baber/WOPTO huggingface dataset:
Patent GB-591738-A (GB)
Title: A tool for localised electric high frequency heating of insulating materials
IPC: H05B6/62
Filed: 1945-05-12
Abstract: 591,738. Dielectric heating. BRITISH INSULATED CABLES, Ltd., QUAYLE, J. C., and JONES, P. May 12, 1945, No. 11969. [Class 39 (iii)] In a tool for spot heating insulating materials by dielectric losses, a central conductor 8, 9 and a barrel 1, 3 carried by a handle or other support 2, constitute two telescopic, co-axial conductors which are connected to a high-frequency electric supply, e.g., 1,000-10,000 megacycles per second, and form at one end two concentric electrodes 23, 38 to be pressed on the work, whereupon the tool telescopes against the action of a controlling resistance such as a dashpot 33, so that the effective electrical length of the barrel reduces and passes through one or an odd multiple of quarter of the wavelength of the electric supply. At this value the electric stress in the work is a maximum. Conveniently, the barrel has an initial length greater than one or an odd multiple of quarter of the wavelength by less than quarter of the wavelength, and.telescopes through approximately quarter of the wavelength. In the example shown, the barrel comprises telescopic elements 1, 3 guided by metal collars 4, 6 and by a piston 5 carried by the element 3. The ends of a metallic bellows 31 containing oil are closed by the piston 5 and the wall 32 of an air chamber 30 into which the oil can flow through an annular plug 35. Thus different plugs can be used to regulate the rate of telescoping of the tool. The oil can return through a discharge valve 37 as the tool returns to its normal length. The central conductor comprises an element 9 slidably received in an element 8 which is fixed to the element 1 by an insulating spider 12 having arms extending through slots 14 in the element 3. Screens 41 for the slots 14 are carried by the element 1 in electrical contact with the element 3. The element 9 includes the electrode 23 which projects beyond the electrode 38 and retracts, on engaging the work, against the action of a spring 21. A spring 18 between insulating annuli 11, 19 acts to return the tool to its normal length. The high-frequency supply is connected to co-axial conductors 24 and 29 attached respectively to the elements 8 and 1. The conductor 24 extends through apertures in the elements 1, 3. The mean diameter of the electrode 38 is preferably one quarter of the wavelength, e.g. 2 inches..The ratio of the diameters of the adjacent electrode surfaces may be 2 : 1.
Patent GB-566565-A (GB)
Title: Differential mechanism
IPC: F16D41/00
Filed: 1942-11-30
Abstract: 566,565. Differential gearing. THORNTON TANDEM CO. Nov. 30, 1942, No. 11993/44. Convention date, June 2, 1942. Divided out of 563,289. [Class 80 (ii)] An axle differential for two opposed shafts 10, 11, comprises a pair of driving clutch members 16,16, with teeth 19, a pair of driven clutch members 17, 17, each having clutch teeth 20 and clutch disengaging cam teeth 21, and a pair of clutch disengaging members 18 with cam teeth 18<1> engaging the cam teeth 21, the said cam teeth 21 being curved in a radial direction so that the line of tooth contact is near the centre of the cam teeth whereby chipping at the edges of the teeth is prevented and friction between the cam teeth is reduced during clutch engagement and disengagement. The clutch members 16, 16, are driven by a housing 12. If one shaft tends to overrun the camming action between the corresponding cam teeth 18, 21, causes disengagement of the corresponding clutch teeth 19, 20.
Patent GB-978079-A (GB)
Title: Improvements in and relating to machines for the manufacture of cigar bunches
IPC: A24C1/02
Filed: 1961-04-04
Abstract: 978,079. Cigar-making machines. KONINKLIJKE VEREENIGDE TABAKSINDUSTRIEEN MIGNOT & DE BLOCK N.V. April 4, 1961 [March 31, 1960], No. 12030/61. Heading A2C. Fingers 34 projected against spring action from a rotary cylinder 32 by a cam 36 compress filler tobacco from a hopper 30 into a shaft 29, the drive for the cylinder 32 being through a differential gear the carrier 38 of which is linked at 37 to the cam and is free to turn under the combined effect of torque reaction and a spring 40 as to adjust the cam to always release the fingers 34 when a predetermined pressure on the tobacco is reached. Compressed tobacco forced from the shaft 29 is cut off by a knife 25 and falls to a rolling apron 8 (or rollers) for bunch forming. In a modification, the differential gear is omitted and the fingers are released directly by the tobacco pressure acting to spring them out of retaining detents, the cam being stationary. There is a further cam acting to retract the fingers positively if necessary.
Patent GB-181907-A (GB)
Title: Improved construction of attache cases and the like
IPC: A45C3/02
Filed: 1921-04-27
Abstract: 181,907. Burch, J. B. April 27, 1921. Hand-bags.-The front, top, or bottom and back of the lid and body of an attachÚ case or the like are each formed from one piece of leather, the top and bottom B, B<1> being left flexible and the front and back portions A, A<1>, C, C<1> being stiffened. The end portions F, F<1>, G, G<1>, are stiffened and slightly skived along one side H to form right-angled unstiffened portions which overlap and are secured to the flexible top and bottom, the upright edges I being secured to the edges of the front and back portions.
Patent GB-761907-A (GB)
Title: Improvements relating to electrical rectifying means
Inventor: HENDER BERKELEY STEPHENS
IPC: H02M7/06
Filed: 1954-04-27
Abstract: 761,907. Rectifying. CHLORIDE ELECTRICAL STORAGE CO., Ltd. April 21, 1955 [April 27, 1954], No. 12113/54. Class 38 (2). A rectifying system comprises two rectifiers 3, 4 connected in series aiding relationship, supplied respectively from the secondary windings of two similar transformers T<SP>1</SP>, T<SP>2</SP> the primary windings of which are energized in series, one being reversed so that the rectifiers short-circuit the secondary windings across which they are connected in alternate halfcycles. The full-wave rectified output may be used in charging a battery 5 connected as a stand-by across D.C. source 6 supplying a load at terminals 7, 8. The rectifier supplies only sufficient voltage to boost the voltage of source 6 to a value at which it can charge the battery. Current supplied to the load from battery 5 flows directly through the transformer secondary windings. Control by variable or fixed resistors, capacitors and inductors or by biasing windings on the transformers is referred to. Vibrating reeds with co-operating contacts may replace or assist the rectifiers.
Patent GB-517415-A (GB)
Title: Improvements in electrochemical treatment of metal
IPC: C25F1/04
Filed: 1938-04-22
Abstract: 517,415. Electrolytic pickling of metals. BLAUT. S, J., and LANG, H. M. April 22, 1938. No. 12128. [Class 41] Scale is removed from nickel or alloys containing nickel or chromium such as stainless steel, nickel silver, high speed steels containing in addition tungsten, vanadium and molybdenum &c. by subjecting the metal as anode to electrolytic treatment in a bath of sulphuric acid, sufficiently concentrated to develop passivity on the surface of the metal. Sulphuric acid of 30 to 80'per cent. strength by volume may be used. The bath may contain 2-20 per cent. of commercial concentrated hydrofluoric acid. Current density of 75-200 amps. per sq. ft. may be used. The metals after treatment may have a bright satin or etched surface. A small addition of nitric acid may be made to the bath to prevent gassing.
Patent GB-611125-A (GB)
Title: Improvements in or relating to saw-sets
IPC: B23D63/02
Filed: 1946-04-20
Abstract: 611,125. Saw-setting tools. NEILL & CO. (SHEFFIELD), Ltd., J., and BOWER, W. L. April 20, 1946, No. 12141. [Class 145 (ii)] In a saw-setting tool comprising a pair of handles pivoted together, one carrying a fixed setting die and a movable plunger forming the cooperating die, and the other being in the form of a bellcrank lever, the short arm of which operates the plunger, the effective length of the short arm is less than the radius of the pivot carrying the handles so as to obtain a high mechanical advantage. The handle 10, Figs. 4 and 6, carries the fixed jaw 59 and the co-operating plunger 27 and the handle 14 is pivoted to the handle 10 by means of two short pivot screws 22. The handle 14 actuates the plunger 27 by means of a plunger 39 and the pivot boss of the handle 14 is slotted centrally at 20 to enable the plunger 39 to lie between the ends of the pivot pins 22 so that the effective length of the short arm of the handle 14, i.e. the distance between the point of contact of the plunger 39 and the plunger 27 is less than the radius of the pivot pins 22. The dies have inclined portions 61, 63 to effect the setting of the saw-teeth and the upper end of the portion 61 is flattened to relieve the pressure on the extreme points of the teeth. Saws of various thicknesses are accommodated by adjustment of the plunger 39 laterally, effected by the rotation of a knurled micrometer head 48 to which is secured a stud 46 which bears on an adjusting plunger 43, having an inclined surface 44 coacting with an inclined surface 41 of the plunger 39. The micrometer head is frictionally held in position by a compression spring 52. The end 40 of the plunger 39 may be tapered to a narrow straight-edge portion giving a larger area of contact with the plunger 27.
Patent GB-108902-A (GB)
Title: Improvements in and relating to Electric Furnaces.
IPC: H05B7/00
Filed: 1916-08-28
Abstract: 108,902. British Thomson-Houston Co., (General Electric Co.). Aug. 28, 1916. Electric braking; master control systems; systems for continuous-current motors only.-A motor adjusting a furnace electrode 3 is connected for either direction of rotation by a switch system, which also closes the armature circuit through a braking-resistance when the armature is disconnected from its supply conductors. An electromagnetic cut-out prevents closure of the motor circuit except when the main supplypressure is normal. Direct-current supply conductors 14, 15 are permanently connected to the field winding 12 of the motor 9. Relay magnets 18, 19 operate pairs of switches 39, 40 and 55, 56 connecting the motor armature in opposite directions through one or both of resistances 45, 46 across the direct-current leads. Mechanical interlocking means 47, 48, 49 between the armatures of the relay magnets 18, 19 and of a solenoid 50 prevent the rise of the last-named armature until both relay magnets are de-energized, when the back E.M.F. of the motor causes the solenoid 50 to close a switch 51 and short-circuit the motor armature through the braking-resistance 52. Over. running is thus checked. The relay magnets 18, 19 are connected to contacts 26, 27 for a switch arm 28 operated by a spring-opposed solenoid 20, wound in sections controlled bv a switch 24 and excited by a transformer 21 in the supply main of the electrode. In the relay circuit are also a switch 35 closed by a solenoid 34 only when the main supply pressure is normal, and a hand switch 36, which diverts the circuit from the solenoid 20 to pushes 59, 60 for hand-regulation. Specification 7821/10, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Patent GB-162913-A (GB)
Title: Improvements relating to water tube boilers
IPC: F22B13/02
Filed: 1920-05-01
Abstract: 162,913. Galloways, Ltd., and Smith, R. J. May 1, 1920. Addition to 133,739. Water-tube boilers.-In a water-tube boiler having a lower drum C containing the fire-box, an upper drum A, and water-tubes E connecting the drums, as described in the parent Specification, a superheater L is placed between the tubes and the boiler casing. The superheater consists of two sinuous tubes bent laterally in semicircular form around the water-tubes. The horizontal baffle H has a dome-shaped central portion, a part h' of which is removable through the uptake K. Each of the drums is formed of two detachable parts secured together by bolts and nuts.
Patent GB-461853-A (GB)
Title: Improvements relating to fatty oil polymers
Filed: 1936-04-29
Abstract: Fatty oils are polymerized by adding a halogenated hydrocarbon as diluent and treating with an active halide catalyst of the Friedel-Craft type.  Diluents specified are, chlorinated gasoline or kerosene; di- or tri-chlorethylene; chlor-benzol, toluol or xylol. Drying or semi-drying oils are treated.  In examples, cotton-seed, mustard-seed or rape-seed oil is diluted with ethylene dichloride and the solution treated at ordinary or elevated temperatures up to about 100 DEG  C. with aluminium chloride or boron fluoride which may be blown in as a gas.  The product is then treated with alkali and washed.  Uniformly polymerized oils are obtained, and when formed from semi-drying oils, are soluble in mineral oils to form lubricating oils of lowered pour-point. The polymerizates are also used as wax-separation aids in the de-waxing of diluted oils. Specification 428,993 is referred to.
Patent GB-577701-A (GB)
Title: Improvements in or relating to foldable or collapsible bedsteads
IPC: A47C17/76
Filed: 1944-06-27
Abstract: 577,701. Foldable bedsteads. DALGLISH, J. June 27, 1944, No. 12228. [Classes 52 (ii) and 52 (iii)] A foldable bedstead comprises a frame with side members connected at their ends to top and bottom cross bars of invariable length to which the ends of the mattress are secured, each side member comprising several parts which may be telescoped together to produce a stool the mattress being folded in a number of superposed layers. Fig. 1 shows the bedstead frame comprising top and bottom cross bars 33, 33<1> secured to the side members 10, 11, 12 by bolts which also serve to attach the hinged legs 36 and Fig. 11 the stool form in which the parts 11, 12 are accommodated inside the part 10 and the mattress is folded at the cross bars 47, 48 and at the attachments 46 to the housings 20 riveted to the parts 11, 12. Stops 17, 19, Fig. 4, limit the inward movement of the telescopic parts, stops 16, 18 their outward movement and releasable spring-urged locking pins 22 in the housings 20 engage apertures 29, 30 in parts 11, 12 in the collapsed position and apertures 31, 32 in the open position. A pin and key-hole slot arrangement allows the legs to fold under the top and bottom cross bars 33, 33<1> where they may be secured by straps 50, 51 for storage or transport. In a modified construction two of the legs are dispensed with and the bed is rotatably mounted on a wall bracket the legs folding under the side members 10.
Patent GB-117820-A (GB)
Title: Improved Method of and Apparatus for Regulating the Temperature of the Gases in Fans for Induced Draught.
Inventor: PRAT LOUIS
IPC: F23L17/00
Filed: 1918-07-27
Abstract: 117,820. Prat, L. Nov. 28, 1916, [Convention date]. Chimneys an d flues. - The temperature of the gases passing through an induced-draught fan is regulated by admitting more or less air or other gas at a lower temperature. As shown in con. nexion with an induced-draught apparatus, in which a portion of the gases from the flue j is by-passed through the fan a, and delivered through an injector nozzle h in the chimney i, air is admitted through an opening c to mix with the gases passing to the fan. A damper k allows the fan to operate upon air or combustion products, or a mixture as may be desired. In a modification, separate dampers are provided to control the admission of the air and combustion products to the fan, and if desired the air may be admitted directly to the fan casing. Where two or more furnaces discharge into a common stack, low-temperature combustion products from one of them may be used instead of air. Reference has been directed by the Comptroller to Specification 25549/01.
Patent GB-474429-A (GB)
Title: Improvements in or relating to the stiffening of parts of footwear
IPC: A43B23/08
Filed: 1936-04-30
Abstract: 474,429. Shoe-en1 stiffeners. HERCULES CHEMICAL MANUFACTURING CO., Ltd., EDWARDS, J. S., LEE, H. S., and CHRISTMAS, J. A. April 30, 1936, No. 12335. [Class 17 (ii)] A shoe-upper end stiffener comprises a blank 1 of fibrous material stiffened by treatment with a stiffening agent and having a flexible tape 3 secured along that part of the marginal edge which, in the shoe, is not secured to the sole. The blank may be skived, rolled, or pressed in the region 2 when the flexible tape is secured or applied and the tape preferably overlaps the edge of the blank. The tape may be secured to the blank by adhesive applied to either the edge of the blank or to the tape, or alternatively, the tape may be of the selfadhesive type. The tape may or may not conform to the shape of the marginal edge of the blank.
Patent GB-807894-A (GB)
Title: Polymeric materials and coating compositions containing them, particularly for photography
IPC: G03C1/053
Filed: 1955-04-29
Abstract: Graft polymers are prepared by polymerization in aqueous medium of a mixture of 95 to 5 per cent of a protein material and 5 to 95 per cent of a monomer or monomers, said mixture containing from 60 to 100 per cent of hydrophilic material.  The monomeric constituent may comprise one or more hydrophilic monomers, one or more hydrophobic monomers, or a mixture thereof.  Specified hydrophilic monomers are vinyl pyridines, allylamines, acrylic and methacrylic acids, acrylamide, methacrylamide and derivatives of these compounds, and hydro-, phobic monomers are styrene, acrylonitrile alkyl acrylates and methacrylates, vinyl esters such as vinyl acetate, isopropenyl acetate, vinyl and vinylidine chlorides, diolefins and various derivatives of the above.  The protein material may be high or low grade and specified are hydrolysed gelatin, gelatin, glue, casein, soybean protein, oxidized casein, and acyl derivatives such as succinyl, phthalyl and acetyl proteins, e.g. phthalyl gelatin and succinyl glue. Polymerization may be batchwise or continuous, optionally in the presence of the surface-active agents and catalysts specified in the parent Specification.  Additional surfactants specified are sodium and potassium laurates and myristates.  The examples illustrate the continuous addition of various ingredients and in some examples, before polymerization, the pH of the medium is adjusted to between 3.0 and 4.0 with sulphuric or hydrochloric acid. The products may, if necessary, be kept in solution by the addition of alkali.  Coagulation may be effected with acid and redispersion then achieved with alkali or with further acid.  The graft polymers obtained from unsubstituted proteins may be hardened with formaldehyde or other gelatin hardeners and then become insoluble in water.  The products may be coated on any of the usual film support materials and thus find application in photography as gelatin substitutes or extenders (see Group XX). The solutions of the polymers, with or without protein additions, may be chilled, dried and sliced and later redissolved in warm water.  Specifications 648,927, 649,544, [both in Group IV (b)], and 807,891 are referred to.
Patent GB-780050-A (GB)
Title: Travelling wave tubes
IPC: H01J23/50
Filed: 1955-04-29
Abstract: 780,050. Impedance matching. STANDARD TELEPHONES & CABLES, Ltd. April 29, 1955 [May 3, 1954], No. 12511/55. Class 40(8). [Also in Groups XXXVI and XL (a)] The helix of a travelling-wave tube is coupled to input and output coaxial line feeders by a transmission line section of intermediate impedance comprising a ground plane conductor in the form of a disc 3, Fig. 1, or strip 23, Fig. 3, a ceramic disc 17, and a radial conducting strip (line conductor) 16, the conductor 3 or 23 being connected to the outer conductor of the feeder line and conductor 16 to the inner conductor of the feeder line and to the helix, the ceramic discs 17 being sealed across a tubular ceramic envelope 4. The line 3, 16, 17 has a length of n#/4 (nodd) and strip 16 has a tapered section 18. The line section carries a TEM mode. Strip 16 is bonded to dielectric 17 and the thickness of the dielectric 17 is a small fraction of #/4. A strip 18 of tapered width is attached to strip 16 and provides a smooth impedance transition to travelling-wave tube helix 8 to which it is connected at its free end. The inner conductor of the coaxial feeder 12 is connected to the line section by bridging member 20, the line section being shorted at this end by flange 21. If member 17 is of ceramic, members 16, 17 and 3, 17 are joined by any suitable ceramic-metal sealing technique such as the tungsten oxide or the Mo-Fe method, and members 16, 17 are sealed to ceramic envelope 4 by means of a glaze. The output coupling arrangement is similar. Plates 3, 6 -form polepieces of permanent magnet or coil 5 and the helix 8 is carried by dielectric rods or tube 9 of glass or quartz held at their ends in the central apertures of plates 3, 6. In a modifcation, Fig. 3, the device has an all-ceramic envelope 27, the line section having metal strip 23 bonded to dielectric sheet 24 and strip 25 being connected to helix 8a by tapered strip 18 as before. The ceramic envelope is sealed to line section 23, 24, 25 by glaze. The inner conductor 19a of the coaxial feeder is soldered or welded to strip 25, and a similar joint could be used in Fig. 1. The gun end of the device of Fig. 1 comprises ceramic base-plate 30 sealed to glass or ceramic stem 33 by glaze. The ceramic plate 30 has conductive strips 31, Fig. 4, applied by a ceramic-metal sealing technique, the strips 31 having terminal posts 32 for the gun leads. There may be three or more strips 31 and the ceramic disc 30 can be ridged between the strips to increase the D.C. breakdown potential. The external leads to strips 31 are spring fingers 35, Fig. 1, or are soldered to tags 34. Specifications 703,601 and 721,806, [Group XL (c)], are referred to.
Patent GB-402749-A (GB)
Title: Improvements in or relating to the production of ethylene oxide, particularly for the preparation of ethylene-glycol and of its derivatives
IPC: C07D301/10
Filed: 1932-05-02
Abstract: Ethylene oxide is produced by the reaction of ethylene with oxygen and water in the presence of a catalyst consisting of silver containing small proportions of gold, copper or iron at 150--400 DEG C.  A catalyst containing silver, gold, copper, and iron may be employed.  Carbon dioxide may be added to the gas mixture, and the reaction may be effected under reduced pressure.
Patent GB-657660-A (GB)
Title: Improvements in convertible bed-settees or armchairs
Inventor: DAVIS JOHN MAURICE
IPC: A47C17/23
Filed: 1949-05-11
Abstract: 657,660. Bed settees. PULLMAN SPRING-FILLED CO., Ltd., and DAVIS, J. M. May 11, 1949, No. 12583. [Class 52 (ii)] A bed settee comprises a collapsable bed frame constituted by two longitudinal sets of tubes comprising rear, intermediate, and front tubes 2, 3, 4 respectively which are arranged in alignment when extended to bed form and to be folded in superposed position when collapsed. The rear tubes 2 are connected by a cross tube so that the rear section is of U formation supported at the rear by recessed standards 5 and connected at the front to brackets 6 to lugs 7 of which are pivoted brackets 9. These brackets 9 are welded to the rear ends of the tubes 3 of the intermediate section the other ends of the brackets 9 being connected by tension springs 10 to the step 12 of the main settee frame 1. The adjacent ends of the tubes 3, 4 of the intermediate and front sections are welded to lugs which are pivoted together and to the ends of a transverse U- shaped tube 22 which also acts as a leg the tube 22 being also linked as shown to the intermediate and front sections so that on the latter being folded the leg is positioned in alignment therewith. The front section is bent downwardly as shown and is provided with cross tubes 34, 35 and with a panel which serves to cover the step 12 when the bedstead frame is collapsed. Pivoted to the standards 5 are arcuate guides 15 having rollers 181 and being spring controlled to serve as members tending to cushion the folding of the bedstead and also assisting its unfolding. The side tubes of the sections are connected transversely by cross tubes and by a spring mattress frame. Specification 657,648 is referred to.