Abstract: A fluid filter device having a filter chamber and a cylindrical bypass valve mounted so as to be rotatable about its longitudinal axis between a filtering position and a bypass position. In the bypass position the fluid passes from one end of the valve through to its opposite end toward the filter outlet; in the filtering position the fluid passes through a side opening in the valve to the filter chamber and then is returned to the bypass valve before being discharged through the filter outlet.

Abstract: A twin-edged foam plastic cleaving machine having a machine frame and a drive for guiding and adjusting a band blade support, a workpiece table (including also a conveyor belt system), movable in relation to the machine frame, for receiving the block of foam plastic to be cut, a twin-edged band blade arrangement, and a truss which is disposed on the side of the band blade remote from the block of foam plastic to support the band blade against yielding both due to a tensile force exerted on the band blade and also due to the reaction compressive force.

Abstract: A windmill having a shroud rotatably mounted with respect to a horizontally rotatable vane assembly of the windmill and a directional vane mounted to the shroud to automatically position the shroud to expose half of the windmill vane assembly to the wind. The directional vane is adjustably mounted to the shroud so that the directional vane can be positioned with respect to the shroud to provide a range of positions of the shroud from a position in which the effect of the wind is at a maximum to a position at which it has no effect at all.

Abstract: A stator vane assembly for a compressor or turbine of a gas turbine engine. The stator vane assembly comprises a plurality of circumferentially-spaced stator vanes extending in a generally radial direction between radially spaced co-axial annular walls mounted co-axially on a rotor of the compressor or turbine. The vanes are flexible and are engaged at at least one position in the radial length thereof by an axially movable annular vane-deflecting member, whereby the vanes are deflectable in cross-sectional shape depending upon the axial position of the vane-deflecting member.

Abstract: A rotary piston machine of the type having a slant or precessing rotor or the type having a parallel axis rotor, such as a Wankel engine, having a rotor seal grid formed from peripheral and apex seals which are connected together at their adjacent ends by connectors, often called bolts, located in sockets in the rotor. An arcuate seal extends peripherally around each bolt in the manner of a piston ring between the peripheral surface of the bolt and the adjacent peripheral wall of the socket in which the bolt is located, to effect sealing between the peripheral walls of the bolt and the socket without inhibiting relative movement of the bolt in the socket.

Abstract: Hair is implanted in skin by stitching the hair in a manner to form loops which pass through the subcutaneous tissue and to leave a length of hair protruding from each point of entry of the hair into the skin and a length of hair protruding from each exit point of the hair from the skin. A length of hair from one such stitch is tied to a length of hair from a second such stitch. A novel frame comprising a plurality of spaced posts is suggested for holding loops of hair during the stitching. A novel needle has a diameter of about 0.003-0.006 inches and is provided with a hole for threading at its pointed end.

Abstract: A workpiece holder is provided for selectively clamping a workpiece to a work table. The workpiece holder comprises a base secured to the table, an elongated clamp member positioned above the base and generally parallel thereto, and a bending arm secured at one end to the base and at its other end to the clamp member at a point intermediate the longitudinal ends of the clamp member thus dividing the clamp member into a first and second leg. The bending arm is dimensioned so as to form a slot having a predetermined width between the base and the first leg of the clamp member. A plunger is axially received within the slot and includes an upper inclined surface adapted to abut against the first leg of the clamp member and force the first leg away from the base as the plunger is moved axially into the slot. Simultaneously, the bending arm bends so that the second leg of the clamp member moves toward the work table for clampingly engaging the workpiece.

Abstract: A trailer for a motorcycle including a hitch formed of two parallel flat plates attached to the trailer by a hinge having a transversely disposed horizontal axis. Another flat plate is sandwiched between the two parallel plates and the plates are fastened together by a pin inserted through holes in the plates to form a hinge having a vertical axis. Tubular members are mounted to the motorcycle and receive extensions adjustably mounted to the inner flat plate to thereby attach the trailer to the motorcycle. The trailer also has a resilient suspension system for the trailer road wheel which is adjustable to compensate for various loads carried on the trailer and is formed in a manner such that wind acting on the top of the trailer acts to urge the trailer downwardly to thus stabilize the trailer when in use.

Abstract: A clevis is formed from two pieces, a shank and a U-member. The proximal end of the shank is inserted through a hole in the U-member and said end is rolled outwardly to form a flange which prevents distal movement of the shank.

Abstract: A rotary regenerative heat exchanger including a rotatable disc-like matrix having an end seal comprising an arcuate portion and a diametral or chord-wise portion each comprising a pressure plate engaging the adjacent end face of the matrix and an axially-compressible resilient member acting between the housing of the heat exchanger and the pressure plate and defining a space internally of the seal portions communicating with a gallery defined by the housing and arranged to receive a pressurized fluid, the pressure plate of the transverse portion being compressively stressed between spaced parts of the pressure plate of the arcuate portion under cold conditions and the length of the pressure plate of the transverse portion being such that the pressure plates of the seal portions are substantially stress-free under hot working conditions.

Abstract: A pump or compressor includes a center inlet for directing a fluid into the open centers of a plurality of axially spaced rotatable discs or blades by which the fluid is directed radially outwardly to an outlet which is connected by a passage means to a center inlet of a second stage pumping unit. The spacing between the discs is decreased as the fluid is compressed or pressurized and means are provided on the tips of the discs to enhance the pumping action. The device, of course, can be used in reverse as a turbine.

Abstract: A receptacle containing gas and water adsorbent material for storing a pressurized breathable gaseous mixture for underwater use. The receptacle includes an auxiliary access plug for inserting the gas adsorbent material into the receptacle so that the material may be tightly packed within the receptacle and a screen to separate the gas adsorbent material from a conventional pressure reducing means.

Abstract: An apparatus for automatically opening and emptying a carton for reuse by folding the outer flaps of the carton away from the opening into the carton as the carton moves linearly in a first direction, folding the inner flaps of the carton away from the opening in the carton as the carton moves linearly in a second direction and separating the carton from the contents while the contents continue to move in a second direction. Upon separation, the carton is automatically transported to a remote location for reuse.

Abstract: Brightening agents for alkaline zincate electroplating baths; either cyanide or non-cyanide-containing; are disclosed. The brighteners are polymers characterized by recurrent units of an alkylene amine wherein nitrogen atoms are bound to an aliphatic sulfoxylated group having the formula:--R.sub.1 --SO.sub.3 Mwhere R.sub.1 is selected from the group consisting of a lower alkylene group, a hydroxy substituted lower alkylene group, a lower alkyl substituted lower alkylene group, a lower alkoxy substituted lower alkylene group, a lower alkoxy substituted lower alkene group; and M is selected from the group consisting of hydrogen, an alkali metal, zinc and ammonium; where "lower" means having from 1 to 4 carbon atoms; and where said polymer is present in an effective concentration to produce bright, ductile, uniform, non-blistering zinc deposits.

Abstract: A sight mount is provided for securing a telescopic sight to the barrel of a rifle. The sight mount comprises a bracket which clampingly engages the rifle barrel and includes an upper portion having a tongue members which extend parallel to but spaced from the axis of the rifle barrel. A sight adapter is provided to secure the telescopic sight to the bracket and includes elongated channel members which cooperate with the tongue members formed on the upper portion of the bracket so that the telescopic sight may be axially positioned along the rifle barrel. Threaded fasteners provide a means whereby the width between the grooves in the sight adapter may be adjusted so that when proper axial position of the telescopic sight is obtained, tightening the threaded members clamps the sight adapter onto the bracket and compressibly locks the tongue and groove members together thereby prohibiting further axial movement of the sight adapter, and hence the telescopic sight, relative to the rifle barrel.

Abstract: The specification describes a nozzle for welding, heating, cutting and/or flame cleaning, comprising a cutting oxygen duct with an internal mixing device, arranged in the nozzle head, for heating gas and heating oxygen. There are also metering channels, possibly arranged around the centrally placed oxygen duct, for heating gas and heating oxygen. The heating oxygen metering ducts and the heating gas metering ducts open separately into a mixing chamber. From the mixing chamber an annular heating mixture duct leads to the gas outlet nozzle shank end.

Abstract: An improved transpiration cooled turbine blade has a porous wall for the passage of coolant fluid therethrough; the wall comprising an outer porous layer, a second layer with relatively large holes, and a third layer with metering holes for the cooling fluid. There is provision for the direct passage of coolant to the edges of the blade, which edges are single layered. Slots near the trailing edge of the blade direct a portion of the cooling fluid outwardly at a right angle to the blade's concave surface to reduce drag losses due to flow separation under conditions of high blade loading.

Abstract: An attachment for a hockey helmet is provided which, when attached, obstructs the downwardly extending vision of the helmet wearer. The attachment generally comprises a flat arcuate member constructed of a flexible and opaque material. The arcuate member is attached to the helmet so that it extends forwardly of the helmet in a generally horizontal plane and below the eye opening of the helmet. Consequently, with the hockey helmet worn on the head of a hockey player, the arcuate member obstructs the downwardly extending vision of the player. Adjustment means are provided for both vertically and horizontally positioning the arcuate member relative to the helmet.

Abstract: An electrically operated valve in which the valve operating means is controlled in its opening movement by a piezoelectric element. The expansion or contraction of the piezoelectric element provides a lift force to the valve operating means while, preferably, a hydraulic or mechanical amplification stage is included to provide an exceedingly rapid mode of operation. The valve is particularly advantageous to control the multiple and discreet injections of fuel into an internal combustion engine.

Abstract: A bevel gear shimming gage is provided for determining the shim sizes for the bearings supporting the gears within a bevel gear housing. A first main housing abuts against a first bearing, a first bearing support abuts against a second bearing and a first gaging rod is received through registering apertures in the first bearing support and the first main housing and provides a means whereby the axial distance between a gaging rod reference point and a first main housing reference point may be determined. In addition, the gaging rod provides a means whereby the axial distance between reference points on the gaging rod and the bearing supports may be determined.