US1866499A - Continuous automatic centrifugal machine - Google Patents

Description

- July 5, 1932. HERR 1,866,499

CONTINUOUS AUTOMATIC CENTRI IFUGAL MACHINE Filed June 4, 1923 12 Sh eets-Sheet 1 WITNESSES y 5, 1932- H. A. HERR I 1,866,499

' CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE Filed June 4, 1923 12 Sheets-Sheet 2 July 5, 1932. H. A. HERR CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE Filed June 4, 1923 12 Sheets- Sheet 3 mul Ill H. A. HERR CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE July 5, 1932.

July 5, 1932. H. A. HERR CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE Filed June 4, 1923 1 Sheets-Sheet s ZZZZ3 K/Z WITNESSES H. A. HERR CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE July 5, 1932.

Filed June 4, 1923 12 Sheets-Sheet 7 MN mm WITNESSES H. A. HERR wJuly 5, 1932.

CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE Filed June 4, 1925 12 Sheets-Sheet 8 H. A. HERR CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE July 5:, 1932.

Filed June 4, 1923 12 sheets-sh 'et 9 W/TNESSIS July 5, 1932. H. A. H ERR CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE I 12 Sheets-Sheet 10 Filed June 4, 1923 H gw oooooooooooooooooooocoo, ooooooooooooooo ooow o W/ TNL'SSES July 5, 1932. H.' A. HERR commuous AUTOMATIC cam-lumen momma July 5, 1932. H. A. HERF; 1,866,499

CONTINUOUS AUTOMATIC CENTRIFUGAL MACHINE Filed June 4, 1923 12 Sheets-Sheet 12 nvmvrox.

Patented July 5, 1932 UNITED STATES PATENT OFFICE 110mm A. HERB, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO AUTOMATIC CEN- TRIFUGAL COMPANY, A coRroRATIoNoF DELAWARE Application filed June 4, 1923. Serial No. 643,829.

My invention has reference to centrifugal machines-and. consists of features fully set forth in the following specification and the atf companying drawings forming part there- The object of my invention is" to provide an automatic centrifugal, reliable in action, fool proof in service and efficient in its work; needless to say the fundamental object is the saving of labor and economy of production.

In my Patents Nos. 1,246,267, 1,166,370, 1,286,626 and 1,212,638 I show an automatic centrifugal having two speeds. ratios shown in the said patents are not fixed and are, therefore, unreliable, particularly the slow speed. This is sometimes a very serious defect in service. My present invention overcomes all the troubles of this nature and makes a decided advance 'in the art, as

the slow speed rotation is by this invention made fixed, positive and reliable.

A second feature of my present invention is to have a specifically independent drivefor the slow speed basket rotation and to predetermine positively the slow speed and the speed ratios.

A third feature is to have a common mechanism to control the two speeds successively but alternately, so when'the high speed drive is in action the slow cannot be, and vice versa.

A fourth feature of my invention is a means to unlock the high speed driving mechanism vfrom the basket it drives and place this mechanism in a neutral position, which allows the momentum of thebasket, at this time, to be the entire driving force, and to arrest this momentum. A fifth feature of my invention is to put a brake mechanism into action to arrest the basket momen- 'tum as soon asthe high speed drive is disconnected from the basket.

A sixth feature of my invention is to connect the basket. with the slow speed drivingmechanism after the basket momentum is arrested sufiicient to bring the basket down to at or near the slow speed.

A seventhfeature of my invention is to automatically permit the positive speed of the basket,at any time to exceed the slow The speed mechanism which strain would brake the said mechanism) if. the momentum of the basket is not arrested to such degree that the basket rotation under momentum is not as slow as the fixed slow speed drive.

An eighth feature of my invention is a feeding mechanism permitting variation, and a means for permitting instant adjustment of feed as to volume and time.

A ninth feature is an improved washing and spraying mechanism for sugar service and quick adjustment for volume of-spray and time of spraying. v

A tenth feature of my invention is a cleaning mechanism permitting the basket \cleaning to take place at speed.

A further feature of my invention is a simplified means for raising the valve in the basket bottom prior to basket cleaning.

Other features of novelty will be set out hereinafter.

. In the drawings like parts will be referred to by marks or figures of a corresponding kind in the different views.

Fig. 1 is a front elevation of the complete machine to the top of the curb, and showing the water spray in position.

Fig. 2 is a plan of the lever which raises the basket bottom and a section of the basket shaft.

Fig. 3 is a' vertical section on the prime shaft and the brake, to compel a positive stop.

Fig. 4 a vertical section thru the machine.

Fig. 5 is a plan of a portion ofthe controller mechanism.

Fig. 6 is a plan of the machine on the line of theslow speed driving mechanism. Fig. 7 is a section thru the basket curb, showing the cleaner in position relative to the spreader carried by the basket shaft. I

Fig. 8 is a side elevation of the cleaner, showing deflectors. 4

Fig. 9 is a'vertical section thru the'supporting tube for the basket bottom. Fig. 10 is a planand diagram of the cleaner.

Fig. 11 isavertical section of the basket, side elevation of the feed trough and bottom of the mixing chamber. Fig. 12 is a section thru the pivot support of the feed gate. Fig.

'13 is a sectional view thru the noise arrester.

Fig. 14 shows the front elevation of the feed gate, its adjustability and operating mechanism. Fig. 15 shows the cam for operating the brake and its operating mechanism. Fig. 16 is a detail of the same cam.

Fig. 17 is a plan of the lever which operates the rod which carries the said brake cam.

Fig. 18 is a side view of the automatic controller mounted on its operating lead screw, its trip and reseating mechanism.

Fig. 19 is a plan of the'prime shaft with its novel clutch.

Fig. 20 is a section thru the lock of the automatic controller and in engagement with its operating lead screw.

Fig. 21 is a horizontal section thru the same, look disengaged.

Figs. 22 and 23 are front and rear views of the controller respectively.

Fig. 24 is a vertical section thru bearing chamber.

Fig. 25 is .a section thru the stabilizer. Fig. 26 a plan of same.

Fig. 27 is a section on line X-X of Fig. 24.

Figs. 28 and 29 are details of the union pin for the nut and lower flange of the universal oint.

1 Fig. 30 is a plan of the momentum arresting brake. Fig. 31 is aside view of the brake and section of the cap of the bearing chamber.

Fig. 32 is a side view of the cam, lever and link rod for lifting the basket bottom. Flg. 33 is a vertical section thru the spray. Fig. 34 is a front view.

Fig. 35 is a side View of trip cam. Flg. 36 is a plan of the spray valve actuating bar and .Fig. 37 a side view of the same.

Fig. 38 is an assembly of the valve with parts shown in Figs. 36 and 37. Fig. 39 is an assembly side view of the same.

Fig. 40 is a link detail.

Fig. 41 is a detail of the link bar which engages the clutch bars on the prime shaft. Fig. 42 is an assembly of the prime shaft and the clutch en aging and disengaging link bars, shown inFigs. 41 and 47.

Fig. 43 is a vertical section on the prime shaft on line X" of Fig. 42'.

Fig. 44 is a section on line X of Fig. 42.

Fig. 45 is a plan on the compound lever for raising the clutch link shown in Fig. 47.

Fig. 46 shows the position of the dog on the clutch link shown in Fig. 47 after the said link has been raised and is ready for the succeeding cycle. Fig. 47 is a plan of the water spray and a section of the basket shaft.

Fig. 48 is an enlarged view of the clutch which operates the basket shaft 84 at the slow speed.

Fig. '49 is an enlarged view of the clutch at high speed covering only the disc, ring and contracting lever.

Fig. 50 is an assembly detail of the rod 82 and its operating lever S.

Fig. 51 is a link detail, partly in section to show the outwardly contracted hole p4.

Fig. 52 is a link detail and Fig. 53 is a part assembly section on line PX of Figs. 48 and 4 AA are the standards for the support of the mechanism of the machine. There are usually four of these standards, although there are other ways that the mechanism could be supported. The equivalent for these standards could be suspended from the usual channels which carry the motors. The object of these standards, or any equivalent mechanism, is to support the mechanism and the basket so that the basket is in the center of the curb. In practice it is designed to insert the mechanism, as a mechanical unit, between the curb and the motor support, so it can be applied to machines already installed, and thus convert manual operated machines into automatic ones.

In the construction shown in Fig. 1 A, A support the main bed plate B. This bed plate carries the basket shaft bearing and the main mechanism details of which will be described. The arms B carry a second bed plate B2, which latter supports the brake wheel and its co-acting members. ports the driving mechanism for the slow basket speed. The bed plate B carries the bearing chamber 1-, shown best in Fig. 24. This chamber consists of a cylindrical casting with its upper end contracted in diameter and its lower end carrying an inner flange 3. y

This frame supports a cap 4 by a series of screws 5, which supports directly the entire bearing elements of the machine and, therefore, the basket B" Thearc 6, determined by radial lines 1" and 7', forms the concave bearing seat for the bearing proper 8. The cap 4 is made of cast iron. The bearing phospher bronze 9 is an intermediate bearing resting in 8 and inset in the nut 10. Bearing 9 should be made of steel or close grained iron. The nut 10 is made of cast iron and is threaded to the shaft with lock screws (not shown) to prevent movement independent of shaft rotation. Of course I do not limit myself to the shaft shown in the drawings. Any type of self aligning bearing will answer my requirements, and bearings of this type are necessary in centrifugal machines. To insure oil being retained in the bearing chamber I insert a tube 11 in the cap 4 in an oil tight manner, shown only in Fig. 24, in section. I also provide a spreader 12, held by the boss B4 of the flange 25, and impinged by the nut 10, in a fixed position. This spreader rotates with the shaft and any oil that may pass over the top of the tube 11 passes down the inner side of the said tube into the basin formed by the shape ofthe collector 13. This collector carries a cap 14 which prevents oil therein splashing over the inner ring 13, forming This frame also supradial center.

- series of holes 71. h.

17. The lines 1' and 1 indicate tentative oscillation of the basket with point 19 as the The lower flange 16' of the universal joint, shown in Fig. 27 carries a. These holes receive the pins 20 of which there are as many as holes. The pins are tapered to readily seek their respective holes in assembly. The said pins are threaded into the nut 10 and coincidepositionally with theholes in the flange 16'. This flange 16' is the lower flange of the universal joint of which the upper is16". and the center is 16. 16" is bolted to the flange 21 of the shaft 22 which latter is bolted to the brake wheel 165 thru a flange 23,

Fig. 4. In practice I find it best to weld the flange 21 to'the shaft 22 and to key flange 23 to-the said shaft, the. latter carrying a suitable boss for such construction.

The'nut supporting basket shaft '27, thru intermediate and coupling shaft 24, Fig.

24, carries an end extension 24, which is in.

serted in the hole 24, Fig. 27, in a snug fit, and this hole retains the" coupling shaft B4 in alignment with the center of the joint 19. The flange 25, carried'bythe lower. end of the union shaft B4, carries and has bolted to it the basket shaft flange 25. This shaft supportsthe basket thru the arms 28, Fig. 7.

vThere are four or more of these arms all cast integral with the central boss 29, Fig. 7.

' The basket shell, or ring 13 is cylindrical and is welded to the ring 30, the latter being.

riveted to the flange on the ring 32, as shown; in Fig. 7. The ring 30 is a plate disc-with its circumference exactly concentric with the shaft center. I

It is evident that when I wish to assemble the nut- 10 and thereby connect the basket 13" to'the universal joint 16, the pins 20 in the-said nut 10 readily enter the holes in the bottom'flange 16' and the bottom flange aforesaid readily enters the recessed part of the nut which forms its seat. It is also evident that-when I wish to disconnect the basket from the said nut I remove the cap screws 5, the bearing 4, bearing 8, intermediate bearing 9 and then nut 10 with its pins can be readily-withdrawn and the joint 16 and shaft 22 remain in position and intact. This construction facilitates repairs and accessibility to these parts. A detail description of the joint is not necessary, as it is of standard design. f

' Stabilizing the basket Centrifugal baskets, at the time of loading and at other times, have a violent disturbance of their center of gravity and this produces lurches of oscillationwhich may be danger ous. To avoid this and-toincrease'the eneral efficiency I produce and providea sta lhzer.

This stabilizer facilitates establishing the 7 center of gravity of the mass of material under treatment. It consists of a central nieand 36 are carried in the space formed by the outer wall of the inner ring and the inner tallic bearing 33, Fig. 25, which fits the basket wall of the outer ring aforesaid. The recess 40 holds the-said rings in position. Dotted line 40" represents the normal position of.the inner ring when the machine is not in action and line 40 the position of extreme oscillation. If there is a disturbance of the center of gravity the rings 35 and 36.will quickly restore it, as is evident. The outer ring 34 is rigidly supported by a series of rods 41, connected to their support 42, which latter'are bolted to the top of the curb 44 by bolts 43, as shown in Fig. 25 and in the assembled View, Fig. 25. These rods prevent the ring 34 from :dropping into the basket and at the same time they hold the retainers in place and receive the thrust of the lurching of the basket.

A top plate 37 is bolted. to the inner ring 33 l 100 and rests on the top of the outer ring 34.

Now, inasmuch as the outer ring 34 is rigid and cannot vary its central position, by virtue of the rods 41 and the cap 37, which is provided with enlarged holes 45, the said j'cap can move in any direction in a horizonvtal plane, in unison with 'the'oscillation of the shaft 27, which it surrounds and within the limits of the said shaft oscillation as limited by the rubber tubes 35 and 36'. 'Needless to say that the force occasioned by the speed of the basket is absorbed by the rubber rings 35 and 36 and 'thru them transmitted to the curb 44.

, I do not limit myself to this specific form 7 Washing the .s'ugm in a sugar machine Fig. 33 shows thesprayer I employ to waslr the sugar. It consists of a hollow chamber 45 having a series of holes very small in diameter. The cap 46, which carries the holes should be curvalinear so the water as sprayed can reach the entire-basket wall andthe sugar thereon impacted. Anadj ustable shutter 47,

'with proper gasket, is provided to regulate the valve 49 which is controlled by the automatic mechanism of the machine. 50 is the intake from the supply pipe to the water valve 49. This valve need not be special and the quick acting lever gate valve of commerce is well suited for this work: such a valve is shown at 51, Fig. 38. The valve operating lever 52 is pivoted at 53 to the bed, B Figs. 38 and 33, or any other suitable support. The link 54 carries a spring 55 and a spring compression adjuster 56, a collar 54', nut 54". Now as the link pulls in the direction 54' the valve lever 51*, is operated thereby and the valve 49 is opened and asthe link is moved in the direction of the arrow 63" the valve is closed. The lever 57, in this" movement, moves radially from 60 to 61 and the lever 52 moves from the position indicated by the solid drawing in Fig. 38 to the dotted line 62, indicating the oscillation of the valve lever 52. This valve-opening movement is accomplished by the action of the spring 63. This spring is fixed to the movable bar 58 at one end, being held by the projection thereon 58., and at the other end the said s ring is fixed to the rigid bar 58". Now as e bar 58 moves in the direction of the arrow 58 the link 54 moves in the direction of the arrow 54 and the valve 51 is opened. The water will then flow thru the conductor 48 to the spraying chamber 45-and on the sugar on the basket wall. The pin 67 on the lever 66 holds the bar 58 in the valve-closing position shown in- Figs. 38 and 39, but the moment that this pin is removed from engagement with the said bar the spring 63 will snap the bar 58 from i to z", which opens the valve. This lever66 is oscillated from the said pin 67 by the automatic controller C and specially by the dog 64 carried thereby. See Figs. 18, 19, 20 and 21, also 22. This dog 64, it will be noted, is a pendant and pivoted one. Moving forward it maintains a vertical position, but moving rearward it will swing over the upward extending arm of the bell-crank lever 66. 59 is a stop on the bar 58" to limit and predetermine the movement of the bar 58. The spring 63 pulls the bar 58 back against this stop to open the valve 51. In closing the valve the dog 64 on the controller 0 contacts with the dog 64 and the latter is moved in the direction of the arrow 63' and the link 54, on the bell crank lever 57 is moved in the direction of the arrow 63", which movement closed the said valve. It will be noted that the dog 64, Fig. 37 is fixed to the adjustable support therefor 64 and the holes in 64" provide for exact adjustment for valve closing.

The bar 58" is rigidly bolted to the bed plate B, as shown. I can adjust the volume of waterflow and the time of the flow by varying the position of the dog 64' on its supporting bar 64" and vary the position of the stop 59, if I desire. 66" are two lateral guide and retaining plates for the dog carrier 64. On theinner plate the dog 66 is carried and on the outer the cam 35. This cam can be adjusted so as to shorten or lengthen the travel of the dog 64, before it reaches its tripping position at the line As before explained the holes H, H, H are for adjusting the dog holder 64. They correspond in pitch to the holes J, J in the cam plate 35', Fig. 35. The thumb nuts T, Figs. 36 and 37 are designed for quick, manual adjustment. The spring 66, Fig. 38, snapsthe dog 66 in the position shown in Fig. 39 when the said dog is released by the dog 64 of the controller G. This dog 64 of the controller moves forward on line a, Figs. 37 and 39 and the dog 64, pivotally held on its adjustable support 64, normally slides on the top of the cam plate 35 until the dog 64 strikes the position indicated by the line 7 which on further movement, as f, the dog 64 will slide down the inclined face of the said cam plateto horizontal line a. This will release the engagement of the dog 64, carried by the controller C, as explained, from dog 64', and the dog can travel further, if desired, and if adjustments call for it. The radial line 65 shows oscillation of the bell crank lever 66 before release from pin 67.

Line'CL, Fig. 47, indicates the inner circumference of the curb ring, unto which ring the spray holder is pivoted at 48". R indicates the radius of the open curb top. In Fig. 47 I show a planof the sprayer as mounted on the top of the curb of the'machine. 105 This consists of a holder 48', having a series of adjusting holes 48 and a clamping pivot pin engageable in any of the said holes as a locking means to hold the spray in any adjusted position. The pin passing thru the 1 sprayer body looks it to the top of the curb. The radial and pivotal movement possible for the sprayer, in adjustment, is shown by lines Y and Y, Fig. 1 and lines Y0 and YC" in Fig. 33. I can, therefore, swingthe sprayer 45 vertically and horizontally and cover every part of the sugar on the basket wall and vary the volume and pressure of flow to any practical need.

Slow speed wwcham'sm Fig. 6 shows a plan of the slow speed drive, indicated in Figs. 1 and 4. 71 and 72 are bearings for shaft 70'. These bearings can be integral parts of the secondary bed plate B2, as shown. They can also be bolted thereto. The sleeve 7 O carries sprocket wheels 73 and 74. 74 is the drive sprocket for the shaft 70' and 73 is the drive sprocket for the prime shaft 74'. The sprocket wheel 74 is 139 75 is a aw clutch driving member and 75 is its driven member, 0 is a collar holding jaw 75 in place on thesleeve 70. See Fig. 6.

The sleeve 70, therefore carries the collar e, clutch jaw 75 and sprocket wheels 7 3 and 74 beyond the bearing 71. Sleeve 70 isin continual rotation at a fixed speed.. The jaw 75 of the clutch is in continuous rotation at the same speed and it is keyed to the sleeve. The sleeve 70 is not keyed to the shaft 70' but rotates freely thereon. J aw- 7 5' is keyed to the shaft 70 by key 70'. This jaw is an integral part of the sleeve which carries the spring 76. This spring holds jaws 7 5 and 75 in continual engagement while there is no force to drive the shaft 7 0 other than the clutch jaw 75, and the speed of 75 is the speed of 7 5', if such force did-exist. Now,

it will be seen, that the sprocket 73, sleeve 7 0' and jaw 75 are all normally operatively connected and operate at the same time. It will also be seen that sprocket 7 4, shaft 7 0 and jaw 75' are also connected and rotate at the same time. These members are all in continuous rotation and operate at the same time.

They are operated by an independent driving motor or means which I do not show in the drawings, not being necessar Now to recapitulate: 75 is the driver or 7 5' and 7 5' operates shaft thru key 7 0 of the jaw member 75. Now if the jaw ,inember 7 5' moves faster rotatively than itsdriver member it will not rotate 75, but slip over and pass it. The spring 7 fr vwillcontrol the snapping past and the reciprocal movement '2 disc become frictionally engaged and area friction clutch. When the disc and the rin are so engaged they have the same spec 84 is the motor shaft which drives the centrifugal basket. The basket motor drives nothing else but the basket thru this shaft 84. The sleeve 79 is keyed to the motor shaft (Fig. 1) and, therefore, it rotates the same speed as the motor: gear 78 may also rotate at the same speed as the motor but only when the clutch connected with the gear 78 is so engaged. At all other times the gear 78 rotates idly on the sleeve and is operated only by the pinion 77 and by the means set out.

S is a clutch spool, Figs. 1 and 5 and it is reciprocatable on the sleeve '7 9, or on the shaft 84, if for any reason I did not wish to extend the sleeve .thru the said s 001.

This spool is operated by the rock sha 89 and lever 88 thereon, and thru link '87 and clevis lever 86. The only function of this spool is to lock the friction ring 81 to the disc 80.

While I show the sleeve 79 on the shaft 84, I wish it known that I could'di'spense with this sleeve. If used, the key 85 would have to pass thru the sleeve into the disc 80 so thesaid disc is at all times locked to the. shaft 1 line 0 which movement will frict-ionally engage the ring 81 with the disc 80 and lock the disk and ring to the shaft 84. The link p which 'is provided with a tapered hole' pinto'which pin 83 enters, and the oscillation of the lever S from V to V, Fig. 49, will move the end 0' of the friction ring to line 0*, Fig. 29, which will lock the friction ring 81 to the disc 80 and directly to the basket shaft 84. The link p" is held in position on.

the rod 82 and it reciprocates on the said rod by virtue of the oblong hole wi'thwhich it is.

provided. The pin 1) is either threaded into or pinned to the body of the link 32* and the nut p on this pin holds it taut against the projection O of the ring 80 This pin 12 is free enough in the hole cf the extension O of the ring 80 to permit of a slight oscilla-- tion. When the arm S is in the position shown in Fig. 48 the ring and disc 80 and 81 respectively are separated and the basket is at high speed, when the arm S is in the position shown in Fig. 49 the speed of the basket is slow and and the cleaner is in actionthru the associated mechanism.

The rock shaft 89 iscontrolled by the controller C, presently to be explained and by cam 90 on the shaft 91. It is evident that when the clutch jaws 75 and 7 5 are engaged and operated by the driving sprocket 74, the gear 78 is rotating under the influence of the gear 77, and the disc of the clutch 8O is disengaged from its co-acting sleeve. See Figs. 1, 4 and 6. I can use any type of clutch on the motor shaft. I show a standard type that is well suited for the work. I

have used a magnetic clutch with much success. When the motor for high speed is disconnected from the basket shaft and the basket is running from momentum only and alone it may happen that the speed of the basket is greater than that .given it by the shaft 70,'at normal slow speed, thru gears 77 and 78. In this case the jaw 7 5 of the clutch would rotate faster than the shaft 7 0, on which it is carried. The inclined face 6' of the jaw of the clutch 7 5' will, in this case, pass over 0 of the clutch 75, but not rotate e", and the spring 76 would keep the jaws in continual engagement until the momentum of the basket was sufficiently arrested so that the basket'has a speed as slow as that given it by the shaft 70',tat the normal slow s eed. L.

The object of the mechanism just described is to prevent accident and to save the mechanism against smash in case the predetermined slow speed of the basket is not down to the proper rotation when the lever 86, thru the means described, has connected up the disc 80 with the ring 81 frictionally. I will now describe the mechanism that controls the rock shaft 89 and The positive control of the slow speed tain and limited time. At the slow speed the.

basket will be connected up with the slowspeed driving mechanism, at which time the basket will be cleaned of the separated solids hanging on its inner wall. The basket during the operation of cleaning, or unloading,

must not be operated by momentum, as it is too unreliable, and a fixed predetermined speed is the requirement for a practical machine. It may sometimes occur that the basket will almost stop, or entirely so, for a moment before the slow speed mechanism is connected up, but this is not material and will not in any manner interfere with the picking up of the speed to the predetermined slow.

In Fig. 18 Ishow a side view of the cycle controller C. The shaft 7 4 is the prime shaft of the machine. In Fig. 18 this shaft is shown as divested of all associated members. This shaft is in continual rotation, being driven by the sprocket wheel 7 3 which it carries, and this wheel is driven by the sprocket 73 of the shaft carrying sleeve 70. 92 is pinion on the shaft 7 4 and 93 is a spur gear driven by this-pinion. 95 is lead screw which carries the automatic mechanical controller C. This lead screw is in continual rotation.

96 is a dog lock carried by the controller and its function is to lock the controller to the lead screw. 98 is a stop trip for this lock. In Fig. 21 I show this dog look as out of locking engagement with the dog 100. In'Figs. 20 and 23 I show it in locking engagement with the said dog. This dog lock consists of a cam shaped head d, a throat d and a thrust end d"-, into which the end of the throat is threaded, thus making it adjustable. Now as the lead screw 95 rotates, the controller C is carried in the direction of the arrow 6 Fig. 18, until the dog lock 96 and d' engage the end of the thrust rod 98, carried by the standard S1. l/Vhile this movement is on the position of the dog lock is as shown in Fi 20, where the head of the dog lock 1s over the dog 100. This holds the said dog engaged with the lead screw 95. On further movement, as the pin 98 is fixed against movement, the dog lock will be forced backagainst the spring at and away from the vertical path of the dog 100. The spring ST will then force the dog 100 out of the teeth of the lead screw and against the pin 97 which arrests the movement. See Figs. 18, 19 and 23 The controller C is now disengaged from the lead screw and it is free to move rearward in the direction of the arrow C2, Fig. 18, and this movement is controlled and continued by the weight 104 on the chain 103 fixed to the said controller and .pulling it rearward until the dog 100'strikes the cam 102, when the arm of the said dog enga es with and slides on the said cam from line I? to K, Fig. 18. Now as the lead screw 95is in continuous rotation the said dog will immediately engage in the annular channels of the lead screw, whereupon the spring d will snap the dog head 03 over the dog 10 and the dog 1s now again locked to the said lead screw, and so remains until the cycle is completed and, at which time, it again becomes unlocked in the manner described. The controller C is carried forward, to recapitulate, in the direction of the arrow B by the lead screw and rearward by the weight 104 on the chain 103,

Figs. 1 and 19, once in each cycle of the machine, it is the primary control for all the automatic features of the machine, which I will now describe functionally.

In Figs. 5 and 18 radial lines are projected from the center of the rock shaft 89. Line F indicates high speed for motor and basket, N indicates a neutral position, or that the basket is running on momentum alone and S indicates the slow speed, or that the slow speed motor alone is driving the basket and that the high speed motor is dead. 105, Figs.

1, 4 and 18 is a lever on the rock shaft 89. This is the actuating lever therefor. This is the actuating lever and shown best in Fig. 18. The thrust rod 99 is pivoted to this lever. In its oscillation from F to N this lever is controlled by the controller C thru the thrust pin 97 thereon engaging thrust pin 99 of the rock shaft 89, which latter it oscillates from F to N, or from high speed to neutral position. It does this at the endof each cycle and just prior to the unlocking of the controller fromthe lead screw as follows: as the neutral position N of thelever 105 is reached the parts are so adjusted that the dog lock 96, thru and by its head d", engages the thrust -1 pin 9% which is stationary in the standard,

it will be remembered, and moves it to a degree sufiicient to force the end from the position shown in Fig. 20 to that shown in Fig. 21, or from Y to X and immediately the spring ST, Figs. 20 and 23, will snap the dog 100 out of the annular groove of the lead screw to the position shown in Fig. 21, or from line 12 to line 13, Fig. 23, after which the chain 103 thru weight 104 pulls the controller G in the direction of the arrow C2 until the dog 100 strikes the cam 102 at K and reengages the lever 100 with the lead screw, and a succeeding cycle is commenced. In Figs. 4 and 5 I show a link 106A connected with a rack 107 and'lever 107on the rock shaft 89. This lever is on the same radial plane as the lever 105. The rack'107 has teeth removed, as

shown in Fig. 5 and when these teeth, as shown in the figure, are disengaged from the pinion 108A, of the controller 109 the high speedmotor is dead. In Fig. 5 the radial lines F, N and S indicate the same rotative. values and functions as in Figs. 1, 4 and 18, so that when the rack is at S the slow speed drive is operating the basket. This is accomplished by the lever 88, thru link 87 and lever 86 forcing the clutch spool S down, and thru lever S oscillating pin 83 in shaft 82 from line P to P. Link pin P", in this movement, pulls the separated ends thru their radially projecting arms 0 and 0" towards each other and causing arm S1 to ride on the high part of the spool S in which position the clutch is locked, and so the disc 80, which is rotating with the sleeve 79 becomes frictionally locked with the latter and the high speed motor while dead, is now rotated by the slow speed drive, merely because they are connected with a common transmission for the basket, but have individual drives to this transmission. At this time, as is evident, all the work is being done by the slow speed drive. I do not limit myself for basket drive at either high or slow speed. It may be belt, water, steam. I have now described how the controller C' becomes locked and unlocked from the operating lead screw 95 and how it the said prime shaft, so the shaft is free to rotate while the sleeve is stationary. 110 is a brake, best shown in Figs. 1, 3 and 19. The

function of this brake is to arrest momentum and quickly stop the sleeve and the worm 108 and clutch jaw 109 when the jaw 109 is re-- leased from. jaw 113. The engagement of the clutch jaw 113 with the jaw 109 is accomplished as follows: the jaw 113 oscillates on its pivot pin 19" of the sleeve 114. A groove 116 on the said sleeve holds the said jaw 113 within fixedglimits, lateral springs 117 and 118 permit the dog to oscillate in either direction from a longitudinal line thru the pin 11, forming the pivot for the jaw 113. The sleeve 114 carries an annular groove 115. This sleeve is keyed to the shaft 7 4' see Figs.

19 and 44. The pins 119 of the sleeve move clevis 129. The said clevis moves slowly,

which they could not do if moved by the clevis as a lever. I therefore give these jaws a quick longitudinal movement as follows: Fig. 42 shows a link 134 for disengaging clutch pin 113 thru the movement of the supporting sleeve 114. The clevis is pivoted at 127 to a support therefor 128 which is carried by the bed plate B. 135' is a lever pivoted at 131 to the standard S2 and 132 is a link connecting lever 135' with. the clevi-s. The dog 120 slides on pins 122 on the link bar 134, a slotthru the dog permitting this reciprocal movement of the dog. 135 is a link carrying pin 124, a spring 126 pulls this latter link.

in the direction of the arrow A A, Fig. 42. Normally a slot, Fig. 41, only permits this link to slide on pin 136. This pin is threaded into the clevis 129. The pin .123

on the link 135 is adjustable thereon. The

controller 0 is shown in Fig. 19 in its asseinbled position with respect to the links just described and the prime shaft. This concontroller contacts with the pin 123 as the controller moves forward. This pin is on the link 135 and at this contact the link will also move.

Now it will be seen that the clevis,'Fig. 42, has an inclined face towards the pivotal center thereof. Thepurpose of this inclination is to avoid nice adjustment,

so, 'as the link 135 is moved forward the p n 124 moves away from the radial limits of the cam face 129, and, when so moved the spring 139 on the prime shaft, will snap the clutch jaws 113 and 109 quickly together. 9 and g in Fig. 6 and lines T and T- in Fig. 42 show the movement of the pin 124 before it becomes disengaged froin the cam face 129 of the clevis. The movement of the clevis will be from T to X or X to T' depending on how much the clevis was moved previously. The worm wheel 140 rotates when the clutch aws 109 and 113 are engaged, Fig. 42. The worm wheel140 makes one complete revolution in each machine cycle. This wheel carries two trip pins 141 and 142. Pin 141 is the pin whichBperates the lever link 134 by engaging the dog 120, or a movement equal to the movement indicated a to (1 Fig. 42, at which conclusion the wheel 140 will stop. During this time the cam face of the clevis 129 will have moved away from the path of the pin 124 and the said pin will engagement.

be snapped under the face 138 of the clevis by the force of the spring 126 and hold the clevis in the position shown in Fig. 42 until the lug 137 of the controller C again moves the link 134 forward, as described. The end of the standard Sl'has a guide slot 143A,

Fig. 19, to guide and retain the link 135 in a fixed position, and the spring 126 has a thumb nut 145 for adjusting tension. The spring rod 146A passes thru the standard. S2. It will beunderstood that the passing of the pin 124 from the bottom face 'of 138 of the clevis can never occur before the dog 120 is raised from pin 141 on the worm wheel 140. The reason that this is so is because the worm wheel 140 is locked to a fixed position when the dog 120 is locked against the pin 141, then the link 134, lever 135' and link-132 hold the clevis 129 in a position to clutch dis- All the parts: wheel 140. dog 120, worm 108, link 134 which carried dog 120 and link 132 which holds clevis will be are disengaged and the parts are free until the movement of the controller C on its lead screw thru lug 137 on the said controller. on its forward movement, strikes the pin 123 on the link 135 and moves the pin 124 from under the lower face 138 of the clevis 129 when the clutch jaws 9 and 13 will be engaged by the spring 139 and the worm 108 will be thus locked to the prime shaft and the worm wheel 140 in the succeeding cycle. So the pin 124 is always under the clevis 129 when the clutch jaws 13 and 9 are disengaged and the said pin is always disengaged from the said clevis when the worm 108 1s in action. The sliding movement, or slack, of the dog 120 is to snap the dog over'the pin 141 bythe spring 121 when the lever 144 raises the link 134 sufficient to dlsengage the dog 120 from the pin 141. After the dog is snapped over on the top of the pin 141 it remains there until the worm wheel 140 is again rotated in the succeeding machine cycle.

The springs 117 and 118, on jaw 113 of the clutch sleeve 114, permit this jaw to swing to the right or the left when the jaws are engaging and this insures a positive engage.- ment.

Assuming that the members 109 and 113 are not in engagement with each other, the basket is connected to the high speed motor and the controller is moving in the direction of the arrow 6 In the course of its travels in this direction member 97 of controller 0 connects with the thrust rod 99 shifting lever 105 from F to N-(or fast speed position or neutral position). This causes lever 147 to raise link 134 so that the dog 120 clears the pin 141 on the worm wheel 140. Simultaneously with this movement lug 137 on controller C contacts with the lug 123 on link 135 and shifts the same in the direction of the arrow 6 This causes the pin 124 to move beyond the under surface 138 of the clevis 129 and the spring 139 then moves the sleeve 114 forward so that the clutch member 113 engages clutch member 109. The prime shaft 74 then transmits power thru the sleeve 107" by means of worm 108 to the worm wheel 140 which rotates in a clockwise direction regarding Fig. 42. Since dog 120 has been carried above pin 141, as previously pointed out, by means of lever 147 raising link 134 this pin 141 passes beneath the dog 120, as shown in Fig. 46. By this time the controller C has returned in the direction of the arrow C due to the contact of the dog lock d with member 98, and-lug 137 of the controller Chas been removed from contact with'the lug 123, and link 135 moves back in the direction of the arrow C under the, influ:

ence of spring 126 until pin 124 contacts with the upper curved surface of the clevis 129.

As the worm wheel 140 continues to rotate the brake mechanism is applied and the apparatus is shifted to slow speed position by means of the cam wheel 90 as clearly explained in a later portion of this specification. Now, as the worm wheel 140 continues to rotate, the pin 142 contacts with the lug 146 and thru link 145 and lever 144 (Fig. 42) until it is at position F. and the mechanism is in high speed position. This causes lever 147 to lower link134 and the dog 120 is again in the path of pin 141 and when pin 141 contacts with dog 120 it moves lever 134 forwardly and throws clutch member 113 out of engagement with member 109, simultaneously with this clevis 129 is oscillated in a counter-clockwise direction on pivot 127 and pin 12,4on lever 135 rides on the upper curved surface thereof until it comes to the end when it will

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