baber/WOPTO huggingface dataset:
Patent GB-1036730-A (GB)
Title: Improvements in wire conveyor belts
Inventor: MORRIS IVOR ST LAWRENCE
IPC: B65G15/54
Filed: 1962-10-16
Abstract: 1,036,730. Endless conveyer belts. GEORGE LANE & SONS Ltd. Oct. 4, 1963 [Oct. 16, 1962], No. 39029/62. Heading B8A. An endless conveyer belt is formed from a series of wire mesh panels 4. Adjacent panels are interconnected by the provision of interconnecting wire helices 9, 10, 9, additional transverse wires 8, 8, and a transverse bar 11. The ends of the bar 11 may support a conveyer chain. In a modification (Figs. 3 and 4, not shown), the bar 11, one wire 8, and one helix 9, are dispensed with. In another modification (Figs. 1 and 2, not shown), the panels 4 are coupled directly by a single helix 9.
Patent GB-985755-A (GB)
Title: Processes for preparing graft copolymer solutions
IPC: C08F279/02
Filed: 1961-11-01
Abstract: A curable graft copolymer solution is made by reacting a liquid polymer of a C4-C6 diolefin with a cross-linking monomer containing a single ethylenic bond and a cross-linking monomer containing more than one ethylenic bond in a hydrocarbon diluent in the presence of a free-radical polymerization catalyst, the cross-linking monomers and/or the catalyst being added to the reaction mixture in at least two successive steps.  The examples describe the use of polybutadiene and a butadienestyrene copolymer as liquid polymers, styrene and vinyl toluene as mono ehtylenic monomers, divinyl benzene (containing ethyl styrene) as a polyethylenic monomer, benzoyl peroxide as a catalyst, and toluene and xylene as hydrocarbon diluents.  The products are used for impregnating glass cloth, followed by curing to produce a reinforced plastic product.  Specifications 677,774 and 907,460 are referred to.
Patent GB-1093218-A (GB)
Title: Method of and apparatus for generating a sinusoidal polyphase voltage of variable frequency
IPC: H02P27/04
Filed: 1965-09-20
Abstract: 1,093,218. Converting. J. VERMOTGAUD. Sept. 20, 1965 [Sept. 22, 1964], No. 39978/65. Heading H2F. An N-phase sinusoidal voltage of variable frequency and amplitude is generated from a single-phase sinusoidal voltage of variable amplitude and an N-phase rectangular voltage. Each phase of the polyphase voltage modulates a voltage from the sinusoidal input, and filters extract from the modulated signals the components having a frequency equal to the difference of the two input signals. The output frequency is varied by varying either input frequency, and the output amplitude depends on the amplitude of the sinusoidal input. In an embodiment the apparatus provides an output R, S, T (Fig. 4) which controls an inverter supplying an induction motor. The single-phase input 20 is fed to the parallelconnected primaries of transformers 40 in the modulators 25, 26, 27. Each phase of the threephase input 21 controls a pair of transistors 42, 43 connected to the secondary windings as shown. The inputs 20, 21 may be derived from a single oscillator through conventional frequency dividing and waveform changing circuits (Fig. 5, not shown).
Patent GB-1079987-A (GB)
Title: Stable cylindrical lens systems
IPC: G02B13/18
Filed: 1965-09-21
Abstract: 1,079,987. Cylindrical lenses. PERKINELMER CORPORATION. Sept. 21, 1965 [Sept. 21, 1964], No.40223/65. Heading G2J. A single cylindrical lens 10 has a different value of focal length f 0  for rays such as 17 in a plane 12 normal to the cylinder axes than it has f #  for rays such as 19 in a plane 14 inclined thereto and so to obtain substantially constant focal length two cylindrical lenses with parallel axes and having focal lengths f 1 , f 2 , and refractive indexes N 1 , N 2  respectively are spaced apart a distance d equal to To obtain equal back focal lengths the distance d also equals In a modification three spaced lenses are used and the relevant formulae are given in the Specification.
Patent GB-1418328-A (GB)
Title: Hydrogenation of aromatic compounds containing sulphurous impurities
IPC: C10G45/50
Filed: 1973-08-24
Abstract: 1418328 Hydrogenation catalyst system INSTITUT FRANCAIS DE PETROLE 24 Aug 1973 [1 Sept 1972] 40232/73 Heading C5E The aromatic and sulphur contents of hydrocarbons are reduced by contacting with hydrogen at 200-450 C. and 10-200 kg./cm.<SP>2</SP> abs. with a catalyst (A) comprising (a) an oxide and/or sulphide of Mo, W, Ni and/or Co, (b) alumina and (c) iron oxide and then with a catalyst (B) for the hydrogenation of aromatics and containing a metal in elemental form. The catalyst (A) has an Al 2 O 3  : Fe 2 O 3  ratio of from 0À25 to 4; the iron oxide can be incorporated in this catalyst as the "red mud", hematite, bauxite or as iron salts. A suitable catalyst (B) is Pt on alumina. The catalysts (A) and (B) can be regenerated with steam at 100-600 C. The process can be used to treat distillates boiling within the range 50-350 C. e.g. white spirit and kerosene for aviation fuels.
Patent GB-950122-A (GB)
Title: Improvements in or relating to covers for seats, settees or the like
Inventor: BOWLES WILLIAM ROBERT
IPC: A47C31/11
Filed: 1961-11-10
Abstract: 950,122. Seat covers. MINTY Ltd. Oct. 9, 1962 [Nov. 10, 1961], No. 40376/61. Heading A4M. A pouch-like cover, comprising united, flexible panels 15-19, for the arm 6 of a chair includes at the lower edge of its outer panel 15 means to draw the panel 15 against the arm 6 and further includes a rigid shaping member 30 in this lower edge. A complete chair cover comprises a first portion 9 having two such arm covers joined by a front panel 21 and a second portion 10 comprising panels 11, 12, 13 for covering the seat back, the two portions being joined by a sliding clasp fastener 20. The hemmed lower edges of the front and side panels 21, 15 incorporate rods 30, shaped as desired to conform to the seat. Fabric flaps 32 secured to these edges carry an elastic cord 34 whose ends are connected together, as at 35, which serves to draw the panels 12, 15, 21 against the back 7 and arms 6. A similar cord and flap arrangement connects the lower edges of the arm's inner panels 16 and the upper edge of the front panel 21 which carries a preferably padded, flap to be tucked beneath a cushion 37.
Patent GB-970214-A (GB)
Title: Method of purifying gaseous formaldehyde
IPC: C08G2/00
Filed: 1962-10-25
Abstract: Gaseous monomeric formaldehyde is purified by contacting with a solid alkali or alkaline-earth metal salt of an acidic ion-exchange resin at between -20 DEG C. and 180 DEG C.  Sulphonated polystyrene, polyacrylic resin, polyphenol or carboxylated polyphenols may be used as sodium, potassium, calcium or magnesium salts. The formaldehyde may be obtained by the pyrolysis of commercial paraformaldehyde, and the absorbent may be in a fixed, moving or fluidized bed and may be regenerated by heating under vacuum or stripping with an inert gas.
Patent GB-928501-A (GB)
Title: Improvements relating to coin mechanisms
IPC: G07F5/20
Filed: 1958-12-16
Abstract: 928,501. Coin-freed apparatus. S. R. SMITH. March 15, 1960 [Dec. 16, 1958], No. 40450/58. Class 27. Coin-operated mechanism comprises an operating member or shaft 1 for a computer which includes an index element 12 adapted to be driven by and to slide relatively to the operating member and to take different settings in response to its engagement by coins of different diameters, the coin being adapted to serve as an abutment during displacement of the operating member and the index element having means 3, 4, 5 operable in each of its set positions for completing a computation corresponding to the setting by displacement of the operating member. The operating shaft 1 carries a cam 7 fixed to it and an index assembly 3, 4, 5, 12 slidable on it against the action of a spring 13 by a lever 9 bearing on the index disc 12 and connected by a spring 11 to a lever 10 bearing on the cam. Rotation of the shaft acts through the cam and lever 10 to move the index assembly until the disc 12 bears on a coin 33 lying on the inturned edge of 32 a pivoted plate 31 and, according to the diameter of the coin, the slotted disc 12 is positioned opposite one of three slots 15a, 15b, 15c in a plate 14 and can pass through the slot to hold the assembly in indexed position. The largest coin allows the disc 12 to move through the slot 15c and subsequent movement of the lever 10 is absorbed by the spring 11. As the disc passes through the slot, a cam 36 on the shaft 1 tilts an arm 37 on the coin plates 31 and releases the coin. According to the position of the assembly, the four-tooth section 3, the two-tooth section 5 or the one-tooth section 4 can mesh with a gear 39 on a shaft 38 and through gearing 41 rotate a shaft 40 four, two or one divisions from zero in one direction. While the gear 39 is meshed with the section 3, 4 or 5, a control slot 152 in a. cam 110 on the shaft 40 is positioned a certain angular distance away from a lever system- LS, a pointer on the shaft 40 indicates the unused coins and other pointers driven by the shaft 39 indicate the accumulative total of the coins inserted: When the tooth section disengages the gear 39 and the slot 16 in the disc 12 moves past the slot in the plate 14, the index assembly is reset axially by the spring 13 and a cam 140 on the shaft 1 allows the lever system LS to move and close the circuit of a synchronous timing motor 42. The motor drives the shaft 40 in the other direction through a differential 44 until the control slot 152. allows the lever system LS to move so as to stop the motor 42. The control of the switching operation is described in Specification 928,502. If the shaft 1 is turned without coin insertion, the end of the slot 16 in the disc 12 strikes an unslotted portion of the plate 14 and further rotation is prevented. An over-centre spring 54 ensures that the shaft 1 is pulled back to normal position to complete one revolution and a pawl 55 prevents backward movement.
Patent GB-1243121-A (GB)
Title: Position sensing apparatus
IPC: G06K5/02
Filed: 1969-08-14
Abstract: 1, 243, 121. Sensing position electrically. NATIONAL CASH REGISTER CO. Aug. 14, 1969 [Aug. 29, 1968], No.40653/69. Heading GIN. The relative positions of two members, one of which has a coil 17 mounted thereon and the other 15 of which is "lossy", is determined by means responsive to both the change of inductance and Q of the coil due to relative movement of the two members. As shown, in a paper punch, a solenoid 18 is energized to operate the punch 11 via a "lossy" armature 15 which may be either of magnetic material or magnetic with a metallic, non-magnetic portion adjacent the coil so that a large amount of energy is absorbed from the coil due to eddy current losses and/or hysteresis losses. In one embodiment, Fig. 4 (not shown), the coil forms part of a resonant circuit and is energized at or near the resonant frequency by squarewave pulses. The resonant circuit is connected to a level detector which gives an indication when the armature reaches the extreme remote position from the coil by sensing the signal representative of the inductance and Q changes in the coil. In this manner very small displacements may be determined. The velocity and acceleration of the armature may also be determined. In an alternative, Fig. 6 (not shown), the coil is connected in an A. C. bridge circuit and is energized by a sinusoidal voltage. When the armature moves away from the coil, the bridge is driven towards balance, the inductance change in the coil producing reactive balancing and the Q change producing resistive balancing of the bridge.
Patent GB-1002533-A (GB)
Title: Automatic thermal switches
IPC: H01H61/06
Filed: 1960-11-28
Abstract: 1,002,533. Temperature-responsive actuating-elements. W. E. O'SHEI. Nov.24, 1961 [Nov. 28, 1960], 40813/60. Heading GID. [Also in Division H2] The hot wire 22 of a thermal flasher of the type described in Specification 778,211 [Group XXXVII] is secured in place and insulated by a glass bead 23, a current supplying lead 42 making contact with the hot wire substantially where it enters the glass bead so that negligible current flows in the wire within the bead. This reduces heating and consequent loosening of the bead.
Patent GB-1121769-A (GB)
Title: Improvements in or relating to packaging foodstuffs
Inventor: SCHNEIDER JOHANNES
IPC: A23C19/16
Filed: 1966-09-14
Abstract: 1,121,769. Food packages. DYNAMIT NOBEL A.G. 14 Sept., 1966 [16 Sept., 1965], No. 41154/66. Heading B8C. A biaxially stretched film of an amorphous polyamide produced by the condensation of terephthalic acid or a methyl ester thereof with a hexamethylene diamine is heat shrunk about a foodstuff such as cheese. The mono- or di-methyl ester of terephthalic acid may be used and the hexamethylene diamine may be 2,2,4- and/or 2,4,4-trimethyl hexamethylene diamine. It is stated that the amorphous polyamide film has good weldability, high resistivity to fat, good aroma sealing properties and does not influence the taste of the foodstuff. In the embodiment described, a tubular sheath of the film may be sealed, to enclose the foodstuff, by welding it in vacuum, after which the film is heat shrunk at about 170-190‹ C. Specifications 1,102,851 and 1,102,852 disclose the method of manufacture of the film.
Patent GB-1003974-A (GB)
Title: Improvements in or relating to methods of manufacturing objects of quartz glass
IPC: C03B32/00
Filed: 1962-10-31
Abstract: In the manufacture of objects of quartz glass in which quartz is melted and cooled to form the object, such quartz object is heated in a hydrogen containing atmosphere at a temperature between 400 DEG and 1000 DEG  C., whereby discoloration by irradiation with short wave ionizing radiation is reduced.  Best results are obtained by heating at 500 DEG  C.  Specification 1,003,973 is referred to.
Patent GB-997305-A (GB)
Title: Improvements in or relating to railway vehicles
Inventor: HIRST ARCHIE JOHN
IPC: B61F5/08
Filed: 1961-11-17
Abstract: 997,305. Railway vehicle undercarriages. METALASTIK Ltd. Nov. 7, 1962 [Nov. 17, 1961], No. 41321/61. Heading B7L. A pair of articulated railway vehicles are supported at their adjacent ends by a common bogie having a common vertical pivot for those ends, the pivot comprising a cylindrical housing 14, Figs. 1 and 3, on the bogie, e.g. in a bolster having flanges 10 and a web 11; a pair of part cylindrical rubber bush elements 15, 16, e.g. each having rubber part-annuli 18, 19 and a part-annular metal interleaf 20, each having associated therewith a corresponding part cylindrical inner metal part 17 all the elements 15, 16 and parts 17 being coaxial with the axis of the housing 14, the elements and metal parts respectively being arranged one on each side of the transverse plane of the bogie containing the axis of the housing with their adjacent ends spaced apart as indicated at 23; and means 28, 29, 30, 31 for radially compressing the elements 15, 16 between the parts 17 and the housing, the parts 17 being attached respectively to the adjacent ends of the vehicles. The compressing means comprise frusto-conical metal sleeves 31 and frusto-conical rubber bushes 28, 29, the sleeves having bores 30 through which is passed a bolt to draw the sleeves together. Each end of the bolster 10, 11, Fig. 2, is supported from the bogie frame by fore-and-aft rubber-metal-interleaf springs 12, and has a seat 41, 44 for a rubber-metal interleaf side bearer spring 37 connected by a bolt 49 to a foot-plate 48 having upwardly extending arms 47 supporting one railway carriage end. A saddle 51 bridging the foot-plate 48 is carried in a seat 53 in the bolster end, and supports a rubber-metal-interleaf side bearer spring 36 supporting the other adjacent railway carriage end. Instead of being one above the other at each end of the bolster, the pairs of springs 36, 37 may be side-by-side and in line with the transverse vertical plane containing the common pivot axis, with the inner two side bores supporting one carriage end and the outer two side bearers supporting the other adjacent carriage end. Specification 997,306 is referred to.
Patent GB-1445861-A (GB)
Title: Process for the manufacture of silicon mouldings
IPC: B22D21/00
Filed: 1973-09-04
Abstract: 1445861 Casting silicon WACKER-CHEMITRONIC GES FUR ELEKTRONIKGRUNDSTOFFE mbH 4 Sept 1973 [8 Sept 1972] 41439/73 Heading B5A A process for the manufacture of silicon mouldings comprises casting a silicon melt into a mould having a moulding surface consisting of one or more substances selected from graphite, sintered quartz wool, sintered quartz sand, and sintered silicon nitride, either in vacuo or under an inert gas atmosphere, the temperature of the mould being such that when the silicon melt contacts the moulding surface a solid layer of silicon immediately forms thereon. In the apparatus shown, a hollow silicon article is produced in a two part mould comprising a convex part 5 of graphite having a surface 7 of silicon nitride and a concave part 6 of graphite having a surface layer of sintered quartz wool or sand. The silicon is melted in a quartz crucible 1 before being poured into the mould via a funnel 3.
Patent GB-1116746-A (GB)
Title: A microphone arrangement having a variable directional pattern and a camera and microphone combination
IPC: H04R1/40
Filed: 1965-09-30
Abstract: 1,116,746. Microphones. AKUSTISCHE U. KINO-GERATE G.m.b.H. 30 Sept., 1965 [1 Oct., 1964], No. 41607/65. Heading H4J. In a microphone arrangement having an adjustable angle of acceptance, at least two individual microphones 13, 14 (Fig. 7) are arranged adjacent to one another and the microphones are connected to the input of a common amplifier through a control 10 for varying the ratio of the output voltages of the microphones 13, 14 to vary the angle of acceptance of the arrangement. One of the microphones 13 has a unidirectional response pattern in the form of a slender lobe and the other microphone 14 has a response pattern defining an angular field which is larger than, and includes, the angular field defined by the response pattern of the microphone 13. The microphone 14 may have an omnidirectional response pattern, a unidirectional response pattern or may be switched between an omnidirectional pattern and a unidirectional one. The arrangement may be linked with the zoom lens of a television or sound motion picture camera, or with a lens turret. The control 9 for a zoom lens 8 may be coupled with the mixing control 10 by a flexible shaft, gearing or other mechanism for transmitting rotary or translatory movement. Microphone 13 is highly directional and is made up of one or more directional tubes 15 in front of the diaphragm of a pressure or pressure gradient type transducer. Microphone 14 has a cardioid response and comprises a pressure gradient transducer, preferably of electrodynamic or electrostatic type. The maximum output voltage ratios are pre-set by controls 11, 12. The microphones 13, 14 are on a boom or stand separate from the camera and an operator adjusts the microphone direction in accordance with a picture monitor. Alternatively (Fig. 8, not shown), the microphone arrangement is carried on the camera by vibration-damping mountings. The controls 10, 11, 12 may be separate from the camera and mounted on a picture monitor housing (Fig. 9, not shown). A television camera (7), Fig. 10 (not shown), has its zoom lens control (9) combined with a mixing control (20). The housing of the control (20) is provided with a distance scale with which a mark on the control (9) is associated. If a lens turret is used step switches serve for changing the ratio of the outputs of the two microphones. Local circuit.-A directional capacitor microphone comprises a tube 15 (Fig. 11), a diaphragm 21 and a perforated electrode 22, and a pressure gradient capacitor microphone comprises a diaphragm 23 and a perforated electrode 24. The outputs of the microphones are applied to an amplifier 26 by a voltage divider 25.
Patent GB-851211-A (GB)
Title: Core binder
IPC: B22C1/26
Filed: 1958-12-24
Abstract: A foundry-core binder comprises a mixture of substantially amylose-free gelatinised amylopectin and an alkali-metal orthphosphatemodified starch prepared by impregnating ungelatinised-starch with an aqueous alkalimetal orthophosphate-solution having a pH between about 4 and about 7, drying the impregnated-starch to a moisture-content less than about 15%, and heating the dried starch at a temperature between about 150-175 DEG C. for a period of about 1-5 hours.  Specifications 812,339 and 812,363 are referred to.
Patent GB-1062836-A (GB)
Title: Improvements in or relating to telecommunication exchange apparatus
Inventor: BRYAN DAVID GERALD
IPC: H04Q3/00
Filed: 1965-10-01
Abstract: 1,062,836. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. Oct. 1, 1965, No. 41738/65. Heading H4K. An allotter comprises two or more counters which normally operate alternately or successively but in the event that none or more than one of the outlets of the counter in current use are marked, an alarm is initiated, the current counter is taken out of service and the other or next is made operative. Each counter comprises a number of series-coupled bi-stable circuits which are set at intervals of 150 milliseconds if the equipments to which they correspond are idle but at the much faster stepping rate of every 12 microseconds if their associated equipments are busy. When a counter reaches its last stage, logic circuitry causes the other or the next counter to start " scanning " the equipments. A number of components in the logic circuitry are duplicated and an alarm is given if these components do not operate synchronously. However, since the components work on a majority decision basis, the alternate or successive switching of the counters is unaffected by such a fault.
Patent GB-1068058-A (GB)
Title: Process for the manufacture of í¸-16ª-methylsteroids and new í¸-16ª-methylsteroids
IPC: C07J5/00
Filed: 1964-10-13
Abstract: The invention comprises 16a  - methyl - 6a -fluoro - 9a  - chloro - D 1,4 - pregnadiene - 11b ,21-diol - 3,20 - dione, the 21 - acetate, -caproate, -butylacetate and trimethyl acetate thereof, 16a -methyl-9a -chloro-D 1 4-pregnadiene-11b ,21-diol-3,20 -dione and the 21-acetate thereof and a process for the manufacture of D 1,4-16a -methyl steroids of the general formula <FORM:1068058/C2/1> in which R1 is H or acyl and R2 is H or halogen wherein a compound of the formula <FORM:1068058/C2/2> is subjected to reaction at the 9(11)-double bond whereby the 9a  - chloro - 11b  - hydroxyl grouping is introduced, e.g. by treatment with N-chloro-succinimide and perchloric acid.
Patent GB-862622-A (GB)
Title: Improvements in and relating to glands for armoured cables
IPC: H02G3/06
Filed: 1958-12-27
Abstract: 862,622. Mechanical couplings for cable or wire armouring or covering. DAVIS & SON DERBY Ltd., J., and DAVIS, W. B. Sept. 4, 1959 [Dec. 27, 1958], No. 41784/58. Class 38 (J). Twisted groups 13 of the armouring wires of a cable are passed through radial slots 20a in a sleeve 20 and are clamped against a shoulder 21 on the sleeve 20 by a collar 22. A rubber washer 23, slidably mounted on the cable between two, brass washers 24, is compressed within the collar 22 by a nut 25 to grip the insulating sheath 14.
Patent GB-1465122-A (GB)
Title: Surgical gown
IPC: A41D13/12
Filed: 1974-09-26
Abstract: 1465122 Surgical gown JOHNSON & JOHNSON 26 Sept 1974 [27 Sept 1973] 41924/74 Heading A3V In a surgical gown the central operative field 52, which may be part only of the front, comprises an outer absorbent layer 58 backed by a liquid impervious surface 58b. The absorbent layer may be a non-woven fabric, polyurethane foam or absorbent tissue. It may be laminated, spot-bonded, or edge-sealed to a plastics sheet. The arms or forearms of the gown may be provided with an inner absorbent layer.