US1907731A - Clay tempering machine - Google Patents

Description

May 9, 1933.

D. BROWN CLAY TEMPERING MACHINE.

Filed. NOV. 7, 1930 4 Sheets-Sheet 1 May 9, 1933. 0. BROWN CLAY TEIPERING MACHINE 4 Sheets-Sheet 2 Filed Nov. 1930 094M @Wn w? 74 l May 9, 1933. D, BROWN CLAY "I'EMPERING MACHINE Filed NOV. 7, 1930 4 Sheets-Sheet 3 1 p v w g m d b a; n O 9 a H m w 1 6 m o a a x O M /H/.. 5 n 2 a o M 5 s V I Z 7 %J. m z 1 M m 1 o I WM. l a z n y Y 0. BROWN v I I 1, ,7 CLAY wursame ncanm Filed Nov. 7, 1930 4 sheets sneet 4 Patented May 9, 1933 UNITED STATES DAVIS BROWN, 01 IDS ANGELES, CALIFORNIA.

CLAY TZEHPEBING MACHINE Application filed November 7, 1980. Serial No. 494,177.

My invention has for its object to provide a tempering machine having a means for maintaining, under all conditions of speed of the machine, a constant predetermmed ratio between the plastic material to be tempered and the tempering liquid.

Another object of-my invention is to provide a-measuring wheel "for liquids which will conduct a specific amount of liquid to a material as the liquid is desired.

My invention also rovides an automatic shut-ofi for the machlne after the supply of the material to be tempered is exhausted or fails to enter the machine.

The invention may be contained in tempering machines that vary in their details and, to illustrate a practical application of the invention, I have selected a tempering machine containing the invention and various embodiments of my invention, and shall describe it hereinafter. The particular structure selected, as an example, is shown in the accompanying drawings.

Fig. l'i lustrates a perspective view of the tempering machine. Fig. 2 illustrates a side view of the tem ering machine. Fig. 3 illustrates a View of a side of themachineshowin the fluid pan and wheel in section. Fig. 4 i lustrates a cross sectional view 'of the machine. Fig. 5 illustrates a view of a longitudinal section of the machine.

In the working of plastics and the like, the best results are obtained, and the plastic will. work better, where there is mixed with it a certain volume of water. The required water content desirable has been determined by ex eriment with a view to the use to which the p astic is to be put. The required .contents have been reduced to tables or are well known in the art. The clay tempering machine illustrated in the drawings, is composed oftwo units which 0 rate to deliver a liquid, such as water, an a substantially d material, such as clay, at a predetermined vo ume ratio. The clay is received by a cylinder which has ockets, or cups, of equal size, distributed a out its periphery and the water is measured by another cylinder "which likewise has cups, or compartments, of equal size. Both cylinders operate on a common shaft to deliver to the mixin locality, under all variations of speed of t e machine, the

same constant rated volume of water and rated volume ofclay.

The tempering machine 1, shown for urposes of illustratiom may be supporte on a suitable frame work 2. The frame work 2 may be formed by legs 3 which are connected by cross braces 4 and to pieces 5. The frame work'may be formed 0 angle iron and 'oined together by suitable rivets 6 and angle races 7 to produce a supporting structure which will withstand vibration and prevent side pla of the machine 1.

s l lperimposed upon the top pieces 5 of the frame work 2, is a measuring chamber 8' for measuring and holding material to be tem-" pered, such as clay, and a tank 9 for storing tempering liquid, such as water. The chamber 8 may be formed by cast steel plates, such as the plates 10 and 11, which may be fitted between two side plates 13 and 14 and there held by rivets 15, leaving atop opening 19 and a bottom opening 24. The side plates 13 and 14 may be connected to the top pieces r 5 by bolts orrivets 12 and have extending parts34 which rovide an auxiliary supporting structure or the machine. The plates 10 and 11 are formed to have curved portions 16. The curved rtions 16 have a radius which is, substantially, the radius of a measuring cylinder 18 which is located and moves between the plates 10 and 11.

The cla as it moves byits own weight through t e chamber 8 is received by the measuring cylinder 18. The measuring cylinder is of an elongated drum shape havin open sections along its periphery who moves the clay in equal amounts about its axis to the opening 24 through which it falls. I

A pug-mill, or other mixing means, may be located under the opening 24 where the water msiy be thoroughly mixed with the clay.

. n the tempering machine illustrated, the measuring cylinder 18 is keyed to, and supported on, an axle 17 whichextends through openings 23 in the side walls 13 and 14. The axle 17 may be located in suitable bearing members 20. The measuring cylinder 18 is formed to have partitions 21 which extend 1 00 The partitions are spaced equi-distant from each other soas to form sections 22. To

more efficiently carry the material to be measured, the partitions 21 may have curved portions tangential to the radial line' to give the sections 22 a cup-sha e. terial to-be measured may be f to the measurin cylinder through, the top opening)19 of t e chamber. 8 from a hopper or in. The material will fill the sections 22 of the cylinder 18 by its own weight as each section is brought in alignment with the opening 19 of the chamber 8. The plate 10 will act to scrape off the excess material which may be deposited on each section, as the section moves past the plate 10, and the curved portion 16 will act to retain the material within the section-until the section rotates to the position, in alignment with the opening 24 of the ,chamber 8, where the material will The arm 45' is suppo fall by its own weight into a mixing machine or pug-mill. I v

The measuring cylinder 18 may be rotated within the chamber 8 b a motor 30. The motor may be locate in the frame work 2 and is connected by a belt 31 to a pulley 32 which is supported on its shaft 33. -The shaft 33 may be rotatably supported in brack- I 30 .fiets 35 which maybe locate on the extensions 34 of the plates 13 and 14. A pinion 36 is keyed to the shaft 33 and is so located as to mesh with a gear wheel 40. The gear wheel 40 is keyed to a shaft 41 which may be rotatably secured to the extensions 34 of the plates 13'and 14 by brackets 42. A'crank 43 may be connected to the shaft 41 which will transmit oscillatory motion to an arm which is pivotally secured to the crank 43 the pin and block 46. The crank 43 may be provided with an adjustable screw 44 to va theamplitude of movement of the arm 45 y moving the pin and block 46 relative to the axle 41. The arm'45 is givotallyconnected by a pin 48' to a pair of o 47 which are adapted to make contact wit a toothed wheel 50, one of the pair being shorter than the other dog of the pair, to insure contact between the rted' above the toothed wheel 50 by a pair of props 51 havin hubs 53. The ends of the props are pivota ly secured to the end of the arm 45 by the in 48. The hubs 53 of the props 51 are locate about the axle 17.

Thus; as the motor 30 moves the belt 31 and the pulley 32, the inion 36 will rotate the gear wheel .40. e rotation of the ar 'wheel 40 will be transmitted by, its sha 41 to the crank 43. The movement of the crank 43 causes the oscillatory movement of the arm 45. I The dogs 47 are moved by the'arm 45 over the toothed wheel 50 and then against the teeth of. the toothed wheel 50 to rotate the wheel 50 and its axle 17 upon The madogs and the. toothed wheelwhich themeasuring c linder 18 is likewise keyed. Variation in t e speed of deliver of the machine may be obta' ed by the a justment of the screw 41 wh ch operates to change the effective length of the crank 43,- there y varying the angular displacement about the common axis 0 the two measuring c linders 18 and 19 with each revolution of t e gear wheel 40.

The liquid 64 is delivered at the opening 24 b a pipe 65 having suitable openings to pr uce a distribution of the liquid along the longitudinal axis of the opening 24. The pipe 65 is connected by the pipes 66 and 67 to a box 68 for collecting liquid.

The box 68 is connected to a liquid control wheel 69 by an extension 70 of the hubof the liquid wheel 69. The liquid wheel 69 is drum-shaped having radial partitions 74 which extend longitudinally through the drum 69, dividing its interior into a plurality of sectoral chambers 71. Each section 71 has twoopenings, one opening 72 is located on the periphery of the liquid wheel, and the other openin 73 is located near the hub of the li uid w eel. The 0 ning 72 may be locate relatively close to t e point of jointure of the spokes 74 and the periphery. of the liquid wheel so as to permit a substantial filling of each section as the liquid wheel is moved through a liquid. The opening 73 is located at the hub of the liquid wheel so as to connect with the extension 70 of the hub of the liquid wheel. The extension 70 of the hub is inserted within an opening 75 ll extension 70 of the hub, and into the box 68 1' where it will be carried by the pipes 67, 66, and 65 to the mixing localit The wheel 69 is supported on, and keye to, the axle 17 so that as the axle is rotated, to cause rotation of the measurin cylinder 18 within the 1 chamber 8, there wi be a corresponding rotation of the liquid wheel 69 to cause the em tying of a definite number of sections 1 into the liquid box 68. It will be seen, therefore, thata constant ratio will be maintained 1 between the delivery of the materialto be tempered, with the delivery of the tempering li md to a mixing locality.

0 provide for liqpid which, by reason ofrapid operation of t the box 68 to such a height as to flow bac into a section 71 of the wheel 69 through the extension of the hub 70 and thereby disturb an already measured quantity of liquid, an

ron 76 may be provided and located on 1 t e interior of the'box 68. The apron 76. is cut to substantially cover the lower half of the opening 75 of the box 68. The apron 76 may be supported over the opening 75 by suitable bolts and may be dished to allow 1 e machine might fill u 1 the insertion of the extension 70 of. the hub by canvas bellows 62.which 'ma be secured in the opening 75. Thus-the agll'fll 76 will by suitable nuts and" washers e plate 60 prevent the liquid 64 from bac g up into is pivotally supported on an arm 63 which is the section 71 from the liquid box. In-order keyed to the shaft 57. It will be seen, thereto supply the liquid 64: to the liquid wheel, fore, when the chamber 8 isnot receiving 7 an open tank 9 is located so that the. liquid material to be measured, the weight 59 forces wheel 69 will pass into it so as to substan-. the plate 60 into the chamber 8 and, at the tially fill the sections 71 through the opensame time, forces the arm 56 to press against ings 72. buttons 55 to break the motor circuit. The

The tank 9 may be formed of sheet metal. motor will operate only when the weight and supported b suitable brackets 81 on the passing over the'plate 60 is sufficient to countop pieces 5 of t e frame work 2. The tank terbalance the pushing action of the weight 59.

surrounded by a suitable stufiing box 83 to said shaft, the measuring cylinder hav' has a-suitable drain pipe 82 which extends I claim:

through the bottom of the tank- 9 and is 1. In a tempering machine for plastic maadapted to telescopically fit within an auxterials,a chamber for receiving the plastic iliary drain pipe 84. The point of connechaving a delivery opening, a shaft, a measur tion between the pipes '82 and 84 may be ing cylinder located in the chamber on the a prevent leakage. The pipe 84 may be conplurality of open sections, atank for contamnected with a suitable reservoir 88 which may ing liquid, a second measuring cylinder havbe located in the frame work 2. It will be ing a plurality of closed sections, a plurality seen that the pipe. 82 may be moved up r of openings located on the periphery of the down Within the tank h r y p t g said second cylinder, the said second cylinder diflerent levels of fluid to be maintained withlo at d 911 th aid shaft so as to immerse said Q may be operated by the motor 30. 'The pump 4o of the spigot 93.

\The weight 59 is 'slidable in order to adjust ing the level of the liquid the volume of tank, ean for rotating the said shaft to plate 60 is located in the chamber 8 in an in the tank 9, as may be desired. By varyopenings of said second cylinder in the said go liquid taken into each chamber of the mea move said measuring cylinder to deliver reuring Wheel 69 may be Varied n eep g spective volumes of the plastic and the liquid with the required water content desirable at aid delivery opening of the chamber. in the mixed material. In order to facilitate 2, I a t i hi f l ti h the movement of the pipe 82, a yoke 86 y ing a measuring 0 amber, a switch, a move attached to the Op g of the P p able plate formin apart of a wall of the The yoke may be attached to a suitable screw h b r, a counter alancing weight for coun- 87 so as o operate Within a cross brace 89 On terbalancing the pressure of the material the to o e t A handle 94 y be within the chamber on the plate, and means P ed for the Operation Ofthe screw 87- connected to the counterbalancing weight for The n 9 may be supplied with liquid from operating the switch when the pressure on the the reservoir 88 by a suitable pump 90 which l t i du d,

3. In a tempering machine for dry plasticable materials, a pair of rotative members be n l as deslrelil having chambers, means for directing the dry t0 enterthe a y y plasticable material into the chambers of one of the rotative members, and means for directing'a tempering liquid into the chambers of the other rotative member,i'nea ns for reg- 11r ulating the proportionate volume of tempering liquid directed into-the chambers of said Swltch 54 y be connefited m the'cll'cult of second rotative member while rotating, the the The Swltch 6 have t machine having a commbn outlet for the plascohvehtlhnal P h t n 55 for P- etlhg ticable material and the tempering liquid. or breaking the c rcuit and may be located 011 4. In a tempering machine for plasticable the slde p arm 56 1S heated y 8/ material, a pair of rotative members having Shaft 57 so that 113 W make Contact t the chambers, means for directing the plasticable button breakmg the Q cllhult and material into the chambersof one of the rotamay be located on the side plate '14. The arm tive members, the machine having an outlet 56 1S located y h Shaft 57 so that It F for ejecting the plasticable-material, the make Contact t the button 55h)! a i g chambers of the second rotative member havh mot/01 e e m 58,h&V1I1 a ing openings on the periphery thereof for shdable ight 59 n 1 mov s downwar l receiving a tempering liquid into the chambers and openings near the axis of rotation for discharging the "tempering liquid into the outlet of the machine and means for varying" the quantity of tempering liquid entering the opening 61 formed in the plate 16. The edges chambers of the said second rotative member of the plate 60 are connected to the plate 16 while the said member is being rotated.

90 is connected by a pipe 91 to a valve 92. The valve 92 ma to allow the liqui In order to provide for automatically stopping the electric motor 30 when the material being fed to the measuring cylinder 18 is exhausted, or fails to enter the chamber 8, a

the switch tooperate under varying weights of material which will strike a plate 60. The

' for containing a tempering liqu'id,'the second of the rotative members being partially sub-- 5. In a tempering machine for plasticable material, a air of rotative members having measuring c ambers, means for directing the lasticable material into the measuring chamliers of one of the rotative members, an outlet for ejecting the plasticable material, a vat merged in the vat, a liquid collection box, means connecting theliquid collection box I with the outlet of the machine, the second named rotative member having peripheral openings for receiving the tempering liquid into the measuring chambers thereof and axially adjacent openings for delivering the tempering liquid into the liquid collection box and means for regulating the level of the temporing liquid in the vat in order to varytheproportionate volume of tempering liquid delivered by the second rotative member to the outlet of the machine while the machine is opcrating.

6. In a tempering machine for plasticable material, a pair of rotative measuring cylinders mounted on a common shaft, means for delivering the plasticable material to one of the said pair of measuring cylinders and a tempering liquid to the other of the said pair of measuring cylinders, a ratchet wheel keyed to the said common shaft, a drive shaft, a

crank mounted on the drive shaft,-a link adustably connected to the crank, means for rotating the said drive-shaft, a pawl pivotall v supported by the link and adapted to peri- I odically engage the ratchet wheel upon successive rotations of the crank, and means for varying the efi'ective length of the crank whereby the angular displacement of the said pair of rotative members may be varied to change the rate of deliverv of the plasticable material and tempering liquid to the outlet of the machine.

7 In a tempering machine forplasticable --material, a pair of rotative members having measuring chambers, means for directing the plasticable material into the measuring chambers of one of the rotative members, the ma chine having an outlet for delivering the plasticable material, the measuring chambers of the second rotative memberhaving openings on the periphery thereof for. receiving a tempering liquid, and openings near the axis ofrotation of the rotative member for discharging the tempering liquid to the outlet of the machine, and means for varying the volume of tempering liquid added to the plasticable material asit is delivered at the, outlet of the machine while the rotative members, are rotating, whereby. the consistency" of the delivered plastic may be maintained at a desired constancyregardless of the. moisture content of the plasticable material delivered to 'the measuring chambers of the first named rotative member.

of the second rotative member hav' 8. In a tempering machine for plasticable material, a air of rotatiremembers having measurin c ambers, means for directingthe plasticab e machine having an outlet for delivering the material into the measuring chambers of oneof the rotative members, theplasticable material, the measuring chambers plasticable material delivered to-the outlet.

of the machine, while the rotative members are being rotated.

9. In a tempering machine for plasticable material, a pair of rotative members hav' a plurality of measuring chambers an mounted on a common shaft, an electric motor, a switch connected to the motor, means connecting the motor and the common shaft for driving the shaft at various speeds,

openmeans for directing the plasticable material into the measuring chambers of one of the rotative members while in motion, means for opening the switch upon-the'failure of the supply of plasticable material, an outlet sticable material, a vat for containing a tem ring liquid, means for maintaining said liquid in the vat at any desired elevation, the

vat and artially submerged in the tem ring liqui said second rotative member av- Y ing openings on its periphery for receiving the tempering liquid mto its measuring chambers an openings near its axis of rotation for the discharge of said tempering liquid, a collection box .for receiving the measured opening for the delivery of the p a tempering liquid and means for delivering J it to the outlet ope of the-machine.

In witness whereof have hereunto signed my name-to this specification.

' DAVIS BROWN ,second rotative member located within the 1

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