Abstract: A process for the production of synthetic plastic chamois leather footwear, comprising injection molding of the uppers of the footwear of plastics, attaching the sole and heel thereto, coating the uppers with adhesive and flocking them in a flocking machine with rayon flock having a certain count and length. To prevent the sole and heel from being flocked, too, they are inserted in an appropriate sole protection mold during the flocking operation.

Abstract: The error rate and the operation of repeaters inserted in an optical transmission line are monitored at the terminal station on land by transmitting the test signal and monitoring the response signal of repeaters through the optical data transmission line without utilizing interstitial copper pair. Each repeater has the particular identification code, and the transmission terminal transmits the test code having the repeater identification code and an acknowledgement block with an empty bit position on the time divisional basis with the data to be transmitted. The repeater which finds his identification code in the test code, inserts the response in the acknowledgement block, and repeats the signal including both said test code and the data to be transmitted. The reception terminal analyzes the response signal of each repeater to determine the error rate of each repeaters.

Abstract: A closed center programmed valve system having a load sense fluid source for control of the raising and lowering of load means by a raise and a lower normally closed two stage valve assembly. Each of the second stages of the valve assemblies has a poppet with a parabolic control which is dimensioned to provide substantially linear flow rate change for minimized shock when the respective valve is actuated to the valve closed state. The load sense for the load means is taken from the outlet of the raise second stage without the requirement of a separate actuated valve or land with a load sense signal being applied to the fluid source during the time the raise valve assembly is actuated to the valve open state.

Abstract: A fuel transport land vehicle formed by a tractor and a trailer carrying fuel in which the tractor has a plurality of axles all of which are steerable. The tractor and trailer are detachably coupled so that they remain along the same general longitudinal axis and sideways relative motion between the tractor and trailer is prevented. A pumping module is removably coupled to the vehicle and has disposed therein means for pumping, filtering and modulating the flow of fuel from the trailer.

Abstract: Device for a knitting machine operative to detect knitting needles having broken heads and to actuate a stop motion to shut down the machine. The device includes a needle sensing unit connected electrically to the stop motion and having a retractable sensor element for sensing broken needles, and a needle deflecting roller for deflecting unbroken needles away from the needle sensor element. An adjustable support bracket mounts the needle sensing unit and needle deflecting roller on a knitting machine to locate the needle deflecting roller in the needle path to contact the hooks of unbroken needles and to locate the needle sensor element in the needle path to contact the stems of broken needles. Needles having broken heads are not deflected by the needle deflecting roller, but are sensed by the needle sensing unit to activate the stop motion.

Abstract: This invention relates to U-shaped tunnel-type forms for poured concrete having an upper horizontal panel resting on two spaced vertical sides which, in turn, are separated on the ground by a combination of jacks and wheels. The bottom portions of the two sides are connected by plural horizontal retractile tie beams. The upper horizontsl panel is supported by articulated horizontal beams pivotal at their ends and in the middle to permit the panel to be deformed by curving it downward, thereby pulling toward each other the spaced corners or edges of the dihedrons formed by the junctures of the spaced vertical sides and the horizontal panel.

Abstract: The invention comprises a set of golf clubs designed to suit a particular swing, each golf cluf of the set having an effective length and a total weight, wherein the product of the effective length and total weight is substantially the same for each club in the set, and wherein the clubs of the set each have a shaft incorporating a stiffness factor differing from club to club and functionally related to the speed of the swing of the club. The invention also includes the method and apparatus for manufacturing the golf clubs of which the set of clubs is constituted.

Abstract: A dust-tight housing for confining, collecting and removing sawdust created by a power table saw, whereof the circular saw blade is affixed to a rotatable shaft located below the work table. The saw blade has its upper portion protruding through a slot in the table. Its lower portion is enclosed in dust-tight relation within the housing. The housing is mounted to the understructure of the power table saw so that it is moveable angularly in harmony with the angular movements of the saw blade. The housing remains stationary during vertical movements of the saw blade. The side walls of the housing are provided with moveable elements which permit dust-tight passage of the saw blade shaft into the housing, and which provide for ease of access for removal and replacement of the saw blade. The moveable elements are automatically adjustable, upon vertical or angular movement or displacement of the saw blade, to maintain the dust-tight character of the housing at all times.

Abstract: A digitally controlled acceleration and deceleration system in which the goal velocity applied to the object in the acceleration mode and the deceleration mode changes linearly, instead of the flat goal velocity, thus, the acceleration and/or deceleration applied to the object to be controlled in the feedback loop becomes flat, and the acceleration time and/or deceleration time is reduced. The outputs of the variable frequency pulse generator and the fixed frequency pulse generator are combined together to provide said goal velocity, and the number of the sum of two pulse generators is utilized as a command position for the movement of the object.

Abstract: A circulator comprises a cylindrical conductor housing, a disc shaped magnetic component mounted in said housing, three V-shaped inner conductors having two linear arms provided on the surface of said magnetic component, said inner conductors conjoining substantially at the center of said surface maintaining a 120-degree angle to each other, the open end of said V-shaped inner conductor being connected to the housing, and the other end of said V-shaped inner conductor being connected to an external strip line.

Abstract: A sliver loop knit fabric comprising a base fabric formed of knitted courses and wales and anchoring a plurality of tufts of sliver fibers, the free ends of which are incorporated into at least two courses and two wales of the fabric to provide a generally loop pile fabric. The fabric is knit on a circular jersey fabric knitter equipped with a plurality of fiber feeding cards. The knitter also is equipped with pneumatic means for directing jets of compressed air generally radially outward of the needles of the knitting machine. The jets of compressed air blow the free ends of the tufts of sliver fibers on the needles outwardly of the needle circle, and onto the tops of the sinkers, preparatory to incorporating the ends of the tufts into the fabric during knitting. The bulk of the free ends are incorporated into the fabric in the form of knitted stitches.

Abstract: A sliver loop knit fabric comprising a base fabric formed of knitted courses and wales and anchoring a plurality of tufts of sliver fibers, the free ends of which are incorporated into at least two courses and two wales of the fabric to provide a generally loop pile fabric. The fabric is knit on a circular jersey fabric knitter equipped with a plurality of fiber feeding cards. The knitter also is equipped with pneumatic means for directing jets of compressed air generally radially outward of the needles of the knitting machine. The jets of compressed air blow the free ends of the tufts of sliver fibers on the needles outwardly of the needle circle, and onto the tops of the sinkers, preparatory to incorporating the ends of the tufts into the fabric during knitting. The bulk of the free ends are incorporated into the fabric in the form of knitted stitches.

Abstract: In a numerical control machine tool, the time that the tool or bit actually operates is counted in the control device of the numerical control system. The present time control data collection system comprises a data memory having a plurality of flags, the condition of each of which reflects the actual operation of the related tool or bit, a real time clock which provides signals at predetermined intervals, and means for counting the real time clock on the condition that the particular flag in said memory is on. The counted value is displayed either directly, or the fact that the counted value exceeds the predetermined reference value is indicated. The present system can also be implemented using a programmed micro-computer.

Abstract: The coordinates (X.sub.n+1 Y.sub.n+1) of an arc to be traced at time t.sub.n+1 are preliminary calculated using the coordinates (X.sub.n Y.sub.n) at time t.sub.n, the radius (r) of the arc and a specified length l.sub.n during the time t.sub.n+1 -t.sub.n, thus the number of the calculations required for tracing an arc is considerably reduced and a low speed digital element which is cheap can be utilized in the present arc interpolation system. The formula for obtaining the coordinates is;X.sub.n+1 =X.sub.n +Y.sub.n .multidot.l.sub.n r-X.sub.n .multidot.l.sub.n.sup.2 /2r.sup.2Y.sub.n+1 =Y.sub.n -X.sub.n .multidot.l.sub.n /r-Y.sub.n .multidot.l.sub.n.sup.2 /2r.sup.2The asymptotic change of the above formulae and the apparatus according to the asymptotic formulae is also possible.

Abstract: A method of portioning a material and a portioning machine for carrying out the method, the portioning machine comprising a body having an inlet and outlet with gate means movable within the body to selectively open the inlet and the outlet and piston means for compacting material in said body to a predetermined density and for extruding a predetermined quantity of material from the outlet. The piston may be provided with pressure sensitive means which are adjustable so that the density of material compacted can be preselected.

Abstract: The present invention concerns a process and apparatus for improving the efficiency of the deoxidation, desulfurization and purification of molten steel in the pouring or casting ladle by the injection of a band of metal and/or a selected quantity of a granular or powdery addition product into a bath of molten steel in a ladle, wherein a band drive assembly is disposed above, in proximity to, the surface of the molten bath and is operative to propel vertically a band of metal in rectilinear form, perpendicularly to the surface of the molten bath, deep into the bath so that the metal band approaches as closely as possible the bottom of the ladle to improve the distribution of the metal and the addition product throughout the molten bath.

Abstract: A method of producing a bonded laminate by sealing round the edges of a pair of face-to-face spaced sheets of frangible material, introducing into the envelope so formed a liquid resin composition and solidifying the liquid, the seal around the sheets being formed by gas-permeable, resin-impermeable material so that when the resin is introduced the sheets can be sealed completely and trapped air can escape through the seal. This permits very precise control of the amount of resin in the laminate and avoids difficulties involved in the removal of air bubbles.

Abstract: A throttle synchronizer for quickly and accurately setting and resetting each of the separate throttle valve control levers of plural internal combustion engines at a selected engine operating speed, with accurate and automatic synchronization of the engines at the selected lever setting. Adjustable throttle lever stops limit advance movement of the levers to the selected lever setting. The throttle lever stops are mounted on a transverse yoke, which is adjustable slidably relative to the paths of movement of the levers, so as to selectively locate the stops at any lever setting desired. The yoke is mounted slidably on a support located adjacent the levers, and a locking screw is utilized to secure the yoke in a selected position on the support. The throttle synchronizer is particularly useful on twin engine power boats having twin propellers, each driven by its own internal combustion engine.

Abstract: When the carriage of a machine is positioned at the reference position of the machine through coarse positioning and fine positioning, coarse positioning is first carried out so that the carriage can move in either direction according to the initial position of the carriage. The movement of the carriage is sensed by the combination of a platform mounted on the bed of the machine and a micro switch mounted on the carriage. The carriage is first moved at high speed and, when the carriage passes the reference point, it is moved at slow speed to return to the reference point. When the carriage again passes the reference position, coarse positioning finishes and fine positioning begins. In order to ensure coarse positioning in either direction and the change of direction of the carriage, a direction circuit is provided in a control unit of a numerical control system.

Abstract: A trailer to be towed by a vehicle for transporting a car and a boat having a first support assembly adapted to carry the car. A second support assembly is adapted to carry the boat and is movable between a lower and raised position. Two pairs of pivoted scissor arms are slidably secured to opposite sides of the first and second support assemblies. Hydraulic actuators are used to actuate the scissor arm pairs thereby to move the second support assembly between its raised and lowered positions.