Abstract: A double screw extruder includes two conical extruder screws whose screw shafts are arranged at an angle to one another corresponding to the conicity of the extruder screws, and a drive apparatus for driving one of the screw shafts. The other screw shaft is driven from the first screw shaft through a bevel gear drive provided with teeth arranged in herringbone or arrow fashion.

Abstract: A swivel head is disclosed having a one-piece, fork-shaped support housing in which a swivel housing adapted to the shape of the support housing is inserted and pivotally mounted by means of a cover and a bearing bracket.

Abstract: An articulated head for an industrial robot has three axes of rotation and three frames, the movements of rotation of which are controlled by only two driving elements carried by the fixed portion of the wrist which is connected to the robot arm.

Abstract: In a bevel gear device, wherein bevel gears are provided which are fixed to forward ends of shafts crossing each other, respectively, and in mesh with each other, and a turning force applied to one of the shafts is imparted to the other, at least either one of the shafts is made movable in the axial direction thereof, and a pre-load is applied to the movable shaft in the advancing direction, in which the bevel gears are in mesh with each other, by use of a first force. As a consequence, fluctuations of the backlash are reliably absorbed, necessity of the backlash adjustment is eliminated, and an excessively high pre-load can be prevented from being generated. Furthermore, another pre-load is applied to the movable shaft in the direction reverse to the first force, by use of a second force weaker than the first force. As a consequence, a tooth surface force applied to the bevel gears can be reduced.

Abstract: In an apparatus for rolling metal ribbon stock into convoluted fin strip for use in heat exchangers, an uncoiler apparatus comprising a base, a pair of coil supports for supporting a pair of coils of sheet metal ribbon stock. The coil supports are mounted on a plate which is rotatable about a vertical axis so that when the plate is rotated, one coil support is moved into driving engagement with the motor and the other coil support is moved out of driving engagement with the motor. A control system interconnects the drive of the motor on the uncoiler apparatus with the drive of the remainder of the corrugated fin rolling machine for positively driving the uncoiler as a function of machine speed.

Abstract: The invention is a further development of the gear-head unit for a manipulator described in German Open Patent Application No. 34 28 748. In order to increase the radius of action and range of applicability of the gear-head unit a structural arrangement with three concentric drive axes and four allowed rotational motions of front, intermediate and rear segments of the manipulator is set forth. These front, intermediate and rear segments are pivotally mounted together about first and second inclined pivot axes which are inclined to each other and to the main drive shaft axis. Along these inclined pivot axes two hollow drive shafts connected with each other extend which are supported by reduction gears in the front and/or intermediate segments. Because of that simultaneous opposing rotational motions of the intermediate and rear segments can be obtained from a single drive motor.

Abstract: An input shaft is keyed to a first bevel gear, in constant mesh engagement with a second bevel gear keyed to a countershaft and rigidly associated with a first clutch, for causing a first pinion to become rotatively engaged with or disengaged from the input shaft. The second bevel gear is rigidly associated with a second clutch for causing a second pinion to become rotatively engaged with or disengaged from the countershaft. The first and the second pinions are in constant mesh engagement with an output bevel gear keyed to an output shaft, so that by selectively engaging one of the clutches and disengaging another of the clutches, the input and output shafts can be selectively caused to rotate counter-directionally or co-directionally. The axes of the shafts converge towards a common point to simplify the gear arrangements.

Abstract: A bearing having two rows of rolling elements has a flange extending outwardly from its outer ring. The flange is affixed to a facing surface inside of an aluminum housing, with a portion of the outer ring extending, with a play fit, in a bore of the housing.

Abstract: A power transmission device for machine tools which provides tow driven shafts at a right angle to each other. A first driven shaft is disposed at a right angle to a driving shaft and is driven from a bevel gear on the end of the driving shaft engaging a ring or crown gear on the first driven shaft. A second driven shaft is disposed parallel to the driving shaft and carries a pulley driven from a pulley on the driving shaft. The driving shaft is adjustable toward and away from the second driven shaft to allow adjustment of the tension of a belt disposed around the pulleys, and the ring or crown gear is movable axially on the first driven shaft to allow such adjustment.

Abstract: A gear assembly for high-speed transmission between either two parallel shafts or two intersecting shafts comprising two meshing gears, one mounted to a drive shaft and the other mounted to a driven shaft, each of the gears having coaxially disposed first and second toothed portions which differ from each other in that the teeth of the first toothed portion are cut at a first inclination angle and the teeth of the second toothed portion are cut at a second inclination angle different from the first inclination angle. One of the meshing gears is fixed to its shaft so as to be non-displaceable axially, while the other is mounted so as to be axially displaceable with respect to the fixed gear.

Abstract: An improved machine tool (10) has a driven cutting tool (T) which is rotatable about an axis (C) extending perpendicular to the axis (B) of rotation of a turret (200) when a toolholder (300) is mounted on an end face (203) of the turret (FIG. 7). The cutting tool is rotatable about an axis extending parallel to the axis of rotation of the turret when the toolholder (300) is mounted on a side face (204) of the turret (FIG. 10). A drive assembly (600) is operable to drive the cutting tool when it is mounted on either the end face (203) or the side face (204) of the turret. The drive assembly (600) extends through the turret and has output at a location disposed between the end and side faces (203, 204) of the turret. A pair of actuators are (400, 500) provided to operate the toolholder (300) to engage and release the cutting tool (T) when the toolholder is mounted on either the end face or side face of the turret.

Abstract: A pneumatic pump has provision for being driven by a conventional electric hand drill and chuck that are un-modified so that they can be detached by loosening the chuck jaws and used for other purposes. The provision includes first and second input shafts protruding at right angles to each other and connected by a bevel gear on each. In addition to improving drive access, to provide a choice of drive ratios, the bevel gears have different diameters. The rotary output of the shaft and bevel gear arrangement drives a reciprocating piston in a cylinder that, in association with check valves and a hose connection, can inflate a pneumatic tire, at a speed and to a pressure, determined by which drive ratio is chosen. The drill can be freely swiveled about either input shaft to which attached. A gauge indicates cylinder pressure. A frame permits the assembly of drive and pump to be used to pressurize a tank for storage of compressed air.

Abstract: Power transfer apparatus mountable intermediate a vehicular transmission and drive shaft comprising an input shaft spline mounted to one side of an inner split differential housing having a plurality of planetary gears rotatively mounted interiorly about the mating surfaces of the housing halves in engagement with a side gear. An output shaft mounted to the side gear rotatively extends through the differential housing at a bearing surface formed therein. Bearings journaled within a surrounding lubricant containing housing separately support the input and output shafts to rotate therein. Power is progressively transferred to the output shaft with the inability of the planetary gears to maintain pace with the input shaft.

Abstract: A drive apparatus having a drive shaft, at least one driven element fixedly secured to the drive shaft for rotation therewith, and at least one driven shaft operatively connected to the drive shaft. The driven shaft is oriented perpendicular to the drive shaft and is translatable along a portion of the length of the drive shaft. The drive apparatus also includes a device for continuously rotating the drive shaft, whereby the driven element and the driven shaft are continuously rotated.

Abstract: The angle drive transmission unit comprises a box-like housing defining first and second chambers in communication with each other and accommodating respectively an input shaft and an output shaft perpendicular to each other and carrying respectively first and second bevel gears in mutual mesh engagement. A peculiar feature of the invention is that the bearing associated with the inward end of the input shaft is carried in a seat defined by a closure cover of the box-like housing and detachably affixed to the box-like housing through elastically deformable means.

Abstract: A wrist for an industrial robot with a large orientation capacity comprising first, second , third and fourth turnable wrist parts arranged in series with each other. The first wrist part is rotatable about a first axis. The second wrist part is journalled in the first wrist part and is rotatable about a second axis which intersects the first axis. The third wrist part is journalled in the second wrist part and is rotatable about a third axis which intersects the second axis. A tool attachment is rotatably journalled in the third wrist part about a fourth axis which intersects the third axis.

Abstract: A drive for inducing pivoting rotational and linear movements includes a drive unit comprising two coaxial motors and having a pivot axis and a rotation axis normal to the pivot axis, and a drive element formed as a linear drive. The drive unit operated to induce swinging movements about the pivot axis and rotational movements about the rotation axis is interchangeably and releasably connectable to the linear drive. A transmission device interconnects the drive unit with the linear drive.

Abstract: A remotely operated hand gear train for the orientation of an end effector has an external housing mounted onto a robot arm and defines a first axis A.sub.1. A first housing is rotatably mounted within the external housing for movement about the first axis A.sub.1 and defines therein a second axis A.sub.2 which is substantially perpendicular to the first axis A.sub.1. A second housing is rotatably mounted in the first housing for rotation about the second axis A.sub.2 and defines therein an axis A.sub.3 which is normal to axis A.sub.2 and radially spaced from axis A.sub.1. A third housing is rotatably mounted in the second housing for rotation about axis A.sub.3 and has a gear rack circumferentially disposed about the end thereof.

Abstract: A reversing clutch assembly (13) for marine angle drive which allows the engine (11) to be mounted horizontally. To provide a required inclination to propeller shaft (12), the transmission path is bent within clutch casing (14) by using conical gearing. The casing (14) includes three horizontal shafts or input shaft (15), clutch shaft (17) and intermediate shaft (18), and only one inclined shaft or output shaft (16). Clutch shaft (17) has thereon forward and backward direction gears (28, 29) which are driven by the input shaft (15) through gear trains comprising spur gears, and double-acting clutch mechanism (30) for selectively coupling each of the direction gears (28, 29) to clutch shaft (17). The conical gearing is disposed only between clutch shaft (17) and output shaft (16) and thus includes only one conical gear (38).Parallel arrangement of three shafts (15, 17, 18) and use of single conical gear (38) contribute to save cost of the clutch assembly.

Abstract: A stopper device for positioning a push car in front of the door of an elevator. The stopper device has a horizontally pivoting arm, a vertically pivoting arm and a pair of gears interlocking them with each other. The horizontally pivoting arm is locked by a stopper to its operative position and the stopper is kept in its operative position by a pushing member.

Abstract: A differential for motor vehicles uses a crown or ring gear attached to a drive shaft to drive a single pinion gear attached to a first axle half shaft positioned at right angles to the drive shaft. In one embodiment, a second opposing axle half shaft is allowed to free wheel within the differential case. In a second embodiment, the opposing axle half shaft is slippably driven by the first axle half shaft by means of a clutch coupling the first and second axle half shafts.In a third embodiment, first and second axle half shafts are rigidly coupled to one another.

Abstract: A transfer gear assembly connected to a transaxle in order to provide the transaxle with a power take-off. The transfer gear assembly includes a case with an access opening and a shaft connectable to the transaxle through a gear set by a clutch. The transfer gear assembly also includes an actuator for moving the clutch between its engaged and disengaged positions and a combined access opening cover and actuator shield fastened to the case.

Abstract: An apparatus is disclosed for driving the two axes (11, 30) of the hand element of an industrial robot in which the casing (12) of the hand element is pivoted around the first axis while resting between two fork arms on the end of the boom (1, 10). Two reduction gears (19, 20) which can be separately driven are provided in the casing (12) and are arranged coaxially to the first axis, the reduction gears being arranged to drive coaxial bevel gears (24, 25)which, in their turn, are engaged with additional bevel gears (28, 29) supported by the casing (12) and extended at a right angle to the previous bevel gears (24, 25), the shaft of one of the bevel gears (28, 29) supporting a flange (31) which rotates around a second rotary axis (30) running at a right angle to the first axis (11).

Abstract: An angular transmission mechanism having two axles angularly disposed for torque transmission therebetween by two bevel gears which are embraced by an elastic toothed belt having a surface area which, in the untensioned condition of said belt, has the shape of a truncated cone, the belt having teeth which correspond to the teeth of the bevel gears.

Abstract: A quick change gear box mounting kit for a gear box that provides for a drive from a ground drive wheel of an implement to a shaft, includes a mounting that permits the gear box to be selectively coupled in first and second positions wherein different shafts on the gear box comprise input shafts. As shown in one position the output shaft of the gear box provides a 1.5 to 1 reduction in gearing, and by rotating the gear box 90.degree. through the use of the quick couplings and a quick attach mounting of the kit, the gear box can be changed so that the input shaft and output shaft will provide a 1.5 to 1 overdrive between the shaft then used as the input shaft, and the output shaft. The gear box mounting is useful particularly in ground drive mechanisms for apparatus such as inorganic fertilizer spreaders.

Abstract: A bevel gear backlash adjusting mechanism is disclosed in which a bevel gear is carried by a bearing and is rotatably carried by a stationary shaft so as to be axially shiftable therewith. The stationary shaft includes a supporting portion carried by the frame of a power tool, the supporting portion having a section slotted at an angle to the axis of the shaft. An adjustable slide is also supported by the frame and extends into the angled slotted section of the stationary shaft with an edge thereof formed as a ramp at an angle corresponding to the angle of the slotted section and in engagement therewith. Motion of the adjustable slide normal to the shaft will influence axial motion of the stationary shaft and the bevel gear carried thereon so as to allow an adjustment of the mesh between the bevel gear and its associated bevel gear.

Abstract: A two-axis wrist module includes a roll part 14 rotatable about a first axis A--A driven by shaft 38 coupled through harmonic drive unit 42 functioning as a speed reducer and shaft 44, and a bend part 16 carried by the roll part for rotation about the axis B--B and driven by shaft 68 and shaft 72 coupled to the bend part by the second harmonic drive unit functioning as a speed reducer, the entire wrist module being self-contained in that the motor means for obtaining the two-axis movement is provided in the power enclosure 10 of the wrist module and independent of any powering transmitted mechanically to the wrist module.

Abstract: A front-wheel driving apparatus for use in tractors and the like has bevel-gear cases one each of which a front-wheel case is fitted for free rotation about a kingpin axis, the front-wheel case being adapted to support a front wheel and accommodate therein a bevel-gear train which is for incorporating the kingpin and the front wheel. Both upper and lower end portions of the kingpin are supported on the bevel-gear case via the respective bearings, and are provided with the respective bevel pinions as mounted thereon so as to exert axial thrusts on the kingpin in directions opposite to each other, and further with the respective thrust retainers as secured thereon for taking up any possible overall balance thrust. A hub base is consolidatedly incorporated in the front-wheel case, and on the hub base there is fitted, for free rotation, through a bevel gear fixture base a bevel gear which meshes with the lower bevel pinion on the kingpin.

Abstract: A device for supporting and sealing a final drive shaft bearing in a speed change gear having a construction in which a final drive shaft is supported by a bearing holder via a rolling element bearing and the bearing holder is fitted and fixed to a gear box. A stopper flange is formed at the inner end portion of the bearing holder and a first nut is screwed to the outer end portion of the bearing holder so as to clamp the outer race of the rolling element bearing in cooperation with the stopper flange. A seal housing is integrally formed with the bearing holder and extends outside the nut. An oil seal is fitted to the seal housing and has a seal lip that comes into contact with the outer circumferential surface of the drive shaft. The final drive shaft is equipped with a helical bevel gear and the rolling element bearing consists of a double-row angular contact type bearing. A second nut for clamping the inner race of the bearing in cooperation with the bevel gear is screwed to the final drive shaft.

Abstract: A speed differential device for achieving selected rotational speed differentials between a drive element and a driven element and comprising a main shaft having a pair of spaced rotational members journalled thereon in spaced relationship, an auxiliary shaft extending transversely with respect to the main shaft and having a pair of rotational elements secured to the outer ends thereof on the opposite sides of the main shaft, the auxiliary shaft being integrated with the main shaft whereby the axis of rotation of the auxiliary shaft is the longitudinal axis of the main shaft, one of the rotational members of the main shaft being in driving engagement with one of the rotational members of the auxiliary shaft for transmitting rotation therebetween, and the other rotational member of the auxiliary shaft being in driving engagement with the other of the rotational elements of the main shaft for transmitting rotation therebetween, the driving size ratio between the engaged rotational elements being selected whereb

Abstract: A swivel head for industrial robots has two degrees of freedom, which are associated with respective spindles having intersecting axes. A first spindle serves to swivel a tool and a second spindle serves to rotate the tool. The swivel head also comprises two concentric drive shafts, which extend one in the other and carry bevel gears. One of said bevel wheels is a driving bevel gear for directly driving the second spindle by means of a bevel gear mounted on said second spindle. The other bevel gear drives a swiveling bevel gear mounted on the first spindle. In that swivel head a speed-reducing tansmission having a high reduction ratio is connected to the second spindle and serves to drive a tool carrier. The swiveling bevel gear directly carries a bearing bracket, which carries the tool shaft and intermediate gears of the transmission. The housing of the swivel head consists of a rigid part and a movable part.

Abstract: A selective driving mechanism includes an input shaft and two output shafts. The input shaft and the output shaft have profiled parts that can be engaged and disengaged with each other. A control member is movable between two selective positions in which only one or the other of the output shafts is drivingly engaged with the input shaft. The control member may be a sliding sleeve or a bell crank lever.

Abstract: A molded-plastic retaining member is mounted within the gear case or other internal housing member of a power tool and is keyed thereto. Screws pass through openings in the gear case cover and are received axially in respective bosses formed within the retaining member, thereby securing the gear case cover to the gear case. The gear case cover is formed with an internal hub, and locating ribs on the retaining member radially engage the hub to prevent the retaining member from disengaging the gear case, as the gear case cover is secured to the retaining member. Preferably, the retaining member comprises a partially-formed resilient ring which is molded from a suitable plastic material and is deformable during the assembly operation. Additionally, the internal hub on the gear case cover is provided with a bearing boss, and a bearing is mounted therein for journaling the rear portion of the output spindle.

Abstract: A vending apparatus is disclosed which is adjustable for delivering products of different sizes and shapes and which is particularly suited for easy field conversion or changeover for a desired product delivery. The vending apparatus includes a plurality of identical rotary dispensing shafts each having a helical scroll with the dispensing shafts vertically disposed in an aligned array. To establish a preselected drop-off for a given product, the dispensing shafts are each angularly adjustable relative to one another. A power operated, rotary actuator shaft is provided with a plurality of gears fixed on the actuator shaft. The actuator shaft gears are meshingly engageable respectively with a corresponding gear on each dispensing shaft.

Abstract: Power transmitting gear trains comprising four bevel gears (2, 3, 5, 6) mounted between a vertical floating driving shaft (1) and a horizontal propeller shaft (4). The driving shaft integral with gear 2 is pivotably mounted about its axis X, but without axial freedom, on a rigid body 20 itself pivotably mounted about the axis Y of gears 3 and 5, with axial freedom.

Abstract: A method and apparatus for adjusting tooth flank play between two sun gears and at least two planetary gears of a bevel gear differential drive is provided in which, after establishing the operating positions of both sun gears on their sun gear shaft, each planetary gear is shifted on its shaft, previously inserted into a transverse bore of the sun gear shaft, after which the planet gears are brought into their precise operating positions relative to the sun gears and perpendicular to the sun gear shaft and are stopped there with the maintenance of an equal tooth flank play to the sun gears, by first inserting the planetary shaft into the transverse bore of the sun gear shaft in an axially displaceable manner, then placing each planetary gear on its planetary gear shaft with a previously calculated axial distance from the sun gear shaft, and then adjusting an equal tooth flank play by axial displacement of the planetary gears with their planetary gear shafts in the transverse bore and finally fixing planetary

Abstract: A lower unit for a marine propulsion device includes a drive shaft housing having a lower end, a gearcase housing connected to the lower end of the drive shaft housing and having an interior wall defining an elongated cavity, the interior wall including a first surface portion transverse to the longitudinal axis of the elongated cavity and a second surface portion transverse to the longitudinal axis and spaced circumferentially from the first surface portion. A propeller shaft is located in and extends axially through the gearcase housing cavity, and a propeller is supported on the propeller shaft. A hollow bearing carrier member encircles the propeller shaft for rotatably supporting the propeller shaft inside the gearcase housing. The bearing carrier member is supported by the interior wall of the gearcase housing and carries a bearing rotatably engaging the propeller shaft.

Abstract: The meshing bevel gears used to drive the vertical axis looptaker of a sewing machine are preloaded with a compressed resilient member which is prevented from deflecting to a position beyond its elastic limit during the running of the gears.

Abstract: A three-axis wrist mechanism has three independent rotational axes with a point of mutual intersection. A stationary housing contains one of the axes while another axis is disposed in a tool support member. An intermediate axis is disposed in an intermediate housing. A plurality of gear trains provide the independent rotation of components about the three axes to permit selective positioning of a tool mounting surface within a substantially hemispherical envelope. The gear trains are arranged so that an unobstructed gear passage is maintained between the stationary base and the tool support member for accommodating hoses and/or wires which are used to transmit fluid and power to a tool mounted on the mounting surface of the tool support member.

Abstract: A wind power system driven by multiple rotary devices strung on a cable.

Abstract: A craft for travel upon a water surface, the craft including a frame mounted upon two spaced apart pontoons, a windshield, a two passenger seat, and a foot powered mechanism mounted on the frame, the mechanism including propellers mounted on foreward-rearwardly and upon sidewardly shafts so that the craft can travel in any direct or any combination of directions.

Abstract: A power transmission device adapted to be employed with a chain saw for providing a rotary output in a plurality of directions. The device includes a housing having an input shaft coupled with an output shaft where the input and output shafts are right angles to one another. The housing serves as the support for the driven mechanism and provides mounting flanges about both the input and output shafts. The mounting flange associated with the input shaft cooperates with a chain guideplate to adjustably mount the housing to the chain saw. By simply loosening two screws, the orientation of the output shaft relative to the chain saw can be changed by up to substantially 180 degrees. The mounting flange around the output shaft is designed to allow a 360-degree range in orientation of the driven device about an axis coincident with the axis of the output shaft.

Abstract: A balanced power transmission device having specific utility for windmill applications utilizing conventional propellers on a horizontal shaft. The horizontal propeller shaft is located on a tower and drives a pair of freely rotating gears in opposite directions mounted on vertical coaxial shafts. The opposite rotating gears are each variably connected to counter-rotating coaxial shafts through individual ratchets that cause the shafts to rotate in opposite directions and thereby balance out any residual torque. The counter rotating shafts extend to the base of the supporting tower and are connected in a driving relationship through a pair of gears each directly connected to the coaxial shafts. The pair of gears drive a single bevel gear which in turn is connected to a suitable generator located on the ground for generating electric energy. The counter rotating coaxial shafts prevent any tendency of the propeller shaft to rotate about the drive shafts due to torque caused by propeller rotation.

Abstract: A weather-vane steering-device comprises a gearbox secured to a boat, a turntable rotatable in the gearbox, a weather-vane rotatable in the turntable, a steering element rotatable in the gearbox, a first differential gear between the weather-vane and the steering element, and a second differential gear between the turntable and the gearbox, a freely rotating member of the first differential gear being connected to a freely rotating member of the second differential gear.

Abstract: In a gear drive for drivingly connecting two rotatable shafts the transmitted power and torque is split between two parallel paths to reduce the size and required power handling capacity of the gears and other components. The power and torque is divided between the two paths by an axially shiftable torque distributing member carrying two gears each meshing with a respective one of two other gears each comprising part of a respective one of the two parallel power paths. The torque distributing member is rotatably supported relative to the frame or casing of the drive by a bearing surrounding and engaging the member itself. This accurately locates and fixes the axis of rotation of the member and reduces the bearing requirements for its associated shaft.

Abstract: A jointed drive unit is provided having a power output shaft used for driving a socket or the like, and an input shaft which transmits power to the output shaft through a gearbox permitting any angular orientation between input and output shafts greater than about 20.degree.. The mechanism is more than merely a gearbox for transmitting rotational motion at an acute angle because due to the gear arrangement and a ratchet mechanism incorporated in the preferred embodiment the output shaft can be made to rotate, not only by rotating the input shaft, but also by pumping the input shaft in a plane parallel to the output shaft, or alternatively, moving the input shaft back and forth in a plane perpendicular to the output shaft in conventional open end or box end ratchet wrench fashion.

Abstract: PCT No. PCT/US79/01010 Sec. 371 Date Nov. 13, 1979 Sec. 102(e) Date Nov. 13, 1979 PCT Filed Nov. 13, 1979 PCT Pub. No. WO81/01450 PCT Pub. Date May 28, 1981A differential gear assembly (10) wherein the tooth face loading is utilized to maintain the driven idler gear (17) in a preselected disposition without the need for a thrust washer. The positioning of the idler gear is controlled by the use of a single tapered roller bearing assembly (18) which serves as a thrust absorbing structure. The driver gear is maintained against the roller (28) of the roller bearing by the toothed loading during operation of the differential gear assembly and by a spring (30) at all other times. One race (25) of the single tapered roller bearing assembly (18) may be formed integrally with the bevel gear and, more specifically, may be defined by a surface portion of the bevel gear.

Abstract: A high-speed bevel gear transmission system for transmitting power from an input shaft to a pair of parallel outputs shafts the axes of which intersect each other. The input shaft has a pair of driving bevel gears which are fixedly mounted thereon such that the driving bevel gears face in opposite directions and which have the same number and size of teeth spirally arranged in the opposite directions each other. The output shafts are supported on angular contact ball bearings and have two driven bevel gears fixedly mounted thereon which are engaged with the driving bevel gears. The speed transmission ratio of the output shafts to the input shaft is 1.45:1 to 0.476:0.1, the relation between a pressure angle .alpha. and helix angle .beta. of the driving bevel gears and driven bevel gears, and a pitch cone angle .delta. of the driven bevel gears are defined by the formula, R=[(tan.alpha..multidot.sin .delta.)/cos .beta.]-tan.beta..multidot. cos .delta. when 0.324.ltoreq.R.ltoreq.0.1.

Abstract: A power transfer device including a gear box which is rotatably driven from a suitable power source and provided with an output shaft for transmitting power to a desired location at a predetermined speed in relation to the input rotational speed of the gear box and a stationary shaft projecting from the gear box in which the stationary shaft and output shaft have bevel gears on the inner ends thereof in meshing engagement with bevel gears journaled on independent parallel shafts extending transversely of the gear box with each of the bevel gears on the parallel shafts including a spur gear integral therewith and in meshing engagement with each other with the spur gears having a predetermined ratio for determining the output shaft speed with the structural arrangement being such that the forces on the parallel shafts for the spur gears and bevel gears rigid therewith are neutralized.

Abstract: An improved drive unit for a food processor of the type wherein the drive unit is enclosed in a base housing and has a vertically extending spindle which extends into a processing bowl and carries rotary tools thereon. The drive unit comprises a horizontally mounted universal motor carrying a pinion gear at the end of its shaft. A ring gear meshes with the pinion and encircles the motor on a concavo-convex support structure. The support structure is coupled to the vertical spindle. Included in the drive unit are a novel three point shock mounting for the motor and an automatic brake to prevent coasting of the tool after the motor is deenergized. In a further embodiment of the drive unit the motor and the concavo-convex ring gear are held in a motor mount which is vibrationally isolated from the base housing for providing quieter operation. This mount arches up over the dome of the ring gear which in turn arches up over the motor.