baber/WOPTO huggingface dataset:
Patent GB-851323-A (GB)
Title: Axial-flow compressors and turbines
IPC: F01D11/08
Filed: 1958-10-22
Abstract: 851,323. Turbines and compressors. GENERAL MOTORS CORPORATION. Oct. 22, 1958 [Nov. 8, 1957], No. 33756/58. Classes 110 (1) and 110 (3). An axial flow compressor or turbine comprises a fixed shroud ring, opposite each row of rotor blades 18, which carries on its radially inner surface a metal ring of abradable clearance material 34 having a pattern of ridges thereon. The shroud rings may be of different type as shown in Fig. 1, where the first stage shroud 31 is integral with the adjacent stator vane assembly 25, the second stage shroud 32 is independent of the adjacent stator vane assembly and the third stage where the casing 22 itself provides the shroud 33. The clearance material 34 is of metal such as stainless steel, nickel or silver alloys, and its surface is providedwith a, criss-cross pattern of ridges 40 which provide cavities 38 in which the metal, abraded by the blade tips, can collect. The clearance material ring 34 which may be in segments, is riveted to the shroud ring 33 by rivets 42 recessed below the surface to avoid abrasion by the blade tips. Sometimes the criss-cross pattern of the clearance ring 34 causes excessive local turbulence and can be eliminated by filling the cavities of the pattern with vitreous enamel.
Patent GB-1469388-A (GB)
Title: Method and plant for removing vapours and aerosols from gases
IPC: C10J3/02
Filed: 1975-08-14
Abstract: 1469388 Purifying combustible gas DR C OTTO & COMP GmbH 14 Aug 1975 [5 Oct 1974] 33844/75 Heading C5E Gas produced by the high-temperature gasification of solid fuel or a mixture of solid and liquid fuel is passed through a dust collector, cooled in a waste-heat boiler and passed into an adsorption chamber in which harmful substances in the form of vapours or aerosols in the gas are removed by adsorption on flue coke which has been deposited in the dust collector and then cooled; the flue coke is separated from the gas leaving the adsorption chamber and recycled to the gasification zone. Coal is gasified with oxygen, steam and/or carbon dioxide 18 to produce a molten slag residue 19 and a carbon monoxide and hydrogen-containing gas 17. Flue coke is separated from the hot gas 17 at 12, cooled to 100-300 C. at 13 and passed into the adsorption chamber 15. The hot gas from the dust collector 12 is cooled at 14 to approximately 250 C. and passed into the chamber 15. Impurities in the form of vapours or aerosols in the gas are adsorbed on the cooled flue coke. The flue coke is separated at 16 from the gas leaving the chamber 15 and recycled to the gasifier 11.
Patent GB-293846-A (GB)
Title: Improvements in and relating to water control mechanism for concrete mixers
IPC: B28C7/12
Filed: 1927-12-14
Abstract: 293,846. Koehring Co., (Assignees of Webb, G. E.). July 14, 1927, [Convention date]. Rotary mixers.-In a concrete mixing-machine means are provided for preventing the operation of the charging-devices for the dry materials unless an appropriate quantity of water is available in the supply tank. The dry materials are fed by a pivoted skip and the water is supplied by a main pipe to a tank of prescribed capacity discharging into the drum. The skip is hoisted by a winding-drum controlled by a clutch the lever of which is connected to a lever 4, Fig. 2, fitted with an abutment 6 engaged by a stop 7 on a bracket 8 on the skip when the latter is in its lowered position to move the lever 4 to the " off " position of the clutch lever. As shown, the lever 4 is then in engagement with a pivoted catch 10 operated by a rod 19 connected with a spring-influenced diaphragm 14 the top of which is subjected to the pressure in a branch pipe 15 of the main which supplies the water tank. While the tank is being supplied the pressure on the diaphragm is insufficient to depress the diaphragm to release the catch 10. When the tank is filled, the pressure on the diaphragm rises and the catch is depressed, the clutch lever being then free for manual operation.
Patent GB-1148193-A (GB)
Title: Improvements in or relating to wave guide switches
IPC: G01S7/03
Filed: 1966-07-28
Abstract: 1,148,193. Waveguide switches. WESTERN ELECTRIC CO. Inc. 28 July, 1966 [27 Aug., 1965], No. 33944/66. Heading H1W. The attenuation in a waveguide is controlled by one or more resonant conductive loops 1 each coupled by transmission lines 2, 3 and 4, 5 to diode switching elements 6, 7 controlled by a source of bias potential 19. The loops extend into the waveguide which is not shown. The length of transmission line betwen the diodes and the loop is normally three quarter-wavelengths so that an impedance inverse to that of the diodes appears across the terminals of the loop. The transmission line is terminated in an adjustable open or short-circuited stub which forms an anti-resonant circuit with the reactive impedances of the diodes. All three sections 2, 3; 4, 5 and 16, 17 of the transmission line may consist of coaxial line but, in the embodiment shown, the central section 4, 5 consists of a length of symmetrical strip line. It is shown in the Specification that the coupling between the guided wave and the loop 1 depends upon the angle of inclination of the loop to a plane parallel to the broad walls of the waveguide. This coupling increases as the angle increases. Further, it is shown that if a number of loops are spaced along the axis of the waveguide at intervals of three quarterwavelengths, it is possible to obtain a pole of attenuation, i.e. the arrangement may provide a switch.
Patent GB-606583-A (GB)
Title: Improvements in or relating to radio direction finding systems
IPC: G01S1/02
Filed: 1945-12-14
Abstract: 606,583. Radio direction-finding. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., KEMP, R. J., and O'NEILL, R. F. Dec. 14, 1945, No. 33963. [Class 40 (vii)] In a radio direction-finding system of the type wherein the indication is given at a place remote from the directional aerial system, the signals at the direction-finding station proper (which may be of the continuously rotating or oscillating type) are selected by a plurality of frequency selective circuits, each of which delivers an associated intermediate frequency signal, these signals being all transmitted to the indicating station on a radio-frequency carrier. Synchronizing pulses are produced at predetermined positions in the rotation or oscillation at the direction-finding station and modulate a further intermediate frequency signal which is transmitted with the others, the pulses then being used at the receiver to synchronize the time-bases of the indicators. In the embodiment shown, the aerial system comprises two mutually perpendicular Adcock aerials coupled to a goniometer with a continuously rotating search coil SC, the output from which is fed to the tuned radio-frequency amplifiers RF1 ... RF4 covering the frequency bands 3-7 mc/s., 7-11 mc/s., 11-15 mc/s., 15-19 mc/s. respectively. The tuning of the amplifiers is controlled by the motors M1 ... M4 which may operate automatically or be remotely controlled by a separate transmission from the indicating station modulated by four different audio-frequencies each controlling one of the tuning motors. The output of each amplifier is heterodyned and amplified in the circuits IF1 ... IF4 to deliver four different constant intermediate frequencies. To the search coil spindle is attached two soft iron polepieces which co-operate with a fixed coil to produce two synchronizing pulses, 180 degrees apart, per revolution of the search coil. The pulses are modulated on to a fifth intermediate frequency at IF5 and are combined with the other intermediate frequencies in the modulator M which modulates the transmitter RT. At the distant receiver the signals are separated out by the filters SF1 ... SF4 tuned to the intermediate frequencies, amplified and applied to the vertical deflecting plates of cathode-ray tubes CR1 ... CR4 respectively. The synchronizing pulses are separated out by the filter PF and are employed to synchronize the time-base circuits TB1 ... TB4 which feed the horizontal plates of the cathode-ray tubes. Two traces are produced for each complete revolution of the search coil and thus each trace corresponds to 180 degrees of the revolution. The mechanically driven goniometer may be replaced by electronic arrangements for modulating in quadrature the outputs from the two Adcock aerials and for synchronizing the time-base circuits with the modulating frequency. An additional indicator system may be provided at the D.F. Station proper for monitoring or stand-by purposes.
Patent GB-618989-A (GB)
Title: Improvements relating to thermally actuated electric switches with magnetic snap action
IPC: H01H37/66
Filed: 1946-11-16
Abstract: 618,989. Switching systems for heating resistances. BICKELL, S. F. Nov. 16, 1946, Nos. 34018/46 and 26337/47. [Class 38 (iv)] [Also in Group XXXVII] In an expanding tube and rod thermal switch (see Group XXXVII), for controlling two or more heating elements, the actuating force is resiliently applied to a bridge carrying contacts at each end, and offset from the axis of symmetry of a snap-action magnet, whereby the resultant operating force acts on one side of the axis of magnetic symmetry, to rock the contact bridge and open the contacts in a predetermined order. To control high-heat and low-heat elements R3, R4 and assuming a high-heat-setting is selected, contacts 13, 30 and 12, 29, will be closed until the selected temperature is reached when the contact bridge will rock to open contacts 12, 29, disconnecting the high heat element R3 and close contacts 48, 49, energizing the low-heat element R4. If initially a low-heat is selected the contacts 13, 30 will open when the desired temperature is reached. In an alternative circuit (Fig. 4, not shown), two similar heaters are normally connected in parallel and either one or both are disconnected to control the temperature.
Patent GB-1021128-A (GB)
Title: New derivatives of asiaticoside and their process of preparation
IPC: C07H15/256
Filed: 1964-08-20
Abstract: The invention comprises a tetrahemisuccinate of asiaticoside having the empirical formula C64H94O31 and a melting point of 165-170 DEG C. and the salts of the said tetrahemisuccinate, particularly the alkali and alkaline-earth metal salts thereof, and the preparation thereof comprising reacting 1 mole of asiaticoside with more than 4 moles of succinic anhydride and, if desired, salifying the tetrahemisuccinate thus obtained.  Aqueous solutions of the products may be used as eye-washes.
Patent GB-191267-A (GB)
Title: Improvements in and relating to the manufacture of rolled glass
IPC: C03B13/02
Filed: 1921-12-17
Abstract: 191,267. Chance Bros. & Co., Ltd., and Forster, A. L. Dec. 17, 1921. Rolling.-In a process of making rolled glass in which a number of plates or sheets are rolled from one charge d of molten glass, the sheets g, while in transit between the rolling machine and the lehr, are passed into a tunnel or the like h which is adapted to maintain the plates at a sufficient temperature to keep them intact. The plates as they emerge from the rolls a, b are cut into convenient lengths, and immediately the cut is made, the moving table e is accelerated in order to carry the plates clear of the emerging glass from which they were divided. Any suitable form of rolling machine may be used and the table must be of sufficient length to receive the whole of the sheets rolled from one charge. The part of the table on which the glass rests is constructed from material of low thermal conductivity such as stone. The tunnel h is heated in any convenient manner.
Patent GB-307555-A (GB)
Title: Improvements in thermionic valve holders
IPC: H01R33/76
Filed: 1927-12-16
Abstract: 307,555. Ashley Wireless Telephone Co. (1925), Ltd., and Brooke, W. A. Dec. 16, 1927. Vacuum tubes. - A valve - holder has a socket portion B provided with sockets b<1> and mounted above a flanged annular base A by radially disposed strip-metal springs C, which are benr, to volute shape and connected at one end to the sockets and at the other end to the base at the upper ends of recesses a<2> in the flange. Rubber may be interposed between the socket portion and the base. 'The springs are secured to the base by the bolts a<1> of the terminals. Upward movement of the sockets is limited by brackets D on the base, and downward movement by engagement of a flange b<2> with the base. The socket portion and base may be formed in a single moulding and the parting cut may be made before or after assembly. In a modification the brackets engage in vertical grooves in the socket portion so as to limit its upward and angular movement.
Patent GB-481196-A (GB)
Title: Improvements in dry cells and batteries
IPC: H01M6/06
Filed: 1936-06-09
Abstract: 481,196. Batteries. MAcCALLUM, F., and REDFERN, A. H. June 9, 1936, No. 34120/35. [Class 53] A dry cell comprises a carbon electrode 6, in the form of a plate having flat surfaces on each of which is a block of depolarizer 8 surrounded by electrolyte and a zinc electrode 11 so constructed that it can be, contracted against the inner elements of the cell. As shown in Fig. 4, the carbon electrode may comprise a metal plate coated on both sides with carbonaceous material and provided with a coating of varnish or other insulating material 7 on its edges. The depolarizer blocks 8 may be provided with cavities to allow for expansion and to receive gases generated in the cell. The carbon electrode and depolarizer are enclosed in a paper or other wrapping 10 impregnated with electrolyte. The zinc electrode surrounds the wrapping 10 and is in the form of a cylinder having a gap between'the edges or having overlapping' edges. The electrode may be made from a zinc sheet which is pressed into two half-cylindrical portions 11, as shown in Fig. 4. The sheet is cut through as shown at 13, a part 12 being left to form a hinge, and a projecting lug 17 being provided to form a terminal. The parts 11 are clamped together by a rubber band 16 as shown in Figs. 1 and 2. The cell is closed at the bottom by a rubber disc 14. The top of the cell may be closed by a rubber disc 14. The top of the cell may be closed by a similar disc and the whole assembly may be sealed by a thin elastic and waterproof skin. Specifications 423,165; 442,281, [Group V], 447,974, 462,974, 459,945, 474,151, and 476,554 are referred to.
Patent GB-980083-A (GB)
Title: Material breaking cartridge for blasting and the like
IPC: F42B3/06
Filed: 1961-09-25
Abstract: 980,083. Fluid-pressure blasting devices. OLIN MATHIESON CHEMICAL CORPORATION. Sept. 25, 1961 [Oct. 11, 1960], No. 34334/61. Heading F3A. A compressed-gas blasting cartridge is adapted to discharge seqentially through exhaust ports situated at intervals along the length of the cartridge. In one embodiment, ports 94, 95 are normally closed by sleeve valves 92, 93 respectively, the valves being held in position by slidable metallic sealing rings 100, 107 and springs 105, 115. Smaller ports 120 at the forward end are closed by a piston 118 which is forced to the left by a spring 119 and closes a central orifice 116 by means of a ball valve 117. In operation, compressed gas is introduced to chamber 7 and from there the gas passes via central orifice 96 to chamber 8 and via central orifice 97 to control chamber 114. While charging, the pressures in chambers 7, 8 and 114 are substantially equal. The sealing rings 100, 107, which have modified knife edges 102, 108, form metal-to-metal seals with valves 92, 93 and have larger effective left-hand crosssectional areas so that they are urged to the right when compressed gas enters the cartridge. At a predetermined pressure ball valve 117 is unseated, the consequent gas pressure on piston 118 forcing it to the right against spring 119 to open ports 120 and rapidly reduce pressure in chamber 114. Valve 93 is now forced to the right by the pressure differential of chambers 114 and 8 and this differential is suddenly augmented when the metal-to-metal seal between ring 107 and valve 93 is broken, this occurring when shoulder 111 meets abutment 110. With the opening of ports 95 chamber 8 is effectively exhausted and the now present pressure differential of chambers 8, 7 causes similar exhaustion of the latter through ports 94. A further embodiment (Fig. 6, not shown), features three sets of ports, that nearest the work face allowing discharge first and that intermediate the other two last. A still further embodiment (Fig. 7, not shown), features two valves connected by a rod with exhaustion through those ports nearest the work-face occurring first when the feed line is vented to the atmosphere.
Patent GB-521729-A (GB)
Title: Improvements in or relating to control systems for electrical apparatus
IPC: H02H7/00
Filed: 1938-11-25
Abstract: 521,729. Protective cut-out arrangements; motor control systems. REYROLLE & CO., Ltd., A., and TIPLADY, J. Nov. 25, 1938, No. 34350. [Classes 38 (iii) and 38 (v)] Apparatus J, such as mining machinery, is connected over a trailing cable B including a pilot circuit (such as a conductor B<3> and the cable sheath used also for earthing the apparatus) to a supply switch A' of the reversing type, the control of which switch is remotely effected over the pilot circuit. The switch comprises contacts L, M controlled by coils L', M' which are respectively energized by closure of contacts F<5>, G<5> of relays F, G arranged in the pilot circuit. At the machine J, " forward " and " reverse " pushbuttons K<1>, K<2>, adapted to be retained by a series coil J<4>, are provided in series with rectifiers J', J<8>. When K<1> is closed, current flows only through relay F owing to rectifiers F<2>, G<8>, whereas when K<2> is closed current flows only through G owing to rectifiers G<2>, F', the rectifiers F<1>, G<1> being provided to absorb inductive surges and prevent sparking in explosive atmospheres. If an open circuit or high resistance occurs on the pilot circuit, the relays are both de-energized, they being of low resistance so as to respond even to slight increases in resistance. If the pilot circuit is shorted or earthed, alternate half-waves energize the two relays to close contacts F<4>, G<4> and energize a relay N which opens the circuit of both L<1> and M'. The relays have a low currentsetting so as to respond to high-resistance earths. Failure of voltage causes both relays to open their contacts and de-energization of the magnet J<4> prevents automatic restarting if the supply fails momentarily. The pilot circuit can also be opened by overload and earth-leakage devices in the power conductors. The contacts F<4>, G<4> may be arranged to close before contacts F<5>, G<5>, thus preventing simultaneous closure of both contact-sets L, M by the relays F, G but preferably the contact-sets are interlocked by a pivoted bar (not shown) so that when one set is closed the other is held open. The control switch may be of the drum type with a " start " and " run " position for each direction of operation, and the earth connection of the pilot circuit may be made by a holding-coil in one of the power leads. In the Fig., if the motor is running forwards and it is desired to reverse it, K<2> is closed, so energizing G and, as both are now energized, the supply is cut off and J<4> releases K'. Relay F now opens its contacts and N is de-energized so that, as K<2> is still closed by the operator, the motor runs in the reverse direction.
Patent GB-461934-A (GB)
Title: Improvements in and relating to variable gear ratio transmitting mechanisms
IPC: G07F15/08
Filed: 1935-12-11
Abstract: 461,934. Variable - ratio gear mechanism. WRIGHT, N., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Dec. 11, 1935, No. 34403. [Class 80 (ii)] [Also in Group XVIII] An adjustable-ratio gear mechanism, particularly for use in prepayment meters for gas or electricity for varying the fixed charge rate, comprises an intermediate wheel or pinion 1 which is given both a rotary and a longitudinal oscillating movement by gearing 35-9, including a crank 29 and oscillating quadrant 8, from a driving-motor 11. The gearing is such that the pinion 1 makes several revolutions for one of the driving motor, and the longitudinal oscillatory movement of the pinion is obtained by mounting it upon a threaded guide screw 2. The pinion engages a driven wheel 6 by means of a ratchet pawl 5 carried on an arm 4 attached to the pinion. The period during which the pawl is engaged is adjusted by the axial position of a mask drum 18, with an engaging edge 20 for the pawl, which is secured to a pinion 17 adjustable along a guide screw 12 by gearing 21 actuated by setting pointers 24, 26 co-operating with dials showing the fixed charge rate. The wheel 6 drives a shaft 7 which is geared through a pinion 16 to the commodity side of the meter differential (not shown). Backward rotation of the shaft 7 by the pawl 5 riding over the teeth of wheel 6 is prevented by another fixed pawl 36 engaging a ratchet wheel 37. In a modification, the oscillating pinion 6 is provided with an axial projection which co-operates with a fixed stop on the adjusting pinion 17, a resilient spring connection being provided for the driving link 28 so that when the oscillating pinion is arrested the link gives and provides the necessary lost motion.
Patent GB-1012499-A (GB)
Title: Improvements in or relating to field ion microscopes
Inventor: BRANDON DAVID GODFREY
IPC: H01J37/285
Filed: 1963-09-02
Abstract: 1,012,499. Heavy-ion-beam tubes. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 31, 1964 [Sept. 2, 1963], No. 34645/63. Heading H1D. In a field ion microscope having a mesh 6 on which an ion image is formed, the incident ions producing secondary electrons which pass through the mesh to form a visible image on a fluorescent screen 7, means are provided to prevent the formation of a second image as a result of secondary electrons being produced by ions which penetrate the mesh. Such means comprises a second mesh 5 to which is applied a potential of suitable sign, either to slow the ions down and prevent penetration or to accelerate the ions so that ions which do penetrate the mesh 6 are collected by the screen 7. In addition, the underside of mesh 6 is coated with a material having poor secondary emission properties. The mesh 6 may be of copper with the upper surface coated with aluminium and the lower with gold. The image gas providing the ions repelled from the fine polished tip of the specimen 1 may be helium, argon or neon leaked-into the microscope chamber at a pressure of 5.10<SP>-3</SP>torr. The specimen is mounted between glass-coated tungsten rods 2 which project from a liquid nitrogen trap 3.