece 32 is adjustable by means of the nuts.- In the openings 44 of the terminal pieces there slide rods 39, upon which are coiled on each side of the slide block 35, springs 46 which bear at their inner en ds against the slide block itself and at their other ends against the

terminal pieces

40 and 41 respectively.

The apparatus can be brought to rest in.

any position of the table or cutting frame by means of the hand or foot device 25. If, for example, the speed of rotation of the clutch relatively to that of the main shaft g be 9:1, the machine, during one revolution of the main shaft g can be arrested at nine Y the speed of revolution of the clutch be changed in relation to the shaft w, for

example to a ratio of 20:1, the main shaft can be stopped at 2O diierent.

points during` a revolution. As now the cutting carriage will be moved to-and-fro once by means of the connecting rod y of the crank w, during one revolution of the latter, it can be stopped also during one revolution as oftenas the shaft wis brought to rest, as it is forced tomove by the latter.

The independent arresting or disengag- 'ing device consists of lever mechanism, comprising' a lever 21, which is adapted to be actuated by hand or foot, and which is pivotally secured to the frame at the point 22 and carries at its upper end the handle 23 0f the actual disengaging bar 25 connected to the lever 2l through the medium of the ball joint 24. The bar 25 slides either elastically or freely in the guides 26, Fig. l, and when pushed to its forward position by the handle 23, its free ends is moved into the path of the nose 79 of the clutch Zi, (shown in dotted lines in Fig. 6) and presses the latter in position against the action of the spring z' with its nose 0 against the boss, and holds it in that position so that the rollers Z are clear of the nose 0 and run freely without driving the clutch.

Should the machine be stopped when the crank fn, is making its upward movement, as in Fig. l, the weight of the crank will be tending to reverse the direction of rotation, that is to say, the crank n will drop backward. This backward movement would, of course, remove the clutch t from the lever and allow7 it to be brought by the spring i to its transmitting or driving position, so that the rollers Z would strike against the nose 0 and a knocking set up. ln order to avoid this, a disk 29 is rigidly connected with the boss or disk 7c and this disk is provided with counterbalancing weights 30. By this arrangement the falling of the crank and the consequent rattling during the free running of the machine is prevented.

The whole driving mechanism and the guiding device is, in order to be protected from dirt, inclosed in a jacket or casing 27 which is formed as an oil chamber 28 (Figs. i and 5) for the lower toothed wheels in order that the latter shall run constantly in oil.

The operation of the machine is as follows iVith the parts of the cutting device in the position shown in Fig. l, the clay stream a moves over the rollers ZJ of the cutting table and runs against the flap c and presses this to the left until it stands approximately vertical. This movement of the iap c is transmitted through the medium of the links (Z, cZ, 7c and causes releasing lever f to move so that it is disengaged from the clutch ZL. The left end ZL of the latter is drawn by the spring z' against the boss or disk Z.: so that the nose 0 comes into the path of the rollers Z of the driving disk m one of which rollers is applied again st the nose o and sets the clutch L and pinion lt in rotation. The pinion 14e transmits its rotary motion through the reducing train l5, 1 6, 2O to the main cranked shaft g (which, in the example given, will make only one revolution while the clutch makes 9). The said shaft f/ now commences to turn in the direction of the arrow (Fig. l) and causes the cams s, s to act upon the levers t and more the cutting frame r downward to cut the clay. During this time the table z has remained stationary, which is permitted by the special construction of the spring connecting rod y above described, the left hand spring thereof being in compression and the right expanded as clearly seen in Fig. l. The carriage e now moves slowly to the left until it is stopped by the buffer 1, that is to say, into the position shown in Fig. 2,where it remains at rest for the short time during which the bricks cut from the clay stream are removed, the crank n in the meantime compressing the left hand spring 4G upon its guide rod 39, the right hand spring being' correspondingly expanded.

The frame r, on its downward movement, presses upon the rear horizontal .extension of the iap e and thus forces the flap downward, the latter, as it leaves the vertical position, falling by its ,own weight and resting upon the turned down cutting frame as shown in Fig. 2. The shaft g now rotates further and by means of the cams s, s elevates the frame 1, the upward movement of which automatically lifts the flap c until it assumes the vertical position. It is then drawn into the forwardly inclined position by a small "counter weight placed upon its rod. This movement brings the levers 7 into the path of the now rotating clutch L and engaging` therewith, moves it into the position shown in Fig. 6, in which position the rollers Z run clear of the nose 0 and the machine stops, the table at this moment having assumed its initial position (Fig. l). The stream of clay a continues to move uninterruptedly forward until it again makes Contact with the flap e and turns the latter from the forwardly inclinedl position to the vertical position so that the clutch is released and the operation hereinbefore described, is repeated. `lf it is desired at any moment to stop the machine, the lever 21 is operated so as to bring the end of the rod or bar 26 into the path of the rotary clutch Zt which is brought into the position shown in Fig. 6.

On the inward movement of the crank n the guide "rod at first moves in the slide block compressing one spring, and then gradually draws the slide block with it. The backward movement of the carriage is effected equally quietly and without shock, so that by the improved device any deformation of the clay and the distortion of the bricks severed by the movement of the carriage is obviated.

' What l claim and desire to secure by Letters Patent is l. An automatic cutting machine for clay presses comprising in combination a reciprocating cutting table, a pivoted flap provided upon said table and adapted to be forced in one direction by the clay stream, a clutch device controlled by said flap and revolved by means of a driving disk having rollers, a crank shaft adapted to be turned by said clutch through toothed speed reducing lll) wheels arranged between said clutch and said crank sha-ft, means connecting said crank and said table, a cutting frame provided upon said table, means for operating said cutting frame, and a manually operated device adapted to engage the clutch device for stopping the machine.

2. An automatic cutting machine for clay presses, comprising a frame, a reciprocating cutting table mounted on said frame, a fiap pivotally mounted on said table and adapted to be forced in one direction bythe clay stream, a shaft mounted in said frame, a clutch device mounted on said shaft, means connecting said flap and said clutch, said flap through the connecting means being adapted to control said clutch, a driving pul ley having rollers adapted to engage said clutch when said clutch is released by said connecting means, a crank rigidly mounted on said shaft, means driven by said clutch for rotating said shaft, a cutting frame provided upon said table, means connecting said shaft and said cutting frame, and yielding means connecting said shaft and said table.

3. An automatic cutting mechanism for clay presses, comprising a frame, a reciproeating cutting table mounted on said frame, a flap pivotally mounted on said table and adapted to be forced in one direction by the clay stream, a shaft mounted in said frame, a clutch device mounted on said shaft,vmeans connecting said flap and said clutch, said Hap through the connecting means being adapted to control said clutch, a driving pulley having rollers adapted to engage said clutch when said clutch is released by said connecting means, a crank rigidly mounted on said shaft, means driven by said clutch for rotating said shaft, a cutting frame provided upon said table, means connecting saidV shaft and said cutting frame, yielding means connecting said shaft and said table, said yielding means consisting of a frame connected to the crank having guide rods, ablock mounted upon Ysaid guide rods and connected to the table, push rods connected to said block and passing through said frame, and springs interposed between said frame and said block.

4. In an automatic cutting machine for clay presses having a reciprocating cutting table and an operating shaft carrying a crank, the combination with yielding means connecting said crank and said table, said yielding means consisting of a frame connected to said crank and provided with guide rods, a block mounted upon said guide rods and connected to the table, push rods connected to said block and passing through said frame, and springs interposed between said frame and said block. I

5. An automatic cutting machine for clay presses comprising a frame, a reciprocating cutting table mounted on said frame, a pivoted flap provided upon said table and adapted to be forcedvinV one direction by the clay stream, a shaft mounted in said frame and provided with a crank, a pulley loosely mounted on said shaft and pro-vided with driving rollers, a clutch loosely mounted on said shaft and adapted to engage said rollers at certain times, means connecting said flap and said clutch, said Hap through the c0nnecting means being adapted to control said clutch, a disk rigidly mounted upon said shaft and provided with weights for balancing the crank, means driven by said'clutch for rotating the shaft, means connecting said crank and said table, a cutting frame provided upon said table, means for operating said cutting frame, and a manually operated device adapted to engage the clutch for stopping the machine.

JOHANN RIEDEMANN. lVitnesses:

ERNST Fnniss, HERMANN MEYR.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.