US898171A - Mixing-machine. - Google Patents

Description

PATENTED SEPT.. 8, 1908.

C. E. BATHRICK. MIXING MACHINE. kAPPLIMTIONFILED AUG.14, 1905.

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APPLICATION FILED AUG-.14, 1905.

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PATENTED SEPT. 8, 1908.

G. E. BATIIRIGK. MIXING MACHINE. APPLICATION FILED AUG.14, 1905.

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. PATENIED SEPI. 8 0. E. BATHRICII. MIXING MACHINE.

APPLICATION FILED AUG. 14, 1905.

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` No. 898,171, PATENTED sBPT.8,19o8.

.0. E. BATHRICK. MIXING MACHINE.

APPLICATION FILED AUG.14, 1905.

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UNIE SIrAiEe 'EAEESNE OEEIOE.

CHARLES E. BATERICK, oF CHICAGO, ILLINOIS, ASSIGNOETO FREDERICK C. AUSTIN, or f v ,CHICAGO, ILLINOIS.

Eine-MACHINE.

-at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Mixing-Machines, of which the following is a specification.

My invention relates to machines adapted for mixing Concrete, mortar, and the like, and involving a mixing receptacle arranged to revolve u on a tilting support; means for continuous y rotating the mixing receptacle, and means for tilting the support for the mixing peceltacle so as to tilt the latter into position ischarging a mixed-'up batch, and then 'reversely tilt such support so as'to again bring the mixing receptacle into position for charging and mixing. f

In al mixing machine characterized by my invention, power for tilting the mixing receptacle-support is taken from continuouslyo erating means employed for rotating t e mixing receptacle, the connection between' means andthe tilting device 1 such operating being established and interrupted by a device which is manually ioperated to establish connection, and,automatically operated tev interrupt such connection at the moment the mixing receptacle has been tilted into position for-discharge, and also at the moment the mixing receptacle in tiltin back from its discharge position has reache a properposition for charging.

In the accompanying drawings: Figure 1, is a side elevationV ofa mixing machine ein-- bodymg the principles omy invention, the. eing in position for remixing receptacle ceiving and mixii'ig together thematerials employed for forming mortar, concrete or the like. Fig. 2,.is a section taken through they machine of Fig. 1 on a vertical, central plane 'y coincident with the axis about which the mixing receptacle revolves. Fig. 3, is a view similar to Fig. 1, but showing the mix- ,ing receptacle and its tilting sumpporting frame in position to permit the scharge of a mixed-up batch from the mixing receptacle.

Fig. 4, is an elevation of the mixin machine as seen from the left in Fig. 1. Iig. 5, is a side elevation with the lsupport B slightly tilted.

f The mixing receptacle A is revolu-bly su ported u on a rectangular tilting frame As 'a' pre erred arrangement, ythe mixing receptacle is supported upon the tilting frame Specification of Letters Patent. y

Application lied August 11i, 1905. Serial No. 274,075.

Patented sept. e, 190s.'

by suitably arranged anti-friction rolls `and to such end, it is provided with annular bearings 1 andv 2, (Fig. 2), and the tilting frame is provided with anti-friction rolls upon which the/, bearings 1 and 2 are supported, as illusti'ated for example, in Fig. 4, in which the annular bearing v1 and a pair of supportin trted in dotted lines, it being understoodl that a like vari-an ement of anti-friction rolls is provided for the remaining annular bearanti-friction rolls 3- therefor areilluslgl'he mixing receptacle illustrated is provided with a discharge opening 4 (Fig. 2), and an oppositely arranged charging opening, both of -sai`d openings being coincident with the axis about which the mixing receptacle revolves. During the operation of mixing and discharging successive batches of material,it is customary to revolve the mixing receptacle continuously as in preceding mixing machines, and to such end the mixing receptacle is provided with a bevel ring-gear C, which issecured u )on the mixing receptacle and arranged etween the charging and discharge openings.

The bevel-gear C is engaged b a pinion D (Fi 4), fixed upon a rotary shait E, which said s iaft is driven from any suitable engine or motorin any desired or suitable way.

. The teeth of the gear C are on one side of the ring-plate as shown, and the opposite plane side of the ring- )late is engaged by an idler roll 5, supported of the tilting frame Band preferably a like by a bearing 6 on one side idler roll is su )ported upon the opposite side' of the tilting ame and likewise arranged to -engage the plane face 7 of the riii T gear plate as indicated b dotted lines 'in Fig. 2.

F denotes a ase-.frame upon which standards or upright side pieces G are secured. 'Ilhe upper portionsof these side pieces G are provided with suitable bearings upon which the 'frame PB is hung, as best illustratedin Fig. 4, wherein the frame B is provided with hangers 8 extending upwardly from opposite sides of said frame and hung upon st uds ,or pivots 9 on the standards orirame portions i, it beingobserved that the shaft E shown in Fig. 4 extends through one oi these pivots or bearing-portions. 9, which is of course suitl abl bored for such purposes.

driving mechanism for thus revolving the mixing receptacle is in operation, the tilting frame B can be tilted from the position shown in Fig. 1 to the position shown in Fig. 3, and then tilted back into the position shown in Fig. 1. As a means for thus tilting the frame B, the shaft E is provided with a bevel-gear 10, which is suitably 'fixed or keyed thereon, and arranged to engage a lower bevel-gear 11, which is secured upon the upper end of a vertically arranged rotary counter-shaft H. j A worm-sleeve I is loosely 'Iitted'upon the lower portion of the countershait Il and arranged with its threaded portion 12 in engagement with a rotary gearwheel 13. The worin-sleeve I also forms one member of a, clutch by which power can be taken from the counter-shaft H, the other member 13a of said clutch being splined to slide u on and rotate with the counter-shaft II. Vliiien, therefore, the clutch member 13 is moved downward into position to engage the up )er end of the worm-sleeve I, the latter wili revolve with the counter-shaft H and in turn serve to rotate the gear-wheel 13. T he gear-wheel 13 is arranged within a casing 14, which is partially broken away in Fig. 1, so as to show portions of the worm portion 12 and the gear 13 in elevation. The gear 13 is iixed upon an axle 15 having one end portion projecting outwardly through the casing 14 and provided with a stop device 16, which as shown, is practically a cam-disk consisting of a circular plate having oppositely arranged peripheral notches or low portions 17 and 18. The cam is rotated from-a suitable source.

Thus the upper clutch member 13"L is en- 1 gaged by a clutch shifter K, which has a pivotal connection with said clutch member, it being understood that the clutch member 13a has, for example, a loose ring provided with pivots which project through slots in o posite sides of an annular portion of the c utch shifter K, and that as this is a common arrangement in clutches, it is not considcred necessary' to illustrate details of this portion of the machine. It will be observed, however, that one of the pins on the clutch member is shown projecting through one of the slots in the clutch shifter.

The clutch shifter K is pivoted at K on one of thestandards G and is provided with a pendent swinging arm 19, which is. in the nature of a pivoted catch or latch device. This arm 19 is hung at its upper end and swings about pivot K for the lever K, and is provided at its outer free end with an antiiriction roll 20, adapted to rit in one and the other'of the recesses 17 and 18 of disk 16, in alternation. The bar or lever which forms the clutch shifter K, is also provided with a weight 21, arranged between the arm or catch 19 and the next adjacent end of the said bar. A spring KZ is arranged between lugs 19 and 19b respectively on the lever K' and the arm 19, andas a referred arrangement a rod 19c extends t rough the spring and lugs and has nuts on its end portions which project beyond the lugs, atleast one of such lugs having a hole for the bolt of such size that the arm 19 can swing independently of the bar K. When the parts are in the position shown in Fig. 1, the roll 20 rests in notch-17 of late 16, the weighted end portion of the c utch shifter K being depressed and kept down by reason of the weight 21, and the clutch member 13 being thereby maintained in a raised position and free from the `clutch member I, which also forms a worm-sleeve.

As shown in Fig. 1, the axis of rotation of the mixing receptacle is horizontal when the mixing receptacle is in position to receive materials from an. elevated hopper L, and also to mix the said materials. At this j uncture, the driving shaft E and `the countershaft I-I are understood to be revolving, while on the other hand, the gear 13 and the wormsleeve I are stationary. When it is desired to tilt the frame or su port for the mixing re- 90 ceptacle so as to tilt t e latter to an extent to permit it to discharge its contents, an attendant will raise the weighted end portion ofthe clutch shifter K, or what is the same thing, depress the opposite end of the clutch shifter to an extent to bring the clutch member 13a into engagement with the combined Wormsleeve and clutch `member I. This action causes the combined clutch member and worm-sleeve yI to be driven by counter-shaft H, and at the same time the rise of the weighted end of the clutch shifter K will raise the latch 19 out of notch 17 in theI camdisk and thereby permit said cam-disk 16 to revolve in the direction indicated by the ar-l 105 row in Figs. 1 and 3. The worm-sleeve I being thus operated by the counter-shaft H, will turn the Gear 13 to the right and the lower end of the arm or catch 19, will ride upon the high peripheral portion of the cam- 110 fdisk 16 until the latter has made a half revolution, and at such juncture the lower end of the arm or catch 19 will drop into the notch 18, so as to lock said disk and permit the weight 21 to operate the clutch shifter in a 115 way to raise the clutch member 13a. land thereby disconnect the'combincd clutch and worm-sleeve I from the driving power. During this half revolution of the cani-disk or plate 16, the frame B -is tilted in a direction and to an extent to bring the mixing receptacle into the discharging position shown in Fig. 3, it being observed that the notches 17 and 18 of the cam disk are timed with reference to suoli extent of movement on the part of the supporting frame B. As a means for thus tilting the supporting frame B, the axle 15 of the gear 13,'is provided with a crankarm 22, shown in dotted lines in Figs. 1 and 3. This crank-arm has its outer end jointed to a link 23 shown inkdotted lines in Fig. 1, and in full and in dotted lines in Fig. 3. One end of the link 23 is jointed to the outer end of one of the arms 24 of a bell-crank, which is arranged upon a rockshaft 25,. the outer end of the remaining arm 26 of said bellcrank being jointed to the lower end of a link 27, (Fi s. 2 and 3) which has its upper end pivotal y connected with the tiltingfraine B, as at 28. j

When the several members are in the positionshown in Fig. 1, the crank-arm 22 projects from the axle to the right as indi-4 cated and the bell-crank and links will also be in substantiall the relative position indicated in dotted ines. When the cam-disk 16 makes a half revolution 'so as to transfer the lower end of latch 19 from notch 17 to notch 18, the crank-arm 22 will swing downwardly and then forwardly toward the clutch sleeve I, and durin such movement the link or connecting ro 23'.will be actuated by the crank-arm so as, to in turn operate thebell-crank and cause the latter to tilt f lthe frame B, by reason of its connection therewith, substantially as illustrated in Fig. 3. lt is understood, however, that in Fig. 3, the attendant desiring to tilt the frame B back so as to again bring the mixing receptacle into position for char ing and mixing, has again manipulated the c utch Shifter K, so as to connect the worm-sleeve I with the power and lift the lower end of latch 19 from notch 18 in the cam-disk 16, and that in said figure the cam-disk 1 6 and gear 13, are understood Yto be moving in the direction of the arrow,

and thaty as such movement continues, the crank-arm 22 will swing upwardly and back to its first position illustrated in dotted lines in Fig. 1, and that in so doing it will operate the bell-crank in a direction reverse to the preceding o eration thereof andl thereby cause the lin 7 to tilt the frame B back to the position shown in Fig. 1.

lt will, therefore, be seen that while the clutch shifter K is manually operated to start the tilting mechanism, the latter is automatically arrested at each of its two desired movements, that is to say-'it is automatically arrestedv when the mixing 'ieccp taclc reaches .a Iposition for dum )ing or discharging, and a so when the mixing receptacle has moved back into position for charging and mixing.

From the foregoing it will beseen that the notches or low cam portions 17 and 18, are timed with reference to the two extremes of the permitted vibi'atory movement of the mixingr receptacle support, and that when the latter reaches either extreme, the tilting power is automatically disconnected fi'om it, and it is also automatically and temporarily locked in position. ln Fig. 1, the tilting means is shown locked by latch 19 engaging .f the notch or low cam portion 1 7, the clutch member 13a being raised freel of the clutch member I, so as to disconnect the operating power, and the weighted end of the Aclutch shifter K being depressed to permit latch 19.

to thus engage in the notch 17, it being ob` served that the-permitted extent of expansionon the part of spring K2 is not suiiicient of itself to depress the lower end of latch 19 into the notch 17. In Fig. 3, the latch 19 isunderstood to have just left notch -18, by reason of the weighted end of the lclutch or shifter K having been raised to cause clutch member 13a to engage clutch member I, and

a consequent movement of cam-plate 16 in the direction of the arrow. When the as in Fig. 3, the spring K2 will be compressed between lu s on the shifter or lever K and the arm or atch 19. It oftentimes happens,

' however, that it is desirable to dump only a small portion of the mixed-up batch, as for example, in filling a wheelbarrow. In order i to secure such result, an'attendant can arrest .l

the dumping tilt of the mixing receptacle at any point between the two extremes hereinbefore mentioned. In Fig. 5, the cam-plate or disk 16 has turned from the position shown in Fi 1 to an extent to permit the frame B to ti t sufficiently* to depress the discharge port of the mixing receptacle, the tilt, however, being at this point less than that shown in Fig. 3. When the parts for example are as in Fi 5, the attendant can depress the weighte end of the lever or shifter K, and this can be easily done by raising the oppe-1 site'end of such lever. This action disconnects clutch member 13a from clutch member I, and thereby stops the tilting action, it being observed that the lower end of latch 19 will still bear on the high portion of cam 16, and that this rise of the unweighted end and de ression of the weighted end of lever K wi l further com ress spring K2 which being free to thus yiel permits such action on the part of lever K.

The hopper L is shown supported upon a `frame portion M, which rises from the stationar base frame F, F. The hopper is also provi( ed at its lower end with `a discharge neck or chute portion 29, having the edge of its discharge orifice in `an inclined lane as in- .dicated by line 30, inFig. 2. This discharge tween -them the lower discharge portion 29 of the hopper when said con'ibined valve and chute N is swung back as in Fig. 3. The combined valve and chiite N is attached to one arin or member 34 of a two arm toggle,

the remaining arin 35 of said toggle having iio so weighted end of the clutch shifter K is raised j 'or chute, or mouth-piece 45 on the frame B,

r" its outer end pivoted to an arm 36 (Fig. 2) on the bell-crank?. The |bell-crank is supported by a bracket 37 upon the hopper, and

position for charging as in Figs. 1 and 2, .portions of the sides 31 and bottom 32 of the gate or valve N project within the chute on the tiltin frame and the toggle 34 and 35, and the bel -crank P will be in or substantially in the relative positions shown in said two figures. When the frame is tilted for the purpose of bringing the mixing receptacle into ythe dischargeposition `shown in Fig. 3, the upward movement of the receiving spout will tilt the hopper gate N upwardly and away from the mixing receptacle and cause 1t to assume the position shown in Fi 3, wherein it will be seen that the back orgbottom .32 of the gate N temporarily lcloses against. and covers the discharge opening of the hopper, the said gate being temporarily locked in such position bythe toggle arms 34 and 35, which beconie'folded substantially as illustrated.

After the material has been discharged-- and the mixing receptacle has been brought back into the position shown in Figs. 1 and 2, an attendant can unlock the gate N by operating the bell-crank P, and if convenient, h e can operate said bell-crank by iirst drawing upwardly the cord or wire 39 and then drawing upwardly the cord or wire 38. When, therefore, the mixing receptacle is .tilted for purposes of discharge, the hopper will be temporarily closed by the gate N, and when the mixing receptacle is in receiving position, the gate N can be swung forwaii and downwardly so as to form a continuation of the discharge passage in the lower discharge portion 29 of the hopper, it

- being seen that theback or bottom portion 32 of said gate bridges a space between the i hopper and the mouth-piece 45,'and that as the said gate N is trough-shaped, the spilling of line materials on their wav `from the hopper to the mouth-piece 45, will be avoided.'y

Q indicates `a pipe secured upon (the mouth-piece 45, and 46A (Fig. 2), indicates a passage extending from pipe Q into the niixing receptacle, its discharge end being at a point over the inner end of the mouth-piece 45. 'The pipe Q is screwed into the upper end o f the channel 46, and in practice, a

seaivi flexible hose pipe is attached to the pipe Q, which is in the nature of a rigid nozzle.\

From the foregoing, it will be seen that the member 16 is in the nature of a rotary cam havingstops or low portions which permit a part or member of the clutch device to drop or movein a direction to causethe shifting Vclutch lmember to automatically shift in a direction to disconnect the tilting device and the rotary cam from the driving power. On the other hand, when vthe clutch shifter is moved by an attendant in a direction to connect the driving power with the tilting device and rotary cam, the said part or member of the clutch shifter previously engaging the low part of the cam will be drawn away from such low part and be permitted to engage and vride upon the high portion of the cam, so as to'keep the power on until it is in register with the next low part of the rotary cam. Also that the dclutch shifting means can be operated so as to disconnect the tilting power from the frame when the latter is at any desired angle.

When the mixing receptacle is tilted from the position shown in Figs. 1 vand ,2, toward the position shown in either Fig. 3 or Fig. 5, the chute or mouth-piece 45 which is supported upon the tilting frame B, will act upony the tilting chute 34 and swing the same back into the position shown in Fig. 3, and in order to prevent the hinged chute N which in Fig. 3 forms a bottom for the hopper, from accidentally swinging forward when the frame B is in the position shown in Fig. 3, or Fig. 5, the said frame is provided with a guard R which maintains the combined chute and bottom N in the position shown in Fig. 3 until the frame B carrying the mixing receptacle has been tiltedback into substantially the position shown in Figs. 1 and 2. It is observed that tlie niouth-piece 45 which is fixed on .the frame B, projects within the mixing receptacle, which latter revolves independently of' the said month-piece, the latter being stationary upon the tilting frame.

By my arrangement, the transverse portion 32 ol the combined' chiite and valve or gate, forms a 'chute which leads from the hopper spout 2E), and which is practically continued by an inclined bottoni portion of the mouth-piece 45 when the mixing receptacle is in receiving position, as in Fig. 2, and the combined valve or gate and chute N has been swung forward into the position shown in said iigiire. lt will also be seen that the discharge s )out 2S) of the hop )er has its lower o en end formed transversely on an inclined p ane, which inclines vupwardly and foi'- wardly toward the mixing rece )tacle so that when the combined valve and chute 3l is swung back from its position shown in Fig. 2, its transverse portion 32 which may roperly be terni-ed its bottoni ortion, is close against the inclined) end 30 of the hoprought the mixing receptacle,

-stantially at 4revolving per spout. rlhis arrangement also permits each side 31 of the combined valve and chute to be made as a segment pivoted at or subthe apex of the angle, as illustrated in Fi s. 2 and 8, whereby when the combined va ve and chute is swung forward, it can readily project'into the up er end portion of the mouthiece 45, and 'dfiis arrangement as shown in ig. 2, permits the upper end of the mouth-piece 45 to be in juxtaposition to the lower end of the hopper spout 29 when the mixing rece tacle is in receiving position. When, therefore, these parts 29 and 45 are thus brought together or into close juxtaposition, a practically continuous passage is established between the hop er and whereby leakage of sand and Jfine material passing from the ho er to the mixing rece tacle is avoided. It will alsobe observed t at the opposite segmental sides 31, 31, of the combined valve and chute N, are arranged against opposite sides of the hopper spout 29, wherebyT when the combined chute and valve N is in position to conduct material from the hopper into the mixing receptacle, its straight upper edges being outside the planes of two sides of the chute, will not form obstructions tending to cause collection of material which is being dischar ed from the hopper.

It wil also be seen that when the combined valve and chute N is in the position shown in Fig. 3, it temporarily closes the outlet opening of the hopper spout 29, first, because its bottom 32 is against the lower end 30 of the hopper spout 29 thereby closing th'e discharge orifice of the hopper spout, and furthermore, when the `combined chute and valve N is in this position, its sides 31 embrace the ho per s out and by reason of their union with t e sai bottom 32, -a close joint is secured. It will also be seen that the device R. is alsoa cam for acting against the combinedvalve and chute N. l

What I claim as my invention is:

1'; In a machine, a rotary mixing receptacle; a tilting frame u on which the mixing receptacle is revolubliy mounted; a mouth-piece secured upon the tilting frame andarranged for directing materials into the mixing rece tacle; a hopper; and a valve for opening an closing the hopper, said valve being arranged to direct material into the mouth-piece when it is open, and being arranged to be swung back and closed by the mouthiece when the frame is tilted, and a guard for the purpose set forth.

2. In a mixin machine, a rotary mixing receptacle provi ed with an annular gear; a tilting frame upon which the mixing receptacle is mounted to revolve; a rotary main driving shaft gear-connected with the annular gear onthe mixing receptacle as means for the latter; a rotary counter-shaft gear-connected with said main driving shaft;

rigid with the worm- Ivibratory bell-crank a clutch having one of its members provided with a worm, and adapted for connecting and disconnecting said member with and from the counter-shaft; a rotary worm-wheel engaged by said worm; a crank rigid with the worm-wheel and connected with one arm of a vibratory bell-crankby a link or pitman; a link connecting the other arm of the bellcrank with the mixing receptacle s up, ort as a means for tilting the latter; a camisk 16 heel and having peripheral notches 17 and 18 a vibratory clutch shifter K pivoted to the shifting clutch member and weighted at one side of such clutch member; and a locking arm 19 pivoted to the clutch shifter and having at one end an idler roll adapted to engage in one or the other ofnotches 17 and 18 of the disk 16, and to ride upon the periphery of said diskwhen not in engagement in the said notches.

8. In a mixing machine, a rotary mixing receptacle; a tilting support upon which the mixing receptacle is mounted to revolve; a arranged below the mixing receptacle support; a link or pitman connecting one arm of the bell-crank with one end portion of the tilting mixing receptacle support; a rotary crank; power transmitting connection between said crank and the remaining arm of the'bell-crank, and means for revolving the crank.

4. In a mixing machine, a rotary mixing receptacle; a tilting support for the rotary mixing receptacle; a shaft rotatable in one direction and means for rotating the recep- 'V tacle therefrom; a toggle comprising a vibratory arm 26 and a link 27 connecting saidrarm with the tilting mixing receptacle support, and a crank operated from said shaft for vibrating the arm \26. v p 5. In a mixing machine, a rotary mixing receptacle; a tilting support' for the rotary mixing receptacle; mechanism for tiltin the support for the rotary mixingreceptace; a rotary cam device for automatically limiting the extent to which the mixing receptacle support can be tilted in each direction; means for driving said cam device, and means for shifting the connection between the rotary cam device and thel tilting device and the driving means therefor. l

6. In a mixin machine, a rotary mixing receptacle provi ed with a ring-gear; a tilting frame upon which the mixing receptacle is supported to revolve; a power driven shaft gear'- connected with the ring-gear on the mixing receptacle; a counter-shaft gear-connected with the said power driven shaft; a device for tilting the mixing receptacle support; a clutch device for connecting the counter-shaft with the device for tilting the mixing receptacle support; and a rotary cam device for automatically disconnecting the tilting device from the counter-shaft, and a member of the clutch device for engaging the high nrtion of thecam device and maintaining t e clutch members in temporary relative engagement.

7. ln a mixing machine, a rotary mixing receptacle; a tilting frame upon which the mixing receptacle is supported to revolve; a mouth-piece supported upon the tilting frame and registering With an opening in the mixing receptacle; a suitably supported hopper; a hinged gate N for opening and closing the lower end of the hopper, said gate being arranged to project Within the said mouthpiece when the mixing rece tacle is in charging position, and a toggle evice for locking the said gate in position to close the discharge orifice of the hopper.

8. ln a mixing machine, a rotary mixing receptacle provided with a ring-gear; a power driven shaft gear-connected with said ring-gear; a tilting support upon which the mixing receptacle is arranged to revolve;

idler rolls 5 engaging the plane back face of the ring-gear; an upright counter-shaft gearconnected with said driving shaft; a rotary gear-wheel rigid with a cam device and means for connecting and disconnecting said gear- Wheel with and from the counter-shaft; said rotary cam device being provided with high and low portions; a vibratory clutch shifter for operating the clutch; an arm 19 engaging the cam, and a Weight on the clutch shifter for causing said arm to engage in the low portions of the cam.

9. ln a'inixing machine, a rotary mixing receptacle; a tilting support upon which the mixing receptacle is arranged to revolve; mechanism for tilting said mixing receptacle v support and means for limitingthe extent of movement on the part of said tilting device and comprising a rotary cam having high and low portions.

10. ln a mixing machine, a rotary mixing receptacle; a tilting support upon which the mixing receptacle is mounted; a rotary cam; means adapted for operating the rotary cam and comprising a clutch; a clutch shifter for operating the clutch a latch engaged b the,

' cam; and a spring arranged to hold the atch i receptacle;

111 engagement with the cam with a yielding spring pressure.

ln a mixing machine, a rotary mixing receptacle; a tilting suplport upon which the rotary mixing receptac e is mounted ;v a rotary power driven shaft; a rotary cam; means for connecting and disonnecting said cani with and from said shaft; a lever for shifting one of the clutch members; a latch hung to swing about the pivotal axis for the lever, and arranged to engage the cam; and means for tilting the mixing receptacle support connecting the latter with the rotary cam.

12. Ina mixing machine, a rotary mlm' e .a tilting support upon which the rotary mixing receptacle is mounted; a roscent-fi tary cam 16; a clutcli'shifting lever K;Ia

.means vfor operating the cam, and a clutch for controlling such operating means.

13, Thel combination with the rotatable receptacle and tilting support therefor, of a driving shaft and vconnections for rotating said receptacle, a rotatable cam and means for drivin the same, devices operable from said cam or tilting the support, and means for automatically disconnecting the cam from its driving means when the receptacle is in its terminal positions.

14. The combination with the rotatable receptacle and tilting support therefor, of a driving shaft and connections for rotating said receptacle, a rotatable cam for driving the same, devices operable from said cam for tilting the support, and means for automatically disconnecting the cam from its driving means when the receptaclel is in its terminai positions, said means includand means;

ing yielding connections to permit the posiv tive disconnection of the cam and driving means with the receptacle in any position.

1/5. ln a mmng machine, the combination of a rotary mixing receptacle revolubly mounted upon a tilting support and having an inlet opening coincident with its axis of rotation; a mouth-piece for said inlet mounted upon the tilting su port, the .mixing receptaclebeing revolub e independently of its moutl'iiece; a hopper supported independently o' the mixing receptacle and its tilting support and having a discharge opening; vand a Swingin' combined valve and chute for closing the ischarge orifice of the hopper, and in alternation therewith for opening the discharge orifice of the hop er and for discharging material from the, opper into the mouth-piece, the said combine valve and chute being a single member` constructed with a bottom which forms a valve for closing the discharge orifice of the hopper and in alternation therewith a chute bottom ada ted for bridging the space between the dpischarge orifice of the hopper and the passage within the mouth-piece on the tilting support. 16. In a mixing machine, the combination of a hopper having a discharge spout formed with its discharge opening on an inclined plane; a rotary mixing receptacle mounted upon a tilting support and aving an inlet its coincident with its axis of rotation; 'a mouthl piece for said inlet mounted iipon the tilting support, the mixing receptacle being revoluble independently of its mouthieee, and a combined chute and valve for dpirectly closing the discharge oriiice Aof the hopper spout and in alternation therewith for bridgin the space between the discharge outlet o the hopperand the mouth-piece and also adapted for projeeting'into the-latter, the said combined va1veand',ehute being a single member constructed with sides for embrac` ing oppositev sides of the hopper spout and with an intervening bottom which abuts e against the inclined end of the hopper spout and directly closes the discharge oriiice at vsaid end of the hopper spout when the oom- CHARLES E. BATHRICK. v- Witnesses:

JAMES C. BENNET, THEO. BUDD.

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