Showing papers on "Pulley published in 1972"

Orthogonally deflectable endoscope

Abstract: A device for controlling movement of a plurality of cables including support means, a rotary first shaft and shaft means which are carried by the support means, the shaft means consisting of telescopically arranged second and third shafts which are rotatable about a common axis that is normal to the axis of the first shaft. The device also includes a pair of coaxial pulleys, one of the pulleys being secured to and rotatable with the second shaft and the other being secured to and rotatable with the third shaft. Each pulley is equipped with a pair of cables that are secured thereto and partly and oppositely wound thereon. Coupling means connect the first shaft to the shaft means and effect rotation of the shaft means and the pulleys in response to rotary movement of the first shaft about its axis and/or bodily movement of the first shaft about the axis of the shaft means.

Medical examining table

Abstract: A medical examining table apparatus having a plurality of rollers connected to a framework with an endless belt riding on the rollers. The framework may be incorporated into a table or placed on top of an existing table with the endless belt being motor driven by the operator. Paper or other sheet material is fed over a portion of the belt between a feed roller and a takeup roller actuated by the movement of the belt through two pulleys and a belt drive and provides a protective sanitary cover for the belt.

Electric vehicle having backbone containing tray of power cells

Abstract: An electric vehicle of adequate performance and range and of low cost uses a long tray of batteries easily rolled into or from a housing which also comprises a structural backbone of the car. The body provides useful space, such as a passenger compartment on both sides of the backbone, extending down to about the level of the bottom of the backbone, thereby keeping a low center of gravity, and compactness for low wind resistance. The steering wheel is on a swing-arm standing out laterally from the backbone, the backbone supporting the steering shaft in a position not "aimed" at the driver. The steering arm swings out of the way to facilitate access, and in one form of the invention the body top swings open and there are no side doors. Separate V belt drives from the motor through automatic speed-changing pulleys for each side minimize current draw on start-up and acceleration, maximize performance, ensure driving both drive wheels in slippery weather, and permit differential wheel speed on turns. Independent suspension of the drive wheels ("knee action") without universal joints is achieved by using the flexibility of the V belts to permit the driven pulley to rock out of alignment with the drive pulley.

Arm and leg push pull type exercising device

Abstract: A portable exercise apparatus that has hand grips attached to opposite ends of a cable for reciprocation during an exercise. The hand grips are mounted on a separate cable reeved over a pulley. The apparatus also has, attached to the opposite end of the cable, straps that are attached to the feet of a user, which also are reciprocated during an exercise. The straps are attached to a separate cable reeved over a pulley.

High-speed printer with drift compensated cable for carriage

Abstract: A high speed printer in which the carriage carrying a printing wheel is coupled to a servo controlled driving motor having intermittent motion. The motor drives a helically grooved pulley which has attached to it left and right cable segments of equal length. The other ends of the cable segments are attached to the movable carriage. During movement of the carriage the total length of each cable segment remains constant and equal and provides protection against temporary mechanical drift.

Weight lifting exercising device

Abstract: A physical exercise equipment, in the form of a pulling apparatus, having a weight, to which a string is attached, which is reeved over a number of pulleys, and a hand grip at the free end of the string. At least one of said pulleys is a displaceable lockable sheeting pulley, through the displacement of which the length of a looped portion of the string and accordingly also the length of the free end portion of the string is adjustable. The height of the sheeting pulley may be read on a scale.

Apparatus for inverting mailing envelopes

Abstract: A housing is disclosed having upper and lower spaced pulleys at each end. A pair of endless belts are provided, with each belt being operatively connected between an upper pulley at one end and the lower pulley at the other end. The belts are each provided with a single twist between the ends thereof. A mailing envelope inserted between the pulleys at one end will be engaged by the belts which are being driven to thereby carry the envelope to the other end. The envelope is inverted as it is carried by the twisted belts.

Driving device for powered vehicles, and more particularly to lawn-mower vehicles

Abstract: The driving device includes a pair of coaxial driving pulleys, of respective different diameters, driven directly by the motor of the vehicle, and a driven pulley connected to a shaft in turn connected, by respective coupling means, to a pair of rear driving wheels. The vehicle includes a dirigible front steering wheel. Each driving pulley has a respective endless belt trained therearound and arranged to drive the driven pulley. A single control lever is pivoted, intermediate its ends, for swinging about mutually perpendicular first and second axes, the first axis extending transversely of the vehicle and the second axis extending longitudinally of the vehicle. The lower, or operating, end of the single control lever is connected to a pair of tensioning pulleys each cooperable with a respective endless belt. When the lever is swung, from a neutral position, in one direction about the first axis, one endless belt is tensioned to drive the driven pulley and, when the lever is swung in the opposite direction about the first axis, the other endless belt is effective to drive the driven pulley. On one embodiment of the invention, each endless belt drives the driven pulley at a respective different forward speed and, in another embodiment of the invention, one endless belt drives the driven pulley at a respective forward speed and the other endless belt drives the driven pulley at a respective reverse speed. A cable, trained over pulleys, connects the operating end of the control lever to the dirigible wheel so that, as the control lever is swung in either direction about the second axis, the dirigible wheel is steered in a corresponding direction. Link means connect the single control lever to the driven axle to shift the same paraxially and, responsive to the control lever being swung to make a tight turn, the linkage means, through the driven shaft, disengages the coupling means connecting the driven shaft to the rear driving wheel then on the inside of the tight turn.

Composite v-belt pulley and method

Abstract: A novel composite V-belt pulley construction for use with automotive V-belts and the like; and, a novel method of manufacturing the composite V-belt pulley.

Variable speed belt transmission

Abstract: The subject transmission has a casing with spaced pulley elements composed of sets or pairs of cone-faced disk sections. The sections of each pair are in opposed relation and supported for simultaneous rotation about axes disposed in predetermined angular relation. One pair of disk sections is adapted to be power driven, a Vee belt having a predetermined compressibility with spaced lobes on the inner sides being trained around the sets of pulleys and transmitting rotary movement from the power driven set, hereinafter designated ''''the driving set,'''' to the other driven set. One disk section of each pair is axially movable toward and away from the other disk section to change the effective diameters of the pulleys and vary the speed ratio between the driving and driven pulleys. Through use of the angular rotational axes arrangement high friction materials, such as polyurethane on brass, may be used which permits a reduction in the belt frictional surface area, for a specific belt tension, and consequently the use of smaller pulleys.

Automatic belt tensioning device

Abstract: An automatic belt-tensioning assembly for drive systems including a motor driving another device by means of a belt and pulleys, in which the motor and the driven device are mounted for relative movement, and an adjustable spring assembly urges them apart so as to provide a pre-settable tension in the belt.

Rod entry guide

Abstract: Mechanism consisting of a large driven pulley and a plurality of small rollers aligned along about 90* of the periphery of the driven pulley for changing the direction of rolled rod coming from a rod mill from horizontal to vertical for delivery to a laying reel or other rod collecting mechanism. The small rollers in one form are carried by pivoted arms mounted on a support and are individually spring-pressed toward the driven pulley permitting acceptance therebetween of the oncoming rod and the application of correct pressure against the rod as it changes direction from horizontal to vertical. In another form, the small rollers are carried by the links of a chain extending along the driven pulley perimeter. The chain is spring-loaded to permit entry of the rod and between the pulley and rollers.

Snowmobile engine and torque converter mount

Abstract: A mounting structure for the engine and torque converter of a snowmobile, which makes the engine and torque converter a separate unit. The engine-torque converter unit is then mounted to the frame of the machine through vibration isolation bushings. The unit mounting eliminates misalignment of the torque converter drive belt. The mounting also reduces fatigue failure of snowmobile chassis because both the drive and driven pulleys are connected to the engine, and the chassis does not have to carry the high belt load as is required when the pulley forming the torque converter is separately mounted from the engine.

Power transmission belt and method of making

Abstract: A power transmission belt and method of making the same of the type having longitudinal ribs that run in grooved pulleys which comprises a tension carrying section and a compression section, characterized by having a sheet member made up of one or more plies selected from a woven fabric, a rubberized bias fabric, a fabric composed of a fiber reinforced film of rubber and the like, hung in a catenary suspension within the compression section of the belt.

Anti-pounding device mounted on a boat for maintaining a cable at a given level above an underwater bed

Abstract: An anti-pounding device is provided to prevent the relative movement generated by waves to be transmitted to a tool. A system of pulleys is arranged on a carriage that is fixed to a guide path. A power winch is connected through a pulley to the carriage and accordingly, to a suspended tool to eliminate the relative movement of the boat. The arrangement of pulleys with a movable support can be connected to a tower or crane in a similar fashion with a compensation bar.

Conveyor with metallic mesh belt distortion compensating means

Abstract: A moving belt which is tubularized and detubularized or otherwise shaped as by moving it through right angle turns is relieved of induced stresses and strains by passing the belt over a belt contouring device such as a set of coaxial pulleys of varying diameters with a preselected profile such that it distorts the belt in a manner which compensates for the distortion of the previous tubularization or the like.

Pack frame having pulley adjusting straps

Abstract: This invention is concerned with a strap and pulley assembly mounted on a back pack frame A back pack frame is a device that hikers employ to carry a load of supplies and/or equipment on their back On the lower side of each of the frame members are mounted pulley assemblies The straps that connect the frame to the person pass through the pulley assemblies and fasten to the front of the person''s body With this invention, the weight on the pack is no longer carried solely on the back and shoulders, but the weight is more evenly distributed to other parts of the body The pulleys have means for locating them in order to conform to the person''s configuration There is a separate bracket for locking the pulley means into fixed positions

Multi-stage control for torque converters in engine driven vehicles

Abstract: A method and apparatus wherein a variable sheave V-belt torque converter, particularly suitable for use with engine driven vehicles such as snowmobiles or the like, is controlled so that a wider spread is obtained between the engine speed at the time of belt engagement and the engine speed at the time of completion of the shift. Belt engagement occurs at an engine speed relatively close to idle speed, and shifting operations are delayed until about a speed corresponding to that of maximum engine torque. Completion of shifting occurs at about a speed corresponding to the speed of maximum engine power. This belt engagement and shifting control, which improved acceleration and climbing ability of an engine driven vehicle such as a snowmobile, is provided through multi-stage resilient control of the operation of centrifugal clutch shoes engageable with the movable pulley section of the torque converter. Such control may be accomplished through the use of a plurality of garter springs, or a plurality of compression springs.

Apparatus for seaming the edges of glass sheets

Abstract: Apparatus for seaming glass sheets having curved or irregular edges precut to the desired outline. The glass sheets are conveyed along a substantially horizontal path between two pairs of seaming units located at opposite sides of said path. Each unit employs an endless, flexible, abrasive belt disposed transversely at an angle to the conveyor means. The belt of one unit of each pair engages the upper corner of the adjacent peripheral edge of the glass sheet, while the belt of the other unit of the same pair engages the lower corner of the same edge of said sheet. The inner loop of the belt is trained about a pulley mounted to rotate about a substantially horizontal axis, while the outer loop of said belt is trained about a pulley driven about an axis inclined to the vertical. Each unit is mounted to swing as a pendulum toward and away from the path of travel of the glass sheets to follow the outline of said sheets, while the belt thereof is free to slide simultaneously along said inclined pulley, said movements of the belt being initiated and controlled by the upward thrust of the glass sheets upon the belt as said sheets move progressively past the same.

System for securing an annular member to a shaft for torque transmission therebetween

Abstract: An annular member, such as a flywheel, pulley, sprocket wheel or disk, is secured to a shaft for torque transmission therebetween by a hub sleeve having an internally smooth, circumferentially continuous nonsplit configuration adapted to smoothly fit over the shaft. A doubly-conical compression ring is seated on the sleeve which is composed of steel and is elastically compressible. The compression ring is clamped between a pair of annular thrust rings having similar conicities and provided with equispaced bores through which bolts are threaded to draw the thrust rings together and urge the sleeve under radial compression against the shaft. When the torque capacity of the system is M, the axial compression force S is established such that the relationships S 2.3 M/(d-20) or S 3 M/(d-20) result, where d is the diameter of the shaft. Under these conditions, the sleeve is elastically deformed in a circumferentially undulating pattern and elastically deforms the shaft in a corresponding manner to bring about a mating noncircular fit between the sleeve and shaft to prevent slippage.

Belt conveyor apparatus

Abstract: PROBLEM TO BE SOLVED: To take out a pulley forming a turnback portion of a belt to outside a side plate connecting both of conveyance sections without removing the side plate when removing the pulley. SOLUTION: As to a pulley unit, a top pulley thereof is removed when a conveyor belt 70 is detached, the top pulley is removed when the conveyor belt 70 is attached, and, after the conveyor belt 70 is attached, the top pulley is mounted in such a manner as to press the conveyor belt 70 journaled on a bottom pulley in the direction of the first conveyance section 10. When the conveyor belt 70 is loosened or cleaned, a return roller 50, the top pulley of the pulley unit, and a head pulley of the first conveyance section 10 are removed from a conveyor frame and a sub-frame, respectively. A bend pulley is removed from the side plate by removing a bend pulley support screw and taken out to outside the side plate through a window hole. The conveyor belt 70 is drawn out by pulling a belt winding-back portion from sides the first conveyance section 10 and the second conveyance section 20. COPYRIGHT: (C)2011,JPO&INPIT

Baseball projecting machine

Abstract: A baseball training machine having a frame and a ball propelling assembly mounted on the frame for projecting balls therefrom. The frame is pivotably mounted at a front portion on a supporting base member. An adjustable brace releasably couples the rear portion of the base to the frame. The brace includes a threaded rod which, when rotated, changes the effective length of the brace to raise or lower the rear portion of the frame to adjust the angle of projection of the balls. Further, the base has a plurality of spaced retaining devices for receiving a lower portion of the brace in various adjusted positions so that the rear portion of the frame can be adjusted through a wide angle with respect to the base for projecting ground balls batting practise, fly balls, and pop flies. The propelling assembly includes a pair of wheels, each of which is independently driven by a constant speed motor through a variable drive mechanism including an idler pulley and a drive belt. The idler pulley is supported on the frame and adjusted by an adjusting rod to vary the tension of the belt and the speed of the wheel. A variable diameter pulley is also employed on the motor drive shaft or on the propelling wheel to change the speed of the belt as the tension of the belt is changed.

Easily installed belt

Abstract: A temporary replacement for a car endless fan belt, the device consisting of a single length of durable rubber belt that can be stretched to fit around a pump pulley and a crank shaft pulley, so that the car can proceed to travel in case its regular fan belt is broken, thus permitting the automobile reach a Service Station for assistance, one end of the rubber belt having a tubular wire mesh secured therearound and extending therefrom, while the other end of the belt has a male member secured thereto which has a series of barbs projecting radially therefrom, so that when the male member is fitted in the tubular wire mesh on the other end of the belt, the barbs hold the ends securely together.

Transmission belt structure

Abstract: A trapezoidal shaped power transmission belt of high longitudinal flexibility having a tension section, a compression section of less thickness than the tension section and a neutral axis section between the tension and compression sections. When the belt operates in grooved pulleys the greatest proportion of the driving contact is provided by the tension section rather than by the compression section. The pitch line of the belt is disposed below the transverse centerplane of the belt and the tension section includes a plurality of relatively deep transverse grooves or notches to increase the belt''s flexibility. The belts are particularly useful in compact variable speed drives equipped with relatively small diameter pulleys.

Variable power ratio device

Abstract: A variable ratio drive device including a rotatably supported drive shaft having a pair of axially shiftable pulleys rotatably fixed thereto, with the pulleys being of different diameters and coaxially fixed to each other, and wherein each pulley includes a grooved rim so as to form a sheave. The common edge of the juxtaposed pulley sheave elements include a cutout or flat portion detailed to cause a belt to be shifted from one pulley to the other pulley in response to an axial shifting and rotary movement of the pair of pulleys. The variable ratio drive device includes lever means for effecting axial shifting movement of the pair of pulleys. An idler pulley is operatively associated with the pair of pulleys for maintaining tension on a drive belt operatively supported on a selected one of the pair of pulleys. The variable ratio drive device is operable to either receive driving power through the drive shaft and for delivering variable output drive to a driven shaft, or is operable for receiving drive to the pair of pulleys and for delivering variable output drive to the supporting drive shaft.

Tape reciprocating drive type tape recorder

Abstract: A tape reciprocating drive type tape recorder has two pulleys having a suitable degree of frictional resistance and rotatably mounted on the opposite ends of a swinging arm in a manner to confront two reel bases and means for transmitting rotational power in a regular direction or reverse direction to the two pulleys. The swinging arm swings in accordance with the rotational direction of the two pulleys, whereby, in accordance with the rotational direction thereof, one of the pulleys presses against the corresponding reel base to transmit rotational power thereto. By merely changing over the rotational direction of the pulleys, the two pulleys can be selectively caused to press against the reel bases.

Belt drive apparatus

Abstract: A belt drive apparatus having a clutching pulley assembly held in the engaged position by a spring wherein a second spring opposes the first spring during engagement to allow smooth engagement of the belt.

Equipment for laying or recovering submarine cables

Abstract: Apparatus for laying or recovering a submarine cable in which the cable is fed to or from a storage device by a pair of drive pulleys intermediate the storage device and a pulley for guiding the cable into the water, such pulleys rotating in planes at an angle to each other, having braking and hydraulic motor units for braking or driving them and being mounted on a frame permitted slight oscillating movement in the direction of the cable laying. Pressure wheels maintain the cable in the driving pulley races, and the cable extends from the storage device to and part way around the drive pulley farther from the storage device, then to and part way around the other drive pulley and then to the guide pulley. The braking units are water cooled and air operated and a hydraulic system controls the hydraulic motors. A dynamometer measures the pulley supporting frame movement, and instrumentation for indicating cable tension, speed and movement and braking pressure is included.

Crown-shaped pulley lagging

Abstract: Pulley lagging comprising center and end members formed for mounting in end-to-end relation on and across the peripheral surface of a pulley parallel to the pulley axis. The members are formed with belt traction material having a constant thickness over the length of the center member and having an equal thickness at the abutting ends of the end members but tapering over the lengthwise dimension of the end members to a lesser thickness at the outer ends thereof.

Tracking mechanism for belt sanders

Abstract: A tracking mechanism for centering a sanding belt of a belt sander, wherein a linkage means is connected to the frame of the sander. The linkage means carries a mounting bracket to which an idler pulley is rotatively connected. The linkage means has a plurality of links pivotally interconnected to each other to form a frusto-polyhedron whose vertex defines a pivot point disposed forwardly of the idler pulley, so that when unbalanced forces act on one side of the idler pulley, the linkage means will be caused to rotate about the pivot point to produce a turning movement thereabout, and cause the opposite side of the idler pulley to counteract the initial forces by shifting and restoring the idler pulley to a balanced position. The pivot center line intersects a plane passing through the center line of the sanding belt, which plane is substantially perpendicular to the axis of the pulley. This location of the pivot point also will serve to aid tracking of, and limit runoff of the sanding belt from the pulley.