baber/WOPTO huggingface dataset:
Patent GB-1344732-A (GB)
Title: Process for the preparation of tris-hydroxymethyl-phosphine oxide
IPC: C07F9/53
Filed: 1971-04-20
Abstract: 1344732 Tris-(hydroxymethyl) phosphine oxide HOOKER CHEMICAL CORP 20 April 1971 [13 July 1970] 10275/71 Heading C2P Tris-(hydroxymethyl) phosphine oxide is prepared by (1) reacting phosphine with excess formaldehyde in the presence of water at a temperature of 0‹ to 150‹ C. and a pressure greater than atmospheric, (2) treating the resulting solution with a hydroxide catalyst, and (3) stripping the hemiacetal solution obtained of excess water and formaldehyde, preferably at 50‹ to 150‹ C. and a pressure of 760 to 20mm of mercury. The amount of formaldehyde used is preferably 3 to 5 moles per mole of phosphine, and the pressure employed in the first stage is preferably 4 to 15 atmospheres. The hydroxide catalyst is preferably an alkali metal hydroxide.
Patent GB-610269-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/18
Filed: 1946-04-03
Abstract: 610,269. Optical objectives. TAYLOR, TAYLOR, & HOBSON, Ltd., and COX, A. April 3, 1946, No. 10299. [Class 97 (i)] An objective corrected for spherical and chromatic aberrations, coma and astigmatism and intended particularly for the projection of curved objects such as the images on cathoderay tubes comprises a rear member consisting of a pair of convergent achromatic doublets separated by an airspace between 0 and 1 times the focal length of the rear member and a simple front member having one surface slightly aspherical and separated from the rear member by an airspace between .4 and 1.20 times the said focal length. Data are given for one example of the doublet system shown and for four examples of the simple front member the non-figured surface R2 of which may be convex, concave or plane.
Patent GB-314607-A (GB)
Title: Improvements in braking mechanism
IPC: F16D65/22
Filed: 1928-04-05
Abstract: 314,607. Girling, A. H. G., April 5, 1928. Blocks acting on drums; band; force-transmitting mechanism; compensating for wear; indicators, applications of; personal actuation. - Expanding means for operating brakes comprises a wedge movable endwise and centrally placed between inclined surfaces parallel to its own inclined surfaces, each pair of parallel surfaces being separated by an antifriction device such as a roller or ball free to roll up both parallel surfaces. The axis of the wedge may be parallel at right-angles or at any other angle to the plane of the braking element. The angles of the parallel surfaces to the wedge axis may differ in order to obtain different rates of movement of the two ends of the brake element. The inclined surfaces of the braking element mav be adjustable. The rollers may lie in grooves or be arranged to surmount steps on the inclined planes to give a quick initial movement. The rollers B, Fig. 11, may be located in the " off " position, to which the wedge A is returned by a spring E by stops on the inclined surfaces. The inclined surfaces on the braking elements may be formed of cones on the end of plugs screwed into the braking elements for adjustment purposes or the plugs H, Fig. 11, may be inclined. In Fig. 10 the inclined members H are adjusted by rotation of nuts J. For this purpose an outside hand-wheel L may beused. A pointer M facilitates adjustment. In Fig. 11 the plugs H are formed with bevel teeth which mesh with an adjuster L. When the brake is correctly adjusted the end of the wedge A is flush with the surface N when the brake is off and a groove M is flush with the surface N when the brake is on. The rod Q operating the wedge A is connected therewith by a pivot R, which is arranged coaxial with the steering pivot in the case of a steering wheel. The parts are contained in a casing T. The reaction of the pull on the rod Q is taken by abutments F and the casing is normally held frictionally against abutments F<3> by springs S, so that the casing may locate itself between the ends of the braking elements. A spring is shown adapted to be hooked to the brake pedal in order to apply the brakes during adjustment.
Patent GB-269586-A (GB)
Title: A process and device for producing finely distributed mixtures of mutually insoluble bodies
IPC: C23C14/00
Filed: 1927-04-14
Abstract: 269,586. Polanyi, M., and Bogdandy, S. von. April 16, 1926, [Convention date]. Ointments or salves.-Finely distributed mixtures of mutually insoluble bodies are produced by vapourizing, or volatilizing the constituents by cathode atomization in an electric arc, or by heating with cathodic rays or high frequency eddy currents, mixing the vapours and precipitating the mixture on a surface maintained at a low temperature such as -50‹ to -100‹ C., the temperature of the constituents being raised to that of the least volatilizable one. Alternatively the vapours are condensed separately and alternately in quick succession on the same surface which, in the device described, is a rapidly rotating- cylinder. The process is applicable to the production of pharmaceutical preparations, such as mercury in oleic acid. In a casing a is mounted a hollow drum c adapted to be driven at a high speed, e.g. 15,000 revolutions per minute, a cooling fluid, such as liquid air being introduced by a pipe k passing through the hollow trunnion g. A valve m is provided to control the escape of the cooling medium through the other trunnion l. Two or more pipes d are provided for the entrance of the vapours to be mixed, together with a sight opening r and an opening p through which the treated material is delivered by a scraper to a receptacle q. The casing is made air-tight bv a cover f and exhausted by a pipe h, covered lubricators n, o being provided and longitudinal displacement of the drum being prevented by a disc s and a cap t screwed to the trunnion g. The rapidity of production can be increased by providing more than one pipe for each constituent.
Patent GB-677716-A (GB)
Title: Improvements relating to looms for circular weaving
IPC: D03D37/00
Filed: 1948-04-15
Abstract: 677,716. Circular looms. QUALITEX-SOC. DUNOD & CIE. April 15, 1948 [May 3, 1947; Jan. 31, 1948], Nos. 10451/48 and 10452/48. Classes 142(i), 142(ii), 142(iii) and 142(iv) A circular loom has provision for bring- ing all the warp threads to the inner shed line, thereby uncovering the shuttles. The healds E, Fig. 5, are coupled in groups between springs 31, 32, of which the spring 32 is normally anchored by a cable 34 so that its end C is stationary; the spring 31 is housed in a tube 33 operated by a shedding cam 40 and, since it is weaker than the spring 32, is normally fully extended to the limit permitted by the tube's shedding movements thus resulting in the spring 32 being stretched and relaxed. To uncover the shuttles, the cables 34 are slackened, whereupon warp threads 2 on the outer side of the shuttle are brought to the inner side by contraction of the spring 31; warp threads 2<SP>1</SP> on the inner side are not moved, the only effect of slackening the cable being to allow the spring 32 (which was in stretched condition) to relax. On re-tightening the cable 34, the warp threads resume positions determined by the shedding cam 40, which rotates continuously. The cables 34 are attached to cam-operated slides normally engaged by latches; the slides are unlatched in turn for operation by the cam to interrupt shedding progressively round the loom, and are similarly operated in turn to resume shedding. Specification 677,832 is referred to. Shuttles and races, Fig. 2.-The shuttles 6 have wheels 10 fitted with rubber caterpillar tracks running on rails 12 consisting of blades integral with the reed wires 5. The shuttles are driven by magnets on rotating arms. The Specification as open to inspection under Sect. 91 describes, Fig. 14 (Cancelled), a shuttle 6 having an oscillating finger 18 which deflects warp-threads to left and right alternately to effect shedding. It also states that before tubular fabric is cut in the loom, selvedges are formed by applying adhesive (or by soldering or welding metal fabrics). Automatic weft spool changing as the shuttles pass a gap in the warp is mentioned. This subject-matter does not appear in the Specification as accepted.
Patent GB-1506325-A (GB)
Title: Automatic chart plotter
IPC: G01C21/22
Filed: 1977-03-08
Abstract: 1506325 Course-recording apparatus STANDARD TELEPHONES & CABLES Ltd 8 March 1977 [16 March 1976] 10462/76 Heading G1F An automatic chart plotting equipment comprises a computing means adapted to receive latitude and longitude information input signals, a plotting table provided with a plotting head capable of moving in two directions, means for moving the plotting head to selected points relative to said table, means for recording in the computing means data representing the latitude and longitude of said selected points on a navigation chart placed on said table, the computing means being adapted to correlate the input signals with the recorded data and to drive the plotting head to a position on the chart corresponding to the latitude and longitude information input signals.
Patent GB-197167-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H23/04
Filed: 1922-04-12
Abstract: 197,167. Tucker, J. B. April 12, 1922. Bases.-In order to reduce the dimensions of a tumbler switch the fastening screws 4 which secure the base to the wall &c. pass through hollow screwed sleeves 3 which by means of nuts 5 secure the bridge 1 to the base. In a modification elongated holes are formed in the base and in the bridge and the fastening means for the bridge and the base while not being coaxial pass through the same holes in the bridge and the base.
Patent GB-710465-A (GB)
Title: Improvements in or relating to image-forming reflector systems more especially for x-rays
IPC: G21K7/00
Filed: 1952-04-25
Abstract: 710,465. X-ray apparatus; image-forming systems. SIEMENS-REINIGER-WERKE AKT.-GES. April 25, 1952 [May 25, 1951; Feb. 5, 1952], No. 10544/52. Class 97(1) In an image-forming reflector system consisting of two or more reflecting surfaces of revolution with a common axis of rotation, the reflecting surfaces are so arranged that all reflecting surfaces are successively met at substantially glancing incidence by each of the rays converging to form the image. As shown in Fig. 1, one focus F<SP>1</SP> of an ellipsoid of revolution E coincides with the back focus of a hyperboloid of revolution H, surfaces E and H representing reflecting surfaces and having a common axis of revolution U. Rays passing from the front focus F of the hyperboloid of revolution H are reflected at surfaces H, E and pass through the second focus F" of the ellipsoid of revolution. The surface E is a paraboloid of revolution if the image is to be at infinity. The surfaces may depart from the strictly elliptical and hyperbolic forms in order to obtain optimum correction for aberrations over a large part of the image field; examples of suitable profile curves are given. A beam of rays may be concentrated on the point F by a similar system. If X-rays are to be used, as in an X-ray microscope, the angles of incidence must be nearly 90 degrees. An X-ray tube of special form may be used.
Patent GB-324859-A (GB)
Title: Carbon paper and process for its manufacture
IPC: B41M5/10
Filed: 1929-04-05
Abstract: 324,859. Wagner, G., [Firm of]. Oct. 8, 1928, [Convention date]. Addition to 307,435. Carbon papers.-The process for the manufacture of carbon papers according to the parent Specification is modified by the application to the paper of a solution in a volatile solvent of natural or artificial caoutchouc, guttapercha, balata, or isomers thereof, together with softening-agents such as ethyl phthalate, tricresylic phosphate, oils, fats, or fatty acids, and vulcanizing agents or vulcanizing accelerators if desired, the solvent being then partially or wholly evaporated, and a layer of colour of the usual composition subsequently applied. The colour composition may be covered with a further layer of caoutchouc &c. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of natural or synthetic resins, esters, ethers, or the like, or of mixtures of these substances with the caoutchouc or the like. This subject-matter does not appear in the Specification as accepted.
Patent GB-231339-A (GB)
Title: Improvements in water-tube steam generators
IPC: F22B21/34
Filed: 1924-04-30
Abstract: 231,339. Steinm³ller, L. April 30, 1924. Controlling and moderating superheat; arrangements of superheating tubes in boiler furnaces.-The superheater v, Fig. 1, is placed between the auxiliary water tubes l and the main bank a, or between the auxiliary tubes and the furnace wall B, Fig. 6. The superheater tubes v, Fig. 7, may be positioned opposite, spaces 0 between the water tubes h' for obtaining maximum superheat, or be drawn sideways to position behind or partly behind the tubes h<1> for moderating the degree of superheating.
Patent GB-274939-A (GB)
Title: Improvements in or relating to machines for finishing or burnishing the bottoms of boots and shoes
IPC: A43D95/08
Filed: 1926-04-22
Abstract: 274,939. Pochin, F. H., Pochin, H. S., and Tomblin, T. E. April 22. 1926. Waxing-machines.- In machines for applying molten wax to shoe bottoms, there is employed a roller 1, of yielding material such as felt, of greater length internally than peripherally, a hollow shaft 2, on which the roller is threaded, a shoulder or flange 10 on the shaft, and clamping means 11, 12, between which and the flange the roller is clamped so that its core is compressed, while its peripheral part remains soft and yielding. A preferred form of roller has the shape shown in Fig. 3, and is suitable for waxing the forepart, heel breast and waist of shoes. Hot air, gas, or steam is passed through the shaft 2, and means for supplying wax from a heated wax pot to the roller are provided. Abrading, smoothing, buffing and polishing rollers may also be mounted on the machine. Specifications 13814/10 and 187,742, [Class 42 (ii), Fabrics, Treating otherwise &c.], are referred to. The Provisional Specification describes also a roller made up of felt &c. collars, between which metal, fibre, felt, cork, &c. washers are interposed. The felt collars may be recessed to allow the partial entry of the washers. Means for periodically supplying wax to the roller or rollers, comprising a, rocking feed roll or pads, and rollers comprising rubber instead of felt are also described.
Patent GB-769010-A (GB)
Title: ª -di-alkoxymethyl-ª -alkoxypropionitriles and a method for preparing the same
Inventor: TAKAMIZAWA AKIRA
Filed: 1954-04-12
Abstract: The invention comprises trialkoxy-isobutyronitriles of the formula <FORM:0769010/IV(b)/1> where each R is alkyl or aralkyl, and their preparation by heating the alkylation product of (the sodio derivative of) an a -formyl-b -alkoxy-propionitrile with an alcohol in the presence of an acidic or basic catalyst.  The alkylation product mentioned above may be one of the geometrical isomers of an a -alkoxymethylene-b  -alkoxypropionitrile or may be an a  - (dialkoxy - methylene) - acrylonitrile or a mixture of two or all three of these.  Suitable catalysts are hydrochloric acid, sulphuric acid, ammonia, alkali and alkaline earth metals and their hydroxides, alkoxides and carbonates, and alkali metal salts of weak acids (including phenols).  The products are reconverted to a -alkoxymethylene -b -alkoxypropionitriles by heating with acids under reduced pressure.  If the radicals R are different some interchange may take place during the reaction.  An inert solvent may be used. In the examples the products are obtained by condensation of b -ethoxypropionitrile with ethyl formate and alkylation of the product first with dimethyl sulphate, methyl iodide or methyl toluene-p-sulphonate and then with methanol, ethanol, butanol or benzyl alcohol or mixtures thereof.  It is also stated that R may be phenethyl.  The products are useful in the synthesis of pyrimidine derivatives, e.g. condensation with acetamidine yields 2 : 7 - dimethyl - 5 : 6 - dihydropyrimido - (4 : 5 - d) - pyrimidine, hydrolysed by boiling with water to 2-methyl-4-amino-5-acetaminomethyl -pyriminde, see Specification 772,256.
Patent GB-955729-A (GB)
Title: Anchor for concrete
IPC: E04B1/41
Filed: 1961-03-24
Abstract: 955,729. Anchor-bolts. C. I. WILLIAMS. March 24, 1961 [Dec. 16, 1960], No. 10841/61. Heading F2H. An anchor for concrete comprises a screwthreaded &c. coupling 15 and an undulating shank 10 embedded in the concrete. The undulations may be superimposed on a curved axis and may have a substantially constant pitch 16 and increase in height progressively in the direction away from the coupling 15. Instead of being in the flat plane containing the arcuate axis of the shank, the undulations may be in an arcuate plane perpendicular to the flat plane, Fig. 2 (not shown). As shown in Fig. 3, the arcuate shank may be formed with undulations of decreasing pitch and having progressively decreasing radii. A similar construction, Fig. 5 (not shown), may have undulations of constant height superimposed on a straight or curved axis.- The end of the shank opposite the coupling may be formed into an eye, and the coupling ends of several shanks may be welded to a coil 56 into which a connector 57, Fig. 6, is threaded.
Patent GB-660314-A (GB)
Title: Masking device for use in photographic processes
IPC: G03B27/28
Filed: 1949-04-25
Abstract: 660,314. Photographic printing. LINGS, J. B. (Time, Inc.). April 25,1949, No. 10970/49. Classes 98 (i) and 98 (ii). [Also in Group VIII] A masking device for use in photographic printing comprises a supporting sheet of substantially colourless transparent material for receiving on one surface a photographic transparency, a flexible sheet of transparent material coloured to prevent exposure of light-sensitive material therethrough, and a substantially transparent film of adhesive detachably securing the coloured sheet to the other surface of the supporting sheet so that any portion of the coloured sheet may be cut out and stripped from the supporting sheet. As shown, a photographic transparency 15 is placed on the glass plate of a contact printer and is illuminated from below said plate. Contacting the transparency is a sheet 10 of substantially transparent material, such as cellulose acetate, the other surface of which has detachably secured thereto by an adhesive 11 a flexible sheet 12 as of cellulose acetate, which is coloured red, for example, to prevent exposure therethrough of orthochromatic film. By cutting from this sheet the outline of the transparency or the part thereof which it is desired to print and then stripping the cut portion from the sheet 10, printing can be effected. The adhesive may consist of white mineral oil, a thin coating of carnauba wax, shellac, resin, sandarak or such synthetic resins as the vinyl or acrylic resins.
Patent GB-542965-A (GB)
Title: Improvements in and relating to screw-cutting dies
IPC: B23G5/04
Filed: 1940-07-01
Abstract: 542,965. Screwing dies. OPPERMAN, S. E., and JUNEERO, Ltd. July 1, 1940, No. 11104. [Class 83 (iii)] A screw-cutting tool, particularly for smalldiameter work, comprises a bar a on which opposed cutting threads c are formed at the central portion of a wing-shaped slot b and a bar which is riveted or otherwise secured to the bar a and is provided with a guide aperture f to ensure correct presentation of the work. The ends of the bar serve as handles.
Patent GB-527714-A (GB)
Title: Improvements relating to electrical rectifiers of the copper oxide type
IPC: H01L21/16
Filed: 1939-04-12
Abstract: 527,714. Asymmetrically-conducting resistances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. April 12, 1939, No. 11111. Convention date, Jan. 7. [Class 37] In the production of copper-oxide rectifier elements such as have a coating of nickel upon the oxide surfaces, the coated element is subjected to concentrated nitric acid, as by dipping for about 1 second, and rinsed. This is stated to result in an improved rectifying action. Specifications 521,827 and 523,858 are referred to.
Patent GB-494293-A (GB)
Title: Improvements in or relating to telephone transmitters
IPC: H04R1/22
Filed: 1937-04-19
Abstract: 494,293. Transmitters. STANDARD TELEPHONES & CABLES, Ltd., POCOCK, L. C., and LEMAN, H. S. April 19, 1937, No. 11126. [Class 40 (iv)] In a telephone transmitter of the carbongranule type comprising an air chamber enclosed between a light diaphragm and the casing of the transmitter and one or more holes in the casing whereby the air chamber is in communication with the outer air, the dimensions of the chamber and the hole or holes are so chosen that an anti-resonance is produced at a frequency approximately equal to the resonance frequency of the diaphragm and the said air chamber without the said hole or holes, and the hole or holes in the casing are covered with acoustic attenuating material. The dome-shaped electrode 3 is connected to a diaphragm 2 clamped between a ring 15 and the casing 1 by a spun-over cover 12. A metal spider 4 and a silk washer 5 are clamped to a porcelain member 6 on which is mounted a graphite electrode 7 held in position by an insulating ring 9 and a cover 10. The filling hole 19 for the granule chamber is covered by a metal cap 11. The space 20 at the back of the diaphragm, which is less than usual and has a volume of 0À095 cubic inch or less, communicates with the outer air by one or more holes 13 covered by discs 14 of acoustic resistance material, such as heavy silk. The space in front of the diaphragm and the openings in the cover plate 12 may be designed and dimensioned in a manner similar to that described in Specification 481,740. The diaphragm has a thickness of approximately 0À003 inch and the holes 13 are preferably of diameter 0À152 inch and have a depth of 0À040 inch. Specification 435,130 also is referred to.
Patent GB-293906-A (GB)
Title: Improvements in the manufacture and production of hydrocarbons
IPC: C07C5/367
Filed: 1927-03-10
Abstract: 293,906. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 10, 1927. Divided on and addition to 293,887. Dehydrogenating hydrocarbons.-Hydrocarbons obtained by cracking processes and hydrocarbons of any origin containing cycloparaffins or naphthenes are dehydrogenated with the aid of catalysts comprising oxides of the metals of the 6th group preferably with the addition of oxides of the metals of the 3rd and 4th groups or active charcoal. The process may be carried out at 450-600‹ C. in presence or absence of hydrogen, water vapour, or inert gases. The following examples are specified. (1) Cyclohexane vapour mixed with hydrogen is passed at 600‹ C. over active charcoal, which has been impregnated with potassium bichromate solution, dried and reduced with hydrogen; the product consists chiefly of benzene. (2) Hexahydrotoluene is passed in a current of nitrogen at 450‹ C. over molybdic acid mixed with 10 per cent of alumina to obtain toluene in good yield. (3) Cyclohexane. vapour mixed with hydrogen is passed at 450‹ C. over molybdic acid previously treated with hydrogen to obtain almost pure benzene.
Patent GB-376822-A (GB)
Title: Improvements in or relating to containers for liquefied gases
IPC: F17C1/04
Filed: 1931-04-16
Abstract: 376,822. Covers for valves. SOC. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE, 48, Rue St. Lazare, Paris. April 16, 1931, No. 11316. Convention date, April 17, 1930. Drawings to Specification as open to inspection under Sect. 91 of the Acts. [Class 135.] According to the Specification as open to inspection under Sect. 91 (3) (a) a safety valve of a liquefied gas apparatus is surrounded by a cap preventing deposition of moisture from the atmosphere on the valve. This subject-matter does not appear in the Specification as accepted.