baber/WOPTO huggingface dataset:
Patent GB-478484-A (GB)
Title: Improvements in roofs
IPC: E04B7/12
Filed: 1937-06-04
Abstract: 478,484. Metal roofs. KRUPP AKT.- GES., F. June 4, 1937, No. 15526. Convention date, June 22, 1936. [Class 20 (iv)] A roof comprises parallel trusses 2 constructed without upper and lower booms, and a metal skin 1 which extends alternately between the upper edges of adjacent trusses and between the lower edges thereof, so that alternate roof surfaces are at different levels. The metal skin 1 is subdivided into individual strips which are each of a width equal to the distance between adjacent trusses and are attached by welding, riveting, or other means, to the vertical and diagonal members 4, 15 constituting the trusses 2. The skin 1 is relied upon to take the place of the absent booms of the trusses. The upper and lower edges' of the trusses 2 are interconnected by beams 3 which are connected in pairs by the vertical members 4 of the trusses 2 and by diagonal struts 5. Windows or ventilation openings may be provided in the trusses 2. The metal skin 1 may be corrugated or ribbed.
Patent GB-740541-A (GB)
Title: Improvements in and relating to the production of organic oxygen-containing compounds
Inventor: TAYLOR ARTHUR WILLIAM CHARLES
IPC: C07C27/22
Filed: 1952-06-20
Abstract: Oxygen - containing organic compounds, especially aldehydes, are made by the carbonylation of olefinic compounds at elevated temperature and pressures, the metal carbonyl compounds used as catalysts being generated in a separate stage by reaction of a metal with a gas containing CO in the presence of olefinic feed or an inert liquid medium their rate of generation and rate of feeding to the carbonylation zone being controlled by adjusting the molar ratio of H2 : CO of the gas used in the generation stage within the range of 10 : 90 to 30 : 70, the partial pressure of CO therein being maintained at more than 50 atmospheres. Alkenes of 2-18 C atoms in the molecule are a preferred feedstock.  Preferably in the generation stage CO or CO and H2 are used free of diluents such as N2.  Cobalt catalysts are preferred and generation temperatures of 50-160 DEG , preferably 120-140 DEG  C., are chosen when they are used.  When the generation and carbonylation stages are effected at low cobalt concentrations, e.g. up to 1.5 per cent, the rate of generation is slowed down by increasing the proportion of H2 in the generating gas. Pressures of 70-300, preferably at least 100, atmospheres are used in the generation stage.  Desirably during generation the gas : liquid volume ratio should not exceed 100 : 1.  In examples: (1) di-isobutene is passed to a generator containing metallic cobalt on pumice or magnets, treated with a gas consisting of 25 per cent H2 and 75 per cent CO at 100 DEG  C. and 250 atmospheres with a gas : liquid volume ratio of 40 : 1 to maintain the initial cobalt concentration at not more than 1.0 per cent; and (2) preheated high-boiling oxygenated compounds obtained in the carbonylation of di-isobutene are passed into a generator containing metallic cobalt on permanent magnets and treated with a gas consisting of 12 per cent H2 and 88 per cent CO at 120 DEG  C. and 250 atmospheres with a gas : liquid volume ratio of 200 : 1 to maintain the initial cobalt concentration at at most 1.5 per cent.  Specifications 631,316, 644,665, 670,423 and 702,242 are referred to.  In the Provisional Specification no limits are laid down for the ratios of H2 : CO or for the partial pressure of CO in the generation stage.
Patent GB-236911-A (GB)
Title: Improvements in electron discharge apparatus and circuit arrangements therefor
IPC: H03F3/02
Filed: 1925-06-16
Abstract: 236,911. British Thomson-Houston Co., Ltd., (Assignees of Warner, J. C.). July 11, 1924, [Convention date]. Thermionic amplifiers.-An amplifying circuit employing a four electrode valve comprises, in the output circuit, an impedance connected between the anode and the space charge grid with an intermediate point of the impedance connected through a source of current to the cathode. In the circuit shown in Fig. 1, which can be used for varying direct current or for alternating current, the input is connected across an ohmic resistance 6 which is connected to the cathode 2 and control grid 4. An impedance made of two ohmic resistances 7, 8 has one terminal 12 connected directly to the anode 3 and the other 13 to the space charge grid 5 through an ohmic resistance 9. The cathode 2 is connected through a source of current 10 to a point between the two resistances 7, 8. A load circuit containing an indicator or current utilizing device 11 is connected to the terminals 12, 13. Tn operation, the values of the resistances 7, 8, 9 are so adjusted that when no voltage is applied to the control grid the currents flowing through the resistances 7, 8 are of such a value that the points 12, 13 are at the same potential. When the potential of the grid 4 is raised or lowered the currents through the two resistances 7, 8 vary in the opposite sense so that the voltages of the terminals 12, 13 became different and current passes through the load circuit. In a modification, designed for alternating current, the input circuit contains the secondary of a transformer. and the impedance in the output circuit is in the form of two choke coils wound on a common core. Specification 179,568 is referred to.
Patent GB-1215538-A (GB)
Title: Improvements in or relating to tessellated contour-core blanket and machine for manufacture thereof
Inventor: SHOOK GERALD DAVID
IPC: E04F13/08
Filed: 1968-04-01
Abstract: 1,215,538. Laminating. BALSA DEVELOPMENT CORP. 1 April, 1968, No. 15616/68. HeadingB5N. A laminate comprises an open mesh of non- stretchable, flexible woven or non-woven scrim material, e.g. of non-woven glass fibres, and a layer of individual blocks adhesively secured to the mesh, the adhesive being such that a block may partially detach itself from the mesh when it and an adjacent block are constrained to assume different orientations, e.g. when the laminate is urged against a complexly contoured surface. The adhesive may be applied along a number of spaced, parallel lines and may be a polyacrylic material. The blocks may be of balsa wood or of foamed plastics material, e.g. polyurethane or p.v.c. The mesh, which is dimensionally stable and has three axes of high strengh, may be of three sets of parallel fibres, each set being at 60 degrees to the other two. The layer of blocks is intended for use as a core layer between two facing sheets, which may be of plastics material or reinforced fibreglass, and the mesh is merely for maintaining the blocks in layer form prior to their being bonded to these facing sheets. A machine for making the laminate includes a hopper 23, 24 containing a stack of balsa wood planks. An automatically-operated, pneumatically actuated, reciprocating member 25 pushes planks, from the bottom of the stack, down a vibrating shoot 29 and on to an endless belt. The planks are cut into blocks by a bladed roll 33, the layer of blocks then advancing towards a pressure roller 48. A web of open mesh material is drawn from a roll 17 or 18 and coated with spaced parallel lines of adhesive by rolls 42. Three rolls are provided, the bottom one dipping into a trough and transferring adhesive therefrom to spaced peripheral grooves in the middle roll, the adhesive from these grooves being transferred to the upper roll, which contacts the web. The adhesivelyoated web is bonded to the layer of blocks between the roller 48 and the endless belt. Alternatively, the web may be supplied already coated with pressure-sensitive adhesive, rollers 42 then being dispensed with.
Patent GB-725617-A (GB)
Title: Improvements relating to handle-propelled suction cleaners
IPC: A47L9/14
Filed: 1953-06-05
Abstract: 725,617. Clamps. HOOVER, Ltd. June 5, 1953 [June 6, 1952], No. 15627/53. Class 44. [Also in Group XXVIII] Upper and lower clamping jaws 21, 23 for securing a suction cleaner filter bag (see Group XXVIII) round a pilot tube 24 are of part tubular form and they, together with the tube 24, are pivoted about a pin 22 carried by the cleaner handle 13. Two latches 29 only one of which is shown are carried by the lower jaw 23 and receive studs 29 of the upper jaw in notches 28.
Patent GB-1148311-A (GB)
Title: Improvements in or relating to electric cables
IPC: H01B7/18
Filed: 1966-04-07
Abstract: 1,148,311. Cables. AMPHENOL CORP. 7 April, 1966 [8 April, 1965], No. 15697/66. Heading H1A. The lay of the conductors of a cable is periodically reversed along its length to allow it to be stretched and compressed (e.g. by expansion and contraction of a rocket of missile casing to which it is fixed) without breakage. The conductors are spaced apart to allow for subsequent movement. As described a silicone core is surrounded by a first layer of conductors, a wrapping of P.V.C. tape, a second layer of conductors and a further tape wrapping. Each conductor may consist of a plurality of conductors.
Patent GB-410322-A (GB)
Title: Pump assemblies
IPC: F04D29/06
Filed: 1933-05-31
Abstract: 410,322. Pumping-sets. MORAN, D. J., Lincoln Building, East 42nd Street, New York, and BENNETT, E. O., Ponca City, Oklahoma, both in U.S.A. May 31, 1933, No. 15720. [Class 110 (i).] A centrifugal pump 5 is driven by an electric motor 9 through a coupling 12, the motor and coupling being surrounded by the annular passage 13 through which cooling liquid flows on its way to the pump. The apparatus is shown connected in the pipe line 1, 7 and an oil pump 21 on the motor shaft circulates lubricant from the sump 20 to the bearings by pipes 22, 25 which pass through the cooling fluid. The lubricant returns to the sump 20 by the pipe 26. In a modification the motor is not included in the pipe line, but has a casing closed by end plates carrying the bearings. The pipe 22 which conveys the lubricant to the bearings is located in a cooling jacket supplied with the pumped liquid.
Patent GB-920092-A (GB)
Title: Push-pull amplifier circuits
IPC: H03F3/26
Filed: 1959-05-07
Abstract: 920,092. Transistor amplifying circuits. RADIO CORPORATION OF AMERICA. May 7, 1959 [May 28, 1958], No. 15771/59. Class 40 (6). A class B transistor output stage comprises a pair of transistors in common-emitter connection and driven from a push-pull transformer 32. The collectors are connected to the opposite ends of a loud-speaker speech coil 50 having a centre-tap which is earthed, the supply battery 26 being connected between the emitters and earth. Higher harmonic frequency signals are limited by a condenser 52 connected across the speech coil 50. The D.C. working points of the transistors are stabilized by negative feed-back, utilizing the D.C. resistance of the speech coil, feed-back resistors 56, 58 being connected between the collectors of the transistors and a resistor 54 common to the base circuits. In a modification (Fig. 2, not shown) using NPN transistors, the emitters are earthed and the supply battery connected between earth and the centre-tap on the loud-speaker speech coil. Reference has been directed by the Comptroller to Specification 777,203.
Patent GB-312190-A (GB)
Title: Improvements in radio system and method
Filed: 1929-05-21
Abstract: 312,190. Kolster - Brandes, Ltd., (Assignees of Kruesi, G. G.). May 2L, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Directive signalling; relaying or repeating systems.-A directive beam of " earth bound " waves is radiated from aerials located inside a parabolic reflector. Preferably there are two aerial conductors 12, 13, Fig. 4, mounted at rightangles to each other inside the reflector, so that a substantial part of the radiated energy is polarized horizontally but has an appreciable vertically-polarized component. It is stated that the effective range of reception is between 200 and 500 miles. In order to cover greater distances, a network E - - F of directional relav stations is arranged as shown in Fig. 1. Each station comprises a receiver 1, Fig. 4, the rectified signals from a detector R being used to modulate at M the outgoing carrier wave from a source 18 feeding the aerial system 2. The signal wavelength is preferably four times the focal length of the reflector.
Patent GB-103629-A (GB)
Title: Improved Appliance to enable Printer's Plates to be Accurately Positioned upon a Base.
Inventor: HARDING RICHARD HENRY
IPC: B41F27/00
Filed: 1916-11-06
Abstract: 103,629. Harding, R. H., and Greenaway, A. G. Nov. 6, 1916. Printing surfaces.-An appliance for positioning printing-plates on their bases comprises an expansible frame with means for securing it around the base 7, Fig. 1, and a set of string or wire carriers 12 adjustable on the frame. The strings 17 are stretched across the base as shown, over the printing-plate 21. The frame is formed by L-shaped pieces 1 united by straight pieces 2 of angle-iron having slots for the passage of the securing-screws 4; and is clamped to the base by screws 8 and lock-nuts 9. To maintain the upper face of the base and the upper edge of the frame substantially level, a corner member provided with an overhanging portion 11 is secured to each L-piece. The string-carriers 12 are each formed of a U-member 13, Figs. 6 and 7, grooved at 18 and provided with a clamping-screw 14 and a bifurcated piece 16 for the attachment of the end of the string. When near the edge of the base, the string is attached to a notched extension 19.
Patent GB-685918-A (GB)
Title: Improvements relating to pressure exchangers
IPC: F04F13/00
Filed: 1949-06-14
Abstract: 685,918. Pressure exchangers. JENDRASSIK, G. June 13, 1950 [June 14, 1949; Sept. 9, 1949], Nos. 15884/49 and 23434/49. Class 8 (i). A pressure exchanger comprises two contrarotatable rotors arranged on the same axis and each having cells around the periphery thereof, stationary structure adjacent the rotors and ported to enable scavenging gas flow at least once per working cycle of each cell from externally of the rotors through cells of both rotors in series and means permitting transfer gas flow between the cells of the rotors when scavenging gas flow is not occurring, the transfer gas directly effecting gas compression in cells of one rotor by gas expansion from cells in the other rotor. Rotors 1, 1<SP>1</SP> are mounted for contra-rotation with their end faces 5, 5<SP>1</SP> adjacent a stationary partition 38; each comprises inner and outer cylinders 3, 3' and 3a, 3a<SP>1</SP> and the annular spaces therebetween are divided by partitions 2a into cells which are open at their outside ends 4, 4' and are partly open at their ends 5, 5' where openings 39 for the flow of transfer gas extend over about a half of the circumferential width of each cell. The partition 38 has sector shaped ports 41 to allow the passage of scavenging gas. The outer ends of the cell rotors are covered by stationary end plates 8, 8<SP>1</SP> which have ports 9, 9<SP>1</SP> for scavenging at low pressure and similar ports for scavenging at high pressure. The housing 19 may be maintained at an intermediate gas pressure. In a modification the apertures 39 for the flow of transfer gas are formed in the peripheral wall of the cells, which apertures register with ports connected by pipes. In another modification similar to the construction shown in Figs. 3, 4, the ports for the flow of transfer and scavenging gas between the cells are at the same radial distance from the axis. Specifications 290,669 and 672,994, [Class 8 (i)], are referred to.
Patent GB-419539-A (GB)
Title: Improvements in or relating to aeroplanes
IPC: B64C1/32
Filed: 1933-06-02
Abstract: 419,539. Aeroplanes. MOBBS, R. O., Trading Estate, Slough, Buckinghamshire. June 2, 1933, No. 15927. [Class 4.] An emergency means of escape from the fuselage of an aeroplane comprises a hatch slidably carried by a frame secured to the fuselage roof and means carried by the frame to secure the hatch in normal closed position. As shown, the hatch slides in guides 14 secured to the frame members 4, 4<a> which are secured to the fuselage roof and form two sides of the hatch opening. The other two sides of the opening are formed by a member 10 and a stream-lined member 8 each provided, respectively, with a gutter 24, 18 having outlet openings. A light-metal member 20 in the gutter 18 holds in place a rubber member 22 ; the member 8 is faced by a strip member 16 and the rear edge of the member 10 is chamfered. The fuselage plating is flanged up as at 12. The hatch comprises a frame covered by two thicknesses of waterproof fabric 25, 27. Each side of the hatch is provided with two flexible metal strips 30, 32. The strip 30 is covered by a strip of felt 34 and slides in the guide 14, a further strip of felt 36 overlays the guide and is engaged by a flexible, e.g. cane rod 40 sewn into the fabric and folded against the underside of the metal strip 32. The front edge of the hatch is formed by a forwardly projecting portion 42 of a frame member 41 and over which extend the two fabric members to engage rods 44, 46, Fig. 3, as shown. The fabric is wrapped around a strip 48 and secured together with a rubber strip 50, to a frame member 45 which engages when the hatch is closed with the chamfered edge. The hatch is held closed by a clip 54 having a wedging action and engaging in a groove in the hatch member 41.
Patent GB-515364-A (GB)
Title: Improvements in or relating to the transmission of electrical signals
IPC: H03G1/04
Filed: 1938-05-30
Abstract: 515,364. Television ; automatic volume control. BLUMLEIN, A. D. May 30, 1938, No. 16084. [Classes 40 (iii) and 40 (v)] Variations in a datum level due to loss of direct-current components or varying attenuation, are reduced by developing a plurality of correcting signals from the datum levels, the variation due to leakage of one correcting signal being compensated by the variation due to leakage of another. Direct-current re-insertion. As shown in Fig. 1, valve 16 and condenser 13 produce re-insertion at the grid of valve 12 as described in Specification 449,242, but leakage occurs over reststance 14 ; this leakage is compensated by a second re-insertion by valve 23 and condenser 19, as described' in Specification 422,906, since the leakage over resistance 20 is in an opposite sense to that over resistance 14. In an alternative, an amplifier 26, Fig. 2, e.g. as described in Specification 482,740, provides two outputs in phase opposition and valves 29, 30 and condensers 27, 28 provide for re-insertion, the valves 29, 30 being rendered conducting only during datum level periods by pulses applied at 42 ; leakage occurs over resistances 31, 32, but this effect is eliminated by applying the leads 33, 34 to an amplifier 39 which is responsive only to push-pull potentials to the exclusion of pushpush potentials. Automatic volume control. An amplifier 45, Fig. 3, provides two outputs in opposite phase, each associated with a voltage-equalizing device, e.g. as described in Specification 512,109, so that condensers 56, 57 are charged by the datum potentials occurring on lines 47, 46 respectively; the datum potentials at 47, 46 should be zero, but if this condition does not obtain, condensers 56, 57 are charged in opposite senses to produce a potential difference at 56a, 57a ; this potential difference will remain unaffected by leakage over resistances 60, 61, and is applied at 77, 78, Fig. 4, to vary the proportion of current taken by each of the valves 71, 72, and so vary the output of 71 amplifying the incoming signal from 70. Since resistance 73 is taken to a large negative potential, equal changes at 77, 78 due to leakage at 60, 61 will have no effect. The effect of the automatic control is to reduce the datum levels in 46, 47 to zero. Specifications 458,585, 515,360, 515,361 and 515,362 also are referred to.
Patent GB-1343257-A (GB)
Title: Granulating apparatus and granulating method
IPC: B01J2/06
Filed: 1972-04-07
Abstract: 1343257 Granulating melts OSAKA GAS KK 7 April 1972 [14 April 1971] 16087/72 Heading C1M [Also in Division B5] Grains are formed from molten material which is solid at room temperature, e.g. pitch, asphalt, glass, synthetic plastics, fertilizers or millet jelly, by storing it in a vessel 1 in which it is kept at constant temperature and liquid level, scooping-up small amounts by powerdriven rotary means which repeatedly dip into it, e.g. the arms 8 on rotating shaft 6, and which then fling it off into a bath of cooling liquid 10 to form rounded solid granules. The granules may be withdrawn from the water 11 by a slurry pump 13 which deposits them onto a sieve 28, the water being returned via the chute 31. The liquid level is maintained substantially constant by a detector 33 and regulator 19 operating a control valve 18 in the outlet from a supply tank 14. Temperature is regulated by a detector 28 and regulator 17 controlling a heat-exchanger 16 by regulating a steam valve 30 and thus controlling the temperature of make-up liquid from the supply tank. A further heat-exchanger may be placed in the molten liquid 2 in the insulated vessel 1. Numerous different forms of arms 8 are shown (Fig. 2, not shown) and two alternative versions of the rotating drum 5 carrying the arms are described. In one, Fig. 3, the arms are spring-loaded 21 and as each arm emerges from the liquid it is temporarily held back against the springs by a resilient stop 22 and then released to accelerate the discharge of the liquid drop. In the other embodiment, Fig. 4, the drum rotates about one axis 24 whilst the arms are rotatable about another 23 so that as they are turned by the rotation of the drum they telescope in or out of two slots in the drum so that their angular velocity is greatest as they emerge from the liquid.
Patent GB-354432-A (GB)
Title: Improvements in or connected with driving mechanism for haulage drums of machines, particularly coal cutting machines and the like
IPC: E21C29/10
Filed: 1930-05-26
Abstract: 354,432. Driving haulage drums; coal-cutting machines. MAVOR & COULSON, Ltd. and MAVOR, J. B., 47, Broad Street, Mile End, Glasgow. May 26, 1930, No. 16088. [Class 68 (i).] In driving mechanism for haulage drums of machines, such as coal-cutting and like machines, wherein two gear circuits are provided for high and low speed drives, provision is made for permitting overrun in the low speed circuit and for making and breaking the high speed circuit, whereby when the high speed circuit is made, overrun occurs in the low speed circuit, and when the high speed circuit is broken, the drive is transmitted through the low speed circuit. A shaft 9 carries a fixed pinion 11 which, through a toothed ring 12 and pawls 15, Fig. 3, transmits a low speed drive to a shaft 14 carrying haulage drums 16. A loose gear 17 is adapted for connection to the shaft 9 by a clutch 18 to transmit a high speed drive through a gear 19, the shaft 14 then overrunning the ring 12. The shaft 9 may be driven continuously or intermittently as through pawl and ratchet means 8, rod 7, crank 6, worm gearing 2 and gears 3, 4, driven from a motor. Provision may be made in a coal-cutting machine whereby the clutch 18 can be engaged only when the cutter member is inoperative. Specifications 268,506, 268,508 and 329,466, [all in Class 68 (i), Excavating earth &c.], are referred to.