baber/WOPTO huggingface dataset:
Patent GB-1087134-A (GB)
Title: Improvements in and relating to semiconductor devices
Inventor: DALE JOHN ROBERT
IPC: H01L29/00
Filed: 1963-07-17
Abstract: 1,087,134. Semi-conductor devices. MULLARD Ltd. June 23, 1964 [July 17, 1963], No. 28298/63. Heading H1K. A heterojunction semi-conductor device is made by forming on a body of an A III B V  compound or a mixed crystal of two or more such compounds (e.g. GaAs x P 1-x ) a melt comprising said compound or mixed crystal and another A III B V  compound and a carrier material and recrystallizing to form an epitaxial layer consisting of a solid solution thereof. In a typical example an alloy of bismuth, 80 parts by weight, and gallium antimonide 20 parts, is placed on one face of a tellurium doped N-type gallium arsenide wafer and an alloy of bismuth, tin and platinum on the other. After etching in a solution of bromine in methanol the assembly is heated at 550‹ C. for 2 hours and then cooled over a period of 3 hours. After etching again platinum wires are soldered to the alloy residues to complete a rectifier diode with a PN heterojunction. A photo-diode is similarly formed but using an alloy of bismuth 78 parts by weight, cadmium 2 parts and indium arsenide 20 parts to form the PN heterojunction. In this case heating is to 580‹ C. for an hour and the cooling period is 4 hours. It is also suggested to use the method to form a collector junction of lower energy gap in a transistor, e.g. a light link transistor, and to use lead, tin or cadmium, or bismuth-tin or bismuth tinplatinum alloys in place of bismuth as the carrier material in which significant impurities may be incorporated to provide the desired conductivity characteristics in the recrystallized region. A number of suitable alloy compositions are specified.
Patent GB-1162050-A (GB)
Title: Improvements relating to Electrical Scanning Devices
Inventor: PENNINGTON-RIDGE MICHAEL DONOV
IPC: H01H19/58
Filed: 1967-06-20
Abstract: 1,162,050. Voltage measurement. FERRANTI Ltd. June 18, 1968 [June 20, 1967], No. 28307/67. Heading G1U [Also in Division H1] A scanning device for connecting low voltage signal sources such as thermocouples 23 one at a time to an amplifier 20 or similar electronic circuit for measuring purposes by a capacitancetransfer technique comprises two concentric circular tracks of alternate short and long contact segments 13, 14, on an insulating support, traversed by two rotatable resilient brushes 17 connected by a series CR combination. The brushes are moved by a motor-rotated spindle. As the brushes 17 move over a pair of long segments 14 the capacitor C charges to a voltage near that developed by thermocouple 23; the brushes then move on to the adjacent pair of short segments to connect the CR combination across the input of the high impedance amplifier 20. Optional further long segments 24 provide discharge segments, the segments of adjacent tracks being connected together. A resistance-capacitance filter may be connected across each pair of input terminals 21, 22. Any number of pairs of tracks may be provided on one support member, with the pairs slightly offset, Fig. 5 (not shown), all the short segments being connected to terminals 18, 19 and there being a corresponding number of pairs of brushes 17. The tracks may be on a disc, or around the surface of a cylinder.
Patent GB-1058657-A (GB)
Title: A control rod for a nuclear reactor
IPC: G21C7/10
Filed: 1965-07-05
Abstract: 1,058,657. Nuclear reactor control rod and irradiation devices. ATOMIC ENERGY OF CANADA Ltd. July 5, 1965 [Sept. 28, 1964], No. 28364/65. Heading G6C. A nuclear reactor control rod includes a tubular member 13 provided with exterior channels formed by rails 14 which retain wafers 15 of neutron-absorbing material. The rod is used to produce radioisotopes by irradiation of the wafers and may replace a conventional control rod in a reactor. Affixed to the member 13 are, a roller section 12 and collars 17, 18 of a head section 11. The slot 20 of rotatable sleeve 19 is aligned with the channels for insertion and removal of the wafers which arc held in position by spring units 16. The wafers may be of aluminium and contain nickel-plated cobalt pellets which are transformed into cobalt-60. Other parts of the device are made of zirconium alloy or stainless steel.
Patent GB-504539-A (GB)
Title: Arrangement of aircraft engines
IPC: B64D33/08
Filed: 1938-09-30
Abstract: 504,539. Propelling aircraft. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G., and LLOYD, J. Sept. 30, 1938, No. 28412. [Class 4] An air-cooled engine having X-like banks of in-line cylinders is disposed chordwise in the wing of an aircraft ; each cylinder bank extends across an individual duct extending from the leading edge either to the trailing-edge or to a space at the rear of the engine with an outlet at the trailing edge so that the direction of flow of the cooling air is not materially altered ; baffles guiding the cooling air round the cylinders. In one form, an aero-engine 14 is disposed within a wing 11, the upper surface of which maintains its form, the lower surface, if necessary being slightly bulged. The ducts 15 have semicircular inlets arranged (as shown). The outlets from space 18 are controlled by pivoted flaps 20. The cross-sectional area of the space 18 is arranged to be substantially constant. The engine may drive a tractor or a pusher airscrew or both. Specification 463,474 is referred to.
Patent GB-1344758-A (GB)
Title: Pressure transducers
IPC: A61B5/0215
Filed: 1972-06-19
Abstract: 1344758 Probes MILLAR INSTRUMENTS Inc 19 June 1972 [1 July 1971] 28527/72 Heading A5R [Also in Division G1] In a fluid pressure transducer, e.g. for measuring blood pressure, a piezo-resistive strain gauge member 10 comprised of two individual elements in the form of a pair of pads 20a or 20b interconnected by a reduced neck portion 22a or 22b and having their pads bonded together via insulating material, has the pad of one element fixed to a diaphragm 14 subjected to the fluid pressure and the other pad to a fixed member 12 whereby flexure of the diaphragm causes compression in one neck portion and tension in the other, conductive material being provided on the surface of each pad to form electrodes. As shown, the diaphragm comprises a rigid centre portion 16 and a flexible outer portion 18 secured in an opening in the member 12. The member 12 may form the flattened tip of a catheter such that the transducer 10 is arranged inside the catheter tip, Figs. 4-7 (not shown). The catheter tip can be used to measure blood pressure inside the body or to measure blood pressure supplied to a chamber outside the body, Fig. 11 (not shown). The difference between two pressures can be measured by dividing a compartment by a member 12 in the form of a disc, Figs. 9 and 10 (not shown). The pressure of fluid flowing in a conduit can be measured by arranging the member 12 in a cut-out portion of the conduit, Figs. 12  and 13 (not shown).
Patent GB-1431499-A (GB)
Title: Apparatus for sequentially feeding out sheet-like articles
IPC: B65H3/12
Filed: 1973-06-15
Abstract: 1431499 Feeding sheets TOKYO SHIBAURA ELECTRIC CO Ltd 15 June 1973 [15 June 1972 (5)] 28529/73 Heading B8R Sheets 2, Figs. 1A and 1B, advanced in upright position by belts 11 and 9 against a baffle spring plate 12 have their rear ends sucked against a belt 5 moving over a supplementary suction device 4 and their front ends urged by a spring 13 against a belt 22 moving between guide members 23 and over a suction device 3 having a perforated front plate, the belt 22 having perforated suction regions 26 projecting outwards from the belt body and having a higher co-efficient of friction than the belt body. The outer surface of a region 26 passing between the members 23 is flush with the outer surfaces of the members 23. When the holes 27 in a region 26 pass over the perforations in the front plate of the device 3, the front sheet is separated by suction and friction and carried through a gap between the belt 22 and projections 12a, 12b, 12c of the plate 12, the projection 12a being bent forwards, and the gap being adjustable, so as to prevent double feed. The upper member 23 has a projection 29 which slightly binds two adjacent sheets to create a gap between them. In another form, Fig. 2B (not shown), the suction regions do not project, but are formed with a lattice of grooves to increase friction. In another form, Fig. 3B, the suction regions 26b consist of three resilient rectangular members 32 each surrounding two suction holes 27, the sheet being sucked into the recesses to become slightly curved. The belt 22b is toothed on its inner side. The member 32 may be replaced by a single layer member. In another form, Fig. 4B (not shown), the suction region is in two pairs separated by a central horizontal recess accommodating a fixed lever which improves the prevention of double feed. Part of the lever opposite the plate 12 may have vertical grooves to increase friction (Fig. 5, not shown). In the forms of Figs. 2B, 3B, 4B and 5, the projection 12b of the the plate 12 is not bent forwards.
Patent GB-210137-A (GB)
Title: Improvements in machinery for cutting metal sheets
IPC: B23D31/00
Filed: 1922-10-20
Abstract: 210,137. Hebblethwaite, J. W. Oct. 20, 1922. No Patent granted (Sealing fee not paid). Shearing; shear-blades.-Sheets are sheared on their edges or at their corners by a machine having two shearing-units, one of which is stationary, the other being moved to position the sheet by the gear actuating the cutters. The machine may be operated manually or by power. The lower cutters 22, Fig. 3, may be mounted on triangular blocks 2 carried by the shearing-units 1, the right-hand one of which is fixed, the other being moved on the bed 8, Fig. 1, by a spring- retained link 16 actuated by a treadle-operated bar 9 connected to heads 3 carrying the upper cutters 21. The heads 3 carry gauge stops 24 and are lifted by springs on release of the treadle. The first part of the downward movement of the bar 9 positions the sheet resting on a table 20, between the gauges 24, further downward movement effecting the shearing operation without further displacement of the movable shearing-unit. In a modification, the upper cutters are actuated by a power crankshaft driven through a clutch which is engaged when a treadle-operated block is depressed to position the movable shearing-unit.
Patent GB-824257-A (GB)
Title: Improvements in dry shavers
Inventor: KNOWLES FREDERICK WILFRED
IPC: B26B19/12
Filed: 1955-10-07
Abstract: 824,257. Dry shavers. WILKINSON SWORD Ltd., and RANDOLPH, H. B. Jan. 7, 1957 [Oct. 7, 1955], No. 28592/55. Class 131 [Also in Group XXXV] The cutting members of a dry shaver comprise a fixed, perforated member and a<SP> </SP> curved perforated belt member connected at each end to drive member for reciprocation lengthwise in contact with the fixed member. As shown in Figs. 1 and 2 a perforated steel belt 12 is reciprocated on the outer surface of a fixed cutting member 10 mounted on a handgrip 11 and having slots 10a inclined to the axis of reciprocation. The ends of the belt are secured to an armature 15 pivoted on a spindle 16, and having pole faces 15a, 15b held by springs 18, 19 out of the mid-plane of a a yoke 13 until the poles are attracted by the passage of alternating current through energizing coils 14. In a modification, shown in Fig. 5, a fixed guard 23 with circular apertures is interposed between the skin and a perforated reciprocated belt 22 supported by a bridge 20 having large, closely-spaced apertures 20a and made of sintered graphited bronze. Cut hair escapes through the open ends of the shaver and the edges of the cutting members at one end of the shaver are castellated at 10b to provide a moustache trimmer. Mechanical driving means or a conventional electric motor can be used to reciprocate the belt member.
Patent GB-1056367-A (GB)
Title: Improvements relating to position indicators
IPC: G01D5/25
Filed: 1965-07-06
Abstract: 1,056,367. Electric selective signalling. SOC. ANON. ETABLISSEMENTS TROSSEILLE. July 6, 1965 [July 24, 1964], No. 28692/65. Heading G4H. A shaft rotation is digitized by cam switches which provide a monophylic shifting-pattern output. Further cam switches, driven via gearing, provide higher order outputs, and to remove carry errors lead and lag cams are employed.
Patent GB-976654-A (GB)
Title: Improvements in or relating to the sewing of bindings on garments
IPC: D05B35/06
Filed: 1962-07-26
Abstract: 976,654. Stitched seams, sewing machines. G. M. PFAFF A. G. July 26, 1962 [Aug. 2, 1961], No. 28703/62. Heading D1G. In a twin-needle sewing machine the edges of a strip 5 of material are folded inwardly and are then sewn to the respective edges of a garment part 38 and cover strip 31, while leaving the exposed part of the strip free from stitching. As shown, the machine is provided with a feeding foot 6, twin needles 15 carried by an oscillating bar 14, feed dogs 17 and a presser foot 18. The strip-folding guide 7, which is mounted at the rear of the needles, comprises downwardly inclined folding channels 11 attached adjustably to the feeding foot 6, and tongues 13 disposed within the members 11 and also carried, for both vertical and horizontal adjustment, by the feeding foot 6. The forward edges 13a of the tongues 13 are arranged in advance of the forward edges 11a of the members 11, and are positioned just above the work support 20 and closely adjacent the planes of the needles. Strip 5 passes to folding guide 7, where its edges are folded on top of the tongues 13, from a reel 4 and edge guide 3 mounted at the rear of the machine. Initially the work feed is made in the reverse direction A, whereby the folded edges 5a are sewn to the centre part 5c of the strip. The leading edge of the sewn strip is folded upon itself and is passed under a leaf spring 23 carried by an abutment 22 adjustably mounted on the work support 20. The machine is then stopped, the leading corners of the strip are folded over the pointed free end of spring 23, as at 35, 36, and a plate 37 is laid over the sewn strip, plate 37 being narrower than the space between the needles and extending as far as the latter via notches 17 and 19 in the feet 18 and 6 respectively. The work is then fed in the forward direction B, whereby the folded edges 5a of further strip 5 are progressively sewn to the initially sewn length of strip to form a projection 34. Plate 37 is then withdrawn. Finally, the folded-over edge of the cover strip 31 and the edge of the garment part 38 are placed upon the free end of the initially sewn strip at the stitching point, and are thus progressively sewn to the folded edges 5a of strip 5. It is stated that formation of the projection 34 may be omitted, parts 31 and 38 being sewn directly to the edges 5a. The edge of cover strip 31 is folded in a guide 26 pivotally mounted on a bar 25 carried by a bracket 24 fixed to the work support 20.
Patent GB-890388-A (GB)
Title: Improvements in or relating to flooring
Inventor: QUILIGOTTI EDWARD EMANUEL
IPC: E04F15/12
Filed: 1959-08-22
Abstract: 890,388. Tiled and monolithic floors. QUILIGOTTI & CO. Ltd., A. Aug. 22, 1960 [Aug. 22, 1959; June 15, 1960], Nos. 28774/59 and 20951/60. Addition to 790,222. Classes 20(4) and 107 To provide a crack-absorbing zone between a terrazzo flooring surface layer of tiled or monolithic construction and the concrete base, the concrete bedding layer between the surface layer and the base is integrally formed with a plurality of relatively spaced supporting columns which are self-attached to the base over an area of not more than 50% and not less than 25% of the whole area. The columns may be formed by the use of perforated paper felt or like fibrous material or a perforated plastic, e.g. polyethylene, film between the base and the bedding layer.
Patent GB-287989-A (GB)
Abstract: 287,989. Risboro' Furniture, Ltd., and Beechey, W. H. Jan. 26, 1927. Bedsteads convertible into seats.- A chair convertible into a bedstead comprises a leg section c pivoted at d to an intermediate section e which is pivoted at f to the main frame a, so that during conversion from one form to the other the parts c, e turn about their pivots in opposite directions, together with a fixed support g on the leg rest section c and a hinged support h on the section e adapted to be automatically folded, as by the slotted link j, when the device is converted into a chair. The back section b may be pivoted at k to the frame a, or, as shown in Fig. 3, may be carried by pivoted links n having pin and slot connections p, q therewith. The pivot f may be mounted to run in grooves r, Fig. 6, and in this case the back would be pivoted to the frame a and provided with a leg to support it when lowered rearwardly.
Patent GB-1176723-A (GB)
Title: Purification Process.
IPC: B01J39/04
Filed: 1967-06-22
Abstract: 1,176,723. Separating gases. MONSANTO CO. 22 June, 1967 [22 June, 1966], No. 28841/67. Heading B1L. [Also in Division C2] Gaseous streams, particularly streams which contain C 1-15 -alcohols and iron carbonyl are treated with cation exchange resins, preferably of the sulphonated type, which are partly at least in the ferric form to remove the oxidisable carbonyl impurities. Amines may also be separated from streams containing alcohols.
Patent GB-1240125-A (GB)
Title: Improvements in plasma spray apparatus
Inventor: SMITH PETER ROY
IPC: B05B7/22
Filed: 1967-12-01
Abstract: 1,240,125. Spray producers. ASSOCIATED ENG., Ltd. 29 Nov., 1968 [1 Dec., 1967], No. 28984/70. Divided out of 1,240,124. Heading B2F. A plasma spray gun comprises means for supplying tubing to the gun at a controlled rate, the tubing containing powder material which is thereby supplied to the gun at a controlled rate. The tube may be flexible, e.g. of plastics material, and may be fed directly to the plasma arc zone, or the tube 12 may be slit by blade 16 located in a stream of carrier gas in convergent-divergent passage 17 which conveys the powder to the arc. The tube may pass through sealing members 18 and may be drawn through the slitting region by rollers 19 downstream thereof, or may be pushed by rollers upstream thereof. Two or more powders may be supplied in separate tubes. (For Figure see next column)
Patent GB-220857-A (GB)
Title: Improvements in continuous rod cigarette making machines
IPC: A24C5/28
Filed: 1923-11-17
Abstract: 220,857. Universelle Cigarettenmaschinen-Fabrik J. C. M³ller & Co., and Hohn, M. Nov. 17, 1923. Cigarette-making machines. - Cutting-mechanism for a continuous-rod machine comprises a circular cutter which is adapted to be moved at the same speed as the rod while cutting and is controlled by a crank pin of variable throw. The crank pin k, Fig. 2, is mounted on a plate l slidable in a diametral channel of a crank disc n rotated by a shaft o and gearing. A pin p mounted on the other face of the slide plate carries a roller q moving in the cam groove of a stationary cam disc s. The crank pin k carries a slide block i disposed within the slot in an arm b of a bell-crank lever; the other arm carries a slide block e adjusted in a slot by a screw, and the block e carries a pin d on which the connecting-rod c, connected to the cutter carrier, is journaled. In a modification, Fig. 4, the cutter carrier is pivotally connected by an eye to the crank pin k and to a controlling arm 3 slidable in a horizontally pivoted' pin 5. A slot 12 in the carrier 8 of the cigaretterod guide 9, which is slidable on a rail 10, guides a pin 11 carried by the cutter carrier.
Patent GB-159568-A (GB)
Title: Improvements in and relating to the production of ferro-chrome alloys
IPC: C21C7/00
Filed: 1919-11-24
Abstract: 159,568. Ballantine, W. B. Nov. 24. 1919. Alloys; thermo-aluminic and like mixtures and metal-extracting processes.-Low-carbon ferrochromium is made by subjecting crude ferrochromium to the action of an oxidizing blast in a converter. A thermo-reduction mixture, preferably in the form of blocks or masses, and containing chromite or a pure chromium compound orboth, may be added to the molten alloy before or after tapping from the converter for the purpose of adjusting the chromium content. The crude ferro-chromium may be first prepared by the reduction of chromite in an electric furnace, steel scrap or the like forming part of the charge, or by a thermo-reduction process in which a cheap reducing agent such as calcium carbide is used. In some cases, mild basic steel may be added to the crude material prior to treatment in the converter. Reference has been directed by the Comptroller to Specification 145,709.
Patent GB-316475-A (GB)
Title: Improvements in automatic couplings for railway vehicles
IPC: B61G1/16
Filed: 1928-10-15
Abstract: 316,475. Kolodziej, M., and Iglauer, K. Oct. 15, 1928. Couplings, automatic; buffers. -In an automatic coupling for railway vehicles the coupling- members a, b, which are movable in a horizontal plane and under the influence of springs d, are pivoted at c to supports e controlled by pneumatic pistons g and adapted for longitudinal displacement relatively to the vehicle, each coupling-member a, b being connected by a chain m to a rigid part of the vehicle, e.g., to the buffer casing, so as to be defected for uncoupling when the support e is displaced forwardly, while the air supply to the piston cylinders n through pipes k, i is controlled by valves l arranged at the sides of the vehicle. In the construction shown the coupling-members are each formed with a hooked end x engageable automatically with an eye y on the opposed member. Preferably the buffers o are also provided with pneumatically controlled pistons t and the buffer spaces are connected by pipes u to the front spaces of the cylinders n, so that air is released simultaneously from these spaces, thus releasing the pressure between the buffer faces on opposed vehicles before uncoupling occurs. The piston g is also arranged normally to cover the end of a pipe v leading to a pneumatic brakeoperating device s, but uncovers the same during the uncoupling process, the device s being subsequently re-set, when the piston g returns to normal position, by means of a system of links and levers h, q, r.
Patent GB-775590-A (GB)
Title: Improvements in or relating to production of ethyl toluenes
IPC: C07C6/12
Filed: 1954-10-15
Abstract: Meta-ethyltoluene and 1,3,5-diethyltoluene are made by interacting toluene and ethylbenzene, di-or tri-ethylbenzene in the molar ratio of toluene to ethyl groups of at least 0.5 with at least enough liquid hydrogen fluoride to form a separate acid phase and with at least 0.5 mol. of boron trifluoride per mol. of ethyl groups under anhydrous conditions at a temperature not above 135 DEG  C., e.g. a temperature in the range - 20 DEG  to 100 DEG  C., for sufficient time, removing the hydrogen fluoride and boron trifluoride from the acid phase, and fractionating the hydrocarbon mixture which remains. A meta-ethyltoluene fraction may be obtained after interaction for 5 minutes to 2 hours at 50-10 DEG  C. of a toluene and ethylbenzene mixture with 5-20 mols. of hydrogen fluoride and at least one mol. of boron trifluoride per mol. of ethylbenzene, and meta-ethyltoluene and 1,3,5-diethyltoluene fractions may be obtained after interaction for 2 minutes to 15 hours, at 100-30 DEG  C. of these reactants.  A meta-ethyltoluene fraction may be obtained after interaction for 30 minutes to 12 hours of a toluene and diethylbenzene mixture with 5-20 mols. of hydrogen fluoride and at least 2 mols. of boron trifluoride per mol. of the alkyl benzene, and meta-ethyltoluene and 1,3,5-diethyltoluene fractions may be obtained after interaction for 5 minutes to 36 hours at 100-30 DEG  C. of these reactants.