baber/WOPTO huggingface dataset:
Patent GB-1460723-A (GB)
Title: Emergency stopping  devices for compression ignition  engines
IPC: F02D17/04
Filed: 1973-01-23
Abstract: 1460723 Engine stop gear IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Jan 1974 3345/73 Heading F1K An emergency stopping device for a compression ignition engine comprises a stop-valve D operable to close the air intake E of the engine to atmosphere, means B, C to supply gas to the engines combustion spaces when the stop-valve is so operated, sensing means A responsive to the presence of inflammable material in the atmosphere to which the engine is exposed and means F to operate the stop-valve in response to a signal from the sensing means indicating the presence of a pre-set level of inflammable material in the atmosphere. The gas supplied to the engine may be  carbon dioxide from a reservoir or liquified hydrocarbon or exhaust gases from the engine. The gas sensing means may be a normal commercial type for example in which a platinum wire which forms one arm of a "Wheatstone Bridge" is heated in contact with the atmosphere. It may alternatively comprise an element sensitive to the oxygen partial pressure in the atmosphere. The stop-valve may be as described in Specification 1355049, referred to.
Patent GB-306682-A (GB)
Title: Improvements in and relating to clinching tools
IPC: E04H12/00
Filed: 1928-02-03
Abstract: 306,682. Snapp, J. P. Feb. 3, 1928. Wire strainers.-A device for straining and securing a tie 17' across a wire clamp 12 that lashes two pole sections 10, 11 together comprises a lever 20 having hooks 31, 34 for engaging the clamp and tie respectively. The hooks 31 are integral with a sleeve 26 having a nut 28 housed in a recess in the sleeve and engaging a threaded portion 25 of the lever 20, whereby the distance between the hooks 31 and hook 34 can be varied. On swinging the device from the position of Fig. 2 to that of Fig. 3, the tie is strained and deformed as shown. The device is then reversed as in Fig. 4 and swung upwardly to fasten the projecting end of the tie as shown. The end of the lever is hollow and is formed with a transverse hole, not shown, so that the end of the clamp can be engaged either in the longitudinal hole or in the transverse hole and be bent back to form an eye through which the spiked end 15 of the clamp passes.
Patent GB-442051-A (GB)
Title: Process and apparatus for azeotropic drying of alcohols or ketones
IPC: C07C29/82
Filed: 1935-02-04
Abstract: <PICT:0442051/IV/1> In the dehydration of alcohols or ketones wherein the liquid is vaporized in a still 13 connected with a reflux column 9 from which substantially dehydrated liquid is returned to the still and the vapours from which are condensed in a condenser 11 and are collected in a stratifying and decanting vessel 1, the liquid to be dried is passed into the vessel 1 by a pipe line 2 before entering the column.  A non-water-miscible volatile solvent of the liquid to be dried is introduced by a pipe line 4 to the same vessel and of the two liquid layers formed the lower, containing a large proportion of the water, is discarded and the upper, comprising mainly a mixture of the reflux liquid with the liquid to be dried is returned through pipe 8 to the top of the fractionating column.  The dried liquid passes off as vapour to a condenser 19.  Suitable liquids to be dried comprise secondary butyl alcohol, tertiary butyl alcohol, methyl ethyl ketone, isopropyl alcohol; and suitable refluxing liquids comprise petroleum ether, pentanes, hexanes, heptanes and benzol.ALSO:<PICT:0442051/III/1> In the dehydration of alcohols wherein the liquid is vaporized in a still 13 connected with a reflux column 9 from which substantially dehydrated liquid is returned to the still and the vapours from which are condensed in a condenser 11 and are collected in a stratifying and decanting vessel 1, the liquid to be dried is passed into the vessel 1 by a pipe line 2 before entering the column.  A non-water-miscible volatile solvent of the liquid to be dried is introduced by a pipe line 4 to the same vessel and of the two liquid layers formed the lower, containing a large proportion of the water, is discarded and the upper comprising mainly a mixture of the reflux liquid with the liquid to be dried is returned through pipe 8 to the top of the fractionating column.  The dried liquid passes off as vapour to a condenser 19.  Suitable liquids to be dried comprise secondary butyl alcohol, tertiary butyl alcohol, methyl ethyl ketone, isopropyl alcohol; and suitable refluxing liquids comprise petroleum ether, pentanes, hexanes, heptanes and benzol.
Patent GB-1020651-A (GB)
Title: Improvements in and relating to synchronous dynamo-electric machines
IPC: H02K17/26
Filed: 1963-01-29
Abstract: 1,020,651. Synchronous motors; control of A.C. motors. LICENTIA PATENT VERWALTUNGS-G.m.b.H. Jan. 29, 1963 [Jan. 29, 1962], No. 3661/63. Headings H2A and H2J. A synchronous induction motor has two similar poly-phase rotor windings, one, a starconnected winding 1, 2, 3, is connected directly to slip rings U 1 , V 1 , W 1  and thence to variable resistors (not shown) to give a smooth run up when starting as an asynchronous induction motor. The second rotor winding 4, 5, 6 has phase winding 4 connected in series opposition with phase winding 1 through switch 10 and phases 5, 6 connected together with one end U 2  connected to point 11 on phase winding 3 and the other end to slip ring W 2 . To obtain synchronous operation of the machine the variable resistors are disconnected, switch 10 closed and D.C. applied between slip rings V 1 , W 2 . Switch 10 may be mounted external to the machine when an additional slip ring is required to make the connection between the inner end of winding 4 and slip ring V 1  (already connected to the outer end of winding 1), Fig. 2 (not shown).
Patent GB-1056922-A (GB)
Title: Power transformer or reactor winding
IPC: H01F27/32
Filed: 1964-01-28
Abstract: 1,056,922. Transformers and inductors. BRUCE PEEBLES & CO. Ltd., and S. PALMER. Jan. 13, 1965 [Jan. 28, 1964], No. 3681/64. Heading HIT. The component conductors 2 of the multistrand conductor 1 of a transformer or reactor winding are bonded together. The bonding agent may also provide the insulation between the component conductors or enamel or paint may be used for this purpose. Paper 5 may be used to insulate the multi-strand conductor. The component conductors may be coated with a polyvinyl acetal enamel and then with a liquid thermosetting bonding agent which is not cured until after the multi-strand conductor has been wound into a coil, dried and compressed. The component conductors may be transposed.
Patent GB-1037911-A (GB)
Title: Improvements relating to roof supports for mine workings
IPC: E21D23/00
Filed: 1963-01-29
Abstract: 1,037,911. Advancing mine-roof supports. K. M. GROETSCHEL. Jan. 29, 1963 [Jan. 29, 1962; May 12,1962; Nov. 10, 1962], No. 3729/63. Heading E1E. An advancing mine roof support frame, Fig. 1, comprises a central roof bar mounted on props 17 and adjacent roof bars 30 mounted on a cross bar carried by a forward prop 22, the bars 30 having roof pads 35, 36. Each prop 22, Fig. 3, is mounted in a multi-stage telescopic chock 40, 42, 43A defining pressure chambers 44, 46 communicating by way of conduits 43, 45 with a valve controlled supply source 58, 59, pressure gauge and/or adjustable regulator valve means 61a, 67a being incorporated in the circuit as necessary. The upper end of the prop may also carry a fluid pressure adjustable cap 52, 54 having a pressure chamber 56 fed from a supply line 57. Pressure-relief valves 65, 68 are disposed in the circuit as shown. In a modified multi-stage pit prop, Fig. 4, consisting of telescopic sections 70, 74, 78 and pressure chambers 73, 80 supplied from a valve-controlled power line 87, 88, the circuit includes a relief valve 93 and a pressure gauge or regulating valve 92a, The member 74 carries a cross arm 81 supporting beams 29. The frame, Fig. 6, may be modified to include an outer rectangular arrangement of roof bars 126a, 126b, 126c mounted on four props 117 and an inner like arrangement of roof bars 129, 129a, 129b, mounted on a forward prop 122. Fig. 16 (not shown) discloses a slightly modified arrangement. In a kindred arrangement to that disclosed with reference to Fig. 6, the forward prop unit 222, Fig. 11, is connected to the base prop unit 217 by a push-pull jack 223 and carries a fluid power-operated cantilever extension in the form of a leaf-spring arrangement 314, 317, 312, the prop unit 217 having pivoted cantilever extensions positioned by fluid-actuated wedging means 310, 311. The direction of advance of the latter arrangement can be controlled by ramoperated slides provided in the rear unit, see Fig. 12 (not shown). Guide means for the relatively moving parts are disclosed in Figs. 14 and 15 (not shown). The rear unit, Fig. 17 may consist of seven props 417 jointly supporting a rectangular roof girder construction 426 and extensions 426 of which in an additional modification, Fig. 18 (not shown) constitutes cantilever extensions pivotally positioned by fluid operated wedging means. The forward unit consists of a parallel arrangement of roof bars 429 carrying roof plates 435a, 435h as shown. A final modified frame, Fig. 19, consists of a rear unit 626 and a front unit 627 having, if desired, an additional roof bar 629c supported by the inner section of a multi-slide prop described with reference to Fig. 4 or 5.
Patent GB-708185-A (GB)
Title: Improvements in or relating to electric switches
Inventor: SHOREY LOUIS WILLIAM
IPC: H01H17/16
Filed: 1951-02-15
Abstract: 708,185. Snap-action switches. EDISON SWAN ELECTRIC CO., Ltd. Feb. 15, 1952 [Feb. 15. 1951], No. 3752/51. Class 38(5) A switch is alternately operable "on" and "off" by successive actuations of a primary operating member 15 carrying L-shaped arms 18 having claws 19 alternately engageable with parts 14 of a secondary operating member 10 pivoted at 6 and connected by a dead-centre tension spring (not shown) to a pivoted contact, Fig. 1 (not shown). Member 15 is U- shaped and may be operated by a push-button or, as shown, by a pull chain 16. The arms 18 are pivoted to each other and to member 15 at 17 and are urged upwards and together by a spring 24. Downward movement of the member 15 from the Fig. 4 position engages the left-hand claw 19 with its part 14 to tilt the member 10 counter-clockwise. On release of the chain 16, the arms 15 move up again until the right-hand claw 19 is over its part 14 ready to tilt the member 10 back again on the next pull of the chain. As shown, the arms 18 have stops 21, 22 limiting their relative inward movement, but in a modification (not shown) the two arms may be relatively fixed.
Patent GB-551783-A (GB)
Title: Improvements in indicating or recording temperature changes applicable to vulcanised or other heated articles
IPC: C08J3/24
Filed: 1942-03-21
Abstract: 551,783. Thermometers. DUNLOP RUBBER CO., Ltd., TWISS, D. F., and NEALE, A. E. T. March 21, 1942, No. 3761. [Class 97 (iii)] In the heat treatment of plastic &c. materials which may be enclosed within retaining, shaping or moulding surfaces substances which melt or fuse at known temperatures together with material capable of absorbing the melt of the fusion all enclosed in a protective sheath are introduced between the materials being treated and the retaining &c. surfaces to indicate the temperature attained. The substance, for example, acetylnaphthylamine, which fuses at 130‹ C. may be mixed in powder form with a small proportion of a dye to enhance the indication when fusion takes place and the mixture may be placed between absorbent sheets of paper or textile material, the sheets being afterwards enclosed in a transparent envelope of cellulose acetate which is then interposed between the retaining &c. surfaces say of a mould and the material such as rubber &c. forming a rubber tyre.
Patent GB-265010-A (GB)
Title: Improvements relating to devices for personal wear for use in protecting stockings from splashes
IPC: A43B3/20
Filed: 1926-02-10
Abstract: 265,010. Wood, H. C. Feb. 10, 1926. Gaiters. - A device for protecting the stockings from splashes, of the kind comprising in combination a gaiter-like portion and a golosh, comprises a gaiter portion 5 of thin, flexible, and preferably waterproof material attached to a golosh 2 adapted to cover only the sole and upper part of the shoe and provided with a strap 3 passing round the back of the shoe and designed to prevent the upper portion 5 from wrinkling. The part 5 completely encloses the leg up to the desired height, and has an elastic band or strap 7 to prevent slipping down. In a modification, the part 5 is slit down one side and provided with fastening devices, or is made of elastic material. Vertical strips of leather may be attached inside the part 5 to obviate wrinkling at the ankle.
Patent GB-867563-A (GB)
Title: Improvements in or relating to circuit arrangements for pulse modulation of a magnetron
IPC: H03K3/55
Filed: 1960-02-03
Abstract: 867,563. Valve pulse generating circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 3, 1960 [Feb. 6, 1959], No. 3847/60. Class 40(6) In a circuit for the pulse modulation of a magnetron 7, a capacitive element 1 is successively discharged through the magnetron 7 under control of a first switch such as 6 in parallel with a series combination of a second switch such as 10 and a resistor 3, the second switch being closed before the first switch. The circuit described is suitable for generating short duration pulses. Capacitor 1 is charged from the supply E via resistors 2, 3, 4, resistors 3, 4 having preferably the same value. The switching tube 10 is fired first by a synchronizing pulse from source 11, discharging the stray capacitance 8 to half its voltage and charging stray capacitance 9 to half voltage. The half voltage provided across the magnetron is insufficient to cause appreciable current. After a period determined by the delay circuit 12, the switching tube 6 is fired, discharging capacitor 1 through the magnetron 7 and completing the charge and discharge of the stray capacitance 9, 8. The provision of tube 10 reduces the anode dissipation of tube 6 due to stray capacitance charge and discharge to one quarter.
Patent GB-1509681-A (GB)
Title: Electrical capacitor having a dielectric system and a method of processing the capacitor
IPC: H01G4/22
Filed: 1975-01-29
Abstract: 1509681 Liquid dielectrics McGRAW-EDISON CO 29 Jan 1975 3849/75 Heading C5F [Also in Division H1] An insulating liquid composition for impregnating a wound plastics film capacitor comprises a monohalogenated diphenyl oxide and a monohalogenated C 1-20  alkyl diphenyl oxide. The halogen may be chlorine or bromine and in both constituents at least 80% is located at the para position of the ring, the balance at the ortho position. The composition, which is stated to be biodegradable, may also include epoxide scavengers.
Patent GB-1001896-A (GB)
Title: Plasticised vinyl chloride polymers
Inventor: MILLS ROBERT HAROLD
IPC: C08K5/12
Filed: 1962-05-25
Abstract: Vinyl chloride polymers are plasticized with unsymmetrical esters of organic polycarboxylic acids which are free from olefinic unsaturation and form intramolecular anhydrides, in which esters at least one ester grouping is a phenyl or substituted phenyl ester groping and at least another ester grouping is an alkyl, aralkyl or alkenyl ester grouping.  The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate, methyl methacrylate, diethyl maleate, dibutyl maleate, dibutyl fumarate or vinylidene chloride.  The esters may be derived from phthalic, trimellitic, pyromellitic, succinic, glutaric, adipic, chlorophthalic, chlorosuccinic or dodecylsuccinic acids; and the ester groupings may be phenyl, cresyl, t-butylphenyl, di-t-butylphenyl, t-octylphenyl, nonylphenyl, t-dodecylphenyl, xylenyl or diphenyl; and C1- 24 alkyl, benzyl, phenylethyl, phenylhexyl, ethenyl, allyl, butenyl, isobutenyl, octenyl or decenyl. Specified esters are t-butylphenyl octyl, n-butyl phenyl, ethyl phenyl, n-octyl octylphenyl, n-octyl cresyl, benzyl cresyl, amyl nonylphenyl, dodecyl cresyl, hexadecyl phenyl, benzyl nonylphenyl, benzyl phenyl, n-octyl phenyl and allyl phenyl phthalates, n-octyl phenyl succinate and dibenzyl (isopropylidene bis-p-phenylene) diphthalate.
Patent GB-1090486-A (GB)
Title: Improvements in or relating to instruments for measuring steering forces in motor vehicles
IPC: G01L5/22
Filed: 1966-01-28
Abstract: 1,090,486. Recording-apparatus. ZAHNRADFABRIK FRIEDRICHSHAFEN A. G. Jan.28, 1966 [Feb. 5, 1965], No. 3909/66. Heading G1J. An instrument for recording the steering force at the steering wheel of power assisted or fully hydraulic steering gears for motor vehicles by plotting the steering force at the steering wheel against its angular deflection comprises a spring measuring device 67 for determining the steering force by transmitting to a recording stylus 67a a movement determined by the angular displacement between the steering wheel 61 and a drum 68 by which the steering force is applied against the reactive torque due to the elasticity of the steering column carrying the wheel 61, a pressure measuring device for moving a second stylus in accordance with the effective hydraulic pressure of the servo or fully hydraulic steering gear and beneath the two styli a graph paper carrier moved in dependence on the deflection of the wheel 61. A housing 70 is kept stationary by holding wheel 72 so that an electric motor carried thereby can drive the drum 68. Through its connection to a spring bolt 66 of the device 67, the drum 68 drives the steering wheel 61 through a spring housing 65 and its carrier 64 secured to the journal 63 whose flange 62 is fastened to the wheel 61. The graph paper carrier is carried by the drum 68 and is driven by gearing, one wheel of which rolls round a gear-wheel 78 fixed to the housing 70. The gearing is interchangeable to provide for one complete revolution of the graph paper carrier to correspond to a steering wheel deflection from one extreme to the other or alternatively to a 90 degree adjustment. In other embodiments the vehicle steering wheel is replaced by one forming part of the.instrument. This wheel may be turned by hand or by an electric motor. The wheel carries the graph paper carrier whose drive gearing includes a wheel which rolls round a gear-wheel fixed on a hub attached to the tube encasing the steering column.
Patent GB-488017-A (GB)
Title: Apparatus for determining the inclination of an axle to two different planes
IPC: G01C9/24
Filed: 1938-02-08
Abstract: 488,017. Inclinometers. SVENSKA TECALEMIT AKTIEBOLAGET. Feb. 8, 1938, No. 3917. Convention date, Feb. 11, 1937. [Class 97 (ii)] An apparatus for indicating the inclinations of an axle, particularly the axle about which a motor car front wheel is turned to effect steering, comprises a block 1 carrying a spirit or other level 2 and slidable in two directions at right angles on the preferably spherically curved upper surface of a support 6 which is pivotally secured to the axle by means of the arm 7. The block 1 may carry a fixed scale 5 and two longitudinally slidable scales 3, 4, and the support 6 may carry two index lines 10, 11 at right angles. In use the support 6 is secured to the axle of a motor car front wheel and the latter pointed in the straight ahead position. The block 1 is then moved in the direction of the index line 10 until the level 2 is brought to zero whereupon the wheel camber is indicated by the index line 11 on the scale 5. The wheel is then turned until an inclined edge 12 on the support 6 is parallel to the longitudinal axis of the vehicle, the block 1 moved on the support 6 until the level 2 is brought to zero, and the scales 3, 4 adjusted to bring their zero marks opposite the index lines 10, 11, respectively. On turning back the wheel until an inclined edge 13 on the support 6 is parallel to the longitudinal axis of the vehicle and again moving the block 1 to bring the level 2 to zero, the caster angle is indicated on the scale 4 and the axle camber on the scale 3.
Patent GB-719238-A (GB)
Title: Improvements in or relating to meso-substituted carbo-cyanine dyes
Inventor: KENDALL JOHN DAVID
IPC: C09B23/06
Filed: 1952-02-14
Abstract: Cyanine dyes having the formula:  <FORM:0719238/IV(c)/1> wherein R1 and R3 are alkyl groups, R4 and R5 are alkyl groups or together complete a heterocyclic nucleus, X is an acid radicle and D1 and D2 complete a benzthiazole or benzoxazole nucleus, are prepared by reacting the corresponding meso-substituted mercapto compound with a compound of the formula R4NHR5.  R1 and R3 are preferably alkyl groups containing up to 4 carbon atoms, and R4 and R5 may be similar alkyl groups or form part of a piperidine or morpholine ring, including a 4-methyl piperidine ring.  The benzene rings of the nuclei D1 and D2 may carry substituents and the preparation of 3 : 31-dimethyl-5 : 51-diphenyl-9-piperidine-oxacarbocyanine iodide is given. According to the Provisional Specification, R1 and R3 may also be aralkyl or aryl groups and D1 and D2 may complete any heterocyclic nuclei known to be of use in cyanine dyes.
Patent GB-807619-A (GB)
Title: Improvements in or relating to thermocouples
Inventor: GOLDSMID HIROSHI JULIAN
IPC: H01L35/18
Filed: 1956-02-08
Abstract: 807,619. Thermocouples. GENERAL ELECTRIC CO. Ltd. Jan. 30, 1957 [Feb. 8, 1956], No. 3968/56. Class 37. In a thermocouple comprising elements of P- and N-type bismuth telluride each element consists of one or more crystals each disposed with its principal axis in a plane perpendicular to the line joining the hot and cold junctions, and the resistivities Pp and P N  milliohm cms. measured along this line are such that the expression [1.14 - (P P  - 1.23)<SP>2</SP> - (P N  - 1-28)<SP>2</SP>] is less than zero if T, the mean operating temperature, is not greater than 293 K. or such that the expression [(2.54 - 0.005T)<SP>2</SP> - (Pp - 2.87 + 0.0056T)<SP>2</SP> - (Pn - 2.92 + 0.0056T)<SP>2</SP>] has a value not less than zero if T is above 293 K. The invention is based on the fact that crystals of bismuth telluride have anisotropic # and p, and that the product #p, which forms the denominator of a known expression for the figure of merit # of a thermocouple, has a minimum value in a direction perpendicular to the principal crystal axis. With the crystals orientated to give the optimum # it has been found that 6 has a value within 10 per cent of the maximum possible at temperature T with Bi 2 Te 3  elements if the above resistivity criteria are satisfied. The Bi 2 Te 3  is prepared by the following steps: mixing stoichiometric proportions of bismuth and tellurium in a cylindrical silica bomb with a small amount of the donor iodine or the acceptor lead, evacuating and sealing the bomb, heating to 900 C. for 3 hours, loading the cooled reaction product in an elongated silica boat, melting by induction heating, resolidifying, and then traversing a molten zone from one end of the boat to the other in an inert atmosphere. This produces a monocrystalline ingot or polycrystalline mass in which the principal crystal axis is transverse to the boat axis. Amounts of impurities satisfying the resistivity criteria for T = 293 are 0.07-0.16 per cent by weight of iodine for the N-type material and 0.03-0.12 per cent by weight of lead for the P-type material.