Abstract: A container holding apparatus for mounting either on a slotted horizontal work surface, such as a paint shelf of a step ladder, or outwardly from an upwardly extending support, such as a leg of a ladder, including a container-receiving assembly having a plurality of vertically extending members joined by a horizontally extending member. A first bracket is attached to the horizontal member and a first clamp member is adapted for fastening to the first bracket by a bolt received through the slotted horizontal work surface for clamping the container-receiving assembly to the work surface. A second multi-purpose bracket is removably attached to the horizontally extending member to support and stabilize the container-receiving assembly in an upright orientation on the work surface. For mounting the container-receiving assembly outwardly from the upwardly extending support, the multi-purpose bracket may be removed from the horizontally extending member and attached to one of the vertically extending members.

Abstract: An artificial tooth for use in a denture comprising a base portion, an occlusal portion, and an intermediate portion sandwiched between and secured to the base portion and occlusal portion, the intermediate portion being resilient to permit the occlusal portion yieldably to move relative to the base portion. The intermediate portion is disposed generally at equal vertical distances from the occlusal surface of the occlusal portion and the ridge lap surface of the base portion. An anchor wire or wires or other connecting members are provided for limiting the movement of the occlusal portion relative to the base portion. Such an anchor wire may preferably be rigidly connected to the occlusal portion and loosely pivotally connected to the base portion with the anchor wire extending downwardly through the sandwiched intermediate portion. The loose pivotal connection permits the occlusal portion to move from its normal position toward the base portion even by tipping movement.

Abstract: Artificial teeth for use in a denture comprising a denture base and a plurality of teeth anchored in the denture base, each tooth having a base portion providing a ridge lap surface and an occlusal portion providing an occlusal surface, wherein the improvement comprises one or more lugs extending outwardly from each tooth intermediate its occlusal surface and the ridge lap surface to serve as a locating lug or tab for positioning the tooth in the mold in which the denture base is formed on the base portions of the teeth. These locating lugs or tabs or at least those which are not embedded in the denture base are removed by grinding and polishing.

Abstract: A heavy duty cylindrical lock set adaptable for various "functions" and having improved features, especially to permit a key-removable lock core to be reversible in its knob mounting to suit right- and left-hand doors. A knob sleeve of large diameter is slotted and shaped at its knob receiving end to form two diametrically-opposed channel sections of high strength and rigidity. The inward edges of the four channel side legs form a mounting seat to receive the key-plug-containing body of the core on the axis of the knob, while the two spaces between the channel sections permit the pin-tumbler lobe or section of the core to extend radially in either of two orientations about the axis of the knob. Two of the channel side edges are notched to engage a key-controlled retaining lug of the core. The knob has a large bore in its outer end and is supported from the knob sleeve by a drive ring which accomodates the core in both orientations. A face plate is held in the knob bore by the core and closes the knob bore.

Abstract: An electronic timing system for timing a frying cycle of a fat frying apparatus includes means for adjusting the timing cycle for variations in the temperature of the fat or oil used in the fryer. The temperature adjusting portion of the system includes a thermistor mounted in a probe immersed in the fat or oil. The thermistor is one leg of a resistance bridge. The bridge is coupled across a comparator which senses the output voltage therefrom and generates an output signal which varies with temperature. This temperature-related output signal is compared in a second comparator with the voltage across a charging capacitor in a resistance-capacitance network. When the charging voltage from the resistance-capacitance network exceeds the temperature-related output signal, the second comparator generates a signal which indicates that the frying cycle is completed.

Abstract: A back mounting structure for a chair having a seat and a contoured back extending generally vertically from a rearward curved edge of the seat is achieved by attaching the back and seat with a plurality of angle brackets, each having a horizontally extending leg and a vertically extending leg. The horizontal legs of the angle brackets are attached to the seat and the vertical legs of the angle brackets are attached to the back. The angle brackets more centrally disposed along the joined edges of the back and seat have their horizontal legs attached to the upper surface of the seat. The angle brackets more outwardly disposed along the joined edges have their horizontal legs attached to the underside of the seat. Forces exerted on the seat back tending to force the central portion of the curvilinear joined edges downwardly and the outward portions of the joined edges upwardly are thus counteracted.

Abstract: For use on a truck steering wheel having a central hub, an outer peripheral rim, a plurality of spokes extending radially outwardly from the hub to support the rim and a horn button on the hub extending axially above the level of the rim, a removable desk board providing a generally flat upwardly facing work surface and a downwardly facing mounting surface. The mounting surface is contoured to provide a downwardly opening recess for receiving the horn button in the upper portion of the hub and downwardly projecting means for engaging the top of the wheel rim to secure the board on the wheel.

Abstract: A material handling system comprising a mobile longitudinally extending receptacle having a bottom, side walls, forward end wall and pivotally movable end gate. Inside the receptacle is a pusher blade extending generally from side to side, the pusher blade being mounted for longitudinal movement between a first position adjacent the forward end of the receptacle and a second position adjacent the rear end of the receptacle. A hydraulic system is used to move the pusher blade. The blade is mounted for movement by a system including, at each side of and within the receptacle and extending longitudinally therealong, a lower upwardly facing guide track and an upper downwardly facing guide track. Slide blocks are mounted on the blade to bear against these tracks. The blade is shaped to move the material inwardly from the sides, downwardly from the top and upwardly from the bottom as the blade moves rearwardly.

Abstract: An electrocoating tank arrangement characterized by a centrally and longitudinally disposed paint supply header extending along and proximate to the bottom of the tank, where the tank has sloped bottom walls, and where a highly desirable paint agitation pattern is achieved, permitting the part or article under processing to be effectively coated with optimum results. The electrocoating tank may further include adjustable weir arrangements at opposite ends thereof to promote surface circulation. The paint material is recirculated through conventional means and the electrocoating tank forms an important function in a conveyorized operation.

Abstract: A fan silencer having an external shell of annular cross section and a cylindrical central core mounted on a rigid frame. The external shell and the inner core each contain noise absorbing insulation, and have easily removable wall sections to allow fast and easy replacement of said insulation and cleaning of said wall sections.

Abstract: A slide assembly comprising a relatively fixed elongated track member, a relatively movable elongated track member, and an intermediate elongated track member movable relative to the fixed and movable track members, each track member having upper and lower longitudinally extending, parallel edge portions. The intermediate track member provides, respectively, at its upper and lower edge portions, a first set of upwardly and downwardly opening, longitudinally extending channels and, intermediate its upper and lower edge portions, a second set of upwardly and downwardly opening, longitudinally extending channels in vertical registry with the first-mentioned channels.

Abstract: A shaving lubricant which consists essentially of approximately 3 parts by volume of distilled white vinegar and approximately one part of citrus fruit juice. In an optimum form, the fruit juice is approximately one-half lemon juice and one-half lime juice and approximately 100 International units of vitamin E are dissolved in approximately four liquid ounces of the liquid mixture. A method of shaving wherein the area to be shaved is lathered, a sharpened edge of a razor blade is liberally sprayed with the lubricant, and the sprayed blade edge is used to shave the lathered area, respraying the blade edge after each removal of lather therefrom.

Abstract: In a system for optically scanning and reading data printed in transversely extending lines longitudinally spaced apart on a document and comprising a scanning head including an electro-optical arrangement for scanning and reading the data, friction drive rollers for engaging and moving the document longitudinally past the scanning head, a motor drivingly connected to the rollers, and controls for the motor, the improvement in which the motor is a stepper motor having an output shaft which is advanced one step about its axis each time the motor is pulsed. The controls include a pulse generator, an optical system for detecting such lines of data on the document and stopping the longitudinal movement of the document, the optical system being operatively connected to the generator and effective to control the pulse output of the generator. The generator preferably provides pulses at a first predetermined frequency and pulses at a second and lower frequency.

Abstract: A muffler for attenuating the exhaust gas noise from an internal combustion engine in which there is an elongated shell having a pair of end caps rigidly secured to the ends thereof. Inlet and outlet conduits are mounted in said end caps and are operatively connected to sound attenuating means carried within the shell for reducing the noise level of the exhaust gases entering the muffler through the inlet conduit and exiting through the outlet conduit. Intermediate its length the shell has a groove formed therein to thus form a fracture point in the shell for controlling the location of a rupture in the muffler in the event that the muffler is subjected to an excessive number of backfires.

Abstract: A drive system comprising a prime mover such as an engine providing a drive shaft, a shell supported by the shaft for rotation relative to the shaft, a split groove pulley mounted on the shaft, the pulley including one flange secured to the shaft for rotation therewith and a complementary flange connected to the shell for rotation therewith, the flanges defining a space axially therebetween, an adjustably movable take-up pulley having a belt-tightening position and a belt-loosening position, and a belt trained about the pulleys. When the belt is tightened by the take-up pulley, the shell and complementary flange rotate with the shaft and the said one flange, i.e., the belt provides a driving connection between the two flanges. When the belt is loosened, the driving connection is broken such that the one flange and shaft rotate relative to the complementary flange and the shell.

Abstract: An electronic control circuit for automatically stopping the tape drive motor of a magnetic tape recording and playing unit. A set of contacts is provided in the circuit to detect electrically conductive means located at preselected points along the magnetic tape, and upon such detection, to alter the conductive states of three control transistors to cause de-energization of the tape drive motor. Diode logic means in the circuit prevent automatic stopping of the drive motor when the recording and playing unit is operated in a particular mode wherein such stopping is not desired.

Abstract: A pressure-vacuum cap for a chamber such as an automobile gas tank having a normally upwardly extending filler neck formed with a peripherally and radially extending, upwardly facing sealing surface concentric with the longitudinal axis of the neck, the cap comprising a cover, a concentric housing extending downwardly from the cover into the filler neck and a gasket or gaskets providing a seal between the housing and the sealing surface, the housing providing a valve body having a centrally disposed, concentric passageway extending axially therethrough and in communication with the chamber. A pressure-vacuum valve arrangement is disposed in that passageway for normalizing the pressure in the chamber, venting the chamber to atmosphere when the pressure in the chamber exceeds a predetermined superatmospheric level and when the pressure in the chamber drops below a predetermined subatmospheric level. The valve body also provides, in addition to the pressure-vacuum valve arrangement, a roll-over valve feature.

Abstract: For use in measuring air velocity and pressure changes in a duct, a gauging system comprising a gauge including a vertically extending transparent tube within which a ball moves to a position corresponding to the pressure in the tube above and below the ball, a velocity scale and a pressure scale extending alongside the tube and increasing from their lower end to their upper end, a vertically extending transparent shell enclosing the tube, and one or more rigid tubes for connecting the lower end of the gauge tube to the interior of the duct to read total pressure or static pressure and a flexible tube for connecting the upper end of the shell to the interior of the duct to read static pressure.

Abstract: Scholastic test grading apparatus uses a circular answer sheet having a circular series of angularly-spaced, numbered rows of radially-spaced answer spaces on which the student marks his answers to correspondingly numbered questions by blacking-in selected ones of the answer spaces as with soft pencil lead. The sheet also carries punch locating indicia opposite each number. The answer sheet is graded by pressing it, in a selected orientation, against a printed circuit board which has formed thereon a pattern of electrical gaps corresponding to the correct-answer positions on the answer sheet. The blacked-in pencil lead blacking material in such positions bridges the electrical gaps to close electrical circuits to a circle of lamps, which light up to show both how many and which answers are correct. A question label disk placed in the circle of lamps identifies the questions or groups of questions indicated by the several lamps.

Abstract: An electronic control logic system for processing the results of a spectrophotometer analysis of a serum chemistry comprised of a serum and one or more chemical reagents. The spectrophotometer output representing air as a light path and another output representing the test chemistry as a light path are integrated and the air path integrated value allowed to exponentially decay until its value is equal to that of the integrated test chemistry path value. The decay time is converted into a train of digital pulses representative of the optical density of the test chemistry. These pulses are counted and their total stored for comparison with the corresponding optical density of a standard solution. The concentration of the element for which the particular test was designed to detect is known for the standard solution, so the percentage concentration of that element in the test chemistry may be thereby ascertained.