baber/WOPTO huggingface dataset:
Patent GB-1310746-A (GB)
Title: Road paving equipment
IPC: E01C19/48
Filed: 1970-10-22
Abstract: 1310746 Road paving apparatus BLAW KNOX CO 22 Oct 1970 [22 Oct 1969] 50149/ 70 Heading E1G [Also in Division G3] In paving apparatus having a strike-off plate or a finishing screed 16 which is adjustably arched to vary the crown contour of the paved surface (e.g. to accommodate bends and intersections), the contour-adjusting means 44 is actuated in accordance with a predetermined crown reference datum by automatic control means. The control means shown comprises a sensor arm 74 riding on a roadside wire, Fig. 7 (not shown), fixed at a varying height related to the variable crown contour required, movements of the arm 74 providing an electrical input to a circuit, Fig. 2 (not shown), which incorporates electrical feedback and controls a central hydraulic or electric crown-adjusting motor 44. The motor 44 drives front and rear turn buckles 52, 54 acting to tilt in their own planes upstanding front and rear pairs of plates 36-38 and 28-30 which are mounted, with a central gap 32, on a common bottom screed plate 20 and are centrally aligned by guide bars 64, 65. The screed shown includes side plates 22 coupled through pitch-adjusting devices 24, 26 to the support beams 18 of a tractor paver (not shown), and top plates 32, 34 carrying gas burners 40, 42 for use when screeding asphalt. Actuation of the turnbuckles 52, 54 thus arches the bottom plate 20 about the outer edges of the paving mat 14 whose thickness is adjusted by the devices 24, 26. In a modification, Fig. 3 (not shown), the screed side plates (112, 114) are tiltably suspended from a cross beam (148) carried by the tractor power support beams (109, 111), the beam (148) being contacted by a sensor arm (174) carried by part of the adjustablecrown screed assembly to provide feedback for an electro-hydraulic control circuit (Fig. 4, not shown). An alternative feedback arrangement for an electric motor drive is indicated in Fig. 5 (not shown). In a further modification, Fig. 6 (not shown), a non-floating screed comprises a pair of screed bottom plates (202, 204) flexibly connected at their outer ends to a rigid frame and articulated together centrally (206) for actuation by a central lifting jack (212); feedback is provided by a sensor (218) or by a mechanical feedback linkwork, Fig. 8 (not shown) associated with the crown control sensor (216').
Patent GB-1485476-A (GB)
Title: Collating apparatus
IPC: G03G15/00
Filed: 1974-11-20
Abstract: 1485476 Stapler XEROX CORP 20 Nov 1974 [27 Dec 1973 (4)] 50286/74 Heading B4C [Also in Division B8] Apparatus 71, Fig. 5, for stapling together stacks of sheets assembled vertically in pockets 57 comprises a staple supply 75, means 76 for feeding the staples into a staple driving head 174, and an anvil 77, all connected to a cylindrical carriage member 78 slidable on a guide rail 173. When actuated by a solenoid, a driver 79 hits a trigger in the head 174 to staple the sheets. Between stapling operations, the apparatus 71 is rotated outwardly about the rail to clear the walls 85 of the pockets, moved along the rail to the next pocket by a rod 109, and rotated inwardly to stapling position, the rotating movement being controlled by a rotating solenoid 79<SP>1</SP>. The stapled stacks are ejected from the pockets 57 either by opening pivoted pocket bottoms 83, Fig. 5, or laterally by means of a drive wheel 417, Fig. 10, rotated by a motor MOT-3 and mounted on a member 436 pivoted at 438. For ejection, a solenoid 431 causes its arm 433 to move the wheel 417 towards a freely rotating wheel 411 projecting through a recess 423 in the pocket wall 73. The assembly is mounted on the stapler carriage 78.
Patent GB-1423247-A (GB)
Title: Electric discharge machining
IPC: B23H7/18
Filed: 1973-10-30
Abstract: 1423247 Automatic control of discharge machining INDUSTRIELLE ELEKTRONIK AGIE LOSONE BEI LOCARNO AG 30 Oct 1973 50456/73 Heading G3R The gap width in electro-erosion apparatus is controlled in accordance with measurements of the peak voltage of an applied voltage pulse and the time between the moment when the voltage first exceeds a first predetermined valve and the moment when the voltage subsequently reaches a second lower predetermined value. As shown, the gap voltage is sensed by a detector 3 containing a plurality of pre-set voltage levels m. As the sensed voltage reaches each level, a signal is supplied to a storage register 4 which therefore stores a count representing the peak voltage reached during the pulse. The register 4 also supplies signals to a gate circuit 6 at the moments if and when the predetermined voltage values are reached, and a counter 7 receives clock pulses from a generator 14 during the appropriate time interval, if any. At the end of the applied voltage pulse, the contents of register 4 are added into counter 7 which therefore now holds a value representative of both the peak voltage and duration measurements. This value is fed into a buffer register 10 and then into a regulator circuit 15 which controls the drive of tool electrode 1. The regulator 15 includes an averaging circuit (17), Fig. 4 (not shown), which receives and averages say, four or five successive signals from the register 10 and feeds the result to an add/ subtract circuit (21) which also receives a reference value input, a signal representing the difference between the current and next preceding average values, and a signal representing the difference between the current and preceding electrode positions. The resulting combined control signal is supplied to a logic circuit (24) which determines the motor drive current in dependence on the magnitude and sign of the signal. If the absolute value of the control signal is less than a predetermined value, no drive current is supplied. The arrangement may be adapted for the control of a multiple electrode machine. In this case, the peak voltage for each gap is measured, but the relevant time duration signal is measured only for the electrode with the lowest peak voltage. A control signal is computed in respect of this electrode and is used to control the drive of all the electrodes simultaneously.
Patent GB-1372174-A (GB)
Title: Marine vessels
IPC: B63G7/00
Filed: 1971-10-19
Abstract: 1372174 Exploration/mine-hunting craft SPERRY RAND Ltd 19 Oct 1971 [23 Oct 1970] 50478/70 Heading B7A A marine craft having twin hulls 1, 2, a substantially uninterrupted silhouette and propulsion unit 4 can be manually controlled or remotely controlled by equipment in compartments 7 and 8. A carrier device 16, adapted to be carried on board the vessel or towed underwater by cable 37 and controlled by the vessel, has one or more mountings 33 for exploratory equipment 27, 28 and/or other equipment 31. The carrier device is raised or lowered by winch 13 and motor 14 and in the embodiment shown equipment 31 is a weapon to hunt a mine 38.
Patent GB-1437241-A (GB)
Title: Tarpaulin
IPC: E04G21/28
Filed: 1973-10-31
Abstract: 1437241 Releasable fastenings CHR JENSEN AB 31 Oct 1973 [1 Nov 1972 1 Oct 1973] 50659/73 Heading E2A A fastening tab 6 which is secured by glue 7 to a tarpaulin sheet 1 for the connection of a fastening rope 3, 4, is provided with raised side loops 9 enabling such sheets to be secured together at their tabs by means of a pin 11 passed through the end loop 12 of one tab and the side loops of another. The tab may be of the same tarpaulin material. For Figures see next column
Patent GB-1401439-A (GB)
Title: Floor constructions
IPC: E04B5/32
Filed: 1971-11-01
Abstract: 1401439 Reinforced concrete floors OMNIA INTERNATIONAL BUILDING SYSTEMS Ltd 1 Nov 1972 [1 Nov 1971] 50759/71 Heading E1W Prefabricated concrete panels 11 with projecting parallel lattice beam reinforcements 12 are laid edge to edge and lightweight blocks or void formers 13, 14 are placed on the panels. At least those blocks in the region of the edges of the panels are provided with a rebate 16, or alternatively a single block spanning the edge region may have a centrally disposed recess. Cast concrete poured over the blocks and reinforcement is then of greater thickness over the regions of the panel edges. The voids may be formed by metal or cardboard formers or may be expanded polystyrene or wood wool blocks. The blocks 13 may be rebated to provide space for additional site concrete adjacent the beams 12. Additional reinforcement may be placed adjacent the rebate 16.
Patent GB-1390178-A (GB)
Title: Materials for lining channels and containers for molten metal
IPC: F27D3/14
Filed: 1971-11-02
Abstract: 1390178 Pouring metal BLISS SAND & GRAVEL CO Ltd 26 Oct 1972 [2 Nov 1971] 50803/71 Heading B3F [Also in Divisions C3 and F4] A method of making a metal casting comprises transferring the molten metal from a container or a channel lined with a material containing sand and pitch in the ratio by volume of 4 to 10 of sand to 1 of pitch. Siliceous materials, e.g. ganister, fire clay or carbonaceous clay may be added up to 5-20% by weight of the sand and pitch mixture. Ground flaked or granular pitch may be used. The sand is quartzite or pig-bed. A sieve analysis of a Keuper Marl sand is given having 5-15% silt particles below 65 microns in size. Flaked or granular pitch is ground in a roller mill, then the sand is added and finally the other ingredients so that they become pitch-coated.
Patent GB-1034530-A (GB)
Title: Axminster carpet looms
Inventor: BEAUMONT THOMAS MOXON
IPC: D03D39/02
Filed: 1963-12-24
Abstract: A loop of weft inserted from one side of the shed by a needle 10 of an Axminster loom is caught, at the other side of the loom, by a shuttle 24 which oscillates in a horizontal circular track 14 and lays a yarn 11 through the loop.  The shuttle 24 is driven by a triangular shaped member 21 on the top of a shaft 20.  The shaft 20 carries a pivoted lever 37 having a peg 38 which is acted on by the selvedge yarn 11.  If the yarn 11 breaks or becomes slack the lever 37 pivots to operate a stop motion to stop the loom.
Patent GB-1384160-A (GB)
Title: Low distortion optical organ
IPC: G10H3/06
Filed: 1972-11-06
Abstract: 1384160 Electrophonic musical instruments OPSONAR ORGAN CORP 6 Nov 1972 [24 March 1972] 51009/72 Heading G5J [Also in Division G1] In a photo-electric organ, a photo-voltaic cell receiving light through a variable area track is connected to an amplifier having an input impedance less than <SP>1</SP>/ 30  of the internal impedance of the cell, so as to operate in the current mode in which it produces less distortion and is less susceptible to electrostatic interference than when in the voltage mode. Silicon cell 16, Fig. 1, having an impedence of 75K ohms is connected through a key switch 72 to an operational amplifier 36 with a feed back resistor 38 of about 470 ohms. The output of amplifier 36 is fed through a voltage amplifier 30 to a  loud-speaker 32. Key clicks are minimized by a 4À7K ohm resistor 34 which ensures that the voltage across the cell is low even before switch 72 is closed and also by the key construction, Fig. 4. The keys comprise resistive sheets 72 which may be brought into contact with wires 70 against the action of springs 84 so that on actuation of the keys, the resistance through the switch falls from ten times the cell impedence to a very low value.
Patent GB-1385393-A (GB)
Title: Laser beam welding
IPC: G02B27/00
Filed: 1972-11-08
Abstract: 1385393 Welding by fusion AVCO CORP 8 Nov 1972 [30 Dec 1971] 51571/72 Heading B3R In laser beam welding, a cloud created by interaction of the beam and the workpiece, and capable of absorbing and scattering the beam, is substantially swept away, during beam/workpiece relative movement, by gas blown through the beam slightly spaced from the zone of said interaction and preferably parallel to the workpiece. Gas used may be argon or nitrogen and may act as shielding gas to prevent oxidation. The laser may be continuous wave, e.g. gas dynamic or electrical discharge, or pulsed. The sweeping away of the cloud is for laser average powers exceeding 8 kW. Stainless and killed carbon steel workpieces are referred to. As shown, a beam 14 from a laser 11 is transmitted through a Cassegrain optical system 12 comprising elements 13, 16 and focussed on workpieces 15, 17. Either the workpieces are movable on a conventional table or the beam may be moved optically by a conventional mirror system in the system 12. Gas from a bottle 20 is metered at 21 and directed by a nozzle 22 through the beam. In Fig. 2 (not shown) a cylindrical copper gas nozzle emits less than 3 grams per second argon close and preferably parallel to the workpiece but at an acute angle to the weld joint line. In Fig. 3 (not shown) a rectangular cross-section nozzle emits less than 30 grams per second argon parallel to the workpiece and at right angles to the weld joint line.
Patent GB-1458877-A (GB)
Title: Machine for wrapping of articles
IPC: B65B9/06
Filed: 1974-11-29
Abstract: 1458877 A machine for wrapping articles FR HESSER MASCHINENFABRIK AG 29 Nov 1974 [30 Nov 1973] 51694/74 Heading B8C A wrapping machine comprises a tube-forming device 1 for a continuous sheet of wrapping material 17 the device comprising lapping components 3, 4 for overlapping the edges of the sheet, and a pair of resiliently-mounted, mutually engageable guide rollers 6, 7 arranged before the lapping components in the direction of movement of the sheet, for receiving and pressing together portions 18, 19 of the sheet bordering the respective edges thereof, to prevent relative movement between the portions; the line of engagement of the guide rollers with the sheet being substantially in the plane of symmetry of the tube forming device. As shown, articles 13 to be packaged are advanced, by a reciprocable finger 16, Fig. 1, along a table 14 and into the tube-forming device which has a shoulder 2 which forms the sheet 17 into a U-form around the articles 13, the two edges 18, 19 of the sheet being guided, by diverging edges at the upstream ends of the two parts 3, 4 of a support table 5, beneath the articles 13. The two edges 18, 19 are then passed through the guide rollers 6, 7 which are spring-loaded and which, if driven, by the machine, assist the drawing-through operation of the sheet 17. Two guide bars 8, 8 are located downstream of the forming shoulder 2. An endless conveyer band 9, is slidingly movable over the table parts 3, 4 which have guide portions 10, 11 which are progressively-shaped in relation to one another to overlap, gradually, the edges 18, 19 of the sheet, Figs. 4, 5. A sheet material separating strip 20, made e.g. of metal strip coated, or a fabric impregnated, with a polytetrafluorethylene, may be provided to extend substantially vertically adjacent the rollers 6, 7, the strip being twisted into a helix to finally lie in a substantially horizontal plane.
Patent GB-1162715-A (GB)
Title: Machine Lubricating Means
Inventor: WALL BYRON THOMAS
IPC: F02B75/02
Filed: 1966-11-21
Abstract: 1,162,715. Cylinders; bearings; lubricating; piston rings. B. T. WALL. 21 Nov., 1966, No. 52010/66. Headings F2A and F2T. [Also in Division F1] In a bearing, a porous metal element is filled with liquid lubricant, has a pervious bearing surface and has all other surfaces made impervious so as to prevent outflow of liquid lubricant therefrom. The non-bearing surfaces may be sealed by burnishing, spraying or by laminating. In an embodiment, a metal shell 60, Fig. 3, is recessed so as to receive a porous insert 66 therein and is provided with a lubricant inlet 68. In another embodiment, a pistonring, Fig. 6, is made of porous metal 80 having a pervious surface 84, and sealing layers 82. In a further embodiment, a gudgeon-pin bearing is made of porous metal and has its non-bearing surfaces sealed. Piston-rings 20 and a gudgeonpin bearing 24 are incorporated in a machine 10, Fig. 1, which is also provided with a porous insert 48 in a wall 14 of a cylinder-block 12. The insert 48 is held in a recess 46 of the wall 14 by a retainer ring 50 which is attached to the cylinder block 12 by bolts 52; and is supplied with lubricant through a passage 54 in the cylinder block 12, the latter also having a lubricant-return passage 56 therein. Thus lubricant is conveyed to the reciprocating piston rings 20 through a pervious surface 49 of the insert 48. Alternatively, lubricant may be supplied to the piston rings 20 through passages in the crank-shaft, connecting rod, gudgeon-pin and through the piston-ring grooves. The machine 10 may be a compressor or an internal combustion engine.
Patent GB-1184177-A (GB)
Title: Process for the Production of Rotationally Moulded Articles
Inventor: SCHAINBERG ERNST
IPC: C08L27/06
Filed: 1967-11-15
Abstract: 1,184,177. Rotational moulding. DYNAMIT NOBEL A.G. 15 Nov., 1967 [16 Nov., 1966], No. 52082/67. Heading B5A. An article having a rough inner surface to which a foam can readily adhere is produced by rotational casting of a first plasticized vinyl chloride polymer composition, while heating to cause initial gelation, i.e. formation of a solid skin, of the first composition and adding a second vinyl chloride polymer composition of particle size 0À5-2À0 mm. rotating and heating the mould to complete gelation of the first plasticized composition. The second composition preferably has a K-value at least 5% higher than that of the first, preferably 60-80, is in an amount 20-40% by wt of the first, and is added at a temperature 10-15‹ C. less than that at which the complete gelation is effected. The compositions, which may be in powder form or pastes, may comprise polyvinyl chloride or a vinyl chloride copolymer e.g. with vinyl acetate. A foam material e.g. polyurethane, polyether or polyester may be applied to the rough inner surface of the article.
Patent GB-1329133-A (GB)
Title: Extrusion
IPC: B21C23/21
Filed: 1970-11-03
Abstract: 1329133 Extruding CRANE ENFIELD METALS PTY Ltd 3 Nov 1970 [26 Nov 1969] 52137/70 Heading B3P A die 13 in a tube extrusion press is mounted in a die holder 15 with a clearance 21 so that the die has a limited radial movement during extrusion. The die is axially limited by a flange 22 and slides against a bolster insert 17. To minimize the sliding friction the bolster may rest on part-spherically ended pins (23), Fig. 3 (not shown). During extrusion the die is centred relative to a mandrel by the extrusion forces to produce a uniform walled tube.
Patent GB-1121602-A (GB)
Title: Improvements in the production of gases
Inventor: KAY HARRY
IPC: B01J19/14
Filed: 1964-12-23
Abstract: An incombustible gaseous mixture is produced by partially combusting a hydrocarbon with air in a primary combustion chamber to produce a first gaseous effluent, introducing air into said effluent and continuing the combustion in a secondary combustion chamber to produce a second gaseous effluent therefrom.  The second effluent is analyzed and the quantity of air introduced into the first effluent controlled so as to maintain the composition of the second effluent constant.  The fuel may be completely combusted in the second chamber.  The rate of flow of air into the primary chamber may be controlled so as to maintain the temperature in the primary chamber constant.  The combustion in the primary chamber may be controlled so as to produce a gas consisting of N2, H2, CO and CH4.  The second effluent can be cooled and purified to produce a suitable protective atmosphere for heat treating metals (e.g. 85% N2, 13% CO2, 1% CO, 1% H2).
Patent GB-1438725-A (GB)
Title: Mixture separation devices
IPC: B01D21/00
Filed: 1973-11-12
Abstract: 1438725 Parallel or series settling tanks PIELKENROOD-VINITEX BV 12 Nov 1973 [13 Nov 1972] 52423/73 Heading BID Two flotation and/or settling tanks in a basin 1 have inclined separation passages which may be formed by inclined corrugated plates or troughs and are so arranged that the tanks may be connected in series or in parallel, by shifting gates 18 and 19. Series flow as shown is from inlet channel 4 to outlet channel 15. For parallel flow, gates 18 and 19 are removed and set in guides 21 whereupon inlets 4 and 11 are connected together and outlets 8 and 15 are connected together. The connecting channel 20 may be replaced by a pipe 24 (Figs. 2 and 3 not shown) having a valve and terminating in a transverse slotted pipe adjacent a baffle plate. Each tank may be replaced by an array of tanks in parallel, the first group having more tanks than the second. The tanks have flotation zones, scum overflow pipes 5 and 9 and overflow weirs 7 to outlets 8 and 15. A skimmer may remove scum into inlet 11.
Patent GB-1388457-A (GB)
Title: Friction welding machine
IPC: B23K20/12
Filed: 1972-11-14
Abstract: 1388457 Welding by pressure CLARKE CHAPMAN Ltd 5 Nov 1973 [14 Nov 1972] 52436/72 Heading B3R A friction welding machine has means for holding workpieces, which means includes a head 28 which moves along the machine and supports one of the workpieces, and ram equipment to force the workpieces together during their relative rotation about a rotational axis, the ram equipment being arranged to exert thrust on the head along a line inclined to the rotational axis. In an embodiment a base 10 includes end members 12, 14 interconnected by tie rods 16 and supports two parallel longitudinal slides, one 18 having a horizontal slide surface and the other having two inclined surfaces forming a roof shape. A clamp 26 for one workpiece and a head 28 including a chuck 29 driven by an electric motor 50 for another workpiece, are supported by the slides, the head 28 and the end member 14 being connected by two hydraulic rams, one on each side of the head 28. The cylinder 34 of each ram is pivoted on the member 14 by a bearing 30 and the piston-rod 36 is pivoted to the head 28 by a bearing 32, the thrust exerted by the rams being applied by one workpiece held in the chuck 29 against the other workpiece held in the clamp 26 and engaged by an end stop 24 carried by the member 12. The thrust results in tensile stress in the rods 16 and compressive stress in the base part 10 between the members 12, 14. The longitudinally movable workpiece may be non-rotatable while the fixed workpiece is rotatable and the tie rods may be arranged above the slide surfaces. The inclined slide surfaces may face one another, only one tie rod may be employed and the machine may operate vertically. Two movable heads may be provided to perform two welds simultaneously and one or both heads may have inclined ram means.
Patent GB-1210076-A (GB)
Title: Fence post
Inventor: TYRRELL PETER WADE
IPC: E04H17/06
Filed: 1967-11-20
Abstract: 1,210,076. Posts. C. A. FRANCIS. 28 Jan., 1969 [20 Nov., 1967], No. 52773/67. Heading E1B. A concrete post 10 with pre-stressed high tensile steel wires as longitudinal reinforcement has two sets of bores 11, 11a from pairs of opposite surfaces. The posts may be used for rail and pale fencing 12 or wire mesh fencing 12, 13. The concrete preferably uses high alumina cement. (For Figure see next page)
Patent GB-1254358-A (GB)
Title: Production of dextranase
Inventor: CHAIET LOUIS
IPC: A61Q11/00
Filed: 1969-10-28
Abstract: 1,254,358. Dextranase. MERCK & CO. Inc. 28 Oct., 1969 [29 Oct., 1968], No. 52778/69. Heading C3H. A method of recovering purified dextranase from a crude solution comprises adding an ionexchange cellulose to the solution, adjusting the pH to separate the impurities and dextranase by selective adsorption, and separating and recovering the dextranase from the solution or the ion-exchange cellulose as the case may be. The dextranase may have been produced by the growth of Penicillium funiculosum; the culture broth may have been concentrated or the dextranase precipitated by ammonium sulphate before the ion-exchange process. The ionexchange cellulose may be a DEAR-cellulose.