baber/WOPTO huggingface dataset:
Patent GB-752136-A (GB)
Title: Improvements in or relating to digital servomotor
IPC: G05D3/18
Filed: 1954-05-10
Abstract: 752,136. Selsyn machines. NORTHROP AIRCRAFT, Inc. May 10, 1954 [July 31, 1953], No. 13537/54. Class 35. A step-by-step selsyn motor with magnetized rotor 6c has two stator windings 6a, 6b in quadrature fed with successive impulses to produce rotation in the required direction. In the form of supply circuit shown, impulses are supplied from a source 1, e.g. an electronic digital computor, to operate a relay 2 which serves to energize the motor from a battery 4, and a relay 3 which controls the polarity of energization of winding 6a and so determines the direction of rotation of the motor. In the rest position shown, the rotor is locked in position by current passing from battery 5 through limiting resistance R1 and winding 6b. When an impulse is delivered to relay 2, it momentarily closes contact 2a thus connecting battery 4 to the motor windings. Depending on the setting of relay 3, a current impulse passes in one direction or other through blocking condenser C1 and winding 6a, and also through resistance R1 and condenser C2 to winding 6b, which is shunted by further resistance R2 and condenser C3. The values of resistance and condenser are such as to produce two complete halfturns at each current impulse. The rotor 6c is laminated and is slotted to provide salient poles, and it carries damping windings in further slots and is preferably either of permanent magnet material or carries a D.C. exciting winding. If desired the motor may have centre-tapped windings so that the reversing relay 3 may be dispensed with. In a modification the winding 6a is fed through a transformer or choke winding, the winding 6b being connected to a centre-tap on the choke winding or a secondary winding. In a further modification, the windings 6a, 6b are connected to rings of contacts engaged selectively by coupled arms connected to the batteries 4 and 5 respectively, so that a complete rotation of the switch spindle causes the windings to be energized in succession to produce a complete rotation.
Patent GB-775619-A (GB)
Title: Improvements relating to capseals for container closures
IPC: B65D41/42
Filed: 1955-05-12
Abstract: 775,619. Bottle &c. capsules. AMERICAN FLANGE & MANUFACTURING CO., Inc. May 12, 1955 [May 12, 1954], No. 13749/55. Class 125(3). A destructible capsule with top 1 and gasket 3 has its skirt provided with diametrically opposite ears 5, 6 each having the metal of its periphery turned down at 11, the ears extending from score lines 7, 8 and having the turned down rim ending in abrupt shoulder portions 25. In a modification, Fig. 5, the ear is folded back under on itself at 17.'
Patent GB-560474-A (GB)
Title: Improved precision depth gauge
IPC: G01B3/28
Filed: 1942-10-03
Abstract: 560,474. Gauges. PARKER, S. J. Oct. 3, 1942, No. 13902. [Class 106 (ii)] In a depth gauge having a rule 4 slidable in a channel 3 formed in a body part 1, means are provided for retaining the rule in selected positions, the means comprising a set screw 9 threaded into a bore in the body part, a pressure block or clamping member 12 of brass or other metal or alloy, and a rubber paid or cushion 13 interposed between the set screw and the block. The body part 1 carries a vernier plate 5 and has bridge plates 7 to hold the rule 4 in the channel 3.
Patent GB-311936-A (GB)
Title: Improvements in aneroid barometers
IPC: G01L7/00
Filed: 1928-05-11
Abstract: 311,936. Heath, G. A., and Stanley & Co., Ltd., W. F. May 11, 1928. Barometers.-Instead of the hand of a barometer being adjusted by a screw which moves the bridge piece holding the spring pulling against the vacuum chamber, access to such screw being obtained through the back of the case, the screw C is mounted parallel to the back of the case and is operated from the side of the latter. One of the pillars B supporting the movement is drilled and screwed to receive the screw C the round end of which engages a tapered projection on the bridge D. In a modification, the end of the screw is tapered and engages a rounded projection on the bridge D.
Patent GB-1138958-A (GB)
Title: Semiconductor devices
IPC: H01L23/42
Filed: 1966-03-29
Abstract: 1,138,958. Transistors. HITACHI Ltd. 29 March, 1966 [29 March, 1965], No. 13913/66. Heading H1K. In a device comprising a unipolar transistor in a sealed casing, at least the terminal wires from the casing are made of copper material to reduce any thermoelectric force developed in the connections between the terminal wires and external circuits. Fig. 1 shows a germanium or silicon body 2 with electrodes 3 of gold, silver or aluminium and lead wires 4 connecting the electrodes to terminal wires which are made of copper, silver, gold, zinc or aluminium to reduce thermoelectric force when connected to external copper circuits. The casing 7 may be filled with silicone oil to reduce temperature gradient and the base 1 may consist of beryllium oxide. Fig. 4 shows an alternative arrangement in which the transistor casing is embedded in plastics material 13 and the terminal wires 5 are wound round a bar 14 of heat conducting material. The arrangement produces inductance compensation and the wires 5 may be in two portions, only the lower portion (52) being of copper material. In addition, further temperature equalization may be achieved by embeddng the plastics body 13 in a further body of heat conducting material such as Wood's metal. The intermediate lead wires may be composed of an iron-nickel alloy. Circuits for a D.C.-A.C. converter and for a scanner switch for sampling data storage utilizing such transistors are also described.
Patent GB-181223-A (GB)
Title: A protector for fruit trees or the like against birds, frost and cold winds
IPC: A01G13/02
Filed: 1921-05-18
Abstract: 181,223. Walker, C. E. F. May 18, 1921. Plant protectors.-An apparatus for protecting fruit trees from frost &c. comprises a stick A having hinged to its top end diametral arms B<3>, B<4> with stretchers D, D', a runner C and a supporting-pin H holding the arms in an horizontal plane and capable of supporting netting. A piece of fine-meshed netting may be placed on the top or on the windward side to prevent damage from frost &c.
Patent GB-712302-A (GB)
Title: An improved sound or acoustic amplifier
IPC: G04D1/06
Filed: 1952-06-03
Abstract: 712,302. Sound magnifying appliances. NORTON, F. D., and STUART, J. F. W. May 12, 1953 [June 3, 1952], No. 13933/52. Class 13. In an instrument for amplifying the ticking of a watch movement, the movement d is placed on a diaphragm c in a recess b in the casing a, the diaphragm c being connected by a rod h supported by a flexible plate g to a further diaphragm i in a recess closed by an apertured cover m which is placed against the user's ear. The movement is held in position by a spring blade o mounted on a lid n hinged to the casing.
Patent GB-814819-A (GB)
Title: Improvements relating to plastic sheets incorporating dye images
Inventor: RYAN WILLIAM HOWARD
IPC: G03C9/04
Filed: 1956-05-07
Abstract: Improved dye images on oriented sheets of a transparent, linear hydroxyl-containing vinyl polymer, e.g. polyvinyl alcohol, are obtained by pretreating the oriented sheet with an aqueous solution containing iodide ions and preferably, in addition, ions of a divalent metal such as beryllium, magnesium or cadmium.  The solution may contain divalent metal or other metal iodides or a mixture of an iodide and a divalent metal salt.  Pretreatment may be effected at room or elevated temperature.  The dye images are formed by printing with dichroic or isotropic dyes, examples of which are direct cotton dyes, to produce polarizing or non-polarizing images.  The dyed sheets are particularly useful in the manufacture of coloured stereoscopic film stock, the pretreatment being effected before each application of a colour.
Patent GB-221777-A (GB)
Title: Improvements in or relating to screw gear
IPC: F16H25/22
Filed: 1924-06-11
Abstract: 221,777. K÷llmann, A. G., and R÷del, F. G. B. Sept. 15, 1923, [Convention date]. Addition to 213,834. Screw-and-nut mechanism of the kind described in the parent Specification. The nut is in halves and the balls are retained in place by bands 13 which pass over the balls and between every two balls engage the flat surface of a wedge 5. The bands, preferably of steel, are secured in position. by rods 14 and screws 16.
Patent GB-475560-A (GB)
Title: Improvements in mine props or the like
Inventor: GERLACH KARL
IPC: E21D15/00
Filed: 1936-05-19
Abstract: 475,560. Mine-props. GERLACH, K. May 19, 1936, No. 14203. [Class 20 (ii)] A mine-prop comprises an inner tapered member sliding in an outer member with a pocket, a wedge or wedges between the members, and a locking member, the wedge and locking member being arranged in the pocket so that the locking member is not subjected to the whole of the lateral thrust set up by the axial load on the prop and for collapse is moved in a different direction from that in which the movable parts yield under load. As shown on the right-hand side of Fig. 1, the upper member 1 is provided with ribs 14 against which bear wedges 9 which move with the member 1 ; coacting with these wedges are loose wedges 4, 10, the wedge 4 having two inclined surfaces, one coacting with a wedge spacer 6 and the other with a wedge locking member 5 all disposed in a pocket 3 on the lower prop member 2; by this arrangement part of the thrust of the inner prop member under load is transmitted through the spacer-block 6 to the pocket and part to the locking member 5 which is adapted to be raised when the prop is to be released. Alternatively, a separate locking member 5<1> adapted to be withdrawn transversely for collapse, is used to support the wedge spacer-block 6. On the left of Fig. 1 are shown two alternative arrangements wherein the wedge 10 is supported either by a locking member 5<11> arranged between the upper end of the lower prop member and a lip on the wedge, or by a locking member 5<111> disposed between a projection 16 on the wedge and a projection on the side of the pocket 3. In other forms, the wedge is retained in position by a transverse locking key disposed between opposed lips on the wedge and pocket, or between a lip on the wedge and an auxiliary wedge spacer-block, and the key may be of wedge formation to coact with opposed wedge surfaces on either the locking wedges or on spacer-blocks. For resilience, as shown in Fig. 9, the transverse locking member 5 is spring-pressed against double inclined surfaces 6a on spacer-blocks 6, which have wedge contact with the mainwedge 4. The main-wedge 4 may be formed in two resiliently connected portions according to a further modification. The locking member may also be formed in two resiliently connected parts for use with any of the forms of prop described in the Specification.
Patent GB-512269-A (GB)
Title: Improvements in mudguards for wheels of perambulators, juvenile vehicles and the like
IPC: B62B9/16
Filed: 1938-05-13
Abstract: 512,269. Mudguards for perambulators &c. WASDELL, E.T. May 13, 1938, Nos. 14260, 14261 and 16332. [Class 136 (i)] In a mudguard for perambulators, juvenile vehicles &c. of the type comprising an arcuate blade and a pair of radial attachment stays, the inner ends of the stays are connected where they cross, and the terminations are formed into U-shaped vertical lugs adapted to straddle the axle and to be clamped thereto by a bolt, which extends through and between the lugs, and, when tightened by a nut, presses the lugs in opposite directions against the axle. In one form,' the inner ends of the stays 2 are connected together by a rivet 3, and are bent into vertical U- shaped lugs 4, having inturned ends 5 forming abutments to engage a bolt 8, which, when tightened by a nut 9, presses the lugs against the side of the axle 10. The rivet 3 engages a slot 7 in one of the stays to permit relative displacement of the stays to suit axles, of slightly varying dimensions. In a modification the U- shaped ends of the stays 2 are continued upwards and rigidly secured to the crossing point by the rivet 3.
Patent GB-143089-A (GB)
Abstract: 143,089. Zeitun, H. L., and Moore, M. R. July 7, 1919. Road-traffic signals on vehicles; transparency and stencil luminous signals.-Turning and stopping signal apparatus for vehicles comprises an indicator of the kind having a glazed cover bearing the signal indications any of which may be illuminated at will by a corresponding lamp, and a switchboard within reach of the driver and having tell-tale lamps each in parallel with the corresponding lamp of the indicator. The tell-tale lamps may have distinctive colours or may illuminate suitable indications. The indicator comprises a casing 2 with one or more glazed covers bearing the required indications, such as those shown, and divided into four compartments by radial partitions. Each compartment contains a lamp, which may have a reflector 23, for illuminating the corresponding indication. The lamps, which may be coloured, are controlled by switch arms 7, 8 co-operating with contacts 3 - - 6 to control the lamps of the indicator, and at the same time with contacts 3<a> - - 6<a> to control telltale lamps 9 - - 12 each in parallel with the corresponding indicator lamp. The switchboard also has a clip (not shown) by which it may be secured to the steering-wheel. A circuit diagram is given.
Patent GB-542256-A (GB)
Title: Improvements in and relating to heating installations having underfeed stokers
IPC: F23K3/14
Filed: 1940-09-21
Abstract: 542,256. Regulating air supply to furnaces. ENDEMANN, H. M., EVANS, S. D. O., and QUEENSMERE PROPERTIES & INVESTMENTS, Ltd. Sept. 21, 1940, No. 14443. [Class 51 (i)] In an underfeed stoker having a fuel conveyer and an air supplying fan the speeds of which can be varied while maintaining a constant speed ratio, automatically operated means are provided for reducing variations in the ratio of fuel supplied to air supplied which are consequent upon the changes which occur in the efficiency of the fan at different speeds. As shown in Fig. 2, the air conduit 5 delivering air from the fan to the furnace is provided with a damper 20 held in a horizontal position against a stop 23 by a counterweight 21. The damper is curved at the end facing the air current so that increase in the velocity of the air at higher speeds of the fan causes the damper to turn and reduce the air supply to the furnace. Instead of the damper being curved at one end, it may be arranged at a small angle to the horizontal. Fig. 3 shows a modification in which the damper 20 is turned into the horizontal position by a motor 26 which is energized at low speeds of the fan motor. Specification 542,098, [Group XXXV], is referred to.
Patent GB-457095-A (GB)
Title: Improvements in electric water heaters
IPC: F24H1/20
Filed: 1935-05-17
Abstract: 457,095. Heating water by electricity. MATTHEWS, R. B., Greater Felcourt, East Grinstead, Sussex. May 17, 1935, No. 14479. [Class 39 (iii)] Water in an heat-insulated storage chamber a is heated by an immersion heater g inserted and supported in the water supply pipe f depending from a dished cover e. Apertures n, q at the top and bottom of the pipe allow the water to circulate around the heating element or in contact with a jacket j provided to prevent furring of the element. A thermostat controlling the element may also be inserted in the tube. Water is withdrawn from the upper part of the chamber through a pipe p having a overflow branch.
Patent GB-689849-A (GB)
Title: Means for preventing or dissipating electrostatic charges in textile machinery
IPC: H05F3/06
Filed: 1950-06-12
Abstract: 689,849. Discharging static electricity. T.M.M. (RESEARCH), Ltd., and ROBINSON, F. C. May 29, 1951 [June 12, 1950], No. 14614/50. Class 35. Static electricity is discharged from textiles by means of a roller or other machine part in contact with the textile and coated with a lacquer or other paint-like substance containing a radio-active agent. Specification 1555/12, [Class 35], is referred to.
Patent GB-612022-A (GB)
Title: Ratchet spanner
IPC: B25B13/46
Filed: 1946-05-15
Abstract: 612,022. Wrenches. WARNER, A. May 15, 1946, No. 14644. [Class 61 (iii)] A ratchet wrench comprises a nut socket ring K in two halves hinged together at G and adapted when opened to be engaged in a lateral direction on a nut with adjoining piping, the two halves being held closed by a latch G<SP>1</SP>. The driving lever I has a fork H provided with pins A adapted to engage groove B in the side faces of the ring and terminates in a nose C which grips the rim and drives the ring in ratchet fashion when the lever is oscillated.
Patent GB-239928-A (GB)
Title: Improvements in electric radiators
IPC: F24C7/06
Filed: 1924-06-17
Abstract: 239,928. McQuinn, T. H. June 17, 1924. Electric radiators.-An electric radiator in which convection currents are utilized in addition to radiation, consists of one or more tubes a of refractory material with uncbstructed bores, on which the conductor b is wound, supported vertically in front of a concave reflector h. The air currents ascending through the tubes are directed forwardly by deflectors d, g. The lower end of the tubes may be bell-mouthed, and the tube and conductor may be surrounded by a second tube of refractory material to increase radiation.
Patent GB-515001-A (GB)
Title: Improvements in automatic variable-speed transmission control
IPC: F16H61/02
Filed: 1938-05-17
Abstract: 515,001. Fluid-pressure servomotors. LIVERMORE, W. T. May 17, 1938, No. 14661. [Class 135] [Also in Group XXIV] A vehicle-driven centrifugal governor 61, connected to one end of a floating-lever 36, and the engine accelerator-pedal 66, connected to the opposite end of the lever, jointly operate a selector-valve 16, connected to an intermediate point of the lever and controlling the supply of pressure-oil to cylinders 17 operating, the clutches of an individual clutch change-speed gear. Pressure-oil from an accumulator 7, fed by a pump 5, reaches the inlet 29 of the selector valve 16 through a check-valve 45 and a port 26 in a clutch-valve 25, controlled by a pedal 44, depression of which vents the pressureinlet 29 to a reservoir 6, through a valve-port 47, thus neutralising, or in effect declutching, the transmission by permitting the release of any speed-clutch which happens to be engaged. The pedal 44, which is used as a clutch-pedal, is linked to the accelerator-pedal 66, so as to be depressed whenever the latter is fully released, such full release being prevented when desired by a manual stop 76. A similar manual stop 75 acts on the other end of the floating lever 36 to lock the transmission in low ratios. Lost-. motion 37 at the selector-valve pivot provides that down-shifts take place at a lower vehiclespeed than corresponding up-shifts. The governor 61 has a dashpot 60. Engagement of the speed-clutches is cushioned by air 53 in their cylinders 17, the rate of engagement being individually controlled by throttling-screws 50.
Patent GB-1375876-A (GB)
IPC: B32B27/00
Filed: 1972-03-29
Abstract: 1375876 Synthetic resin laminates BADISCHE ANILIN- & SODA-FABRIK AG 29 March 1972 [5 April 1971] 14707/72 Headings B5N and B5A [Also in Division B2] A laminate comprises at least one layer A which contains more than 20% by weight of a polyphenylene oxide where n is 10<SP>3</SP> to 10<SP>1</SP> and at least one layer B which contains more than 40% by weight of polymerized units of styrene. Layer A may be a mixture of the polyphenylene oxide and impact resistant polystyrene. Layer B may be a homopolymer of styrene or a copolymer with acrylonitrile, acrylates, methacrylates, maleic anhydride or α-methylstyrene and may be modified to improve its impact resistance by blending a rubber, e.g. polybutadiene, into the polymer. The laminates may be prepared by coextrusion (the layers being united within, or shortly after passing through, the die), coating layer A with a solution of layer B, extruding or injection moulding a melt of layer B on to layer A, or by combining preformed sheets. Layer arrangements AB, ABA and BAB are disclosed. The extrusion may be effected from a sheet die with the layers pressed together by rollers, or from an annular die when the layers are pressed together by compressed air.
Patent GB-312791-A (GB)
Title: Improvements in or relating to weighing apparatus
IPC: G01G21/00
Filed: 1928-05-19
Abstract: 312,791. Avery, Ltd., W. & T., and Sykes, C. M. May 19, 1928. Compound-lever apparatus; levers; apparatus fitted to overhead tracks.- In a weighing-apparatus of the kind incorporated in an overhead runway or track the weighing rail or track is carried by a cradle-like structure disposed above the weighing levers and resting on bearings thereon. The weighing rail 4 is secured at each end to a C-shaped bracket 5. The brackets are connected by a tie rod 6 to constitute a cradle-like structure, and are supported by adjustable bearing blocks 7 resting on knife-edges 8a carried by the forked extremities 8<c>, 8<d>, of levers 8. The levers 8 are fulcrumed on knife-edge hearings 9<a> supported from the ceiling 10 by adjustable hangers 9. The inner ends of the levers 8 are connected by a transfer lever to an automatic indicating mechanism. Adjustable tie rods 4<a>, 4<b> pivotally connect the. fixed rail 4' with arms 5<a>, on the cradle.
Patent GB-293020-A (GB)
Title: Improvements in and relating to carburetting apparatus for internal combustion engines
IPC: F02M1/00
Filed: 1928-05-19
Abstract: 293,020. A. C. Spark Plug Co., (Assignees of Gregg, D.). June 30, 1927, [Convention date]. Lever-actuated pumps; diaphragm pumps.- In carburettors wherein air is supplied by a supercharger and fuel is fed to the float chamber by a pump, the supercharger pressure is transmitted to the float chamber and to both sides of the pump. A supercharger 11, Fig. 1, forces air through a pipe 16 to a carburettor 12 having a float chamber 13 and a throttle valve 20. The pipe 16 has a branch 17 controlled by a valve the spindle 18 of which is connected by linkage 19 to the throttle 20. Fuel enters a strainer 23 at 22, Fig. 2, passes through filtering material 24, valve 25 and duct 26 to the chamber 56 of a diaphragm pump the delivery from which occurs through a valve 57 and pipe 55, Fig. 1, to the float chamber 13. The diaphragm 28 is held between plates 29, 30 secured by a nut 31 to a rod 32 downwardly actuated by a cam 42 through linkage 41, 35, 34, but actuated during the pumping stroke by a spring 48 which causes the stroke to vary with the pressure in the chamber 56. A pipe 50, Fig. 1, has branches 53, 54 for transmitting the air pressure to the float chamber 13 and to the under side of the pump diaphragm, Fig. 2. The air pressure is already transmitted to the upper side of the diaphragm by the pipe 55, Fig. 1, and its transmission to the under side balances the diaphragm in respect of such pressure and permits it to be returned with the full force of its loading means.
Patent GB-1335255-A (GB)
Title: Fluid pressure responsive device
IPC: G01L7/08
Filed: 1971-05-13
Abstract: 1335255 Diaphragm actuators ALFA ROMEO SpA 13 May 1971 [19 June 1970] 14789/71 Heading F1D A diaphragm actuator for measuring the pressure in a chamber 21 and/or effecting an adjustment thereby, comprises a diaphragm 2 sealed at its periphery between two housing parts 1,7, the diaphragm being held flat against the part 1 during assembly so that, when the diaphragm and part 1 are separated, a vacuum is created therebetween. A link arm 11 attached to the centre of diaphragm 2 is acted on by a spring 13 to separate the diaphragm from housing part 1.