baber/WOPTO huggingface dataset:
Patent GB-710183-A (GB)
Title: On-load changeover switch for tapped transformers
IPC: H01H9/00
Filed: 1951-03-22
Abstract: 710,183. Regulating switches. JANSEN, B. March 22, 1951, No. 6935/51. Class 38(5) An on-load transformer tap-changing switch comprises fixed contacts Ha, ha, hb, Hb, and movable contacts K1 ... K3 which are subject to a compound movement comprising a steady primary movement transmitted from a driving member An and a superimposed unsteady movement impressed by each closed contact on the remaining movable contacts by means of a guide L common to the movable contacts. The latter are mounted on a circle Ti having 12 teeth and arranged to roll round the inside of a circle Ta having 16 teeth and carrying the fixed contacts, of which ha and hb are connected by resistances Wa, Wb to contacts Ha, Hb, in turn connected to transformer tappings A, B. To change over contact K1 from contact Ha (Fig. 1A) to Hb (Fig. 1G), the driving member An is rotated clockwise about the axis M of circle Ta, thus causing circle Ti to roll clockwise around the circle Ta, the following switching sequence taking place. Contact K2 is brought into engagement with contact ha before K1 separates from Ha, contact K3 is brought into engagement with hb before K2 separates from ha and K1 engages Hb before K3 separates from hb. The contacts K1 ... K3 are interconnected by push rods L1 ... L3 and the guide member L and are radially slidable in the circle Ti, so that as .each contact in turn engages a fixed contact it is moved radially inwards, the interconnecting means causing simultaneous withdrawal of the other two movable contacts, this movement constituting the superimposed unsteady movement. The contacts are biased outwards by a spring F. In a modification, Fig. 2 (not shown), the guide L is a pin slidable in a slot in a radial driving member An, the spring F being arranged between the outer end of the member An and the pin L. In a further modification, Fig. 3, the contacts are arranged in two groups, one of .each group such as K1, K2, being closed at the same time. Each group has its own guide member Sa or Sb, these members being interconnected by the spring F.
Patent GB-131085-A (GB)
Title: Improvements in Machine Guns.
Inventor: CONSTANTINESCO GEORGE
IPC: F41A19/31
Filed: 1918-04-25
Abstract: 131,085. Constantinesco, G. April 25, 1918. Machine guns.- Relates to gas-operated guns of the Lewis type in which the breechblock e is actuated by a post d on the rack-rod a of the gas piston, in conjunction with a pinion c connected to a return spring, and in which the firing-pin h, instead of being fixed to the post d as usual, is siidably mounted thereon against a spring n and is controlled by a transversely sliding trigger l adapted to be moved by a plunger p controlled by an aircraft propeller for firing between the blades as described in Specifications 129,299 and 129,362. According to the invention, a tongue s is provided on the rack-rod so as to lie between the plunger p and a spring plunger u, which works the trigger l, when the breech is closed. This ensures firing even if the piston rebounds.
Patent GB-589216-A (GB)
Title: Improvements relating to constructional toys
IPC: A63H33/06
Filed: 1945-03-20
Abstract: 589,216. Constructional toys. HILL. L. E. March 20, 1945, No. 7002. [Class 132 (iii)] A toy constructional outfit comprises a set of toy bricks 1, and a set of two different types of toy rollers 5 and 6, and a set of rods 4, the bricks and one type of rollers 5 having circular holes of two different sizes, the smaller 2 being of a size to make a frictional fit with the rods and the larger 3 being of a size to make a loose fit so as to serve as a free axle mounting for the rods. The rollers 6 of the other type are shorter and have axially disposed holes similar to the holes 2 above. The bricks may be cubes of equal size and all the rollers may have diameters equal to the length of the cube sides. The larger holes may be located eccentrically in the bricks to enable the smaller rollers to serve as wheels, as at 6a in Fig. 5. The ends of the rods 4 may be split diametrically to facilitate their frictional fit in the smaller size holes 2, or may be tapered for the same purpose, the holes being then correspondingly tapered. The outfit may include a container 8 for packing, having holes in the sides for the reception of the rods 4 as freely rotating axles, as shown in Fig. 8. The container 8 may also be furnished witli a lid 7, Fig. 6, having holes 2 of the smaller size to make a frictional fit with the rods and serving as a base for construction, either in position on the container or independently as in Fig. 6. Among the examples of assemblies of the elements are the toy cannon shown in Fig. 5 and the toy windmill shown in Fig. 6.
Patent GB-495283-A (GB)
Title: Improvements in or relating to hydraulic motors
IPC: F16K31/122
Filed: 1938-03-07
Abstract: 495,283. Hydraulic machines ; liquidpressure engines. BROWN BROS. & CO., Ltd., and GRIEVE, J. A. W. March 7, 1938, No. 7027. [Class 69 (ii)] [Also in Group XXVI] A liquid-pressure motor, e.g. for operating a slide valve 16 of a steam, hydraulic pneumatic &c. engine, comprises a ram 1 having lost-motion connection at each end with pistons 2, 2a displaceable in either direction by pressure liquid.
Patent GB-525108-A (GB)
Title: Improvements in fasteners
IPC: F16B37/02
Filed: 1939-03-03
Abstract: 525,108. Nuts and bolts. PRESTOLE DEVICES, Inc. March 3, 1939, No. 7033. Convention date, Dec. 19, 1938. [Class 89 (i)] A nut 10, made by deforming a sheet metal plate and having a protuberance 11 with an aperture 12, the edge of which conforms to a single convolution of a helix, has a radial slot 13 between the low and high point of the helix, and the protuberance so varied in section as to provide an accurately circular hole. In Fig. 7 is shown the varying section at 16, 11, 18 corresponding to the lowest, mean, and highest part of the helix. At the lowest point there is an exterior concavity, which gradually decreases upwardly as indicated. The upper part 18 is virtually straight except near the hole where it gradually curves inwardly as shown to position the edge surface approximately parallel to the axis of the protuberance. This inward curving ceases at a point approximately three-quarters of the length down the helix.
Patent GB-258543-A (GB)
Title: Improvements in or relating to machines for forming tubular fabrics
IPC: D05B1/26
Filed: 1926-03-13
Abstract: 258,543. Gardner, P. Sept. 19, 1925, [Convention date]. Winding webs; collapsable rollers.-A tubular fabric is produced in a machine comprising means for sewing a seam to connect the edges of a strip of material, coating the edges with adhesive, flattening them against the material, and winding the material on a roller so that the seam is retained in the flattened out position while drying. The seamed fabric passes from the sewing and pasting device over an inclined roller 100 and a guide roller 107 to the winding roller 108 which is removably secured on a shaft by an eccentric friction lock 110. The shaft has projecting trunnions 111, 112, the trunnion 112 projecting beyond its bearing and having a friction clutch engagement with a worm-wheel 115 driven from a shaft 120 so as to allow slip as the diameter of the roll of wound fabric increases.
Patent GB-1208333-A (GB)
Title: Method of apparatus and mould for semicontinuously casting metal ingots
IPC: B22D11/053
Filed: 1968-02-13
Abstract: 1,208,333. Casting processes and apparatus; moulds; SUMITOMO KINZOKU KOGYO K.K. 13 Feb., 1968 [13 Feb., 1967], No. 7114/68. Heading B3F.  Metal ingots 14 are semi-continuously cast by pouring molten metal 1 into an open-ended,. thin-walled, water-cooled mould 5 on to a baseplate 9, axially reciprocating the mould on a table 12 while withdrawing the solidifying ingot on the base-plate down through the mould without directly water-cooling the ingot, stopping the axial reciprocation and the flow of metal and removing the ingot from the mould by lowering it on to a truck 8. Alternatively, the ingot is removed by raising the mould on hydraulic cylinders (not shown). Melt teeming from a tundish 3 (see Fig. 15) is effected through a ceramic crucible 72 which strains out slag impurities from the melt. The mould may also be pulsed laterally to prevent the ingot from bulging, in which case the lateral and axial vibrations are synchronized. Moulds.-In Figs. 11 and 15 the iron, steel or cast iron mould 5 is provided with a rigid upper part (coolant inlet 21 and header 22) and a deformable lower part (facing wall 23 welded to backing 28). The backing 28 and facing wall 23 define coolant passages 24 which are chromate or molybdate treated to reduce corrosion. The mould cavity walls have a chromium or molybdenum coating. Coolant is removed by a pipe 27 and a lateral pulsing device 13 is mounted mid-way along the mould walls.
Patent GB-164495-A (GB)
Title: Improvements in and relating to locomotive engines
IPC: F23L17/16
Filed: 1920-03-09
Abstract: 164,495. Wrench, J. M. D. March 9, 1920. Blast apparatus. - Apparatus for preventing the entry of air, smoke-box gases, or other foreign matter into the cylinders of a locomotive when the engine is drifting comprises a valve or shutter adapted to close the exhaust pipes when the regulator valve is shut. The valve 4 is arranged to close the ports from the exhaust pipes 3 to the blast pipe 2, and its stem is formed as a plunger 10 operating in a cylinder 11 open to the steam chest. The valve may be closed by gravity as shown, or a spring may be provided.
Patent GB-593760-A (GB)
Title: Improvements in and relating to electric discharge lamps
IPC: H01J61/32
Filed: 1945-03-21
Abstract: 593,760. Discharge lamps. GENERAL ELECTRIC CO., Ltd., BREADNER, R. L., JENKINS, H. G., and SIMMS, C. H. March 21, 1945, No. 7158. [Class 39 (i)] In an electric discharge lamp of the type comprising two vitreous, e.g. glass components 10, 11, Fig. 2, sealed together, at least one of which has one or more upstanding ridges 12 so as to define a discharge passage between them, and in which the upstanding ridge or the outermost of the ridges merges into an outer wall 16 forming a boundary of the discharge passage so that this wall is effectively of non-uniform width, the crests of the ridge or ridges and the outer wall 16 lie close to or abut the other component 11, but are not sealed thereto, and a flange 20 of substantially uniform width is provided on at least one of the components outside or beyond the outer wall 16 and is sealed to the other component 11 so as to form a vacuum-tight closure to the discharge passage. Both components may be ridged, Fig. 2, the ridges and hence the discharge passage being of spiral form, in which case both the components 10, 11 are provided with a flange 20, 21, the flanges being sealed together to form the vacuum-tight closure. The surfaces of the flanges 20, 21 are preferably of substantially the same width where they are sealed together. Tubulations 22, 23 are provided in which the' ..electrodes (not shown) are mounted on pins 24, 25. The inside of the walls of the spiral discharge passage may be coated with a fluorescent powder. An exhaust tube 26 is provided. Alternatively, only one component may be ridged, in which case the other component may be a flat disc and the flange is provided only on the ridged component, Fig. 4 (not shown). The discharge passage is again of spiral form. The flange may be sealed to the upper surface of the disc or may extend over the edge of the disc and be sealed to this edge. In another form, Fig. 5 (not shown), the lamp comprises a ridged inner component and a plain unridged outer cylindrical component so that the discharge passage is of helical shape. The outer component may alternatively be of frustoconical shape. The Provisional Specification refers to an embodiment similar to that shown in Fig. 2 in which the ridges of the two components are of spiral shape and merge into their respective outer walls after approximately a quarter of a turn, and to an embodiment in which only one component is ridged, the unridged component being of domed shape. It also states that the invention may be applied to lamps of multistart spiral and zig-zag form.
Patent GB-177375-A (GB)
Title: A new or improved stay or fastener for casement windows
IPC: E05C17/18
Filed: 1921-03-05
Abstract: 177,375. Parkes & Sons, Ltd., J., and Forrester, W. C. March 5, 1921. Stays.-A casement stay a is hinged to the frame and passes through a slotted sheet metal plate e on the window, the lower edge of the aperture in the member e having a projection f for engagement with one of a number of holes g in the stay-rod. When the window is closed, the pivot bracket member on the frame engages with the slot in the member e and the stay-rod is then turned parallel with the casement and engaged with a pin j on the frame to hold the casement in the closed position.
Patent GB-565550-A (GB)
Title: Improvements in connection with settling tanks employed in the purification of water
IPC: B01D35/00
Filed: 1943-05-07
Abstract: 565,550. Gravity-separation apparatus. CANDY, F. P., and GRIFFITHS, J. _ H. T. May 7, 1943, No. 7240. [Class 46] A water-purification settling tank has a sludge outlet opened under the control of means brought into operation when, by the accumulation of sludge, the top of the " sludge blanket " reaches a certain height ; this is effected by the decrease in fluidity of liquid drawn off from a small orifice at a certain height in the tank when the top of the sludge blanket reaches that level. The drawn-off liquid passes to a vessel having a small weephole " in the bottom, whereby this vessel remains full so long as clear water is being discharged from the orifice in the settling tank, but when the sludge blanket rises to the level of the orifice, the discharge therefrom is reduced and the vessel then empties, since the clear water flows out faster than the vessel is replenished by the blanket water; the vessel is attached to a counter-weighted lever which therefore swings over to cause the opening of the sludge outlet in the settling tank and also to effect through appropriate means a cleaning of the draw-off discharge orifice. The vessel has a protective screen for the small weephole, so that no deposit from the drawn'-off sludge blanket water reaches the weephole. Specification 524,858 is referred to.
Patent GB-823233-A (GB)
Title: Production of sorbic acid
IPC: C07C51/377
Filed: 1956-03-08
Abstract: Sorbic acid is produced by eliminating the elements of an alkanol from a 3,5-dialkoxyhexanoic acid, each molecule of the compound undergoing this dealcoholation forming two molecules of alkanol and a molecule of sorbic acid.  The dealcoholation is preferably effected by heating the said dialkoxy acid in the presence of a strong base, such as sodium, potassium, lithium, calcium or barium hydroxides, the alcohol produced being distilled off during or after the reaction. The 3,5-dialkoxyhexanoic acid may be obtained by hydrolysing 1,1,3,5-tetra-alkoxyhexane to produce a 3,5-dialkoxyhexanal, for example by reacting the tetraalkoxyhexane batchwise or continuously with water in the presence of an acid, followed by oxidation of the 3,5-dialkoxyhexanal, for example using air or other oxygen-containing gas in the presence of a multivalent metal, e.g. cobalt or manganese, or a compound of such a metal, and preferably in the presence of an oxidation resistant solvent, such as acetic or formic acid. Alternatively, the 1,1,3,5-tetraalkoxyhexane may be hydrolysed and oxidized simultaneously to produce the 3,5-dialkoxyhexanoic acid by passing an oxygen-containing gas through a solution of the tetra-alkoxyhexane in an oxidation-resistant solvent, e.g. acetic acid, containing a minor amount of water and an oxidation catalyst, such as a manganese or cobalt compound.  If desired, an oxidation promoter, such as acetaldehyde, may be added to the reaction mixture.
Patent GB-1024720-A (GB)
Title: Improvements in and relating to bed-settee
Inventor: CRAECKER GUY JOSEPH DE
IPC: A47C17/213
Filed: 1965-02-19
Abstract: 1,024,720. Bed-settees. SOC. GENERAL DE LITERIE. Feb. 19, 1965. No. 7299/65. Heading A4J. A foldable bed-settee mattress support comprises four pivotally inter-connected portions I. II, III and IV of which portions I and IV form the back rest and seat support of the settee respectively. The portions IV and III are connected to portions III and II, respectively, by pivot pins and by pairs of pivoted links 30, 31 and 22, 23, which links form a locking device in the folded and unfolded positions by links 30 and 22 bearing on one of the frame members 15, 19 or 27 of portions II, III and IV. An extension 35 of link 31 forms a leg for the bed. The portion III is braced by a U- shaped member 21, which forms a forwardly extending nose in the settee position upon which the ends of seat cushions C 3  and C 4  rest. These cushions together with back cushions C 1  and C 2  form the mattress. Bed clothes may be stored beneath the seat. The bed-settee may have fixed or removable arm rests D.
Patent GB-771473-A (GB)
Title: Pull tab structure for a reversible slider and method of making the same
IPC: A44B19/28
Filed: 1953-03-17
Abstract: 771,473. Sliding clasp fasteners. PILLING CHAIN CO. March 17, 1953 [March 18, 1952], No. 7316/53. Class 44. A slider for a sliding clasp fastener comprises in combination, a pair of hinged guide wings, an apertured male ear extending from the inner surface of one wing through a slot in the other wing, a pair of spaced female ears extending from the outer surface of the other wing on either side of the slot and receiving the male ear therebetween, each female ear having an opening therethrough substantially alignable with the male ear aperture, a V-shaped pull-tab having pins on the outer ends of its arms extending towards each other, engaged in such openings and extending into the aperture and abutment means in the aperture maintaining the pin ends out of engagement with each other. The slider comprises two wings 10, 20, Figs. 1, 2, the wing 10 including a-flat wall 11 from which. projects a triangular abutment 13, with an ear 15 projecting rearwardly and outwardly therefrom. Apertures 16, 17 are formed in ear 15, the outer edge of which is tapered at 18. The wing 20 has laterally-spaced ears 25, the parts 25a and 25b of which project downwardly and upwardly respectively from wing 20, the ears 25 being spaced to receive the ear 15. The parts 25a have parallel walls and the parts 25b have outer walls inclined to form cam surfaces 28. Outwardly projecting laterally-spaced ears 23 having U-shaped recesses 26, which align with the aperture 17 when the slider is assembled, are formed on the wing 20. Wings 10 and 20 are hinged together by a pin extending through ears 15 and parts 25a of ears 25. In assembly, the hole 17 in ear 15 is misaligned with the bights of slots 26 and dies 50, Fig. 5, are forced inwardly to displace metal from the ear 15, forming a lip 55. The pull tab 40 is then applied to the slider by spreading its arms 42 and engaging trunnion pins thereon over the surfaces 18 until they snap into engagement with the aperture 17 and their ends abut the lip 55. Specifications 669,177, 723,289 and 726,677 are referred to.
Patent GB-476283-A (GB)
Title: Improvements in percussion devices for the determination of the resistance of cementin building materials
IPC: G01N3/30
Filed: 1937-03-13
Abstract: 476,283. Testing physical qualities of materials. ZAMBONI, C. March 13, 1937, No. 7432. Convention date, March 13, 1936. [Class 106 (ii)] Cement pastes or conglomerates are tested during hardening by allowing a pendulum to swing against the specimens and measuring the height of rebound the pendulum being formed with a small fiat surface parallel to a plane containing the pendulum rod and its axis of rotation, and which at the end of the fall, coincides with a flat part of the specimen. A specimen 4 of cylindrical shape rests on rollers 2, 3 in a base 1 so that it may be turned to present a fresh surface at successive tests. During a test the specimen is lightly gripped between a screw 5 and abutment 6 on a support 7 for the pendulum which oscillates about a pivot 8. The pendulum comprises an arm 11 and a lens-shaped steel hammer 9 provided with a flat striking surface 12. It is held in the upper position by a spring pivoted detent 14 against a pin 17. A pawl 21 acted upon by a weal: spring 22 serves to give the mass 9- a slight push at the start. A pointer 25 rotating about the same pivot as the pendulum is frictionally held at the rebound thus retaining the indication on the scale to which the pendulum rebounds. The screw 5 is slacked and the specimen rotated to present a new zone for test and the latter repeated. The specimen may be of prismatic or other form and have a suitably shaped support.
Patent GB-424533-A (GB)
Title: Improvements in or relating to disintegrators for fluid-borne solids
Filed: 1934-03-09
Abstract: 424,533. Centrifugal pumps. HATHORN, DAVEY, & CO., Ltd., and LUPTON, H. R., Sun Foundry, Dewsbury Road, Leeds. March 9, 1934, No. 7484. [Class 110 (i)] A centrifugal pump for liquids, such as crude sewage, containing solids is provided with means to macerate the mixture at the inlet to and the outlet from the impeller. Helical vanes 5 on the conical impeller 1 have bent outlet ends co-operating with stationary blades 6<x> on a ring 6 which can be axially adjusted by means of bolts 7 and the ring 9. The blades 6<x> are inclined to give a scissor action in conjunction with the ends of the impeller blades. A stationary blade 11 is provided with its cutting edge in close proximity to the vanes 5 on the suction side of the pump. The blade is carried by a flanged support 12 and its position can be adjusted by screws 13.
Patent GB-1039933-A (GB)
Title: A method of coating a surface with a high-molecular weight organic material
IPC: B05D1/34
Filed: 1963-02-25
Abstract: Surfaces are coated with a high molecular weight organic material by applying simultaneously or one after the other (e.g. by spraying, curtain coating or dipping) an emulsion of a high molecular weight organic material charged either positively or negatively and an emulsion or dispersion of an oppositely charged material.  The surface coated may be metal, glass, stone, concrete, wood, foamed plastics, paper webs, webs of woven fabric, belts, walls, cisterns, floors and sea-going vessels.  The surface may be a mould for the production of gloves.  The emulsions and dispersions may include natural rubber styrene-butadiene copolymer, terpene resin, phenol-formaldehyde resin, asphalt, polystyrene, butyl rubber, polyvinyl acetate, nitrile rubber, cellulose fibres, zinc oxide, phenyl-B-naphthylamine tetramethyl thiuran disulphide, waterglass, ammonium caseinate, toluene, olein, diethanolamine, silica, cetyl pyridinium chloride and water.  The coating may be waterproof, electrically conductive or bacteriostatic.
Patent GB-1532016-A (GB)
Title: Electric heater assembly and hairdryer comprising the sam
IPC: H05B3/16
Filed: 1976-02-25
Abstract: 1532016 Resistance heater RAYMOND INDUSTRIAL Ltd 25 Feb 1976 07497/76 Heading H5H An electric heater for a hair dryer comprises a wire resistor 8 intermittently supported by an insulator 6 and a thermal sensor 9 mounted on the support 6, a portion 10 of the resistor 8 being looped towards the sensor 9. The sensor may be a bimetallic thermostat and/or a thermal fuse. Two thermostats operating at different temperatures may be utilized. The looped portion 10 is arranged upstream of the sensor so that overheating of the heater can be quickly arrested. Two concentric resistors 8 are provided connected in parallel. One or both may be energized. In Fig. 5, the resistor is supported in parallel runs 15 by spaced mica plates 13 secured in a plastics frame 12. A bimetallic thermostat 16 is mounted on a further mica plate 14 secured to frame 12 and a loop 17 of the resistor is attached adjacent the thermostat 16 by hooks 18. A thermal fuse may also be provided.