baber/WOPTO huggingface dataset:
Patent GB-837019-A (GB)
Title: Improvements in or relating to the separation of steroid mixtures
Inventor: LONG ALAN GIBSON
IPC: C07J5/00
Filed: 1957-02-15
Abstract: Steroids of the general formula <FORM:0837019/IV (b)/1> (where R represents hydrogen or an acyl group) are separated from their mixtures with the corresponding 2-bromo- and/or the corresponding unbrominated 3-keto-4,5a -dihydro steriods by reacting the mixture with a substance which furnishes bisulphite ions to form a water-soluble derivative of the 2-bromo- and/or unbrominated steroid present and separating unreacted 4-bromo steroid from the water-soluble derivatives by difference in solubility in aqueous media.  Specified sources of bisulphite ions are alkali metal and ammonium metabisulphites, and the reaction is preferably performed in aqueous medium, pH 4-8, containing a watermiscible solvent, e.g. methanol, ethanol, isopropanol, dioxane or acetonitrile.  An excess of bisulphite (4-16 equivalents/mol. steroid present) is preferred. In examples: (1) 4,5a -dihydro-cortisone acetate in acetic acid containing HBr is dibrominated, the product rearranged and partially debrominated with chromous chloride yielding a mixture of steroids which is treated with aqueous alcoholic sodium metabisulphite and the unreacted 21-acetoxy-4-bromo - 17a  - hydroxy - 5a  - pregnane - 3,11,20-trione separated by filtration through kieselguhr and crystallization from ethyl acetate; treatment of the filtrate with sodium bicarbonate regenerates the 2-bromo isomer, which is debrominated to 4,5a -dihydrocortisone acetate; (2) a table lists the separation achieved with various metabisulphites and media; (3) a prepared mixture of 4,5a -dihydro-cortisone acetate and its 2- and 4-bromo derivatives is resolved as in (1).  Specification 748,958 is referred to.
Patent GB-891496-A (GB)
Title: Improvements in strain gauges
IPC: G01L1/22
Filed: 1959-02-16
Abstract: 891,496. Strain gauges. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 16, 1959 [Feb. 19, 1958], No. 5290/59. Class 40 (1). A strain gauge comprises a nickel-copper alloy resistance wire applied to a supporting base, the wire being connected at its ends by spot welding to thicker copper-silver alloy supply wires having a melting point of about 780‹ C., so that during spot welding the resistance wire remains undeformed where it contacts the supply wires.
Patent GB-702453-A (GB)
Title: Improvements relating to robots
Inventor: FLETCHER HOWARD LYNTON
IPC: G11B33/06
Filed: 1950-03-02
Abstract: 702,453. Sound producing robots. RECORDED SQUND, Ltd. June 1, 1951 [March 2. 1950], No. 5375/50. Class 132(3) [Also in Group XXXVIII] A robot includes apparatus for reproducing sound from a record through a loudspeaker and means, also controlled by the same recorded vibrations for controlling one or more-gestures by parts of the robot's body, in which the sound is reproduced and the gesturesare controlled respectively by separate reproducing heads spaced apart in the direction of travel of the record so as to introduce or compensate for time lag between the gesture and corresponding sounds. An endless steel tape A magnetized in accordance with recorded speech, passes through reproducing heads C, B in turn. Head B is connected to a loudspeaker D<SP>1</SP> via an amplifier D and head C is connected to amplifiers E and F. Amplifier F responds to frequencies, e.g. from 0 to 400 c.p.s. and E amplifies a higher range of frequencies. Relays E<SP>1 </SP>F<SP>1</SP> are each controlled by one of the amplifiers E, F and have contacts controlling solenoid actuated pneumatic valves E<SP>2</SP>, F<SP>2</SP> which control air under pressure to tip actuating pistons E<SP>3</SP>, E<SP>4</SP> and to bellows F<SP>3</SP> connected to a pivoted lower jaw member F<SP>4</SP>. To protect the bellows F<SP>3</SP> against excess pressure, a limit switch F<SP>7</SP> breaks the circuit of solenoid F<SP>2</SP> when the jaw F<SP>4</SP> is fully opened, and air pressure to the bellows is released. A further limit switch H controls a relay H<SP>1</SP> which is normally energized from low voltage supply G, and one or more condensers H<SP>2</SP> ensure that the relay is not de-energized unless'the jaw F<SP>4</SP> is open, e.g. from two to six seconds. When the relay is de-energized, contacts on it close and cause solenoid controlled valves J, K, controlling the eyes and hand respectively, to be operated. A non- return valve J<SP>5</SP> having an adjustable throttled by-pass, is included in the air line to the plunger J<SP>1</SP> operating the eyes and permits the eyes to operate 'rapidly in one direction and relatively slowly in the other direction., The normal time lag in the operation of lips and lower jaw is allowed for by adjustable spacing of the reproducing heads C, B, accurate synchronization of speech and gestures thus being possible. The apparatus may include two or more figures performing the same or different gestures and more than two, or only one amplifier may be provided and filter circuits or turned relays may be used at appropriate parts of the circuit for restricting the response to desired frequency ranges. Film strips and disc records are also specified as recording means.
Patent GB-403833-A (GB)
Title: Improvements in key-locked fastenings for attache and suit cases, boxes, bags, portfolios and the like
IPC: E05B65/50
Filed: 1933-02-23
Abstract: 403,833. Fastenings for attache cases &c. CHENEY, C. W., Factory Road, Soho, Birmingham. Feb. 23, 1933, No. 5488. [Class 44.] In a key-locked fastening of the kind comprising a bolt adapted to be drawn back manually by a knob against the action of a spring, and a tumbler is rotatably mounted on a key peg or pivot, the tumbler f is disposed against the front plate c and is wholly or partly covered by the knob g. The knob is fixed to the bolt a so that knob, bolt, and tumbler move together, and the tumbler is adapted to be turned by the key engaging a stump f<3> on its face. When the tumbler is in locking position, a tongue d<2> on the back plate d engages the narrow portion of a gate f<4> in the tumbler, so that the bolt cannot be moved by the knob. When the tumbler is turned by the key, the tongue d<2> enters the wide part of the gate, and the bolt and knob are free to be moved. Notches f<5> in the tumbler are adapted to snap engage a projection on the plate c to hold the tumbler in either position. In another form, the tumbler has a circular flange engaging the flange of the knob, and is held in either of its two positions by a peripheral spring projection entering one or other of a pair of slots in the flange of the knob.
Patent GB-676361-A (GB)
Title: Improvements in or relating to a process for crystallizing sugar
IPC: C13B30/02
Filed: 1949-03-01
Abstract: Sugar is crystallized from solution by passing the solution through a number of crystallizing tanks in the first of which the solution is cooled to a temperature such that crystals form spontaneously, the temperatures in the subsequent tank or tanks being such that these crystals grow in size but no new crystals form.  From the last tank the liquor is passed directly to the centrifugals.  The tanks may be cooled by water flowing from tank to tank in a direction contrary to that of the sugar liquor.  The tanks are equipped with agitators.  In an example sugar liquor enters the first tank at 42-45 DEG C and 38-42 DEG  Be concentration.  A certain quantity of crystals forms and the liquor then passes successively through three further tanks maintained at temperatures 35-38 DEG C, 28-32 DEG C and 20-25 DEG C. A fifth tank at 18-20 DEG C may also be used.  In a modification 75 per cent of the massecuite from the third tank is sent direct to the centrifugals and the mother liquor from the centrifugals added to the remaining 25 per cent and passed to the fourth tank, enabling a lower temperature to be used in the fourth tank and increasing the yield. Reference has been directed by the Comptroller to Specification 444,534.
Patent GB-867601-A (GB)
Title: Improvements relating to the formation of joints
Inventor: PARRISS WALTER HENRY
IPC: H01B17/30
Filed: 1957-02-19
Abstract: 867,601. Insulators. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 5, 1958 [Feb. 19, 1957], No. 5612/57. Drawings to Specification. Class 36. A joint between two members defining an annular, but not necessarily circular, space is made by filling the space with an initially liquid, settable resin, such as an epoxy resin composition, which adheres to the jointed surfaces, and then inserting reinforcement by fibrous material extending round the space. The fibrous material may be staple fibres, e.g. hemp, sisal, cotton or synthetic continuous filament, but glass roving is preferred. A method of making the joint is described.
Patent GB-181777-A (GB)
Title: Improvements in internal combustion engine driven locomotives
IPC: B61C5/00
Filed: 1921-02-18
Abstract: 181,777. Macchioni. A., Hocke, E., and Soc. Anon. Italiana G. Ansaldo & Co. Feb. 18, 1921. Railway locomotives, internal-combustion engine; driving-gear of crank-type, coupling rods, and like mechanism, arrangement of.-A locomotive is driven by an internal-combustion engine comprising one or more pairs of horizontal cylinders with oppositely acting pistons, the pistons at each end being connected to rocking beams connected in turn to crank-shafts coupled to the wheels. The pistons 3<1>, 4<1> in the cylinders 2, 1 are connected to a rocking beam 7<1> which operates a crank-shaft 10 coupled to the wheels by links 12. The other two pistons 3<2>, 4<2> are similarly connected to a beam 7<2> operating a second crank-shaft 20, the whole forming a single kinematic chain.
Patent GB-525432-A (GB)
Title: Improvements in the manufacturing of bearings for machine parts
IPC: F16C27/06
Filed: 1939-02-21
Abstract: 525,432. Supporting bearings. METALASTIK. Ltd., and GOLDSCHMIDT, M. Feb. 21, 1939, No. 5698. [Class 12 (i)] An anti-friction bearing surface of a machine bearing is fitted with a sleeve having a mass of rubber cemented, vulcanized or surface - bonded to its opposite side. Fig. 2 shows a ball bearing in which the outer race 3 is forced as a driving fit into a sleeve 4 which is surface-bonded to a rubber sleeve 5 surface-bonded on its outer surface to a metal sleeve 6. The ends 7 of the sleeve 4 may be spun over the ends of the race 3. Alternatively or in addition the inner race 2 may be similarly fitted with a metal sleeve having a rubber sleeve surface bonded to its inner surface. In another construction shown in Fig. 4 a plate 8 having perforations 9 for its mounting on a machine part has part of its surface bonded by vulcanization to rubber 10 which is vulcanized to a metal ring 11 into which the outer race 12 is a driving fit. In a further construction shown in Fig. 6 white-metal or other anti-friction metal 18 is cast into a sleeve 19 to which a rubber sleeve 20 is cemented or vulcanized. The rubber may be formed with perforations or be of concave or convex section at its ends to vary the stressstrain characteristics.
Patent GB-422020-A (GB)
Title: Method and means of making striped rubber products
IPC: B29C48/06
Filed: 1934-02-21
Abstract: 422,020. Extruding striped rubber threads. JOHNSON, J. H., 3723, Dundas Street West, Toronto, Ontario, Canada. Feb. 21, 1934, No. 5728. [Classes 70 and 87 (ii)] Rubber rods, threads, and the like made by extrusion have stripes of contrasting colour embedded spirally in the surface. Rubber is fed by a screw 3 through a conical recess 4 and die 13 in a head 5. The inner wall of the recess 4 is formed with channels 8 communicating by a passage 9 with a cylinder 16 containing a rubber mix of a contrasting colour, and fitted with a screw plunger 17. The head 5 is provided with spur teeth 20 meshing with gears (not shown) driven by the means rotating the screw 3, so that the head and channels 8 rotate as rubber is extruded. The plunger 17 forcing the stripe material may be advanced by means of a star wheel 19 which is engaged at each rotation by a rod 22. In the event of there being more than one channel 8 with corresponding cylinder, the respective plungers are geared together and all operated by the one star-wheel.
Patent GB-874540-A (GB)
Title: Improvements in and relating to screens or sieves
Inventor: GOULDING ERNEST HENRY
IPC: B07B1/46
Filed: 1957-02-20
Abstract: 874,540. Sifting apparatus. HALL & GOULDING Ltd. Feb. 12, 1958 [Feb. 20, 1957], No. 5768/57. Class 117 A screen to be mounted in an inclined position over the receptacle of a barrow comprises wires 3, 4 welded to one another and to the flanges of side and end members 1. Clips 8 and 9 are hinged to a rod 6 welded to the side members and engage the front edge of the barrow, and a screen supporting strut 10 of U-shape is hinged to a rod 7 and stands on the receptacle base.
Patent GB-1175304-A (GB)
Title: A Space Heating Device.
IPC: F24C15/32
Filed: 1968-02-06
Abstract: 1,175,304. Radiator stoves; space-heating stoves. VULCAANSOORD IJZERGIETERIJ & EMAILLEERFABRIEKEN. 6 Feb., 1968 [7 Feb., 1967], No. 5868/68. Headings F4S and F4W. A skirting heater for heating ambient air primarily by radiation comprises a rectangular casing subdivided by a vertical partition 6 and horizontal partitions 9, 10 to define an air supply chamber 11, a burner chamber 12, a combustion chamber 13 and a discharge chamber 14. Cut-away corners in the vertical partition 6 define lower and upper chamber interconnecting passages 7 and 8. The back wall 2 of the casing has an auxiliary casing 15 attached thereto. In operation, combustion air is fed from a supply tube 17 through casing 15 and chambers 11, 12 to a high pressure gas burner 21 located in the chamber 12 below a longitudinal slit 20 formed in the horizontal partition 9. The combustion gases which flow along an extended path through chambers 13, 14 exit through a discharge tube 19. As shown, a second vertical partition 22 is provided to define with the partition 6 an open vertical passage 23 through which ambient air circulates and is further heated. Normally, the rectangular heater casing, which is mounted on feet 24, is surrounded by a decorative or protective casing (not shown).
Patent GB-292886-A (GB)
Title: An improved combined knife and fork for persons having the use of one hand only or apart of one hand
IPC: A47G21/08
Filed: 1928-02-25
Abstract: 292,886. Simmonds, P. C. Feb. 25, 1928. Specially-shaped boxes; fittings, internal.-A box 16 for holding a combined knife and fork for use with one hand is adapted to be gripped between the knees for removal of the contents and is provided with a tool 21 for, releasing the screw 14, a compartment 25 to contain a supply of razor blades to be used as cutting members, and a cover 26.
Patent GB-916152-A (GB)
Title: Flexible waveguide
IPC: H01P3/14
Filed: 1960-02-19
Abstract: 916,152. Waveguides. ANDREW CORPORATION. Feb. 19, 1960 [Feb. 24, 1959], No. 6028/60. Class 40 (8). [Also in Group XXII] A flexible waveguide comprises a helically corrugated tube 12 formed from a sheet 16 of material bent to circular cross-section with the edge portions 26, 28 overlapped at 14 and welded together, the edge surface 20 of the inner edge portion 26 extending radially into the' tube. The tube can be formed of a single material of high conductivity or can be of stainless steel coated, except at 20 and 22, with a material 18 of higher conductivity, e.g. copper. The portions 26, 28 of the lap are slightly bent inward to form a small ridge in the waveguide. The thickness of the lap is from 0.005 to 0.03 times the average internal diameter of the tube 12. The tube is helically corrugated by a rolling operation. The tube has flanges 32, 34 and 0-rings 38 at each end for coupling the tube to a microwave source 44 and a receiving apparatus. The frequency of the source 44 can be between the dominant mode cut-off frequency of the waveguide for the next higher mode. It is stated that the useful range of frequencies varies from approximately 1.10 to 1.27 times the cut-off frequency for the dominant mode. Dimensions of the waveguide are stated.
Patent GB-551181-A (GB)
Title: Improvements in bearings
IPC: F16C33/14
Filed: 1941-05-12
Abstract: 551,181. Coating metals: casting; electrolysis. VANDERVELL PRODUCTS, Ltd., GREEN, D. F.. and, TEMPLE. C. F. May 12, 1941. No. 6119. [Class 82 (ii)] [Also in Groups XXII and XXXVI] In the treatment of bearings and parts having anti-friction bearing surfaces a lead alloy surface, e.g. a lead bronze, lead copper or lead silver alloy, is etched electrolytically or chemically, preferably by the process described in Specification 547,799, and a final thin coating of lead or lead alloy is applied to the etched surface to constitute the final bearing surface. The final coating may be sprayed on, or cast centrifugally on to the etched surface or may be applied electrolytically being firmly bonded on to the lead alloy surface which may be applied before treatment to a steel backing. The coating has a thickness of 0.0005-0.001 inch.
Patent GB-936901-A (GB)
Title: Improvements in or relating to the preparation of phenylisopropanol and derivatives thereof
IPC: C07C29/00
Filed: 1962-02-16
Abstract: Phenylisopropanol and its nuclear-chlorinated derivatives are obtained by hydrolysing compounds of the general formula:- <FORM:0936901/IV(a)/1> where n may be 0, 1 or 2, at a temperature of 0 DEG -50 DEG C. and a pH value of 0-1.  The desired pH value may be maintained by the gradual addition of dilute alkali throughout the hydrolysis. Compounds of this general formula specified are a -chlorocumene, p-chloro-a -chlorocumene and 3,4-dichloro-a -chlorocumene.  The alcohol formed in the hydrolysis separates in a layer from the reaction mixture, and may be further purified by fractional distillation in vacuo.  The compounds of the general formula:- <FORM:0936901/IV(a)/2> are prepared by adding dry hydrogen chloride to compounds of the general formula:- <FORM:0936901/IV(a)/3> where n = 0, 1 or 2, using a molar ratio of 1:1 and a temperature of 20 DEG -30 DEG C.  Preferably these a -chloro-cumene compounds are not isolated but are hydrolysed directly to the corresponding alcohol.  Two examples are given, illustrating the production of phenylisopropanol and p-chloro-phenylisopropanol respectively.
Patent GB-575741-A (GB)
Title: Improvements relating to work holders for use on machine tools
IPC: B23Q1/52
Filed: 1944-04-03
Abstract: 575,741. Grinding and polishing. KIMBER DIE & TOOL CO., Ltd., and KIMBER, W. A. F. April 3,1944, No. 6179. [Class 60] [Also in Group XXII] A work holder comprises a base plate a rotatably adjustable about a frusto-conical pivot piece c occupying a hole in the base plate and adapted to secure the plate to a work table d, a work-supporting plate k pivotally connected to the base-plate, and strut-like means s for securing the two plates in any desired angular relationship. The pivot piece c is secured to the table d by means of bolts e. A scale i on the pivot piece and an index on the base-plate enable the latter to be angularly set relatively to the table. The plate a is then secured by means of screws g and thrust pieces h which act directly on the periphery of the pivot piece. A hinge pin m secured to lugs k<1> on the plate k passes through lugs a<1> on the plate a has a collar n marked with a scale which co-operates with an index on an adjacent lug a<1> to facilitate the angular adjustment of the plate k which may be secured by means of slotted tie links s extending between the two plates. The work u is supported from transverse members v adjustably bolted to the plate k through clamping screws w and pressure pieces x. In modified forms, the work may be clamped directly to the plate k by clamping bolts, or held by a vice mounted on the plate. Alternatively the work may be carried on a third plate pivotally attached to one edge of the plate k or having a central pivotal connection with the plate k by means similar to those used for attaching the plates a and k or the plate a and table d respectively. For heavy work, the tie links s may be replaced by adjustable screwjacks anchored at their ends to the sides of the plates.
Patent GB-501867-A (GB)
Title: Improvements in or relating to machines for infusing coffee or tea and the like
IPC: A47J31/053
Filed: 1938-02-28
Abstract: 501,867. Coffee - making apparatus. WEINTRAUD & CO., GES., and HEUCKEROTH, C. Feb. 28, 1938, No. 6259. [Class 129] A coffee machine has inner and outer glass vessels n, a, the outer a serving for the boiling of the water by an electric heater h and the inner n containing an infusion basket z on to which, when boiling occurs, the water is forced through a tube n<1> extending from the inner vessel towards the bottom of the outer vessel ; premature rising of the water is prevented by a small air passage s in the sloping base of the inner vessel. The outer vessel a is held on the heater base e by tie rods m joined to an upper cap ring k. The infuser basket is carried by a rod p screwing into a socket piece r in the base e and is opened by unscrewing a nut p<1> so as to allow the lower portion q of the basket to move away from the upper portion q<1>. The coffee is maintained warm by a subsidiary heating element i. The base is provided with a drawoff cock x. A small air outlet u is provided in the top t. Gauge marks b, c, d are formed on the outer vessel a.
Patent GB-986899-A (GB)
Title: Railroad track working equipment
IPC: E01B29/10
Filed: 1962-02-19
Abstract: 986,899. Relaying railway tracks. MANNIX CO. Ltd. Feb. 19, 1962 [Feb. 23, 1961], No. 6309/62. Heading E1G. In railway track working apparatus two devices for working under the sleepers are pivotable about longitudinal axes on either side of a rail vehicle from positions clear of the track to positions below the track. A vehicle 20 movable on the track 23 comprises a rigid beam 21 supported adjustably on bogies 24, 25, the front bogie 24 having a yoke 26 secured to a conventional ballast plough as described in Specification 793,759. An aligning device 30 is attached to the beam as are four lifting jacks 31a, 31b, 33 and rail engaging dogs 32a, 32b, 34, as described in U.S.A. Specification 3,054,359. Outwardly projecting structures 36b support shafts 37b about which pivot rectangular tubes 40 in which slide tubes 44 rigid with tubes 45 supporting sleeper propelling rollers 46a, 46b driven by motors 47; the rollers being thus pivotable from positions clear of the track to positions under the sleepers by jacks 42. In removing sleepers, the ballast plough is towed by cables 36 and through the yoke 26 tows the beam 21. The propelling rollers 46a, 46b are lowered beneath the track and hammers 56b force the sleepers off the track and onto the toothed rollers 46a, 46b, which eject the sleeper outside the track. In another embodiment the sleeper remaining device is replaced with and undercutter or self-propelled plough, such as described in Specification 964,044, in the parts pivotable to a position under the track. Specification 906,007 also is referred to.
Patent GB-115624-A (GB)
Title: Improved Ignition Magneto for Internal Combustion Engines.
Inventor: AIME LEON WILCKEN
IPC: H02K21/12
Filed: 1918-04-15
Abstract: 115,624. Witcken, A. L., Wilcken, R., and Santinello, A. April 14, 1917. [Convention date]. Void [Published under Sect. 91 of the Act]. Magneto-electric machines.-An ignition magneto for internal-combustion engines comprises a permanent magnet or electro-magnet a mounted on the fly-wheel b and a stationary armature c wound with a primary coil d. For a multi-cylinder engine, as many magnetos are provided as there are cylinders. The magnet may be embedded in and magnetically insulated from the fly-wheel. The magnet may be stationary and the armature may be rotated.