baber/WOPTO huggingface dataset:
Patent GB-1066069-A (GB)
Title: Lower leg bandage protector
IPC: A61F15/00
Filed: 1964-12-05
Abstract: 1,066,069. Waterproof footwear, protective hose. E. P. FRANKLIN. March 7, 1966 [Dec. 5, 1964], No. 49596/64. Headings A3B and A3V. [Also in Division A5] A device to prevent a bandage or plaster casing on the leg from becoming wet comprises a waterproof covering including a foot portion to extend over the foot of the wearer and a leg portion to extend over at least part of the leg of the wearer. The leg portion is formed, at or near the end remote from the foot portion, with a chamber having an outer wall and a flexible inner wall, the chamber being arranged to surround the leg and being adapted to be inflated to cause the flexible inner wall to engage the leg and so form a watertight seal. As illustrated in Fig. 1, the inner wall may be formed to provide a plurality of flexible sealing rings adapted to engage the leg when the chamber is inflated. The device may terminate either above or below the knee, as required.
Patent GB-1195546-A (GB)
Title: Improvements in or relating to Electronic Overload Protection Circuit Arrangements
IPC: H02H3/087
Filed: 1967-11-03
Abstract: 1,195,546. Transistor switching circuits. SIEMENS A.G. 3 Nov., 1967 [4 Nov., 1966], No. 50071/67. Heading H3T. [Also in Division H2] A two-terminal excess current protection circuit comprises a potentiometer and two transistors connected substantially as shown and through a full-wave rectifier to the circuit terminals 1, 2. If excess current flows between these terminals the voltage across transistor T 2  rises from its normal low value. The resulting voltage at the tapping of the potentiometer renders T 1  conducting cutting off T 2  and thus most of the current flow between 1 and 2. If the fault is corrected the circuit will restore during the next passage through zero of the voltage across 1 and 2. A capacitor C helps to prolong the duration of the passage.
Patent GB-1078216-A (GB)
Title: A process for the production of high-purity semiconductor material
IPC: C30B15/00
Filed: 1965-11-25
Abstract: In a process for the production of high parity silicon semi-conductor material by single crystal growing, up to 1 atom per cent of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W is added to the silicon either in the form of gaseous compounds (e.g. chlorides) during the production of the silicon from a gaseous compound thereof, or in elemental form by adding to the melt.
Patent GB-1400295-A (GB)
Title: Transfoermer tapchanger
IPC: H01F29/04
Filed: 1972-11-01
Abstract: 1400295 Transformer tap changer ALLMANNA SVENSKA ELEKTRISKA AB 1 Nov 1972 [2 Nov 1971] 50291/72 Heading H1N [Also in Division F2]  A transfromer tap-changer having a selector 18 and a diverter switch 37-39 with a common drive 1 and in which the selector is first adjusted to a new position before the "diverter switch operates is provided with a snap action for the diverter switch by means of a spring stretching device driven by a gear-wheel 8 and a flywheel 31 arrangement, one or both of which have a freewheel (lost motion) feature whereby the energy stored in the spring 16 during the initial selection stage of a tap-change is suddenly imparted via the flywheel to move the diverter switch to complete the process. During a tapchange operation the drive shaft 1 moves half a turn (in either direction according to requirements) within which time the non-current carrying selector arm 19 connected to a slipring 21 moves to its new position and rotation of the disc 2 secured to the shaft drives the freely rotatable gear-wheel 8 via connecting rod 4 and the toothed segment 6 pivoted at 7. Stop surfaces 11 or 12 on the gear-wheel 8 allow for freewheeling before the driving pin 14 which is attached to lever 13 also freely rotatable on shaft 9 becomes engaged and spring stretching commences. The flywheel 31 and a bracket unit 43, Fig. 3 (and Fig. 4, not shown) is positioned so that a projection of the driving pin 14 normally engages approximately midway in an arcuate slot 32 of the freely rotatable flywheel thus constituting a second freewheel device governed by the slot length and when the pin 14 has turned through approximately 90 degrees it bears on one end of the slot so that the flywheel 31 accompanied by the gear-wheel 8 turn together against the controlling restraint of the brake (described later) until at the extreme 180 degree position of the pin from that shown in Fig. 1, the brake is released and the flywheel is allowed to rotate freely under the accelerating force of the stretched spring. On the side remote from the spring the flywheel has a driving pin 33 which falls into a slot 34 of a Maltese crossarm 35 pivoted on a shaft 36 and the crossarm is then swung rapidly under the control of a shaped boss 42 to impart a quick movement to the movable contacts 37-39 of the diverter switch which are supported on the crossarm and which are connected to terminal 41 via the bridging resistor 40 so that contact 37 finally takes up its new position in engagement with fixed contact 29. The disc type brake unit 43 with brake blocks 45, 47 is governed by roller 50 engaging a portion 52 or a high portion 51 of an annular guideway 52 for application or release and when a tap-change operation has been completed the roller moves back on to the low portion of the guideway for reapplication of the brake. Direct drive through pins 14 and 33 would give positive actuation in the event of spring fracture, there is provision for manual operation, and the brake operating range can be made adjustable.
Patent GB-1484510-A (GB)
Title: Heat exchangers
IPC: F28F9/00
Filed: 1974-11-20
Abstract: 1484510 Tubular heat exchangers SOC ANON DES USINES CHAUSSON 20 Nov 1974 [13 Dec 1973] 50398/74 Heading F4S In a heat exchanger such as a vehicle enginecooling or space heating radiator comprising tubes 2 connected at their ends to rectangular metal tube plates 1 each surmounted by a header box 8, e.g. of synthetic resin, and wherein the assembly is strengthened by metal side plates 10 extending parallel to the tubes and secured to the tube plates, each tube plate is formed with a peripheral groove the outer wall of which on the two longer sides of the tube plate is extended to form lugs 5 and on the two shorter sides of the tube plate is extended as an outwardly extending flange 15 with a bent-over end portion 15a. The side plates 10 are formed with shoulders 11  and off-set portions 12 each with a slot 13 in its free edge providing also lugs 14, Fig. 1. On assembly, after the tube ends have been positioned in the tube plates 1, the side walls are positioned so that the underside of the tube plate peripheral groove 3 is seated on the shoulder 11 the lugs 15 being folded over to hold these parts 1 and 10 together. Thereafter they may be secured by welding or brazing. A flange 7 on the header box 8 is then positioned together with a gasket 6 in the tube plate peripheral groove, and, by folding over the lugs 5 (as shown in Fig. 3) and the lugs 14 (as shown in Fig. 4) the header box and tube plate are secured together.
Patent GB-1492736-A (GB)
Title: Endoprosthetic bone joint devices
IPC: A61F2/38
Filed: 1973-10-31
Abstract: 1492736 Prosthetic bone joint; artificial limbs NATIONAL RESEARCH DEVELOPMENT CORP 29 Oct 1974 [31 Oct 1973] 50594/73 Heading A5R An endoprosthetic or exoprosthetic bone joint e.g. for the knee, elbow, ankle or finger comprises a ribbed portion 10 and a hollowed portion 20 each having two elongated mutually engaging bearing surfaces respectively convex 11 and concave 23, and connecting the two portions are three elongate flexible members 31, 32, 33 which form a diagonally crossed configuration Fig. 3 (not shown). These flexible members are connected to the portions 10, 20 at their ends and seat against V-shaped bridging portions 12, 22 such that they constrain the two portions against lateral movement but allow rotation about an axis along the direction of the V-apices of the bridging portions. The portions 10, 20 respectively have a plate 16, 26 condyle engaging stems 15, 25 and through bones 17, 27 for countersunk bone screws to attach the portions to each of the bones respectively.
Patent GB-1034210-A (GB)
Title: Strip-lighting system comprising elongated lighting units and an open channel-section conduit
IPC: F21V21/00
Filed: 1963-12-23
Abstract: 1,034,210. Lighting fittings. E. LENZE. Dec. 23, 1963 [Dec. 27, 1962; Oct. 17, 1963], No. 50619/63. Heading F4R. [Also in Divisions E1, E2 and H2] A strip.lighting system comprises elongated lighting units 10 suspended with their tops applied to the open side of a channel section sheet metal conduit 1, the suspension means being slidable to the required position of adjustment on a rail 3a provided at the back of the conduit. The suspension means comprises holders 8, each of which is clamped to the rail by a screw 13 engaging a clamping plate 12 and has a depending extension 9 to which a lighting unit 10 is attached by a screw 11. The holder also supports a transverse bracket 4 having a hookshaped arm 4a for carrying cables 5 and a straight arm 4b carrying clips 6 for supply leads 7 to the lamp. In a modification the bracket is integral with the holder. The conduit may project from the ceiling or be embedded therein.
Patent GB-1197776-A (GB)
Title: Polyalkylene Glycolesters and their use as Antifoams
IPC: B01D19/04
Filed: 1967-11-08
Abstract: 1,197,776. Diesters of polyalkylene glycols. BADISCHE ANILIN- & SODA-FABRIK A.G. 8 Nov., 1967 [9 Nov., 1966], No. 50711/67. Heading C3R. [Also in Divisions B1, C5 and D2] An anti-foaming agent comprises the diester of an adduct of ethylene oxide, if desired, followed by propylene oxide, with a polypropylene glycol, the adduct having a mean molecular weight of 1000 to 5000 and a content of 15 to 60% by weight of ethylene oxide, with a saturated fatty acid having 12 to 18 carbon atoms. The initial polypropylene glycol may have a molecular weight of 600 to 2500. The esteriflcation of the adduct may be effected using the free acid or halide or ester. The acid may be a natural or synthetic, branched or linear, aliphatic monocarboxylic acid, e.g. lauric, tridecanoic, myristic, palmitic, margaric and stearic acids, or their mixtures, e.g. those formed by cracking natural fats. The esters may be used as such or as aqueous emulsions or as solutions in, for example, alcohols or ketones. They may also be adducted with urea, mono- and di-alkyl ureas, thioureas or adsorbent inorganic substances such as active carbon, aluminium oxides, e.g. bauxite, diatomaceous earth, zeolites and silica gels. They may be used in the preparation of paper and pulp, detergents, wetting agents, textile treating agents, plant protection concentrates &c.
Patent GB-1141663-A (GB)
Title: Improvements in or relating to control devices
Inventor: WILLIAMSON HENRY ARNOLD
IPC: H01H3/40
Filed: 1965-12-01
Abstract: 1,141,663. Valves. MINISTER OF TECHNOLOGY. 23 Nov., 1966 [1 Dec., 1965], No. 50964/65. Heading F2V. [Also in Divisions G1 and H1] A multi-pole switch having a contact carrying drum 7 rotatable about a shaft 8 and surrounding a fixed contact carrying drum (9, Fig. 3) is controlled by a rotatable knob or lever 1 carrying a star gear 4 meshing with gear teeth 12 on a flange 11 on drum 7, and drum 7 carries indicators 21 successively visible through a magnifying lens 6 in a hole 5 in knob 1. Drum 7 is moulded with metal annuli 13, a lug (15, Fig. 3) on each annulus projecting from the outer surface for connection to a strip of a flexible tape cable (14, Fig. 1). Annuli 13 project from the inner surface 18 to form contacts 19, so that at each of a given number of equispaced angular positions around surface 18 a different combination of contacts 19 are in line. The fixed drum (9) has along its outer surface gold wire interconnected brushes (20, Fig. 3) connected to interconnected brushes 20a to short different combinations of contacts 19 for different angular positions of drum 7. One strip of the tape cable acts as the input, and two identical patterns of combinations of contacts 19 are provided on each half of surface 18. More than one strip may act as an input, and brushes 20 and 20a need not be connected to one another. Holes (23, Fig. 3) on flange 11 co-operate with a spring-loaded detent (24, Fig. 3) to locate the switch in said angular positions, and stops 25 are also provided. In a modification, the fixed drum (9) carries metal annuli 13 and rotatable drum 7 carries starting brushes in the form of leaf springs, and these locate the switch by co-operating with dimples in fixed drum (9). A plurality of such switches may be mounted on the same shaft, each being independently controlled by a separate knob 1 (Fig. 1). A lamp and a single transparent light guide (22, Fig. 1) are provided. Drum 7 may be replaced by a linearly movable member. Lens 6 provides a moisture seal for knob 1 and the switch is mounted in a moisture sealed casing. The device may be an hydraulic valve.
Patent GB-996946-A (GB)
Title: Methods of and apparatus for producing electric heater tubes incorporating resistors
IPC: B22D18/06
Filed: 1963-12-27
Abstract: 996,946. Casting composite articles.  L'EQUIPMENT THERMIQUE S.A. Dec. 27, 1963 [Jan. 2, 1963], No. 51040/63. Heading B3F. A method of filling heater tubes 6 incorporating resistors 7 embedded in a metal, e.g. silver, aluminium or copper, comprises the step of drawing into the heater tube and an axial extension 13 thereof a column of molten metal appreciably higher than the heater tube itself and then causing this column to crystallize from the bottom upwards. The heater tubes form banks and simulate rods used as nuclear fuel for the study of heat exchange problems. The molten metal from the melting pot 3 is drawn into the heated tube 6 by suction, a condenser 16 protecting the pump 15 from metal vapour. The solidification is controlled by a cylinder 17 which incorporates independently operable heaters 18-23 and which is vertically movable by means of a cable 29. A water jacket 10 around the metal inlet pipe 9 permits freezing of a plug of metal in the inlet pipe after the tube has been filled. The inner wall of the tube 6 and the outer wall of the resistor 7 may be electrolytically metallized.
Patent GB-1220800-A (GB)
Title: Improvements relating to electronic musical instruments
IPC: G10H1/043
Filed: 1969-10-17
Abstract: 1,220,800. Electronic musical instruments. WURLITZER CO. 17 Oct., 1969 [15 Nov., 1968], No. 51178/69. Heading G5J. An electronic musical instrument includes a pulsato signal generator and a circuit such that on operation of a switch the pulsato signal is introduced at a rate dependent on a time constant of the circuit to modulate the sound. In an electronic organ (12) glissando and vibrato effects are produced by operation of a switch 22 on the swell pedal (20) by the toe of the organist (Fig. 1, not shown). To produce vibrato, the ON/OFF switch 110 is switched on i.e. the opposite position to that shown. The instrumental vibrato switch 122 is also switched on, opposite to the position shown. A low frequency oscillation produced by an oscillator 36 is passed through a buffer amplifier stage 72. During steady state operation the capacitor 82 is charged from the voltage rail 44, junction 84 being at negative potential, thus cutting off the diode 86. The oscillations pass through the capacitor 88 and resistor 92 to the tone generator vibrato bus 100, producing the vibrato effect. The depth switch 109 controls the amount of oscillation applied to the bus 100, being minimum in the position shown, and maximum in the opposite position. On operation of the toe switch 22 the bus-bar 100 is shorted to earth through contact 146, inhibiting the vibrato. At the same time the junction 84 is brought near earth potential through the ganged contact 142. This brings the diode 86 into its conducting state, thus shorting the oscillations to earth. On releasing the switch 22, as capacitor 82 charges up, the vibrato effect is gradually reinstated, the rate depending on the time constant of the capacitor 82 and diode 86. To produce glissando the instrumental vibrato switch 122 is switched to the position shown. On closing the normally open toe switch 22 the tone generator slide bus 134 is connected to earth through resistor 140, thus de-tuning the generators by a semitone. At the same time the contact 146 closes shorting the tone generator vibrato bus to earth. On releasing the switch the tone generators drift back to their natural frequencies producing the glissando effect.
Patent GB-1219165-A (GB)
Title: Torsionally resonant gravity gradient sensor
IPC: G01V7/10
Filed: 1968-10-29
Abstract: 1,219,165. Measuring gravitational field gradient electrically. HUGHES AIRCRAFT CO. Oct.29, 1968 [Feb. 2, 1968], No.51181/68. Heading G1N. Apparatus for measuring static gravitational field gradient is as described in Specification 1,105,491 but a modification of the sensor head, employing two mass dipoles and a single strainsensitive transducer, is described. A torsionally resonant gravity gradient sensor head 10 comprises two orthogonally disposed mass dipoles 11 and 13 formed by arms 23, each supporting masses, 21, at either end. The arms are connected at their centres by a torsionally flexible spring member 19, attached to which is a strain-sensitive transducer 25. In use the head is rotated at a constant angular velocity by a servo loop 57-67, the velocity feedback signal from photo-electric detector 61 being employed also as a frequency and phase reference in the detector 73. The gravitational field induces forces in the dipoles at harmonics of the rotation frequency the sensor head being made resorant at one of the harmonic frequencies, the second in the embodiments described. The second harmonic frequency i.e. the resonant frequency of the sensor, then produces from the transducer 25 and output signal which is proportional in amplitude and of similar phase sense to the magnitude and direction of a corresponding gravitational field gradient, frequency selection being aided by a resonant circuit, tuned to the second harmonic, arranged in parallel with a low-noise preamplifier 51. The output signal is transmitted to the detector 73 by an FM link 53, 69, 71. The transducer may be a Piezo-electric crystal, or a capacitive or magneto-strictive type. In an alternative sensor construction Fig. 3 (not shown) a non-metallic flexible spring member (19<SP>1</SP>) comprises two spaced cylinders (101, 103) carrying respective sleeves (105, 107) between which are connected two flexible links (109) (one only shown). A strain sensitive transducer (25<SP>1</SP>) is attached to one of the links. A third embodiment Fig. 5 (not shown) employs a sensor housing (203) which rotates with the head (10<SP>1</SP>) thus giving windage reduction and electrostatic and electromagnetic shielding. The mass dipoles (11<SP>1</SP>, 13<SP>1</SP>) are supported by two torsional support springs (201), the inevtia of a dipole being matched to the resonant frequency of its associated spring so that in use a given torque produces equal dipole deflections which therefore cancel out. The housing is coupled to a rotor shaft (205) in a bearing 207 and bearing cup (209), rotation being from a motor assembly (67<SP>1</SP>) comprising a rotor (211) on the other end of the shaft (205) in a stator (213). Low noise bearings e.g. air or magnetic types are used. Some mathematical analysis is given and it is shown that for an exemplory sensor a gravitational gradient of about 10<SP>-11</SP> sec<SP>-2</SP> may be detected.
Patent GB-1034558-A (GB)
Title: Process for dyeing microporous polyurethane material
IPC: D06N3/00
Filed: 1964-12-16
Abstract: Sheets of microporous polyurethane material are dyed by immersing them in an aqueous dye solution at pH 3-9 containing a water-soluble anionic dye containing at least one water-solubilising group linked below with an empirical figure related to its water-solubilising power: -SO3- <FORM:1034558/D1-D2/1> -OH (0.25), -NH2 (0.25), -NH- (0.25), -OCH3 (0.25), -NH-CO-NH- (0.25), -SO2NH- (0.25), -SO2- (0.25) and -CONH- (0.25), the dye having an "equivalent weight" (its molecular weight divided by the sum of the solubilising values above) of 200-600, the dyed material being then masked in water and dried. The dyes are preferably anionic azo or anthraquinone dyes having an "equivalent weight" of 250-500.  The process may be carried out by using a dyebath at 75-100 DEG C. initially at pH 7 and reducing to pH 5 by adding acetic, formic or citric acid.  The microporous sheets may contain a porous fibrous substrate of many specified types especially polyethylene terephthalate fibre and the polyurethane may contain up to 50% of polyvinyl chloride.  The dyed materials may be after-chromed to improve the fastness.  Examples are given.
Patent GB-1280083-A (GB)
Title: Method and apparatus for the output stabilisation of infra red gas lasers
Inventor: ERBEN KLAUS DIETER
IPC: H01S3/134
Filed: 1970-10-29
Abstract: 1280083 Lasers MESSERSCHMITT-BOLKOW-BLOHM GmbH 29 Oct 1970 [30 Oct 1969] 51433/70 Heading H1C The output intensity of an infra-red gas laser is stabilized by measuring the intensity of a non- lasing line, e.g. a nitrogen line in a CO 2  laser, and controlling the pumping discharge to maintain that line intensity constant. The Fig. shows a CO 2  laser 10 with a monochromator 20 which passes light 14 from a nitrogen line to a photodetector 30. The photodetector signal is amplified at 40 and compared with an adjustable control signal at 50 to give an error signal 51 and thereby control the pumping source 60, 70. Because the nitrogen output is a function of population inversion, this also stabilizes the lasing output. An uncooled photodetector may be used. It is stated that fluctuations in the non- lasing line precede fluctuations in the lasing output, so that the control signals may be derived before the lasing output varies.
Patent GB-1130347-A (GB)
Title: Self priming liquid pumping system
IPC: F04D9/00
Filed: 1965-12-08
Abstract: 1,130,347. Centrifugal pumps; priming pumps. HUDSON ENGINEERING CO. Dec. 8, 1965 [Dec. 16, 1964], No.52126/65. Headings F1A and F1C. In a priming system for a pump, e. g. a multistage centrifugal pump 11, Fig. 1, a priming valve 3 is positioned outside the conduit 4, preferably on a removable section 6, to facilitate replacement and maintenance of the valve. An inspection window 7 permits access to the valve. In the event of loss of prime of the pump, the valve is opened to permit liquid in the conduit to be recirculated back to the suction well 5. The well has an inlet 2 which may instead be at the top of the well. The valve is actuated by a spring- biased piston (41), Figs. 2 to 5 (not shown), or a diaphragm, controlled by a pressure representative of the velocity of flow in the conduit 4 either downstream of or intermediate the pump stages. The pressure is sensed by a funnelshaped sensor (56) or a Venturi-shaped sensor (62), or by pitot tubes (94) arranged within a Venturi (80). A passage 15 having a check valve 16 allows air to pass from the well to the conduit during priming.
Patent GB-1487857-A (GB)
Title: Compositions containing ethylene/propylene copolymers
IPC: C08L23/00
Filed: 1974-12-03
Abstract: 1487857 Fibre-reinforced compositions E I DU PONT DE NEMOURS & CO 3 Dec 1974 [4 Dec 1973] 52311/74 Heading C3P An injection mouldable, curable, elastomeric composition, claimed per se, comprises (a) an ethylene/propylene copolymer containing 65- 78% by weight of ethylene units and having an inherent viscosity of 0À8-1À6 dl./g., (b) 5-30% by weight (based on the total composition) of glass fibres randomly distributed throughout the composition, and (c) 40-150 parts by weight of carbon black per 100 parts of copolymer. Optional addition comonomers in the copolymer comprise monoreactive non-conjugated dienes such as 1,4-hexadiene and 5-ethylidene-2-norbornene, and C 5 -C 110  direactive diolefins such as norbornadiene-2.5. In the examples the copolymers contain ethylene, and propylene and, in two cases, 2,5-norbornadiene and 1,4- hexadiene, and are mixed with chopped glass fibres, carbon black, paraffinic rubber processing oil, ZNO, zinc stearate, zinc dibutyldithiophosphate, mercaptobenzothiazole and sulphur.