baber/WOPTO huggingface dataset:
Patent GB-494467-A (GB)
Title: Variable self-inductance devices
IPC: H01F21/06
Filed: 1937-12-21
Abstract: 494,467. Inductances. LORENZ AKT.- GES., C. Dec. 21, 1937, No. 35374. Convention date, Dec. 21, 1936. [Class 38 (ii)] A variable inductance comprising relatively movable windings 1, 2 is provided with a short circuited winding 4 arranged substantially perpendicular to one of the windings 1, 2. The winding 4 may be formed of copper sheet and may be secured to either the fixed winding 1 or the movable winding 2. Two short circuited windings may be provided one being secured to the winding 1 perpendicular thereto and the other being similarly associated with the winding 2.
Patent GB-487942-A (GB)
Title: Improvements in or relating to self-filling fountain pens
IPC: B43K5/04
Filed: 1936-12-28
Abstract: 487,942. Fountain pens. MENTMORE MANUFACTURING CO., Ltd., and JOHNSON, W. F. Dec. 28, 1936, No. 35514. [Class 146 (iii)] In a self-filling fountain pen having a collapsable sac mounted at the end of the barrel remote from the nib and, preferably an air-tube extending longitudinally of the barrel as described in Specification 439,182, the closed end of the sac 2 is enclosed in a stiff hollow thimble or ferrule 5 guided in the end of the barrel and serving to facilitate deflation of the sac. The guide is in the form of a metal sleeve 6 serving also for the attachment of a cap 7 covering the thimble. A flange 8 on the thimble prevents detachment; and a spring may be provided to return the thimble to normal position.
Patent GB-867386-A (GB)
Title: Improvements in dolls and like figures
IPC: A63H3/04
Filed: 1958-11-05
Abstract: 867,386. Dolls. UPPERTON, P. G. E. Oct. 9, 1959 [Nov. 5, 1958], No. 35560/58. Class 132(3). A doll or like figure comprises a head 6 which may be wood, arms and legs formed from two lengths of sleeved wire 1, 2 and hands and feet consisting of beads or mouldings 7 and 8 pressed on to the arms and legs, at least one of the wires having a bent part secured in a boring in the head. As shown in Figs. 2 and 5, the wire 1 forms two arms and the wire 2 two legs but, as shown in Fig. 6, each wire comprises one arm and one leg. The arms and legs, as shown in Fig. 2, are bent at 3 and connected together by tape 4 ready to be adhesively secured in a blind boring 5. As shown in Fig. 6, the wires are folded back on themselves and passed through a diametral bore in the head and around a length of covered wire or tape 12 adhesively secured to the head. As shown in Fig. 5, only the legforming wire 2 is secured in the head whereas the arm-forming wire. 1 is tied at 11 so that it is free to turn relatively to the legs. Hair is simulated by cotton wool 9, Fig. 4, and hats by foam plastic material 10 and garments are produced from pieces of fabric machine stitched or adhesively joined together.
Patent GB-924162-A (GB)
Title: Improvements in or relating to screw connections comprising lock nuts and lock washers made from material that is deformable under pressure
Inventor: SCHOMPER FRANS
IPC: F16B39/34
Filed: 1959-10-21
Abstract: 924,162. Locking-nuts. J. A. VRIEZEN, and J. G. VRIEZEN, [trading as VENNOOTSCHAP ONDER FIRMA V. & M.]. Oct. 21, À1959 [Oct. 23, 1958], No. 35674/59. Class 89 (1). A screw-connection comprises a lock-nut 2 and a lock-washer 1, deformable under pressure, a ring-shaped projection 5 on the nut limiting the outward movement of the washer when in its compressed state. In a modification, the projection 5 may be in the form of a separate ring in a groove in the nut 2 and in a further modification the ring may be of L-shaped crosssection which lies on the surface 3 of the work and surrounds the outer diameter of the washer. Specification 728,196 is referred to.
Patent GB-372306-A (GB)
Title: Improvements in and relating to the manufacture and production of alkali metal cyanides
IPC: C01C3/10
Filed: 1930-11-27
Abstract: Alkali metal cyanides are obtained by heating alkali metal carbamates to a temperature between 240 and 600 DEG  C. to form a mixture of alkali metal cyanate and carbonate, treating this mixture with ammonia and carbon dioxide at 300-650 DEG  C. to convert the carbonate present into cyanate and finally heating the resulting cyanate with reducing agents to form alkali metal cyanide.  The reduction to cyanide may be carried out between 550 and 750 DEG  C. preferably by means of gaseous reducing agents such as carbon monoxide.  The carbon monoxide is preferably free from hydrogen.  The cyanide may be extracted from the crude product by means of liquid anhydrous ammonia.  In the treatment with ammonia and carbon dioxide, salts may be added to the mixture, especially those, such as chlorides, which lower the melting point of alkali metal carbonates. The gases unabsorbed in the step converting the carbonate to cyanate may be cooled to remove water before recirculation.  The solution of ammonium carbamate so obtained may be reacted with calcium sulphate to produce ammonium sulphate. The first provisional Specification describes also a process in which the treatment of the alkali cyanate-carbonate mixture with ammonia and carbon dioxide is omitted. The second Provisional Specification describes also the production of alkali metal cyanates by the action of ammonia and carbon dioxide on alkali metal carbonates or hydroxides at temperatures between 300 and 650 DEG  C. Specifications 307,778 and 328,005, [both in Class 1 (ii), Inorganic compounds, other than &c.], are referred to.
Patent GB-1530705-A (GB)
Title: Device for breeding keeping and transport of living organisms
IPC: A01K63/02
Filed: 1976-08-27
Abstract: 1530705 Keeping fish CESKOSLOVENSKA AKADEMIE VED 27 Aug 1976 [19 Sept 1975] 35751/76 Heading A1A [Also in Divisions B1 C3 and C6] A container suitable for the breeding, transport and keeping of fish comprises a water-swollen membrane permeable to gases but not to viruses, microbes and their spores and formed from a multi-block copolymer of crystalline acrylonitrile polymer blocks and acrylamide and/or acrylic acid polymer blocks. The container is typically simply a bag with a welded closure, examples referring to the transport of carp and the breeding of trout eggs.
Patent GB-1173348-A (GB)
Title: Apparatus for quick freezing solid foods
IPC: F25D31/00
Filed: 1967-08-07
Abstract: 1,173,348. Freezing foods. A. F. WENTWORTH & ASSOCIATES, Inc. 7 Aug., 1967 [16 Sept., 1966], No. 36167/67. Heading F4H. Shrimps are frozen by contact with a refrigerated surface 5 of a drum 1 rotating about a horizontal axis within an insulating casing 10. The drum is filled with insulation 47 and is double walled to provide a space 5a containing refrigerant pipes. Refrigerant pipes 48 may also be provided on the inner wall of the casing 10. Shrimps are dropped on to the drum surface by a conveyer 32 and are pressed against the surface by a flight 38 of the conveyer. The shrimps adhere to the drum by virtue of the formation and are carried round to be removed by a blade 25 which slopes upwardly from its point of contact with the drum so that shrimps pile up on it until transferred by a rotating paddle 28 to the lower flight 20 of a conveyer 18 which transfers the frozen shrimps to a glazing tank.
Patent GB-821073-A (GB)
Title: An improved doorlock for motorcars
IPC: E05B65/32
Filed: 1956-11-27
Abstract: 821,073. Door latches. MASUR, E. L. Nov. 27, 1956 [Dec. 27, 1955], No. 36263/56. Classes 44 and 65(1) A door latch for motor cars having a rotary latch bolt which is fastened in two stages and which is either of the gear or bifurcated type keyed on a spindle is characterized in that a mechanical actuating device is positioned to force the latch bolt from the first (intermediate) stage to the second (final fastening) stage, the actuating device being acted upon by a remotely controlled power means to which it is connected. In Fig. 1 which relates to a gear type bolt (not shown) the rotation of the bolt is controlled by a ratchet wheel 4 and pawl 6 so that the bolt can only rotate in one direction. On the bolt spindle 3 there is also fastened a cog-wheel 7 having the same number of teeth as the bolt. The actuating device comprises a finger 9 which is pivotally connected to a push rod 8 carried by a bracket 10; the push rod is connected to the piston 12 of a hydraulic cylinder 16 and this is actuated by a foot pedal controlled by the car driver. When the piston is moved the finger engages one of the teeth of the cog-wheel 7 and rotates the cog-wheel and hence the bolt so that the bolt reaches its final fastening position. The finger 9 is urged by a spring 14 into engagement with the cog-wheel and this spring yields during the retracting movement of the finger to its initial position so that the finger can pass over the teeth of the cog-wheel. In a modification instead of providing the cog-wheel 7, the ratchet wheel 4 is provided with pins near the apex of each tooth and these are engaged by a modified finger. In a construction suitable for a latch having the bifurcated rotary bolt, a plate 20 is secured to the bolt spindle 21, this, plate haying two teeth 22, 22a which can be selectively engaged by a pawl 23; when the pawl engages the tooth 22 the latch bolt is Utefirst fastening stage and when the pawl engages the tooth 22a the latch bolt is in the final fastening stage. A push rod 25 mounted on a bracket 26 and actuated by a hydraulic cylinder is provided as in the previous embodiment for moving the latch bolt to its final fastening'stage and the end of the push rod engages a pin 24 near the tip of the tooth 22a. Instead of using a hydraulic cylinder the push rod can be actuated by electromagnetic devices or vacuum powered systems.
Patent GB-779674-A (GB)
Title: Improvements in or relating to textile machine rollers
IPC: C04B35/584
Filed: 1954-12-16
Abstract: 779,674. Rollers. THWAITES, J. Dec. 2, 1955 [Dec. 16, 1954], No. 36431/54. Class 42 (2). [Also in Group IX] A textile machine roller comprises a spindle 10 having annular or helical grooves 13 into which a covering layer of plasticized polyvinyl chloride enters. The outer surface of the polyvinyl chloride may have shallow grooves 14 aligned with the grooves 13 on the spindle or may be ground to plain cylindrical shape. Such rollers may be made by placing the spindle 10 in a mould into which polyvinyl chloride in paste form is forced, the coated spindle being subjected to heat after removal from the mould to cure the polyvinyl chloride, such curing preferably being carried out at a lower temperature than usual, e.g. 125-130‹ C., but for a longer time, e.g. 4 hours.
Patent GB-162608-A (GB)
Title: Improvements in fire bridges for furnaces
IPC: F23M3/00
Filed: 1920-12-30
Abstract: 162,608. Quinn, A. P. Dec. 30, 1920. Fire-bridges.-In a fire-bridge of the kind described in Specification 20345/08 having horizontal gas passages intersecting vertical air passages, additional air passages are provided. The lower gas passages c which intersect the air passages d are closed at the rear as shown in Fig. 5. The bridge is built up of blocks a, b, the wing blocks b being provided with fitting-strips f.
Patent GB-1430368-A (GB)
Title: Quinoline-2-carboxylic acids and their use in the extraction of metals
IPC: C07D215/48
Filed: 1972-08-04
Abstract: 1430368 Quinoline-2-carboxylic acids IMPERIAL CHEMICAL INDUSTRIES Ltd 20 July 1973 [4 Aug 1972] 36560/72 Heading C2C [Also in Division C1] Novel quinoline-2-carboxylic acids having the general formula  wherein R and R<SP>1</SP> are hydrogen or halogen, cyano, nitro or optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl, alkoxy, alkenoxy, cycloalkoxy, aralkoxy, acyloxy, or aryloxy groups; R<SP>2</SP> is halogen or an optionally substituted alkoxy, alkenoxy, cycloalkoxy, aryloxy, or aralkoxy group; and R<SP>3</SP> is hydrogen, or an optionally substituted alkyl, alkenyl, aryl or aralkyl group, provided that the groups R, R<SP>1</SP> and R<SP>3</SP> contain a total of at least 3 carbon atoms, are prepared either by (i) heating an alkyl ester of a quinoline-2-carboxylic acid of the above formula in which R<SP>2</SP> is a hydroxyl group, in the presence of phosphorus oxychloride, phosphorus pentachloride or phosphorus oxybromide and hydrolysing the ester group in the product so obtained to give a compound of the invention wherein R<SP>2</SP> is a chlorine or bromine atom, (ii) heating an alkyl ester of a quinoline-2-carboxylic acid of the above formula in which R<SP>2</SP> is a chlorine or bromine atom with an alkali metal derivative of an optionally substituted alcohol or phenol and hydrolysing the ester in the product so obtained to give a compound of the invention wherein R<SP>2</SP> is an optionally substituted alkoxy, alkenoxy, cycloalkoxy, aryloxy or aralkoxy group; or (iii) heating an alkyl ester of a quinoline-2-carboxylic acid of the above formula wherein R<SP>2</SP> is a hydroxyl group, with an optionally substituted alkyl, alkenyl, cycloalkyl, or aralkyl chloride or bromide in the presence of a base, and hydrolysing the ester in the product so obtained to give a compound of the invention wherein R<SP>2</SP> is an optionally substituted alkoxy, alkenoxy, cycloalkoxy or aralkoxy group. The compounds of the invention may be used to extract the metal values from aqueous solutions thereof.
Patent GB-428954-A (GB)
Title: Improvements in or relating to control apparatus for winding engines
IPC: B66B1/12
Filed: 1933-12-30
Abstract: 428,954. Winding - apparatus. STEAD, E. B., 381, City Road, and CLARKE, W., Eastcliffe, East Bank Road, both in Sheffield. Dec. 30, 1933, No. 36680. [Class 78 (v)] In control apparatus for winding-engines of the type in which a brake is applied by trip gear when the winding speed becomes excessive, means are provided to enable the trip gear to apply the brake partially when the cage is remote from either end but fully towards each end of the wind. The partial application of the brake is effected by the withdrawal of a support to a weighted bell-crank 9, 10 when the cage attains excessive speed. The arm 9 of the bellcrank carries a pivoted floating lever 5 connected to the brake lever 3 by a link 4, 25 and to a bell-crank 14, 15 by a link 13. When the weight 12 drops, the lever 5 is swung into the position shown in dotted lines and the brake lever 3 is pulled to the " on " position after a lost-motion between the lever pin 18 and a slot 19 in the link 4 has been taken up. The full " on " position is effected by a cam 17, driven by the winding engine, acting on the leg 15 of the bell-crank 14, 15, to put the brake on, if desired, with gradually increasing force. The arm 9 of the bell-crank 9, 10 may be connected to the lever 5 by a link, in which case a support 20 is provided for the link 13. To prevent the weight of the lever 3 from increasing the brake pressure when it has been put partly on, an elastic stop therefor may be provided consisting of a spring 30 carried by a link 29 pivoted to a lever 26 hinged at 27 and fitted with an abutment 28. A nose 21 pivoted at 22 carries an extension 24 pivoted to the link 4, 25 which is now formed in two parts. Lateral pull by the links 4, 25 on the lever 3 brings the nose 21 up against the abutment 28 and allows the spring 30 to support the lever 3, while permitting further movement of the lever 3 in the same direction when the cam 17 comes into action. In all positions of the trip gear the brake is capable of being fully applied by hand.
Patent GB-1064371-A (GB)
Title: Improvements in the fused salt electrolysis of alumina
IPC: C25C3/14
Filed: 1963-09-18
Abstract: In a process for the fused salt electrolysis of alumina reduction to a predetermined level of the alumina content of the bath is detected by a pilot anode, of small base area relative to the total anode, which is subjected to pulses of current whereby the density of the current through the base area is higher than that through the bath anode surface under normal running conditions, the voltage of the pilot anode being measured during the impulse and the impulse being repeated until the measured voltage exceeds a predetermined threshold corresponding to the required level and the applied current density. Pulse durations and repetition times are exemplified.  The pilot anode is in mechanical contact with the remainder of the tank anode system but electrically insulated therefrom and is arranged to be connected in a manner producing across its base, the tank anode current density at times other than during the application of a measuring impulse.  The detection of a minimum desired alumina level may be used to control alumina replenishment which may be achieved by breaking the bath crust by horizontal anode movement.  The content may be kept between desired limits by successively and alternately applying currents producing two differing but predetermined based densities which control the replenishment which is terminated at the higher level indication.  The replenishment may be made in small quantities at close time intervals at a rate exceeding the mean consumption rate.  The arrangement may be applied individually to the tanks of a group and the successive application of impulses may be automatically controlled, the voltages being measured between the rod of a pilot anode and the positive frame of the following tank. Regulation of the inter-polar distance between electrodes may be achieved in response to the simultaneous determination of tank internal resistance.  The impulse may be from a separate direct current source or may be from a circuit in parallel with the main source and the pilot anode may be an insulated insert in a bore within an anode or may be one anode of a group of prebaked anodes. The switching may be achieved by pneumatically operated rocking conductor bars. The measured voltages may be used to operate warning lights.
Patent GB-887744-A (GB)
Title: Improvements in methods of and means for internally lining pipes and the like
IPC: F16L58/10
Filed: 1959-10-30
Abstract: 887,744. Lining pipes by extrusion. ECONOSTO, BUREAU VOOR ECONOMISCHE STOOMPRODUCTIE N.V. Oct. 30, 1959 [Nov. 3, 1958], No. 36938/59. Class 87(2). A method of lining pipes with plastic material, e.g. rubber or synthetic resin, comprises feeding the plastic material into the pipe through an extrusion nozzle which shapes the inside of the lining whilst being moved relative to the pipe to apply the lining. The pipe 1 has flanges 2, 6 to which are secured a moulding flange 3, with pressure inlet 4 and spew holes 5, and a moulding flange 7, with spew holes 5, attached to a pipe 8 with vacuum draw-off 9. The extrusion nozzle comprises a shaping member 14 connected to a member 12 having a supply line 10. In operation, the nozzle is inserted in the pipe until it abuts the flange 3 and plastic material is extruded until it lines the flange 2 and issues from the spew holes 5. Compressed air or steam is then admitted through the inlet 4, vacuum applied through the draw-off 9 and the nozzle moved to line the pipe and flange 6 until the plastic material emerges from the holes 5 in the flange 6. The extrusion pressure may be utilised to move the nozzle or the nozzle may be held stationary and the pressure utilised to move the pipe.
Patent GB-925139-A (GB)
Title: New polycarbonates
Inventor: ROSE JOHN BREWSTER
IPC: C08G64/02
Filed: 1960-10-27
Abstract: New polycarbonates are made by condensing a carbonic acid derivative with a 1:3-cyclobutanediol having the formula <FORM:0925139/IV(a)/1> where R1, R2, R3 and R4 are hydrogen atoms or hydrocarbon radicals, e.g. methyl, ethyl, n-propyl, phenyl or benzyl radicals.  The diol may be in the form of its cis-isomer, its transisomer or a mixture thereof.  The reaction mixture may also include another dihydroxy compound, e.g. a polyethylene glycol.  Catalysts for the reaction are carbonates, hydroxides and cyanides of metals of Group I and II; oxides of metals of Group Ib, II and III; and alkali metal derivatives of carboxylic acids and alcohols.  The proportion of cis-units in the polycarbonate may be increased by heating it to 260 DEG -300 DEG C. with evolution of carbon dioxide.  The polymers are soluble in chloroform and are suitable for the manufacture of cast, pressed, extruded or injection-moulded articles.  In examples, 2,2,4,4-tetramethyl cyclobutane was converted into its di(ethyl carbonate) ester by heating it with ethyl carbonide or ethyl chloroformate (see Group IV(b)).  This ester was then heated with 2,2,4,4-tetramethyl cyclobutane-1,3-diol in the presence of lithium hydride to produce the polycarbonate.ALSO:Intermediates for use in the production of polycarbonate (see Group IV(a)) are bis-(carbonic acid esters) of cyclobutane diols of formula: <FORM:0925139/IV(a)/1> where R1, R2, R3 and R4 are hydrogen atom or hydrocarbon radicals, e.g. methyl, ethyl, n-propyl, phenyl or benzyl radicals.  The diols may be in the form of their cis-isomers, their trans-isomers or mixtures thereof.  The esters may be made by reacting the diols with alkyl or aryl esters of carbonic acid or with chloroformates. Catalysts for the reaction are carbonates, hydroxides and cyanides of metals of Group I and II; oxides of metals of Group Ib, II and III; and alkali metal derivatives of carboxylic acid and alcohols.  In examples, 2,2,4,4-tetramethyl cyclobutane-1,3-diol was converted to its di(ethyl carbonate) ester by heating it with (1) ethyl carbonate in the presence of lithium hydride or (2) ethyl chloroformate in the presence of pyridine.
Patent GB-762060-A (GB)
Title: Improvements relating to colour television system
IPC: H04N11/14
Filed: 1954-12-22
Abstract: 762,060. Television. GENERAL ELECTRIC CO. Dec. 22, 1954 [Dec. 29, 1953], No. 37080/54. Class 40 (3). Simultaneous colour television signals of the type comprising a luminance signal transmitted on a main carrier and a chrominance signal transmitted as phase and amplitude modulations of a sub-carrier (e.g. signals of the N.T.S.C. type) are modified for sequential application to a single-gun colour picture tube. In the arrangement shown in Fig. 3, the luminance component Ey, which is derived from the received composite video signal Em via low-pass filter 3, is supplied to a modulator 15 to which is also supplied a signal of subcarrier frequency derived from the received " burst " signal via gate 5 and utilized to control the production of a wave having this frequency in generator 7 by means of the automatic phase control circuit 6. The sub-carrier signal so generated is supplied to the modulator 15 via a phase-shifting circuit 17 which alters its phase so that it is 127 degrees ahead of the chrominance component carrying the red information and the output of the modulator (the overall gain of which is arranged to be 0.54), which consists of a modified luminance component Ey1, is combined in an adding circuit 41 with the received video signal Em the latter being, preferably, modified by transmission through a step amplifier 4 having a characteristic such that frequencies below 2.5 mc/s. are amplified by a factor of 0.93 and those above 3.0 mc/s. by a factor of unity to emphasize the chrominance signals. Other means for producing this modification may be employed, e.g. the parallel connections of suitable filters and the absolute gains of the modulator 15 and amplifier 4 (or equivalent circuit) may have any valve provided the ratio relative gains are as stated. The output from adder 41 is then supplied via a low-pass filter 42 (having a cut-off at 5 mc/s.) to the control electrode of the picture tube 10 the beam of which is gated under the control of sampling signals at a harmonic of the subcarrier frequency (derived via multiplier 8 and control circuit 9) and the colour production of which is controlled by colour-switching signals derived from a circuit 12 under the control of the generator 7 and supplied to the colour-switching electrode in the tube. Details of a suitable modulator and phase-shifting circuit are described with reference to Fig. 4 (not shown).