baber/WOPTO huggingface dataset:
Patent GB-238143-A (GB)
Title: Improvements in artificial teeth
IPC: A61C13/10
Filed: 1925-02-24
Abstract: 238,143. Kamenetzky, I. Feb. 24, 1925. Teeth, artificial.-An artificial tooth comprises a porcelain, part, Fig. 1, having two longitudinal grooves a, a cross groove b, and a reduced part c, and a metal part, Fig. 2, having prongs a<1>, a bar b', and a band c<1>. The parts lock together as shown in Fig. 4. The grooves &c. in the tcoth may be lined with metal.
Patent GB-289593-A (GB)
Title: Improvements in overall garments
IPC: A41D13/02
Filed: 1927-02-26
Abstract: 289,593. Guthrie, M. Feb. 26, 1927. Overcoats; overalls. - An overcoat with skirt, portions capable of being wrapped around the legs of the wearer is provided with one or more vents 3 and tying tapes 4, 5 or other fastening - e l e m e n t. s arranged in vertical rows. One set of tapes 4 is arranged at each edge of the front opening of the coat and another set of tapes 5 is arranged between this edge and the vent. A waistbelt may be provided.
Patent GB-1154313-A (GB)
Title: Railway Track Lifting Apparatus
Inventor: STEWART JOHN KENNETH
IPC: E01B29/04
Filed: 1966-02-08
Abstract: 1,154,313. Lifting railway track. CANRON Ltd. - CANRON LIMITEE. 7 Feb., 1967 [8 Feb., 1966], No. 5522/66. Heading E1G. Railway track 11 is lifted by electromagnets 9 carried by a pair of beams 8 which are pivoted on trunnions 7 cast integral with the front wheels 2 of a vehicle, the rear ends of the beams being actuated by rams 15 reacting on similar trunnions 7 on the rear wheels 3. Each electromagnet 9 is of inverted W shape to embrace the rail 11.
Patent GB-180053-A (GB)
Title: Improvements in lawn mowers
IPC: A01D69/08
Filed: 1921-02-18
Abstract: 180,053. Poyser, G. W. Feb. 18, 1921. Lawn-mowers.-The ground-wheels c of a lawnmower have cast, on their inner side, rings j provided with sockets h to take the pawls g engaging the ratchet ring e on the internallytoothed driving-pinion d which operates the cylindrical cutter. Each wheel c has its sockets so cast that the pawls g, which are of fish-tail toothed form at their free ends, can point in either direction.
Patent GB-734800-A (GB)
Title: Improved linear polyesters
IPC: C08G63/06
Filed: 1953-02-27
Abstract: A linear polyester is obtained by polycondensing a mixture of 6- and 7-hydroxymethyl-1.4-benzodioxane, preferably at 200-300 DEG  C. and in an inert atmosphere or under vacuum.  The isomeric mixture is obtained by reacting protocatechuic acid with epichlorhydrin (see Group IV (b)).  The polyester can be extruded or moulded into filaments, films, tubes or other articles.  In an example, a mixture of the isomers was polycondensed at 270 DEG  C. and 0.2 mm. of Hg. for 17 hours to produce a polyester soluble in o- or m-cresol, dimethyl formamide or a 1 : 3 mixture of phenol and tetrabromoethane. The molten polyester may be extruded into fibres direct from the polycondensation vessel.ALSO:A mixture of the sodium salts of 6- and 7- carboxy - 2 - hydroxymethyl benzodioxane is obtained by reacting protocatechuic acid with epichlorhydrin in presence of sodium hydroxide according to the equation:  <FORM:0734800/IV (b)/1> <FORM:0734800/IV (b)/2> <FORM:0734800/IV (b)/3> Protocatechnuic acid is obtained by the alkaline degration of sulphite waste liquor.  In an example epichlorhydrin was slowly added to protocatechuic acid dissolved in aqueous sodium hydroxide solution, the mixture maintained at 40-45 DEG  C. for 7 hours in a nitrogen atmosphere and poured into hydrochloric acid.  The heavy oil separating was allowed to solidify into a mixture of crude 6- and 7-carboxy-2-hydroxymethyl benzodioxane.  The hydroxy acids were purified by heating them with methanol saturated with HCl to convert them into their methyl esters, saponifying the esters by refluxing with aqueous sodium hydroxide solution and acidifying with hydrochloric acid.  The oil separating out was allowed to crystallize and the product recrystallized in presence of decolorizing charcoal.  The mixture of isomeric acids was polycondensed to a linear polyester [see Group IV (a)].
Patent GB-879495-A (GB)
Title: Improvements in or relating to gear lever locking devices for motor vehicles
IPC: B60R25/00
Filed: 1960-02-17
Abstract: 879,495. Vehicle locking devices. KOLB, H. Feb. 17, 1960 (Feb. 17, 1959], No. 5695/60. Class 79(3). A device for locking the gear lever of a motor vehicle is connected to the lever 1 and has a pin 3 to engage a member 8. The lever I is pivoted at 10 to the member 8 and has a pivotal connection 14 with the gear shift tube 12. When the pin 3 is displaced axially by operation of a key 4 a wedge 17 displaces a pin 16 to engage an annular groove in the pivotal connection 14 to prevent the latter from being extracted while a conical portion' 19 on the pin separates a pair of contacts 23, 25 through an insulating member 26 to break the ignition circuit of the vehicle. In a modified construction, the pin 3 separates a pair of contacts inside the cover 6 of the steering column. The member 8 has two slots 15a, 15b for engagement by the pin 3 to enable the lever 1 to be locked in either the neutral or reverse position.
Patent GB-823438-A (GB)
Title: Improvements in or relating to photoelectric inspection apparatus
Inventor: BENTLEY LAWRENCE CRANMER
IPC: C25B1/00
Filed: 1957-02-20
Abstract: 823,438. Photo-electric inspection apparatus. U.D. ENGINEERING CO. Ltd. Feb. 20, 1958 [Feb. 20, 1957], No. 5737/57. Class 40 (3). In apparatus for detecting contaminant in a transparent container of the type in which a raster formed by a light spot on the face of a cathode-ray tube is imaged on the container base and in which the light rays pass through the container to energize a light-sensitive device which responds to variations in illumination indicating contamination encountered by the light spot, the optical system is adjustable so that containers of various sizes may be inspected by the apparatus. The raster of the C.R.T. 2, Fig. 1, is imaged on the base 4 of the bottle 5 by the fixed lens 6 and the auxiliary lens 8 which is supported on the opaque member 12 attached to the shaft 16. The shaft can be rotated by a control knob attached to the shaft 18 to bring any one of four lenses supported on the members 12, 13, 14 and 15 into the light beam thus varying the size of the raster image and the distance of its formation from the lens 6. The lens constants are calculated for a particular range of containers to provide an image of size equal to that of the base of the container and formed at a distance governed by the container height, the casing 7 can be raised or lowered to produce this distance.
Patent GB-672056-A (GB)
Title: Water-proof head gear
IPC: A42B1/02
Filed: 1950-03-07
Abstract: 672,056. Hats. EICHENBERGER & CIE. March 7, 1950 [Dec. 7, 1949], No. 5740/50. Class 63. A water-proof hat has a covering of impregnated woven fabric 1 which may be of several plies stitched together, and a layer of felt 2 united together by an adhesive and by stitching 3 in some parts which may produce a quilted effect. The crown may be of a number of pieces of fabric 4 secured by vertical stitches 5.
Patent GB-1180085-A (GB)
Title: Transparent Thermoplastic Composition of High Impact Resistance and manufacture thereof
IPC: C08F279/02
Filed: 1967-02-08
Abstract: 1,180,085. Graft copolymers. TOYO RAYON K.K. 8 Feb., 1967 [8 Feb., 1966; 23 Feb., 1966; 3 Aug., 1966; 1 Sept., 1966; 28 Oct., 1966; 8 Nov., 1966; 13 Dec., 1966(2)], No. 5985/67. Heading C3G. An impact-resistant transparent thermoplastic composition comprises butadiene rubber particles in an amount of 0À3 to 20% by weight occluding an isolated or substantially isolated copolymer, in an amount of 99À7 to 80% by weight, of at least 70% by weight of a monoalkenyl aromatic compound and an alkyl methacrylate and homogeneously dispersed in a continuous matrix composed of the said copolymer, characterized in that (i) the average size of the rubber particles is 0À15 to 0À7 Á and the butadiene rubber occludes the copolymer as spherical membranes of average thickness 0À0025 to 0À15Á and not in excess of “ of the said particle size and (ii) the difference in refractive index (#  D <SP>23</SP>) between the said copolymer and the rubber does not exceed 0À005. The rubber is e.g. polybutadiene or a butadiene-styrene copolymer. Suitable aromatic monomers are styrene, α-methyl styrene and vinyl toluene and the alkyl methacrylate is derived from a C\ to C 4  alkanol. Up to 30% of another monomer, e.g. methyl, ethyl or n-butyl acrylate or acrylonitrile may be incorporated in the copolymer. The composition is produced by a method comprising (a) dissolving the rubber in a mixture of the aromatic monomer and the alkyl methacrylate, (b) subjecting the solution to bulk polymerization in the presence of a polymerization initiator, which is soluble in the monomer and difficultly water soluble, while stirring at such a rate as to cause phase inversion of the solution and form droplets comprising copolymer derived from the monomeric mixture within an occluding membrane of butadiene rubber, the droplets being dispersed within a matrix derived from the monomeric mixture, said polymerization being effected until 5 to 35% by weight of the monomer mixture is copolymerized, (c) when necessary, mixing the resulting prepolymer dispersion with a solution of the butadiene rubber in the monomeric mixture or with a prepolymer derived therefrom, in such proportions as to introduce droplets of greater or smaller average particle size as may be required and (d) subjecting the resulting prepolymer system to an aqueous suspension polymerization, or (d<SP>1</SP>) subjecting the said prepolymer system to bulk polymerization without substantial stirring.
Patent GB-1463492-A (GB)
Title: Earthmover tyre tread
IPC: B60C11/00
Filed: 1973-02-07
Abstract: 1463492 Tyre treads DUNLOP Ltd 29 Jan 1974 [7 Feb 1973] 6007/73 Heading B7C A tread for an earthmover tyre of the L4 or L5 loader and dozer service classification (see The Tire and Rim Association Year Book 1973, page 3-03) is formed from a rubber composition the rubber of which is at least 60% styrene butadiene rubber. As shown in Fig. 6 the tread may have zig-zag transverse grooves 3 extending inwardly from each edge to define blocks 5 which join a central circumferential rib 4 of the tread. Other embodiments are disclosed (Figs. 4 and 5, not shown) which differ only in the form of the zigzag grooves. The width of the rib 4 may be not less than 10% of the total width of the tread, and each groove 3 may have a humped tie-bar 6, Fig. 3, extending across it adjacent the associated edge 10 of the tread. As viewed in plan the tread may have a "land" to "sea" (i.e. grooves) ratio between 70 : 30 and 95 : 5.
Patent GB-959632-A (GB)
Title: Improvements in or relating to methods of and apparatus for dip-soldering printed-circuit boards
IPC: B23K3/06
Filed: 1962-02-16
Abstract: 959,632. Soldering. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 16, 1962 [Feb. 20, 1961], No. 6087/62. Heading B3R. In soldering a printed circuit board having projections passing through the board, the board is brought into contact with a bath of liquid solder, a member immersed in the bath and having a large number of small apertures is brought against the ends of the projections and the board and member are together removed from the solder before the member is reimmersed in the bath. An electrically heated bath 2 filled with liquid tin-lead solder is mounted on a base having uprights 5 through which pass a hollow shaft 6 surrounding an inner shaft 8. A pair of parallel levers 9, 10 are mounted on each side of the bath, the levers 9 being pivoted to the members 5 and the levers 10 being fixed to the shaft 6. The ends of the levers 9, 10 are joined by levers 11 and the ends of the pairs of levers 9, 10 are connected by cross-rods 9a, 10a respectively and the lower ends of the levers 11 carry horizontal bars 12 grooved at 13 to carry a printed circuit board. The upright limbs 16 of two T-shaped bars 17 extend through slots in shaft 6 and are fixed to shaft 8 and at one end the cross-pieces are loaded by springs 18 and at the other end carry a pivoted cradle 19, the bottom being a steel plate 20 having a large number of apertures and a layer of solder grooves 22 in the cradle guide studs 24 on arms 23 pivoted to the arms 10, the studs being fixed to a skimmer. In operation, the board with projections from components passing through holes in the board is mounted in the grooves 13 with the levers 9, 10 in the position shown in Fig. 4. The levers 9, 10 are depressed by a knob 11a moving the board towards the solder and causing the skimmer to scrape oxide from the solder. Further depression of the knob causes a roller 34 on a rod 33 fixed to the shaft 6 to engage a cam. A switch 35 is depressed by a lever 10 to operate a motor 27 which rotates the said cam and a cam 28 co-operating with a lever 30 on the shaft 8. The first cam causes the board to be lowered into contact with the solder and then cam 28 allows the cradle 19 to lift and press plate 20 against the projections on the board. Then the board and plate lift together from the solder and finally the roller 34 leaves the first cam and levers 9, 10 lift to raise the board and the plate 20 is re-immersed in the solder. The plate 20 may be replaced by a body of steel wool in an envelope of woven steel tape and having an adhering layer of solder.
Patent GB-1098356-A (GB)
Title: Method for the preparation of azabicycloheptane derivatives
IPC: C07D487/08
Filed: 1965-02-12
Abstract: Azabicycloheptanes of formula <FORM:1098356/C2/1> OR <FORM:1098356/C2/2> are prepared by contacting at least one olefinic compound of formula R4HC = CHR5 and an azlactone of formula <FORM:1098356/C2/3> wherein each R1, R2, R3 and R4 is a hydrogen atom or a monovalent aliphatic, cycloaliphatic, aromatic or heterocyclic group; R5 is a ketonic carbonyl, carboxylic ester, nitrile, acid anhydride, diaclimide or nitro group, in a mole ratio of olefinic compound to azlactone of at least 2 to 1 at a temperature of 0 DEG to 140 DEG  C.  Novel compounds claimed are tetramethyl 1,4-diphenyl - 7 - azobicyclo - [2.2.1] - heptane 2,3,5,6-trans,trans and cis,cistetracarboxylate; 1,4-diphenyl - 7 - azabicyclo - [2.2.1] - heptane - 2,3,5,6 - cis,cis - tetracarboxylic bis - N - phenylimide and bis-anhydride; 1,4-diphenyl-2,3,5,6-tetrabenzoyl - 7 - azabicyclo - [2.2.1] - heptane; dimethyl - 1,4 - diphenyl - 7 - azabicyclo-[2.2.1]-heptane - 2,5 - dicarboxylate; 1 - (p - methoxyphenyl) - 4 - phenyl - 7 - azabicylo - [2.2.1]-heptane - 2,3,5,6 -cis,cis - tetracarboxylic bisanhydride; 1,4 - diphenyl - 7 - methyl - 7 - azabicyclo - [2.2.1] - heptane - 2,3,5,6 - cis,cis-tetracarboxylic bis - N - phenyl - imide; and dimethyl 7,10 - diphenyl - 6,6,7,8,9,10,10a-hexahydrofluoranthene - 7,10 - imine - 8 - 9 - dicarboxylate. In the process the azlactone may be prepared in situ from amino acids with primary or secondary amino groups or their N-acyl derivatives.
Patent GB-567184-A (GB)
Title: Improvements in or relating to electric light sources
IPC: H05B33/26
Filed: 1943-04-16
Abstract: 567,184. Luminescent materials. SHERWOOD, E. J., and SKINNER, G. D. April 16, 1943, No. 6113. [Class 39 (i)] In a light source utilising the luminosity of silicon or other carbide under the influence of an electric current, the carbide crystals are situated between a pair of electrodes 1 and 2, one of which is a reflector. The crystals may be embedded in an aluminium plate forming one electrode and the other electrode may be an open mesh screen of wire gauze embedded in transparent plastic material. The electrodes may be made as convex, concave, or cylindrical surfaces, and the light may be directed by louvres which may form one of the electrodes. A plate electrode may have crystals on both sides and be sandwiched between two gauze electrodes. U.S.A. Specification 2,254,957 is referred to.
Patent GB-213244-A (GB)
IPC: F16H39/06
Filed: 1924-03-11
Abstract: 213,244. Lentz Patents, Ltd., (Assignees of Lentz, H.). March 22, 1923, [Convention date]. Hydraulic transmission apparatus.-In a locomotive driven through hydraulic variable speed apparatus, the primary pump b is formed with one piston block or chamber and the secondary pump or motor c is provided with two or more chambers c<1>, c<11>. The motor shaft drives the wheel axles through spur reducing gear e, f, a layshaft h and crank-gear. The speed and direction of rotation of the hydraulic motor are determined by means of slide valves provided in the passages d, d<1>, d<11>. A shock-absorbing device is provided between the pressure and suction chambers of the gear to permit change of speed and reversing without shock.
Patent GB-642310-A (GB)
Title: Improvements in or relating to frequency discriminators
IPC: H03D3/08
Filed: 1947-03-05
Abstract: 642,310. Automatic frequency control systems. SOC. INDEPENDANTE DE TELEGRAPHIE SANS FILS. March 5, 1947, No. 6263. [Class 38 (iv)] [Also in Group XXXVI] A frequency discriminator, for deriving a voltage whose amplitude and sense correspond to the frequency deviation of a source from a normal value, comprises the combination of a high-pass and a low-pass filter, the cut-off frequency of both being at the normal frequency of the source. The filter outputs are separately rectified and combined in opposition to provide a control voltage for correcting variations in the frequency of the source. Fig. 4 shows a suitable low-pass filter, and Fig. 5 a high-pass filter, terminated at each end by their characteristic impedances Zo. The values of the series and shunt impedances of the filters are stated in the Specification in terms of the impedance Zo and the cut-off frequency. In Fig. 8, the two filters are fed in series from the output of an amplifying valve E, the first series element of each filter being omitted. The output voltage of each filter is applied to separate diode valves H, having separate load resistors R'shunted by condensers C. A voltage proportional to the frequency deviation .is taken off at the ends All, B11 of the resistors R.
Patent GB-717411-A (GB)
Title: Apparatus to maintain the liquid level in a liquid boiler at a constant value
Inventor: JAMESON JOSEPH LAMBERT
IPC: G05D9/04
Filed: 1951-03-15
Abstract: 717,411. Fluid-pressure servomotor-control systems. JAMESON AERO ENGINES, Ltd. June 16, 1952 [March 15, 1951], No. 6289/51. Class 135 A device for controlling the liquid level in a boiler 1 comprises a control valve 8 which regulates the supply of liquid to the boiler through a passage 9 and a valve operating device including a displaceable element such as the piston 5 which provides a flow passage offering substantially greater resistance to the passage of liquid from the boiler than to the passage of the vapour so that when the liquid level in the boiler reaches the open end of a passage 7 the piston 5 is quickly raised and the valve 8 is closed. As shown the flow passage is formed by the clearance 6 between the piston 5 and the bore 4 but it may be formed in the piston itself. In either case the passage is of such size that the piston 5 is not lifted by the vapour alone. The action may be regulated by a valve 14. Excess liquid in the bore 4 is led off by a pipe 15. The valve 8 is loaded in the closing direction by a rod 10 subject to the pressure of the vapour and surrounded by an oil sealing groove 12 supplied from a reservoir 13. The piston 5 may operate the valve 8 through a relay.
Patent GB-849749-A (GB)
Title: Device for the generation of artificial fog, smoke or the like
Filed: 1958-02-27
Abstract: 849,749. Influencing meteorological conditions. INVENTOR-KREDITANSTALT. Feb. 27, 1958 [Feb. 28, 1957], No. 6362/58. Class 6(2). [Also in Group VI] A fog or smoke generating device in which water is added to oil and the mixture heated on heat exchanging surfaces comprises a casing in which are two concentric, double-walled hollow cylinders arranged so that heated gas (e.g. combustion products from an oil burner) may pass first through the central space within the inner cylinder and then through the space between the inner and outer cylinders. The inner cylinder holds oil or an oil/water mixture spread on its inner surfaces and the outer holds water. Steam generated from the water enters the inner cylinder and mixes with oil evaporating therein thus forming a fog which is expelled into the atmosphere. Referring to the Figure, water enters the outer cylinder 1 via the inlet 3 and passes as steam through the nozzle 4 into the inner cylinder 2 which carries a spiral oil distributer 6 and into which oil or oil/water mixture enters via the inlet 5, the fog produced issuing from outlet 7. The gases, heated by the heat source 8 (shown as an oil burner but it is stated that electrical heating may be used) pass up the central path 9, are deflected downwards through the space 11 between the cylinders by the deflection cap 10 and at the lower end are deflected into the outer space 13 by the funnel-like boundary wall 12 from whence they pass into the atmosphere via the chimney 15. The outlet pipe 7 may accommodate the head of an aerosal reservoir or other injection means whereby other agents, e.g. anti-parasitic agents and dyes may be added to the fog.
Patent GB-1416252-A (GB)
Title: Tools and electrical components
IPC: H01R13/502
Filed: 1973-02-09
Abstract: 1416252 Hand tool handles FUTTERS (LONDON) Ltd 9 Feb 1973 6482/73 Heading B4K [Also in Division H2] In a hand tool such as a screwdriver, comprising an electrically-conductive shank member and an electrically-insulating handle member of resilient plastics material, the handle is mounted on the shank in snap-fitting engagement, such that flexure of the handle member by finger pressure can permit the shank member to be withdrawn lengthwise through the handle member, by virtue of a construction of similar type to that of the electrical connector plug shown in Fig. 1, in which a shank member 10 has a body portion 16 of hexagonal section, retained in snap-fitting engagement between shoulders 26 and 39 formed in the inner wall 18 of a resilient housing or handle member 12. By finger pressure shoulder 39 may be disengaged, permitting withdrawal of the shank member 10. Alternative means of snap-fitting engagement may consist of annular grooves and ribs or local pip projections between the engaging members, Figs. 4 and 5 (not shown).
Patent GB-245311-A (GB)
Title: Improvements in rifle cleaning devices
IPC: F41A29/02
Filed: 1925-03-10
Abstract: 245,311. Cooper, G. S. March 10, 1925. Cleaning. - The jag 4 or patch holder of a pull-through cleaner comprises a cylindrical screw-threaded body formed with longitudinal or helical grooves 5. As shown, the jag is screwed into a. socket 3 attached to a cord 1 of large diameter. The cord fits into tubular recesses in the socket 3 and in the weight 2 and is secured by cross pins 11 - - 14. In a modification, the cord is directly attached to the jag. For use in the event of the jag becoming fixed in the barrel, the end of the jag is formed with a screwthreaded hole 16 for the reception of the screwed end of a withdrawing rod.