baber/WOPTO huggingface dataset:
Patent GB-638938-A (GB)
Title: Improvements in or relating to the crystallization of penicillin
IPC: C07D499/18
Filed: 1947-11-18
Abstract: Substantially pure crystalline sodium or potassium salts of penicillin (usually comprising substantially the penicillin G salt) are manufactured by treating an amorphous sodium or potassium penicillin salt with acetone and a small amount of water (e.g. about 1-6 per cent by volume, preferably about 2 per cent in the case of the sodium salt and about 4 per cent in the case of the potassium salt), whereupon the amorphous salt first dissolves and then precipitates in substantially crystalline form, separating the precipitate, dissolving it (preferably after washing with anhydrous acetone) in acetone and a substantial amount (e.g. about 7-20, preferably about 10 per cent by volume) of water, and reducing the relative amount of water in the aqueous acetone solution (e.g. to about 1-5, preferably about 3 per cent by volume), thereby precipitating the purified crystalline penicillin salt, which may be separated, washed (e.g. with acetone or successively with u-butanol and acetone), and dried (e.g. in vacuo).  The reduction of the relative content of water in the second solution (which is preferably preceded by treatment with a small amount of a decolorizing agent such as activated carbon, and filtration to remove the latter with adsorbed impurities) may be effected by exposing the vapour of the solution in a closed system to the action of a dehydrating agent, or preferably by adding to the aqueous acetone solution an amount of substantially anhydrous acetone calculated to reduce the water content to the desired percentage.  Detailed examples are given.
Patent GB-870664-A (GB)
Title: Liquid fuel pumps for internal combustion engines
Inventor: EVANS FRASER MACKIE
IPC: F02M41/14
Filed: 1958-09-25
Abstract: 870,664. Fuel injection pumps. C. A. V. Ltd. Sept. 11, 1959 [Sept. 25, 1958], No. 30634/58. Class 102(1). A fuel injection pump of the type comprising pump pistons 15, Fig. 1, in a rotary head 13 which is combined with a distributer 11. A feed pump 12 supplies fuel through passage 21, ports 22 and radial passages 23 to the pump chamber 14 and the fuel is delivered through a radial passage 19 to the passages 20 in turn leading to the engine cylinders. During each injection stroke of the pump one of the passages 23 communicates with a passage 25 leading to a cylinder 24 which houses a piston member 26 which is moved by the fuel to abut a stop 27. During each suction stroke a groove 29 in the distributer provides communication between the passage 25 and spill passage 30 and the piston is moved by a spring 28 to cause escape of fuel in the cylinder 24 through the passage 30, an axial passage in the piston and a radial port 33 until this port is closed by a sleeve 34. The position of the sleeve may be adjusted manually or automatically and its position determines the amount of return movement of the piston and hence the amount of fuel needed to move this piston against the stop on the subsequent injection stroke which thus determines the quantity of fuel delivered to the engine cylinders. In a modification shown in Fig. 3 the piston 26 is formed with a helical end which determines the end of the return stroke by the closing of the spill passage 30. The return movement of the piston is caused by fuel from the feed pump 12 acting on the left hand end of the piston.
Patent GB-249594-A (GB)
Title: Improvements in directional wireless systems
IPC: G01S1/02
Filed: 1924-12-20
Abstract: 249,594. Hamilton, B. H. N. H., and Robinson, J. Dec. 20, 1924. Bearings, determining; selective signalling systems. -Two fixed transmitting stations A, B, Fig. 1, emit C.W. radiation of slightly different frequency so that with a loop aerial at X a heterodyne note is detected unless the axis of the loop passes through A or B. The radiation may be supersonically modulated and the heterodyne note may be supersonic or audible: in the latter case no local oscillator is required. The stations A, B, may be close together, but when they are spaced apart, as shown in Fig. 1, there will be four silent positions for the loop aerial at X, unless X is in line with AB, in which case only two silent positions can be found. The latter case is utilized in the system shown in Fig. 2 for obviating quadrantal error. A fixed station O transmits signals in conjunction with each of the fixed stations A - - I in turn, and thereafter the station M repeats this process, each pair of stations being distinguished by a characteristic beat frequency. The receiving station X notes which pairs of transmitting stations give the most nearly coincident null positions for its loop aerial, and from these observations the position of X can be found without quadrantal error.
Patent GB-234395-A (GB)
Title: Improvements in and relating to exhaust silencers
IPC: F01N1/12
Filed: 1924-12-22
Abstract: 234,395. Ernst, J. Dec. 22, 1924. Exhaust-silencers. - A silencer comprises a helical casing a having cylindrical ends e, f and tapering towards the outlet end f, the casing being formed in two halves I, II secured together by means of flanges d and the end f being cut off obliquely. Longitudinal channels h connecting the ends are formed between the flanges d and the end f is connected to the last turn of the helical casing by a tapered passage k. In a modification, the casing is fitted with a central pipe with longitudinal slots in its walls, the pipe being closed at its inlet end and cut off obliquely at its outlet end. In another form, instead of the central pipe, perforated discs are centrally arranged between the threads of the casing. The helical casing may be enclosed in an outer casing traversed by part of the exhaust or by a cooling medium.
Patent GB-654875-A (GB)
Title: Improvements in apparatus for indicating and displaying variable data or information
IPC: G09F11/00
Filed: 1948-04-09
Abstract: 654,875. Indicators for displaying variable information. RONEO, Ltd., and SMITH, D. S. April 9, 1948, No. 30785/50. Divided out of 654,857. Drawings to Specification. [Class 118 (i)] The subject-matter of this Specification is retained in Specification 654,857 and comprises the description of Figs. 2, 2a, 2b, 2c and 2d of that Specification. The claims are directed to channel strips suitable for mounting on the indicator board of Specification 654,857 and provided with slidably attached channel title holders from which a tensioned wire (or wires) carrying movable markers extends to a clip on the other end of the strip.
Patent GB-733883-A (GB)
Title: Improvements in or relating to thyratron inverters
Inventor: FENEMORE RONALD WILLIAM
IPC: H02P27/04
Filed: 1952-12-04
Abstract: 733,883. Converters; automatic speed control. MULLARD RADIO VALVE CO., Ltd. Dec. 4, 1952, No. 30787/52. Classes 38 (2) and 38 (4). [Also in Group XXXVII] A supply and control system for an electric motor 30 in which the motor may be either synchronous or asynchronous and in which the speed of the motor may be maintained constant and be made to follow a set programme by the requisite application of a control voltage at a point 42 comprises an inverter 1, 2, 3 supplied by a rectifier 40, the output of the inverter feeding the motor 30. The frequency of the. inverter is under the control of a variable frequency oscillator 10, of the transitron type, which is fed with the control voltage from the point 42. The pulses developed by the oscillator 10 are fed into a ring counting unit 20 from which they are distributed to the grids of thyratrons 1, 2, 3 in the inverter. The output frequency of the inverter is thus one third of the oscillator frequency and is variable by means of variation in the control voltage at 42 and a potentiometer in the oscillator itself. A refinement in this control is provided by a tachometer generator 35 driven by the motor 30 the output of the tachometer generator being compared with the control voltage in a comparator 43 and the resultant fed into the oscillator. The voltage output from the rectifier 40 which is fed into the inverter is controlled by a series of delay circuits 41 whereby the instant at which the thyratrons are ignited is controllable thus altering the output voltage of the rectifier. The circuits 41 may be under the control of a potentiometer contained therein or may be under the direct control of the control voltage 42. Thus the well known requirement of induction motors that the applied voltage be substantially proportional to the supply frequency can readily be met. The ring counting circuit may be of the type disclosed in Specification 708,170, [Group XL (c)].
Patent GB-299778-A (GB)
Title: Improvements in current collectors for electric vehicles
IPC: B60L5/20
Filed: 1928-10-25
Abstract: 299,778. Fischer de T¾var¾s, J. Oct. 31, 1927, [Convention date]. Bow and skate collectors, with a plurality of contact faces rotatable about an asymmetric axis, have ramps n bridging the trolly frame and the offset part of the collector. The ramps may be integral with the filling-piece B. With collectors comprising plates adjustably connected to a hollow support, the ramps are inserted into the ends of the support.
Patent GB-322728-A (GB)
Title: Improvements in and connected with foundry moulding machines
IPC: B22C19/04
Filed: 1928-10-01
Abstract: 322,728. British Insulated Cables, Ltd., and Bullock, T. W. Oct. 1, 1928. Divided on 321,777. Drawings to Specification. Moulding-machines. - Comprises the electromaguetic drawing device described in Specification 321,77.7.
Patent GB-159659-A (GB)
Title: Improvements relating to the purification of tin or the production of tin salts fromcrude tin
Filed: 1919-12-10
Abstract: Crude tin is granulated or divided and introduced together with chlorine, and water into a vessel containing stannous or stannic chloride, the tin being maintained in excess so that stannous chloride is formed.  Pure tin may be obtained from the stannous chloride by known methods, so that the process may be used for refining tin.
Patent GB-520101-A (GB)
Title: Manufacture of acid mono-azo dyestuffs
Filed: 1938-10-26
Abstract: 520,101. Dyes. GEIGY AKT.-GES., J. R. Oct. 26, 1938, No. 30958. Convention date, Oct. 27, 1937, [Class 2 (iii)] Acid monoazo dyes are made by coupling diazotised monoaminodiphenylether sulphonic acids or monoaminophenoxydiphenylether sulphonic acids with 1-phenyl-3-methyl-5-pyrazolones or 1-phenyl-5-pyrazolone-3-carboxylic acids or their esters, chlorinated in the phenyl radicals. They yield yellow shades on wool and silk. In examples, dyes from the following components are described : 31;5'-dimethyl- 2-aminodiphenylether-4-sulphonic acid, 4<SP>1</SP>- phenoxy-2-aminodiphenylether-4-sulphonic acid 2' - methyl - 2-aminodiphenylether - 4-sulphonic acid, 2<SP>1</SP>:4<SP>1</SP>-dichloro-6<SP>1</SP>-methyl-2-aminodiphenylether-4-sulphonic acid, 4<SP>1</SP>-isoamyl or 41-phenyl or 4<SP>1</SP>-chloro-2-aminodiphenylether-4-sulphonic acid, the products obtained by the condensation of p-nitrochlorbenzene sulphonic acids with aromatic hydroxy compounds and subsequent reduction; 1-(31-chloro- or 3<SP>1</SP>-4<SP>1</SP>-dichloro-or 3<SP>1</SP>:4<SP>1</SP>:5<SP>1</SP> - trichlorophenyl) - 3 - methyl-5-pyrazolone ; the pyrazolones from 2:4-, 3:5- or 2:4:5- trichloroaniline. The Specification as open to inspection under Sect. 91 comprises the use of 4<SP>1</SP>-phenylazo-2- aminodiphenylether-4-sulphonic acid as diazo component. This subject-matter does not appear in the Specification as accepted.
Patent GB-153192-A (GB)
Title: Improvements in or relating to candle-holders
IPC: F21V35/00
Filed: 1919-12-10
Abstract: 153,192. Weaver, E. A. H. Dec. 10, 1919. Supporting.-A candle-holder for use in non- fiery mines is supported by a spiked hook 4 which is loose on or is clenched to opposite sides of a loop 2 on a wire frame 3 carrying a. base-piece 6 and a candle pedestal 9.
Patent GB-470061-A (GB)
Title: Improvements in or relating to building construction, applicable also to columns, tunnels, aqueducts and the like
IPC: E04B2/40
Filed: 1935-11-09
Abstract: 470,061. Tanks and vats. IKIN, G. Nov. 9, 1935, No. 30996. [Class 69 (i)] [Also in Groups X and XXI] Tanks or vats are constructed from an assemblage of moulded members a, each of which comprises an unperforated body portion formed of a synthetic resin composition, or a thermo-plastic material derived from cellulose or casein, such members being attached to a supporting structure, or connected together, by means of separate members which co-operate with flanges or lugs b formed on the moulded members. The flanges or lugs b may be moulded integrally with the member a, or may be included as inserts of metal or other material during the moulding operation. Holes c are provided in the flanges b to permit the attachment or connection of the members by bolts, rods, screws, pegs or like devices. The walls of the structure may be built up as shown in Fig. 4, the members a being threaded on rods g which are connected by hooked bolts j to vertical girders h. The upper edges of the members a have projections d which are centrally slotted so as to permit interlocking with the abutting flanges of two superposed members. Each member a also has a central vertical dovetail projection e on its inner face. The space between the opposed sets of members may be filled with cement &c., and a core k may be provided to form a hollow structure. A tank or vat may also be formed in inverted position by building up the inner face of the four walls and bottom of moulded members a threaded on reinforcing rods, the assembly constituting the bottom being supported on the wall members. Temporary shuttering is arranged around the four walls, and above the same, to enable concrete to be cast around the walls, and also on the bottom. Alternatively, the walls may be formed by connecting together hollow members formed as shown in Fig. 7. The outer faces of the members a may be coloured and have designs raised or impressed thereon and arranged to simulate wood grain, panelling, masonry, &c.
Patent GB-1480905-A (GB)
Title: Wall cabinet
IPC: F16B12/20
Filed: 1974-07-12
Abstract: 1480905 Cabinets JULIUS BLUM GmbH 12 July 1974 [30 July 1973] 31072/74 Headings A4B and A4U [Also in Division F2]  A wall cabinet comprises inter-connected rectangular vertical and horizontal supporting panels 3, 1, and back wall panels 5, each vertical supporting panel 3 having at least one vertical row of spaced dowel case receiving blind bores in each major face, the row in one face being opposite the row in the other face, the bores such as 6 in the row on one face being individually paired with respective bores such as 6' in the row on the other face, the axes of each pair of bores 6, 6' being parallel to one another and spaced apart vertically by a distance equal to at least a bore diameter so that all the bores in one row are staggered vertically with respect to all the bores in the opposite row. The bores are also arranged in horizontal rows with the same relationship as defined above (see Figs. 3, 4b not shown). The bores 6, 6' receive dowel casings 4 for the reception of pins 2 on panels 1 and 5. Panels 3 also have vertical grooves (7) Fig. 6 (not shown) for locating the edges (8) of panels 5.
Patent GB-1093365-A (GB)
Title: Improvements in liquid cooling apparatus
Inventor: DITCHBURN GEOFFREY NORMAN
IPC: F25D17/02
Filed: 1963-08-07
Abstract: 1,093,365. Cooling liquids. DITCHBURN VENDING MACHINES Ltd. Aug. 4, 1964 [Aug. 7, 1963], No. 31103/63. Heading F4H. A liquid to be dispensed is passed through a pipe immersed in water and means are provided for maintaining a predetermined quantity of ice in the water. As shown, the liquid is passed through serially connected helical coils 12, 13 disposed in a water tank 10 which also contains an evaporator coil 11. A temperature responsive device 16 disposed adjacent the evaporator controls a switch 19 for cycling the compressor 43 to maintain a predetermined thickness of ice on the evaporator. An agitator 15 is disposed within the upper part of coil 13. The cooled liquid from the outlet of coil 13 is passed to a dispensing point either directly or via a car bonating vessel disposed within tank 10 (Fig. 2, not shown). Flavouring is supplied to the disperning point from storage vessels via tubes extending through tank 10.
Patent GB-1149524-A (GB)
Title: Tobacco flow drying apparatus
Inventor: WOCHNOWSKI WALDERMAR
IPC: A24B3/04
Filed: 1965-07-22
Abstract: 1,149,524. Drying tobacco. K. KÍRBER. 19 July, 1966 [22 July, 1965], No. 31264/65. Heading F4G. In apparatus for drying tobacco or other fibrous material, the material is conveyed from one end of a rotary drying drum 2 to the other, into which drum hot air is supplied from both ends and from an intermediate region thereof moist air is withdrawn. The drum is slightly inclined to the horizontal and has a perforated wall 84 in the intermediate region over which a displaceable cover ring 64 is mounted leading to a common collecting pipe 68 for the moist air. Separate sources of hot air are provided for each end of the drum which are controlled by weighing or moisture detecting devices, the control devices including stage controls arranged to operate by reference to a standard value.
Patent GB-1279188-A (GB)
Title: Flexible joint
Inventor: SCARSBROOK NIGEL PAXTON
IPC: A45B17/00
Filed: 1970-06-27
Abstract: 1279188 Three positioned joint for tubes N P SCARSBROOK 2 Oct 1970 [27 June 1970] 31272/70 Heading E2F  The joint comprises a rod 14 fitted into each tube 12, a tension spring within each tube pulling the rod into the tube, and a strap 19 pivoted at its ends to the rods, and of sufficient length to bridge the bore of the tubes when at right angles thereto. The joint may be used in an angler's landing net and may be set at 180‹, 90‹ (as shown) or the two tubes may be folded back on themselves.
Patent GB-770475-A (GB)
Title: Improvements in or relating to rotary devices of the rotary abutment type
IPC: F04C11/00
Filed: 1954-10-29
Abstract: 770,475. Rotary engines and pumps. BERRY, F. Oct. 29, 1954, No. 31287/54. Class 110 (2). In a multiple pump, Figs. 1 and 2, of the rotary abutment type, recesses 43, 47 are formed as shown in the cylinder walls for internal pressure balancing purposes and ducts 45, 46 are provided to interconnect the low-pressure sides of the individual pump units for external balancing purposes. The piston and abutment rings may be formed separately from or integral with their respective shafts or the abutment shaft may be provided with the necessary recesses. The low-pressure sides of the bearing surfaces of the abutment rings are interconnected by ducts 53, 54. The casing is made up of intermediate plate members and end members interconnected as shown, anti-friction bearings being positioned as necessary by rings 78. In a modification, Figs. 13 and 14 (not shown), the ducts 45, 46 of Figs. 1 and 2 extend through the casing wall as opposed to the shafts and are herein referenced 112, 113. In a second modification, applied to a pump comprising two co-planar cylinders arranged in series, see Fig. 10 (not shown), the recesses 43 are arranged as in Fig. 2 or modified as shown in Fig. 11. The recesses 43 may be disposed equi-distant about the rotor axis and replaced by elongated slots, see Figs. 6 and 12 (not shown). In a further modification, the recesses arranged in the c position of Fig. 2 are dispensed with, see Fig. 7 (not shown). The rotor may be internally grooved, see Figs. 8 and 9 (not shown). Relative dimensions of the recesses are given in the Specification. Specifications 604,972 and 610,068 are referred to.
Patent GB-172203-A (GB)
Title: Improvements in or relating to machine gear cases
IPC: B61F3/04
Filed: 1920-11-05
Abstract: 172,203. Peers, W. Nov. 5, 1920. Guards and protectots,-A housing for toothed gearing comprises two components a, b and two internal brackets e, f, each of which brackets is formed with bifurcated arms e<1>, e<2> or f<1>, f<2> for connection to the components a, b by studs g and with a portion e or f which projects out of the casing for securing to a support. The in. vention is described in connection with the gearing by which power is transmitted from the motor of an electric tramway-vehicle to the road wheels. The upper component a slightly overlaps the lower component b and apertures c, d are provided for the wheel axle and armature spindle. Plates m, n are fitted in the ends of the case for stiffening purposes and to assist in preventing entrance of dust, these plates being secured to the components a, b and to the brackets. The case functions as an oil bath. and a lubricant-opening in the top of the case is closed by a spring-controlled sliding plate q, the sides of which are inturned to engage channels in the periphery of the oil opening.
Patent GB-723509-A (GB)
Title: Improvements relating to lubricating systems for internal-combustion reciprocating engines
Inventor: READ JOHN RADCLIFFE
IPC: F16C3/14
Filed: 1952-12-10
Abstract: 723,509. Lubricating. ROLLS-ROYCE, Ltd. Dec. 10, 1953 [Dec. 10, 1952], No. 31338/52. Class 7 (2). In a crankshaft lubricating system wherein lubricating oil is supplied at 17 to one end only of a bore 13 running through the crankshaft and conducting oil through holes in the crankshaft to the crankshaft journals and crankpins, one or more balance pipes 18B .... 18G are provided connecting the oil passages of two or more of the journals 10A .... 10G of the engine. The passages 18B .... 18G prevent a continuous drop in pressure along the passage 13 and in the six-throw crankshaft shown the balance pipes interconnect all of the journal bearings except the first. Alternatively the passages 18C, 18D, 18E and 18G may be omitted, leaving the journals 10B and 10F interconnected by the pipes 18B, 18F, whereby the pressure drops along the passage 13 from journal 10B to 10D and then rises again to the journal 10F due to the balancing action of the external passage.
Patent GB-1208507-A (GB)
Title: Blade fixing arrangement
Inventor: TOURNERE MARCEL JOSEPH
IPC: F01D5/30
Filed: 1968-07-01
Abstract: 1,208,507. Blade fixing. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. July 1, 1968 [July 11, 1967], No.31338/68. Heading F1T. Turbine or compressor blades 2 are fixed to a wall 1 which may be a stator casing or an outer rotor drum, by inserting each blade radially into an aperture 1a in the wall 1, sliding an insert 7 radially outwards over the blade until it surrounds the blade root 2a in the aperture 1a and then locking together all the blades in the row by a split ring 8 passing through holes 2c, 7c, in the blades and inserts respectively and lying in a circumferential groove 1c in the wall. The ring 8 is itself locked against circumferential movement by a pin, screw or key 9 inserted into a hole 1d in the wall to pass through the split in the ring 8. The split is just large enough to permit an individual insert 7 and blade 2 to be removed without unlocking the remaining blades. At their inner ends the blades are mounted in axial dovetail grooves 2d in a disc 3.
Patent GB-297244-A (GB)
Title: Improvements in tea pots and the like having infusers
IPC: A47G19/16
Filed: 1927-11-22
Abstract: 297,244. McCallum, R. M. Nov. 22, 1927. Pots. -An infuser 5 is tiltably supported within a teapot 1 by a handle 4 which fits detachably in a socket or like member on the infuser 5 and passes through a hole or slot 3 in the pot 1 from which it can be withdrawn after detachment from the infuser. The handle 4 may have lateral projections 6 forming a pivot. The infuser 5 may be a circular, rectangular, &c., shaped perforated gauze cage with a hinged perforated or gauze lid 10, and may be retained in the raised position by engagement of spring arms 11 on the handle 4 with the handle 2 of the pot. The handle 4 may have a push-in, screw or bayonet joint with the infuser 5. A mark may be provided on the infuser showing how far the pot may bo filled without leakage from slot 3.