baber/WOPTO huggingface dataset:
Patent GB-862211-A (GB)
Title: Improvements in or relating to secondary emissive electrodes
IPC: H01J43/10
Filed: 1957-05-17
Abstract: 862,211. Coating by vapour deposition. WESTINGHOUSE ELECTRIC CORPORATION. May 17, 1957 [May 23, 1956], No. 15739/57. Class 82(2) [Also in Groups XXXVI and XL(a)] An electron transmissive type secondary emission dynode for use in a multistage electron multiplier comprises a continuous self-supporting film 32 consisting of a coherent metal oxide or oxides preferably selected from the group of aluminium oxide, magnesium oxide and tantalum oxide. The film can have a thickness of 200 to 500 Angstroms, and be supported by a frame member 34, Fig. 2, of nickel, glass or stainless steel. The film can have a thin electron scattering layer 44 of an evaporated material having an atomic number greater than 25, such as gold, and of a thickness of 20 or 100 Angstroms. The dynode can also have an evaporated continuous secondary electron emissive layer 46 of insulating material such as KCl, NaCl, MgF 2  or MgO, disposed on the film 32, Fig. 3, or on the scattering layer 44, Fig. 4. The layer 46 can be 200 to 500 Angstroms thick. A thin conductive film 48, e.g. of chromium, beryllium or stannic oxide of the order of 100 Angstroms thick, can be evaporated on to the film 32, Fig. 6, or on to the scattering layer 44, Fig. 5. The film 48 can be incoporated in the constructions shown in Figs. 3 and 4, and can be formed as a black deposit by evaporation through an inert gas. The self-supporting oxide film 32 can be made by anodizing a thin metallic foil, a specific example relating to aluminium being described.
Patent GB-642700-A (GB)
Title: Improvements in or relating to trackways for wheeled vehicles
Inventor: HAGLEY RICHARD ERNEST
IPC: E01B25/28
Filed: 1948-06-15
Abstract: 642,700. Rail - guided traction systems. BROCKHOUSE & CO., Ltd., J. June 15, 1948, No. 16053. [Class 104 (ii)] Rail joints.-In a trackway of the kind provided with a central guide rail arranged to be engaged, on each of its lateral sides, by guide means on a vehicle which has road-wheels running directly upon the track at each side of the guide rail, a longitudinal groove 16 is provided in the underside of each guide rail 13 and the abutting ends of a pair of such rails are joined by providing at the extremity of one of them a support 17a with a vertical web 18 which engages in the grooves 16 of both rails, and providing near the extremity of the adjacent rail a support 17b with a web 18 extending only into the groove 16 of that rail, the support also having a pair of longitudinallyextending fish-plates 24 which are welded on opposite sides of the web and receive between them the web of the adjacent rail end. The webs 18 of the supports 17a, 17b are welded to their respective rails along the edges of the grooves 16. The longitudinal dimensions of the rail supports and their spacing along the guide rails may be as described in Specification 642,699 to provide beneath the rails a space to allow the passage of drifting snow &c. The flanges 20 of the supports are secured to the track 10 (not shown) by spikes or other means.
Patent GB-1432334-A (GB)
Title: Cooling fan operating circuits for road vehicles
IPC: F01P5/04
Filed: 1972-04-07
Abstract: 1432334 Automatic control of temperature LUCAS (ELECTRICAL) CO Ltd 27 March 1973 [7 April 1972] 16056/72 Heading G3R [Also in Division H3] A cooling fan operating circuit for a motor vehicle, of the kind including a vibrating contact voltage regulator controlling the supply of current from a vehicle battery to a series circuit including a temperature gauge and a resistance sensitive to engine water temperature, comprises switching means for maintaining the cooling fan ON when the water temperature exceeds a predetermined value irrespective of the opening and closing of the vibratory contact switch of the regulator. As shown, temperature sensor 19 and temperature gauge 18 form one branch of a Wheatstone bridge while R25 R26 form the other branch. A long-tailed pair of transistors 22, 24 detect bridge unbalance. Provided the water temperature is below the predetermined value, the transistor 22 will conduct when vibratory contact switch 15 is closed. Hence T24 will be off so that T28, T32 will also be off and a relay winding 38 de-energized. Thus relay switch 41 will be open and the fan de-energized. When the predetermined temperature is reached T22 turns OFF and T24 will turn ON provided 15 is closed. T24 passes base current to T28 which turns ON, passing base current to T32 which also turns ON. Thus Relay 38, 41 switches ON the fan motor 42. At the same time a capacitor 37 discharges. When 15 opens, the base circuit of T24 is broken causing T24 to turn OFF. The transistor T24 will therefore cease to pass base current to T28. However charging current of C37 will hold T28 conductive and in addition T32 will provide regenerative feedback current to the base of T28. T28, T32 will therefore be held ON and Relay 38 and the fan 42 will remain energized. T22 will not conduct again until a lower predetermined temperature is reached, a resistor 43 providing the required temperature differential.
Patent GB-228067-A (GB)
Title: Improvements in or relating to machines for pulverising or disintegrating ore, rock, metal or other materials
IPC: B02C13/286
Filed: 1924-07-04
Abstract: 228,067. Gannow Engineering Co., Ltd., and Mercer, T. July 4, 1924. Continuous-discharge apparatus with stationary containers.- A mixer into which the crushed material from a pulverizer is delivered by a tube 34 consists of a chamber 25 containing a rotating vertical shaft 26 carrying discs or beaters 27 with extensible edges or rings 28. The outlet 25b of the chamber is connected to a pneumatic conveyer 15. Specifications 2759/14, [Class 59, Grinding, crushing, &c.], and 182,577, [Class 117, Sifting &c.], are referred to.
Patent GB-846575-A (GB)
Title: Improvements in or relating to the purification and vinylation of pyrrolidone-2
Inventor: JONES WILLIAM OWEN
IPC: C07D201/16
Filed: 1957-05-21
Abstract: Crude 2-pyrrolidone prepared by reacting butyrolactone with ammonia under pressure is purified by treating the pyrrolidone with an amount of alkali metal or its oxide or hydroxide sufficient to react with impurities present but not such as to combine with a substantial amount of the pyrrolidone and subsequently distilling off all of the pyrrolidone after removing any water produced.  The amount of alkali used may amount to 1-3% (expressed as metal) based as the pyrrolidone.  The pyrrolidone treated may be either the crude reaction product from which a substantial amount of water of reaction has been removed or the distilled product.  The purified pyrrolidone may be N-vinylated by further treating the purified pyrrolidone with an amount of from 0,5 to 2% by weight (based on the metal) of an alkali metal or its oxide, hydroxide or alkoxide, where necessary distilling a portion of the pyrrolidone to remove water or alcohol produced in the salt formation and treating the residue with acetylene at elevated temperature and pressure until 80-100% of the pyrrolidone has reacted; the vinylation method described in Specification 799,924 may be used.  The purification is stated to prevent formation of polypyrrolidone in the vinylation reaction. Examples describe the purification of a crude pyrrolidone, obtained as above, by adding caustic soda thereto and then distilling to remove an aqueous fore-run and then purified pyrrolidone which is treated with sodium or potassium metal to form a pyrrolidone solution of pyrrolidinosodium or potassium catalyst and then reacted with acetylene at 130-135 DEG  C. under 8-10 atmosphere pressure to give N-vinyl pyrrolidone.  The Provisional Specification refers broadly to the purification of 2-pyrrolidone by treatment with an alkali metal, its oxide or hydroxide and subsequently distilling of the lactam. Specification 757,406 also is referred to.
Patent GB-1387583-A (GB)
Title: Composite structures
IPC: B32B27/00
Filed: 1971-05-21
Abstract: 1387583 Polyester-epichlorohydrin rubber laminates DUNLOP Ltd 12 May 1972 [21 May 1971] 16181/71 Heading B5N A composite structure comprises a polyester component non-bonded without an adhesiveinterlayer to an epichlorohydrin rubber component. At least the surface of the polyester may be fused and solidified in contact with the rubber. The rubber may be vulcanized before or during contact with the polyester. The components may be bonded by injection or transfer moulding the polyester on to the rubber or by heating the assembly under pressure, e.g. in a compression mould, pressure preferably being maintained whilst the polyester solidifies. The polyester may be a homopolymer, e.g. polytetramethylene or polyethylene terephthalate, or a block copolymer or n amorphous blocks of polyether, aliphatic acid polyester, olefin polymer, or interlinked sub-blocks of these, with (n + 1) crystalline polyester blocks, such copolymers being described in detail. The rubber may be epichlorohydrin homopolymer or epichlorohydrin-ethylene oxide copolymer. Conventional additives may be present.
Patent GB-318309-A (GB)
Title: Improvements in or relating to skiving machines
IPC: C14B1/00
Filed: 1928-06-05
Abstract: 318,309. British United Shoe Machinery Co., Ltd., Woodcock, R. B., and Kestell, T. A. June 5, 1928. Stationary-cutter machines. - A skiving machine employing a circular dished rotary knife, and of the kind described generally in Specification 24178/07 is provided with means for removing the edge-guide in order to obtain access to the feed-roll and knife-sharpening mechanism, and for restoring the edge-guide without effecting its adjustment. The feed-roll 14 and its adjusting mechanism 15 are mounted on a bracket 16 having a tongue-and-groove connection with the machine frame and being clamped thereto by a screw 18 in a position determined by the adjustment of a stop 19. The edge-guide 21 is pivoted on a knife-edge 22 at the end of the bar 23 which may be adjusted by a nut 30, a spring 31 being provided to prevent lost-motion. Lateral movement of the edge-guide is prevented by a plate 26 which projects into a gap in the knife edge. The angular position of the guide may be indicated by a member 27 to which the guide may be clamped in adjusted position by a screw 28. The edge-guide mechanism is carried by a bracket 29 hinged at 34 to the frame of the machine and adapted to be secured thereto, when working, by a locking member 35. The knife-sharpening mechanism may be thrown out of gear by a clutch 9. The knife 1, Fig. 3, is secured to the spindle 2 by a ball-seated screw 4 and may be removed from the spindle by a tool 7, Fig. 4, comprising pivoted members adapted to grip the undercut head 6 of the knife. Specification 23850/11 also is referred to.
Patent GB-200329-A (GB)
Title: Improvements relating to stuffing boxes for centrifugal pumps
IPC: F04D29/10
Filed: 1922-06-13
Abstract: 200,329. Hayhurst, W. June 13, 1922. Leakage-preventing devices. - The gland a of the stuffing-box b of a vertical centrifugal pump is wholly immersed in a liquid seal c contained in a pan d, which is clamped to the box by bolts and arched bars g. A packing ring f is inserted between the pan and the top of the stuffing-box. The gland is adjusted by means of an annular plate j. formed in halves and acted on by screws i threaded through the bars g.
Patent GB-832953-A (GB)
Title: Portable power operated tire removing tool
IPC: B60C25/02
Filed: 1958-05-21
Abstract: 832,953. Tyre removers. MARSHALL, D. J. May 21, 1958, No. 16369/58. Class 144 (1). A portable bead-cracking and tyre-removing tool, for use on wheel rims 15 having a detachable, side flange, comprises a body 20 adjustably housing a bar 26 at one end 24 and pivotally supporting at its other end 34 a fluid-pressure cylinder 40 the piston-rod 42 of which carries a wedge-tipped bead-pushing chisel 44, the bar 26 having a hook 27 at its end to hook around the edge 17 of the rim from which the side flange has been removed so that, on admission of pressure fluid into the cylinder 40, the chisel 44 wedges between the fixed rim flange 16 and the adjacent tyre bead 11, thereby automatically locking the tool to the rim and pushing the bead 11 away from the flange 16 and on continued projection of the chisel 44 the chisel edge 45 engages the rim base and pushes the bead 11 therealong to abut the other bead 13 and subsequently push both beads off the rim. On release of the fluid pressure a spring 43 within the cylinder 40 effects retraction of the chisel and automatically releases the tool from the rim. As shown, the body 20 is of I-section and the bar 26 is notched and adjustably locked in a tubular end portion 24 of the body by a transverse notch-engaging rotary latch 29. The cylinder 40 is supported by a head bracket 35 through which the pistonrod 42 extends and which is pivotally mounted on a pin 36 in a yoke 34 at the other end of the body 20. The cylinder 40 has a handle 48 and a fluid control valve 49 at its end opposite the bracket 35.
Patent GB-758651-A (GB)
Title: Hollow filament yarn formed in the viscose process
IPC: D01D5/247
Filed: 1953-06-15
Abstract: In the spinning of filaments by the viscose process in which the viscose has such a cellulose and sodium hydroxide content and the composition of the acid spin bath is such with respect to that of the viscose that only the exterior of the filaments initally coagulate and regenerate to form a tough exterior skin of cellulose while uncoagulated viscose remains in the centre of the filaments, the viscose containing 9-13 per cent of cellulose, 8-13 per cent of sodium hydroxide and about 5 per cent of sodium carbonate is spun into a normal Muller-type spin bath (preferably containing 12.5-14.5 per cent H2SO4, 22.5-33 Na2SO4 and 1.25-1.50 ZnSO4), the filaments are stretched at least 50 per cent while in the spin bath, washed with water and subjected to additional stretching while in hot water. Carbon dioxide formed by the action of the spin bath on the sodium carbonate present in the viscose is trapped in the uncoagulated core of the filaments with the formation of hollow sections comprising at least 95 per cent of the length of the filaments. In the example, viscose containing 10 per cent cellulose, 10 per cent sodium hydroxide and 5 per cent sodium carbonate is spun at a viscosity of 35 seconds and a salt index of 5.2 into a normal Muller type spin bath comprising 145 g./litre H2SO4, 320 g./litre Na2SO4 and 12.5 g./litre ZnSO4 at 50 DEG  C.  The length of the filament path in the spin bath is about 100 inches, the filaments being stretched about 60 per cent under a tension of about 0.7 g./denier.  On removal from the spin bath the filaments are stretched an additional 20 per cent in a water bath at 60 DEG  C.  Specification 596,772 and U.S.A. Specifications 2,015,201, 2,287,839, 2,315,560, 2,340,377, 2,347,883, 2,347,884, 2,364,273, 2,491,937, 2,491,938 and 2,517,694 are referred to.
Patent GB-470666-A (GB)
Title: Improvements in spectacles
IPC: G02C1/02
Filed: 1936-06-12
Abstract: 470,666. Spectacles. ARCHER, T. W. June 12, 1936, No. 16441. [Class 97 (i)] Rimless spectacles or spectacles having a thin metal or shell rim, are provided with a bridge which will act as a shock absorber to the lenses, or will break more readily than the lenses, the bridge being directly connected to the lenses without the interposition of any metal parts. As shown, the bridge 1 is made of imitation shell formed at each end with lugs 2 which pass across the front and rear faces of the lenses, the lugs and lenses being apertured to receive fastening pins 5. Preferably the pins are made of the same material as the bridge, and are dipped in a solvent such as acetone before insertion, so that they become welded to the lugs.
Patent GB-542794-A (GB)
Title: Improvements in or relating to moulded articles from sawdust and other preparations and method of manufacture thereof
IPC: C08L93/04
Filed: 1940-11-19
Abstract: 542,794. Plastic compositions. BADER, A. Nov. 19, 1940, No. 16671. [Class 70] A moulded article is made by mixing sawdust, starch and colophony with water to form a plastic mass and submitting to pressure and a temperature of about 180‹ C. The pressure may be periodically released to allow escape of steam, or the mixture may be passed between hot rollers. Colouring agents may be added and the products covered with decorative paper, or painted.
Patent GB-350707-A (GB)
Title: Machine for the manufacture of reinforced concrete hollow pillars, high pressure tubes and the like
IPC: B28B21/52
Filed: 1930-05-30
Abstract: 350,707. Moulding concrete pipes &c. BARR, J. F., Killineer House, Drogheda, Co. Louth, Ireland. May 30, 1930, No. 16749. Convention date, Oct. 9, 1929. [Class 87 (ii).] Reinforced concrete pipes &c. are made by charging the material into the space between a mould 2 and a core 3 and tamping the material by an annular stamp 1 built up of sectors which are independently and resiliently mounted by rods 6 and springs 8, in a common driving ring 5. The ring 5 and the sectors of the stamp are provided with holes to permit the passage of the reinforcing rods.
Patent GB-544824-A (GB)
Title: Improvements in or relating to pressure fluid control valves
IPC: F16K31/363
Filed: 1940-11-25
Abstract: 544,824. Valves. COCKBURNS, Ltd., RODGER, J., and GRANT, T. Nov. 25, 1940, No. 16861. [Class 135] In a pressure fluid control valve in which the valve stem 15 carries a piston 18 movable in a cylinder 19, the latter is removably accommodated with external circumferential clearance in a cylindrical bore 20 within the valve chest 10 and at its inner end has a boss 21 for guiding the valve stem. The cylinder is prevented from rotating by a pin 24 and is held between an annular abutment 22 on the chest 10 and a cover 13. The chamber 27 above the piston 18 is connected to the inlet 11 through passage 26 and valve 28. The other side 30 ot the piston 18 is connected to exhaust through a passage 29 provided with a valve (not shown). When a nut 31 having a handle 32 is turned in the direction to permit opening of the valve 16, a collar 37 on the nut 31 engages a bell-crank lever 33, 34, and opens the valve 28. Pressure fluid leaks into the chamber 30. When it is desired to shut the valve 16 rapidly the valve in the passage 29 is opened to exhaust the pressure in the chamber 30. Specifications 19084/14, 2524/15 and 105,695, [all in Class 135], are referred to.
Patent GB-1510319-A (GB)
Title: Compactor device
IPC: A01K1/01
Filed: 1975-04-23
Abstract: 1510319 Reciprocating conveyers J PEIS 23 April 1975 [23 April 1974] 16907/75 Heading B8A A compactor device for refuse material, such as wet dung, comprises a chamber 6 with an inlet opening 10, an outlet tube 14, a funnelshaped transition tube 12 and a piston 22 formed by a plate 28 with side walls 24, 26 shaped as circular segments. The piston 22 is arranged to swing about a shaft 20 and is reciprocated by a double-acting hydraulic cylinder 42. As shown the cylinder 42 also operates a reciprocating conveyer 60, 62 through a lever 56 to feed the material 66 along a groove 58 in a stable, by pivoted scrapers 62, to the chamber 6. A swing plate 50 in the tube 12 serves as a check valve to prevent the material from running back from the tube 14. Fig. 4 (not shown) illustrate an embodiment of the compactor device used for receiving refuse from a refuse shaft of a dwelling house.
Patent GB-1459024-A (GB)
Title: Aircraft flight control system
IPC: G05D1/00
Filed: 1974-04-18
Abstract: 1459024 Automatic control of aircraft SPERRY RAND CORP 18 April 1974 [11 June 1973] 16936/74 Heading G3R An aircraft flight control system (e.g. controlling roll) comprises at least two identical channels operable in either manual or automatic mode, the pilots' commands being provided by respective force sensors 11a, 11b on a control wheel 10 and there being "synchronizer means" 16a, 16b which during the auto mode, cancel (back off) any signals from the force sensors until a threshold is reached in both channels, whereupon gating means switches the system to manual operation. Switches are drawn in the auto position, in which flight control signals from an unspecified source are applied through Sla (for channel A) to an integrator 12a whose output is combined with attitude, attitude rate and actuator position feedback signals to provide a control surface actuator command signal. Control wheel force sensor signals are blocked at S2a but are also backed off by the feedback path S3a, 16a, 18a. Thus the signal at the input of a lead/lag circuit 19a is held at zero. However, force sensor output in excess of a threshold, due to deliberate movement of wheel 10, is detected at 21a which provides a signal to AND gates 24a, 24b whose other inputs are from channel B. When both inputs are present these AND gates cause the switches Sl, S2 and S3 in each channel to change over to manual. Thus S3a opens and so permits the input to lead/lag 19a to rise to the output of the sensor, and so adjust the actuator. The "lead" part of 19a ensures rapid response while the "lag" (e.g. 0À3 to 0À7 secs.) blocks minor pilot induced oscillations. A "manoeuver limit" (e.g. 30 degree roll) is provided by comparing the output of integrator 12a with the sensor signal at 26a: if the difference is excessive in either channel an inhibiter 22a, 22b blocks the signal to the AND gates and causes reversion to automatic control, which maintains the manoeuver at the limit condition until positively cancelled by movement of the pilot's wheel in the opposite direction (i.e. not merely to centre). Either channel may be disengaged by a signal in its OR gate 23A, 23B and by changeover of switch S4a, S4B
Patent GB-441751-A (GB)
Title: Improvements in and relating to choke coils
IPC: H01F29/10
Filed: 1935-06-12
Abstract: 441,751. Inductances. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. June 12, 1935, No. 16951. Convention date, June 12, 1934. [Class 37] A variable-choke coil has an oval section core 1 rotatable on an axis perpendicular to the field of the windings 3, the windings overhanging the airgaps on all sides to an extent preventing stray fields. The core parts 4 car be shifted laterally along the dotted lines 6 and the wind ings 3 may be tapped. The adjustment of the parts 4 permits the current absorbed to be varied without changing the winding connections.
Patent GB-905205-A (GB)
Title: Improvements in or relating to a roll holder for dispensing paper
IPC: B65H35/00
Filed: 1960-05-13
Abstract: 905,205. Roll holders. PAPIERFABRIK SUNDERN G.m.b.H. May 13, 1960 [Sept. 10, 1959; Jan. 16, 1960], No. 16952/60. Class 18. A paper roll holder comprises a rear portion 1 adapted to be secured to a wall, side portions 2, a bottom portion 5 for the roll 6 and a front serrated tearing edge 3, internal ledges 4 being provided for guiding and holding the roll 6 by means of at least one holding element 12 inserted in an internal cylindrical opening 11 of the roll, the arrangement being such that paper from the roll 6 passes through a slit 14 in the portion 5 before engaging the edge 3. In one embodiment, Figs. 1 and 2, the holding element comprises a round rod 12. The holder is attached to smooth walls by synthetic plastic suckers 10 having heads 13 which extend through key-hole shaped openings 7. The holder is attached to wooden or plaster walls by inserting screws through circular openings 8. In an alternative embodiment, Fig. 6, the roll 21 is rotatably mounted on cylindrical pins 25 having disc-like shoulders 26 inserted in guide parts 27 on the lateral brackets 23. The roll may be replaced by upward movement thereof together with the pins 25 which are then inserted in a new roll.