baber/WOPTO huggingface dataset:
Patent GB-1034894-A (GB)
Title: Improvements in or relating to fluorocarbon separation
IPC: C07C17/386
Filed: 1964-02-06
Abstract: Tetrafluoromethylene is separated from mixtures thereof with volatile non-perfluorinated fluorocarbons which, in addition to fluorine, contain at least one element selected from hydrogen, chlorine, bromine and iodine by adding to the mixture an alcohol or phenol, ether, ketone or ester of the general formulae R1OH, R2OR3, R4COR5 and R6CO.OR7, wherein R1 to R7 are saturated aliphatic or aromatic hydrocarbon radicals, and which is liquid at the distillation conditions and then fractionally distilling the mixture.  The distillation agents preferably contain 1 to 12 carbon atoms in their molecule and the mixture to be separated may be prepared by the pyrolysis of chlorodifluoromethane or of bromodifluoromethane or by inorganic and organic fluoride arc processes known to produce tetrafluoroethylene.
Patent GB-703746-A (GB)
Title: Improvements in and relating to separator coatings for magnetic sheet materials
IPC: H01F1/18
Filed: 1952-02-27
Abstract: A composition comprises a refractory or semi-refractory powder in a watery slurry with a methyl cellulose binder.  The amount of methyl cellulose may be between 0.3 and 2 per cent. by weight of the total slurry, and the refractory material, which may be magnesia, alumina, calcined dolomite, zirconia or silica, is preferably at least 2 per cent. by weight.  The methyl cellulose can be dispersed in a portion of the water used at 80 DEG  to 90 DEG C., cooled, and the rest of the water and the refractory material added.ALSO:A method of providing magnetic sheet material with a separator coating consists in applying a refractory or semi-refractory powder in a watery slurry and a methyl cellulose binder which latter is decomposed when the thus coated sheet material is annealed thereafter.  The amount of methyl cellulose can be between 0.3 and 2 per cent. by weight of the total slurry, and the refractory material, which may be magnesia, alumina, calcined dolomite, zirconia or silica, is preferably at least 2 per cent. by weight.  The methyl cellulose can be dispersed in a portion of the water used at 80 DEG  to 90 DEG  C., cooled, and the rest of the water and the refractory material added.  The slurry can be applied thinly and dried slowly at a temperature below 150 DEG C.  When the sheet material is annealed the methyl cellulose disintegrates into volatile components.  In a modification, colloidal silica is incorporated in a slurry of magnesia or lime, and a silicate is formed at temperatures above 800 DEG  C.
Patent GB-657404-A (GB)
Title: Improvements in and relating to self-priming rotating impeller pumps
IPC: F04D5/00
Filed: 1949-02-25
Abstract: 657,404. Centrifugal pumps. WORTHINGTON-SIMPSON, Ltd., CHERRIE, C. M, and SOUTHERN, J. Feb. 25. 1949, No. 5186. [Class 110(i)] A liquid-ring pump has a vaned impeller 4 rotating in a vortex chamber formed with lateral chambers 6, 7 and a peripheral chamber 8, except in the region 9 between inlet 13 and outlet 19. At that region the chambers 6, 7, 8 are eliminated so that liquid is forced radially inwards. Outlet ports 15, 16 are positioned near the impeller hub and are separated from the chambers 6, 7, by wall portions 17. Suction and delivery branches 12, 18 are arranged in the form of a U so that liquid is retained therein when the pump has stopped. The walls 17 seal the outlet passage from the suction during the' priming operation. A bush 21, of bronze or other corrosion-resisting metal, is held in place by a cap nut 22 and a washer 23, and supports the impeller 4 which is free axially on a key 24. A seal 25, 28 and a rubbing member 26 may be similar to that described in Specification 632,957. A flange 29 may be used to secure the pump to the casing of a driving motor. The impeller shaft is overhung, having no bearing within the casing.
Patent GB-546729-A (GB)
Title: Improvements relating to the inlet valves of air or gas compressors
IPC: F04B39/10
Filed: 1941-04-23
Abstract: 546,729. Air &c. compressors. HEYWOOD COMPRESSOR CO., Ltd., HUNT, J. A., and MOREILLON. A. E. April 23, 1941, No. 5245. [Class 8 (i)] [Also in Group XXIX] An inlet valve for a compressor comprises an annular ring a of larger outside diameter than the bore of the cylinder adapted to cooperate with two annular seating surfaces f, g on either side of a ring of holes e in the cylinder head d which spigots into the cylinder bore. The valve, when open rests on an annular shoulder e around the cylinder. The inner and/or outer edges of the valve may be serrated or scalloped. The piston may have a projection i adapted to pass into the central opening in the valve and so reduce the clearance volume.
Patent GB-216209-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B75/28
Filed: 1923-02-22
Abstract: 216,209. Fell, L. F. R. Feb. 22, 1923. Two - stroke - cycle engines; driving-gear. -In an engine unit in which two or more pistons 2, 3 have a common combustion space, the cranks 4<1>, 5<1>, to which the pistons are connected are set out of phase, the resulting motion of the pistons being such that, during the exhaust period, a charge of scavenging fluid is moved as a cushion to expel the burnt gases, the scavenging fluid being subsequently c o m - pressed as part of the working charge. As shown in the Figure the crank- -shaft 5 is connected by gearing 6 to, and rotates at twice the speed of the crank-shaft 4. The crank 4<1> is from 40‹ to 45‹ in advance of the crank 5<1> at the beginning of each cycle. Air or combustible mixture, compressed in the crank-case 7, is transferred to the cylinder through piston-controlled ports 8 during the exhaust and the compression periods. Liquid fuel may be injected through a nozzle 9. The piston 2 controls the exhaust port 10. The two pistons may work in separate intercommunicating cylinders, placed side by side or two pistons such as 3 may be provided, working in cylinders at an angle to the main cylinder 1. According to a further modification the pistons 2, 3, may reciprocate at the same speed, the crank 5<1> being in advance of the crank 4<1>. Scavenging air is compressed by the underside of the piston 3 against a partition in the cylinder, a further piston, connected to and in line with the piston 3 compresses air or combustible mixture against this partition, the second charge being introduced into the cylinder towards the end of the compression period.
Patent GB-556923-A (GB)
Title: Improvements relating to radio signalling systems
IPC: H04B7/06
Filed: 1942-04-21
Abstract: 556,923. Multiplex wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. (Western Electric Co., Inc.). April 21, 1942, No. 5314. [Class 40 (v)] A multi-channel radio signalling system of the kind using directive antennae of the type in which the elevational transmission angle varies with the final carrier frequency and in which each channel comprises a single side band of a frequency modulated by the signal wave, is characterized in that the signal wave of a channel modulates a subcarrier frequency and one of the side bands is used to modulate the transmission or final carrier frequency after one or more intermediate frequency modulations, said final carrier frequency being selected as being the optimum for transmission with regard to the point of reception for the prevailing conditions. Fig. 1 shows an arrangement in which two transmitters No. 1 and No. 2 have each two signal channels A, B and C, D respectively, which are radiated to different points by corresponding directive antennae T1 and T3. In transmitter No. 1, channels A and B feed into first modulators M1, M2 to which is supplied a frequency of about 125 kc. derived by a sub-multiple generator SG from an oscillator O1 Filters F1, F2 select respectively the lower and upper side bands which are then combined together with a controlled amount of the submultiple frequency in an amplifier A1, the output from which is combined in a second modulator M5 with a harmonic of oscillator 01 of about 2500 kc. After amplification at A5, the signal is combined in a final modulator M9 which is fed with carrier frequency current selectively through a switch S1 from one of a set of oscillators 05-08 having a range of 9000 kc. to 18000 kc. After final amplification at A9 the signal is radiated at T1, which is directed towards the receiving station. The signal channels C, D are similarly passed through transmitter No. 2 the oscillator 01 with its sub-multiple and harmonic generators being common to both transmitters, while a switch S3 enables a desired one of the oscillators OS-08 to be selected. For sending two messages from each transmitter to two different points, different oscillators 05-08 will be connected to the final modulators. For sending only one signal from each transmitter using opposite side bands, the same carrier frequency can be used for both transmissions. If desired each transmitter may have two directive antennae directed to two receiving stations corresponding to the two channels. If the stations are in widely different directions a non-directive aerial may be used. In a modification, Fig. 2 (not shown), at the first modulators, the signal channels are modulated on to a series of harmonics of a single oscillator and mixed with one of the harmonics at the combining circuit amplifier before modulation by a harmonic of the oscillator 01. The subsequent stages are the same as for Fig. 1. More than two transmitters may be used.
Patent GB-690774-A (GB)
Title: Improved screw-type bottle closure cap
IPC: B65D41/04
Filed: 1951-03-05
Abstract: 690,774. Stoppers. STUDLI, H. March 5, 1951 [March 4, 1950], No. 5331/51. Class 125(iii) In a screw-type closure cap 1 hav. ing a cylindrical sealing disc 5 of resilient materia such as cork, the under-face 6 anc the peripheral face 7 of the disc are coated with a layer 8 of polyethylene the coating having the form of a cap and abutting  against the inner face 9 of the cap 1.
Patent GB-976143-A (GB)
Title: Improvements in or relating to resistance seam welding apparatus
IPC: B23K11/093
Filed: 1961-02-14
Abstract: 976,143. Welding by pressure. REGIE NATIONALE DES USINES RENAULT. Feb. 14, 1961 [Feb. 23, 1960], No. 5476/61. Heading B3R. Apparatus for roller seam resistance welding two halves 27, 28 of a workpiece, e.g. a fuel tank, comprises a table 1 adjustable relatively to the roller electrodes 3, 3<SP>1</SP>, a jig 22 on the table for supporting the work and a roller 9 in combination with a plate 21 attached perpendicular to the table, for guiding the jig, the guide roller being adjustably mounted on the table with its axis perpendicular to the table and the rotation of the roller electrodes in contact with the work causing the movement of the workpiece and jig on the table. The table 1 is vertically adjustable on a structure 7 adjustable about a pivot 6 on a base 5 and carries the roller 9 adjustable by an eccentric device towards and away from the plate 21 secured at right angles to the table. The jig comprises a rigid frame 22 having a vertical wall corresponding to the line to be welded and supported freely on the table by balls 24, castors, plastic studs &c., the jig carrying a pan 26, insulated therefrom, for carrying the two halves 27, 28 of a fuel tank. In operation with the tank in the pan and its edges 29 lightly tack welded and the jig wall between the roller 9 and the plate 21, the electrodes are engaged with the edges 29 and rotated so that the jig is caused to move and the edges 29 caused to follow their proper course. Weld timing mechanism may be provided and the roller 9 is adjustable in a slot at right angles to the axes of the welding rollers.
Patent GB-433187-A (GB)
Title: Improvements in and connected with machines for making bricks and the like
IPC: B28B1/04
Filed: 1935-02-20
Abstract: 433,187. Tamping - mechanism for moulding bricks &c. CHAPMAN, W. G., 15, Rusham Park Avenue, Egham, Surrey, and DUNNS' ENGINEERING WORKS, Ltd., 296, High Holborn, London. Feb. 20, 1935, No. 5513. [Class 87 (ii)] In tamping- mechanism for a brick &c. making machine, wherein material fed from a hopper 5 into moulds on a conveyer 4 is tamped by tampers 3 connected to the ends of a pivoted lever 6 which is oscillated by a pair of eccentrics 18, 19 and has one arm formed with a joint 12, a mechanical connection is provided between the eccentrics and the two ends of the lever. A second lever 7 may be provided parallel and similar to the first. The eccentrics rotate in collars attached to links 16, 17 connected to the lever 6. A trowelling member 20 is fixed to the pivot 9 of the lever 7 and is connected by a link 25 to a similar member 22 mounted on a shaft 24 the height of which may be adjusted by an eccentric 23. Specification 423,473 is referred to.
Patent GB-289990-A (GB)
Title: An improved alloy steel
IPC: C22C38/24
Filed: 1927-02-28
Abstract: 289,990. Rogers, F. H. (Remy-Stahlwerke Stahlschmidt & Co. Ges.). Feb. 28, 1927. Alloys.-An alloy steel for the manufacture of high speed tools contains substantially 17 per cent of tungsten, 5 per cent of chromium, 1.5 per cent of vanadium, 7 per cent of tantalum, and 0.9 per cent of carbon, with or without 2 per cent of molybdenum.
Patent GB-215483-A (GB)
Title: Improvements in and relating to temperature operated electric relays
IPC: H05B3/00
Filed: 1923-02-26
Abstract: 215,483. British Thomson-Houston Co., Ltd., (International General Electric Co.). Feb. 26, 1923. Thermostats. - A relay 6 for controlling the supply of electricity to an oven 1 or for similar purposes is operated through the medium of a vacuum-tube amplifier by the E.M.F. generated in a theremo-electric couple 2, 3 subject to the temperature of the oven or the like. In the arrangement shown an alternating-current relay 6 is connected in circuit with a battery 15 to the filament 11 and plate 14 of the amplifier and is @naffected by direct current passing through it, the filament 11 is heated from a local circuit including a battery 12 and rheostat 13, while the thermo-couple 2, 3 is connected in circuit to the filament 11 and grid 10 with an interposed interrupter 4, which transmits the voltage set up by the thermo-couple to the grid in the form of pulsations of a frequency to which the relay 6 responds. At a certain maximum temperature of the oven 1 the alternating current in the relay circuit is of sufficient strength to open the switch 18 and cut off the supply of electricity from the generator 16 to the heater 17, the heating circuit being reestablished as the temperature falls.
Patent GB-581832-A (GB)
Title: Improvements in the speed control of electric motors, rotary converters and the like
IPC: H02P7/06
Filed: 1945-03-06
Abstract: .581,832. Automatic control systems for motors, &c. SCOTT, W. J., and DAVIES, T. J. March 6, 1945, No. 5620. [Class 38 (iv)] Speed.-Means for controlling the speed of an electric motor, rotary converter or like machine having a shunt field, comprises an additional cumulative shunt field energized by closure of a governor-operated switch when the speed of the machine exceeds a predetermined value. Fig. 1 shows two spring strips 3 and 4 connected by bob-weights 5, one strip 3 being fixed to the motor shaft 2 and the other strip 4 fixed to a shaft 6,'which latter is free to rotate within a recess on a rod 8 attached to one of two switch arms 9, 11. Above the predetermined speed the switch 9, 10 closes, completing the circuit of field 18 (Fig. 2), and reducing the speed of motor 1. The speed determining means comprises a spring 12 adjusted for tension by a cup 13 and thread 14. Means for reducing sparking at the switch contacts is described.
Patent GB-624036-A (GB)
Title: Improvements relating to electrical computing instruments
IPC: G06G7/163
Filed: 1947-02-27
Abstract: 624,036. Calculating-apparatus. FERRANTI, Ltd., and TAYLOR, M. K. Feb.. 27, 1947, No. 5666. [Class 106 (i)] [Also in Group XXXVIII] Apparatus for determining the value of z of an equation wx=yz, where w, x and y are known, consists of means for applying A.C. voltages proportional to w, z, y and a controllable voltage in appropriate pairs alternately in opposite senses through amplifiers to a motor responsive to the difference in value of the combined voltages to correspondingly vary the value of the controllable voltage, thus making the latter proportional to z. A.C. voltages from two potentiometers 1, 2, adjusted to represent the known factors w and x respectively, are connected via changeover switches 11 and 19, two valves 13, 21 and two transformers 14, 22 to a crystal computing instrument 26 of the type described in Specification 621,665, [Group XXXVIII], whereby the output, proportional to the product wx, is amplified and rectified to provide the field energizing current for a D.C. motor 34. Two further potentiometers 3, 4, of which the former is adjusted to represent y, and the latter is controlled by motor 34, are connected via change-over switches 11, 19 and subsequent apparatus as before to provide the field energizing current for motor 34 in the opposite sense. The change-over switches 11, 19 and 36 are operated periodically by a relay 42 controlled by a clock 43 to make the motor 34 adjust the slides of potentiometer 4 to give equality between the product of the voltages obtained from potentiometers 1, 2 and that obtained from potentiometers 3, 4. The value of z may be obtained from the means position of the slides of potentiometer 4. The potentiometers 1 to 4 may be replaced by selsyns. The relay and clock 42, 43 may be replaced by a motor-driven commutator, or by some form of electronic switching. The reversing motor may be permanently energized, with reversible armature current supply, or a two-phase eddycurrent motor.
Patent GB-987884-A (GB)
Title: Gamma-ray irradiation apparatus
Inventor: BOZOKI LASZLO
IPC: A61N5/01
Filed: 1962-02-14
Abstract: 987,884. Irradiation apparatus. MEDICOR RONTGEN MUREK. Feb. 14, 1962, No. 5712/62. Heading H5R. The radio-active source in an irradiation apparatus is movable between a non-operative position where it is shielded within a supporting wall, and an operative position in an irradiation head where it can be rotated so that the radiation beam always passes through a predetermined fixed point, the source being movable from one position to the other by gravityoperated means. In the arrangement shown, the radiation source 3 is located between two lead cylinders to form a unitary shell. This can be moved from a storage position within a container 5 to an operative position in a head 4 through a rigid connecting tube 6. Tube 6 has an inner steel tube 7, with a lead layer between them, and the shell actually moves within this inner tube 7, being fixed to the end of a rod 13. The rod pushes the source from within container 5 into the head 4, and retracts it back again. Fig. 3 (not shown) illustrates an arrangement of weights and pulleys for effecting these movements. The head 4 is formed as a lead ball, with a conical exit orifice 21 for the rays, and having exchangeable lead diaphragms 22. The storage container 5 is enclosed in a section 9 of the concrete wall 8 of the chamber in which the irradiation takes place. The wall section 9, and hence the whole device, is rotatable about a horizontal shaft 11. The device is inclined, as shown, so that as it rotates the beam of radiation from the head 4 always passes through a predetermined fixed point.
Patent GB-215486-A (GB)
Title: Improvements relating to spring buffers for railway and like vehicles
IPC: B61G11/04
Filed: 1923-02-27
Abstract: 215,486. Mitchell, J., and Cossey, J. C. G. Feb. 27, 1923. Buffers of the type comprising a plunger of pipe form open at its inner end, a casing divided axially into two parts, a spring contained in the casing and abutting at its end against the head of the plunger and the base plate, and means other than a stem securing the plunger for preventing the plunger from being ejected from the casing, are provided with internal projections or lugs fitted in the casing which engage in slots or recesses in the plunger, or in which external projections or lugs on the plunger engage in recesses in the casing. The plunger 1 is provided with recesses 8, 9 mto which project lugs 10, 11 from the casing. In a modification, the recesses are made in the casing and the projections on the plunger. The casing may have a separate base plate 6. The projections may be made by indenting the casing or plunger.
Patent GB-608468-A (GB)
Title: Improvements in or relating to the purification and clarification of liquids
IPC: C02F1/52
Filed: 1946-02-25
Abstract: A process for coagulating and removing suspended matter in coal washing effluents and in water which has been chemically treated to precipitate its hardness content, comprises adding thereto a solution containing sodium alginate, and a solution containing a salt of a polyvalent metal and separating the coagulated material. Examples are given involving the use of sodium alginate in conjunction with alumino ferric sodium aluminate, or aluminium sulphate.  Salts of polyvalent metals may include salts of calcium for example calcium chloride and calcium bicarbonate.  The amounts of sodium alginate and salt of a polyvalent metal are generally between 2 and 30 parts and 2 and 50 parts, respectively, per million parts of liquid treated.
Patent GB-345776-A (GB)
Title: Improvements in portable refrigerating chambers
IPC: F25D3/12
Filed: 1930-02-21
Abstract: 345,776. Refrigerators. SMALL, J. D., Douglaston, Long Island, New York, U.S.A. Feb. 21, 1930, No. 5822. Convention date, Feb. 21, 1929. [Class 29.] A portable refrigerator particularly adapted for transport on a railway truck comprises a gastight outer metallic casing 4 and an inner metal. container 8 between which thick walls 5, 6, 7 of insulation such as cork or kapok are provided, leaving however a gas circulation space between the exterior of the container 8 and the inner face of the walls. The chamber has service doors in its upright walls and a bunker 12 for solid carbon dioxide with an opening 25 for charging it, and is of such external shape or has external appendages, such as holding devices on the roof for hoisting tackle, so as to preclude the possibility of handling or depositing the chamber in any position other than right side up. The service door is held tightly closed by a clamping bar and wedge latches. The gaseous carbon dioxide flows down from the bunker, under the container 8 and then up the other side, passing finally either through cock 14 to the atmosphere or through cock 15 to the interior of container 8.
Patent GB-525491-A (GB)
Title: Improvements in steam valves
IPC: F16K1/44
Filed: 1939-02-22
Abstract: 525,491. Valves. BAUMANN, K., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 22, 1939, Nos. 5904 and 7861. [Class 135] A balanced double-beat steam valve has the channels by which the steam approaches and recedes from the valve seats made respectively convergent and divergent so that the steam attains substantially its maximum velocity as it passes over the valve seats. The valve member comprises an outer part 9 with conical seating faces 12, 13 ground so that the slant sides converge to a common apex in the centre line of the valve. The part 9 is suspended from a boss 8 secured to the valve spindle 7 by stream-lined ribs 10. The valve seats are formed on or secured to a cylindrical member 4 forming part of a shell enclosing the valve member and being provided with a series of perforations through which the stream passes when the valve is open. According to the second Provisional Specification this feature may be employed without using the convergentdivergent passage.