baber/WOPTO huggingface dataset:
Patent GB-1409685-A (GB)
Title: Easy open container end closures
Filed: 1973-10-18
Abstract: 1409685 Easy-open can ends AMERICAN CAN CO 18 Oct 1973 48587/73 Heading B8D The handle or finger ring portion 28 of a pull tab 28, riveted to a scoreline-defined removable panel 18 of a can end, is releasablyheld against the panel by dimples 44 and 46 to preventing lifting of the ring portion away from the panel on bulging of the latter due to internal pressure. Modified dimple shapes are disclosed in Figs. 4 and 5 (not shown). The can end may be of steel, tin-plate, aluminium, or plastics.
Patent GB-1407179-A (GB)
Title: Radial piston motor
IPC: F03C1/247
Filed: 1973-10-19
Abstract: 1407179 Hydraulic reciprocating motors ROBERT BOSCH GmbH 19 Oct 1973 [21 Oct 1972] 48875/73 Heading F1A In a radial piston hydraulic motor comprising a rotary cylinder block 5 mounted on a pintle valve 4 and having pistons 8 with slippers 9 engaging an eccentric track ring 10, the distance between the top or bottom dead centre points on the pintle and the adjacent ends of the high-pressure port for a uni-directional rotation, Fig.6 (not shown), or the adjacent ends of both parts 17, 18 for a reversible rotation, as shown in Fig. 2, bears a specified relationship with the coefficient of friction between the slippers and track ring, so that build-up of pressure forces inhibiting starting of the motor is prevented within the angular range in which they exceed the effective power. A groove 27 and a port 30 provided at the T.D.C. and B.D.C. points communicate with the lowpressure motor housing interior. The track ring eccentricity is adjustable by hand wheel 14.
Patent GB-1514586-A (GB)
Title: Greenhouses
IPC: A01G9/24
Filed: 1975-12-02
Abstract: 1514586 Greenhouse folding door or ventilator BABY RELAX Ltd 1 Dec 1976 [2 Dec 1975] 49492/75 Headings E1A and E1J A green house has an opening for access and/or ventilation defined by two horizontally spaced vertical members 11, 12 and a cover 14 of flexible sheet material having a plurality of horizontal slats 16 secured thereto at vertically spaced positions. A pair of vertical guides 17 frictionally engage the slats allowing vertical movement of the cover and holding it in a range of partly closed positions. The slats 16 may be channels with lips 18 through which the cover passes and in which it is held by a keeper 19 of plastics tube. The guides 17 may be flexible lines clamped between the keeper and slat through which latter they pass. Similar alternative clamping means are illustrated in Figures 3 and 4 (not shown). Alternatively an irregular section guide may be releasably clamped in edge channels (not illustrated).
Patent GB-1403100-A (GB)
Title: Plow system with plurality of plow units and means for adjusting spacing between units in a continuous manner
IPC: A01B15/14
Filed: 1972-10-27
Abstract: 1403100 Ploughs DIETRICH MFG INC 27 Oct 1972 [16 Feb 1972] 49723/72 Heading A1B A plough system has plough units 17 rotatably mounted on vertical axes on a horizontal inclined beam 15 of a main frame 13, the units 17 being pivoted simultaneously so that the reaction force when ploughing pivots the main frame about an axis 12 to align the cutting lines of the unit with the direction of travel, thereby changing the spacing between the furrows. Each plough unit 17 is formed with a flange 18 pivoted to a common guide beam 19, and the flange of the leading unit has an extension 18a pivotally connected to a hydraulic ram 20 for adjusting the units simultaneously. The trailing end of the main frame is supported by a trailer section 27, the rearmost plough unit is fast with the trailer section so that the entire section 27 is turned when the guide beam 19 is shifted. The section 27 is provided with a support wheel 98 located so that it follows in the furrow formed by the rearmost plough unit, and a hydraulic ram 30 raises the junction between the main frame 13 and the trailer section 27 relatively to the support wheel 28 to lift the plough units off the ground when required. A steering mechanism 31 is responsive to turning of a tractor 11 to cause the trailer section to track the tractor. The steering mechanism has an arm 42 pivotally mounted at 12 on the main frame 13 and turning with the tractor chassis. The arm 42 is connected by a tie rod 43 to an arm 79 which is pivoted at 28 to the trailing end of the beam 15 and which is linked to the axle of the support wheel 98. Movement of the tractor 11 to the right thus causes. anti-clockwise movement of the arm 79 and through a linkage 83, 85 shifts the wheel 98 to the left. During ploughing a tractor wheel W follows a previously formed furrow; the main frame 13 can be shifted laterally relative to the tractor hitch to adjust it to different width tractors. A second support wheel 90 is vertically adjustable and engages the ground during ploughing to limit the ploughing depth.
Patent GB-1324922-A (GB)
Title: Bone mineral analyzer
IPC: G01N23/08
Filed: 1971-10-26
Abstract: 1324922 Radiation absorption bone measurement NORLAND CORP 26 Oct 1971 [26 Oct 1970] 49739/71 Heading G1A In an apparatus for the determination of the mineral content of bone and associated tissue by the absorption of Y rays in which the part to be measured is enclosed in fluid having the same absorption as the tissue and the measurement is obtained by a comparison of a reading known to be obtained solely from tissue and fluid with one from bone, tissue, and fluid. The enclosure is scanned by a collimated beam from a radio active source in a programmed manner whereby in response to the actuation of start button 42, Fig. 1, motor 14 causes the arm 13 carrying source 19 and sensor 21, 22 to move in its scan at a fast speed until the detector signal level indicates that the beam has encountered bone 17, 18; the motor reverses and backs off the beam a predetermined distance from the bone, and a referencing or zeroing reading is taken and stored in a capacitor; the forward scan is recommenced at a slower rate and a logarithm signal using the stored tissue-liquid measurement as a reference is derived from a comparator and log converter and integrated to indicate on a digital meter the mineral content. A number of scans may be averaged and a separate beam may be used for locating the edge of the bone. In the case where the beam may be called upon to scan two laterally spaced bones means may be provided whereby a desired one is measured. The scanning is terminated by the departure of the beam from the trailing edge of the bone and two pulses resulting from the leading and trailing edge may be used to measure the distance across the bone. The drive includes reversible clutch mechanism and interlock protection against false movement. The integrating capacitor is precharged to approximately the reference value during the forward bone search. Alternatively the steps may be controlled individually by push buttons, and/or the measure and reference signals may be separately integrated and subtracted. The time constant of the capacitor may be made to differ during approach and measuring.
Patent GB-1386390-A (GB)
Title: Screw conveyors
IPC: B29C48/605
Filed: 1973-10-26
Abstract: 1386390 Screw mixers WERNER & PFLEIDERER 26 Oct 1973 [20 Nov 1972] 49909/73 Heading B1C [Also in Division B8] A screw conveyor, for treating flowable materials, comprises a housing G enclosing a worm 1 having transverse shearing webs 4 disposed across a helical channel 3 defined by the thread 2 of the worm, the height of the transverse shearing webs is less than that of the thread, and transverse splitting webs 5 disposed across the helical channel and which are substantially equal in height to the height of the thread, the transverse splitting webs each having a shearing gap 6 extending substantially radially with respect to the worm. The gap 6 may be central of the splitting web or at one end thereof adjacent the thread. Also the gap may taper or have parallel sides and may be inclined to the vertical. Both the splitting web and the shearing web may be curved into the worm or thread as shown in Fig. 1 to avoid areas where the material may stagnate. Normally a splitting web follows a shearing web in the direction of travel of the material. For Figures see next page
Patent GB-1098148-A (GB)
Title: Improvements in or relating to polyimidurethanes
IPC: C09D5/25
Filed: 1966-11-08
Abstract: Polyimidurethanes are prepared by reacting a bis-hydroxy alkyl imide of a tetracarboxylic acid with a polyisocyanate optionally in the presence of an anhydrous organic solvent. The imides may be derived from such acids as pyromellitic acid, benzophenone tetracarboxylic acid, diphenyl tetracarboxylic acids, furan tetracarboxylic acid, naphthalene tetracarboxylic acids, cyclopentane tetracarboxylic acid and bis-dicarboxyphenyl sulphone by reaction with aliphatic or cycloaliphatic aminoalcohols or by reaction of a diimide with an alkylene oxide.  Suitable aminoalcohols are ethanolamine, propanolamine, butanolamine, hexanolamine or dodecanolamine.  The polyisocyanate may be toluylene diisocyanate, dimerized toluylene diisocyanate, 4,41-diphenylmethane diisocyanate, naphthalene-1,5-diisocyanate, hexamethylene diisocyanate, triphenylmethane triisocyanate or the reaction product of trimethylol-propane with toluylene diisocyanate. Exemplified solvents are dimethyl formamide, if desired in admixture with ethyl acetate or methylene chloride and dimethyl acetamide.  A basic catalyst may also be included in the reaction mixture.ALSO:Bis-b -hydroxyethyl pyromellitic imide may be prepared by reacting pyromellitic acid dianhydride with 2 mol. equivalents of amino-ethanol in a solvent such as dimethylformamide, distilling off the solvent and dehydrating the residue.ALSO:Metal sheet e.g. that of aluminium may be coated with a solution in an anhydrous organic solvent of a polyimidurethane prepared by reacting a bis-hydroxy alkyl imide of a tetra-carboxylic acid with a polyisocyanate.  The solvent is evaporated and the coating hardened at room or higher temperature.  Examples describe the coating onto such metal sheet of polyimidurethanes derived from bis-b -hydroxyethyl pyromellitic imide and (1) a toluylene diisocyanate isomer mixture in dimethyl formamide (2) the reaction product of trimethylol propane with toluylene diisocyanate in dimethyl formamide/ethyl acetate (4) naphthylene-1,5-diisocyanate in dimethyl acetamide and (5) triphenylmethane triisocyanate in dimethyl formamide/methylene chloride.
Patent GB-1445607-A (GB)
Title: Production of ultra-hard metals
IPC: C22C1/05
Filed: 1973-10-30
Abstract: 1445607 Powder metallurgy INTERNATIONAL NICKEL Ltd 30 Oct 1973 [17 Nov 1972] 50300/73 Heading C7D A hard sintered refractory body containing at least 40 vol. per cent of a hard refractory compound e.g. carbide, boride, or silicide, dispersed in a metal matrix is made by dry intensive high energy milling together powders of a refractory compound forming metal or alloy, a matrix metal or alloy selected from Co, Ni, Ag, Cu, Pt, Pd, Rh, Re, Ru, Al, Pb, or Zn and at least one particulate constituent which forms the refractory compound with the refractory compound forming metal. The intimately united mixture is then consolidated and sintered. The refractory metal may be W, Mo, Cr, Nb, Ta, Ti, Zr, V, or Hf. The refractory compound forming constituent may be C, B, or Si. The powders preferably < 1000 microns are dry milled optionally in N 2  or O 2  in vibratory or planetary ball mills or attritor mills as disclosed in Patent Specifications 1298944 and 1265343 and the milled powder mixture is preferably preheated at 816-927C prior to compacting and sintering or hot pressing. Examples are given of the production of cemented WC-Co and TiC-Mo-Ni.
Patent GB-1169539-A (GB)
Title: Improvements in or relating to Electrically Operated Position Indicators
Inventor: KING LESLIE
IPC: G08C19/44
Filed: 1965-11-29
Abstract: 1,169,539. Control of stepping motors; electric motors. PLESSEY CO. Ltd. 23 Nov., 1966 [29 Nov., 1965], No. 50660/65. Headings H2A and H2J. An electrically operated position indicator comprises a permanent magnet 1 pivotally mounted about fulcrum 2, and an annular support 3 of non-magnetic material carrying electromagnets 4-13, the axis of the support 3 being coincident with that of the fulcrum 2. The magnets 4-13 are spaced equally about the support 3, but the tips of their polepieces are shaped so that the axes of no two electromagnets are co-linear. Thus, one of each pair of diametrically opposite polepieces has its tip lying on a surface coaxial with fulcrum 2, whilst the opposite polepiece has its tip offset from said surface. If the winding associated with the magnet 4 is energized, for example, and then de-energized, the axes of the magnets 1, 4 are aligned. If subsequently the winding of the magnet 9 is energized, the magnet 1 will pivot through slightly less than 180 degrees until it is aligned with the magnet 9.
Patent GB-1275576-A (GB)
Title: Gas laser tube mount
IPC: H01S3/02
Filed: 1969-10-15
Abstract: 1275576 Lasers RCA CORPORATION 15 Oct 1969 [17 Oct 1968] 50730/69. Heading H1C A gas laser tube 18 is resiliently mounted on a base 10 by a plurality of pads 28 or a continuous layer of a resilient bonding material, such as silicon rubber; which is interposed between a rigid ring support 26 and the tube, the ring support being detachably secured by screws 32 to a support member 16 attached to. the base. Supports 12, 14 for the resonator mirrors 34, 36 are carried, by the base, and the Brewster angle ends 22 and 24 of the laser tube are respectively extended to the mirrors by an enclosure 44 and a bellows 48 for the purpose ofr excluding dust. Optionally a further resilient mounting may be provided for the tube which comprises a similar bonded ring support 38, a supporting, spring 42 and a base support 40. The pads 28 may be formed by extruding uncured silicon rubber through holes in the ring support, Fig. 3, (not shown).
Patent GB-1322959-A (GB)
Title: Solid electrolyte
IPC: H01M8/12
Filed: 1970-10-26
Abstract: 1322959 Solid electrolyte HITACHI Ltd 26 Oct 1970 [27 Oct 1969] 50791/70 Heading H1B A solid electrolyte for a fuel cell consisting of a solid solution having a lattice constant between 5À41 and 5À48 angstrom measured at room temperature has a composition represented by the general formula wherein Ln is at least one element selected from La, Nd, Sm, Eu and Dy; L<SP>1</SP>n is at least one element selected from Y, Gd, No, Er, Tm, Yb and Lu; x has a value over the range 0À05-0À3; y a value over the range 0-less than 1 and y a value over the range 0-0À05. Such a composition has an conic transfer number for oxygen close to 1 and a specific resistance of about 40 ohm. cm. at 700‹ C. Hence a fuel cell using such an electrolyte can operate at the relatively low temperature range 600-800‹ C. To manufacture the electrolyte the raw materials  in powder form are mixed and fired in air at 1200-1300‹ C. to form a solid body. This body is ground to powder and polyvinyl alcohol added as a binder, this mixture being pressure-moulded into a disc shape and the shaped body fired in air at 1750‹ C. The specification gives specific examples of the electrolyte composition.
Patent GB-1405495-A (GB)
Title: Voltage compensated electrical control system
IPC: G05D23/24
Filed: 1972-11-03
Abstract: 1405495 Automatic regulation of voltage and temperature ROBERTSHAW CONTROLS CO 3 Nov 1972 [5 Nov 1971] 50884/72 Headings G3R and G3X An electrical control system includes a gate controlled rectifier which receives a regulated voltage over a compensating resistor, so that the triggering of the rectifier is not affected by supply variations. In the circuit shown, a centre-tapped secondary winding 31, 33 of a mains transformer 11 forms part of a bridge network which also includes a variable resistor 41 and a thermistor 19 responsive to the temperature of a furnace. Energization of a resistor 17 controls a gas supply valve to increase the furnace temperature, while a resistor 15 controls a cooling air-conditioning compressor. Normally, the bridge is balanced and the SCR 13 is blocked, but unbalance caused by temperature variations altering the resistance of thermistor 19 produces a sufficient gate-cathode voltage to fire the SCR at a point in the appropriate half-cycle to energize resistor 15 or 17 and thus correct the temperature change. A Zener diode 25 is connected to the cathode of the SCR 13 and is arranged to break down if the supply voltage exceeds a given level. A resistor 21 then conducts current proportional to the excess voltage and reduces the gatecathode voltage correspondingly so that the firing instant of the SCR is unaffected by surges or other variations in the supply.
Patent GB-1142870-A (GB)
Title: Improvements in or relating to building structures
IPC: E04B1/18
Filed: 1966-11-14
Abstract: 1,142,870. Building element and structure. P. HAMILL. 9 Nov. 1967 [14 Nov., 1966], No. 50921/66. Heading E1W. A flat building element 1 in the shape of an isosceles triangle which may have truncated corners at opposite ends of its base, and having the equal sides shorter than the base is provided on one main face with an integral beam 9 extending parallel to and in spaced relationship to said base. Three such elements may be connected together along their equal sides to form a composite unit 11 which may be positioned with the beams 9 on the underface to form a floor of a building and with the beams 9 on the upper face to form a ceiling of a building. Recesses on the edges of the equal sides of each element which are intersected by the centre line of the beam cooperate to form oblong apertures 15 in a unit 11 for engagement with columns 21, 16, which may be of steel or concrete, Fig. 10b (not shown). Between storeys, the beams 9 on the underface of a floor unit rest on the beams 9 on the upperface of the subjacent ceiling unit optionallly through a resilient acoustic strip, the enclosed space being available for accommodating services. The elements may be of reinforced concrete with exposed reinforcement in a rebate along the equal sides of the isosceles triangle to facilitate the formation of welded grouted connections between adjacent elements forming each unit. The units may also be of laminated wood. At least one column may be hollow for reception of a rainwater downpipe 33 and/or services. A building may comprise a plurality of assemblies as shown in Fig. 10a, connected side-byside, each extending through a desired number of storeys.
Patent GB-1505099-A (GB)
Title: Reel mounting means for a wire take-up apparatus
IPC: B65H75/14
Filed: 1975-12-16
Abstract: 1505099 Reels FURUKAWA ELECTRIC CO Ltd 16 Dec 1975 [18 Dec 1974] 51529/75 Heading B8M [Also in Division D1] At least one of two reel mounting spindles 14, 16, of a winding apparatus, is provided with a wire clamping piece 54 which clamps a wire end b of a wire a between the piece 54 and a flange 12b of the wire take-up double-flanged reel 12 as the rigid pieces 52a of the spindle pressingly abut the flange 12b in use. The pieces 54 and 52a are provided on a press-plate 50 of the spindle. The wire is led through an opening 12d of the flange 12b before being clamped. The pieces 52a may be of iron or steel material. The clamping piece 54 may have a resilient portion 54a, preferably a leaf-spring, and both the clamping and the press-pieces may have resilient frictional members 58 to prevent slipping thereof relative to the reel 12. The spindle 16 may have a press plate 88 lined with a frictional member 88a. The reel is rotated by the spindle 16 operated by a motor (84) Fig. 1B (not shown). Alternatively the spindle 4 may rotate the reel 12. The spindles are moved into and out of the bore 12a of the reel 12 by a motor (38) and a motor (80) respectively, Figs. 1A and 1B (not shown). The pieces 52a may be integrally made to constitute a semicircle or a rectangle, or even a circle in which case the clamping piece 54 may be mounted on the circular piece by a screw (62), Fig. 4 (not shown). A piece 62a on the screw presses the wire end b against the flange 12d. Alternatively a screw (62) is provided on the clamping piece 54 to extend through a hole (not shown) in the press piece to clamp the wire end b, or a holder (not shown) may be provided in the press piece to hold the wire end b. In another embodiment, Fig. 6 (not shown), the press plate 50 may be slidably mounted on the spindle 14 and adapted to be moved axially of the spindle 14 independently of the spindle's movement.
Patent GB-1035900-A (GB)
Title: Improvements in or relating to distillation processes
IPC: C02F1/16
Filed: 1964-12-18
Abstract: 1,035,900. Multi-stage flash distillation systems; desalination of water. D. WALFSON. Dec. 18, 1964 [Dec. 20, 1963], No. 51551/64. Heading B1B. Liquid, e.g. saline water, is submitted to flash distillation in a plurality (n) of stages 38, 37... connected in series the pressure in which diminishes from stage to stage, by passing a portion of the water, via line 54, through a heat exchanger 57 where the water is heated by an external source of heat and introducing the hot water into the flash compartment 38b of the stage of highest pressure, while the remainder of the feed water is divided into (n-1) streams 64, 63... 59 each of which is introduced into the flash compartment of one of the stages 37,... 32, each stream prior to introduction into its appropriate stage being passed through a heat-exchanger 52... 47 wherin it is preheated by the condensate (i.e. distilled water) from the preceding stage. Another stream of the feed water is passed via line 56 through heat-exchanger 46 where it is heated by part of the condensate from chamber 32a. This preheated water is mixed with part of the brine withdrawn from chamber 32b, and the mixture is recycled to the flash chambers. The vapours evolved in compartment b of each stage is condensed in compartment a of the stage by contact with a spray of condensate from the succeeding stage, e.g. the condensate from compartment 37alpha is pumped through duct 44 into the upper part of compartment 38alpha. The streams of distilled water 65 to 71, after passing through heat exchangers 46 to 52, combine into a single stream 72 which then divides into two streams 73 and 74. Stream 73 is introduced into compartment 32alpha, and stream 74 is withdrawn from the system as product. Brine is discharged from the compartment 32b through conduit 76. The feed water stream 54 may be heated, in heat exchanger 58, by direct contact with a hot hydrocarbon oil or by indirect heatexchange with a stream of liquid, from another plant, which is required to be cooled. A multistage flash distillation apparatus is also described in which the condensation of the vapours is affected by indirect heat exchange with condensate.
Patent GB-1157810-A (GB)
Title: Improvements in or relating to Rotary Air Motors
Inventor: CROSS RONALD WILLIAM
IPC: F01C1/344
Filed: 1965-12-07
Abstract: 1,157,810. Air hoists. BROOM & WADE Ltd. 30 Nov., 1966 [7 Dec., 1965], No. 51879/65. Heading B8B. [Also in Division F1]  An air hoist, operable by a rotary air motor (see Division F1) having an eccentrically mounted rotor formed with a plurality of radial slots slidably mounting vanes, and, upstream of valve control means, operable to supply air to the motor to drive it in either direction, a valve controlled bleed passage which opens to supply air to the vane slots to urge the vanes outwardly before the rotor commences to rotate, comprises a shaft 14, Fig. 1, driven by the motor 10 which through reduction gear mechanism 16 drives a toothed sprocket 17 over which a chain 18 passes to raise and lower a hook 11. The reduction gear mechanism 16 comprises two gear-wheels 19 formed integral with planet wheels 20 which co-operate with a sun-wheel 15 keyed to a shaft 21 which is formed integral with the sprocket 17. A brake drum 71 splined to the shaft 14 and carrying brake linings (not shown) is operable by a cam 72 pinned to a shaft 73 operable by a handle (50), Fig. 2 (not shown) which also through a gear segment and a pinion and rack, controls the valve controlling the air supply to the motor and through this valve a valve controlling the bleed passage supplying air to the vane slots.