baber/WOPTO huggingface dataset:
Patent GB-671140-A (GB)
Title: Organo-silicon co-polymers and their manufacture
IPC: C08G77/00
Filed: 1950-02-08
Abstract: A siloxane copolymer which contains silicon atoms bonded to oxygen and silicon atoms all the bonds of which are satisfied by carbon, and contains an average of 1.98 to 2.1 (inclusive) organic radicals per siloxane silicon atom, over 50 per cent of the organic radicals being CH3-radicals, the remaining radicals being [(CH3)3SiCH2-] or [(CH3)2.C6H5SiCH2-], to the extent of at least 0.25 per cent of the organic radicals, the remaining valencies of the silicon atoms being satisfied by siloxane linkages, may be made (a) by reacting a chloromethyl methyl polysiloxane with trimethyl or dimethyl phenyl silicon chloride using sodium by a Würtz reaction; (b) by cohydrolysis and co-condensation of R(CH3)2SiCH2SiCH3Y2 and (CH3)2SiY2, where each R is a CH3- or C6H5 radical and each Y is an alkoxy radical or halogen atom, either with or without a catalyst and in the presence or absence of a solvent, such as benzene, or (c) by separately hydrolysing and condensing the reactants in (b) and mixing and copolymerizing (by contacting them with oleum) the resulting products, a solvent being used, if desired.  Minor amounts of methylsilsesquioxane or trimethylsiloxane may be included as units in the copolymer.  The copolymers vary from mobile liquids (2.1 radicals) to products which are elastic and non-flowing (2.0 rads.) at room temperature, and may be used for damping media, hydraulic fluids, liquid dielectrics, and for rendering surfaces water-repellent, and they may be thickened by adding fillers, e.g. silica aerogel, for use as electric sealing compositions, while the copolymers containing less than 2.0 radicals per siloxane silicon are cross-linked elastic solids, and may be used for the production of silicone rubber.  The copolymers may be mixed with benzoyl peroxide or tertiary butyl perbenzoate (as catalyst) and a filler, such as titania, ferric oxide, zinc oxide or silica, with subsequent milling and vulcanization by heating to 100-300 DEG  C.  In examples: (1 to 6) a mixture of [(CH3)2SiO]4, <FORM:0671140/IV (a)/1> and [(CH3)3Si]2O was contacted with oleum; (7) cyclic [(CH3)2SiO]3SiO(CH3)CH2Cl and (CH3)3 SiCl were reacted with sodium and distilled to give <FORM:0671140/IV (a)/2> (8) a mixture of [(CH3)2SiO]4 and cyclics of <FORM:0671140/IV (a)/3> and (9) [(CH3)2 SiO]4 and <FORM:0671140/IV (a)/4> were contacted with oleum. Specification 579,408 is referred to.
Patent GB-1280131-A (GB)
Title: Moulded-case circuit breaker with improved double-latch mechanism
Inventor: CARPENTER PETER EDWARD GEORGE
IPC: H01H83/02
Filed: 1971-01-26
Abstract: 1280131 Automatic circuit breakers SQUARE D CO 26 Jan 1971 3236/71 Heading H1N An automatic circuit breaker has a double latch mechanism in which a centrally pivoted, bifurcated, secondary latching lever 22 has one arm 29 latching a pivoted primary latching lever 21 which in turn latches a pivoted trip lever 10. Lever 22 engages, at 22c, the plunger 31 of an earth leakage detecting solenoid 32. When operated, this releases the latching lever 21 from engagement with an edge of latching lever 22, and also by means of arm 30 and triplink 65 rotates cam 62 and the tripping bar 61 to operate the latching mechanism of the adjacent poles of the circuit breaker which are provided with overload responsive trip coils. The breaker is reset by a handle (64) coupled by a bar 17a to levers 17 in each pole. A push-button 46 when depressed connects the coil 34 with a supply line via a resistor 58 by means of a changeover switch, Fig. 4 (not shown), for testing purposes. An air gap between two contacts of the changeover switch serves as a lightning arrestor for protection of the coil 34.
Patent GB-431077-A (GB)
Title: Improvements in friction clutches
IPC: F16D13/71
Filed: 1934-01-31
Abstract: 431,077. Friction clutches. BORG & BECK CO., 6558, South Menard Avenue, NUTT, H., 9916, South Hamilton Street, and REED, H. V., 6558, South Menard Avenue, both in Chicago, U.S.A. Jan. 31, 1934, No. 3263. [Class 80 (ii)] Each of the radial levers 10 for withdrawing the spring-loaded pressure plate 6 of a plate clutch has a rounded pivotal projection 43 in rolling contact with the flat face 44 of the cross member of aT-bolt 42 carried by the cover plate 8, with which the plate 6 rotates. An extension 421 of the bolt is slidably supported in the plate 6. A plate strut 47, with rounded or knife-edged ends, engages between a depression 46 in the outer end of the lever and the flat face of a projection 48 extending from a lug 19 on the plate 6, the strut being retained by a wire 50. When the projection 48 is disposed between the plate 6 and the lever 10, the strut is replaced by a tension link. Specification 419,834 is referred to.
Patent GB-1026470-A (GB)
Title: Improvements in reflector arc lamps
Inventor: WILSON JOHN
IPC: H01J61/86
Filed: 1965-01-26
Abstract: 1,026,470. Discharge lamps. GENERAL ELECTRIC CO. Jan. 26, 1965, No. 3326/65. Heading H1D. The leads 4 and 5, Fig. 1 (not shown), to an elongated cylindrical arc tube 1 in a reflector lamp comprising a vitreous outer envelope formed by a concave reflector 14 and a transparent cover 15 peripherally sealed together, are joined to connectors sealed respectively through the centre of the reflector and the centre of the cover. The arc tube 1 comprises a thoriated tungsten cathode 8 and a tungsten anode 9 supported by a spring 11 in an envelope filled with xenon at a pressure of a fraction of an atmosphere to several atmospheres. Cathode lead 4 is welded to the centre of a bow-shaped conductor 23 whose ends are brazed together in a copper tube 24 which is brazed to a ferrule 18. Anode lead 5 is welded to an alloy wire 28 brazed to a ferrule 21 to which is also brazed a lead 29. Tube 24 has a side hole 25 through which nitrogen is passed while sealing the cover 15 to the reflector 14. The outer envelope is exhausted and then filled with nitrogen to a pressure of about half an atmosphere. The tube 24 is then pinched off at 27 and serves as a cathode terminal. The lamp may be used in a television projection system.
Patent GB-1481592-A (GB)
Title: Septum mounting and shielding assembly for sample injection of an analytical instrument
IPC: G01N30/18
Filed: 1976-01-28
Abstract: 1481592 Sample injection device PERKINELMER CORP 28 Jan 1976 [28 Feb 1975] 03366/76 Heading G1B A septum mounting and shielding assembly for a sample injector used to inject a sample through a self-sealing septum into an analytical instrument comprises a septum holder member 32 having a bore 54 capable of being aligned with and constituting a part of a passage 54, 29, 18 through which the probe may be inserted into communication with the analytical instrument and means for mounting the septum holder member 32 for rotary movement about an axis 33 eccentric to the passage, whereby rotation of the member 32 selectively moves the bore 54 into and out of registration with the passage. In the device shown, the septum is silicone rubber member 60. After injection of the sample through the septum into passage 54, 29, 18 for entrainment in a carrier gas stream flowing through the annular passage between body member 12 and sleeve 14, through passages (not shown) into the space between sleeve 14 and a liner 16 and out by bore 22 to the analytical instrument, lever 68 is operated to rotate member 32 about axis 33 and to move bore 54 in member 32 out of alignment with passage 29.
Patent GB-1131802-A (GB)
Title: Devices for feeding fibre processing machines
Inventor: HERGETH ADOLF
IPC: D01G23/02
Filed: 1966-01-25
Abstract: 1,131,802. Feeding fibres. HERGETH K.G. MASCHINENFABRIK UND APPARATEBAU. 25 Jan., 1966, No. 3402/66. Heading DIN. Fibres are fed to the feed shafts 2a, 2b, 2c, 2d of a number of fibre processing machines e.g. carding engines 1a, 1b, 1c, 1d by a first conveyor 3 and the surplus fibres on conveyor 3 at the end of its run are returned to the beginning by a second conveyor 15. The fibres are fed into conveyor 3 by a device 4. Each feed shaft e.g. (2a), Fig. 1, not shown, is provided with three fibre sensing flaps (7) each of which can actuate an air jet (11) to blow fibres from the conveyor into the appropriate part of shaft (2a) requiring fibres. At the end of conveyor 3 a jet 16 blows surplus fibres onto the returning conveyor 15 which normally moves at a slower speed than conveyor 3. A fork 20 is provided above conveyor 15 against which the surplus fibre accumulates until the fork is actuated to stop the fibre feed from device 4, bring the speed of conveyor 15 upto that of conveyor 3 and switch on an air jet 17 to transfer the fibres back onto conveyor 3. When the fibre is transferred the fork 20 returns to its original position and normal operation is resumed. In the embodiments of Figs. 4 and 5, not shown, the return conveyor is placed immediately below conveyor 3 but, at the end remote from feeding device 4 it extends beyond conveyor 3 so that surplus fibre falls off the end of conveyor 3 onto the lower conveyor to be returned. At the end of the return conveyor adjacent device 4 the fibres are blown off into a casing from which they are lifted by an elevator to be replaced on the conveyor 3. The elevator which is also fed by the device 4 has a number of different speeds and a speed is selected in response to the number of feeler flaps indicating a demand for fibre.. In the embodiment of Figs 6 to 8, not .shown, a single endless belt is provided, the upper run forming the feeding conveyor and the lower run the return conveyor, the surplus fibres being blown down a chute onto the lower level.
Patent GB-308032-A (GB)
Title: Improvements in or relating to the manufacture of nut blanks
IPC: B21K1/64
Filed: 1928-02-04
Abstract: 308,032. Reynolds, J. W., and Ward, Ltd., T. W. Feb. 4, 1928. Forging nuts; shearing; shearblades.-In a nut forging or like machine of the kind in which a shearing- tool is reciprocated in guides at right angles to the axis of the die and forging-tools to sever a blank from a bar fed parallel to the axis of the forging- tools and to carry it to the die, the shearing tool slide, is reciprocated by a disc mounted obliquely on a cam shaft parallel to the shearing-tool guides and engaging a driving lug, rollers &c. on the shearing tool slide. The die 11 is mounted in the frame 10 and the nut-forming tools 12, 15, 16 are carried by slides actuated by a cam 17 and a cam on a shaft 13. The shearing- mechanism is mounted on a bracket 19 provided with guides 22 for the slide 23 carrying the shearing-tool 24 which coacts with a stationary shearing-tool 25. The slide is reciprocated by a disc 31 mounted obliquely on an extension 29 of the cam shaft 28 and engaging between rollers 32 carried by the slide 23. The disc is offset at 34 to give the slide a period of rest at each end of its travel.
Patent GB-396450-A (GB)
Title: Improvements in or relating to teat cups for milking machines
IPC: A01J5/08
Filed: 1933-01-30
Abstract: 396,450. Cow-milkers. ASTON, A. R., Wynnstay, Tarporley, Cheshire. Jan. 30, 1933, No. 3677/32. [Class 84.] In a teat cup of the kind in which the casing comprises two telescopic parts adapted to b secured in the extended position in order to stretch the liner, means are provided for automatically compressing a packing-ring situated between the two parts to seal the space therebetween when the two parts are held in the extended position, and for utilizing the tension of the stretched liner to keep the packing-ring in a compressed or sealing condition. The casing comprises an outer part a and an inner part b, the upper portion of the inner part b being surrounded by a sleeve h bearing on a packing- ring g seating on a flange b<2>. The sleeve h is secured to the part b so as to have a limited sliding movement with respect thereto, as for example by a pin h<1>, Fig. 4, on the sleeve engaging a bayonet slot b<3> on the part b. The sleeve h is provided also with a pair of helical slots h<2> and a pair of notches h<3> adjacent thereto which are adapted to be engaged by pins b<4> on the outer part a of the casing. When the pins b<4> are at the bottom of the slots h<2> the two parts a, b of the casing are in their retracted position and the packing ring g is not compressed. When, however, the two parts of the casing are secured in the extended position by engaging the pins b<4> in the notches h<3>, the tension of the liner c causes the sleeve h to compress the ring g. The upper end of the liner is provided with a flange c<1> engaging over a flange a<1> on the part a, and the lower end of the liner is adjustably secured to the lower end of the part b by a ferrule d which also secures in position a bowl f, preferably of glass, carrying an outlet nipple e.
Patent GB-1292714-A (GB)
Title: Improvements relating to insulating methods and materials
Inventor: BROWN WILLIAM BERNARD
IPC: E04D3/35
Filed: 1970-01-26
Abstract: 1292714 Laminates; seaming MONSANTO CHEMICALS Ltd 6 Jan 1971 [26 Jan 1970] 3685/70 Headings B5K and B5N [Also in Division E1] A length of roof-insulating material comprises a flexible sheet 1 of foamed resin placed between two leaves 2 of thermoplastic resin film at least one of which extends from a face of the foamed sheet to form a convenient margin 3 of film along at least one of the long edges of the sheet. A convenient margin is defined as being of such dimensions that it can be used to form an insulating system with a water vapour resistant joint between adjacent lengths of the insulating material, by arranging the lengths so that the margin of film overlaps the joints between the lengths. The foamed resin may be a polymer or copolymer of ethylene, propylene, butadiene, styrene, vinyl toluene, 2-methyl styrene, acrylonitrile, vinyl chloride, vinyl acetate, methyl acrylate, methyl methacrylate or ethyl acrylate. The thermoplastic resin may be a polyvinyl halide or a polyolefine, e.g. polyvinyl chloride, polyethylene or polypropylene. In a preferred embodiment, the layers of film are sealed together along a or each long edge of the length of material to enclose the foamed sheet in an envelope of film.
Patent GB-409862-A (GB)
Title: Improvements in or relating to direct current generators
IPC: H02K31/02
Filed: 1933-02-07
Abstract: 409,862. Homopolar generators. SYKES, W., 6829, Merrill Avenue, Chicago, U.S.A. Feb. 7, 1933, No. 3711. [Class 35.] Communators.-A homopolar machine for welding is provided with means for circulating cooling-liquid through the collectors. Fig. 1 shows one half of the machine, comprising a stator composed of a central ring 8 and two end rings 10 connected by bars 9, and a rotor 13 carrying the windings 21 consisting of a number of copper rods passing through the ring 8 and connected at their ends to collectors 18. Stationary exciting-coils 11 are provided. The collectors 18 consist of a number of segments insulated from each other and from the rotor 13 and traversed by zig-zag passages 39 through which liquid is passed through the hollow shaft 35 and passages 44, escaping by passages 50, 51, 36, 38. Collecting brushes 23 connected to rings 27 forming terminals and insulated lubricating brushes bear on the collectors 18.
Patent GB-750714-A (GB)
Title: Control of ice elimination systems
IPC: B64D15/14
Filed: 1954-02-09
Abstract: 750,714. Electric control systems. CLEMINSON, J. A. C. C., HAKE, G., and ROE CANADA, Ltd., A. V. Feb. 9, 1954, No. 3751/54. Class 40(1) [Also in Groups XXXIII and XXXV] An aircraft ice elimination system comprises a plurality of de-icing elements switched into operation successively by a cyclically operated stepping switch which has further dummy positions variable in number under the control of selecting means responsive to the rate of ice formation to vary the cycling time and hence the frequency of energization of the deicing elements As shown, when ice forms on a detector 26 a differential pressure actuated diaphragm 28 closes a contact 23 over which a timer 17 is energized from a source 15. The timer comprises a constant speed motor 34 driving cams 31-33 which interrupt the supply over line 24 at different frequencies any of which may be manually selected by a switch 42. The pulses so selected are fed to the drive magnet (not shown) of a step-by-step switch 18. In successive positions 44a of the stepper 18, relays 45 are energized to connect their respective de-icing heater elements 11 into circuit from a generator 10, each element being energized for substantially the duration of dwell of the switch arm 18 on the corresponding contact 44a. The switch arm 18 is then stepped over dummy contacts 44b until it reaches a selected one of three contacts 44c when a relay 48 is energized to reset the stepper to zero during which time a further relay 50 is energized to prevent pulses from the timer reaching the stepper. The cycling time of the stepper and hence the frequency of energization of the de-icing elements depends upon the selection of the operative contact 44c. This is effected by a known capacitor type detector 53 responsive to the rate of ice formation between probes 54. The device yields a maximum voltage on line 55 for a minimum rate of ice formation which energizes relays marginal 56, 57 to select, i.e. energize the last contact 44c in which case the stepper cycling time is a maximum. As the rate of ice formation increases, the voltage on line 55 decreases to release, first relay 57, and then relay 56, whereby the operative contact 44c is switched first to the intermediate contact, and then to the first contact 44c. A heater 30 is energized over the detector operated contact 23 to remove the ice from this detector at substantialy the same rate as the de-icing elements remove ice from their respective portions of the aircraft. The cycling system may be applied to a hot air or pneumatic de-icing system.
Patent GB-215119-A (GB)
Title: Improvements in or relating to the production of ingots and other metal castings
IPC: C21D1/84
Filed: 1923-02-08
Abstract: 215,119. Kuehnrich, P. R. Feb. 8, 1923. Annealing.-Ingots and other castings are tupped from the mould as soon as set sufficiently to avoid risk of bleeding and while the coolest part of the surface is from 100‹ to 200‹ C. above the recalescence point. The ingot &c. is immediately placed in a container and packed round with a material such as kieselguhr, the quantity being such that the ingot takes at least 96 hours to become cold. The process is stated to be particularly useful in the manufacture of high speed nickel chromium, molten, and other special steel alloys.
Patent GB-1045333-A (GB)
Title: Single point mooring arrangement
IPC: E02B3/24
Filed: 1963-01-30
Abstract: 1,045,333. Buoys and moorings. B. P. TANKER CO. Ltd., J. W. ROSS, and K. W. HOPKINS. Jan. 28, 1964 [Jan. 30, 1963], No. 3796/63. Headings B7A and B7S. A single point mooring arrangement providing mooring and cargo transference facilities for tank ships comprises a mooring member 13, Fig. 1 (not shown), anchored at or near the sea bed and a buoy (11) moored to it by means of one or more mooring cables (12a, 12b, 12c which are maintained within the perimeter of the buoy and which are of such a length that the buoy is held down against its buoyancy so that the mooring cables are maintained under tension to reduce wear.
Patent GB-1094206-A (GB)
Title: Improvements in or relating to fuel cells
IPC: H01M4/86
Filed: 1966-01-27
Abstract: 1,094,206. Fuel cell electrodes. ENGELHARD INDUSTRIES Inc. Jan. 27, 1966 [Jan. 28, 1965], No. 3823/66. Heading H1B. A fuel cell fuel electrode 6 comprises a less than 1/4 inch thick (preferably 10 to 30 mils. thickness), porous non-carbon-supporting substrate 9 having bonded. to its surface and in its pores a mixture of a fluorocarbon polymer (e.g. polytefc-afluoroethylene) and, a carbon-supported platinum group metal (Pt, Ru, Pd; Ir, Os, Rh , the carbon having, a real surface area of from 5 to 250 m.<SP>2</SP>/gm. and a porosity of not more than 0À5 c.c./gm. The supporting substrate is a woven platinum or stainless steel screen or a porous P.V.C. or polytetrafluoroethylene sheet. Platinium gauze sheets 13, 14 contact the catalyst layers 11; 12 to act as current collectors from electrodes 6, 7. The catalyst may be 50% platinum or 35% platinum, 15% ruthenium, on carbon black particles, the catalyst being mixed with P.T.F.E. powder and pressed on to the substrate. Alternatively, the platinium metal alloy is supported on carbon char particles. The mixture may be sintered after brushing on to the porous substrate as an emulsion and drying. The substrate may also be of organic fibres, e.g. acrylonitrile or vinylidene chloride fibres, or of inorganic fibres, e.g. glass or asbestos fibres. Fuel is hydrogen, methanol, ethanol, propane, ethane or butane. Oxidant is air or oxygen. Electrolyte is free of free base, e.g. is sulphuric or phosphoric acid, or caesium carbonate, with carbonaceous fuel, or with hydrogen is KOH or NaOH. The fluorocarbon polymer particle-carbon supported-platinium group metal particle mixture can be applied to the porous supporting substrate by pressing.
Patent GB-110869-A (GB)
Title: Improvements in Machines for Grinding Files.
Inventor: HODGKINSON TOM
IPC: B24B3/60
Filed: 1917-03-16
Abstract: 110,869. Hodgkinson, T. March 16, 1917 File blanks, treating.-Apparatus for grinding round and half-round file blanks has a horizontal trough 13 working to and fro under a grinding- wheel C, and fitted within the trough a holder A provided with jaws or chucks a for clamping the tangs of the files D ; it also has rests b, b<1> for supporting the files, and gearing for imparting rotary or oscillating movement to the chucks. The apparatus shown in Figs. 1 and 2 is for treating round files, and the spindles of the chucks a are geared together by wheels a<2> and driven from a shaft F by a chain f and spindle E. The rest b has semicircular notches to receive the files, and the rest b<1> is adapted to move up and down in guides and is supported by levers B', the position of which is controlled by runners B<2> on a stationary part of the machine. In treating half-round files, they may be clamped in pairs one on each side of a rod, which is clamped in the chuck; or they may be secured singly in the chucks, which then have a rocking motion imparted to them by an eccentric on the shaft.
Patent GB-1127971-A (GB)
Title: Recovering aromatic hydrocarbons by selective extraction of hydrocarbon mixtures
Inventor: FUERST ERNST
IPC: C07C7/10
Filed: 1966-01-28
Abstract: 1,127,971. Recovering aromatic hydrocarbons. BADISCHE ANILIN- & SODA-FABRIK A.G. 28 Jan., 1966 [30 Jan., 1965], No. 3860/66. Heading C5E. Aromatic hydrocarbons are recovered from hydrocarbon mixtures containing aromatic and paraffinic hydrocarbons with or without olefins and naphthenes by a selective extraction process (e.g. liquid-liquid extraction or extractive distillation) in which the solvent is an aliphatic dicarboxylic imide, which may be substituted on the N-atom by an alkoxy or esterified hydroxy group. The solvent may contain up to 30% water and/or other additives, e.g. N- substituted pyrrolidones, piperazines, polyhydric alcohols, urea, and urea derivatives. In a liquid-liquid extraction process a backflow of a hydrocarbon solvent may be used, e:g. propane, butane, pentane, hexane, or iso-octane. A variety of mineral oil fractions which may be treated is mentioned, and the process is exemplified by a liquid-liquid extraction process in which a mixture of benzene, cyclohexane, cyclohexene, and n-hexane is introduced into the middle of a sieve plate column, N-hydroxyethyl succinimide acetic ester as the top, and iso-octane at the bottom. Raffinate from the top of the column, after removal of iso-octane, contains less than 1 % benzene; and extract from the bottom of the column, after removal of the imide solvent, contains 99À6% benzene.