Abstract: Certain aluminum compounds, such as aluminum alkoxides, chelates and acylates, catalyst the reaction of .tbd.SiOH with ##STR1## to yield compositions containing ##STR2## linkages.

Abstract: An a.c. operated arc welding current supply unit comprises a frequency converter of the series capacitor type and operating with a half period which is substantially less than the average duration of the current and voltage transients caused by short circuits through droplets of weld material during welding. The frequency converter is connected to welding electrodes through a transformer in series with a rectifier to provide direct current for the welding electrodes, and the frequency converter is associated with a control device for controlling the operating frequency of the converter in a manner such that it is substantially inversely proportional to the square of the input voltage of the current supply unit, thereby maintaining the power output of said unit substantially unchanged irrespective of changes in load caused by the welding operation and irrespective of variations in said input voltage.

Abstract: A high-precision amplifier employs a feed-forward technique to provide a first order correction of amplifier distortion. A second amplifier is utilized to sense the base-to-emitter distortion of a main amplifier and develop an error output which is injected into an output node to provide cancellation of distortion from the output of the main amplifier. The feed-forward distortion-correction technique is particularly applicable to high-precision wideband differential amplifiers; however, the technique may be used in other amplifiers as well.

Abstract: An underwater diving suit construction that provides skirts of low friction material adjacent the openings through which the diver inserts his head, hands and feet. This greatly facilitates getting into the suit and reduces the discomfort which normally accompanies this action without requiring specials aids such as greases and powders and greatly increases the life and dependability of the seals and thereby the suit.

Abstract: A protective glove having a rigid thumb protecting member overlying the outer portion of the thumb from a point beyond the interphalangeal joint thereof to a point beyond the first metacarpal; a rigid dorsal extension integrally formed with the thumb protecting member and overlying the metacarpals between the knuckles and the wrist; and a strap connected to the palmer surface of the protecting member and crossing the first web space to apply a force against the metacarpal phalangeal joint.

Abstract: The invention discloses interlinings for stiffening parts of garments such as collars, cuffs, sleeves, shoulders and similar parts of outer garments.The interlinings are particularly intended for iron-on or sewn patches and comprise; an interlining backing material consisting of a fabric which may be woven, textile or knitted, or a fleece, or simply a plurality of fibres arranged side by side; textile flock fibres having a fibre length of 0.5 to 2.0 mm and a flock binder consisting at least in part of a polymer material which is applied to the backing material in the form of a screen like imprint.The screen like imprint may consist of a screen of dots, lines or small rods numbering from 140 to 700 per square inch. The flock binder includes micro dispersed filling materials fast to cleaning and abrasion resistant. The flocks are applied to the flock binder by an electrostatic force field of direct current with a voltage within the range 20 to 100 KV.

Abstract: A passive dispenser for codispensing a predetermined volume of a first and a second solution into a body of liquid in response to a decrease in the level of said body of liquid comprising a first product chamber having a vent conduit and a refill/discharge pathway, and a second product chamber serially connected to a third product chamber thereabove by means of a conduit entering the second product chamber proximate the bottom thereof, said second and third product chambers having respective vent conduits and said second product chamber having a refill/discharge pathway, said pathways being siphon conduits.

Abstract: A seat and cover assembly for a toilet bowl including a seat member and a cover member pivotally mounted to a mounting block for movement relative to the bowl between an upright position and a lowered position. Springs are provided for biasing the seat member and the cover member into an abutting relationship in both the upright and lower positions of the members, and a magnetic latch assembly quick-releasably secures the cover member in its upright position.

Abstract: A tank containing conserved water having a drainpipe connected to a fresh water supply pipe of a toilet, and a valve along the drainpipe being automatically operated by a high pressure valve located along the fresh water supply pipe.

Abstract: This invention relates to a liquid directional flow apparatus which includes mounting means such as an elongate mounting tube having an inner portion attached to an outlet pipe of a swimming pool or other liquid retaining structure and liquid directional flow means associated with the mounting means. Preferably the mounting tube has an outer portion which is enlarged relative to the inner portion and functions as a socket for the liquid directional flow means which is preferably a pivot flow ball member. The arrangement is such that in the case of the apparatus being installed to an outlet pipe of the swimming pool or other liquid retaining structure which is offset to the planar or substantially planar outer face of a wall of the swimming pool or structure that the liquid directional flow means may be adjusted to any desired setting or orientation.

Abstract: The tool incorporates a housing for opposed tape and chalkline reels. The housing has sufficient height to act as, and in conjunction with, an attached abutment, to make the tool useable as a cutting guide square. The abutment surface has the triple function of aligning the device square to the edge of a piece of lumber edge while providing mounting bosses for a scribe element, and, with the scribe element, acting as a hanger for removably attaching the device to the user's belt.

Abstract: A motion conversion apparatus is disclosed having particular utility as a tool carrier actuator in a rotating taper thread generating tool head, wherein a plurality of tool carriers are moved axially of the workpiece and simultaneously transversly of the axis to form a tapered thread at the end of the workpiece. A portion of the actuating apparatus is mounted coaxially with a housing for the tool head and includes an inner and an outer actuating bar coupled together by helical keys and mating keyways such that relative axial motion between the inner and outer bars produces rotating movement of the outer bar. Rotation of the outer actuating bar is transferred to an actuating drum which has an outer surface having at least one helical keyway formed therein. In one embodiment, the actuating drum is a separate component rotating with the outer actuating bar via key-keyway pairs.

Abstract: The specification discloses a wringable mop including a sponge pinchingly retained within a channel, a ferrule including an integral mounting plate, a clamp, a roller-carrying bridge, and a wringer handle. A tab extends from the wringer handle through an aperture in the bridge to pivotally connect the wringer handle and the bridge. The clamp is hingedly connected to the mounting plate at two locations, and a bolt passes through the clamp and mounting plate approximately midway between these two locations to draw the clamp and mounting plate together to secure the channel and sponge therebetween. A detent tab extends from the mounting plate into an aperture in the channel to prevent the channel from shifting laterally with respect to the mounting plate.

Abstract: The disclosure teaches a new method of dental plaque removal and the structure of a brush bristle which enables the method most efficiently. A filament loop of contractable material such as polypropylene is caused to shrink as it is being attached to a base. The loop exhibits an extraordinary contraction wherein the loop is not merely reduced as expected, but by the process of this invention it contracts into tightly adjacent filaments with a tight return loop. The resulting bristle not only solves the vexing problem of proper bristle polishing, but as an unexpected additional value, exhibits a greatly improved capability to actually scoop away tooth deposits such as plaque.

Abstract: A motor for direct or coaxial drive of a disc storage, mounted in a center hole formed in a storage disc includes a rotor and a stator which form together with an air gap separating the rotor from the stator a magnetic circuit. The stator has a single-phase winding. The motor produces an auxiliary reluctance moment complementing the electromagnetic torque produced by the winding and being offset in time relative to the electromagnetic torque. Due to the positioning of the motor within the center hole of the disc a very compact construction is obtained.

Abstract: A windshield wiper device including a blade rubber, a backing holding the blade rubber in place, a support metal fixture including support claws for supporting the backing, an arm supporting the metal fixture, a spring loading the arm such that the blade rubber is forced against the windshield of a vehicle, and drive means connected to the arm for moving the arm, the metal fixture, the backing and the blade rubber in oscillating movement. The spacing interval between the adjacent two support claws is maximized at opposite end portions of the blade rubber and becomes smaller in going toward the center thereof, and a higher load is applied to the support claws near the central portion of the blade rubber than to the support claws near the opposite ends thereof, to thereby effectively avoid separation of the blade rubber from the surface of the windshield.

Abstract: The invention of the present application is a guard for limiting the opening of a door (10) with respect to the frame (12) in which it is mounted. The device includes first and second wire forms (14, 42), each having a looped extension portion (38, 46) formed in ends thereof. The looped extensions (38, 46) have apertures (40, 50) defined thereby, which apertures (40, 50) are significantly larger than dimensions of portions (36) of forms (14, 42) received within the apertures (40, 50). A compression spring (52) is disposed intermediate the looped extensions (38, 46) with coils (54, 54', 56) of the spring (52) encircling portions of the forms (14, 42) intermediate the extensions (38, 46).

Abstract: Method and apparatus for stuffing food product into shirred casing in which a stuffing machine designed to stuff fully soaked casing is adapted to the use of controllably premoisturized casing. An internal sizing ring stretches the casing to about its recommended stuffed circumference so that the stuffing pressures required to fill the casing are reduced to manageable proportions. During the clipping cycle an increase in product pressure is avoided, by creating slack during the constricting phase of the gathering and clipping operation, and by gripping more tightly with the second tie gripper than with the first.

Abstract: A pair of jaws engage the neck of a hanging freshly slaughtered carcass to deter upward movement of the carcass while the hide is pulled therefrom. The jaws are movable longitudinally in a direction parallel to the direction of carcass movement, vertically for alignment with the necks of different carcasses and laterally from a retracted position to an extended position where the jaws lie on opposite sides of the carcass neck.

Abstract: In a carding machine having cylinders, which are provided with a clothing of a saw-tooth wire helically wound thereon, carding elements are provided having saw-tooth wire sections, which are arranged at an acute angle to a plane that is transverse to the axis of rotation of the cylinders.

Abstract: A regulation of the density of the fibre clothing on cards, carding engines and the like is described which is based on measuring the torque which has to be used for the drive of the licker-in or the cylinder. The signal corresponding to this torque is compared with a desired value which is either arbitrarily adjustable or is obtained from a sliver count measuring member or constitutes a combination of the two.The torque is either measured by measuring the power consumption for the drive of the licker-in and/or the cylinder, or by measuring the torsion of a torsion shaft, or by measuring the slip occurring in a variable coupling.

Abstract: An arrangement of flat-fittings in a cotton carding machine for removing dust, husks and neps from cotton supplied to the carding cylinder fittings includes a gap extending the whole length of the flat-fittings, located in the middle portion of the surface of this fitting, facing towards the cylinder fitting, extending in a forward and outward direction with respect to the forward travel direction of the flat-fittings and in communication with free air via a dust-catching device. The dust-catching device includes a chamber which communicates with the gap and communicates with the free air through at least one opening which is covered by a filter.

Abstract: A lockable slider includes a cylindrical plug rotatably mounted in a slider body and a locking member urged at its fore end by a spring member against a cam face of the cylindrical plug for pivotal movement about the one end in response to the rotation of the cylindrical plug, whereby a locking pawl disposed at the rear end of the locking member is brought into and out of locking engagement with a pair of coupling element rows of a slide fastener. The cam face includes a recessed central portion in which the fore end of the locking member is received with the slider in locked position, and a flat peripheral portion over which the fore end of the locking member lying across the recessed central portion is disposed with the slider in unlocked position. The cam face allows the cylindrical plug to be rotated bidirectionally for either locking or unlocking the slider.

Abstract: Disclosed herein is a locking device for vehicle seat belt webbing. The device includes a fixed clamp member; a swing clamp displaceable relative to the clamp member between two positions, and a drum displaceable relative to the swing clamp between two positions and engageable at one of the two positions with the swing clamp so as to restrain itself from further rotation. The drum is displaced toward the swing clamp when a tensile force of a predetermined value or greater is applied to the webbing. When a further tensile force is exerted on the webbing, the swing clamp is displaced toward the fixed clamp member and holds the webbing firmly. Since the drum itself is locked, subsequent payout of the webbing can be substantially restrained owing to a frictional force developed between the drum and webbing. Thus, the webbing is actually locked at two locations. Since the area of contact between the webbing and the locking device, i.e.

Abstract: A plastic fastener comprises an insertion leg of the general shape of the letter V, a pair of flange pieces disposed at the free ends of the insertion leg, and a pair of head pieces extended upwardly from the respective flange pieces. This fastener assumes its complete state by causing the head pieces to be twisted sidewise and moved past each other and subsequently allowing the rear edges of the head pieces to abut against each other. Two plates can be attached fast to each other simply by inserting the combined head portion of the fastener into the perforation formed in advance in one of the two plates and forcing the insertion leg into the perforation formed in advance in the other plate. Desired separation of the insertion leg from the latter plate is accomplished by moving the rear edges of the head pieces apart from each other.

Abstract: An automatic leasing machine for a warp beam on which a warp delivered from the warp beam is grouped into separate warp sheets of different colors, and warps from a warp sheet in turn are subsequently separated from the sheet, passed through a gap between a pair of warp leasing cords which alternate positions once per one warp passing, and fixed by means of bonding tapes. The foregoing operation is repeated cyclically in a fully automatic fashion for all warps in the warp sheet in accordance with a given stripe design of the yarn dyed fancy fabric to be woven.

Abstract: New and improved ram drive chuck is provided and comprises workpiece driving means which are moveable between an extended position thereof relative to an appropriately positioned workpiece wherein the workpiece driving means are operable to drivingly engage, support and rotate the workpiece, and a retracted workpiece driving means position relative to the appropriately positioned workpiece wherein the workpiece driving means are disengaged from the workpiece. Means to positively disengage the workpiece driving means from the workpiece upon movement of the former into the retracted position thereof are operable attendant the drive of a specified form of workpiece.

Abstract: The present invention relates to a method for fixing an annular element onto a shaft. The shaft may be a camshaft and the annular element may be a cam piece or a journal piece used in an automobile. The annular element is fixed onto the shaft by: engaging an axially extending projection of the element with an axially extending groove of the shaft so as to prevent a relative rotating motion; deforming an outer wall of the shaft adjacent to said groove at two positions near the terminating ends of the projection so that the outer wall protrudes into the groove, thereby fixing the element onto the shaft.

Abstract: A process of forming a polycrystalline silicon pattern which is used for a semiconductor device, wherein the degree of side etching is low and the obtained pattern is of high precision. Firstly, a polycrystalline silicon layer is deposited on a semiconductor substrate or on an insulating film which is formed on a semiconductor substrate. An impurity is selectively ion-implanted with high concentration into the region in the layer which is to remain as a polycrystalline silicon pattern. Finally, whole of the polycrystalline silicon layer into which the impurity is thus selectively ion-implanted is plasma-etched to etch off the areas into which the impurity is not ion-implanted.

Abstract: An areal array of tubular electron sources is disclosed for producing multiple directed electron beams. Sources (10) are located in a parallel array between a conductive back plate (12) at a closed end of the tubes and a conductive face plate (14) having holes therein aligned with the second open end of each of the electrode tubes (10). An electrical current source (30) is connected between the back plate (12) and face plate (14) to resistively heat each of the sources (10) to a temperature high enough for thermionic electron emission. Electron beams (34) are produced from within each of the tubular electrodes (10). Extraction means which may include a magnetic field from a coil (29) and an extraction lens (18) tends to withdraw the electrons from within the sources (10) in an intense, collimated beam (34). Beams (34) are accelerated toward a target (28) through a beam deflection unit (22) having holes (24) associated with each of the electron beams (34 ).

Abstract: A dynamoelectric machine core, method of forming the same, and apparatus for forming the same. The core includes a stacked laminated yoke assembly having an annular array of radially inwardly opening recesses, a stacked laminated tooth assembly having an annular array of annularly spaced teeth defining therebetween winding slots, a dynamoelectric winding in the slots, and cooperating interlock means on the teeth and yoke core assemblies for locking the tooth core assembly to the yoke core assembly. The laminations are blanked out from a metal sheet and interlocked in stacked association with each other by suitable interlock structure formed therein. The teeth are blanked out from the yoke lamination and are subsequently secured to the yoke laminations of the yoke core assembly after the tooth core assembly of the teeth is provided with the dynamoelectric winding.

Abstract: A method and an apparatus for automatically mounting, on printed circuit boards, non-lead electronic components which are stored mutually independently within a multiplicity of apertures equally spaced longitudinally in a strip member and is covered with a covering tape. The covering tape is separated first by a covering tape separating assembly from the strip member so as to uncover a leading one of the apertures. A leading portion of the strip member including the uncovered leading aperture is cut off the strip member by a severing assembly consecutively. A plurality of the leading portions cut off the strip members respectively storing different kinds of components are arranged on a transfer element of a transfer assembly in a desired order and transferred to a fixed position by the transfer member. Each component stored in the cut-off leading portions is picked up, transferred, and mounted on a printed circuit board one by one.

Abstract: A method for producing multiplane circuit boards in which a plurality of planar members, each having a plurality of connecting areas disposed in rows on the planar member, each connecting area having interlinking positions and interrupting positions, with such positions in predetermined locations, are prepared. A plurality of planar members, each having trains of conductors in parallel paths at predetermined locations are also prepared. Such planar members are then stacked, one on the other, with the connecting areas and conducting paths in predetermined position and the stacked planar members are then laminated together. Selected of the interlinking positions and selected of the interrupting positions are then interconnected by drilling the laminate to form the multiplane circuit board.

Abstract: A method of reworking a printed circuit board includes nonconductively adhering a flexible circuit to the board, the flexible circuit comprising a nonconductive substrate provided with a circuit trace. The circuit trace of the flexible circuit and conductors on the circuit board are subsequently electrically interconnected at appropriate positions by establishing conductive paths which extend generally transversely with respect to the circuit board.

Abstract: A manual pipe cutter that comprises a cutting disk and a cutter-pressing jaw to press the cutting disk edgewise against a pipe to cut it, and is characterized by a pushbutton and gear arrangement for convenient operation and forceful pressing of the cutting disk edgewise against the pipe. This manual pipe cutter further comprises a body defining a cutting head portion and a handle portion, a cutting head rotatable in the cutting head portion of the body and cooperatively forming with it a pipe passage and an open mouth to position a pipe transversely into the pipe passage, a pawl and ratchet to rotate the cutting disk around the pipe, and means to release the movable jaw and return it to its outermost position.

Abstract: A hand-held cutting tool which is composed of a housing defining a bottom to rest upon a surface and includes within the housing a blade cartridge secured therein on which there are a plurality of blades swingable so that the cutting edge of each blade is exposed or retracted so that the blade is completely within the housing, the blades are rotated between the two positions defined above by means of spacer means which include an operating surface preferably exteriorly accessible on the housing.

Abstract: An improved egg scoop or spoon suitable for handling hot boiled eggs wherein the spoon bowl is itself egg shaped and is constructed so as to be easily positionable around an egg, to surround and firmly retain an egg and to provide for the drainage of fluids from the egg without its retention within the spoon bowl and the ready floatation of an egg from the spoon bowl when presented to a body of fluid.

Abstract: A handle for a hand tool comprises a shank, a sheath, and an intermediate member which fits between the shank and the sheath. The intermediate member fills the space between the shank and the sheath, to allow the sheath to be moulded to any desired external shape and yet have uniform wall thickness, and still be securely held to the shank.

Abstract: An inner diameter measuring instrument wherein the measuring pressure of measuring elements is adjustable from outside and the measuring elements can be retracted by a pair of levers. A spring is confined between a movable member secured to a spindle and an abutting member formed on the outer surface thereof with a tapered surface, and a biasing force of this spring is adjustable by the movement of the movable member due to rotation of a control member mounted to the main body of the measuring instrument. The abutting member is upwardly moved by a pair of levers each provided thereon with a pusher member penetrating through the main body for pushing the abutting member, so that the measuring elements biased in the radial directions of the spindle can be retracted.

Abstract: A hollow barrel has a shank at one end which connects to the chuck of a machine tool. A simple lamp and lens system at the barrel axis projects an image through the other end of the barrel to the work surface. The work is movable to align a mark or hole on its surface with the projected image, whereupon the work is clamped in place, the barrel removed, and the machine operation performed.

Abstract: A recreational or sportman's compass is comprised of an inner vial including a compass needle which together with an azimuth ring is resiliently mounted within a housing so as to be rotatable together or independently of one another. The vial is assembled together with the outer azimuth ring and retainer in such a way as to permit assembly of the parts into snug-fitting concentric relation to the housing without the necessity of positively fastening or affixing the vial to the housing.

Abstract: A drafting machine includes a pair of perpendicular straight edges slidably mounted with respect to reference scales integrally mounted within the drafting machine. A fine adjustment mechanism includes a worm and spur gear combination for moving the straight edges with respect to the scales. An override mechanism allows the straight edges to move freely with respect to the scales. The drafting machine preferably includes a second adjustable scales adjacent each reference scales for ease and accuracy in measuring.

Abstract: An apparatus and process for expanding the area and for drying of leather pieces, felts and other similar flat materials. On both sides of the leather elastic foils impervious to air are disposed, a vacuum is connected to the space between the two foils and then forces are applied for enlarging the area of the foils, where the forces are predominantly disposed in the plane of the foils. Thermal energy can be fed to the flat material. The forces can be intermittently applied and they can be provided preferably by hydraulic or pneumatic means.

Abstract: An arrangement for dry cooling of coke has a prechamber for a coke to be cooled with a prechamber wall, a cooler with a cooler wall, a plurality of connecting members connecting these walls with each other, so that a cooling gaseous medium can pass between the connecting members, and a plurality of throttling elements arranged between the connecting members and actuated from outside of the walls.

Abstract: A heat duct support assembly for an impingement oven having a plurality of horizontally oriented heat ducts therein, which are connected to a plenum to direct hot air from the plenum against food being conveyed through the oven. The assembly comprises two studs projecting from each of the oven opposite sides and an elongated bracket horizontally positioned between the oven opposite sides for supporting the remote ends of the heat ducts. The bracket is supported by a pair of bracket supports connected to its ends and which are adjacent to the opposite sides of the oven. The bracket supports have slots in their bottom and top edges that engage the studs in order to support the bracket between the oven opposite sides. The opposite ends of the heat ducts are supported by flanges peripherally disposed about openings in the plenum and over which the heat ducts are fitted.

Abstract: In an athletic shoe, a system for conveying air into the shoe in which an air reservoir in the resilient outsole assembly is open to a first transverse air channel which opens in turn to the surrounding air, a longitudinal air slot in the outsole assembly is open to the air reservoir, a first vertical hole in the top of the outsole assembly is open to the air slot and to a second vertical air hole in the insole board, the second vertical hole in turn is open to an air channel in the bottom of the slipsole, and the slipsole air channel is open to third vertical holes in the slipsole which open into the inside of the shoe under the user's foot; the air reservoir, air slot, first air holes and second air holes can lie on the midline of the sole assembly; and the slipsole air channels can be arranged in a grid covering the entire bottom of the slipsole with the first air holes, second air holes and third air holes arranged at the intersection points on the grid.

Abstract: An athletic shoe is disclosed. The athletic shoe includes an upper attached to a sole. The upper has a forepart section comprised of an inner layer and an outer layer. The inner layer is preferably formed of relatively thin stretchable leather and the outer layer is formed of a breathable nonstretchable material, such as nylon mesh. A slight gap is formed between the outer surface of the inner layer and the inner surface of the outer layer to allow the inner layer to stretch a limited degree in order to mold to the forepart portion of the foot of the wearer of the shoe.

Abstract: The invention provides a continuous excavating apparatus principally designed for use in mining operations and includes an elongated frame having heavy upright side walls and a mobile support mechanism. At its front end the frame mounts an endless bucket line for pivotal motion about both an upright and a transverse axis, the heavy frame providing a counterbalance for the forces generated during the excavating operation. The buckets are mounted on hinge pins whose enlarged ends engage supporting sprockets in a fashion to reduce and distribute wear resultant from normal operation, and the buckets include replaceable excavating teeth enabling ready replacement when required.

Abstract: For the ditching of drains normally various types of excavating machines are used. This involves problems, however, especially when the ground has poor carrying capacity, for example in wetlands. According to the invention, therefore, a body is proposed which has substantially V-shaped cross-section and smooth lower sides, and which is advanced through the soil masses to be removed for ditching the drain with a pointed end along the height of the body with a closed end facing in the direction of advancement. Simultaneously, the body is subjected to at least downwardly directed striking forces with relatively high frequency. In this way, the body is maintained pressed down into the soil masses while it is being advanced. The soil masses are thereby removed substantially in lateral direction by the side surfaces of the body and compacted. For effecting the striking forces, preferably a vibrator is provided within the body.

Abstract: Ironing apparatus provides supporting of a hand iron above the ironing surface of an ironing board. It includes a base for supportive disposition upon a supporting surface, upright post members extending upwardly from the base, and apparatus for securing an ironing board in a use position to one post member and proximate the other post member with the ironing surface horizontally disposed for ironing. An articulated linkage is swingably interengaged at one end with one of the post members, being extendable by articulation to positions over the ironing surface during ironing. A securement unit pivotally interconnects the other, post-remote end of the linkage with the iron for permitting its movement between first and second orientations respectively in and out of contact with the ironing board surface.