baber/WOPTO huggingface dataset:
Patent GB-684063-A (GB)
Title: Pit prop
IPC: E21D15/28
Filed: 1951-03-12
Abstract: 684,063. Pit props. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG. March 12, 1951 [March 16, 1950]. No. 5896/51. Class 20 (ii). In a telescopic pit prop of the kind comprising inner and outer parts 1, 2 which are clamped together by means of wedges 4, 5, 6, located in a lock 15 on the outer part 2 and adapted to exert pressure on a clamping plate 7 to press it against the inner prop part 1 or against a drag wedge 8, the plate 7 is provided with lower and upper tongues 11, 12 adapted to slide in grooves 13, 14 on the lock 15 to prevent the plate 7 from being displaced into an oblique position. Alternatively tongues on the lock 15 may be arranged to co-operate with grooves on the plate 7. The plate 7 is longitudinally of wedge form and to prevent it from being assembled in an inverted position, the tongues and co-operating grooves at opposite ends of the plate may be arranged differently in shape, location or number.
Patent GB-417303-A (GB)
Title: Improvements relating to control systems for a plurality of parallelconnected asynchronous electric motors
Filed: 1934-02-23
Abstract: 417,303. Maintaining equal speeds of motors. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Feb. 23, 1934, No. 5987. Convention date, May 6, 1933. [Class 38 (iii).] Asynchronous motors 1, 2, 3, driving, for example, the elements of a carding-machine, are connected in parallel on their stator and rotor sides, and remote-controlled stator and rotor relays 4 and 5 respectively, controlling the common stator and rotor circuits, operate positively in predetermined sequence. Upon closure of a switch 6 the relay 4 is closed to connect the common stator circuit to the supply. A delayed contact 24 on the relay 4 subsequently closes and the relay 5 is energized over a circuit including a switch 7 operated simultaneously with the switch 6, to connect the star point of rotor resistances 14. When the switch 7 is opened the relay 5 opens but the relay 4 maintains itself, despite the opening of the switch 6, until a hand switch is opened, or until a thermal relay 15, heated by the current flowing under the increasing potential of the rotor circuits, opens a switch 17. Alternatively, a time relay, set into operation by the switch 7 or by the opening of the relay 5 may be used. In a modification, one phase of the common stator circuit, instead of passing through the relay 4, passes through additional contacts on the relay 5, and the motors drive through elastic or slip couplings. Several switching stations may be provided.
Patent GB-142243-A (GB)
Title: Improvements in internal-combustion turbines
IPC: F02C5/08
Filed: 1919-03-11
Abstract: 142,243. Johnson, H. S. March 11, 1919. Axial-flow type; working-fluid supply; cooling parts.-In an internal-combustion turbine, pumps controlling the working-fluid supply are reciprocated, without the aid of link-work, bv the alternate action upon them of the exploded charge and an air-spring compressed thereby. In moving to the right, the pistons C<5> draw the charge from the induction chamber F into the left-hand end of the cylinders C, whence return of the pistons forces it into the receiver D. The pistons are thus returned by the firing of the charge previously delivered to the right-hand end of the cylinders from the receiver D, and in their return compress air by means of the auxiliary pistons G into the chamber G<3>, which thus. constitute air springs acting to drive the pistons again to the right when the pressure of the exploded charge falls on opening the ports C<4> to allow the charge to impinge upon the blades A<4> and drive the turbine. Disk valves E, E<2> on a shaft co-axial with the shaft A, and driven by gearing therefrom, control the passage of the charge. In starting up, compressed air is introduced to the pumps through the ports C<7> controlled by valves operated by the manual or other turning of the main shaft. Air trapped in the ends of the cylinders G<2> is blown through pipes G<6> to cool the spark-plug electrodes. The rotary valves E, E<2> are separated by a sleeve E<6> in the relatively cool receiver D, and in order to obviate binding of the valves, the sleeve is made of metal of higher expansion coefficient than that of the cylinders. The valve E and sleeve are movable endways on the shaft. and are pressed together by a spring washer E<7>. Cooling-water circulates in the jacket A<7>, steam generated therefrom being led through a valve A<8> and port A<9> to the turbine blades for cooling and driving, while steam generated from cooling-water delivered into the rotor A<2> bv a conduit A<10> is led to the blades by a port A<12>.
Patent GB-271952-A (GB)
Title: Improvements in and relating to screw drives, especially in their relation to luffing davits and cranes
IPC: B63B23/04
Filed: 1926-03-04
Abstract: 271,952. Welin, A. March 4, 1926 Boat-lowering gear. - Relates to screw-and-nut mechanism especially applicable for luffing ships' davits and jib cranes, in which a nut 3 and a screwed rod 1 are connected with a fixed pedestal 22 and a movable member or davit 19, or vice versa. The screwed rod 1 is driven by a gear wheel 8 on a hollow member 5 which is secured to the rod and forms a housing for the thrust bearing 11. The gear wheel 8 and the end of the rod 1 are journaled on a bolt 25, 26 which carries the bearing 11. The head 30 of this bolt is pivoted in brackets 18 on the davit 19, and nut 3 is carried by a tube 2 terminating in an eye 4 pivoted on a pin in the pedestal 22. The head 30 of the bolt 25, 26 is provided with a bearing for the driving spindle 17 which carries a gear wheel 9 and may be actuated directly by the handle 20 or through a low-speed drive 32, 33, 31. A casing 23 protects the rod 1 when extended. The screw-and-nut mechanism may be duplicated as shown in Fig. 4 on either side of the driving spindle 17, which is then carried on a radius rod 34. As shown, the pivot 35 of the radius rod is midway between the foot of the davit and the pivot III of the tube 2, and with screwed rods of equal pitch the centres I, 17, III, are always in line. In a modification the pivot 35 is displaced. towards the pivot III, and the screwed rods are of unequal pitch.
Patent GB-498569-A (GB)
Title: Method of manufacture of alumina
IPC: C01F7/12
Filed: 1938-02-28
Abstract: In the preparation of alumina from raw aluminates of lime, the latter are dissolved in water, and from the solution separated from insoluble impurities alumina is precipitated by carbonic acid with or without initial partial precipitation by auto-crystallization or by the addition of lime.  The separated precipitate is then treated with a preferably hot solution of sodium carbonate of say 2 per cent strength in the presence of sufficient noncarbonated lime to give a CaO : Al2O3 ratio not less than 1,8 to 2,0, and the sodium aluminate solution so obtained finally treated with carbon dioxide, preferably at elevated temperature, to precipitate alumina and recover sodium carbonate for re-use.  Precipitation from the solution of aluminate of lime may be effected by stirring in contact with a solid priming substance, which may be a first portion of the precipitate, alumina or hydrated aluminates of lime or a mixture thereof, with or without calcium carbonate. Preferably cubic crystals of Al2O3.3CaO.6H2O are used, and these may be obtained by precipitating a calcium aluminate solution with lime water and boiling the mixture for two hours; in this case precipitation of the main solution should take place above 20 DEG  C.  Precipitation may take place in stages, with successive removal of exhausted liquor and replacement by fresh liquor, but retention of a part or the whole of the precipitate already formed. The precipitate from the calcium aluminate solution, comprising alumina, calcium aluminate, and calcium carbonate may be calcined, after addition of the necessary amount of calcium carbonate, at 700-900 DEG  C., or at 1000-1300 DEG  C., or above 1300 DEG  C. to decompose the calcium carbonate and it may be to form calcium aluminate, and then be treated with sodium carbonate solution; or sufficient lime may be added to the preferably dried precipitate to give the necessary ratio of CaO to Al2O3, and treatment with sodium carbonate solution follow directly; in the latter case the precipitate and lime may be fed separately and successively to the carbonate solution. Lime for use in the process may be obtained from the calcium carbonate precipitated when the sodium aluminate solution is treated with carbon dioxide, and the latter may be furnished by calcination of the calcium carbonate.  Specification 428,584 is referred to.  The Specification as open to inspection under Sect. 91, comprises also the following subject-matter: complete precipitation of alumina from the calcium aluminate solution by addition of lime in excess, and direct treatment of the precipitate containing lime with the sodium carbonate solution.  This subject-matter does not appear in the Specification as accepted.
Patent GB-436629-A (GB)
Title: Improvements in or relating to propellors for aircraft and the like
IPC: B64C11/34
Filed: 1935-02-27
Abstract: 436,629. Screw propellers. SCO. D'INVENTIONS AERONAUTIQUES ET MECANIQUES S.I.A.M., 1, Route des Alpes, Fribourg, Switzerland. Feb. 27, 1935, No. 6294. Convention date, June 5, 1934. [Class 114] An automatically variable-pitch screw propeller is driven from its shaft through oleopneumatic cylinders and the blades are coupled to the shaft so that variations in angular disposition of the propeller on its shaft result in a modification of the propeller pitch. A screw propeller A is mounted freely on a member B keyed to the propeller shaft M. The member B carries oleo-pneumatic cylinders J and their pistons I are connected by linkages with pins K on the propeller boss. Each propeller blade P is screwed into sockets on the boss and carries a pin q adapted to engage a lug t on the driven member B. The space e between the piston and the ends of the cylinder acts as an air dashpot. There is a control from the pilot whereby the quantity of oil therein can be regulated. In one method of mounting the blades the helical screw taking the root p of the blade is lubricated by means of a fluid automatically supplied through the action of the piston 2 within a cup 3 under the action of variable centrifugal force and retraint of a spring 4. In place of the pin g the blade root may carry a bevel wheel meshing with a bevel on the shaft. In order to damp vibrations, the cylinders J are provided with perforated diaphragms j.
Patent GB-284101-A (GB)
Title: Improvements in continuous rotary filters
IPC: B01D33/067
Filed: 1927-03-07
Abstract: 284,101. Marks, E. C. R., (Dorr Co.). March 7, 1927. Rotary filters.-In a rotary drum filter having filter sections arranged on its inner surface, each section is provided with a flexible filtering medium normally held to its support by suction but movable away therefrom into a flexed position to assist the discharge of the solid matter on application of fluid pressure within the section. A drum 1 having filter sections on its inner surface is mounted by a spider 2 and trunnion 3 in a fixed bearing 4 and by a spider 9, cylindrical extension 8 and a ring 5 on rollers 6, and it is rotated by means of a worm wheel 10 on the trunnion. Each filter section comprises a grid 16, Fig. 4, of wooden slats, a rigid wire screen 17 and a canvas or like medium 22, held in position by wedges 18 between the sections. Pulp under treatment is supplied by a pipe 14 and overflows from a trough 15 into a tank 12 into which the drum dips. Filtrate is withdrawn from the filter sections through pipes 28, 29, 30, the pipes 30 being connected to a valve of the type comprising a rotating plate 33 and a stationary plate 36, the latter having slots connected to a source of suction and ports connected to a pressure pipe 45. The cake is discharged from each filter section as it rises to its upper position by the application of pressure fluid which causes the filtering medium 22 to take a convex form. The medium is preferably subjected to pulsations at this point, a three-way valve on the pipe 45 being operated by worm and chain gear 53, 55 from the main worm driving shaft 11. The dislodged cake falls into a hopper 60 and is removed by conveyers 61, 69. The frame 63 of the conveyer 61 is supported at the inner end by a pivot pin resting in a bearing 65 in the spider 2. In a modified form of apparatus no tank 12 is used, the oil being retained in the drum which is closed at the inner end and has a deep annular flange at the other, the cylindrical extension 8 being omitted and the ring 5 being fixed on the end of the drum itself.
Patent GB-561620-A (GB)
Title: Improvements in collapsible tubes
IPC: B65D35/12
Filed: 1943-04-21
Abstract: 561,620. Collapsable tubes. OHRSTROM, V. T. April 21, 1943, No. 6366. Convention date, July 2, 1942. [Class 66] Collapsable tubes are formed from soft, thinrolled sheet-iron which may be electroplated, the body being closed by a lap seam 2 and the end 3 turned in and gripped between preferably thicker iron plates 4, 5, with or without paper or like washers 10 intervening, the upper plate being formed with a downturned flange 6 engaging the body and the parts being held together by the nozzle 7 which is flanged at 8 and riveted against the lowermost plate at 9.
Patent GB-528570-A (GB)
Title: Projectile driving band
IPC: F42B14/04
Filed: 1939-02-27
Abstract: 528,570. Projectiles. CHRYSLER CORPORATION. Feb. 27, 1939, No. 6469. Convention date, March 3, 1938. [Class 9 (i)] Projectile driving-bands comprise a steel base or re-inforcing-ring and a porous metal bearing layer bonded thereto and impregnated with lubricant. The re-inforcing-ring is non-rotatably secured on the projectile body. As shown, the projectile 11 is provided with a reduced portion 12 with annular grooves 13 located adjacent its extremities, to receive the driving-band 10. The band, of which there may be more Than one, consists of a steel re-inforcing-ring 15, split at 17 and having a pair of inwardly extending lugs 16, a layer 18 of lubricant impregnated, sintered porous metal being suitably bonded to the outer surface of the ring. The band is mounted on the projectile by drawing the ring 15 and its layer 18 around the reduced portion 12 with the lugs 16 disposed in recesses 14 in the reduced portion, the split ends of the ring being welded together. Each of the edges of the ring is deformed, as by spinning at 27, into one of the grooves 13 and, if desired these deformed portions may be welded to the projectile body at circumferentially spaced locations. In the manufacture of sheet porous metal stock for the driving bands a powdered metal charge is formed into a continuous sheet-like briquette by passing it through rolls, the briquettes being cut to a desired length and width or they may be formed directly to the required dimensions by compression of powdered metals in any suitable manner. The briquettes are then clamped to strips of sheet steel and the whole heated in a non-oxidizing and preferably reducing atmosphere in order simultaneously to sinter the briquettes and weld the resulting porous metal to the sheet steel. If desired, the briquettes may be sintered first and then applied to the steel backing and subsequently bonded thereto by heating. Examples of compositions from which the briquettes may be formed are as follows:- (1) powdered lead, tin, graphite, boric acid and copper, (2) powdered tin, boric acid, copper and ex-foliated mica and (3), powdered copper, graphite, boric acid and iron. The pores of the porous metal ring are supplied with a charge of lubricant which is normally in either liquid or solid state at atmospheric conditions. A modification is described in which the composite driving band is secured upon a reduced trailing end portion of a projectile, Figs. 4 and 5 (not shown). The Specification as open to inspection under Sect. 91 describes also a modification in which a sheet-like strip of porous metal is bonded directly to the outer surface of a projectile without the use of a re-inforcing backing of sheet steel. This subject-matter does not appear in the Specification as accepted.
Patent GB-911887-A (GB)
Title: Improvements in or relating to organopolysiloxane-based elastomers
IPC: C08K5/00
Filed: 1961-02-22
Abstract: A silicone rubber of reduced flexure set is made by mixing together (1) 100 parts (by weight) of a siloxane having the formula <FORM:0911887/IV(a)/1> wherein each R is a monovalent hydrocarbon radical with or without halogen or cyano substituents and n has an average value from 1,99 to 2,0, and having a viscosity of at least 10,000 cs. at 25 DEG C., (2) from 10 to 100 parts of a reinforcing silica filter surface-modified with organosilyl groups in which the organic radicals are monovalent hydrocarbon radicals of 1 to 6 C atoms and free from aliphatic unsaturation or fluoroalkyl radicals of less than 7 C atoms in which the a  and b  C atoms are fluorine-free, and (3) from 0,1 to 10 parts of an organic peroxide, heat vulcanizing the mixture and then contacting the vulcanized mixture with an amino compound having a basic dissociation constant in dilute solution in water of from 10-7 to 10-1 at 25 DEG C. A liquid ortho- or polysilicate may also be added to activate the vulcanization. Peroxides specified are benzoyl-, dichlorobenzoyl-, dicumyl- and di-t-butylperoxides and t-butyl perbenzoate.  The amino compound can be ammonia, a primary, secondary or tertiary amine or any mixture thereof, and numerous examples are given, including condensation products of aldehydes and primary amines, and silanes containing one or more amino groups in Si-bonded hydrocarbon (as disclosed in Specification 858,445) or hydrocarbonoxy radicals, and their partial hydrolysates.  The amino treatment involves contacting the rubber with the amino compound, as by (1) painting the rubber surface with a liquid amine, (2) exposing the rubber surface to ammonia or volatile amine vapour, or (3) contacting the surface with a compound which can yield an amine or ammonia in situ.  If desired a compound can be added to the stock which decomposes on heating to give the amino compound in situ.  Examples are given. Specification 783,868 and U.S.A.  Specification 2,610,167 also are referred to.
Patent GB-1106761-A (GB)
Title: Improvements in or relating to explosives devices
IPC: F42B3/02
Filed: 1965-02-15
Abstract: 1,106,761. Blasting cartridges. DYNAMIT NOBEL A.G. 15 Feb., 1965 [15 Feb., 1964], No. 6826/65. Heading F3A. Explosive cartridges for underwater seismic measurements having means to connect the cartridges together to form a column of any desired length each comprises a forward closure 5 which may be frusto-conical and a recessed base closure 6 of similar contour, so that the forward closure of one cartridge nests in the base closure of the preceding adjacent cartridge. Each cartridge is provided with two shackles 7 aligned parallel with the longitudinal axis 13 of the casing 4 and arranged to swivel about an axis perpendicular to the axis 13. When the column is towed behind a ship by a cable attached to a shackle at the forward end, a float being attached to the rear, it assumes a horizontal position. The cover 5 has a sleeve or depression 14 for receiving a fuze or igniter and a similar sleeve may be provided in the base. These sleeves are closed by plugs 15 of plastics material. Both cover 5 and base 6 have annular rims 11, 12, respectively, which co-operate with a connecting sleeve 18 to secure the cartridges together. Beadings 16 are provided on the casing 4 and these are received in grooves 17 in the sleeve 18. Alternatively the cartridges may be secured together by circumferential bands having hook-and-eye end connections drawn together by means of a lever. In addition or in place of these connections a steel strap may extend around the column in an axial direction, the strap being threaded through the shackles.
Patent GB-1431161-A (GB)
Title: Evaporative emission control system for a motor vehicle
IPC: F02M25/08
Filed: 1974-02-13
Abstract: 1431161 Venting fuel tanks NISSAN MOTOR CO Ltd 13 Feb 1974 [17 Feb 1973] 6530/74 Heading B8V [Also in Division F2] An evaporative emission control system for a motor vehicle comprises a fuel tank 10, a fuel vapour storage unit such as a carbon canister 24 and in the pipe line connecting the two, a pressure relief valve 22 which opens when the pressure in the tank is greater than atmosphere by a first predetermined value and also when the pressure is less than atmosphere by a second predetermined value. The valve member 40 carries two resilient sealing faces, one 44 which is biased with the valve member against the pipe 36 by a spring and another 64 which is biased by its own resilience against apertures 50 in the valve member.
Patent GB-1141845-A (GB)
Title: Incremental hob shift mechanism
IPC: B23C9/00
Filed: 1966-02-15
Abstract: 1,141,845. Gear cutting. LEAR SIEGLER Inc. 15 Feb., 1966 [24 March, 1965], No. 6545/66. Heading B3K. A hobbing machine includes a hob carriage 12 mounted for incremental sliding movement under the action of a feed screw member 47, 48 on a half-nut 50, a tubular piston member 58 formed with rack teeth being actuated periodically by fluid pressure to drive the feed screw to a variable extent. An adjustable, screw threaded stop member is used to vary the stroke of the piston rack member 58 and therefore also to vary the increments of movement of the carriage 12. Drive to the feed screw 48 is transmitted from the rack through pinion 56 and one-way clutch 60. After a predetermined travel of the carriage 12 the half-nut 50 is withdrawn from the feed screw 48 by fluid pressure admitted to cylinder 84 and the carriage 12 is returned by fluid pressure cylinder 92 and piston 90. The shaft 16 on which the hob H is mounted is driven from an input shaft 46 through bevel gears 44, 42, shaft 40, gears 38, 28 and splined connection 26 of shaft 18 to which the hob shaft 16 is connected by a taper connection 20.
Patent GB-1492856-A (GB)
Title: Vacuum powered ball valve fuel control
IPC: F02M69/54
Filed: 1975-02-17
Abstract: 1492856 Valves OXFORD INDUSTRIES Ltd 17 Feb 1975 [26 Feb 1974] 6596/75 Heading F2V [Also in Division F1] A vacuum operated fuel valve has a two part chamber 12, 13 divided by a flexible diaphragm 30 into a vacuum chamber 24 above the diaphragm and inlet, outlet and intermediate passages 21, 22, 29 below it, there being a ball closure 27 below the intermediate passage and the diaphragm above it, each urged towards respective ends of the intermediate passage by resilient means 28, 32. A stem 40 may extend between the diaphragm and the ball with which it makes contact at a concave end. Adjustment of the compression of spring 32 may be effected by a screw threaded knob 33. Indicia on the knob and housing relate to spring load and an indicator (42), Fig. 4 (not shown), may rest on the diaphragm and pass out of the housing to indicate its movement.
Patent GB-521186-A (GB)
Title: Improvements in and relating to devices for ventilating the interiors of vehicles
IPC: B60H1/26
Filed: 1938-11-11
Abstract: 521,186. Ventilators. ROE, L. B. Nov. 11, 1938, No. 6624/40. Divided out of 521,171. [Class 137] A ventilator for supplying air to moving vehicles while excluding the entry of rain, and suitable for use in a vertical position, comprises an outer cover o through openings o<SP>1</SP> in which the air enters the space between the cover and a base plate 1. The air passes backwardly and through a cut-away position l<SP>1</SP> of the base plate and then forwardly and upwardly over the curled rear edge m' of a partition n in an internally projecting cover plate m. Water deposited due to the change of direction of the air current runs off through an outlet o<SP>2</SP>, and the air issues into the interior through ports m<SP>2</SP>. The cover o may have additional air inlet apertures in the upper and lower edges.