baber/WOPTO huggingface dataset:
Patent GB-777116-A (GB)
Title: Improvements in or relating to the measurement of voltage differences in electrical circuits
IPC: G01R19/10
Filed: 1954-02-26
Abstract: 777,116. Condenser arrangements. GUSTAFSSON, G. V. A. Feb. 26, 1954 [Feb. 28, 1953], No. 5793/54. Class 38 (4). [Also in Group XXXVI] Apparatus for measuring a voltage difference (e.g. a bridge unbalance voltage) comprises a potentiometer with whose output the voltage difference is compared, energized from a unidirectional voltage supply by a transfer condenser and double pole double throw switch alternatingly connected between the supply and a supply condenser across the potentiometer. Fig. 2 shows a device for potentiometrically measuring a voltage (e.g. the unbalance voltage of a bridge) wherein a supply capacitor C2 is alternatively and continuously switchable to a battery B also energizing the bridge and to a reservoir condenser C1 across which a unidirectional voltage is thus maintained to energize a preset potentiometer S, T and a measuring potentiometer P which develop a voltage in series with a galvanometer G opposed to the unbalance voltage of a resistance (e.g. straingauge) bridge R1 to R4, potentiometer P being adjustable to a null deflection of the galvanometer at which its position represents the unbalance voltage. In modifications (Figs. 3, 4, not shown) a pair of supply condensers are alternatively and continuously switched between a voltage source and the reservoir condenser so that one supply condenser is charging while the other is discharging, and vice versa; while in Fig. 5 the potentiometers S, T and P are energized from a battery B1 in series with a resistance R5; supplemented by a voltage developed across a reservoir condenser C1 charged from condenser C2 which is alternately charged from battery B and connected for discharge into condenser C1. The apparatus may be applied to the measurement of other voltages; e.g. those derived from thermocouples and the measuring potentiometer may be automatically adjusted by a servomotor responsive to galvanometer G and driving a recording device.
Patent GB-281907-A (GB)
Title: Improvements in and connected with iceless power freezers
IPC: F25B23/00
Filed: 1927-03-02
Abstract: 281,907. Demarco, S. March 2, 1927. Refrigerating, compression machines for; ice-cream freezers.-The freezer C and the compressor A of an icecream freezing machine are mounted upon the condenser which is sunk into the floor to economize space, the compressor being secured to the condenser by bolts slidable in T-slots E.
Patent GB-1111633-A (GB)
Title: Commutator torquer
Inventor: HANNA SAMUEL C
IPC: G01C19/30
Filed: 1967-02-07
Abstract: 1,111,633. Electric motors. GENERAL PRECISION SYSTEMS Inc. 7 Feb., 1967, No. 5831/67. Heading H2A. In a D.C. torque motor similar to that described in Specification 958,748, the commutator connections are simplified and rendered more secure by providing the segments 76 with integral extensions 74 which are bent over into the slots at 78, and there soldered to the winding leads 68, 70, and embraced by the same slot-insulation 94, thus serving to support the commutator in the rotor housing 32. The commutator is made by bonding a large washer-shape sheet of copper foil to the face of a much smaller insulating board 72, separating the segments and integral connectors, e.g. by etching, and bending the connectors to L-shape to enter the armature slots. The commutator is cemented to the rotating housing 32. The brushes are mounted on the permanent magnet stator as in the earlier Specification. The connectors are covered with insulation 92, e.g. epoxy resin. The coil-ends are bonded in insulation 96. The stator may be outside the rotor.
Patent GB-830517-A (GB)
Title: A rotary valve for controlling the flow of liquids
Inventor: JACKSON HAROLD ERNEST
IPC: F15B13/02
Filed: 1956-02-24
Abstract: 830,517. Variable speed ratchet gear. TECALEMIT Ltd. Feb. 1, 1957 [Feb. 24, 1956], No. 5855/56. Class 80 (2). [Also in Groups XI and XXIX] A variable speed ratchet gear connecting the spindle 30A of a rotary valve with a pinion 14 driven by an electric motor comprises a gearwheel 15 meshing with the pinion 14 and connected to a cam 16. The latter engages a roller 20 on the end of a rocker arm 22 urged anticlockwise by a spring 23 and connected to the spindle 30A of the rotary valve by a one-way clutch comprising a centre member 28 keyed to the valve spindle 30A and an outer cylindrical member 26 secured to the rocker arm. Spring- urged rollers 36 are disposed in tapering recesses in the clutch centre member 28 and are adapted to jam between the centre member and the outer member on clockwise rotation of the rocker arm. A similar clutch connects the centre member and a part of the valve housing and prevents anti-clockwise rotation of the centre member. The inward adjustment of a stop pin 126 acting on the rocker arm reduces the time period during which the roller 20 is in contact with the cam 16 and thus determines the speed of the valve spindle 30A, the adjustment varying the speed between zero, when the roller never contacts the cam, and a maximum, when the roller never loses contact with the cam. The stop pin may be actuated by a solenoid controlled by a thermostat responsive to the heat of a burner controlled by the rotary valve.
Patent GB-1206251-A (GB)
Title: Electric power generator
Inventor: ROESEL JOHN FRANKLIN JR
IPC: H02K19/16
Filed: 1969-02-04
Abstract: 1,206,251. A.C. generators. J. F. ROESEL. 4 Feb., 1969, No. 5891/69. Heading H2A. An A.C. generator comprises a rotor 1 consisting of a core 3 of high permeability ferromagnetic material, e.g. laminated silicon iron, surrounded by a layer 4 of high retentivity magnetic material e.g. laminated cobalt steel or barium ferrite, excitation and generator windings 6, 10 being located adjacent the rotor on cores 5, 9 respectively. At a constant rotor speed, excitation winding 6 imposes a standing pattern of poles on the rotor layer 4 which produce an output at. winding 10 of the same frequency as the input. Should the rotor speed vary, the consequent redistribution in the pattern of magnetization of layer 4 will maintain the output frequency constant. A capacitor may be connected in series or parallel with coil 6 to improve the power factor of the excitation circuit and feed-back connections may be provided between the output and excitation source in order to regulate the output voltage.
Patent GB-1285782-A (GB)
Title: Improvements in and relating to optical systems
Inventor: BRIGGS DAVID ANTHONY
IPC: G02B5/30
Filed: 1969-02-04
Abstract: 1285782 Optical systems PLESSEY CO Ltd 2 Feb 1970 [4 Feb 1969] 5922/69 Heading G2J An optical system comprises a bi-refringent plate 2 to separate two mutually perpendicularly plane polarized light rays E, O, a rotator 4 to rotate each of their planes of polarization through substantially 90 degrees, and a bi-refringent plate 6 which is orientated so that any astigmatic effect produced by the plate 2 tends to be corrected by the plate 6. The E ray at plate 2 is deflected. vertically and two mutually perpendicular components thereof are thus subjected to different deflections so that the ray exhibits astigmatism. The O-ray, not being deflected, exhibits no astigmatism. The plate 6 is orientated at 90 degrees to plate 2 so that after passing through the rotator 4 (which may be a half-wave plate) and plate 6, each E ray component will have been subjected to the same total deflection thus any astigmatism is cancelled. In another embodiment, Fig. 2 (not shown), the path lengths of the E and O rays are equalized by auxiliary bi-refringent plates (26), (66) placed adjacent plates 2, 6 respectively to introduce deflections in the O ray only. In both embodiments the emerging E and O rays may be used in a split angle digital light deflector or in systems producing holograms.
Patent GB-682371-A (GB)
Title: A toy or game apparatus requiring skill
IPC: A63F9/00
Filed: 1951-03-12
Abstract: 682,371. Game apparatus; wheeled toys. SCHNEIDER, H. March 12, 1951. [March 13, 1950 ; Nov. 17, 1950] No. 5963/51. Classes 132 (ii) and 132 (iii). A projectile comprising a smooth axle 1 carrying rubbertyred wheels 2 is rolled between skittles 6 by competing players who each have a smooth curved stick 4 which is laid on the axle, convex side down, and pressed down. Nets 7 on posts 8 are provided.
Patent GB-808718-A (GB)
Title: Asbestos-containing vinyl floor tiles and compositions therefor
IPC: C08K5/098
Filed: 1957-02-22
Abstract: Compositions comprising an intimate mixture of a polyvinyl resin, asbestos and a pigment are stabilized by 3.5 to 10.0 per cent by weight of resin of zinc salicylate or a mixture of zinc and calcium salicylates comprising up to 60 per cent by weight of calcium salicylate.  Specified resins are polyvinyl acetate, polyvinyl chloride, vinyl acetate-vinyl chloride copolymers and vinyl chloride-vinylidene chloride copolymers.  Specified pigments are chrome oxide green, lead chromate yellow, phthalocyanine blue and titanium dioxide.  The compositions may also contain lubricants, e.g. lead stearate, calcium stearate, barium stearate, heavy metal ricinoleates, paraffin wax, carnauba wax, montan wax, mineral oils, stearic acid and lauric acid, plasticizers, e.g. dioctyl phthalate, butyl benzyl phthalate, dibutyl phthalate, tricresyl phosphate, triphenyl phosphate, triethylene glycol esters of low molecular weight fatty acids and epoxy resins, and fillers, e.g. clay and calcium carbonate.  In examples comparison is made with compositions stabilized with lead salicylate.  The compositions may be used for making floor tiles.
Patent GB-1299563-A (GB)
Title: Ethylene-propylene rubber insulated cable
Inventor: GARNER OSCAR G
IPC: B29C48/06
Filed: 1971-03-05
Abstract: 1299563 Cables GENERAL CABLE CORP 5 March 1971 6091/71 Heading H1A An electrical cable has a conductor 10, a polyethylene semi-conducting shield 12 and insulation 14 comprising an ethyleno-propylene rubber compound which fusion bonds to the shield. Other layers of semi-conducting and insulating materials, 16, 18, respectively, may be present. The ethylene-propylene rubber compound preferably contains polyethylene for fusion bonding to the shield. The conductor 10 may be stranded and the shield desirably presents a smooth surface to the ethylene-propylene rubber compound which is cured and bonded to the shield. The lack of shrinkage of the ethylene-propylene rubber compound ensures that the shield is free of any radial pressure, which is therefore not forced into the interstices of the stranded conductor. The ethylenepropylene rubber compound can contain 20 to 80% by weight of ethylene-propylene copolymer and 0 to 49% by weight of polyethylene, the balance being reinforcing and filler materials. The conductor shield can be a cross-linked polyethylene with a higher softening point than that of the insulation before curing. Dicumyl peroxide can be included in the insulation and shield compounds so that the shield and insulation can be cross-linked to one another. The shield and insulation are preferably applied in a tandem extrusion process and cured simultaneously (Figs. 2, 3, not shown).
Patent GB-959714-A (GB)
Title: Improvements in or relating to light-current contact-making relays
Inventor: BRAY FREDERICK HARRY
IPC: H01H57/00
Filed: 1962-02-16
Abstract: 959,714. Piezo-electric switches. STANDARD TELEPHONES & CABLES Ltd. Feb. 15, 1963 [Feb. 16, 1962], No. 6131/62. Heading H2B. In a relay comprising an operating element formed by a strip of a piezo-electric material 2, e.g. of lead zirconate/titanate with conducting films 3, 4 and contact springs 11, 12, when an electric potential is applied between the films 3, 4, the strip 2 is deflected and contact material 9 makes contact with spring 11. The strip 2 and contact springs 11, 12 are contained in an enclosure which is evacuated or filled with an inert gas. In the operating element, overlying the films 3, 4, e.g. of silver, are insulating films 5, 6 and conductive films 7, 8 with portions 9, 10 of contact material, e.g. of diffused gold. The release of the relay is provided by the resilience of strip 2, but it may be aided by an electrical release bias. In other embodiments, a make or break contact relay may be made by dispensing with films 6, 8 or 5, 7 respectively or the strip may have a rest position between the two contact springs 11, 12, Fig. 9 (not shown), and is made to deflect in either direction depending upon the polarity of the applied potential. In further embodiments, the contact making element may be a strip projecting beyond the end of strip 2, bridging two contact members, Fig. 2 (not shown), an insulating stud acting on a pair of contact springs, Fig. 3 (not shown), or in Figs. 4, 5 (not shown), the strip may be formed with three separate parallel fingers, or wires placed within the strip may provide the contacts. In other embodiments, the operating element and contact springs are clamped at the same end of the enclosure, Figs. 11, 12, 15 (not shown).
Patent GB-433799-A (GB)
Title: Improvements in or relating to guards or safety devices for machines
IPC: F16P3/04
Filed: 1934-02-26
Abstract: 433,799. Machinery guards and safety devices. BROUGHTON, G. J., Security Works, Vere Street, Birmingham. Feb. 26, 1934, No. 6155. [Class 80 (iv)] A guard for machines particularly presses, stamps and the like, comprises a guard member movable by hand to an operative position and associated with a member or stop adapted to be moved between the engageable members of the machine clutch, the arrangement being that said stop or member positively prevents said clutch members being moved into engagement until the guard member is moved to the operative or safety position, such movement of said guard member withdrawing said stop or member from the position between the clutch members. Further, a safety stop is provided to prevent inadvertent operation of the machine whilst the guard is in the raised or inoperative position. The invention is described as applied to a power press in which the die is actuated by a crank on a shaft 10 adapted to be rotated through a clutch. The danger zone is adapted to be enclosed by a guard consisting of two end frames 13 connected by a front frame 14, the frames being covered by a grid of wire mesh. This guard is mounted on a transverse shaft 15, and each end frame has an extension 16 clamped adjustably between an arm 17 on the shaft and a plate 18 bolted thereto. The guard is balanced by weights 38. The arm 17 has a boss to which is secured an arm 21 connected by link 23 to a sliding rod 26 which in turn is connected by linkage 29, 30 to a shaft 31 on which is mounted the stop arm 33 held by a spring normally in the path of the movable clutch member. The clutch cannot be operated until the guard 13, 14 has been lowered by hand into the protective position, and further the guard cannot be raised while the clutch members are engaged, the stop arm 33 being prevented by the clutch from moving. To prevent operation of the machine whilst the guard is raised and due to inadvertent or accidental over-running, a plunger 39 is connected by a link 41 to a crank-pin 42 on the main shaft 10. While the guard is raised, the rod 26 acts as a stop to plunger 39, but when lowered, the rod 26 is moved so that a slot 44 comes opposite the plunger and permits it to reciprocate.
Patent GB-1386573-A (GB)
Title: Automatic removal of vessels in prespinning machines
IPC: B65H67/04
Filed: 1973-02-08
Abstract: 1386573 Sliver can exchanging apparatus TEMATEX SpA 8 Feb 1973 6171/73 Heading D1F In a tow to sliver converting machine a can changer comprises a rotatable frame with radial arms 20 between which cans are held. The frame is rotated intermittently to transport the cans from a can loading station first to a sliver loading station and then to a can unloading station. The frame moves by one step each time a full can is sensed by a sensor in a delivery head A2. A rotary platform A3 rotates the cans at their filling station. Empty cans arrive at the frame by an input device C2. The frame 10 may be supported and guided by rollers and driven by a gear as illustrated in Fig. 4 (not shown).
Patent GB-256876-A (GB)
Title: Improvements relating to means or devices for securing luggage or other impedimenta on automobiles
IPC: B60R9/02
Filed: 1926-03-05
Abstract: 256,876. Westmoreland, A. G., and Wiseman, S. March 5, 1926. Detachably securing receptacles to running boards of vehicles and other flat bases.-In a luggage-guard for motor vehicles comprising a plurality of pivotally connected bar members, the outer end of one or both of the outer bar members 7, 7<a> is provided with a readily adjustable screw clamp device 10 having a pivotal connection 13 or 13a with the bar member. The bars 7, 7a may be connected by adjustable links 8, 9 which are secured together by a clamping nut 15, or a single link may be used, the clamping nut being placed at the pivot 8<b> or 9<b>. A clamping nut 17 may be used to lock the upright 7a to the clamp 10. The links are extended so as to lie alongside the edge of the running board when out of use.
Patent GB-145109-A (GB)
Title: Improvements in appliances for effecting heat-transference between gases, vapours orliquids
IPC: F22G3/00
Filed: 1919-03-12
Abstract: 145,109. Lewis, W. Y. March 12, 1919. Superheating-tubes with internal baffles.-Apparatus such as steam superheaters are constructed with vertical series of units, the circulation within them being so arranged that the direction of flow within and without is the same in each unit but opposite regarding the apparatus as a whole. In the example shown, the heating medium flows upwards outside the close-ended tubes 1, the steam within the tube enters at 11 and passes through the passage 12 in the thickness of the plate header 5 to the underside of the baffle 2, along the tube and returns on its upper side, being thence conveyed by passages 6 and hole 7 to the under side of the tube 1 next below it and so on.
Patent GB-766218-A (GB)
Title: Improvements in or relating to fuel injection pump control devices
IPC: F02D1/00
Filed: 1955-03-02
Abstract: 766,218. Starting and stopping direct-injection engines. FIAT SOC. PER AZIONI. March 2, 1955 [April 30, 1954], No. 6195/55. Classes 7 (3) and 7 (5). A control device for the control rod 2 of a fuel injection pump includes a starting mechanism 5, Fig. 2, permitting the rod 2 to move to an excess fuel supply position for starting, and a separate stopping mechanism 18, Fig. 4, for moving the rod 2 to the cut-off position, which mechanisms are enclosed in a casing 1 separate from the casing of the governor controlling the rod 2 and so arranged that they do not partake in the movements of the control rod 2 during normal running. The starting mechanism comprises a lever 5 axially slidable on a pivot 7 and carrying a stop 4 which normally determines the maximum supply position of the rod 2. For starting the lever 5 is pressed downwards against a spring 10 by rotation of a crank 13 having a crank-pin 14 which engages a disc 8 on the boss 6 of the lever 5, whereby the stop 4 is moved out of the path of the rod 2, permitting it to move to the excess supply position. The initial position of the stop 4 is adjusted by a screw carrying a pair of discs 11 between which engages a pin 9 on the disc 8. The stop mechanism, Fig. 4, comprises a lever 18, preferably pivoted on the same spindle 7 as the start mechanism, which is normally out of engagement with the rod 2 and is rotated to move it to the stop position. The stop and start mechanism may be actuated directly or through servo motors and the stop lever 18, when inoperative, defines the start position of the rod 2. In Fig. 6 the control rods 2 of two or more pumps are operated conjointly by a spindle 30 having arms 29 connected to projections 27 on the control rods. An arm 37, Fig. 9, fixed to the spindle 30 is engaged by a lever 35 actuated by a pull rod 34 to rotate the spindle 30 to move the control rods 2 to the stop position. A stop 38, Fig. 10, carried by a lever 38 is arranged to be contacted by an adjustable stop 39 on a second lever 40 fixed to the shaft 30 to prevent the control rods 2 moving beyond the normal maximum fuel supply position. For starting, the lever 38 is rotated by a pull rod 67, whereby the stop 38' is withdrawn, permitting the lever 40, and hence the shaft 30 and control rods 2, to move to an excess supply position. The normal maximum supply positions of the rods 2 may be adjusted separately by set screws 26, Fig. 8a, carried in oval plates 33 bolted to the pump housings after which adjustment the arms 29 of the spindle 30 are connected to the rods 2 and the plates 33 are removed and re-fitted with the set screws 26 out of alignment with the rods 2.
Patent GB-471196-A (GB)
Title: Improvements in manually propelled road and water vehicles
IPC: B62M1/14
Filed: 1936-03-02
Abstract: 471,196. Hand driving-mechanism for vehicles and boats. JONES, J. E. March 2, 1936, No. 6244. [Class 136 (ii)] [Also in Group XXXIII] In driving-mechanism for vehicles and boats of the type comprising a doubleacting oscillating hand lever carrying two pawls adapted to be in alternate driving-engagement with two toothed wheels, both toothed wheels are loosely mounted on the oscillating shaft, one on each side of the lever, and the alternate rotation by the pawls (which are pivoted one on each side of the lever) of the toothed wheels in opposite directions is converted into a unidirectional drive by transmission mechanism including a crown wheel engaging directly, or indirectly through chain drives, with both the wheels, or by a separate transmission gearing from each of the wheels, with a reversing gear in one of the transmission gearings. As applied to a three-wheeled vehicle, the hand-lever 2 is fixed at its lower end to a transverse shaft 3 mounted in bearings 5 fixed to the vehicle frame 4, and is provided on opposite sides with two pawls 6. 6a, each engaging a toothed wheel 7, the wheels 7 being freely mounted on the shaft 3 and provided with bevel teeth meshing with a crown wheel 8 on a shaft 9 geared to the rear or driving wheel of the vehicle, whereby the opposite and alternate rotations of the wheels 7 produced by backward and forward oscillations of the ]ever 2 are converted into a unidirectional drive. In a modification, the same result is obtained by means of separate drives from the wheels 7 to the wheel axle or to an intermediate shaft, one drive having reversing gearing. In order to reverse the vehicle, the pawls 6, 6a are swung over on their pivots so as to engage their opposite ends with the wheels 7, their actuating springs 10 being shifted for this purpose. The lever 2 is provided with a rotatable steering-wheel 16, which is either connected directly to a coaxial steering-shaft, or, as shown, is geared to a parallel steering-shaft 17, the lower end of which carries a pulley 19 projecting through an opening into the hollow shaft 3. Wound upon the pulley 19 is a cable 20, the opposite ends of which pass in opposite directions over guide pulleys 21 to another pulley, or to a transverse slide rod 22, connected to the front steering wheels by bell-cranks and rods 24 or other connections. The mechanism may be employed for rotating the propeller or paddle shaft of a boat.