Abstract: A push element for a transmission belt comprising an endless carrier packed with a plurality of such elements to run on Vee-pulleys with variably spaced side plates. The surface of the element which comes into contact with the inside surface of the carrier is of convex shape to minimize wear resulting from improper alignment of the elements in use.

Abstract: A two-speed, self-propelled dolly intended for moving and elevating a load such as, for example, a mobile home. A generally rectangular frame is supported by a pair of endless belt tracks mounted on its opposite sides. A load engaging member is raised and lowered by an elevating unit connected with the frame, including at least one power driven screw jack. A pair of drive systems, one for each belt, is provided. Each drive system includes a drive wheel rotatably mounted on the frame and engaging the associated belt track. Each drive system includes a reversible, synchronous electric motor having an output shaft which is coupled to the associated belt track by a two-speed gear box which drives the track either at a traverse speed approximately equal to the walking pace of an adult human or at a relatively slower, load-carrying speed.

Abstract: A transport roller rack highly efficient in use of power, especially suitable for photographic film developing machines. The rack combines transport rollers in staggered, non-nip forming configuration, with a power gear train having coaxial power tap-offs to clusters of roller driving gears.Each cluster has its own cluster drive gear, which is coaxially rotated by a larger power gear.Roller driving gears belonging to adjoining clusters also mesh with each other, thereby uniting these clusters into a continuous train of intermeshing roller driving gears.Also, the method of transporting film by the use of this rack.

Abstract: A tractor belt adapted to be trained over and driven and supported by sprockets in a mechanism for advancing and positioning a strip of material having hole-in-line perforations, the belt comprising a wire-cored band having perforation engaging lugs integral with and projecting from one surface of the band and sprocket engaging lugs integral with and projecting from the opposite surface of the band. A method for making such a belt.

Abstract: An endless power transmission belt having a reinforcing and tension member, such as a cord or cloth strip, to which are attached, stiffener and about which is an elastomeric material. The stiffeners for providing lateral stiffness may be finger-like, at least in parts, and adhesively attached to the reinforcing and tension member or molded therearound. The stiffening means may be individual, side-by-side parts or a continuous member.

Abstract: A machine tool, such as a hydraulic press, has a movable guard to prevent the operator's hands from being present in the vicinity of the powered operating element, such as a press tool, while the machine is operating. The guard can be actuated automatically or manually by the operator and is connected to a dump valve in the hydraulic system so that power cannot be applied to the operating element at any time except when the guard is fully closed.

Abstract: A front derailleur chain guide for a bicycle comprises a first branch and a second branch substantially parallel and joined to one another by a bridge connecting a portion of the top edges of each of the branches. An additional member is attached to the outer face of the first branch situated on the side where a smaller sprocket wheel is disposed. The additional member is fixed to the first branch and has elasticity such that it can move slightly away from the branch when the chain comes to bear against a portion of the additional member which projects forwardly of the first branch.

Abstract: An improved chain drive sprocket or the like in the form of a sprocket member. The composite sprocket member includes a metallic hub portion having T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation of the hub portion, and a toothed ring formed of synthetic resin material having an aperture formed therein with T-shaped lands and T-shaped grooves formed on the inner periphery thereof sized and shaped for close sliding coaxial engagement with the corresponding lands and grooves of the hub portion. The hub portion is preferably formed of sintered steel powder impregnated with cupreous alloy. The toothed ring portion is preferably formed of nylon. The drive sprocket may be employed in combination with the power output shaft from a motorcycle power transmission. The composite member may be slightly modified to form a composite spur gear or the like.

Abstract: A hub for mounting on different sized sanitary machinery shafts and which has a cylindrical housing, at least one end of the housing having a cylindrical opening which is concentric with the longitudinal axis of the shaft and a cylindrical hub mounted within the housing opening and sealed around its circumference to the opening, the hub having a bore therein to accommodate the shaft, and, in some embodiments, a bushing mounted within the bore to allow the hub to be adapted to different sized shafts. A closure ring is fitted within a counter-bore in the hub, the closure ring and the counter-bore both being eccentric with respect to the longitudinal axis of the shaft so that counter-rotation of the closure ring with respect to the hub causes the closure ring to jam fit within the counter-bore of the hub and effect a liquid tight seal as well as preventing the hub from moving longitudinally along the shaft.

Abstract: A torque converter includes two differentials, the cage of the first differential receiving the input shaft power and the cage of the second differential driving the power-receiving output shaft. Both differentials have their planet wheels coupled by pairs, the first group constituting a gear train providing a ratio M while the second group constitutes a gear train providing a ratio N, the ratio M/N differing from unity. The converter input shaft is rigid with the first planet carrier while the output shaft is rigid with the second planet carrier cage.

Abstract: A supported pin-type gear structure is disclosed wherein a plurality of pin-means are provided in a circumferentially and radially spaced pattern around the flat face of a supporting element. The pins extend from the face of the element, and the free ends of at least two adjacent pins are inter-connected together, such as by individual links or a continuous ring or other devices, thereby providing an internal gear-type structure.

Abstract: In an internal combustion engine having a timing system which employs a crenellated or toothed timing belt and the lubrication is carried out under a substantial oil pressure, a device for maintaining the tension of said belt as close as possible to the initial calibration value, said device comprising the combination of two resilient members acting the said means being responsive to the pressure of the lubricating oil with the intermediary of a piston moved by the pressure of said oil. Thus, the belt tension is rendered insensitive to the size variations the engine undergoes as its temperature is changed, e.g. when the engine passes from standstill to running and vice versa.

Abstract: An improved worm wheel which is capable of mating with a worm includes a base portion and a wear portion. The wear portion loosely encircles the base portion with mating teeth therebetween, there being a greater number at the interior of the wear portion than at the exterior of the base portion. The wear portion also includes an array of teeth at its outer surface for engaging the worm.

Abstract: A multiratio powershift transmission having automatic speed and torque demand responsive shift controls providing a normal shift program when the sump oil level is in the normal operating range. When the sump oil level is in an abnormal operating range, either lower or higher than the normal operating range, a sump oil level responsive control acts on the shift controls to provide an abnormal shift program preventing drive in the highest gear ratio and providing normal operation in the other gear ratio.

Abstract: A variable transmission ratio brake actuating device comprises a brake lever pivotally mounted on a frame. The frame and brake lever are each provided with a guide slot or groove which extend toward the pivot mount and intersect each other. A connector link to transmit force to a brake is always positioned at the point of intersection of the brake lever and frame guides. Pivoting of the brake lever guides the link at a distance relative to the pivot mount which decreases from the release position toward the braking position.

Abstract: A transmission including a cylindrical drive pulley, a cylindrical driven pulley, an endless belt of a suitable material and a predetermined uniform thickness, the belt being frictionally confined between the drive and driven pulleys and loosely encompassing one of the pulleys, an inner pair of cylindrical positioning pulleys mounted within the endless belt on opposite sides of the encompassed pulley, an outer pair of cylindrical positioning pulleys mounted on the outside of said endless belt on opposite sides of the other pulley, each of the inner and outer pairs of positioning pulleys frictionally confining the endless belt, and means for moving the pairs of positioning pulleys inwardly or outwardly with respect to the interior of the endless belt so as to cause the endless belt to bend partially around one of the drive and driven pulleys such that the inner and outer surfaces of the belt become respectively alternately shortened and lengthened therearound, to thereby serve as an extension of the radius of

Abstract: The invention relates to an improvement in a drum rotating apparatus which comprises an input gear, a drive train for selectively drivingly rotating the input gear about its axis in a first and in a second direction, a transfer gear meshing with the input gear and driven thereby, a shaft rotatably driven by the transfer gear and having teeth thereon, an output gear meshing with the teeth on the shaft and driven thereby and a drum secured to the output gear to rotate therewith. The improvement comprises a normally engaged coupling intermediate the transfer gear and the shaft and hydraulic disengaging apparatus which serves to disengage the normally engaged coupling to allow the drum to rotate unencumbered by the input gear and the drive train.

Abstract: A screw-nut screw coupling in which a tubular element provided with an inner helical groove is coupled to an elongate member provided with an outer helical groove by means of a number of balls mounted for rolling along an helical path defined by said helical grooves and forming a portion of an endless path for said balls to roll there along, said tubular element being formed by at least two co-axial tubular sleeves rigidly connected to one another, one of said sleeves being arranged outside the other and being provided with groove means defining a portion of the endless path and communicating with said helical path via at least one hole provided through the inner sleeve.

Abstract: The invention pertains to a hoisting device, characterized by the fact that it mainly consists of a housing to which the load is suspended, and in this housing a driving pulley consisting of two half pulleys for the cable, which is suspended from a fixed point, whereby this driving pulley is provided with means which press the cable uniformly or practically uniformly into the driving pulley over a large arc, and with means which press aforesaid half pulleys away from each other at the locations where the cable enters and leaves the pulley, in such a manner that no friction occurs when the cable enters or leaves the driving pulley, whereby this pressing apart is performed in such a manner that no or practically no increase of pressure occurs on the cable on the other side of the pulley.

Abstract: An improved gear ring for epicyclic gear trains is formed from a plurality of concentric ring elements shrink fitted to each other, whereby increased flexibility is achieved without increasing stress levels in the ring. The ring elements may be separated by a layer of elastomeric material having a low modulus of elasticity. A method of making such a gear ring is disclosed.