baber/WOPTO huggingface dataset:
Patent GB-721950-A (GB)
Title: Improved method for the synthesis of pantothenic acid-4 phosphate
Inventor: BADDILEY JAMES
IPC: C07F9/09
Filed: 1951-10-26
Abstract: Pantothenic acid-41-phosphate is obtained by reacting an aralkyl ester of pantothenic acid with a phenyl di-halogeno-phosphinate in the presence of an anhydrous tertiary base, subjecting the resulting aralkyl ester of pantothenic acid to hydrogenation, e.g. in the presence of palladium oxide, followed by hydrogenolysis, e.g. in acetic acid, or alkaline hydrolysis, e.g. by the action of any alkali or alkaline earth base, to remove the aralkyl and phenyl groups and thus produce pantothenic acid-21,41-phosphate, and subjecting the said pantothenic acid-21,41-phosphate to alkaline hydrolysis so as to produce pantothenic acid-41-phosphate. As the tertiary base may be used pyridine, and when the phenyl dihalogeno-phosphinate is added the temperature is preferably maintained in the range -40 DEG  to 20 DEG  C.  In an example, benzyl pantothenate is reacted with phenyl dichlorophosphinate.
Patent GB-1287719-A (GB)
Title: Drive system for an inertia friction welder
IPC: B23K20/12
Filed: 1971-04-19
Abstract: 1287719 Welding by pressure CATERPILLAR TRACTOR CO 19 April 1971 [13 April 1970] 25167/71 Heading B3R [Also in Division B5] A machine for friction welding two parts WP-1, WP-2, of unspecified material, comprises a rotatable spindle 46 for holding the part WP-1, a flywheel 25 mounted for rotation with the spindle 46 for storing the energy required to produce the weld, a non-rotatable fixture 17 for holding the part WP-2, loading means 21, e.g. hydraulic rams, for moving the parts WP-1, WP-2 into engagement under welding pressure after the spindle 46 and the flywheel 25 have been accelerated to the desired rotational speed, and hydraulic drive means for accelerating the spindle 46 and the flywheel 25, the hydraulic drive means including a plurality of constant displacement fluid motors 38, 40, 42, 44 each connected in drive relation to the spindle 46, a pump connected to supply fluid to the motors 38, 40, 42, 44, and control means for supplying fluid from the pump in parallel to all of the motors at the start of rotation of the spindle and for sequentially discontinuing the supply of fluid to selected ones of the motors as the spindle is accelerated for rapid acceleration of the spindle. As shown, the machine is a double-ended welder and the spindle 46 holds two parts WP-1, WP-3 to be welded to parts WP-2, WP-4, respectively, held by fixtures 17. Four constant displacement motors 38, 40, 42, 44 are provided to drive the spindle 46 through gears 48, 52. In operation, at the start, fluid is delivered by the pump to all four motors so that the starting torque is high and the spindle is accelerated quickly. When the spindle reaches a predetermined velocity, a speed sensitive switch (not shown) causes the motor 44 to be shut off from the fluid supply. Similarly, at second and third predetermined velocities, the motors 42, 40, respectively, are shut off. When the spindle 46 reaches welding velocity, the motor 38 is shutoff. The hydraulic rams 21 are actuated to thrust the parts WP-2, WP-4 into contact with the parts WP-1, WP-3 until the welds are completed as the spindle 46 comes to a stop. An hydraulic circuit for the operation of the machine is described, Fig. 3 (not shown).
Patent GB-337731-A (GB)
Title: Improvements in gramophone records
IPC: G11B3/70
Filed: 1929-07-03
Abstract: 337,731. Hordern, H. C. S., Hordern, A. A., and Lynes, B. J. July 3, 1929. Divided om 333,919. Disc records.-A recording blank 1 for use in the magazine machine described in Specification 333,919, is provided with means, such as a stamped-up portion or a washer 3 of paper, fibre, or the like, to space it from the next blank in the pile, and with perforations 2 adapted to engage with pins on the rotor to provide a positive drive.
Patent GB-470885-A (GB)
Title: Improvements in or relating to electronic apparatus for television systems and the like
IPC: H01J29/86
Filed: 1936-09-16
Abstract: 470,885. Glass manufacture. CORNING GLASS WORKS. Sept. 16, 1936, No. 25246. Convention date, July 18. [Class 56] [Also in Group XL] The envelope of cathode-ray apparatus has a blown glass part fused to a part formed in a moulding press to ensure optical accuracy so that distortions of a picture viewed or projected through a window in the pressed part are avoided. The envelope of an iconoscope is formed from a blown cylindrical part 16, a pressed part 19 with a flat window 18 and with a protuberance 21 ground off at 17 and a cylindrical part 23. The peripheries of the parts 16, 19 are ground, sanded and sealed together and the part 23 is sealed at 17 to the part 19. A television receiver tube has a flat or curved pressed end part sealed to the end of the blown conical part of the envelope.
Patent GB-671540-A (GB)
Title: Improvements in and relating to washing machines
IPC: D06F39/08
Filed: 1950-10-17
Abstract: 671,540. Washing-machines. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 17, 1950 [Oct. 21, 1949], No. 25282/50. Class 138 (ii). A clothes-washing machine of the type having a tub containing a basket in which the clothes are washed and spin dried and provided with means for introducing water into the basket, comprises an agitator in the basket having a tubular post extending to above the maximum operational water level of the basket and having inflow ports at vertically-spaced locations, means providing a water passage communicating between the tubular post and tub, a valve seat at the entrance to the water passage below the lowermost of the inflow ports, and a tubular valve element disposed within the agitator post for axial movement therein and extending to the uppermost of the ports and having at its lowermost end an annular valve element seatable within the valve seat when it is desired to effect communication between the uppermost agitator ports and the water passage and removable from the valve seat when the lower inflow ports are to be rendered effective. In the arrangement shown, as applied to a machine of the type disclosed in Specification 551,907, in which the water supply to a basket 3 is cut off by a float switch 8, 9 when the water reaches a predetermined level in the basket and overflows through an agitator 4 to the bottom of a tub 1, the agitator 4 comprises a hollow body post 17 having water inflow openings 27 and 28 and is secured to a shaft 14 which during a washing operation is oscillated by mechanism in a casing 2. A hollow shaft 10 surrounding the shaft 14, carries a hub 11 which is secured to a balance ring 13 carrying the basket 3. The agitator body post 17 communicates with the tub 1 through one or more openings 22 and openings 23 and 24, respectively, in the basket 3 and ring 13. A flexible boot 25 defines the water-passage between the post and tub. A tubular valve seat 30 secured to an extension 20 of the hub 11 extends to the opening 28 where it co-operates with a valve plug 35 of a valve tube 34, which latter extends above the lower edge of opening 27, through which the tube is raised by the operator to disengage the plug 35 from the tube 30. The plug 35 may be formed with inwardly-projecting fingers 37 which grip the shaft 10. In a modification, Fig. 4 (not shown), the valve comprises a single tube having an annular plug at its lower end which co-operates with a valve seat formed on the extension 20. The tube may be positioned within the post 17 by flanges on the tube, and spring fingers on the inner wall thereof may be provided to co-operate with annular grooves on the shaft 10 corresponding to the open and closed positions of the valve.
Patent GB-420400-A (GB)
Title: An improved small synchronous motor
IPC: H02K19/06
Filed: 1933-09-13
Abstract: 420,400. Motors. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Sept. 13, 1933, No. 25320. Convention date, Nov. 24, 1932. [Class 35] Motors with unwound iron armatures.-A synchronous motor with a toothed unwound disc operating in a rotary magnetic field has means for bringing the rotor to rest in one of a series of predetermined positions to ensure self starting. As shown, the toothed rotor 16 and the detent wheel 27 are moved axially by the spring 29 when the coil 15 is de-energized and are caused to occupy one of a number of predetermined positions by the pin 28 which is secured to the copper plate 13. In an alternative form the wheel 27 is fixed and the pin is moved away therefrom against a spring or gravity by magnetic flux when the motor is energized. In a further modification, the rotor or a separate toothed wheel on its shaft is biassed to one of a number of predetermined positions by a fixed permanent magnet on stopping.
Patent GB-318861-A (GB)
Title: Improvements in or connected with power raising, lowering and like adjusting devices for implements and machines
IPC: A01B63/06
Filed: 1929-08-20
Abstract: 318,861. Smithco Friction Lift Proprietary, Ltd. Sept. 10, 1928, [Convention date]. Driving auxiliary parts. - A powerdriven device for raising, lowering, or adjusting an implement or machine drawn by a tractor, or a part of such an implement or machine, comprises a shaft coupled to a power-take-off shaft on the tractor, a worm on the shaft, a worm wheel meshing with the worm and having either one or two cranks or eccentrics associated therewith, link connections between the crank or cranks and a, lever or levers pivoted at the rear of the trailer, a connection between the levers and an adjustable part of the implement or machine, reversing bevel gearing for driving the worm from the shaft, and a manually operated device for moving a .clutch for controlling the reversing gearing. The levers 10 are attached to a rock shaft 9 mounted in a two-part casing 7 having a removable cover. The levers are connected together by a perforated rocking bar 11 which is connected by an adjustable rod 14 with the lifting-lever of a plough &c. The levers 10 are linked to cranks or eccentrics 21 on a spindle 28 driven by worm gearing 27, 26 and reversing bevel gearing 23, 24 from a shaft 20 coupled to the longitudinal power-take-off shaft 20<1> and provided with thrust bearings 42. The worm 26 is rigidly connected to the forward bevel pinion 23 and a clutch member 29 has conical ends to engage corresponding recesses in bosses 32 on the bevel pinions. The clutch is operated by a fork lever 38 connected by a rod 37 to a hand-lever 36 mounted on the central pivot pin of a foot-lever 30, which is provided with centralizing springs 35. The lower part of the casing 7 is partially filled with oil. In tractors having a power-take-off shaft projecting laterally the shaft 20 is connected to it by bevel gearing.
Patent GB-782004-A (GB)
Title: Improvements in and relating to electric circuits
IPC: G06G7/19
Filed: 1955-09-02
Abstract: 782,004. Simulation of networks having a given frequency response. KOKUSAI DENSHIN DENWA CO., Ltd. Sept. 2, 1955 [Sept. 8, 1954], No. 25340/55. Class 40 (4). An electrical network is simulated by equipment designed to produce an output from an input e 1 (t), h(#) being the impulse response of the desired network. The output in practice is produced by evaluating this integral repeatedly to provide samples in the form of pulses spaced at intervals of less than t<SP>1</SP>, where t<SP>1</SP> # 1/2W, where W is the band-width of the input. Since the impulse response, Fig. 2a, in general assumes non-zero values over a period T > t<SP>1</SP> a compression system is incorporated. Thus in one embodiment, Fig. 1, the input signal e1(t) is recorded on a moving tape 3 and scanned by a reproducing head 4 rotating once during each time interval t<SP>1</SP> and arranged during that time to scan the whole of the signal recorded on the tape in time T. Thus in the input signal represented in Fig. 2b, the portion a<SP>1</SP>, b<SP>1</SP> is compressed and reversed in time to produce an output b1<SP>1</SP>, a1<SP>1</SP>, Fig. 2c. Similarly portions a2, b2... are reproduced as b2<SP>1</SP>, a2<SP>1</SP> ... The generator 6 is arranged to produce the impulse function also compressed into time t<SP>1</SP>, Fig. 2d. The two outputs, Figs. 2c, 2d, are then fed to a multiplier 5 whose output feeds an integrator 7. The latter is arranged to be discharged at the end of each interval t<SP>1</SP> to produce pulses, Fig. 2e, which are fed to the low-pass filter 8 to produce the required output e2(t). In a modification., Fig. 3 (not shown), the reversed and compressed input waveform is derived by writing the signal on a cathode-ray storage device and reading it off in the reverse direction at increased speed. In a further embodiment, Fig. 4, the signal is fed to a delay line D having tappings scanned in reverse direction at the appropriate speed, the output of the scanner S being fed, together with the impulse function from the generator 6, to a multiplier. 5, an integrator 7 and filter 8. In a modification, Fig. 5, the tappings of the delay line feed individual multipliers M1 ... M N  which are fed successively by appropriate values of the impulse function from the generator 6. In this case the intermediate step of producing a pulse at the end of each sequence is omitted, the outputs of the multipliers being fed direct to the low-pass filter 8.
Patent GB-834258-A (GB)
Title: Method of dehydrogenation and catalyst therefor
IPC: C07C5/32
Filed: 1956-08-20
Abstract: A dehydrogenation catalyst contains by weight 51-59% potassium carbonate, 39-47% iron oxide, and 1-10% chromium oxide.  The catalyst is suitable for conversion of monoolefins to di-olefins, alkyl pyridines to alkenyl pyridines, and alkyl aromatic hydrocarbons to alkenyl aromatic hydrocarbons (see Group IV (b)). To prepare the catalyst, the ingredients may be milled together, pelleted, dried and calcined; alternatively the components may be made into a paste with water or dilute tannic acid solution and the paste extruded.  The catalyst may also be made by coprecipitation, impregnation, or thermal decomposition of nitrates.  In dehydrogenation reactions the catalyst shows increased selectivity and the same yield at lower temperatures, as compared with catalyst containing less potassium carbonate.ALSO:The dehydrogenation of mono-olefins to diolefins, alkyl pyridines to alkenyl pyridines, and alkyl aromatic compounds to alkenyl aromatic compounds is carried out in the presence of a catalyst containing by weight 51-59% potassium carbonate, 39-47% iron oxide, and 1-10% chromium oxide (see Group III). Dehydrogenation may take place in the vapour phase at 1050-1300 DEG  F. in the presence of 1-20 mols. of steam per mol. of reactant. Atmospheric or elevated pressure may be used.  Reference is made to the conversion of butene to butadiene, pentene to pentadiene, ethyl benzene to styrene and 2-methyl-5-ethyl pyridine to 2-methyl-5-vinyl pyridine.  Addition of carbon dioxide to the feed reduces migration of the potassium compound through the catalyst bed.  The catalyst shows increased selectivity and the same yield at lower temperatures, as compared with catalyst containing less potassium carbonate.
Patent GB-286176-A (GB)
Title: Improvements in or relating to compensating arrangements for use in connection with amplifying circuits
IPC: H03G7/00
Filed: 1927-09-26
Abstract: 286,176. Hofmann, J. Sept. 26, 1927. Thermionic amplifiers. - An arrangement for compensating for variations in strength of oscillatory current in wireless signalling on telephone repeaters comprises a solenoid having an exciting winding OW and polarizing means, e.g. winding IW and battery, to render the flux in the core MC uni-directional, and inductive means, e.g. the closed low-resistance winding IW, to retard the falling away of the magnetic flux. The movable core IW actuates a regulator, e.g. the resistance VR in series with the amplifier output L3, L4 to compensate automatically for variations in the amplitudes of the currents. The Figure shows the application of the regulator for a wireless telephone transmitter in which the regulator is inserted between the microphone amplifier AP and the wireless transmitter SA. To maintain the amplification of the amplifier AP constant a hot air exhauster HAE may be provided.
Patent GB-268667-A (GB)
Title: Compressed air sand conveying plant
IPC: B65G53/12
Filed: 1926-10-14
Abstract: 268,667. Percival, S., (Maschinenfabrik L. NAGEL). Oct. 14, 1926. Pneumatic conveyers. - Sand is forced from a conical-roofed receptacle 2 through a pipe 3 by compressed air supplied through a nozzle 1 having lateral outlets.
Patent GB-751013-A (GB)
Title: Improvements in combustion devices particularly applicable to aircraft jet propulsion units
Inventor: RACINE GILBERT
IPC: F23R3/00
Filed: 1953-09-16
Abstract: 751,013. Generating combustion products under pressure. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Sept. 16, 1953 [Sept. 20, 1952; June 27, 1953], No. 25628/53. Class 51(1). In combustion equipment, for example for reheating the exhaust gases of a jet propulsion engine or for reheating the gases between stages of a gas turbine engine, in which fuel is to be burned in a high velocity stream of combustion supporting gas, nozzle means open into the stream at a substantial angle to the direction of flow thereof for forming a screen-like jet or a number of separate jets transverse to the main stream. The nozzle means are supplied with air or other gas under pressure into which fuel has been injected and the jets form a sheltered zone in which combustion can occur. In Fig. 1 a hollow aerofoil section ring 4 formed with a continuous slot 8 is disposed around the fuel injector 1 and is connected to a source of air or gas under pressure to which fuel has been added. The air and fuel mixture issuing through the slot 8 forms a bowl-shaped screen as indicated by the arrows f and a turbulent zone f 1  forms downstream thereof. The ring 4 is secured to the injector 1 by means of radial struts 5. In Fig. 2 the gaseous screen f is formed by means of a hollow member 4 disposed upstream of the injector 1, the injector discharging in an upstream direction. In a reheat system of a jet propulsion engine, fuel injectors are disposed annularly in the jet pipe and each is associated with a hollow ring as shown in Fig. 1, the rings being interconnected by a manifold. In Fig. 4 a hollow ring 4 is disposed downstream of the injector 1, the ring being formed with a continuous slot 8 on its inner surface. Air or gas is supplied to the ring through the duct 6 and fuel is injected into the duct at la. The air and fuel issues through the slot 8 to form a gaseous baffle as indicated at f. In Fig. 5 gas discharge slots 8 are formed in the hollow radial arms 10 which are connected centrally to a hollow body 11 supplied with air or gas under pressure through a duct 6. Fuel is supplied by injector 1a in the duct 6 and further fuel may be supplied by injectors 1. The slots 8 do not extend right to the wall of the chamber 3 so as to permit an insulating sheath of gas 12 at relatively low temperature to flow along the wall. In the exhaust reheat combustion equipment shown in Fig. 7 air or gas under pressure mixed with fuel issues through orifices 8, or through an annular slot in the inner cone 24. Specification 751,098 is referred to.
Patent GB-1220747-A (GB)
Title: Ampicillin
IPC: C07D499/68
Filed: 1968-05-29
Abstract: 1,220,747. Ampicillin. AMERICAN HOME PRODUCTS CORP. 29 May, 1968 [31 Jan., 1968], No. 25712/68. Heading C2A. The tetrahydronaphthalene sulphonic acid addition salt of D-6-(2-amino-2-phenylacetamido) penicillanic acid is prepared by treating an aqueous solution of D-6-(2-amino-2-phenylacetamido) penicillanic acid, or a water-soluble salt thereof, with tetrahydronaphthalene sulphonic acid or a water-soluble salt thereof and adjusting the mixture to pH 1.0 to 3.5. The anhydrous crystalline form of D-6-(2-amino-2- phenylacetamido) penicillanic acid is prepared by heating at 50‹ to 100‹ C. a mixture comprising (A) the tetrahydronaphthalene sulphonic acid addition salt of D-6-(2-amino-2- phenylaeetamido) penicillanic acid, (B) at least about 1 equivalent, based on said salt, of an amine of general formula wherein R, R<SP>1</SP> and R<SP>2</SP> are the same or different and each is hydrogen, C 1 -C 6  alkyl, or phenylsubstituted C 1 -C 6  alkyl, and (C) a reaction medium comprising (1) a water-miscible organic solvent which is miscible to an extent that it will retain 5% by volume of water in solution and which is present in an amount of at least 20% by volume of said medium, and (2) sufficient free water to bring the total amount of bound and free water in the mixture to at least 10% by weight based on the solids present. The tetrahydronaphthalene sulphonic acid has the formula wherein the sulphonic acid group is fixed in either the α- or #-position, and mixtures of these isomers may be used. Specifications 873,049 and 1,003,868 are referred to.
Patent GB-621150-A (GB)
Title: Improvements in or relating to magnetic cores used as coil holders in oscillating circuits
IPC: H01F17/04
Filed: 1946-08-28
Abstract: 621,150. Inductances. MARROTTE DE MONTIGNY, M. V. G. B. DE Aug. 28, 1946, No. 25721. Convention date, Dec. 15, 1943. [Class 38 (ii)] A high-frequency powdered magnetic core for a coil is formed from at least two parts which make contact at two surfaces generated by the movement of a line which remains parallel to the direction of movement of the two parts when they come together. A pot-shaped magnetic dust core is made in two parts 1, 2, the outer rims 16, 26 of which engage in a spigot- and-socket joint, while the central parts 1a, 2a engage at flat surfaces 4 as shown, or in another spigot-and-socket joint. The invention may be applied to pulley and rod-shaped cores. The Specification as open to inspection under Sect. 91 comprises also high-frequency inductances in which the coil is shaped differently from the core cavity so that it makes only line or small contact with the core. This subjectmatter does not appear in the Specification as accepted.