Abstract: A belt grinder having a casing, a drive pulley supported in the casing, a contact pulley mounted on an arm extending from a forward opening in the casing, and endless belt trained about the pulleys, a pneumatic motor housing projecting into the casing, passages in the housing communicating with an annular chamber in the casing, and a fitting secured to the housing having an exhaust passage in communication with the interior thereof, a nozzle member located in the exhaust passage and a slotted passageway communicating with the annular chamber and with the outer periphery of the nozzle member.

Abstract: There is disclosed in a chain hoist system or the like, an improved chain travel stop device which is readily attachable to and positionally adjustable on either the load carrying chain or the "slack chain" depending from the load hoisting or pulling machine. The device is positionable with improved facility at any preferred location along the length of any such chains, so as to limit the chain travel relative to the hoist/puller machine.

Abstract: A universal electrode holder having a holder body including a top face, a bottom face, perpendicular sidewalls and end walls, wherein one side wall is stepped to define offset lower and upper surface portions joined by a horizontally disposed connecting surface portion; a reference plate having a reference surface disposed to extend transversely of the lower and connecting surface portions; an indexing plate having an indexing surface and being slidably mounted on the lower and connecting surface portions to selectively vary the distance between the reference and indexing surfaces; a clamp device fixed to the holder body for releasably clamping an electrode of rectangular cross section in a mounted position, wherein its opposite edge surfaces engage with the reference and indexing surfaces, its upper and rear side surfaces engage with the connecting and lower surface portions and its front side surface engages with the clamping device; mounting and aligning means including a plurality of ribs depending from t

Abstract: A pair of guide wheels are provided for a manually manipulated abrading device of the endless abrasive belt variety for preventing the gouging of the surface of a workpiece when a raised imperfection, such as a weld bead, is abraded by operation of the belt to lie flush with such surface. The guide wheels define an annular and radially outwardly opening groove in which a tire formed of a relatively non-deformable material is supported to undergo relative radially directed displacements incident to rolling of the tire along the surface of the workpiece. The guide wheels are adjustable to vary the width of the groove for purposes of controlling the extent of radially directed displacements of the tire, and thus the position of the belt relative to the surface of the workpiece.

Abstract: There is disclosed an improved upper-stage rocket motor/engine assembly of the type which comprises in combination with the basic rocket engine/motor and rigid or fixed nozzle thereof one or more telescoping nestible-extendible truncated cone-shaped collars of rigid structural form, and a further deployable perimetrically attached skirt formed of sheet metal or the like which is pleat-folded inwardly from an initial truncated cone-shaped configuration into a generally planar configuration. The assembly when inoperative is stowed within the basic engine/motor and nozzle profile; but in association with engine/motor firing the extendible components thereof are progressively deployed in accord with an improved technique to provide the desired extended length and plume exiting diameter/area nozzle effect.

Abstract: An improved method and apparatus for supporting an auxiliary transmission unit between the drive shaft and the differential pinion shaft via the rear universal joint, including a bracket assembly mounted to the casing of the transmission unit and to a preloading resilient device mounted to each of the drive axle housings; such pretensioning device including a resilient material sleeve having one portion immovably fixed to the bracket assembly and another portion immovably supported by the drive axle housings, the bracket assembly being tightened to the resilient sleeve in a position whereat the drive shaft is raised with respect to the differential pinion shaft and to the drive axle housings whereby as the same is lowered with respect thereto a torsional bias is induced in the resilient member which is transmitted to the bracket assembly to provide an upward, lifting force to the auxliary transmission unit.

Abstract: An improved coin operated lock unit and arrangement for mounting same is characterized in that the lock unit is removably mounted within a lock unit mounting post through a rear surface thereof, which is exposed for lock unit insertion/removal purposes only when the door of an adjacent storage compartment is in an unlocked condition; the mounting post having apertures in its front and side surfaces disposed for alignment with at least the key operated custodian and patron locks, the coin chute and the lock bolt of the lock unit, when disposed within the mounting post. Structure under the control of the custodian lock is employed to selectively, releasably retain the lock unit within the mounting post and to control the patron lock for door unlocking/locking purposes, while the patron key is removed from the patron lock.

Abstract: A cabinet construction is disclosed featuring the utilization of spring-biased hinge pins for removably mounting one or more doors for swinging movement between cabinet storage compartment closed and open positions in combination with a security device for normally preventing access to such hinge pins for door removal purposes. The invention additionally features a novel door/hinge assembly.

Abstract: A portable belt grinder having a casing, a drive pulley supported in the casing, a contact pulley mounted on an arm extending from the casing, an endless belt trained about the pulleys and a belt tensioning assembly having a roller eccentrically mounted on a manually rotatable rod, a camming surfaced plunger coacting with the roller and a spring interposed between the arm and the plunger. A cover is pivotally mounted on the casing having an aperture which coacts with a latching button rotatably fixed to the casing and having a vertical axis slightly spaced from the vertical axis of the aperture.

Abstract: A cord weight assembly for drapes, blinds or the like having a generally cylindrical housing formed of two halves cooperating to define reversibly located end cavities in which a cord may be selectively, releasably attached and a central weight receiving cavity wherein the end cavities contain interfitting bosses and tubular members for securing the housing halves together and selectively engaging with the cord; and a resilient, deformable skirt fitted about the lower end of the housing and including a flexible flared base extending beyond the periphery of the housing for making non-damaging contact with adjacent structure in the event the cord weight assembly is swung out of its normally plumb position.

Abstract: A conveyor construction is disclosed as having particular utility in effecting simultaneous mixing and transporting a relatively viscous charge of finely divided fruit and pressing aid for supply to a fruit juice extraction press. The construction features a novel mixing and transport paddle formed by bending a relatively thin metal plate to define separate mixing and transport surfaces.

Abstract: A chain grab hook (10) which engages the cross-over link (30) in a generally flat lay or generally horizontal position is disclosed. The free-end portion (14) of the grab hook (10) includes a support surface (40) which supports the flat face of the cross-over link (30) over a substantial length of the link and over a substantial surface area. The tip (48) of the free-end portion (14) of the hook (10) projects inwardly to provide an obstruction which tends to prevent accidental chain slide-out. The support surface (40) may be slightly angled relative to the horizontal to cause the side links (32, 36) to rotate toward the neutral fiber center (26) of the hook (10) to reduce the moment arm applied by the loaded chain on the hook.

Abstract: A bracket assembly for vertical venetian blinds having a horizontally disposed fixed support member, a pair of side rails vertically extending from the longitudinal side edges of the fixed support member, a mounting element vertically projecting from one end of the support member, a longitudinally extending slot between the side rails extending from adjacent the one end to a transverse end of the support member, a break-away apertured tab closing the slot at the transverse end, an apertured extension arm slidably mounted on the support member within the confines of the side rails and a spring clip secured to the extension arm in all positions thereof for releasably securing a vertical venetian blind trackway thereto.

Abstract: A device for precisely positioning a hoist suspended load which operates by temporarily releasing the hoist brake for a predetermined limited time period without actuating the hoist motor so that the load is lowered through a small incremental distance by the influence of its own weight. A control signal may be generated by a delay timer, a repeat cycle timer, a digital timing device or a device for detecting the degree of movement of the load carried by the hoist.

Abstract: A vane holding assembly for suspending a vertical vane formed of a pliable material from a hook of a venetian blind mechanism includes an elongated housing defining a downwardly opening cavity bounded in part by opposite side walls formed with a plurality of ribs projecting inwardly of the cavity, and an elongated vane holding bar for insertion into the cavity between the ribs; the holding bar having an elongated mounting slot for receiving an upper end of a vane in folded relation, whereby as the holding bar is inserted into the housing the opposed ribs engage and frictionally secure the folded vane relative to the holding bar. The housing is additionally provided with an upper opening permitting insertion of the hook within the cavity for connection to the holding bar.

Abstract: A carbon dioxide absorbing apparatus having a base containing adjacent inhalation and exhalation passages, a through opening or passage centrally located on the base and in communication with the inhalation passage, a gasket located on the base having a raised lip annular opening coaxial with the through opening, a cannister of carbon dioxide absorbing material resting on the raised lip of the gasket and a cover surrounding the cannister defining an annular passage therebetween which is in communication with the exhalation passage. Pins are removably provided along one or more circles of varying diameters on the base to orient the cannister in proper operative position.