Abstract: A power transmission chain for a sprocket drive is constructed of at least two types of toed links, one engaging sprocket teeth with their outside flanks and the other engaging sprocket teeth with their inside flanks. The links are assembled as uniform sets of links of the same type, in a regular or random mixture of sets. To distinguish the types of links, one type has a curved or arcuate back and the other a flat, generally planar back. An improperly located link can be easily detected in the assembly of links.

Abstract: A power transmission chain for a sprocket drive is constructed of at least two types of toed links, one engaging sprocket teeth with their outside flanks and the other engaging sprocket teeth with their inside flanks. The links are assembled as uniform sets of links of the same type, in a regular or random mixture of sets. To distinguish the types of links, one type has a curved or arcuate back and the other a flat, generally planar back. An improperly located link can be easily detected in the assembly of links.

Abstract: A pump-mechanical seal assembly in which the setting of the mechanical seal is maintained when the pump impeller's position is adjusted relative to the pump housing, and means to accomplish this objective.

Abstract: A rocker joint for a drive chain or a chain-belt comprising a pair of joint members of like cross-section and having front surfaces which rock or roll on one another. The joint members each have a front surface defined by a first radius and a back surface defined by a second and a third radius both progressively smaller than the first radius. A rocker joint pair of members fits into each group of aligned apertures in the interleaved sets of links to join the links and permit articulation of the chain. The link apertures are generally round and have a surface substantially engaged by a back surface of a pivot member.

Abstract: A variable pulley transmission in which each pulley is constructed of a pair of flanges coupled to respective shafts, at least one flange of each pair being axially movable relative to the other flange of the same pair, the movable flange being coupled to its shaft by an external spline operative associated with the flange meshing with an internal spline on a drive member coupled to the shaft. The spline connection permits the flange to move axially while maintaining the drive coupling.

Abstract: A two speed ratio accessory drive system especially for use with an automotive engine in which the accessories are driven either from the engine crankshaft or from the engine camshaft. A clutching system controlled to respond to needs and/or operating conditions is used to change the speed ratio between a high speed ratio and a low speed ratio.

Abstract: A composite load block for a power transmission belt constructed of at least one endless band and especially adaptable for use in a variable pulley transmission, comprising an assembly of first and second block members, the second block member embracing parts of the first block member and providing an elastically yielding component between the endless band and the first block member and having a lip portion received in a notch in the next adjacent composite load block, and the power transmission belt so constructed.

Abstract: A chain-belt adapted for use in a pulley drive system and comprising a plurality of connected ranks or sets of interleaved links having generally trapezoidal load blocks between adjacent pivot means which join the adjacent ranks or sets of links together to permit articulation of the chain belt. The load blocks are of generally laminated construction of a plurality of plates and resilient means are located between adjacent plates in at least some of the load blocks. Preferably an elastomeric material such as rubber is chosen as the resilient means and each load block incorporates the resilient means.The structure is effective to reduce noise generated upon engagement and disengagement of the chain-belt with the pulley flanges when compared to a chain-belt of connected ranks of links and with laminated load blocks therein but without the resilient means.

Abstract: A centrifugal pump assembly comprising one or more bowl castings each housing an impeller and also two or more individual fluid passageways for the flow of fluid discharged by an impeller to the next impeller, the passageways having some exterior walls defining the exterior of the assembly. By changing the number of the individual passageways, the specific speed of the pump, i.e., the ratio of the amount of energy imparted to the fluid and the amount of fluid being pumped, can be changed.

Abstract: A process for preparing an asymmetrical pentaerythritol compound containing both trivalent and pentavalant phosphorus. The process involves merely bubbling oxygen into a solution containing 3,9-dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5,5] undecane.

Abstract: A variable diameter pulley assembly for use with a power transmission belt and adapted to be connected to a shaft comprising opposed sets of axial and radial movable generally triangular or trapezoidal-shaped flange members, the sides of opposed sets being in substantial engagement to provide at all pulley diameters a generally cylindrical and continuous surface for belt engagement. A pair of axially movable hubs supports the flange members, and each hub has guides for guiding the flange members in their axial and radial movements. A central cam member with conical cam surfaces may be provided which cooperates with cam follower surfaces of the flange members whereby axial movement of the flange members causes radial movement thereof.

Abstract: An improved mechanical seal assembly comprising a generally stationary seal ring and rotatable seal ring, each with opposed seal faces, the stationary seal ring being connected to a stationary housing by elastomeric keys. One of said seal rings is constructed of a material such as a carbon graphite composition which is more brittle than the other which is constructed of a much harder less brittle material. As in most seals of this character, the seal faces are lubricated by a fluid film flowing radially across the opposing faces. In the absence or upon failure of the film, the rings can seize, generally resulting in a breakage of or other damage to the more brittle seal ring. However, the elastomeric connecting keys provide a cushion for absorbing dynamic forces in the tangential direction, to distribute bearing loads substantially evenly and to allow radial deflections of the stationary seal ring relative to the housing due to thermal and pressure effects.

Abstract: A mechanical seal assembly having a rotatable sealing ring means mounted for rotation on a shaft and a stationary sealing ring means connected to a housing flange, the sealing ring means having opposed sealing surfaces. The assembly also has means urging the sealing surfaces toward one another. The rotatable sealing ring means is of stepped configuration and constructed as an integral pair of equal axial length ring portions, one portion having its inner and outer diameters larger than the respective diameters of the other. Generally, the ring portion having the smallest inner and outer diameter is that ring portion having the sealing surface--one that opposes the sealing surface of the stationary sealing ring means.The degree of deflection of the sealing surface because of hydraulic load or pressure can be selected by selecting the diameters of the pair of ring portions, i.e.

Abstract: A power transmission belt especially adapted for use in variable pulley transmissions and comprising a continuous metal containing band with attached drive blocks. The drive blocks are formed from sheet metal stampings and formed by sheet metal bending procedures.

Abstract: A power transmission belt especially adapted for use in variable pulley transmissions and comprising a continuous metal containing band with attached drive blocks. The drive blocks are formed from sheet metal stampings and formed by sheet metal bending procedures.

Abstract: A mechanical seal assembly, especially for use in a slurry pump in which the seal rings are resiliently urged into sealing relation by at least one elastomeric assembly loaded in shear. The preferred embodiment is constructed as a cartridge for installation and removal as a unit but it may also be constructed for installation in situ.

Abstract: A mechanical seal assembly comprising stationary rotating seal rings having opposed faces which remain parallel to one another during operation or defect to become convex in order to provide a convergent path for leakage across the opposed faces.

Abstract: A chain tensioning device comprises a pair of arms 2, 3 which are pivoted together and urged apart, so that the arm 3 applies a tensioning force to a chain, by means of a block 9 biased by a compression spring 10 axially along the arm 2 in conjunction with links 14 coupled between the block 9 and the arm 3 and serving to pivot the arm 3 relative to the arm 2, in response to such spring biased axial movement of the block 9. A catch disc 12 and rod 6 arrangement is provided to prevent return movement of the spring loaded block 9 and hence collapse of the arm 3 under load reversals of the chain.

Abstract: A multi-part sprocket and a multi-speed transmission comprising at least a pair of the sprockets, the sprockets each comprising an external toothed drive member surrounded by a two part externally toothed ring member, one part of which is axially movable with respect to the other with both parts having internal teeth meshing with the external teeth of the drive member. Another similar two part member surrounds the first; the similar member having external and internal teeth.A chain connects a pair of sprockets, the chain meshing the external teeth. The speed ratio between the sprocket can be changed by axially moving parts of the ring member. The ring members have beveled surfaces facing one another to guide the chain during a speed ratio change.

Abstract: A power transmission adapted to be connected between a prime mover and a driven means which comprises a variable pulley drive comprising drive and driven pulleys connected by a belt, each having at least one flange axially movable with respect to the other. The pulleys continously rotate when the prime mover is operational. The output of the prime mover is directly connected to the pulley drive. The prime mover may be an automobile engine, the driven means may include the wheels of an automobile. A speed-responsive friction starting device with means to shift between neutral, forward and reverse is connected between the driven pulley and the driven means. Shifting of a dry, i.e, non-lubricated, belt on the pulleys when the speed ratio is changing is enhanced because of the continuous driving of the pulleys. Also, because the direction of the rotation of the pulleys is always the same, shifting between forward and reverse is enhanced, this being true for any type of belt.