baber/WOPTO huggingface dataset:
Patent GB-682528-A (GB)
Abstract: 682,528. Gyroscopic apparatus. DOVE, F., LUTTRELLE, W. F., and SPERRY GYROSCOPE CO., Ltd. Jan. 4, 1951 [Jan. 16, 1950], No. 1073/50. Class 97 (iii). In an electrically operated gyrovertical adapted to be brought rapidly into a normal operating condition wherein a rotor mounted in a case 1, Fig. 2, having freedom to tilt about two mutually perpendicular horizontal axes is maintained substantially vertical by gravity responsive erection control means, a movable mass 7 is mounted for vertical movement on the case 1 and has a winding 10 which when energized moves the winding and mass upwards to abut a stop 11 rigid with the case and thereby change the rotor bearing case from a pendulous, to a normal operating condition, in which it is in neutral equilibrium with respect to its horizontal axes of support. The spool shaped mass 7 of magnetic material is mounted on a pair of J-shaped blade springs 8, 9, attached to the top of the case 1. A shaft 12 extends through a bore in mass 7 without touching it and supports the plate 11 of magnetic material to which the mass 7 is attracted when the winding 10 is energized. On closing switches 26, 37, Fig. 3, the stator windings 19 of the rotor are energized by a stepped-up voltage through autotransformer 24, from the three-phase source 20. After a predetermined time interval the time switch 29 closes, winding 10 is energized from source 28, and the mass 7 moves upwards carrying with it the arm 17 attached thereto thus breaking the contact 15 and allowing the resistor 16 to reduce the holding current through winding 10. Practically simultaneously with, the closing of switch 29, time switch 39 closes and the twophase torque motors 3, 4, acting about the pitch and roll axes respectively come into operation. The winding 34 of torque motor 4 is energized through the contacts E, F, of a mercury switch 37 detecting tilt about the pitch axis whilst torque motor 3 is similarly connected through a mercury switch 41 at right angles to switch 37. The winding 33 of torque motor 4 is connected in series with one leg of winding 19 so that the initial high current through the stator windings 19 increases the initial torque of motor 4. When the rotor has attained its normal speed, time delay device 42 moves switch 25 to the left-hand position and windings 19 are supplied with the normal operating voltage.
Patent GB-718338-A (GB)
IPC: B01D3/40
Abstract: 718,338. Purifying acetone by extractive distillation. USINES DE MELLE. Oct. 1, 1952 [Oct. 2, 1951], No. 24627/52. Class 32 Acetone containing organic impurities is purified by feeding the impure acetone into a middle section of a fractionating column which is heated at the base while introducing substantially-boiling water into the top section of the column, and controlling the amount of heat supplied to the base of the column and the quantity of water introduced into the top of the column so that the concentration of acetone is not greater than 15 per cent. by volume just below the feed point for the impure acetone and is less than 10 per cent. above said point, and so that an aqueous solution containing 2 to 10 volume per cent. of acetone, substantially free from impurities is obtained at the base of the column while a fraction having a high content of impurities is withdrawn from the top section of the column. Impurities removed in the process comprise acetaldehyde, propionaldehyde, alkyl formates, ethyl isopropyl ether, ethyl acetate and other esters, alcohols and other substances having boiling points up to 240‹C. Impure acetone is fed at 120 litres per hour through pipe 1 into the side of column A, the base of which is supplied with heat at the rate of 600 kg-cals. per kg. of feed; and hot water is introduced into the top of the column through pipe 4, so as to obtain an aqueous solution containing 5.6 per cent. of acetone at the,base of the column. The top section of column A is provided with a decanting plate 5, i.e. a plate having thereon a chimney through which the vapours can rise freely without bubbling through the liquid on the plate. The upper liquid layer, which separates on this plate, has a high content of impurities, and is withdrawn through pipe 6. The overhead vapours are condensed; part of the condensate is withdrawn from the system via pipe 7, and the remainder is refluxed to the top of the column. The purified aqueous solution of acetone, withdrawn from the base of column A, is introduced into column B via pipe 2. Pure, concentrated acetone is withdrawn in the liquid state from the top section of column B through pipe 8. Low-boiling impurities (e.g. alkyl formates), not removed from the acetone in column A, are. withdrawn overhead from column B; and part of the condensate is withdrawn from the system via pipe 9, part is returned to column A via pipe 10, While the remainder is refluxed to the top of column B. The hot water obtained at the base of column B is pumped through line 4 and flowmeter 4a to the top section of column A.
Patent GB-2022308-A (GB)
Title: Automatic record changer
IPC: G11B3/085
Filed: 1978-07-04
Abstract: An automatic record changer has a rotatable turntable 12, a drive plate 38 concentric with the turntable and rotatable independently thereof, automatic record changing means for successively depositing records onto the turntable during successive record changing cycles, means for rotating the drive plate, a low friction washer 52 positioned between the drive plate and the turntable, the washer normally transmitting a driving force to the turntable from the drive plate, and means for stopping the turntable during a record changing cycle while the drive plate continues to rotate and the washer allows the drive plate to slip with respect to the turntable. <IMAGE>
Patent GB-2002071-A (GB)
Title: Internal shoe-drum brakes
IPC: F16D65/46
Filed: 1978-07-11
Abstract: An internal shoe-drum brake has an actuator between one pair of shoe ends, and an adjuster 9 between the other pair, and a thrust-transmitting mechanism 12 mounted on one or both shoes. The mechanism 12 transmits thrust from the actuated shoe end to the opposite end, so that the shoe acts as a leading shoe, and comprises two bell-crank levers 13, 14 mounted on the shoe, with their outer arms 16, 17 co-operating with abutment faces 11, 6 on the adjuster 9 and actuator 5, and a strut 15 engaging between their inner arms. One of the levers 16 acts on the abutment face 6 through an adjuster screw 18, adjustable to compensate for differential wear of the friction linings 3. To prevent the adjuster screw 18 indending the abutment face, which may impede relative sliding movement between them, and reduce braking efficiency, a thrust-transmitting bearing pad is interposed between the adjuster screw 18 and the abutment face 6 on which it acts. <IMAGE>
Patent GB-2003321-A (GB)
Title: Integrated circuit package structures
IPC: H01L23/32
Filed: 1978-07-18
Abstract: An integrated circuit package structure for electronic timepieces, comprising an integrated circuit holder 1 moulded from plastics which comprises a container 2, a frame 3 surrounding the container, and bars 4 connecting the container with the frame. The container is received within an aperture 6 provided in a circuit board 5, and an integrated circuit chip 8 is secured in the container. Electrodes of the integrated circuit chip and electrodes 7 provided on the circuit board are wire-bonded and synthetic resin is potted in the frame which limits the spreading range of the resin. <IMAGE>
Patent GB-2002808-A (GB)
Title: Particulate additive for detergent compositions
IPC: C11D3/36
Filed: 1978-08-11
Abstract: A free-flowing particulate agent suitable for use as an additive in particulate detergent compositions, contains components "(a)" and "(b)" as specified below in an approximate ratio by weight of 0.05:1 to 1:1. The component "(a)" comprises one or more primary and/or secondary and/or tertiary orthophosphoric acid esters whose alcoholic component(s) comprise(s) an aliphatic alcohol having 1 to 24 carbon atoms, the reaction product of a fatty alcohol with 2 to 30 moles of ethylene oxide, or phenol or a reaction product of C7-C20 mono-, di- or trialkylphenol with 4 to 20 mols of ethylene oxide; the component "b" comprises pulverulent anhydrous sodium sulphate or tripolyphosphate or a mixture thereof, and has a bulk density of at most 600 g/l, and its particles have the liquid or molten component "(a)" sprayed on to their surface. The agent, in addition to being reasonably easy to prepare, thus has a carrier for its component "(a)" which is itself of positive value in washing procedures.
Patent GB-2034797-A (GB)
Title: Locking buckles
IPC: A44B11/00
Filed: 1978-09-12
Abstract: One portion 3 of a security belt 1, adapted to be fastened about a container to prevent unauthorised access, is provided with a buckle 2. The other portion of the belt engages in the buckle with a belt end portion 9 extending therethrough and arranged to receive a lockable member 11 preventing withdrawal of the belt end through the buckle. The member may be a padlock engaging in holes in one belt portion, in both belt portions, in the belt end portion and the buckle or in both belt portions and the buckle. If a buckle with a tang is used, the lockable member may engage in a tang hole. <IMAGE>
Patent GB-2006018-A (GB)
Title: Artificial hair
IPC: A61F2/10
Filed: 1978-10-13
Abstract: A strand 1 of artificial hair comprises a shaft portion 2, and a root portion 3 integral therewith, the root portion being formed into a closed loop 4 so that when the root portion of the hair is implanted in the human skin, the regenerating fibrous tissue of the skin will be able to enter into the closed loop 4 of the root portion so as to anchor it firmly in the skin. The hair is preferably made of a predetermined length of polyethylene or polybutylene terephthalate fibre. In an alternative embodiment the root portion comprises two closed loops. <IMAGE>
Patent GB-2038201-A (GB)
Title: Liquid membrane emulsions and uses thereof
IPC: C09K23/00
Filed: 1978-12-22
Abstract: The emulsions, which are stable between -20 DEG C and 120 DEG C or the lowest boiling point of any emulsion component, comprise (a) a water-immiscible exterior oil phase containing 0.001-50 wt% of an additive which is the sole surfactant and membrane-strengthening agent present and which contains hydrocarbyl chain(s) of four or more carbon atoms substituted by polar group(s) containing oxygen, nitrogen or sulphur; and, (b) 25-90% wt of an interior phase. The preferred additive has the general formula:-   <IMAGE> wherein n is 10 to 60, x is 3 to 10, and y is selected from hydrogen, hydrogen- or hydrogen and oxygen-containing nitrogen radicals, and alkyl radicals having up to 10 carbons which may contain nitrogen, oxygen or both. The emulsions are useful in removal of a chemical species by absorption from a feed into the interior phase of the emulsion or for releasing a chemical species from the interior phase into a desired environment.
Patent GB-2013615-A (GB)
Title: Article location on a pallet
IPC: B65D19/44
Filed: 1979-01-18
Abstract: A pallet for supporting and laterally locating arrays of upright containers, particularly beer containers, of different sizes, comprising a flat body 1 with upstanding portions 2 arranged to locate, for example, either four barrels 3 or six kilderkins 4 or nine firkins 5. <IMAGE>
Patent GB-2041635-A (GB)
Title: Electron tube
IPC: B23K35/00
Filed: 1979-02-01
Abstract: One bonding surface between the - e.g. glass - end plate 12 and tubular wall 11 of a discharge tube is formed by the end wall 16 - of at most 0.4 mm wall width - of a hollow metal cylinder 15, while the other bonding surface 14 is flat and wider than 0.4 mm,the two surfaces being hermetically bonded together by a cold pressure bond formed of a cold deformable metal, the specified dimensions ensuring that the pressure required for the bond is only a few kg per cm of length of bond. Members 13 and 15 may be of an iron-nickel-cobalt alloy with gold, copper, or silver coatings 17 and 18, the cold deformable metal 19 being indium, tin, or lead. <IMAGE>
Patent GB-2013392-A (GB)
Title: Electric storage batteries
IPC: H01M50/534
Filed: 1979-02-14
Abstract: There is disclosed a sealed lead acid button cell which has a case 15 having a central terminal 12 in each face, each electrode having a terminal strap 30 which extends up and is connected to the terminal in the face of its half of the cell. Each electrode is preferably formed from two halves joined by a narrow integral strip of metal which is folded at its mid point so as to make a terminal strap of double the thickness. The narrow integral strip of metal is fed through a central aperture in the case which is in the form of a boss and is connected to the terminal outside the casing, by being folded down the outside of the boss and compressed between the outside face of the boss and a metal cap 32 to form the terminal. <IMAGE>
Patent GB-2018854-A (GB)
Title: Block foundations for brick walls
IPC: E02D27/01
Filed: 1979-04-09
Abstract: To enable foundations to be laid simply and quickly without the need for shuttering and having to wait for the concrete used to set, a plurality of foundation stones (1, 23, 24) are placed side by side in an excavation for the foundations. The foundation stones (1, 23, 24) have a ground surface (2) which is of greater length (a) than the upper surface (5) of the stone (1, 23, 24) whilst of equal width (b) to the upper surface (5). The sides of the foundation stones (1, 23, 24) are formed as either slopes (7, 8) or a vertical surface according to their intended position in the foundation structure. For corners, an inclined lateral surface of a foundation stone may be provided. The stones may be layed directly on the ground or on a bed of gravel or mortar. Notches 10 receive lifting tools. <IMAGE>
Patent GB-2020904-A (GB)
Title: Apparatus for intermittent wiper operation
IPC: H01H50/18
Filed: 1979-04-18
Abstract: An apparatus for the intermittent operation of windscreen wipers has a thermosensitive switching device comprising a bimetallic strip (5) with a pair of switching contacts (12, 13) that open and close the circuit to a heater winding (6) for the strip, and in this way generate a cyclic operation of the contacts. An electromagnetic relay has a contact (9) for switching the wiper motor on and off and is operated by the switching contacts of the thermosensitive device which also open and close the circuit to the relay coil (3). One of said pair of switching contacts is insulated from but attached to the pivoted switching armature (4) of the relay by the bimetal 5 or directly thereon and the other is fixed or on a fixed bimetal (not shown). The movement of the armature on deenergisation of the relay can thus be arranged to augment the opening movement of the pair of contacts initiated by the heating of the bimetallic strip. <IMAGE>
Patent GB-2023804-A (GB)
Title: Solar radiation collectors
IPC: F24S10/95
Filed: 1979-05-23
Abstract: A solar collector comprises a heat pipe (4) having an absorber plate (5) secured to its evaporator portion. The evaporator portion is surrounded by a glass cover (1). Along the length of the interior of the evaporator portion, a cascade-like arrangement of pockets (101) is provided for receiving condensate. <IMAGE>
Patent GB-2026238-A (GB)
Title: Cooling apparatus for electrical elements
IPC: H01L23/473
Filed: 1979-07-19
Abstract: A cooling apparatus for high- power semiconductors with fluid cooling, especially for track-bound vehicles or railroads and for generator excitation. The disk-shaped semiconductor elements to be cooled are in pressure contact with metallic cooling elements and are arranged, in conjunction therewith, in flow channels 23. The cooling agent flows through such cooling elements which comprise, perpendicular to their contact surface with the semiconductor elements, head conducting elements in a plug or plate configuration. These heat conducting elements produce a turbulent fluid flow. The cooling element base or floor can have a non-uniform wall thickness. Two substantially identical cooling elements can be in heat conducting contact with one another by means of their heat conducting elements, and a flow conducting plate, arranged between such cooling elements, can be employed as electrical contact. <IMAGE>
Patent GB-2042416-A (GB)
Title: Method and apparatus for manufacturing wood mouldings
IPC: B27G1/00
Filed: 1979-10-24
Abstract: An elongated moulding rip 10 having a portion L2 containing a flaw such as a knot which is unacceptable in clear grade mouldings is converted into a substantially flawless clear grade moulding, by cutting said rip transversely at both ends of the portion containing the flaw to provide smooth complementary first and second scarf joint faces 18, 20, removing the portion containing the flaw from between the first and second scarf joint faces, bonding the first and second scarf joint faces of the two flawless portions 12a, 12b to one another to form a scarf joint and working the clear grade moulding, so formed, to produce a profiled moulding having a substantially flawless clear grade surface finish. The scarf joint faces are positioned in abutting relationship during gluing by a pair of reciprocable fingers 36, a pair of pressure pads 42 and a reciprocable platform 34. <IMAGE>
Patent GB-2040386-A (GB)
Title: Connecting device
IPC: A47B88/00
Filed: 1979-11-30
Abstract: A connecting device for interconnecting components such as drawer wall panels at right angles to one another has projections 9 adapted to engage with the ends of the wall panels to be interconnected, the respective projections which engage with the panels being carried on separate parts 5, 6 of the connecting device which may be interengaged so that the respective projections extend at right angles to one another. In this way the connecting device may be supplied in separable parts which can be packed flat, the parts being interengaged during assembly of the drawer or other article so that the projections and the wall panels or other components engaged therewith extend at right angles to one another. <IMAGE>
Patent GB-2038572-A (GB)
Title: Control circuits for fluorescent lamps
IPC: H05B41/04
Filed: 1979-12-05
Abstract: In a fluorescent lamp starting circuit wherein current is supplied to the lamp heaters (H1 and H2) during starting via a thyristor (T), the thyristor gating circuit includes a positive temperature coefficient resistor (PTC). If the lamp (FL) fails to ignite the positive temperature coefficient resistor value increases so that the thyristor (T) fires only occasionally and overheating of components of the starter circuit is avoided. The positive temperature coefficient resistor may be arranged to be responsive to the heat from the thyristor or other circuit component or to the current flowing through itself. <IMAGE>
Patent GB-2040924-A (GB)
Title: Process for the simultaneous manufacture of pure methyl t butyl ether and a substantially isobutane-free mixture of c-hydrocarbons
IPC: C07C67/00
Filed: 1979-12-12
Abstract: A process for the simultaneous manufacture of pure methyl tertiary butyl ether (MTBE) and a substantially isotubene-free mixture of C4-hydrocarbons, by reacting the isobutene contained in the mixture of C4-hydrocarbons with excess methanol in the liquid phase at elevated temperatures on strongly acid, macroporous, organic ion exchange resins. The process has the following steps: (a) methanol and isobutene are reacted in a molar ratio of 2:1 to 5:1 at temperatures between 30 DEG  and 100 DEG  C.; (b) the unconverted hydrocarbons are then removed as the top product under a pressure of 2 to 10 bars from a first rectification column; (c) the bottom product from this first column is rectified in a second column under normal pressure or under a slight excess pressure of up to 2 bars at the top of the column, the bottom product of this rectification is recycled to reaction zone (a), if necessary, after separating off a portion of the tertiary butanol formed and the C8-olefins; and (d) the distillate from this second column is rectified in a third rectification column under a pressure of 5 to 30 bars, the distillate thus obtained is recycled into the feed to the second column and pure methyl tertiary butyl ether is withdrawn from the bottom of the third column.
Patent GB-2043041-A (GB)
Title: Silica gel
IPC: C01B33/158
Filed: 1979-12-21
Abstract: Silica gel is produced by a process of precipitation, gelling, washing and drying wherein both washing and drying is effected in a series of tanks containing the hydrogel by passing the washing solution or drying agent therethrough in cascade; during washing the pH of the hydrogel is brought to the range 1.0 to 3.5 and when this level is reached in one tank the supply of fresh washing solution is switched to the next tank downstream thereof; drying is effected by a similar sequence.
Patent GB-2040698-A (GB)
Title: Stretcher
IPC: A63B23/12
Filed: 1978-10-03
Abstract: The stretcher comprises two actuating bars (17, 18) and two arms (1, 2) hinged one to the other, each arm having hooking means (12), elastic drawback means (11) on each side of the hinge, the actuating bars being fixed at one end of each bar. <IMAGE>
Patent GB-2042135-A (GB)
Title: Hydraulic control valves
IPC: F15B13/043
Filed: 1980-02-04
Abstract: A hydraulic control valve for controlling a load (6) in the form of a hydraulic piston-cylinder unit comprises a control spool (2) and an associated magnetically-operable pilot control valve (24). The spool (2) is held solely by the circulation pressure against the force of a spring (3) in a free neutral position which permits a flow of oil, when the pilot control valve (24) is not actuated. When the pilot control valve (24) is actuated, the spool (2) is put by the pressure of a pump (19) into a hydraulic equilibrium condition and is moved only by the force of the spring (3) into a position for stopping the free flow of oil and passing the pump pressure to the load (6). <IMAGE>
Patent GB-2043463-A (GB)
Title: Board game with rotatable members
IPC: A63F9/30
Filed: 1980-02-22
Abstract: Each of several towers includes up to six coaxial members 12 which are each rotatably attached to a central upright, and include a plurality of radial arms 13 to which playing-pieces are attached. When playing-pieces on adjoining towers are located adjacent to each other, a "capture" may occur. There are 54 differently-coloured playing pieces of varying score valves. A removable screen 18 prevents a player from seeing the towers of the other players. <IMAGE>
Patent GB-2046984-A (GB)
Title: Gas lasers
IPC: H01S3/0971
Filed: 1980-03-27
Abstract: A gas discharge laser has the lasing gas ionised by ultra-violet light produced by a separate electric discharge in a region separated from the main discharge region 1, the separated ionising discharge preventing the generation of inhomogeneities in the lasing medium. The lasing gas is common to the two regions which are connected optically by means of a window made of a plastics film 7, the window being replaced when its transparency to ultra-violet light deteriorates. A construction is described in which the window is in the form of a strip which can be wound from one spool 22 to another. <IMAGE>
Patent GB-2073964-A (GB)
Title: Switching circuit for battery charger
IPC: H02H11/00
Filed: 1980-04-02
Abstract: A switching circuit for selectively connecting a battery charging circuit 26 to a 110V or a 240V mains supply. An input terminal 12 is connected to one end of the primary winding of a transformer 21 and a terminal 10 is normally connected by the contactor of a relay 18 to the other end of the primary winding. When the coil 18e of the relay 18 is energised the terminal 10 is connected to an intermediate tapping of the primary winding. The coil 18e is included in a control circuit which is arranged to energise the coil 18e when the terminals 10, 12 are connected to a 110V supply. When the terminals 10, 12 are connected to a 240V supply, the coil 18e is not energised a delay circuit R4, C4 preventing energization of the coil as the mains supply rises through 110V. The secondary winding is connected to the switching circuit 26. <IMAGE>