baber/WOPTO huggingface dataset:
Patent GB-140422-A (GB)
Title: Car construction
IPC: B61F1/14
Filed: 1920-03-15
Abstract: 140,422. Commonwealth Steel Co., (Assignees of Pflager, H. M.). Jan. 12, 1918, [Convention date]. Springs, arrangement of, and mounting bodies on. - A bogie truck is fitted with a compensating-device located beneath the lower abutment of the main supporting springs which is guided to have a vertical movement relatively to the truck side frames. The main springs 12 are arranged between an upper abutment 9 surrounding a king bolt 13 and having a bearing on a member 10 secured to the bolster 11 and a lower abutment 8 guided by a tubular extension engaging a similar extension on the upper abutment and by lower extensions 8<a> working in sockets 5<a> in the truck frame. The compensating springs 14 are arranged in a central pocket 5<b> in the truck frame and are normally compressed by the abutment 8 resting on the truck frame. When the load is relieved from the springs 12, the springs 14 move the abutment 8 upward to the limit permitted by the bolts 15 and springs 16. The truck side frames are connected together by a tie 17.
Patent GB-782498-A (GB)
Title: Improvements in or relating to electric circuit interrupter
Inventor: AINSWORTH CHESTER DREW
IPC: H01H9/34
Filed: 1955-01-24
Abstract: 782,498. Arc-rupturing in switches. ALLISCHALMERS MANUFACTURING CO. Jan. 24, 1955, No. 7797/56. Divided out of 782,497. Class 38 (5). In a circuit-breaker having an arc chute with spaced insulating barrier plates 46, arc constricting members are provided in the spaces between adjacent barrier plates. The members may be formed as integral projections 56 on the surfaces of the barrier plates and provide constricted arc passages 61 between the plates which extend as fins from the side walls 44, 45 of the shoot. The projections 56 may converge from adjacent the arc receiving end 58 of the arc shoot to lines 60 and then extend parallel to the surfaces of the plates to flanges 62. As an arc rises in the arc shoot it is folded in a horizontal plane around the free edges of the plates and then constricted in the passages 61 between the plates. In addition, the arc may be folded in vertical planes around the flanges 62. Various modifications are shown in which the projections converge to the flanges, Fig. 5 (not shown), converge to the flanges and then diverge towards the exhaust end of the arc shoot, Figs, 8 to 11 (not shown), and are arranged as tongues which provide small traps for the arc products, Figs. 18, 19 (not shown).
Patent GB-492288-A (GB)
Title: Improvements in and relating to apparatus for producing ground or polished glass strip
IPC: B24B7/24
Filed: 1937-03-17
Abstract: 492,288. Grinding and polishing glass. PILKINGTON BROS., Ltd., WALDRON, F. B., HOGG, P. M., and BAILLIE, G. H. March 17, 1937, No. 7819. [Class 60] In a machine for producing glass strip, ground or polished on both sides, the molten glass 1 from a tank furnace 2 is formed into strip 10 by rollers 4, 5, &c., the strip then passing over a bed 6 on to a roller bed 7, and then, on a roller bed 9, through a lehr 8, from which is passes to pairs of opposed grinding and polishing tools 11, 12, being fed past the tools by pairs of opposed rollers 13. The rollers 4, 5, 7, 9 are driven from a variable speed motor 14 through bevel or bevel and chain gearing 16, 18, 19, and in order to prevent breakage of the glass, one or both of the rollers 13 are driven by means exercising a predetermined torque on the rollers. As shown in Fig. 2, each pair of rollers 13 is driven by an independent induction motor 20 through wormgearing 21, 22, the motors being driven from an alternator 23 driven by an adjustable, but constant speed motor 24, the speed being adjusted to suit the thickness of the glass, &c. In place of the induction motors series direct current motors arranged in series, or shunt motors with their armatures in series, may be used. In a further modification, a group of pairs of rollers may be driven, through differential gearing, by a single motor. Specification 347,587, [Group XII], is referred to.
Patent GB-235960-A (GB)
Title: Improvements in and relating to electric cut-out switches
IPC: H01H9/44
Filed: 1924-03-27
Abstract: 235,960. English Electric Co., Ltd., and Zweigbergk, T. March 27, 1924. Magnetic blow-outs comprise two coils 1, 2 mounted on the same core 7, the coil 2 being in series with the contacts 12 of the circuitbreaker when the latter is closed, and the coil 1 being connected at one end to the coil 2 and at the other end to a body such as a metallic shield 5, so that it is only energized when the circuit - breaker opens and a spark is formed between the auxiliary contact 16 and the shield 5. The current then passes through both coils in series, or, according to a modification, in parallel, producing a strong blow-out field between pole-pieces S which blows the arc around 'the shield. A second spark which may form between the shield 5 and the fixed contact 13 is blown out along an arc-shoot 15.
Patent GB-105153-A (GB)
Title: Improvements in and relating to Motor Power Plant for Ship Propulsion.
IPC: B63H23/24
Filed: 1916-06-03
Abstract: 105,153. British Thomson-Houston Co., (General Electric Co.). June 3, 1916. Motor power plant; driving and transmission mechanism, special applications of.-R elates s to marine turbine installations such as are described in Specification 7829/07. For high speeds, the propeller 7 is driven through reduction gearing 8 by a main turbine 5, and for low speeds, a cruising-turbine 9 is connected in series with, and operates at a higher speed than, the turbine 5, the two turbines being operatively connected by an electro-magnetic device comprising a polyphase induction machine A and a polyphase synchronous machine B. The field magnet 20 of the machine A is keyed to the shaft of the turbine 9 while the armature core 22 is mounted on the shaft of the turbine 5, which carries also the armature core 23 of the synchronous machine B, the field magnet 24 being stationary. A switch 27 controls the excitation of the synchronous machine, and the armature windings 28, 29 are connected by conductors 30 in the shaft, the electric connexions being such as to produce opposite directions of phase-rotation. Where the cruising- turbine runs at twice the speed of the main turbine, half the power of the cruising-turbine is converted into electricaL energy by the induction generator A, and is delivered to the shaft of the main turbine by the synchronous motor B, while the other half is delivered direct to the mainturbine shaft through the torque of the generator A. The steam supply to the turbines may he controlled by a valve 40 connected to a speed governor on the turbine 5 and to a suitable speedcontrol lever, as described in Specification 3026/13. A valve 41 in the admission pipe of the turbine 9 may be connected to a speed governor on this turbine, as described in Specification 3027/13. In a modification, the machine B is arranged between the gearing 8 and the turbine 5.
Patent GB-568185-A (GB)
Title: Improvements in electrical timing arrangements
IPC: H03K17/288
Filed: 1943-05-18
Abstract: 568,185. Control systems for consumption apparatus. PHILIPS LAMPS, Ltd., and NEMET. A. May 18, 1943, No. 7913. [Class 38 (iv)] [Also in Group XL] Thermionic control.-To determine accurately short -period applications of current, for example in X-ray work or arc-welding, two grid-controlled gas discharge valves V1, V2 in a full-wave rectifier system have their grids connected in a common circuit to which starting and stopping potentials are applied. The starting potential comprises a negative hold-off bias, from a condenser C4, which delays exponentially when a starting switch S is opened, and a unidirectional negative ripple, from a phase-shifting network and rectifier Q, which is superposed upon it to produce a definite instant of ignition. When the first valve strikes, grid current produces a positive grid potential due to a resistance R5 between the grids and the condenser C4 which renders the condenser potential ineffective. The rectified current energizes a relay RE which opens the charging circuit of a timing condenser C1 and permits the condenser to discharge through a resistance R1 so that if a valve V3, in the grid circuit of which it is connected, eventually strikes and applies a negative potential to the grids of the rectifiers V1, V2, causing the relay to open and restore the original conditions. The switch S may be reclosed when the relay energized, since the potential of condenser C4 is ineffective while the rectifiers are conducting. The relay is shown controlling a load circuit M.
Patent GB-720037-A (GB)
Title: Epicyclic change-speed gear
IPC: F16H3/66
Filed: 1952-03-27
Abstract: 720,037. Epicyclic change-speed gearing. RAVIGNEAUX, P. March 27, 1952 [March 31, 1951; March 11, 1952], No. 7929/52. Class 80 (2). Epicyclic change-speed gearing comprises two suns C, M, two bell-shaped annuli B, R of which R is mounted within B, and a carrier A with planets b, m engaging B, M and inter-engaged with stepped planets c, r engaging C, R, the members A, B, C being selectively braked at A', B', C' to give three forward speeds with M connected to driving shaft Mo and R connected to driven shaft Ro. In the form shown, in Fig. 1, planets b, m are also stepped; and direct drive is obtained by a clutch E between A and C, while reverse is obtained by moving a claw clutch member h to disconnect R from Ro and connect B to Ro, A being braked. In the form shown in Fig. 3A, R is permanently connected to Ro while M and C are selectively clutched to Mo at M' and E' for forward and reverse respectively, the two clutches M', E' being engaged simultaneously for direct drive. In this form, the clutches and brakes are electromagnetic. Specifications 471,394 and 697,911 are referred to.
Patent GB-199149-A (GB)
Title: Improvements in sparking plugs for internal combustion engines
IPC: H01T13/14
Filed: 1922-03-18
Abstract: 199,149. Gray, M. A. March 18, 1922. Sparking-plugs. - The insulator is mounted within a sleeve b which may be partly unscrewed from the casing a, thus putting the cylinder into communication with the atmosphere by way of radial openings in sleeve b and an annular passage i between the central electrode and insulator. A cup d for holding liquid 'fuel is secured to the casing a.
Patent GB-912055-A (GB)
Title: Hypodermic needle packages
IPC: B65D75/36
Filed: 1961-03-06
Abstract: 912,055. Hypodermic needle packages. AMERICAN CYANAMID CO. March 6, 1961 [March 7, 1960], No. 8022/61. Class 94(1). A hypodermic needle package for storing one or more hypodermic needles sterilely comprises a blistered sheet 12 of transparent synthetic plastic heat sealable material having one or more thinned blisters 13, conforming to the shape of the hypodermic needle, and made by clamping a sheet over a heated mould, which is evacuated to draw the blisters to shape and a flat sheet 11 of heat sealable material sealed to the blistered sheet to form seals 17, 18, 19, In forming the longitudinal seals a wire may be placed between the sheets so as to form a separation line 20 for separation of packages without destruction of individual sterile seals. Separate packages may be formed. For opening, the blister top 16 ,has a tear ridge 14, which is broken as the sheets are bent just under the needle hub 23 exposing the sterile hypodermic needle for engagement with a hypodermic syringe. The sterilization is accomplished on complete formation of the packages by slow evacuation of air trapped inside the package and admission under pressure of ethylene oxide used as a 10-20% concentration in an inert gas and the sterilizing gas is then expelled, a reduction of pressure, by diffuison or by flushing with an inert gas and then air. To protect the packages against internal stresses each blister is reinforced by a protective seal 21. The packages may be formed from cellulose accetate, butyrate or propionate sheets or polystyrene or any other heat sealable material which is susceptible to deep drawing and is permeable to a sterilizing gas.
Patent GB-853105-A (GB)
Title: Improvements in, or relating to, nose-piece operated flow control valves for cattle drinking bowls
Inventor: GROOM HENRY
IPC: F16K21/04
Filed: 1956-03-15
Abstract: 853,105. Animal drinking appliances. FISHER FOUNDRIES Ltd. Oct. 29, 1956 [March 15, 1956], No. 8099/56. Class 5(2). [Also in Group XXIX] In a hinged nose-piece controlled spring- loaded plunger-operated water valve for a cattle drinking bowl, the plunger 15 projects from one end from an axially bored cylindrical casing 9 having a segmental shaped transverse water outlet slot 21 cutting into the bore and an internal annular valve seating 17a. The casing 9 is secured by a flange 10 and screwed sleeve 12 in a pipe union 6 which is secured in an opening 13 of the back wall 2 of the drinking bowl which carries the hinged nose plate, by a nut 14. The slot is inclined to the axis of the casing so that when the nose plate opens the resilient valve 18a, water is directed away from the back wall of the bowl.
Patent GB-438486-A (GB)
Title: Ergot preparation and process of obtaining it
IPC: A61K36/066
Filed: 1935-03-15
Abstract: <PICT:0438486/IV/1> The alkaloids of ergot are extracted with dry liquid sulphur dioxide at low temperature and, if desired, under pressure. Ground ergot, preferably first defatted with petroleum ether, is placed in a thimble 13 in the Soxhlet extractor 11 and liquid sulphur dioxide from the container 12 is continuously circulated through the ergot, the escaping vapour being condensed in the tube 10 which is surrounded by a double-walled vacuum jacket 20 containing liquid ammonia.  The original sulphur dioxide is admitted in vapour form through valve 22.  After returning the sulphur dioxide to volatilize from the product in the container 12, a brown powder is obtained which may be further purified by extraction with ligroin. For administration, it may be dissolved in alcohol-water or glycol-water which is slightly acidulated with hydrochloric, sulphuric, tartaric, lactic or acetic acid; a solution in 40 per cent alcohol containing 0,5 per cent tartaric acid is mentioned.
Patent GB-1243973-A (GB)
Title: Improvements in or relating to glass fibres and compositions containing glass fibres
Inventor: MAJUMDAR AMALENDU JYOTI
IPC: C03C13/00
Filed: 1967-08-04
Abstract: 1,243,973. Glass fibre composition. NATIONAL RESEARCH DEVELOPMENT CORP. 31 July, 1968 [4 Aug., 1967], No. 8143/71. Divided out of 1,243,972: Heading C1M. An alkali-resistant glass fibre is made from glass containing by weight: SiO 2 , 65-80%; ZrO 2 , 10-20%; and a network modifier N, 10-20%. N is an oxide of an alkali metal, an alkaline earth metal, or Zn. The alkali-resistance is that specified in Specification 1,200,732. Also present may be minor proportions of other oxides, e.g. A1 2 .0 3  or La 2 O 3 . N and these oxides may act as fluxing agents; or #10% of another fluxing agent may be present. N may be Na 2 O + Li 2 O. The glass may be fiberized at 1450-1500‹ C. The fibres may be used for reinforcing Portland cement concrete. The fibres may also be used to reinforce thermosetting resins. .
Patent GB-617867-A (GB)
Title: Light motor-vehicle construction
IPC: B62K5/01
Filed: 1944-05-02
Abstract: 617,867. Light motor vehicles. STANDARD MOTOR CO., Ltd., BLACK, SIR J. P., TURNER, W. R., and PHILLIPS, W. N. G. May 2, 1944, No. 8225. [Classes 79 (iii), 79 (iv) and 136 (iii)] [Also in Group XXXII] The chassis-frame of a motor vehicle includes a pair of longitudinals disposed relatively near one another and supporting transverse and other frame members which support saddle-like seats for four adults in pairs abreast with the two rear seats close behind the front so that the rear passengers ride pillion fashion. The chassis-frame is built up from tubes on a member 12 which is U-shaped in plan and carries the power unit 11 at its front end. A transverse member 14 depending by brackets from approximately midway along the member 12 provides foot-rests for the driver and front passenger. Members 17 attached to the transverse member 14 incline upwards rearwardly and carry the front saddles 21 and terminate in horizontal portions 18 which carry the rear saddles 22 which are at a higher level than the front saddles. Foot-rests for the rear passengers are formed by a transverse member 25 depending from the upwardly inclined members 17. Hand-rests for the rear passengers are provided by a further transverse member 19 and by a cross-support (not shown) for the front passenger. The rear axle 30 may be of the solid type and is underslung by fore-and-aft laminated springs, each of which is connected to the chassis-frame at its forward end, and at its rearward end to a common V-shaped balance lever 33 flexibly connected centrally to a transverse frame member 13. The front wheel springing may be as described in Specification 617,866, [Group XXXII]. A front wheel drive may be employed as described in Specification 617,865. Handles 38, 39 may be used to lift the vehicle over rough country. A tubular framework 35 may support a cover 36 for the power unit. A suitable wheel-base is stated to be 4 feet with a front track of 3 feet and a rear track of 2� feet. Wings and mudguards are mounted over the front and rear wheels respectively. Specification 16010/96, [Class 79], which relates to a fire engine, formed by securing two tandem bicycles sido-by-side with an engine supported between them, is referred to.
Patent GB-512696-A (GB)
Title: Improvements in connection with the erection of concrete or like partition walls
IPC: E04B2/82
Filed: 1938-03-17
Abstract: 512,696. Partitions. ELGOOD, E. J. March 17, 1938, No. 8236. [Class 20 (iv)] A partition wall consisting of concrete either in pre-formed blocks or cast in situ is supported at its ends in a chase or recess A which ds disposed as a separate unit on the adjacent Wall or other structural part D of the building, the partition wall being so mounted in the chase or recess A as to be movable relatively thereto to allow for contraction of the partition wall during drying thereof. The chases A. which may be of metal, are of channel shape and preferably have their sides slightly tapered. A lining a<2> of felt or other sound-absorbing material may be provided in the chase, and similar material may be interposed between the chase and the structural part D. When the partition wall is cast in situ, provision is made to prevent the concrete adhering to the chase. Apertures may be made in the sides of the chase to provide a key for a plaster covering b<1>.
Patent GB-896822-A (GB)
Title: Improvements in or relating to the polymerisation of olefins
IPC: C07C2/30
Filed: 1960-03-09
Abstract: Liquid polymers of mono-olefins are made by polymerizing an olefin under elevated pressure and temperature in the presence of a catalyst consisting of an aluminium dialkyl halide, and in the absence of any other material which promotes or modifies the polymerization of the olefin.  The olefin may be ethylene, propylene, isobutene, butene-1, or butene-2.  The preferred catalysts are aluminium diethyl chloride and bromide.  The preferred polymerization conditions are a pressure of 400-3,000 lbs./sq. inch and a temperature of 150 DEG -350 DEG C. The polymerization may be effected batchwise or continuously.ALSO:Dimers and low molecular weight liquid polymers of mono-olefins are made by polymerizing an olefin at a pressure of 400-3,000 lbs./sq. inch and a temperature of 150 DEG C.-350 DEG C., in the presence of a catalyst consisting of an aluminium dialkyl halide. p  Specified olefins are ethylene, propylene, isobutene, butene-1, or butene-2.  In Example 1, ethylene at a pressure of 780 to 2,000 lbs./sq. inch and a temperature of 270 DEG C. is polymerized in the presence of diethyl aluminium bromide, after two hours the liquid product was isolated and separated into fractions by distillation, in Example 2, propylene was polymerized in the presence of diethyl aluminium chloride at a temperature of 290 DEG C. and a pressure between 900 and 1,100 lbs./sq. inch for 7 hours, and the recovered liquid polymer fractionated.  The fraction boiling over the range 58 DEG C.-80 DEG C. was found to contain about 80% by weight of 2-methyl-pentene-1.
Patent GB-721478-A (GB)
Title: Improvements relating to the shaping of metal articles
Inventor: TURNBULL JOHN STRATTON
IPC: B21K3/04
Filed: 1952-04-01
Abstract: 721,478. Making turbine blades. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 5, 1953,[April 1, 1952], No. 8294/62. Classes 83 (2) and 83 (4). Stamping.-A method of forging a turbine or compressor blade casting to produce accurate shaping of a face thereof to a predetermined form consists in forcing said face against a die surface by the application of pressure at the opposite face of said blade casting through the intermediary of a loose pad of material deformable under pressure and without application of heat so as to ensure uniform pressure distribution on the blade casting to transfer errors from said face in contact with the die surface to the opposite face. The press tool comprises dies 1 and 2 mounted on plates 11 and 21 respectively located by pillars 3 over which slide bushes 3<SP>1</SP> in the plate 2<SP>1</SP> when the plate 21 is depressed. Springs 4 keep the dies apart when no pressure is being exerted. The bottom die 1 has an accurate convex face 5 corresponding to the accurate shape desired for the concave face 6 of the cast turbine or compressor blade 7 which is accurately located in the die by means of pins 14 and a spring-loaded plunger 10 located in semi-cylindrical grooves on each die. In operation, a turbine or compressor blade of high tensile steel is heated to say 650‹ C. and positioned in the bottom die of the press tool. A pad of asbestos covered by graphite and white spirit as lubricant is placed over the blade and the press operated at a pressure of 50 tons per square inch, whereby the under face of the blade is caused accurately to conform to the shape of the bottom die. All errors are now contained in the upper face of the blade and these are later removed by polishing or grinding. Turbine blades of austentic steel can be pressed to accurate shape when cold, using rubber as the deformable material for the pad.
Patent GB-898439-A (GB)
Title: Improvements in or relating to the fabrication of flexible, collapsible containers
Inventor: HALL HENRY WARBURTON
IPC: B65D90/08
Filed: 1958-03-14
Abstract: 898,439. Seaming non-metallic sheet maerial ; coated fabrics. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 5, 1959 [March 14, 1958], No. 8335/58. Classes 42 (1) and 140. [Also in Group XXIX] A method of proofing and joining fabric comprises applying proofing material to the fabric so that it does not adhere to one or more marginal portions thereof, whereby the proofing can be folded back to expose the fabrics, joining the fabric at said margin or margins in a lap joint and then sealing the proofing over the joint, the proofing being cut back so as not to overlap. In the embodiment shown the fabric 1 is a heavy nylon fabric coated on one side with neoprene polymer proofing 2 andonthe other side with an acrylonitrile polymer 3. The proofings are applied in such a way that they do not adhere to the fabric along marginal areas 4. This may be achieved either by inserting an inert filing between the fabric and the proofing material or by omitting the anchor coat in these areas. The joint is made by sticking and/or stitching the unproofed portions 4 of the fabric together, cutting back the flaps 5 so that they do not overlap and sticking them down on the fabric. Cover strips 9 and 11 of the respective proofing materials may then be secured over the joints.
Patent GB-309991-A (GB)
Title: Improvements relating to photographic roll films or pack films
IPC: G03C3/02
Filed: 1929-03-14
Abstract: 309,991. I. G. Farbenindustrie Akt.- Ges. April 19, 1928, [Convention date]. Roll spools; film packs.-In fixing paper strips or tabs to roll or pack films, the edge of the paper attached to the emulsion layer is a non-straight line. By this means the union. between the film and paper is given a greater resistance to bending and liability of the emulsion layer to crack along the paper edge when winding the film is diminished.