baber/WOPTO huggingface dataset:
Patent GB-616611-A (GB)
Title: Improvements in push-button electric switches
IPC: B60Q5/00
Filed: 1946-09-10
Abstract: 616,611. Press-button retractive switches. FORD MOTOR CO., Ltd. Sept. 10, 1946, No. 27135. Convention date, Oct. 20, 1945. [Class 38 (v)] A transparent horn button 29 having a contrasting lining 30 and situated in the hub 22 of a steering wheel 24, is urged outwardly by a shaped rubber spring 41 located in a dished metal lining 27 having bayonet slots 39 which retain the button by its integral radial lugs 36. A contact element 48 connected to an insulated horn lead 52 is gripped by the spring 41, and a contact flange 51 engages the earthed steering shaft 10 when the button is depressed, flexing the disc portion 43 of the spring. The button can be further depressed to disengage the lugs 36 from locking slots 40 and rotate them to the open ends 38 of the slots 39 for removing the button, which action requires considerable pressure in order to flex the conical portion 45 of the spring.
Patent GB-187932-A (GB)
Title: Improvements in and relating to photographic developers
IPC: G03C5/305
Filed: 1921-04-18
Abstract: 187,932. Marks, E. C. R., (Daylight Film Corporation). April 18, 1921. Developing; photo-mechanical printing-surfaces.-Relates to the production of a surface capable of use as a transfer printing plate as described in Specification 187,638, and consists in the use of potassium iodide in the developer to control the degree of contrast in the image. A developer is also described containing both potassium iodide and sodium sulphite. The process is used for producing copies of Kinematograph films, and in the case of a series of exposures taken under different light conditions different amounts of the iodide are used in the developer for the different sections to produce uniform gradations.
Patent GB-1042427-A (GB)
Title: Process for improving and finishing cellulose textile materials and improved textile materials manufactured in accordance with the aforesaid process
IPC: D06M13/11
Filed: 1964-07-01
Abstract: Textile materials made from natural or regenerated cellulose fibres alone or in admixture with synthetic fibres are creaseproofed by subjecting them to a cross-linking reaction in the dry state and subsequently subjecting them to a formalization treatment with an aqueous medium containing formaldehyde at a temperature not above 35 DEG C.  The cross-linking agent used for the dry cross-linking reaction may be an aldehyde, e.g. formaldehyde and glyosol, an acetal, e.g. ethylene, glycol acetol, a polyepoxide, e.g. glycol diglycidyl ether, a vinylsulphone, bis-hydroxyethylsulphone, a halohydrin or an N-methylol compound, e.g. dimethylol ethylcarbamate. The textile material may be impregnated with an aqueous bath containing the cross-linking agent and a catalyst and if desired optical brighteners, dyes and softeners, e.g. polyethylene emulsions, dried and heated.  Prior to heating the textile material may be subjected to a mechanical deformation, e.g. calendering.  The cross-linking agent may be applied to the textile material in a non-uniform manner in the form of a pattern by printing or spraying and in combination with dyeing operations colour effects obtained. The formalization may be carried out using an aqueous solution containing formaldehyde, polymers of formaldehyde or other formaldehyde-yielding substances, e.g. N-methylol compounds, and having a pH value of less than 5.  The formalization treatment may be carried out in the presence of organic solvents or compounds capable of binding water to form hydrates.  The formaldehyde may be used in combination with colourless or colouring substances with which it is capable of forming N-methylol compounds.  The solution, which may also contain dyes, optical brighteners and finishes, may be applied to the textile material by padding and the impregnated material then rolled up and left at room temperature for some hours, washed and dried.  The solution may also be applied in a washing machine.  The process may be used for fixing yarn helices in the manufacture of textured yarns.
Patent GB-707673-A (GB)
Title: Improvements relating to the construction of laminated magnetic cores
IPC: H01F41/02
Filed: 1951-11-20
Abstract: 707,673. Transformers and inductors. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 20, 1951 [Nov. 24, 1950], No. 27216/51. Class 38 (2) Separate magnetic laminar inserts having their grain orientated substantially in the mean direction of the natural flux path form the corner joints of a magnetic core of grain orientated magnetic steel laminations whereby to reduce noise and losses which would otherwise result from the flux travelling transversely to the grain at such corners. As shown, in diagonally opposite comers of the top layer of the core, leg and yoke laminations 1, 3 and 2, 4 are joined by inserts 5 in each of which the grain it at 45 degrees to both abutting leg and yoke laminations, while the remaining joints are mitred. The joint pattern is reversed in each adjacent layer. The outside corner of each insert, where little flux travels, is cut off to leave a bevelled edge 6. In modifications, the mating edge 8, 9 between each insert and either a leg or yoke lamination may have saw-tooth serrations, which may be resistance welded as described in Specification 295,281, [Class 83 (iv)]. In this case all corner joints would have inserts, and the saw-tooth joints would be staggered in adjacent layers. The insert may alternatively be triangularshaped, the edge 6 extending between the mating edges of the insert ; or the joint between the insert and either the leg or yoke lamination may be other than perpendicular to the longitudinal edge of such lamination.
Patent GB-717461-A (GB)
Title: Improvements in and relating to composite threads or yarns comprising synthetic filaments
IPC: D02G1/02
Filed: 1952-10-29
Abstract: 717,461. Yarns and threads. FILATURES ET MOULINAGES DE L'ARDECHE FIMOLA. Oct. 29, 1952 [Oct. 31, 1951], No. 27237/52. Class 120(3) Composite threads are produced from synthetic filaments, e.g. those of superpolyamides, by winding, by a wrapping operation, one synthetic filament, which is either entirely free from twist or has only a slight twist of the order of 20 turns per metre, about another synthetic core filament equally free from twist and of the same or different diameter, this wrapping operation which is effected by the aid of a hollow shaft through which passes the core filament and on which the wrapping filament is wound and off which it is slid on to the core filament, giving twist only to the wrapping filament and resulting in it not being drawn tight on the core filament: the assembly is then subjected to slight twisting in the opposite direction to that given to the wrapping filament during the wrapping operation, this reverse twist being associated with alternating effects of tension and release to produce sliding of the wrapping filament on the core filament and thus allowing the wrapping filament to form knops or curls about the core filament which remains straight. The composite thread may be assembled with another such thread or with a single filament and the assembly slightly twisted in the same direction as the twisting which follows the wrapping operation. In its final form, the yarn or thread is stabilized by thermal treatment.
Patent GB-1262958-A (GB)
Title: Bread flavor concentrate
Inventor: BUNDUS ROBERT HAROLD
IPC: A23L27/24
Filed: 1969-05-29
Abstract: 1,262,958. Bread flavour. BEATRICE FOODS CO. 29 May, 1969, No. 27336/69. Addition to 1,130,118. Heading A2B. [Also in Division C6] The process of preparing a synthetic bread flavour described and claimed in the Parent Specification is improved in that the lactose concentration of the whey is reduced to a value not exceeding 1% by weight prior to the addition of yeast, as by diluting the whey with water (1:10) or crystallising out the lactose. The remaining lactose in the whey may be converted to lactic acid by means of Streptococcus lactis or other specified species of micro-organisms. The bread flavour-inducing yeast must be one that can grow on lactic acid, e.g. Saccharomyces cerevisial or Saccharomyces unisperum.
Patent GB-384256-A (GB)
Title: Improvements in and relating to rotary piston compressors
IPC: F04C27/00
Filed: 1932-10-03
Abstract: 384,256. Rotary compressors. SWISS LOCOMOTIVE & MACHINE WORKS, Winterthur, Switzerland. Oct. 3, 1932, No. 27390. Convention date, Oct. 1, 1931. [Class 110 (ii).] Means for sealing the working clearances in a rotary compressor with outwardlysliding vanes 2 comprise grooves 4, 5, in the end walls, and longitudinally in the casing where the rotor 3 is nearest the casing 1, respectively. These grooves are filled with oil or grease from a container 6 fed through passages 7, 8, 9 to the grooves. For a compressor the grooves pass on the delivery side of the shaft, Fig. 1, but for a vacuum pump the groove, or grooves, pass on the suction side of the shaft. A ring groove, connected to the grooves 4, may surround the shaft.
Patent GB-603363-A (GB)
Title: Improvements relating to hydraulic accumulators
IPC: F15B1/10
Filed: 1945-10-18
Abstract: 603,363. Hydraulic accumulators. ELECTROL, Inc. Oct. 18, 1945, No. 27421. Convention date, Oct. 27, 1944. [ Class 69 (ii)] A gas-loaded accumulator comprises a cylinder 10 formed by two cup-shaped members 11, 12 telescopically screwed together, the member 11 being provided with a liquid inlet port 14 and the member 12 with the gas inlet opening 15 which is arranged to accommodate a flanged base 18 that secures an expansible and compressible metallic bellows 19 to the cylinder. To prevent damage to the bellows 19 due to variations in pressure the free end thereof carries a valve plate 22 into which is fitted an annular resilient ring 24 that co-opsrates with the seating 11c to seal the liquid inlet 14 ; upon expansion of the bellows 19 liquid is trapped within the space formed between it and the cylinder 10. The valve plate 22 is also adapted to engage a resilient ring 25, projecting from the upper edge of the cylinder 12, to limit the compression of the bellows 19 when excessively high liquid pressure prevails or preloading is desired.
Patent GB-306056-A (GB)
Title: Improvements in or relating to wireless receiving sets
IPC: H05K9/00
Filed: 1927-10-15
Abstract: 306,056. Dicker, S. G. S., (Naamlooze Vennootschap Philip's Gloeilampenfabrieken). Oct. 15, 1927. Receiving - sets, construction of.-A wireless receiving set is arranged in a cabinet separated by a partition into two parts one of which contains the tuning elements and the other the valves and non- adjustable components; and the tuning compartment is subdivided by one or more transverse partitions arranged to screen from each other the tuning-elements of different stages. Fig. 1 is a front elevation of the set with the front wall broken away, and Fig. 2 is a plan with the cover removed. The casing is divided by a horizontal partition 3, the upper part containing the adjustable tuning elements, and the lower part the valves and other components. A detector and an output valve are plugged into holders 19, 20 with their axes horizontal, and a high-frequency amplifier is mounted on the left-hand side of the lower compartment with its axis horizontal but at right angles to the other two. The upper compartment is divided into two screened sections by a vertical metal wall 4, one section housing the tuning-condenser 7 and a toroidal coil 8 forming the grid circuit of the first valve, whilst the other section contains the tuning-condenser 9, coils 10, 11 for short and long waves and reaction coil 12 associated with the detector grid circuit. The condensers are controlled by knobs 25, 26 at opposite sides of the set connected to friction-wheels which operate the moving vanes and the indicating- drums 24. The graduations are visible through windows P, S in the upper sloping portion 6 of the front wall. The reaction coil 12 is adjusted by turning a knob 27 on a shaft passing through the hollow spindle of the condenser 9. A knob 28 on the opposite side regulates volume by controlling a rheostat in the filament circuit of the high-frequency valve. The wave-length range is controlled by a switch arm 34 pivoted at 35, Fig. 5, to the central wall 4 and projecting through a slot 45 in the case. The arm carries a spring pin which snaps into holes in a fixed sector 36. Members 38 secured to opposite sides of the arm 34 by a bolt 40 cooperate with contact members 39 in the respective compartments to cut in or out the sections of the coils 8, 10, 11. In its extreme position, the switch 34 interrupts the filament supply to the valves.
Patent GB-815624-A (GB)
Title: Improved means for automatically controlling the supply valve of sprayer systems forbelt conveyors
IPC: B65G69/18
Filed: 1956-09-08
Abstract: 815,624. Fluid-actuated valves. MARSHALL, C. B., and MARSHALL, C. Sept. 2, 1957 [Sept. 8, 1956], No. 27539/56. Class 135. A valve 4 controlling the supply of water or other liquid to a sprayer situated above a conveyer belt for use in mines or quarries is arranged to be opened, against a spring, by a piston 8 which is moved in response to the transfer of oil by a gear pump 10 from a reservoir 9 to the right-hand side of the piston, the pump being driven by a pulley 17 which is situated below the conveyer belt in such a position that the belt makes contact with the pulley only when it is deflected downwardly by the weight of the material being conveyed. Thus, should the belt stop or remain running without carrying any material the pump is not driven and the piston 8, which has clearance in its cylinder, is urged to the right by a spring 13 to allow the valve to close. The housing containing the valve, piston and pump is carried by an arm which is spring-loaded so that excessive pressure is not applied to the pulley when the belt carries its maximum load. An adjustable stop determines the position to which the housing is urged by its spring loading.
Patent GB-1237436-A (GB)
Title: Fungicidally active 1,3,4-thiadiazoles
IPC: C07D285/125
Filed: 1968-06-10
Abstract: 1,237,436. 1,3,4-Thiadiazoles. SCHERING A.G. 10 June, 1968 [9 June, 1967], No. 217558/68. Heading C2C. [Also in Division A5] Novel 1,3,4-thiadiazoles having the general formula in which R and R 1  each represents an alkyl group that may be halogenated are prepared by treating a compound of the general formula in which R and R 1  are as defined above with an oxidizing agent at a temperature within the range of 10 to 120 C. The oxidizing agent may be hydrogen peroxide, a percarboxylic acid, potassium permanganate, nitric acid or chromic acid. The reaction may be carried out in a solvent such as acetic acid and acetone or acetic acid and aqueous sulphuric acid.
Patent GB-880848-A (GB)
Title: Improvements in or relating to optical objectives
Inventor: MERIGOLD PETER ARTHUR
IPC: G02B13/04
Filed: 1959-08-12
Abstract: 880,848. Inverted telephoto objectives. RANK PRECISION INDUSTRIES Ltd., [trading as TAYLOR, TAYLOR & HOBSON.]. Aug. 11, 1960 [Aug. 12, 1959], No. 27586/59. Class 97(1) An optical objective of the inverted telephoto type is corrected for spherical and chromatic aberrations, coma, astigmatism, field curvature and distortion, and comprises a divergent front member separated by a large axial air space lying between 0.8F and 1.4F (where F is the equivalent focal length of the complete objective) from a convergent rear member having four components, of which the first (counting from the front) is a simple convergent meniscus component with its surfaces convex to the front, the second and fourth are convergent doublet components and the third is a simple biconcave divergent component, with the diaphragm between the third and fourth components, the numerical values of the equivalent focal lengths f F  of the divergent front member and f R  of the convergent rear member lying respectively between 2.5F and 5F and between 0.8F and 1.4F, whilst the axial air separations between the second and third components and between the third and fourth components of the rear member lie respectively between 0.04f R  and 0.055f R  and between 0.075f R  and 0.2f R , the radius of curvature of the front surface of the divergent third component of the rear member lying between 0.75f R  and being less than one-sixth of that of the rear surface of the doublet second component of the rear member; the mean refractive index of the material of the rear element of such doublet second component exceeding that of the front element thereof by between 0.025 and 0.075. Optical data are given for three examples of the objective shown, in one of these examples, the front surface of the doublet rear component of the rear member being aspherical.
Patent GB-647940-A (GB)
Title: Improvements in or relating to the manufacture of organo-halosilanes
IPC: C07F7/12
Filed: 1947-07-22
Abstract: Resinous polymers are obtained by oxidizing under mild conditions organo silicon compounds of the general formula <FORM:0647940/IV (a)/1> wherein R represents an alkyl radical having from 10 to 12 carbon atoms inclusive and X is a halogen atom.  The hydrogen atom is displaced by oxygen with the resultant formation of oxygen linkages between silicon atoms.  Siloxanes are obtained by hydrolysing organo silicon compounds of the above general formula. p   Specification 647,530, [Group IV (b)], as open to inspection under Sect. 91, refers to resinous polymers and siloxanes derived from organo silicon compounds of the above general formula, wherein R represents an alkyl radical containing at least 10 carbon atoms, and alkyl groups containing up to 30 carbon atoms are mentioned. This subject-matter does not appear in the Specification as accepted.ALSO:An alkyl dihalosilane of the general formula <FORM:0647940/IV (b)/1> wherein R represents an alkyl radical having from 10 to 12 carbon atoms inclusive, is prepared by reacting the corresponding alkyl magnesium halide with its molecular equivalent or more of a trihalosilane in the presence of an ether.  The reaction product may be fractionally distilled to recover the desired silane.  The reaction may be carried out at below room temperature during the addition of the Grignard reagent.  Suitable alkyl magnesium halides mentioned are decyl magnesium bromide and chloride, lauryl magnesium bromide and chloride and dodecyl magnesium bromide. Trichloro-trifluoro and tribromo-silanes are mentioned as suitable silanes.
Patent GB-750391-A (GB)
Title: Improvements in or relating to the brush gear of mechanical road sweepers
IPC: E01H1/02
Filed: 1950-11-13
Abstract: 750,391. Road sweepers. DEIGHTON'S PATENT FLUE & TUBE CO., Ltd., and RIDDELL, L. H. Nov. 22, 1951 [Nov. 13. 1950], No. 27625/50. Class 107. A check mechanism to control the downward travel of a counterbalanced road sweeping brush whilst not impeding its upward vertical movement comprises a spring-loaded plunger 1 in a housing 2 carried by an arm 7 pivoted to a fixed part 3 of the machine frame for movement by the toggle mechanism 12 by a lever 13 in the driver's cab.. The plunger when in the full line position prevents the counterweight arm 14 from rising, and thus the brush shaft 17 is prevented from falling, and letting the brush dig into the surface being swept. The spring- tension is adjustable by screwing the housing into, or out from, a screwed hole in the arm 7.
Patent GB-538012-A (GB)
Title: Electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs
IPC: H04N1/60
Filed: 1939-10-11
Abstract: 538,012. Copying coloured photographs &c. KODAK, Ltd. Oct. 11, 1939, No. 27667. Convention date, Oct. 11, 1938. [Classes 40 (iii) and 40 (v)] In an electrooptical system for reproducing multicoloured originals, picture signals corresponding to the intensity of one or more colours are modified in intensity in accordance with an exponential function of the intensity of the picture signals corresponding to at least one other colour, e.g. by connections between the amplifiers of the three reproducing circuits. Fig. 1 shows two channels for the blue and green signals. Each channel includes a colour filter 110, photo-electric cell 111, linear amplifiers 112, 114, an exponential amplifier 113 (or other electrical device whose output is a power function of its input), and a light-valve 115. The output of the green amplifier 112 G may be connected via 116 or 117 to control the blue amplifiers 112B or 114B. Similarly the output of the green amplifier 114G may be connected via 118 or 119 to the same blue amplifiers. The exponential devices 113 may comprise resistances 127, 128, Fig. 2, and copper-oxide rectifiers 129 arranged as shown. Numerous alternative arrangements of the exponential devices and the linear amplifiers are described whereby the intensity of the signals in one channel may be varied in a complex manner depending on the intensities in the same or other channels. The devices 116 ... 118 may comprise rectifiers and resistances and be so connected as to produce " subtractive " or " divisional " effects. Specifications 488,835 and 538,013 are referred to.
Patent GB-687088-A (GB)
Title: Improvements in the manufacture of insulated electric conductors
Inventor: HOLLINGSWORTH DOUGLAS TAFT
IPC: H01B7/16
Filed: 1950-11-14
Abstract: 687,088. Cables. GLOVER & CO., Ltd., W. T. Nov. 13, 1951 [Nov. 14, 1950], No. 27748/50. Class 36. A machine for making a cable consisting of a conductor enclosed in a metal tube and insulated from it by a powder, for example magnesia or talc, comprises a ram 1 which works in a cylinder 2 and a member 4 having a conical part 7, a cylindrical part 8 and a tapering part 9. The ram has an axial passage through which the conductor 12 can be drawn. The enclosing metal tube is made from a metal strip 21 drawn from a bobbin 22. The strip first passes over a tension device 23 and a roller 24 and is then shaped by partial bending in a device 25. It then enters a space 6 between the part 7 and an outer member 5 which cause the edges of the strip to approach one another. Before the strip is completely closed it passes below an opening 11 leading to a hopper 13 containing the filling powder a certain quantity of which falls through the gap between the edges of the strip. The ram in its forward movement closes the opening 11 and compresses the powder round the conductor 12. The edges of the strip are finally brought together as it passes between the tapering part 9 and a member 14, the edges being soldered or otherwise joined by a device 15. The conductor, tube, and filling are drawn by a device 17 through a die 16 to reduce the diameter. The ram is reciprocated by a double acting piston and cylinder device 27. According to the Provisional Specification the ram is moved by an arm projecting through the gap between the edges of the strip and connected to a motor through a spring coupling. In addition to its normal reciprocation the ram may be given a small rapid reciprocation by inserting a pneumatic hammer between the motor and the ram.