baber/WOPTO huggingface dataset:
Patent GB-1228151-A (GB)
IPC: F02C9/26
Filed: 1967-02-09
Abstract: 1,228,151. Gas turbine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. April 30, 1968 [Feb. 9, 1967], No.6256/67. Heading F1G. Deceleration control apparatus for a gas turbine engine comprises a fuel-flow control, a manually controlled lever for operating the control, a lostmotion device connected between the control and the lever, and a hydraulic dashpot connected between the lost-motion device and the control for limiting the rate of movement of the control in the direction for reducing the supply of fuel to the engine. Fuel is supplied from a pump 8 to a gas turbine engine 9 via a throttle 10 operated by a manual lever 11. To avoid engine surge due to excessively rapid reduction of fuel-flow, the rate of closing of the throttle 10 in response to closing movement of the lever 11 is limited by a hydraulic dashpot 14, rapid closing movement of the lever 11 causing a spring 13c of a lost-motion device 13 to extend while the retarded responsive movement of the throttle 10 is occurring. Opening movement of the throttle 10 occurs without retardation, however, a spring-loaded valve 14e opening to render the dashpot ineffective and the parts 13a, 13b of the lost-motion device abutting to avoid lostmotion.
Patent GB-1228763-A (GB)
IPC: A44B11/25
Filed: 1967-06-20
Abstract: 1,228,763. Buckles. IRVING AIR CHUTE OF GREAT BRITAIN Ltd. 17 June, 1968 [20 June, 1967], No. 28495/67. Heading E2A. A buckle for a safety belt consists of a first part 11 and a second part 12, the second part including a casing 16 having a base wall 17 and upstanding side walls 18 with a latching plate 23 rockably mounted in the casing, said latching plate being bent about a line 24 transverse to the direction of forces between the buckle parts when under a tensional load so that the latching plate can be rocked into a position with the front portion of the latching plate (i.e. the portion of the latching plate on one side of the line) lying generally parallel to and against the base wall, said front portion having a transverse abutment which can engage a complementary transverse abutment of the first buckle part to transmit tensional load between the buckle parts when the first buckle part has been inserted between the base wall and the front portion of the latching plate to lie on the base wall and the latching plate has been rocked so that the front portion is generally aligned with the first buckle part against the base wall, a spring 32 normally biassing the front portion of the latching plate towards the base wall and release means 31 which can be depressed to rock the latching plate against the bias of the spring to release the first buckle part from the latching plate. As shown the casing is formed with lugs 22 and the latching plate abuts against the rear faces 27 of the lugs to transmit load on the latching plate to the casing. The latching plate is located in position by a screw 28. The latching plate has two ears 26 connected by a narrow tongue to the remainder of the latching plate and the ears provide the transverse abutment; the first part 10 has two ears 14 which provide the transverse abutment of this part. A thin metal cover 29 covers the casing and is clipped onto inwardly projecting lugs 30 near the front end of the side wall and onto the side walls themselves at the rear end of the casing. The release means 31 is disposed between the cover and the latching plate and is hooked onto the lugs 30; the cover has a hole to enable the release means to be depressed. The casing has an opening 20 in its base wall which contains a slidable bar 20 around which one of the straps of the safety belt is looped the strap being trapped between the bar 21 and the edge of the opening. The first buckle part has two slots 13 for receiving another strap of the safety belt.
Patent GB-1231340-A (GB)
IPC: G06G7/52
Filed: 1969-05-23
Abstract: 1,231,340. Random number generator. J. PERTHEN. 23 May, 1969, No. 26351/69. Heading G4D. A system for providing a random distribution of numbers comprises a noise generator 1 and amplifier 2 feeding a digital voltmeter 3 having a sawtooth characteristic. The potential of the noise U R  varies about a mean value U M . The sawtooth voltage follows a path such as t 0 -t 1 , a periodic reading at a time such as t x  giving a reading U x  In a modification (Fig. 6, not shown) the amplifier charges a capacitor which is periodically connected to a high-ohmic voltmeter.
Patent GB-1233947-A (GB)
IPC: B65H21/02
Filed: 1968-11-25
Abstract: 1,233,947. Feeding webs. SCHNELLPRESSENFABRIK KOENIG & BAUER A.G. 25 Nov., 1968 [7 Feb., 1968], No. 55892/68. Heading B8R. The tension in a web 6 being fed to a printing press is controlled by adjusting the speed of a belt 3 driving the supply reel which is mounted on a stand 1, this adjustment being effected so that the web is fed in register with the press; signals representative of registration errors are applied to a setting device, e.g. a pneumatic cylinder 8, linked to a dancing roller 7 the movement of which controls the speed of the belt drive 3. When the supply reel is almost exhausted, a spare reel 2 is moved into operative engagement with the belt drive 3 and the tension in the expiring web is then controlled by adjustment of an induction brake 5 acting on the expiring reel 4. The control means for the brake 5 includes a regulating resistor 10 linked to a spring 15 and a second pneumatic cylinder assembly 12 which also receives the registration-error signals. The arrangement is such that the position of the roller 7, and thus the speed of the belt drive 3, does not alter during reel change, whereby the circumferential speed of the spare reel is synchronized with the speed of the expiring web so that the joining of the new web to the old can be effected by conventional pasting and severing means.
Patent GB-1234187-A (GB)
IPC: E05D5/02
Filed: 1967-09-05
Abstract: 1,234,187. Detachable hinge. MARLER HALEY (MFG) Ltd. 29 Aug., 1968 [5 Sept., 1967], No. 40485/67. Heading E2F. [Also in Division A4] A hinge for releasably joining together screens comprises two complementary and interengaging body members 14', 14", each body member having an integral support member 13, 13' projecting therefrom, and each support member having integral therewith a locating member in the form of a prong 6 for insertion in a groove 3 of a screen, and a pintle 14 securing the body members together.
Patent GB-1257001-A (GB)
IPC: F02C3/30
Filed: 1970-01-05
Abstract: 1257001 Gas turbine plant; turbine blades UNITED AIRCRAFT CORP 5 Jan 1970 [7 Jan 1969] 410/70 Headings C5G G10B and G11 [Also in Division F4] The invention relates to a method of attenuating sulfidation attack in gas turbine engines subject to the ingestion of alkali metal salts in which the gas stream containing the salts at elevated temperature is exposed to at least one oxide selected from the group consisting of the oxides of chromium, tin, samarium and niobium. The invention is applicable in the case of gas turbine engines operating in an environment containing sea salt, and acts to prevent the adverse interaction of the alkali metal salts, principally sodium sulphate formed by reaction between sea salt and the combustion products of a gas turbine engine, with the engine alloys or coatings. In one arrangement, a compound mixed with the fuel yields the desired oxide during the combustion process e.g. two fuel additives chromium acetyl acetonate and chromium iso-octadecylsuccinic anhydride were added to JP-5 fuel, the latter additive being soluble in this fuel and the former being dissolved in benzene prior to additon to the fuel. The chromium oxide reacts with the gaseous sodium chloride to form sodium chromate which at the elevated temperature is present as a gas and no deposition occurs. In a second arrangement the sulfidation inhibitor, chromium oxide was injected with the sea salt solution into air entering the combustion section, the inhibitor being added in the form of the water soluble compound ammonium chromate (NH 4 ) 2 CRO 4  which readily decomposes in the combustion flame to form Cr 2 O 3 . In a third arrangement a suitable oxide may be provided as a coating on the component surface, the coating being applied for example by electroplating, flame spray, plasma spray &c. For example a layer of chromium metal may be applied to the component and converted to the oxide by exposure at high temperature to air.
Patent GB-1264229-A (GB)
IPC: H04N9/455
Filed: 1969-05-19
Abstract: 1,264,229. Automatic frequency controlled transistor oscillator. RCA CORPORATION. 19 May, 1969 [22 May, 1968], No. 25381/69. Headings H3A, H3R and H3T. An oscillator 60 comprises a resonant circuit having two parallel paths, the first including a crystal 61 and a variable reactance, e.g. varactor 58, and the other comprising capacitance 73, 74 which is large compared with the capacitance of the first path. The oscillator is used as the colour burst oscillator in a TV receiver which is phase locked to the colour burst by gating the colour burst signal of amplifier 24 with a gate 32 and comparing it with the oscillator output in a phase comparator 40. The resulting error signal is used to control varactor 58.
Patent GB-1265145-A (GB)
IPC: C08G65/38
Filed: 1968-03-27
Abstract: 1,265,145. Halophenylsulphonylphenols. IMPERIAL CHEMICAL INDUSTRIES Ltd. 25 June, 1969 [27 March, 1968 (2)], Nos. 33306/71 and 14766/68. Divided out of 1,265,144. Heading C2C. The invention comprises compounds of the formula wherein X is halogen, or an alkali metal salt thereof. They may be obtained by treating 3- (-4-chlorophenylsulphonyl) nitrobenzene with a source of OH anions in a polar liquid diluent. In an example 3-(4-chlorophenylsulphonyl) nitrobenzene is reduced to 3-(4-chlorophenylsulphonyl)-aniline and diazotized to yield the compound of the above formula. The products are useful for preparing aromatic polysulphones.
Patent GB-1266026-A (GB)
IPC: H01L23/488
Filed: 1969-05-01
Abstract: 1,266,026. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORP. 1 May, 1969 [9 May, 1968], No. 22220/69. Heading H1K. In a device comprising a three or more zone semi-conductor wafer sandwiched between massive contacts bonded via annular angle-shaped members (e.g. 122, 126 in Fig. 4) to opposite ends of an insulating sleeve, a contact to a further zone of the element extends in an insulated manner through a hole in one of the massive contacts. In the typical arrangement shown in Fig. 4 conventional materials, which are however specified, are used for the various parts. Contact to gate electrode 154 of the thyristor is made via the head 200 of pin 194 which is urged downwards by spring 212 acting through metal diaphragm 184 and alumina sleeve 176. Sealing of the contact assembly is effected by brazing the diaphragm to the massive end contact 156 and the sleeve and the pin head to the sleeve. The pin, which is kinked to allow for thermal expansion, is centred by PTFE ring 208 on which the spring is seated and is sealed to an epoxy coated strip 208 disposed in a slot in the top face of contact 154. The contact may be externally connected through this top face or through a tab formed integral with or bonded to flange 126. In a simplified arrangement contact to the gate electrode, which in this case may alternatively be disposed at the edge of the wafer, is made by a rod which extends through an insulated sleeve in the end contact and is bent over if desired into a groove in its top face to bring it out at the side of the casing.
Patent GB-1266467-A (GB)
IPC: B65D19/00
Filed: 1970-08-12
Abstract: 1,266,467. Lifting pallets. MENASHA CORP. 12 Aug., 1970 [21 Aug., 1969], No. 38950/70. Heading B8H. A pallet construction comprises a fibre-board platform 7 which is supported on plastics legs, each leg comprising a cup portion 10 which is connected to the platform 7 by means of a plastics locking ring 11 which has an annular groove 27 into which a locking shoulder 16 on the cup wall portion 10 fits, the cup 10 and ring 11 having annular flanges 12, 20 between which the platform 7 is compressed and frictionally held by protrusions 13, 14, 21, 22 as shown. Alternatively the ring and cup may be connected by means of a groove (67) in the cup portion into which an annular flange portion (68) on the ring is received, Fig. 7 (not shown), or the cup and ring may be connected by complementary screw threaded sections.  In modified pallet constructions, Figs. 8, 9 (not shown), bottom runner strips (8) or bottom pallets (4) may be attached to the bottom of the pallet feet or the pallet foot and locking ring may be formed as a single piece, Fit. 14 (not shown).
Patent GB-1267023-A (GB)
IPC: F04D29/04
Filed: 1970-07-28
Abstract: 1,267,023. Centrifugal and axial-flow pumps. WORTHINGTON CORP. July 28, 1970 [July 31, 1969], No.36457/70. Heading F1C. A centrifugal or axial-flow pump comprises an inducer 24 coaxial with and preceding the impeller 13, means being provided to exert a fluid-dynamic action in at least one peripheral zone of the pump casing coincident with or adjacent the suction side of the inducer so as to act on the main flow and on the return flow pre-set in the zone in such manner as to stabilize the position of the return flow under substantially all operation conditions. The means comprises a slot 25 through which liquid is injected at an angle so as to overcome the tendency for the return flow zone to extend upstream of the leading edges of the inducer blades at low delivery rates. The liquid comes from a collecting chamber 26 which is kept at a pressure substantially equal to the pump suction pressure by means of ports 29, 30 and is supplied with liquid from the delivery side 19 leaking past wear rings 17 into at least one channel 28 opening into the collecting chamber and also with liquid from the discharge zone 21 of the inducer leaking past a clearance 22 into the channel. In order to balance end thrust, a chamber 23 receiving liquid leaking from the delivery side 19 past wear rings 18 is kept at the suction pressure, e.g., by being connected via a pipe 31 with the chamber 26. If the suction pressure is materially higher than the atmospheric pressure, a regulating valve may be provided in the pipe 31 to afford a compensatory increase in the pressure in the chamber 23.
Patent GB-1289496-A (GB)
IPC: G01S13/62
Filed: 1969-11-25
Abstract: 1289496 Radar; Gunn effect circuits; frequency changing JAMES SCOTT (ELECTRONIC ENG) Ltd 9 Sept 1970 [25 Nov 1969] 57584/69 Addition to 1254443 Headings H3F H3T and H4D In a C.W. Doppler radar including a microwave generator consisting of a Gunn effect device mounted in a resonant cavity the received signals are applied to two mixer diodes which have 90-degree phase separated local oscillations applied thereto and means are provided to derive from the diode output signals the magnitude and direction of the target velocity. The Gunn effect device 4 is mounted in a waveguide cavity 3 tunable by a variable short circuit 7 and screws 8. The mixer diodes 10 mounted in a waveguide connecting the cavity 3 and horn antenna 1, are separated by a one-way 90- degree phase shifter comprising a ferrite block 14 and magnets 15. The local oscillation signals are delayed by 90 degrees by this arrangement but the received signals travelling in the opposite direction from horn 1 are unaffected. The beat frequency signals from the diode outputs 11, 12 are thus 90 degrees apart and may be fed either to a 2-phase synchronous motor, the direction of the ensuing rotation thus determining the sense of the velocity or they may be fed to electronic means determining which output lags. The signals are both processed in apparatus as described in parent Specification to give the magnitude of the velocity. Reference has been directed by the Comptroller to Specification 1,214,833.
Patent GB-1290394-A (GB)
IPC: G01N27/30
Filed: 1969-12-22
Abstract: 1290394 Electro-chemical analysis H LIST 22 Dec 1969 [23 Dec 1968 4 Dec 1969] 62435/69 Heading G1N An electrode e.g. for analysis of blood gases has the tip 6 covered by a gas permeable membrane 7 held by a rubber ring 8 and is mounted in a cylindrical housing 10 so that the tip just projects through the lower bore 12 in which it is sealed. An annular reference electrode 5 may surround the sensor electrode stem within the housing and electrolyte may be introduced through a hole 21 which is afterwards sealed with tape. Modifications. Fig.10 (not shown) the membrane may be in the form of a long bag sealed to the electrode body by a rubber ring (44) above the reference electrode. MOUNTING IN MICROCELL.-FIG. 4 The lower end of the electrode housing may be tapered as at 25 to mate with a conical bore 33 in a thermostatized cell housing, so that the membrane on the electrode tip is adjacent a capillary bore 34. Alternatively an external rubber gasket 24  at the lower end of the electrode housing may fit into a cylindrical bore in the cell Fig. 5 (not shown). ELECTRODE ASSEMBLING JIG.-FIGS. 7 AND 8 The rubber ring 8 is placed on a tapered mandrill 40 and is supported on a shoulder 38 in the base member 36 with the membrane sheet 41 above held by an annular weight 42. The electrode tip 4 is lowered through the weight and rubber ring, ejecting the mandril. Alternatively the membrane may be secured by a collar 47 to the lower part of the housing 46 and filled with electrolyte 22 and the electrode assembly is inserted and glued to the housing at 50. The rubber ring 52 is then pushed over the end of the electrode and the protective sleeve 51 fitted.
Patent GB-1290699-A (GB)
IPC: C03C27/12
Filed: 1969-12-30
Abstract: 1290699 Laminates BADISCHE ANILIN- & SODA-FABRIK AG 30 Dec 1969 [2 Jan 1969] 63218/69 Heading B5N A thermally insulating laminated glass composite comprises at least two superimposed sheets of glass or transparent plastics material, at least one of the sheets being glass, and, between the or each pair of adjacent sheets, a non-foamed interlayer of a thermally solidified aqueous alkali metal silicate having a thickness of from 0À3 to 10 mm. The alkali metal silicate layer, e.g. sodium silicate, may contain a reinforcement, e.g. wire mesh and/or glass fibres and/or fillers, e.g. glass powder. The glass sheet(s) may also contain wire reinforcement. Specified plastics materials are rigid polyvinyl chloride and polymethacrylate. The laminated glass composite may be made by applying an aqueous alkali metal silicate solution to a sheet of glass provided with a frame around its edges, heating at a temperature of from 105 to 130 C. and applying to the resultant solidified layer an adhesive coated layer of glass or transparent plastics material, suitable adhesives being a water-glass solution, a talc loaded water glass solution or a mixture of an epoxy resin with a silicon compound. In an alternative method, a prefabricated sheet of thermally solidified aqueous alkali metal silicate is bonded between two sheets of glass. Examples are given.
Patent GB-1297369-A (GB)
IPC: A61H23/02
Filed: 1970-05-04
Abstract: 1297369 Ultrasonic therapy LINDEN LABORATORIES Inc 4 May 1970 [20 March 1970] 21429/70 Heading A5R A device for carrying out ultrasonic therapy consists of a bath 1 adapted to contain a liquid, means, such as transducers 2 attached to said bath, to convey ultrasonic acoustic energy through said liquid and means, such as a variable frequency oscillator 4 and a power control 5, for adjusting the operating parameters of said energy. The frequency may be in the range 50-250 kc./s., and the power level may vary up to 1 watt per sq. cm. of skin surface within said liquid. The part of an animal undergoing treatment may be enclosed within an acoustically transparent container (21), Fig. 3 (not shown), containing a medication (22), said container being immersed in said liquid during treatment which may include cleaning of a wound. The device may be mounted on wheels for portability.
Patent GB-1304696-A (GB)
IPC: C07C51/41
Filed: 1970-02-06
Abstract: 1304696 Preparation of terephthalic acid CESKOSLOVENSKA AKADEMIE VED 6 Feb 1970 5717/70 Heading C2C A method of preparing ammonium terephthalate comprises treating a solution containing terephthalate ions and alkali metal ions with a water soluble ammonium salt and filtering the treated solution to obtain solid ammonium terephthalate and a filtrate, distilling the filtrate to yield a gaseous mixture of ammonia and carbon dioxide and a distillation residue, recycling the gaseous mixture for use in treating the terephthalate ion solution and reacting the distillation residue with benzoic or phthalic acid to form an alkali metal benzoate or phthalate.
Patent GB-1306078-A (GB)
IPC: C04B35/591
Filed: 1969-07-28
Abstract: 1306078 Silicon nitride products JOSEPH LUCAS (INDUSTRIES) Ltd 10 June 1970 [28 July 1969] 37716/69 Heading C1A Silicon nitride products are prepared by a process as in Specification 1,280,459 wherein the said inert fibrous material consists of carbon fibres coated with refractory material which aids bonding between the fibres and silicon nitride and prevents reaction between said fibres and silicon nitride. The coating in an embodiment comprises a first layer of silicon carbide, which prevents reaction between k and Si 3 N 4 , and a second layer of Si 3 N 4 . The SiC may be replaced by boron carbide, zirconium diboride, or titanium diboride.
Patent GB-1314884-A (GB)
Title: Manufacturing target electrodes for x-ray tubes
IPC: H01J35/10
Filed: 1970-05-28
Abstract: 1314884 Electro-depositing W or W-Re MULLARD Ltd 28 May 1970 25789/70 Heading C7B In manufacturing a rotary target electrode for an X-ray tube, a metal layer of tungsten or tungsten-rhenium is electro-deposited on an electrically conductive substrate disc from a bath of fused salts comprising a mixture of:- (a) an alkali metal tungstate or a mixture of an alkali metal tungstate and an alkali metal acidic rhenium salt, (b) an alkali metal borate or phosphate, and (c) tungstic oxide or a mixture of tungstic and rhenium oxides. Specified conditions are:- a substrate of W, Mo, W-Mo, an alloy based on W or Mo or pre-plated carbon; a W anode; a bath at 850-1000‹C. comprising (a) Na Li Wo 4  and optionally sodium lithium perrhenate, (b)Na Li B 2 O 4  or sodium lithium phosphate and (c) WO 3  and optionally rhenium oxide; a N 2  atmosphere; and electro-deposition using a current density exceeding 0À01A/cm<SP>2</SP>, e.g. using periodic reverse plating with identical forward and reverse currents of 5 A/cm<SP>2</SP> for 10 secs and 1 sec respectively, to produce a deposited layer at least 100 microns thick. Deposited layers may be smoothed by grinding. Specification 777591 is referred to.