baber/WOPTO huggingface dataset:
Patent GB-735927-A (GB)
Title: Improvements in or relating to electric amplifier arrangements
IPC: H03H7/46
Filed: 1953-06-23
Abstract: 735,927. Aerial coupling arrangements. GENERAL ELECTRIC CO., Ltd., and SMALL, G. F. June 18, 1954 [June 23, 1953], No. 17430/53. Class 40 (5). Radio-frequency energy is fed to an aerial through two amplifiers which are connected by paths differing by an odd number of quarter wavelenths to a hybrid device which combines their outputs and feeds it to the aerial. The arrangement is provided in order to reduce or remove phase distortion of the transmitted signal due to mis-match between the final amplifier and feeder, and the feeder and aerial. In a preferred embodiment the energy is fed to a first ring hybrid arrangement 3 at a point 9 from amplifier 20 and divides into two parts which are fed out at points 7 and 10 each #/ 4  away from 9 in opposite directions. The hybrid is completed by a matching resistor 23 connected at a point 8#/ 4  beyond 10 and 3#/ 4  from 7 over either path round the ring. Owing to the positioning of point 8 no energy is lost in resistor 23. The lines 15 and 17 from points 7 and 10 to amplifiers 1 and 2 respectively are dimensioned so that line 17 exceeds line 15 in length by #/ 4 . In accordance with the invention the length of the lines from 16 and 18 from amplifiers 1 and 2 to the hybrid 4 differ in length by #/ 4 . They are so arranged that the signals from the amplifiers reach points 11 and 14 of the hybrid in phase and combine in the aerial output line 22 coupled at point 13 also in phase. It will be seen that signals reflected down line 22 due to mis-match between the aerial and feeder will divide equally between lines 16 and 18 and that the portion of each that is reflected due to mis-match between these lines and the amplifiers will return to the hybrid in antiphase and will not affect output 13 but be absorbed by resistor 24.
Patent GB-255110-A (GB)
Title: Improvements in and relating to the manufacture of wooden spools
IPC: D01B1/14
Filed: 1926-07-12
Abstract: 255,110. Schweizer, E. July 11, 1925, [Convention date]. Combined turning and drilling machines.- In a machine for operating on wooden rods to form spools the stock from which the spools are to be made is fed intermittently through a rotating hollow-spindle and is bored by an axial rotating drill and shaped and cut off by rotary cutters mounted on both sides of the work. The stock a, Fig. 1, is fed by means (not shown) against a stop b vertically movable by means of a cam c, the chuck being opened by a cam-operated lever 35. The periphery of the bobbin is turned by a rotary cutter 8 mounted on a compound slide-rest 7<a>, 7<b>. The slide 7<a> is fed transversely to the lathe axis by a cam 13 and during the advancing movement the slide 7<b> is traversed parallel to the axis by an inclined guide 9 so as to produce the taper x, Fig. 4. The slide 7<a> then remains stationary while the slide 7<b >is traversed by a cam 1 and lever 12 to produce the parallel part y and finally both slides are moved by their cams to form the taper z and are then returned to their initial positions. A similar slide-rest is arranged on the opposite side of the lathe, the lower transverse slide being rigidly connected to the slide 7<a> and the upper longitudinal slide being controlled by a lever and a cam 17. The upper slide carries a spindle on which are two spaced rotary cutters which form the rims of the bobbin-heads during the return move:nent of the slide 7<b>. During the operation of the cutters a rotating drill 20, fed axially by a lever 21 and cam 22, drills the bore of the bobbin in two stages. The bobbin is finally cut off by a rotary cutter 24 driven through a universally-jointed shaft 32 and belt 33 and carried by a lever 25 controlled by levers from a cam 30. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modified machine in which the drill 20, Fig. 6 (Cancelled), is fed axially into the stock a, preferably in three stages, whilst the rotary cutting-off tool is operating, the cams being so arrangec. that the drill recedes out of the path of the cutting-off tool but remains stationary to support the work as it is severed and until grippers 39, mounted on a cam-operated arm 38, remove it. The gr.ppers transfer the work to centres 40, 41, between which it is rotated whilst the shaping cutters 8 15, 16, similar to those previously described, operate to finish the bobbin. The centres are then separated and the finished bobbin is removed by a spring ejector. In further modifications the stock may be operated upon by a planing device before entering the hollowspindle, the cutters may be angularly adjustable on the upper slides 7b, the cutters may be adapted to different shapes and materials of the work, and articles such as cylinders, rolls, bobbins &c. may be made from wood or other material. This subject-matter does not appear in the Specification as accepted.
Patent GB-717040-A (GB)
Title: Improved photographic development process and developers therefor
IPC: G03C5/30
Filed: 1951-07-24
Abstract: 717,040. Photographic development. KODAK Ltd. (Kodak Pathe Soc. Anon. Francaise, and Roman, P. A.) July 21, 1952 [July 24, 1951], No. 17495/51. Class 98(2) . A visible image is developed in an exposed photographic silver halide emulsion layer by treatment with a developing solution containing as the developing agent vanadous bromide or chloride, and optionally hydrobromic or hydrochloric acid (according to the vanadium halide used) and a trace of potassium iodide. The developer may be prepared by boiling vanadium pentoxide in hydrobromic acid, diluting with water, and submitting to cathodic reduction to reduce the vanadic bromide to vanadous bromide. The used developing solution may be regenerated' by electrolytic reduction. Cinematograph film may be developed continuously by passing it round rollers situated in a developing tank containing the developer. The developer is continuously withdrawn from the developing tank through a measuring tank, and pumped into the cathode chamber of an electrolytic cell wherein it it regenerated and returned to the developing tank from that chamber. To maintain the level of developer in the system two supply tanks containing developer rich and poor in hydrobromic acid respectively, are arranged to feed into the electrolytic cell, the joi l ll feed being controlled by an electrical contact in the cell. The individual feeds of the supply tanks are controlled by electrical contacts on a hydrometer in the measuring tank so that the density and acidity of the developer is kept constant. The measuring tank also contains a thermometer or thermostatic regulator fitted with electrical contacts which control the temperature of water sprayed onto the electrolytic cell and thus control the temperature of the developer in that cell.
Patent GB-203661-A (GB)
Title: Process for preserving flours and the like farinaceous substances
IPC: A21D4/00
Filed: 1923-07-05
Abstract: 203,661. Schoen, M. Sept. 7, 1922, [Convention date]. Preserving flour and meal.-Flour and meal are dried and packed in sealed receptacles in which the air has been replaced by inert gas such as nitrogen or carbon dioxide. The drying is effected at a low temperature, by a current of air or in vacuo, and takes place in the storage receptacles, which are provided with an opening, which is afterwards sealed, for the escape of air and moisture and the entrance of the inert gas.
Patent GB-625821-A (GB)
Title: Purification of antibiatic substances
IPC: C07H15/238
Filed: 1946-06-12
Abstract: Picric acid salts of water-soluble basic Actinomyces elaboration products are manufactured by reacting a crude concentrate predominantly composed of such an elaboration product or an acid salt thereof (preferably a hydrohalide or a salt with an aliphatic carboxylic acid containing 1-4 carbon atoms in the molecule) with picric acid and recovering the picric acid salt. The reaction may be carried out in aqueous solution at about 80 DEG  C., followed by cooling to 40-45 DEG  C. to precipitate excess picric acid and inactive picrates and then standing at about 5 DEG  C. until separation of the desired picric acid salt is complete; or the reaction may be carried out in acetone solution, the precipitate found being filtered off and the desired picric acid salt recovered from the filtrate.  The products may be purified by washing and reprecipitating from water, or preferably by dissolving in a solvent such as acetone or methanol, and, if desired, reprecipitating by the addition of a large excess of ether.  The purified picric acid salts may be reconverted into mineral acid salts of enhanced purity by treating them with a mineral acid (e.g. hydrochloric, hydrobromic, sulphuric or phosphoric acid), preferably in solution, e.g. in acetone (with direct precipitation of the mineral acid salt), methanol (in which case the mineral acid salt is precipitated by adding excess of a non-solvent for the salt, e.g. ether or acetone), or mixtures of acetone and methanol.  Examples describe the conversion of crude streptothricin hydrochloride and formate into the pure picrate and the latter into pure hydrochloride or sulphate, and of crude streptomycin hydrochloride into pure picrate and the latter into pure hydrochloride.
Patent GB-604121-A (GB)
Title: Improvements in diffusers for centrifugal type compressors and pumps
IPC: F04D29/44
Filed: 1944-09-18
Abstract: 604,121. Centrifugal pumps. BRITISH THOMSON-HOUSTON CO., Ltd., and FORSLING, B. E. G. Sept. 18, 1944, No. 17778. [Class 110 (i)] A helico-centrifugal compressor is provided with a diffuser having an outer wall 3 of spherical shape and blades which are everywhere radial to the centre o of the spherical wall. The spherical form extends from the blade inlet edges ab to the plane of and the outer wall beyond that may be cylindrical or conical and the vanes may continue to be radial too o or radial to the axis. The blades make a large angle with the axis as shown in Fig. 2. They may be of sheet material cast into the inner wall 2, or may be cast integral with the part 2 and have.radiused roots except near the inlet. The diffuser is preceded by a vaneless.space a, b, V-v. Beyond the diffuser, there is a continuation guide passage 5 having half as many blades as the - diffuser. This passage is provided in a casting which serves to unite the parts 2 and 3. The diffuser blade inlet edges may be radial to o, or shaped as shown at a, b to get a correct entry angle over the whole inlet edge. The number of blades is such' that the inter-blade passages have an approximately square cross-section and the passages have a divergence in both width and height of about 7 degrees. The pump impeller is of the kind described in Specifications 594,537 and 594,538.
Patent GB-569577-A (GB)
Title: Improvements in screw thread milling machines
IPC: B23G1/32
Filed: 1943-10-28
Abstract: 569,577. Milling screw threads. BRITISH INDUSTRIAL PLASTICS, Ltd., and MILLS, F. H. J. Oct. 28, 1943, No. 17820. [Class 83 (iii)] In a screw-thread milling-machine, wherein the thread is cut by imparting co-ordinated relative rotation and axial feed between a tool holder and the work, the tool holder 1 is rotatably mounted in bearings 5 on a compound slide 16, 17 carried by a longitudinally-moving saddle 15 and is driven through a flexible shaft 24 from a D.C. variable speed motor 11 on a slide 12 tied by a rod 14 to the saddle to move therewith. The bearings 5 are mounted for vertical adjustment on a bracket 8 carried by a member 47, Fig. 5, adjustable on the longitudinal slide 17 by a screw 48, and the slide 16 is transversely adjustable by a hand-operated screw 27. The saddle is fed longitudinally during screwing by a lead screw (not shown), driven in co-ordination with the work head 19 and an additional longitudinal feed is given to the slide 17 by cam means to give a pitch compensation when cutting threads in dies for moulding plastics &c. which shrink on cooling. For this purpose, a cam bar 29, angularly adjustable on the machine bed about a central pivot 31, has a groove 30 engaging a follower 35 on an arm 36 keyed to a shaft 37 which is rotatably mounted at one end on the saddle 15 and at the other end is slidably supported on the slide 16. As the saddle traverses, the rocking movement of the shaft 37 gives the compensating feed to the slide 17 through a splined linkage 40, backlash being taken up by a double spring connection between the slide 17 and the slide 16. Spindle-mountings.-The cutter spindle 3 is mounted in plain bearings having tapered outer surfaces secured in the housings 5 by locking rings 9 and end play of the spindle in the bearings is taken up by locking rings 10. Gauging-devices.-Gauges may be fitted to the machine bed and the saddle to give accurate dimensional recording in both longitudinal and transverse directions, particularly when cutting deep internal threads.
Patent GB-675103-A (GB)
Title: Improvements in or relating to fluid pressure operated gauges for measuring or comparing the dimensional characteristics of a work piece
IPC: G01B13/00
Filed: 1949-07-06
Abstract: 675,103. Linear-dimension gauges; indicating-apparatus. SHEFFIELD CORPORATION. July 6, 1949 [Aug. 7, 1948], No. 17848/49. Classes 106 (ii) and 106 (iv). A linear-dimension gauge, Fig. 1, comprises a gauging-head 12 with nozzles 14 on its gauging surface connected to a source 11 of fluid under pressure, and a liquid-filled pressure gauge 70 for indicating any fluid leakage between a workpiece and the gauging-head 12 as a measure of the clearance therebetween. The gauge includes an adjustable restrictor valve 39 creating a pressure drop between the fluid at the supply source 11 and that in a chamber 38 communicating with the nozzles 14, this pressure drop depending also on the clearance between the work-piece and the gauging-head 12. The pressure in the chamber 38 acts on a flexible diaphragm 48 at the base of the pressure gauge 70, the space above the diaphragm 48 being filled with liquid extending into a flexible curved tube 50, Fig. 7, having its free end 51 connected to an indicating pointer 53. Pressure changes on the lower face of the diaphragm 48 are transmitted to the liquid in the tube 50 to deflect the pointer 53. A ball-type checkvalve above the diaphragm 48 allows free movement of the liquid to the tube 50 but permits only a restricted return flow therefrom. The liquid in the tube 50 is preferably kerosine and the fluid supplied to the gauging head 12 is preferably air. The gauge 70, Fig. 7, has a front plate with a semi-circular opening 72 backed by a circular glass disc. The glass is manually rotatable about its axis and carries plus and minus signs 77 and 78 so arranged that by rotating the glass disc a positive sign 77 may be caused to appear on the right and a negative sign 78 to appear on the left of the zero position of the pointer 53, or vice-versa. The gauge 70 has a scale ring 64 on which adjustable pointers 65 may be set to show the maximum permissible tolerance in any particular gauging operation. The pivoted pointer 53 is flush with the scale ring 64.
Patent GB-963575-A (GB)
Title: A method of producing single or multilayer bodies of fibrous material containing synthetic resins
IPC: D06N7/06
Filed: 1963-05-06
Abstract: Curable prepolymers are prepared from dialkyl phthalate and other vinyl monomers.  For Example 1, dibenzoyl peroxide paste is dissolved in a mixture of dialkyl phthalate, carbon tetrachloride and methyl methacrylate. This mixture is then run into a solution of polyvinyl alcohol, a copolymer of maleic anhydride and vinyl methyl ether and potassium stearate in water, while stirring. The emulsion is heated in a nitrogen atmosphere for 1/2 hour, tert-butyl perbenzoate added and polymerization continued until it is sufficiently advanced, as indicated by the refractive index of the product, when the reaction is stopped by cooling.  In Example 2, dibenzoyl peroxide paste is dissolved in a mixture of dialkyl phthalate and methyl methacrylate. This solution is then run into an aqueous solution of polyacrylic acid and polyvinyl alcohol, while stirring. A solution of stearic acid in hexanone is added. This emulsion is then polymerized as in Example 1.ALSO:Paper containing a synthetic resin is made by adding an aqueous preparation of a curable prepolymer of diallyl phthalate to a pulp of the fibrous material, and then forming the pulp, e.g. on a paper-making machine, to form a body containing 20 to 70% by weight of resin.  The prepolymer may be a copolymer with, e.g., esters of acrylic acid of their derivatives.  It may be in the form of a suspension or emulsion, which may be stablized by surface-active substances or protective colloids, e.g. alkylaryl sulphonates, alkyl sulphates, copolymers of maleic anhydride with other vinyl compounds such as vinyl methyl ether, polymers of methacrylic acid and its copolymers with acrylamide.  Thickeners, e.g. methyl-cullulose or polyvinyl alcohol may also be used. Precipitants such as aluminium formate or sulphate or quaternary nitrogen compounds produced from dicyandiamide may be added to the pulp after the prepolymer.  A filler of large surface area, e.g. fumed silica or a silicate, may also be added.  Fillers used in the examples are: (1) TiO2 and calcium-aluminium silicate; and (2) chromium oxide and aluminium silicate.  The paper may be compounded during production by the duplex or multiplex process, the web in the middle may then have a higher resin content than the webs on the outside.
Patent GB-1368846-A (GB)
Title: Repair of moulds
IPC: B23K9/04
Filed: 1973-06-08
Abstract: 1368846 Welding; jointing FOSECO INTERNATIONAL Ltd 8 June 1973 [18 April 1972 12 June 1972] 17934/72 and 27428/72 Headings B3R and B3V In repairing a damaged (split, cracked and/or eroded) mould, particularly an ingot mould, studs are secured to the mould by drawn arc welding (e.g. using a magazine fed gun) and metal is secured to the studs such that it covers and/or fills the damaged portion of the mould. In one embodiment, studs are welded at random to the surface of the damaged portion and the latter is filled with molten metal which anchors on the studs. In another embodiment, threaded studs are welded to the mould outside the damaged portion and a metal plate is secured by nuts to the studs so as to cover the damaged portion.
Patent GB-1452049-A (GB)
Title: Process for the production of isochromans
IPC: C07D311/78
Filed: 1975-04-30
Abstract: 1452049 Isochromans INTERNATIONAL FLAVORS & FRAGRANCES Inc 30 April 1975 [1 May 1974] 17988/75 Heading C2C Compounds of the formula where R 1  and R 2  are separately H, C 1 -C 6  alkoxy or C 1 -C 6  alkyl or together are benzo, cyclopentano, cyclohexano, naphtho, mono or polyalkyl cyclopentano or mono or polyalkyl cyclohexano and R 3  and R 4  are H or C 1 -C 6  alkyl are prepared by intimately admixing compounds of the formulae and p-toluene sulphonic acid or phosphoric acid, where R 5  and R 6  are alkyl, and heating the mixture to form the isochroman. The acetal starting material may be formed in situ by reacting compounds of the formulae
Patent GB-638030-A (GB)
Title: Improved air-conditioning arrangement with automatic regulation particularly for ships, aircraft, vehicles and the like
IPC: B61D27/00
Filed: 1947-07-08
Abstract: 638,030. Air-conditioning apparatus. SOC. ANON DES ETABLISSEMENTS NEU., and DENIS, L. July 8, 1947,No. 18018. Convention date, Feb. 4..[Class 137]  An air-conditioning system, particularly for use on ships, vehicles and aircraft, comprises a cooling section in which air is compressed and is subsequently cooled, and expanded whilst doing work, and an air-heating section, having a by-pass, so that external air may be supplied thereby, to the space to be ventilated, either heated or unheated, and such air may be mixed with cooled air before admission to the space, or cooled air alone may be admitted. As shown spaces 44 in a ship are to be ventilated. Air enters the suction pipe 2 of an air-compressor 1 driven by a power unit controlled by a regulator 4. The compressed air is cooled at 7, e.g. by heat exchange with sea water, and is further compressed by a compressor 5 driven by a motor 6 which utilizes the expansion of the compressed air. Coolers 8 are arranged between the compressor 5 and the motor 6, condensed water being collected for return to the air stream at a later stage. The air leaving the motor 6 expands further in a chamber 9 having baffles 30 which remove further water from the air. The outlet of the chamber 9 is connected to the hot air system, a valve 17 determining the degree of effective connection. The hot air system comprises an air intake 38 and a fan 13 which delivers into passages 14, 16 the former having a heater 12 which is byepassed by a passage containing a damper 15. By adjustment of the dampers 15, 17 and regulation of the heater 12 and the cooling-section, any desired mixture or selection of unheated, heated, or cooled air may be admitted to the space 44. The air from the heating or cooling sections, or both, passes through a mixing chamber 31 into the space 44 and a corresponding quantity of air is withdrawn by a fan 29 through a pipe 27. A pipe 36 permits a quantity, regulable by the valve 39, of waste air to be mixed with the fresh air entering the fan 13. The condensed water is sprayed into the mixing chamber 31 either by air pressure or by a pump 32, the spray being regulated by a hygrostat 33 operating through a relay 34 on a valve 35. Alternatively, a separate water supply 351 is used, or humidification may be effected by the injection of steam. A thermostat 25 in the vent pipe 27 acts through a relay 26 to swing the damper 24 to adjust the proportions of cooled and other air entering the space 44. A manual adjustment 28 also is provided. A thermostat 40 controls the regulator 41, e.g. a steam valve, of the heater 12. Pressure in the chamber 9 is maintained constant by a member 10 which acts through a relay 11 on the regulator 4 of the power unit 3.
Patent GB-567794-A (GB)
Title: Improvements in or relating to baths for the electro-depositing of antimony
IPC: C25D5/34
Filed: 1942-07-21
Abstract: 567,794. Electrodeposition of antimony. BLOOM, M. C. July 21,. 1942, No. 18041/43. Convention date, July 28, 1941. Divided out of 559,164. [Class 41] Antimony is electrodeposited upon steel and other metals from aqueous baths containing the trifluoride and a soluble fluoride. derivable from ammonium hydroxide (e.g. ammonium fluoride). Copper, mercury, and tellurium fluorides may be present to prevent " treeing," decrease the grain size of the deposit, and increase the throwing power of the baths. Anodes of antimony or inert anodes may be employed. The compositions of three baths are set out in the Specification.
Patent GB-320851-A (GB)
Title: Improvements in brake mechanism
IPC: F16D51/56
Filed: 1928-06-22
Abstract: 320,851. Crockett, R. A. June 22, 1928. Blocks and shoes acting on drums.- A brake comprises a series of shoes arranged in two or more parallel planes around the brake drum capable of limited peripheral displacement so that when applied to the drum, each shoe abuts on and applies pressure to the adjacent shoe. Two groups of shoes 4, 5, 6 and 7-9 in parallel planes are shown, each shoe being pivoted to the adjacent ones except that one end of each of the end shoes 4, 9 is free. The two groups of shoes are connected by a pin 16. When the cam 13 is turned, a radially movable plunger 14 engages projections 19 on the end shoes 4, 9 to force these against the drum. Each shoe then has a servo-action on the next shoe, a projection 17, 20 on one or the other of the end shoes according to the direction of rotation of the drum, abutting on a fixed stop 18. The inclination of the faces of the stop 18 is such that the reaction thereof on the end shoe acts to force this shoe against the drum.