baber/WOPTO huggingface dataset:
Patent GB-171208-A (GB)
Title: Improvements in or relating to treads for steps or staircases
IPC: E04F11/16
Filed: 1920-08-21
Abstract: 171,208. Wood, W. H., and Wood, D. H. Aug. 21, 1920. Treads.-A tread for steps, staircases, &c., is formed as a sheet-steel pressing having side and end flanges and corrugations or depressions 4 the tops of which are preferably more pointed than the grooves. Draining-holes 5 and bolt-holes 6 are provided. The shape or pattern of the corrugations or indentations may differ from that shown. The end flanges are used to secure the treads to the staircase.
Patent GB-297963-A (GB)
Title: Improvements in grinding or abrading apparatus
IPC: B24B7/17
Filed: 1927-09-17
Abstract: 297,963. Haldenby, T. S. Sept. 17, 1927. Disc apparatus; gauges.-Apparatus for grinding annular metal discs or washers to a predetermined thickness consists of peripherally opposed grinding and feed wheels d, e between the operative surfaces of which the washer c is located, the washer being rotatably mounted on grooved rollers b<6>, b<61>, b<62> carried by the flange b<1> of a slide b, which is moved, during grinding to move the washer across the surfaces of the wheels, by a handle b', a stop b<5> serving to limit the movement. The roller b<62> is carried by a member b<8> slidably adjustable in the flange b<1>. In operation, the feed-wheel is adjusted towards the grinding-wheel and one surface of the washer is ground ; the washer is then reversed and the other surface ground, the feed wheel being moved until arrested by a stop to give the required thickness to the washer.
Patent GB-335681-A (GB)
Title: Improved means for governing the speed of electric motors
IPC: H02P7/06
Filed: 1929-08-12
Abstract: 335,681. Sandison, A. G. S. Aug. 12, 1929. Variable resistances. -The speed of a motor is governed by the variation of the resistance of an element in its circuit which has a high resistance temperature coefficient and which is cooled by a fan to an extent depending on the motor speed. In the form shown, the quantity of air flowing over the resistance element 14A, is varied by the axial position of an air impeller 2 attached to the governor. This impeller is fitted with blades 3 which force air, entering at 11, between the rim 12 of the resistance housing and the shroud rim 4 of the impeller and thence over the element 14A and out through the top of the housing. As an alternative to varying the quantity of air or other cooling gas, the resistance may be varied by the variation of the proximity of a cooling surface by means of a governor, the resistance in this case being arranged substantially in one plane instead of in helical coils.
Patent GB-443721-A (GB)
Title: Improvements relating to electric bulbs for road vehicle lamps
IPC: H01K1/26
Filed: 1934-08-27
Abstract: 443,721. Electric incandescent lamps with internal screens. LUCAS, Ltd., J., and NEILL, R. L., Great King Street, Birmingham. Aug. 27, 1934, No. 24607. [Class 39 (ii)] In electric incandescent lamps for road vehicles, of the kind wherein a filament or filaments is or are arranged to lie along or immediately adjacent to the horizontal axis of the bulb, a shield extending upwardly from the horizontal axis co-operates with a filament to intercept the whole of the direct light from that filament in the upper half of the light beam. In one form wherein a lamp is provided with two filaments a, b arranged in alignment along the horizontal axis of the bulb, an opaque concave shield c is mounted beneath the forward filament a and extended upwardly at its rear portion to form a shield e which intercepts light that would otherwise pass directly into the upper half of the beam from the filament b. As shown, the direct light from that filament is thus suppressed throughout the angle f. When used in a single filament lamp the shield extends upwardly from the axis at the front end of the filament. The shield is preferably semicircular in form, with its centre on the axis of the filament, and may be made of metal with a reflecting surface on the side facing the filament. Specification 404,222 is referred to.
Patent GB-284959-A (GB)
Title: Shoe sole cementing apparatus
IPC: A43D25/06
Filed: 1927-09-22
Abstract: 284,959. Burtchaell, S. W. Sept. 22, 1927. Sole-laying.-A sole-laying press comprises a frame 5 movable relatively to a shoe last 3 from a position beyond the last to a position in which the frame intersects the last, means acted on by the frame upon its downward movement pressing the sole against the last, and means for releasably retaining the frame in operative position. The frame 5 is pivoted at 6 to a plate 8 apertured to receive the tapered upper end 2 of the jack. A tubular elastic member 17 is carried by the frame to press the sole downwards. The last is provided with recesses 13 having off-set extensions to engage hooks 15 by which the last is detachably held to the plate 8. A pivoted latch 10 retains the frame in operative position. With the parts in the position shown, the press may be lifted off the jack and put aside until the adhesive has set, the jack being then available for use with another unit.
Patent GB-272736-A (GB)
Title: Means for preventing entry of rain water or other foreign matter into liquid fuel tanks or receptacles
IPC: F16J13/02
Filed: 1926-10-08
Abstract: 272,736. Gilleran, T. J. Oct. 8, 1926. Funnels.-In order to prevent the entry of rain or other foreign matter into liquid fuel tanks, the usual filling nozzle or tundish has clamped thereto a flat or concavoconvex guard, adapted to fit over or surround the filling orifice. Narrow radial, widely-spaced ribs 3<1> allow the escape of air.
Patent GB-1316812-A (GB)
Title: Vaporization-cooled power tubes
IPC: H01J23/033
Filed: 1970-05-22
Abstract: 1316812 Separating liquid droplets from gas VARIAN ASSOCIATES 22 May 1970 [16 June 1969] 25006/70 Heading BIT [Also in Division F4] The beam collector structure 2 of a power beam tube is cooled by a liquid coolant flowing in a closed circuit comprising a boiler 4 in which the structure is immersed for vapourization of the coactant, a composite weir and vapour separator 5, a vapour condenser 6 and a return conduit 8. The weir and separator 5 are positioned above the boiler in a chamber 13 and comprise an inverted funnel shaped conduit 15 projecting into the chamber, through which conduit the coolant flows upwardly to a concave-shaped reflector 16. Vapourized coolant passes upwardly around the deflector and through a port 19 in the top wall of the chamber to the condenser and the liquid coolant is deflected downwardly around the outside of the conduit 15 into a lower liquid weir portion 18 of the chamber surrounding the conduit 15 for eventual flow through apertures 21 in the conduit and gravity flow to the boiler. A liquid level sensor 25 is mounted in the weir to control voltage to the power beam. An overflow weir 23, reservoir 9, pump 11 and drain valve 12 may be provided or the circuit may be gravity fed, with a makeup reservoir directly feeding the weir. The coolant may be purified and de-ionized water.
Patent GB-935660-A (GB)
Title: Improvements in or relating to door handles for motor vehicles
Inventor: COLEMAN DAVID GEORGE
IPC: E05B7/00
Filed: 1961-07-11
Abstract: 935,660. Latches. WILMOT BREEDEN Ltd. July 2, 1962 [July 11, 1961], No. 25133/61. Class 44. A handle for fitting externally on a door 31 of a motor vehicle and operable to release a locking mechanism 39, comprises a main fixed handle portion 30 adapted to be fixed to the door with its ends adjacent the surface of the door and shaped so that it can be gripped by the fingers placed between the main portion and the door, a spring-loaded pivoted member 33 partially protruding from the main portion on the inner side thereof, the pivoted member having a grip portion adapted to be moved towards the main portion when the latter is gripped, the pivoted member comprising a lever pivoted in a fixed part of the handle and having a cam surface 35 bearing against a co-operating surface on a further lever 36 also pivoted in the fixed part of the handle, the further lever 36 being operatively connected to the locking mechanism for the door to release a door latching member when the pivoted member 33 is gripped and moved against the spring force, the cam surface 35 and co-operating surface being arranged so that mechanical advantage varies as the pivoted member is moved.
Patent GB-842816-A (GB)
Title: Process for preparing 2-methyl-2-ú¯-propyl-1, 3-propanediol dicarbamate
Inventor: GHIELMETTI GIUSEPPE
IPC: C07C271/06
Filed: 1958-08-06
Abstract: 2-Methyl-2-n-propyl-1:3-propanediol dicarbamate is prepared by reacting the diol with ethyl carbamate at a temperature not exceeding 180 DEG C. and in the presence of an aluminium alcoholate of the formula Al(OR)3 where R is an alkyl radical of at most 6 carbon atoms.  The preferred catalysts to area luminium ethylate, propylate and iso-propylate and the reaction is conveniently carried out at a temperature of 140 to 160 DEG C. for a period of about two hours. Examples are given.
Patent GB-1024223-A (GB)
Title: Process for treating cellulosic fabrics
Inventor: CAMERON WALTER GLEN
IPC: D06M15/71
Filed: 1961-11-22
Abstract: Fabrics containing at least 50% by weight of cellulose fibres are shrinkproofed and their abrasion resistance is improved by impregnating them with an aqueous liquid containg (a) a water-soluble condensation product of formaldelhyde with a compound which contains two nitrogen atoms, each carrying at least one hydrogen atom and each being directly attached to a carbon atom which is itself directly attached to a further nitrogen atom, which may be one of the two nitrogen atoms, and is doubly bonded to an oxygen atom or a third nitrogen atom, or an ether of the condensation product and (b) a homopolymer of an alkyl acrylate in which the alkyl group contains not more than four carbon atoms or a copolymer thereof with less than 10% of a copolymerisable monomer, e.g. methyl methacrylate, styrene or acrylonitrile, the weight of alkyl acrylate polymer being 30-80% of the total weight of the condensation product plus polymer, so as to leave not more than 7% by weight of solids on the fibre and then curing by heating, e.g. to temperatures of above 100 DEG C.  The water soluble condensation products may be those of formaldelhyde with urea, melamine, dicyandiamide, acetylene diurein or cyclic ethylene urea.  The impregnation liquid may also contain an acid or potentially acid catalyst, e.g. ammonium thiocyanate, and an antisoiling additive, e.g. chalk.  Fabrics comprising cotton or regenerated cellulose fibres alone or in admixture with wool, cellulose acetate, nylon, polyacrylonitrile or polyethylene terephthalate fibres may be treated.  The treated fabrics may be used for pocketing, trouser waistbands, overalls, dust coats or furnishing fabrics.
Patent GB-841420-A (GB)
Title: A method of producing citric acid by fermentation
IPC: C12P7/48
Filed: 1958-08-06
Abstract: Citric acid is produced by the aerobic fermentation of a carbohydrate-containing culture medium with Trichoderma viride, including T. lignorm, T. coningi, T. album and verticillium glaucum. The acid may be isolated as such or as the calcium salt. Solid or liquid media may be used at a pH of 3 to 7 and a temperature of 20-35 DEG  C.
Patent GB-1044839-A (GB)
Title: Improvements in and relating to means for opening and closing garage doors
IPC: E05F15/20
Filed: 1962-07-02
Abstract: 1,044,839. Control of A.C. motors. B. J. LUKES. June 28, 1963 [July 2, 1962], No. 25248/62. Heading H2J. [Also in Divisions E2 and G1] Control means for opening and closing garage doors comprises a door-actuating mechanism driven by a motor in circuit with an operating switch or switches operable by the passage of a vehicle, a switching device being actuated by the doors to condition the motor circuit for door closing or opening when the doors are in their open or closed positions respectively. Rotary motion of the motor shaft 10 of a reversible electric motor M, Fig. 7, is converted, by way of a universal joint and a screw 11, Fig. 4, engaging a nut having a tubular extension 13, to axial displacement of the tubular extension 13 which carries a ball joint 14. The ball joint 14 is connected to a lever 15 which moves two bell cranks 16 about fixed pivots 21 to open or close the garage doors 19 through levers 17. Two photo-transistors OS2 and OS1, Fig. 1, mounted on the garage door and on the rear wall of the garage respectively, are operable by car headlights so that OS2 opens the doors and OS1 closes or opens the doors behind the car in the garage. A manually operable switch OS3 is also provided for this purpose. When any one of these switches is closed, the bias on a transistor TR2 drops to zero, and therefore TR2 is cut off and its collector voltage rises. This causes a negative pulse to be transmitted through a condenser C1 to the base of an amplifying transistor TR1, which then conducts to energize a relay SR which remains energized through contacts SR2 and switches SW2, SW3 and closes the motor circuit at switch SR1. The drive direction of the motor depends upon the position of changeover switch contacts COS1 and COS2, which are actuated by a system of levers and springs, Fig. 2 (not shown) to turn the change-over switch operating spindle according to the position of the doors so that the motor circuit is conditioned as described above. A switch SW1 in the emitter circuit of OS2 can be left open so that the doors cannot be opened from the outside. The motor M is mounted in a U frame 27, Fig. 7, between resilient packing pieces 28 through which the operating spindles of switches SW2, SW3 extend. In the event of an object obstructing movement of the doors, the motor will move on its resilient mounting to open either SW2 or SW3 to break the " holdon " condition of relay SR and thus stop the motor M. A switch SW4 is mounted so that its operating spindle 25 is engaged by the closed door so that tampering of the doors closes SW4 and operates an alarm I through contacts COS3 and SR2.
Patent GB-199644-A (GB)
Title: Improvements in cooking apparatus
IPC: A47J27/16
Filed: 1922-09-19
Abstract: 199,644. Bell, S. W. Sept. 19, 1922. Steam cooking-apparatus. - Steam cooking- apparatus, particularly adapted for cooking hams and the like, comprises a lagged chamber a having a base c which contains water, heating- tubes k traversed by the combustion products from burners j, a flue Z, a gas-supply regulator m operated by the steam-pressure in the chamber a, a vent valve s, a pressure gauge and a safetv valve r. One or more wheeled trucks or racks f carry the ham-containers i and are supported on the perforated floor g. The door n is secured by sliding bolts operated by a rotary handle p, and disengagement of the bolts before the opening of the vent valve s is prevented by the engagement of an arm t, on the valve handle s, with a step on one of the bolts. On opening the valve, the arm t is disengaged and the door may be opened. According to the Provisional Specification, the water-bath is heated by burners situated beneath it and a grid carrying rails for the trucks may be placed over the water-bath.
Patent GB-789869-A (GB)
Title: A table game
IPC: A63F7/06
Filed: 1956-08-20
Abstract: 789,869. Table games. REX SOC. A.R.L. and OULEVEY, E. A. Aug. 20, 1956 [Aug. 26, 1955], No. 25368/56. Class 132(2) A table game resembling hockey comprises a four-sided casing provided at its upper part with a horizontal plate surmounted by a frame defining a playing surface over which a ball may be moved, this plate carrying elements 6 which are used to strike the ball towards one of the recesses 9. The elements 6 are each provided with a permanent magnet subjected to the action of movable permanent magnets 24 beneath the horizontal plate, which are made to move longitudinally, transversely or rotatably. An element 7 is placed in front of each of the recesses 9 adapted to strike the ball. It is connected to a movable rack 11 (Fig. 2) on a support 12 and moved by means of a toothed wheel 15, on a spindle, 16, with an operating handle 17. The movable permanent magnets 24 are fixed in pairs at the opposite ends of plates 34 mounted at 23 on a spindle 33 which is turned by a shaft 40 through toothed wheels 38, 39 (Fig. 3). The spindle 33 is carried by a support 31 which is supported by slides 26, 27 on longitudinal rods 13 by means of rods 30. The magnets 24 are held in spring-loaded cylinders 37. The shaft 40 is rotatably mounted by means of a sleeve 43 on the slide 27 and carries a wheel 44 provided with a screw bolt 45 connected by a link 46 to a pin 47 fixed to a toothed wheel 48. The slide 27 is attached to the end of the tubular shaft 52 which forms part of the corresponding control member 25, the former end carrying a toothed sleeve 55 which engages with the toothed wheel 48 and the latter end carrying an operating handle, 57. This operating handle enables the plate 34 to be revolved with the spindle 33. It also enables the slides to be pushed or pulled along the rods 13 imparting a longitudinal motion to the plates 34 and magnets '24. Lateral motion is imparted to the support 31, of the plate 34, by means of a rack bar 32, which pulls the support 31 along the supports 30. A pinion 61 engages with the rack bar 32 and is operated by a shaft 60 inside the shaft 52 with an operating wheel 63. - The flow of the recesses. 9 has two openings connecting with two channels 64 opening into a mag- .azine 65, from which the ball is projected back into play after passing through one of the recesses 9. In a modification, the spindle mounted in the slide 27 may have two co-axial pinions operating the lateral and rotary movements simultaneously. Wires 68 restrict the movements of each element 6 to a particular area of the playing surface.
Patent GB-849816-A (GB)
Title: Production of chlorine dioxide
IPC: C01B11/02
Filed: 1956-08-20
Abstract: <PICT:0849816/III/1> In the continuous or semi-continuous production of chlorine dioxide by the reduction of an alkali metal chlorate in aqueous sulphuric acid solution of a concentration of 1-5.5 molar, preferably 4.0-4.8 molar, the chlorate content of the solution being 0.01-0.5 molar, preferably 0.03-0.2 molar, the reaction is carried out in the presence of added chlorine, a hypochlorite, or a chloride so as to maintain a concentration of free or combined chlorine other than as chlorate or chlorine dioxide of 0.05-0.25 gm. atom/1.  The flow of reactants and reaction products may be continuous or intermittent.  The hypochlorite may be hypochlorous acid, or sodium, or potassium hypochlorite.  The chloride may be hydrochloric acid, or sodium, or potassium chloride.  The chlorine, hypochlorite, or chloride may be added as such, or as an aqueous solution.  The reaction temperature may be 25-90 DEG C., preferably 25-35 DEG C. The reducing agent may be sulphur dioxide, methanol, sugar, or spent sulphite liquor.  The ratio of sodium chloride to sodium chlorate charged may be 1-20 mole per cent, e.g. 10%. 5 1. of sulphur dioxide and 40 1. of air may be charged to 2.5 1. of the reactant solution per hour to produce chlorine dioxide of 125-180 mm. partial pressure. 18% sulphur dioxide, as produced by a sulphur burner, produces a chlorine dioxide partial pressure of ca. 260 mm.  The partial pressure should not be above 300 mm.  Product chlorine dioxide containing hydrogen chloride may be dissolved directly in water to produce an acid solution suitable for bleaching, or may be washed with water, constant-boiling hydrochloric acid, or sodium chlorate feed solution, and the hydrogen chloride absorbed distilled off and recycled.  Alkali metal bisulphate or sesquisulphate may be crystallised from the product solution by cooling, which may be preceded by evaporation.  The product solution or sodium bisulphate or sesquisulphate crystals obtained therefrom may be neutralised with caustic soda or soda ash as solid or solution, and sodium sulphate crystallised from the resulting solution by cooling, which may be preceded by evaporation.  Examples specify particular proportions of reactants and conditions of reaction. As shown, sodium chlorate, sulphuric acid, and sodium chloride solution are passed into a water cooled reaction chamber 10 from above through lines 11, 13 and 47, respectively, while steam and a mixture of sulphur dioxide and air are passed in from below through lines 29 and 30, respectively.  The gases may pass through a diffuser 33, and circulation of solution may be aided by a concentric circular tube 34.  Product chlorine dioxide passes through line 35, while product solution is partly recycled via line 40, and partly bled off for the recovery of sodium sulphate via line 39.
Patent GB-356450-A (GB)
Title: Improvements in or relating to turbines
IPC: F01D1/34
Filed: 1930-08-26
Abstract: 356,450. Steam &c. turbines. WILSON, T., Holly Lodge, Sleights S.O., Yorkshire. Aug. 26, 1930, No. 25445. [Class 110 (iii).] A turbine has a number of inlets and one exhaust port the total number on one cross section of the turbine corresponding to the number of cells contained in the rotor. In one form of the invention, Fig. 1, a reversible rotor 16 has cells 30 for anticlockwise, and cells 31 for clockwise direction of rotation, inlet ports 35 which are in pairs and a pair of exhaust ports 20. Steam or other working fluid is supplied to an annular chamber 15 through a port 19. Piston valves 47 are slidable axially to control the pairs of inlet ports 35 by means of a lever 43 which moves a pulley 42 axially on keys 29 as guides, to open one port 35 for one direction of rotation. Labyrinth packing rings 24, 25 are formed on the rotor periphery. The rotor 16 has lightening holes 34. In a modified arrangement a non-reversable turbine has two sets of cells formed on the rotor periphery, the sets being staggered, a number of inclined inlets and one exhaust port. In an alternative inletcontrol means for the turbine shown in Fig. 1, a series of rotary valves are connected by links and operated simultaneously by one lever.
Patent GB-317828-A (GB)
Title: High-frequency thermionic valve amplifier
IPC: H03F3/02
Filed: 1929-08-22
Abstract: 317,828. Ardenne M. von. Aug. 23, 1928, [Convention date]. Vacuum tubes.-In a high-frequency amplifying valve containing several separate electrode systems in a single envelope, the last valve has an anode-screening grid. As shown, the inner grid 7 of the first system is connected as a spacecharge grid, and the outer grid 9 is connected to the input circuit. In the second system, the inner grid 8 is the input grid, and the outer grid 10 is at high positive voltage and acts as a screen to the anode 12. In a modification, additional leads are brought out through the valve envelope, to enable the second system to be converted into a valve with the ordinary spacecharge grid connections.