baber/WOPTO huggingface dataset:
Patent GB-543387-A (GB)
Title: Improvements in or relating to radio-receiving sets
IPC: H03G5/20
Filed: 1940-04-23
Abstract: 543,387. Valve circuits for wireless reception. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). April 23, 1940, No. 7316. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 28, 1940.] [Class 40 (v)] In a radio receiver the gain of the low frequency amplifier is controlled by varying the bias in accordance with the incoming signal and negative feedback is provided so that attenuation of the relatively high and low frequencies is obtained with weak signals by deriving the feedback voltage from a resistance which with a series-connected condenser is connected in parallel with a second resistance which with a seriesconnected condenser is connected across the output. Fig. 2 shows signal and automatic gain control detectors 8, 16 and low frequency amplifier 13 which is gain controlled through grid leak 21. Negative feedback is taken from network 22 ... 2S, blocking condenser 26 being provided. The Specification gives details as to the design of the feedback path to ensure that attenuation is produced only at small signal amplitudes. Specification 479,599 is referred to.
Patent GB-1144551-A (GB)
Title: Means for fixing skirtings and the like
Inventor: BARKER HAROLD WILLIAM
IPC: F16B5/00
Filed: 1966-02-18
Abstract: 1,144,551. Skirtings. ALCAN RESEARCH & DEVELOPMENT. 17 Feb., 1967 [18 Feb., 1966], No. 7329/66. Heading E1B. An extruded aluminium skirting 11 is fixed to a wall by clips 1 of the same material, each with a vertical arm 4 spaced from the wall over which the skirting 11 is clipped by a down-standing arm 15. The arm 15 may, as shown, have a tooth 16 which engages with serrations 6 on the arm 4, although the tooth may be on the arm 4, and the serrations on the arm 15. Either or both (as shown) of the edges of the skirting 11 may carry e.g. P.V.C. buffer strips 14, or be formed simply as a pivoted rib (Figs. 2-4, not shown). Alternatively, the lower edge may be formed to project away from the wall and contact the floor at a tangent (Fig. 3, not shown), to help, e.g., to hold down a carpet. The clips 1 may be formed with a further vertical arm 8 (as shown) so that, e.g. electricity cables may be carried in the channel between arms 8 and 4.
Patent GB-1423136-A (GB)
Title: Heating element
IPC: H05B3/40
Filed: 1972-02-17
Abstract: 1423136 Resistance heating element POWER DEVELOPMENT Ltd 8 Jan 1973 [17 Feb 1972] 7387/72 Heading H5H An elongate heating element comprises one or more electrical conductors 12 extending longitudinally of and spaced from a surrounding open-ended solid walled metal sheath 10, the sheath being completely filled with resistive material 14 containing SiC or carbonaceous material such that when current is passed between the conductors 12 or between a conductor 12 and the sheath 10, heat is generated in the resistive material 14. The resistive material may be powdered carbon or silicon carbide or a ceramic, resin or phosphate bonded carbon or silicon carbide material. Ceramic bonded silicon carbide is made by mixing clay, graphite and silicon carbide and then pressing them. A ceramic bonded carbon resistor is made by adding carbon to a blend of high quality alumina and clays and then firing. The sheath may be of copper, stainless steel or rimming steel. The conductor(s) 12 may be solid wire, stranded wire, or cylindrical tube. The sheath may have an insulating external layer or standoff insulators. The element may be single or three phase. The element may be made by ramming the resistive material into a sheath containing the necessary conductors and then rolling or drawing the assembly down to the required diameter. Alternatively the resistive material may be extruded on to the central conductor or conductors prior to the addition of the metal sheath. The silicon carbide material provides self protection against voltage surges. The element may be bent to form a towel rail, may be used as an underfloor heater, as a wall heater, as a portable heater, in a storage-heater, or a runway or roadway heater.
Patent GB-636302-A (GB)
Title: Improvements in hernial and like trusses
IPC: A61F5/30
Filed: 1948-03-10
Abstract: 636,302. Trusses. RUSSELL, A. E., and REUSCH, B. W. March 10, 1948, No. 7404. Convention date, March 10, 1947, [Class 81(ii)] In a hernial truss in which a pad 15 is supported by a body belt 21 the pad is removably fixed to a plate 10 which is adjustably supported by the belt, the plate 10 being provided with a stud 12 adapted to co-operate with a socket member 13 carried by the pad supporting plate 14. The plate 10 is fitted with cam clips 18 pivotally connected by pins 19 passing through lugs 20 the clips being adapted respectively to adjustably secure the belt 21 after being passed round the body of the wearer.
Patent GB-660393-A (GB)
Title: Chaff cart for use with combine harvesters and the like
IPC: B60D1/14
Filed: 1949-03-18
Abstract: 660,393. Draught appliances. FAIRWEATHER, W. C. (Maschinenfabrik Geb. Claas). March 18, 1949. No. 7423/49. Classes 103(v) and 108(ii). In a chaff cart for use with a combine harvester, in which the shafts are mounted so that they can be swung about vertical axes and secured in different positions, provision is made for adjusting the shafts so that one is parallel to the longitudinal axis of the cart whilst the other is inclined towards it. As shown, the shaft c extends forwardly and is braced by shaft b, for use in working position behind a combine harvester g. Alternatively, shaft b may be arranged straight ahead braced by shaft c for use when the cart is being towed behind the combine harvester. Specification 219,887, [Class 103(v)], is referred to.
Patent GB-1464388-A (GB)
Title: Preparations containing microencapsulated substances and process
IPC: A61K9/70
Filed: 1974-02-19
Abstract: 1464388 Pharmaceutical dispersions including microcapsules SCHERING AG 19 Feb 1974 [21 Feb 1973] 7443/74 Heading A5B Pharmaceutical dispersions suitable for topical administration comprise 1 to 40 wt. % of water and a microencapsulated medicament. The medicament may be an antiphlogistic, antibiotic, antimycotic, antiseptic, or steroid. The dispersion may contain another microencapsulated medicament or another medicament which is not microencapsulated. The microcapsules may be of gelatin or polyethylene. The dispersion may be a liquid, lotion, cream, ointment, stick, salve, suppository. In Example 16 the dispersion is incorporated into an adhesive plaster.
Patent GB-474201-A (GB)
Title: Improvements in and relating to bag or sack holders
IPC: B65B67/12
Filed: 1937-03-15
Abstract: 474,201. Sack holders. STATHEM, V. L. March 15, 1937, No. 7522. [Class 58] A sack holder comprises a rigid bagengaging bar 5 and an opposed bar formed of two hinged sections 23, the sectional bar being movable from a position parallel to the main bar into angular relation therewith. The bar 5 extends into sockets in blocks 2 mounted on a support and towards one end rigidly carries a segment plate 6 adapted to engage with a sliding stop 7 to limit the rotary movement of the bar in its sockets. Springs 11 secured to the bar 5 and to the blocks 2 tend to return the block to a position in which the segment plate is brought above the stop after the stop has been retracted to allow the bar 5 to turn to discharge a filled sack. The cooperating section bars 23 which are pivoted together at 30 are similarly rotatably socketed in blocks 20 carried by angle brackets 18 that project through slots 16 in the blocks 2 and are secured to the blocks by pivot pins 19 arranged to slide in slots 17 at right-angles to the slots 16. The rotation of the bars 23 is controlled by a segment plate 35 engaging a sliding stop 36 similarly to the plate and stop for the main bar. The bar 5 and the co-operating bars 23 are provided with hooks 15, 32, which, when the plates 6, 35 are against the stops, are erect to hold the edges of the sack, but which swing downwards owing to the weight of the filled sack when the stops are retracted. The stops for the main and the section bars are retracted simultaneously by a trip lever 44. The hooks on the section bars are carried on short blocks adapted to slide in the hollow bars and separated from each other by springs. Ledges 54 are arranged below the hooks to maintain the sides of the sack close to each other while the mouth is being closed by stitching. In operation a sack is positioned on the hooks while the holder is in the position shown in Fig. 3, the section bars being forced into this position by a spring 21 connecting the two brackets 19 ; after filling, the section bars are pushed close against and parallel to the bar 5, being held in that position by a spring catch ; the sack is then sewn or otherwise closed and the lever 44 tripped to release it, the spring catch being then released to permit the holder to take up the position shown in Fig. 3 again.
Patent GB-1378072-A (GB)
Title: Treatment of metal surfaces for producing presensitized plates
IPC: B41N3/03
Filed: 1972-02-18
Abstract: 1378072 Specially treated supports for presensitized materials ASAHI KASEI KOGYO KK 18 Feb 1972 [20 Feb 1971] 7539/72 Heading G2C A pre-sensitized material comprises a support with a roughened metallic surface which has been treated with an aqueous solution consisting of hexafluosilicic acid or a hexafluorosilicate with or without an acid and then coated with a photohardenable layer. Specified photo-hardenable layers are the photo-polymerizable compositions of Specification 1376450 optionally containing an acrylate phosphate or methacrylate phosphate, photocross-linkable polymers, vinyl polymers with diazo resins and polymers admixed with bichromates, azides or quinone diazides. The metallic surface is preferably degreased before applying the aqueous solution which may contain an acid or an alkali. The support may be a bi- or tri-metallic support or a polymeric film laminated to a metal layer. The material on imagewise exposure and development produces a printing plate which gives a longer run and is more hydrophilic in the metal areas than supports treated with hexafluorides.
Patent GB-557425-A (GB)
Title: Improvements in ore concentration
IPC: B03D1/00
Filed: 1942-06-04
Abstract: 557,425. Concentrating ores. KNAPP & BATES, Ltd., and KNAPP, E. A. June 4, 1942, No. 7582. [Class 82 (ii)] [Also in Group III] Materials containing native metals such as copper, silver, and gold, tarnished sulphide ores, oxide and carbonate ores of metals such as copper, lead and zinc, and slags, containing fine metal fragments, are concentrated by gravity methods in a medium to which has been added a cation-active reagent to effect selective flotation of the gangue. The reagent may be a pyridinuim salt containing a long-chain fatty substituent, cetyl pyridinuim bromide, tetrasubstituted ammonium salts such as cetyl trimethyl ammonium bromide, or the substances known under the Registered Trade Mark " Sapamin " or under the trade name Emulsol. In some cases an oil, which may be a non- frothing oil and is usually a non-saponifiable oil, may be. added as a binder, a suitable oil being a wood or coal distillation product or refinery residue. A wetting-agent may also be added. The gravity separation may be assisted by an upward current of water or air.
Patent GB-430934-A (GB)
Title: Improvements in or relating to mensuration devices and the like
IPC: G01B3/08
Filed: 1934-03-10
Abstract: 430,934. Scales. GLOVER, H. S., 96, Stainbeck Road, Leeds. March 10, 1934, No. 7640. [Class 97 (iii)] A mensuration device comprises a body portion provided with a set of graduation marks and an index portion which is housed in a recess in the body portion and is movable or interchangeable to bring one of a number of sets of numerals into conjunction with the graduation marks thus providing a number of alternative scales in one instrument. As shown in Fig. 2, the body portion a has at one edge an inclined surface carrying the graduation marks, at the other edge a raised lip, and, between the two, a recess for the index portion b. The latter is of hexagonal cross-section, has six sets of differently spaced numerals one set on each face, and is held in the recess by springs c engaging annular grooves at the ends of the portion b. Locating pieces cl also engage the grooves in the portion b and ensure that the latter is accurately positioned relatively to the graduation marks. The portion b may be raised from the recess against the action of the spring c, turned to bring the desired face to the top and dropped back into the recess. In a modification in which alternative graduation marks may be used, the graduation marks are on an interchangeable part adapted to be attached to the body portion a by dovetail joints, clips, press studs or by utilizing the resilience of the part to spring it into engagement with studs on the body portion a. In a further modification the body portion is provided with a set of graduations on both edges and each set is provided with a rotatable index portion. The body portion may be in two separate strips with a rotatable index portion against the inner surface of each, the two strips being enclosed at the ends in caps and pressed apart by springs. In the form shown in Fig. 15, the graduation carrying strips a and retaining strips a<1> are mounted on a resilient base a<2> so as to form recesses for the index portions b. The latter may be withdrawn and adjusted by bending the base a2 transversely.
Patent GB-408443-A (GB)
Title: Improvements in and relating to holders for sharpening razor blades
IPC: B24D15/10
Filed: 1933-03-18
Abstract: 408,443. Sharpening razors. Mc- DIARMID, T. B., 115, Hardware Street, Melbourne, Australia. March 18, 1933, No. 8253. Convention date, March 19, 1932. [Class 60.] A holder for use in sharpening a razor blade 8 on the wet surface 5<b> of a concave glass sharpener 10, consists of a curved metal member 5, of similar shape to that of a blade, on the convex surface of which the blade is retained by lugs 6 of such a length as to rest on the surface 5<b> during the sharpening operation. The holder may have on its rear surface an operating-knob, or may have therein a recess 12 for the finger. The surface of the glass may be smooth, fluted, corrugated or otherwise uneven, and the glass may be immersed in water during the sharpening operation. Reference has been directed by the Comptroller to Specifications 326,754, [Class 60], and 362,200.
Patent GB-1376351-A (GB)
Title: Tubeless tyre valve
IPC: F16K15/20
Filed: 1973-01-22
Abstract: 1376351 Valves SCOVILL MFG CO 22 Jan 1973 [23 Feb 1972] 8430/72 Heading F2V A resilient housing of a tyre valve has two circumferential ribs 13, 15 respectively axially spaced from the surface 11 of an enlarged base 9 a distance corresponding to the thickness of a steel wheel rim 21 and an alloy wheel rim 25, e.g. #" and “" respectively.
Patent GB-476146-A (GB)
Title: Improvements in or relating to rubber-faced paving blocks for roads, pavements and the like
IPC: E01C5/22
Filed: 1937-03-22
Abstract: 476,146. Paving-blocks. SOC. ITALIANA PIRELLI. March 22, 1937, No. 8436. Convention date, March 21, 1936. [Class 87 (i)] In a paving-block as described in Specification 415,936 and consisting of a preformed rubber wearing layer, a concrete base and a metallic reinforcement connecting the rubber layer and the base, the whole of the rubber layer or the lower part thereof which may be hard rubber is reinforced with an unwoven mass of textile fibre material. Preferably, the reinforced rubber is constituted by scraps of reinforced pneumatic tyre covers.
Patent GB-479397-A (GB)
Title: Improvements in or relating to hermetically closed heat insulation elements
IPC: F25D23/06
Filed: 1937-03-23
Abstract: 479,397. Nonconducting coverings for heat. AKTIEBOLAGET TERMISK ISOLATION. March 23, 1937, No. 8516. Convention date, March 25, 1936. [Classes 29 and 64 (ii)] In the construction of a hermetically sealed evacuated heat insulating element composed of thin walls sustained by a packing material, such as kieselguhr, the latter is introduced in the form of a slime by mixing a carrier liquid therewith, the liquid subsequently being removed from the element. An element comprising thin metal walls 3, 4, a frame 6 and a connecting strip 5 of poor conducting material, which may also be metal, is provided with a filling opening 7 and a liquid or air withdrawal pipe 15 attached to a recess 16 in the outer wall of the element. A funnel 8 depending from a container filled with the slime is introduced into the opening 7, the displaced air flowing out through pipe 15 during filling. The opening 7 is then sealed by a cover preferably welded to the wall of the element, and the pipe 15 connected to a suction pump for the removal of the liquid. To prevent withdrawal of the filling material the recess 16 is surrounded by a sieve 17, Fig. 3, and non- displaceable porous material is packed therebetween. The filling operation is assisted by shaking the element, such as by an eccentric flywheel 14 mounted beneath a resilient table 12 supporting the element. The latter may be heated during the exhausting operation. When a low pressure, for example 0À1 to 2À0 mm. mercury, has been reached the pipe 15 is sealed off and pressed into the recess, the latter then being filled with pitch. The carrier liquid may also comprise alcohol or other liquid of low heat of vaporization.
Patent GB-455420-A (GB)
Title: Improvements in or relating to automatic coupling devices for vehicles
IPC: B60D1/02
Filed: 1936-03-23
Abstract: 455,420. Automatic couplings for vehicles. WOHLDORF, H., 41, Schleusberg, Neumuenster, Germany. March 23, 1936, No. 8629. Convention date, Feb. 15. [Class 103 (v)] In an automatic coupling for road &c. vehicles a draw-bar 6 on one vehicle is adapted to enter between the arms 2, 3 of a forked coupling- member on the other vehicle and to be engaged by an arcuate pin 14, preferably of circular cross-section, guided within a correspondingly curved guide 8 on the arm 2, the pin 14 in the operative position also engaging an opening 13 formed in the arm 3 as a continuation of the guide 8. In the inoperative position shown the pin 14 is supported by a locking-lever 22 engaging a recess 21 at the lower end of the pin ; the lever being forced inwardly against the pressure of a spring 14 by the tip 27 of the draw-bar 6 and permitting a spring 91 to slide the pin 14 into engagement with the eye 5. For releasing purposes the pin 14 is provided with a hand-knob 16, the securing- pin 15 of which slides within a slot 17 in the guide 8, a cover plate 18 moving with the pin 14 and knob 16 to cover the slot when the coupling is effected.
Patent GB-724325-A (GB)
Title: Improvements relating to variable speed power transmissions for motor vehicles
Inventor: ARGYLE GEORGE
IPC: F16H61/02
Filed: 1953-03-28
Abstract: 724,325. Controlling change-speed gearing. MORRIS COMMERCIAL CARS, Ltd. March 28, 1953, No. 8638/53. Class 80 (2). In a pre-selector twospeed auxiliary countershaft gear for motor vehicles, affording direct or overdrive, a lever pivoted at 12 and constrained by a toggle spring 15 to occupy one or other of two positions determined by stops 13 has one arm 11 controlling a double claw clutch 9 in the gear and another arm 20 carrying a roller 21 co-acting with the cam ends of two slidable bars 23, 23A, while a pin 31 on an arm 32 pivotally carried by a lever 34 is pre-selectively engaged in a recess 35 in one or other of the bars 23, 23A, the lever 34 being linked at 40 with the engine clutch pedal so that the pre-selected gear change is made effective upon depression of the clutch pedal. The pin 31 is carried in a slot 26 of a slidable plunger 25 operated mechanically, electrically or hydraulically by a manual pre-selector handle on the steering column.
Patent GB-605256-A (GB)
Title: Improvements in or relating to the manufacture of metallic propeller blades for aircraft
IPC: B21D53/78
Filed: 1944-05-08
Abstract: 605,256. Making screw propellers. UNITED AIRCRAFT CORPORATION. May 8, 1944, No. 8695. Convention date, April 23, 1943. [Class 83 (ii)] [Also in Group XXXIII] A hollow blade for an aircraft propeller is made by preforming an inner metal tubular member to flatten one end thereof, preforming an outer sheet metal member to airfoil section and securing the two members together while positioned one within the other. A tube 10 of uniform bore is machined to reduce the wall thickness progressively towards the end 12 and has a collar 11 shrunk on or integrally attached to the other end. The tube is then drawn out longitudinally by swaging &c., is flattened at the tip end and has the flattened walls joined by electric resistance, spot or seam welding at 12, after which the tube is further flattened progressively between dies 14 whilst at an elevated temperature and with the introduction of gas, preferably nitrogen, to the interior. A V-shaped locating notch 16 is cut in the completely flattened lip of the tube. In preforming the outer member, a metal sheet is pressed between dies as shown at 15, Fig. 11, is cut to shape and is then shaped by a plunger 18 and a compressible platen 17 of rubber &c., after which the edges 15a are united by electric welding &c. as shown at 21, Fig. 13, along a line lying outside the final shape of the blade. The member 15 is next given its final shape between the same dies 14, Fig. 12, as were used for the tubular member 10, a temporary bulkhead being secured in the open end and a spacing member 9 being placed between the dies at one side to correspond with the welded edges 21 which also lie between the faces of the die. The member 15 may be heated for this step and pressure applied internally through the open end 11. The meeting edges are then united as by copper welding within the weld 21, forming a fillet inside the joint. The temporary bulkhead is next replaced by one having an aperture to fit and position the member 10 which is inserted in the member 15 with the notch 16 engaging a transverse rivet in the latter member, and the bulkhead is welded to the two members 10, 15. The two members are then permanently united by being dipped in a bath of soldering material having a lower melting point than the copper brazing, small openings being provided in the member 15 for entry and draining of the solder and pressure being applied outside the member 15 and inside the member 10. The seam welding 21 is next cut away and the blade finally shaped to the required airfoil section.
Patent GB-893847-A (GB)
Title: Method of operating gas-cooled generators
IPC: H02K9/00
Filed: 1959-03-13
Abstract: <PICT:0893847/III/1> In a hydrogen-cooled turbo-generator 11 having a water-cooled stator winding, the water is cleared of any dissolved hydrogen that it may have acquired during its passage through the machine by setting it under pressure of inert gas, e.g. nitrogen in a reservoir 16, instead of subjecting it to a vacuum as is usual. Thereafter, the water is passed by a pump 17 through a filter 18 and cooler 19 and is returned to the machine.