Abstract: Hub which may be integral with a pulley, gear, sprocket, etc. has keyhole slots extending radially from its bore into a hub body lengthwise of the hub, with a perpendicular screw and sleeve screw across said slots to compress them and reduce the hub bore opening to clamp the hub onto a shaft, and to expand such slots to release the hub from the shaft; a headless screw immobilized in threads below the slot extends into the coaxial sleeve screw above the slot having external and internal threads of different but proximate pitch, rotation of which applies greatly multiplied thrust upon the screw to push or pull the hub body below the slot; other embodiments include an internal annular slot in the hub bore compressed by an axially placed screw assembly or screw along, and diametral slots similarly compressed and expanded, and a dual thread screw with differential pitch.

Abstract: A cast bus bar clamp with perimetric ribs and a connecting web is provided. The design eliminates abrupt changes in cross-sectional area. This, in turn, provides a less abrupt temperature gradient on cooling which, in turn, minimizes nonuniform solidification which, if present, frequently causes the formation of weakening cracks. To improve the distribution of clamping pressure, the clamp is usually given a convex curvature so that when the clamp is tightened there are five pressure points. The design provides an improved strength-to-weight ratio and a more reliable and economical structure.

Abstract: Tube coupling for coupling an inner and an outer tube, wherein the inner tube extends into the outer tube and projects out of the terminal end of the outer tube: a receiving member with one sleeve portion that receives the terminal end of the outer tube to be coupled and another sleeve portion around the inner tube; a split tightening ring is held inside the receiving member, is anchored in the receiving member against shifting around in it and is squeezable against the outside of the inner tube; the split tightening ring has tabs that are squeezed together to squeeze the ring against the inner tube.

Abstract: A gear, end plate, or the like, is formed from a hard, tough plastic such as polyurethane and is locked onto a supporting shaft by means of a clamp engaging an integral annular hub formed on one side of the gear. The clamp is in the form of a metal band, the ends of which are provided with a nut and screw by means of which the band may be tightened to apply clamping pressure.

Abstract: An arrangement for supporting a railing and the like has a hollow base member, a hollow bar-shaped member telescopable over the base member, and a clamping element insertable in the base member and spreadable apart so as to spread the base member into clamping engagement with the bar-shaped member. The clamping element has two clamping portions which are partially separated from each other over a plane extending in a direction of elongation of the clamping element and are movable relative to each other in a direction transverse to the direction of elongation. Means are provided for spreading apart the clamping portion, including screws screwable in one of the clamping portions. The clamping portions each has a section outwardly projecting from the base member and adapted to be spread into clamping engagement with the bar-shaped member. The base member and the bar-shaped member have holes provided in walls adjacent to the clamping portion so that the screws may be screwed in the latter through such holes.

Abstract: A method of and means for safely releasably tensioning structural parts such as clamping members for mounting tube or ball mills and comprising drawing the clamping members toward one another by means of a tie rod bolt sufficiently to effect necessary clamping grip on the mill tube, and then disposing a spacer in clamped relation between the clamping members and further tightening the bolt to prevent loosening of the bolt while protecting the tube mill against excessive clamping stress.

Abstract: A bracket tightening device for fixing a bracket or the like on a round rod or shaft. The device uses an intermediate body formed of a resilient material which is sufficiently strong within the restorable elastic limits, one end of the intermediate body being engaged at a fixed point on the bracket, the other end being engaged at a fixed point on the rod or shaft to which the bracket is to be secured. An adjusting screw is attached to the bracket and has its front end abutting against the intermediate portion of the intermediate body.

Abstract: A first and a second element have respective abutting surfaces which together form an interface. One or more connecting members, such as screws, rivets or the like, connect the elements together. The juxtaposed sides of the elements are formed with respective matingly inter-engaging projections and recesses which resist forces that are being transmitted between the elements and act in the plane of the interface. The invention is especially advantageous for use in erecting trusses or arches of halls and other buildings, and in such a case the elements may be structural plates having the recesses and projections grouped about the locations of the respective connecting members.

Abstract: A gardening tool that includes a handle portion having a plurality of tines depending therefrom and a second plurality of tines of shorter length, which are adjustable in alternating arrangement with the longer tines. Each tine of the second plurality of tines includes two telescoping portions surrounded by a clamp with a variably tapered internally threaded section. The variable taper within the clamp facilitates the clamping together of the two telescoping portions of the tine.

Abstract: A print wheel mounting assembly for a daisy type print element comprising a generally circular disc section coupled to the hub of the print element, a generally cylindrical section, an end cap section pivotally coupled to the cylindrical section and having a shaft portion extending at right angles therefrom and back toward the hub of the print element and a coil spring positioned around the generally cylindrical section with the end portions positioned such that when the shaft portion of the end cap is inserted therebetween, the coil spring is tightened around the generally cylindrical portion to clamp the print element firmly to the shaft of the print element motor.

Abstract: Disclosed is a device for loading and unloading modules relative to a pressure vessel and utilized in reverse osmosis systems. The device includes an elongated support for receiving the modules, a fluid actuated cylinder located at one end of the support and a clamp at the opposite end of the support for clamping the support to the open end of the pressure vessel. As each module is disposed on the support, the cylinder is actuated to extend its piston whereby the piston head displaces the module along the support into the open end of the pressure vessel. Additional modules are similarly loaded into the pressure vessel whereby the modules are serially arranged within the pressure vessel.

Abstract: A fastening device for stably mounting a fishing reel to a fishing rod by the fastening action of a pair of cooperating sleeves, one fixedly and the other axially slidably mounted on a main cylindrical body which is attached to the fishing rod. The shape of a hood possessed by each sleeve is so improved as to stably and snugly fasten the foot of the reel, allowing very limited horizontal displacement of the reel.

Abstract: A collar for axially clamping tools, spacers and the like on a shaft having a smooth portion and a threaded end portion includes an internally threaded attachment ring to fit on the threaded end of the shaft, an adjustment ring adjacent the members to be clamped and tightening screws threaded through the attachment ring and abutting the adjustment ring to axially urge the latter against the clamped members. The attachment and adjustment rings are interconnected by annular flexible connecting portions and an intermediate ring through which the screws freely pass. A second embodiment includes a second intermediate ring and additional connecting portion. A third embodiment includes an outer ring and clamping screws to urge the outer and attachment rings together to improve the grip of the collar on the threaded end of the shaft.

Abstract: A locking device is provided for a potentiometer dial and knob which are disposed on the front panel of a printed circuit board. There is a radial flange on the shaft of the potentiometer dial and knob. The base or non-turning portion of the potentiometer is fixedly disposed on the panel and is fixedly disposed on the printed circuit board. A pressure plate member having an opening therein is disposed around the rotatable shaft. The flange may thus abut the pressure plate to prevent substantial axial motion of the shaft which might cause the potentiometer base to be loosened from the printed circuit board. A movable locking member having an opening is disposed around the outer portion of the shaft so that the flange is disposed between the pressure plate and the locking member. There are second aligned openings in each of the locking member and the pressure plate through which a screw protrudes. The threaded base of the screw is rotatably disposed in a correspondingly threaded hole in the panel.

Abstract: An anchoring arrangement, especially for pre-stressed concrete constructions, for anchoring reinforcing means in the form of ropes, cables, wires and rods, by means of a sleeve and an intermediate layer arranged within the sleeve and defining an axially extending hollow space substantially filled by the reinforcing means to be anchored. The intermediate layer which tightly engages the sleeve and the reinforcing means comprises granular material and a binding substance therefor, while the intermediate layer is harder than the reinforcing means.

Abstract: A method and article for use in making a high strength positive solderless electrical connection using a strap conductor anchored to a clamping bolt by a tempered spring clip formed with sharp crested projections. The article and method have widely varied applications including the grounding of the thin shield of a shielded cable as a mechanical tie and electrical tie around a splice between shielded cables thereby isolating the spliced connections from cable tension forces, and many other uses.

Abstract: The assembly of a shaft with a torque-applying or -resisting load member in which the shaft is provided with a non-circular cross-section at the site of the assembly and the load member has an aperture adapted to receive the shaft and to transmit to the shaft a torque in at least one direction, and the assembly is maintained by an attaching member which is mounted on the shaft adjacent to the load member, and is capable of transmitting a torque to the shaft opposed to that of the load member and the load and attaching members are biased in opposite directions rotationally of the shaft and fastened together.

Abstract: An assembly of a pulley and shaft and a coupling therebetween. The coupling comprises a clamp having radially deformable jaws embracing the shaft and a jaw actuator for moving the jaws toward the shaft to clamp the pulley to the shaft. The clamp can be incorporated in a pulley having complementary mating stamped half sections. In one embodiment, the stamped pulley half sections have oppositely embossed hub portions forming a pocket in which the clamp is received internally. In another embodiment, the clamp is exposed and is mounted on the outside of one of the pulley half sections.

Abstract: A connector for joining a tool to a substantially rigid metal tubing, the connector comprising a substantially rigid cylindrical member having an outer diameter smaller than the inside diameter of the metal tubing, a tool fitting attached to one end of the cylindrical member and a tubularly shaped clamp which is maintained in a fixed position relative to the cylindrical member so that when the clamp is tightened, the connector is joined to the metallic tubing.