baber/WOPTO huggingface dataset:
Patent GB-957118-A (GB)
Title: Improvements in or relating to apparatus for vacuum control
Inventor: GWILLIM DAVID THOMAS
IPC: F16K24/06
Filed: 1961-12-27
Abstract: 957,118. Valves. DECCA Ltd. Nov. 23, 1962 [Dec. 27, 1961], No. 46330/61. Heading F2V. A valve body 10 has a vacuum inlet which leads to an outlet 23 via a valve seat 15 and a chamber 14; the latter is defined by a diaphragm 12 on which is mounted a closure member 16 that is urged to the open position by an adjustable spring 25. A bleed orifice 30 is provided between the chamber 14 and atmosphere so that in use the member 16 will never completely seat. The member 16 is drawn towards its seat 15 when the vacuum in chamber 14 is sufficient to overcome the spring 25. The outlet may lead through one or more apertures in the diaphragm.
Patent GB-1462238-A (GB)
Title: Display device
IPC: G09G3/18
Filed: 1974-10-28
Abstract: 1462238 Matrix display panel SUWA SEIKOSHA KK 28 Oct 1974 [29 Oct 1973] 46506/74 Heading G5C In a display device e.g. a matrix, electro-optical display material such as liquid crystal or transmissive ceramic (e.g. PLZT) lies in contact with electrodes between opposing substrates; a driving circuit lying on one electrode includes a shift register and a light detector each of which can produce a display. Using liquid crystal material 5 between glass substrates 2, 8, crossed polarizers 1, 9 and specular reflector 10, the unactivated crystals rotate the plane of polarization through 90 degrees in each pass, giving a bright background viewed from 1 against which the individual electrodes 7 to which voltage is applied appear dark. Against each electrode 7 is an integrated MOS circuit 13 substantially transparent (Fig. 4, not shown) and supplied with positive VDD and negative VSS lines, clock pulses 48<SP>1</SP>, input pulses 49<SP>1</SP> from neighbouring circuits and a common display timing pulse lines 51<SP>1</SP>: included in each integrated circuit is a phototransistor 40. Data for display, carried by display pulses coinciding with selected clock pulses, enters the first and subsequent circuits, delayed in each by the FET shift register 29-36; at any time on receipt of a display timing pulse the current states of all registers are stored in their associated memory units 42-47 via gates 37-39 and in each one that is "active" electrode 7 is energized to display. The memories retain the display pattern unchanged while the data pulse series is being amended, until replaced on receipt of a further display timing pulse. At any time display of an electrode can be enforced by shining a light on it while a display timing pulse is present. In an alternative arrangement with non- transparent but smaller CMOS circuits (Figs. 7, 8, not shown), phototransistor doped respectively with CdS and CdSe for short and long wave sensitivity are arranged to activate and inactivate respectively the display stored in the memory (Fig. 9, not shown); the shift register itself may also be changed. With the addition of one gate (Fig. 11, not shown) the circuitry may be adapted for A.C. supply. Either panel may be coupled to an external shift register and memory (Fig. 12, not shown) for parallel display, deleted and replaced by not necessarily the same display timing pulses.
Patent GB-1271403-A (GB)
Title: Skid control system
IPC: B60T8/1763
Filed: 1969-03-27
Abstract: 1,271,403. Antiskid braking systems. KELSEY-HAYES CO. 27 March, 1969 [20 Sept., 1968], No. 47079/71. Divided out of 1,271,401. Heading F2F. An antiskid brake system having a modulating valve 24 for releasing or applying fluid braking pressure in response to the presence or absence of an imminent skid condition includes wheel velocity measuring means which also prevents actuation of the valve to release pressure unless the velocity of at least one wheel is below a predetermined value which is the average of the velocities of at least two of the wheels. When the valve 24 is in the brake release condition the wheel velocity measuring means is disabled.
Patent GB-1243870-A (GB)
Title: Improvements in or relating to props
IPC: E21D15/51
Filed: 1969-09-25
Abstract: 1,243,870. Hydraulic pit props; releasable fastenings. GEWERKSCHAFT EISENHUTTE WESTFALIA.; 25 Sept., 1969 [31 May, 1969], No. 47181/69. Headings E1P and E2B. In a telescopic pit prop. 2, 4 having an extension 1 provided with a plurality of peripheral grooves 3, 3', the extension 1 is locked in position by two complementary clips 6, 7 pivotable about a pin 5 and having inwardly extending projections 8 to selectively engage one of the grooves in the extension 1. Each clip has a handle and the free ends thereof are interconnected by a pivotable bolt 14, see also Fig. 2 (not shown).
Patent GB-1207357-A (GB)
Title: Improvements in or relating to recording devices
IPC: H04N1/40
Filed: 1967-10-18
Abstract: 1,207,357. Selective printing. ROBBERT BOSCH G.m.b.H. 18 Oct., 1967 [12 Nov., 1966], No. 47352/67. Heading B6F. [Also in Divisions G1 and H4] A recording device for recording information on a recording carrier 10 having a metal coating, comprises an electrically conductive contact point 20 adapted to be brought into contact with the metal coating so that the recording current burns the metal coating at the point of contact and a semi-conductor element 24 having a thyratron-like characteristic being provided for controlling the recording current. The metal coating is formed on a base of cellulose and the recording carrier 10 is drawn over a roller 13 of insulating material by a device (not shown). A roller 15 of electrically conductive material such as carbon maintains contact between a voltage source 16 and the metal coating. A pointer 18 moved mechanically by a device (not shown) such as a measuring instrument is journalled in a bearing 19 and is connected to the voltage source through a thyristor 24 and a resistor 23. A pulse generator 26, which may be a facsimile transmitting device is connected to an amplifier 25, the output of which is connected to the cathode and control electrode of the thyristor. A recording current flows when a pulse is applied to the thyristor from the generator, the pulse switching on the thyristor. The recording current is interrupted when the metal coating has burnt at the point of contact and therefore becomes non-conducting. Modifications are described in which the semi-conductor element comprises a four-layer diode or a photo-thyristor, the latter receiving light pulses produced by a light source and stroboscope disc arrangement.
Patent GB-1415685-A (GB)
Title: Dredgers and to dredging
IPC: E02F3/88
Filed: 1972-10-14
Abstract: 1415685 Dredgers supported on air cushions J T MACKLEY & CO Ltd 15 Oet 1973 [14 Oct 1972] 47514/72 Heading B7K [Also in Division E1] A dredger 1, comprising a cutter/suction head 14 carried by a pivotal hollow arm 16 connected to a suction pump 17 which discharges dredged material ashore through a flexible hose 18, is supported in use by an air cushion 3 enclosed by a flexible shirt 5 and supplied with cushion air by a pair of fans 2 which are driven by engine units 9 and discharge compressed air directly into cushion space 3. The platform carries a further hose 19 for the supply of lubricating water to head 14 and a pair of retractable anchoring spuds 12 and the skirt may be of the looped/segmented form disclosed in Specification 1,141,601. In an alternative embodiment the platform has a cut-out to enable the arm 16 to be lowered and the arm carries a portion of flexible skirt which seals against the side walls of the cut-out. The dredger may be winched into a working position or it may be propelled by propeller or jetreaction means or by apparatus engaging a water-bed surface. It may be manoeuvred by releasing jets of air from the cushion for which water instead of air may be used, the fans 2 being replaced by water pumps.
Patent GB-1446883-A (GB)
Title: Movable bearing for a carrying trunnion of a converter
IPC: F16C13/00
Filed: 1973-10-11
Abstract: 1446883 Bearings; seals VEREINIGTE OSTERREICHISCHE EISENUNDS TAHLWERKE-ALPINE MONTAN AG 11 Oct 1973 [30 Jan 1973] 47571/73 Headings F2A and F2B A trunnion bearing assembly for a steel convertor comprises a housing 14 including annular radially inwardly projecting portions 17, 18 at each end thereof; a slide bushing 12 mounted in the housing 14; a rotational bearing 9, 9a mounted within the bushing 12 for axial displacement relative thereto; at least one spacer ring 10, 10<SP>1</SP>, 11, 11<SP>1</SP>, located adjacent each end face of the bearing 9, 9a and securable to a trunnion supported thereon, each ring 10, 10<SP>1</SP>, 11, 11<SP>1</SP> having a circumferential recess 19, 20 formed therein; a sleeve 21, 22, displaced in each recess 19, 20, having freedom to move axially and radially, and being located radially by the projecting portions 17, 18 of the housing 14; at least one sealing member 28 disposed between each projecting portion 17, 18 and its corresponding sleeve 21, 22; and a viscous sealing agent disposed within the clearances between the sleeves 21, 22 and the rings 10, 10<SP>1</SP>, 11, 11<SP>1</SP>, The viscous sealing agent may be lubricating grease and may be applied through conduits 25 and 26. The sleeves 21, 22, may have annular seals, either resilient and C-shaped in cross-setion as Fig. 2, or of steel, and loaded by at least three springs 34, 35, Fig. 5 (not shown). Fig. 6 (not shown) illustrates another embodiment where sealing between sleeves 36 and the spacer rings 37, 37<SP>1</SP> is provided by labyrinth seals 46, 42 and 44 adapted particularly for movement about the centre point M of the bearing 9, 9a, Fig. 2. The bearing may comprise caged slide plates of plastics material sliding between spherical bearing surfaces.
Patent GB-1498476-A (GB)
Title: Circuits for selecting the display mode and the correction mode of electronic timepieces
IPC: G04G5/00
Filed: 1975-11-20
Abstract: 1498476 Electronic timepieces TOKYO SHIBAURA ELECTRIC CO Ltd 20 Nov 1975 [21 Nov 1974] 47757/75 Heading G3T An electronic timepiece has switches 1, 2, Fig. 1 which are selectively operated to control a ring counter circuit 30 whereby to set the logic levels at mode set terminals F, E, Dl, D2, which levels determine the particular time units displayed and set a correction circuit (not shown) for correction of a particular time unit or date indication. A truth table in respect of the set states of the terminals is given in the Specification. For instance, there are seven set states. With switch 2 open then each time switch 1 is closed set states 1 to 3 are shifted to succeeding states, whereby hours and minutes, then date and then seconds are displayed. With switch 2 closed, then each time switch 1 is closed, the set states 4 to 7 are shifted to the succeeding states. Thus in state 4 the terminal D 1 only is at high level so that hours and minutes are displayed and the time correction circuit is set to the hours correction mode. Likewise with a high level at one of D2, E, or F minutes, date and seconds respectively are selected for correction. Each time switch 1 is closed, shift registers 11, 12 clocked by 32Hz pulses, produce outputs which via invertors enable an AND gate 13 to produce a 1/64 sec pulse to clock shift registers 32, 33, 34 of the ring-counter 30. Similarly, outputs of shift registers 21, 22 enable an AND gate 23 to produce 1/64 sec reset pulses for the ring counter when switch 2 is opened; at the same time SR2 output disenables an AND gate 31 and since registers 33, 34 will be in the reset state an AND gate 36 will be disenabled. Consequently an AND gate 37 is enabled by signals via inverters from 33, 34, 36, and together with the output of SR22 enables an AND gate 38 so that D2 is maintained at high level. D1 is also maintained at high level by the output of OR gate 35, E, F will be at low level and therefore hours and minutes will be displayed. If switch 1 is now closed, the output of SR33 will go high at the clockpulse from AND gate 13 and will disenable AND gate 37. Consequently terminal E is maintained at high level while D1, D2 and F are maintained low, so that date only is displayed and correction is inhibited. Other states of D1, D2, F and E are similarly determined. Alternatively a respective NOR gate may be substituted for each of AND gates 13, 37.
Patent GB-1069227-A (GB)
Title: Improvements relating to methods of strengthening glass objects
IPC: C03C10/00
Filed: 1965-11-12
Abstract: A glass object having a vitreous-crystalline surface layer under compressive stress is made by heating a glass object at 650-750 DEG C. and then at 800-950 DEG  C.  The glass has composition, in weight per cent:  SiO2, 50-70; Al2O3, 20-38; Li2O, 5-10; MgO, 0-5; Na2O, 0-0.3; P2O5, 0.2-3; ZrO2, 0.5-2.5.  The surface layer may be 70-120m thick, and is substantially transparent.
Patent GB-1400847-A (GB)
Title: Colouring of polymeric materials
IPC: B01J23/89
Filed: 1972-10-19
Abstract: 1400847 Colouring polymers BADISCHE ANILIN- & SODA-FABRIK AG 19 Oct 1972 [20 Oct 1971] 48182/72 Heading C3P [Also in Division C4] A polyvinylchloride resin, a polyolefin resin or a polystyrene resin is coloured by incorporation therein of a barium lake of an azo dye having the formula wherein X is H, Cl or CH 3 , Y is H, Cl or CH 3  and n is 1 or 2.
Patent GB-1142706-A (GB)
Title: Steering mechanisms
Inventor: BRIGGS WALTER HENRY
IPC: B62D5/087
Filed: 1966-10-28
Abstract: 1,142,706. Motor vehicle steering gear. BURMAN & SONS Ltd. 30 Oct., 1967 [28 Oct., 1966], No. 48435/66. Heading B7H. In a rack-and-pinion steering gear for a motor vehicle, an annular control valve 43 disposed coaxially with the pinion 41 is arranged such that when the gear is actuated by the driver the valve permits free flow of fluid through an hydraulic damper connected to the rack 54 whereas when road shocks tend to cause reverse actuation of the gear the valve permits only a restricted flow through the damper. The pinion 41 has inclined teeth and is permitted slight axial movement on its shaft 42. The valve 43 is rotatably mounted on the shaft by balls 44 and moves axially therewith against a centring force provided by a spring-loaded plunger 50. Lands 48, 49 on the valve 43 co-operate with ports 46, 47 communicating with the damper. When the valve is displaced due to driveractuation of the gear the direction of fluid displacement from the damper is such as to lift a valve plate 51 and permit free flow between the ports 46, 47 through passages 52, 53 and around the lands 48, 49. When the valve is displaced due to reverse actuation of the gear the plate 51 remains seated to close the passages 52, 53 and fluid can flow between the ports 46, 47 only through drillings 48a, 49a and between the balls 44.
Patent GB-1362675-A (GB)
Title: Closure for pipe fittings
IPC: F16L45/00
Filed: 1972-10-10
Abstract: 1362675 Closures for pipe openings; pipe T-pieces E PASS & CO Ltd 10 Oct 1972 [19 Oct 1971] 48471/71 Headings F2P and F2G A tubular pipe fitting, such as a T-piece 10, has a flanged side entry 12 which sealingly accepts a plug 26 secured by means 34 extending through the side entry wall, and a cover plate 38 closing the external open end of the side entry. As shown, the securing means comprise screw studs 34 with tapered ends which urge the plug 26 into the side entry bore and against a shoulder 24 therein. A seal ring 32 is located in a groove 30 around the plug. The cover plate 38 is secured by bolts 36 engaged in bores around the side entry flange 14.
Patent GB-1121309-A (GB)
Title: Crimped tow
Inventor: GODDARD ARTHUR MICHAEL
IPC: A24D3/02
Filed: 1964-11-30
Abstract: Cigarette filter tips comprise crimped tow produced by forming a band of filaments, applying to the band a lubricant which comprises an aqueous emulsion of at least one fatty acid ester of a polyalkylene glycol and applying a crimp to the filaments either before or after the application of the lubricant.  The tow may consist of continuous cellulose acetate filaments of denier not substantially greater than 16 denier/filament, the total denier of the tow being not substantially greater than 150,000. The aqueous emulsion may contain 1-12% by weight of the ester which may be the monoester of polyethylene glycol with a higher fatty acid, e.g. stearic or oleic acids, or a mixture thereof. The emulsion may be applied to the filaments by immersing them in a trough containing the emulsion and the crimp may be applied by passing them through a stuffing box crimper.  Not less than 7 crimps/inch are preferably applied.ALSO:Crimped tow is produced by forming a band of filaments, applying to the band a lubricant which comprises an aqueous emulsion of at least one fatty acid ester of a polyalkylene glycol and applying a crimp to the filaments either before or after the application of the lubricant.  The tow may be of the kind used in the production of a cigarette filter tips and may consist of continuous cellulose acetate filaments of denier not substantially greater than 16 denier/filament, the total denier of the tow being not substantially greater than 150,000.  The aqueous emulsion may contain 1-12% by weight of the ester which may be the monoester of polyethylene glycol with a higher fatty acid e.g. stearic or oleic acids, or a mixture thereof.  The emulsion may be applied to the filaments by immersing them in a trough containing the emulsion and the crimp may be applied by passing them through a stuffing box crimper.  Not less than 7 crimps/inch are preferably applied.
Patent GB-1196977-A (GB)
Title: Electrical Connectors and Terminals Therefor
Inventor: KREHBIEL JOHN HAMMOND
IPC: H01R13/432
Filed: 1967-10-25
Abstract: 1,196,977. Two-part couplings. MOLEX PRODUCTS CO. 25 Oct., 1967, No. 48564/67. Heading H2E. Plug and socket contacts, which are mounted in respective inter-engaging insulating housings (82, 88, Fig. 11, not shown) are each formed from resilient metal with an open longitudinal seam 30 whose rear corners 52 are bent outwardly for engaging shoulders (95, 95a, Fig. 9, not shown) in the housings, resilient tongues 40 on the contacts engaging further housing shoulders (94, 98). Insertion of the plugs in the sockets causes contraction of the plugs and expansion of the sockets, the metal of the plugs having a greater thermal expansion coefficient than that of the sockets to maintain good contact on increase of temperature. Wings 50 and outwardly-directed ribs and flanges 60, 56 engage the walls of bores in the housings to stabilize the contacts. Each contact includes sections 66, 72 for gripping the conductor and insulation of a lead wire, the sections 66 having slots 74 with sharp edges which bite into the material of the conductor to which the section 66 is crimped.
Patent GB-929982-A (GB)
Title: Sealing strip for sealing between structural parts
IPC: E04B2/92
Filed: 1959-11-03
Abstract: 929982 Draught &c. excluders E G ECKARDT 3 Nov 1959 [4 Nov 1958 48738/62 Divided out of 929981 Class 20 (3) A sealing strip S for use for sealing the joints between adjacent structural elements 16, Fig.2, comprises a band 10, Fig.1, having along one longitudinal edge a hollow bead 11 of thickness greater than the transverse thickness of the band 10, this latter having projections 15 symmetrically arranged on opposite sides and divergent towards the bead.
Patent GB-1186468-A (GB)
Title: Method of Producing Gasketed Mounting Cups for Aerosol Dispensing Containers
Inventor: SIMONS CHARLES WILLIAM
IPC: C08K5/17
Filed: 1968-10-18
Abstract: 1,186,468. Dispensing liquids under gaseous pressure. W.R. GRACE & CO. Oct.18, 1968, No.49587/68. Heading F1R. A gasket 19 is mounted on an aerosol dispensing container valve mounting up 10 by placing a band of heat-shrinkable material around the skirt 12, with its lower edge overlying the juncture between the skirt and channel 14, and heat-shrinking the band into functional engagement with the skirt. Examples of gasket materials described include stretch-oriented, irradiated polyvinylidene fluoride, polythene, P.V.C. and a natural rubber-paraffin wax composition. Shrinking may be effected by placing the cup in an oven at 240 F. for 1 to 3 minutes according to the material. Gasket dimensions are given.
Patent GB-1126193-A (GB)
Title: Improvements relating to presses
IPC: B29C48/76
Filed: 1965-11-24
Abstract: 1,126,193. Screw mixers. BARMAG BARMER MASCHINENFABRIK A.G. 24 Nov., 1965 [26 Nov., 1964], No. 49965/65. Heading B1C. A screw press for molten plasticized thermoplastics (especially for fibres and films) has an inflow 1, a replaceable slotted or apertured graining plate 3 (see also Figs. 3 and 4, not shown), and an inflow degassing chamber 4 the lower end of which is defined by the screw chamber 6; a vacuum line 12 connects to the chamber 4. The molten raw material enters vertically into the chamber 4 without the aid of a feed mechanism. A replaceable hemispherical or conical baffle 15 may be provided. to increase the surface area of the plastic. There may be heaters 9, 10, 11 and the graining plate and baffle may also be heated. The graining plate may be placed in an entry chamber (16) of greater cross-section than the inflow chamber 4 and upstream thereof (see Fig. 5, not shown).
Patent GB-1031473-A (GB)
Title: Controlled rectifiers
Inventor: MILLINGTON DAVID EVERITT
IPC: H01L29/00
Filed: 1961-08-03
Abstract: 1,031,473. Semi-conductor devices. JOSEPH LUCAS (INDUSTRIES) Ltd. July 18, 1962 [Aug. 3, 1961], No. 51358/65. Divided out of 1,031,451. Heading H1K. A PNPN controlled rectifier is prepared by diffusing acceptor into opposite surfaces of an N-type wafer, forming a diffused N-type region (the cathode) in one of the P-type layers (the gate), diffusing additional acceptor into the gate layer, masking the gate-cathode junction and plating the exposed regions to form gate and cathode electrodes. The wafer is prepared as described in Specification 1,031,451, and electrodes are provided by plating with nickel, sintering, cleaning in hydrofluoric acid and replating with nickel.
Patent GB-1016810-A (GB)
Title: Improvements in or relating to electron guns
IPC: H01J25/42
Filed: 1963-12-31
Abstract: 1,016,810. Travelling wave tubes. M-O VALVE CO. Ltd., and G. SMALL. Dec. 7, 1964 [Dec. 31, 1963], No. 51467/63. Heading H1D. A crossed-field electron gun, e.g. for a backward wave M-type travelling wave tube, has an electron emitting surface 21 and a plate electrode surface 22, the distance between the surfaces increasing in the direction of the electron steam. The plate electrode may be planar or may curve with a steeper gradient in the direction of the electron flow. Specific dimensions are given.
Patent GB-1061318-A (GB)
Title: Improvements in or relating to grinding or abrading heads
Inventor: UHLMANN REINER
IPC: B24B41/04
Filed: 1965-12-09
Abstract: 1,061,318. Grinding. SCHWERMASCHINENBAU ERNST THALMANN. Dec. 9, 1965, No. 52340/65. Heading B3D. A grinding or abrading head comprises a spindle 2 which supports the grinding or abrading wheel 3 and is mounted with a sliding fit in cylinder roller bearings 5, 6 supported in a housing 1, the spindle being axially displaceable in the bearings by means of a fork 7 and supporting a gear 4 engaged with a driving gear 11 having a tooth width equal to or somewhat larger than the tooth width of gear 4 plus the displacement distance of the spindle. The gear 11 is supported by a shaft 10 which is mounted in bearings 12, 13 and driven through a clutch 9 from a motor 8.