baber/WOPTO huggingface dataset:
Patent GB-1432056-A (GB)
Title: Heat treating cured pneumatic tyres
IPC: B29D30/06
Filed: 1973-07-17
Abstract: 1432056 Treating vulcanized pneumatic tyres GENERAL TIRE & RUBBER CO 17 July 1973 [24 July 1972] 34063/73 Heading B7C A vulcanized pneumatic tyre is treated to improve its ride characteristics by supporting the tyre in an upright position such that its rotational axis is horizontal and an area of the tyre at which an undesirable radial force variation would be generated when the tyre is rotating under load against a surface is disposed vertically above the rotational axis, and then applying heat directly to the tyre upon only that portion of the tyre interior surface which is located in the above mentioned area, to reduce the radial force variation. Fig. 1 illustrates apparatus which may be used to carry out the heat treatment comprising a vertical post 11 with a base 12, a horizontal arm 20 secured to the post 11, a heater casing on the arm 20 which consists of a base 26 and side plates 24 and has arcuate members 34 and flanges 36 mounted thereon to receive the beads of the tyre, and an infra-red heater 32 within the casing connected to a time switch 40. The heat treatment may be carried out until the portion of the tyre interior surface to which the heat is applied reaches a predetermined maximum temperature not exceeding 240 F., or for a predetermined period of time not exceeding three minutes. If after the heat tratment the radial force variation is still in excess of what is desired the tyre may then be ground to further reduce the force variation. Specification 1,297,408 is referred to.
Patent GB-1136698-A (GB)
Title: A pipe joint
Inventor: CRESSWELL FRANK
IPC: F16L27/10
Filed: 1967-07-25
Abstract: 1,136,698. Pipe couplings. J. PICKUP & SONS (THERMOSEL PRODUCTS) Ltd. 25 July, 1967, No. 34102/67. Heading F2G. [Also in Division F1] A pipe joint for an exhaust system of an internal combustion engine comprises a tubular joint piece 10 having an intermediate cylindrical portion 11 and opposite end portions 12 and 13 of part-spherical shape and oppositely disposed sleeve members 14 and 15 receiving said end portions, the wall thickness of the joint piece being thin relative to the wall thickness of the sleeve members and the material of the joint piece having a higher coefficient of thermal expansion than the material from which said sleeve members are formed. The sleeve members may be of east iron or mild steel and the joint piece may be of stainless steel. The sleeve pieces may be integral with ends of the pipes to be joined as shown or may be secured to the ends of the said pipes as by welding. The part-spherical ends of the joint piece have a cold fit in the sleeve members ranging from an interference fit to a five thousandths of an inch diametrical clearance fit. In use, the joint piece expands to seal with the sleeve members, ends of the joint piece being deformed during the first use of the joint if the joint piece has an interference fit with the sleeve members. The axial length of the joint piece is less than the distance between shoulders defining the inner ends of the sleeve members thereby allowing axial expansion of the joint piece as well as lateral or angular displacement of the joined pipes. In Fig. 3 (not shown), manifold sections 21, 22 and 23 bolted to a cylinder block 20 are connected together and to an exhaust 24 by tubular joint pieces 10.
Patent GB-498127-A (GB)
Title: Process for the alkylation of paraffin hydrocarbons
IPC: C07C2/62
Filed: 1937-05-25
Abstract: Paraffins having 3 or 4 carbon atoms, particularly isobutane, are alkylated to produce hydrocarbons of gasoline boiling range by treatment with mono-olefines having 3 or 4 carbon atoms at temperatures of approximately 20 to 75 DEG  C. in the presence of zirconium chloride and a minor amount of hydrogen chloride, a molecular excess of the paraffin relative to the olefine being maintained during the reaction.  The reaction may be effected in the manner described in Specification 497,792.  In an example: zirconium chloride is activated by adding a mixture of isobutane and propene in the weight ratio of 3 to 1.  Liquid isobutane is added, and the temperature maintained at about 60 DEG  C. while gaseous propene with about 1 per cent hydrogen chloride is introduced, a pressure of 230 lb./sq. in. being developed.
Patent GB-341173-A (GB)
Title: Improvements in and relating to electric motor vehicles
IPC: H02M3/31
Filed: 1929-11-08
Abstract: 341,173. Converter system for electric vehicles. MASCHINENFABRIK OERLIKON, Oerlikon, near Z³rich, Switzerland. Nov. 8, 1929, No. 34205. Convention date, Nov. 9, 1928. [Class 38 (ii).] Vapour and vacuum or low-pressure apparatus, arrangements of.-Comprises a D.C. to D.C. converter system for electric vehicles, in which D.C. of high voltage is first transformed into A.C. by means of a transformer and rhythmically ionized and quenched valves, and this A.C. then rectified into low voltage D.C. which is used for feeding the driving motors of the vehicle. Assuming the switches to be on the studs 1, the high voltage D.C. is drawn from the supply wire F by a collector E and passes through a choke D to the centre of the primary winding P of a transformer T. The anodes A<1>, A<2> of vacuum valves V<1>, V<2> connect to the ends of the primary winding and the cathodes K<1>, K<2> connect to the rail R which forms the return D.C. circuit. The valves are rhythmically ionized and a single-phase A.C. is induced in the secondary winding S of the transformer T. This A.C. is rectified by a rectifier V the anodes A<10>, A<11> of which are connected to tappings from the secondary winding S by contacts B<1>, B<2> and the cathode connected to the centre point X of winding through the motors M<1>, M2 and choke coil D. By moving the switches to contact studs 2 the arrangement becomes a regenerative brake. The motors work as dynamos and supply low voltage D.C. which is converted to high voltage D.C. and fed back to the line. A second quenching condenser C2 and damping resistance R<11> is provided and also a D.C. source Q for the separate excitation of the motor fields. It is necessary to use valves which will function with high voltage low current D.C. and also with low voltage high current D.C. Reference has been directed by the Comptroller to Specification 219,025, [Class 38 (ii), Electric currents, Converting &c.].
Patent GB-830090-A (GB)
Title: Instruments for developing an electrical potential dependent on barometric pressure
IPC: G05D1/04
Filed: 1957-11-01
Abstract: 830,090. Change-speed gearing; toothed gearing. GARRETT CORPORATION. Nov. 1, 1957 [Nov. 1, 1956], No. 34210/57. Classes 80 (1) and 80 (2). [Also in Groups XXIX and XXXVIII] In an electro-pneumatic device sensitive to changes in barometric pressure (see Groups XXIX and XXXVIII) the pneumatic output generates the electrical signals via an infinitely variable-speed device, and feed-back to restore the pressure-sensitive unit to its null position occurs via a non-linear gear train. Variable-speed device.-The pneumatic pressure produces axial movement of the rod 96 (Fig. 5), causing the link 102 to pivot about 105. Two further links 106 attached at 110 are then pulled sideways to move the balls 116 across the faces of the gears 125 and output member 130 (Fig. 7). In the null position the balls are in line with the axes of the gears 125 and no drive is transmitted. Movement of the balls in one direction or the other causes corresponding transmission of drive to the member 130 and thence via the friction clutch 140 to the shaft 150. Non-linear gearing.-The shaft 150 (Fig. 6) drives the output shaft 161 via step-down gearing which includes a pair of non-circular gears 155, 156 to give a non-linear speed relationship between input and output. The clutch 140 (see above) slips before rotation becomes excessive and the gears come out of mesh.
Patent GB-521671-A (GB)
Title: Improvements in apparatus for grading articles by weight
IPC: B07C5/22
Filed: 1938-11-24
Abstract: 521,671. Grading eggs &c. by weighing. PHILADELPHIA METAL WORKS. Inc. Nov. 24, 1938, No. 34244. Convention date, March 3. [Class 143] [Also in Group XXX] In an apparatus for grading eggs, packaged foods, fruit or other articles by weight, the eggs &c. are progressively moved over a series of weighing devices by a plurality of reciprocating arms provided at their free ends with pusher elements, the arms being connected to a pair of reciprocating bars one of which lags behind the other so that the pusher elements are raised and lowered at the ends of their stroke to relinquish and engage the eggs. The eggs placed in an inclined shoot 55, Fig. 1, are fed successively as described below, to a platform 11, and are pushed along the platform by cupshaped members 39 so as to bring the eggs successively on to scale pans 12, 13, 14 and on to a final discharge plate 15. The heaviest eggs tilt the first scale pan 12 and are discharged into a compartment 75a, the lighter eggs are discharged according to weight into compartments 75b ... 75d. The weighing units are locked except during the weighing periods, by detents 48 depending from a reciprocating slide 45. In a modification, Figs. 11, 12, (not shown) the weighing units are locked by clamping the ends of the weighbeams within inclined slots in a cam-operated slide. The cups 39 for pushing the eggs along the platform 11 are secured to bell-crank levers 36, 37, Fig. 3, mounted by pivots 34 on a slidable bar 25. A shifting member 31 reciprocated by a motor 26a and bent connecting-rod 30 is suspended by pivots 38 from the bell-crank levers 36, 37 the arrangement being such that owing to the lag in the movements of the slidable bar 25 the cups 39 are raised and lowered at the ends of the reciprocations to relinquish and engage the eggs. In a modification, Fig. 13 (not shown), the cups 39 engage the tops of the eggs and are carried on resilient portions of the bell-crank levers 36, 37 to avoid damage to the eggs. Article-feeding devices. The eggs &c. are fed singly to the grading platform 11, Fig. 6, by two stop members 59, 64 projecting from a lever 60 pivoted on a pin 61 and caused to rise and fall by cam and slot mechanism actuated by the. reciprocating bar 25. When the lever 60 descends, the stop 59 permits the foremost egg A to roll on to the platform 11. The remaining eggs B, C &c. are retained by the stop 64 which is of inverted U-shape so as to permit these eggs to roll down to the stop 59 when the lever 60 ascends. In a modification, Fig. 9, a cam projection 80 on the reciprocating bar 25 actuates a lever 83 carrying a stop 95 and an actuating member 97. The actuating member 97 raises and lowers a U-shaped stop 88 supported on pivots 92 the action being similar to that described in connection with Fig. 6.
Patent GB-927073-A (GB)
Title: Improvements relating to open electric furnaces and to methods of smelting a charge in such furnaces
IPC: F27D17/00
Filed: 1960-10-06
Abstract: 927,073. Removing gases in industrial processes. ELEKTROKEMISK A.S. Oct. 6, 1960 [Oct. 15, 1959; April 6, 1960], No. 34266/60. Class 8(2). An open electric furnace comprises an openbottomed gas-collecting chamber a wall of which is spaced from and surrounds at least one electrode, the chamber being so supported that when the furnace is charged at least a part of the lower edge of the chamber wall is spaced vertically above the charge surface. In a single phase furnace shown in Fig. 1 an electrode 4 is provided with contact clamps 6 supplied by current by means of water-cooled copper pipes (not shown) and fixed to a watercooled electrode suspension casing 11, the clamps being pressed by devices such as spring-loaded, adjustable bolts 8 provided on a gas-collecting chamber 7. Alternatively, adjustable hydraulic devices may be used to press the clamps, and the devices may be mounted on a pressure ring fixed to the chamber 7. The latter and a gas exhaust pipe 12 into which it leads are adjustably suspended by wires 16 for movement with the electrode 4, the pipe 12 being connected to a stationary exhaust pipe 14 by, for example, a water seal 15. The chamber 7 may be arranged eccentrically of the electrode and its lower rim may slant so that the part thereof below the exhaust pipe 12 is nearest the charge. In a three phase furnace, Figs. 3 and 4 (not shown), the gas-collecting chamber is in three sections respectively surrounding three triangularly disposed electrodes, the chamber also covering the central part of the furnace. The chamber sections are insulated from each other and from the electrodes, the latter being movable relative to the chamber which is itself movably suspended, e.g. by counterweights. A gas exhaust pipe is located at the central part of the furnace and into this pipe is introduced at intervals a part of the course material of the charge so that the exhaust pipe is kept clean of precipitated dust &c. One or more separate charging pipes may also be provided at the central part of the furnace. For better suction effect the gas-collecting chamber has its lower rim made slanting so that it is nearer the charge at the centre of the furnace than at the outside of the chamber, and the parts at the centre may project into the charge. To reduce the temperature of the gas in the chamber, exhaust gas which has been cleaned may be recirculated through the chamber. The amount of gas exhausted is preferably adjusted by a variable speed fan so that some of the gas will escape below the chamber rim. The gas-collecting chamber may be used as a waste-heat steam boiler, and it may also be used in furnaces in which the furnace pot is rotatable relative to the electrodes and the chamber.
Patent GB-369646-A (GB)
Title: Electrical adjustable resistance
IPC: H01C10/38
Filed: 1930-11-17
Abstract: 369,646. Wire variable and selfsupporting resistances. ULITOWSKY, A., 1, Moshkow per, Leningrad. Nov. 17, 1930, No. 34614. [Class 37.] In a variable electric resistance suitable also for heating purposes, in order to provide improved heat dissipation strips of conducting material 2, forming the main resistance, are laid parallel to the axis on a cylindrical ceramic former 1 and a layer of comparatively high resistance wire 3 is wound helically on the strips, individual turns of the wire being insulated by an oxide coating but being in conductive contact with the underlying strips. Alternatively, the strips may be replaced by a sheet of metal or a layer of conducting material 9a, Fig. 5, or the overlying winding may be formed by winding two wires 3, 3a together, one of which, 3a, is bare and the other oxide-coated all over. In a modification the central core is dispensed with and the conducting strips are radially mounted between insulating end-pieces so as to form a polygonal frame on which the overlying layer is wound as before or in the form of a basket-like braid, clearance being allowed between turns. Connection is made from the supply to the underlying strips which may be of thin platinum wire or material known under the registered Trade Mark " Nichrome " in a modification used as a furnace heating element. When used as a variable resistance a slider mounted on a bar in the usual way bears on the surface of the layer 3 and makes contact through it or through the base wire 3a, with the main resistance strips. The layer 3 may consist of strip material wound on edge. Terminals mounted on the end supports of the resistor make connection to the slider bar and through end rings 4<1> with the underlying resistance strips.
Patent GB-511351-A (GB)
Title: Gas-tight doors or shutters for openings of anti-air-raid chambers
IPC: E06B5/14
Filed: 1937-12-15
Abstract: 511,351. Gas-tight doors and shutters. DIETEL R., and MANNESMANNROHRENWERKE. Dec. 15, 1937, No. 34728. Convention date, Dec. 15, 1936. [Classes 20 (iii) and 107] A gas-tight door or shutter for the openings of air-raid or like chambers comprises a fixed frame 4 united to the surrounding masonry by a gastight joint, and a door leaf 5, preferably of metal, which is pressed against the frame by means of anchor bolts 9, 15, which at their ends remote from the frame are anchored in the masonry while their other ends pass freely through the frame, sealing composition being applied in a groove 7 extending around the face of the door leaf and/or the fixed frame to preserve gas-tightness. In the construction shown, the bolts are secured by nuts 10 and wall plates 11, and brass sleeves may be provided on the bolts where they pass through the fixed frame to prevent rusting, while the stems of the bolts may be coated with paint to prevent them becoming fixed in the masonry. The heads of the bolts are formed with slots 13 for the reception of keys or wedges 14 which serve to secure the door leaf against the fixed frame. The sealing composition may be forced into the groove 7 by means of pressure-feed devices such as " Stauffer " boxes 8 mounted at the corners of the door leaf. The heads 16 of the bolts 15 on the hinged side of the door leaf carry the hinge pin 6, the middle portion of which is set eccentrically in relation to the end portions, in order that when the door is closed, the hinge-pin may be rotated by a suitable handle to press the door leaf tightly against the fixed frame. When not in use, the metal leaf 5 may be turned back and the opening closed by a glass window and/or a vermin-proof or insect-proof shield which may be mounted on hinges provided on the frame 4. The Specification as open to inspection under Sect. 91 comprises a modification, Fig. 3 (Cancelled), in which the locking keys 14 are of arcuate formation and are provided on handles pivotally mounted on the door leaf, and also includes the subject-matter of Specification 511,352. This subject-matter does not appear in the Specification as accepted.
Patent GB-1197137-A (GB)
Title: Substituted Indanones and their Preparation and Reactions
Inventor: WENDLER NORMAN LORD
IPC: C07C45/42
Filed: 1968-07-22
Abstract: 1,197,137. 5,7-Dialkoxy-1-indanone derivatives. MERCK & CO. Inc. 22 July, 1968 [26 July, 1967], No. 34775/68. Heading C2C. Novel compounds I in which R is C 1-6  alkyl and X is (i) hydroxyimino, (ii) benzylidene, (iii) oxo, or (iv) paratoluenesulphonyloxyimino, are obtained: (i) by treating a 5,7-dialkoxy-1-indanone with an alkyl nitrite in the presence of an acid or base; (ii) by reacting the dialkoxy-indanone with benzaldehyde in the presence of an aqueous base; (iii) by hydrolysing the hydroxyimino compound with concentrated mineral acid in the presence of formaldehyde, or by treating the benzylidene compound with ozone in an alkanolic solvent; and (iv) by reacting the hydroxyimino compound with para-toluenesulphonyl chloride. 2 - Formyl - 4,6 - dimethoxybenzoic acid (also described in the form of the sodium salt) is prepared by treating 3-methyl-6,8- dimethoxyisocoumarin (obtained by cyclizing 2-carboxy-3,5-dimethoxyphenyalcetone) with ozone followed by hydrogenation of the resulting mixture. The 2-carboxy starting material is prepared by heating 3-acetoxy-4-acetyl-6,8-dimethoxyisocoumarin with aqueous sodium hydroxide and acidifying the reaction mixture; the 3-acetoxy compound results from the interaction of 3,5-dimethoxyhomophthalic acid (obtained by treating 5,7-dimethoxy-1,2-indandione, (iii) above, with hydrogen peroxide in the presence of acetic acid or by hydrolysing 2-carboxy-3,5-dimethoxyphenylacetonitrile; the nitrile is derived from the para-toluenesulphonyloxyimino compound, (iv) above, utilizing 20% aqueous potassium hydroxide) and acetic anhydride.
Patent GB-1371445-A (GB)
Title: Cooling apparatus for slabs
IPC: C21D1/63
Filed: 1972-07-25
Abstract: 1371445 Cooling metal slabs BWG BERGWERK-UND WALZWERK-MASCHINENBAU GmbH 25 July 1972 [24 Nov 1971] 34814/72 Addition to 1301509 Heading C7N A water tank 6 is divided into parallel transverse compartments by a frame formed of tines 9 mounted on longitudinal beams 8, the frame serving to support slabs 1 which are charged and discharged by lifting mechanisms 15 mounted on gantry 11 running on rails 10. Each mechanism comprises a gripper 14 having two parallel pockets 16 transverse to the tank and spaced apart a distance corresponding to that of the tank compartments, the pockets being independently closable so that in a single operation a hot slab is deposited into one compartment while a cooled one is removed from the adjacent compartment.
Patent GB-760729-A (GB)
Title: Improvements in or relating to spectroscopes
Inventor: SINGLETON FRANK
IPC: G01J3/433
Filed: 1953-12-16
Abstract: 760,729. Electric spectrometers. GRAESSER, Ltd., R. Dec. 16, 1954 [Dec. 16, 1953], No. 35112/53. Class 40 (3). [Also in Group XL (c)] . The resolution of a spectrometer of the type in which a radiation sensitive device such as a bolometer produces an electric output which varies in intensity with radiation transmitted by the specimen is improved by differentiating the output signal an even number of times, preferably twice. Fig. 1 indicates how the two adjacent peaks are clearly separated in the differentiated signal although obscured in the direct signal. If the logarithm of the output is also taken before differentiation the amplitude of the resolved peak will then directly indicate the density of the components present when compared with the amplitudes of the absorption maxima in the corresponding curve obtained from a known of the component. The invention is described with reference to a single beam spectrometer in which the output is chopped at 16 <2>/3 cycles/sec. As shown (Fig. 3) the output of the spectrometer is applied through a filter to remove signals due to the 50-cycle mains. A sinusoidal current is produced in resistors 1, 2 and the potential across resistor 2 is amplified and inverted by high-gain pentode 7, impedance transformed by cathode follower 8 and applied through a negative feedback loop comprising logarithmic rectifiers 3 to the junction of resistors 1, 2. A log-sine voltage derived from the input to the rectifiers is applied to phase splitter 4 rectifier 5 inverter amplifier comprising pentode 6 and triode 9 and fed to two differentiating circuits each as shown in Fig. 4. Resistor 10 may replace the rectifier to give a linear output. The differentiating circuits each consist of a condenser 12 the series impedance of which is constituted by a cathode follower 16. The output signal is tapped across an anode load. Error voltages at the cathode may be reduced to negligible levels by means of a high-gain amplifier 17. The grid of this valve samples voltage " changes " at the cathode, amplifies them and applies them inversely to the grid of the cathode follower. The Provisional Specification described an alternative logarithmic circuit (Fig. 3, Provisional Specification) consisting of a thermionic diode which has an exponential relationship between diode current and the voltage change between anode and cathode. The applied voltage is phase split at 3, rectified at 6 and fed through a 10-20 megohm resistor to the diode so that a logarithm of the applied voltage v appears at the anode. However, a steady voltage s due to electrons reaching the anode by virtue of their velocity also exists at the anode. The steady voltage is corrected for by taking the log output to the grid of a cathode follower 7 so that the cathode is at s to earth and varies in potential with the log. The cathode output potential is then fed through diodes 10 to restore the applied A.C. signal to the level - s + v.