US2027111A - Motorized drive - Google Patents

Description

Jan. 7, 1936.

R. E. MANLEY MOTORIZED DRIVE 3 Sheets-Sheet l Jan 7, 1935- R. E. MANLEY 2,027,111

MOTORI ZED DRIVE Filed Deo. 16, 1933 5 Sheets-Sheet 2 R. E. MANLEY MOTORIZED DRIVE Jan. 7, 1936.

Filed Dec. 16, 1953 I5 Sheets-Sheet 3 lNyENToR Patented `an. 7, 1936 CUMTED STATES PATENT ePrice- Robert E. Manley, York, Pa., assigner to Manley Products Corp., York, Pa. a corporation of Pennsylvania Application Qecembenl, 1933,` Serial Np. '702,771

276 Claims.

and, beingI adaptable to use with different mia-,1

chines.

A further object of the invention is the provision, of aA simple and enicient merchandisable unit whichl can bemade up for` anumber of vdifferent sizes of machines and be soldJ direct to thegfactory owner without the need for any dimensicnsl being given by. him except a general idea of` the machine, for example, it would be sufcient forthepurchaser. to sayv he had a 16 lathe.,

A further object is to provide a simple motorizing unit which will include ready means for reversal in casethelathe to which the unit is applied isnot equippedwith a chasing device.

Other objects of,v the invention include provisions for shifting the belt with ease, speed and safety; permitting a tighter belt drive than is possible with overhead shafting, thus increasing production since it is impossible to shift the belt with ordinary drivesA if the belt is tight; and provisiony cf` a unit which avoids all binding action such` as occur when the unit has but one stud. 4

rlhere are in use in this country great numbers of. machines which are driven from shafting and which could be placed more conveniently and made far more economicalin use if some simple way could be provided to eliminate the overhead shafting. While it is possible today toA buy a motorized unit for any one particular machine and-'in fact two concerns are at present making motorized drives for fairly general use, thesedefvices require that the purchaser give eighteen different measurements in one case and twenty in the other, from` Which'the'drive is built at the factory, requiring a delayof about six weeks'. 45 Ay very important object of the present invention is toprovide threeor four sizes of motorized unit. which can be` placed in boxes and sold to the owners of` different sizes of machines for exv ample, the statement that the machinefor which the 'imii @lesleflfisl` e207 lathe if `amply Sufficient, for, the unit` adapted to thisl size is "equally adapted to a lathe varying anywhere from '18 te 24?.' in swing. All the parts, of the present unitsA are, Vadjustable so that; with the horsepower refk "Wir-ement. given, aunit canne snipped direct m,

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the shop from `the factory and can be installed without'diicultyl InV the drawings:- Figure` 1 is a perspective view of my unit in place onalathe.

Figure 2" isa 'front elevation. FigureV Sis'a side elevation. `In Figure' 1 I have shown as an embodiment of` my invention the unit as applied to. a lathe I0, the

rear web Ilfof which is almost invariably free of obstructions just behindthe cone pulley I2 and this portionV ofthe mechanism, therefore used on which to mount the supporting bracketsy l5 as, for example, by means of the screws I4. The bracket l5 will, vary very materially in. size, shape and location when used with other devices such as a saw in whichcase it will extend from1 one end of the frame; a drill, in which case the bracket will be secured to a bed plate; a Shaper, or boring mafv chine, irl which case not infrequently thelpedestal may be secured to the floor more conveniently than to any'portion of the frame. In the lathe however, the rear web is always available and would` invariablybe used. The bracket l5 has a finished upper surface I64 and is slotted to receivethe bolt l1 of a post socket I8, receiving a post 2B which forms theV main support for the unit". `At the top of the post a post arm 2lV is secured and this carries a horizontal rock shaft 23 which in my preferred construction is rigidly held in the post arm 2|.

At or near each end of the rock shaft is placed a brace bracket,` for example, 25 and4 26- having downwardly extending oifset portions 2l ending in hubs 29, each hub being securely fastened to a tie rod3 as by the set screwsv 3Iand the upper hub portion"of the brace bracket is made fast to the lrock shaft by a similar countersunk set screw132.-V

The normal oil hole of the, two pedestals of the, lathe is enlarged to receive a supporting member-,for the front ends of the two tie rods 3l), such member conveniently being built up of a`nipplef34 carrying an anchor fitting 35 in whichv is threaded a service L 36 to receive the grease cup Blwhich has been removed from the pedestal. The L, the vanchor fitting and the nipple provide -a thru'passageway for the oil or greaseso that the oiling 'of the bearings is substantially unchanged.l A pair of knuckle joints 3B and 39 'i receive between them a rightv and left stud 4l) having a central hole 4| therethru for convenient turningof the stud so as to alter the distance betweenf the knuckle joints, this function being neeessary toA secure the desired tightness of the` belt 43 which drives the cone pulley I2. At the upper portion of the knuckle joint 39 is secured an eccentric shaft bearing 44 which has a downwardly extending lug 45 extending between the two ears 45 of the knuckle joint 39 and has extending from its rear a socket 41 into which is Y secured the front end of a proximate tie rod 30,

as by the set screw 48. The parts mentioned thus far form a' rigid support on which is pivoted a superstructure consisting of a frame carrying the driving mechanism.

The main portion of the rocking frame is made up of eight channel members arranged in pairs, the larger ch-annels 59 running from front to back and are spaced apart the correct distance by the' usual ller blocks and pipe spacers. The transverse channels are mounted in pairs across the main channels 50 and likewise have spacers 52 for holding these motor rail channels the proper distance apart to receive snugly the bolts 53 and 54 securing, respectively, the legs 56 of the electric motor 51 and the clips 58 which join the pairs of channels. At the front end the rocker frame channels 50 pivotally receive the upper hub of the eccentric strap member 60 and toward the rear these rocker frame channels each carry a rocker shaft bearing 63 fast to the channels as by the clips 64 and the bolts 65. In the preferred modification the rocker shaft 23 does not turn but the bearings 63 do turn on this shaft, being held against longitudinal or side to side movement by two or more set collars 66 fixed to the rock shaft 23.

A drive pinion is supplied with the unit to be secured to the armature shaft 1I of the motor 51 which usually is not supplied, there generally being available at the place of installation a,

suitable motor. The drive pulley 10 drives a plurality of V belts 12 and drives the pinion shaft by means of a pulley 14. The main driving pinion 16 fast on shaft 15 meshes with gear 11 on counter shaft 8D supported preferably by the roller bearings 8| in bearing housing 82 resting upon the rocker frame channels 5I) and secured to them as by the screws 84 which are threaded into the bearing housing 82 and engage plate washers 85 below the bottom anges of the two channels of each pair.

It is my preference to enclose the motor belt or belts 12 with a guard 88 and to provide ay similar guar-d 89 for the gears 16 and 11. Both of these are preferably fixedly secured to the left front rail as by the br-ackets 99 and 9| but in the larger sizes while I secure the gear guard to the rocker frame channels or rails 5I) as by the boss 99, I find it a bit more convenient, 'especially in the larger sizes, to connect the rear of the belt guard to the motor rail channels, as, for example, by the lug 9| integral with the guard, the slotted link 92, bolt 93, and link bracket 94 secured to the motor rail channels, this construction probably being most clearly illustrated in Figure 1.

On the eccentric shaft I (l0 which may oscillate in the two eccentric shaft bearings 44 in which it turns with considerable friction regulated by thevscrew IUI in the split jaws of the bearing, is a pair of eccentrics |02 turning within the eccentric straps 60. The eccentric lever |94 is secured to the eccentric shaft as by the set screw |05 and the hub |05 of the eccentricY |02 is similarly secured as by the set screw |61. In the position shown in the drawings the eccentric lever is in normal working position at which time thecountersh-aft 80 carrying the upper cone pulleyY 69 is its highest'po'sition and the belt rially so that it is extremely simple to shift the belt in usual m-anner. During the movement of the lever |04 the entire superstructure turns about the axis of the rock shaft 23 with the two rocker shaft bearings 63.

In installing this device on an existing lathe, for example, the upper line shaft is removed, saving the upper stepped cone pulley |99 with its shaft 80 which doubtless will need to be turned down on its two ends to t the roller bearings 82. 'I'he oil or grease cups 31 are now removed from the lathe pedestals and the hole is tapped to larger size to receive the close nipple. The

grease cup 31 from the machine is now screwed 20 weight shall be as near as possible in line with the center of gravity of the superstructure. The rocker shaft bearings 63 are placed in a proximate position and the frame consisting of the eight channels is assembled on the rocker shaft bearings. It is obviously quite whether the rock shaft turns with the rocker shaft bearings or not but I prefer that the rock shaft shall be held stationary as this seems to give a more sturdy structure. The counter shaft axis 89 is next tested to insure that it is precisely parallel with the axis of the lower unchanged stepped pulley I2. rFhe two right and left studs 49 each have the so-called micrometer threads so that adjustment can be made precise. The tie rods 39 are furnished a bit longer than usually necessary as is the rock shaft and it is convenient when the device is installed to cut off the unnecessary ends of the tie rods beyond the brace brackets 25 or 26, as the case may be,

when these tie rods have been made horizontal so as to give a rigid structure consisting of the three posts, the two tie rods, the rock shaft and the brackets 25, 26 and 44.

It will be noted that every portion of the device is adjustable, consequently once the horsepower of the motor is given a unit can be furnished without any other information. It is much more usual to specify the size of the lathe because the horsepower needed for the lathe is known as soon as the size is known.

The drive is from the motor pulley 10, thru the belt 12, to the pulley wheel 14 which is on the same shaft as the pinion 16 which meshes with gear 11 on counter shaft 80 which is the shaft of the cone pulley |09 which is connected by a belt 43 with the cone pulley I2 of the lathe. In the position shown in the figures the belt is taut, the eccentrics I 02 being at their highest point and the rails 5I) being substantially horizontal. Should it be desired to increase or decrease the tightness of the belt when the parts are in this position, the two studs 40 are turned by means of a rod placed thru the hole 4I, care being taken to keep the axis of shaft B0 exactly horizontal. When the eccentric lever I |14 is moved immaterial downward, the `upper superstructure is moved as aunit about theaxis ofroclshaft' 23 and the" belt"43"is made've'y'loose s ofthat itcanreadily be shifted'to a diierent step ofther cone" andl when 'inproper position thelever `Il!! is 'raised Where it remains as there is no tendency `for it to move' when at'or near dead cventerposition. The bolt "IUI may be used however, to'increasefor decrease the friction between the eccentric shaft and its bearings 4 4.

In some casesI have eliminate the pinion shaft 15, as forexample, in devices which like a wood lathe `require a` high speed countershaft.' In these cases`the motor armature pulley IQ thru the belt or belts 12 drives a fairly large pulley mounted directly on the countershaft, thus eliminating the usualv re-4 duction gearing. i

` 4v'e guards 88 and894 are preferably tied together as byy a bracket IIVI adjustably secured to the 'guard B9`by means of a set screw' I lv2 and carrying at its opposite end a bolt H3 which engages in the slot H44 of the forwardlyproj'ect-- ing bracket l l5 which bracketis adjustably secured to the guard 88 by'the screw Ill.` A This construction gives the necessary rigidity without making? this part of themachine any less ilexible foradjustment than the other parts whereby the entire mechanism may be adapted to almost any type of power driven machine found in a machine shop. A

What I claim is:

1e. In a device Afor motorizing a line shaft machine of the belt andpulley driven'type, an adjustable support for accommodating electric motors of various sizes, a counter shaftadjustably secured to said support and adapted to 'receive a drive pulley for driving the power receiving pulley of the machina'means for mounting said support and shaft to turnas a unit about an axis fixed with respect to said machine so that the axis of the counter shaft is constantly parallel with the axis of the power receiving p ulley of the machine, means adapted to engage a fixed por# tion of the machine, and unit raising mechanism spaced from said xed axis and engaging said last `mentioned means for moving the unit about its pivotal axis to alter the distance between the shaft and the axis of the cone pulley.

2. The device of claim 1 in which the unit raising mechanism includes a pair of spaced eccentrics.

3. The device of claim 1 in which the electric motor support and the means for mounting the memberstoV turn as a unit comprise a plurality of' longitudinal anda plurality of transverse rails rigidly but adjustably secured together to form a frame of adjustable dimensions, the distance between the longitudinal rails being determined by the size of the motor supported and the distance between the transverse rails being approximately determined by the length of theY counter shaft.

iesehle Suppen fer an electric meter @sereine two transverse members, apair of rails to which'V found it practical to` rality of front posts each extensible and secured to a fixed portion of the machine, and aplurality of unit raising mechanisms engaging said front posts and said frame for moving the unit about the axis ofthe rock shaft `so` as to alter the distance between the counter shaft and the axis of the pulley vof the machine.

6. The device of claim 5 in which the machine is a cone driven lathe, the front posts each rise from a pedestal of the lathe,y and the means for moving the unit about its pivotal axis includes a pair of eccentrics mounted on a single shaft.

7lAThe combination with a cone driven lathe, of a rock shaft adjustably mounted upon the lathe with its axis parallel to the center line of the lathe and at an adjustable distance therefrom, a rocking frame adapted `to oscillate about the axis of the rock shaft, an electric motor adjustably carried by said frame, a cone pulley adjustably mounted on said frame with its axis parallel to the axis of the rock shaft, means operatively connecting the motor and the counter shaftfand means engaging a fixed portion of the.

lathe forv raising and lowering the end of the frame carrying 4the counter shaft, said means comprising an extensible front post rising from each pedestal ofthe lathe, an eccentric shaft mounted in said posts, and means connectingthe eccentric with the forward end of said rocking frame.A

3. 'I'he combination with a cone pulley driven machine, of a frame pivotedabout an axis fixed with respect to the machine, a driving cone pulley rotata -ly mounted (inthe-frame, a belt connecting said pulleys, means forA rotating the driving pulley, means for moving the frame about its axis to loosen and tighten the belt, and tensioning means for increasing `or`decreasing the tightness of the belt when the frame moving means is in position to tighten the belt, said means for i movingthe frame, together with the tensioning meansforming an articulated connector between the free end of the frame yand the machine, said connector including an eccentric and its strap.

9. In combination, a bracket adapted to be v'rigidly secured to a fixed portion of a pulley driven machine, a support adjustably mountedin'said bracket, a frame carried by said support, and oscillatable about an axis which is adjustable with respect to said support, a pulley mounted on said frame with its axis parallel to the axisl of the pulley of the machine, and means carried by the frame for driving said pulley.

10. Inv combination, a rock shaft, means for mountingv said rock shaft upon a pulley drivenV machine, a pair of spaced members adjustable along said shaft and oscillatable about the axis of saidshaft, a channel adjustably secured to each-member, means for connecting the two channels to form a frame, a pulley mounted on said frame, and Vmeans, adjustably carried by said frame for drivin-g said pulley.

` 1 1 The combination with a'cone pulley driven lathe of a support rigidly but adjustably secured to said lathel at the e 'rear thereof a f rock "shaft above, to the rear of, and parallel totheaxis of the lathe, a frame pivoted to move about the axis of the rock shaft and carryinga motor, a driving cone pulley and reducing mechanism between the motor and driving pulley, a belt connecting said driving pulley with the pulley of the machine, and means for raising and lowering the free end of the `frame to cause the belt to engage flrmlythe two pulleys `and to cause the belt to become loose forV shipping, said means including a manually movable handle at the front of the 'machine inY convenient reach of the operator. Y

12. The device of claim 11 in which the frame includes a pluralityV of bearing members adjustably mounted along said rock shaft, a pair of rockerA frame channel members adjustably secured to each bearing member, and a pair of motor supports each consisting of a pair of motor rail channels rigidly spaced,V apart to receive between them securing members for holding the motor rail channels to the rocker frame channels.

13. vIn a device for motorizing a line shaft machine of the belt and pulley driven type, a frame for an'electric motor and for a counter shaft comprising a base of two relatively adjustableV `pair for adjustably securing the bearings thereto, w

a counter shaft in said bearings, a motor support comprising two relatively adjustable pairs of channel irons adjustably spaced from said shaft. means for adjustably securing said pairs of channel irons to the rst mentioned pair, the channel irons of each pair having their webs upright and their flanges opposed, means for connecting the channel members of each pairv rigidly together with the edges of said opposed fianges in spaced relation, and adjustable means between and engaging the upper fianges of the channel irons for adjustably securing an electric motor thereto. k

14..'Ihe device of claim 13 in which a second pair of bearings is adjustably secured to the 16. The device of claim 13 in which a secondset of bearings is adjustably secured to the first mentioned pairs of beams adjacent one end of and o-n thev side opposite the counter shaft bearings, a rock shaft in said second set of bearings for pivotally supporting theframe, a pair of braces secured to the opposite end of said first mentioned pairs of beams, a'pair of rigidly connected eccentrics carried in sai-d braces and means adapte-d to engage a line shaft machine forY supporting said eccentrics.

17. A device for motorizing a line shaft machine comprising a horizontal frame for adjustably supporting an electric motor and a counter shaft, downwardly extending alined brackets adjustably secured to the frame near one end, for engaging a rock shaft, a pair of spaced eccentrios, downwardly extending alined brackets adjustably secured'to the frame at the other endY -forengaging said eccentricaa shaft for rigidlyY 2,027,111 adjustably carried by said support with its, axisv connecting said eccentrics. to turn in unison, means Vfor rotatably mounting the eccentric shaft on a line shaft machine, means for adjustably supporting the rock shaft and tie rods for adjustably connecting the rockv shaft with the eccentric shaft. A Y

18. In a device for moto-rizi-ng a line shaft machine of the belt and pulley driven type, a support for an electric motor, a counter shaft adapted to receive a. drive pulley for driving the power receiving pulley of the machine, means for mounting said support and shaft to turn as a unit about an axis fixed with respect to said' machine so that the axis of the counter shaft is constantly parallel with the axis of the power receiving pulley ofthe machine, spaced posts rising from fixed portions of the machine, and unit raising mechanism spaced from said fixed axis and positioned by said posts, for moving the unit about its pivotal axis to alter the distance between the shaft and the axis of the pulley.

19. In ar device for motorizing a line shaft machine of the belt and pulley driven type, a support for an electric motor, a counter shaft carrying a cone pulley for driving the power receiving cone pulley of the machine, a pair of spaced bearings in which said counter shaft turns and being adjustably mounted for movement toward or away from each other and toward and away from the motor whereby to accommodate shafts, pulleys and motors of different dimensions so that said support and shaft are adjustably mounted relative to each other but to turn as a unit about an axis xed with respect to said machine, means adapted to engage a fixed portion of the machine, and unit raising mechanism spaced from said fixed axis and positioned byu said last mentioned means for moving the unit about its pivotal axis to alter the distance between the counter shaft and the axis o1' the driven conepulley.

20. In a device for motorizing a line shaft machine of-the belt and pulley driven type, a support for an electric motor, a counter shaft adapted .to receive a drive pulley for driving the power receiving pulley of the machine, means for mounting said support and shaft to turn as a unit about an axis fixed with respect to said machine so that the axis of the counter shaft is constantly parallel with the axis of the power receiving pulley of the machine, two separately extensible posts, each engaging a xed portion of the machine, and unit raising mechanism spaced from said iixed axis and positioned by said posts, for moving the unit about its pivotal axis to alter the distance between the shaft and the axis of the pulley.

21. A motorized line shaft machine comprising a lathe having a cone pulley, a support for an electric motor, a countershaft, a driving cone pulley on said counter shaft, means for adjustably mounting said support and shaft relative to each other but to turn as a unit about an axis fixed with respect to said machine so that the axis of the counter shaft is constantly parallel with the axis of the driven cone pulley, a short belt connecting the two cone pulleys for driving the lathe and two posts, one rising from each of the lathe leys without disturbing the adjustment of either or both of the two posts. Y

22. In a device for motorizng a line shaft machine of the belt and pulley driven type, a support for an electric motor, a counter shaft adapted to receive a drive pulley for driving the power receiving pulley of the machine, a rock shaft parallel to the driven pulley ofthe machine, a belt engaging said pulleys, means for mounting the support and countershaft to turn as a unit about the axis of said rock shaft, means engaging a `fixed portion of the machine, a plurality of braces extending from the rock shaft to the last mentioned means, and unit raising mechanism spaced from the axis of the rock shaft and positioned by said braces and said means, for moving the unit about the axis of the rock shaft to alter the distance between the constantly parallel axes of the two pulleys, to facilitate shifting of the belt.

23. In combination, 4a machine having a driven cone pulley, a support pivoted about an axis fixed with respect to the axis of the pulley, a drive cone pulley on said support, four members pivoted to each other in pairs, one ofeach pair being pivoted to the machine and the other to the support, a belt connecting the two cone pulleys, means at the junction of the members for quicklymovng the axes of the cone pulleys to ship the belt, and a positive telescoping threaded connectionfin one member of each pair for adjusting the tension of the belt when in driving necting said frame to such a machine, said frame having a rock shaft at one end, a second frame mounted on said rock shaft for supporting a motor and a counter shaft, means spaced from the rock shaft for connecting the first frame to the second frame for moving the latter about the rock shaft and tensioning means incorporated in said rst mentioned means for adjusting the distance between said first frame and said line shaft machine.

25. The device of claim 24 in which said first frame is substantially quadrilateral in form comprising said rock shaft on one side, a rotatable shaft on the other side for operating said frame 20 moving means, bars on the remaining sides and means for adjustably connecting said shafts and bars to provide a frame of adjustable dimensions to fit various sizes and kinds of machines.

26. The device of claim 24 in which each frame 25 consists of fabricated parts adjustably connected together whereby to accommodate machines and motors of various shapes and sizes.

ROBERT E. MANLEY.

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