Abstract: A self-wringing mop having a head which is attached to a handle and having a mop holder for holding a mop unit with a crank carried by the head which can be turned for wringing the mop. Improvements reside in a clamping member configurated to be received by the head and which clamps the mop holder to the head with the crank having a crank pin which passes through the clamp member and the head and to which is attached a stem forming part of a mop spreader at the other end of the mop unit. The number of parts is reduced and are of simplified construction providing for ease of fabrication and assembly. The parts are held together by way of the crank pin on the crank which is secured to the stem on the mop spreader.

Abstract: Safety arming solenoid for use with missiles. Pivoted jaw means retain the end of an arming wire or cable that connects to the missile. A solenoid controls opening of the jaw means. The solenoid is a rotary type having a stem with an end part positionable angularly to restrain the jaws against opening or to release them. In a modified form, a second coil is provided whereby the solenoid armature has linear as well as angular motion for actuating the jaws in response to linear movement.

Abstract: A device or mechanism which converts rotary motion into linear motion. The mechanism is well adapted for converting rotary movement of a pulley which is driven by a stepper motor responsive to signals from a computer into linear motion of a magnetic head. The magnetic head is mounted on guides for linear movement with respect to a record. A flexible metal band is wrapped around and attached to the driven pulley, the ends of the band extending tangent to the pulley and parallel to each other, the ends being secured to the block or carriage carrying the magnetic head. Angular movement of the pulley tends to unwrap one end portion of the band and to wrap the other portion thereby moving the block carrying the head linearly.

Abstract: Securement of flat heat exchange surfaces, particularly fins to tubular conduits of a heat exchanger. The heat exchange material is formed into upper and lower, or first and second pieces having longitudinal, partially circular recesses parallel to the length of a tube for engaging opposite sides of the tube. The radii of the recesses corresponds to the outer diameter of the tube. The recesses extend through less than 180.degree. so that the flat parts of the heat exchange surface are spaced leaving a gap prior to securement to the tubes. The two pieces are initially formed to interengage in such a way that they can be joined by lock seaming on opposite sides of the tube. Forces are applied to the interengaged pieces, forcing them together, stretching the heat exchange material at the recesses, thereby producing a tight interference fit between the heat exchange surfaces and the tube to provide minimum resistance to conduction of heat and at the same time securing the pieces together by lock seaming.

Abstract: Securement of flat heat exchange surfaces, particularly fins to tubular conduits of a heat exchanger. The heat exchange material has longitudinal, partially circular recesses parallel to the length of a tube for engaging opposite sides of the tube. The radii of the recesses corresponds to the outer diameter of the tube. The recesses extend through less than 180.degree. so that the flat parts of the heat exchange surface are spaced prior to securement to the tubes. Forces are applied normally to the surfaces, forcing them together, stretching the heat exchange material at the recesses, thereby producing a tight interference fit between the heat exchange surfaces and the tube to provide minimum resistance to conduction of heat. Securement may be by spot welding, riveting, or otherwise. The tube remains round and undeformed so the cross sectional heat exchange area remains the same.

Abstract: A protective armor device adapted for use with machines having openings, particularly slot openings such as bill changers and the like. An armored frame is provided that can be secured to a machine with an opening such as a slot overlying the slot opening in the machine. The armored frame has a rigid bar adjacent to and overlying the slot opening. It also has a protective shield spaced outwardly from the opening and the bar, having a top edge at a level above the bar. The spacing of the bar and the top edge and the height of the top edge is set so that it is impossible to insert a crowbar or the like into the opening in the face plate and in the machine.

Abstract: Apparatus for use in fabricating pleated materials, particularly for forming pleats in drapery materials such as swags and cascades. The apparatus greatly facilitates and eliminates some certain hand operations. A plurality of parallel upstanding spaced members is provided. The members are connected by adjustable lazy tongs means so that the members are adjustable to a desired uniform spacing. The members may be either straight or they may be of curved configuration for making swags. The material is placed over the members and then uniform pleats are formed over the members with the pleats then being held to the members by holding devices. The members are constructed so that they can be manipulated or actuated to hold all the pleats which are then secured by stapling prior to the removal of the completed material and final fabrication.

Abstract: A tri-axis crash survivable seat, utilizing a plurality of energy absorbers, which are swivel mounted to the seat bucket and also to a frame where the frame is securely fastened to the structure of a rotary wing or fixed wing aircraft. The energy absorbers are utilized in upper, intermediate and lower pairs, each having different energy absorbing characteristics, stroking distances, and force-displacement relationships from the other pairs. The energy absorbing devices attach to the bucketseat and supporting frame so as to permit tri-axial energy absorption during impact for various vertical or combined vertical impact angles. Each of the intermediate pair of energy absorbing devices is a two stage device designed to minimize the dynamic overshoot associated with the elasticity of the human body, such that a reduced probability of injury is obtained. Energy is dissipated in a controlled manner through the process of the displacement of the seat relative to the craft under arbitrary crash conditions.

Abstract: A hose end protector is disclosed herein intended to be carried on the end of a hose so as to surround and forwardly project ahead of a threaded coupling for its protection. The protector includes an elongated guard skirt having a connection portion adapted to engage with the hose so that the guard skirt extends about the threaded coupling in spaced relationship whereby the threads of the coupling are protected from damage. In one form, the connection portion includes internal threads matable with the threaded coupling and in another form, the protector is in two parts threaded together, the inner part having internal threads matable with the hose coupling.

Abstract: A record drive and positioning assembly particularly adapted for disc records used for recording of digital information and for use in association with computers. The unit embodies a record driving spindle or hub and clutch. The record is insertable into the unit through a hinged door. Ejector mechanism is provided in association with a latch, the ejector being operative to eject the record unless it is inserted fully in a latching position. The mechanism provides for "feel" so that the operator will know when the record is fully inserted. During closing of the door, a pin will unlatch the ejector allowing the ejector to move the record sufficiently to cause it to accurately register with the driving hub and clutch. When the door is opened by being lifted, the ejector will eject the record from the unit.

Abstract: A pilot operated ball cock valve for controling the height of fluid in a tank. The rotary pilot valve has an inlet port and an outlet port which are interconnected and communicate with a fluid channel which bypasses an evacuation chamber and a diaphragm valve permitting fluid to flow directly to the inlet port of the rotary pilot valve. The outlet port of the rotary valve is positioned by a predetermined fluid height in the tank into alignment with a fluid channel which transmits fluid pressure into a pressure chamber above the diaphragm. Such positioning allows fluid pressure to act upon the diaphragm which closes a discharge orifice thereby preventing flow of fluid into the tank. A decrease in fluid height in the tank induces the rotary pilot valve to rotate such that the outlet port will move out of alignment with the fluid channel leading into the pressure chamber.

Abstract: A carpet seaming tape comprising a tape base with yarns thereon and having a layer of adhesive thereover with a plurality of spaced apart rows of adhesive formed thereon and extending longitudinally along the tape. The yarns have a heat sealant emulsion rolled onto their backs. The layer and rows of adhesive are melted upon the application of heat, and the heat sealant maintains the adhesive above the tape base so as to be available for securement to the carpet. The backs of two adjacent portions of carpet are then pressed against the tape and are bonded thereto providing a seamless appearance.

Abstract: A noise suppression circuit adapted for use with bifilar windings such as normally present in magnetic pick-up heads. The signals from the windings are coupled to a pair of operational amplifiers having a common gain control resistor for filtering out common mode noise. The first stage amplifiers are coupled to a pair of second stage amplifiers biased at the voltage of the bifilar windings and have resistance-capacitance filter circuits. The second stage amplifiers are coupled to a third stage amplifier which transforms the signal to digital form, the remaining noise appearing as spikes in the signal. The output of this amplifier is coupled to a digital noise filter circuit which includes a one-shot multivibrator coupled to a flip-flop arranged to control the digital waveform so as to filter out the spikes, that is, to eliminate the noise in the signal.

Abstract: A variable mirror having a reflecting surface which can be formed to have a curved, that is, a convex or concave contour to provide variable degrees of magnification. The mirror is adapted for utilization in a compact or vanity case, or the like. Various mechanisms are provided for varying the degree of curvature and magnification of the mirror, these means preferably being manually actuatable.

Abstract: A support system for an object such as a crashworthy aircraft crew seat which is floor mounted will isolate the seat from floor distortions as well as floor vibrations which would otherwise be introduced into the seat. The floor distortions occur only during a severe crash or impact. The floor vibrations occur continuously during normal flight as well as during maneuvers which could increase or decrease from a nominal level of relatively high G forces as they are transmitted from the floor. The invention provides a plurality of vibration and distortion isolating units from which the chair is supported at a plurality of points. The isolation units are circular holding members made of resilient material with crushable metal inserts in the resilient material. Supporting pins or members pass through the metal inserts in the isolation units. The isolation units are carried by rail guides constructed to translate along rails. The isolation units provide the capability of plus or minus 10.degree.

Abstract: An improvement in gas operated firearms having means for regulating the flow of gas from the barrel of the firearm to the piston which operates the action of the firearm. The improvement is a device which eliminates the necessity of having to change the barrels to accommodate different types of ammunition and loads. The improvement embodies a combined gas regulator and piston receiver associated with the reciprocating piston that actuates the action of the firearm. The combined gas regulator and piston receiver is reversible and in either of its positions fits in sealing relationship against the member which depends from the barrel of the gun and contains the gas orifices that deliver the gas from the barrel, to the regulator. The regulator-receiver has a bore that fits on the forearm shaft. Equally angularly spaced axial passageways are provided of partial circular configuration at the internal diameter of the regulator. An axial bore or passageway is also provided through the regulator.

Abstract: A reading stand is provided having a base and holder for holding material to be read in a predetermined position. The base supports a frame which carries a magnifying glass in a position to magnify the reading material and to be easily seen. The holder for the reading material is adjustable from the front part of the device towards and away from the magnifying glass. The frame provides simplified up and down and transverse adjustments of the magnifying glass relative to the holder.

Abstract: A bow compass, the parts of which are formed by a plastic injection molding process. The compass is provided with a fine adjustment by threaded means and also a quick adjusting coarse adjustment. The compass minimizes screw threading operations, there being a threaded barrel nut which like the other parts is formed by plastic injection molding.

Abstract: A watering device for growing plants. A container which may be a flower pot filled with soil or the like which has an aperture in the bottom. A second container for water is provided below the first container. A rigid probe having a central bore is provided that can be inserted through the aperture in the bottom of the first container or pot and extended up into the earth in the container. A wick has a part immersed in the water and a part extending up through the bore in the probe and is then wrapped around the probe and fastened. The probe is axially slotted to allow moisture to be drawn up through the wick and to transfer to the convolutions of the wrapped wick and for dissemination into the soil in the container.

Abstract: An electric generator is driven by one or more steam turbines through gear train means, embodying one relatively large gear which serves the purpose of a flywheel, serving to stabilize the speed and voltage and frequency output of the generator. The system adapts itself particularly to conversion of the steam power plants of reserve vessels to floating, electric power generating stations by disconnection of the propeller shaft from the main or bull drive gear and installation of the electric generator.