baber/WOPTO huggingface dataset:
Patent GB-1270937-A (GB)
Title: Turbine testing apparatus
Inventor: CHILMAN JOHN ALFRED
IPC: F01D21/00
Filed: 1968-08-28
Abstract: 1,270,937. Testing turbines with variable pitch blades. DOWTY ROTOL Ltd. Aug. 15, 1969 [Aug. 28, 1968; Nov. 12, 1968], Nos. 41010/68 and 53526/68. Heading F1T. In combination, a turbine, a governor adapted to govern the speed of the turbine by varying the pitch of the blades between their low-pitch and high-pitch positions, a rotary device connectible to rotate the hub of the turbine and thus also the blades, for testing the turbine, there being means to indicate the attainment of the governed speed when the turbine is driven by the device, and the power delivered by the device is increased beyond that which the turbine can absorb with the blades in the low-pitch position. The invention is described with reference to embodiments in which the turbine is a ram-air turbine mounted on an aircraft and movable into operative position to drive for example an emergency hydraulic pump. The ramair turbine in Fig. 1 comprises a hub 1 and variable pitch blades 2 which are controlled by a governor disposed within the hub. In emergency the turbine drives a hydraulic pump 4 through shaft 3. To test the operation of the turbine governor, pressure fluid is supplied to hydraulic motor 11 which drives the turbine through shaft 9 clutch 8, shaft 7 and gearing 6, 5. When the control is set at "start", the light 13 indicates. When the governed speed is attained, the lamp 13 goes out and lamp 14 indicates. Should the light 14 go out and the light 15 indicate, this indicates a fault. In Fig. 2 (not shown), the turbine 1, 2 is mounted on an arm which may be moved about trunnions to project the turbine from its stowed position to its operative position in the airstream. In Fig. 3 the turbine 31 drives an alternator through shaft and gearing. To test the turbine governor, the splined shaft 44 of a hydraulic motor 41 is engaged with the internally splined shaft 34 of the turbine, the motor 41 being mounted on a ground equipment trolley for example. Testing is carried out as in the first embodiment. The turbine 51, 52 in Fig. 5 normally drives a hydraulic pump 54, the changeover valve 57 being in the second position B as shown in which the pump inlet line 56 is connected to reservoir 64 and outlet line 55 is connected through line 58, pressure-sensing device 59, non- return valve 61 to the aircraft high-pressure connection 62. To test operation of the turbine, the switch 57 is moved to the first position A. Hydraulic fluid under pressure now passes from the aircraft system 62, through flow-rate indicating device 66 to line 56 so that the pump 54 is driven as a motor to drive the turbine 51. Fluid from the motor 54 discharges through line 55 to the reservoir 64. The test procedure is as in the first embodiment.
Patent GB-1495955-A (GB)
Title: Flame retardant polycarbonate composition
IPC: C08K5/098
Filed: 1974-12-16
Abstract: 1495955 Flame-retardant polycarbonate compositions GENERAL ELECTRIC CO 16 Dec 1974 [28 Dec 1973] 54249/74 Heading C3R A flame-retardant composition comprises a polycarbonate and an alkali metal or alkaline earth metal salt of a compound in which a carbonyl group is conjugated to an olefinic double bond with a hydroxy group attached to the carbon atom in the #-position and halogenated derivatives thereof. The composition may contain from 0À01 to 10% by weight of the salt. Many salts are specified, e.g. disodium squarate, disodium chloroanilate and disodium croconate.
Patent GB-1451815-A (GB)
Title: Control system for a gas turbine engine
IPC: F02C9/38
Filed: 1973-11-23
Abstract: 1451815 Gas turbine engine fuel systems PLESSEY CO Ltd 18 Nov 1974 [23 Nov 1973]  54491/73 Heading F1G The invention relates to a control system for a gas turbine engine which as shown comprises a fuel backing pump 4 which is driven by shaft 6 at a speed proportional to engine speed, fuel discharging from the pump to outlet 8 thorugh an external filter and a fuel-cooled oil cooler (not shown), back through inlet 10 to the gear pump 12, discharging through outlet 18 to a fuel regulating unit (not shown). The outlet of the gear-type fuel pump 12 is controlled by a spill valve 32A which is acted upon at its ends 58, 62 by pressures taken from the backing pump 4, the valve spool also being acted upon at its upper end by an adjustable spring 34. When the spill valve is open in the position shown, a fraction of the fuel passing to the outlet 18, passes through passage 48 and open valves 40, 42 and 44, 46 to the passage 50 so back to the inlet 54 of the fuel pump 12. The pressure applied to the upper end 58 of the valve spool 32 is taken from the eye of the backing pump impeller 2 through line 56. Two further tappings are taken from the backing pump 4, that from adjacent the eye of the impeller 2 having a restriction R 1 and that from adjacent the pump outlet through passage 22 having a filter 24 and a restriction R2. The restriction R2 is provided with a by-pass passage 23 controlled by a half-ball valve 26 mounted on the rotatable arm 28 of an electric actuator 30. The actuator 30 may receive a signal from a protective control unit 32 to which signals NH representing HP shaft speed, T representing turbine temperature and NL representing LP shaft speed, are applied, a signal passing to the actuator in the event of one of the parameters exceeding a pre-determined value, whereupon the valve 26 opens so opening the bypass passage 23. Thus the restrictors R1 and R2 are by-passed and pump discharge pressure is applied through line 60 to the lower face 62 of the spool valve 42 which thereupon opens so that fuel is spilled back to the pump inlet.
Patent GB-1236784-A (GB)
Title: Audio-visual recording and display methods and apparatus
IPC: G09B5/06
Filed: 1968-11-18
Abstract: 1,236,784. Recording and playback; associated working. BELL & HOWELL CO. 18 Nov., 1968 [20 Nov., 1967], No. 54562/68. Heading G5R. A sound recorder is started in response to actuation of a cine-camera providing an indication on the film denoting the start of a sound recording operation and is stopped in response to stopping of the camera, an indication being made on the recording medium denoting the stopping of a sound recording operation. As shown, closure of switch 33 to start camera 11 initiates, if a "sound" switch 32 has been closed, the charging of a capacitor 41 followed by the energization of a relay 40 which starts a tape recorder 12 and briefly lights a lamp 51 in the camera 11, during the charging (or discharging, Fig. 4) of a capacitor 50 (or 82), to expose a marginal portion of the film 15 (54, 78, 79, Fig. 2). Delayed switching may be achieved alternatively by electronic (Fig. 5) or mechanical (Fig. 7) means. The opening of switch 33 stops the camera 11 and releases relay 40, which stops the tape recorder 12 and causes the discharge of a capacitor 57 briefly to energize an oscillator 61, producing a recording- termination signal which is recorded by means of a head 30 on a control track 25 of the tape 18 (60, 85, 86, Fig. 2). During projection of the film (Fig. 3), photoelectric detection of a marginal indication (54, 78, 79) denoting the start of a sound-accompanied sequence initiates the playback of the tape 18, which is stopped when the head 30 encounters the recording-termination signal (60, 85, 86). The camera 11 may contain a pulse generator (110, 112, Fig. 5) producing synchronizing pulses which are recorded (135, Fig. 2) on the tape control track 25 by means of head 30, the sound recording operation and the associated marking of the film being initiated by the integration of a predetermined number of these pulses, as disclosed in Specification 1,236,790.
Patent GB-1137889-A (GB)
Title: Improvements relating to electro-mechanical transducers
IPC: G01L1/22
Filed: 1965-12-23
Abstract: 1,137,889. Stereophonic pick-ups. ENDEVCO CORP. 23 Dec., 1965 [29 Dec., 1964], No. 54672/65. Addition to 1,111,133. Heading H4J. [Also in Division H1]  An electro - mechanical transducer incorporates a piezo-resistive strain gauge element of the same general form as in the Parent Specification viz., a body 150 of semi-conductor material shaped to form two pads 158 joined by a thinner neck 159-but the neck portion of the element has, at its thinnest part 160, a dimension within the fibre range. The fibre range is defined with reference to Fig. 7, which depicts the dependence of yield stress on cross-section, the stress having different but substantially constant values for small and larger crosssections but a value which is an inverse function of cross-section in a transitionary range of cross-sections. This range is termed the fibre range and within it yield strength is largely independent of cross-section. The figure shows numerical values for the preferred material, silicon. The transducer in which this element is embodied in a phonograph pick-up head, Fig. 2, in which movements of the stylus 30 are transmitted by arm 36 to stress the sensitive elements in a cartridge 100 from which an electrical output is derived. The cartridge 100 contains two of the elements 150 of Fig. 4, disposed with their planes at 90 degrees to each other and 45 degrees to the vertical, each responding to undulations in a corresponding side of the record groove in a stereophonic recording. The strain gauge elements may each be mounted on a centrally weakened beam 126, Fig. 5 (not shown) which is stressed by bending, the sensitive portion of the strain gauge overlying the weakened portion of the beam. Local circuits.-Fig. 6 (not shown) depicts a circuit in which the sensitive element is a component in a voltage divider chain across a voltage supply and a transistor amplifies the voltage appearing across the element.
Patent GB-1493830-A (GB)
Title: Thermally actuated valve
IPC: F16K31/00
Filed: 1974-12-18
Abstract: 1493830 Valves TEXAS INSTRUMENTS Inc 18 Dec 1974 [26 Dec 1973] 54734/74 Heading F2V A thermosensitive valve for use in a coffeemaking machine has a bi-metallic disc closure member 13 which seats on an 0-ring 11. A spring arm 15 stamped out of a retaining disc 13 biases the disc 13 towards the seat. An orifice 43 around the stamped-out part provides for fluid flow through the disc 13 which has a number of peripheral tabs 49 enabling it to be press-fitted within the valve body. The closure disc 13 snaps over from the closed to the open condition, reacting in doing so against an abutment 17 in the housing.
Patent GB-1148118-A (GB)
Title: Condenser microphone
IPC: H04R19/00
Filed: 1966-12-07
Abstract: 1,148,118. Condenser microphones. TESLA NARODNI PODNIK. 7 Dec., 1966 [10 Dec., 1965], No. 54803/66. Heading H4J. A unidirectional condenser microphone has its diaphragm 1 secured to the front of a casing 2 and is provided with a fixed electrode 3 located behind the diaphragm 1 and having one or more bores 5 mating with one or more bores 8 in an insulating plate 9. The casing 2 has one or more radial bores 4 each connected to a radial groove 6 in the insulating plate 9. The radial grooves 6 lead to an annular space 7 to which are connected the bores 8. The annular space 7 is provided in a rear wall 10. The electrode 3 is preferably of electret material, e.g. ceramic.
Patent GB-1328546-A (GB)
Title: Apparatus for modulating and amplivying high frequency carrier waves
IPC: H04N5/38
Filed: 1970-11-19
Abstract: 1328546 Modulators TOKYO SHIBAURA ELECTRIC CO Ltd 19 Nov 1970 [19 Nov 1969] 55016/70 Heading H3R [Also in Division H1] In apparatus for amplifying and modulating high frequency carrier waves, the modulated carrier waves are employed to velocity modulate the electron beam of a linear beam discharge tube, and the modulating signal is applied to a grid electrode to density modulate the electron beam, part of the output of the tube being fed back through a detector and amplifier to control a gate in the lead to the grid. As shown, the video signal from the generator 30 of a television broadcasting apparatus is applied to a distributer 51 which passes the whole signal to modulator 31, the output of which is applied to the input cavity 21 of the klystron 11, while the amplifier, 29 and gate 52 receive only that portion s 1  of the signal which exceeds the black level, Fig. 4, the gate being opened by the signal s 1 . In another embodiment (Fig. 1, not shown) the distributer 51 and gate 52 are dispensed with, the whole of the video signal being applied to the grid 18. A travelling-wave tube, instead of a klystron, may be employed (Fig. 9, not shown).
Patent GB-1125484-A (GB)
Title: Pneumatic conveying system
IPC: B65G51/18
Filed: 1966-01-03
Abstract: 1,125,484. Pneumatic conveyers. AMERICAN MACHINE & FOUNDRY CO. 3 Jan., 1966 [21 Jan., 1965], No. 55734/67. Divided out of 1,125,483. Heading B8A. The subject-matter of this Specification is included in parent Specification.
Patent GB-1314737-A (GB)
Title: Method and apparatus for removing liquid hydrocarbon co mpounds from water or snow
IPC: E02B15/10
Filed: 1970-11-24
Abstract: 1314737 Removing floating oil from water OIL MOP INTERNATIONAL Inc 24 Nov 1970 [6 July 1970] 55807/70 Heading B1D [Also in Division B7] Floating oil is removed from open water by driving an endless mop 15, comprising a rope carrying bundles of polypropylene strands, round pulleys 16, 17, the pick up run 15A of the mop trailing in the water and passing between driven rolls 19, 20 which squeeze the picked up oil from the mop into barge 18A. The barge 18A may be powered or towed, and buoy 18 may be towed or anchored. The mop comprises a stranded polypropylene rope, between whose strands are secured the central parts of bundles cut from polypropylene tow. Groups of strands in each bundle are fused together at their free ends (11). The bundles may be 2 to 5 feet long and comprise 100 strands of circular, square or rectangular section, ranging from 0.001 inches dia to 0.25 inches wide. The method is also applicable to removing oil from snow. The mop and its manufacture are described and claimed in Specification 1314738.
Patent GB-1246994-A (GB)
Title: Automatic locking safety seat belt retracting device having an inertia responsive cam and follower
Inventor: STOFFEL ROBERT WINSLOW
IPC: B60R22/38
Filed: 1968-12-03
Abstract: 1,246,994. Vehicle safety belts. JIM ROBBINS SEAT BELT CO. 3 Dec., 1968, No. 57430/68. Heading A3V. An automatic locking seat belt retractor 10 comprises a shaft 34, Fig. 2, slotted at 42 to receive an end of the seat belt 12 and supported by two brackets 24, 26, the shaft having a wind up spring 48 at one end and an inertia locking mechanism 22 at the other end. This other end has a profile onto which a cam 52, Fig. 3, is fitted, spaced by a washer 56 from bracket 26. A follower 70 is placed around cam 52 and held in position by end plate 80 and bolt 82. A spring 84 has projections 86 and 90 which mate with holes 88 and 92 in follower 70 and cam 52 respectively, whereby the follower is biased so that edge 76 of its internal profile abuts edge 68 of the profile of cam 52. Cam 52 has an arcuate edge profile 58 whose axis 60 is displaced from the axis 62 of shaft 34, and thus if follower 70 rotates relative to cam 52 the follower is displaced from the axis 62. The strength of the biasing spring 84 and the inertia of follower 70 are chosen such that sudden accelerations in rotation of shaft 34, as caused by the belt 12 unwinding in a collision, causes relative motion of cam 52 and follower 70, and a projection 94 on the displaced follower engages a ratchet plate 96 mounted on bracket 26 to lock shaft 34 since further relative motion is prevented by the engagement of profile edges 66 and 78 on cam 52 and follower 70 respectively. The locking mechanism 22 has a cover 100, and the whole retractor 10 has a cover (not shown).
Patent GB-1165146-A (GB)
Title: Improvements in or relating to Rake Wheels
IPC: A01D78/10
Filed: 1966-09-06
Abstract: 1,165,146. Haymaking machines. C. VAN DER LELY N.V. 6 Sept., 1966 [22 Sept., 1965], No. 57690/68. Divided out of 1,165,145. Heading A1F. A rake wheel adapted to rotate about a vertical axis or about axes that are inclined to the vertical by not more than 70 degrees, comprises tines that are capable of resilient deflection about a pivotal axis. The rake wheel comprises spokes 34 inclining upwards from the hub 11 with the far ends 35 bent forward in the direction of travel attached to which are multiple coils 36, 37 which merge into tine supports (39), 40 and tines 41, 42.
Patent GB-1163939-A (GB)
Title: Process for the Production of a Nitro-Nitroso Dimer
Filed: 1966-12-23
Abstract: 1,163,939. Nitro-nitroso dimers. GULF RESEARCH & DEVELOPMENT CO. 23 Dec., 1966 [30 Dec., 1965], No. 57809/66. Heading C2C. Nitro-nitroso dimers are obtained by reacting a charge stock comprising an olefinic hydrocarbon consisting of a monoolefin or a non- conjugated diolefin with a nitrosating agent comprising a mixture of NO and NO 2  wherein the molar ratio of NO to NO 2  is at least 1 : 1 under conditions of temperature and pressure such that the NO 2  is substantially entirely in the vapour phase and wherein the stoichiometric ratio of the nitrosating agent to the olefinic hydrocarbon is less than 0.5. The nitrosating agent may be N 2 O 3  or NO catalysed with NO 2  and the reaction may be effected at a temperature between 0 C. and the melting point of the dimer, optionally in the presence of a diluent such as a paraffin or an aromatic hydrocarbon. The reaction is preferably effected under conditions such that the dimer at least partially precipitates during reaction. In specific examples the olefinic starting materials employed are octene-1, hexene-1, dodecene-1, hexadecene-1, octene-2, 1,5-hexadiene, 1,4- pentadiene and cyclohexene. Other similar starting materials are also described.
Patent GB-1203892-A (GB)
Title: Device for training in firing and guiding guided missiles
IPC: F41G3/26
Filed: 1968-12-09
Abstract: 1,203,892. Teaching warfare. GIRAVIONS DURAND. 9 Dec., 1968 [16 Feb., 1968], No. 58378/68. Heading F3C. A device for training in guiding missiles from a mobile platform comprises an aiming device integral with the mobile platform and including an optical device assembled as an episcope with a gyroscopically stabilized mirror 10 for producing a stabilized image of a real landscape. The device is further provided with an eyepiece 7, a plane semi-reflecting mirror 8 adapted to receive the image of the landscape and project it into the eyepiece 7 and an optical device for generating a light spot. The light spot is subordinate to a guiding mechanism which directs the guided spot towards the eyepiece 7 through the semi-reflecting mirror 8. In the construction shown the optical device for generating the spot comprises a light bulb having a filament 1, a small glass sphere 3 mounted in a conical bore of a fixed oblique mirror 5 and producing the spot of light, a plane mirror 4 which is movable about two axes by the guiding mechanism for the spot of light. The guiding mechanism includes two servo-mechanisms 13 controlled by signals issued by a computer. The device further comprises a lens 6 focused on the light spot, a second lens 14 focused on a plane reticular lens 15 and an image re-erecting device 16. In a modification (Fig. 2, not shown) the lens 14 and a further lens 9 (Fig. 1) are replaced by a single lens between the mirror 8 and the reerecting device 16. In a further embodiment the light spot produced by the glass sphere is projected directly into the movable plane mirror and the re-erecting device is constituted by an objective lens and two further lenses arranged between the stabilized mirror and the semireflecting mirror (Fig. 3, not shown).
Patent GB-1272942-A (GB)
Title: Means for supporting pot plants
Inventor: PAYNE WILLIAM
IPC: A47G7/04
Filed: 1968-12-10
Abstract: 1,272,942. Plant support. W. PAYNE. 25 Nov., 1969 [10 Dec., 1968], No. 58494/68. Heading A1E. [Also in Division E2] A clip for use with a plant support is shaped substantially as shown and may be made of wire, or sheet metal, (see Fig. 4). The plant support comprises two stakes 4, joined at the top by a ring or elastic band 16, and each attached to the pot by one of said clips.
Patent GB-1216196-A (GB)
Title: Ship's rudder
Inventor: BROEHL WALTER
IPC: B63H25/38
Filed: 1967-12-27
Abstract: 1,216,196. Ships' rudders. W. BROHL. 27 Dec., 1967 [29 Dec., 1966; 1 June, 1967], No. 58593/67. Heading B7V. A ship's rudder installation comprises a main rudder 4, a forward fin 3 and a rear fin 5, each pivotally mounted (via hinge 6) on the main rudder, and means (e.g. 7, 8, 9, 11, 12) interconnecting the fins and the main rudder such that on turning of the main rudder the fins turn to the same side of the main rudder and pivot in the forward direction. In the embodiment of Fig. 2 which is for a ship with twin rudders, the said interconnecting means for each rudder comprises members 7, 8, 16, 17 connected to rings 14, 15 around an eccentric disc 13. Each rudder may be mounted as in Fig. 3. The main rudder and fins may have transverse plates thereabove and/or below, e.g. the rudder and fins may have top plates 18 and 20, 21 respectively and the rudder a bottom plate 19 which extends over the fins.
Patent GB-1449887-A (GB)
Title: Procucing copies by electrostatic means
IPC: G03G15/22
Filed: 1973-12-18
Abstract: 1449887 Electrographic copying machine AUSTRALIA COMMONWEALTH OF 18 Dec 1973 [18 Dec 1972] 58679/73 Heading G2H An original document and a photo-conductive copy sheet are fed together in contact around a transparent or translucent drum 25 where they are exposed to light from a lamp 26 through an adjustable width slit 27 and then separated by air jets 6, 7 in a planar Venturi device 3, the original being forwarded by pairs of rollers 9, 34 to a tray 10 while the copy sheet is forwarded by roller pair 12 between guides 19, 20 through liquid developer in a tank 14 from which it is subsequently discharged by a roller pair 16 to a tray 15. A bias voltage may be applied across the guides 19, 20. The one of the rollers 16, that contacts the developed image bearing face of the copy sheet, is contacted by a cleaning pad 17. In another embodiment, Fig. 2 (not shown), the developed copy sheet is dried by contact with a heated drum before discharge from the machine.
Patent GB-1418303-A (GB)
Title: Glass compositions
IPC: C03C4/08
Filed: 1972-12-20
Abstract: 1418303 Glass composition for use in colour television tubes NIPPON ELECTRIC GLASS CO Ltd 20 Dec 1972 [20 Dec 1971] 58763/72 Heading C1M A glass composition consists essentially of, by weight, 58-66% SiO 2 , 1-4% Al 2 O 3 , 6-15% K 2 O, 2-8% Na 2 O, 0À5-4% CaO, 10-18% BaO, 0À1-4% WO 3 , 0À5-3% PbO, 0À1-0À6% CeO 2 , 0-2% MgO, 0-4À5% SrO, the sum of the PbO, BaO, WO 3  and SrO being more than 15% of the total composition. The glass composition finds use in the glass panels of colour television tubes because of their X-ray absorbing properties.