baber/WOPTO huggingface dataset:
Patent GB-1392214-A (GB)
Title: Safety device for a read-write apparatus of magnetic discs
Inventor: PRIEUR LUCIEN R
IPC: G11B17/04
Filed: 1972-07-26
Abstract: 1392214 Recording and playback COMPAGNIE HONEYWELL BULL 26 July 1972 [4 Aug 1971] 35037/72 Heading G5R A safety system in a magnetic-recorder prevents a disc cartridge 6 from being removed as long as a pair of read/write heads 3, 4 on a movable carriage 5 are in operative positions. In the arrangement shown, the cartridge 6 is clamped by a roller 10 on a pivotally mounted bracket 7, and the bracket is latched in the clamping position by means of a spring loaded lug 13. If however, the carriage 5 is moved to the right, a roller 23 co-operates with a lever 20 and chain 18 to pull the lug 13 out of engagement with the bracket 7, and it then becomes possible to rotate the bracket in the direction F 3  and so free the cartridge. In the embodiment of Fig. 5, the rotation of a bracket 40 in the direction F 3  causes a cable 18 to pull a fork ended lever 57 so that a further lever 53 with a shoulder 59 is lifted away from a lug 55 on a segment 51. The segment 51, a shaft 43, and two arms 42 are all then rotated by a spring 52 to cause two disc cleaning brushes 41 to be withdrawn from a cartridge 6. An arrangement such as in Fig. 1 or Figs. 2, 3 (not shown), is also operated in conjunction with a second bracket (not illustrated), diammetrically opposite to the bracket 40 of Fig. 5, whereby to likewise withdraw a heads carriage before the cartridge 6 is set free.
Patent GB-1515219-A (GB)
Title: Portable extrusion presses
IPC: B05C17/01
Filed: 1976-08-23
Abstract: 1515219 Piston dispensers ALFRED FISCHBACH KG KUNSTSTOFFSPRITZGUSSWERK 23 Aug 1976 [7 April 1976] 35047/76 Heading F1R A portable device for dispensing plastics masses comprises a hollow cylindrical container 1 having a nozzle 2 fitted at one end and a cap 4 at the other, the cap 4 and container 1 being of synthetic plastics material of different hardness, such that the member, e.g. the cap 4, of the greater hardness is provided with projections 8 to penetrate the other member, e.g. the container 1, to oppose removal of the cap 4 from the container 1. The cap 4 includes a tapped aperture at 4a to receive a rotatable screw-threaded spindle 5 for imparting movement to a piston 3 slidable within the container. As shown, the cap 4 is made of the harder material and is provided with an annular slot 4b whose inner surfaces carry the projections 8, these penetrating the softer material of the wall of the container 1. The projections 8 are preferably of tooth shaped cross-section and are formed as circumferential ribs or as a screw thread. In the latter instance, the cap 4 can then be unscrewed to allow recharging of the device.
Patent GB-761214-A (GB)
Title: Improvements in and relating to the manufacture of rock drill steels and the like
IPC: B21K5/06
Filed: 1954-12-03
Abstract: 761,214. Making compound drill steels; cores; rolling tubes. HELLEFORS BRUKS AKTIEBOLAG. Dec. 3, 1954 [Dec. 6, 1953], No. 35150/54. Classes 83 (2) and 83 (4). In making a lined rock drill steel a lining of stainless metal is introduced into an axial bore 2 in a billet 1, a core 4 is upset therein to press the lining into contact with the bore and the billet is rolled to bar form, the core being subsequently drawn out. The lining may be introduced as a formed tube 3, Fig. 2, or as a sheet bent or rolled into tubular form with overlapping ends, Fig. 3, and preferably of more than two turns. In the example the billet contains 1 per cent carbon, 1.25 per cent chromium, and 0.25 per cent molybdenum and the core is of manganese steel. The rolled or bent sheet may be 0.00394-0.11811 inches thick, preferably 0.03150 inches and of a low carbon steel containing 5 to 25 per cent, preferably 13 per cent chromium. The core which extends beyond the ends of the lining is compressed between the rams 5, 5 of a hydraulic &c. press.
Patent GB-803514-A (GB)
Title: Improvements in or relating to telephone answering machines
Inventor: O'DWYER MARTIN THOMAS
IPC: H04M1/654
Filed: 1954-12-06
Abstract: 803,514. Substation equipment. PYE, Ltd. Dec. 6, 1955 [Dec. 6, 1954], No. 35250/54. Class 40 (4). In a telephone answering machine which besides sending a message to a caller invites him to record a message, a monitoring circuit which is arranged to be connected to the line circuit at least when the caller is recording, comprises two parallel channels one detecting the presence of dialling tone and responding to operate a relay and the other detecting speech and being arranged to operate the relay in the absence of speech, the relay being arranged to switch off the machine. The invitation to speak is extended to terminal A and passes through filter F1 and amplifier stages V1a, V1b, V2 to develop a cut-off bias on valve V2 due to condenser C1 which persists for a short period to prevent the switching off of the machine by relay R as a result of hesitancy on the part of the caller. Relay R is subsequently held by the caller's speech until its cessation renders valve V4 conductive. When the machine is connected to an automatic exchange system valve V7 is rendered conductive to operate relay R at the conclusion of a call by the presence of dialling tone on the line. Dialling tone, which is limited by rectifiers W1, W2, is selected by a filter F2, amplified in valve V5 and rectified by a diode V6 to overcome standing bias on the valve V7. The standing bias is developed across a potentiometer R2, R3, and protection against false release by harmonics of dialling tone in speech is provided through rectifier W3. A cut-off bias is applied over terminal B2 to prevent false release due to spurious signals which may occur during machine switching operations. Specification 803,513 is referred to.
Patent GB-828841-A (GB)
Title: Improvements in or relating to navigational computers
IPC: G06G1/14
Filed: 1956-11-19
Abstract: 828,841. Calculating-apparatus. HEITOR, A. L. C. Nov. 19, 1956 [Nov. 19, 1955], No. 35376/56. Class 106 (1). A navigational computer for aircraft comprises a disc 5 bearing a compass scale rotatable within a rectangular frame 2 bearing around the disc a fixed compass scale 4 and carrying a slide 1 bearing graduated radial and arcuate lines. The central portion of the rotatable disc is transparent and marked with a diametrical scale of wind speed. In use, supposing, e.g., the desired course and ground speed and wind velocity to be known, the course angle on the rotatable compass scale is set opposite the wind direction on the stationary scale. The slide is then set so that the ground speed on its central scale coincides with the centre of the disc as indicated by the diametrical scale. The airspeed and angle of drift may then be read from the graduations on the slide at the point of the diametrical scale representing the wind speed. In this case, the portion of that scale extending to " N " on the compass scale, which portion is black, is used, but if the air-speed is the known factor, that portion extending to " S," which is coloured red, is used instead. The disc has a knurled portion extending beyond the frame to facilitate setting. An ancillary slide rule comprises arcuate logarithmic scales 8 of time marked on the frame and scales of distance and fuel consumption marked on an arcuate slide 9, which, by virtue of the engagement of a pin in it with a logarithmic cam slot 6 in the main slide, is set by movement of the main slide in accordance with speed.
Patent GB-1310977-A (GB)
Title: Loadbearing spring leg
IPC: F16F13/00
Filed: 1970-07-22
Abstract: 1310977 Shock absorbers C U PEDDING- HAUS 22 July 1970 [25 July 1969] 35414/70 Heading F2S A piston-and-cylinder shock absorber for a vehicle has three piston rods 11, 11<SP>1</SP>, 11<SP>11</SP> extending from the same end of the cylinder. A spring 9 acts in parallel with the shock absorber. The three piston rods are attached to a plate 13 connected to the piston 3, and extend through individual seals 20 in a rotatable plate 12. An anti-dust bellows 21 surrounds the piston rods.
Patent GB-155548-A (GB)
Title: Improvements relating to garbage receptacles
IPC: B65F1/16
Filed: 1920-12-17
Abstract: 155,548. Mazerolle, L. Dec. 19, 1919, [Convention date]. Refuse-bins.-The lid 2 is pivoted at 4 by means of depending sides 3, to which are fixed carrying-handles 5. The sides are joined by a crosspiece 8, and on that side of the bin the top is cut away as shown by dotted lines. Handles 6, 7 are provided for use in emptying the bin.
Patent GB-375215-A (GB)
Title: Improvements in or relating to steam turbines
IPC: F01D25/22
Filed: 1931-12-23
Abstract: 375,215. Steam turbines. AKT.- GES. DER MASCHINENFABRIKEN ESCHER, WYSS, ET CIE, 19, Hardturmstrasse, Z³rich, Switzerland. Dec. 23, 1931, No. 35565. Convention date, Dec. 23, 1930. [Class 110 (iii).] In a steam &c. turbine 1 in which the same medium is used for lubricating a bearing 6 and for driving the turbine, the bearing is arranged in the exhaust branch 5 which connects with the condenser 2 so that lubricant forced into the bearing drains into the exhaust branch. Stuffing boxes at this point are thus rendered unnecessary. As lubricant, steam or condensate supplied by the pump 12 through a pipe 8 may be used. The regulating valve 9 may be interconnected with the starting-up gear. The arrangement can be applied to a back-pressure turbine.
Patent GB-390576-A (GB)
Title: Improvements relating to grates for fire boxes
IPC: F23H9/00
Filed: 1931-12-23
Abstract: 390,576. Firebars and grates. EGUI, M., 161, Rue Paris, Barcelona, Spain. Dec. - 23, 1931, No. 35598. [Class 51 (i).] In a furnace grate of the kind comprising rocking bars or fixed and rocking bars 2, Figs. 2 and 3, arranged alternately and transversely in a frame 1 and carrying removable fire bars 3 with pointed extremities and spaced apart to provide air passages 10 into which extend the firebars of adjacent fixed or rocking bars, the sides of the fire bars are provided with lugs 8 which abut against corresponding lugs of two firebars of an adjacent fixed or rocking bar. The firebars are also provided with interlocking projections and recesses 5, 6.
Patent GB-355145-A (GB)
Title: Improvements in and relating to arc extinguishing fluids
IPC: H01H33/22
Filed: 1930-11-26
Abstract: Dry mineral oil of high dielectric strength is mixed with a detonation-suppressor such as aniline, benzene, toluene, or xylene for use as an arc-extinguisher in electric circuit-breakers.
Patent GB-1138187-A (GB)
Title: Azo dyestuffs
Inventor: BERRIE ALISTAIR HOWARD
IPC: C10L1/00
Filed: 1965-08-20
Abstract: 1,138,187. Nonyl naphthol. IMPERIAL CHEMICAL INDUSTRIES Ltd. 21 July, 1966 [20 Aug., 1965], No. 35781/65. Heading C2C. [Also in Division C4] Nonyl naphthol is obtained from the condensation of #-naphthol and propylene trimer in the presence of a catalyst, e.g. activated clay.
Patent GB-1306275-A (GB)
IPC: F42B39/00
Filed: 1970-07-23
Abstract: 1306275 Containers for cartridges RHEINMETALL GmbH 23 July 1970 [7 Aug 1969] 35834/70 Heading F3A A tubular container for cartridges comprises a one-piece tube 1 of synthetic plastics closed at one end 1b, and provided with at least three longitudinal corrugations or ribs 1a by which the neck 2a of the cartridge case and the adjacent part of the projectile 2b are supported. At least three longitudinal corrugations or ribs 1d support the cartridge case 2. Finger recesses 1c are provided at the open end of the container to facilitate withdrawal of the cartridge. A plug (3, Fig. 4, not shown) may close the open end of the container.
Patent GB-840020-A (GB)
Title: Pilot lamp relay for blinker installations
IPC: G08B5/36
Filed: 1958-11-07
Abstract: 840,020. Thermal switches. SWF-SPEZIALFABRIK FUR AUTOZUBEHOR G. RAU G.m.b.H. Nov. 7, 1958 [Dec. 19, 1957], No. 35864/58. Class 38 (5). [Also in Group XXXVIII] A control relay for the pilot lamp in a blinker system for a vehicle and two trailers (see Group XXXVIII), comprises a current winding and two operating armatures. One of the armatures is subject to the action of the force due to the magnetizing current and a spring counteracting this force and the other is subject to the action of the magnetizing force, or a spring, and to the action of a heating wire which is extended by passage of current and which when cold holds the second armature. in the normal position. When the first armature operates, it completes the current circuit of the heating wire of the second armature and when this heating wire is fully extended the second armature operates to close its contacts. In the embodiment described, the armature 35 of the relay 2 is adjusted in such a manner as to discontinue to be attracted when one of the blinker lamps provided on one side of the lorry or its trailers fails. When however all four lamps on one side, for example lamps 13, 14, 16, 18, are lit the armature 35 is attracted closing the circuit for the thermal switch 39. On heating, the wire 40 of this switch expands, allowing the contacts to the pilot lamp 44 to be closed, so giving an indication that all lamps are lit.
Patent GB-1414368-A (GB)
Title: Internal combustion engine exhaust gas purifier incorporating  a blow-off valve assembly
IPC: F01N3/22
Filed: 1973-07-27
Abstract: 1414368 Controlling air supply to exhaust gas purifier; valves AUDI NSU AUTO UNION AG 27 July 1973 [7 Aug 1972] 35896/73 Heading B1W An exhaust gas purifier for an I.C. engine comprises a pump 1 which delivers air to an after burner 3 via a pipe 2 which includes a blow-off valve assembly 4 to release excess air to the atmosphere via a pipe 7, a valve member 6 being biassed to a closed position to control air flow from pipe 2 to pipe 7, and a diaphragm 10 mechanically connected to the valve member 4 and having one side exposed to the back pressure in pipe 7 and the other side exposed directly to atmospheric pressure so that the position of the valve member is effected by the pressure in the pipe 7. A muffler 8 may be provided to increase back pressure in pipe 7. The valve spring 5, diaphragm 10 and muffler 8 if present may be chosen to ensure that the valve opens steadily over part or all of its travel or so that it snaps open from its fully closed to its fully open position.
Patent GB-1158829-A (GB)
Title: Shift Mechanism for Overdrive Arrangements
Inventor: ALBRECHT HEINZ
IPC: F16H63/44
Filed: 1967-08-04
Abstract: 1,158,829. Change-speed control. IFA GETRIEBEWERKE BRANDENBURG VEB. 4 Aug., 1967, No. 35912/67. Heading F2D. A change-speed gear is controlled by a manual gear lever movable in a gate, and is preceded by an auxiliary two-speed gear controlled by switches which are actuated on movement of the gear lever into a position establishing a ratio in the main gear. As shown a countershaft gear providing four forward and one reverse ratio is controlled by a gear lever, movement of which into a gear establishing position closes a respective switch 14 to complete a circuit to a solenoid controlled valve 6 or 7 which is thus actuated to supply pneumatic pressure to a chamber 11 or 16 of a servo 10 to engage the appropriate ratio of the auxiliary gear. In its end positions the servo 10 opens a switch 15 or 17 to open the circuit to the appropriate valve 6 or 7 so that the servo is relieved of pressure. In a modification a third solenoid operated valve is actuated by a cam controlled switch when the gear lever is in its neutral position and serves to shift the servo to a neutral position so that the main change-speed gear is uncoupled from the engine during shift to reduce the load on its synchronizing devices. In this modification the servo has two pistons slidable on a rod and abuttable against collars thereon, the third valve controlling supply of pressure to a space between the two pistons.
Patent GB-1224884-A (GB)
Title: Improvements in carbon filaments
Inventor: HUXLEY RONALD VICTOR
IPC: D01F9/26
Filed: 1967-08-04
Abstract: 1,224,884. Carbon fibres. COURTAULDS Ltd. 2 Aug., 1968 [4 Aug., 1967], No. 35938/67. Heading C1A. Carbon filaments are produced by heating organic filamentary material under tension at a temperature between 150‹ and 200‹ C. in an atmosphere of O 3  and O 2  and then heating at a temperature # 1000‹ C. in an inert atmosphere. The gas mixture used in the first stage can be ozonized oxygen, if desired diluted with, e.g. N 2 . In the second stage, the filaments are heated without tension being applied. If graphite carbon is required a temperature of at least 2000‹ C. in an inert atmosphere is employed. Organic filamentary material can be cellulosic, polyamide, polyester filaments, but preferably polyacrylonitrile. The process may be carried out by a batch or continuous method. Specification 1,110,791 is referred to.
Patent GB-1188783-A (GB)
Title: Carburettor.
Inventor: BOYD WILLIAM DAVID
IPC: F02M5/08
Filed: 1968-07-27
Abstract: 1,188,783. Spray carburetters. FORD MOTOR CO. Ltd. July 27, 1968, No.35970/68. Heading FiB. The float chamber 15 of a carburetter 10 has a vent 23 extending into the induction passage 11 and a vent 25 connected to the inside 27 of an air cleaner 13.
Patent GB-1243440-A (GB)
Title: Brush with rotatable base
IPC: A46B7/00
Filed: 1969-07-17
Abstract: 1,243,440. Brushes. ALLSTAR VERBRAUCHGUETER G.m.b.H. & CO. K.G. 17 July, 1969 [10 May, 1968], No. 35975/69. Heading B4K. [Also in Division A4] The base of a brush comprises a padded brush element B having bristles inclined in the same direction and being clamped to a base-plate 1 by a frame 13, said base being normally locked against the brush body 10 by a helical spring but being axially movable to a position in which the base is pivotable about the axis. The base-plate 1 has a central two-part bore 2 the upper part 4 of which has a square cross-sectional bore 5 in which a bolt 6 is held. On depressing the knob 7 of the bolt against the spring 9, the base of the brush is detached from the brush body 10 and may be rotated through 180 degrees so that the bristles are inclined in the opposite direction relative to the handle 16. On release of the knob 7, the spring returns to its original position and pulls the base against the free edge of the side walls 101.
Patent GB-446926-A (GB)
Title: Improvements in and relating to devices for delivering measured quantities of liquids
IPC: B67D3/00
Filed: 1934-12-15
Abstract: 446,926. Delivering measured quantities of liquids. BOWKER, R. P., 75, Charles Street, Sheffield. Dec. 15, 1934, No. 36002. [Class 106 (v)] In a measuring tap having an inlet tube 1 to which it is intended to fit a cork sleeve or closure 6 adapted to be inserted into the neck of a bottle, the lower end 2 of the tube is tapered outwardly towards its base and is screwthreaded. In practice, the cork is bored out to slide on to the outside of the unscrewed portion and is fastened by being screwed on to the tapered portion.
Patent GB-412199-A (GB)
Title: Improvements in or relating to pots, cartons and other receptacles constructed of paper or the like
IPC: B65D3/30
Filed: 1932-12-20
Abstract: 412,199. Cartons &c. PROCTER, H. A., Allestree, The Drive, Sidcup, Kent, and BATCHELOR, G. H. R., 57, Gracechurch Street, London. Dec. 20, 1932, No. 36076. [Classes 66 and 125 (iii).] The mouth of a paper or like carton or similar receptacle for milk &c., of circular cross-sectional form is provided with a metal or other mount ring c of #-section which is secured in position over the end of the carton body by the formation in either or both of the outer or inner skirt-portions of indentations e of helical contour adapted for engagement by correspondingly threaded portions f of cap or plug closures g. The end of the carton body to which the mount is applied may be doubled over upon itself either inwardly or outwardly.
Patent GB-1357557-A (GB)
Title: Logic circuit
IPC: H03K19/096
Filed: 1971-08-02
Abstract: 1357557 Semi-conductor logic circuits LICENTIA PATENT - VERWALTUNGS GmbH 2 Aug 1971 [4 Aug 1970] 36261/71 Heading H3T A logic circuit has a plurality of cascaded stages each containing a capacitance C 1 , C 2 , C 3  a diode D 1 , D 2 , D 3  and a controlled current device such as a F.E.T. Q 1 , Q 2 , Q 3  in series, all stages receiving the same single phase clock pulse # which refreshes the stored charges. All the capacitances C 1 , C 2 , C 3  are charged negatively by #, and if A is negative (Fig. 2, not shown) then at the end of #, C 1  is discharged (B), and C 2  also starts to discharge but at a lower rate because Q 2  is becoming less conductive and eventually turns off leaving C 2  with most of its charge (C). As a result, Q 3  is held on and C 3  is discharged. Each stage may have a series or parallel arrangement of F.E.T.'s (Figs. 5, 4, not shown) to perform NAND and NOR functions, or combinations thereof. The diode of each stage is the function between the substrate and either source or drain of the corresponding F.E.T. (Fig. 3b, not shown).
Patent GB-809909-A (GB)
Title: Preparation of isopropyl benzenes
IPC: C07C2/66
Filed: 1956-11-28
Abstract: Di- and tri-isopropylbenzenes containing less than 5 mol. per cent of compounds having ortho-orientated isopropyl groups are prepared by alkylating benzene and/or cumene with propylene in the presence of an aluminium silicate catalyst at 200-250 DEG  C. and an LHSV between 0.5 and 5.  The method is particularly suitable for preparing meta-diisopropylbenzene and 1,3,5-triisopropylbenzene.  Undesired products are recycled.  In an example a mixture of cumene, propylene and triisopropylbenzene in the molar ratio of 3:1:0.3 was led at an LHSV of 5 from the bottom to the top of a reactor containing 90 ml of an aluminium silicate catalyst at 60 atmospheres and 250 DEG  C.  The product was fractionated and cumene propylene and triisopropylbenzene were returned to the reaction zone with fresh cumene and propylene. Diisopropylbenzene amounted to 30 mol. per cent of the total product and constituted 53 per cent para-, 45 per cent meta- and 2 per cent orthodiisopropylbenzene.  Specifications 749,187 and 809,908 are referred to.
Patent GB-337643-A (GB)
Title: Method of and mechanism for collecting dust
IPC: A47L9/14
Filed: 1929-11-29
Abstract: 337,643. Gasner, P., and Gasner, SDec. 1, 1928, [Convention date]. Filters.- A dustcollecting arrangement for attaching to vacuum cleaners comprises a hose 1, with an outer fabric covering 2 and an internal lining 3, attached to the outlet of the cleaner. The lining 3 is air-tight as far as a point A and then is made relatively porous. A collecting receptacle B made of porous or impermeable material, is attached to a coupling 7. The current of dust laden air changes direction on its way to the dust collecting bag and some of the air escapes through the porous lining and the dust is deposited in the bag. The coupling 7 may also allow an escape of air.
Patent GB-1105884-A (GB)
Title: Microscope optical objective
IPC: G02B21/02
Filed: 1966-08-16
Abstract: 1,105,884. Microscope objectives. BAUSCH & LOMB Inc. Aug.16, 1966 [Aug. 25, 1965], No. 36705/66. Heading G2J. A microscope semi-objective 10 for use with a rear corrector lens 20 to provide a combined positive power of 10 X and a focal length F, comprises three doublets I, II, III, as shown having respective focal lengths F 1 , F II , F III  wherein:- Optical data are provided for the example shown.
Patent GB-1125060-A (GB)
Title: Display means adapted to support a plurality of articles
IPC: A47G7/04
Filed: 1967-08-10
Abstract: 1,125,060. Displaying articles. W. STAHL. 10 Aug., 1967 [11 Aug., 1966], No. 36721/67. Heading A4T. An article display device comprises a hollow perforated body 1 and brackets 3 supporting articles engaging the perforations. The body may be floor, wall or ceiling mounted and of transparent or translucent plastics or wire mesh and with an internal light. The brackets comprise an article supporting loop with a multiplebend hook.