baber/WOPTO huggingface dataset:
Patent GB-1196100-A (GB)
Title: Beam Width Defining Structure for Linear Accelerator Radiotherapy Devices
Inventor: RESNICK LARRY
IPC: G21K1/04
Filed: 1968-11-06
Abstract: 1,196,100. Beam defining diaphragm. VARIAN ASSOCIATES. 6 Nov., 1968 [24 Nov., 1967], No. 52587/68. Heading H5R. An apparatus for defining the width of a beam of radiation comprises a pair of metal jaws having opposed facing surfaces, at least one of the jaws being movable and pivotally connected to two non-parallel shafts by means permitting the jaw to slide along the shafts, the angle between the shafts being such that the facing surface of the jaw is maintained parallel to the edge of the beam defined by the jaw over a range of beam widths. The apparatus is illustrated by Fig. 2 wherein jaws 38 are both movable along skew shafts 58 and 28 on pivotable collars 68 and 40 respectively. A drive means e.g. sprockets 80, 82 and chains 78 may be fitted to move the jaws along the shafts which in the particular embodiment is accomplished by threading the ends of shaft 28 with threads 35 of opposite hand supporting the shaft on end bearings 32 and centre bearing 36 so as to rotate and attaching a pivoting bush 40 suitably threaded to each of the blocks 38 whereby rotation of the rod either separates or closes the jaws, the inclination of the jaws with respect to the beam being governed by the angle between the shafts 28 and 58 and the distance between the points of attachment of bushes 40 and 68 on the blocks 38. If desired each or the jaw may be connected at opposite sides to two pairs of non-parallel shafts when the two threaded shaft may be coupled, e.g. by sprocket and drive chain, so as to rotate synchronously. As is indicated in the drawing both jaws may be mounted for movement. Preferably as shown one shaft 28 serves two jaws and the other two support shafts 58 are skewed in opposite senses with respect to the single shaft. The arrangement of the facing surfaces may be defined if desired as being such that the facing surface of the or each movable jaw is coplanar with the emission point of the radiation beam.
Patent GB-1337455-A (GB)
Title: Pulse arc welding
IPC: B23K9/09
Filed: 1971-11-12
Abstract: 1337455 Automatic control of arc welding OSAKA TRANSFORMER CO Ltd 12 Nov 1971 [13 Nov 1970] 52777/71 Heading G3R The magnitude of current pulses superimposed on a D.C. arc welding current is measured and compared with a reference voltage. The difference between the measured and reference values is used to regulate the pulse magnitude. In one embodiment, an electrode 2 and workpiece 3 receive welding current from a rectified three-phase supply 1 and pulses from a transformer 600 by way of a thyristor 601. Pulse magnitude is detected by a shunt 70 which supplies a voltage to capacitor 606 for comparison with a pre-set voltage on potentiometer 605 connected in parallel with a constant voltage diode 604. The resulting voltage controls the conduction of transistor 608 and thus varies the charging rate of a capacitor 610. When a certain voltage is reached, a unijunction transistor 611 begins to conduct, and a pulse from transformer 613 turns on the thyristor 601. The signal from shunt 70 thus controls firing angle of the thyristor and hence the duration of the welding pulses. In another embodiment, Fig. 4 (not shown), the pulse magnitude is detected by a current transformer (71) with two secondary windings. One secondary winding causes the transformer core to partially saturate, while the other winding produces an output control signal. In a third embodiment, Fig. 5 (not shown), the thyristor 601 is replaced by a simple diode. The measured pulse magnitude is compared with the voltage from a cell, and the difference signal energizes a motor to drive a sliding terminal on transformer 600 to vary the amplitude of the welding pulses. A fourth embodiment, Fig. 6 (not shown), comprises a first magnetic amplifier which is controlled by a signal representing measured pulse magnitude, and which in turn controls a second magnetic amplifier through which pulses are applied to the welding arc.
Patent GB-1418368-A (GB)
Title: Acoustic cabinet for use with high fidelity sound reproduction  equipment
IPC: H04R1/02
Filed: 1973-11-14
Abstract: 1418368 Loud-speaker cabinets F PLABETT DI GRANATA and S MANZOTTI 14 Nov 1973 [26 July 1973] 52817/73 Headings H4J and H4X Loud-speaker cabinet comprises a two part plastics, e.g. semi expanded polystyrene, moulding, one part 1 comprising a box with one open side, arranged to receive an electric connector, at 9, while the other part is arranged to carry at least one loud-speaker and provides a screened front face for the cabinet. The two parts are held together by screws passing through hollow studs 5 on one part and secured to studs 6 on the other part. The two parts have complementary sections 7, 9, about their peripheries provided with packing to seal the parts when they are assembled. As described the studs 5 and 6 are formed with ends having complementary sections to ensure their alignment, the studs have reinforcing fillets 22 about their junction with the parts and the box section is formed with a rim 11 having a notch 12 to accommodate a lead wire when the box section is mounted on a wall. The front panel 2 has horizontal ribs 3 over its entire surface.
Patent GB-1444815-A (GB)
Title: Treatment of water
IPC: B01J39/04
Filed: 1973-11-14
Abstract: 1444815 Ion exchange CLARKE CHAPMAN Ltd 24 Oct 1974 [14 Nov 1973] 52933/ 73. Heading B1J Raw water is passed through a first vessel containing cation-exchange resin, the output therefrom divided into first and second streams and passed to a second vessel containing a bed of weak anion and a bed of strong anionexchange material, the first stream passing through the strong anion-exchange material only and the second stream passing through the weak anion-exchange before passing the strong anion-exchanger. The proportion of first to second stream may be adjusted to achieve a desired ratio of silica to acid ions in the combined streams passing through the strong anionexchanger.
Patent GB-1093540-A (GB)
Title: An automatic landing device
Inventor: LAZAREFF MIRCHEL
IPC: B64C39/06
Filed: 1964-12-31
Abstract: 1,093,540. Pilotless aircraft. NORD-AVIATION SOCIETE NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. Dec. 31, 1964 [Jan. 9, 1964], No. 53082/64. Headings B7G and B7W. A V.T.O.L. aircraft is controlled remotely, and is landed automatically on a tilted platform (e.g. at 35 degrees to the horizontal) by an automatic height control system in which command signals are derived from signals representing altitude (detected at the aircraft), distance from the platform (detected by radar or infra-red detectors on the platform), and rate of change of this distance. The aircraft, which is pilotless and of the tail-sitting kind, comprises a gas turbine engine 1 driving a propeller in a duct 2, and has control surfaces 9 arranged in the propeller slipstream and hooks 8a arranged to engage a grid on a landing platform such as the deck of an aircraft carrier. The aircraft carries external stores 4, 5 and has feet 3a extended on engagement of the hooks 8a, the latter being released automatically when the feet 3a are supporting the aircraft. The control surfaces are each divided where they intersect and the two halves of each surface are differentially pivotable for roll control. The engine is arranged with its exhaust near the nose of the aircraft, and the exhaust and intake ducts are bifurcated, being relatively angularly displaced so that the intake 7 and exhausts 6 are not in line.
Patent GB-1490358-A (GB)
Title: Calcining reducible compounds
IPC: F27B7/33
Filed: 1974-12-09
Abstract: 1490358 Calcining uranium compounds WESTINGHOUSE ELECTRIC CORP 9 Dec 1974 [18 Dec 1973] 53095/74 Heading ClA [Also in Divisions F4 G3 and Hl] A method for the production of uranium dioxide powder of uniform quality having an average of less than 2À2 atoms of oxygen per atom of uranium from a reducible uranium compound by heating in a reducing atmosphere comprises introducing the uranium compound to be reduced at a substantially uniform rate into a calcining apparatus comprising a rotary kiln where said compound is heated to a temperature of up to 1000‹ C. and subjected to hydrogen and steam, passing the hot uranium dioxide formed in the rotary kiln to an elongated cooling chamber in gas-sealed connection with said kiln and to a discharge means arranged in said chamber for cooling and continued passage of the uranium dioxide thereby cooling the uranium dioxide by contact with surfaces during said continued passage to an outlet temperature of less than 100‹ C. whereby the elongated cooling chamber and discharge means remain constantly filled with uranium dioxide so that the outlet opening of the cooling chamber emptying into the outside atmosphere remains constantly blocked by cooled uranium dioxide powder so as to prevent the entrance of air into the apparatus.
Patent GB-1172687-A (GB)
Title: Mineral Separator.
Inventor: RUTHERFORD JOHN SAMUEL
IPC: B03B5/26
Filed: 1966-11-28
Abstract: 1,172,687. Concentrating minerals. J. S. RUTHERFORD and F. M. STODDART. 28 Nov., 1966, No. 53184/66. Heading B2H. A mineral separator comprises. an inclined trough 11 tapering towards its discharge end 12 to which a splitter 14 is clamped forming a gap 15 for the passage of a heavy mineral fraction. Slots 19 are provided in the side walls of the trough at its feed end 17 for the reception of a deflector 18 which extends part way into a dip 20 in the floor of the trough to form a -weir so that material fed to the trough is imparted a swirl and mixing effect by the deflector 18 and passes under it along the floor of the trough where classification takes place into a heavy mineral fraction which is discharged through the gap 15 and, tailings which flow over the gap along the divergent portion 16 of the splitter. The deflector 18 is provided with a projecting portion, the rearside of which is shown at 31 as a depression, extending upstream from the deflector plate and against which the feed material strikes and is deflected upwards in a swirling motion underneath a hook portion 30 of the deflector and then cascades down into the dip 20 and passes under the deflector. A number of troughs 11 may be mounted in series, the divergent portion 16 of the splitter clamped to a preceding tray being received in a notch 28 formed in the feed end of a succeeding trough whereby the tailings are directed against the deflector 18 of the succeeding trough and the heavy mineral fraction falls through the gap 15 into a collecting depression 27 formed in a mounting portion 21 at the feed end of the succeeding tray. The mounting portion includes a socket 22 and a spigot 24, the latter being adapted to be received in a socket of a supporting member or in the socket 22 of a similar trough placed underneath the present trough in a set of superimposed troughs connected in parallel. The separator may be moulded in metal or in plastics which may be reinforced with fibreglass.
Patent GB-1336036-A (GB)
Title: Magnetic laminations
IPC: H01F41/02
Filed: 1971-11-16
Abstract: 1336036 Magnetic laminations SIEMENS AG 16 Nov 1971 [1 Dec 1970] 53238/71 Heading B3A A method of making a plurality of laminations comprises punching pieces 1, Fig. 1, out of magnetic sheet material, each piece comprising parts 2, 3 which are joined together by narrow connecting portions 4, 5, and separating the parts to form separate laminations by relatively displacing the parts and breaking the connecting portions. The parts 2, 3 are generally L- shaped and between them exhibit recesses 7, 8 and at least one hole 6. When the parts are displaced towards each other a salient portion of part 2 enters hole 6 and parts 10, 11, Fig. 2, no longer contact each other. A sheet of insulating material (9) may be interposed between parts 2, 3 to give the required air gap between the two parts. The holes and recesses in the punched-out piece may be trapezoidal in shape, Figs. 3-5 (not shown), and a sheet of insulating material (24) may also be inserted between the parts. Magnetic core elements assembled from individual parts 2, 3 are generally riveted together after the application of cover-plates and insulating spacing material. The elements may also be joined together by casting resin. Further reinforcement is obtained by dipping the magnetic core elements, after they have been joined together, in casting resin.
Patent GB-1131107-A (GB)
Title: Improvements in and relating to seats and seat cover fixing means
Inventor: MARSH JOHN ALFRED
IPC: A47C31/02
Filed: 1965-12-17
Abstract: 1,131,107. Securing upholstery. BOSTROM MFG. CO. Ltd. 8 Dec., 1966 [17 Dec., 1965; 13 Jan., 1966], Nos. 53567/65 and 1157/66. Heading A4M. A cover 12 for a foamed cushion 11 has its edge folded over the depending rim 10 of a seat pan and secured by a resilient, channel section trim strip 14 having an inward projection 15 at one side which has a snap engagement with a lateral projection 13 on the rim. In a modification (Fig. 3) the trim strip (24) has inward projections (25) at each side to engage projections (23) on both sides of the rim 10. As shown, the projections 13 are pressed out from the rim 10. Alternatively (Fig. 4), the rim projection comprises a stepped portion (33) of the rim 10. The cover 12 may be bonded to the rim 10. Channel section spring clips may be fitted over the covered rim prior to fitting the trim strip. The clips may be moulded into the trim strip. Joins between adjacent trim strip sections may be concealed by fitting a channel section spring clip (17, Fig. 5) with a central depression (18) in one side to fit between adjacent ends of the strips.
Patent GB-1368125-A (GB)
Title: Apparatus for ensuring unidirectional rotational movement between  a rotor and a stator
IPC: H02K7/118
Filed: 1971-11-19
Abstract: 1368125 Dynamo-electric machines CROUZET SA 19 Nov 1971 [24 Nov 1970] 53725/71 Heading H2A In a device for ensuring unidirectional rotation of a single phase synchronous motor, comprising a cam 3 including a pawl 3b arranged to co-operate with teeth in the rotor 2 and having an aperture 3a through which passes the rotor shaft 1, a resilient member 5 ensures frictional engagement between the shaft and an edge of the aperture. The cam is pivoted about an axle 4 constituting a fixed axis, the axle being located in a groove 3c in the cam and the resilient member is a metal ring disposed around the axle and a pin 3d on the cam. On starting the motor, the cam is driven by the shaft to one extreme position or the other, depending on the direction of rotor rotation, as determined by the length of the aperture 3a.
Patent GB-1163603-A (GB)
Title: Method and Machine for Stacking Batches of Flat Objects such as Newspapers and the like
IPC: B65H29/46
Filed: 1966-12-01
Abstract: 1,163,603. Stacking machines. BONNIERFORETAGEN A.B. 1 Dec., 1966 [23 Dec., 1965], No. 53928/66. Heading B8C. A stacking machine, particularly for bundles of newspapers &c., has an inlet conveyer, and an outlet conveyer at a higher level with an elevator movable vertically between them to add each bundle to the base of a stack formed in a holder, the lower supporting surface of which is level with the outlet conveyer. The holder is rotatable to enable the thicker sides of the bundles to be arranged alternately. Bundles arrive on a belt 11 and are taken over by opposed pairs of driven rollers 16. Each abuts a stop 17 causing plates 54 (55) see also Figs. 11, 12 (not shown), on either side of the bundle to close in and centre it, followed by raising of the elevator. The elevator comprises a bar narrower than the space between the opposed rollers 16 and crosspieces (20), Fig. 7 (not shown), which fit between adjacent rollers. It passes through the rollers to carry the bundle to the holder 21. The latter comprises opposed frame members 74a, 75 arranged to pivot towards and away from each other on shafts 77, 77a. A row of stack supporting rollers 24, 24a is arranged along the base of each frame, the rollers also being pivotable to an upwardly directed position by a rising bundle if the frames are not spread widely enough. As a rising bundle approaches the folder, the frames move apart perrniting any bundles held by it to be deposited on the rising bundle. The stack is then raised above the rows of rollers, the frames move inwards and the elevator descends. The holder may now rotate 180 degrees about a vertical axis so that the next bundle added to the stack will be oppositely facing relative to that immediately above. Plates 93, 93a, vertically slidable on rods 89a, 90a which do not swing out with the frames, rest on the stack and during rotation, steady it. Vertical guide rails 89, 90, independent of the frames, prevent the stack from becoming misaligned. Finelly a pusher 94 thrusts the completed stack off the rollers 24, 24a on to the discharge conveyer 12.
Patent GB-1393460-A (GB)
Title: Endless elastic belt aligning apparatus
IPC: G03D7/00
Filed: 1972-11-22
Abstract: 1393460 Tracking conveyer belts OCE-VAN DER GRITTEN NV 22 Nov 1972 [22 Nov 1971] 53962/72 Heading B8A [Also in Division F2] A guiding arrangement for a belt 1 which is driven by a roller 2 and passes around a guide roller 3, to centre the belt 1 on the roller 3, comprises flanges 13, one at each side of the roller 3 and which support the roller 3 through bearings 14, which flanges in turn carry guide tracks 12 which co-operate through balls 11 with inclined tracks 10, so that on movement of belt 1 off-centre the abutment of the belt against a flange 13 causes the roller 3 to move away at that side from the roller 2 (and towards it at the opposite side), to create tensions in the belt 1 to move it away from that flange 13. Each track 10 is mounted on an arm portion 9 which is movable in relation to an arm 8 (by adjustment of bolt 17), to vary the belt tension. The belt 1 may guide light printing copies over a perforate screen 5 to develop images thereon.
Patent GB-1524120-A (GB)
Title: Educational toy
IPC: G09B7/06
Filed: 1976-12-29
Abstract: 1524120 Educational toy HSING-CHING LIU and LAN-DIH LIU 29 Dec 1976 54232/76 Heading G5G One of a set of question and answer cards 2, Fig. 2, having notches 21a-21d, 21<SP>1</SP>a-21<SP>1</SP>d along both longitudinal sides is inserted in a case 1, one of a plurality of plates 3a-3d is rotated to select a question thereby pressing a rope 4 into the appropriate notch in the card to the extent allowed by the depth of the notch and thus move a chamber 54, Fig. 4, to the left, and an answer is then selected by rotating one of plates 3<SP>1</SP>a-3<SP>1</SP>d, Fig. 2, to press a second rope 4<SP>1</SP> into the appropriate notch in the card to move a second chamber 55, Fig. 4, to the right. If the selected answer is correct hole 57a, Fig. 2, in chamber 54 is aligned with a hole 58a in chamber 55; if a resilient air pump 8 is squeezed air will pass into chamber 55 then through holes 58a, 57a into one compartment 54a of the chamber 54 and thence into a column 51 to raise a balloon 52, Fig. 4. If the selected answer is incorrect holes 57a, 58a are not aligned but a hole 58b, Figs. 2, 4, in chamber 55 is aligned with one of a plurality of holes 57b in a second compartment 54b of the chamber 54 which is connected to a second column 51<SP>1</SP> containing a balloon 52<SP>1</SP>. In an alternative embodiment (Fig. 5, not shown) the rotatable plates 3a-3d, 3<SP>1</SP>a-3<SP>1</SP>d are replaced by horizontally slidable push rods and the chambers 54, 55 are replaced by insulating bars one of which carries two conducting points side-by-side and the other of which carries one conducting point and a conducting strip having a gap opposite this conducting point. When a correct answer is selected a circuit including one of the conducting points on the first insulating bar and the conducting point on the second insulating bar is completed to illuminate a first lamp, whereas if an incorrect answer is selected a circuit including the other conducting point on the first insulating bar and the conducting strip on the second insulating bar is completed to illuminate a second lamp.
Patent GB-1285276-A (GB)
Title: Moisture resistant packaging material
Inventor: HOPERMANN RICHARD KONRAD
IPC: D21H19/18
Filed: 1970-11-16
Abstract: 1285276 Coated sheet material BORDEN Inc 16 Nov 1970 54387/70 Heading B2E A moisture-resistant packaging material comprises a paper base having on at least one surface a layer of a primer coating composition comprising at least 50% of a resin of vinyl halide, vinylidene chloride, chlorinated rubber or a copolymer of vinyl halide with vinyl acetate, acrylonitrile, ethylene and/or propylene and a top lacquer coating composition applied over the vinyl composition comprising at least 70% of a cyclized natural rubber. The primer may be applied as a solution in a ketone such as methylethyl ketone, tetrahydrafuran, or dimethyl formamide. Ultraviolet stabilizers may be added to the primer composition such as epoxidized soy bean oils, oil-midefied sebacic acid, barium maleate. Up to about 15% of wax may be present in the coating such as montan wax, ceresin wax, paraffin wax and blends of paraffin wax with microcrystalline wax.
Patent GB-1479340-A (GB)
Title: Steam cycle thermal power plant
IPC: G21D5/08
Filed: 1974-12-19
Abstract: 1479340 Steam turbine power-plant FIVES-CAIL BABCOCK 19 Dec 1974 [20 Dec 1973] 54924/74 Heading F1Q and FIT In a steam power-plant, e.g. steam turbine, the steam from a steam generator 2 supplied with heating fluid from a nuclear reactor 1 is superheated at 16 and re-superheated at 17 by heat exchange with live steam mechanically compressed at 15. As shown, live steam is fed directly to a high-pressure turbine 5, to a compressor 15, and to a live steam interstage heater 9. The compressor output is fed to super-heaters 16, 17 either in series or in parallel, the exhausts from the heaters being fed to feed-water heaters 13, 14.
Patent GB-1497076-A (GB)
Title: Methods of forming cutting tool packages and packages formed thereby
IPC: B65D75/20
Filed: 1974-12-20
Abstract: 1497076 Locating razor blades in wrappers FR HESSER MASCHINENFABRIK AG 20 Dec 1974 [24 Dec 1973] 55117/74 Heading B8C A cutting tool, for example a razor blade 2, is located within a wrapper 1 by at least one seal 15 which connects opposed faces of the wrapper adjacent centring edges 9, 10 or edges 11, 12 of the opening 14 of the tool. The wrapper may comprise a heat sealable material or be coated on one side, in at least some regions, with an adhesive. The wrapper may be folded into three panels 5, 6, 7 or into two panels with a non-cutting edge of the blade adjacent the fold line (Fig. 4, not shown). The edges 16 of the wrapper may also be sealed together at 17. The wrapper is opened by ripping the seals. There may be three disc shaped seals, or one longitudinal, locating seal through the opening 14 of the blade.