baber/WOPTO huggingface dataset:
Patent GB-1425366-A (GB)
Title: Method and apparatus for producing periodic heating of moisture containing objects
IPC: H05B6/68
Filed: 1973-02-13
Abstract: 1425366 Automatic control of heating HUSQVARNA VAPENFABRIKS AB 13 Feb  1973 [14 Feb 1972] 6873/73 Heading G3N [Also in Divisions G 1 and H5] In the periodic heating of a moisture-containing object, switching of the heat source is controlled in dependence on changes in (i.e. the time derivative of) the humidity caused by the liberated moisture. As shown, an A.C. supplied resistance 6, whose value decreases with increasing humidity, is placed in the effluent air-stream, provided by fan (4), Fig. 1 (not shown) of a micro-wave oven (1-3), and is in series with resistor 12, the voltage across which is rectified in a negative-going sense by rectifier 15, 16, 23 to bias transistor 17 to cut off, and rectified in a positive-going sense by unit 22, 13, 14, the potentiometer 14 providing circuit sensitivity adjustment. Increasing humidity of  effluent causes the voltage across resistor 12 to increase until, via rectifier unit 13, 14, 22 and  Zener 19, a resulting positive signal is applied via resistor 20, to transistor 17 thus energizing relay coil 21, closing contacts 25 disconnecting the power supply to the oven. The power supply is restored when the current through resistance 6 is reduced, due to decrease in the moisture in the effluent air.  Indicator for changes in humidity, Fig. 2 (not shown). The indicator comprises a cylindrical temperature resistant plastics support 8 surrounded by a glass fibre hose 9 heated by bifilar silver wires (10, 11) wound over the hose and receiving the A.C.  supply. The hose is impregnated with a hygrophilic lithium chloride solution which attracts moisture from the ambient effluent but is heated by the A.C. supply tending to dry the solution out. The resistance 6 at any instant is a measure of the degree to which the solution has been dried out. Increase in humidity results, for given supply voltage, in an increase of current drawn, the current reducing again as the indicator regains hydroscopic equilibrium with the ambient conditions.
Patent GB-416354-A (GB)
Title: Improvements in the manufacture of rubber belts
IPC: B29D29/00
Filed: 1933-03-07
Abstract: 416,354. Driving - belts. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, and ARNBERG, W. T., 35, Pontonniergatan, both in Stockholm. March 7, 1933, No. 6878. [Class 80 (i).] Rubber belts are made by applying a layer of rubber to each side of a reinforcement of parallel, spaced threads, cords, or ropes 1, and compressing between grooved pressing members such as rollers 5, 6 so that each thread &c. lies in a corresponding groove. The grooved belt produced may be covered on one or both faces with a further layer of rubber to give even belt surfaces. The ropes &c. may be replaced by rubber-filled braided or woven and perforated tubes, the spaces between which may be occupied by strings of plastic rubber. The ropes &c. may be of jute, hemp, flax, cotton &c. or of metal wire. Two or more of the grooved bands may be superimposed and compressed together.
Patent GB-249143-A (GB)
Title: Improvements in vacuum electric tube devices
IPC: H01J9/385
Filed: 1926-03-12
Abstract: 249,143. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Slepian, J.). March 12, 1925, [Convention date]. Vacuum tubes; low-pressure metallicvapour apparatus.- In a mercury-vapour or gaseous discharge device an electrode, such as a grid, is held in a position away from its wall during heat treatment, and is subsequently disposed in its operative position, which may be adjacent to the envelope. An electrode may be adjusted in position in a similar manner, during operation of the device. As shown, a conically-shaped grid 6, having a resilient lead 11, is suspended by wires 8 from an anode 4. The grid is heated inductively during evacuation of the device through a tube 1<a>, and the wires are fused subsequently by passage of current so that the grid is moved by the lead 11 into contact with the envelope. Specification 222,509 is referred to.
Patent GB-497256-A (GB)
Title: Refining hydrocarbons
IPC: C10G32/02
Filed: 1937-03-10
Abstract: Impure hydrocarbons containing gums and/or gum-forming materials are treated with an anodically electrolyzed aqueous solution of an acid and are distilled off leaving the converted impurity as a gummy or resinous residue.  The hydrocarbons may be treated with a chlorinating agent simultaneously with or subsequently to the acid treatment; in this case the residue after distillation is of a rubber-like character.  In an example sulphuric acid of strength 20 per cent maintained at 40 DEG  F. is electrolyzed in the anode compartment of a cell.  Chlorine and a cracked petroleum distillate are introduced through pipes at the bottom of the anode compartment. The oil rises through the acid and is withdrawn at the top.  It is then distilled off.  The strength of the anolyte may vary from 10 to 60 per cent sulphuric acid; it may also include a phosphate or phosphoric acid, preferably orthophosphoric acid as a stabilizer.ALSO:Impure hydrocarbons containing gums and/or gum-forming materials are treated with an anodically electrolyzed aqueous solution of an acid and simultaneously or subsequently with a chlorinating agent; the hydrocarbons are then distilled off leaving the converted impurity as a rubber-like residue.  The residue may be compounded with filling ingredients such as carbon, zinc oxide, whiting, antimony sulphide pigments in the same manner as rubber and may be vulcanized with sulphur.  Emulsions thereof may be made with a salt of a fatty acid particularly one having at least 15 carbon atoms such as sodium oleate and ammonia.  Coating or impregnating compositions may consist of equal parts of triethanolamine, shellac and glue with the rubber-like material in amount 5 to 60 per cent of the mixture.
Patent GB-882982-A (GB)
Title: Improvements in or relating to anamorphotic optical systems
IPC: G02B13/08
Filed: 1958-03-05
Abstract: 882,982. Anamorphate systems. COOK, G. H., and TAYLOR, TAYLOR & HOBSON Ltd. March 5, 1958, No. 7067/58. Addition to 812,948. Class 97(1). In the optical system according to the parent Specification the axial magnification of the convergent cylindrical member is between 0.8P and 1.6P, and the axial magnification of the divergent cylindrical member is between 0.6P and 1.2P, where P is the compression or expansion ratio of the complete system. Preferably the radius of curvature in the operative plane of the outermost surface of the convergent cylindrical member is between 0.75F and 1.75F, and the radius of curvature of the operative plane of the innermost surface of the divergent cylinder is between 0.5F and 1.75F, F being the equivalent focal length of the spherical member. Each cylindrical member is as shown preferably a doublet, the Petzval curvature of the internal contact in the convergent cylindrical member being between -0.1 and -0.4 times the sum of the Petzval curvatures of the two outer surfaces of this convergent member, whilst the Petzval curvature of the internal contact in the divergent cylindrical member is between +0.1 and -0.4 times the sum of the Petzval curvatures of the two outer surfaces of such divergent member. The sum of the Petzval curvatures of all the surfaces of the spherical member, preferably lies between +0.1/F and -0.1/F. Optical data are given for the example shown and for three other examples.
Patent GB-151541-A (GB)
Title: Improvements in or relating to gas reversing valves
IPC: F23L15/02
Filed: 1920-03-09
Abstract: 151,541. Lake, W. H. March 9, 1920. Valves, reversing and like.-In a valve of the kind comprising two hood-shape members separated by a partition adapted to occupy different water seals between multiple gas passages by raising, turning, and lowering the valve, the hoodshape members comprise two separate arched casings a, Fig. 1, supported on a skeleton frame which also carries a refractory lining for the casings. The frame carries an apron m which dips into a water seal in the pan k, and the partition p between the casings is trough-shaped and adapted to contain water, the level of which may be maintained constant by providing overflow pipes in the trough leading to the pan k through the apron m. To prevent the water in either of the sealing- troughs from being exposed to the gases when unoccupied by the partition p, arms t, such as shown in Figs. 5 and 6, may be attached to the inside of the hoods and may or may not rest on the sealing troughs. The arms are hollow and communicate with the water though at the bottom of the partition p.
Patent GB-1216603-A (GB)
Title: A piezoelectric resonator
IPC: H03H9/09
Filed: 1968-02-14
Abstract: 1,216,603. Piexoelectric resonators. MURATA MFG. CO. Ltd. 14 Feb., 1968 [23 Feb., 1967], No. 7205/68. Heading HIE. The active part of a piezoelectric resonator utilizing the "trapped energy" technique is protected from an encapsulating substance by a pair of caps which enclose the electrodes but do not touch them. In the PZT resonator shown, only the part between the electrodes 8, 8<SP>1</SP> is active. The rest of the plate 7 is piezoelectrically inactive and is provided with deposited leads 9, 9<SP>1</SP>and contact pins 10, 10<SP>1</SP>. Caps 11, 11<SP>1</SP> made, e.g., of rubber, synthetic resin or metal coated with a dielectric material, are placed over the electrodes and make contact with the inactive region surrounding the electrodes. An encapsulation 12 of, e.g., expoxide or phenolic resin is then applied by dipping or moulding. The invention may be applied to multi-resonator plates.
Patent GB-290956-A (GB)
Title: Improvements in and relating to clutches, ratchets and the like
IPC: F16D41/08
Filed: 1926-11-18
Abstract: 290,956. Joseph, F. A. Nov. 18, 1926. Divided on 287,947. Drawings to Specification. Clutches, free-wheel; facilitating changing speed; gearing for stopping and starting machinery.-Relates to overrunning clutches for use on motor-vehicles, particularly as described in Specification 261,486, and provides means for facilitating changing speed and for preventing the vehicle from running backwards downhill. The coupling-device is disposed between the gear box and driven axle, and comprises a forward unidirectional clutch combined with a brake for retarding the change-speed gear-wheels, the non- revoluble brake-element being adapted frictionally to engage the driving-member of the coupling- device or a part fixed to rotate therewith. The mechanism described is identical with that described in Specifications 287,947 and 288,094 with reference to the drawing accompanying the first Provisional Specifications thereof.
Patent GB-547279-A (GB)
Title: Improvements relating to stanchions
IPC: B63B17/04
Filed: 1941-06-09
Abstract: 547,279. Fencing posts. BRADSHAW, G., and FAIRMILE MARINE CO., Ltd. June 9, 1941, No. 7290. [Class 45] [Also in Group XXXIII] A ship's deck or like stanchion consists of two or more telescopic lengths of tubing A which are connected together by short lengths of tubing B secured diametricalty through their overlapping ends A<SP>1</SP> to act both as securing bolts or rivets and as guides for horizontal rails or cables. The upper end A<SP>2</SP> of each length of tubing A is tapered as at G, and the jointing is affected as by brazing. The stanchion may be rigidly secured to a base E, or its lower end may be flattened and forked to engage pivotally a pin C fixed between two cheeks D on the base. A second pin F, chained to the base and provided with a pivoted drop - piece, passes through aligned holes in the cheeks D and a hole in the lower end of the stanchion. This lower end is strengthened by a piece of heavy gauze brazed inside it.
Patent GB-575875-A (GB)
Title: Improvements in and relating to electrical switches or circuit breakers
IPC: H01H9/46
Filed: 1944-04-20
Abstract: 575,875. Arc-rupturing in switches. COMBI, A., April 20, 1944, No. 7293. [Class 38 (v)] A circuit-breaker comprises a stationary arcing horn d connected to the fixed contact c and a second stationary horn e which diverges from the first and acts as a stop for the surface b<1> of the movable contact b when the latter is fully open. Alternatively to, or in addition to the surface b<1>, the members b, e<1> may be connected by a flexible conductor Fig. 2 (not shown). In operation, the arc formed is drawn out until contact b meets horn e, at which point the arc leaves the contacts and moves along the horns assisted, if desired, bv the use of blow-out coils.
Patent GB-100590-A (GB)
Title: An Improved Telegraph Key.
Inventor: PALMER FREDERICK
IPC: H04L15/08
Filed: 1916-05-23
Abstract: 100,590. Palmer, F. May 29, 1915, [Convention date]. Retractive switches.-The contact bar of a transmitting-key is mounted on a leaf spring and its movement controlled by a spiral spring the position of which may be adjusted. The motion of the bar is guided by an arch, through which it passes while flexibly-mounted contacts arranged on each side of the bar may be provided for double-current working. In the arrangement shown in Fig. 1, the bar 1 is mounted on a leafspring 2 and its movement controlled by a spiral spring 10 adjustably mounted on the base 4. The bar 1 passes through an arch 6 carrying adjustable contacts 8, 9. In the modification shown in Figs. 4 and 5, flexibly-mounted levers 14, 15, carrying contacts 19, 23 and 20, 24 respectively, are provided on each side of the bar 1. The contacts 23, 24 are adapted to engage alternately contacts 25, 2(i mounted on a pillar 27 connected to one terminal of a battery; while the contacts 19, 20 are adapted to be engaged alternately by contacts 21, 22 mounted on the bar 1 connected to the other pole of the battery. The levers 14, 15 are connected through their respective pillars 16, 17 to line. The travel of the bar 1 is controlled by screws 32, and the arrangement is such that currents of opposite polarity are sent to line in the two positions of the key.
Patent GB-231177-A (GB)
Title: Safety razor
IPC: B26B21/18
Filed: 1925-03-18
Abstract: 231,177. Schlussler, A. March 22, 1924, [Convention date]. Razors, safety. In a safety razor in which the blade is clamped in a bent condition between a cover plate 1 and a guard plate 9 having grooves along its longitudinal edges under the blade edges, the cover plate is formed with recesses 2 at its longitudinal edges so that when the blade is tightly clamped on the guard 9 it is in contact with the inner edges of the recesses 2 but is free from the edges 3 of the cover plate and can spring upwards; when the blade is less tightly clamped, it contacts with the inner edges of the recesses and the outer edges 3 of the cover plate and is supported at its outer edges. The recesses 2 may be formed by a plate introduced beneath the cover plate. The teeth of the guard plate may be formed so as to leave a longitudinal edge to the guard for scraping. away excess lather. The cover plate and guard may also be formed with central longitudinal re-- cesses so that the guard has longitudinal projections co-operating with longitudinal surfaces or projections on the cover plate to clamp the blade.
Patent GB-458639-A (GB)
Title: An improved decorative surface and method of obtaining the same
IPC: B05D5/06
Filed: 1936-03-13
Abstract: 458,639. Ornamenting metallic surfaces. OXVAR, Ltd., 3, Lower Regent Street, London.-(Oxford Varnish Corporation ; Detroit, Michigan, U.S.A.) March 13, 1936, No. 7577. [Class 93] [See also Group XVI] A method of producing a decorative surface comprises controlling the degree of reflectivity of a metallically bright surface by applying a substantially transparent bonding medium in the form of a clear varnish or lacquer, then applying a design of varying tonal densities relative to the metallically bright surface, and controlling the general colour effect by applying over the design a finishing coating of transparent or translucent material carrying sufficient colouring matter to subdue the light reflection from the metallically bright surface. A metallic surface 10, brightened by milling, tooling, sandblasting, or by spraying with a metal or coating with metal flake mixture, or which may be of tinned or galvanized metal, is coated with a transparent or translucent lacquer 15 which may contain dye or pigment. After the coating 15 has dried a wood-grain or other design 20 is imprinted in a translucent coloured ink by intaglio, half-tone, or offset printing. The intaglio plate may be prepared by a photographic method using a carbon resist. A top coating 25 of transparent or coloured lacquer is then applied.
Patent GB-1366962-A (GB)
Title: Containers
IPC: B65D25/20
Filed: 1973-05-07
Abstract: 1366962 Label holders; portable containers G P G HOLDINGS Ltd 7 May 1973 [18 Feb 1972] 7601/72 Headings B8F and B8D An external recessed wall portion 2 of a moulded plastics container is covered by a transparent sheet plastics cover 6 to define a label or ticket-receiving pocket and provided with an elongate aperture 4 to facilitate insertion of the ticket into the pocket only from within the container. The cover is co-planar with the container wall 1 and is secured thereto by flanges 7 snap-fastened within wall apertures 5 so that cover removal can only be readily achieved by manipulation from within the container. The recess may be located in a container side wall or lid and be of circular, polygonal or elliptical shape.
Patent GB-747448-A (GB)
Title: Improvements in or relating to electrical resistors
IPC: H01C1/146
Filed: 1954-03-16
Abstract: 747,448. Mounting terminals. WELWYN ELECTRICAL LABORATORIES, Ltd., MACE, P. C. D., and WILLIAMS, A. L. March 16, 1954, No. 7682/54. Class 38 (1). A resistor of the kind comprising a winding 12 on an insulating former 10 is provided with brass terminals, the stem 3 of each of which is pushed into the former 10 and may be cemented therein, a nichrome tape 6 spot-welded to stem 3 connecting the winding to the terminal. The resister is then coated with cement and baked, and the terminals subsequently machined both internally and externally to remove any cement and oxide. Terminal wires 14 are then soldered to them.
Patent GB-850116-A (GB)
Title: Improvements relating to the production of dyeable polymeric materials from polymerscontaining nitrile groups
Inventor: SCHOUTEDEN FERDINAND LEONARD
IPC: G03C1/795
Filed: 1958-03-10
Abstract: A polymer containing nitrile groups is treated with hydroxylamine until at least a part of the nitrile groups has reacted and the resulting product is then further treated successively with an acid and a base.  Polymers containing nitrile groups specified are those of acrylonitrile, methacrylonitrile and vinylidene cyanide and copolymers thereof with vinyl chloride, vinyl acetate, acrylic or methacrylic esters and vinyl pyridine, cyanoethylated polyvinyl alcohol and cyanoethylated cellulose. Acids specified are sulphuric, hydrochloric, phosphoric, formic, acetic and oxalic acids.  Bases specified are sodium and potassium hydroxides, hydrazine, di- and tri-ethylamine, diamino-1,2-ethane, diethyl-N1-N1-amino)-1-diamino-1,2-ethane and brucine. The polymers may be treated whilst in solution or in powder, film or fibre form. The resulting products show good dyability. Specification 833,204 also is referred to.
Patent GB-1411671-A (GB)
Title: Process for the production of polycarbonate solutions
IPC: C08G64/40
Filed: 1973-02-16
Abstract: 1411671 Polycarbonate solutions BAYER AG 16 Feb 1973 [17 Feb 1972] 7695/73 Heading C3R A process for producing a solution of a polycarbonate having a molecular weight above 30,000 comprises subjecting a solid polycarbonate solution obtained by solvent removal from a polycarbonate solution at a temperature below the melting point of the polycarbonate coupled with the application of shear energy to a solvent atmosphere of one or more solvents which are able to dissolve polycarbonates for a period of from 0.1 to 50 hours and subsequently dissolving the resulting product in a solvent. The solvent atmosphere may contain water vapour. The examples describe polycarbonates based on 4,41- dihydroxy diphenyl - 2,2 - propane, optionally with 1 mol per cent of 1,4-bis.(4<SP>1</SP>-hydroxyphenyl isopropylidene)-benzene, treated with solvent atmospheres containing methylene chloride, carbon tetrachloride, ethylene chloride, chloroform, ethyl acetate and chlorobenzene.
Patent GB-512496-A (GB)
Title: Improvements relating to the separation of solids from liquids by sedimentation
IPC: B01D21/06
Filed: 1938-03-12
Abstract: 512,496. Gravity-separation apparatus. DORR-OLIVER CO., Ltd., and BOTTOMLEY, C. D. March 12, 1938, No. 7769. [Class 46] In sedimentation apparatus a movable blade member is disposed at an angle to its path of movement for displacing material transversely, and has a leading edge and a trailing edge both in alignment with the path of movement. In the construction shown, a tank 1 is provided with radial arms 2 carrying blades 3 arranged to sweep over the bottom of the tank. Each blade 3 has a main portion inclined to the direction of movement of the blade, and leading and trailing edges 5, 6 which are parallel to the direction of movement. The innermost blades 9 have not got the trailing edges so disposed. In a modification the blades are reciprocated in linear paths. In a further modification blades joined together in pairs to form double blades of chevron shape are used in reciprocating scraping apparatus.
Patent GB-303691-A (GB)
Title: Improvements in ironing machines
IPC: D06F67/06
Filed: 1928-03-14
Abstract: 303,691. Wells, W. C. March 14, 1928. Ironing-machines with rollers rotating against concave surfaces; ironing-machines with two mangle-type rollers.- A device for stripping articles from the roller B of a Decoudun or mangle - type ironing- machine comprises a number of resilient fingers D depending from a transverse bar C and contacting with the delivery side of the roller. Each finger is adjustably and rotatably secured to the transverse bar which is rotatably secured to brackets e.
Patent GB-489794-A (GB)
Title: Improvements in or relating to washing machines for use in laundries and the like
IPC: D06F31/00
Filed: 1937-03-17
Abstract: 489,794. Washing-machines. BAILEY, B. M. March 17, 1937, No. 7839. [Class 138 (ii)] Articles to be washed are fed into the righthand or upper end of an inclined perforated open-ended cylinder 11 which is rotated within a stationary casing 12 by means of V-belts or chains 13 from a shaft 15. Helical blades 17 are provided within the cylinder to facilitate passage of the goods and they are discharged by an endless conveyer 27. Water is passed through the casing in the reverse direction to the passage of the goods and portions of the casing are stepped to confine the water at certain points. Steam is admitted by a pipe 24 and bleaching liquor and detergents by pipes 25, 26. The cylinder may be replaced by a drum of frusto-conical form with its axis horizontal. The goods being fed in at the narrower end.