US2981490A

US2981490A - Centrifugal impacting apparatus and support therefor

Info

Publication number: US2981490A
Application number: US705563A
Authority: US
Inventors: Kurt H Conley
Original assignee: Entoleter Inc
Current assignee: Entoleter Inc
Priority date: 1957-12-27
Filing date: 1957-12-27
Publication date: 1961-04-25
Anticipated expiration: 1978-04-25
Also published as: FR1222562A

Description

2,981,490 CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 1957 April 25, 1961 K. H. CONLEY 6 Sheets-Sheet 1 INVENTOR. Kari- ]f. Genie} ATTORNEYS April 1961 K. H. CONLEY 2,981,490

CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 1957 6 Sheets-Sheet 2 INVENTOR K fi Con a 3 BY u] L} AT TORN'EYS April 1961 K. H. CONLEY 2,981,490

CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 1957 6 Sheets-Sheet 4 INVENTOR Kurt H. C'onle BY AT T ORNEYS ,April 25, 1961 H. CONLEY CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR 6 Sheets-Sheet 5 m T N w m Filed Dec. 27, 1957 April 25, 1961 K. H. CONLEY' 2,981,490

CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 1957 6 Sheets-Sheet 6 INVENTOR Ii/5 TORNEYS CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Kurt H. Conley, Hamden, Conn., assignor, by mesne assiguments, to Entoleter, Inc., a corporation of Delaware Filed Dec. 27, 1957, Ser. No. 705,563

7 Claims. (Cl. 241-275) This invention relates to centrifugal impacting apparatus comprising a motor-driven rotor for flinging continuously moving material outwardly by centrifugal force at very high speed and, more particularly, to the supporting structure for the motor and rotor mechanism.

Machines for centrifugally impacting a flowing product have been used for a variety of purposes such as infestation destruction, milling of grain and the reduction of various types of materials in the chemical, metallurgical, and other industries. Such machines are prin-' cipally limited in use by their ability to impart suflicient impact to the material to achieve desired results. Accordingly, there has been a constant demand in many industries for a machine capable of impacting a flowing material with centrifugal forces far in excess of those which existing machines are able to produce. Obviously the larger the diameter of the rotor and the greater the speed at which it is driven, the greater the centrifugal forces to be achieved with resultant violence of impact. However, as the size of the motor and rotor are increased, many problems arise, such as a proper rotary support for the rotor and suitable bearing structure, the mounting of the motor so that it will not only be supported reliably but may be easily installed and removed for repair; all these parts should be firmly held in position by a frame structure which is not unduly costly and is easy to manufacture. The present invention is concerned with a supporting structure for an unusually large centrifugal rotor capable of imparting velocities to a flowing product well in excess of 30,000 feet per minute and driven by motors having a power rating of 150 horsepower or more.

Accordingly, the principal object of this invention is to provide apparatus for supporting a large centrifugal impacting rotor and an unusually large electric motor together with suitable driving connections therebetween. More particularly, a further object of this invention is to provide apparatus of the above-character having a supporting frame structure which is light and economical in construction and yet sufficiently sturdy to support a very heavy motor, a large centrifugal rotor and related driving equipment. A further object of this invention is to provide apparatus of the above character wherein the motor may be easily installed or removed by an overhead crane Or other suitable lifting equipment such as is found in the average manufacturing plant. Another object of this invention is to provide apparatus of the above character with suitable mechanism for conveniently adjusting the driving connection between motor and rotor. An important object of this invention is to provide apparatus of the above character wherein the supporting frame is comparatively light and hence inexpensive in proportion to the size of the motor and rotor; hence there is provided at reasonable cost a machine capable of imparting much greater impacting forces than have heretofore been possible. A further object of this invention is to provide a machine of the above character wherein many of its components are. either standard. materials hired States Patent or parts readily available in the open market or modifications of such parts thereby further reducing cost of manufacture. A final object of the above invention is to provide a machine of the above character which will operate reliably for long periods of time with little required maintenance and down time for repair or other reasons. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the features of construction, combinations of elements and arrangements of parts which will be exemplified in the construction hereinafter set forth and the scope of the invention will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:

Figure 1 is a front elevation of the machine as as sembled and ready for operation;

Figure 2 is a top plan view of the machine shown in Figure 1,

Figure 3 is an enlarged fragmentary vertical section of the drive shaft and bearing support of the rotor and taken along the line 3-3 of Figure 2,

Figure 4 is an enlarged fragmentary vertical section of the rotor and associated parts and generally taken along the line 4-4 of Figure 3,

Figure 5 is a perspective view of the supporting frame structure for the motor and rotor assembly with those parts removed,

Figure 6 is a fragmentary vertical section on an enlarged scale of a portion of the structure shown in Fig 1 ure 3 and having to do with an air seal,

Figure 7 is a fragmentary enlarged vertical section taken along the line 7-7 of Figure 5 and Figure 2 showing details of the rolling support for the driving motor and Figure 8 is a fragmentary enlarged vertical section taken along the line 88 of Figure 5 and Figure 2 showing details of the support structure for the impacting apparatus.

In general, the machine comprises supporting posts 10 having horizontal

hollow beams

12 and 14 connected thereto as will be apparent from the consideration of Figures 1, 2 and 5. The motor is supported by angle supports 16 and 18 resting on

beams

12 and 14 by rolls 20 (Figures 1 and 5) as will be more fully described hereinafter. The motor mounting generally indicated at 22 is suspended from

supports

16 and 18 and the motor generally indicated at 24 is suitably bolted thereto with its drive shaft 26 (Figure 1) extending vertically therefrom. A pair of spaced girders generally indicated at 28 and 30 (Figures 2 and 5) are connected to

beams

12 and 14 and traverse the space therebetween to support the rotary impacting apparatus as can be seen in Figures 1 and 2. More particularly, the impacting apparatus includes a cover plate generally indicated at 32 bolted to

beams

12 and 14 and the impacting rotor 34 rotatably suspended beneath cover plate 32 which is in turn connected to a drive shaft generally indicated at 36 (Figures 1 and 3) rotatably supported in bearings 38 and 40 (Figure 3).

As is readily apparent in Figure l, shafts 26 and 36 are provided with pulley members 42 and 44 connected by belting generally indicated at 46. A turnbuckle 48 is connected to motor mounting 22 (Figure l) and the bearing casing generally indicated at 50 of the rotor 3 generally indicated at 54. As best seen in Figure 4,

the rotor includes a bottom plate generally indicated at 56 with a central hub portion 58 fastened to shaft 36. An upper ring 60 is connected to plate 56 by way of a plurality of circumferentially-spaced impactors 6 2. l Aplurality of target impactors 64 depend from cover plate 32 being concentrically disposed with and spaced from rotor 34. Cover plate 32 has product inlet openings 66:: and 66b (Figure 4) and an annular ring 68 depends therefrom adjacent the inner edge of rotor ring 60. Product inlet chutes 72 and 74 diverge upwardly and fit into openings 72a and 74a (Figures 2 and 4) of top plate 75.

- In this machine rotor 34 is designed to be not only unusually large but to be driven at excessive speeds. For example, in the existing commercial machine of this. type, the rotor is 40 inches in diameter. It is to be understood, however, that similar results well within the scope of this invention may be achieved with larger 7 or smaller rotors.- The construction to be described is also capable of driving this rotor at unusually high speeds. For example, the 40 inch rotor may be driven at 3500 rpm. by a 125 horsepower motor giving it a capacity in excess of 250,000 pounds of processed material per hour. It will be apparent that the motor 24 drives rotor 34 via pulleys 42 and 44 and belting 46 while the fiowing product is directed down upon the hub portion 58 of rotor 34 through chutes 72 and 74. As the individual particles hit the bottom plate 56 of the rotor, they shoot outwardly under the impetus of centrifugal force and achieve very high speeds as they are hit by the impactor 62 and shoot outwardly and tangentially to hit target impactors 64 and the violence of this impacting action is very great indeed. After this the product falls by gravity downwardly'through casing 54 and away from the machine through suitable ducting (not shown). The problems attendant to such high speed operation involving very large capacities and high impact values of individual particles are concerned principally with the supporting structure which must support a motor of high horsepower and great weight together with the rotor which must be heavy and rugged to withstand the punishment naturally from the machine operation. These parts must be mounted in such manner as to be very stable and free from any sub stantial vibrating effect which might result in rapid deterioration. This problem of support could be solved by the use of very heavy and sturdy structural supporting parts, but in so doing the cost of the resulting equipment increased to such an extent that the necessary capital investment for such machinery might not be worth the possible highly desirable results which may be achieved by these high impact forces. Accordingly, the principal object of this invention is to provide supportiugstructure for a motor and rotor mechanism which can achieve these desirable high velocity impact results at a cost within the reach of the average processing manufacturer.

Turning now to the details of the machine embodying this invention, the posts 10 include foot plates 10A which may be suitably bolted or otherwise secured to the flooring of the plant where the machine is to operate. As best seen in Figures 1 and 5, the

hollow beams

12 and 14 are welded or otherwise secured to shell plates 76, bolted to posts 10 by bolts 78. Thus beams 12 and 14 form the basic and only support for the driving and driven mechanism, i.e., the motor and rotor and associated structure which are supported on posts 10. These beams and associated structure to be described must support a very heavy motor driving a rotor at excessive speeds which necessarily involves compensation for numerous heavy stresses on the beams. Accordingly, it is necessary to employ unusual mechanical expedients to strengthen the relatively light materials used in the beamsto'accomplish these purposes economically. r 7

Accordingly; the

girders

28 and 30 not only act to support the entire rotor and associated assembly, but also in a large measure strengthen the supporting and carrying function of the

beams

12 and 14. Thus these

girders

28 and 30 comprise top straps and 82 which traverse and rest on beams 12 and 14 (Figures 2, 5 and 8) and which are welded or otherwise connected to angle beams 84 and 86 (Figures 1, 5 and 8). More particularly, the

straps

80 and 82 are welded to upper

horizontal portions

84a and 86a (Figures 5 and 8) of

beams

84 and 86 and the vertical portions 84b and 86b are welded or otherwise connected to the inner sides 12a and 14a of

beams

12 and 14. Finally, the bottom or lower horizontal portions 840 and 86c are also welded or otherwise secured to the inner sides 12a and 14a of

beams

12 and 14 with

bottom straps

87 and 89 connected thereto. Consequently,

girders

28 and 30 form a very firm reinforcement for all stresses of the rotor mechanism mounted thereon not only as imparted through the high speed of the rotor but also through the driving connection of the heavy and powerful motor 24 (Figure 1). Furthermore, the

hollow beams

12 and 14, which are rigidly connected to legs 10, further serve to strengthen the entire supporting structure against stresses and vibrating forces.

Referring to Figures 1 and 2, horizontal holders 88 extend inwardly from the inner sides 12a and 14a of

beams

12 and 14 and the cover plate 32 (Figures 1 and 4) is adjustably supported by bolt and nut structures generally indicated at 90 of any suitable and well known design so that in assembly the horizontal location of the cover plate and'associated structure may be readjusted with ease. In operation, there are twisting and shearing forces applied to plate 32 and structures 90 are designed to transmit these forces into the main frame where they are absorbed. Accordingly, from a consideration of Figures 1, 2 and 4, it will be seen that the cover plate is supported by the holders 88 on the

beams

12 and 14 which are reinforced by the

girders

28 and 30 and the cover plate has depending therefrom ring 52, casing structure 54 as well as the stationary target impactors 64 (Figure 4).

The top plate 75 is secured to girders 28 and 30 (Figures l and 2) by bolts 94 and, as previously noted, chutes 72 and 74 (Figure 4) fit into openings 72a and 74a of plate 75. An annular ring depends from the lower edge of ring member 52 and a ring part 102 fits therein (Figure 4) and is connected to the upper edge of casing structure 54, a sealing gasket 101 being provided above ring part 102. As can be seen in Figure l, a plurality of clamps 104 are pivotally connected to ring member 52 and screws 106 are threaded therein to press against ring part 102 to thereby releasably maintain casing structure 54 in sealing relation with gasket 101. Thus cover plate 32, which is adjustably supported on holders 88 by bolt and nut structure 90, also supports ring member 52 and easing structure 54 in the position shown in Figure 1. These parts are thus supported on

beams

12 and 14 by sturdy and simple structure and may be adjusted and removed with ease.

Referring now to Figure 3, a casing 108 has an annular flange 108a resting on top plate 75 and depending therefrom to support bearing 38 in a manner to be described in detail. Thus, casing 108 has an upper an-. nular shoulder 108k on which rests an annulus 110. A collar 112 has an upper annular flange 112a resting on an annular shoulder 108s of casing 108 and a lower shoulder 11219 of collar 112 which supports the outer races 11.4 and 116 of bearing 38. Inner races 118 and 120 of bearing 38 rest beneath a shoulder 122 on shaft 36 and are held thereagainst by a sleeve 124v on the shaft, an annular guard 125, a collar 127 and a nut 129 threaded on the shaft; thus the inner races are firmly held imposition by nut 129. v

still referring to Figure'fi bearing casing 50 has an annularbearing support generally indicated at 126 resting on its upper edge by way of annular flange 126a. The outer race 128 of bearing 40 rests on an annular shoulder 1261; while the inner race 130 thereof rests on a shoulder 132 of the shaft 36. A collar 134 on the upper end of shaft 36 rests against the upper edge of inner race 130 with an annular guard 131 thereabove, the assembly being held in position by a nut 133 threaded to the shaft. A cover plate 136 rests upon hearing support 126 and is secured thereto by bolts 127; it also has an annular ridge 136a resting on the upper edge of outer race 128. Thus, the upper bearing is secured in position to rotatably support the upper end of the shaft 36 immediately beneath the pulley 44 (Figure 1). There is preferably provided a lubricating system for bearings 38 and 40 which is of a conventional mist type, including piping generally indicated at 140 and 142 connected to

chambers

144 and 146 respectively immediately above bearings 40 and 38. The lubricant constantly infiltrates the bearing and drops into

drainage chambers

148 and 150 connected to

drainage pipes

152 and 154.

The details of the rotor construction form no part of the present invention but will'be apparent from a consideration of Figure 4. Thus, impactors 62 each include bolts 156 and sleeves 158 preferably interposed between

rings

160 and 162; these rings maybe conveniently replaced when worn; Accordingly, the entire assembly, including ring 60, may be tightened up and made secure simply by tightening bolts 156. Thetarget impactors are held in position by bolts 164 threaded into a ring 167 and cover plate 32. Thus, as can be seen in Figure 4, rotor 34 is free to rotate with shaft 36 and, as the product feeds down on hub portion 58 thereof, by way of chutes 72 and 74, it moves outwardly rapidly under the impetus of centrifugal force to be impacted violently by impactors 62 and against target impactors 64, after which it falls down through the casing- 54 to exit from the machine.

It is highly desirable to drive the rotor 34 at very high speeds, and to do so it is necessary to have a large electric motor. Large electric motors are very heavy and, when suspended in a driving position as shown in Figure 1, they usually require heavy supporting construction with attendant heavy expense. As previously noted, one of the principal objects of this invention is to support such a heavy motor in driving position on a relatively light frame where it may be conveniently installed and whereby its driving connection with the rotor may be easily adjusted. The construction for accomplishing this purpose will now be described.

Angle supports 16 and 18 have horizontal portions 166 and 168 (Figure 2) and vertical portions 170 and 172 (Figure As can be seen in Figure 5,

horizontal portions

166 and 168 are supported on rolls 20 in a manner to be described with reference to Figure 7. The construction of the four rolls and associated structure is preferably identical and therefore only one will be described in detail. Referring to Figure 7, a track bar 174 has a ridge 174a engaging the bottom surface of horizontal portion 168. There is sufiicient play in these parts so that track bar 174 is self-adjusting and may swivel about ridge 174a in a manner to be described. Rolls 20 have

flanges

20a and 2% adjacent the opposite edges of track bar 174 and a bottom track bar 176 is suitably secured to beam 12. As previously noted, beams 12 and 14 may be economically secured to posts via shell plates 76 through welding. More particularly, the beams may be welded to plates 76 and the plates bolted to the posts. Such welding will accomplish this purpose nicely but the dimensions and relative locations of the assembled parts cannot be held within close tolerances thereby. Thus, the tops of

beams

12 and 14 may not be horizontally parallel or in alignment, i.e., in the same plane. Accordingly, if the whole supporting structure is rigid, the under-surfaces of the angle supports 16 and 18 may not be parallel with the upper surfaces of the

beams

12 and 14, which, under normal circumstances, would make fora very poor and insecure motor support. However, in practice, due to the self-adjustability of the track bars 174, any expected departures from desired dimensions are compensated for and, in practice, it is found that these plates align themselves, the rolls and the beams, so that a perfect linear rolling contact therebetween is maintained.

As previously noted and as will be apparent from a consideration of Figures 1, 2 and 5, it is important to support and maintain the motor 24 in a rigid vertical position so that there will be no deviation in the angle or distance between the pulleys 42 and 44 (Figure 1); mounting 22 (Figures 1 and 5) and its associated structure is particularly important in accomplishing this result. Motor 24 is preferably secured to mounting 22 by bolts generally indicated at 178 and, thus, the mounting 22 must be held in a rigid, substantially vertical position as can be appreciated by a consideration of Figure 1 showing the driving and driven parts of this apparatus. Referring specifically to Figure 5, mounting 22 includes

side plates

180 and 182 rigidly connected to vertical portions 171) and 172 of angle supports 16 and 18;

Side plates

180 and 182 are connected at their bottom ends by a bar 184 and, further horizontal support therefor is provided by bars 186 and 188 (Figure 5) interconnected by a plate 1911 As best seen in Figures 2 and 5, a supporting plate 192 straddles

side plates

180 and 182 as well as

bars

184 and 186 and 188. The motor 24 (Figure 1) is bolted to plate 192 and hence mounting 22 supports the full weight of the motor in its vertically disposed position. There fore, mounting 22 needs considerable support against horizontal stresses in directions contrary to the axis of the motor shaft 26 and this is provided by certain reinforcing elements which will be apparent from a consideration of Figures 1, 2 and 5.

More particularly, these reinforcing elements for the motor mounting 22 comprise strips 194 and 196 con: nected to plate 192 and

horizontal portions

166 and 168 respectively of angle supports 16 and 18. As can be seen in Figures2 and 5, strips 194 and 196 extend diagonally outwardly from mounting 22 thereby to provide substantial reinforcement against a vertical displacement of side plates 1% and 182 and, more particularly, the motor mounting 22. Still referring to Figures 2 and 5, additional angular reinforcing plates 198 and 2410 are welded or otherwise connected to side plates 181} and 182 from whence they diverge outwardly and are connected to

horizontal portions

166 and 168 thereby further reinforcing mounting 22 against stresses encountered in operation.

A pair of clamping plates 201 and 263 are connected to

beams

12 and 14 respectively (Figures 2 and 5) to clamp against

horizontal portions

168 and 166 of angle supports 16 and 18. Inasmuch as the structure of clamping

plates

201 and 203 is preferably identical, only plate 201 will be described in detail. As can be seen in Figures 1, Z-and 5, plate 261 has legs 201a connected to beam 12 and a top portion 2010 extending over horizontal portion 168 of angle support 16. The plate is held against horizortai portion 168 by bolts 2911; extending from beam 12 and nuts 201d. Thus, the motor mounting may be adjusted by way of turnbuckle 48 (Figure 1) after which the

clamping plates

201 and 203 may be brought to bear upon the mounting by tightening nuts 201d. Thus, the mounting is held against any vertical displacement and the motor is held in a steady state during operation.

It will now be apparent that mounting 22 is reinforced substantially against stresses in all directions, not only by the connection of

side plates

180 and 182 with the vertical portions and 172 of angle supports 16 and 18, but also by the diagonally disposed supporting and reinforcing

strips

194, 196, 198 and 200. Thus, not only is the motor supporting structure self-aligning to allow for deviations in tolerances during manufacture by way of structure shown and described with respect to 7 Figure 7, but also the motor support 22 is substantially reinforced against any stresses displacing forces aimed against diversion of the motor shaft 26 from the desired position. The motor is thus firmly positioned on

beams

12 and 14 and held in any desired driving position by the turnbuckle 48 as shown in Figure 1.

From the foregoing description, it will be obvious that the combined weight of the heavy motor 24 and its massive mount 22 would create excessive friction if some orthodox sliding contact were provided for adjusting the driving position of mount 22. Therefore, a further purpose of using the rolls 20 acting in contact with their

track bars

174 and 176 is to provide an antifriction support for mount 22 so that proper adjustment of the driving position of the motor shaft 26 may be made with ease by means of turnbuckle 48.

So that mount 22 may be retained in close movable alignment with

beams

12 and 14 without resorting to comparatively expensive machine finishing, four alignment screws 181 are provided, which are threaded through each end of vertical portions 170 and 172. They may be adjusted to clear slightly the inner faces of

beams

12 and 14. After adjustment, screws 181 may be permanently fixed by suitable lock-nuts 183.

Accordingly, it will be seen that themotor 24 is held in a firm and steady vertical position (Figure l) by the mounting 22 and supporting structure as just described, and also the rotor is firmly supported with respect thereto by way of

straps

87 and 89 firmly fixed to the horizontal portions 12b and 14b of the

beams

12 and 14 and further interconnection by way of angle beams 84 and 86. All of these parts including the casing 50 (Figure 1), top plate 75 and lower horizontal portions 840 and 86c of

beams

80 and 82 are firmly secured to adjacent portions of the

beams

12 and 14, preferably by welding, to provide a strong unitary structure fully capable not only of holding and supporting the rotor and associated elements including cover plate 32, ring 52 and casing 54 but also the bearing structure enclosed in casing 50 (Figure 3) and other related apparatus,

To prevent leakage of contaminating material from the rotor casing, structure is provided for an air-back-flow action as will be apparent from a consideration of Figures 3 and 6. Thus, a ring-like member, generally indicated at 202, is suitably secured to cover plate 32. Ring 202 has formed therein a passage 206 leading to an annular groove 208 formed in ring 202. A collar portion 202a of ring 202 is disposed immediately above groove 208 and is contiguous with sleeve 127, and provided with grooves 210a, 210=b and 2100. The various parts so dimensioned that there is slight clearance (exaggerated in the drawings) between collar 127 and collar portion 202a. The dimensions of these clearances are such that as air under pressure enters passage 206 via pipe 216 it encounters more resistance by way of the grooves 210a, 21% and 2100 than by way of the clearance between ring 202 and sleeve 127. Thus, the major portion of the air entering passage 206 follows the path of the arrows downwardly toward and into the interior of the rotor casing thereby preventing movement of any particles from this casing upwardly to the outer space where it might be hazardous or damaging.

Accordingly, it will be seen that a highly successful and practical impacting apparatus has been provided. Such apparatus is not only economical in construction to reduce the initial capital expenditure therefore but may be easily operated and maintained. Further, it is capable of achieving remarkably high impact speeds due to its ability to impart high centrifugal forces resulting froin the high driving speed and size of the rotor.

It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efiiciently attained and, since certain .changes maybe made in the above construction without departing from" the scope ofthe invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim:

1. In apparatus of the character described, in combination, a supporting base including legs and a pair of spaced horizontal beams connected thereto, each of said beams having a flat upper surface portion, rotary impacting equipment mounted on said beams including a drive shaft and a pulley extending upwardly therefrom, a motor supporting frame having two fiat lower surface portions, a plurality of rolls interposed between said upper and lower surface portions frame and to rollably support said frame on said beams said rolls being free to roll between said surfaces in a generally horizontal direction upon relative movement between said supporting frame and said base, means at the ends of said rolls for preventing substantial axial movement thereof, vertical members mounted on said two lower surface portions for restraining the horizontal movement of said rolls, a motor secured to said frame, said motor having an upwardly extending drive shaft, and a pulley connected to said drive shaft and disposed in horizontal alignment with said first mentioned pulley to be drivingly connected thereto by suitable belting.

2. The combination defined in claim 1 in which said frame includes an upper section extending above said spaced beams constructed to receive means for connecting said motor on one side thereof and to receive means on the other side thereof for adjusting the spacing of said rotary equipment from said frame together with reinforcing plates secured to said upper section.

3. In apparatus of the character described, in combination, means forming a horizontal frame including a pair of essentially fiat upper surfaces, rotary processing apparatus suspended from said frame, means forming a motor support on said frame including another pair of essentially flat lowersurfaces, and rolls interposed between said pairs of surfaces, said rolls being free to roll between said surfaces in a generally horizontal direction upon relative movement between said motor support and said frame, and means at the ends of said rolls for preventing substantial axial movement of said rolls.

4. In apparatus of the character described, the combination of two pairs of legs, a pair of horizontally disposed substantially parallel tubular beams connected to said legs, a pair of angle braces spanning said beams in spaced relationship and rigidly connected thereto, rotary impacting apparatus rigidly connected to said angle braces, said rotary impacting apparatus having a vertically disposed upstanding drive shaft, a motor mounting structure extending above and below and between said beams, said structure adapted to support a motor with its drive shaft vertically disposed, horizontal members rigidly connected to said motor mounting structure and disposed above each of said tubular beams, lower track bars mounted to the top surfaces of said tubular beams, rolls resting on said lower track bars and free to roll thereon, and upper track bars mounted between said rolls and said horizontal members, said upper track bars being adapted to pivot about an axis substantially parallel to said beams, whereby a motor may be conveniently mounted on said motor mounting structure and predeterminedly spaced from said impacting apparatus and the said shafts may be connected by appropriate driving means.

5. In apparatus of the character described, in combination, means forming a horizontal frame including a pair of essentially flat upper surfaces, rotary processing apparatus suspended from said frame, means forming a motor support on said frame which includes horizontal members having another pair of essentially flat lower surfaces, rolls interposed between said upper and lower surfaces, said rolls being free to roll between said surfaces in a generally horizontal direction upon relative movement between said support and said frame, said motor support including vertical sections adjacent said frame and -a vertical motor mount connected thereto, and reinforcing plates connected to said vertical sections at an acute. angle with respect to an edge of said horizontal members and mounted on said horizontal members in a generally vertical direction.

6. In apparatus of the character described, in combination, a supporting base including a pair of spaced beams, rotary impacting equipment suspended from said beams including a drive shaft and pulley extending upwardly therefrom, a motor supporting frame, .a motor mounted on said frame and secured thereto, said motor including an upwardly directed drive shaft, flanged rolls between said frame and said base to rollably support said motor, smooth-surfaced track bars mounted on said beams beneath said rolls and between said flanges, and smooth-surfaced track bars between said rolls and said frame, said latter bars being constructed to pivot substantially about their longitudinal axes thereby to permit their lower surfaces to maintain substantially constant engagement with said rolls between said flanges.

7. The apparatus according to claim 6 wherein said latter bars are constructed to have respective ridges formed in the centers of their upper surfaces for enabling said pivoting action and wherein said frame bears upon said ridges.

References Cited in the file of this patent UNITED STATES PATENTS Marks May 29, Bordeleau Aug. 6, Williams Aug. 24, Hey Dec. 28, Marsna Mar. 2, Pochobradsky Sept. 13, Borton Jan. 14, Rowe May 31, Mason Oct. 22, Cline Dec. 6, Lessmann Nov. 12, Henry May 20, Thurman Oct. 10, Moore Apr. 22, Hargrove June 17, Knoll Dec. 8, MacLeod Apr. 5, Sloyan Sept. 11, Long Oct. 22, Dodds et al. Mar. 24,

FOREIGN PATENTS Sweden Apr. 21, Great Britain July 5,

France Oct. 22,