baber/WOPTO huggingface dataset:
Patent GB-523546-A (GB)
Title: Improvements in or relating to the manufacture of methyl cellulose
IPC: C08B11/02
Filed: 1939-01-03
Abstract: 523,546. Cellulose ethers. HOUGHTON, A. A., TAYLOR, C. M., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 3, 1939, No. 198. [Class 2 (ii)] Low-substituted methyl celluloses are obtained by mechanically disintegrating cellulose material in presence of a non-mercerizing aqueous medium in which the total amount of water is less than that required for the etherification, simultaneously or subsequently mechanically distributing dimethyl sulphate in the disintegrated cellulose, treating the mixture with concentrated aqueous sodium hydroxide so that a mercerizing concentration of sodium hydroxide is formed therein, and allowing the methylation to proceed at a raised temperature. External heating may be applied during the etherification. Disintegration of the cellulose in the limited amount of water may be assisted by the presence of a neutral or alkaline lubricating agent such as glycerine, Turkey red oil, soap, water-soluble cellulose ethers, or dilute caustic soda of less than mercerizing strength. The products may be soluble in dilute aqueous alkali at ordinary temperature or they may be rendered soluble by cooling or by other methods. The viscosity characteristics may be controlled by variation of the time for which the reaction mixture is maintained at the methylation temperature after the methylation has ceased. The cellulose material may be cotton linters, sulphite wood pulp, or shredded wood pulp sheet or board. In an example, sulphite pulp sheet is cut into small squares and shredded in presence of dilute caustic soda solution. Dimethyl sulphate is added and the shredding is continued. Strong caustic soda solution is then added and after further mixing, the mass is spread out on open trays in a heated room. The reaction mixture is subsequently mixed with dilute sulphuric acid, centrifuged and washed. The product is mixed with caustic soda solution which is then cooled to -7‹ C. The partially frozen mixture is allowed to return to room temperature. A solution of the methyl cellulose is obtained. The solutions may be used for making films, or for dressing or filling textiles. Some of the solutions obtained tend to gel on standing, but 'if zinc oxide is added to the solutions this tendency may be overcome. Specifications 410,152 and 410,153 are referred to.
Patent GB-750263-A (GB)
Title: Improvements in or relating to fuel control and supply systems for aviation power plants
IPC: F02C7/22
Filed: 1954-01-06
Abstract: 750,263. Gas turbine plant, gear pumps. SHEPHERD. G. R. (Westinghouse Electric International Co.). Jan. 6. 1954, No. 386/54. Classes 110(2) and 110(3) A fuel system particularly suitable for a gas turbine engine has a primary pump and an emergency pump so arranged that in the event of failure of one pump the other pump maintains the fuel supply to the control valve. The fuel system comprises a primary gear pump 40 and an emergency gear pump 41 which are of similar capacity and a change-over valve 42 which are arranged to supply fuel to the control apparatus 11 from the supply line 43. The change-over valve 42 comprises a spring loaded piston which under the action of the discharge pressure from the pump 40 connects the discharge passage 51 of the pump 41 to the inlet passage 52 of the pump 40. The pumps 40, 41 discharge through non-return valves 64, 70 into the chamber 60 connected to control apparatus 11. A relief valve 78 is arranged in the by-pass 75 around the pump 40. A further relief valve 80 is arranged between the inlet passage 52 of the pump 40 and the supply line 43. A non-return valve 84 is arranged in the duct 83 connecting the supply line 43 with the inlet passage 52. In normal operation. the pressure at the discharge of the pump 40 holds the changeover valve 42 in the position shown, and the pump 40 supplies fuel to the control apparatus 11, excess fuel passing through the relief valve 78 to the suction of the pump. At the same time, the pump 41 is supplying fuel to the inlet passage 52 of the pump 40 where it is mixed with the fuel passed through the relief valve 78. Any fuel in excess of the requirements of the pump 40 is returned to the supply line through the valve 80. In the event of failure of the pump 41 to supply sufficient fuel, the valve 84 opens and fuel is supplied direct to the inlet 52 from the supply line 43. In the event of failure of the pump 40 the change-over valve cuts off the connection between the passages 51, 51a and the pump 41 supplies fuel direct to the control apparatus 11 through the non-return valve 64. In a modification the valve 84 is replaced by a valve controlled by a diaphragm responsive to the pressure difference between the passages 43. 51a.
Patent GB-605801-A (GB)
Title: Improvements in and relating to the manufacture of wire and other brushes
IPC: A46B5/00
Filed: 1946-01-04
Abstract: 605,801. Casting composite articles. KIDD, F., and KIDD, T. D. Jan. 4, 1946, No. 423. [Class 83 (i)] [Also in Group V]. In a method of making die-cast brushes, a bundle of the pliant elements of the brush is inserted loosely into an opening between the dies and is flattened to the required shape by the pressure of the mechanism which closes the dies together, the bundle being thereby caused to fill completely the opening in which it is received. The lengths of wire bare formed into bundles and placed in a recess c in a stationary lower die d so that they extend into the space e in which the stock of the brush is to be cast. The die is provided with a sprue d<SP>3</SP> and with holes d' and dowels d2 for aligning the die with a co-operating movable upper die. At the constriction between the spaces c.and e, the wires are tightly gripped between the two die parts. Molten metal, preferably a zinc base alloy or an aluminium alloy is then forced into the dies to form a brush having a handle h, and stock f in which are embedded the ends of the wires a, Fig. 2. In modified forms, the dies may be shaped so that a number of brushes may be cast simultaneously or so that a number of bundles of wires may be cast into one elongated stack. In another form, Fig. 8, intended for making a circular brush, the lower die m has a central recess n and an inclined surface p co-operating with a central recess n<SP>1</SP> and surface p<SP>1</SP> of an upper die r. The wires are arranged radially on the surface p and gripped between the two dies as shown. A core s and spreader t are inserted through a bottom plate u. The invention may be applied to making brushes of fibres or bristles embedded in suitable thermoplastic materials.
Patent GB-1163391-A (GB)
Title: Light Fitting
Inventor: BUNTE HANS
IPC: F21V17/00
Filed: 1968-01-03
Abstract: 1,163,391. Electric light fittings. GANTENBRINK-LEUCHTEN oHG. 3 Jan., 1968, No. 425/68. Heading F4R. A glass lighting fitting 20 has an upturned edge resting on three radial arms 4 which are connected by links 11 to a cover 14 for the top of the glass which can be displaced upwards causing the arms 4 to swing inwards to release the glass, the connection between the arms and the links allowing a small upward movement of the cover without the arms pivoting upwards. The arms 4 rest in slots within projections 7 on a bush 2 and are secured to the bush by a resilient ring 5 lying in the grooves in the bush and passing through holes in the arms. The links 11 pass through slots 10 on the arms and are held on the underside of the cover 14 by tongues pressed out from the cover and rolled over. The cover slides on a tube 1 carrying the lampholder. The apertures in the cover formed by pressing out the tongues serve for ventilating the fitting.
Patent GB-1499251-A (GB)
Title: Float-controlled valve
IPC: F16K31/24
Filed: 1976-01-07
Abstract: 1499251 Valves GESTRA-KSB VETRIEBSGESELLSCHAFT mbH & CO KG 7 Jan 1976 [28 Jan 1975] 00438/76 Heading F2V A float controlled valve 17 is lifted when a float 22 rises in a chamber 4 the valve member being seated at the end of an outlet tube 13 which is contained in a capsule 7 fixed in the chamber and having a movable wall 10 connected to the valve member, there being throttling inlet openings 23, 24 connecting the chamber with the interior of the capsule. With the valve seated pressure across the capsule is equalized but when the valve begins to open, flow through the openings 23, 24 produces a pressure difference causing the capsule to collapse and rapidly open the valve. The capsule may be fixed by a flange (28) Fig. 2 (not shown) and have a bell shaped rigid part (25) with inlet (29) to its interior and throttling passages 23, 24 to produce a pressure difference across a wall (27) to extend the capsule and open the valve rapidly subsequent to its metal opening. An alternative construction is described in which the openings 23, 24 are sealed against fluid flow and separate openings are provided between the housing space and capsule. The capsule bellows may be prestressed to give a valve closing force.
Patent GB-651071-A (GB)
Title: Improvements in or relating to machines adapted for progressively seaming together two or more layers of sheet material by use of the heating effect of a high frequency electric field
IPC: B29C65/04
Filed: 1948-01-07
Abstract: 651,071. Control systems for high frequency apparatus. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Jan. 7, 1948, No. 459. Addition to 645,406. [Class 38 (iv)] [Also in Groups VIII, XI and XL (c)] In a system for supplying high frequency electrical energy in pulses, in accordance with the invention of the parent Specification, to a seaming machine (see Group VIII), the amplitude of each pulse is automatically increased or decreased as the thickness of the work increases or decreases respectively. A highfrequency oscillator 46 supplying electrodes 10, 12 is pulsed through a power supply 48 which is connected to mains 60, 62 through a switch 70 in a pulse-timing circuit 50. Switch 70 is closed whenever a conducting element 84 on a rotary switch 82 geared to electrodes 10, 12 closes contacts 86 and thereby energizes the coil of a relay controlling switches 68, 70, 72 ; switch 70 then remains closed until a timing capacitor 78 discharges through a variable resistor 80. Pulse length is controlled by manual regulation of resistor 80. Pulse amplitude is controlled according to the thickness of the work by means of a variable resistor 52 mechanically linked to electrode 10 which is spring-pressed on to the work. Resistor 52 controls the phase shift of the grid voltage of rectifying valves 56, 58 with respect to the anode voltage, thus controlling the amount of rectification effected by valves 56, 58 and hence the value of the anode voltage supplied by these valves to oscillator 46. Specifications 613,419 and 649,038 are referred to.
Patent GB-868645-A (GB)
Title: Process for the production of valve tappets
Filed: 1958-01-06
Abstract: A process for making cast iron valve tappets comprises casting the tappets from a cast iron containing 3%-4% carbon on chills and then annealing the tappets at 600 DEG C. to 900 DEG C., preferably 730 DEG C. to 750 DEG C.
Patent GB-414691-A (GB)
Title: Improvements in and relating to refuse-collecting vehicles
IPC: B65F3/04
Filed: 1933-01-06
Abstract: 414,691. Sanitary bins. BURRELL, A. J., 40, Godfrey Road, Halifax, HATTERSLEY, H. W., and KARRIER MOTORS, Ltd., Karrier Works, Huddersfield, both in Yorkshire. Jan. 6, 1933, Nos. 487, 9150, and 33752. [Class 26.] In a refuse-collecting means incorporating an apertured cover a partially rotatable member is mounted, having means for receiving and holding a refuse bin, the member being provided with means for isolating the refuse chamber from the exterior both when in dust-bin receiving position and in dust-bin discharging position. A vehicle 1 is provided with an arched cover 28 having gaps therein to register with drums 3, the axles 4 of which are mounted on spaced transverse stretcher bars 2, one or two rows of drums being provided. The drums 3 comprise end discs 7 connected by a base plate 8 and a back 9, Fig. 3, and each adapted to receive a loaded bin and to invert it for discharge into the vehicle. The back plate 9 is provided with bars, flaps 11 or the like adapted to engage one of the handles of the bin, the other handle being engaged by an adjustable gate device. The drum is held in bin-receiving position by a stop 25 and a cam 26 engaged by a spring-controlled hand lever 27 which when released permits the drum with its bin to rotate forwardly under the influence of counter-balance weights to invert the bin for discharge, a further stop 25 and a cam 26 holding the drum in this position. Release of the cam 26 permits the drum to return. The vehicle is provided with a superstructure 52, Fig. 2, for the carriage of the scavengers or of old furniture, linoleum &c. The bin-engaging gate may be of several forms and as shown in Fig. 3 comprises two uprights 12 connected by horizontal rods 19 and two intermediate uprights 20 connected by rods 21 adapted to engage the bin handle. The uprights 12 are provided with arms 13 having slots 14 engaging trunnions 15 on the discs 7 and teeth 22 with which a gravity pawl 23 may engage. In operation, the gate is held in dotted line position with the arm 13 vertical while the bin is being loaded after which it is brought to full line position and moved forwardly to engage the bin handle. On rotating the drum the gravity catch 23 engages the rods 19 and holds the gate in engaging position until the drum is returned. Fig. 6 shows another form of gate in which the lower ends of the uprights are pivoted to slides 34 and are provided with projections 36 adapted to engage with teeth 37 which are so radiused as to permit the gate to be swung down outwardly but not inwardly. During rotation of the drum the top bar 31 is engaged by the teeth 42 of the gravity catch. In another form the gate may comprise uprights which pass through slots in the base 8 and are pivoted thereto by a rightangled portion permitting the gate to drop down alongside the vehicle. In the case of bins &c. having no handles, temporary handles comprising hook-like attachments 49-50, Fig. 8, may be provided.
Patent GB-1451671-A (GB)
Title: Sheet material for use in image transfer processex
IPC: G03F7/26
Filed: 1974-01-04
Abstract: 1451671 Radiation sensitive material having heat-fusible layer MINNESOTA MINING & MFG CO 4 Jan 1974 [5 Jan 1973] 00506/74 Heading G2C A material comprises a flexible backing which is transparent to infrared radiation bearing on one surface a layer capable of providing an infraredabsorptive image by imagewise exposure to heat or by imagewise exposure to light followed by development, and bearing on the other side a continuous, non-tacky, heat-fusible infrared transparent layer which comprises a mixture of resin and wax and is tacky at 60-210C. The layer sensitive to heat (see Examples 1, 2 and 5), may comprise a silver soap of a fatty acid and a phenolic co-reactant or mixture of ferric and silver soaps of fatty acids where the silver soap is present at 10-80 wt. per cent of the mixture, a toner for the silver image and a phenolic co-reactant for the soaps. The layer sensitive to light (see Examples 3 and 4) may comprise a photo-sensitive silver halide catalyst-forming means in catalytic proximity with a major proportion of organic silver salt oxidizing agent and reducing agent for silver ion. The heatfusible layer may comprise a polyamide resin, a fatty diamide wax and a pigment (see Examples 1-4) or microcrystalline wax, coumarone indene resin and toluene (see Example 5). The material is used in a transfer process in which it is (i) superimposed over a graphic original having infrared absorptive images areas and exposed to intense infrared radiation or (ii) imagewise exposed to light and developed depending on whether the material contains a heat- or light-sensitive layer, respectively, the heat-fusible layer is contacted with a receptor, subjected to intense infrared radiation and the material and receptor are separated leaving an imagewise distribution of heat-fusible layer on the receptor. The receptor may be opaque, transparent or translucent and may be used as a projection transparency. Multi-coloured images may be made on a single receptor by successively transferring coloured images to the receptor.
Patent GB-160956-A (GB)
Title: Improvements in revolving chimney cowls
IPC: F23L17/10
Filed: 1920-01-07
Abstract: 160,956. Wilson, F. C. Jan. 7, 1920. Chimney tops.-A cowl comprises a conical vane-wheel A mounted in a frame C having straps F by which it is secured to the pot. The lower end of the spindle B of the vane-wheel revolves in an oil cup D, the upper end being retained in an adjustable bush E which is screwed into the frame C and, when raised, allows the vane-wheel to be removed through the side of the frame.
Patent GB-587708-A (GB)
Title: An improved toy or display apparatus
IPC: A63H33/22
Filed: 1945-01-05
Abstract: 587,708. Toys. JACOBS, P. H. Jan. 5, 1945, No. 524. Convention date, Feb. 9, 1944. [Class 132 (iii)] [Also in Group XVIII] An amusement device comprises a rotating sphere or disc which appears continuously to change colour. The sphere &c. is vari-coloured and is rotated rapidly about one axis and slowly about an axis at right angles thereto. Fig. 1 shows a portable form, suitable for a toy, in which a sphere 1 is mounted about an axis 2 in a ring 3, itself rotatable about an axis 7, 9 by a fan 8 or by hand-operating gearing. About the equator of the sphere 1 is fixed a bevelled friction or toothed wheel 12 which is pressed to bear against a fixed mating bevel 11, thus imparting slow rotation about the axis 2 while rapid rotation takes place about the axis 7, 9. Fig. 7 shows a form suitable for attraction purposes, comprising two half spheres 30, 31 carried by separate co-axial spindles 32 journalled in a U-frame 33 mounted on a hollow vertical shaft 36. The shaft 36 is rotatable about a fixed inner hollow post 38, and is provided with a driving pulley 35. Bevel wheels 43 on the inner ends of spindles 32 mesh with bevel wheels 42 which are provided with rim teeth engaging a fixed worm 39. The post 38 is fixed to a base 37, and leads 46 may pass up it to light lamps 40, 44 when the sphere is translucent.
Patent GB-559769-A (GB)
Title: Improved lock for motor vehicles
IPC: E05B13/00
Filed: 1943-01-12
Abstract: 559,769. Fastenings. TERNSTEDT MANUFACTURING CO. Jan. 12, 1943, No. 534. Convention date, March 23, 1942. [Class 44] A motor car door lock 30 is separated from the door-operating handle 36 which is free to rotate when the door is locked, to prevent the lock being broken by forcing the handle. A rear compartment door 2 is secured to the car body 1 by a hook connection 16, 17. Rotation of the handle 36 turns the shaft 22, boss 21, and through links 19, 20 forces a slide 7 downwards through guides 8 and causes a hasp 13 first to move downwards to free the hook 16, and then rotate as indicated, through a pin 14 which, at each end, passes through a curved slot 15 on each side wall of the hasp, A pin 10 cannects the slide 7 to the hasp. To couple the handle to the release mechanism a key 29 is inserted into a barrel lock 30 and turned to rotate a squared shaft 32, and by means of a scroll cam 35 a pin 24 is raised against a spring 27 and the upper end of the pin enters a recess 23 in the spindle 22. Thus, rotating the spindle now will cause rotation of the boss 21 and actuation of the slide 7. During this movement, the pin head 28 turns along a guide track 37 upon which it rests until the door 2 is closed and the handle 36 placed vertically when the pin drops off the track 37 and disconnects the spindle 22 from the lock mechanism.
Patent GB-791685-A (GB)
Title: Improvements relating to electric lighting fittings
Inventor: NICHOLLS FRANK WILLIAM JOHN
IPC: F21V17/00
Filed: 1955-01-08
Abstract: 791,685. Lighting fittings. FULFORD BROWN BROS. (1929), Ltd. Jan. 9, 1956 [Jan. 8, 1955], No. 640/55. Class 75(2) In an electric lighting fitting of the kind comprising a ceiling mounting or conduit carrying on its lower end a lampholder housing 1 and a shade 3 detachably secured to the fitting, the shade is detachably connected to the feet of a spider 2 provided with a cylindrical crown, for example a ring 16, which is coaxial with the shade and is capable of passing over the lamp and of being received in the lampholder housing 1 and the latter has bayonet type slots 10 which are engaged by the legs of the spider. The spider has three equidistantly spaced legs 12, the lower ends of which are threaded and pass through holes in the shade and are fastened thereto by nuts 15, and the upper ends of which are attached to the ring 16 and have inturned parts 18 which engage the bayonet slots 10. The lampholder housing 1 is bell shaped and is attached to a ceiling rose 4 by a threaded ring screwed on to a combined lampholder and wiring block passed through coaxial openings in the rose and lampholder housing. A safety catch comprising a pivoted arm adapted to obstruct the movement of the inturned parts 18 of the spider may be provided.
Patent GB-667704-A (GB)
Title: Device for closing the grippers of machines for sewing the soles of fibre-soled shoes
IPC: D05B23/00
Filed: 1950-01-10
Abstract: 667,704. Sewing coiled - plait shoe - soles. FRASER, R. M., and FABRICA ARGENTINA DE ALPARGATAS S.A.I.C. Jan. 10, 1950, No. 659/50. Classes 17 (i) and 112. The grippers 5 for holding coiled-plait shoesoles during sewing are closed by pusher-members 2 carried by an endless chain 1 rotated so that the members and the grippers move at the same speed. The chain, carried by sprocket wheels 3, 4, may be carried along by the grippers or, alternatively, the chain may be rotated by providing one of the wheels with a ratchet connected to the sewing mechanism. The wheel 3 is closer to the grippers than the wheel 4, and a member 8 is provided to prevent the chain deflecting.
Patent GB-1263441-A (GB)
Title: Colour photographic silver halide printing papers
IPC: G03C7/20
Filed: 1970-01-06
Abstract: 1,263,441. Colour photographic silver halide light-sensitive material. FUJI PHOTO FILM CO. Ltd. Jan.6, 1970 [Jan. 8, 1969], No.678/70. Addition to 1,247, 754. Heading G2C. A colour photographic light-sensitive silver halide printing paper comprises a support having thereon multiple photographic layers wherein at least one of said layers contains a fluorescent brightening and ultraviolet absorbing agent which is a polymer or copolymer as defined in any of claims 1 to 4 of British parent Specification and a different ultraviolet absorbent in a layer which is the layer containing the (co) polymer or is a layer no farther from the support than the layer containing the (co) polymer, but is not the uppermost protective layer. The different ultraviolet absorbent may be a triazole, benzophenone, thiazolidone, cinnamic acid ester, oxazole, thiazole, imidazole, oxadiazole, thiadiazole, thiophene, benzalazine or a bis-hydroxyarylamide compound. The printing paper has sufficient whiteness and fading under ultraviolet light is prevented by the presence of an ultraviolet absorbent.