Showing papers on "Drive wheel published in 1971"

Differential-lock type device for a motor vehicle

Abstract: There are disclosed arrangements combined with known anti-skid systems that will prevent spinning of one drive wheel while the other drive wheel is stationary due to differential gearing. This is accomplished by providing a threshold circuit responsive to excess acceleration of the spinning wheel, in addition to the normal acceleration threshold circuits of an anti-skid system, to cause brake pressure to be applied to the wheel brake cylinder of the spinning wheel. The additional threshold circuit is placed in operation by the vehicle driver.

Yard maintenance apparatus

Abstract: A self-propelled wheel mounted yard maintenance apparatus carrying an engine to drive the unit and a working element which may be a sweeper brush, a snowplow, a lawn mower or the like. The working element is direct-connected to the engine and is adapted to be rotated to function as the apparatus is moved across a yard. The apparatus includes a pair of drive wheels mounted upon a shaft to rotate to propel the unit. A differential is carried upon a driven shaft connected to the engine and a driving shaft connected to the drive wheel shaft. The differential is free to rotate upon these shafts and when rotating freely, it does not apply any driving torque to the driving shaft. A brake is provided to reduce the rate of rotation of this differential or to stop its rotation completely and in either case, the braking action will impart driving torque to the driving shaft. The driving shaft rotates in a direction opposite to the driven shaft when so restrained by the brake. The working element may rotate in a direction opposite to the direction of rotation of the drive wheels or in the same direction of rotation by the addition of reversing gears in the mechanisms between the engine and the working element.

Vehicle electric drive providing regulation of drive wheel operating speed difference

Abstract: A vehicle electric drive system includes two electric power supplies connected respectively to energize front and rear drive AC induction motors to propel front and rear sets of drive wheels through respective front and rear differentials. The AC voltages supplied the motors are comprised of substantially rectangular voltage pulses of alternating polarity. The operating speeds of the two motors are sensed and compared to ascertain whether the difference in operating speeds exceeds a predetermined amount. If the sensed operating speed difference is in excess of a predetermined value, the width of the voltage pulses supplied the motor operating at the higher speed is reduced to reduce the level of the voltage supplied that motor, thus reducing its speed to ensure that the front and rear sets of drive wheels are operated with a controlled maximum speed difference.

Front wheel driven floor scrubber

Abstract: A battery-powered three-wheeled floor scrubber vehicle having a single steerable front drive wheel and a frameless body structure consisting of a series of interconnected tank members and a pair of hydraulically controlled floor scrubbing brushes and squeegee arrangement mounted forwardly of the front steerable drive wheel.

Electro-mechanical servo drive

Abstract: An electro-mechanical servo drive for precisely moving a miniature EDM electrode into engagement with a workpiece including a precision micrometer lead screw having a drive wheel and a push rod. A movable spindle assembly biased into engagement with the lead screw to eliminate back lash from the spindle assembly and the lead screw, and a drive motor frictionally engaging the drive wheel to impart rotary motion thereto with transmitting vibratory motion.

Power driven auger attachment for snowmobiles

Abstract: An ice auger is driven from the power train of a snowmobile through the instrumentality of an auger drive wheel which is rotatably mounted in a drive wheel mounting bracket and forced down against the inside of the bottom run of the snowmobile drive track. The drive between the drive wheel and the auger is accomplished using two universal joints with a telescoping drive shaft in between them. The mounting bracket pivots off of the underside of the snowmobile to force the drive wheel against the drive track and is held in place by an integral tensioning arm fastened to the snowmobile frame.

Low slip belt drive

Abstract: A low slip belt drive in which a thin, highly preloaded steel belt is wound around a drive wheel and a reversing wheel, and in which an elastic tensioning element forms a belt lock aad also dampens vibrations originating in the steel belt and drive.

Steering and drive assembly for self-propelled units

Abstract: A combination pump and motor assembly is operative connected to each of the two drive wheels. The pump and motor assemblies are controlled in the forward mode by a single speed lever. A steering wheel operates a rack and pinion assembly having two racks each of which is operatively connected to one of the pump and motor assemblies so that turning the steering wheel speeds up one pump and motor assembly and hence one drive wheel and slows up the other pump and motor assembly and hence the other drive wheel. Means are provided to over-ride the steering mechanism so that one pump and motor assembly or the other can be reversed thus allowing very sharp turns.

Wheel slip sensor

Abstract: Slippage of a drive wheel in a land vehicle is detected by means of doppler shifts induced in pulsed ultrasonic beams. First and second transducers transmit bursts of ultrasonic energy which are directed at the wheel surface and the ground surface, respectively. The doppler shifted return pulses are detected by respective transducers and processed in separate channels. Counters in each channel generate gate signals indicative of the length of time that is required for the corresponding transducer to receive a predetermined number of cycles of reflected energy. An up-down counter operates from a high frequency clock in response to the two gate signals. The difference in duration of the two gate signals leaves a differential count accumulated in the up-down counter which represents the slip between wheel and ground surfaces.

Three wheeled automotive vehicular construction

Abstract: An engine-energized fluid-motor-driven three-wheeled automotive vehicle utilizes a somewhat bottle-shaped continuous basic frame structure whose reduced front end part serves to mount a pair of wheels, a combustion engine and a fluid pump, and whose back end part serves to centrally carry a rear drive wheel and its actuating fluid motor. The construction provides a stable vehicle whose rear drive wheel motor assembly is resiliently positioned to absorb road shock.

Rotary movement distance measurement device

Abstract: A rolling-contact adding and subtracting distance measurer comprising a pair of differently graduated endless tapes driven by unequal size sprocket-pulleys integral with a drive wheel rotatively mounted in a palm-sized case, with a portion of the wheel rim protruding from the bottom of the case; idlers carry the tapes in a flat run past an observation window in the top of the case; anti-tip rollers keep the case aligned with the surface to be measured in a typical embodiment.

Textile folding machine

Abstract: This disclosure relates to a folding machine and specifically to an apparatus for folding textile or like products in a serpentine or sinuous fashion. Textile products, after having been processed and normalized in the conventional fashion, may be folded for storage, shipment, or further processing purposes. This is accomplished in a folding machine having a pair of rollers arranged for reciprocating movement above a table surface to lay the fabric in a serpentine fashion on the table. The reciprocating rollers are driven by a pair of drive wheels at the ends of the rollers and mounted in horizontal track members having top and bottom drive wheel engaging surfaces. The drive wheels are pivotal within the track member on a yoke assembly so that the direction of travel of the rollers with respect to each other remains constant even as the direction of travel of the yoke assembly changes.

Frontally raiseable vehicles amusement apparatus

Abstract: There is provided amusement apparatus comprising a miniature simulated vehicle positioned within an upright hollow housing, and remotely controllable by a rearwardly externally positioned operator, the apparatus vehicle simulating the front-end raising or ''''wheelie'''' effect of a typical land-vehicle as it might rapidly traverse inclined or uneven terrain whereby pronounced vertical accelerations are subjectable thereto (and especially evident at the land-vehicle''s forward-portion). The amusement apparatus also preferably includes a simulated-terrain drum located within the housing frame, means a drive wheel on the the vehicle frictionally engaging the drum for causing relative longitudinal velocity between the simulated-terrain and vehicle, protuberences on the drum extending between the vehicle and the simulated-terrain for vertically upwardly accelerating the vehicle such that the forward-portion thereof pivots upwardly, or ''''wheelies,'''' about its rearward-portion, and operator remote control steering linkage to steer the vehicle around the protuberances or preventing, or at least minimizing, vertical accelerations to the vehicle forward-portion, and a cable for rehabilitating an immobilized upended vehicle.

Nuclear reactor control rod drive assembly

Abstract: 1,214,600. Controlling reactors. UNITED STATES ATOMIC ENERGY COMMISSION. 20 Nov., 1969 [18 Dec., 1968], No. 56760/69. Heading G6C. A nuclear reactor control rod drive assembly comprises: (a) primary motor means for delivering a variable speed drive; (b) primary transmission means for delivering the output of the primary motor means; (c) secondary motor means for delivering a constant speed drive; and (d) secondary transmission means for receiving drive from the secondary motor means and from the primary transmission means, and delivering a differential output, whose direction of output and rate of rotation are a function of its relative inputs, adjustment of the speed of the primary motor means determining the direction and rate of the differential output. Referring to Fig. 1, a cold type brake 16 is engaged and physically grabs and prevents rotation of a shaft 28 extending from primary motor 14 should the power source fail. Mounted integrally on shaft 28 is a ring gear 32 in a gear system 22, which system also includes idler gears 38 and a pinion gear 34. Pinion gear 34 is mounted on the end of a shaft 36 which passes through secondary motor 18 and carries a prime drive wheel 60 which supports three planet gears 61a engaged with internal teeth 52a of a flywheel ring gear 52. Ring gear 52, which is of large mass, is mounted on a hollow shaft 54 driven by the motor 18. Planetary gear system 24 is completed by a sun gear 66 mounted on the end of a shaft 68 which extends to form a ball screw 26. A control rod is connected to the ball screw 26 by a ball nut 74. In operation both primary and secondary motors 14, 18 are running continuously and with the gear ratios properly selected for gear systems 22, 24, motor 14 operating at 30 r.p.m. and motor 18 operating at 360 r.p.m., ball screw 26 is stationary. When it is desired to raise the control rod, motor 14 is increased in speed to 30A252 r.p.m. and sun gear 66 rotates 0A05 rev. for ech rev. of prime drive wheel 60. To lower the control rod, motor 14 is reduced in speed to 29A752 r.p.m. Motor 14 is a synchronous motor and the three speeds of 29A752, 30 and 30A252 r.p.m. are true synchronous speeds based on varying the number of poles in the stator, acting upon the rotor, with a 60 c/s. line frequency. Should cold brake 16 be actuated due to power failure, shaft 36 and prime drive wheel 60 are locked against rotation and there is a 5 : 1 speed increase for a rapid shut-down or scram. In the event of a power failure causing both actuation of cold brake 16 and failure of motor 18, the energy stored in flywheel ring gear 52 is sufficient to effect rapid shut-down.

Apparatus for supplying powder

Abstract: An apparatus for supplying or transporting powder to a dispenser comprising an endless chain which is held taut between a drive wheel having a the rear surface shaped to accept the chain and turn-around wheel. To minimize strain, tension and the like, the drive and turn-around wheels are positioned to maintain the chain in a single plane. In the preferred embodiment, the motor for the drive wheel is mounted to automatically compensate for the development of any strain, tension or the like on the endless chain that would otherwise disturb the operation.

Towable drive tower for center pivot irrigation systems

Abstract: A towable drive tower for center pivot irrigation systems is disclosed herein which permits the system to be towed from one field location to another. A pair of gear boxes are selectively pivotally secured to opposite ends of the drive frame of each of the towers in the system. Each of the gear boxes has a drive wheel mounted on the output shaft thereof which may be selectively changed from a direct connection to a free-wheeling connection to permit the entire system, including the center pivot, to be towed longitudinally. A power means is connected to the input shafts of the gear boxes for driving the drive wheels. The gear boses and wheels connected thereto may be pivoted 90 DEG from their normal operating position to a towable position. The drive wheels are then disengaged from their driving connection with the gear boxes. Each of the gear cases have an extended hub which supports the outer end of the output shaft.

Roller support and drive arrangement for roller testing devices

Abstract: Support and drive means for use in apparatus for automatically inspecting the surface of bodies of rotation. The support means comprise a drive wheel and a plurality of rollers spaced therefrom. The body of rotation is arranged between the drive wheel and the rollers to rotate about its axis of rotation. Each of the rollers are independently mounted for free rotatary movement in contact with the surface of the body.

Audio visual display apparatus

Abstract: An audio and visual display apparatus which utilizes a cartridge having one or more picture transparencies surrounded by a rotatable recording disc including a drive track on one side and a sound track on the opposite side, the cartridge being insertable in a projector with the transparency in alignment with the optical axis of the projector. A drive wheel engages the drive track at three spaced points to maintain a predetermined azimuth relation between the sound track and the sensing element of a cooperating sound pickup unit. The rotatable recording disc of one embodiment having a mounting means so arranged as to permit translatory movement as well as rotary movement with respect to the transparency.

Manual labeling device

Abstract: A device for imprinting characters on a belt or the like. A body and a lever are pivotally connected with a spring normally urging them apart. A pair of closely positioned rotary character imprinting members, carried on the body, receive the belt therebetween, the belt having the characters imprinted thereon by pressing the rotary members together. Means are provided for guiding the belt between the rotary members for the imprinting operation. One wheel engages the belt to drive it in response to the rotation of a drive wheel. The drive wheel is rotated after the body and lever have been moved or pressed together. A pin is rotatably and threadably received in the lever and has an enlarged upper head with an arm which operatively engages the drive wheel. When the lever and body are pressed together, the pin initially moves together with the lever. A platform is mounted on the body and movably receives the pin. When an appendage or stop element on the pin engages the belt after a selected translational movement of the pin has occurred, the stopping of the translational movement of the pin rotates the pin causing the arm to drive the drive wheel and thereby move the wheel which engages the belt to move the same a distance for having a character imprinted thereon. If no characters are to be imprinted, the spring returns the lever to the start position without imprinting. Alternatively, the lever is continued in its movement toward the body and the stop arm on the pin passes through a suitable opening in the platform permitting continued translational movement of the pin without rotation of the arm. After the characters have been imprinted by pressing, the spring returns the lever to the start position. The stop arm passes down through the opening in the platform and the drive arm moves below the drive wheel. When the enlarged head on the pin engages the platform, the rotary movement once again occurs and the pin and the drive arm are rotated back to the initial position, the drive arm being moved without engagement with the drive wheel.

Vibrating screen, earth-classifying motorcycle attachment

Abstract: An earth-classifying motorcycle attachment for use by artifact hunters, etc., comprises a vibrating screen supported on one end by pivoted legs and on the other by an eccentric drive mounted on the rear fender of the motorcycle and connected to the drive wheel of the latter. When the attachment is not in use, the eccentric drive may be disconnected and the screen and legs folded back for transport from place to place.

Film feed mechanism for moving the film in normal and reverse directions

Abstract: The mechanism is arranged to move film between a film supply reel and a film take-up reel each mounted on and rotatable with a respective shaft. A respective drive wheel is mounted on each shaft, and a one-way clutch is interposed between each drive wheel and its associated shaft, with reversible driving means being operatively connected to both drive wheels to rotate the same simultaneously in the same selected direction. Each one-way clutch couples its drive wheel to its shaft only when its drive wheel is driven in a direction to wind film on the associated reel, and disconnects its drive wheel from its shaft when its drive wheel is driven in the direction to unwind film from the associated reel. A respective brake wheel is mounted on each shaft and is engaged by an associated brake shoe, and a second one-way clutch is interposed between each brake wheel and its associated shaft. The one-way clutches associated with each brake wheel are effective to brake the associated shaft when the latter is being rotated in an unwinding direction, and to uncouple the brake wheel from the shaft when the latter is being driven in a film winding direction.

Water borne amphibious vehicle

Abstract: A water borne amphibious vehicle having a fuselage generally formed to provide a low air resistant surface and aerodynamic stabilizers, and at least one flotation drive wheel of generally spherical shape of sufficient size and buoyancy for supporting the vehicle in water and mounted for rotation beneath the body. A plurality of drive fins are formed around the wheel extending from either side of a vertical circumference of the wheel and are constructed and arranged not to extend above a plane tangent to the surface of said wheel at any point on said vertical circumference. In one embodiment a hollow inflated flotation drive tube forms a closed loop ''''V-belt'''' drive between the vehicle motor and flotation drive wheel.

Attachable dual drive wheel

Abstract: A dual wheel is secured to a drive wheel of a traction vehicle by means of a plurality of bolt fasteners. The bolt fasteners are secured to the rim of the dual wheel by means of removable anchor lugs. The anchor lugs are attachable at predetermined locations about the dual wheel rim and these locations have a different angular spacing than the pivotal attachment of the bolt fasteners to the drive wheel rim so that some of the bolt fasteners are forwardly inclined and some are rearwardly inclined relative to a line parallel to the drive axis. Thus, some of the bolt fasteners will always be in tension when the drive is reversed, and slip between the two wheels is minimized.

Improvements in or relating to vehicles

Abstract: 1,218,741. Endless-track vehicles; vehicles for negotiating steps or stairs. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 6 Feb., 1968 [10 Feb., 1967], No. 6590/67. Headings B7D and B7H. [Also in Division B8] In a manipulator vehicle for negotiating uneven terrain and steps or stairs under remote control, a body 1 is supported by a twin-wheel steerable bogie 30 and by port and starboard endless track assemblies which are rotatable in unison about a common axis of pivotal attachment to the body by power means and are each asymmetrical with respect to that axis. Each endless-track assembly comprises a rubber track 55 entrained around a drive wheel 49 and track wheels 40, 41 and rollers 42 carried by a girder structure 39. Gear-wheels 44 secured to each girder structure 39 are driven by a common transverse shaft 45 which is connected through a gear train 47 and a torque-limiting clutch 48 to a track rotation motor 46 and is lockable by a brake to position the track assemblies in any desired attitude. Each drive wheel 49 is connected by a resilient member 52 to a drive plate 50 on a shaft 37 driven through worm gearing 36 from one of traction motors 35. V-belts 54 extend around grooves 53 in the drive wheels 49 and the track wheels 40 and rollers 42. Raised treads 58 on the tracks 55 are formed with closely-spaced transverse slits. The steerable bogie 30 has twin wheels 31 resiliently mounted thereon and is rotated about a vertical axis by a steering motor and worm gearing 32. A turret head 2 mounted on the body 1 carries television cameras 3 and a power manipulator arm 4. The turret head 2 is supported by an hydraulically-actuated manipulator post 5 rotatably mounted on the body by means of a turntable gear 6. A motor 10 for rotating the gear 6 also drives a cable drum 8 surrounding the post 5. A control and power cable 9 is fed on and off the drum 8 through a layering device 23, a fair lead 12 and a cable guide 14 carried by a spring 15 which is fitted with a sensing device 16 for controlling the speed of the motor 10 and hence the movement of the drum 5 through a variable resistor. The endless-tracks may be dispensed with and tyred wheels substituted for the track wheels shown.

Improvements in or relating to apparatus for applying coded markings to wire and like elongated stock material

Abstract: 1,248,443. Printing on wire. C. J. GEATING. 20 Sept., 1968, No. 44913/68. Heading B6C. [Also in Division H1] A machine for colour-coding a length of insulated wire 37 comprises a casing 15 supporting on each side a drive wheel 38 around which the wire is wound, wheels 21, 22, 23, 24 carrying marking pens, guide wheels 44 ... 48, 50 and a supporting wheel 39 around which the wire may also be wound. The wheels 21, 22, 23, 24 carry differing numbers of marking pens each comprising two resilient legs, 28, 29, Fig. 6 which pick up ink from ink baths 20, and as the wheels 21 ... 24 are rotated via gearing attached to drive wheel 38 the legs 28, 29 are forced apart by the wire 37 and leave a ring of ink on the wire. The guide wheels 44 ... 48 are formed with notches 51 so that these wheels clear the newly inked rings as the wire is pulled through the machine. All the wheels 21 ... 24, 39, 44... 48, 50 are geared to the drive wheel 38. In an alternative embodiment, Fig. 8, the ink is contained within the wheels carrying the marker pens, the wheels being filled through a hole closed by a cap 57 and the ink being applied to the wire by a pad 59 of felt, rubber, or resilient plastics. In this latter case if a complete ring is required on the wire two similar wheels are used the wire passing between them. The pad 59 may be replaced by a row of holes for marking the wire with dots. In an alternative embodiment of machine (Fig. 12, not shown) the guide wheels 44... 48, 50 are replaced by an endless belt having ridges on its surface to support the wire. In this embodiment the wire is drawn vertically through the machine, the ink baths being positioned beneath the marker pen wheels, the marker pens being detachably secured to the wheels by screws. The marker pens may be fed by intermediate rollers (72, Fig. 12, not shown) dipping in the ink baths in this embodiment, and the drive wheel may be constructed so that the width of the groove for guiding the wire may be varied.

Motor driven map viewer and tracking device

Abstract: A device to aid motorists in determining their position on a highway map includes a freely supported globe having a map of the area being traveled. The globe is moved by a motor driven magnetic drive wheel which tracks a route path or film traced on the selected route with a marker containing a supply of paramagnetic particles in a fast drying liquid or a paste carrier which is applied to the selected route with a marker prior to initiation of the trip. A motor speed control knob with a pointer and associated scale with vehicle speed indicia is pre-set or periodically adjusted to move the globe at a speed related to the scale of the map and corresponding to the vehicle speed to maintain the vehicle position on the route path in registry with a position indicating pointer on a magnifying viewing window.

Vehicle drive wheel

Abstract: 1,256,331. Vehicle drive wheels. USTAV PRO VYZKUM MOTOROVYCH VOZIDEL. 6 Feb., 1970 [17 Feb., 1969], No. 5781/70. Heading B7H. A vehicle drive wheel has connected between the rim 5 and hub I thereof a series of independent piston and cylinder assemblies 3 separately connected to control mechanism in the hub I which controls distribution of a pressurized' liquid or gas to the chambers in such a way that the resultant pressure at the ground contact surface of the wheel lies outside the vertical plane through the wheel axis. In Fig. 2 the assemblies 3 are connected to the hub 1 and rim 5 by pin joints 2, 4 so that the assemblies 3 locate the rim axially of the hub, and one assembly 3 1 is rigidly connected to the hub 1 to retain the elements in their correct dispositions. In Fig. 5 pairs of arms 9, 11 are connected between the hub 1 and rim 5 to locate the rim axially of the hub; and one inner arm 9 1 is rigid with the hub 1. The rim 5 may be flexible so that it assumes an oval shape in use, and reinforcing shims 7 are provided where the assemblies 3 are connected to the rim.

Intermittent belt drive for dough depositing machine

Abstract: This disclosure relates to depositing of flowable materials such as cookie dough, jams, and the like, the depositing being carried out by forcing the flowable material out through an effluent port of a hopper onto a continuous belt which is moved intermittently between each depositing cycle. The belt is intermittently moved by a drive wheel, which continuously drives a portion of the belt, remote from the depositing hopper, and a pair of reciprocating rollers which move with the drive wheel during a first time interval to take up the slack generated by the drive wheel, and to move against the drive wheel movement at a second time interval to move the belt beneath the depositing hopper.