baber/WOPTO huggingface dataset:
Patent GB-515580-A (GB)
Title: Improvements in or relating to ignition systems for internal combustion engines
Filed: 1938-06-07
Abstract: 515,580. Igniting systems. BENDIX AVIATION CORPORATION. June 7, 1938, No. 16887. Convention date, June 10, 1937. [Class 7 (iv)] Where an ignition generator is to be used with an engine having fewer cylinders than the full number for which the generator is designed, superfluous impulses are dissipated through a resistance 15 mounted on the generator casing or enclosed in the nipple, Fig. 4, by which the leads 4, 5 are attached to the generator. In the latter arrangement, the protruding insulating part of the nipple is removed, and a conducting cap 38 substituted to earth the outer end of the resistance 34. A quarter of a megohm and an energy-absorbing capacity of about one watt are instanced as suitable values for the resistance.
Patent GB-1032949-A (GB)
Title: An improved cutting device
IPC: B26D1/38
Filed: 1965-04-21
Abstract: 1,032,949. Cutting webs. SCHWEIZERISCHE INDUSTRIE-GESELLSCHAFT. April 21, 1965 [April 22, 1964], No. 16898/65. Heading B4B. A device for cutting a length of material into sections comprises a hollow cylindrical body 1 the wall of which has slots 6, 7 to receive the length of material 8, one slot having a cutting edge 1a which, when the body is oscillated, cooperates with a cutting edge 2a on a pin 2. The body is oscillated by means of an eccentric which acts by way of a rod on a pin 9 secured to a lever 10 on the body. The body is mounted eccentrically on the pin in one of its two end bearings. Segments are arranged on the pin at the bearings and are urged by springs against the interior of the body.
Patent GB-947017-A (GB)
Title: Light stable thermoplastic resin compositions
IPC: C08K5/00
Filed: 1962-05-02
Abstract: Cupric ammonium nitrate is prepared by co-crystallization of a solution containing copper nitrate trihydrate and ammonium nitrate. Rare earth ammonium nitrate is prepared by dissolving rare earth sulphate in water, precipitating rare earth hydroxide by addition of ammonia, slurrying the hydroxide in water and adding nitric acid followed by ammonium nitrate, and subsequently co-crystallizing. Cerium-free rare earth ammonium nitrate may be prepared by the procedure set out above, except that the rare earth hydroxides are treated with conc. hydrochloric acid to dissolve all hydroxides except cerium hydroxide which may be filtered off before precipitation of the rare-earth hydroxides by means of sodium hydroxide.  Manganous cerous nitrate is prepared by co-crystallization of a solution containing manganous nitrate hexahydrate and cerous nitrate hexahydrate.  Aluminium cerous nitrate is prepared by co-crystallization of a solution containing aluminium nitrate nonahydrate and cerous nitrate hexahydrate.ALSO:A polymer of an olefin containing at most 15% of residues other than olefin residues is stabilized with ammonium nitrate, a metal nitrate, a polyvalent metal ammonium nitrate, a polyvalent metal cerous nitrate or a cupric or nickel di- or triisopropylamine nitrate. Solvents may be used in forming the polymer compositions and specified are water and alkanols.  The examples illustrate the stabilization of polyethylene.
Patent GB-806816-A (GB)
Title: Improvements in or relating to protection devices for pipe flanges or the like
IPC: B65D59/00
Filed: 1956-06-01
Abstract: 806,816. Flange protectors : stoppers. HOWARD, H. Feb. 5, 1957 [June 1, 1956], No. 16935/56. Classes 94(1) and 125(3). A protective cap for a circular flange on a pipe or container is made of rubber or like resilient material and comprises a cylindrical wall A, an end wall B and a lip C spaced from the wall B by the thickness of the flange to be protected, the lip C being formed with a tongue D to facilitate application and removal of the cap. The tongue D may be formed with a hole E through which a string or wire may be passed to support the cap when not in use.
Patent GB-1286386-A (GB)
Title: Improvements in or relating to mechanically-operated electrical springsets
Inventor: O'HALLORAN VINCENT VICTOR
IPC: H01H50/58
Filed: 1970-04-09
Abstract: 1286386 Contact arrangements PLESSEY CO Ltd 19 April 1971 [9 April 1970] 16965/70 Heading H1N A contact spring set of the kind shown has an operating lever 25 pivotally supported in a groove 27 formed in the buffer block 18 and retained there solely by engagement of the block with a mounting plate 10. The lever is of plastics material.
Patent GB-1374866-A (GB)
Title: Method for the manufacture of a pallet of plastics material for storing different materials or products device for carrying said method into practice and product obtained thereby
IPC: B65D19/32
Filed: 1972-04-12
Abstract: 1374866 Moulding pallets BNANIA 12 April 1972 [13 April 1971 22 June 1971 17 July 1971] 16978/72 Heading B5A [Also in Division B8] Plastics pallets are formed by driving wooden reinforcing slots on to pins extending from one of the mould walls, simultaneously introducing pre-expanded plastics and steam into the mould and cooling. As shown in Fig. 1, the apparatus comprises a base-plate 11 with mould parts 12, 13, with pins 14 being screwed at 15 and held by nuts 16 into the base-plate 11 and extending through apertures 17 in mould part 12 to support wooden slots 18. The mould 10 is filled with pre-expanded plastics, e.g. polystyrene 19. The slats 18 preferably have a sawtooth profile to increase adhesion to the plastics. The article (20, Fig. 3, not shown) has a flat upper surface (21) with slats (18) perpendicular to supporting ridges (22-24), which may have holes (25, Fig. 4, not shown) to reduce weight. In the embodiment of Figs. 6, 7 (not shown) the pallet (100) is octagonal, has a central hole (170) for discharging contents and a peripheral wall (190) which is grooved at (200) to receive container (210).
Patent GB-415233-A (GB)
Title: Supplying mechanism especially for screw cutting machines
IPC: B23Q7/00
Filed: 1933-06-14
Abstract: 415,233. Feeding screw-blanks from shoots. STENMAN, P. L., 32, Ostermalmsgatan, Stockholm. June 14, 1933, No. 17025. Convention date, June 14, 1932. [Class 117.] The lowermost blank in a feed guide 5 is separated from the others by a wedge faced separator 4 oscillated towards them by a rod 3 so that a blank is guided into the feed slot 2 The feed guide 5 may be oscillated also to bring the blank directly above the slot 2. A push rod 6 then delivers the blank into the screwing machine. The upper surface of the separator 4 is sloping as shown and the feed guide has a corresponding recess to accommodate it.
Patent GB-740405-A (GB)
Title: Improvements in and relating to quick release mountings
Inventor: DOW ALEXANDER BRIAN RODERICK
IPC: H02B1/38
Filed: 1953-06-19
Abstract: 740,405. Fastenings; hinges. IMHOF, Ltd., A. June 17, 1954 [June 19, 1953], No. 17087/53. Classes 44 and 65 (2). A quick - release pivotmounting for a lid or panel P pivoted on a frame F, comprises a bracket M for attachment to the lid or panel having an open-ended slot 11 adapted to receive a pivot pin 6 provided on the frame and a latch 12 on the bracket, and normally spring-urged into a position where a hook portion 18 of the latch co-operates with the slot 11 to retain the pivot pin 6 therein, the pin being releasable from the slot by depressing the latch against the action of the spring. As shown, the pivot pin 6 is secured at each end to a side member 2 of the frame F, and co-operates with slots 11 at each end of the panel. The pin when engaged in the slots 11, allows the panel to be swung into the position shown. The panel may be removed by depressing a flange 21 of the latch 12.
Patent GB-198231-A (GB)
Title: Improvements in superheaters for, and in superheating arrangements of, steam engines working expansively
IPC: F22G1/04
Filed: 1922-06-21
Abstract: 198,231. Jouanno, A., (Jouanno, C. G.). June 21, 1922. Smoke-tube superheaters; special arrangement of supply and delivery valves; overheating of tubes, preventing.-Superheaters for the high and low pressure stages of a compound engine are provided with valves allowing steam at boiler pressure to circulate through the superheaters when the engine is not working. The passage of steam to the superheater 12, Figs. 1 and 2, from which the steam is taken to the high-pressure cylinder of a locomotive engine, is regulated by a valve 6 allowing a small quantity of steam to pass when the valve is in its closed position. The passage of steam from the low-pressure superheater 13 to the low-pressure cylinders 20, 20a is controlled by a valve 17 which is so connected to the regulator 6 that the valves operate similarly and simultaneously. A valve 23 allows highpressure steam to pass from high-pressure cylinder supply-pipe 8 to the inlet header 12 of the low-pressure superheater when the steam supply falls consequent upon closing the regulator 6. The valve 23 is normally maintained in its closed position by the pressure of the steam in the inlet header 12 acting on a piston 24 connected to the valve. The outlet header 14 of the lowpressure superheater may be placed in communication with the boiler steam space through pipes 27, 29 and a valve 28. This valve is normally maintained in its closed position by a piston 31, Fig. 4, acted upon by the steam pressure in a pipe 33 connected to the cross-pipe 21, Fig. 1, between the valve chests of the low-pressure cylinders. A groove is formed in the piston 31 to allow a small quantity of steam to pass to the low-pressure cylinders when coasting through the pipe 27 and then through a spring-controlled valve 39 to a pipe 41 connected to the cross pipe 21. The superheaters may be completely cut off from the boiler steam space by screw-down valves. In a triple or quadruple expansion engine, a valve similar to the valve 23 is fitted in connection with each additional super-heater.
Patent GB-1294409-A (GB)
Title: Apparatus for extracting certain components from a roll assembly
Inventor: ADAIR JAMES RICHARD
IPC: B21B31/10
Filed: 1970-04-10
Abstract: 1294409 Rolling UNITED ENG & FOUNDRY CO 10 April 1970 [21 April 1969] 17131/70 Heading B3M Apparatus for extracting associated chocks, rest bars and guides from a roll assembly 10 comprises a cradle 21 (Fig. 2) which engages the toll 18 at neck portions 18b and 18c to support the roll assembly for removal of bearing chocks 11 and 12 by sleds 44 and 45, and rest bars 13 and 14 together with roll guides 15 and 16 by cars 31 and 32. The cars 31 and 32 are positioned by piston cylinder assemblies 41a and 42a to the position as shown at the right-hand portion of Fig. 1 so that L-shaped latch 37 engages with the rest bar with catch 38 engaging the top of the rest bar. After removal of bolts and keeper plates, the piston cylinder assemblies 41a and 42a displace the cars 31 and 32 away from the roll assembly. The roll assembly is then positioned by cradle 21 so that the chocks 11 and 12 and coupling member 17 are supported by sleds 44, 45 and 49. The coupling member 17 is extracted by displacing sled 49 by piston cylinder assembly 50 after which piston cylinder assemblies 47 and 48 displace the sleds 44 carrying the chocks 11 and 12 away from the roll 18. In a second embodiment the cradle is provide with adjustable yokes 65 having rack gears 66 which are mutually engaged by a pinion 67 so that on rotation of the pinion the yokes 65 are displaced away or towards each other. Jacks 68 are used to elevate platens 61a, 62a and 63a to a desired position for extracting the chocks and coupling member.
Patent GB-584810-A (GB)
Title: Improvements in and relating to magnetic induction electron accelerators
IPC: H05H11/00
Filed: 1944-09-07
Abstract: 584,810. Magnetic induction accelerators. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 7, 1944, No. 17139. Convention date, Sept. 10, 1943. [Class 39 (i)] In a magnetic induction accelerator the accelerator chamber 10 comprises several portions with internal conductive coatings 30, e.g. of silver, cemented together as at 31, but electrically connected through resistances: 34 of the order of 1000 ohms to prevent circulatory currents.
Patent GB-996587-A (GB)
Title: Improvements relating to controllable rectifier parallel inverter circuits
Inventor: GIBBS MAURICE GORDON
IPC: H02M7/523
Filed: 1961-05-11
Abstract: 996,587. Inverting. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. May 1, 1962 [May 11, 1961], No. 17167/61. Heading H2F A parallel inverter circuit has a pair of thyristors included in an oscillatory circuit so that after each thyristor has been fired it is rendered non-conducting by the current in the oscillating circuit attempting to reverse. Thyristors TR33, TR22 supply an inductive load R, L4 from a D.C. source. The gate drive circuit GD fires the thyristors alternately and they are turned off by oscillations in the circuit comprising capacitors C11, C22 and inductor L11. Since the thyristors turn off independently of each other the frequency may be higher than with systems employing a commutating capacitor. The load itself may be part of the oscillatory circuit (Fig. 4, not shown).
Patent GB-834978-A (GB)
Title: Nuclear reactor with gas cooling
IPC: G21C3/28
Filed: 1958-05-29
Abstract: 834,978. Nuclear reactors. BROWN, BOVERI & CIE A. G. May 29, 1958 [June 7, 1957], No. 17229/58. Class 39(4). In a gas-cooled (or liquid-cooled) nuclear reactor the fuel elements and fertile elements are small moulded bodies of the same shape (e.g. spheres or cylinders) and of such a size (e.g. 3 cm. diameter) that they remain essentially at rest while the coolant flows through the loose accumulation of elements, so that the pressure drop in the coolant is fixed and not excessively large. The power needed for coolant circulation is less than 30% of the gross electrical power generated. The elements are continuously renewed and used elements are removed by devices such as worms or shaking grates.
Patent GB-1449114-A (GB)
Title: Bolted assembly
IPC: F16B35/04
Filed: 1975-04-25
Abstract: 1449114 Drill casings TAMPELLA AB OY 25 April 1975 [25 April 1974] 17251/75 Heading B4C [Also in Division F2] The body components 2-4 of a rock drill are held together by bolts each of which has a waisted portion 7 and a portion 6 of polygonal or other non-circular cross-section between the waisted portion 7 and a threaded end portion (not shown), the portion 6 non-rotatably engaging in a correspondingly shaped hole in the component 4. This enables a nut 5 to be tightened on the bolt without torque-loading the waisted portion 7 and without the bolt turning relative to the component 4.
Patent GB-459483-A (GB)
Title: Improvements in or relating to change speed chain gearings for cycles
IPC: B62M9/126
Filed: 1936-06-22
Abstract: 459,483. Change-speed chain gearing. JUY, L. C. H., 38, Rue de Metz, Dijon, Cote d'Or, France. June 22, 1936, No. 17272. Convention date, June 26, 1935. [Class 80 (ii)] [See also Group XXXI] A device for shifting a cycle-chain laterally into engagement with different-sized driven sprockets, comprises smooth guide- and tensioning-rollers 1, 7, the former being provided with side-flanges 2, 3, for producing the lateral shift. The flanges 2, 3 are bolted to the tensioning-lever 6, which carries both rollers, and is shifted laterally as a unit.
Patent GB-715863-A (GB)
Title: Process and apparatus for the removal of water or other liquid from solid materials
Inventor: KENNAWAY ALEXANDER
IPC: F26B17/26
Filed: 1952-07-09
Abstract: 715,863. Drying discrete materials. IMPERIAL CHEMICAL INDUSTRIES. Ltd. June 22, 1953 [July 9, 1952], No. 17294/52. Class 34(2) In a process for continuously drying discrete materials the material is passed upwards through a helical elevating vibratory conveyer at lest part of the helical trough of which is heated. An electrically heated trough 1 is enclosed by an outer cylinder 2 of metal and an inner cylinder 3 of an insulating material, the trough being separated from the cylinder 2 by an insulator 4. Near the top of the trough an air supply pipe 5 enters through the inner cylinder 3 and an exit pipe 6 near the base of the drier leads the air to a condenser 7, fan 8 and thence to the heater 9 whence it passes again to the trough in countercurrent to the material which is supplied from a hopper 10 to a vibrating conveyer 11, surrounded by a flexible tube 12 to prevent escape of warm air, and thence to the trough 1, dried material leaving through an outlet 13. The drier is supported on a base 14 through resilient links 15 and is vibrated by means of a motor-driven hydraulic piston assembly having a receiver 16. The trough is uniformly heated or a relatively small length at the point of entry has maximum heat applied and the heating is reduced over the remainder, the latter part being unheated. The thickness of the layer of material is preferably not more than 0.25 inch and among the materials dried are cereals, dyestuffs, chemical salts, hygroscopic materials and polymeric materials such as polyvinyl chloride, polytetrafluoroethylene polythene and polymethyl methacrylate.
Patent GB-881824-A (GB)
Title: Improvements in or relating to electro-magnetic wave transmission arrangements
IPC: H01P1/02
Filed: 1960-05-17
Abstract: 881,824. Waveguides. TELEFUNKEN G.m.b.H. May 17, 1960 [May 22, 1959], No. 17364/60. Class 40(8). The frequency-dependent phase-shifts occurring between the two orthogonally resolved components of a circularly or elliptically polarized wave are compensated over a band of frequencies by a section of waveguide of appropriately chosen crosssection and length. The anti-clutter radar apparatus shown comprises a circularizing device 3, a bend 5, a horn 2 and a reflector 1. The bend 5 and the horn 2 (which may have a rectangular cross-section) introduce differential phase-shifts in the horizontal and vertical components of the wave propagated through the system causing a departure from circularity or from the desired ellipticity of the transmitted wave. This differential phaseshift is, moreover, frequency-dependent. According to the invention, the system includes a length L of rectangular waveguide whose cross-section is chosen to produce a phase-shift between the orthogonal components of the wave which is frequencydependent in a sense tending to oppose the undesired frequency dependence. Thus the overall differential phase-shift is maintained constant over a band of frequencies. This constant phase-shift may be compensated by adjustment of the circularizer 3, e.g. if it is desired to produce circular polarization at the mouth of horn 2 the circularizer is adjusted to produce a wave of such ellipticity that it would be converted to circularity by the subsequent phase-shifts. An adjustable dielectric plate 6 which is designed to affect only one of the two orthogonal components, can be used for this purpose. From the arbitrarilychosen width and length of the section L the phase-shift of the vertical component may be calculated. The height of the section is then chosen to produce a frequency dependent phase-shift in the horizontal component such that the overall differences in phaseshift between the two components at either extremity of the frequency band are made equal.
Patent GB-1178454-A (GB)
Title: Improvements relating to Control Systems for Controlling the Synchronous Running of Electric Induction Motors.
Inventor: WEST RICHARD ALFRED
Filed: 1967-04-15
Abstract: 1,178,454. Control of two A.C. motors. M.T.E.-CONTACTOR (SYSTEMS) Ltd. 16 April, 1968 [15 April, 1967], No. 17404/67. Heading H2J. Induction motors M1, M2, which are coupled to separate or independent drives, are interconnected to operate in synchronism, a contactor F being energized when a master controller MC is moved to a first forward notch; The brakes b1, b2 are released, and contactor SP1 is actuated so that single-phase energization of the stator winding is changed to three-phase energization. Contactor CC connects the rotor resistance to the slip-rings. The rotor resistance is then reduced for acceleration of the motor, a relay FS operating at 70% of synchronous speed to disconnect contactors SP1, CC, so that the motors coast with the stators energized only from two supply lines. If a following wind then causes a further increase in speed, relay OS responds to close contactors CC, SP2, and an appropriate rotor resistance-regulating contactor for single-phase braking. The braking action is relaxed when relay OS opens at a lower speed. If there is no following wind, driving power is substituted for coasting by reclosing relay FS at a suitable lower speed. When the controllor MC is moved to its "off" position, relays SP1, CC, are de-energized and the motors coast to standstill, the synchro-tie being retained by crosscoupling the rotors and stators, and single-phase energization of the stators. When a low speed is reached, relay LS responds to apply the brakes and to de-energize the relay F. Reverse-current braking may be introduced by reversing the controller MC. Operation of the controller from standstill in the reverse direction closes contactor B instead of the contactor F, subsequent operation being similar to that described.
Patent GB-1179988-A (GB)
Title: Film Spool.
Inventor: GERSCH JOSEF
IPC: G03B17/30
Filed: 1968-04-11
Abstract: 1,179,988. Film spool. AGFA-GEVAERT A.G. April 11, 1968 [April 13, 1967], No.17485/68. Heading G2A. A film spool 1 associated with a film cartridge has a slot 4 provided with holding projections 5 and securing means 6 for fixing the perforated end of a film, the spool core being further provided with at least one flattened portion 3 whose position can be checked when the spool is in the cartridge by an associated marking 9 on its outermost edge. The flattened portion enables satisfactory threading of the film, allowing for normal variations in the degree of curling of the film.
Patent GB-584490-A (GB)
Title: Method and apparatus for making plywood tubing
IPC: B27D1/08
Filed: 1943-10-25
Abstract: 584,490. Plywood tubes. CLARK, G. M. (United States Plywood Corporation). Oct. 25, 1943, No. 17555. [Class 99 (ii)] A plurality of veneer sheets 14 coated with adhesive are rolled to cylindrical form and inserted one within the other within a cylindrical mandrel 10. The joints of the sheets are arranged out of line and the split mandrel is contracted by clamps 12 till the edges of the sheets abut. A tubular, flexible, fluid-tight membrane 15 is drawn within the tube and has its ends turned over and secured to the mandrel: The ends of the tube are sealed by gaskets and by the end caps of a casing 18 in which the mandrel is supported, and hot air is admitted under pressure within the membrane through an end cap.
Patent GB-771815-A (GB)
Title: Process for the production of solutions of polyacrylonitrile and of acrylnotrile copolymers
IPC: D01F6/18
Filed: 1955-06-17
Abstract: Polymers and copolymers of acrylonitrile are dissolved in an aqueous solution of the zinc chloride-ammonium chloride complex ZnCl2.-2NH4Cl.  The solvent mixture may consist of 30-45 per cent of zinc chloride, 23-45 per cent of ammonium chloride and 20-40 per cent of water.  The solutions are used in the preparation of fibres.
Patent GB-719270-A (GB)
Title: Sausages with double skins
IPC: A22C13/00
Filed: 1952-07-14
Abstract: Sausages are protected from drying up by providing a layer or skin or fat just inside the outer skin.  Such layer is provided by draping two or more crossed lengths of bacon fat across the top of a vertical filling tube so that they hang down the sides so that they are forced into the outer skin by and along with the meat during the filling. The length of fat may become overlapped to make a complete fat enclosure.