baber/WOPTO huggingface dataset:
Patent GB-907462-A (GB)
Title: Improvements in or relating to the manufacture of boron hydrides and boron hydrides containing organic substituent radicals
Inventor: JENKNER HERBERT
IPC: C01B6/10
Filed: 1960-08-26
Abstract: Boron hydrides, e.g. diborane and pentaborane, are prepared by reacting a boron trihalide with an organo-silicon compound containing at least one organic radical and at least one hydrogen atom linked to a silicon atom, e.g. alkyl silanes or siloxanes. The organic radical of the silicon compounds may be an alkyl radical, e.g. methyl, ethyl, propyl, butyl, octyl, and dodecyl, or a substituted alkyl radical, e.g. C2H4Cl, or an aromatic radical, e.g. phenyl and naphthyl.  When the organo-silicon compound contains more than one hydrogen atom, the reaction may proceed in stages determined by the successive replacement of the hydrogen atoms by the halogen atoms of the boron trihalide.  The organo-silicon halides which are formed as co-products with the boron hydrides may be converted back to organo-silicon hydrides by reaction with an alkali metal hydride, e.g. NaH, in the presence of an organo-boron, or organo-aluminium compound.  The reaction may be carried out in an inert atmosphere, e.g. diborane, hydrogen, nitrogen, or a noble gas.  In examples, the starting materials are (1) diethylmonosilane and BCl3,(2) triethylmonosilane and BCl3, (3) triethylmonosilane and BBr3, (4) trimethylmonosilane and BCl3, and (5) diphenylmonosilane and BCl3, and the reaction temperature vary from 20 DEG  to 150 DEG C. Specification 823,483 is referred to.ALSO:Boron hydrides containing substituted organic radicals are prepared by reacting a boron-halogen compound of the formula BXnR3-n where X is halogen, R is an organic radical, and n is 1 or 2, with an organo-silicon compound containing at least one organic radical and at least one hydrogen atom linked to a silicon atom, e.g. alkyl silanes or siloxanes, preferably in an inert gas atmosphere, e.g. nitrogen.  The organic radical of the silicon compounds may be an alkyl radical, e.g. methyl, ethyl, propyl, butyl, octyl, or dodecyl, or a substituted alkyl radical, e.g. (C2H4Cl), or an aromatic radical, e.g. phenyl or naphthyl.  When the organo-silicon compound contains more than one hydrogen atom and the boronhalogen compound contains more than one halogen atom the reaction may proceed in stages determined by the successive replacement of the hydrogen atoms by the halogen atoms.  The organo-silicon halides which are formed as co-products with the substituted boron hydrides may be converted back to organo-silicon hydrides by reaction with an alkali metal hydride, e.g. NaH, activated with an organo-boron or organo-aluminium compound.
Patent GB-363440-A (GB)
Title: Improvements in electric insulated wires and cables
IPC: H01B7/02
Filed: 1930-10-03
Abstract: 363,440. Moulding rubber &c. coatings on cables by rolling machines. BRITISH INSULATED CABLES, Ltd., Prescot, Lancashire, WHITELEY, W., Cotterstock House, and WILKINSON, C., Greenheys, both in Helsby, near Warrington, Cheshire. Oct. 3, 1930, No. 29623. [Class 87 (ii).] A cable of the type comprising a conductor 14, Fig. 4, having a covering 13 of indiarubber o r the like provided with one or more ribs 12, is formed by applying longitudinal strips of rubber to the conductor and squeezing the strips to form a rib at a place at which junction between the strips is effected. The rib is so formed that it is connected to the cable by a narrow web, which, during the subsequent vulcanization of the cable, swells to the thickness of the rib and. provides a smooth junction between the rib and the cable. Fig. 2 shows a portion of a machine for producing cables having two diametrically opposed ribs, the machine comprising rolls 1, 2 formed with co-operating semicircular main grooves 5, 6 connected to rib-forming grooves 7, 8 by necks 9, 10 which are substantially narrower than the thickness of two sheets of rubber to be passed through the rolls. The conductors to be insulated are sandwiched between two sheets of rubber and are fed between the rolls 1, 2, the conductors being so placed as to lie in the centres of the main grooves 5, 6. The ribbed cables thus formed are then vulcanized. The ribs may be formed on a line which does not pass through the centre of the cable by forming the main grooves in one roll deeper than those in the other roll, as shown in Fig. 3. The ribs may be caused to project radially from the cable by making the rib-forming grooves in the two rolls of unequal depth, the deeper rib-forming grooves being formed in the roll having the shallower main grooves.
Patent GB-327982-A (GB)
Title: Improvements in suit case locks
IPC: E05B65/52
Filed: 1928-10-15
Abstract: 327,982. Stone, E. B. Oct. 15, 1928. Latches, swinging; hasp fastenings have the hasp 9 moving in a plane parallel to and between the front and rear faces of the lock casing 6. The hasp 9 is pivoted to a support 10 and carries a spring 11. The casing 6 carries a latch 12 locked by a dog 16 and tumbler 20 actuated by a key. The catch 8 of the hasp 9 has a cam edge engaging the opening 7 in the case 6 to draw the lid tight.
Patent GB-247893-A (GB)
Title: Improvements relating to the grinding of gear wheel teeth
IPC: B23F5/02
Filed: 1925-11-24
Abstract: 247,893. Churchill Machine Tool Co., Ltd., and Asbridge, H. H. Nov. 24, 1925. Gear-cutting.-In a gear-grinding machine of the kind in which the rolling of the tooth fece of a blank a relatively to the flat surface of a grinding-disc e is produced by the interaction of a templet g with a stationary roller abutment h, the return movement is effected by means of a spring i mounted on a slide l whose movement is co-ordinated with that of the blank slide c in such a way that the length oi the spring only varies slightly during ihe rolling cycle. The blank spindle carries a wheel i preferably of twice the diameter of the blank and engaging a rack k on which the upper end of the spring bears. During the upward movement of the slide c, the slide l is arranged to move downwardly at the same rate and the rack k also moves downwardly, any slight relative movements between the parts k and l being accommodated by the spring. In a machine embodiment, Fig. 2, the blank slide is reciprocated by a crank and is connected to impart ec ual and opposite movement to the slide l by means of a lever n and the spring i acts on the parts k, l through a lever m. Specification 107,608, [Class 60, Grinding or abrading &c.], 159,503 and 195,381 are referred to.
Patent GB-1083826-A (GB)
Title: Nozzle structure for electric gas blast circuit interrupters
IPC: H01H33/22
Filed: 1965-07-13
Abstract: 1,083,826. Gas blast switches. WESTING- HOUSE ELECTRIC CORPORATION. July 13, 1965 [Aug. 6, 1964], No. 29682/65. Heading H2B. The gas blast switch of Specification 904,160 is modified by providing the insulating blast nozzle 27 with lateral vent holes 36 adjacent to and downstream of the narrow throat portion 27a of the nozzle which portion is blocked by the fixed contact rod when the contacts are closed. Four symmetricaally spaced holes 36 are provided, having a total area about one-half the area of the throat portion. In addition, a plurality of grooves 50 are formed in the downstream portion of the nozzle; these are stated to cause turbulence and thus to increase the breakdown voltage. Reference has been directed by the Comptroller to Specification, 904,160.
Patent GB-262125-A (GB)
Title: Discharging device for shafts, especially for burning large pieces of lime
IPC: C04B2/12
Filed: 1926-11-26
Abstract: 262,125. Sobek, E. Nov. 28, 1925, [Convention date]. Shaft furnaces; discharging.-A discharging device for lime-kilns, silos, and other vertical shafts comprises radial guide plates b inserted in the hoppershaped lower end a of the shaft, these plates serving prevent clogging by dividing the charge into separate streams and to relieve the walls a of a considerable part of the weight by being bent as shown. The plates b also taper to a point at the lower end in order not to obstruct the discharge outlet c which is fitted with a sliding or other closure device.
Patent GB-1000878-A (GB)
Title: Improvements in or relating to hay tedders
Inventor: BAMFORDS RUPERT CYRIL
IPC: A01D78/02
Filed: 1963-07-30
Abstract: 1,000,878. Haymaking machines. BAMFORDS Ltd. July 21, 1964 [July 30, 1963], No. 30089/63. Heading A1F. A hay tedder comprising a tined drum driven from the power-take-off of a tractor through a torque limiting device to allow slip in the drive if the tines encounter an obstruction is characterized in that the drum consists of tine carrying bars 22 mounted, in plates 23 secured for rotation with the axle 11 of the drum, for limited rotation with respect to the plates against an adjustable spring 30 whereby the tines 21 can pivot rearwardly on encountering an obstruction. The tedder operates on two swaths simultaneously. Specification 826,710 is referred to.
Patent GB-685497-A (GB)
Title: Pour depressants and the process of their manufacture
IPC: C08F8/02
Filed: 1950-12-08
Abstract: Polystyrene of molecular weight 25,000 to 45,000 (Stundinger) is alkylated 75-100 per cent by dissolving it in a non-reactive polar solvent, e.g. tetrachlorethylene, o-dichlorobenzene, carbon disulphide, p-dichlorobenzene, chlorobenzene and nitrobenzene, adding a Friedel-Crafts catalyst, slowly adding an aliphatic mono-olefine containing 14 to 20 carbon atoms in a straight chain, e.g. hexadecene-1, octadecene-1, or mixed olefines from cracked paraffin wax, or hydrocarbon synthesis, and maintaining the reaction temperature between 30 DEG  and 75 DEG  F. to form a product having a molecular weight of 6,000 to 18,000 (Stundinger). Suitable catalysts are aluminium chloride, bromide and bromo-chlorides, and hydrogen fluoride.  Diluents or catalyst modifiers such as nitrobenzene may be used to influence the rate and degree of alkylation.  The reaction may be quenched with alcohol and the products purified by precipitation with acetone and reprecipitation from a benzene solution, and used as pour point depressants in waxy mineral lubricating oils. Specifications 428,438, 640,566 and 640,567 are referred to.ALSO:Polystyrenes alkylated 75 to 100 per cent with aliphatic mono-olefins containing 14 to 20 carbon atoms in a straight chain and having a molecular weight of 6,000 to 18,000 (Staudinger) (see Group IV(a)) are used for pour point depressants for waxy mineral lubricating oils.  Specifications 428,438, 640,566 and 640,567 are referred to.
Patent GB-1437975-A (GB)
Title: Wheels
IPC: B60B5/02
Filed: 1973-06-25
Abstract: 1437975 Vehicle wheels MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 25 June 1973 [26 June 1972] 30120/73 Heading B7C A wheel cast or moulded, e.g. from an alloy or plastics, comprises a disc 20 provided with a plurality (i.e. three, four or five) fixing regions each including means, e.g. bolt holes 22, for fixing the wheel to a vehicle hub, and radially directed U-section ribs 27. The dimension of each rib parallel to the wheel axis decreases from the centre of the wheel towards the rim, and each rib is narrowest at a position intermediate its radially inner and outer ends. In the illustrated wheel, the outboard surfaces of the ribs lie on an imaginary cone 26 having an axis coincident with the wheel axis and an apex angle a of 90-150 degrees, as shown a= 125 degrees. Each fixing region is bounded by the side walls of adjacent ribs and these walls lie on an imaginary cone 28 having an apex angle # of 5-30 degrees, as shown #=20 degrees. The fixing regions may be circular, elliptical or polygonal.
Patent GB-1551779-A (GB)
Title: Trolley
IPC: B62B3/02
Filed: 1976-07-20
Abstract: The trolley has a lower platform which is provided with rollers and carries two fixed lateral grills and a movable grill between the fixed grills. At least one horizontal shelf is pivotably mounted on a first of the fixed grills and is pivotable between a withdrawn position against the first fixed grill and a horizontal position in which the shelf bears against a rod of the second fixed grill. A gate mounted on one of the fixed grills to be movable inwardly of the space defined by the three grills from a closed position to an open position prevents the shelf from being pivoted to its withdrawn position so long as the gate is in its closed position. A fixed gate is disposed above the lower platform. The distance between the gates and the shelf immediately above them is less than the height of the objects to be transported by the trolley.
Patent GB-998081-A (GB)
Title: Methods of cladding metal
IPC: B23K20/04
Filed: 1963-07-31
Abstract: 998,081. Jointing by rolling; producing composite sheets; welding by pressure. COMPOSITE METAL PRODUCTS Inc. July 31, 1963 [Aug. 15, 1962], No. 30317/63. Headings B3A, B3M and B3R. A method of forming a composite metal strip comprises the steps of removing, as by abrasive grinding wheels 15, and 16, all oxides and foreign matter from strips 13 and 14 to be joined, passing the strips through separate furnaces 17 and 18, having protective atmospheres at temperatures selected to give desired physical properties to the finished product, bringing the cleaned surfaces together, in a protective atmosphere by rolls 20, and roll bonding the composite in a stand 21. The strips are, for example, 3003 A151 aluminium and 304 A151 stainless steel, the physical properties of the composite being controlled by adjusting the temperatures of the strips to be above their stress relieving temperatures, or recrystallization temperatures, or, in the case of aluminium, to be at room temperature. The protective atmosphere may be a mist, a reducing atmosphere or a vacuum. A third furnace may be employed to form a composite of aluminium sandwiched between stainless steel.
Patent GB-229777-A (GB)
Title: Means for and a method of laying railway tracks or taking up same
IPC: E01B29/02
Filed: 1923-12-03
Abstract: 229,777. Bretland, A. W. Dec. 3, 1923. Vehicle fittings; overhead travellers and transporters.-In construction plant comprising a series of railway trucks provided with a continuous runway for handling track units, the rails of the runway are arranged laterally on the trucks, leaving space between them for stacking track units, and a travelling gantry runs on the rails and over the stacked units. The train, Fig. 1, comprises a locomotive L, power plant P, trucks A with runways, and a truck B carrying a fixed cantilever crane C. The inner end C<2> of the crane is reduced so as to fit within the gantry D. The crane C has an overhead runway for a motor crab used to handle the rail sections RS at the ground. The gantry wheels 7 run on rails 1 carried by brackets secured to the truck. A sliding joint is provided between the rails of adjacent trucks, Fig. 10. The bridging rail 3 is mounted at one end on a cardan joint 5 and has a pin-and-slot connection with a rail 4 which slides within the rail 1 of the adjacent truck, a flange 4e projecting over the prong 3b and being engaged by an auxiliary surface on the gantry wheel to prevent accidental disengagement of the connection. The outer end of rail 4 slides on a plate 6 carried by the end bracket 2. The gantry collects current from a guarded conductor 8 carried by the brackets 2 and joined by cables 9, 9a having a junction box 10. The rail ends and cable ends are inverted at opposite sides of the truck. An operator's platform D<2>, adapted to be folded into the gantry, is provided on each side. A lifting frame D', Fig. 4, is suspended from the gantry by hoisting ropes 13<a> passing over pulleys 15 mounted on carriages 16 which can be moved transversely on the gantry to adjust the position of the frame. Lifting-cradles; load, engaging.-Each rail is gripped by four pairs of claws 24, 25, Fig. 20, carried by the frame D' and actuated by intermeshed wheels 26, 26<1> the wheels 26 being mounted on a common shaft 27 rotated by a hand-wheel. In the case of the crane crab, the grip frame is suspended by centrally-disposed pulleys which can be moved transversely in the frame so as to tilt the rail sections laterally.
Patent GB-520393-A (GB)
Title: Manufacture of carbonyl compounds of the cyclopentanopolyhydrophenanthrene series
IPC: C07J5/00
Filed: 1938-10-20
Abstract: 520,393. Sex hormones. SOC. OF CHEMICAL INDUSTRY IN BASLE. Oct. 20, 1938, Nos. 30353 and 30354. Convention dates, Oct. 25, 1937, and Sept. 28, 1938. [Class 2 (iii)] Carbonyl compounds of the cyclopentanopolyhydrophenanthrene series are prepared by subjecting to thermal decomposition triarylmethyl ethers of the corresponding carbinol compounds. The parent material is heated to, for example, 200-350‹C., if desired in the presence of an inert gas or in the presence of a solid diluent which may act catalytically such as metals, metal oxides and salts, for example aluminium and zinc oxides, copper powder and barium chloride, or in the presence of a liquid diluent such as high-boiling hydrocarbons. The reaction may be illustrated by the formula:- Primary carbinol groups yield aldehydes and secondary carbinol groups yield ketones. As parent materials there are mentioned the triarylmethyl ethers of androstane-diols, androstane-triols, androstene-diols, androsterone, dehydroandrosterone, pregnane-diols, pregnenediols, pregnanolanes, pregneneolones, compounds of the suprarenal cortical hormone series, such as pregnene-3:21-diol-20-one, pregnene-3:17:20:21-tetrol and pregnene-3:20:21- triol and polyhydro-follicle hormones such as the octahydro-follicle hormone. As triarylmethyl residues are employed triphenylmethyl, tritolylmethyl, tri-(diphenyl)-methyl and trinaphthylmethyl or mixed substituted triarylmethyl residues. Primary hydroxyl group may be converted into aldehyde groups without the simultaneous oxidation of secondary hydroxyl group present, for example, A <SP>5</SP>-pregnene-3:21- diol-20-one-3-acetate may be converted into the 21-triphenyl methyl ether, which on alkaline saponification yields # <SP>5</SP>-pregnene-3:21-diol :20- one-21-triphenylmethyl ether. In the examamples : (1) trans-dehydroandrosterone-triphenylmethyl ether (prepared from transdehydroandrosterone and triphenylchloromethane) yields androstene-dione ; (2) androstenediol-3-triphenylmethyl ether (prepared by the reduction of transdehydroandrosterone-triphenylmethyl ether of example 1) yields testosterone. There is also mentioned the preparation of testosterone propionate from androstene-diol-3-tri-(diphenyl)-methyl ether- 17-propionate, testosterone from androstenediol-3-trinaphthyimethyl ether, pregnenedrone from a triarylmethyl ether of pregnene-3-ol-20- one and pregnane-diones from the corresponding bis-triarylmethyl ethers of pregnane-diols. Pregnene-3:20-diol-21-one, pregnene-3:17:20- triol-21-one, pregnene-17:20-diol-3:21-dione, pregnene-3:20-dione-21-ol and pregnene-3:20- dione-17:21-diol may also be prepared by this process.
Patent GB-672226-A (GB)
Title: Method of making an electromechanically responsive ceramic body
IPC: H01L41/24
Filed: 1949-11-28
Abstract: 672,226. Piezo-electric crystals. BRUSH DEVELOPMENT CO. Nov. 28, 1949 [Dec. 28, 1948], No. 30440/49. Class 40 (viii). [Also in Group V] A plate 29 made by a process of dipping in dispersions of ceramic raw materials (see Group V) is composed of two materials integrally bonded which exhibit electromechanically - responsive properties of different values as the result of polarization by a unidirectional electric potential applied between electrodes 33, 34. Preferred materials are barium titanate and barium-strontium titanate, the first of which retains its polarization at ordinary temperatures, but the second of which does not. As shown by Fig. 6, the electromechanical response property is of high magnitude in the left hand portion, which is barium titanate, while the right hand portion exhibits a substantially lower-valued electromechanical response property, or zero response. A very narrow zone of rapidly changing response exists between the two thickness portions. The plate is thus suitable for use in a flexure - sensitive transducer device. The polarizing may be carried out during operation in a transducer device, at the same time as an A.C. signal is received, in which case the electromechanical signal response of the thickness consisting of barium titanate is much higher than that of the thickness consisting of barium-strontium titanate and the plate is also suitable for use in a flexure-sensitive transducer. Since the unresponsive barium-strontium titanate has a larger dielectric constant at ordinary temperature than the responsive barium titanate a signal produces a field strength of greater intensity in the responsive portion of the plate, thus increasing the efficiency of the plate as a transducer element. Specifications 663,424, 672,227 and 672,228 are referred to.
Patent GB-844621-A (GB)
Title: Velocity-modulated electron discharge tube apparatus
IPC: H01P1/08
Filed: 1956-10-05
Abstract: 844,621. Tuning cavity resonators. VARIAN ASSOCIATES. Oct. 5, 1956 [Nov. 14, 1955], No. 30467/56. Class 40(8). [Also in Group XL(a)]  In a velocity modulation electron discharge tube having at least one cavity resonator and a tuning plunger for tuning the resonator, movement of the plunger varying the inductance of the resonator, there is provided a shield associated with the plunger and adapted to prevent the capacitance of the resonator from being substantially affected by movement of the plunger whereby the linearity of the resonance frequency versus plunger displacement characteristic of the cavity is improved. The tube shown comprises a cathode assembly 1 and a collector assembly 2 between which are arranged an input buncher resonator 7, two further buncher resonators 8 and 9 and an output resonator 11 separated by drift tube sections 12. Resonator 7 is tuned by a copper plunger 28 (Fig. 5) surrounded by a shield 29 provided with a slot 32 to permit magnetic coupling to the space inside the shield. The tuner actuating mechanism comprises a bearing 35 of oil impregnated brass which slides on a guide rod 34, a vacuum-sealed bellows 37 of non-magnetic stainless steel, an arm 36, a hollow rod 38 containing a septum 41 to allow cooling fluid to be circulated, and a windlass operated by a worm gear 56. The windlass has four semi-cylindrical drums 45 each provided with a straddling channel member 46 having a projection engaging an adapter 47 holding one end of a metal tuning band 49 which passes over a roller to a further adapter 52 secured to a threaded plug 53 screwed into a tuner rod extension 42. Resonators 8 and 9 are provided with similar tuning arrangements, but to reduce the overall length of the tube the output resonator 11 and its plunger are upside down compared with the other resonators so that this tuning plunger moves in the opposite direction to the other plungers thus necessitating a modified tuning arrangement (Figs. 8 and 9 not shown) for this plunger to allow simultaneous gang tuning of all the resonators. A screw 48 threaded through each channel member 46 allows individual adjustment of the tuning plungers. An assembly of three frusto-conical members 23, 26 and 27 provides for axial and transverse alignment of the cathode assembly 1 and enables the cathode to be renewed by breaking and remaking a single welded joint between members 26 and 27. The output waveguide structure 16, the cavity resonator interaction gaps and the window 18 in the output waveguide are described in Specifications 844,622, 844,623 [Group XL(a)] and 844,624 respectively.