baber/WOPTO huggingface dataset:
Patent GB-1134926-A (GB)
Title: Delustered polyamides
IPC: C08G85/00
Filed: 1966-11-04
Abstract: 1,134,926. Delustered polyamides. E. I. DU PONT DE NEMOURS & CO. 4 Nov., 1966 [5 Nov., 1965], No. 49495/66. Heading C3R. In the preparation of molten synthetic polyamides from an aqueous solution of polyamideforming reactants an aqueous slurry of a delustering agent of particle size not above 5 microns, which slurry contains 1À5 to 12 millimoles/Kg. of an amine, is added to the reactants before completion of the polymerization. The slurry may be adjusted to a pH about 9À5 with an alkali, e.g. NH 4 OH, when the delusterant is TiO 2 . Specified amines are ethylamine, C 2-14  alkylene diamines, xylyene diamines, and bis-p-aminocyclohexyl methane. In Examples, TiO 2  slurry containing hexamethylene diamine is incorporated in 6,6/6,10 copolymer light stabilized with manganous hypophosphite. The invention is also said to be especially applicable to polyhexamethylene isophthalamide.
Patent GB-1018288-A (GB)
Title: Artificial blood vessels and method of preparing the same
IPC: A61F2/06
Filed: 1963-12-16
Abstract: An artificial blood vessel comprises an outer tubular layer of a porous fabric resistant to resorption by body fluids and an inner tubular layer of collagen, the collagen tube being at least partially tanned and containing an anticoagulant.  The collagen tube may contain, as anticoagulant, a mucopolysaccharide (e.g. chondroitin sulphate, hyaluronic acid, heparin, and heparin sulphate), as antibiotic, chlorotetracycline, neomycin and bacitracin, and glycerin.  The fabric may be polytetrafluoroethylene or polyethylene glycol terephthalate.  The blood vessel may be prepared by extruding a homogeneous gel comprising collagen and aqueous alkaline medium into a tube, drying or partially drying the collagen tube by passing air therethrough, covering the collagen tube with a porous fabric tube, contacting the inner wall of the collagen tube with tanning solution, washing to remove the residual tanning agent, contacting the inner wall of the collagen tube with anticoagulant solution, washing the inner wall and drying.  The homogeneous gel may comprise an anticoagulant, an antibiotic and glycerin.  A coating of collagen may be applied to the collagen tube before applying the fabric tube thereto.  The tanning agents specified include extracts of Chinese gallnuts, oak, pine quebracho, sumach, mimosa and valonia, and Depremol, Bilton, Svitan TK, Kortan A30, degras, elain, chlorolignin, clay mixture and 2, 4, 6-trimethoxytriazine.
Patent GB-1322829-A (GB)
Title: Automatic screw fastening machine
IPC: B23P19/00
Filed: 1971-10-26
Abstract: 1322829 Automatic screw fastening machines P H DIXON 26 Oct 1971 [9 Dec 1970] 49574/71 Heading B3N An automatic screw fastening machine has a support 36, a screwdriver 30 rotatably mounted in a carrier 33, a hopper 51 from which screws are fed to a slide 53 and from thence by a transfer mechanism 93 to a delivery station where a screw is gripped by a chuck 94. The transfer mechanism consists of jaws 96 which are caused to grip a screw prior to moving it beneath chuck 94 and release the screw prior to a return movement. Chuck 94 comprises fingers 150 mounted in a sleeve 151 which is itself mounted in a sleeve 156. The fingers are biased apart and are caused to close by a spring 159 forcing the chuck downwardly so that portion 161 of the chuck cooperates with portion 163 of sleeve 156. The chuck is maintained in a raised position by latch 164 which is triggered to release the chuck by the transfer mechanism during a delivery movement. Actuator 35 controls upward and downward movement of screwdriver 30, and actuator 116 controls movement of the transfer mechanism. Valve means ensures that the timing of the various movements is correct although each movement can be individually adjusted. An arm 146 having a follower 147 is connected to the transfer mechanism and is adapted to co-operate with a cam 149 which is part of carrier 33. This co-operation prevents the jaws 96 reaching a delivery position before the chuck has been moved upward a sufficient amount. A feed drum 59 deposits screws on slide 53. The drum is turned during downward movement of carrier 33 via teeth 70, gear-wheel 74 and drive belts 75 and 89. A clearing wheel 64 is similarly driven but during upward movement of the carrier via belt 90. In an alternative embodiment, Fig. 18 (not shown) the drum and clearing wheel are driven from arm 146 which is connected to the transfer mechanism. Figs. 20, 21 show a further embodiment where support 36 is universally adjustable in a horizontal plane to be positionable above each hole 27a. Positioning is achieved by a pin 214 on a finger 204 engaging in recesses 211 in a template 206 which correspond to the positions of holes 27a. The pin 214 is directly below screwdriver 30.
Patent GB-1220397-A (GB)
Title: Sliding door sill.
IPC: E06B3/46
Filed: 1968-10-21
Abstract: 1,220,397. Sliding door sill. CLIVE INVESTMENTS PTY Ltd. 21 Oct., 1968 [2 Nov., 1967], No. 49892/68. Heading E1J. A sliding door sill comprises a base plate 3, a cover plate 9 upon the plate 3 and spaced therefrom by ribs 11 on the cover, or may be on the base plate, or on both plates, at least two door rails 13 secured to or integral with the coverplate and drain holes 16, 17, 18 in the cover plate between the rails or between the rails and flanges 4 or 5 and drainage ways formed by lights in the ribs 11, staggered with respect to each other along the width of the door, the plates being fastened together by snap fitting interengageable formations 8, 12 on the respective plates.
Patent GB-1194730-A (GB)
Title: Improvements in or relating to Etching Processes for Semiconductor Devices
IPC: C23F1/10
Filed: 1967-11-03
Abstract: 1,194,730. Etching. INTERNATIONAL BUSINESS MACHINES CORP. 3 Nov., 1967 [28 Dec., 1966], No. 50053/67. Heading B6J. [Also in Divisions C7 and H1] An oxide coated surface of a semi-conductor is etched with a solution comprising monobasic ammonium phosphate and ammonium fluoride. A preferred etchant comprises an aqueous solution of 2-10% by weight of monobasic ammonium phosphate and 10-35% by weight of ammonium fluoride. The etchant is stated to be suitable for the removal of oxides from the surfaces of silicon and germanium semiconductor devices. In an example, Figs. 1A- 1E, silicon dioxide film 2 on silicon substrate 1 is selectively etched through a photoresist mask with buffered hydrofluoric acid to form apertures 3. Phosphorus pentoxide is diffused through the apertures to establish source and drain diffusion regions 4 and 5 simultaneously forming phosphosilicate glass film overcoat 6, Fig. 1B, which is selectively etched through a photoresist mask 8 with buffered hydrofluoric acid to form contact holes 3<SP>1</SP>, Fig. 1C. The assembly is then subjected to acid cleaning, e.g. with sulphuric acid and base width tailoring by heating resulting in the re-growth of silicon dioxide film 7, Fig. 1D. This film is etched away with a solution of ammonium fluoride and monobasic ammonium phosphate having a pH value 6-6.8. To complete the transistor a film 9 of aluminium is vapour deposited, Fig. 1E.
Patent GB-1171629-A (GB)
Title: Improvements in or relating to apparatus and plant for the aeration and circulation of liquids, particularly sewage
Inventor: KAELIN JOSEPH RICHARD
IPC: B01F3/04
Filed: 1966-11-09
Abstract: 1,171,629. Aerating apparatus. J. R. KAELIN. 9 Nov., 1966 [11 Nov., 1965], No. 50172/66. Heading B1C. Apparatus for aerating sewage comprises a rotor 6 mounted on a vertical axis and arranged to draw the liquid in at the bottom of the rotor and discharge it laterally, approximately at the surface of the liquid. The rotor passages are defined by inner walls 40, 38 and an outer wall 39. The outer wall converges initially from its inlet edge at the bottom and then diverges. It may be a surface of revolution whose generator is an arc of an ellipse. Air is drawn into the rotor with the help of an enlargement of the liquid passages at 52, through openings 49 and passages 46, 45. Further aeration is provided by the surface turbulence caused by the rotor. To increase this turbulence the edges of the rotor paddles are serrated, and the paddles are also curved in plan to give different degrees of turbulence in the two directions of rotation. Various alternative rotor constructions are described (Figs. 8-15 not shown). An additional rotor may be attached to the lower end of the rotor to increase the liquid flow rate. To facilitate the circulation of liquid in the tank a cone on the axis of the rotor at the base of the tank directs the flow towards the rotor inlet. The cone (Fig. 16 not shown) carries helical blades (68) which convert rotation motion of the liquid in the tank into an upward flow towards the rotor. The height of the rotor may be adjustable, and the rotor is light enough to float, to facilitate assembly. Reference has been directed by the Comptroller to Specification 1,080,651.
Patent GB-1451894-A (GB)
Title: Bogey-like toys
IPC: B62B3/00
Filed: 1972-11-01
Abstract: 1451894 Trollies D ELLIS 26 Nov 1973 [1 Nov 1972] 50232/72 Heading B7B Toy trollies comprise a first unit 5 articulated to a second unit 6, the unit 5 having a flat platform 7 capable of supporting a child and mounted on a steerable front wheel assembly 12 and fixed rear wheel assembly 13, with a partcircular recess 11 at the rear ene of the platform 7 to receive a circular portion 9 extending forwardly of the platform of the second unit 6 which is supported by a further wheel assembly at its rear end. The two platforms are identical with a relatively wide rear portion joined to the circular portion 9 by a relatively narrow portion 8 and, when in use on horizontal ground, the two platforms lie in the same horizontal plane and articulate relative to one another about a vertical axis located centrally of the circular portion of the second unit 6. Each wheel assembly includes an axle having an aperture at its mid-length which receives a bolt forming the axis of articulation, in the case of assembly 13, and receives a bolt forming a pivotal axis for steering by use of a cord 14, in the case of assembly 12. Spaced equidistantly on either side of the mid-length apertures are side apertures by which the axles of the rear wheel assemblies are bolted to their respective platforms. The wheels are preferably such that the platforms are located not more than 6 inches above the ground.
Patent GB-1110948-A (GB)
Title: Improvements relating to electronic trigger circuits
Inventor: SCOLES GRAHAM JOHN
IPC: H03K17/723
Filed: 1963-12-20
Abstract: 1,110,948. Valve and transistor trigger circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 21 Dec., 1964 [20 Dec., 1963], No. 50380/63. Headings H3P and H3T. [Also in Division H2] A trigger circuit comprises a pair of crosscoupled valves or transistors Tr1 Tr2 having a charging circuit R 2 , C connected between the output of Tr 2  and the input of Tr 1  and a transformer I having primary windings each in series with each valve or transistor. Fig. 4 shows a circuit for triggering a thyratron or SCR at a time after opening the switching device S determined by the setting of a biasadjusting potentiometer connected to the base of Tr 2 . Initially the electronic or other switching device S is closed so that Tr 1  is non-conductive and Tr 2  conductive. On opening S, capacitor C charges until Tr 1  becomes conductive when a rapid reversal of the conductive states of the two transistors occurs, resulting in a reversal of flux in the saturable transformer I and the initiation of a trigger pulse in winding Z. If the SCR is replaced by a thyratron (Fig. 2, not shown), the output pulse has a large amplitude initial portion, followed by flat-topped portion of smaller amplitude. In Fig. 1 (not shown), the transistors are replaced by valves and the transformer is omitted. Converting.-Six of the circuits shown may be driven from 3-phase mains and used to trigger six controlled rectifiers, the phasing of which is adjustable by a common potentiometer.
Patent GB-1211198-A (GB)
Title: Improvements in or relating to snap-action electric switches
Inventor: BEER DONALD COURTNEY
IPC: H01H13/46
Filed: 1966-11-10
Abstract: 1,211,198. Snap-action switches. OTE. HALL Ltd. 10 Nov., 1967 [10 Nov., 1966], No. 50499/66. Heading H1N. A retractive snap-action switch comprises a pivoted contact blade 7 engaged at pivot 17 near its free end by a rocker 15 loaded endwise at pivot 16 by-a spring blade 14 on a fixed pivot 18 and arranged below the pivot 12 of the blade 7, whereby the blade 7 acts at all times to restore the system to the upper (full line) position. Projections 19, 20 in the casing engage the rocker 15 in each of its operative positions and act to reduce contact bounce.
Patent GB-1182103-A (GB)
Title: Hydraulically-Jet-Propelled Craft
Inventor: RONSON GEORGE LANCASTER
IPC: B60V1/14
Filed: 1966-11-14
Abstract: 1,182,103. Water jet propulsion for ships and air cushion vehicles. DOWTY ROTOL Ltd 26 Oct., 1967 [14 Nov., 1966], No. 50993/66. Headings B7K and B7V. ' An air cushion vehicle 10 operated over water, hydrofoil or planing watercraft has hydraulic jet-propulsion apparatus 11 comprising a water intake duct 15 loading to a primary pump 13 which delivers water through a duct 16 to a main pump 17 which discharges through a propulsion nozzle 19 Duct 16 6 carries a valve 23 by which flow from pump 13 may be directed solely into a duct 24 leading to a further propulsion nozzle 25, both propulsion nozzles having provision for thrust vectoring or reversing. Pump 17 is smaller than pump 13 and is driven directly by shaft 20 from engine 12 whereas pump 13 is driven at a lower speed through gearing 22 and shaft 21, the relative speeds and diameters being such that the deliveries of the two pumps are substantially the same. For high speed propulsion, nozzle 19 is used but for low speed the flow from pump 13 is diverted by valve 23 to nozzle 25. To enable an air cushion vehicle to operate over land the water intake may be retracted and the vehicle propelled by other means such as propellers or gaseous jets.
Patent GB-1489022-A (GB)
Title: Desolventizing oilseed material
IPC: A23L11/30
Filed: 1975-12-23
Abstract: 1489022 Desolventizing oilseed material DRAVO CORP 23 Dec 1975 [27 Dec 1974] 52566/75 Heading A2Q An oilseed material is treated with an aqueous solvent comprising an organic solvent to produce an extract solution and spent material containing a residue of the solvent, the spent material being desolventized by direct contact with a stream of superheated vapour which is a mixture of the organic solvent and water having a concentration of organic solvent greater than the organic solvent concentration in the aqueous solvent in the residue. The oilseed material may be deoiled, undenatured "white" soybean flakes. The organic solvent may be methanol. ethanol or isopropanol.
Patent GB-1435519-A (GB)
Title: Process of producing flame-proof chipboard
IPC: C08L97/02
Filed: 1972-11-15
Abstract: 1435519 Flame-proof chipboard BORAX CONSOLIDATED Ltd 5 Nov 1973 [15 Nov 1972] 52677/72 Heading C3N A process for producing flame resistant chipboard consists of uniformly distributing a flame retardant material, which is a boron-containing compound, on the surface of wood chips having a moisture content of 0-10% by weight, e.g. 0-7%, then adding a resin binding agent to the mixture and then pressing and curing the resultant mixture to form the chipboard. The flame retardant may be boric acid, a sodium borate or a mixture of a sodium borate and boric acid. The sodium borate may be Na 2 O.10B 2 O 3 .20H 2 O, Na 2 O.5B 2 O 3 .10H 2 O or  Na 2 B 4 O 7 .5H 2 O. The particle size of the flame retardant is preferably less than 60 mesh BSS, more preferably less than 120 mesh BSS. Up to 30% by weight of boric acid can be readily incorporated and uniformly distributed over the surface of the wood chips. The resin binder may be a urea-formaldehyde, phenol-formaldehyde or melamineformaldehyde resin. The resin may contain in addition up to 5% by weight boric acid. In the specific examples the final pressing is carried out at 140‹ C. at a pressure of 350 p.s.i.
Patent GB-1507250-A (GB)
Title: Spark plug construction
IPC: H01T13/41
Filed: 1976-12-21
Abstract: 1507250 Spark-plugs CHAMPION SPARK PLUG CO 21 Dec 1976 [9 Jan 1976] 53239/76 Heading F1B A spark-plug for use in a capacitive discharge ignition system comprises an auxiliary spark gap 32, 35 located between the main spark gap 28, 29 and a low-resistance inductive suppressor 36.
Patent GB-1431116-A (GB)
Title: Method of and arrangement for storing handled bags
IPC: B65B43/14
Filed: 1973-11-16
Abstract: 1431116 Dispensing bags; carrier bags BENGT LUNDIN AB 16 Nov 1973 [24 Nov 1972] 53375/73 Heading A4G and A4T Bags, e.g. plastics carrier bags, each having two handle openings 2, 3 are supported by one opening 2 on a rod 1, the other opening 3 being folded down so that the bags may be pulled from the rod 1 in turn by grasping the folded down opening. The rod 1 corresponds in at least one cross-sectional dimension to the shape of the opening 2.
Patent GB-599286-A (GB)
Title: Improvements in or relating to mechanical stoking of furnaces
IPC: F23K3/16
Filed: 1945-09-14
Abstract: 599,286. Furnaces. FOSTER WHEELER, Ltd., and HOPEWELL, G. H. Sept. 14, 1945 No. 23758. [Class 51 (i)] [Also in Groups II and XXX] Coal is fed on to a travelling grate through two or more inlets which are spaced apart along the length of the grate in such manner that the coal is distributed along the grate, the large particles being deposited furthest from the ashdumping end of the grate, the points of deposition becoming progressively nearer to the ashdumping end as the coal decreases in particle size. As shown, the coal which has been progressively screened to obtain four particle sizes (see Groups II and XXX), is supplied according to the sizes, to hoppers 13, 14, 15, 16. The large particles in the hopper 13 are deposited directly on to the travelling grate and the smallest particles are transferred from the hopper 16 to the grate by a reciprocating pusher and an air or gas stream from the chamber 18 which directs them to the correct position on the grate. The intermediate sizes are supplied from the hoppers 14, 15 and are projected laterally into the furnace by known sprinkler apparatus. In a modification, the intermediate hoppers 14, 15 are omitted. The large particles are deposited, as before, on the grate remote from the ash dumping end above which is arranged a hopper feed apparatus which is supplied with coal of intermediate and smallest particle sizes. The coal is projected longitudinally of, and above, the conveyer by known sprinkler apparatus, but downwardly directed jets of air or combustion products force the finer particles down on to the grate near to the ash-pit.
Patent GB-1496903-A (GB)
Title: Label supply
IPC: G09F3/00
Filed: 1974-12-12
Abstract: 1496903 Label webs R A JONES & CO Inc 12 Dec 1974 [26 Dec 1973] 53821/74 Heading B8F A rolled preprinted precut label supply comprises a web 14 having a plurality of cuts 25 defining the labels 20 and leaving them attached to a remnant 21 of the web by bridges 22, wherein the ends of the cuts are curved so that the bridges taper going from remnant to label, whereby when a label is removed by a plunger, a major portion of the bridges stays with the remnant. Any portion of a bridge staying with the label partially fills a depression formed in the label edge. Feed sprocket holes are also formed by cuts 30. The web may be coated paper or plastics.
Patent GB-1199220-A (GB)
Title: Improvements in or relating to Non-Aqueous Electrolytes
IPC: H01M10/0569
Filed: 1968-11-14
Abstract: 1,199,220. Non-aqueous electrolytes; secondary cells. SOC. DES ACCUMULATEURS FIXES & DE TRACTION. 14 Nov., 1968 [15 Nov., 1967], No. 54170/68. Heading H1B. An electrolyte for secondary cells comprises a solution of a salt in R-CO 2 R<SP>1</SP> wherein R is a halogen atom or a halogenated methyl or halogenated ethyl group and R<SP>1</SP> is a methyl or ethyl group. A secondary cell is exemplified with a U-shaped Li anode enveloping a sintered copper disc (cathode) with an electrolyte of LiAlCl 4  in methyl chloroformate in which the positive active material in the charged state is CuCl 2 . Other esters specified are methyl chloroacetate and bromoformate and ethyl chloroformate and bromoformate. LiAlBr 4  may be used as solute in the bromo-esters.
Patent GB-1367659-A (GB)
Title: Circuit for supplying a regulated voltage
IPC: H03F1/30
Filed: 1972-11-23
Abstract: 1367659 Transistor amplifying circuits MOTOROLA Inc 23 Nov 1971 [10 Dec 1970] 54283/71 Heading H3T [Also in Division G3] A circuit for supplying a regulated D.C. voltage includes a starting arrangement for providing an initial bias to ensure rapid and stable operation of the circuit. In the circuit shown, operational amplifiers 11, 12 receive a regulated voltage at the base of a transistor 40. The regulating circuit 10 has an unregulated input at terminal 22A and comprises a dual collector transistor 14 in series with diodes 17, 18, 19 and formed on an integrated circuit chip. The diodes may be transistors with collector-base junctions shorted. The transistor 14 provides a predetermined stabilized current through the diodes 17, 18, 19 and is operated by a transistor 23 connected to its base and a transistor 25 which controls the bias current on collector 16. When power is initially supplied at terminal 22A, the transistor 14 may be non-conductive. In this case, a potential divider comprising a resistor 39 and diodes 37, 38 turns on a transistor 31 of a differential amplifier 30. Current is thus drawn from the base of the transistor 23, and the main supply transistor 14 is turned on. Current now flows through the diodes 17, 18, 19, energizing transistor 25 so that the current through the transistor 14 is stabilized, and also turning on transistor 32 and blocking transistor 31. The amplifier 30 now has no effect once the circuit has reached a stable operating condition. The diodes 17, 18, 19, 37 and 38 may be replaced by Zener diodes, but a larger unregulated supply is then necessary. In another embodiment, Fig. 2 (not shown), the amplifier 30 provides biasing current to the transistor 14 during normal operation as well as ensuring starting. The transistor 25 is thus no longer required. The regulating circuit 10 may also be used to supply an operational amplifier with inverting and non-inverting inputs for use as a comparator or difference tachometer, Fig. 3 (not shown).
Patent GB-1453599-A (GB)
Title: Image display ''vice
IPC: G09F11/24
Filed: 1973-11-23
Abstract: 1453599 Display devices; road traffic signs H F RYDSTROM 23 Nov 1973 [24 Nov 1972 29 Oct 1973] 54458/73 Headings G5C and G4Q An image display device, such as a roadsign, has an array of elements 101 pivoted at 102 and having a colour or display fragment in contrast to a background 105, the elements being settable to a horizontal position exposing background 105 by relay actuated air-stream setting means 106, in which position the elements are held by the electrostatic attraction of arresting electrodes 103 and insulators 104. To reveal the display sign, electrodes 103 are discharged to pivots 102, and elements 101 fall under gravity to a vertical position. In another form, elements 101 may selectively display either face and are deflected by air-jets to either side of a vertical equilibrium position under gravity. The elements may be held in the deflected position by an electrostatically operated mechanical catch. Again, remotely controlled handwriting display is possible using the selective discharge of electrostatic arresting electrodes. A small spacer lug between elements and insulators reduces air drag when an element is released.