baber/WOPTO huggingface dataset:
Patent GB-628750-A (GB)
Title: Process for the manufacture of pre-stressed concrete articles, particularly railway sleepers and articles thus obtained
IPC: E01B3/34
Filed: 1946-10-10
Abstract: 628,750. Moulding reinforced concrete articles. FREYSSINET, E. Oct. 10, 1946, No. 30264. Convention date, Feb. 12. [Class 87 (ii)] [Also in Groups X and XXX] Within the rounded end portions of reinforcements in the form of elongated rings or hoops are placed tension-resisting members, the reinforcements with the members being then placed within a mould and the members being secured to terminal parts of the mould. The terminal parts are then separated, whereby the reinforcement is tensioned, the resultant gap in the mould is closed, and the mould is filled with concrete. Reinforcing wire 15 is wound around concrete blocks 11 which are temporarily mounted at the ends of an expansible rod 13, the rod being rotated about its centre 14 to effect this winding. The ends of the wire are secured to each other, and ligatures 17 are applied to flatten the straight parts of the reinforcement. The assembly of reinforcement, blocks and rod is then placed within a mould, the blocks are anchored to the ends of the mould, the rod is taken out, the ends of the mould are forced apart by means of wedges to tension the reinforcement, and the mould is filled with concrete, the blocks 11 and the tensioned reinforcement being embedded in the cast concrete article. Figs. 6 to 8 show part of a mould for making two railway sleepers simultaneously, this mould comprising sides 18, partition 19, top and bottom 25 and ends 29. The sides 18 are divided longitudinally into halves, and in operation these halves are forced apart by driving wedges 22 between them. The partition 19 (on either side of which a sleeper is cast) is secured to the sides by bolts 21. When the wedges 22 are driven in, this partition also must expand ; accordingly, it is made in several parts, and the gaps left by the expansion are filled with wedges 24. The sides, top and bottom have stiffening ribs 26, 27. Each end comprises an H-shaped member 28 co-operating with members 29 secured within a cylinder 32-by wedges 34, 35. The members 28 and 29 have projections 30 on which rest the bearing surfaces 31 of the blocks 11. Over each end is fitted a cone 40 of sheet metal, the two cones being joined by clamps. Cores 38, for making holes in the sleepers for rail attachments, are secured to the top and bottom of the mould by keys 39. Fig. 10 shows an arrangement for casting the sleepers, comprising a rail 41 on which run carriages 42 which carry the moulds by means of cables 44. At A, B and C the mould is assembled and at D the base of the mould is secured to a vibrator 47 whilst concrete is fed into the mould from a hopper 48 via funnel 49. Later the concrete is cured, the moulds open and the sleepers removed. Removal of the sleepers may be facilitated by polishing the surfaces 18a of the sides and by tensioning the partition 19, this tensioning then resulting in automatic ejection of the sleepers. Specifications 338,934, [Class 87 (ii)], 393,606 and 393,576 are referred to.
Patent GB-1108574-A (GB)
Title: Improvements in or relating to spring clips
Inventor: ANTHONY GLEN
IPC: B65G39/10
Filed: 1965-05-18
Abstract: 1,108,574. Roller conveyers. MATHER & PLATT Ltd. 9 May, 1966 [18 May, 1965], No. 30294/67. Divided out of 1,108,573. Heading B8A. [Also in Division E2] The description is the same as that of Specification 1,108,573, but the claims differ.
Patent GB-485363-A (GB)
Title: Improvements in laminated wood structures
IPC: B27M1/02
Filed: 1937-11-05
Abstract: 485,363. Laminated bars. SCHMEING, A., and SCHMEING, E., (trading as DEUTSCHE HOLZVEREDELUNG INH. A. & E. SCHMEING, [Firm of]). Nov. 5, 1937, No. 30369. Convention date, Nov. 11, 1936. [Class 145 (ii)] A laminated wood structure for use in machines &c. is composed of alternate layers of compressed and uncompressed wood. A core 1 consisting of one or more layers of uncompressed wood may be combined with outer layers 2 of compressed wood. The inner surfaces of the outer layers may be formed with pointed ribs which bite into the soft wood when the parts are glued and united under pressure.
Patent GB-1527689-A (GB)
Title: Steam steriliser and cooker
IPC: A61L2/07
Filed: 1977-07-20
Abstract: 1527689 Steam cooking apparatus D JOVANOVIC 20 July 1977 [21 July 1976] 30379/77 Heading A4D [Also in Division A5] A steam sterilizer or cooker comprises an openended cylindrical casing 2 having a peripheral seal 4 around each end, and a displaceable trolley 14 for conveying articles to be cooked or sterilized in and out of said casing, said trolley comprising longitudinally extending bars connecting together first and second closure discs 22 disposed outside the casing and a third closure disc 20 disposed within the casing such that when said third closure disc is in contact with the inner part of one of said peripheral seals, one of said discs 22 is in contact with the outer part of the other of said seals, thereby closing the casing. As shown in Fig. 2, each peripheral seal 4 has two projecting lips 6 and 7 on the inside and outside respectively defining contact zones of different diameters D and d. The two bottom bars of the trolley are connected by a removable cradle 24 which supports a container 25. In a modification, Fig. 7 (not shown), only one end closure disc 22 is provided.
Patent GB-842224-A (GB)
Title: Tumble finishing process and tumbling pellets therefor
IPC: C23F1/00
Filed: 1957-09-27
Abstract: Barrell finishing of articles comprises tumbling the articles with pellets of a ceramic abradant dispersed in a metal matrix and then treating the articles in a bath of a liquid that dissolves the matrix at a predetermined rate but does not appreciably dissolve the ceramic ingredient, so as to facilitate removal of pellets which have become lodged in the articles, by reduction of their size.  The ceramic may be alumina, silica, kyanite, mullite or silicon carbide and the matrix metal copper, lead, iron, aluminium or alloys thereof.  The pellets may be formed by compressing at 80000-100000 lbs./sq. inch and then sintering in a reducing atmosphere at 1800 DEG F.  The liquid bath may contain sulphuric acid, nitric acid, chromic acid, hydrochloric acid, hydrofluoric acid, oxalic acid, or a base.  The liquid bath treatment may also be used to treat the surface of the articles, e.g. by anodizing of aluminium articles.  Stainless steel articles may be dipped in nitric acid to assist in removing pellets and to improve the corrosion resistance of the articles.  Magnesium articles may be dipped in hydrofluoric acid solution and then in a boiling aqueous solution of sodium dichromate.
Patent GB-837833-A (GB)
Title: Overspeed control system for turbines
IPC: G05D13/00
Filed: 1957-09-27
Abstract: 837,833. Turbines. GARRETT CORPORATION. Sept. 27, 1957 [Sept. 28, 1956], No. 30417/57. Class 110 (3). [Also in Group XXIX] In a turbine overspeed control system, having means controlling the supply of working fluid to the turbine and controlled by a centrifugally operated valve carried by the turbine shaft which vents a conduit to modify a control fluid pressure therein, this centrifugally operated valve is mounted within a hollow part of the turbine shaft and comprises a valve seat coaxial with the shaft, a valve disc movable along the axis of the shaft to engage the seat, and flyweights which under centrifugal action tend to move the valve disc away from the valve seat. The hollow part of the turbine shaft may comprise a counterbore at one end thereof adapted to receive a power take-off, e.g. a quill shaft, removal of this quill shaft giving access to the centrifugal valve. As shown, a shaft 18 carrying a turbine rotor 10 drives a reduction gear train through a removable splined quill shaft 28 fitted into a counterbore of the turbine shaft. The turbine is supplied with working fluid (a) through a shut-off valve 16 which is electrically actuated by a fluid-pressure responsive switch 42, and (b) through variable-area nozzles 14 actuated by a fluid-pressure actuator 44, this switch and actuator both being connected to a compressed-air control conduit 38 which is pressurized through a regulator 46 and a restriction 50. The control conduit is connected to a pneumatic speed sensing governor 34, driven by the gear train, which governs the speed of the turbine during normal running (see Specification 760,656). The control conduit is also connected through a stationary seal 40 (Fig. 2) in co-operation with a rotatable part on the turbine shaft, to one side of a poppet control valve 36 coaxially mounted in the counterbore of the shaft and having operating flyweights 70 arranged to open this valve against an adjustable spring 60 to vent the control conduit to atmosphere through vent holes 43. Normal governing of the turbine takes place by partial venting of the control conduit by the pneumatic governor 34, which operates on the nozzles 14 through the actuator 44. On excessive overspeed, e.g. owing to breakage of the quill shaft, full venting through the centrifugally operated valve 36 operates to close both the shut-off valve 16 and the nozzles 14.
Patent GB-1074272-A (GB)
Title: Method of building construction
IPC: E04B1/35
Filed: 1965-07-19
Abstract: 1,074.272. Erecting buildings. INTERNATIONAL LIFT SLAB CORPORATION. July 19, 1965 [Feb. 23, 1965], No. 30506/65. Heading E1A. A building is erected by casting a ground floor slab 10 and one or more other slabs 13-15 round columns 11, up which the slabs are moved by jacks and fixed in succession in their final position, the top slab carrying shuttering 20, 23 to form a lift shaft as the slabs are raised. The outer shuttering 20 for the lift shaft is of concrete and cast with the slab 15 which eventually forms the roof. The inner shuttering 23 is suspended from beams 22 resting on the shuttering 20. Further column sections are welded on as required.
Patent GB-210744-A (GB)
Title: Improvements in and relating to methods of and apparatus for regulating electric distribution systems
IPC: H05G1/30
Filed: 1923-12-04
Abstract: 210,744. British Thomson-Houston Co., Ltd., (Assignees of Coolidge, W. D.). Jan. 30, 1923, [Convention date]. R÷ntgen-ray and like apparatus.-By means of an electronic discharge, a substantially constant potential is maintained across an X-ray tube 1, Fig. 1, even though the voltage across the supply conductors 7, 8 varies; on a substantially constant current is maintained in the cathode of an X-ray tube 40, Fig. 3, and also through the anode thereof, even though the voltage across the supply 34 varies. In the apparatus shown in Fig. 1, the supply current passes through an impedance 13 and is then shunted through a transformer 17 to the cathode 9 and also through a transformer 4, and synchronously driven rectifier 5 to the terminals of the tube 1. An increase of supply voltage produces a corresponding increase in cathode current, and thereupon a magnified increase in the anode current through the tube, which is operating at saturation current, thereby increasing the potential drop across the impedance 13 to such an extent that the potential across the primary of the transformer 4 only rises very slightly. If a second impedance is inserted between the transformer 4 and the junction of the leads 8, 18, then the potential across the transformer can be maintained constant or even caused to drop when the supply voltage increases. The X-ray tube may be constructed to rectify its own current, whereupon the rectifier 5 can be omitted.. In the apparatus shown in Fig. 3, the tube 1 is replaced by an electron discharge device 32 operating with a low voltage drop, though still at saturation value, and the constant potential difference across the primary of the transformer 4 is utilized to supply through a transformer 43 a constant heating current to the cathode of an X-ray tube 40, whereupon the electron current through the tube 40 due to the transformer 48 remains substantially constant. Both the electrodes of the tubes are preferably made of tungsten.
Patent GB-861193-A (GB)
Title: Electric heating device
Inventor: PORCHER FREDERICK JAMES
IPC: H05B3/00
Filed: 1956-10-08
Abstract: 861,193. Electric heating. IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct. 2, 1957 [Oct. 8, 1956], No. 30590/56. Class 39 (3). [Also in Group XXII]. A method of producing an electrical heating device comprises forming a composite body by casting metal 9, e.g. copper, copper base alloy, aluminium or aluminium base alloy, around an elongated member of friable material 8, e.g. asbestos, and an elongated tubular member 5, e.g. an aluminium sleeve having an electrical conductor 6 embedded therein and separated therefrom by crushable insulation 7 such as magnesium silicate, magnesia, asbestos or glass fibre, rolling the composite body into sheet form, Fig. 2, and thereafter providing an elnarged passage 10 in place of the material 8 by the application of fluid pressure.
Patent GB-943863-A (GB)
Title: Improvements in and relating to visors
IPC: A42B3/22
Filed: 1961-08-24
Abstract: 943,863. Visors. M. D. S. LUX. June 18, 1962 [Aug. 24, 1961], No. 30597/61 Heading A3V. [Also in Division G2] A visor adapted to be used with a domed plain surfaced or marginally ribbed crash helmet or round the head comprises a face shield 10 Fig. 1 of acrylic plastic pivotally mounted by a screw 18 and lock nut 19 at opposite ends of an arcuate brow bar 12 of double channel cross-section having attached through apertures 23 an elastic head strap 13 Fig. 2. Channel 15 accommodates a rubber strip 16 of slightly shorter length than the brow bar constituting a friction pad which engages the helmet or head when the head strap 13 is tightened. Channel 17 constitutes a recess which engages any marginal ribs provided on the helmet. The lower channel of the brow bar may be replaced by rib engaging clips and the visor may be provided with an antiglare portion. The rubber strip may be replaced by a plurality of rubber bands mounted on spaced brackets along the length of the brow bar.
Patent GB-817819-A (GB)
Title: Motor road vehicles constructed to facilitate loading and unloading
Inventor: GREEN MAURICE RAYMOND
IPC: B60P1/18
Filed: 1956-10-09
Abstract: 817,819. Vehicle bodies tipping to form ramps. IBBETT ENGINEERING CO. Ltd. Oct. 1, 1957 [Oct. 9, 1956], No. 30740/56. Class 78 (4). [Also in Group XXXII] The rear wheel suspension of a vehicle driven by its front wheels 12 can be lowered so that the body 26 of the vehicle forms a ramp. As illustrated, each rear wheel 21 is mounted on an arm 23 pivoted at 19 and raised and lowered through a spring connection 29 to a singleacting hydraulic ram 28. The suspension is held in its in-use position by a hook 35 engaging a catch 27 and carried by an arm 36 biased into engaging position by a spring 40 movable out of this position by single-acting hydraulic ram 56. The rams are supplied from a pump driven by an electric motor operated from the vehicle battery and are controlled by a combined switch and valve 46. The rear of the body may be fitted with a ground engaging shoe and may carry a ramp board 72 held in its stowed position by bolts 70. Specification 698,811, [Group XXXII], is referred to.
Patent GB-733703-A (GB)
Title: Electrode arrangements for condensers and ionisation chambers
Inventor: SALMON PERCY GEORGE
IPC: H01J47/12
Filed: 1952-12-04
Abstract: 733,703. Capacitors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 4, 1953 [Dec. 4, 1952], No. 30748/52. Class 37. [Also in Group XL (a)] An arrangement suitable for use as an airspaced or vacuum R.F. condenser comprises a metal tube 1 recessed at one end to receive an insulating tube 2 retained by a metal cap 3. The tube 2 has an internal two-start thread into which are screwed two electrodes 4 and 5 in the form of helical metal fins. Connecting leads 6 and 7 are spot-welded directly to the respective electrodes, the lead 7 being connected to the cap 3 and the lead 6 being taken through a glass-to-metal seal at the remote end (not shown) of the metal tube 1. Alternatively contact with the electrodes may be made via metal linings in the threads in the insulator. To provide an arrangement for differential operation one of the electrodes may be divided into two halves which are screwed into the tube 2 from opposite ends.
Patent GB-534247-A (GB)
Title: Improvements in and relating to lighter-than-air craft
IPC: B64B1/40
Filed: 1939-11-25
Abstract: 534,247. Aerostats. R.F.D. CO., Ltd., and WILLIAMS, P. W. L. Nov. 25, 1939, No. 30807. [Class 4] Lighter-than-air craft are provided with means for the easy removal or attachment of auxiliary surfaces, such as fins, rudders, and stabilizers, to the main envelope. The joining edges of the main envelope of a kite-balloon and the subsidiary envelope 5 of a stabilizer fin are provided with flange-like borders 41, 51 respectively, the flanges having spaced eyelets for the reception of lacing 6 to secure the parts together. The eyelets and lacing may be replaced by a zip fastener. The auxiliary member 5 is an independent unit and is .closed on its normally open side by a fabric or other flexible diaphragm, an extension of which or an extension of the envelope or both constitutes the flange 51.
Patent GB-965227-A (GB)
Title: Luminescent apparatus for determining ionising radiation dosages
IPC: G01T1/11
Filed: 1960-09-07
Abstract: <PICT:0965227/C4-C5/1> Device for use in determining ionization radiation, e.g. X or g  radiations, dosages based upon the measurement of the luminous energy liberated in the heating of a thermoluminescent substance previously irradiated by the radiations to be measured, comprises a nickel tube 2 coated by vitrefiable enamel with a layer of a thermoluminescent substance, e.g. calcium fluoride, and containing an electrical conductor 3 connected by conductors 4, 5 and pins 7, 8 on the base of a glass envelope 1 to a supply circuit.  The envelope 1 is provided with an opaque plastic casing 11 having a removable cover 12.  The casing 11 can be provided on its inside or outside surface or within its material with a layer 13 for absorbing radiation, e.g. of lead of thickness between 0.5 and 1 mm., preferably 0.7 mm. This layer absorbs radiation of energy lower than about 0.5 MeV so that a substantially linear response of the device is obtained.  The removable cover 12 can also be provided with such a layer.  A thermocouple can be disposed within the envelope close to the thermoluminescent coating.  The envelope 1 can be provided with a metallic reflector.  In order to measure the light energy stored in the thermoluminescent material under the action of ionizing radiations the cover 12 is removed from the casing 11 and the envelope 1 removed and rapidly introduced into a light measuring instrument.
Patent GB-697243-A (GB)
Title: Vehicle wind-screen wipers
Inventor: HASTIE ADAM LEISK
IPC: B60S1/10
Filed: 1950-12-19
Abstract: 697,243. Pneumatic motors; engine valve gear. LUCAS (INDUSTRIES), Ltd., J. Jan. 24, 1952 [Dec. 19, 1950], No. 30868/50. Classes 110(ii), 122(ii) and 122(iii) In a valve mechanism for an air operated windscreen wiper having an oscillating or reciprocating distributing valve automatically actuated in response to the motor piston or diaphragm movements, a manually operable control (parking) valve h is interposed between the distributing valve q and a ported valve seat b: The parking valve h has on one side thereof a facing formed with an arcuate channel k whose ends lie centrally between three ports m, n, o which also pass through the valve h itself and, when the wiper is in operation, are respectively aligned with three ports c, d, e in the valve seat b the central port c being connected by a passage f to a source of suction, the other two d, e being in communication with opposite ends of the motor chamber. The distributing valve. q is actuated by a pin w carried by a rod t attached to the motor piston and rocks a tappet v operatively connected to one end of a link z surrounded by an overcentre spring 3, the other end of the link being connected to the distributing valve q which is formed with a channel s adapted to establish communication alternately between the ports m, n or m, o in valve h and consequently the ports c, d or c, e in seating b to operate the motor thereby. To-stop the motor and park the wiper the parking valve is moved manually by a cable p to one of its limiting positions as shown in Fig. 7 to move ports m, n, o and c, d, e out of alignment so that the distributing valve h is inoperative and at the same time connect ports c and e by the channel k and cause the piston to be moved to one end of its stroke and park the wiper.
Patent GB-932196-A (GB)
Title: Improvements in or relating to continuous casting installations
IPC: B22D11/128
Filed: 1961-08-28
Abstract: 932,196. Continuous casting-machines. CONCAST A.G. Aug. 28, 1961 [Sept. 24, 1960], No. 30909/61. Class 83 (1). A continuous casting machine comprises at least one pinch roll system with its driving device and adjusting devices mounted on a common frame forming a removable unit. In one embodiment, Figs. 4 and 5, the opposing rollers 9, 9a, 12, 12a are driven by spar gearing from a motor 4, the rollers 9, 9a being urged on to the casting 10 by resilient devices 17, 17a and the abutment rollers 12, 12a being fixed in position by devices 16, 16a. The rollers are cooled by internally circulating coolant, or by sprays 22, Fig. 7. In a modification, Fig. 11, the rollers are driven through worm gearing 29, 30. In another modification, Figs. 9 and 10, the rollers have cheeks confining the casting and adjustable by helical ramps or oppositelyhanded screw threads.
Patent GB-1408901-A (GB)
Title: Lighting unit
IPC: F21S8/02
Filed: 1972-07-03
Abstract: 1408901 Lighting units SOUTH WESTERN ELECTRICITY BOARD and M WOODROBINSON 2 July 1973 [3 July 1972] 30950/72 Heading F4R A lighting unit for installation in an "exposed T" type suspended ceiling comprises a lamp housing 10, a light-transmitting screen 14 at the bottom of the housing and a diffusely reflective continuous skirt 12 depending from the housing at the periphery of the screen and having an outward flare completely around the periphery of the screen. The flared skirt 12 may be square in plan and have inwardly convex, as shown, or straight sides so as to provide a gradually decreasing luminance away from the prismatic panel 14. The housing 10 and skirt 12 may be integrally formed of glass fibre reinforced resin material, and the lower periphery of the skirt 12 seats on the inverted T-section member 22 of the suspended ceiling. The panel 14 may be removable from below and may be centrally located by deflectable flaps 18 in slots at the bottom of the housing 10, stops 20 being provided to limit the inwards movement of the flaps.