baber/WOPTO huggingface dataset:
Patent GB-646229-A (GB)
Title: System for obtaining similar or differential tuning or like adjustments in electron discharge device systems
IPC: H03F3/22
Filed: 1948-03-08
Abstract: 646,229. Control of several motors. RADIO CORPORATION OF AMERICA. March 8, 1948, No. 7152. Convention date, March 7, 1947. [Class 38(iii)] [Also in Group XL(c)] A motor control system for the tuning elements of a thermionic valve circuit comprises a separate reversible motor controlling each tuning element, and switching means for operating the motors to run simultaneously, either in the same direction or in opposite directions at will. Corresponding pairs of motors such as 10, 10<SP>1</SP> or 16, 16<SP>1</SP> are driven at the same speed, and are jointly controlled by switch gear as shown. Each motor is of the capacitator reversing type, having a pair of stator windings connected respectively between common terminal 100, and terminals 101, 102 between which is a capacitator. One supply line 53 is always connected to all the common terminals 100, and the direction of rotation of each motor is determined by whether the other supply line 54 is connected to terminal 101 or terminal 102. For motors 10, 10<SP>1</SP> this is controlled by a threeblade double-throw switch S4 and a twoblade double-throw switch S5. With the connections shown, the direction of rotation of motor 10 is determined solely by whether switch S4 is in position A or position B. The position of switch S5 allows motor 10<SP>1</SP> to rotate in either direction for each of the directions of motor 10. The pair of motors 16, 16<SP>1</SP> are similarly controlled by switch S6 and switch S5. Further pairs of motors may be similarly connected in circuit, each pair requiring a further three-blade switch, but employing switch S5 for all the pairs.
Patent GB-787350-A (GB)
Title: Improvements in electronic gating circuits
Inventor: SILVIE WILLIAM
IPC: H03K17/54
Filed: 1955-03-11
Abstract: 787,350. Discharge-tube gating circuits. BRITISH BROADCASTING CORPORATION. Jan. 25, 1956 [March 11, 1955], No. 7274/55. Class 40 (6). A gating circuit comprises a cathode-coupled pair of electric discharge-tubes, the anode circuit of one of which provides the output signal and is connected to the cathode circuit. The gating signal and the signal to be gated are both applied to the control grid of each tube and the effective value of the cathode impedance is reduced when the cathode voltage rises above or falls below a predetermined level so that the circuit is unbalanced and the signal to be gated appears at the output. Fig. 1 shows a gating circuit in which the signal to be gated is applied at terminal T2 and the gating signal pulses at terminal T1, the terminals being interconnected via a resistive bridge network, so that the gating pulses are applied at greater level to grid g1 than to grid g2 whilst the signal to be gated is applied at substantially equal levels to each grid. Thus when a positive gating pulse is applied at T1 the circuit is unbalanced and current flows in tube V2, the signal to be gated is superimposed on a different D.C. bias at each grid, but due to the large negative feedback the slope of each tube is the same and there is no output at T3 of the signal to be gated. When the positive gating pulse ceases, the grid voltage falls and is followed by the common cathode voltage until rectifier D conducts, thus reducing the cathode impedance and unbalancing the circuit with respect to the signals applied at T2. An output signal appears at T3 until a further positive gating pulse is applied when rectifier D is cut-off and the output signal is terminated. When the gating pulses are of opposite polarity the direction of rectifier D is reversed. Fig. 4 shows a modification in which the gating pulses are applied at B1, C1 via cathode follower tubes V3, V4 and the signal to be gated is applied at A1 via a balancing potentiometer 22 to tubes V1, V2. Normally, tubes V1, V2 are unbalanced with respect to the signal at A1 which passes to output E1. When a gating pulse is applied, the circuit is balanced and the output ceases. In a modification, Fig. 3 (not shown) two gating circuits are associated with a feedback amplifier so that when one gate is open the other is closed.
Patent GB-348751-A (GB)
Title: Sprung rear wheel of motor cycle
IPC: B62K25/20
Filed: 1930-03-06
Abstract: 348,751. Motor cycle spring frames. KIRK, E. J., 61, Main Street, Carlton, Nottinghamshire. March 6, 1930, No. 7289. [Class 136 (iii).] The ends of the rear wheel axle a are mounted in adjustment slots in the front ends of two double links c, the rear ends of which are pivoted in adjustable bearings d at the junction of the upper and lower rear frame tubes f, g, the rear of the frame being cross-braced by a tube x extending around the rear of the wheel from one junction lug to the other. The motion of the links is controlled by two laminated springs h, which are connected to the links c by two double shackle links i and are secured at their front ends beneath the frame tubes g. Distance pieces are mounted on the axle a between the two members of each double link c.
Patent GB-166306-A (GB)
Title: Improvements in and relating to artificial limbs
IPC: A61F2/60
Filed: 1920-03-11
Abstract: 166,306. Shaw, L. March 11, 1920. Limbs, artificial.- A bucket for attaching an artificial limb to the stump of the natural limb is formed of inner and outer layers of cowhide or buffalo hide between which are interposed layers of papier mÔchÚ. The bucket is formed on a mould of a model taken from the patient's thigh &c. in plaster of paris or similar moulding-material, and the hides and papier mÔchÚ are steamed or otherwise softened previously to render them pliable. Fig. 1 shows a bucket a for attaching an artificial leg d to the body of the patient. The bucket is attached by a strap b to a waist-belt and by a strap c to the opposite shoulder, and the upper portion d of the artificial leg is attached to the bucket by means of hinged metal plates e e<1>, f f<1> and a strap, and the upper portion is connected to the lower by hinged plates g, h.
Patent GB-910184-A (GB)
Title: Improvements in or relating to composite shaft constructions
Inventor: GREENWOOD ERIC
IPC: G04B13/00
Filed: 1958-03-07
Abstract: 910,184. Shafts; toothed wheels. ENGLISH ELECTRIC CO. Ltd. March 6, 1959 [March 7, 1958], No. 7405/58. Classes 80 (1) and 80 (2). A shaft for electricity meters comprises a steel shaft around which is moulded a sleeve of acrylic plastic 20 which has formed integral therewith a'gear pinion 21 and hub 25 carrying a gear pinion 23, the ends 19a of the shaft, which project beyond the sleeve 20, forming bearing surfaces whilst the ends of the sleeve form thrust bearings. Electrolytic corrosion is reduced as the sleeve is made of insulating material.
Patent GB-1517674-A (GB)
Title: Antibacterial 6,7-methylenedioxy quinolones
IPC: C07D491/04
Filed: 1977-02-22
Abstract: In order to prepare the novel compounds of the formula (I) <IMAGE> having R3 in accordance with Patent Claim 1, compounds of the formula (II) <IMAGE> are used as starting material. The radical :CF2 is inserted into the latter compounds. This reaction takes place in an aprotic solvent, it being possible to obtain the radical either by means of the pyrolysis of an alkali metal salt of chlorodifluoroacetic acid or by means of the reaction between HCF2Cl and a base. The compounds of the formula (I) are further reacted to give compounds of the formula (IV) <IMAGE> having R in accordance with Patent Claim 3. The abovementioned compounds exhibit antibacterial activities.
Patent GB-1453482-A (GB)
Title: Bulb holder and a method of manufacturing a wiring harness  incorporating the bulb holder cryogenic vessel insulation
IPC: H01R33/22
Filed: 1974-02-19
Abstract: 1453482 Bulb-holders RISTS WIRES & CABLES Ltd 13 Jan 1975 [19 Feb 1974] 7475/74 Heading H2E A bulb holder comprises a first contact 17 terminating on lead 18 held resiliently biased in the bore of an insulating member 14 and retained therein by resilient lances 19, the member 14 being within a metal sleeve 11 constituting a second contact. The sleeve 11 is formed with a flange 12, 13 at each end, the flange 12 defining an aperture deformed to define one convolution of a screw thread, and the flange 13 defining an aperture which to one side supports a shoulder portion 15 of the member 14 and to the other side supports a spring 16 acting on the member 14. The holder is intended to be used with a wiring harness, the contact 17 being secured to a lead of the harness before being inserted into the member 14.
Patent GB-1071005-A (GB)
Title: Method and apparatus for continuous heat-treatment of mash
IPC: C12C7/06
Filed: 1965-02-22
Abstract: <PICT:1071005/C6-C7/1> In the continuous heat treatment of mash, heated mash is passed through a temperature holding zone, which zone comprises a tubular, substantially vertical first passage and an annular, substantially vertical second passage surrounding the first passage, at a substantially constant rate of flow with respect to time and under turbulent flow conditions, first upwardly through one of the passage and then downwardly through the other of the passages, and the mash passes only once through the passages and the passages communicate with each other only at their upper ends. The upward flow may take place in the first, inner passage and downward flow in the second, outer passage Fig.1 (not shown). The flow velocity is kept at a higher rate in the passage through which the mash flows upwardly than in the other passage. The through-flow time of mash passing upwardly within tube 3, Fig.3, and downwardly in annulus 2, may be controlled by an air cushion 7 maintained at a constant, but adjustable, pressure, and an overflow pipe 12 or throttle valve (not shown).  The mash may be passed in series through two or more sets of passages or tubes.
Patent GB-102578-A (GB)
Title: Improvements in Centrifugal Fans.
IPC: F04D29/06
Filed: 1916-05-26
Abstract: 102,578. Dod, G. and Imperia Co. May 26, 1916. Dust, excluding.-In a single or multi-stage centrifugal pump, access of dusty air to the bear. ings 5 of the impeller shaft 4 is prevented by providing around the shaft between the bearings and the impeller casing, a chamber 10 communicating with the atmosphere by a conduit 11.
Patent GB-1498585-A (GB)
Title: Method of and apparatus for transferring material dislodged from a mine face
IPC: E21D20/00
Filed: 1976-02-25
Abstract: 1498585 Mineral-mining installations CONSOLIDATION COAL CO 25 Feb 1976 [3 March 1975] 07498/76 Heading E1F Apparatus 10 for continuously transferring mined material dislodged from a mine face by a continuous mining machine comprises an elongated body portion 40 having groundengaging means for propelling said body portion through a mine, vertical plate members 54, 56 secured to opposed sides of said body portion, a longitudinally extending conveyor 28 extending the length of said body portion between said plate members, roof-drilling means 36 pivotally mounted and vertically movable relative to the body portion for drilling bolt holes and installing roof bolts in the mine roof, actuating means 100 for laterally swinging each roof drilling means about a vertical axis and means 108 for moving each said roof-drilling means horizontally to enable bolt holes to be drilled and roof bolts installed at preselected locations in the mine roof, and roof-support means 114 mounted on said body portion for supporting the mine roof as mined material is being continuously received by the conveyor and whilst roof bolts are being installed by said roof-drilling means.
Patent GB-1022030-A (GB)
Title: Improvements in methods of preparing polyurethane foams
IPC: C08J9/00
Filed: 1964-02-24
Abstract: A prepolymer, comprising a hydroxyl-group containing resinous compound and a stoichiometric excess of an isocyanate compound which have been vigorously agitated and rapidly cooled to below the freezing point of the isocyanate compound, is mixed with a catalyst below the temperature at which gas is liberated, and is then discharged so that a foaming reaction occurs when the temperature is raised and a polyurethane foam is formed.  The foaming mixture can be cast into thin cellular foam sheets by spreading the mixture on a carrier belt and allowing it to expand. In the example polyurethane foam is made from a mixture of 80% toluene 2,4-di-isocyanate and 20% toluene 2,6-di-isocyanate and a diethylene glycol-adipic acid polyester using an aqueous solution of N,N,N1,N1-tetra-methylbutane diamine and triethylene diamine as catalyst.
Patent GB-1041988-A (GB)
Title: Cyclic trimer of 4-vinylpyridine
IPC: C07D213/16
Filed: 1965-02-22
Abstract: The invention comprises sym-tri(4-pyridyl) cyclohexane and in particular the crystalline form of said compound which melts at 228.5 DEG  C., has a molecular weight of 315 and has a rhombohedral unit cell with the constants a = b = 17.5 <\>rA, c = 4.65 <\>rA based on the hexagonal system of axes.  The compound is made by the thermal degradation at 250-300 DEG  C. of a salt of a 4-vinylpyridine polymer and subsequently isolating the compound by fractional precipitation from an alcoholic solution or from a solution in an halogenated hydrocarbon.ALSO:Poly-4-vinyl pyridine is made from the monomer using (C2H5)2NMgI as the polymerization catalyst. The polymer is isolated using conventional techniques.  The thermal degradation of poly-4-vinyl pyridinium hydrochloride produces sym-tri-(4-pyridyl)cyclohexane.
Patent GB-742602-A (GB)
Title: Method for preparing dihydrostreptomycin salt of pyruvic acid isonicotinyl hydrazone
IPC: C07D213/81
Filed: 1953-03-19
Abstract: The dihydrostreptomycin salt of 1-isonicotinyl - 2 - (1 - hydroxy - 1 - carboxyethyl)-hydrazine having the formula <FORM:0742602/IV(a)/1> is prepared by reacting 1-isonicotinyl-2-(1-hydroxy - 1 - carboxyethyl) - hydrazine, or an alkali or alkaline earth metal salt thereof, with dihydrostreptomycin, or an inorganic salt of dihydrostreptomycin.  The sodium salt of the hydrazine and the sulphate of dihydrostreptomycin are specified.  1 - Isonicotinyl - 2 - (1 - hydroxy - 1 - carboxyethyl)-hydrazine is prepared by reacting pyruvic acid with isonicotinyl hydrazine in a solution in (a) water, or (b) glacial acetic acid.  In the case of (b), the pyruvic acid isonicotinyl hydrazone first formed is treated with water to form the hydrazine.
Patent GB-890285-A (GB)
Title: Improvements relating to the mixing of liquids
IPC: B01J49/00
Filed: 1959-03-05
Abstract: 890,285. Mixing liquids. ZWICKY, J. F. March 1, 1960 [March 5, 1959], No. 7665/59. Class 86. An apparatus for ensuring uniformity in mixtures of caustic soda solution or acid in water comprises a Venturi pump 4 to which deionized water is supplied through a pipe 1 to a storage tank 5. The secondary liquid is lifted from the vessel 2 through a pipe 3. The amount of water supplied may be adjusted by a valve 6. A tube 8 of microporous material extends across the bottom of the tank 5; there is a valve 7 adapted to put the pipe 3 into communication with both or either the tube 8 and for the vessel 2, so that the solution in tank 5 may be recirculated with or without the addition of additive as well as water. The additive may for example be regenerant caustic soda solution for resin-ion exchange water-deionizing apparatus, or concentrated acid. Solid caustic soda to be dissolved may be placed in a basket 9 at the Venturi outlet.
Patent GB-976578-A (GB)
Title: Improvements in or relating to mixing apparatus
Inventor: HAYES STANLEY ALFRED
IPC: B01F5/04
Filed: 1962-02-28
Abstract: 976,578. Injectors. HAYES SPRAY GUN CO. Feb. 28, 1962, No. 7733/62. Heading F1E. [Also in Division B1] In an apparatus for adding a small controlled proportion of a secondary liquid to a flow of primary liquid, the latter is supplied to the inlets of two injectors, of which one induces the secondary liquid and delivers the mixture thus formed to the induction passage of the second injector where it is further mixed with the main flow of primary liquid. As shown in Fig. 1 part of a flow of water supplied by a pump 21 is by-passed through a pipe 40 to an injector 44 which draws chemical additive from a container 52 and forces the mixture into the mixing chamber 37 of a second injector 28 in the main water flow; the final mixture may be supplied to a spray nozzle 27. The diffusion passage 49 of the injector 44 is cylindrical, and of length not less than its diameter (which should be greater than that of the terminal inlet passage 47); or frusto-conical and convergent in the direction of flow at an included angle of not more than two degrees. The inlet and diffusion passages may each comprise various combinations of cylinders and tapers as shown and as described with reference to Figs. 5-10 (not shown). The inlet passage 33 of the second injector 28 may be tapered, cylindrical or of square cross-section and the diffusion passage need not be cylindrical but may be tapered. In operation the pressure of water supplied may be controlled by means of the adjustable pressure relief valve 62. Performance curves for the injectors 28 and 44 separately and in combination for various pressures from 100 to 600 p.s.i. are given in Figs. 2-4 (not shown). In a modification where a high velocity discharge is not required, the second injector may be replaced by a pair of restrictions 141, 146, Fig. 12, in the main conduit. There may also be introduced in the apparatus of Fig. 1 or Fig. 12 a restriction as at 151, Fig. 12, to provide additional back pressure on the injector 44 and increase the proportioning accuracy. In the arrangement of Fig. 13, a single injector 159 draws chemical additive from a supply 159A and delivers to a manifold 158 whence the mixture is supplied to the injectors 152, 153, 154 where it is further diluted and discharged through outlets 152A, 153A, 154A which may supply spray nozzles.
Patent GB-697815-A (GB)
Title: A device to permit the machining of large workpieces in centre and other lathes
IPC: B23B25/00
Filed: 1951-04-05
Abstract: 697,815. Lathe attachments. BROWNSON, F. O. March 31, 1952 [April 5, 1951], No. 7870/51. Class 83 (iii). A device for machining large work in lathes by rotating the work in positions where the plane of its rotation is not obstructed by the lathe-bed comprises an easily detachable additional mandrel and driving means therefor which will rotate attached work in a plane parallel to the length of the lathe-bed and at either side thereof. In one form an auxiliary headstock A, Fig. 2, houses driving bevel-gears for a spindle H which carries work G at the rear of the lathe. A coupling C connects the lathe spindle with the drive to the auxiliary device. The normal cross-slide is used for turning the work. In a modification, Fig. 3, a bracket X, secured to the lathe bed, supports an auxiliary headstock and a chain drive C is employed.
Patent GB-1110208-A (GB)
Title: Process for the preparation of epoxy resin esters
Inventor: ALBERT WILLAM DE RUYTER VAN ST
IPC: C08G59/16
Filed: 1967-02-20
Abstract: An ester resin which is soluble in xylene is prepared by reaction at elevated temperature (e.g. 200-260 DEG  C.) between a glycidyl ether of a polyhydric phenol and a monocarboxylic acid in the presence of, e.g., 0.2-1.2 milliequivalents of a compound <FORM:1110208/C3/1> in which A is P, As or Sb and the R's are each C1-C18 hydrocarbon radicals.  Compounds exemplified are: triphenyl phosphine, tri-n-butyl phosphine and trilaurylphosphine.  The glycidyl polyether may be derived from 2,2-bis(4-hydroxyphenyl) propane, have a M.W. of 700-4000 and an esterification equivalent weight of 100-220, i.e. the amount of resin in grams required to esterify 1 gram mole of monobasic acid.  The resins may be used in formulating air drying and stoving enamels and may be used in conjunction with metallic driers and/or urea formaldehyde and melamine / formaldehyde resins.
Patent GB-549999-A (GB)
Title: Hand-pressure surgical bone gouge
IPC: A61B17/16
Filed: 1941-09-06
Abstract: 549,999. Bone-cutting appliances. COOKE, C. Sept. 6, 1941, No. 8074. [Class 81 (ii)] A bone-cutting gouge has the end of semicircular cross-section with cutting teeth A formed on the inner and outer surfaces of the semi-circular portion and with the outer ends of the teeth bevelled inwards. The V-shaped grooves formed by the teeth on the inner semicircular surface are connected with the semicircular groove F to prevent clogging of the teeth and a handle G, shaped to fit the hand, is provided.
Patent GB-1372465-A (GB)
Title: Method of electrolytically purifying waste water
IPC: C02F103/16
Filed: 1972-02-22
Abstract: 1372465 Electrolytic purification of waste water MITSUI MINING & SMELTING CO Ltd 22 Feb 1972 [23 Feb 1971] 8099/72 Heading C7B Waste water containing as impurities metal ions, fats, oils and/or suspended solids is electrolytically purified using an electrolytic cell 1 having vertical anodes 2 formed of Fe, Al or Al alloy and horizontal cathode(s) 3 positioned beneath the anodes and at or adjacent the cell base, formed of Cu, Fe, Ni or stainless steel; the anodes dissolving to produce floc and hydrogen gas bubbles formed at cathode together with the floc and impurities forming a scum on the surface of the bath which is removed therefrom, e.g. using device 8 and purified water is removed from a lower part 9 of the cell. The anodes 2 may be separated by solid or perforate partitions 10.
Patent GB-968911-A (GB)
Title: Improvements in or relating to stockings
Inventor: HOWLETT FRANK
IPC: D04B1/26
Filed: 1962-03-02
Abstract: A circular knit stocking is made of synthetic filaments wherein the welt is knit of multifilament yarn which has been drawn in the solid state to less than 2.2 times its original length as weltspun whilst the remainder of the stocking is knit of filaments which have been drawn to form 3 to 5 times their original length as welt-spun, at least the leg portion being knit of monofilament.  The foot portion of the stocking may be knit of monofilament or multifilament yarns. The synthetic filaments are synthetic polyamides (e.g. nylon).
Patent GB-145171-A (GB)
Title: Improvements in gramophones
IPC: G10K13/00
Filed: 1919-04-01
Abstract: 145,171. Barnard, T. K., and Gilbey, M. April 1. 1919. Sound - directing appliances. - A phonograph horn speaks into a concave deflector O in the lid of the case, made of veneer, three-ply wood or the like, and having curvature in one plane only.
Patent GB-960311-A (GB)
Title: Improvements in the heat treatment of ethylene polymers
IPC: C08L23/04
Filed: 1962-03-02
Abstract: A process for the heat-treatment of an ethylene polymer in an oxygen-free environment at a temperature at least 85 DEG C. above its melting point, whereby the polymer is rendered more easily extrudable, comprises forming a blend of the ethylene polymer with 0.1 to 10% of a polymer of at least one of the olefins isobutylene, styrene and o, m and p-methyl styrene, and subjecting the blend to heat treatment.  The ethylene polymer may be a homopolymer or a copolymer of ethylene with another olefin such as propylene or butene.  In the examples the treatment is effected in an extruder with a heated extension tube.  A nitrogen atmosphere is maintained in the hopper and the extruder is filled with molten polymer.  The M.P. of the ethylene polymer used is 135 DEG C. and the heat treatment is at about 360 DEG C.  Some depolymerization of the modifying polymer may occur.
Patent GB-126807-A (GB)
Title: Improvements in Cleaning Devices Suitable for Cleaning Steel Tapes.
Inventor: JONES JOSEPH HENRY
IPC: B21B45/00
Filed: 1918-05-17
Abstract: 126,807. Jones, J. H. May 17, 1918. Block, rubber, and like apparatus.-Relates to means for cleaning steel tapes, such as tape measures. In the apparatus shown, the various parts of which are mounted on standards on a base 1, a tape-measure holder 33 is clamped be. tween jaws 31, 32, and the tape is wound to a reel 35 between pads 25, 27, the upper of which is supplied with liquid such as oil, and between spring-pressed blocks 12 covered with emery paper &c. After the tape has been wound on the reel 35, it is re.wound into the holder 33.