Abstract: A person's memory of sequences is tested by shifting a relationship between switches and colored lights which they control. Switches in a row light colored lamps in a fixed sequence. A two part circular switch with opposed contacts equal in number to the switches or colors may be turned to shift the sequence of colors which the switches control. One part of the circular switch may be inverted so that the sequence of colors controlled by the switches may be reversed and may be shifted in reversed order. Inserts positioned between the two parts of the circular switch change the sequential relationships of colored lights and switches.

Abstract: An anti-smoke hanging wall has a channel bar with a downward-opening slot which is exposed in the ceiling of a building. Bolts hanging from said channel bar slot support a wall-bearer and a wall, hanging from said channel bar slot by means of said wall-bearer.

Abstract: A self-adjusting wear resistant seal assembly is provided for a cable rod slidably positioned within a cable conduit. A continuous polyethylene collar is radially compressed in close clearance around the rod by an elastomeric seal which embraces the end portion of the conduit and the collar and holds a flange on the collar against the end portion of the conduit. An integral lip on the seal engages the rod to provide a redundant seal. Corresponding serrations on the conduit and seal cooperate to secure the seal to the rod. A tapered lip may also be provided on the collar for engagement with the rod.

Abstract: Method of making a spherical bearing includes a bearing liner having a low-friction layer containing a resin matrix which includes therein a dispersion of self-lubricating particles. The particles include powdered or flock polytetrafluoroethylene particles and grahite fibers.

Abstract: A drum has a shell and tracks at opposite end of the shells. Inner and outer rings move within the tracks. The outer ring is constrained for vertical movement, and the inner ring is constrained for circumferential movement. At least one of the rings has a plurality of inclined planes, and the other ring has followers of the inclined planes. The followers have convex surfaces for fitting in concave surfaces of the inclined planes. A rack extending circumferentially on the inner ring has teeth shaped like ratchets. Turning gears turn the rack, and a latch successively engages the teeth. Lifting the latch permits the inner ring to move backward circumferentially allowing the follower rollers to slide down the inclined plane.The tracks and shells are covered by split hoops having inward hinges and latches.

Abstract: A method of manufacturing a bearing which advantageously includes a self-lubricating liner in which the bearing liner includes a woven fabric coated with a resin and powdered or flocked polytetrafluoroethylene particles on one side thereof, the liner and its resin cured in place within the bearing, a parting compound disposed on a bearing surface in contact with the liner having the self-lubricating particles disposed therein, the parting compound inhibiting bonding between the bounding surface and the liner during curing.

Abstract: A self-aligning, wear-resistant seal assembly is provided for a cable rod slidably positioned within a cable conduit. A rigid nylon ring which fits snugly around the rod is held against the end of the conduit by an elastomeric seal. The seal has an end wall which overlies the ring and has an axial bore aligned with the ring adapted for interference fit around the rod. Corresponding serrations on the conduit and seal cooperate to embracingly secure the seal to the rod.

Abstract: A spherical bearing assembly having an inner race member and an outer race member, the inner surface of the outer race member being a concave spherical surface, the outer surface of the inner member being a complementary convex spherical surface, the inner member including a spool member having a first threaded portion disposed on its outer surface and at least two spherical segments, each segment having a second threaded portion on its inner surface complementary to the said first threaded portion on the outer surface of the said spool member, the said segments disposed on and interlocked with the said spool member by the meshing of the said complementary first and second threaded portions, the said spool member's axial length is somewhat greater than the axial length of the said bore such that the said spool member, when threaded in a meshing relationship with the said spherical segments, a portion of the said threaded spool will extend beyond the lateral faces defined by the spherical segments, the said ex

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: An adapter for attachment to a push-pull control cable, the control cable having a conduit slidably supporting a motion transmitting core, an end fitting attached to the conduit and coaxial therewith, the end fitting having an annular groove therein, the adapter comprising a substantially "L" shaped member, the longer leg of the member having a longitudinally extending bore therethrough for fitting over and accommodating the end fitting at least one hole through the leg perpendicular to the bore and in alignment with the annular groove, fastening means adapted to be inserted within the hole to engage the end fitting at its annular groove, to positionally fix in an axial direction the adapter on the end fitting.

Abstract: A two-way cable television broadcasting system wherein a single coaxial cable is used to deliver TV and FM programs to many subscribers with each subscriber having a specific allocated band of frequencies for reception of any desired television or FM program and where each subscriber can independently select the program desired to be seen and/or heard which will be delivered to the subscriber over an allocated band of frequencies. The subscriber drops from said coaxial cable are so arranged that they descend in frequency along the length of the feeder cable. Automatic switching of any incoming program to any drop is achieved by means of converting all incoming channels to a common I.F. frequency at an amplifier or control station and then deconverting said frequency to the desired outgoing band of frequencies.

Abstract: A spherical bearing assembly has a metal inner race member and an outer race member. The inner surface of the outer race member is a concave spherical surface and the outer surface of the inner member is a complementary convex spherical surface. The outer member includes an annular recess the base of which is threaded. The recess is adapted to threadably receive a first yieldable plastic annular ring whose outer surface is threaded with threads complementary to the threads on the base of the recess. A second formable and yieldable annular ring is also received in the recess in a side-by-side relationship with the first annular ring. The inner surface of the first and second annular rings provide approximately one-half of the concave spherical surface of the outer race member. The first annular ring operationally captures the second annular ring and the inner race member within the outer race member.

Abstract: A fiber optic seal assembly tool has a stripper for stripping a predetermined length of tubing from an end of a fiber optic bundle. The stripped end is inserted in a seal block and the block is gripped in a hand tool. An actuating lever is squeezed, biasing bundle clamps closed, and sliding a grooved anvil toward the block to press a collet chuck which holds the fiber ends into the block. When the collet is pressed into the block, ends of the fibers are sheared by a knife which moves in the anvil opening.

Abstract: An 8-cylinder engine is converted to a 4-cylinder engine by disconnecting and removing four alternate firing order pistons and connecting rods, by attaching a counterweight to each crank shaft throw journal from which a connecting rod has been removed, by blocking intake ports with replacement gaskets having obstructions at the ports of the selected cylinders and by adding weights to the flywheel.

Abstract: A detent positioning device comprising a housing with a shaft rotatably mounted therein, said housing having a longitudinally extending portion with at least one recess therein so sized to accommodate a roller, a circular spring member disposed on said longitudnally extending portion engaging said roller and applying a biasing force thereto, said roller in engagement with the outer surface of said shaft, at least one longitudinally extending detent on the outer surface of said shaft in the region of said recess to accommodate a portion of said roller; said shaft being positioned relative to said housing when said detent is in alignment with said recess and said roller is biased into said detent by said spring member.

Abstract: Equipment for retaining flowable material within a packhole has two connected sections defining two boundaries of the packhole. The sections comprise a base and a roof engaging assembly for engaging the mine roof. Each section has a flexible sheet connected to the base and roof assembly.

Abstract: A portion of a beam of light directed towards a flow of particulate material is interrupted with an edge such that the edge casts a shadow across the material. The shadow profile is sensed and a signal indicative of the sensed shadow profile is derived and monitored as a function of flow velocity to determine the volume of flow.

Abstract: A rotating brick saw has an enclosure which substantially surrounds a rotating saw, a sliding table which carries a brick into the saw and tracks on which the table slides. The enclosure has an opening at its distal end and a pit beneath the opening for collecting sawed particles. The sliding table has a wiper at its distal end to wipe sawed particles along a base of the enclosure into the opening and pit. A door closes an opening at the front of the enclosure, and the door has a flexible wiper at its base which wipes the table as it slides outward of the enclosure. A chute on the door guides sawed particles downward to the table and through an aperture in the table into a pit near a proximal end of the saw enclosure. The rear wall and front door of the enclosure are sloped inward to further aid in the deflection of sawed particles toward the particle-collecting pits.

Abstract: A sound frequency reproduction system and apparatus has a chair for a human. A transducer is vibrated by a sound signal of appropriate frequency. The vibrating shaft of the transducer is directly fitted to the framework of the chair. The sound signal is provided to an acoustic device, including a speaker, located near the chair.

Abstract: A powerhead mounting bracket is connected to a diver's breathing tank support. A cord connected to the receiver has a plug with a projection for loosely fitting in an axial bore of the powerhead. The plug is placed in the axial bore and the powerhead shaft is placed between the flanges on the receiver. The sling at the other end of the powerhead is stretched, forcing the powerhead tight against the plug, and the stretched spring is hooked into slots in the receiver. The stretched sling holds the shaft of the powerhead against the base of the receiver and holds the powerhead longitudinally against the plug. When required for use, the powerhead shaft is grasped near the firing end and is pushed in a direction towards the sling, further stretching the sling. When the plug drops out of the axial bore, the shaft is pulled outward from the receiver, allowing the sling to become untensioned, whereupon the sling drops out of the slot in the receiver.