baber/WOPTO huggingface dataset:
Patent GB-1074248-A (GB)
Title: High resistivity gallium arsenide and process of making same
IPC: C30B15/02
Filed: 1964-09-16
Abstract: A high resistivity crystal of gallium arsenide is doped with at least 0.2 part per million by weight of chromium.  The crystal may have a resistivity of at least 108 ohm centimetres at 300 DEG  K.  It may also contain other electrically active ingredients, the dominant constituent being chromium.  The crystal may be grown by pulling from a melt of gallium arsenide, the latter being prepared by raising liquid gallium to the melting point of gallium arsenide and maintaining arsenic vapour in proximity therewith (see Division B1).ALSO:A rod of gallium arsenide containing 0.2-360 ppm of chromium is pulled from a melt formed in situ from gallium and chromium in an alumina crucible (65) and arsenic vaporised from a mass (75) outside the crucible.  The crucible is contained in a graphite susceptor (63) which is heated by an induction coil (67).  The pulled rod is rotated at 25 rpm.  The pull rate is 1.5 in/hr. Pulling is effected in argon at atmospheric pressure.
Patent GB-1024446-A (GB)
Title: Improvements relating to control of hydraulic mechanisms on tractors for implements attached thereto
IPC: A01B63/111
Filed: 1962-10-08
Abstract: 1,024,446. Tractor power-lift mechanisms. INTERNATIONAL HARVESTER CO. Oct. 8, 1962 [Nov. 1, 1961], No. 37965/62. Heading A1P. A tractor power lift mechanism having a control valve 75 actuated by manual lever 46 for position control and by manual lever 34 for setting an automatic draft control initiated by movements in the upper link 17 of a three-point linkage and having flow control means 100 operated by manual lever 116 for controlling the rate of drop of the linkage, all as described in Specification 994,992 is characterized in that the valve 75 is operated by a linkage 125 when the lift linkage reaches a full-raised position in order to prevent excessive pressure in the system. The linkage 125 comprises a pin 124 fixed to a crank arm 23 of the rock shaft 24, the pin being arranged to engage, in the fully-raised position of the lift linkage, an arm 126 of a bell-crank 126, 128, the arm 128 of which engages pin 45 to move the operating rod 44 of the valve 75. During this movement the draft control link 30 pivots about 29a and pin 31 slides in a slot 38 in the rod 33.
Patent GB-1473503-A (GB)
Title: Releasable valves for gas filled bottles
IPC: F16K1/30
Filed: 1974-07-30
Abstract: 1473503 Valves WALTER KIDDE CO Ltd 30 July 1974 [10 Aug 1973] 38102/73 Heading F2V In a valve for controlling the release of inflating gas from a bottle 11 a valve 15 is depressed by a screw-threaded stem 32 of a pulley 26 rotated by a pull cable 33. A bursting disc assembly 41 is provided in a side boss 13 of the valve body 10, the gas being vented to atmosphere via radial drillings 44. In an alternative arrangement of the bursting disc, Fig. 4 (not shown), the gas is not vented to atmosphere but to the normal valve output socket.
Patent GB-357447-A (GB)
Title: Improvements in or relating to collapsible hoods, particularly for motor driven vehicles
IPC: B60J7/06
Filed: 1930-12-22
Abstract: 357,447. Road vehicle hoods. SOC. ANON. A. SAURER, Arbon, Switzerland. Dec. 22, 1930, No. 38542. Convention date, June 17. [Class 108 (i).] In hoods of the kind wherein the roof covering is carried by cross members which by driving means, such as chains, are movable into their positions for erecting and lowering the hood, the cross members are directly connected to the chains &c. and inserted together with the covering and chains &c. into a chamber during the lowering of the hood. The cover 6 is connected positively to cross ribs 9a, 9b and slidably to cross ribs 9 which ribs are directly connected to chains 8 guided and constrained by guides 7 so that they move the hood by tension or by compression. A chamber 29 at the rear comprises spiral guideways 28 at each side connected by cover-plates and the hood is drawn into the chamber or forced out by means of toothed wheels 34, 35 driven by hand or otherwise from the shaft 41, Fig. 5. The cross ribs comprise hollow tubes of rectangular section and are connected to the chains 8 by a pair of rods 10, 11, Fig. 2, provided with clamping screws 14 and springs 15 and adapted to slide in the rib 9 to compensate for want of parallelism in the guides 7. The cover 6 is carried by leaf springs 16 embracing at one end a wire cable 22 and at the other end pressed outwardly by a spring-pressed fork 17. Pockets formed by stitching the turned part 23 of the cover to the top side of the cover allow of relative movement in the longitudinal direction of the vehicle between the cross rib and the cover. An inner lining 48 is secured to the cover 6 by webbing 49 and to the end ribs 9a, 9b and the cover 6 is provided by a channel 25 which cooperates with a similar channel 26 to tighten the cover when it is being moved into closed position. Rear windows 46, 47 are provided which are not obscured by the hood in either of its extreme positions. Steel bands or cables may replace the chains in which case the cross members may be provided at their ends with carriages running in the guides 7.
Patent GB-1445633-A (GB)
Title: Electrostatic discharging or charging device employing liquid
IPC: G03G15/30
Filed: 1973-08-16
Abstract: 1445633 Charging and discharging surfaces CANON KK 16 Aug 1973 [17 Aug 1972 25 Oct 1972 8 Nov 1972 13 Nov 1972] 38814/73 Heading G2H Photo-conductive drum 1 is imaged by light from fibre optic array 3 and simultaneously charged by electrical potential applied to a liquid layer 7 between the drum and the array, the liquid being fed through pipe 6 and removed by blade 8, which is lubricated by a second liquid 9. Preferably both liquids are insulating, they are immiscible and they are of different densities to facilitate separation for reuse. Alternatively the lubricating liquid may be in solution or mixture with the liquid of the layer 7, or the liquid of the layer 7 may be itself a lubricant.
Patent GB-1324749-A (GB)
Title: Processes for the metering and conveying of materials
IPC: B01F7/00
Filed: 1971-08-19
Abstract: 1324749 Mixing apparatus BUSS AG 19 Aug 1971 [1 Sept 1970] 38920/71 Heading B1C Apparatus for mixing, metering and conveying granular, viscous or plastic material comprises a rotatable and reciprocatable shaft 7 having mixing paddles 9 interdigitating with and wiping teeth (13, Fig. 2 not shown) in the casing, the shaft is rotated through slidable gears 22, 23 and independently reciprocated by a hydraulic or pneumatic cylinder 25 which is controlled so that the forward or conveying stroke is performed faster than the return stroke, generating a plug flow in the material. The length of stroke may be adjusted to ensure clearance of the teeth (13) by the paddles 9 by shifting the point of connection of the piston rod 26 along the clevis 27, and the material throughput and residence time by altering the rate of reciprocation and/or the piston speed. A beat exchange fluid may be circulated through the jacket 3 and through ducts (10, 11 Fig. 3 not shown) in the shaft 7 and cavities (12) in the paddles 9. Advantageously the shaft performs a full rotation at each end of each stroke to wipe the paddles.
Patent GB-947076-A (GB)
Title: Improvements in blood pressure measurement
IPC: A61B5/0285
Filed: 1960-11-16
Abstract: 947,076. Blood pressure measurement. CUTLER-HAMMER Inc. Nov. 16, 1960 [Nov. 27, 1959], No. 39343/60. Heading A5K. An apparatus for measuring the arterial blood pressure determines the time taken for the blood to travel between two fixed points, this being dependent on the pressure. A transducer 10 is attached to the arm, adjacent to the brachial artery, and is used in conjunction with an oscillator 13 to impress a series of relatively high frequency pressure waves on the blood flowing through the artery. At a point lower down the arm, sufficiently removed from the transducer 10 for the pulses not to be transmitted through the tissue, two pressure sensitive pick-ups 14, 15, separated by a predetermined distance D, are attached over the same artery. The pressure waves received by these pick-ups and carried along by the blood flow, are necessarily displaced in phase, the displacement giving a direct indication of the velocity of the blood. Consequently the phase displacement is detected in a device 16 which passes a proportionate output to an indicator and recorder 17. This may be calibrated, for each patient individually, to indicate the blood pressure directly.
Patent GB-394519-A (GB)
Abstract: 394,519. Cylinders ; two-stroke engines. DEVANEY, G. P., Well House, Great Amwell, Hertfordshire. Sept. 15, 1932, No. 25702. [Class 7 (ii).] In a two-stroke engine cylinder two or more scavenging air valves 11 are each opened during a successive cycle. If two valves 11 are provided, they are opened by separate cams 15 on a half-time cam shaft 14 which also has a double-faced cam for operating a mixture or gas valve 13 ; exhaust takes place through piston-controlled ports 29. Part of the air, compressed by a compressor 20, is diverted to a carburetter 26 and the mixture is further compressed by a compressor 21. Throttle valves 24, 27 may be separately or conjointly controlled. The compressors 20, 21 may be driven from the main shaft and the cam shaft respectively. In a gas engine, the carburetter 26 is replaced by a pressure-stabilizing chamber.
Patent GB-845608-A (GB)
Title: Di- and tri- nuclear phenols having antioxidant properties
Inventor: BAILEY HUBERT CHARLES
IPC: C09K15/08
Filed: 1957-12-19
Abstract: A composition comprises an organic material susceptible to oxidative deterioration and one or more compounds of the formul : <FORM:0845608/IV(a)/1> where R1, R2, R3 and R4 are alkyl groups containing up to 9 carbon atoms, where at least one of the groups R5, R6, R7, R8 and R9 is an alkoxy group containing up to 9 carbon atoms, the remainder being alkyl groups containing up to 9 carbon atoms and x is a methylene, ethylidene or isopropylidene group or a sulphur atom.  The organic material may be for example polyvinyl chloride, polyethylene or polypropylene and compositions containing them, together with the usual plasticizers and stabilizers, are described.ALSO:The invention comprises compounds of the formula: <FORM:0845608/IV(b)/1> where R1R2R3R4 are alkyl groups containing up to nine carbon atoms, X represents a methylene, ethylidene, or isopropylidene group or a sulphur atom, at least one of R5R6R7R8R9 represent an alkoxy group containing up to nine carbon atoms and the remainder representing alkyl groups containing up to nine carbon atoms.  The di-nuclear compounds may be prepared by condensing the appropriate phenol with form-aldehyde, acetaldehyde, acetone or sulphur dichloride and the trinuclear compounds where X is a methylene group by condensing 2 moles of an alkyl or alkoxy phenol with one mole of a dimethylol alkyl or alkoxy phenol.  The examples describe the preparation of 2,21-methylene-bis-(4-methyl-6-methoxy-phenol), 4,41-methylene-bis-(2-methoxy-6-tert. butyl-phenol), 2,21-thio-bis(4-methyl-6-methoxy-phenol) and 2,6-bis (2-hydroxy-3-methoxy-5-methylbenzyl)- 4-methyl-phenol.  The compounds may be used as anti-oxidants in plasticiser esters e.g. dioctyl phthalate.  The Provisional Specification mentions that the link X may be a sulphoxide link or a tertiary nitrogen atom.
Patent GB-855322-A (GB)
Title: Device for localising rapid variations of temperature at predetermined points in tunnel type furnaces, particularly in kilns for the baking of ceramic products
IPC: F27D19/00
Filed: 1958-12-08
Abstract: 855,322. Tunnel kilns. FORNI ED IMPIANTI INDUSTRIALI INGG DE BARTOLOMEIS S.p.A. Dec. 8, 1958 [July 3, 1958], No. 39489/58. Class 51 (2). In a tunnel kiln for firing ceramics having burners a, furnace gases pass through valvecontrolled offtakes c at about the level of the truck platforms and through ducts e to one or more injector chambers f provided with one or more injectors g connected to a fan h, the diluted gases being recirculated through a roof slot l. The recirculating device is disposed before a zone wherein the kiln temperature is rapidly increased.
Patent GB-1535537-A (GB)
Title: Universal joint
IPC: F16D3/224
Filed: 1976-09-24
Abstract: 1535537 Universal joints; seals UNICARDAN AG 24 Sept 1976 [25 Sept 1975] 39669/76 Headings F2U and F2B A double universal joint comprises an intermediate plate member 4 constrained to move radially in a casing 1, and part-spherical surfaces 11 on the individual joint members 10 each engaging a guide surface 25 on the casing and having a centre of curvature 12 offset from the joint centre 13 by distance 14 which is the same for both joints. The plate member permits only parallel sliding of the axis 5 so that both individual joints are forced to execute the same deflection due to the camming action of the joint members 10. Lubricant is retained in the casing by seals 16. If desired, the guide surface 25 on the casing may be spherical and the seals 16 replaced by sealing boots. One or two torque transmitting balls 8 with or without a cage may be employed. Alternatively the individual joints may be of the Hooke's type each having one yoke integral with the plate member and the other yoke engaging the guide surface on the casing.
Patent GB-1480383-A (GB)
Title: Suction cleaner filter bags
IPC: A47L9/14
Filed: 1974-09-16
Abstract: 1480383 Suction cleaners HOOVER Ltd 16 Sept 1974 [17 Sept 1973] 40255/74 Heading A4F [Also in Divisions B1 and B2]  A tank-type suction cleaner comprises a housing 10 with a hinged lid 11 and a fan unit 14 which draws air into annular space 16 through hose 18  and expels it through slot 15. A disposable dust bag B is located in space 16 with its mouth around the inner end 19 of hose 18. The bag construction constrains it to assume an arcuate shape when inflated Figs. 3-9 (not shown).
Patent GB-1142878-A (GB)
Title: Thin magnetic film storage device
IPC: H01F10/00
Filed: 1966-09-08
Abstract: 1,142,878. Magnetic storage apparatus. GENERAL ELECTRIC CO. 8 Sept., 1966 [12 Nov., 1965], No. 40256/66. Heading H3B. [Also in Division H1] A magnetic storage device comprises an anisotropic thin film layer on a planar baseplate superimposed by a conducting layer over which is formed a further thin film in contact with the anisotropic thin film to form a closed flux path around the conducting layer. A glass substrate 4 has formed thereon a plurality of columns comprising a nickel-iron thin film 7 formed on a highly conductive layer 6 of gold coated on the glass, the thin film being deposited in the presence of a magnetic field so as to have anisotropic properties at right angles to the columns. Copper digit/sense conductors 8 are then deposited on top of the films 7 and a further thin magnetic film 9 is deposited so as to be in contact with the edges of the thin film 7 to form a closed magnetic path surrounding the conductor 8. Overlaying the columns is an insulating layer 10 on which is deposited a plurality of parallel row drive lines 12 at right angles to the digit lines 7, a layer 11 of highly conductive material being interposed between the drive lines and insulating material 10. Writing-in is achieved by simultaneous energization of the digit and drive lines appropriate to the position of the storage element and the value of the bit to be stored. Read out is by pulsing the appropriate drive line, the outputs being obtained from the digit/sense lines and is non-destructive. In the arrangement of Fig. 3 (not shown), a pair of devices shown in Fig 2 are bonded on to opposite surfaces of a common ground plate.
Patent GB-829386-A (GB)
Title: Improvements in buttons
IPC: A44B1/34
Filed: 1957-12-31
Abstract: 829,386. Buttons. WILCOX, N. T. W., and WHEELER, L. R. May 9, 1958 [Dec. 31, 1957], No. 40385/57. Class 43 In a button of the type in which a head 1 is secured to the shank 6 of a base 5 by a snap action after the shank has been forced through the material, the shank fits into a hole 3 in the head and the shank and head have a complementary interfitting annual recess 9 and annual rim 4. The recess may either be on the: shank or on the head. The button is made from resilient plastics material. The hole 3 may pass completely through the button head and the shank may have a flat or domed head 10 instead of the pointed head 7. The head may have a number of holes 3 for use with a number of separate bases 5 or with a single base, with a plurality of shanks.
Patent GB-894853-A (GB)
Title: Improvements relating to the preparation of vinyl chloride graft copolymers
IPC: C08F255/00
Filed: 1958-12-17
Abstract: Graft copolymers are obtained by polymerizing vinyl chloride in an aqueous medium with a hydroperoxide derivative of an alpha-olefin polymer in the presence of a polyethylene polyamine. Alpha-olefin polymers specified are those of compounds having the formula CH2 = CHR wherein R is an alkyl group, including copolymers of such olefins with each other and with ethylene; preferred polymers are polypropylene and polybutene-1.  The hydroperoxide derivatives of the above polyolefins may be prepared by the methods described in Specifications 832,068, 835,578 and 843,190.  Polyethylene polyamines specified are diethylene tetramine, triethylene tetramine and tetraethylene pentamine. Also present in the aqueous medium may be a dispersing agent, e.g. polyvinyl alcohol and substances, e.g. sodium hydroxide, to provide the medium with a pH of from 8 to 14.
Patent GB-919142-A (GB)
Title: Shut-off slide valve, more particularly a hot blast slide valve
Inventor: RAPPOLD HERMANN
IPC: F16K49/00
Filed: 1960-11-29
Abstract: 919,142. Valves. RAPPOLD & CO. G.m.b.H., HERMANN. Nov. 29, 1960, No. 41077/60. Class 135. A slide or gate valve 3, e.g. of a hot-blast valve, has its seating 18 formed integrally with the housing and with chambers 14 through which cooling fluid circulates, the chambers extending upwardly at 1 above the housing to accommodate the gate when the valve is open. Cooling fluid enters at 24, 25 and leaves at 33, 34 and is guided through the chambers, which are connected with each other at the bottom and sides of the gate space 27 by vanes 31, 35 within the chambers. The gate space may be drained of sludge at 26 and bottom openings are provided for cleaning the cooling chambers.
Patent GB-1019824-A (GB)
Title: Method of and apparatus for bending tubes
IPC: B21C37/28
Filed: 1963-10-18
Abstract: 1,019,824. Angular bending; destructable cores. TOLEDO HEATER CO. Oct. 18, 1963 [Oct. 31, 1962], No. 41198/63. Headings B3A and B3E. [Also in Division F2] A tube bending apparatus comprises first and second die means adapted to receive opposite end portions of a tubular workpiece, means for mounting the die means for relative arcuate movement along a predetermined path in a given plane from an initial to a rotated position, each die having surfaces for confining the sides of the work and surfaces for abutting opposite endwise facing surfaces of the work so that it is subjected to a longitudinal compressive force during the rotation of the die members. Each of a pair of opposite handed upper and lower die block assemblies comprises a block 20 in which are located a pair of segmented dies 14, 16 each subtending angles of e.g. 132À5 degrees retained therein by flanges which engage the block and a central hold-down bolt. The die 14 is dowelled to the block whilst the die 16 is freely rotatable through e.g. 95 degrees. Work-holding recesses are provided in the die surfaces. The assemblies are fitted to a machine (Fig. 6, not shown), the upper assembly to a head 88 reciprocated by a pneumatic means 94 and a toggle linkage to raise and lower the assembly for loading and unloading and the lower assembly to a frame 80. The fixed and rotatable dies of the assemblies are respectively located relatively to each other by dowels 68, 70; 62, 60. With a blank located in the dies, the dies 16, 16<SP>1</SP> are rotated by pneumatic means 98 and a pin 100 fitted to the die 16 and coupled to a connecting rod 104, to move the dies 16 into abutment with the dies 14 thereby bending the blank. Due to the flanged portions of the blank abutting the die recesses the bending operation is carried out with the blank in compression. The blank may be filled with bendable plastic or metal material. The blank is over-bent to allow for spring back. After releasing the pneumatic pressure the dies will spring back slightly thereby facilitating removal of the bent blank after raising the upper assembly. The degree of compression is varied by adjusting the position of the axis of rotation of the dies along the centre axis of the blank. In a modification only the outer half of the blank, with respect to the curvature of the bent workpiece is confined during the bending operation. The blank W (Fig. 9, not shown) is located in fixed and movable die members 210, 222 and the die 222 rotated along arcuate tracks by pneumatic means to effect the bending thereof. Subsequent retraction of the die 222 allows the workpiece to be removed from the fixed die.
Patent GB-970101-A (GB)
Title: A cyclically operating piezoelectric voltage source
IPC: H01L41/113
Filed: 1962-11-01
Abstract: 970,101. Piezo-electric generators. CLEVITE CORPORATION. Nov. 1, 1962 [Nov. 7, 1961], No. 41350/62. Heading H2A. A piezo-electric generator for spark ignition is arranged to compress the piezo-electric element 41a, 41b slowly and release it suddenly to produce the ignition impulse. This is done by means of a toggle 19, 21 which is actuated by a snail cam 57. The cam is adjustable by screw 63 and the toggle by screw 17. Current generated during the slow compression is dissipated through the resistances ra, rb and capacitance C of the elements, or through separate resistances or through a spark-gap. Specifications 712,803 and 918,925 are referred to.
Patent GB-1402117-A (GB)
Title: Process for the preparation of polyesters
IPC: H02K33/00
Filed: 1972-09-06
Abstract: 1402117 Polyesters prepared from cyclic acetals or ketals BAYER AG 6 Sept 1972 [8 Sept 1971] 41361/72 Heading C3R [Also in Division C2] A polyester having a hydroxyl number of less than 10 is prepared by reacting a compound which contains two carbonyl groups, or an anhydride thereof, with a cyclic acetal or ketal of a diol. The process may be carried out in the presence of a catalyst, e.g. p-toluenesulphonic acid. The examples describe reacting (1) 1,4- dioxaspiro-4,5-decane with (a) adipic acid, (b) polyesters containing two carbonyl groups derived from (i) adipic acid and ethylene glycol and (ii) adipic acid and hexanediol optionally with neopentyl glycol, and (c) polycaprolactone containing two carboxyl groups derived from caprolactone and adipic acid, and (2) with phthalic anhydride.