baber/WOPTO huggingface dataset:
Patent GB-1464183-A (GB)
Title: Method of producing organopolysiloxanes containing sulphonic acid groups
IPC: C07F7/08
Filed: 1974-06-20
Abstract: 1464183 Organopolysiloxanes containing sulphonic acid groups TH GOLDSCHMIDT AG 20 June 1974 [22 June 1973] 27522/74 Headings C3T C3S and C3R An equilibrated mixture of organopolysiloxanes containing silicon-bonded organosulphonic acid groups is prepared by reacting at least one halosilane which may contain from 1 to 3 organic radicals with an amount of water insufficient to split off all the halogen atoms and with an organosulphonic acid in an amount of 0À005-1 val./mole of silane where val. is the number of moles of acid divided by the number of sulphonic groups in the acid. The reaction may be carried out in 2 stages, the first stage comprising the partial hydrolysis and the second stage comprising the reaction with equilibration with the organosulphonic acid. The organosulphonic acid may have the formula R<SP>1</SP>SO 3 H where R<SP>1</SP> is an alkyl, aryl or alkaryl radical or it may be a disulphonic acid which joins together the polysiloxane blocks inter- or intra-molecularly, e.g. naphthalene disulphonic acid, 4,4<SP>1</SP>-diphenyl disulphonic acid and α,#-alkanedisulphonic acids. The halosilanes may be mono-, di-, tri- and tetrafunctional halosilanes, e.g. R<SP>3</SP>SiX 3 , R<SP>3</SP> 2 SiX 2 , SiX 4  and R<SP>3</SP> 3 SiX. The compounds produced may be represented by the mean formula where b = 0-50, a is so selected that there are 2-100 Si atoms in the average molecule, R<SP>3</SP> is an organic radical, X is a halogen atom or the radical R<SP>1</SP>SO 3 -, at least 3% of the X radicals being R<SP>1</SP>SO 3 - radicals. In Examples 1, 2 and 4 dimethyldichlorosilane is partially hydrolysed to produce a siloxane mixture containing about 50% cyclic polydimethylsiloxanes of the average formula which is then reacted with dodecylbenzenesulphonic acid, p-toluene sulphonic acid or methane sulphonic acid. In Example 5 a linear siloxane of the formula is equilibrated with methane sulphonic acid and the product obtained is reacted with a polyether monool obtained by the addition of propylene oxide to n-butanol. The resulting polysiloxane-polyether copolymer is used as a foam stabilizer in polyether-polyurethane foam formulations. In Example 3 a mixture of organopolysiloxanes of the average formula wherein R<SP>3</SP> =-(CH 2 ) 3 Cl (12À5%), and CH 3  (85%) in the structures -(CH 3 ) 2 SiO-, and produced from the corresponding silanes by partial hydrolysis, is equilibrated with ethane sulphonic acid. The product is reacted with a polyethermonool, produced by the addition of propylene oxide and ethylene oxide to nbutanol, and isopropanol. The product can be used as a polyether-polyurethane foam stabilizer.
Patent GB-1223392-A (GB)
Title: Improvements in or relating to mechanical aerators
IPC: C02F3/16
Filed: 1969-05-30
Abstract: 1,223,392. Mining. BIRD MACHINE CO. 30 May, 1969 [27 June, 1968], No. 27562/69. Heading B1C. A rotatable surface aerator has an impeller with a stationary or rotatable container which may be a cone 10, the flow into which is valve controlled, enabling the effective liquid level in which the aerator operates to be varied so that the degree of aeration is adjustable which predetermined limits without varying the speed or height of the aerator or level of the whole body of liquid. As shown in Fig. 1 the flow control is a butterfly valve 36 positioned in a central portion 26 (which is square to reduce vortexing) of the uptake tube 22. In the modification of Fig. 3 which has a short cylindrical uptake tube 70 and may be supported by a float (not depicted) the valve has sector-shaped vanes pivoting about their axes of symmetry (see Fig. 4, not shown); such vanes resist vortexing increasingly as they approach the fully open position in which they lie in substantially vertical planes while at small openings they tend to induce vortexing, which adds to the level reducing action. In another embodiment (see Fig. 5, not shown) there are three auxiliary inlets (110, 112, 114) spaced along the uptake tube, which are successively uncovered by apertures (120, 122, 124) in a sliding plate (116). Alternatively the apertures may be provided in a rotatable sleeve, or there may be individual closure plates.
Patent GB-537258-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25B39/02
Filed: 1939-10-10
Abstract: 537,258. Refrigerating. HOOVER, Ltd. Oct. 10, 1939, Nos. 27590 and 27591. Convention dates, Jan. 25 and June 17. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 11, 1940.] [Class 29] Absorption systems. An evaporator arranged for freezing deep and shallow ice trays and for cooling the storage space of a cabinet comprises parallel horizontal sinuous pipe stretches L<3>, L<2>, L<1>, Fig. 1, which may be enclosed in a heat insulated receptacle for the ice trays, and connecting stretches L<4>, L<5>, L<6> part of which are set in a vertical plane spaced from the main part of the coils and .are fitted with a plate M serving to cool the cabinet atmosphere. The invention is particularly adapted to inert gas absorption systems in which the stream of inert gas circulated by a fan F from the absorber A propels the liquid through the evaporator as described in Specification 504,374. The, liquid refrigerant is supplied from the condenser C. through a seal pipe C<1> to the lowest part of the evaporator, to which also the inert gas flows from the gas interchanger G. The connecting stretches are preferably shaped as shown to provide two riser portions L<5>, L<6> and two stages for the action of the inert gas in lifting liquid from one level to the next, as' described in Specification 536,971.' Air-cooling plates R, Fig. 3, with condensation gutters R<1> may be fitted to the side portions of the coils, and the outlet pipe of the top coil may be enlarged and fitted with air-cooling fins. A storage receptacle U; may be placed on the top coil above the icemaking chamber.
Patent GB-1522570-A (GB)
Title: Quick-break electric switch
IPC: H01H3/00
Filed: 1977-07-01
Abstract: 1522570 Snap-action switches LA TELEMECANIQUE ELECTRIQUE 1 July 1977 [10 Aug 1976] 27603/77 Heading H1N In a snap action switch in which a contact bridge 7, Fig. 1, is moved parallel to itself between contact pairs 4, 5 under the force of a pair of over-centre springs 15, 15<SP>1</SP> acting at its ends, the other end of each spring 15, 15<SP>1</SP> is connected to one of a pair of auxiliary levers 13, 13<SP>1</SP> which have noses 27 engageable with the contact bridge 7 to cause positive opening in the event of spring failure. The levers 13, 13<SP>1</SP> are moved through rack and pinion connections 16, 17 and pivot points 12 are arranged in the proximity of the spring connections to the contact bridge 7 so that the force on each springs 15, 15<SP>1</SP> is maintained substantially constant. An alternative arrangement using tension coil springs is described.
Patent GB-974421-A (GB)
Title: Improvements in or relating to valve guide oil seals
Inventor: SCHOFIELD DOUGLAS
IPC: F16J15/56
Filed: 1961-07-31
Abstract: 974,421. Oil seals. HEPWORTH & GRANDAGE Ltd. July 31, 1962 [July 31, 1961], No. 27713/61. Heading F2B. An oil seal for a valve guide 6 comprises a rubber &c. sleeve 1 which fits tightly over the guide and carries at its free end 1a a collar 2 of polytetrafluorethylene which sealingly engages the valve stem 3. The end la of the sleeve engages a groove 4 in the collar 2 and an internal flange 5 is formed at the other end of the sleeve. The flange 5 may be omitted or replaced by an external flange. In Fig. 5, the sleeve is reinforced where it grips the guide 6 by a metal sleeve 10. In another modification, Fig. 7 (not shown), the sleeve has an internal rib engaging a groove in the guide and the collar has an external rib engaging a groove in the sleeve.
Patent GB-1439915-A (GB)
Title: Check digit generation verification apparatus
IPC: G06K5/00
Filed: 1972-06-14
Abstract: 1439915 Checking data L L GOLDBERG 14 June 1973 [14 June 1972] 27806/72 Heading G4A The digits of a multi digit identity number, e.g. an account number, including a check digit in a predetermined position and representing the remainder of a weighted sum of the other digits modulo M (or the complement of this remainder) are checked by reading out from a read only store 16 (Fig. 1), for each digit applied, a number which depends on the digit position, the digit and the modulus M, this number being added modulo M to previously read out numbers with the result being held in a store 23. At the end of the operation the contents of this store should correspond to the check digit, an alarm being given in the event of error. In the embodiment of Fig. 1 digits entered on keyboard 11 are encoded to binary form and applied to the read only store 16 to read out to adder 19 for addition to previously processed bits a remainder signal which is the modulo 11 remainder of the digit multiplied by the digit position. If the cumulative remainder of the first seven digits is used as the eighth or check digit the read only store is designed to read out in response to the check digit its complement, which when added to the contents of store 23 should give a result of zero, a lamp 28 or buzzer being actuated if the final stored digit has a different value. If the eighth digit is the complement of the cumulative remainder of the first seven digits the actual digit is read out from the read only store. The apparatus may be used to generate the check digit by reading out the contents of the store 23 after seven digits have been entered and processed. In a modification (Fig. 4, not shown) in which the number consists of three digits representing for example the branch of a store, seven digits representing a customer's account number and a two digit check number, the digits are fed to the read only store via a shift register (35). Multiplication is performed modulo 97 and the multipliers for the digits are 34, 81, 76, 27, 90, 9, 40, 3, 10 and 1 respectively. The first three digits (representing the branch of the store) are fed back into the shift register so that for subsequent account numbers at the same branch only the identity check digits for the customer are keyed in.
Patent GB-401097-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/045
Filed: 1932-10-07
Abstract: 401,097. Fusible cut-outs. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitats - Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 7, 1932, No. 27985. Convention date, Oct. 7, 1931. [Class 38 (i).] The arc formed by the rupture of a fuse is extinguished by the production of an electrostatic field transverse to the arc, the equipotential surfaces in such a field coinciding with the path of the arc. A cartridge a carries strips d, d<1> one attached to each cap b, b<1> so as to take up the opposite potentials when the fuses c melt. Inturned projections e, e<1> concentrate the transverse field at the centre of length of the arc.
Patent GB-512368-A (GB)
Title: Process and apparatus for the coking of pitch
IPC: C10B55/00
Filed: 1938-09-26
Abstract: 512,368. Materials for making coke. NIEDERSCHLESISCHE BERGBAU-AKT.- GES. Sept. 26, 1938, Nos. 28033 and 28034. Convention dates, Sept. 24, 1937, and July 13, 1938. [Classes 51 (ii), 55 (i) and 55 (ii)] In the coking of pitch in a vertical retort externally heated in zones, the liquid pitch layer occupies more than one-third of the height of the heated retort. The pitch layer may extend to two-thirds of the height of the heated retort and preferably to one-half. A suitable retort 1 is heated by a furnace 3 subdivided into four zones each of which is provided with a burner 4 and combustion-gas offtake 5. Dampers 7 control the flow of the heating gases. The heating temperature ranges in the upper, middle and, lower parts of the retort, comprise up to 700‹C., 700-900‹C., and 1000-1100‹C. respectively. The retort is initially partly filled with col e on to which the molten pitch is run; the pores of the upper part of the coke layer are filled with the pitch to form a seal. The latter may be formed by first introducing on to the glowing coke a material which softens without liquefying on heating, such as caking coal, oxidized pitch of softening point above 300‹C., or a mixture of pitch with powdered pitch coke, sawdust, peat or lignite. The pitch may be fed into the retort in granular or molten condition and continuously or in batches. A loosening poker is provided between the discharge turnstile and the cooling zone 15 of the retort. A chamber 9 provided with foam-destroying baffles 10 arranged between the feed hopper and the retort acts as a reflux condenser, the gases escaping therefrom through a pipe 13. U.S.A. Specification 1,605,378 is referred to. The Specifications as open to inspection under Sect. 91, refers also to a liquid pitch layer occupying more than one-tenth of the height of the heated retort. This subject-matter does not appear in the Specification as accepted
Patent GB-804772-A (GB)
Title: Electrical wiring system
Inventor: HOSKIN PETER BERTRAM
IPC: H01B7/08
Filed: 1955-10-03
Abstract: 804,772. Installation wiring arrangements. SAUNDERS-ROE, Ltd. Jan. 3, 1957 [Oct. 3, 1955], No. 128133/55. Class 38 (4). [Also in Group XXXVI] An electrical supply installation for aircraft, providing a multiplicity of individual circuits radiating from at least one central point, comprises at least one flexible insulating strip 11, Fig. 2, having formed on one surface by a printed circuit technique, a number of flat longitudinally-extending conductors 12 spaced from each other, and provided with connectors at each end some of the conductors differing in area. The combination may be used flat, with a further insulated covering sheet, or tightly rolled to form a tube, which may be screened. A junction-box for the conductors comprises a number of sheets of insulating material 17, Fig. 6, fixed and spaced vertically in a box 15, each having imprinted concentric conductors 18. The conductors 12 are attached to the conductors 18 by bolts or rivets 26. The combination 11, 12 is held by means of clamping bars 22, 23. Circular cables 16 may also be attached to conductors 18 by means of terminals 28. Other types of connecting arrangements are also described.
Patent GB-1013074-A (GB)
Title: Air cleaners
IPC: F02M35/026
Filed: 1964-07-08
Abstract: 1,013,074. Air-filter. FORD MOTOR CO. Ltd. July 8, 1964 [July 19, 1963], No. 28241/64. Heading BIT. An air-filter, for an I.C. engine carburetter, comprises an oil reservoir 21 connected to the air passage (see arrows) by a restricted passage 24, 30, through which oil is drawn by the air flow and deposited on the filter 36. The housing is in two parts 17, 26, clamped on to the carburetter intake 12 by nut 16, part 17 comprising concentric annular troughs 21, 22, and part 26 comprising filter 36 and pressed projections 38 which abut port 17 to form the restricted passage. Trough 22 retains some oil drawn from trough 21, and excess oil drains from filter 36 through apertures 29 or 23.
Patent GB-959562-A (GB)
Title: Improvements in or relating to apparatus for warning aircraft of ground obstacles
Inventor: VANKREVELEN EDWARD RUSSELL
IPC: G01S13/935
Filed: 1960-08-15
Abstract: 959,562. Pulse radar. LITTON SYSTEMS Inc. Aug. 15, 1960, No. 28258/60. Heading H4D. An electric circuit arrangement for use with an airborne radar comprises means for producing from a received radar signal having a " shadow " portion therein a signal indicative of the length of the shadow portion within a predetermined segment of the received radar signal corresponding to a limited extent of the terrain commencing at a pre-selected range from the radar. In the preferred embodiment, Fig. 5, the video output of the conventional airborne pulse radar, Fig. 9, A, includes echoes 122, 124, 126 from hills and minimum portions 128, 130, 132 corresponding in duration to the " hill shadows " slicer 86 produces from that signal a signal, Fig. 9, B, which appears as shown in Fig. 9C, at the output cf amplifier 92. A gate generator 146 comprises a phantastron circuit to provide a pulse 230, Fig. 9F, of switch-selectable duration which in turn provides a range gate pulse 234, Fig. 9I, from a generator 148 of further switch-selectable duration and commencing at the end of pulse 230; generator 148 is a similar phantastron circuit. The outputs of generator 146 and amplifier 92 are applied to a diode AND circuit 112, and of generator 148 and amplifier 92 to a diode AND circuit 110; circuit 112 output eventually provides for a " short range " alarm 312 and circuit 110 output from " long range " alarm 309. Long and short range alarms, Figs. 5 and 9. Shadow pulse 144, Fig. 9C, is integrated by a resistance-capacitance network 236 to produce a D.C. voltage, Fig. 9M, which is fed to a voltage comparator 252 comprising a D.C.- connected differential amplifier having its second input connected to a switch-selectable D.C. reference voltage 277. The D.C. voltage magnitude from integrator 236 depends on shadow duration and when it exceeds the selected reference voltage a relay 268 is actuated. Relay 288 actuation is similar, Fig. 9L (not shown). Circuits 290, 306 are inserted to maintain alarm lamps 309, 312 when the radar aerial is scanning. Arrangements are included whereby only echoes arising from a sector ahead of the aircraft are utilized for alarm purposes; these arrangements incorporate a relay 304. The output of transformer 318 is set to be zero when the radar aerial direction corresponds to the drift angle. P.P.I. display, Figs. 4 and 5. Additional data is presented on the conventional P.P.I. display; generators 352 and 370, Fig. 5, produce lines 71, Fig. 4, showing dangerous alternative courses and the cathode-ray tube beam is enhanced 74, Fig. 4, over the sector ahead of the aircraft. Circuits of the units of Fig. 5 which lie outside conventional radar 78 are described in detail with reference to Figs. 6 and 7 (neither shown). Specification 959,021 is referred to.
Patent GB-209831-A (GB)
Title: Improvements in or relating to the earthing of electrical apparatus
IPC: H01R13/648
Filed: 1922-10-18
Abstract: 209,831. Williams, A. W., and Rowley, F. W. Oct. 18, 1922. Protective arrangements; earthing.-In the protection of electrical apparatus, for example portable coal-cutting machines, by earthing the switch casing and the frame of the motor or machine, the main switch can be closed and maintained closed only when a trip device, energized by a current other than the working current and located in the earth circuit, is operative. As shown in Fig. 1, the switch a is connected with the machine b by an armoured multicore cable c' through plug-and-socket connections. One of the cores g constitutes an earthing lead and is connected through the plug-and-socket at one end to the frame of the machine at k and, at the other end, to the frame of the switch at o through the trip coil m and through the secondary n of a low-tension transformer the primary of which is connected across the supply through the auxiliary switch r. If the earthing connection becomes unsound while the main switch is closed, the reduced current in the coil n allows the switch to open. If the connection remains unsound the switch cannot be again closed. If the voltage of the supply falls off owing to fault &c., the switch cannot be closed if open, and open if closed. The last connection to be made and the fuse to be broken in the plug and socket couplings is the earth connection and, in consequence, the switch cannot be closed until the couplings are fully home, and, if the coupling is disconnected, the earth circuit of the trip coil is broken first, so that the supply circuit is interrupted at the switch and not at the plug and socket contacts. An entirely separate local source of suppy, for example a battery, may be provided for the earthing 0 circuit.
Patent GB-1037099-A (GB)
Title: Pivoting fishing reel
IPC: A01K89/06
Filed: 1965-09-28
Abstract: 1,037,099. Fishing reels. E. RANDALL. Sept. 28, 1965 [July 9, 1964], No. 28308/64. Heading A1A. A fishing reel comprises a spool having a support which is rotatable through 180 degrees with respect to a bracket for attaching the reel to a rod. It is stated that the spool can thus be held in positions suitable for use by a right- or left-handed operator and also can be held with its axis parallel to the rod for casting. In the winding-in position one end of the spool is supported in a bearing casing which can be pivoted away from the spool in the casting position.
Patent GB-666754-A (GB)
Title: Improvements in surface grinding and polishing machines
IPC: B24B41/047
Filed: 1949-11-04
Abstract: 666,754. Surface grinding. WETTERN, E. F., and SPEED SURFACERS, Ltd. Nov. 2, 1950 [Nov. 4, 1949], No. 28311/49. Class 60. In a surface grinding machine for the treatment of granite, marble, glass and similar materials and of the kind having a radial arm x to support a series of driven satellite cutter blocks 45 mounted on a head and at equal radii from a driving shaft 2, the head is mounted with spherical bearings upon a spherical boss on the shaft and is provided with clearances above the bearings to allow the head to oscillate and align the cutters with the workpiece surface. The head may be raised or lowered with respect to the arm x by means of levers 13 connected to trunnions 12 on a cover 10 freely mounted on the shaft 2 between thrust bearings 9 and 24. The levers have a handle 14 by means of which the head can be manipulated over the surface of the work and are pivotally supported from the radially mobile arm x by links 18, an adjustable counterweight 20 being provided. The shaft 2, which is axially displaceable in a bearing 1, is slidably keyed to a driving pulley 3 and at its lower end is formed with a spherical portion 50 and a driving dog plate 51 of rectangular shape to engage a corresponding recess in a member 52 recessed to a rotatable part 34 of the head. This member 52 and a split cup ring 53 form the spherical bearings which permit the head to oscillate. The cutters 45 are secured by a mastic composition 46 and holding blocks 44 to the screw-threaded ends of inclined shafts 37 which are driven by pinions 7 in engagement with a rotationary spur ring 31 which is supported on ball and roller' bearings from the rotating part 34 of the head. The spur ring is secured by bolts 29 to a cover plate 17 connected by springs with the cover 10. A resilient sealing ring 26 is interposed between the covers 10 and 17. Fluid supplied through a bore in the shaft 2 is distributed to the cutters by a plate 55 secured to the member 52.