baber/WOPTO huggingface dataset:
Patent GB-599437-A (GB)
Title: Improvements in or relating to high molecular weight polymeric materials
IPC: C08F36/04
Filed: 1944-12-12
Abstract: Olefine terpolymers are obtained by polymerization of a mixture of 29-70 per cent by volume of a C3-55 alkene, 20-70 per cent of styrene and 1-10 per cent of a C4-C10 polyolefine at a temperature not exceeding -10 DEG  C. in the presence of a Friedel-Crafts catalyst dissolved in a methyl or ethyl halide.  Isobutylene is the preferred alkene, others specified are propylene, isopentene and n-pentene. Polyolefines specified are isoprene, butadiene, dimethyl p butadienes, piperylene, cyclopentadiene, methyl ethyl butadiene, methyl pentadiene, myrcene, hexatriene and alloocimene.  Coating compositions are prepared by dissolving a minor proportion of the terpolymer in a volatile organic solvent, e.g. benzene, toluene, or, if the styrene content of the terpolymer exceeds 40 per cent, in a drying fatty oil, e.g. linseed oil, or the terpolymer may be applied molten.  It may be added to paraffin wax, petrolatum, natural waxes, asphalts, tars, mineral oils and as plasticiser to rubber and other resins, e.g. isobutylene-isoprene copolymers (see Group V).  Other uses include the making of thin films and adhesives.  It may be vulcanized and/or compounded with fillers, pigments, oil-soluble dyes, antioxidants and plasticisers, e.g. clay, chalk, silica, carbon black, zinc oxide, iron oxide, titanium dioxide, di-o-tert.-butyl derivative of p-cresol, zinc stearate, paraffin wax and petroleum sulphonates.  Specifications 513,521 and 599,484 are referred to.ALSO:Olefine terpolymers are obtained by low-temperature polymerisation in presence of a Friedel-Crafts catalyst of a C3-C3 alkene, styrene and a C4-C10 polyolefine (see Group IV). Isobutylene, propylene, isopentene and n-pentene are specified isoolefines.  Polyolefines listed are isoprene, butadiene, dimethyl butadienes, piperylene, cyclopentadiene, methyl ethyl butadiene, methyl pentadiene, myrcene, hexatriene and alloocimene.  Coating compositions comprise a minor proportion of terpolymer in a volatile organic solvent, e.g., benzene, toluene, or, if the styrene content of the terpolymer exceeds 40 per cent., in a drying fatty oil, e.g., linseed, and the terpolymer may be applied molten.  It may be used as a plasticiser for natural and synthetic rubbers, e.g., isobutylene-isoprene copolymers.  It may be added to increase viscosity to mineral oils and blended with paraffin wax, petrolatum, natural waxes, asphalts and tars.  The terpolymer may be vulcanised and/or compounded with fillers, pigments, oil-soluble dyes, anti-oxidants and plasticisers, e.g., clay, chalk, silica, carbon black, zinc oxide, iron oxide, titanium dioxide, di-o-tert. butyl. derivative of p-cresol, zinc stearate, paraffin wax and petroleum sulphates.  Specifications 513,521, [Group IV], and 599,484, are referred to.
Patent GB-1537215-A (GB)
Title: Axial-flow fan impeller
IPC: F04D29/36
Filed: 1977-06-15
Abstract: 1537215  Axial-flow fans INST GOR MEKHANIKI I TEKH KIBERNETIKI IM MM FEDOROVA 15 June 1977 25114/77 Heading F1C An axial-flow fan impeller comprises swivelling bases 3 secured to a hub 1, two or more blades 2 rigidly fastened to each base and joined to each other by connectors 6, the angular spacing between the blades on a base being 0À15 to 0À3 times the angular spacing α between the pivots 5 of adjacent bases. The blades 2 are laminar, while the connectors 6 are of aerofoil section.
Patent GB-1287322-A (GB)
Title: A method of forming a stable foundation for an edifice
Inventor: ALGERS KNUT BORGE
IPC: E02D27/01
Filed: 1970-05-26
Abstract: 1287322 Foundations for buildings: shores KB ALGERS 26 May 1970 [28 May 1969] 25223/70 Headings E1A and E1E In order to provide for possible subsidence, a grid structure is provided between a building and the underlying bedding, which grid structure may be adjusted in height by e.g. jacks 20, to allow loose packing material to fall through and form a vertical support for the building. The grid structure may be incorporated in the building foundations or may be merely an interposed perforated plate (Figs. 9-11).
Patent GB-247255-A (GB)
Title: A new or improved rope or belt drive for drying cylinders and the like
IPC: F26B13/14
Filed: 1924-10-23
Abstract: 247,255. Dod, G. Oct. 23, 1924. Driving arrangements.-In rope or belt drives for multi-cylinder drying- machines and the like, pulleys a, b, c on the ends of the cylinders 1 - - 13 are arranged in sets in different planes, a separate line of belting or rope a', b<1>, c<1> engaging the pulleys of each set. The ropes &c. engage the overlapping parts of the pulleys, as shown in Fig. 1, or may pass around the outer faces of the pulleys. Preferably, the first, fourth, seventh, &c., or the first, sixth, eleventh, &c., or other odd sequence of the pulleys are arranged in one set, the second, fifth, &c., in the next, and so on. A single power pulley d may drive all the ropes and tension and guiding pulleys e, f, g are provided. Some of the pulleys and their driving rope or ropes may be arranged at the opposite end of the cylinders. In an arrangement of cylinders such as is shown in Fig. 5, a loose pulley j' is mounted on the, spindle of the cylinder 6 where the line of cylinders changes direction and server as a guide to all ropes except that engaging the pulley secured on the cylinder spindle. As applied to a single row of cylinders, each rope engages every third, ninth, fifteenth, &c. pulley. Where one set of pulleys is few in number, the fabric &c. to be dried by passing around the cylinders may be relied on to rotate the corresponding set of cylinders, that particular rope &c. drive being dispensed with. More than one rope &c. may be used to drive each set of pulleys. The cylinder spindles may be supported in bearings of the kind described in Specification 175,368, Class 12 (i), Bearings &c.].
Patent GB-806669-A (GB)
Title: Means for controlling the supply of air to a solid fuel heating appliance
Inventor: KEITH THOMAS HENRY
IPC: F23L1/00
Filed: 1956-08-17
Abstract: 806,669. Air supply for combustion. CHATWINS Ltd. July 19, 1957 [Aug. 17, 1956], No. 25241/56. Class 126 The supply of air to the ash chamber 16, Fig. 1, of a solid fuel heating appliance having an annular water heating jacket 5 around the fuel space is regulated by an adjustable plate 10 connected by a chain &c. 12 to a drum 13 mounted on a shaft actuated by a knob 14. The plate 10 is disposed in a housing 9, Fig. 2, having a wall with slots 11, the flow of air through which to a port 8 in the ash chamber 16 is regulated by the plate.
Patent GB-1195682-A (GB)
Title: Improvements in or relating to apparatus for Testing the Wrappers of Wrapped Rods having Unwrapped Ends
IPC: G01N15/08
Filed: 1966-06-07
Abstract: 1,195,682. Testing cigarettes. MOLINS MACHINE CO. Ltd. and E. S. DOERMAN. 5 June, 1967 [7 June, 1966], No. 25290/66. Heading A2C. In an apparatus of the type in which cigarettes are tested during transport for air leaks in their wrappers whilst being held on the surface of a rotating drum 11, the cigarettes pass through a suction chamber 28 at which point any air flow through the wrapper is sensed. The cigarettes are transferred in known manner from a suction feed drum (6) to cradles 12 on the drum 11 having semi-circular formers 15, 16 on which they are held by guides (32) formed as extensions of the chamber 28. Followers 24, actuated by a stationary cam 27, then close end caps 19 with semi-circular formers 20, 21 about the ends of the cigarettes to hold the cigarettes to the drum 11 and seal off the ends thereof. The cigarettes then pass through the chamber 28, which chamber is connected to a suction source, and any flow of air through the wrappers of the cigarettes is detected in turn by a suction transducer 37 fed via a pipe 36 and, associated with each cigarette position, a hole 34 and a groove 33 leading to a bleed hole 33A in the top left hand (as shown) end cap 19. When testing filter cigarettes, the filter end only of the cigarette may be capped the other end being sealed by a resilient stop. Pressure may be sensed at both ends of a cigarette by the provision of a second transducer (37A) connected to the other end of the cigarette, or both ends may be connected simultaneously to the pipe 36 feeding the transducer 37. Signals from the transducer 37, corresponding to faulty cigarettes, are transferred to a magnetic memory disc and subsequently used to actuate a rejector mechanism (Figs. 1, 4, not shown) which comprises a rotating fluted drum (43) the flutes (44) of which register with the flutes (39) of an adjacent rotating suction drum (38) over their restricted adjacent portions, and, situated behind the position where the flutes (39, 44) are in register, a hole (46) through which an air jet is directed in response to the aforesaid signals. An electromagnetically actuated butterfly valve may be provided to rapidly cut off the supply of suction to the chamber 28 should the apparatus stop for any cause. Accommodation of slight variations in cigarette diameter is provided by the formers 15, 16, 20, 21 being not quite a complete semicircle in shape and being of a slightly larger radius than that of the cigarette.
Patent GB-1136262-A (GB)
Title: Improvements in or relating to the manufacture of sheet material in ribbon form
Inventor: YUEN NG WING
IPC: F15B5/00
Filed: 1965-06-15
Abstract: 1,136,262. Flat glass manufacture. PILKINGTON BROS. Ltd. 20 May, 1966 [15 June, 1965], No. 25301/65. Heading C1M. [Also in Division G1] In the manufacture of sheet material, e.g. glass in sheet form by flowing molten glass 3 on to a bath of molten tin 2, there is provided a pneumatic sensing means 7, including an inner tube located within an outer tube to form an annular nozzle through which gas under pressure is discharged, a pressure-sensitive switch 10 responsive to the back pressure in the inner tube, and pneumatic driving means for reciprocating the nozzle 7 laterally with respect to the edge of the sheet 4. A signal is thus produced indicative of the width of the sheet 3 which is fed through an electro-pneumatic sampling device 13 to appropriate information recording or utilizing apparatus. As shown in Fig. 1, the apparatus is used for determining the position of the lateral edge of a sheet of glass. In this case, the nozzle 7 moves to the edge of the ribbon, whereupon the positive signal recorded by the switch 10 changes to a negative signal which feeds a pulse to the nozzle moving apparatus to reverse the direction of movement of the nozzle 7. Hence the nozzle is reciprocated across the width of the ribbon. The results are fed to a pneumatic recording device 14 where they are shown graphically. To measure the width of the strip probes are provided at each edge and the two results are either shown graphically at 14 or averaged. Details of the electro-pneumatic circuit are described with reference to Figs. 4 and 5 of the drawings. If a large lump of glass impinges against the nozzle 7, the probe rotates actuating a guard switch 99 which operates a probe retraction device, the probe being spring returned to its initial position. In a modification, the apparatus is arranged so that any deviations of ribbon width from the desired dimension actuate means to move a fender to steer the ribbon to the correct position. In the width measuring device, the signal may be fed to adjust the inflow of molten glass to maintain the ribbon width constant, i.e. by either adjusting the drawing roller (124) spacing or speed of rotation and/or the height of tweel (122). Alternatively, the temperature may be controlled.
Patent GB-1146499-A (GB)
Title: Improvements in and relating to tyre building apparatus
IPC: B29D30/36
Filed: 1966-06-07
Abstract: 1,146,499. Tyre-building drums. DUNLOP CO. Ltd. 7 June, 1966 [16 June, 1965], No. 25302/66. Heading B7C. Apparatus for shaping a cylindrical tyre cover before application of breaker and tread includes pivoted arms 9 located exteriorly of a shaping diaphragm 5 and provided with bead supporting end portions 10 movable radially outwardly to centre the beads and to allow rotation thereof about the bead core axes during shaping. The portions 10 may include friction rollers (32) (Figs. 11, 12, not shown). Pivoted arms 33 with rollers 35 may be provided within the diaphragm for initial support and centring of the diaphragm 5, and to assist in supporting the tyre sidewalls and in causing rotation of the beads about their core axes.
Patent GB-263958-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1925-10-10
Abstract: 263,958. Automatic Telephone Manufacturing Co., Ltd., (Automatic Electric Co.). Oct. 10, 1925. Addition to 169,698 and 195,928. Automatic and semi-automatic exchange systems. - Relates to improvements in secondary non-numerical switches of the kind described in the parent Specifications, which are only selectable when in engagement with idle trunks. The relays of all the secondary switches are arranged in a relay rack, and are connected through a terminal assembly TA to the multipled terminals of the selectors, and through a distributing frame IDF to the actual switches such as SS, cross-connections being made to connect the trunks in the primary sub-groups with the switches in the desired secondary sub-groups. Fig. 1 shows the first and last trunks T-1, T-10 of a primary sub-group, provided with a chain relay 19 to start hunting when only one switch of the sub-group is standing on an idle trunk. Relay 19 energizes.partially when all but one of the resistances. such as 10 is cut out and connects up a start relay 20, which completes the driving circuits of all the idle switches of the primary sub-group. When all the resistances are cut out, relay 19 energizes fully and operates a statistical meter M. Fig. 2 shows the first and last trunks T-1<1>, T-10<1> of another primary sub-group, in which the last trunk T-10<1> is not associated with a switch, and traffic thereover is diverted over wires 31 - - 33 to the trunk T-10. The chain and start relays of the two sub-groups are therefore connected up in such a way that the trunk T-10 forms a unit of both of them. Fig. 3 shows one switch SS of a group of eighty, which are arranged in four shelves of twenty, each shelf comprising two secondary sub-groups and being provided with one battery-feed relay such as 211 and two cut-off relays such as 215, 216. When all the outgoing trunks are in use, the cut-off relays such as 215, 216 energize in a chain circuit to prevent hunting. When, owing to congestion, an excessive number of switches of any shelf start hunting, a switch CS is brought into action to control the hunting operations. The relays such as 211 may be adjusted to energize when more than three switches of a shelf start hunting, and when this occurs, relays 231, 232 energize over wire 213 and lock, connecting up all the cut-off relays such as 215, 216 and energizing relay 220. The magnet 233 now operates under control of sluggish relays 218, 219 to rotate the switch CS slowly. At the second step, cut-off relay 215 is released by short-circuiting over wiper 268, and any of the ten associated switches of the first sub-group may hunt. At the next step, relay 215 is again energized and relay 216 is released to free the switches of the second sub-group, and so on, the operation being repeated if necessary. Relays 231, 232 are unlocked after the cut-off relays they control have been released, and fall back provided battery has been removed from wire 213.
Patent GB-659555-A (GB)
Title: Improvements relating to bricks and other building blocks
IPC: E04B2/02
Filed: 1949-10-03
Abstract: 659,555. Bricks; walls. BEANLAND, F D. Oct. 3, 1949, No. 25365. [Classes 20(iv) and 87 (i) A brick 10 in. having a central aperture 12 and corresponding end grooves 11 is provided on its upper and lower faces with at least one tongue 13 and one groove 14. In the form shown in Fig. 3, adjacent tongues and grooves are provided centrally and near the front and rear faces. In a modification, only the central tongues and grooves are provided and a transverse groove is provided in the upper face to receive a wire tie in a cavity wall. In a further modification, a separate tongue and groove are provided near the front and rear faces. A corresponding header brick 20, Fig. 4, is provided with two apertures 23 and transverse tongues 21, and grooves 22. In a corner brick 40, Fig. 5, for a single brick or cavity wall, the aperture 42 is connected by a groove 46 to a groove 45 and by tongues 43 and grooves 44 to a groove 41. A corner brick for a double brick wall is of L-shape with a vertical groove in two faces. Various wall constructions are shown employing these bricks.
Patent GB-655038-A (GB)
Title: Improvements in and relating to method and apparatus for treating gases by means of a washing liquid
IPC: B01D47/10
Filed: 1947-09-17
Abstract: 655,038. Washing gases. PEASE, ANTHONY EQUIPMENT CO. Sept. 17, 1947. No. 25384. Convention date, Nov. 8. 1946. [Class 55(ii)] Fine suspended matter is removed from gases by treating a stream, accelerated to a velocity of e.g. over 200 ft. per sec. with a perpendicularly directed liquid preferably in jet form, so as to cause the gas to break up the liquid into fine droplets, e.g. below 100 microns in diameter, which are then separated from the stream. Gases, which may be pre-humidified, are directed through a venturi 18 into the throat of which washing liquid is discharged through a number of radial nozzles supplied from a manifold 24. Some of the nozzles may extend into the duct to ensure uniform distribution, and outwardly directed discharges from an axial pipe may also be provided. The expansion section 20 of the venturi may discharge tangentially into a separator 40 which may include spray nozzles 44 for a further washing stage employing the same or different liquid. The separator may embody a counter-current cooling tower. To vary the venturi dimensions, a passage of rectangular section may have an adjustable wall to vary the throat section and a sliding extension to change the length of the expansion section. Specification 389,462, is referred to.
Patent GB-1174566-A (GB)
Title: The Production of Electron Beams, for Example for Electron-Beam Welding Processes
Inventor: BEADLE REGINALD
IPC: H01J37/075
Filed: 1966-06-07
Abstract: 1,174,566. Electron beam apparatus. VICKERS Ltd. 7 June, 1967 [7 June, 1966], No. 25412/66. Heading H1D. In a process of welding or inspecting a workpiece by means of an electron beam, the electron gun with large area cathode 8, shield electrode 2 and anode 6 is operated so that only an inner portion amounting to not more than one-half of the emissive area of the cathode is actually emitting electrons. The effective emissive area is thus insensitive to lateral displacement of the cathode itself. The cathode 8 is heated by electron bombardment from an auxiliary gun 3, 4, stray electrons being prevented from reaching the shield electrode 2 either by mounting the cathode 8 on a conical support of refractory material or by the interposition of a conductive plate 5. The diameter of the cathode 8 may be 2-3 mm. The process of inspecting a workpiece may be that disclosed in Specification 24951/66.
Patent GB-1273537-A (GB)
Title: Improvements in or relating to jet propulsion units
Inventor: KERSHAW HERBERT ARTHUR
IPC: F02C6/20
Filed: 1968-05-28
Abstract: 1,273,537. Jet propulsion plant. H. A. KERSHAW. May 6, 1969 [May 28, 1968], No.25433/68. Heading F1J. The invention relates to a ducted fan type jet engine wherein the fan is driven by a gas turbine engine which comprises a gas compressor in which the working gas is cooled during compression the gas then being heated during expansion and used to drive a turbine which drives the fan, the exhaust gas from the turbine being returned to the gas compressor. In the embodiment shown the ducted fan is indicated at 1 and is driven by a gas turbine engine 2 of the jet compressor type. The compressor comprises an entraining chamber 9a in which a plurality of nozzles 18 are disposed which act to entrain air and direct it through venturi tubes 10a, the air so pressurized passing to inlet manifold 12 and thence to turbine 11 which is connected to drive the ducted fan 1. The air discharging from the turbine passes to exhaust chamber 8 and then passes back through ducts 13, 14 to the entraining chamber 9a to repeat the cycle. A portion of air discharging from each venturi tube 10a is tapped off through duct 17 and passes under control of valve 19 to the ejector nozzle 18 so acting to entrain air in chamber 9a. Each venturi tube 10a is enclosed in a casing 16 and has a heating unit 15 such as an electric heater associated therewith. Alternatively the air in the venturi tubes may be heated by passing electric current through the tubes. The heaters may be used only at starting, it is stated. Air from the ducted fan 1 passes to a nozzle assembly 3, 4, 5 from which air may be directly either rearwardly through nozzle 4 for forward thrust or downwardly through nozzle 5 for vertical lift, air being deflected towards nozzle 5 by control jets 3a supplied with air under pressure from air compressor 6. A deflecting lip 3a is also provided. The air discharging through nozzle 4 may be heated by means of electrodes 22 mounted on trunnions 23, the electrodes discharging electricity from their rearward ends through insulated ducts 24. Many alternative arrangements are described.
Patent GB-534664-A (GB)
Title: Improvements in or relating to screens
IPC: B07B1/48
Filed: 1939-09-08
Abstract: 534,664. Sifting-apparatus. HELLER, R. D. Sept. 8, 1939, No. 25442. Convention date, Oct. 8, 1938. [Class 117] In high-speed vibratory screens, the screencloth consists of parallel wires 44 secured at their ends to anchoring bars 43. and is attached to the frame by interlocking the bars with channel members 62. As shown, one edge of a bar 43 rests on an abutment 65 and bears on the bottom of the channel, and the other edge bears against the opposite flange of the channel and a rectangular ledge 64 welded in the angle of the channel. One of the attaching members may be carried by a channel member 54 which hinges about an abutment 56 on the frame and is drawn up by bolts 57 to tighten the screencloth, which is supported at points across its width by longitudinal ribs 39 carrying wood strips 41. The frame consists of side channel members 36 connected by cross ties and provided with strengthening webs 67. It is clamped at the mid point of springs mounted in a base frame and actuated by electromagnets energized by alternating or pulsating current. The base frame is suspended by rods with a resilient attachment to a supporting structure. The wires 44 of the screen-cloth are of high carbon steel and are attached by binding round the side of the anchor bars 43 and securing thereto by tin strips and soldering. The surface of the bars is roughened by the provision of longitudinal transverse or diagonal grooves. At points corresponding to the supporting ribs 39, the wires are connected by longitudinal tin strips and soldering, and rubber, &c. cushions are provided at the parts at which the cloth bears on the frame. Specification 534,665 is referred to.