baber/WOPTO huggingface dataset:
Patent GB-495947-A (GB)
Title: Planing saw
IPC: B27B33/02
Filed: 1938-04-22
Abstract: 495,947. Saws. BEARDSHAW & SON, Ltd., J., and BOUILLON, V. April 22, 1938, No. 12047. [Class 145 (ii)] A combined cutting and planing saw in which both the tips and the sides of the teeth cut or plane the wood, is provided with teeth disposed wholly within the planes of the sides of the saw and having cutting surfaces bevelled alternately to right and left, the set to the teeth being provided by a slight flare, shown greatly exaggerated at 3, produced, after the teeth have been sharpened, by a burring tool.
Patent GB-795904-A (GB)
Title: A process for the preparation of alkali metal silicates
IPC: C01B33/32
Filed: 1956-04-20
Abstract: Soluble alkali metal silicates are prepared by fusing a mixture of sand and an alkali metal chloride, cooling the product, comminuting, and heating in the presence of steam at 900-1400 DEG  C. The process is described with reference to sodium silicates but potassium silicates are mentioned.  The yields of soluble alkali metal silicate are high and the volatilization losses of chloride low with an alkali metal chloride/silica ratio of 1:1.5.  The mixture may also comprise 1-10 per cent of an alkali metal salt other than the chloride, e.g. one or more of potassium carbonate, sodium carbonate and sodium bicarbonate: this addition improves yield and reduces the reaction time.  Fusion may be conducted at 810-850 DEG  C. (sodium chloride) or 780-820 DEG  C. (potassium chloride) in a cylindrical rotary furnace, and thereafter comminution need only be sufficient to form small particles through which steam will readily pass.  Examples are given.
Patent GB-1145243-A (GB)
Title: Process of forming tin oxide coatings
Inventor: SERVAIS ALBERT
IPC: C03C17/25
Filed: 1966-03-18
Abstract: 1,145,243. Coatings. GLAVERBEL. 18 March, 1966 [25 June, 1965], No. 12129/66. Heading B2K. Tin oxide coatings on glass or other material particularly electrically insulating material are produced by applying a solution of anhydrous stannous chloride in an anhydrous organic solvent, hydrolysing the tin chloride by contact with a moisture-containing atmosphere and then drying and baking the coating. The anhydrous stannous chloride solution may be applied by spraying, or dipping the article in the solution with withdrawal of the article from the solution at a controlled speed. Compounds which become converted into an oxide of another metal may be present in the solution. In the preferred embodiment stannous chloride solution is applied in an atmosphere at 25 to 35C., and hydrolysis achieved is an atmosphere with a relative humidity of less than 60%. The coatings are baked at 380 to 480C., .the drying and baking steps being performed in different furnaces, e.g. in furnaces having radiant heating elements fitted to its interior vertical walls. The coatings may be electrically conductive or semi-conductive and/or transparent, capable of reflecting light radiation. The article coated may be sheet glass which has subsequently to be cut into smaller pieces e.g. to be used in glazing units or as instrument dial glasses having antistatic properties. The tin oxide coating may be formed on previously formed coating(s) of the same or different composition.
Patent GB-1506685-A (GB)
Title: Apparatus for removing dust-containing gases during coking operations
IPC: C10B33/00
Filed: 1976-03-25
Abstract: 1506685 Removing dust containing gases during coking operations HARTUNG KUHN & CO MASCHINENFABRIK GmbH 25 March 1976 [26 March 1975 22 July 1975] 12151/76 Heading F4X A stationary collecting main 1 receives gases containing dust and other particulate matter evolved during operation of a coke oven battery, e.g. during charging of an oven, Figs. 11 (and 12, not shown), or during discharging of an oven, Fig. 14 (not shown). The gases are collected by an arrangement which is movable from one coking chamber to the next. As shown in Fig. 11, the movable arrangement includes a hood 45 and duct 46, 11 therefrom. The end 11 of the duct is carried by a carriage 10 which envelops the top of the stationary main 1. The duct communicates with the main 1 through a longitudinal slot in the main. The slot is normally closed by a flexible belt 2, Fig. 5, but this is lifted by pulleys 14, 15 on the carriage 10 to put the duct 11 into communication with the main 1. To protect the flexible belt 2 from heat from collected gases in the main, shield plates 3 are provided which extend across the longitudinal slot. As shown in Fig. 5, the plates 3 are curved. Their curvature causes the gases flowing into the main to be directed away from the belt. Additionally, cool air is blown on to the belts lower surface by slotted tubes 5 and through tubes 18 with outlets 19. In a modification, Figs. 7 to 10 (not shown), the plates 3 are flat and pivotable between inclined positions (allowing passage of gas between them) to horizontal positions where they contact each other and more effectively shield the belt). Pivoting is by means of levers (24), Fig. 10 (not shown), external to the main. The levers (24) are acted on by a sled (25) on the carrier 10.
Patent GB-1465887-A (GB)
Title: Monolithic integrated circuit for separating the line and  frame synchronisation pulses of television receivers
IPC: H04N5/08
Filed: 1975-03-24
Abstract: 1465887 Line and frame pulse separator ITT INDUSTRIES Inc 24 March 1975 [30 March 1974] 12179/75 Heading H3T Line pulses from a composite video signal are extracted by a differentiator R1, C1, and frame pulses by an integrator R2, C2. The circuit is said to be particularly suitable for integration.
Patent GB-762019-A (GB)
Title: Photographic silver halide emulsion preparation
IPC: G03C1/053
Filed: 1954-04-27
Abstract: 762,019. Photographic silver halide emulsion preparation. DU PONT DE NEMOURS & CO., E.I. April 27, 1954 [May 11, 1953], No. 12224/54. Class 98(2) A process for removal of soluble salts and water after formation of silver halide comprises, mixing, in any order, an aqueous dispersion of silver halide in a water-permeable amphoteric protein colloid, an aqueous solution of a watersoluble acid-soluble high molecular weight organic polymer containing a plurality of recurring oxy and acid or salt groups, and an acid to lower the pH below the isoelectric point of the colloid, and recovering the precipitated complex of the colloid and polymer containing the silver halide. Examples I, II and III describe adjustment of an unwashed bromocodide emulsion containing 282 grams of silver halides and 50 grams of gelatin to pH 6.3 at 80‹F., addition of a 5 per cent solution of a partial acetal of polyvinyl alcohol and o - sulphobenzaldehyde, and then of nitric acid to produce pH 2 and cause the desired precipitation in the form of discrete granular particles. The supernatant liquid is decanted, the precipitate is rinsed, redispersed by raising the pH to 6.5 with caustic soda, sensitized, digested and coated in the usual manner to produce coatings equivalent in photographic properties to similar emulsions prepared by the washing process. Examples IV and V describe similarly, the use of carrageenin and methylvinyl ether-maleic acid copolymer instead of the specified polyvinyl acetal. Variations of the process include the use of albumin or casein as colloid; acetals of polyvinyl alcohol or partially hydrolysed polyvinyl acetate with a   and # sulphonaphthaldehydes or # sulphopropionaldehyde, sulphate of polygalactan and phosphate of polyglycidyl methacrylate as high molecular weight polymer; and sulphuric hydrochloric and acetic acids to lower the pH and cause precipitation. The invention enables production of emulsions with high silver halide/gelatin ratio. The disadvantages of the noodling and washing process and also of precipitation processes with organic solvents, inorganic and organic salts, anion soaps, alkyl sulphuric acids and sulphates, and acid-insoluble resins and gelatin derivatives for the same purpose are described. Specifications 600,039 and 762,011 [Group IV(a)] are referred to.
Patent GB-485809-A (GB)
Title: Improvements relating to syphonic-discharge water-closet basins
IPC: E03D11/18
Filed: 1937-04-29
Abstract: 485,809. Sanitary closets. BOLDING & SONS, Ltd., J., and FARRANT, W. J. April 29, 1937, No. 12227. [Class 26] In a siphonic discharge water-closet of the kind in which the discharge passage is provided with two traps, and the space between the traps is connected by an air pipe to the flush pipe so that, during the flush, air is extracted from the space to start the discharge, the whole of the air pipe above the point where it passes into the closet basin is housed within the flush pipe. The flush pipe 8, connected at the upper end by a gland nut 22 with a sleeve 21 on the cistern 9, is screwed at the lower end into a union 10 formed with a flange 11, and adapted, by means of a rubber ring 12, to form a watertight joint when it is pushed nto a socket 6 on the flush chamber 5. Before assembly the ring 12 rests in a groove 13. The air pipe 14, formed with a closed top and holes 15, is screwed into a central boss 16 supported by arms 17 in the union 10. An extension 18 is also screwed into the boss 16, so that, when the assembly is plugged into the closet, its enlarged lower end descends over, and makes an airtight joint with, a spigot 7, fixed in the bottom of the flush chamber and connecting with the space 4 between the outlet traps 3, 3a. The joint is completed by a rubber ring 19, which is rolled down during assembly from its rest position above a shoulder on the spigot 7. To facilitate assembly the lower end of the extension 18 is internally coned at 18a. The flush pipe and air pipe thus form a self-contained assembly. A ring 20 at the upper end of the flush pipe forms a Venturi jet to direct the water on to and around the air pipe.
Patent GB-418357-A (GB)
Title: Improvements in apparatus for making air foam
IPC: A62C5/00
Filed: 1934-04-23
Abstract: 418,357. Making foam. DYHR, J., 16, Hindenburgstrasse, Dresden, Germany. April 23, 1934, No. 12237. [Class 47 (ii).] Apparatus for making air foam comprises a pump 1 which is immersed in a tank of foamforming liquid and has suction inlets 4 and 9 for liquid and air respectively. The inlet 4 is adjustable by a sleeve valve 3 and is controlled by a ball valve 6, and the pipe 9 includes a check valve and regulating cock. The liquid and air are sub-divided into fine, intersecting streams by orifices 8 and 11, and the foam so formed is drawn through sieves 13. The foam is further refined by passage through fine holes formed in the plates 15 which secure the cup leathers 14, and finally passes to the discharge pipe 12 by way of fine holes 18 in the pump cylinder 1. The piston rod 17 is hollow and provided with ports 20 covered by sieves, whereby foam enters the rod at each stroke, compressing the air in the rod to assist in the discharge of the foam at the end of each stroke. The total free passages of the sieves and apertures should be at least as large as the liquid inlet, so that the pump can be used for projecting liquid alone, by closing the air inlet. In a modification, additional sieves for refining the foam are arranged in concentric passageways provided in the piston rod and in which the foam follows a sinuous path.
Patent GB-717318-A (GB)
Title: Improvements in or relating to devices such as screw nuts and tools for rotating them
IPC: B25B13/48
Filed: 1951-05-25
Abstract: 717,318. Pipe joints. TURNER, E. C. Aug. 22, 1952 [May 25, 1951], N: 12308/51. Class 99 (1). [Also in Groups XXIII and XXV] A union for two pipes comprises a male member 3 brazed or otherwise fixed tc the pipe 2 and a thimble 6 brazed or otherwise fixed tc the pipe 1, the member 3 being counterbored to receive a washer 5 and above it, the thimble 6. A flange 7 on the thimble is engaged by a flange 8 of a nut 9.
Patent GB-1509073-A (GB)
Title: Puffer-type gas circuit-interrupter
IPC: H01H33/91
Filed: 1975-03-25
Abstract: 1509073 Puffer circuit breaker WESTING- HOUSE ELECTRIC CORP 25 March 1975 [13 May 1974] 12310/75 Heading H1N An SF6 puffer-type circuit interrupter comprises a moving contact 151 carrying a nozzle 157 and gas-pressure cylinder 153 both of which are of insulating material to reduce risk of voltage breakdown through the nozzle. On circuit closing the moving contact abuts a stationary contact 150 and moves it a predetermined distance against the bias of a spring 179. When circuit interruption occurs the stationary contact returns to its previous opencircuit position before contact-parting commences so that the gas in the cylinder 153 will be precompressed as the cylinder moves over the piston 155 before arcing starts. The piston has one-way flap valves (Figs. 20-24, not shown). Both contacts are hollow for exhausting the arc gases. Motion of the moving contact assembly is accelerated by a lazy-tong arrangement 177 operated by a rod 173 extending through a bellows 170 into the interrupter casing 32. The moving contact is connected to the nozzle 157 via an apertured metallic cooling ring 56.
Patent GB-528325-A (GB)
Title: Improvements relating to control circuits for temperature responsive resistances
IPC: H01C7/04
Filed: 1939-04-25
Abstract: 528,325. Electric resistors. KOLSTERBRANDES, Ltd., and BEATTY, W. A. April 25, 1939, No. 12406. [Class 37] A temperature variable resistor has its temperature brought to a particular point on the working range, and current from an auxiliary source is supplied to it for causing the temperature to fluctuate about a mean value over the effective working range. The resistor 11, preferably of silver sulphide, is heated from a source 16, 17 supplying the heater 12 through condensers 18, 19. An auxiliary source 20, 21 is supplied through resistors 22, 23 having a high resistance compared with that of the heater, the effective temperature range being varied by varyin g the auxiliary current. In modifications the source 16, 17 can be a battery, or separate heaters can be supplied from the respective sources. Specification 519,746 is referred to.
Patent GB-474675-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F1/08
Filed: 1936-05-01
Abstract: 474,675. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. May 1, 1936, No. 12439. Convention date, July 26, 1935. [Class 40 (v)] In a thermionic valve amplifier tuned to a single fixed high-frequency, the anode to grid capacity of the valves and the natural inductive coupling between the supply conductors to the valve electrodes are made of such value that the equivalent anode-grid capacity is zero at the operating frequency. Selection of the anode-grid capacity is effected by choice of the screening between anode and grid and arrangement of the coupling between the supply conductors is effected by design of the circuit lay-out.
Patent GB-786769-A (GB)
Title: Improvements in or relating to tannage compositions and procedure
IPC: C14C3/04
Filed: 1955-04-29
Abstract: Double silicates of zirconium and alkali metals are produced by sintering natural or artificial zirconium minerals or materials, e.g. beccarite or zircon sand, with an alkali metal carbonate, e.g. sodium, potassium or lithium carbonate.  Specified compounds are Na2ZrSio5 and Na4Zr2Si3O12 but additional silica or zirconium oxide may be present.
Patent GB-118112-A (GB)
Title: Improvements in or relating to Gas Analysing Apparatus.
IPC: G01N7/04
Filed: 1918-07-31
Abstract: 118,112. Aktiebolaget Ingeniorsfirma F. Egnell. July 31, 1917, [Convention date]. Gas analysis. - In has analysis apparatus, a device is arranged in the piping for the gas or for the pressure medium which constricts the flow in one direction more than in the other. In the apparatus shown, the liquid rises and falls in the first measuring-vessel b under the action of a pumping apparatus c of the kind described in Specification 16561/08, and liquid-seals d, e, an absorption vessel g, an ascending pipe f, an inlet h for the gas to be analyzed, pipes i, i<1> for the pressure medium, and a pipe k by which the liquid has access to the pressure medium are provided. The constricting-device may consist of a ball t<1>, Fig. 6, under the action of a spring t<2> which constricts the passage between the pipes s<1> and s<2> for gas flowing in the direction of the arrows and allows a greater flow in the opposite direction; or a ball t' arranged in a branch v, Fig. 7, in association with an adjust. able flap valve y. The ball closes the branch v for gas flowing in the direction of the arrows so that the gas is constricted by the valve y, but opens the branch w for gas flowing in the opposite direction. In Figs. 1-5 the position of the constricting-device is indicated diagrammatically as a simple constriction in the pipes, and in the arrangement shown in Fig. 1 may be at a, a<1>, a<2>, a<3>, or a<4>. Figs. 2, 3, and 4 show other arrangements with the constriction in the vicinity of the first measuring-vessel. In the form shown in Fig. 5, liquid enters a closed vessel n by a pipe m and increases the pressure in the closed vessels n, p until the pipe r acts as a siphon and causes the descent of the liquid in the measuring-vessel b, sucking in gas through e. The constriction is arranged at a<5> on the siphon. The constricting- device may be detachable.
Patent GB-1496704-A (GB)
Title: Vehicles
IPC: E02F3/38
Filed: 1975-03-25
Abstract: 1496704 Excavators POCLAIN 25 March 1975 [19 April 1974] 12486/75 Heading E1F An excavator comprises a cross-member 10 pivotally connected to frame 1 by a parallelogram linkage 7, 9, 11 and 12, a slide 13 slidably mounted on the cross-member and a bucket arm 17 pivotally connected to the slide by a vertical pivot shaft 16.
Patent GB-935554-A (GB)
Title: Improvements in or relating to methods and devices for transporting workpieces
IPC: B23Q7/02
Filed: 1960-04-08
Abstract: 935,554. Gear-grinding; centres. P. L. GLOCKER, April 8, 1960 [April 10, 1959], No. 12504/60. Class 83 (3). A machine tool comprises a rotary table 1 to receive a number of workpieces, such as gear-blanks 3 and axially-movable workclamping means 5, 8 which receive a workpiece when the table is lowered, one of the clamping means passing through an aperture 4 in the table. The workpieces are loosely positioned by recesses 2 above the recesses 4. The upper clamp has a spring-pressed centre 50 and is moved downwardly by a fluid-pressure device 11 against spring means. A rod 13, also moved downwardly by the device 11, pushes the table 1 downwardly against a spring 15. The table is indexed by a ratchet device 18, 19 and the table is positioned precisely by a pin 32 entering one of a number of holes 34 in the table as it is lowered. Workpieces are fed to the recesses 2 by a pusher 39 from a vibrating hopper delivery means 41, 42. Finished workpieces are ejected by a pin 36 whenever the table is lowered, the pieces falling through a recess 35 in a tray 28. In operation, when a workpiece has been clamped, a grinding hob 43 is advanced to the work which is rotated in synchronism therewith. A fixed cutter 31 deburs the gears as they are cut. The workholders and clamping means may be exchangeable to accommodate different workpieces. A testing apparatus may be positioned before the ejecting station and faulty workpieces removed. The clamping means may be rotated into position instead of being moved axially. The clamping means 5 may be displaced upwardly instead of the table being moved downwardly.
Patent GB-524915-A (GB)
Title: Improvements in shaft and knob assemblies
IPC: G05G1/12
Filed: 1939-04-27
Abstract: 524,915. Securing knobs to shafts. BURGESS, A. F. (Globe-Union, Inc.). April 27, 1939, No. 12622. [Class 80 (ii)] A knob and shaft assembly for electrical apparatus and other appliances comprises a shaft split at one end and provided with a series of longitudinally extending splines adapted to co-operate with similar splines in a socket formed in the knob. The Figures show the invention applied to the volume control for a radio receiver. The hollow shaft 5 is formed from a sheet metal blank and at one end is provided with lugs 2 adapted, after being passed through slots in the movable contact 11, to be bent over to secure the contact rigidly to the shaft. The shaft is rotatably mounted in a bearing 10 and is held against endwise movement by a wire clip 12 having hooked ends 13 and an intermediate link 14 adapted to engage holes stamped in the blank. The blank at the other end is tapered so that when rolled up a slot 7 is left to permit the edges to move together when the splined end of the shaft is pressed into the socket which may be tapered. In a modification a second slot is formed opposite the slot 7 and the two parts of the shaft are slightly offset. In a form using a solid shaft the splined end which is pressed into a tapered splined socket is slotted and the outer edge bevelled, while the holes 3 are replaced by a circumferential groove engaged by a horse-shoe clip
Patent GB-919799-A (GB)
Title: Handles for bottles, tins and like containers
IPC: A47G23/02
Filed: 1961-04-07
Abstract: 919,799. Handling devices. LUNDE, T. April 7, 1961, No. 12623/61. Class 66. A handle of metallic or non-metallic material for a container 40, Fig. 1, or 72, Fig. 20, e.g. a a bottle or tin, to facilitate pouring of the contents comprises arms 46, 47, a ring 50 and a base plate 48, an upright part 45 and a hand grip 52, the ring being formed integral with the arm 46 and the upright part 45. The ring may be formed with a slit, Fig. 4 (not shown), for use with a bottle, or have a flange 77, Fig. 20, or tabs adapted to fit inside the rim of the container. The base plate may bear a flange or tabs 63 to hold the container in its fitted position. The device may be suspended by a nail 91.
Patent GB-1400976-A (GB)
Title: High-pressure mercury vapour discharge lamp
IPC: H01J61/20
Filed: 1973-03-16
Abstract: 1400976 Metal-vapour lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 March 1973 [20 March 1972] 12732/73 Heading H1D In a high-pressure mercury vapour discharge lamp having a discharge vessel whose wall is subjected during operation of the lamp to a power of between 10 and 100 W per sq. cm. the discharge vessel contains a rare gas as an ignition gas, at least one of the halogens I, Br or Cl, from 0À5 to 40 mg. of Hg (up to 50% by weight of which may be replaced by Cd per cc. of the internal volume of the discharge vessel, sufficient sodium halide that during operation of the lamp unevaporated sodium halide is present in the discharge vessel, a quantity of Tl which is from 0À25 to 25% by weight of the quantity of Hg, or of Hg plus Cd, a quantity of Ca which is from 1 to 30% by weight of the quantity of Hg, or of Hg plus Cd and optionally a quantity of In which is up to 15% by weight of the quantity of Hg, or of Hg plus Cd, the quantity of halogen expressed in chemical equivalents being at least equal to the total quantity of Na and Ca expressed in chemical equivalents and not more than twice the total quantity of Na, Ca, T1 and In expressed in chemical equivalents. The relevant halogen may be introduced into the lamp as one or more halides of the above mentioned elements. The halide is preferably the iodide, and the ignition gas may be A at a pressure of up to 20 torr. or a mixture of 99% Ne and 1% A at a pressure of up to 40 torr. The discharge tube may contain additionally one or more of the elements Sc, Y, La and the lanthanides in a quantity of between 0À1 to 40% by weight of the quantity of Hg or of Hg plus Cd, and Nd or Dy in a quantity of between 3 to 40%.