baber/WOPTO huggingface dataset:
Patent GB-1267245-A (GB)
IPC: G01L27/00
Filed: 1969-06-26
Abstract: 1,267,245. Programmed control of testing. BRITISH STEEL CORP. June 26, 1970 [June 26, 1969], No.32448/69. Heading G3N. An instrument is calibrated for use in controlling a dynamic process by applying to that instrument n different levels of input on n-1 occasions in a sequence that on each application of an input level it is immediately preceded by a different input level which is itself different from that proceding each of the other of said n-1 1 applications and measuring the output of the instrument and calculating the mean of the output values measured at each input level. In an embodiment, a pressure transducer exhibiting an hystersis effect with rise and fall of input signal is calibrated by the random application of a range of pressure valves and the resultant electrical output signals are analyzed to derive a 'best-fit' calibration line and a pair of parallel lines defining the accuracy and repeatability of the calibrated transducer. The resulting calibration is employed in a computer-controlled process to correct the readings of the transducer. It is stated that a resistance thermometer can be calibrated by a substitution technique and a programme for control of a process can be arranged to effect recalibration of the instruments monitoring the process at predetermined intervals.
Patent GB-1288082-A (GB)
IPC: G02B6/12
Filed: 1969-10-10
Abstract: 1288082 Electroluminescence WESTERN ELECTRIC CO Inc 10 Oct 1969 [11 Oct 1968 27 Dec 1968] 49780/69 Heading C4S [Also in Division H1] A semi-conductor injection laser operable continuously at room temperature comprises two portions of semi-conducting material 12, 14, Fig. 1, the latter having a narrower band gap than the former and containing a P-N juncton 25 spaced from the phase boundary 23 between the portions by a distance less than the minority carrier diffusion-length. The narrower band width portion 14 may be GaAs, the N-type region being Sn doped and the P-type intermediate zone 24 Zn doped, while the wider band gap portion 12 may be Al x Ga 1-x As or GaAs 1-x P x  which is rendered P-type by Zn doping. Pumping current is supplied from generator 18 via electrodes 20, 22, which may be of Ti/Au and Sn/Ni respectively, and heat is extracted by sink 16. Faces 28 and 30 are flat and may have a reflective coating, while faces 32 and 34 may be roughened or polished depending on the required cavity Q. Reflective faces with stripe patterns may be used for mode selection. In operation, the phase boundary confines injected electrons to the intermediate zone 24 because of the change of band gap across the boundary, thus lowering the lasing threshold current. The output in this embodiment is thus from the intermediate zone. In order to reduce the dependance of threshold current on temperature, deep states may be created near the conduction or valence bands. For example if deep acceptor states are provided in the intermediate and/or narrower band gap regions, Fig. 2B, e.g. by doping with Mn, Co, Ni, Cu or Al, lasing occurs in the doped regions by recombination of electrons in the conduction band with holes injected into the deep states from the valence band. Output is typically 9500 Š at room temperature, with a threshold current of 10,000 amps/cm.<SP>2</SP>. Deep states may be provided near the conduction and valence bands by creating tails on these bands, Fig. 4C, by heavy doping. 10<SP>19</SP>/cm.<SP>3</SP> of Si, Ge or Sn gives tails on both bands, while Te produces a tail on the conduction band alone and Zn a tail only on the valence band. Best tail formation is stated to be possible with a laser having P-type GaAs as the wider band gap material, and N-type In x Ga 1-x As or GaAs 1-x Sb x  as the narrower gap material. Alternative lasers based upon InP, InAs or InSb are stated to be possible.
Patent GB-1289992-A (GB)
IPC: B62D33/067
Filed: 1969-08-05
Abstract: 1289992 Tiltable vehicle cabs CHRYSLER UNITED KINGDOM Ltd 27 July 1970 [5 Aug 1969] 39201/69 Heading B7B [Also in Division E2]  A tiltable cab of a truck has a releasable locking device for preventing the tilting of the cab from the upright position. The cab is pivotally mounted at the forward end of a chassis having a rear cross member 10 carrying a channel member 13. A pin 17 extends through member 13 across an aperture 19 for engagement with a hook member 30. The member 30 is mounted on an eccentric disc 29 carried by a shaft 27 supported in brackets 26 secured to a plate 24 fixed to the cab floor 22. The hook member 30 is released from the pin 17, against the action of a spring loaded lever mechanism (not shown), by rotation of a lever 28 to permit tilting the cab. In a modification, Fig. 2 (not shown) the pin 17 is mounted on two spaced brackets (40) secured to the member 10.
Patent GB-1294967-A (GB)
IPC: B60C23/04
Filed: 1970-05-04
Abstract: 1294967 Tyre pressure indicator G E GARCIA 4 May 1970 21452/70 Heading B7C A tyre pressure monitoring apparatus comprises a radio transmitter, means for containing a power supply therefor, and a fluidpressure-responsive switch responsive to a pre-selected fluid pressure for energizing the transmitter, the apparatus being mountable within a volume defined by a wheel rim and a pneumatic tyre. In a preferred embodiment, described with reference to Fig. 2, a body member 55 of monitor 13 is generally integral with the valve of a tubeless tyre 53. A hard rubber disc-shaped portion 58 supports a valve stem 56 and has a generally cylindrical aperture 61 with a movable piston 63 mounted therein and connected to a T-shaped switch 65 adapted to close with contacts 66. One end of switch 65 is connected to a compression spring 67 which is adjustably held in position by a plug screw 69 threaded into aperture 61. A transmitter 78 is connected to the contacts 66 via leads 77, 79 and when the switch 65 is closed with contacts 66, the transmitter 78 sends radio signals via lead 81 to a ring-shaped antenna 85 mounted about the outside of valve stem 56. There may additionally or alternatively be a helical antenna 75 secured by glue to the portion 58 and connected to the transmitter 78. In a further embodiment, described with reference to Figs. 4 and 5, a generally ring- shaped body member 92 is adapted to be attached to the inside end of a valve stem 89 by means of a plurality of prongs 95. The body 92 has mounted therein transmitter means and valve means similar to that shown in Fig. 3.
Patent GB-1295888-A (GB)
IPC: F16J15/08
Filed: 1970-02-25
Abstract: 1295888 Seals; pipe joints PRESSURE SCIENCE Inc 25 Feb 1970 [8 Oct 1969] 9174/70 Headings F2B and F2G A seal, e.g. for high temperature and pressure pipe joints comprises a resilient ring 16 formed with a generally E-shaped section and having outer arm portions 17 projecting beyond a central arm 18 by 1À5-3À5 times the length of the central arm 18. Each portion 17 includes a region 20 for sealing engagement against a corresponding flange 4 or 4<SP>1</SP> welded to a pipe section (6), Figs. 2-3 (not shown), a pair of semi-circular constrictor bands 2, (2<SP>1</SP>), Fig. 1 (not shown), engaging over the flanges 4, 4<SP>1</SP> to retain them in contact under the action of eyebolts (11). A C-section ring 30, Fig. 4, may engage between the portions 17 to increase the loading for low pressure sealing, vent means 33 communicating with the interior of the ring 16, or alternatively, Fig. 5 (not shown), the free ends of the portions 17 may be turned inwardly for mutual engagement. The ring may be of stainless steel &c., possibly coated with rubber or the like, or with a metal, e.g. silver, gold, lead or indium.
Patent GB-1297437-A (GB)
IPC: F16D55/00
Filed: 1970-10-08
Abstract: 1297437 Spot-type disc brakes AISIN SEIKI KK 8 Oct 1970 [8 Oct 1969] 47812/71 Heading F2E A floating caliper spot-type disc brake has an actuator with two opposed pistons 5, 6 within a housing 7 at least one piston having its edge inside the housing formed as a right angle and its edge outside the housing chamfered or rounded. In the embodiment shown piston 6 has its face 6b forming a right angle and its outer face 6a rounded. In a further embodiment both pistons have their outer edges rounded and their inner faces forming right angles. Piston 6 is secured to a reaction transfer plate 2 by a tongue 11 thereof supported by an annular member 12 in a blind bore 13 in piston 6. Plate 2 is formed at its opposite end with a further tongue 15 two projections 18 of which fit into bore 16 provided on a rigid backing plate 17 bonded to friction pad 3. A second pad 4 is bonded to a backing plate 19, both plates 17, 19 being guided by retaining pins 20 sliding in bores of a support member 1. The pistons are actuated hydraulically through a port 22, Fig. 1 (not shown), and are sealed by dirt excluders 26, 27 and sealing rings 24, 25.
Patent GB-1297595-A (GB)
IPC: C07D/
Filed: 1971-01-21
Abstract: 1297595 Treatment of coccidiosis BRISTOLMYERS CO 21 Jan 1971 2829/71 Heading A5B [Also in Division C2]  Feed compositions for poultry comprise a foodstuff and a compound of the formula (R<SP>2</SP>=H, OMe; R<SP>4</SP>=H, Me, Et; R<SP>6</SP>=Cl, Br, I) or an acid addition salt thereof, or a mixture of such compounds. The active ingredients are useful in the treatment of coccidiosis.
Patent GB-1301357-A (GB)
IPC: G01S13/78
Filed: 1970-06-10
Abstract: 1301357 Pulse discriminators; transponders INTERNATIONAL STANDARD ELECTRIC CORP 10 June 1970 [13 June 1969] 28099/70 Headings H3P and H4L An arrangement for detecting a pair of pulses having a separation T comprises a shift register 6 for delaying the first pulse, an AND gate, e.g. 11 n-1 , for detecting coincidence between the second pulse and the delayed first pulse, and means for entering the first pulse into the register q successive times. Initially a "1" on line 17 enables AND 2 to allow the first of a pair of pulses at input 1 to set bi-stable 4 and apply a "1" to input E of shift register 6. Successive clock pulses from generator 20 set stages A1, A2 and then A3 to thoir "1" stage and, upon A3 setting to "1", AND 8 produces an output to reset bi-stable 4, thus applying a "0" to input E of register 6. The three consecutive "1"s are now stepped along the register until they arrive at stage A n-1  where they enable AND 11 n-1  for three successive clock periods. If the second pulse of the pair arrives during one of these three, clock periods, it is fed via line 12 to the other input of AND 11 n-1  to produce a "1" at its output. This "1" passes via OR 14 to switch bi-stable 16 to the state in which a "0" occurs on line 17, thus inhibiting AND 2 to prevent further inputs being applied to the register. The "1" output from AND 12 n-1  is also fed to unit 18 which indicates that a pair of the correct spacing has been detected. When unit 18 has completed its operation, it applies an output on line 19 to set bi-stable 16 again into the state in which a "1" exists on line 17. Other pulse spacings may be detected by further outputs from the register 6 each associated with its own AND gate 11 m-1 . In a modification, Fig. 8 (not shown), only two successive pulses are stepped along the register and the clock pulses fed to the stages of the register from which outputs are taken are phase shifted with respect to these applied to the initial stages. The apparatus may be used in a radar-responder.
Patent GB-1302363-A (GB)
IPC: F17C3/08
Filed: 1968-11-01
Abstract: 1302363 Refrigerating INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 30 Jan 1970 [1 Nov 1968] 51989/68 Heading F4H A cryostat is connected to a refrigerator by two pipes for the supply of liquid helium and the return of vaporized helium, the pipes being in close proximity at the point where they are connected to the cryostat. At least one of the pipes extends within the cryostat so that one pipe communicates with the liquid space and the other with the vapour space. As illustrated, the liquid pipe 4 is merely connected to the lowest point of the cryostat 1, wherein the vapour pipe 6 extends through the cryostat to the vapour space 7 in a neck 2. The cryostat walls, the pipes, and a neck closure 3 may all be of stainless steel, and a gold wire seal may be provided between the closure and the neck. In another embodiment, Fig. 1 (not shown), the pipes are connected to the closure and the liquid pipe is extended to the bottom of the cryostat. In a further embodiment, Fig. 3 (not shown), the pipes enter the cryostat midway of its height, the vapour pipe extending to the top of the cryostat and the liquid pipe to the bottom. The cryostat may house a superconducting stator winding of a homopolar dynamo-electric machine.
Patent GB-1313134-A (GB)
Title: Odour-absorbing pads particularly for use in surgical work
IPC: A61L9/00
Filed: 1969-04-24
Abstract: 1313134 Pads ASSOCIATED PAPER MILLS Ltd 17 April 1970 [24 April 1969] 20884/69 Headings A5R and AST [Also in Division D1] An odour absorbing colostomy pad or sanitary towel is formed by air-laying a mixture of dry, unimpregnated discrete fibres and finely divided odour absorbing carbon and impregnating the web with a latex binder. Preferably a mixture of 10% to 60% activated vegetable carbon and 10 to 85% high alpha cellulose wood pulp or bleached kraft wood pulp is air laid onto a backing material of cotton scrim, porous paper, nylon or other fabric carried on an endless foraminous belt. The web is impregnated with 5 to 30% of polyvinyl chloride or polyacrylate in the form of an aqueous emulsion, excess binder is removed by suction and the product dried under radiant heaters and then in contact with heated cylinders. The product preferably has an air permeability of 57 to 250 litres/minute/ 10 cm square/10 cm pressure differential water gauge and a thickness of 0.815 to 7 mm. The pad may be contained within a permeable envelope of paper, cloth or non-woven fabric.
Patent GB-1315307-A (GB)
Title: Turbo superchargers for internal combustion engines
IPC: F01D25/24
Filed: 1969-08-21
Abstract: 1315307 Turbo-superchargers CAV Ltd 10 Aug 1970 [21 Aug 1969] 41798/69 Heading F1G The invention relates to a turbo supercharger for an internal combustion engine and comprises a radial inward flow turbine 12 and a centrifugal compressor 14, the turbine rotor 19 and the compressor rotor being mounted at the ends of shaft 20. The shaft is mounted in a bearing housing 24 which is formed with an annular recess 25 to which air under pressure is supplied through ducts 29 in the compressor casing, the air passing through passages in a bearing sleeve 23 so as to form an air journal bearing; air also passes from the recess 25 to the rearward sides of the turbine and compressor rotors so as to form air thrust bearings. The bearing housing 24 is received within a casing 27 which is formed in two parts, one part comprising part of the turbine casing 13 and the other part comprising part of the compressor casing 15. The bearing housing is formed with stepped end portions which are received by corresponding portions of the casing parts. The casing parts 27 are held together by an annular clip 28 engaging flange portions of the casing parts. The turbine casing is formed with an axial outlet 16 and the compressor casing with an axial inlet 17. The turbine rotor blades and the bearing sleeve are formed of silicon nitride.
Patent GB-1318113-A (GB)
Title: Tobacco smoke filter
IPC: A24D3/02
Filed: 1970-10-01
Abstract: 1318113 Tobacco smoke filters CIGARETTE COMPONENTS Ltd 30 Sept 1971 [1 Oct 1970] 24831/70 Heading A2C A rod of fibres or filaments, e.g. crimped filaments of cellulose acetate, bonded to each other at their points of contact is formed with a cavity extending from its surface at each of at least two longitudinally spaced positions, longitudinally adjacent cavities being circumferentially displaced relatively to one another, and is enclosed by a tubular member, e.g. of stiff paper. As shown, a pair of diametrically opposite cavities 10, 11 and 16, 17 each tapering towards the rod axis, is formed at each of two longitudinally spaced positions along the rod. These positions may be sufficiently close together that a plane normal to the rod axis intersects both pairs of cavities. The surfaces of the ends 18, 19 of the rod and the region 6 between the two pairs of cavities are preferably adhered to the tubular enclosing member 7. The filter may be attached to a tobacco rod 1 by a piece of cork tipping paper 4. Instead of a pair of cavities at each position there may be a group of four, or a single cavity extending beyond the rod axis. Apparatus is described in which crimped cellulose acetate filaments are sprayed with glyceryl triacetate and formed into continuous cylindrical rod which is then deformed locally by heated, toothed wheels to provide the cavities. The rod is then passed through a garniture where it is enclosed in a paper wrapper and finally cut into multiple-length filter rods.
Patent GB-1320716-A (GB)
Title: Soft sided luggage case
IPC: A45C3/00
Filed: 1970-07-21
Abstract: 1320716 Suitcases DOMINION LUGGAGE CO Ltd 21 July 1970 35270/70 Heading A4G A centre-opening suitcase 1 has two rigid frames 4, 4', hinged together and, extending outwardly from each frame, a resilient peripheral portion 9 to which is attached a flexible side 11 of the case. The frame 4' which may be of metal embraces a rigid rim T against which the frame 4 abuts when the case is closed. Stitched or stapled to each frame is the resilient portion 9, which may be of plywood and the stitching 29 is covered by a plastics wearing strip B. The flexible side 11 of the case is stitched into a channel 17 around the edge of the portions 9, a filler 16 being provided, and is attached to the outside of the portions 9. Each half of the case may have a division wall 19, stitched to a hinge cover 21, and each division wall 19 may have a transparent panel 20.
Patent GB-1323413-A (GB)
Title: Nozzles for containers
IPC: B65D35/24
Filed: 1969-05-01
Abstract: 1323413 Collapsible tubes JOHN DALE Ltd 31 July 1970 [1 May 1969] 22310/69 Heading B8D A collapsible metal tube 4 is provided with an integral nozzle 1 of polyethylene or polypropylene comprising a neck sleeve 2, which has a flange 12 snap-fastened in a groove 13 of the tube neck and axial serrations 11 to prevent relative nozzle/neck rotation, a cylindrical insert portion 7 defining a dispensing bore, a tubular extension portion 8 and 9 defining, together with a polyethylene disc 17, a cavity 16, and square metering orifices 10 provided in the wall of the tubular extension portion so that the contents of the cavity 16 may be dispensed as stripes or striations with the main contents of the tube. The orifices communicate with internal axial grooves 14 in the insert portion.
Patent GB-1326503-A (GB)
Title: Supercharged internal combustion engines
IPC: F02B67/10
Filed: 1971-04-27
Abstract: 1326503 Supercharged I.C. engines SOC D'ETUDES DE MACHINES THERMIQUES 27 April 1971 11503/71 Heading F1B An exhaust gas driven turbo-blower 3' mounted at one end of a row of in-line cylinders 2 supplies charging air to the engine via an air cooler 9' mounted at the opposite end of the cylinder row. The pipe 8 directly connecting the turbo-blower 3' and cooler 9' includes a silencer 11 and may have additional air cooling. The cylinder banks of the V-engine, Fig.2 (not shown), have respective turbo-blowers and air coolers connected by the pipe 8.
Patent GB-1331060-A (GB)
Title: Fuel injection systems for internal combustion engines
IPC: G01P3/486
Filed: 1970-04-16
Abstract: 1331060 Fuel injection systems; photo electric control of fuel injection JOSEPH LUCAS (INDUSTRIES) Ltd 13 July 1971 [16 April 1970] 18316/70 Heading G1A and G1N In an I.C. engine fuel injection control system having at least one electromagnetic injector, the duration of the injector opening pulses is determined at least partly by a discriminator circuit in which a stream of pulses proportional to engine speed are averaged, the stream of pulses being provided by a generator which is arranged to provide, in each engine cycle, a greater number of pulses than the total number of pulses fed to the injector or injectors during the corresponding engine cycle. As shown, injectors 15a-15d are opened in pairs by pulses produced in generators 16a, 16b which are triggered by a generator 17, the duration of the pulses produced by the generators 16a, 16b being determined by a computer 19 in dependence upon throttle position, air temperature, and engine coolant temperature, and the output of a discriminator circuit 23, (modified by an intake manifold pressure transducer 24), which is fed with a stream of pulses from the generator 17 greater in number than the triggering pulses produced thereby. The generator 17 producing the stream of pulses may be in the form of an electromagnet transducer consisting of a coil adjacent a toothed disc rotated by the engine, e.g. the flywheel, Figs. 7 and 8 (not shown), or by a contact switch operated by protuberances on a disc rotated by the engine, Fig.6 (not shown). In these cases, the triggering pulses may be provided by capacitative pick-ups on the ignition leads, Fig. 8 (not shown). In a further embodiment, the generator 17 is provided by light sources and light sensitive devices positioned on opposite sides of an apertured disc rotated by the engine, Figs.2-5 (not shown).
Patent GB-1332334-A (GB)
Title: Optical telemetry systems
IPC: H04B10/00
Filed: 1970-12-08
Abstract: 1332334 Photo-electric data transmission DEFENCE SECRETARY OF STATE FOR 1 Dec 1971 [ 8 Dec 1970 3 Feb 1971] 58211/70 and 3792/71 Heading G1A In a telemetry arrangement wherein the  information is conveyed by a modulated source which is movable relatively to a detector means, the detector means comprises a plurality of photo-detectors or a plurality of optical elements so disposed that in every position of the source there will be at least one on which the optical signals are incident, and means are provided for combining the electrical or optical outputs. The optical elements may comprise fibre optics the outputs of which are combined by a lens. A gallium arsenide source 3, Fig. 1 rotates within a ring of photo-conductive cells 6, the source power being supplied by lamps 13 and solar cells 12. Elements are enclosed in gauge screens 14, 15 to suppress extraneous radiation. In a modification Fig. 3, (not shown) a ring of fibre optic ends are positioned to face the rotating source and the remote ends are directed by a lens on to  a photo-cell
Patent GB-1333491-A (GB)
Title: Dry-strippable wall covering and method of  manufacturing  same
IPC: D21H17/62
Filed: 1971-05-26
Abstract: 1333491 Coated fibrous steel material J & J MAKIN Ltd 26 May 1971 17116/71 Heading B2E A dry-strippable wall covering is made from a fibrous sheet material, especially pre-sized paper, by treating the surface fibres of the material with a freely flowing aqueous dispersion including paraffin waxes having melting points of 45-60‹C, a natural wood rosin, an acid protein colloid (particularly dimerised animal glue) as emulsion stabiliser and an aluminium salt of a low molecular weight aliphatic carboxylic acid (especially formic or acetic acid), the ratio by weight of the waxes to rosin being from 10:1 to 1:4, and curing the treated material such that the treated surface attains a temperature above the melting points of the waxes and the residual moisture content of the material is from 5 to 12%, the application weight of the dispersion being sufficient to produce a weight of cured dispersion of 3-9 g/sq. m. The dispersion may be applied by spraying or by roller, contact or air-knife coating. Curing may be effected for 1 minute in a multi-chamber tunnel drier having an air temperature of 150‹C and a wet-bulb temperature of at least 80‹C. The wall covering may bear decorative, advertising or instructional matter and may particularly be imprinted with a vinyl coating on its facing surface. It may be adhered to a wall by means of a cellulosic adhesive. Reference has been directed by the comptroller to Specification 1,229,811.