baber/WOPTO huggingface dataset:
Patent GB-850284-A (GB)
Title: Improvements in or relating to methods of detaching material by electro erosion
IPC: B23H9/00
Filed: 1956-12-28
Abstract: 850,284. Cutting by electro-erosion. AGIE AKTIENGESELLSCHAFT FUR INDUSTRIELLE ELEKTRONIK. Dec. 28, 1956 [Dec. 30, 1955], No. 39519/56. Class 83 (4). A recess is formed in a metal body by electroerosion using an electrode 10 of smaller crosssection than the maximum cross-section of the recess and having a movement relatively to the workpiece which at some stage deviates from a rectilinear feed movement. In one embodiment, Figs. 1, 2, a tortuous recess is formed by moving the electrode 10 axially then rotating it through 180 degrees about its eccentric shaft 11 and continuing the axial movement. Similar embodiments are described, Figs. 3-6 (not shown), using electrodes with concentric heads and having axial and transverse movements performed in steps. Annular grooves are formed by passing an electrode 51, Fig. 7, axially through the workpiece and then moving the electrode circumferentially and preferably also rotating it. A similar embodiment is described for forming a conical groove, Fig. 8 (not shown). The erosion is preferably spark-erosion but references are made to detaching metal by ions or electrons. The electrode may be moved manually or automatically and controlled by mechanical, electrical, electronic, electromagnetic, hydraulic or pneumatic means to provide a predetermined feed-rate or maintain an optimum spark gap. The workpiece may be moved instead of the electrode.
Patent GB-1351675-A (GB)
Title: Treatment of catalysts
IPC: B01J29/064
Filed: 1971-08-25
Abstract: 1351675 Catalyst re-activation UNION CARBIDE CORP 25 Aug 1971 [26 Aug 1970] 39802/71 Heading B1E A catalyst composition comprising a crystalline zeolite and Group VIII noble metal oxide is activated or re-activated by (i) contacting at below 200C with H 2 S, water and NH 3  to convert at least part of the Gp. VIII metal oxide sequentially to its sulphide, 'hydroxide and metal-ammine complex, (ii) calcining in an oxiding atmosphere to decompose the ammine complex, and (iii) reducing to form elemental noble metal. In the Example an 85 equivalent percent ammonium exchanged sodium zeolite Y having a SiO 2 /Al 2 O 3  molar ratio of 4.8 was exchanged with 40 equivalent percent of magnesium cations then loaded with 0.5 wt % Pd by ion exchange. The zeolite was mixed with alumina and fired at 520C. The catalyst produced when deactivated by hydrocracking was regenerated by (a) decarbonizing, (b) contacting with H 2 S at 200F, (c) contacting with water vapour at 100F or 350F, (d) contacting with ammonia at 100F, (e) calcining in air at 520C and (f) reducing in situ.
Patent GB-1530889-A (GB)
Title: Large rolling bearings
IPC: F16C33/61
Filed: 1977-09-23
Abstract: 1530889 Bearings HOESCH WERKE AG 23 Sept 1977 [21 Oct 1976] 39829/77 Heading F2A A large rolling bearing designed to take up axial, radial and tilting forces comprises two bearing rings 11, 13 each composed of a plurality of segments, the segments of one ring 13 being T-shaped in cross-section in the region of the rolling tracks, and the segments of the other ring 11 being U-shaped in cross-section and partially encircling the cross-bar of the T- shaped segments, there being retaining ring segments 12 releasably connected to the ends of the arms of the U-shaped segments, and the raceways being formed by wires 18 set into the bearing ring segments and bridging the junctions between segments.
Patent GB-826092-A (GB)
Title: Improvements in the vulcanization of butyl rubber
Inventor: VIOHL PAUL
IPC: C08L23/28
Filed: 1957-12-23
Abstract: 2,21 - Methylene - bis - (4 - chloro - 6 - methylolphenol) is prepared by heating an aqueous mixture of sodium hydroxide, 2,21-methylenebis-(4-chlorophenol) and formalin, precipitating and separating as a sodium salt, and acidifying with dilute acetic acid to yield a product with a M.P. of 138-140 DEG  C. with decomposition. It is used as a vulcanizing agent for butyl rubber.ALSO:Butyl rubber is vulcanized by heating in admixture with from 0.25 to 15 parts of 2,21-methylene-bis (4-chloro-6-methylolphenol) for from 2 minutes to eight hours. Copolymers of isobutylene and 2-methyl-2-butene with isoprene, butadiene, piperylene, 2,3-dimethylbutadiene, 3 - methyl - 1,3 - pentadiene, 2-methyl - 1,3 - pentadiene, 1,3 - hexadiene and 2,4-hexadiene are mentioned and they may be polymerized in the presence of allyl or methallyl chloride or be halogenated. Strong elastic resilient bodies suitable for curing bags, steam hose, conveyer belts, tyres, fuel cells and protective clothing are obtained.
Patent GB-1058444-A (GB)
Title: Method of plating metal surfaces with gold
Inventor: LEVY JOSEPH PEPPO
IPC: C23C18/54
Filed: 1962-10-23
Abstract: A metal substrate is plated with gold without application of an external voltage by contacting it with a counter-electrode of Co, Ni or Pb while immersed in a solution of a gold salt, the counter electrode metal being more electropositive than both the salt solution and the metal substrate the process being referred to as "galvanic plating". Typically the substrate metal is copper and the counter electrode is of cobalt or nickel and comprises small separate areas of metal fixed in or on the substrate.  As described a printed circuit board comprising copper conductor strips on an insulating panel is covered with a photo-resist which is exposed except at the sites for the counter electrodes and wash-off developed to uncover the copper in these areas.  The board is then given an acid PdCl2 solution treatment followed by successive electroless platings with Ni and Co, the latter serving as the counter electrode for "galvanic" deposition of gold on the copper strips after removal of the photo-resist with a solvent such as acetone or trichlorethylene.  In modifications the copper strips may be plated all over with nickel by electrolytic or electroless deposition prior to the formation of the counter electrodes or the copper strips may be coated with lacquer, holes drilled through the strips and board, and the board immersed successively in the palladium chloride and nickel and/or cobalt solutions to form the counter electrodes on the inside of the holes. Alternatively a resistive panel clad with a copper foil may be treated to form counter electrodes by the photo-resist masking and plating technique the resist is stripped off and an etching resist applied defining the conductors and then copper is etched away to form the conductors which after removal of the resist are then "galvanically" plated with gold.  The electroless nickel bath used at 94 DEG C. comprises per litre .Sodium pyrophosphate.50g .Nickel sulphate.25g .Sodium hypophosphite.25g .Ammonium hydroxide to.pH 10-11  The electroless cobalt bath used at 95 DEG C. comprises per litre .Sodium hypophosphite.30g .Sodium citrate.20g .Cobalt chloride.35g .Ammonium chloride.50g  The "galvanic plating" gold bath used at 92-95 DEG C. comprises per litre .Ammonium chloride.75g .Sodium nitrate.50g .Sodium hypophosphite.10g .Potassium gold cyanide.2g .Ammonium hydroxide to.pH 7.0-7.5
Patent GB-1017766-A (GB)
Title: Improvements relating to glass-to-metal seals
Inventor: SCOTT WILLIAM JOSEPH
IPC: C03C29/00
Filed: 1962-10-23
Abstract: A metallic member in a glass to metal seal (see Division C7) is composed of an alloy consisting of 47% Ni, 48% Fe and 5% Cr.ALSO:<PICT:1017766/C1/1> The glass to metal seal of the parent Specification is modified by extending the outer member 7 beyond one end of the inner member 1 with the glass 3, 5 forming the seal between the inner and outer members extending over the end of the inner member 1. The inner member 1 may be composed of an alloy consisting of 47% Ni, 48% Fe and 5% Cr or an alloy consisting of 28% Cr and 72% Fe.
Patent GB-1445240-A (GB)
Title: Gas turbine power generating apparatus
IPC: H02K7/18
Filed: 1974-09-17
Abstract: 1445240 Driving arrangements for dynamoelectric machines HITACHI Ltd 17 Sept 1974 [17 Sept 1973] 40491/74 Heading H2A Gas turbine power generating apparatus comprises an electrical generator 11 having a hollow rotary shaft 21, a compressor 1 and turbine 2 mounted at opposite ends of a common shaft 6 extending through the hollow shaft 21, a combustion chamber 7 disposed in a fluid path between the compressor and turbine and a change speed gearing 8 interconnecting the two shafts 6, 21. The gearing 8 may be of the parallel shaft gear mechanism type, as shown, or of the epicyclic type, Fig. 3 (not shown).
Patent GB-1204745-A (GB)
Title: Improvements in or relating to concealed-type sliding clasp fasteners
Inventor: PUGH CHARLES CYRIL
IPC: A44B19/34
Filed: 1968-08-23
Abstract: 1,204,745. Sliding clasp fasteners. LIGHTNING FASTENERS Ltd. 12 Sept., 1969 [23 Aug., 1968], No. 40516/68. Heading E2S. A device for mounting sliders onto stringer tapes of concealed type sliding clasp fasteners attached to or unattached to garments comprises two channels 8 mounted on a base plate 6. The channels 8 as shown in Figs. 3, 4, 5 are twisted helically through 180‹ as the channels progress from the inlet end to the outlet end. The stringers are passed through the channels, and through the slider situated at the outlet end of the device. The channels may either be parallel or tapered towards each other. If they are parallel additional channels are provided to feed the stringer tapes into the slider. The channels may be mounted on, or integral with two separate base plates connected by a bridge 7. The stringer tapes are fed into the channels 8 in the unfolded state.
Patent GB-889130-A (GB)
Title: Face mask
Inventor: CHILDERHOUSE EDWIN PETER
IPC: A61M16/06
Filed: 1959-11-30
Abstract: 889,130. Respiratory appliances. AMALGAMATED DENTAL CO. Ltd. Nov. 29, 1960 [Nov. 30, 1959], No. 40601/59. Class 81 (2). An airway is associated with a face mask in order to ensure a free passage for gas administered to an unconscious patient. Gas enters the mask 1 through a tubular fitting 4 which has diametrically placed pairs of holes 6 to receive the ends of spring wire clips 7. These bear against projections 13 on the airway 12 to hold it securely in the desired position. The mask is first located under the chin of the patient and then tipped upward over the face so that the airway passes down the throat and holds the tongue down while ensuring a clear passage to the larynx.
Patent GB-410871-A (GB)
Abstract: 410,871. Magnetic measurements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thomas, H. P. ; 1061, Glenwood Boulevard, Schenectady, New York, U.S.A.) Dec. 1, 1932, No. 34039. Convention date, Dec. 1, 1931. [Class 37.] Course indicating or rudder-control apparatus, especially for aircraft, comprises an electromagnetic compass structure having an elongated magnetic vane influenced by the earth's horizontal component and energized by a periodically varying voltage, deviation of the vane in the earth's field varying the waveform of the applied voltage, which voltage variation, after rectification, is indicated on a central-zero indicating instrument. The vane 10, preferably of permalloy, has central restricted portions which are readily saturated and are wound with coils 11, 12 connected to resistances having a non-linear and therefore rectifying characteristic and forming a bridge which is energized by alternating-current or by a buzzer. The vane is mounted on a frame 13 carried in jewel bearings 19, 20 provided in arms 17, 18 integral with a trunnion member 16, rotation of the vane about its transverse axis being limited by stops provided on the frame which is pendulously mounted for stabilizing the vane in a horizontal plane. The azimuth crank 30 is geared to the trunnion 16 so that the direction in which the craft is headed is given for a predetermined position of the vane 10, preferably when the vane is preset so that its axis 37 lies east and west with regard to the direction of the earth's horizontal component. The coils 11, 12, are connected to slip-rings 39, 40, 41 by flexible leads which include instrument springs 42, 43, 44, the slip-rings being connected by brushes 48, 49, 50 to the instrument terminals 51, 52, 53. The flared poles of the vane 10 concentrate the magnetic flux in the constricted portions of the vane as well as functioning as dampers. Additional air damping may be provided by a central partition with constricted air passage. The casing 38 may be of aluminium or brass. Resistances 54, 55, of copper oxide or silicon carbide crystals, and an iron core reactor 56 form with the coils 11, 12 a bridge across which a galvanometer 65 is connected between the mid-point 66 and junction 67 of the coils 11, 12, the bridge being supplied by a battery-operated buzzer 61. Condenser 62 prevents continuous-current from reaching the bridge circuit, and condenser 68 prevents alternating-current from affecting the galvanometer reading. As the aircraft deviates from its set course the vane 10 picks up the horizontal field component in one direction or the other, and a component of rectified current from the resistances 54, 55 deflects the indicator of the galvanometer to the opposite direction from that through which the craft has turned off its course and in the same direction as that through which it must be turned to bring it on its course again. In a modification, one saturable portion only is provided on the vane 10, a single series circuit including a small alternator, coil 11, and resistance 54 being used instead of the bridge arrangement.
Patent GB-1056036-A (GB)
Title: Improvements relating to centralised control systems
Inventor: SHAND GEORGE
IPC: H04Q9/12
Filed: 1964-10-13
Abstract: 1,056,036. Electric selective signalling. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 4, 1965 [Oct. 13, 1964], No. 41745/64. Heading G4H. Groups of devices are controlled by frequencies selected by corresponding groups of switches, the groups of switches being rendered effective in turn by a stepping selector which at each step also selects a calling frequency signal to select the group of devices to be controlled at that step. A clock-driven binary counter at a central station selects through diodes combination of frequencies (or a single frequency) to select a group of road-hazard signs to be responsive to a combination of further frequencies common to all the groups of signs and selected by a group of manual switches also selected by the diodes. At the group of signs, the further frequencies actuate relays to illuminate signs corresponding to those of the further frequencies which are present and to send the same frequencies back to the central station. At the central station, the states of the manual switches are compared with the presence/ absence of returned frequencies, a lamp corresponding to a given switch being lit continuously on agreement and caused to flash on disagreement.
Patent GB-1158896-A (GB)
Title: An Electrical Feedback Control System
IPC: B65H23/198
Filed: 1966-09-19
Abstract: 1,158,896. Automatic control. GENERAL ELECTRIC CO. Sept.19, 1966 [Nov.29, 1965], No.41750/66. Heading G3R. Deviations of a variable cause operation of a plurality of electrical switch means to produce step signals and signals which build up at different rates in a storage device, pairs of these signals being combined so that the deviation is corrected at a rate corresponding to the magnitude of the combination which is effective at any given time. As applied to a system for automatically maintaining constant tension in material being wound on a drum, a spring-loaded dancer roll, forming a loop in the material, moves a shutter so that if the loop has a length corresponding to the desired tension, photo-cells 1 and 2, Fig. 3, are screened from light. Then, if tension decreases and loop length increases, photo-cell 2 is uncovered and rendered conductive so that a voltage, which immediately appears across a resistor 32, is amplified by transistors 47-49 to influence a controller 20 so that the speed of D.C. winding motor 13 is increased to restore proper tension. The voltage across resistor 32 is enhanced initially by a differentiating circuit 39, 41 and is later increased gradually by a voltage which builds up across a condenser 31. The voltage across condenser 31 leaks through a resistor 46 when photo-cell 2 is covered again. If tension should fall abnormally, photocell 1 is uncovered and a greater correcting voltage produced across resistor 32 and built up across condenser 31. If, however, tension increases abnormally, photo-cell 3 is covered to decrease the voltage across resistor 32 and rapidly discharge condenser 31 to decrease the speed of the winding motor. The motor current produces a voltage across a resistor 57 which, if low, renders a transistor 55 non-conductive to prevent further discharge of condenser 31 and fall of motor current. Use of A.C., hydraulic or pneumatic winding motors and use of switches other than photo-cells are referred to. Application to the control of speed or voltage is also referred to.
Patent GB-1336839-A (GB)
Title: Automatic system for controlling the angular position of the  headlights of a vehicle
IPC: B60Q1/105
Filed: 1972-09-08
Abstract: 1336839 Adjusting vehicle headlamps SOC ANON DBA 8 Sept 1972 [28 Sept 1971] 41847/72 Heading F4R An automatic device for correcting the inclination of the headlamps of a vehicle according to the trim of the vehicle body includes means for inserting a resistance in the headlamp supply circuit if the device fails. The device preferably comprises a pneumatic circuit 1 and the means includes a relay 12 in series with a first switeh 13 held open by the pneumatic pressure and a second switch 14 closed by variations in the vehicle trim. Loss of pressure in the circuit 1 when the suspension element 7 is deflected completes the circuit to the relay 12 which operates a contact 17 to insert the resistance 9 into the headlamp circuit. Preferably the resistance is placed in circuit with the dipped beam lamps.
Patent GB-1059916-A (GB)
Title: The formation of single crystals
Inventor: GASSON DENYS BROMLEY
IPC: C30B13/18
Filed: 1963-10-10
Abstract: A monocrystalline rod having growth striations normal to its longitudinal axis is formed by passing a resistance-heated perforated plate 5 (Fig. 1, not shown) and associated molten zone through a mono or poly crystalline charge rod 1 from a seed 3. Plate 5 may be of iridium or rhodium, may have one or more perforations 8, and may be curved (Fig. 2, not shown) or have a thick portion (Fig. 3, not shown) to form a convex surface in the direction of seed crystal 3. Charge rod 1 may be formed by pressing a mixture of calcium tungstate and up to 10% of impurity comprising sodium and neodymium tungstate into a rod and sintering.  Seed 3 may be maintained at a temperature just below its mp by means of a resistance heater 9.  Charge rod 1 may be surrounded by an atmosphere consisting of 90% of argon and 10% of oxygen in a silica tube 10.  Seed 3 may be rotated at 60-80 rpm. The molten zone may be passed at 1/8 to 3/4 in/hr.
Patent GB-1127328-A (GB)
Title: Mechanical apparatus
IPC: H02K33/00
Filed: 1965-10-04
Abstract: 1,127,328. Selective punching. HONEYWELL Inc. 4 Oct., 1965 [8 Oct., 1964], No. 42063/65. Heading B4B. A mechanical actuator for a selectable punch has a flexure member which upon being flexed against a stop transmits an output motion in the direction of its longitudinal dimension, the stop providing a concave back-up support for the flexure member along its length. In one form, punches 10, 11, Fig. 2, are actuated by interposers in the form of leaf springs of magnetic material which in a rest position are in contact with a bail 22 but are moved into contact with the surfaces 36, 38 of limit guides 32, 34 when electromagnets are energized. The bail is formed with a stripper 30 which eng ages stepped portions 18, 20 on the punches to move the punches upwardly after the punching operation. In a modification, the bail comprises vertical and transverse members 74, 72, Fig. 5, the member 74 clamping a leaf spring 70 secured to an extension 68 of a housing 64 surrounding a bushing 62 in which a powerdriven shaft 60 is eccentrically mounted. The lower portion of the member 74 terminates in a stripper 30. The member 72 has means for clamping thereto two groups of three flexures, i.e. the limit guides 32, 34, the interposer springs 40, 42 and a pair of bail guides 76, 78. The assembled actuator is supported by springs 80, 82 clamped to a fixed support 86. Instead of normally de-energized magnets, permanent magnets may be employed with bucking coils adapted to selectively provide an opposing magnetic field when punching is desired. The limit guides and the bail may be held stationary.
Patent GB-1479331-A (GB)
Title: Preparing c6-c18 n-alpha olefins
IPC: C10G9/00
Filed: 1974-09-30
Abstract: 1479331 C 6 -C 18  n-alpha-olefins TEXACO DEVELOPMENT CORP 30 Sept 1974 [31 Oct 1973] 42305/74 Heading C5E C 6 -C 18  n-alpha-olefins are prepared by (a) preheating a was charge stock to thermal cracking temperature, during which it passes through a temperature range of 625-800 F. in a time of less than 8 seconds; (b) thermally cracking the preheated wax feedstock in vapour phase in the presence of steam; and (c) recovering from the cracking effluent C 6 -C 18  n-alphaolefins while maintaining the severity value at less than 66.6, the severity value being defined as Int + 0À096 T where T is the log-mean average temperature in  F. of the liquid and t is the residence time in the recovery system. The recovery of the C 6 -C 18  α-olefins may be carried out by rectification of the cracking effluent followed by distillation of the rectifier bottom fraction to recover the desired olefins as overhead. A portion of the distillation residue may be recycled as quench liquid to the cracking effluent.
Patent GB-914290-A (GB)
Title: Spring-borne cradle for the current collectors of electrical vehicles
IPC: B60L5/22
Filed: 1960-12-09
Abstract: 914,290. Current collectors for electric railways. BROWN, BOVERI & CIE A.G. Dec. 9, 1960 [Dec. 10, 1959], No. 42431/60. Class 104 (3). In a spring-borne cradle for a vehicle current collector in which the cradle is supported by a spring system located between the upper joint of the current collector and the cradle and permits resilient movement of the cradle both in the vertical and horizontal plane, the system comprises two resilient elements which are coupled together, a first resilient element permitting resilient movement of the cradle in a vertical plane and a second resilient element permitting movement in a horizontal plane, the first resilient element being fixed to a rotatable axle of the second resilient element. In the arrangement shown a collector 1 is fixed to a cradle 2 which in turn is supported by a spring system 6, 7, 8, 9 from a tube 5 connecting the upper joints 3 of the arms 4 of a pantograph structure. The cradle 2 is connected to a stirrup 7 rotatably supported between one end of a pair of levers 6 which at their other end are connected to a metal bar of rectangular cross-section supported in a rectangular bore of a rubber sleeve held in a bore of a tube 8a of rectangular cross-section. The tube 8a is supported by an axle of rectangular crosssection extending into the bore of rubber sleeve of-an element 9 of similar construction to element 8. The element 9 is held, by a set-screw 11, in a sleeve 10 welded to the tube 5. In a modification, Fig. 6 (not shown), the rubber sleeves are replaced by coil springs.