baber/WOPTO huggingface dataset:
Patent GB-1187844-A (GB)
Title: A Fastening Mechanism.
IPC: G03B21/32
Filed: 1967-05-01
Abstract: 1,187,844. Reel cases. MINNESOTA MINING & MFG. CO. 1 May, 1967 [2 May, 1966], No. 20141/67. Heading B8P. [Also in Division E2] ' A reel case comprises a cover 14 formed] with a peripheral flange 22, which abuts a sealing gasket 24 located peripherally on a flanged base 12. Central dished sections 26 and 30 of the base and cover are releasably secured together by a radially expandable stud fastening 36. The stud fastening comprises an elastic cup 32 which can be expanded by a spigot 36, forced axially into the cup, to grip the dished section 26. Resilient flanges 64 cushion a reel within the case. Cutaway portions 54 facilitate removal of the reel. Annular ridges 56 and 58 on the bottom of the base and top of the cover respectively facilitate stacking of a number of cases. Openings 60 in ridge 56 prevent a suction-gripping effect when the case is placed on a flat surface.
Patent GB-262023-A (GB)
Title: Washable cover for seats of water closets
IPC: A47K13/12
Filed: 1926-08-16
Abstract: 262,023. Herzog, H. A., and Wisbrock, K. H. Aug. 16, 1926. No Patent granted (Sealing fee not paid). Closet seats; seat-guards, -A removable cover for a closet seat comprises a horseshoe-shaped strip of rubber 1, Figs. 1 and 4, curved in cross-section, the middle portion having an extension 6 to grip under the seat. The strip is provided underneath with sucking discs 7 and above with layers 2, 3 of sponge rubber.
Patent GB-1351900-A (GB)
Title: Ram intensifier
IPC: F15B11/028
Filed: 1972-05-01
Abstract: 1351900 Perforating BENDIX CORP 1 May 1972 [30 April 1971] 20188/72 Heading B3W [Also in Division F1] An apparatus for producing a high pressure jet of liquid for cutting comprises a pair of differential piston intensifiers 10, 12, Fig. 1, a pair of valves 14, 16, for directing low pressure operating fluid to chambers above the pistons 18, 20, a source 134 from which a different working fluid is supplied to the chambers below pistons 30, 32, and control means for alternately supplying operating fluid to the intensifiers with sufficient overlap to ensure full pressurization of both intensifiers during each cycle so that fluctuations in pressure of working fluid are avoided. The operating and working fluids are oil and water respectively. Slide valves 14, 16 supply operating fluid from a source 46 to either the chambers above pistons 18, 20 or to a sump 74. The slides are moved by the operating fluid through ports 114, 118, 116, 120 which are opened and closed by the pistons 18, 20 at such times as to provide the required overlap of pressurization. A starting valve 126 ensures that the slides are in the correct starting positions. High pressure working fluid passes from chambers 38, 40 to a surge vessel 160 and a jet 162.
Patent GB-501200-A (GB)
IPC: F01K13/02
Filed: 1937-07-21
Abstract: 501,200. Turbines ; power generating systems. BRITISH THOMSON-HOU STON CO., Ltd. July 21, 1937, No. 20248. Convention date, July 22, 1936. [Classes 110 (iii), 122 (iii), and 122 (v)] [Also in Group XXXV] To prevent evaporation of liquid within the heating element of an elastic-fluid power plant, e.g. in forced circulation and flash boilers, a fuel supply valve is controlled by differentially coupled devices responsive to temperature and pressure respectively of the fluid discharging from the heating element; the fluid circulation speed may be modified when the valve is closed. As shown an element 39 responsive to the temperature of mercury issuing from a heating element 12 and an element 38 responsive to the pressure of the same fluid are differentially connected to a tilting mercury switch 37 so that. solenoid 30 holding the fuel valve 11 open against a closing force is de-energized when temperature and pressure relations liable to produce the undesired evaporation in the heating element occur. A relay 79 may be simultaneously de-energized to insert resistance in the field circuit of the circulating pump motor 76 to increase the feed rate. The plant shown includes a vapour separator 13 according to Specification 479,272, [Group XIII], from which a mercury turbine 19 is supplied, and a condenser boiler 20 supplying steam to a turbine 26 ; emergency governors 48, 53 of these turbines may act upon switches in circuit, with the elements 30, 79, The supply of vapour to the turbine 19 is limited to a maximum pressure by a diaphragm 45 operating a switch 43 in the circuit of these elements. To eliminate the control by the temperature and pressure responsive elements at low turbine loads a load responsive diaphragm 68, subject to the pressure in a high pressure stage of the turbine 19, operates a switch 72 in parallel with the switch 37. The gas seals of the shaft of the mercury turbine may be arranged so that nitrogen is supplied whenever the valve 11 is closed ; a valve 63 for this purpose is maintained closed so long as the circuit of the solenoids 30, 79 is energized by including a solenoid 64 in that circuit.
Patent GB-516799-A (GB)
Title: Improvements in or relating to apparatus for testing and taking measurements on electrical elements at high frequencies
IPC: G01R23/00
Filed: 1938-07-08
Abstract: 516,799. Current, voltage, and phase-difference measurements. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. M., and KRAM, W. July 8, 1938, No. 20286. [Class 37] Apparatus for making tests and measurements upon elements at high-frequency, particularly in respect of phase, and voltage level, comprises two or more series-connected elements and a valve amplifier, means being provided for connecting one or a number of the elements to the amplifier input for comparative measurements on an alternating-current potentiometer. In Fig. 1, the network to be examined is connected to terminals A, B, C, the terminal C being connected to the grid 4 of a valve amplifier which may have a negative feedback. The terminal C can be connected as desired to terminals A or B. High-frequency oscillations are supplied on coaxial conductor 6, and one connection to an alternating-current potentiometer (not shown) is made by coaxial conductor 7, and, if desired, a valve amplifier. The other connection to the potentiometer is by way of conductor 8 through a transformer or capacitance coupling. An adaptor 11 makes the power supply connections, and a metal screw 12 is located between terminals A and B. The various earth leads 13, 15, 16, and that from terminal D have a negligible common impedance. For making comparative measurements between the positions CAD and CBD, a knob 31, Fig. 5, on the casing panel carries a contact blade 26 and is provided with flats which engage a plate spring member in either positon, contact with the terminal C being made by a rolled member 32. Fig. 3 shows the casing 17 which is made of copper and has an insulating panel for the terminals A ... D. Jacks 19, 20, condensers V, W, X, valve holders 22, output transformer 10, adaptor 11, earthing block and the other components of Fig. 1 are located within the casing.
Patent GB-716558-A (GB)
Title: New black vat dyestuffs of the benzanthronepyrazoleanthrone series
Inventor: IRVING FRANCIS
IPC: C09B5/06
Filed: 1951-08-31
Abstract: The invention comprises dyes of the benzanthronepyrazolanthrone series of the formula: <FORM:0716558/IV(c)/1> where n is 1 or 2, X is -NO2 or -NH2 and the anthraquinone carboxylic acid amide groups are attached to the 3, 9, 11, or 14 positions of the benzanthronepyrazolanthrone nucleus, and a method of making them by treating an aminobenzanthronepyrazolanthrone containing one or two amino groups in the 3, 9, 11, and 14 positions with a halide of 1-nitro- or 1-amino-anthraquinone-2- carboxylic acid, and if desired, when the nitro body is used, replacing the nitro by amino.  They may also be made by acylating with 1-chlor-anthraquinone-2-carboxylic acid and replacing chlorine by amino.  The products dye cellulosic material black shades.  In examples, 1-nitro anthraquinone-2-carboxylic acid chloride is condensed with (1) 11-, 3-, or 14- aminobenzanthronepyrazolanthrone, followed by reduction by means of a stream of ammonia passed through a suspension of the product in nitrobenzene, or (2) 3, 11-diamino-benzanthronepyrazolanthrone, followed by vatting with alkaline hydrosulphite solution.  The aminobenzanthronepyrazolanthrones used as starting materials are made by (1) condensing 3-bromobenzanthrone with an a -amino or acylaminopyrazoleanthrone and subjecting the product to alkali fusion (e.g. the 9- or 11- amino body) (2) condensing 3-bromobenzanthrone with an a -chloropyrazolanthrone, replacing the chlorine by amino, and fusing with alkali (e.g. the 14-amino body); (3) condensing 3-bromo-9-nitrobenzanthrone with pyrazoleanthrone, reducing the nitro group and fusing with alkali (e.g. the 3-amino body); (4) condensing 3.9-dibromobenzanthrone with pyrazoleanthrone, replacing the bromine atom, and fusing with alkali; (5) condensing 3-bromo-9-nitrobenzanthrone with an acylaminopyrazoleanthrone, reducing and fusing with alkali (e.g. the 3.11 -diamino body). Specifications 344,057, 345,651, and 345,728 are referred to.
Patent GB-182015-A (GB)
Title: Means for fastening mats on motor car and like steps
IPC: B60R3/00
Filed: 1921-08-02
Abstract: 182,015. Driver, H. A. Aug. 2. 1921. Mats.-A mat b is secured to a motor-car or like step c by means of a pair of cramps d, the upper arm of each of which extends almost the entire width of the mat and is serrated on its under surface to engage the mat, while a setscrew f passes through the lower arm e to bear against the under surface of the step.
Patent GB-796884-A (GB)
Title: Improvements in or relating to thermionic valves having envelope apertures hermetically sealed
Inventor: DYOTT RICHARD BURNABY
IPC: C04B37/02
Filed: 1955-07-15
Abstract: 796,884. Soldering and brazing. M.-O. VALVE CO., Ltd. July 6, 1956 [July 15, 1955]. No. 20625/55. Class 83 (4). [Also in Group XL (a)] In a thermionic valve having a sealed envelope 6 including a metal part 1 having an aperture hermetically closed by a disc 3, the disc has been cut from a corundum crystal, has a metal coating 4 bonded to its margin and is attached to the envelope by a metallic joint between the coating and the metal part. A cylindrical cup 1 of 43 per cent nickel 57 per cent iron alloy made by powder metallurgy has a shouldered circular aperture into which is fitted a coated disc of corundum, the surface of the cup having been cleaned by heating in wet hydrogen at 1000 ‹ C. and the parts adjacent the aperture where brazing is not required having been painted with alumina. The coating 4 is formed on the disc by preparing a paste from a powder of 160 grams of molybdenum powder and 40 grams of manganese powder by adding to 6 grams of the'powder 12 cc. of a binder made by dissolving 1.5 grams of pyroxylin in ethyl lactate, painting the paste on the disc which has been degreased with carbon tetrachloride, baked and masked where metallizing is not required, drying the paste in hot air and heating in wet hydrogen at 1400 C. to sinter the powder to the disc. The layer is cleaned and flashed with nickel electrolytically deposited. With the disc in the aperture a ring of brazing alloy 70 per cent copper 30 per cent silver is placed on the disc and the assembly heated in hydrogen at 800‹ C. to effect brazing. The cup is spigoted and soldered or brazed into the wall 6 of the envelope of a klystron or magnetron and a flanged nickel tube 8 is soldered or brazed to the wall for attachment to a waveguide. Soldering or diffusion sealing may be alternatives to brazing and the corundum may be formed by deposition and crystallization of fused alumina. Specification 796,883 is referred to.
Patent GB-216083-A (GB)
Title: Improvements in the manufacture of organo lead compounds
IPC: C07F7/24
Filed: 1923-08-14
Abstract: Tetra-alkyl and tetra-aryl lead compounds are prepared by mixing lead with alkyl or aryl halides and a substance which will yield nascent hydrogen in presence of a hydrogen yielding compound and slowly adding such compound; the reaction is preferably conducted in presence of a catalyst; the lead dialkyl or diaryl compounds first formed decompose into corresponding lead tetra-alkyl or tetra-aryl compounds and lead.  As materials yielding nascent hydrogen are specified silicon, ferrosilicon, and metals such as sodium or zinc in the presence of water or caustic soda solution, or in some cases ethylacetate.  As catalysts may be employed those commonly used for the Grignard reaction, ether, and primary, secondary, and tertiary amines and their alkyl halide addition products; the following are specified:-aniline, methyl- and diethylaniline, toluidine, diphenylamine, phenylene diamine, triethylamine, butylamine, amylamine, pyridine, piperidine, carbazole, phenylhydrazine, triethylphenylammonium iodide, acetamide, ether, ammonia, and quinoline.  In an example a lead sodium alloy of the composition Na4 Pb is heated with ethyl bromide and pyridine and water gradually added; the lead tetra-ethyl is isolated by steam distillation.  In place of ethyl bromide, there may be used methyl, ethyl, propyl, isopropyl, amyl, phenyl, &c., iodides, bromides or chlorides and the reaction may be effected under pressure.  The Specification as open to inspection under Sect. 91 (3) (a) refers broadly to the production of lead-alkyl or -aryl compounds by mixing lead with alkyl or aryl halides and subjecting the mass to relatively slow reduction; electrolysis is also specified for effecting the reduction.  This subject-matter does not appear in the Specification as accepted.
Patent GB-341390-A (GB)
Title: Improvements in the separation of impurities from oils and fats
IPC: C11B3/16
Filed: 1929-07-05
Abstract: In the refining and deacidification of fatty oils, the oil is freed from soaps and mucilaginous substances dispersed therein, by emulsifying with an inert neutral or acid liquid, and if desired with the addition of finely divided solid substances e.g. charcoal, and thereafter mechanically separating the film of impurities formed e.g. by sedimentation, filtering or centrifuging.  The inert liquid used has no chemical effect or solvent action on the oils or the impurities separated therefrom. p  In examples, crude cotton seed or linseed oil is emulsified and warmed with small amounts of aqueous solutions of acids or salts e.g. phosphoric or acetic acid or their soluble salts, or with glycerol, water, or acid amides such as formamide.  Turkey red oil or other dispersing agents, and solid substances such as, bleaching earths, asbestos or cotton fibre may be added.  The purified oil may be submitted, after purification, to a deacidification treatment, by treatment with a mist of water or a solvent of low boiling point under reduced pressure.
Patent GB-837433-A (GB)
Title: Improvements in or relating to snap-action electric switch construction
Inventor: MASON HOWARD F
IPC: H01H19/56
Filed: 1956-07-04
Abstract: 837,433. Snap-action switches; retractive switches. MASON ELECTRIC CORPORATION. July 4, 1956, No. 20689/56. Class 38 (5). A switch with a moving contact roller has an arcuate contact path with contacts having recesses and a lost-motion drive for the moving contact carrier. The arcuate path has contacts 20, 21, 22 with recesses 26 and with insulation 23 between the contacts and is engaged by the moving contact roller 25 in a rubber-like carrier 30 held between the legs 45 of a spring member 43 which, together with a yoke 35, is fixed to a shank 42 slidably fitting into a handle 33 and urged toward the contact path by a spring 37. When the handle 33 is first moved the action of the spring 37 retains the contact 25 in the recess 26 in the contact 21 so that one leg 45 of the spring 43 is bent outwardly and the carrier 30 is compressed. When a leg 36 of the yoke 35 engages the spring leg 45 the roller 25 is forced from the recess and the spring leg 45 snaps the carrier 30 over to the next contact 22 and as the roller passes the corner of the recess 26 in this contact the spring and the resilient carrier 30 move the roller 25 into the centre of the recess. The roller 25 rotates on a resilient axle 80 and bridges two rows of contacts. A spring 70 can be provided to return the contact to the centre position on release of the handle. Figs. 14, 15 show a rotary switch with eight pairs of contacts 96 and a roller contact 95 mounted on a yoke 117 slidable in a member 115 secured in a carrier 114 having trunnions 125 pivoting in the rotor 91. Oppositely-acting coil springs 116 interconnect the carrier 114 and the rotor 91, and according to the direction of rotation of the rotor 91, one or other spring 116 is strained and produces the snap movement when a surface 140 on the rotor engages the carrier 114 to force the roller out of its contact recess. Specifications 837,434 and 837,435 are referred to.
Patent GB-903316-A (GB)
Title: Improvements in or relating to circuits for feeding the windings of electrical machines
IPC: H02P7/34
Filed: 1960-06-13
Abstract: 903,316. Control of D.C. motors. MASCHINENFABRIK OERLIKON. June 13, 1960 [June 24, 1959], No. 20737/60. Class 38 (3). [Also in Group XXXV] In a Ward-Leonard system the field winding 10 of generator 3 is supplied through rectifiers 8, the firing angle of which is determined by a phase control circuit responsive to deviations of the motor speed from a reference value. The field winding 10 is also supplied from a singlephase transformer 13 through diodes 14, choke 15, and resistor 16, the current from this auxiliary source being in opposition to that from the controlled rectifiers. This enables the zero point of the exciting current to correspond with a firing delay angle of 90 degrees and extends the speed control range of the motor. In another arrangement, the transformer 13 is replaced by a three-phase transformer, Fig. 4 (not shown). The rectifiers 8 may also be controlled to afford limitation of the armature current of the Ward-Leonard motor.
Patent GB-600954-A (GB)
Title: Improvements in pocket magnifying glasses
IPC: G02B25/00
Filed: 1945-08-13
Abstract: 600,954. Magnifying-glasses. LEE, W. D. Aug. 13, 1945, No. 20781. [Class 97 (i)] The lens 2 is in a rectangular mount 3 to which are pivoted covers 7, 11 which can be used as supports to hold the lens in viewing position and can be folded to enclose the lens when not in use. The cover 7, Fig. 6, has flanges 8 carrying pins 6 sliding in slots 5 in the mount and the cover 11 is pivoted at 10 to the mount and has a flap 13 pivoted thereto. Fig. 5 shows the flaps supporting the lens upon an object visible through the aperture 16. By folding the flap 13 upwards from this position, arcuate portion 9, 12 on.the cover 7 and flap 13 may be used to hold the lens in the eye or rest it upon the object ; alternatively the covers may be used as a handle. In folding the flap 13 is pivoted to nest with cover 11 which is rotated to cover one side of the lens and the pins 6 slide in the groove 5 to allow the cover 7 to enclose the other side.
Patent GB-482642-A (GB)
Title: Improvements in the printing of articles having non-planar surfaces
IPC: B41F17/00
Filed: 1937-07-27
Abstract: 482,642. Printing on curved surfaces ; offset cylinders and blankets. OXVAR, Ltd. (Oxford Varnish Corporation) July 27, 1937, No. 20807. [Class 100 (ii)] Articles having non-planar surfaces including a rib or groove deviating from the central longitudinal plane of the work, such as a motor-car instrument panel A having a curved rib B, are decorated by means of a flexible printing-surface which has at least at the place where printing takes place a surface configuration substantially complementary to that of the work. The printing- surface may have a raised or depressed surface corresponding to that of the work ; as shown, however, a belt 25 passes over a supporting- roller 22 having a groove or rib 51 which corresponds substantially to the rib or groove on the article. The belt picks up an impression from an intaglio cylinder 20 and therefore prints by the offset method ; alternatively, it may be inked and print direct. The groove 51 is inclined to suit the curved rib B and may be formed in a covering wrapped round the cylinder. The covering is made of hardenable plastic material such as wood, papier mÔchÚ, solid or sponge rubber " gum " of the type used as transfer material, or synthetic resin compositions, and may be placed on the roller before hardening ; the work itself may be used as a mould in forming the covering in the flat. The work is fed through the machine by chains 6 provided with feeding and supporting lugs, and passes over a flat support at the moment of printing. A projection may be provided on the roller 22 to correspond to a recess such as C in the panel. Specification 452,195 is referred to.
Patent GB-1120753-A (GB)
Title: A device for attachment of the periphery of roof sheeting to a roof edge and for covering the roof edge, more particularly for flat roofs
IPC: E04D13/155
Filed: 1966-05-11
Abstract: 1,120,753. Roof edge trimming strips. K. GOBEL. 11 May, 1966 [11 Jan., 1966], No. 20859/66. Heading E1W. A device for attachment of the periphery of roof sheeting to a roof edge and for covering the roof edge comprises two sections 1, 2 of which one can be clipped on to the other and between which the edge of the roof sheeting after being rolled over in an S-shape, can be inserted so that the sheeting remains movable in two directions. As shown, the bottom section 2 is adjustably slidable on the arms 4 of a holder 3 attachable to a roof support (not shown), the edge of roofing sheet to be secured by the device being formed with a substantially S- shaped profile for engagement in the space between the upper parts of the sections 1 and 2. In another form Fig. 2 (not shown) the sheet-engaging part of the bottom section 2 extends beyond the adjacent part of the upper section 1 and the stem of the holder is adjustable relative to the arm portion thereof.
Patent GB-1104150-A (GB)
Title: Improvements in or relating to channel for a scraper chain conveyor
IPC: B65G19/28
Filed: 1965-03-12
Abstract: 1,104,150. Endless conveyers. GEWERKSCHAFT EISENH TTE WESTFALIA. 12 March, 1965 [19 Nov., 1964], No. 20892/66. Divided out of 1,104,158. Heading B8A. A scraper conveyer channel length is adapted to be bolted to adjacent channel lengths and is provided with a reinforcement portion 3 having surfaces 7 which engage the head of a bolt passing through a bore 18. The bolt is prevented from rotating when a nut is applied to its free end thus simplifying the ends of two channel lengths.
Patent GB-985271-A (GB)
Title: Skirts for ground cushion vehicles
Inventor: DEWAR DOUGLAS
IPC: B60V1/16
Filed: 1960-06-15
Abstract: 985,271. Air cushion vehicles. DUNLOP RUBBER CO. Ltd. May 24, 1961 [June 15, 1960], No. 20940/60. Heading B7K. A skirt for an air cushion vehicle comprises a shaped plastic foam member having secured thereto an inflatable outer skin of impermeable material. The foam material is of multi-cellular construction such as polyurethane foam and the outer skin may be rubberized fabric bonded to the foam and provided with an inflation valve. The upper wall of the cushion space may comprise quilted or reeded fabric or individual air bags or tubes. Reference has been directed by the Comptroller to Specification 935,825.
Patent GB-281361-A (GB)
Title: Improvements relating to the prevention and removal of incrustation in boilers
IPC: C02F5/10
Filed: 1926-08-25
Abstract: 281,361. Billwiller, J. Aug. 25, 1926. Addition to 257,915. Incrustation, preventing and removing.-The parent Specification describes the use of substantially pure resin acid for preventing and removing incrustation in boilers. In the present invention the resin acid is used in slightly oxidized or polymerized state, or when it contains water not removable by filtration. In either case, gums may be added. The oxidation or polymerization is effected by heating the resin acid to melting point, but not above distillation point. Resin acid containing water is obtained by saponifying it with alkalies or carbonates, and precipitating by adding an acid, when it is obtained as a white paste in the desired condition. The resin acid may be added to the boiler water in solution.