baber/WOPTO huggingface dataset:
Patent GB-1256713-A (GB)
IPC: F16D55/224
Filed: 1968-04-11
Abstract: 1,256,713. Disc brakes. GIRLING Ltd. 10 April, 1969 [11 April, 1968; 30 Oct., 1968], Nos. 17716/68 and 51449/68. Heading F2E. A railway vehicle disc brake comprises a yoke 114, 134, a pair of opposed caliper levers 128 pivotally mounted on the yoke, a pair of brake shoes 126 one pivotally mounted at the inner end of each lever, an actuating motor 136 for separating the outer ends of the levers to move the shoes towards each other, whereby in use the shoes can be applied to opposite sides of a brake rotor comprising a disc or discs D mounted for rotation with a wheel W of the vehicle, and a suspension link H for each shoe, each link being pivotally connected at one end to its shoe 126 and at its other end to a rigid support structure and serving in use to resist pivotal movement of the shoe about its pivotal connection with the caliper lever, relative to the brake rotor. The rigid support structure 118 is fast with the yoke and resilient suspension means are provided for mounting the yoke on a railway vehicle frame 104 in a manner accommodating some misalignment between the   vehicle frame and the brake rotor without any substantial corresponding reaction being transmitted back to the vehicle frame during braking. As shown, brackets 100, 102 secured to the frame 104 carry a mounting block 108 disposed between plates 106 and apertured for the reception of spherical rubber bushes 110, Fig. 3, through which extend bolts 112. Arms 118 to which the links H are attached are secured to the block. The actuator 136 incorporates a slack adjuster 138. In a modification, Fig. 4 (not shown), the yoke is supported for angular movement about an axis extending generally radially of the rotor by means of a pivot pin coupling the yoke to a mounting structure rigid with the frame 104, and a resilient force tending to maintain the yoke in a central angular position is provided by a pair of spring assemblies disposed on opposite sides of the pin and each acting between the yoke and mounting structure.
Patent GB-1258690-A (GB)
IPC: B02C18/14
Filed: 1970-07-24
Abstract: 1,258,690. Comminuting apparatus. KRAUSS-MAFFEI A.G. 24 July, 1970 [24 July, 1969], No. 36084/70. Heading B2A. A comminuting apparatus comprises a housing 1..4, a stator comprising groups of blades 11 on blade carriers 8-10, arranged around the periphery and spaced by sieve portions 12.. 14, an inlet 5, which is offset in the direction of rotation and a four-bladed rotor 6. Material fed in at 5 may pass through the sieve portion 12 after cutting at the first cutter blades 11 of the stator and so on around the rotor until all the material is cut. It is thus prevented from clogging the cutting space, or being over comminuted and forming unwanted fines.
Patent GB-1259462-A (GB)
IPC: F41A25/10
Filed: 1968-08-19
Abstract: 1,259,462. Aircraft weapon mountings. BRITISH AIRCRAFT CORP. Ltd. 6 Oct., 1969 [19 Aug., 1968], No. 39613/68. Heading F3C. A gun mounting system for aircraft comprises a hollow body formed by two relatively axially movable parts 6a, 6b, one part 6b being adapted to be rigidly attached to the inner component 9a of a part-spherical joint, the outer component 9b being attachable to the aircraft, and the other part 6a being attached to the gun cradle. A flexible means 8 is operatively mounted between the two parts 6a, 6b, the arrangement being such that the flexible means 8 absorbs at least part of both the recoil and run-out loads of the cradle. In the construction shown the flexible means 8 comprises two stacks 19, 20 of spaced annular discs 21, the discs being separated from each other in each stack alternately by different diameter spacer rings 22, 23 and the stacks being separated by a flange 18 of the hollow body part 6a. Relative rotation of the two parts is prevented by a threaded member 24 and the flexible means may be provided with packing pieces 26 to prevent play in the assembly. The annular discs of each stack may have differing characteristics or a different number of discs may be placed in the two stacks. The discs may be in the form of truncated cones.
Patent GB-1264953-A (GB)
IPC: C08J9/10
Filed: 1968-05-31
Abstract: 1,264,953. Sheets of expanded thermoplastic polymer. FISONS INDUSTRIAL CHEMICALS Ltd. 25 July, 1969 [31 May, 1968], No. 26080/68. Headings C3C, C3P and C3R. A sheet of expanded thermoplastic polymer is made by perforating a sheet of the unexpanded polymer containing a blowing agent and subjecting the perforated sheet to a heat treatment to effect expansion. The polymer may be a polyamide, polyacrylate, polystyrene, polyvinyl chloride, or a copolymer of vinyl chloride with a vinyl ester, vinylidene chloride, acrylic acid or styrene. The blowing agent may be azodicarbonamide, or p,p<SP>1</SP>-oxybis-(benzene sulphonyl hydrazide or semicarbazide). The unexpanded sheet may be expanded by passage through a hot air oven. The examples use a mixture of polyvinyl chloride, dioctyl phthalate, diboric lead phthalate and azodicarbonamide for forming expanded sheets.
Patent GB-1265938-A (GB)
IPC: E21B43/01
Filed: 1970-12-29
Abstract: 1,265,938. Pipe couplings. NORTH AMERICAN ROCKWELL CORP. 29 Dec., 1970, No. 61645/70. Heading F2G. An axially movable piston 50 within a connector 10 moves in one direction to lock a plurality of latches 44, pivoted about their lobes 45 in a groove 21 of a cylindrical part 20 of the connector, in a groove 64 of a mating pipe end 60, and in the other direction to move a ring 40 away from the latches to tension springs 42, attached to the ring and the latches, to rock the latches radially outwardly. The piston 50 is hydraulically operated. The cylinder 20 is axially movable inside a casing 22, fixed, e.g. to the sea bed or an oil well frame, so that the cylinder, under hydraulic actuation, is displaced towards the mating pipe end 60 prior to latching. The pipe end 60 and connector 10 are aligned by a bell-mouth 16. The connector and mating pipe end 60 may have provision for a plurality of pipes 18, and (18<SP>1</SP>) respectively.
Patent GB-1265966-A (GB)
IPC: A24D3/04
Filed: 1968-11-27
Abstract: 1,265,966. Cigarettes; tobacco-smoke filters. BRITISH-AMERICAN TOBACCO CO., Ltd. 12 Sept., 1969 [27 Nov., 1968], No. 56325/68. Heading A2C. A ball valve member 13 lightly loaded by a spring 9 causes a puff of smoke drawn through a cigarette etc. to be divided into a first portion that passes through an annular passage or ring of passages 8 to a part 17 of a filter plug 3, and a subsequent portion which, after retraction of the ball 13, passes through an annular passage 12 to a part 18 of the filter plug which is less dense or has lower smoke retaining properties than the part 17. The passages 8, 12 are formed in a metal or plastics member 2 secured by adhesive bands 7, 15 between the tobacco section 1 and the filter plug, and the latter comprises conventional fibrous or sheet tobacco smoke filtering material, the inner part 18 being separated from the outer part 17 by a paper sleeve 17'. In a modification, the part 18 is of shorter length and bounded also at the outer end of the filter plug by the material of the part 17.
Patent GB-1289933-A (GB)
IPC: F16B7/00
Filed: 1971-01-21
Abstract: 1289933 Welding by fusion WEATHERHEAD CO 21 Jan 1971 2904/71 Heading B3R [Also in Division F2] In a welded end-to-end joint between tubular workpieces, such as tubes (Figs. 2, 3) or a tube and a fitting such as an elbow (Fig. 4), the mating ends of the workpieces are respectively provided with telescoping male spigoted and female recessed end preparations and at least one of said end preparations is formed by a sleeve tightly engaging the outer surface of a tube portion. The tubes may be of titanium or titanium alloy. As shown, tube end portions 10, 15 have tightly fitted thereon sleeves 14, 15 having end faces (34), (38) respectively extending beyond and set back from tube end faces 32, 36 to form said recess and spigot. The spigot is slightly shorter than the recess so as to provide an inert gas purge gap between the end faces 32, 36 on workpiece assembly. Each sleeve is slipped over its respective tube end portion and the latter is internally roll swaged so as to radially expand it into tight engagement with the sleeve. The end of the sleeve 14 is initially flared (Fig. 1) so that when its respective tube end portion expands the sleeve said flared portion becomes cylindrical. After assembling together the workpieces, a single weld bead 42 is formed by external arc welding, said bead extending to the inner tube surface and having an inner width at least equal to that of the gap 40 and an outer width at least twice the recess width. To minimize stress concentration, the ends of the sleeves remote from the weld bead are radiused at 54. To prevent galling or fretting, a lubricant film (49) is provided between the sleeves and tube portions at portions of the sleeves remote from the weld bead. The film (49) is preferably a dry lubricant such as MoS 2 , Sb 2 O 3 , graphite or mixtures thereof in a resin binder. Each sleeve may be vapour blasted with aluminium oxide before applying such lubricant coating thereto. The coating is preferably made on both the internal and external surfaces of each sleeve, to assist visual sleeve orientation, and may also be applied to the tube end portions, provided that weld contamination is avoided. In Fig. 4, the recess may be provided in the tube/sleeve assembly or, as shown, in a fitting 44.
Patent GB-1290221-A (GB)
IPC: B23B29/034
Filed: 1970-02-25
Abstract: 1290221 Boring bars MUREX Ltd 19 April 1971 [25 Feb 1970] 9185/70 Heading B3C A cartridge for use in a boring bar comprises a tapered member 2 adapted to be fixed to the boring bar by screws 8, a second tapered member 4 releasably secured to member 2 by a bolt 36, and adapted to be adjusted relative to member 2 by an eccentric 16 actuated by a key 50, and a cutter 32 mounted on member 4. Movement of member 4 along with cutter 32, along member 2, varies the cutting diameter of the boring bar, the degree of adjustment being indicated by calibrations 60, 62. Four such cartridges are used in a boring bar (3), Fig. 3 (not shown).
Patent GB-1290523-A (GB)
IPC: A61G13/12
Filed: 1969-04-09
Abstract: 1290523 Head rests A P GARLAND 11 June 1970 [9 April 1969] 18180/69 Heading A5R A head rest for use during surgical operations, comprises a base 1 formed with a frame or cradle 4 adapted to receive a person's head and upstanding supporting means 34, 35 adapted to bear against the person's jaw. A plate 6 has a curved upper edge 7 adapted to receive the neck. The height of jaw supports 34, 35 above the base is variable by means of racks 17, 18 which engage with pinions 20, 21 respectively, the latter being mounted on a common shaft 22 which is rotatable by means of knob 31 via gearing 30, 32, 24, 25. The distance between the jaw supports is variable by rotating a shaft 15 which has at one end a right handed screw thread and at the other a left handed screw thread which are screwed into respective correspondingly threaded lugs 14 formed on blocks 12, 13 which hold the jaw supports.
Patent GB-1290613-A (GB)
IPC: A24B3/12
Filed: 1970-01-26
Abstract: 1290613 Conditioning tobacco HAUNIWERKE KORBER & CO KG 26 Jan 1970 [5 March 1969 25 April 1969] 3679/70 Heading A2C Tobacco ribs are prepared for rolling and cutting by having their moisture content increased in an apparatus comprising, in one embodiment, a perforated conveyor belt 17 on which the ribs are sprayed with steam and/or water from nozzles 18, 19, and a heated conditioning chamber 2 comprising a rotary conveyor drum 5 which promotes penetration of the moistening fluid into the rib material. The drum 5, supported on rollers 3, 4, 6 and rotated by an electric motor 7, has a helical formation 12 causing upward transference of the ribs from the conveyor 17 to a conveyor 24. The drum has a moisture drain 9 and a fumes outlet 26 and is surrounded by an insulated jacket 10 to which steam for heating is supplied by a pipe 8. In a modification, the rotary drum is arranged so that its delivery end is at a lower level than its inlet, and the helical formation is dispensed with. A further modification has the conditioning chamber 2 in the form of a non-rotary, partially steam jacketed drum housing a rotary screw conveyor. Steam may be admitted also to the interior of the drum. A pair of nozzles in advance of the conveyor treats the tobacco ribs with steam or gas and/or a heated saucing liquid composed of water with an additive such as glycerine, an aroma or taste-modifying substance or a moisture retaining agent. A tank is also provided so that ribs with a very low initial moisture content may be treated alternatively by immersion in a bath of heated saucing liquid.
Patent GB-1295574-A (GB)
IPC: H01J29/87
Filed: 1971-05-21
Abstract: 1295574 Cathode-ray tubes HITACHI Ltd 21 May 1971 [22 May 1970] 16441/71 Heading H1D To inhibit a C.R.T. against implosion adhesive tape 2 and first and second tension bands 3, 5 are wrapped around the tube with mounting lugs 4 forced against the first band by the second band. A polyester tape 2 and a steel band 3 are wrapped around the rectangular faceplate of the tube which is then mounted by a suction pad on a jig 13 carrying the lugs in members 20. These are moved towards the corners of the tube to force the lugs against band 3. Band 5 is wrapped round the tube, aligned with band 3 by guides 18, tensioned and the ends welded by means 17. To prevent the lugs slipping their inner surfaces are provided with projections 42 or facing surfaces of the lugs or band 3 are roughened. The band joints are on opposite sides of the tube.
Patent GB-1302151-A (GB)
IPC: C22B15/00
Filed: 1971-04-01
Abstract: 1302151 Extraction of non-ferrous values from ores. DORR-OLIVER Inc 1 April 1971 8970/71 Heading C1A A hydrometallurgical process for the recovery of copper values from ores by leaching said ores with an aqueous sulphuric acid solution to produce a pregnant solution containing metal values and separating metal values from said pregnant solution to provide a barren leach liquor, in which at least a part of said aqueous sulphuric acid solution is produced by absorbing sulphur trioxide in said barren leach liquor, said sulphurtrioxide containing gas being produced by the catalytic oxidation of sulphur dioxide-containing gas. The sulphur trioxide is produced by mixing the sulphur dioxide-containing gas with a free oxygen containing gas, maintaining said mixed gas at a temperature of from 750 to 1100 F., by, for example, indirect heat exchange with the catalytically oxidized gases, and catalytically oxidizing at least a portion of the sulphur dioxide to sulphur trioxide. The ferric sulphate in the pregnant solution is partially reduced to ferrous sulphate by treatment with a sulphur dioxide containing gas.
Patent GB-1302954-A (GB)
IPC: B28B19/00
Filed: 1970-06-05
Abstract: 1302954 Casting conduit linings CUFFLIN HOLDINGS Ltd 2 June 1971 [5 June 1970] 27363/70 Heading E1S An underground conduit is lined with castable material, e.g. concrete, using an elongate collapsible former 3 positionable to define a tubular space for casting the lining between the former and the conduit wall, by first installing spacing elements 6 to keep the former spaced from the conduit wall, then positioning the former in an initially collapsed state and expanding it and inflating sealing rings 9, 11 attached to its ends 10, 12 to seal off a first tubular casting space, filling the space with the lining material and allowing to set, deflating the sealing rings and collapsing the former, and then moving the former along the conduit to a position where its trailing end 12 is within the end of the cast portion of lining, and expanding the former and inflating the sealing ring 9 at its leading end 10 to define a second tubular casting space, the cycle being repeated until the full length of the conduit is lined. As each casting space is filled with lining material the displaced air must escape, and this step may be performed by drilling one or more pairs of bores 7, 8 into the conduit from ground level and pumping the lining material in through bore(s) 7 whilst air escapes through bore(s) 8; alternatively, one or more pairs of open-ended tubes may extend inside the former between one end and points along its side wall (Fig. 4, not shown); other arrangements of tubes for this purpose are described. The former 3 may be inflatable or may comprise a collapsible assembly of plates.
Patent GB-1305081-A (GB)
IPC: F01N3/26
Filed: 1970-02-21
Abstract: 1305081 Purifying exhaust gas J W MORRALL 19 April 1971 [21 Feb 1970 15 Sept 1970] 8449/70 and 43963/70 Heading F1B An I. C. engine exhaust gas purifying device includes a heat-retaining member 13, Fig. 1 formed from unglazed ceramic material and arranged so that the gases pass over its outer surface in a space between the latter and a housing, the end of a tapering end portion of the member being directed towards the incoming gas stream and means for admitting air to the housing before the exhaust stream comes in contact with the member. A helical channel 16 conducts the gas in a tortuous path. Additional air enters via opening 17 and a baffle 19 prevents the escape of exhaust gas during idling. In another embodiment two ceramic members 22, 23, Fig.4 are arranged side by side but in series with respect to the gas flow, additional air being admitted through venturi 28. In a modification of this embodiment, which can also be used additionally upstream or downstream of the Fig.4 embodiment, a perforated ceramic sleeve (33), Fig. 8 (not shown) is supported between the central ceramic member (37) and the housing (30). In modifications the exhaust gases can pass through or both through and over the central member. The length of the contact path may be increased by arranging the members in series or parallel.
Patent GB-1311433-A (GB)
Title: Regenerative heatexchanger selas
IPC: F28D19/04
Filed: 1971-01-26
Abstract: 1311433 Heat exchanger seals BRITISH LEYLAND TRUCK & BUS DIVISION Ltd 4 Nov 1971 [20 Jan 1971] 3133/71 Heading B3A A method of manufacturing a counterface seal for a rotary disc-type matrix of a regenerative heat-exchanger comprises the steps of forming a composite structure of a counterface element and a heat-resistant support pad by brazing blocks of high temperature material on to the support pad, heating the composite structure to convert the exposed surfaces of the counter-face element to the required composition, and lapping the surface which engages the matrix to achieve the necessary flatness. The blocks, which may be formed by sintering, may comprise a mixture of calcium fluoride and at least 80% by weight of nickel, and the support pad ideally possesses a coefficient of thermal expansion compatible with the material of the blocks, and may comprise, e.g. ferritic steel or a nickel alloy. The brazing operation can be carried out in a vacuum or in an atmosphere of high-purity hydrogen and the heat treatment of the composite structure for at least two hours at approximately 800 C. to produce a layer of nickel oxide at the exposed surface of the counterface element. The matrix-engaging nickel oxide surface of the counterface element is then lapped to the required flatness.
Patent GB-1313857-A (GB)
Title: Apparatus for preparing reels of sheet material for unwinding
IPC: B65H16/02
Filed: 1969-07-05
Abstract: 1313857 Feeding webs MASSON SCOTT THRISSELL ENG Ltd 2 July 1970 [5 July 1969] 33987/69 Heading B8R Apparatus 11 for preparing a plurality of reels of sheet material for a subsequent unwinding operation comprises a stand provided with rollers 25 which allow a supported reel 14 to rotate about a horizontal axis, the rollers being mounted on a jack 27 so that the reel can be elevated and also turned about the vertical axis of the jack, as shown in the lower station of Fig. 2; with the reel in this position, damaged outer layers can be removed and delivered into a collection bin (not shown) or on to a belt conveyer (242), Fig. 7 (not shown). The apparatus includes a weighing station 20 constituted by a platform 21 supported on a load cell 22; in a modification the jack 27 includes a weighing mechanism to determine the initial weight of the reel and the weight when finally prepared so as to check the amount of waste. The apparatus is associated with an alignment station (30), Figs. 1 and 3 (not shown) provided with jack-supported rollers which permit the reels to be moved both axially and vertically into alignment with a shaftless unwinding station (12), Figs. 1, 4, 5, 6 and 8 (not shown), forming the subject of Specifications 1,313,855 and 1,313,856.
Patent GB-1316160-A (GB)
Title: Concrete reinforcement
IPC: C04B14/42
Filed: 1970-10-15
Abstract: 1316160 Concrete; treating glass fibres HOLLANDSCHE BETON GROEP NV 14 Oct 1971 [15 Oct 1970] 49130/70 Headings C1H and C1M Glass fibres are immersed in an alkali solution for a time sufficient for the aggressive effect of the alkali to be greater than that of the concrete which they will reinforce. NaOH or Na silicate is used and the fibres can be further treated with an acid to give a silica gel layer.
Patent GB-1325423-A (GB)
Title: 2-amino-2-aryl-acetic acids and esters thereof
IPC: C07D333/24
Filed: 1971-01-29
Abstract: 1325423 2 - Amino - 2 - arylacetic acids and esters GLAXO LABORATORIES Ltd 28 Jan 1972 [29 Jan 1971] 3523/71 Heading C2C Esters of DL-2-amino-2-arylacetic acids are prepared by subjecting a 2-arylacetic acid ester to nitrosation followed, without separation of the individual nitrosation products, by reduction to yield the desired DL-2-amino-2-arylacetic acid ester. The ester may subsequently be hydrolysed to the acid. In a modification the ester may be hydrolysed after nitrosation, without separation of individual nitrosation products to effect substantially complete conversion to acid, which acid material is then subjected to reduction.
Patent GB-1326167-A (GB)
Title: Olefin polymerisation process and catalyst
IPC: C08F10/00
Filed: 1971-04-13
Abstract: 1326167 Polymerizing olefins PHILLIPS PETROLEUM CO 13 April 1971 9253/71 Heading C3P [Also in Division B1] Ethylene is polymerized in a particle-form process using a catalyst prepared by depositing chromic oxide, or a compound convertible thereto by calcination, on a support in the presence of water, drying the support and depositing on the dried chromium-containing support a titanium alkoxide or halide. The titanium compounds are of the formula: R<SP>1</SP> n Ti(OR<SP>1</SP>) m , (RO) m Ti(OR<SP>1</SP>) n  or TiX 4  wherein R is alkyl, cycloalkyl or aryl or a combination thereof of up to 12C, R<SP>1</SP> is C 2-12  alkenyl, cyclopentadienyl or R, X is halogen, m = 1, 2, 3 or 4 and n = 0, 1, 2 or 3 and n +m = 4.