baber/WOPTO huggingface dataset:
Patent GB-361125-A (GB)
Title: Improvements in or relating to electrically driven milling machines for milling metals
IPC: B23Q35/20
Filed: 1930-11-27
Abstract: 361,125. Milling. RENAULT, L., 8, Avenue Emile Zola, Billancourt, Seine, France. Nov. 27, 1930, No. 35729. Convention date, March 5. [Class 83 (iii).] In a milling-machine employing an electric tracer as described in Specification 233,747, [Class 83 (iii), Metals, Cutting], an additional slide k is provided on the column d which carries the tracer and cutter head c, a tracer o being slidably mounted on the slide and acting on the electric tracer g through a reversing mechanism so that a counterpart of the pattern j will be produced on the work i. The slide k and head o are traversed simultaneously over the work and pattern by the feed screw h. In one form, the tracer o is carried by a rod l kept in contact with the pattern by a weight r and bell-crank lever q and a pin s on the rod acts on a lever m which contacts at the other end with the electric tracer g. The lever m is pivoted about its exact middle point and is kept in contact with the pin s by a spring u. In another form the tracer rod 2, Fig. 2, is provided with rack teeth engaging a pinion 6 which meshes with a rack bar 3 carrying a lug 4 contacting with the electric tracer g, a spring 5 keeping the tracer o in contact with the pattern. In another form the rods 2, 3 are connected at their rear ends by a cable passing over an idle pulley and compression springs are mounted on the rods, that tending to keep the tracer o in contact with the pattern being the stronger. Reversing mechanisms other than those described may be used.
Patent GB-469003-A (GB)
Title: Files cut with double cut
IPC: B23D71/00
Filed: 1936-12-30
Abstract: 469,003. Files. UFER, H. Dec. 30, 1936, No. 35781. [Class 61 (ii)] [Also in Group XXII] Double cut files are made by a process involving a smoothing off between the first and second cut to remove the burr, the ratio of the depth of cuts being respectively 1 to 3. The file, after the first cut, is shown in section both with the burr B, in position, and after it has been removed as by grinding, the forming chisel a being shown with working surfaces on planes I-I and II-II corresponding to the tooth breast band back h the breast being longer than the back. In Fig. 3, is shown a section of the file after the second cut, the breast m of the second cut being substantially at right-angles to the file surface. The pitch t of the first cut is much smaller than the pitch w of the second cut.
Patent GB-1273465-A (GB)
Title: Production of a semi-conductor device having a p-n junction
IPC: H01L21/22
Filed: 1970-07-24
Abstract: 1,273,465. Semi-conductor devices. MONSANTO CO. 24 July, 1970 [23 March, 1970 (2)], No. 35973/70. Heading H1K. [Also in Division C4] An apertured layer of phosphorus-doped silica is used as a diffusion mask during the diffusion of a P-type dopant into an N-type semi-conductor body, the phosphorus-doped silica layer and an underlying surface layer of the semi-conductor body being removed after the diffusion process. The invention is applicable to the manufacture of microwave devices or transistors in bodies made of Si, Ge, nitrides, phosphides or antimonides of B, Al, Ga or In, or sulphides, selenides or tellurides of Zn, Cd or Hg, but in the preferred embodiments the device is a GaAs 1-x P x  (x = 0 to 1 inclusive) lightemitting diode. The mask against Zn diffusion to produce the P-type region 6 in the initially N-type Te doped body 1 comprises superposed layers of pure silica, phosphorus-doped silica and pure silica produced by vapour phase oxidation of silane, and simultaneously of phosphine for the doped layer. The body 1 initially comprises an epitaxial layer on a GaAs substrate which, in the form shown, is removed after diffusion of the region 6. Alternatively part or all of the substrate may be retained in the final device. A fresh silica coating 3 may optionally be applied to the surface of the body 1 before metallization to form an Al electrode 7. The electrode 7 may be annular, and may surround a portion of the silica layer 3 to act as a lens. The lower electrode is formed by successively applying layers of Sn, Au, Ni and Au and then alloying to form a metal layer 13 and a semiconductor/metal alloyed layer 12. In a modification the alloying may be done in two stages, firstly involving only the Sn and Au layers, and then involving the subsequently applied Ni and Au layers. A preform 14 of Au/epoxy, Au/Si, Sn/Pb or Au/Ge bonds the device to an Auplated Kovar (Registered Trade Mark) plate 15 and the whole device is potted in an epoxy lens after the application of Au leads 17, 18. The Kovar plate 15 may be replaced by Mo and/or Mn, Mo/Au or a alumina support printed with Au/Pd and fired.
Patent GB-635129-A (GB)
Title: Improvements in or relating to rubber stabilizing and reclaiming agents
IPC: C08J11/28
Filed: 1946-12-09
Abstract: Dicresol sulphides of formula: <FORM:0635129/IV (b)/1> in which R1 and R2 are alkyl groups the sum of whose carbon atom equals 6-20, and R1 and R2 each preferably contain 3-10 carbon atoms, and x is 1 to 4, are prepared by treatment of a 4 : 6-dialkyl-m-cresol, in which the two alkyl groups are R1 and R2, with a sulphur chloride.  An inert solvent such as carbon tetrachloride may be used.  A monosulphide is the preferred product, and for its preparation sulphur dichloride is used at room temperature. Preferred starting-materials are 4 : 6-ditertiary-amyl-m-cresol and 4 : 6-ditertiary-butyl-m-cresol, and examples are given of the treatment of the latter compound with sulphur monochloride and sulphur dichloride.  Other cresols specified are 4 : 6-diheptyl-, 4 : 6-diisopropyl -, 4 - tertiarybutyl - 6 - isopropyl-, 4 - ethyl - 6 - undecyl -, 4 - undecyl - 6 - ethyl-, 4 : 6 - didecyl -, 4 - butyl - 6 - octyl -, and 4-tertiarybutyl-6-octyl-m-cresol.ALSO:Sulphides of formula:-<FORM:0635129/V/1> in which R1 and R2 are alkyl groups the sum of whose carbon atoms equals 6 to 20 and x is 1 to 4, are used as softening agents for reclaiming vulcanizates such as cured butadiene and styrene copolymers, and as stabilisers for synthetic rubber latices, e.g. copolymers of butadiene with styrene or acrylonitrile, and for the coagulated copolymers themselves. R1 and R2 are each preferably 3-10 carbon atoms.  The preferred sulphides are di(3-methyl-4:6-ditertiarybutylphenol) monosulphide and di(3-methyl-4:6-ditertiaryamylphenol) monosulphide.
Patent GB-821792-A (GB)
Title: Improvements in and relating to method and apparatus for forming a socket at the end of a pipe and the pipe resulting therefrom
IPC: B29C57/08
Filed: 1957-11-22
Abstract: 821,792. Moulding sockets on thermoplastic pipes. COMPAGNIE DE PONTAMOUSSON. Nov. 22, 1957 [Nov. 26, 1956], No. 36420/57. Class 87(2). After the end 1 of the pipe T has been heated to render it malleable, a progressive radial expansion of the end of the pipe is caused within a mould M which has the shape of the required socket and is coaxial with the pipe, by subjecting the whole of the inner periphery 4 of the transverse end face 5 of the pipe to a positive mechanical expanding action and, simultaneously a region of the inner face 2 of the pipe adjacent the end face to the action of a fluid under pressure. To bring about the mechanical expanding action, a punch P is moved progressively axially and inwardly of the pipe. This punch has a cylindrical part 13 of diameter equal to that of the interior of the pipe, an annular recess 14 to which is connected a pipe 15 through which the fluid under pressure, e.g. compressed air, is fed, and a conical part 19. The compressed air enters the closed annular space defined by the part 19, a sealing ring 18, and the malleable wall of the end 1 of the pipe. During its expansion, the end of the pipe is in contact with the conical part 19 of the punch P only along its inner edge 4, i.e. along the smallest possible surface of the pipe, and friotion is therefore minimised. If the major diameter of the conical part 19 be made somewhat smaller than that shown in Fig. 2, the socket will be formed with an inner flange.
Patent GB-1531778-A (GB)
Title: Reaction of epoxides with organic compounds containing reactive hydrogen
IPC: C08G65/26
Filed: 1976-09-02
Abstract: A process is provided for the condensation of epoxides with organic compounds having an active hydrogen atom, such as alcohols, polyols, and amines, in the presence of a neutral inorganic salt selected from the group consisting of sodium fluoborate, magnesium perchlorate, calcium perchlorate, manganese perchlorate, nickel perchlorate and zinc perchlorate.
Patent GB-429201-A (GB)
Title: Improvements in the treatment of glauconite
IPC: C01B33/46
Filed: 1933-12-30
Abstract: Washed and cleaned glauconite is subjected to a dehydrating heat treatment by being baked in an oxidizing or neutral atmosphere at temperatures between 430 and 730 DEG  C. for a period of 1--2 hrs. and then digested with caustic alkali of concentration greater than 15 per cent for a period sufficient materially to increase its base exchange capacity permanently.  Preferably a hot or boiling solution of caustic soda of 30--40 per cent strength is used and digestion may take place for 1--2 hrs.  In using weaker solutions the time of treatment must be increased or the temperature be raised and the treatment be effected under pressure.  Sodium silicate may be added to the caustic soda, which may be used repeatedly and be periodically purified and restored to the desired strength.  The surfaces of the treated and washed product may be stabilised by successive treatment with a weak solution of an alkali silicate and a weak solution of an acid-reacting salt such as aluminium sulphate or alum. Specification 265,578, [Class 1 (iii)], is referred to.
Patent GB-1374685-A (GB)
Title: Spring base
IPC: A47C27/06
Filed: 1972-08-07
Abstract: 1374685 Mattresses SPRING ASSOCIATES Inc 7 Aug 1972 [3 Jan 1972] 36784/72 Heading A4M A spring base for a bed comprises a plurality of coil springs 30 each having a closed upper turn 32 secured to a grid defined by longitudinal and transverse rods 22, 24 welded together at their intersections 26, the end turn 32 being clamped between pairs of longitudinal and transverse rods 22, 24 respectively bearing on the under and upper sides of the end turn 32. The lower end 33 of each spring is engaged by a crimp 38 in a bottom frame 36.
Patent GB-1292702-A (GB)
Title: Water-insoluble monoazo dyestuffs and process for their manufacture and use
IPC: C09B62/085
Filed: 1970-07-30
Abstract: 1292702 Disperse monoazo dyes FARBWERKE HOECHST AG 30 July 1970 [30 July 1969] 36842/70 Heading C4P The invention comprises monoazo dyes, free from acidic water-solubilizing groups, of formula wherein D is the radical of a benzene diazo component, Y is a H or halogen atom or an alkyl, alkoxy or acylamino group, Z is a H or halogen atom or an alkyl or alkoxy group, R is H or an alkyl group. A is alkylene and B and C are alkoxy or amino. The radical D and groups R, B and C (when amino) may be further substituted. The dyes are prepared by azo coupling and may be used to colour synthetic polyamide, polyester and cellulose acetate fibres in yellow, red and blue shades.
Patent GB-449260-A (GB)
Title: Improvements appertaining to reflectors for street and like lamps
IPC: F21V33/00
Filed: 1934-12-22
Abstract: 449,260. Mounting reflectors for street &c. lamps. SUTTON, C. J., 19, Nelson Square, Bolton. Dec. 22, 1934, No. 36889. [Class 75 (ii)] A reflector holder for street and like lamps is made in sections a which grip the gas supply pipe B or like support, each section being made in pliable sheet metal so that the angle of the detachable reflector b mounted thereon may be adjusted by hand. The brackets mav also be adjusted about a vertical axis by means of the bolts c. Each section a is turned over at the end a<3> to hold the reflector b, which is notched at a<2> to engage the pipe B. Each reflector comprises a central flat part and two, four or more side parts b<3> each at an adjustable angle to the central part.
Patent GB-1216609-A (GB)
Title: Jointing strip assembly for use in building
Inventor: GOBEL KLAUS
IPC: E04D13/14
Filed: 1968-08-02
Abstract: 1,216,609. Roof-flashing reglet arrangement. K. GOBEL. 2 Aug., 1968 [4 Aug., 1967], No. 36896/68. Heading E1W. The edge of a roofing sheet 1, or flashing overlapping a roofing sheet, is attached to an adjacent upwardly extending wall 4 by a jointing strip profiled to provide a main web 9 intended in use to lie parallel to the wall 4 and a forwardly projecting web 14 extending from the upper edge of the main web and which is inclined first, upwardly away from the .main web and then downwardly away therefrom to constitute a formation to prevent backwash of rain, and carries a depending flange 16, the undersurface of the web 14 and the inner face of the flange 16 constituting a retainer formation which serves to locate a retaining strip 6 for retaining the edge of the roofing sheet 1 or flashing. In the embodiment of Fig. 1 mounting brackets 2 for the jointing strip serve to carry a shielding strip 8. Furthermore the retaining strip 6 is located by a detent arrangement 12, 13, and by clamping dogs 17, 18. Numerous modifications of the jointing strip, retaining strip and mounting arangements are described with reference to Figs. 2 to 11 inclusive (not shown).
Patent GB-1485482-A (GB)
Title: Reagent unit
IPC: G01N33/96
Filed: 1974-08-22
Abstract: 1485482 Prefabricated reagent dose MONEGA ANSTALT 22 Aug 1974 [7 Feb 1974] 36982/74 Heading G1B A prefabricated reagent unit for standardized microanalyses comprises a micro unit dose of a reagent bound to a solid carrier provided with a magnetic material, the dose having been dispensed as a precise amount of up to 30 microlitres with an error less than  1%. On introduction of the dose into a test reaction mixture the reagent may be made to dissolve and mixing to take place by causing movement of the carrier in the reaction mixture using for example a coil. The reagent may be dispensed from a syringe as unit amounts or as a continuous streak on to a plastics band containing magnetic material, Figs. 1, 2, then the band is cut into unit lengths, or alternatively the reagent in the form of a gel is extruded from a syringe and cut into unit strips which fall into individual tubular carriers, Fig. 4. The permanently magnetic or magnetizable material may be iron wire 47 set in the walls of the carriers; for use the carrier with its ends open is dropped into a solution in a reaction mixture tube and caused to move up and down by means of electro-magnetic coils surrounding the tube. The unit dose carriers may be stored in a cassette Fig. 6 (not shown) having a spring- loaded dispensing device. The reagent may be adhered to the carrier as an unviscous substance solidified by cooling or as a partially solid substance comprising an inert viscosity raising material such as agar-agar, pectin, gelatine or a cellulose derivative. Examples relate to the determination of creatinine in blood serum using alkaline picrate and the determination of alkaline phosphatase in blood serum using sodium phenyl phosphate and reagent units comprising 4 amino-antipyrine and potassium ferricyanide. Apparatus for producing reagent units by initially distributing reagent on to a moving plastics band having magnetic material embedded in it comprises a syringe pipette and a synchronous motor for driving the plunger of the pipette, a unit for moving the plastics band uniformly past the mouth of the pipette so that the reagent is deposited on the band as a continuous bead, a synchronous motor for driving the unit and a cutting device for cutting the band and the bead deposited on it into unit lengths. Specification 1485481 is referred to.
Patent GB-522958-A (GB)
Title: Improvements relating to hot-water central heating systems
IPC: F24D3/08
Filed: 1938-12-20
Abstract: 522,958. Heating buildings. OPPENHEIM, I. Dec. 20, 1938, No. 37089. Convention date, March 14. [Class 64 ii)] In a hot-water heating system, the flow and return pipes d, f, Fig. 2, of the radiators are connected by a rear section n of the boiler communicating at its upper end with the main boiler water space through a passage provided with a valve t, Fig. 3, which controls the relative quantities of boiler water and return water entering the flow pipe. The boiler supplies water at constant temperature to a water heater B through connections a, g.
Patent GB-833775-A (GB)
Title: Improvements in or relating to transistors
IPC: H01L29/00
Filed: 1956-12-05
Abstract: 833,775. Transistors. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 5, 1956 [Dec. 8, 1955], No. 37181/56. Class 37. In a PNP junction transistor comprising a semi-conductive disc 1 with base 2, emitter 3 and collector 4 contacts, the emitter is surrounded by an annular junction rectifying contact 5 which is biased in the forward direction by a constant potential when the transistor is connected for operation. The annular contact is spaced from the emitter by a zone the width of which is less than three times the diffusion length of the minority load carriers in the semiconductive material, and functions to inject additional minority carriers in the vicinity of the emitter so as to decrease the concentration gradient to the base. It is stated that the arrangement increases the current gain and improves the operation at high frequencies.
Patent GB-1463063-A (GB)
Title: Process for producing moulded expanded urea-formaldehyde products
IPC: C08J9/30
Filed: 1973-08-06
Abstract: 1463063 Moulding expanded urea formaldehyde products IMPERIAL CHEMICAL INDUSTRIES Ltd 26 July 1974 [6 Aug 1973] 37196/73 Headings B5A and B5N A process for producing moulded expanded urea formaldehyde products comprises the steps of incorporating in a urea formaldehyde resin solution an acidic catalyst which causes gelling and curing of the resin solution, casting the mixture into an open top mould to gel, partially drying and curing the resulting gel at a temperature less than 70 C. to produce a preform, and subsequently heat treating the preform at a temperature above 120 C. in a closed restraining mould and allowing expansion of the preform therein. The resin solution may incorporate a foaming agent, and melamine formaldehyde resin may be used in addition to urea formaldehyde. The gel may be produced in a first, open, mould and then transferred to a second mould which is then positioned between the platens of a flat plate hot press having a closing pressure of about 50-300 and a platen temperature of 140- 155 C. Alternatively, the whole process may be carried out in the same mould, the mould being closed by a lid after the gel casting stage and being placed in a press, as described above, for the expansion process. The panels produced may be surfaced with synthetic resin skins, metal sheets, or paper skins to make sandwich boards. A laminated product may be obtained by casting a sheet-like preform which may then be cut up and stacked in a mould for the heat-pressure treatment. In an example, a mould is lined with a polyester film and a urea formaldehyde resin, which may contain plaster of Paris, is cast in a layer on it. After drying, the sheet formed is cut up, stacked in a mould and heated under pressure to give a laminated product.
Patent GB-1499229-A (GB)
Title: Method of manufacturing a magnetite article
IPC: H01F1/36
Filed: 1976-09-09
Abstract: 1499229 Pressing magnetite powder HOGANAS AB 9 Sept 1976 [19 Sept 1975] 37489/76 Addition to 1479959 Heading C1A [Also in Division B5] The process of the parent Specification is modified in that the preform of magnetite powder (Fe 3 O 4 ) is heated in a neutral atmosphere, e.g. nitrogen, argon to overcome variation of the conductivity found in preforms heated in air. The preform may be heated in the neutral atmosphere prior to or during hot pressing of the preform. Heating in the neutral atmosphere takes place in the range 900-1300 C. The preform may be pressed in a linear or isostatic press. The preform may be formed by compacting magnetite powder with a binder, e.g. P.V.C., dextrin at ambient or by filling an open metal box or can. The latter may be filled with an inert gas and partially evacuated prior to hot pressing.
Patent GB-1283401-A (GB)
Title: Improvements in apparatus for cutting carcases of meat
Inventor: AUBERT GEORGES
IPC: A22B5/20
Filed: 1969-07-25
Abstract: 1283401 Splitting carcases G AUBERT 25 July 1969 [7 Aug 1968 and 11 Sept 1968] 37544/69 Heading A4C [Also in Division A2] Apparatus for splitting carcases comprises a vertical column 1, Fig. 1, having a lead screw or rack 2 meshing with a stock 4 moveable up and down the rack 2, the stock carrying cutter blades 10, 11 reciprocated relative to the stock by a motor 5 levers 8, 8', 9, 9' and an eccentric 7. The stock has wheels 40, driven by a motor 3 to move the stock, and steadying wheels 39. Separation of the segments of the carcase as it is being split is effected by a wedge 38 on the stock 4 and by a separating device comprising rotatable pillars 12, 13, Fig. 2, pivotally supporting arms 16, 17 respectively, having end parts 23, 24 for abutting against inner surfaces of the segments of the carcase, members 32, 33 abutting against the outer surfaces of the carcase segments and being carried by arms 30, 31 pivoted to arms 16, 17 and moveable relative thereto by jacks 28, 29. The segments of the carcase are separated by manipulating bars 20. A positioning jack 36, Fig. 1 and an adjusting jack are fitted at the bottom of the separating device. The blades 10, 11 are inclined to the vertical so that they alternately strike at the same place.
Patent GB-801792-A (GB)
Title: Improvements in or relating to heterocyclic nitrogen-containing compounds
Inventor: DRAIN DAVID JOHN
IPC: C07D211/14
Filed: 1955-08-18
Abstract: The invention comprises compounds of the general formula <FORM:0801792/IV (b)/1> wherein R represents a hydrogen atom, or an alkoxy or alkylenedioxy group, and a process for their preparation by condensing phenylglutaric anhydride (or its alkoxy or alkylene dioxy derivative) with isovanillylamine and reducing the resulting glutarimide to the corresponding piperidine compound, preferably with lithium aluminium hydride.  In an example, isovanillin oxime in aqueous methanol is reduced with sodium amalgam to isovanillylamine (isolated as its hydrochloride salt) and then the free base refluxed with the appropriate b -(R-substituted phenyl) glutaric anhydride in xylene from which the corresponding glutarimide separated on cooling and is recrystallized from ethanol; subsequent reduction with lithium aluminium hydride in ether yields the desired piperidine derivative. Specified products are 1 - (3 - hydroxy - 4 - methoxybenzyl) piperidines substituted at position 4 by phenyl-, 2-, 3- and 4-methoxyphenyl-, and 3,4-methylenedioxyphenylgroups.
Patent GB-1498947-A (GB)
Title: Cutting blowpipes
IPC: F23D14/54
Filed: 1974-08-28
Abstract: 1498947 Nozzles BOC INTERNATIONAL Ltd 28 Aug 1975 [28 Aug 1974] 37613/74 Heading F4T A cutting blowpipe nozzle comprises a cutting oxygen passage 2 terminating at an end face 10, and preheat passages 8 for mixing of fuel gas and oxygen, each of the passages 8 having a cross-sectional shape with three apices. The outlet for passages 8 may be a circular series of passages or an annular passage. The crosssectional shape may be an equilateral, ososceles, or irregular triangle, which may have curved sides, and the nozzle may be of one-piece or two piece construction. When the latter construction is chosen, the preheat passages 16, Figs. 4, 5 are formed as slots on the inside member 10, the bore of outer member 18 forming the bases of the triangular passages.