baber/WOPTO huggingface dataset:
Patent GB-754095-A (GB)
Title: Improvements in or relating to a hydraulically actuated adjustable-pitch propeller
IPC: B64C11/40
Filed: 1954-12-15
Abstract: 754,095. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. Dec. 15, 1954 [Dec. 28, 1953], No. 36288/54. Class 114. In a propeller comprising a hub 16, adjustable - pitch blades 10 mounted on the hub, a doubleacting hydraulic motor comprising a cylinder 30 and a piston 32 operatively connected to said blades, lines 98 and 104 for supplying hydraulic fluid under pressure to the motor for moving same to change the propeller pitch, a valve 96 for changing the application of fluid pressure from one side to the other of the motor to change the direction of movement thereof, and means including seals 70, 72, 74, 76, 82, sealing the interior of the hub from the motor, a valve housing 56 having fluid distributing passages therein includes a valve cage 118 in which a valve 128 is movable by a predominance of pressure in either of said lines to block that line from the hub interior and connect the other line with the hub interior. The engine lubricating pump 84 supplies engine oil to a conduit 88 leading to a high pressure pump 100. A doubleacting governor 90 driven from the engine 14 by the gear 106 controls the movement of the valve 96 to connect one or other of the lines 98, 104 to the high pressure output of the pump 100 and the other to the engine oil pressure in conduit 88. With the members in the position shown in Fig. 1 high pressure fluid is supplied to line 98 and from thence into passage 66, through orifice 112, passages 114, orifices 116, to the interior of tube 50 leading to the outboard side of the piston 32. The valve 128 will be seated as shown in Fig. 2 so that the interior of the hub is connected via a groove 120 through line 124, groove 126, passages 142, passage 146 formed by a flat on one side of the valve stem 130, chamber 148 and chamber 108 with the fluid passage 68 and the line 104 which is connected to the engine oil conduit 88. When the valve 96 is moved downwards to connect line 104 with high pressure and line 98 with engine oil pressure, fluid in line 104 flows into passage 68 thence to chamber 108 which is connected by a drilled passage 110 with the area at the inboard side of the piston 32. The valve 128 is forced off its seat, the flattened portion of the stem 130 is then within the bore 132. The interior of the hub is then connected via groove 120 through passage 124, groove 126, and passages 142 with orifices 116, passage 114, and passage 66 which is connected through line 98 with the engine oil pressure. Specifications 514,725, 526,100, 607,856, 636,402 and 683,906 are referred to.
Patent GB-619420-A (GB)
Title: Improvements in or relating to tents
IPC: E04H15/00
Filed: 1947-02-25
Abstract: 619,420. Tents. SHUTE, A. A. T. Feb. 25, 1947, No. 36333/46. '[Class 20(i)] A tent comprises two side walls 1, 2 which meet along an inclined ridge 4 and a wall 3 forming a ground sheet, all the walls 1, 2 and 3 being substantially triangular. The walls may be formed as separate panels joined together, with their margins overlapping, either permanently or detachably. Guys, e.g. 12, 14 pass through loops 11 along the junctions between the panels and are secured to one peg 15 at the pointed end of the tent. The other end of the ridge guy 14 is secured to a convenient object e.g. a tree. The base guys are secured to pegs 16 and may be extended to a further peg 17. An additional guy 18 may stretch from the peg 17 to the apex of the opening. The opening may be supported by a collapsable framework 9. The closure flap 8 of the opening is formed by a triangular extension of the wall 3, which may be pegged down to extend the groundsheet when the tent is opened. The guy 18 may support a canopy 19 above the opening.
Patent GB-1473904-A (GB)
Title: Railway system
IPC: E01B25/24
Filed: 1974-08-19
Abstract: 1473904 Suspension railway systems DEMAG AG 19 Aug 1974 [24 Aug 1973] 36378/74 Heading B7L A suspension railway system includes a rail of substantially I-shaped cross-section whose web 1 is disposed vertically such that the flanges 2 each provide a horizontal surface for support wheels and vertical surfaces for guide wheels of vehicles travelling along the rail, at least one flange having a cavity therein extending along the rail and opening to the exterior of the flange through a slot 8 which also extends along the rail and has a width less than that of the cavity, stationary fixtures of the system, e.g. isolators or activator plates 13, being held on the rail by fittings engaging in the cavity. The flanges may be identical and arranged in mirror-image relationship, the rail either being made in one-piece with hollow flanges formed as shown in Fig. 1, or being made from separate web and flange parts welded or otherwise secured together, in which case each flange is E-shaped in cross-section as shown in Fig. 2 so as to have two cavities each opening through a narrowed slot defined by thickened portions at the free edges of the arms 3, 6 of the E. The fittings may be substantially U-shaped resilient members 9 engaging a rail cavity and slot as shown and held in place by their resilience or by expansion screws 11.
Patent GB-641418-A (GB)
Title: Improvements in or relating to motor vehicles employing mechanism for banking the superstructure
IPC: B60G3/26
Filed: 1946-12-10
Abstract: 641,418. Vehicle suspensions; preventing lateral cant. KOLBE, J. Dec. 10, 1946, No. 36507. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 16, 1947.] [Class 108(ii)] Vehicle suspensions of the kind described in Specification 641,411 for causing inward banking of the superstructure on turns, are now modified to maintain substantially normal castor and/or camber action, or to provide predetermined variation of the castor and/or camber action, when the superstructure moves to banked position. For this purpose, each independently sprung wheel 134, Fig. 1, is mounted on a wheel-support member 126 carried by a suspension arm 118 constrained to move relatively to the superstructure about the inclined axis 196 defined in Specification 641,411, the support member 126 being further controlled by an arm 114 pivoted to the superstructure at a point so offset from the axis 196 as to give the required castor and/or camber action. The arms 114, 118 are pivoted to the support member 126 on horizontal axes 122, 138. The connection 142 between the control arm 114 and the superstructure is a universal joint, while the connection between the suspension arm 118 and the superstructure comprises a horizontal pivot 150, an arm 146 and an inclined pintle 152. The wheel is urged downwardly, and the superstructure to unbanked position, by a spring 162 acting on an extension 172 of arm 118 in the manner described in Specification 641,416. In a modification, Fig. 10, the suspension arm 118 is connected to the chassis 240 and wheel-support member 126 in a similar manner to that shown in Fig. 1, the arrangement including a bearing 170 on the inclined axis 196, but the control arm 114 is connected to the support member by a universal joint 122 and to the superstructure by a horizontal pivot 164 and an inclined bearing 166 parallel to but offset from the axis 196. A number of other embodiments are described each relating to a construction described in one of Specifications 641,411, 641,416 and 641,417, suitably modified to give the required castor and/or carriber action.
Patent GB-1101942-A (GB)
Title: Improvements relating to data transmitter systems
Inventor: KEEFE ARTHUR THOMAS
IPC: G08C19/22
Filed: 1965-08-25
Abstract: 1,101,942. Difference circuits. EVERSHED & VIGNOLES Ltd. 16 Aug., 1966 [25 Aug., 1965], No. 36535/65. Heading G4G. [Also in Divisions G1, H3 and H4]  A differencing circuit for comparing the area of a pulse of amplitude v and reference width T with that of another of reference amplitude V and width t and for use in a system for converting a voltage v into a pulse width t (see Division G1) consists of two field effect transistors 26, 27 supplied as a pair with constant current from a biased transistor 28. The two pulse inputs vT and Vt are applied to the field effect transistor bases, and any variation in the mean level of the output at the collector of transistor 27 from a predetermined value indicates the magnitude and sense of the difference in the pulse areas. This output is used to control an encoder 17 producing the pulses of width t, which are multiplied with the reference voltage V and applied to the base of transistor 27.
Patent GB-785519-A (GB)
Title: Protective device for heavy-current rectifier installation
IPC: H02H7/12
Filed: 1955-12-21
Abstract: 785,519. Converting; inductors. MASCHINENFABRIK OERLIKON. Dec. 21, 1955 [Jan. 4, 1955; Sept. 20, 1955; Oct. 5, 1955], No. 36707/55. Class 38 (2). A polyphase rectifying circuit supplying heavy current to D.C. busbars 9, 10 through rectifier valves 7 and transformers having starconnected secondary windings 5, is protected against arc-back by high-speed D.C. circuitbreakers 8 connected in series with chokes 13 between the neutral points 6 of the star-connected secondary windings and the negative bus-bar 10. The chokes may have cores 11 with air-gaps 12 or be air cored to have a linear characteristic, and are dimensioned so that the current rise per second does not reach two thousand times the normal neutral current. The chokes may act as interphase transformers or be replaced wholly or partly by the normal smoothing chokes, Fig. 4 (not shown), or by magnetic blow-out coils or circuit-breaker trip coils, Fig. 5 (not shown), or they may be provided in addition to normal smoothing chokes, Fig. 6 (not shown). The internal short-circuit of the systems comprising three rectifiers fed by each group of star-connected secondary windings may be cleared by separate grid control (not shown). A suitable air-cored choke comprises four coils 13a in series-connected pairs, separated by insulating distance-pieces 12a, 12b and clamped between cross-shaped bars 26.
Patent GB-1134763-A (GB)
Title: Improvements in and relating to flotation tanks
IPC: B03D1/14
Filed: 1966-08-17
Abstract: 1,134,763. Treating sewage. PURAC A.B. 17 Aug., 1966 [28 Oct., 1965], No. 36841/66. Heading C1C. [Also in Division B2] Sewage is treated with gases to float the solid matter for surface collection after if desired a chemical pretreatment. Effluent is supplied to pipe 25 for the solids to be floated by the air/purified water mixture from pipes 31 and 29. The sludge is removed by a scraper (not shown) into wells 35 while the purified liquid leaves via weirs 21. The cylindrical insert 11 in the polygonal tank 1 gives an even distribution of sludge on the surface.
Patent GB-799563-A (GB)
Title: Machine for inserting pouring spouts into containers
IPC: B21D51/42
Filed: 1956-12-03
Abstract: 799,563. Making and attaching spouts; angular bending; seaming. SEAL-SPOUT CORPORATION. Dec. 3, 1956 [Dec. 5, 1955], No. 36854/56. Classes 83 (2) and 83 (4). A machine for mounting a pouring spout in a container wall comprises means for positioning the container at a work-station and a reciprocable ram co-operating with an anvil movable into and out of the container, to push the spout into a prepared zone of the wall. A continuous strip X of spout blanks, Fig. 21, is fed by spring- pressed feed dogs 8 pivotally mounted in a block 6 which is reciprocated by a spring-loaded lever 11 driven from a camshaft 17, Fig. 14. The strip passes between plates 2 and 3 mounted on a frame A attached to a main frame B, Fig. 1, to form a guideway 1 containing a flat spring 5 for frictionally holding the blank strip. The blanks are fed one at a time between a fixed die 20 and a cam-operated reciprocating die 21 having wings 32 to shape spout-wings c and punches 30 to form prongs b on the body portion of the spout, Figs. 18 and 21. A spring plunger 35 engages an extension 33 of the plate 2 on forward movement of the die 21 to hold the strip tightly during the die action and subsequently to act as a work stripper on the return stroke. Formed spouts pass upwards to a spout-receiving channel 39 in a spout-holder 38, Fig. 16, and simultaneously with the formation of the next spout a shearing blade 37 mounted on the die block 21 shears the formed spout free of the strip. The severed spout is supported vertically in the channel 39 by a dog 49 mounted on a bar 41 by a pin 50, the dog being tripped clear of the spout-body by a fixed block 58 just before the insertion of the spout into a container wall by the cam-operated reciprocating ram P, Fig. 18. An anvil block 78, Fig. 5, coacts with the ram to support the container wall and to clinch the prongs b, Fig. 18. A cam 69 and a lever 71 located in the vertically adjustable frame " B " move the slidably mounted anvil into and retract it from the opentopped containers when they are stationary at the work-station. The feed discs j, Figs. 1, 4, are intermittently rotated in steps of 90 degrees by a Geneva gear 67-68 and receive containers in recesses j from a conveyer " F " and diverts them on an adjustable table G through the workstation and back on to the conveyer, curved guides 80 and 81 being provided to prevent the containers from flying out of the recesses. A spring-loaded lever 92, Fig. 21, holds the feeddogs 8 inoperative until containers are fed to the work-station moving an arm 88 of a bell crank lever 86 which action releases the dogs to the feed position. Specification 545,192 is referred to.
Patent GB-1180010-A (GB)
Title: Improvements relating to the Connection of Dip Tubes to Valves for Aerosol and Like Containers.
IPC: B65D83/14
Filed: 1968-08-02
Abstract: 1,180,010. Cutting tubes. COSTER TECNOLOGIE SPECIALI S.p.A. 2 Aug., 1968 [2 Aug., 1967; 31 Jan., 1968], No. 36909/68. Heading B4B. [Also in Division F2] Flexible dip tubes 11 are forced on to a nipple 143 on the valve 141 of an aerosol by means of pneumatic pressure which accelerates it in a tube 14, Fig. 3, so that it is driven on to the nipple by impact. Plastics tubing 11 drawn from a reel (2, Fig. 1, not shown), is fed into tubes 14 which are rotated in steps about spindle 128 by Geneva wheel 15. A rotating blade 23 is eccentrically mounted on rotating shaft 20 which also carries the drives 19 of the Geneva movement, and it cuts off suitable lengths of tubing in the tubes 14. The tubing 11 is carried round to compressed air orifice 131, so that the tubing is propelled up tube 14, through a guide channel 139 in cylinder 138 and on to extension 142, 143 of valve 141. The valves are held in position in plate 144 (see Fig. 7, not shown).
Patent GB-917911-A (GB)
Title: Improvements in or relating to voltage selectors
Inventor: CLARKE EDWIN LOUIS
IPC: G05B1/02
Filed: 1959-10-30
Abstract: 917,911. Magnetic amplifiers. SMITH & SONS (ENGLAND) Ltd., S. Jan. 18, 1961 [Oct. 30, 1959], No. 36972/59. Class 40 (9). [Also in Group XXXVI] Apparatus selecting the median voltage of magnitude intermediate of those of two other voltages of differing magnitudes comprises a negative feedback amplifier with five inputs and a common output, the first and fifth inputs operating on the amplifier in reverse sense to the second, third and fourth inputs; the first input circuit including a voltage selector selecting the smallest of the three voltages applied to the second, third and fourth inputs; the fifth input circuit including a voltage selector selecting the largest of such three voltages; and means for applying 100% negative feedback from the common output circuit to each input, whereby the median voltage appears at the common output. In Fig. 1 three input voltages A, B, C are applied from corresponding transmission channels to input windings 2, 3, 4 of a magnetic amplifier 7 having 100% negative feedback from its output 8 to its input windings 1 to 5, and input windings 1 and 5 are operating in opposition to windings 2 to 4 are respectively energized from the inputs over pairs of rectifiers 10, 13; 11, 14; 12, 15 in opposed polarity, so that the voltages applied to the windings 1 and 5 are the differences between the output voltage and respectively the smallest and the largest of the four voltages constituted by input voltages A, B, C and the output voltage, and it is shown that for an amplifier with a rectangular characteristic (Fig. 2, not shown) stability is achieved when the input voltage represents the median voltage of the three inputs. In a modification (Fig. 3) the common return of the input windings is connected to the slider of a potentiometer 17 energized from a direct voltage source at least equal to the largest input value, and the potentiometer is adjusted by a motor 18 energized from the magnetic amplifier output so that an increase in output voltage produces an increase in feedback voltage and at stability the slider voltage and position represents the median of the three input voltages. Further input windings and rectifier pairs enable the output to represent the median of four or more inputs (Fig. 4, not shown) and it is shown that the apparatus may then be applied to produce an output equal to the mean of all but the smallest and largest of four or more applied voltages. The inputs may be derived from potentiometers driven by respective mechanical signals, and amplifiers other than magnetic may be used.
Patent GB-522897-A (GB)
Title: Improvements in beer engine pumps
IPC: F04B53/14
Filed: 1938-12-20
Abstract: 522,897. Reciprocating pumps. BEACH, E. F. Dec. 20, 1938, No. 37008. [Class 102 (i)] In a beer engine pump the usual leather packing ring 13 of the piston 11 is replaced by a metal adapter ring 14 having a peripheral slot accommodating a metal piston ring 18. As shown, the piston ring 18 is of the double coil type, and is held in place by a flanged plug 17 which forms a seating for the non- return valve 12.
Patent GB-368761-A (GB)
Title: A grinding machine for crank shafts
IPC: B24B5/42
Filed: 1930-12-09
Abstract: 368,761. Grinding crank shafts, ERIKSEN, H. J., 37, Banegaardsgade, Aarhus, Denmark. Dec. 9, 1930, No. 37140. [Class 60.] Guides and rests.-A machine for grinding crank shafts consists of a base 1 having thereon a slide 2 upon which are carried adjustable bearing members 3, 4, respectively adapted to support two aligned journals 5, 6 of the shaft. The journal 6 has secured thereon, by screws 52, a pulley 26, which is driven by a cord 49 from a pulley 25 on a shaft 23 driven through a cord 46 and worm gearing from an electric motor 9 ; the cord 49 passes over a pulley 50 so that its tension holds the journal 6 in the bearing 4. The journal 5 is ground by means of a grinding-disc 41, operating with its flat face and carried on a spindle 13 driven by a cord 11 and supported in ball bearings 14 on a slide 15 movable vertically by a handle 16 ; the slide 15 is carried by slides 17, 19 giving transverse adjustments on the base. The journal 5 rests on an adjustable steel block 31 carried by the member 3 and is held in position by arms 28 attached to the member 3 by a stud 29. The journal 6 rests on steel blocks 34, 35 in the member 4 ; the hub 53 of the pulley 26 carries screws 54 to fit crank journals of different diameters.
Patent GB-646015-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J1/14
Filed: 1946-12-17
Abstract: 646,015. High-frequency discharge apparatus. PHILIPS LAMPS, Ltd. Dec. 17, 1946, No. 37154. Convention date, Aug. 27, 1943. [Class 39 (i)] An electrode or lead for a high-frequency discharge device comprises a ferromagnetic core (nickel, iron, nickel-iron, &c.) coated with a layer of copper, silver, or gold of a thickness of 1-30 microns. The highly conductive layer reduces losses during use at high frequencies, which by skin-effect are limited to the layer, while the lower frequencies used during manufacture can penetrate into the core underneath for satisfactory eddy-current heating. An iron anode of 125 microns thickness is coated electrolytically or otherwise with a copper layer of 10-15 microns ; or a 250 microns iron wire for a lead may be coated with a silver layer of 10-15 microns.
Patent GB-326816-A (GB)
Title: Improvements in or relating to automatic and semi-automatic cameras
IPC: G03B17/53
Filed: 1928-12-17
Abstract: 326,816. Photomaton Parent Corporation, Ltd., and Cross, F. E. Dec. 17, 1928. Drawings to Specification. Automatic apparatus.-In automatic and semiautomatic cameras for taking a series of photographs on a sensitized strip, a single stationary signalling device, which is electrically controlled by a lever operating the shutter, informs the sitter when each individual exposure has been completed. The device may be an electric bell, a dial indicator, or a coloured electric lamp. The shutter is preferably operated by an oscillating, cam-driven lever which in its uppermost position engages a contact and closes the circuit through the signalling device.
Patent GB-1242189-A (GB)
Title: Improvements in or relating to dual-walled microcapsules
IPC: B01J13/10
Filed: 1969-07-25
Abstract: 1,242,189. Colour-reactive copying sheets. LAMSON PARAGON Ltd. 25 July, 1969 [2 Aug., 1968], No. 37553/69. Heading D2B. [Also in Division B8] A colour-transfer paper is made by coating paper with an emulsion comprising dual-walled microcapsules (see Div. B8) containing 3-octyl spirodi-(naphthopyran) in "Bronoco" solvent to give a product affording a dense blue write off when pressure is applied whilst it is in contact with an acid-activated, clay-coated sheet.
Patent GB-1198492-A (GB)
Title: Apparatus for Regulating the Moisture in a Chamber, and Method of Operating Same
IPC: F24F3/14
Filed: 1967-08-15
Abstract: 1,198,492. Humidity controlled chamber. SIEMENS A.G. Aug.15, 1967 [Sept.15, 1966], No.37562/67. Heading G1S. In apparatus for controlling the humidity of a chamber 1 gas is fed in through a supply inlet 11 via a moisture separator 5 consisting of Peltier blocks. A moisture detector 7 of the LiCl type is present in the chamber, and arranged so that the gas is also continually circulated through a by-pass conduit 4 where moisture is separated out at 2 by a further Peltier block system to maintain the humidity of the chamber 1 constant. The chamber 1 is used for zoological experiments.