baber/WOPTO huggingface dataset:
Patent GB-497501-A (GB)
Title: Apparatus and method for the reproduction of sound records in which the positive and negative half-waves are recorded separately
IPC: G11B7/00
Filed: 1937-10-04
Abstract: 497,501. Optical sound-reproducing apparatus; valve circuits ; electron multipliers. ZEISS IKON AKT.-GES. Oct. 4, 1937, No. 26860. Convention date, Nov. 19, 1936. [Class 40 (ii)] [Also in Group XL] Apparatus for the reproduction of counterphase sound records comprises a normal photo-cell for the exploration of one halfwave sound track and a photo-cell in which phase reversal takes place by liberation of secondary electrons for the exploration of the other half-wave sound track. As shown, both cells are disposed in a common envelope 11 having a pair of anodes 13, 14 and a common cathode 12 carrying a screen 20. Around the anode 14, which is of high secondary emissive power, is arranged an auxiliary anode 15, which is of grid form and is connected with cathode 12 through a low impedance, which may either be a condenser or a battery having a sufficiently small resistance. The anode 15 has a steady positive potential which is higher than that applied to the main anodes 13, 14. The cell is coupled to the input valve 19 of the amplifier by the usual condenser 16 and coupling resistances 17, 18. In operation, the light impulses which fall on the left side of the cathode liberate a photo-current in known manner and hence bring about a corresponding drop of potential in resistances 17, 18 whilst the light impulses falling on the right side of the cathode first produce a photocurrent of the same magnitude and direction, the impact of the electrons on the anode 14 then liberating secondary electrons at the latter which are attracted by the auxiliary anode 15. Providing the number of secondary electrons emitted by anode 14 is twice the number of the primary electrons impinging thereon, then the resulting external current will be of the same magnitude as, but of opposite phase to that produced on illumination of the left-hand side of the cathode. If desired, the two cells can be adjusted to exactly equal sensitivity by adjustment of the potentials applied to the main anodes and /or to the auxiliary anode or by arranging stops, grey wedges &c. in the light path of the two parts of the photo-cell. According to a modification, Fig. 1 (not shown), the cells may be arranged in separate envelopes.
Patent GB-335043-A (GB)
Title: Manufacture of vat dyestuffs
IPC: C09B7/08
Filed: 1929-09-04
Abstract: 335,043. I. G., Farbenindustrie Akt.- Ges. June 28, 1929, [Convention date]. Addition to 318,107. Indigo series. - Vat dyestuffs are prepared by condensing alpha-oxyanthracene with a 4-methyl-5- halogen-7-alkoxyisatin-alpha-derivative. In examples, alpha-oxyanthracene is condensed, in chlorbenzene, with 4-methyl-5-chlor- and 4-methyl-5-brom-7- methoxyisatin-alpha-chloride, the chlorides being obtained from the corresponding isatin by treatment with phosphorus pentachloride in chlorbenzene. The dystuffs dye fibres from the vat, bluish green tints, fast to light. 4-Methyl-5-halogen-7-alkoxyisatins are prepared by halogenating the parent isatins preferably in the presence of a solvent, e.g. glacial acetic acid or sulphuric acid. Specifications 7819/09 and 3206/10 are referred to.
Patent GB-171367-A (GB)
Title: Process of producing hydrocarbons of relatively low boiling point from tar oils
IPC: C10G47/02
Filed: 1921-10-11
Abstract: Comparatively low boiling hydrocarbons are made by heating tar oils under pressure, in the presence of tin and hydrogen.  The tar oil is charged into a preferably tin-coated pressure vessel, metallic tin is added, and hydrogen, at a pressure of usually 10-20 atmospheres, admitted.  The vessel is heated usually to 250-320 DEG C. for a few hours, and the contents fractionated, whereby 80-90 per cent distil up to 200 DEG C., leaving an oily residue suitable for use as a lubricant.ALSO:Comparatively low-boiling hydrocarbons suitable for motor fuel, and a residue suitable for lubricating are made by heating tar oils under pressure in the presence of tin and hydrogen, and fractionating.  The tar oil is charged into a preferably tin-coated pressure vessel, tin is added, and hydrogen, usually at a pressure of 10-20 atmospheres, admitted.  The vessel is heated usually to 250-320 DEG  C. for a few hours, and the contents fractionated up to 180-200 DEG  C. 80-90 per cent distils over.
Patent GB-616424-A (GB)
Title: A pressure cooker and steriliser
IPC: A47J27/082
Filed: 1946-09-07
Abstract: 616,424. Pressure cookers. PENTECON, Ltd., and HELDEN, W. VAN. Sept. 7,1946, No. 26956. [Class 66] [Also in Group XVIII] A pressure cooker, &c., of aluminium, or of an aluminium alloy is formed of two cup-shaped pressings welded together at B, the top and bottom being thicker than the sides. The lid C which may be off-centre and elliptical, is punched out. overlapping rabbetted edges being formed by pressing. A rubber packing ring E is inserted, and the lid held up by a beam G passing under a strut F<1> the ends of which are held in strips F which secure the handle F<3> which is fitted on a rod F<2> and is of heat insulating material, widely flanged at its ends. Downward pressure by a screw G<2> presses the beam G against the strut F<1> and tightens the lid. The cooker may contain a large vessel J resting on depressions J<1> and smaller vessels shaped to fit closely, resting on a partition or grid L which may have depressions L<1>. Strip handles N on the inner vessels facilitate removal by hooks which may be extensible. A spring-andball safety valve, a pressure gauge, and a whistle may be fitted.
Patent GB-430558-A (GB)
Title: Orthodontia band bracket
IPC: A61C7/28
Filed: 1934-09-19
Abstract: 430,558. Orthodontic appliances. RICHARDSON, S., 8303, Fountain Avenue, and BOYD, C. E., 515, North McCadden Place, both in Los Angeles, U.S.A. Sept. 19, 1934, No. 26983. [Class 81 (ii)] An orthodontic appliance comprises a tooth band 10 to which is secured a bracket 11 provided at its front portion with a notch 12 for the reception of the usual arch bar 13. The bar 13 is held in place by a sliding catch or hook 18 formed with vertical legs 15 guided in tubes 14 on the bracket, under the influence of springs 16.
Patent GB-695729-A (GB)
Title: Improvements in and relating to the construction of precast concrete buildings
IPC: E04B2/66
Filed: 1950-11-06
Abstract: 695,729. Concrete buildings. BRUCE, R. Feb. 4, 1952 [Nov. 6, 1950], No. 27023/50. Class 20(iv) Walls of buildings are formed of a number of precast, reinforced, or prestressed, concrete columns a which rest on foundation blocks a' and are provided on opposite faces with longitudinally extending channels b to receive precast, reinforced, or prestressed, concrete planks c, the superimposed planks being notched at d to fit within the channels b and being provided with projections and recesses of bird - mouth section along their upper and lower edges respectively to fit one into the other. The ends of the planks are held in the channels by clamps g, Fig. 7, and a damp course lining may be introduced between the opposed faces of the channels and planks. A concrete frame l<SP>1</SP> for a window l has projections and recesses along its upper and lower edges to mate with the planks c, panels m each having one vertical side with a groove of re-entrant bird mouth section mating with corresponding projections on the side of the frame and the other side notched to fit in the channel b of the adjacent column a. A concrete door frame m' similarly engages upper and lower planks c, one side of the frame being formed with a rib to engage the channel of the adjacent column a, and the other side being formed with a rebate to receive projections on the adjacent sides of shorter panels c. Introduced between adjacent planks at intervals are metal plates p, Fig. 8, which extend inwardly to receive plaster board, or other lining material. The columns may be channelled along three or four faces when they are used at the junctions of three or four walls respectively. The roof may be likewise formed of concrete rafters h which meet at the apex of the roof, the rafters being provided with channels i to receive concrete planks j. The planks are clamped into the channels i, and the roof is preferably covered with suitable covering k.
Patent GB-1533727-A (GB)
Title: Detinning of tin scrap and recovery of tin
IPC: C25C1/14
Filed: 1976-06-29
Abstract: 1533727 Detinning scrap metal M & T CHEMICALS Inc 29 June 1976 [30 June 1975] 27072/76 Heading C7B Tin scrap is supplied to a perforated rotating cylindrical anode 20 containing a helix 27 by a vibrating storage hopper and shoot 11 wherein it is in electrical contact with a caustic alkali solution and cathodes contained in tank in which the rotating anode is located. The tin is removed from the scrap metal by electrolysis and deposits on the cathodes which may be Fe or Sn. The detinned scrap is passed through the helix of the anode and is discharged from the exit end of the cylindrical anode, washed and passed to a discharge conveyer for collection. The electrolyte used may contain sodium and potassium hydroxide, sodium and potassium pyrophosphate and does not contain an oxidizing agent and may be heated by steam coils in the tank which may be enclosed by insulating side and end-walls.
Patent GB-782005-A (GB)
Title: Pressure sensitive tapes
IPC: C09J7/38
Filed: 1955-09-22
Abstract: 782,005. Adhesive tapes. MIDLAND SILICONES, Ltd. Sept. 22, 1955 [Oct. 7, 1954], No. 27089/55. Drawings to Specification. Class 140. A pressure-sensitive adhesive tape comprises a flexible backing consisting essentially of an organopolysiloxane free from organic silicates, having on one side a coating of a silicone adhesive and on the other a dried coating of a titanium compound of general formula Ti(OR) 4  or an aliphatic hydrocarbon-soluble partial hydrolysate thereof in which R is an aliphatic hydrocarbon radical containing less than 13 carbon atoms, or a hydroxylated aliphatic hydrocarbon radical containing less than 13 carbon atoms and containing less than 4 hydroxyl groups. The backing materials specified are polymers, copolymers and mixtures of units of general formula R n SiO 4-n/3 where R may be methyl, ethyl, octadecyl, phenyl, anthovenyl, tolyl, xylyl, methyl naphthyl, benzyl, phenylethyl, cyclohexyl, cyclopentyl, vinyl, allyl, chloromethyl, difluorophenyl, bromophenylethyl, trifluorovinyl and ααα trifluoromethylphenyl radicals, and n has an average value of from 1 to 2.1. Fabrics such as glass cloth, asbestos cloth, cotton, nylon or other organic fabrics may be coated with the above silicone compounds, or the said compounds may be used above as the backing. The adhesives are silicone adhesives, such as those comprising: (1) 5 to 70 per cent by weight of a benzene soluble resinous copolymer of SiO 2  units and R<SP>1</SP> 3 SiO¢ units, where R<SP>1</SP> is an alkyl radical containing less than 4 carbon atoms or a phenyl radical, and where the ratio of R<SP>1</SP> 3 SiO¢ units to SiO 2  units is from 0.6: 1 to 0.9 to 1 inclusive; and (2) 30 to 95 per cent by weight of a dicyanopolysiloxane having general formula R<SP>11</SP> 2 SiO where R<SP>11</SP> is methyl or phenyl, and having a viscosity of at least 1,000,000 c.s. at 25 C., at least 90 per cent of the total number of R<SP>1</SP> and R<SP>11</SP> radicals being alkyl radicals. Examples of the titanium compounds are tetramethyl titanate, tetraethyltitanate, tetradecyl titanate, octylene glycol titanate, tetra (2-ethyl hexyl) titanate, tetradodecyl titanate and tetraisopropyl titanate. Specifications 608,956, [Group IV (a)], and 740,573 are referred to.
Patent GB-682358-A (GB)
Title: Balanced impeller for centrifugal pump
IPC: F04D29/22
Filed: 1950-11-06
Abstract: 682,358. Centrifugal pumps. BENDIX AVIATION CORPORATION. Nov. 6, 1950 [Nov. 22, 1949], No. 27092/50. Class 110(i) A . centrifugal pump comprises an impeller having front and rear shrouds, one of which has a larger area than the other, and the larger shroud is provided with at least one relatively shallow groove to whirl the fluid and thereby balance the fluid force on the larger shroud with the fluid force on the other shroud. Shallow radial grooves 40 are formed in the rear shroud 34 of the impeller 20, and exert a pumping action on the fluid to reduce the pressure on the rear shroud 34 so as to balance the axial force due to the pressure acting on the front shroud 32. The length L of the grooves is increased by trial and error until the balance is obtained.
Patent GB-242969-A (GB)
Title: Audion and high-frequency amplifying tube
IPC: H01J21/02
Filed: 1925-10-29
Abstract: 242,969. Loewe, S. Nov. 13, 1924, [Convention date]. Vacuum tubes.-A grid leak and a grid condenser are structurally united with a tube which is suitable for use as a detector or high-frequency amplifier. The condenser and grid leak may be situated either in the vacuum space or in the sup porting foot. As shown, a grid leak 10, which connects the grid 3 to one end of the filament 2, and a condenser 11. connected to the grid and to one of the usual valve pins 8, are mounted on the foot. An additional leading-in wire directly con. nected to the grid is attached to a terminal 12. The tube may contain more than one grid. According to the Specification as open to inspection under Sect. 91 (3) (a), the condenser and leak resistance may be mounted in sealed glass tubes; the condenser may consist of two strips of foil and a strip of mica wound together; and direct connection from the grid may be made to a fifth contact pin or to the metal ring of the cap. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 232,672.
Patent GB-260618-A (GB)
IPC: G04C23/02
Filed: 1926-10-29
Abstract: 260,618. Siemens - Schuckertwerke Ges. Nov. 2, 1925, [Convention date]. Plug couplings combined with electric switches.-A load e is connected by flexible conductors f to a plug-box c arranged on a base a with a time-switch d, so that the load can be switched off at a predetermined time.
Patent GB-1531887-A (GB)
Title: Method of producing a continuous length of foam plastics material of rectangular cross-section
IPC: B29C44/46
Filed: 1976-06-30
Abstract: 1531887 Casting a continuous length of foam MASCHINENFABRIK HENNECKE GmbH 30 June 1976 [20 Dec 1975] 27223/76 Heading B5A A foam plastics length 12 of rectangular cross-section is produced by applying foamable material 13 (e.g. a mixture of a polyol and an isocyanate) from an applicator 5 on to the upper run 6 of an endless belt 1, which is provided with side walls 2 and is covered with a bottom and side sheet 4 fed from an unwinding device 3. A cover sheet 8 is applied to the material at an angle α (see Fig. 3) of at least 60 degrees (e.g. 120 degrees) in the region of a levelling device 10 or 10<SP>11</SP> that produces a build-up 14<SP>11</SP> of material. In one embodiment the cover sheet 8 is applied at an angle α, of 120 degrees around a doctor member 10<SP>11</SP> adjustable horizontally and vertically and positioned upstream of the region where foaming begins. Alternatively, a is 60 degrees (see Fig. 1 and Fig. 2, not reproduced) and the levelling device comprises a roller 10 and a floating grating 11. The upper run 6 of the belt 1 can be inclined to aid material build-up, or the machine started with an excess of material. The sheets 4/6 are removed after moulding. Reference has been directed by the Comptroller to Specification 1,392,859.
Patent GB-787873-A (GB)
Title: Improvements in thermoplastic compositions
IPC: C08L95/00
Filed: 1955-09-26
Abstract: A thermoplastic composition of use in sealing expansion joints in paving constructions is prepared by heating at a temperature from 400 DEG F. to 650 DEG F. a mixture of a major proportion by weight of asphalt, e.g., of M.P. 100 DEG F. to 200 DEG F., preferably 100 DEG F. to 130 DEG F., and a minor proportion by weight of vulcanized butyl rubber scrap, with or without a hydrocarbon oil, e.g., lubricating, transformer, coal tar or light mineral oil in the proportion of up to 10 per cent by weight of the total mix, for a time to dissolve the butyl rubber, generally 2-4 hours. Specification 513,521 [Group IV] is referred to.
Patent GB-670084-A (GB)
Title: Improvements in or relating to liquid cooling apparatus
IPC: F28D3/02
Filed: 1948-10-21
Abstract: 670,084. Milk and other film coolers. WOLSELEY SHEEP SHEARING MACHINE CO., Ltd., and MACNAMARA. H. J. Oct. 21, 1949 [Oct. 21, 1948; Jan. 13, 1949], Nos. 27338/48 and 936/49. Class 64(iii) Tubes 5, secured wall-to-wall in a common plane to form a heat exchanger, have openings such as eyelets 7, Fig. 3, to - enable a heat exchange medium to circulate sinuously through the apparatus from one remote tube to the other, the ends of the remote tubes 4 being extended and supported by uprights (legs 13 and pillars 14 including brackets 15) spaced from the ends of the shorter tubes 5 to facilitate - cleaning. Milk or ice cream mix flows by gravity over the tubes, forming a cooler 1, from a perforated trough 9 to a lower trough 10 from which it may pass over a similar, lower cooler 2 to a lowermost trough 12. In this two-stage cooling, a liquid coolant circulates through the upper cooler 1 and a gaseous refrigerant through the cooler 2, both under pressure. Lugs 18 on the brackets 15 support the troughs and the tubes 5 are closed by end discs 6 and are soldered or brazed together. Bores in the brackets 15 communicate with the long tubes 4 by means of flanges 16 which fit into the tubes. At the ends of the tubes are unions 17 or closure plugs (not shown). According to the first Provisional Specification, the uprights have collars fitting over the ends of the long tubes and the collars have means for inter-engaging two coolers for a two-stage apparatus. According to the second Provisional Specification the collars engage over screwed connections at the ends of the long tubes and are locked in position by nuts.
Patent GB-1057562-A (GB)
Title: Improvements in or relating to air data computers
IPC: G06G7/76
Filed: 1963-07-10
Abstract: 1,057,562. Electric indicating systems. HONEYWELL Inc. July 10, 1963 [July 10, 1962], No. 27366/63. Heading G1N. In an airborne data indicator, indicated static pressure P si  is supplied to a pressure transducer 10, the output 18 of which is modified to represent mechanically the true static pressure P si  57, 59, this mechanical signal being combined at 58, with a mach-dependent mechanical signal 160 derived from a servomotor 77, the resultant forming a "static pressure error" input 16 to the transducer 10. The servo loop 23, 25, 32 associated with transducer 10 provides a signal hp, at 56, representing so-called "pressure altitude"; and cams 46 derive from this the true static pressure P, which provides a further ("rebalance") input 14 to the transducer 10. The servomotor 77 may be part of a second servo loop associated with a second differential pressure transducer 60 which has a "total pressure" input, P, as well as P si  input, and the mach signal from servo 77 is modified by cams 100 to give a log Pt/Ps-1) signal at 106. This signal is added, at 111, to a log P s  signal from a cam 114 thus providing a log (Pt-Ps) signal; and consequently a pressure differential (Pt-Ps) signal is supplied to the rebalance input 64 of transducer 60; the signal at 106 is also modified by cam 108 to give a #P/Ps signal which is multiplied at 58, with the Ps signal from 59 to give the required static pressure error input, # p  to the transducer, 10. Various pressure and mach data may be obtained from selected points in the system, such as pressure altitude, pressure altitude rate, true static pressure, mach number, mach hold, mach rate, and log (total pressure - true static pressure).
Patent GB-508635-A (GB)
Title: Handle for cooking vessels
IPC: A47J45/07
Filed: 1938-09-20
Abstract: 508,635. Cooking-vessel handles. JOBLING & CO., Ltd., J. A. Sept. 20, 1938, No. 27382: Convention date, Oct. 22, 1937. [Class 66] A cooking vessel handle 15, Fig. 3, is formed of " tempered glass, i.e. the handle after moulding to the shape shown is cooled rapidly to a temperature below the '' strain " point, and is attached to the vessel by means of a metal clamp, Fig. 4, which engages the end 16 of the handle and the lugs 14, Fig. 5, of a metal band 13 which is disposed in a groove formed below the rim of the vessel. The parts are secured together by a bolt, passed through the holes 26 in the clamp and holes 26<1> in the lugs and by a second bolt passed through the other pair of holes in the clamp and disposed in the notch 17 of the handle end.
Patent GB-482527-A (GB)
Title: Improvements in necktie holders
IPC: A41D25/02
Filed: 1936-10-09
Abstract: 482,527. Necktie retainers. TOWN, H. Oct. 9, 1936, No. 27409. [Class 43] A necktie retainer of the shape shown has pivoted at the back of a central portion a thereof, a part c which may be moved to lie behind the portion a or to extend below it, the tie being folded round the retainer when the part c is below the portion a ; the part c is then moved behind the portion a and a slot d therein is engaged with a collar stud to hold the tie and retainer in position on a collar. The portion a may be bent forwardly at the top to leave a space for the tie between the portion a and the part c which may be provided with a flange c<1>. The slot in the part c may be formed by two circular holes connected by a narrow slit to allow for vertical adjustment of the holder on the collar, or a keyhole slot with a notched edge may be provided for the same purpose.
Patent GB-289345-A (GB)
Title: A machine for cleansing plates, crockery and the like
IPC: A47L15/33
Filed: 1927-10-17
Abstract: 289,345. Daborn, A. V. Oct. 17, 1927. Dishes, washing.-The dishes, supported in a rack N and in a basket Q within a casing A containing liquid, are washed by means of a rotatably-mounted frame G provided with scoops H which, during the rotation of the frame, lift liquid from the bottom of the casing and splash it over the dishes. The frame may be power-driven, or may be driven by hand through the medium of gearing K, L and a cranked handle M. To facilitate the washing the plates in the rack N are preferably supported in an inclined position.
Patent GB-348001-A (GB)
Title: Manufacture of alkoxyaldehydes
IPC: C07C45/51
Filed: 1930-09-15
Abstract: In the production of alkoxyaldehydes by the partial hydrolysis of alkoxy acetals as described in the parent Specification, the alkoxyaldehyde is separated rapidly in the form of vapour, for instance by running the reaction mixture into a fractionating column charged with water and steam, or by dropping it into boiling water connected with the fractionating column.  The extent of the hydrolysis may be controlled by adding an accelerating substance such as a strong acid, or a retarding substance such as caustic soda, sodium carbonate, or magnesium carbonate.