Abstract: A shaft-mounted bushing for connecting a rotating member to a shaft. The bushing includes a frame receiving a hub rotatably mounted therein. The hub includes an opening at one end thereof for receiving a shaft from the one end thereof. The hub includes a tapered portion which converges inwardly from the one end of the hub and toward the other end thereof. A sleeve is mounted into the hub from the one end of the hub and between the tapered portion of the hub and the cylindrical shaft. The outer portion of the sleeve converges inwardly from the one end of the hub and engages the hub. The sleeve presents an inward portion which is coaxial with and parallel to the cylindrical shaft for engaging the shaft in force transmitting relation ship therewith. The bushing assembly is completed by drawing the sleeve into the hub by way of a fastener located at the other end of the hub.

Abstract: The present invention is an improved drill head unit in which the lower portion of the drill chuck has a lobed shaped cross section which fits into a corresponding lobed shaped opening in a shaft connected to a spiral bevel gear mounted for rotation about a vertical axis. The lobed shaped cross section replaces the spline drive previously used in such units, and the spiral bevel gears replace the bevel gears previously used. An improved and simplified radial elastomeric seal is provided to separate a vacuum pressurized cavity in the housing from a lubricating cavity in the housing, and a locking mechanism locks against the drill steel such that the drill steel can be withdrawn from a drilled hole by lowering the drill head unit.

Abstract: The present invention is a combined gas flow resistance device and safety shield which incorporates a plurality of narrow parallel passageways through which filtered gas from a plurality of filter elements passes to a clean gas outlet. The device also has inlet for carrying pulses of high pressure gas to the downstream side of a plurality of filter elements, and a porous safety shield connected across the passageways to prevent solid particles from passing from the filter elements to the clean gas outlet.

Abstract: A muzzle loading rifle has a cocking member which is rotatable about an axis perpendicular to the central axis of the barrel of the rifle and has a cam mounted on the distal end thereof. When the cocking member and the cam are rotated, the cam will move the hammer from a fired position to a cocked position. Second, a cylindrical primer holder having a transverse hole therethrough is provided to retain a primer charge. The primer holder may be rotated from a firing position to a safety position while retaining the charge enclosed within the receiver of the rifle. Third, a safety lever rotates about an axis perpendicular to the axis of rotation of the hammer sear from a first locked position to a second unlocked position. Movement of the safety lever to the second position unlocks the sear and allows the weapon to be fired.

Abstract: A cable clamp is provided for attaching a mid-portion of a cable having an electrically conductive interior surrounded by a non-conductive cover to a portion of a vehicle. The clamp includes a metal plate which is attachable to portions of a vehicle by a bolt extending through a transverse hole in the plate to secure the plate to the vehicle frame. A resilient elastomeric strap surrounds a portion of the length of the cable and surrounds the peripheral edges and a portion of the planar surface of the plate.

Abstract: The change in the toe of the steerable wheels of a vehicle when the inside wheel is turned through an angle of twenty degrees is determined by turning the inside wheel through an angle of ten degrees, measuring the change in toe which resulted, and multiplying the measurement by four.

Abstract: An insert in accordance with the present invention is attachable to a seat on a mining machine such as a continuous mining machine or a radial longwall. The insert has a cutting face, an inner end, an outer end, and a back adapted to be retained on a seat for retaining an insert. The back of the insert has a protrusion thereon, which may be in the shape of a longitudinal rib, and positioned adjacent each side of the longitudinal rib, a flat. The rib may have any desired cross section, but in the preferred embodiment the rib has an arcuate cross section, or V-shaped cross section. Also a stub on the inner end of the insert fits into a bore in the seat to position the insert during braising.

Abstract: A device for dampening the vibration of a rotating disc during the machining of the faces thereof has a spring member having a wide base portion and two arms extending from the ends of the base. At the face end of each arm is a pad mounted to pivot about an axis perpendicular to the axis of the arm. A dampening device in accordance with this invention has eye shields without requiring that the eye shield be removed.

Abstract: A heat transfer roll has first and second disc-shaped outer end sections each having a centrally located tubular shaft. An inner tubular body is fitted over the two outer end sections, and a plurality of spiral ribs extend from the first end to the second end around the inner tubular body, and an outer tubular shell is fitted over the spiral ribs to form a plurality of spiral channels. Each of the end sections have one or more passageways therein which are in communication with the bore through the tubular shaft and the spiral channels. One of the outer end sections is adapted to receive a plurality of removable plugs, such that each removable plug when inserted will block the flow of liquid to one of the spiral channels. To clean such a heat transfer roll, all but one channel may be closed such that the remaining open channel may be cleaned.

Abstract: A drill bit is provided which has a novel blade having an elongate longitudinal protrusion positioned axially along the centerline of one side of the blade. The body is adapted to retain the blade in a transverse slot on one end of the body. The slot is provided with a centrally located longitudinal recess along one of the sides of the slot which is adapted to receive the longitudinal protrusion of the blade when the blade is positioned in the slot.

Abstract: An external drive assembly is provided which conveys rotational movement to a shaft, and the shaft is adapted to be positioned substantially coaxial with the axis of the wheel hub of a motor vehicle. An adjustable drive member extends from the distal end of the shaft to the center of an adapter hub attachable to the wheel hub. Adjustable lug adapter legs are provided in which one end of each of such legs is adapted to attach to the threaded studs of an automobile wheel hub and the other end of each of the legs is provided with a cylindrical pin adapted to fit within one of a plurality of bores spaced around the peripheral edge of the adapter hub to retain the adapter leg within the adapter hub.

Abstract: An electrically operated drive assembly for turning a motor vehicle disc brake rotor while the rotor is still on the vehicle includes a portable stand or base having a combination electric motor and adjustable drive shaft assembly pivotally mounted thereon. The end of the drive shaft is selectably releaseably retained on a lug adapter mechanism that is retained on the motor vehicle wheel lugs. The drive shaft assembly includes a right angle bend that allows the entire drive assembly to be positioned to one side of the motor vehicle wheel hub and rotor assembly. This arrangement allows a mechanic to have open access to a separate portable brake lathe which is mountable on the vehicle brake caliper mounting bosses. The drive assembly turns the brake rotors at a predetermined speed which is suitable for combined operation with a portable brake lathe.

Abstract: A gear motor having an output shaft for driving the dispensing mechanism of a vending machine includes a plurality of magnetically operated switches positioned adjacent one end of the output shaft and a plurality of magnets attached to that end of the output shaft. A DC electric motor is energized by a computer to rotate the output shaft in a first direction until one of the magnetic switches is actuated by a magnet, which instructs the computer to reverse the polarity of power to the DC motor, reversing the direction of the motor and the output shaft. When the output shaft is returned to its standby position, one or more of the switches are again actuated which instructs the computer to terminate power to the DC motor. An enclosure surrounds the switches and magnets and protects them from the ambient.

Abstract: A hot gas filter utilizes a plurality of inclined, pie-shaped filter candle support members from which a plurality of filter candles are suspended in a filter chamber within a pressurized filter tank. The support members and associated filter candles are removable from the top of the tank for repair and maintenance, and a plurality of tiers of such assemblies are mounted in the tank.

Abstract: A fog producing firefighting tool has a nozzle which includes a plurality of apertures oriented so that when pressurized fluid flows through each aperture, the liquid impacts at an angle of 90 degrees with another stream of liquid to atomize the liquid and create a fog. The firefighting tool is of modular construction which includes a first member, one or more intermediate members, and an end member wherein the members are connected to each other by means of quick coupler devices which can be readily locked into coupled relationship and will not interfere with the usage of the tool when it is forced into or removed from a hole in a structure.

Abstract: A tool for guiding a push type keyway broach in the broaching of one or more keyways in a single bore of a workpiece includes a bushing fitable into the bore of the workpiece, a rectilinear guideway in the bushing for slidably receiving the base portion of a conventional push type broach, and a guide pin receivable in a selected one of a plurality of angularly spaced radial holes in the bushing and having an externally extending portion dimensioned to slidable fit into a previously broached keyway, thereby to precisely set and hold the broach at a selected, predetermined angle relative to the previously broached keyway.

Abstract: The chroma circuits of a VCR are tested by replacing the video signal from the video heads of the VCR with a composite signal from a test pattern signal developed by a test instrument, which composite signal includes a chroma signal which is phase rotated in response to a chroma reference signal from the VCR. The chroma reference signal from the VCR is used to control the chroma signal in the composite test pattern signal.