baber/WOPTO huggingface dataset:
Patent GB-420150-A (GB)
Title: Improvements in or relating to box lids or covers
IPC: B65D5/64
Filed: 1933-03-23
Abstract: 420,150. Struts for picture frames. AGNEW, A. F., 21, Poplar Grove, Hammersmith, London. March 23, 1933, Nos. 8844 and 26209. [Class 52 (v)] [See also Group XVII] A box cover of the type carrying a picture, photograph, ornamental design or other artistic production, for cardboard &c. confectionery boxes is built from the parts shown in Figs. 1 and 2, tongues g engaging the edges of an aperture d and a tongue i engaging a slit e. A cutout part h serves as a strut to support the part f in an inclined position when detached from the body of the cover, an aperture l serving to suspend the support and picture on a wall. The part f is of metal, cardboard, &c. and the picture &c. is secured thereon by adhesive, by bending over the edges to form grooves, or by a metal or other binding. The outer face of the pictures may be covered with celluloid, gelatine &c. The strut member may be separately formed and attached by a hinge. Fig. 7 shows a hinged lid, the lugs g passing through slits m. To facilitate insertion slits n terminating in openings o may be formed at the side of the slits m. According to the second Provisional Specification the cover may comprise a metal plate with its edge turned over to hold the picture and also to hold a detachable cardboard flange which engages the mouth of the box ; the plate also has a strut stamped from it, or alternatively or in addition means attached to the back for attaching to a wall. The flange may alternatively have a series of perforations allowing it to be torn off, or may be secured by a strip of adhesive paper &c. A lid without a flange may be hinged by paper or tape loops secured to the lid and passing through slits on the body or by a longitudinally folded strip of cardboard secured to the body and to the lid by means of lugs on the lid which penetrate the cardboard. These lugs may be used for suspending the cover, or a strut may be used for this purpose. The lid may slide in the lid flanges or in the mouth of the box or may screw into the lid flange.
Patent GB-181837-A (GB)
Title: Improvements in or relating to the reduction of oxides of tungsten and molybdenum
IPC: C25B1/00
Filed: 1921-03-22
Abstract: 181,837. Pearson, R. E., Craig, E. N., and Durelco, Ltd. March 22, 1921. Dry processes of extracting tungsten and molybdenum.-The metal is obtained as a fine powder, suitable for use in making pressed and sintered bars, by heating in a current of hydrogen the lower oxide obtained by electrolytic reduction of the trioxide.
Patent GB-526565-A (GB)
Title: Process for the manufacture of cellular substances with closed, gas-tight cells, particularly applicable to the manufacture of cellular ebonite
Filed: 1939-03-20
Abstract: 526,565. Cellular rubber ; moulding. SOC. FRANCO-BELGE DU CAOUTCHOUC MOUSSE. March 20, 1939, No. 8867. Convention date, Feb. 15. [Classes 70 and 87 (ii)] In preparing cellular rubber or ebonite with closed cells, unvulcanized rubber mixture 13 preferably cut into slices and reformed to the original shape is enclosed in two-part moulds 1 held between plates 2, 3, in a press, and heated by circulation of steam through passages in the plates. Each mould is connected by a pipe 10 to a supply pipe 12 for carbon dioxide or other gas. The gas is supplied to the mould to obtain a pressure of about 35 kg. per sq. cm., the gas supply is cut off and the mould heated to 100‹C. to effect a preliminary vulcanization. Pressure is then released from the mould, the contents expand to fill the mould, and a final vulcanization is effected by heating to 150‹C.
Patent GB-1058336-A (GB)
Title: Stabilisation of chlorinated polyethylene against heat
IPC: C08K5/3492
Filed: 1965-03-02
Abstract: Chlorinated polyethylene is heat-stabilized with at least 0.5% of melamine pyrophosphate.
Patent GB-927784-A (GB)
Title: A punching die element for use in the punching of rectangular holes in punching cards, and a punching die made from such elements
IPC: B21D28/34
Filed: 1962-03-08
Abstract: 927,784. Punching dies. V. F. SORENSEN. March 8, 1962 [March 13, 1961], No. 8974/62. Class 31 (2). [Also in Group XXII] A punching die element for punching rectangular holes in cards comprises a plurality of first steel bars of rectangular cross-section placed side by side to form a grid, a plurality of parallel grooves extending transversely across at least one face of said bars, and a second steel bar pressed into each of said grooves, the adjoining faces of the bars being surface ground in a common grinding operation. Steel bars 1 are assembled with spacers 2 and clamped by bolts 3, or are assembled in a jig. Grooves 4 are machined to a predetermined depth across the bars and further bars 5 are press fitted into the grooves. The upper surface of the assembly is then finished by grinding to form a cutting plate. A punch guide plate is made by assembling two elements so that the faces in which the holes 6 occur are remote from one another. In a modification, where the distance between the holes is considerable, two thin bars are used to define the ends of each hole, instead of a single thick bar. The guide plate may consist of first bars 1 with second bars 5 fitted into both faces.
Patent GB-182181-A (GB)
Title: Improvements in or relating to music leaf-holders and the like
IPC: B42D9/00
Filed: 1921-03-23
Abstract: 182,181. Clough, L. D. March 23, 1921. Leaf - holders. - A weighted and pivoted leaf-holder b is provided with a fork or other attachment e to hold back the leaves it is not desired to turn when the holder b is moved by turning the top leaf.
Patent GB-973204-A (GB)
Title: Improvements in automatic gas-burning arrangements for heating installations
IPC: F23D14/36
Filed: 1963-03-07
Abstract: 973,204. Gas burners. H. MAILE. March 7, 1963 [March 14, 1962; Aug. 4, 1962], No. 9042/63. Headings F4F and F4T. A gas burner comprises a pilot flame chamber 35 surrounded by an annular gas chamber 21 surrounded by an annular air chamber 25, the pilot flame chamber being formed on the end of an inner cylindrical chamber 16 accommodating an ignition electrode 15 and a thermocouple 19. Gas is supplied by pipes 12, 48 to the cylindrical chamber 16 and air is supplied thereto through an aperture in an end disc 38 of the chamber. The other end of the chamber is closed by a disc 17 having a flame opening 18. Gas is supplied to the annular chamber 21 by a pipe 13 and passes through apertures 22 into an annular mixing chamber 30 supplied with air through holes 28 controlled by a U-shaped ring 26 having holes 27 and movable on the outer wall 24 of the annular gas chamber 21. The mixture passes through a sieve ring 29 into a combustion chamber 34 formed by a nozzle 31. Air flows from the air chamber 25 into the nozzle 31 and is controlled by moving the nozzle 31 longitudinally to alter the gap between the inner edge of the nozzle and the U- shaped ring 26. The air is supplied by a blower and is controlled by a valve. A switch may be actuated by the air valve or by an air flow indicator to control an electromagnetic valve controlling the gas supply. In a modification, Fig. 4 (not shown), the outer wall of the annular gas chamber extends beyond the end of the pilot flame chamber to form a second mixing chamber and the extension comprises a lattice jacket located on a perforated sleeve. The webs of the lattice jacket are bent to cause turbulence of the gas mixture. An oblique deflector ring is set up in the first mixing chamber. In a second modification, Figs. 6, 7, 8 (not shown), two annular gas chambers are provided and are fed separately through electromagnetic valves. Both chambers discharge into a single mixing chamber. The blower has an air inlet valve adjusted by an electromagnet. A limit pin determines the maximum opening of the valve. Two or more burners, as described, may be arranged side by side, the jackets of the burners having openings to allow the combustion chambers and the air chambers to communicate, Figs. 9-12 (not shown). The blower and blower motor may be secured to the jacket of the burner or may be remote therefrom and connected thereto by a conduit. The burner jacket has a transparent plate.
Patent GB-1124707-A (GB)
Title: Analogue-to-digital converters
IPC: H03M1/00
Filed: 1967-02-24
Abstract: 1,124,707. A/D converters. SIEMENS A.G. 24 Feb., 1967 [25 Feb., 1966], No. 9068/67. Addition to 1,076,811. Heading G4H. The analogue input is supplied to an amplifier having an integrating capacitor from which charge increments are subtracted when the output of the integrator exceeds a threshold level, the size of the increments varying linearly with the number of times the threshold is exceeded within a preset measuring period. The measuring period is determined by a timer enabling a counter for the preset time interval. The counter receives the output pulses from the threshold detector and determines, by way of a D/A converter, the voltage to which a capacitor is charged. Each time the counter receives a pulse, the last-mentioned capacitor is switched to the amplifier to decrement the integrated charge, the size of the decrement increasing linearly with the count registered. The digital output is proportional to the square-root of the input. The size of the charge increments may be held constant until a predetermined count has been attained.
Patent GB-559512-A (GB)
Title: Improvements in and relating to electrical energy distribution systems and protective arrangements therefor
IPC: H02H7/30
Filed: 1943-06-07
Abstract: 559,512. Protective cut - out arrangements. WHIPP & BOURNE, Ltd. and WHIPP, I. T. L. June 7, 1943, No. 9075. [Class 38 (v)] In a supply system fed by a shunt-wound D.C. machine or like source and sectionalized by time-graded, electrically-operated and maintained overload breakers, and including, further, parallel sections of similar time-lag, the parallel sections are provided with means for increasing the time-lags when, on fault in one such section, the system-voltage may be so reduced as to cause release of all the other breakers. The .invention is shown in its application to the system of Specification 521,073 in which the overload relay 35 short-circuits at 25 the holding coil 20 which releases the breaker 16, 17 in a time dependent on the value of the external resistance 21 in the holding-circuit. Further contacts 36, 37 are adapted to be opened on overload by relay 35, but such contacts in the sound feeders remain closed whereby, when the no-volt coil 26 operates and closes contacts 27, the coil 20 is directly short-circuited and its time-lag increased due to exclusion of resistance 21. A contact 32 is changed over by the opening of breaker 16, 17 so as to isolate the contacts 27 and short-circuit resistance 22. A trip switch 28 and closing switch 31 are provided.
Patent GB-352047-A (GB)
Title: Improvements in metal rolling
IPC: B21B13/04
Filed: 1930-03-21
Abstract: 352,047. Rolling. TYTUS, J. B., 300, South Main Street, Middletown, Ohio, U.S.A. March 21,1930, No. 9139. [Class 83 (iv).] Plates heated in a furnace 1 are sheared to size at 2 and are passed through continuous rolls 3 to 7 to make sheets, some of the rolls being cooled by water spray pipes 8. The sheets are then collected into packs and enter the double furnace 9, the packs are sheared to size at 10 and pass through water sprayed discontinuous rolls 11 to 15, reheating furnaces 16 being provided between the rolls. The packs may be manipulated to keep them in loose condition between the rolls. Reference has beeen directed by the Comptroller to Specification 256,798, [Class 83 (iv), Metals, Working].
Patent GB-949983-A (GB)
Title: Method for the preparation of gem-dinitro compounds
Inventor: KLAGER KARL
IPC: C07C205/02
Filed: 1961-03-13
Abstract: Dinitro compounds are prepared by adding a solution of an alkali metal nitrite to a mixture of a solution of an alkali metal hydroxide and a mononitro compound, and then adding the mixture to a solution of silver nitrate while maintaining the pH at from 4 to 5. In an example sodium hydroxide solution is mixed with 2-nitropropane, a solution of sodium nitrite is added, and the mixture is poured into a cooled solution of silver nitrate; the precipitate which forms is removed and the solution is extracted with ether and 2,2-dinitropropane is recovered from the ether extract. Other dinitro compounds which may be prepared from corresponding mononitro compounds are 2,2- dinitroethane, 2,2-dinitrobutane, 2,2-dinitroethanol, 2,2-dinitropropanol, 2,2-dinitrobutanol, 1,1-dinitrocyclopentane and 1,1-dinitrocyclohexane.
Patent GB-348299-A (GB)
Title: Improvements in or relating to the production of rubber composition
IPC: C08K3/04
Filed: 1930-03-21
Abstract: In the production of electrical insulating materials having a basis of rubber, limited proportions of carbon black having high absorptive properties are added to improve the electrical properties of the materials.  Best results are secured with an amount of carbon black not exceeding approximately 10 per cent by weight on the total rubber content (crude rubber plus the rubber content of any reclaimed rubber in the compound).  Several examples are given, one of which contains in parts by weight 409,0 rubber (smoked sheets), 250,0 Champion reclaim (acid-reclaimed rubber), 90,0 zinc oxide, 200,0 mineral rubber, 5,8 antioxidant (agerite), 20,0 carbon black, 1,0 tetramethyl-thiuram-monosulphide, 22,0 sulphur.  It is stated that the carbon black may replace zinc oxide in compositions containing it.
Patent GB-123668-A (GB)
Title: Improvements relating to Ejector or Injector Apparatus for Withdrawing Liquid from a Condenser.
IPC: F01B25/00
Filed: 1918-06-04
Abstract: 123,668. British Westinghouse Electric & Manufacturing Co., (Assignees of Schmidt, H. F.). March 20, 1918, [Convention date]. Overflow arrangements.-An injector apparatus for withdrawing condensate from a condenser is provided with a return-flow pipe between the delivery side of the apparatus and the condenser, to minimize the resistance to overflow discharge at starting. The invention is described in connexion with a surface steam-condenser 5, the injector being operated by exhaust steam entering through a nozzle 8. Liquid from the hotwell 6 flows past a non-return spring-loaded valve 18 into the suction-chamber 10, and the overflow chamber 13 is connected with the condenser through a pipe 14 fitted with a check valve 20. At starting, the overflow passes back into the condenser and is further cooled, until a jet is produced sufficient to overcome external pressure in the discharge pipe 16. Should the jet " break " during full working, the valve 18 closes and liquid is forced back into the condenser. The subsequent vacuum in the suction chamber 10 produces evaporation and cooling of any remaining liquid in the suction chamber, with a consequent rapid condensation of the steam when the valve 18 re-opens. In a modification, the valves 18, 20 are omitted. A live steam nozzle may be employed in placed of or in addition to the exhaust steam nozzle, and the injector may be used for systems working above atmospheric pressure.
Patent GB-591764-A (GB)
Title: Processes and apparatus for tempering glass
IPC: C03B27/06
Filed: 1943-06-09
Abstract: 591,764. Tempering glass. HOLOPHANE, Ltd. (Holophane Co., Inc.). June 9, 1943, No. 9267. Drawings to Specification. [Class 56] Glass articles having one plane and one prismatic surface, or having one surface enamelled, are tempered by heating them approximately to softening point and then blowing cold air against the two surfaces, more air being applied to the face having the prismatic surfaces or the enamel coating than to the other to secure equal rates of cooling at both. Apparatus for carrying out the cooling comprises two sets of nozzles for directing air on to the two faces of the article and either (a) means for supplying air at different pressures to them for traversing the article substantially between the two sets, or (b) means for maintaining the same air pressure at both sets and for traversing the article closer to one set than to the other.
Patent GB-1387693-A (GB)
Title: Method and apparatus for machining boards and the like for  printed circuits
IPC: B23P25/00
Filed: 1972-02-29
Abstract: 1387693 Method of drilling P A VAYDA 29 Feb 1972 [3 March 1971 17 May 1971] 9376/72 Headings B3B and B3C [Also in Division B4] In forming a hole, e.g. in a printed circuit board the board at least in the region of the hole is subjected to cryogenic conditions before and/ or during treatment, e.g. by punching, to render the material brittle. Boards P 2  from a magazine (1), Fig. 1 (not shown), may be fed in turn through a refrigeration chamber (3) by a slide device (2) to punching means, Fig. 2 (not shown),  or the hole may alternatively be drilled. Cooling may be effected by immersion in liquid nitrogen, e.g. 15-20 seconds.
Patent GB-253078-A (GB)
Title: Uniformly loaded signalling conductors for the transmission of currents of acoustic frequencies
IPC: H01B11/14
Filed: 1926-04-09
Abstract: 253,078. Felten & Guilleaume Carlswerk Akt.-Ges. June 8, 1925, [Convention date]. Metal ribbon and tape.-A cable conductor is wound with magnetic material which is drawn to a fine wire of circular cross-section and then reduced by rolling to a band of the same crosssectional area. For example. a wire of a diameter of 0.2 mm. is rolled to a strip 0.6 x 0.05 mm.
Patent GB-1491907-A (GB)
Title: Water-stops
IPC: G04G21/00
Filed: 1975-03-06
Abstract: 1491907 Waterstops BURMAH INDUSTRIAL PRODUCTS Ltd 5 Feb 1976 [6 March 1975] 9463/75 Heading E1B A water-stop 1 of the surface type in combination with a series of fasteners 6, comprises an elongated extruded strip of rubber or elastomeric plastics material having extended along one face, two or more keying ribs 2, 3 at least one of is located on each side of the centre line 4, and wherein recesses 5 are provided in the face of the strip opposite to the ribs, the recesses extending into but not through, at least one rib 2, 3 on each side of the centre line 4 and being arranged in use to receive the fastening 6 for fixing the water-stop to shattering. The fasteners 6 which comprise an extruded plastics or metal (aluminium) strip are fastened to the shuttering by rails 11. A triangular cross-section rib 4 indicates the centre line of the waterstop. The recesses 5 are of dove-tailed or other undercut cross-section.
Patent GB-673442-A (GB)
Title: New ether and process for the production thereof
Inventor: SUTER HANS
Filed: 1950-04-18
Abstract: The invention comprises glycerol a -(2 : 4 : 6-trimethylphenyl) ether and its preparation from mesitol and glycerol or a -monohalohydrin. In the examples: (1) a mixture of mesitol, glycerol and anhydrous sodium acetate is heated in a current of hydrogen; (2) mesitol is converted into its sodium derivative and heated with glycerol a  - monochlorhydrin.  Specification 625,216 is referred to.
Patent GB-1236336-A (GB)
Title: Improvements in or relating to group delay equalisers
Inventor: WARDROP BRIAN
IPC: H01P1/18
Filed: 1969-02-21
Abstract: 1,236,336. Delay equalizers. MARCONI CO. Ltd. 11 Nov., 1969 [21 Feb., 1969], No. 9526/69. Heading H1W. A group delay equalizer is formed by a cruciform waveguide structure 1, 2, 3, 4, the ends 1 and 3 being open, the other two ends being closed to form resonant cavities with strip conductor irises (6 and 7, Fig. 1, not shown) and a directional coupler formed by a 45 degree slab 5 of dielectric material arranged in the common volume of intersection of the two waveguide arms. As shown, slab 5 divides the input energy between the two resonators, and divides the reflected energy from the two resonators between the input and output open ends; the waves suffer a 90 degree phase change upon reflection by the slab 5, and a phase change #, dependent upon frequency, upon reflection by a resonant cavity, to provide on output E + G in the output guide 3, while the two waves H and I reflected into the input guide 1 are 180 degrees out of phase and cancel one another out.
Patent GB-1103546-A (GB)
Title: Improvements in electrical control systems
Inventor: SIMS CHARLES WILSON
IPC: G05D23/22
Filed: 1964-03-06
Abstract: 1,103,546. Automatic temperature control systems. WILD BARFIELD Ltd. March 3, 1965 [March 6, 1964], No.9583/64. Heading G3R. In a furnace temperature control system of the type comprising an operating coil 1 for varying the heat supply consequent upon the opening or closing of contacts 2 whose operating coil (not shown) is supplied by a main thermocouple (not shown) in the furnace, a safety arrangement comprising members 3...10 is provided to prevent the furnace from exceeding a predetermined temperature should contacts 2 fail to open, the arrangement thereafter functioning to control the furnace at its normal predetermined temperature. Thermocouple 4 and operating coil 5 are chosen to produce operation of contacts 3 at the same temperature as for contacts 2, but contacts 3 are normally maintained closed by energization of a relay 8 (through push button 10 and holding contacts 9) which opens a contact 7 to insert a bias resistance 6 in series with coil 5 and so increase its temperature setting. Permanent closure of contacts 2 produces opening of contacts 3 when a predetermined excess temperature has been reached and consequent shorting of resistor 6 to allow members 3, 4, 5 to subsequently control coil 1 at the normal furnace temperature setting. Warning devices may be included, and protection against low temperature conditions or failure of coil 1 and/or associated apparatus is envisaged. The circuit of Fig.1 may be modified by omitting the normal temperature control members, i.e. main thermocouple, contacts 2, and using the safety arrangement to heat the furnace up to a predetermined excess temperature and then maintain it at a predetermined lower temperature, Fig. 2 (not shown). Application of the invention to potentiometer bridge type control systems is discussed, and mention is made of arrangements in which the bias resistor is inserted in the safety circuit instead of being cut out, when a predetermined temperature has been reached.
Patent GB-125819-A (GB)
Title: Improved Apparatus for Anchoring Mines from a Submarine Boat.
Inventor: REY JEAN
IPC: B63G8/33
Filed: 1918-06-13
Abstract: 125,819. Rey, J. June 13, 1918. Laying mines.-Relates to apparatus for launching mines from submarine vessels down an inclined guideway, and consists in providing means whereby the main can change its inclination while still guided. In the form shown in Fig. 1, the mine a has a pair of rollers b, c running in a pair of inclined channelled rails d, and is held up by a fastening device e, e<1> until the moment of laying. When one pair of rollers leaves the. rails, the mine can swing as shown in dotted lines before it is completely free from the guides. The hull f of the vessel is provided with a door g, h. Fresh mines are supplied to the inclined guideway by means such as shown in Fig. 4, comprising a pair of horizontal rails i joining with the inclined rails d at j. This Figure also shows a chain l for feeding and dropping the mines instead of the fastening jaws e<1>. In a modification, the mine has three pairs of rollers, and the guiding-rails have a gap at the bend j and another gap at the lower end of the rails d.