baber/WOPTO huggingface dataset:
Patent GB-1525384-A (GB)
Title: Electric stepper motors
IPC: H02K37/00
Filed: 1974-09-25
Abstract: 1525384 Stepper motors NATIONAL RESEARCH DEVELOPMENT CORP 18 Sept 1975 [25 Sept 1974] 41713/74 Heading H2J A stepper motor has each of its drive coils A-D connected in series with impedances Z1, Z2 and switching means T1, T2 so that the impedance connected in series with each winding is changed during each drive current pulse between initial and final parts of such drive current pulse duration. During the initial part, T1 is on and T2 is off whereas during the final period T2 is on and T1 is off. The impedances may be resistive, inductive or capacitive or a combination thereof and may be of positive or negative value. The total resistance R2 of a drive coil and impedance Z2 is chosen to be in the range where # n  is the natural frequency of rotor 1 and load and L is the inductance of the coil and the impedance Z2.
Patent GB-1435776-A (GB)
Title: Reactive xanthenium dyestuffs
IPC: C09B62/44
Filed: 1973-09-06
Abstract: 1435776 Reactive xanthene dyestuffs IMPERIAL CHEMICAL INDUSTRIES Ltd 26 July 1974 [6 Sept 1973] 41889/73 Heading C4P Reactive xanthene dyestuffs have the formula in which R<SP>1</SP> is H, benzyl, sulphobenzyl or an alkyl group of 1-4 carbon atoms which may be substituted by OH, CN, OSO 3 H, CO 2 H, halogen, SO 3 H or NHQ, Q representing a heterocyclic cellulose-reactive group, R<SP>2</SP> is H, or an alkyl group of 1-4 carbon atoms which may be substituted by OH, CN, OSO 3 H, CO 2 H, halogen or SO 3 H, or NR<SP>1</SP>R<SP>2</SP> is the N-linked radical of a nitrogen-containing heterocyclic compound containing 5 or 6 atoms in the heterocyclic ring, R<SP>3</SP> is H or an alkyl group of 1-4 carbon atoms which may be substituted by OH, R<SP>4</SP> is benzyl which may be substituted by SO 3 H or NHQ, an alkyl group of 1 to 4 carbon atoms which may be substituted by OH, SO 3 H or NHQ or a phenyl radical which may be substituted by SO 3 H, CO 2 H, halogen, alkyl or alkoxy of 1 to 4 carbon atoms or NHQ, and the benzene ring A may be further substituted by an alkyl or alkoxy group of 1-4 carbon atoms, halogen, NO 2  or NHQ, and wherein NR<SP>1</SP>R<SP>2</SP> and NR<SP>3</SP>R<SP>4</SP> are different and the dyestuff as a whole contains 1 or 2 heterocyclic cellulose-reactive groups and at least one further SO 3 H group. The dyes may include two xanthilium nuclei as well as a wide range of cellulose-reactive groups containing an unsaturated linkage or a substituent capable of reacting with the OH groups of the cellulose molecule in the presence of alkali and attaching the dyestuff molecule by a covalent linkage. The dyes give reddish to violet shades with, e.g. wool, nylon, but especially natural or artificial cellulose materials such as cotton, linen and viscose rayon.
Patent GB-1272588-A (GB)
Title: Improvements in or relating to vehicle retention barriers
Inventor: CAMPBELL ROBERT EDWARD
IPC: E01F15/04
Filed: 1968-09-04
Abstract: 1,272,588. Crash barriers. BRITISH ROPES Ltd. 22 Oct., 1969 [4 Sept., 1968], No. 42080/ 68. Heading E1G. A semi-rigid crash barrier rail which flexes progressively on impact comprises at least one hollow metallic or non-metallic element 1 reinforced by a non-bonded single or multiple metallic or non-metallic strand 2. The rail may have a plane or corrugated face and as shown comprises a pair of identical elements 1 interfitted and secured together by rivets 8. The rail may be supported on posts, Fig. 9, and slit at 11, 12 to allow deflection to a ground anchorage. Each element 1 has a central bore, a fin 5 and spreadable flaps 6, 7, and may be of aluminium, rubber, or plastics with or without metallic fillers, and abrasive coatings or fluorescent pigments. The strand 2 comprises a cable of parallel or helically-wound metallic and/or plastics strands. In modifications (a) the flaps are of different lengths and provided with interlocking materials; (b) the rectangular fin is replaced by triangular or rounded formations; (c) the rivets 8 are replaced by adhesive or welding.
Patent GB-1056778-A (GB)
Title: Shaft positioning means
IPC: F16B21/18
Filed: 1965-10-05
Abstract: 1,056,778. Latches. MALLORY BATTERIES Ltd. Oct. 5, 1965 [Oct. 28, 1964], No. 42143/65. Heading E2A. Means for indexing a rotatable and axially movable shaft 12 in a support 11, the shaft having first and second grooves 15, 14, comprises at least one spring loaded member mounted on the support and adapted to engage either one of the grooves to locate the shaft in a first or second axial position, the member normally engaging the first groove 15 to locate the shaft in a first axial position, and disengaging means 22 adapted to be removed by the shaft 12 to disengage the spring loaded member or members from the first groove during a first part of the rotation of the shaft, thereby storing energy in the member or members and to cause axial movement of the shaft during a second part of the rotation of the shaft, thereby aligning the second groove 14 with the member or members, the disengaging means then becoming free of the shaft and being returned to its initial position by virtue of the release of the stored energy of the member or members thereby allowing the latter to engage the second groove 14. As shown, in which the invention is applied to a control timer (not shown) and in which the shaft 12 is coupled to switch operating cams 13, a pair of spring members is used constituted by the free ends 19, 20 of a "hairpin" spring, the arrangement being such that when the shaft 12 is rotated, a pin 21 on the shaft rides up a ramp 23 on the means 22, which is in the form of a plate slidable in an arcuate slot in the support 11, to move the plate in the direction of arrow 27 thereby lifting the ends 19, 20 of the spring from the groove 15 until a flange 28 abuts the support. Continued rotation of the shaft 12 then moves the latter axially in the direction of arrow 29, Fig. 4 (not shown) until the pin 21 rides over the flange 28 whereafter the spring displaces the plate back to its original position, when the spring ends are then free to close on to the groove 14 in which position the shaft is in a position axially which corresponds to the "off position" of the timer.
Patent GB-962613-A (GB)
Title: Process for isolating hydrocyanic acid or mixtures of hydrocyanic acid with nitriles from gas mixtures containing ammonia
IPC: C01C3/04
Filed: 1962-11-08
Abstract: Hydrogen cyanide is removed from ammonia gas by washing with a liquid nitrile, e.g. b ,b 1-dicyanodiethylether, or b -methoxy-, b -ethoxy-, b  - n - propoxy-, b  - i - propoxy-, b  - n - butoxy-, b  - i - butoxy-, b  - pentoxy-, b  - cyclopentoxy-, b  - cyclopentoxy-, b  - cyclohexoxy-, or b -benzoxypropionitrile.  The ammonia gas may also contain propylene or isobutylene; air or oxygen; and a volatile nitrile, e.g. acrylo-, methacrylo-, propio-, or aceto-nitrile.  Any cyanide.  Ammonia may be recovered from the washed gas by further washing, e.g. with water.  In one embodiment (Fig. 1, not shown) for a gas containing a mol. ratio of HCN/nitrile of less than 3/7 , the gas is passed upwards through a first tower in countercurrent with a recycled washing liquid which is then passed to the centre portion of a second tower in which absorbed ammonia is removed by blowing with an inert gas and desorbed hydrogen cyanide and nitriles are re-absorbed in further recycled washing liquid. The absorbed hydrogen cyanide and nitriles are then distilled off in a third tower and the solvent recycled to the top of the first and second towers.  In a modification (Fig. 2, not shown) for a gas containing a mol. ratio of HCN/nitrile of more than 3/7 , the liquid being distilled in the third tower is blown with inert gas, the gas evolved is washed with 1-2N aqueous sulphuric acid in a fourth tower to remove ammonia, hydrogen cyanide and nitriles are distilled off from the sulphuric acid in a fifth tower and the acid is recycled to the fourth tower. The residence time in each of the first and second towers may be 2-30 minutes. The first and second towers may be combined. The inert gas injected into the second and third towers may be nitrogen, carbon dioxide, propylene, or air.  The distillation in the third tower may be effected at atmospheric or sub-atmospheric pressure. Specification 928,777 is referred to.
Patent GB-1086979-A (GB)
Title: A surgical ligating device
IPC: A61B17/12
Filed: 1966-09-22
Abstract: 1,086,979. Ligature devices. AMP Inc. Sept. 22, 1966 [Oct. 8, 1965], No. 42301/66. Heading ASR. A device used to ligate a blood vessel comprises a disc-shaped member 1, through holes or slots in which is threaded a ligature 5, arranged to provide a noose 8 to be held tight about the blood vessel by a loop 7 of the ligature and by a enlarged or knotted end 6. In embodiments, the ligature is threaded through the disc-shaped member in various ways and, as illustrated in Figures 5 and 6 (not shown), the noose is held between the member and a bar (22) fitted in a groove in the member. The ligature is of catgut, cotton, silk, or nylon, and the member 1, which is about 1 or 2mm. in diameter, is of nylon, stainless steel, or of a gelatin absorbable in the body.. The surface of the member 1 may be roughened.
Patent GB-944071-A (GB)
Title: Swivel joints for interconnecting mechanical components
IPC: F16D3/20
Filed: 1961-11-28
Abstract: 944,071. Universal joints. BURMAN & SONS Ltd., and W. H. BRIGGS. Oct. 31, 1962 [Nov. 28, 1961], No. 42441/61. Heading F2U. A universal joint comprises a ball 13 and cylindrical socket 10 formed on or secured to shafts 12 and 11 respectively and pivotally and drivingly connected by a spherically ended bolt 15 screwed radially into the socket 10 to engage, with its spherical end 16, a recess 17 in the ball 13. The spherical end 16 may be formed directly on the bolt 15 or, in Fig. 2 (not shown), may be a ball mounted in a recessed end of the bolt. In Fig. 3 (not shown), the joint is incorporated in a motor vehicle steering column, the spherically ended bolt engaging an axial slot in the ball ended shaft which is spring loaded against the bolt such that relative axial movement, between the ball and socket joint parts against the spring thrust, permits collapse of the steering column in a collision.
Patent GB-1436740-A (GB)
Title: Semi-automated surveying apparatus
IPC: G01C15/00
Filed: 1973-09-11
Abstract: 1436740 Ground profile measurement apparatus DEFENCE SECRETARY OF STATE FOR 5 Sept 1974 [11 Sept 1973] 42655/73 Heading G1A Ground profile measuring apparatus comprises a light source producing a collimated, horizontal beam, a ground follower on which is mounted a target comprising a series of equally spaced, vertically disposed areas, photo-detectors, each receiving light from a separate target area and a recorder for indicating which detector is illuminated and the distance the ground follower has travelled from a datum. The source may be a laser with a mechanically oscillated mirror producing a horizontal scan and the ground follower may be a wheel, mounted for relative vertical movement to the back of a vehicle. The detectors may be connected to the target areas by light guides. The photo-detector outputs (1 when illuminated) are fed in parallel into shift register 21. Pulses from clock 22 are fed as shift pulses to register 21 and are counted by counter 23. Circuit 24 produces an output on a 0 to 1 transition and logic circuitry 25 then passes the contents of counter 23 to store 26 thence via D/A converter 27 to recorder 28 where it is recorded against ground follower displacement. If the count in 23 reaches the number of stages in the shift register 21, a failed signal is produced. The above circuit indicates the lowest illuminated photo-detector. When several detectors are illuminated, the mean can be determined by a circuitry modification which feeds half the clock pulses to counter 23 between the 0 to 1 and the 1 to 0 transitions in the shift register output.
Patent GB-1379425-A (GB)
Title: Bearing service tool
IPC: B25B27/06
Filed: 1972-09-18
Abstract: 1379425 Tool for removing/installing bearing sleeves CATERPILLAR TRACTOR CO 18 Sept 1972 [29 Sept 1971] 43164/72 Headings B4W and B4C [Also in Division F2] A bearing service tool 10 for removing and installing a sleeve type half bearing 21 disposed between a crank-shaft 25 and a bearing seat 18 comprises a rod member 30 and a plate member 40 of thickness less than that of the half bearing and pivotably mounted on one end of the rod member, the rod member being adapted to be inserted into an oil passage 28 in the crank-shaft and the plate member being adapted to abut one end of the half bearing and upon suitable rotation of the crank-shaft to drive said half-bearing. from its normal bearing position.
Patent GB-1405785-A (GB)
Title: Method and composition for disinfection or sterilization
IPC: C11D3/48
Filed: 1972-09-18
Abstract: 1405785 Compositions containing glutaraldehyde WAVE ENERGY SYSTEMS INC 18 Sept 1972 43173/72 Heading A5E A bactericidal, viricidal or sporicidal aqueous composition comprises from 0.1% to 5% by weight of glutaraldehyde and from 0.01 % to 1% by weight of a non-ionic surface active ethoxylate of an isomeric linear alcohol whose chain contains from 11 to 15 carbon atoms. The compositions may be used in combination with sonic or ultrasonic irradiation.
Patent GB-1093755-A (GB)
Title: Improvements in or relating to hermetic seals
IPC: C04B37/00
Filed: 1965-10-12
Abstract: 1,093,755. Metal-glass-ceramic seals. NIPPON ELECTRIC CO. Ltd. Oct. 12, 1965 [Oct. 12, 1964], No. 43261/65. Heading B3V. A hermetically sealed container is formed by glazing a ceramic cylinder 1 with a low melting point glass 2, cooling to room temperature, and heating the assembly to 370C to seal metal discs 3 to the ends of the cylinder. The expansion characteristic curves (Fig. 2, not shown) of the glass, of a steatite ceramic, and of a 52% Ni, 48% Fe alloy, intersect each other within the annealing temperature range of the glass. Free silica is added to the Mg0-SiO 2  steatite ceramic to obtain a suitable transformation point in its curve.
Patent GB-1379081-A (GB)
Title: Process for the reduction of titanium-containing iron ore
IPC: C22B1/24
Filed: 1972-09-20
Abstract: 1379081 Reducing iron ore SAKAI KAGAKU KOGYO K K 20 Sept 1972 [20 Sept 1971 21 Jan 1972] 43486/72 Heading C7D Ti-containing iron ore, e.g. ilmenite, is reduced by forming the ore into briquettes with a fine carbonaceous reducing agent, e.g petroleum coke, and at least one type of pitch, e.g. petroleum pitch, coal pitch, black liquor, heavy oil, resinous tar, asphalt pitch; pre-heating the briquettes in reducing or inert gas to remove volatiles, and finally reducing in an externally-heated shaft furnace. In Fig. 2, the briquettes are externally heated in chambers 3 by the furnace 23, directly heated at a higher temperature by hot gas, e.g. N2, CO, H2 through ports 24, and reduced in the externally heated reducing chamber 9. In a modification Fig. 1 (not shown) the ports 24 are absent and the furnace 25 and furnace 23 are combined in a dual-zone furnace (6).
Patent GB-947852-A (GB)
Title: Improvements relating to the heat and electrolytic treatment of metals
IPC: H01G9/00
Filed: 1962-11-22
Abstract: A continuous length of metal such as strip or wire is subjected in succession to annealing by electrical resistance heating and then to electrolytic treatment such as etching or pickling in a bath, the annealing being effected with a controlled proportion of the current flowing through the bath. As shown, aluminium foil 1 for electrolytic capacitors, unrolled from a supply roll 2, is passed over rollers 3 and 4, e.g. of copper or brass and acting as electrical <PICT:0947852/C3/1> contact points defining between them an annealing zone 5, into an etching bath 6 containing an electrode 7. The whole of the current supplied by the source 8 is used for the etching, and a part or the whole of the current flowing through the foil in the etching bath can be used for the annealing either by allowing a part of the current to flow through a variable resistance 9 connected in parallel with the annealing zone 5 or by disconnecting the resistance 9 respectively.  For example the aluminium foil may be annealed at 350-450  DEG C. and etched in an aqueous solution of 10% NaCl and 3% HCl at 70-80  DEG C. using a total current of 220 amps. The roller 4 may be arranged at the bath surface and separated from the liquid by an electrically insulating screen 10, e.g. of synthetic resin.  The bath may be cooled if necessary and the annealing zone 5 may be surrounded by a screening tunnel through which an inert gas passes.
Patent GB-1332226-A (GB)
Title: Tubular shielding gas nozzle
IPC: B23K9/29
Filed: 1971-09-22
Abstract: 1332226 Welding by fusion PFIZER Inc and AIR PRODUCTS & CHEMICALS Inc 22 Sept 1971 [8 Jan 1971] 44284/71 Heading B3R [Also in Division H5] In a gas-shielded consumable or non-consumable electrode arc-welding torch, a tubular shielding-gas nozzle surrounding the electrode consists of, or is lined with, a cylindrical or conical tubular insert of, pyrolytic graphite having its a-b planes concentric with the nozzle axis whereby build-up of weld spatter in said nozzle is reduced and removal of said spatter is facilitated.  As shown, a nozzle 30, e.g. of copper, is removably screw-threaded into a heat-sink nose 24 of a consumable wire electrode torch. A pyrolytic graphite insert 36 is secured in the nozzle by clamping, swaging, staking, brazing, cementing or press and shrink fitting. An electrode contact tube 52 concentrically disposed within the nozzle may consist of pyrolytic graphite or metal, e.g. copper, sheathed or coated with pyrolytic graphite.  In Fig. 3 (not shown), the nozzle insert is press-fitted into a counterbore of a nozzle having a flange by which it is secured by a collet chuck to the torch nose. The torches may be for TIG, MIG or CO 2  shielded welding. Gases referred to are CO 2 , He, A and mixtures thereof. An insert 36 may be produced by depositing a pyrolytic graphite tube on a polycrystalline graphite rod in a vacuum furnace, deposition conditions being 6 l./min. natural gas, 6 l./min. hydrogen, 2100‹ C., 13 mm. Hg abs. The rod is then removed and the tube machined and cut into lengths.
Patent GB-1454187-A (GB)
Title: Hermetically sealed injection semiconductor laser device
IPC: H01L23/04
Filed: 1974-10-14
Abstract: 1454187 Lasers NIPPON ELECTRIC CO Ltd 14 Oct 1974 [21 Nov 1973] 44446/74 Heading H1C In a semi-conductor laser device comprising a semi-conductor laser crystal pellet 1 having two terminals and mounted inside a tubular insulating body 7, the body has an electrically conductive cap 3, 9 hermetically sealed to each of its ends, a first cap having a stud 5 which supports the pellet and provides thermal and electrical contact to one of the terminals, and the other cap being electrically connected to the other terminal by a flexible lead 10.
Patent GB-947537-A (GB)
Title: Improvements in or relating to road vehicles
Inventor: STABLEFORD CHARLES HENRY
IPC: B60P1/28
Filed: 1961-12-13
Abstract: 947,537. Vehicle side-gates. WELFORD ENGINEERING (OLDBURY) Ltd. Dec. 5, 1962 [Dec. 13, 1961], No. 44588/61. Heading B7B. A side-gate has an inner panel 16 stiffened at its lower edge by a channel 15a provided with apertured webs 19 carrying bolts 18 which form the upper pivots for links 17 hinged at 21 to the platform 11. The bolts 21 are carried by webs 22 in the channel 20 surrounding the platform.
Patent GB-973167-A (GB)
Title: A golf practice machine
Inventor: BURGESS ERIC ROWLAND FRANK
IPC: A63B69/00
Filed: 1961-12-13
Abstract: 973,167. Golf-practicing machines. E.K.C. MANUFACTURING CO. Ltd. Dec. 12, 1962 [Dec. 13, 1961], No. 44623/61. Heading A6D. [Also in Divisions G1 and G4] A golf-practicing machine comprises a ball mounted on a support which is pivotable about a horizontal axis, and resilient means lying in the path of the ball, the mounting of the resilient means being coupled to an indicator, which latter gives an indication of the distance the ball would have travelled if free. The ball 15 is mounted on a bell-crank lever pivoted at 12 to a supporting bracket 11 and urged towards its upright position by a leaf-spring 20. When the ball is struck, it moves to abut against a plate 23 cushioned between layers of resilient material within a framework 22, the plate being mounted at one end of a pivoted lever 24 whose other end is coupled to a rack 35 which cooperates with a pinion mounted on the pivot of the pointer 39 of an indicator supported on framework 30. The ball is held in contact with the device 22, 23, against the action of leafspring 20, by a spring-loaded pawl mechanism 17. A coin-freed lever system 46, 49, 51, 52, 53 is provided for releasing the pawl mechanism 17 and allowing the ball to return to the position illustrated in Fig. 1, the lever 46 of the system simultaneously operating a pawl-and-ratchet release mechanism (not shown) for the pointer 39, thereby allowing the latter to fall to zero As shown in Fig. 10, the ball 15 is arranged to project through a slot 14 in a housing 57 for the machine, whilst a housing 58 is provided for the indicator and coin-freed mechanism. A retractable safety net may be provided in the housing 57 as a precaution against the ball's breaking free from its support, and the arm 14 may be adjustable in length. Moreover, the arm 14 may be hinged to allow movement of the ball in response to cutting or slicing strokes, in which case electrical contacts arranged to be contacted by the arm and coupled to lamps may be used to indicate the degree of cut or slice. Reference is made in the Provisional Specification to the possibility of coupling the shaft 12 to the indicator pointer.
Patent GB-1487298-A (GB)
Title: Signal transmission device
IPC: H04B3/36
Filed: 1975-10-29
Abstract: 1487298 Wired broadcasting PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 Oct 1975 [7 Nov 1974] 44623/75 Heading H4R In a signal transmission device which has a higher frequency transmission path and a lower frequency A.C. transmission path which are connected together at their inputs and/or outputs, and in which the lower frequency transmission path contains an inductance to block higher frequency signals, the inductance comprises a coil 20 which has a plurality of parts 21, 23 which are interconnected and positioned on a core 26, which is not closed about the coil, in such a manner that the magnetic fields 24, 25, produced by the parts of the coil will oppose each other to a greater degree if there is a lower frequency current in the coil than if there is a higher frequency current in the coil. In a repeater amplifier for a CATV system Fig. 1 the coils 6 and 7 of the type shown in Fig. 1A provide a bypass for 50 Hz power supply current around the HF repeater amplifier 4 to which power is provided via a rectifier unit 5. In an alternative arrangement Fig. 2 (not shown) lower frequency paths are provided from a common input to each of the outputs of a signal splitter device. The arrangement prevents saturation of the core at low frequencies and consequent intermodulation distortion.
Patent GB-1141354-A (GB)
Title: Stabilisers for polymers
Inventor: BRIGGS PETER JAMES
IPC: C07F15/06
Filed: 1965-10-21
Abstract: 1,141,354. Phenolic ketoxime chelates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 Oct., 1966 [21 Oct., 1965], No. 44655/65. Heading C2C. [Also in Division C3] Chelate complexes of nickel with aromatic syn-ketoximes derived from a ketone Ar.CO.Y, where Ar is an orthohydroxyphenyl group substituted by one or more hydrocarbon or alkoxy groups or halogen atoms and Y is an optionally substituted hydrocarbon group, may be prepared by reacting the ketoxime or sodium salt thereof with a salt of the metal, e.g. an acetate, chloride, sulphate or nitrate, preferably in a solvent such as water or ethanol. Examples describe the preparation of (1) nickel bis - (syn - methyl 2 - hydroxy - 4 - methylphenyl ketoxime) from the oxime and nickel acetate in ethanol, or from the sodium salt of the oxime and nickel sulphate in water.