baber/WOPTO huggingface dataset:
Patent GB-684648-A (GB)
Title: Improvements in and relating to wave generators
IPC: H03K4/12
Filed: 1951-01-30
Abstract: 684,648. Sawtooth generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 30, 1951 [Feb. 10, 1950], No. 2325/51. Class 40 (vi). A sawtooth wave is generated by charging a storage device through a fixed impedance, a first variable resistance and a second variable resistance all in series and the second variable resistance is varied in response to the voltage across the storage device to maintain the voltage across the impedance and first variable resistance constant while the first variable resistance is varied in response to the current through the impedance to maintain the charging current constant. As shown, a capacitor 1 is charged from the H.T. source through a voltage regulator valve 5, a current regulator valve 4 and a resistor 3 in series and is periodically discharged through a thyratron 32 on the occurrence of a positive pulse on its grid. The voltage across the capacitor is applied to the grid of a cathode follower valve 8, the output of which is applied to the cathode of a further valve 15. The anode voltage of this valve is applied to the grid of valve 5 so that as the voltage across the capacitor rises the voltage or the grid of valve 5 rises, reducing the impedance of the valve and tending to maintain constant the voltage across resistor 3 and valve 4. If the H.T. voltage should suddenly rise the cathode potential of valves 5 and 15 rise, but the time constant of circuit 19, 38 is such that the control grid potential of valve 15 does not immediately follow. Accordingly, a very rapid correction takes place. The voltage across a resistor 3 is applied through a capacitor 29 to the suppressor grid of a valve 25, the output of which is D.C. coupled to the grid of valve 4 to maintain the charging current constant. The rate of rise of the sawtooth voltage is controlled by a device 39 which is periodically switched to adjust the charge on capacitor 29 and thus the mean suppressor grid voltage
Patent GB-431626-A (GB)
Title: Arc lamps with carbons at obtuse angles
IPC: H05B31/00
Filed: 1935-01-24
Abstract: 431,626. Arc lamps. KORTING & MATHIESEN AKT.-GES., Leutzsch, Leipsic, Germany. Jan. 24, 1935, No. 2346. Convention date, Jan. 27, 1934. [Class 39 (i)] In an arc lamp of the type in which the electrodes are arranged at an obtuse angle and are carried on pivoted arms the length of the arc is regulated by means of rods pivoted to the arms and furnished with racks &c. The Figure shows an arrangement in which the arms 2, 3 carrying the electrodes 8, 9 are connected by spur-wheels 4, 5 and furnished with pivoted racks 17, 18 gearing by a spur-wheel 12 operated from a shaft 14 through a chain 16 and sprockets. In a modification the racks 17, 18 engage with pawls operated by a solenoid in series with the arc.
Patent GB-469420-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J31/12
Filed: 1936-01-24
Abstract: 469,420. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BANKS, G. B. Jan. 24, 1936, No. 2357. [Class 39 (i)] The screen 4 is mounted transversely with respect to, and offset from, the axis OC of the electron gun and a magnetic field parallel to the screen 4 deflects the ray as shown so that, when it is deflected as to the positions OA and OB for scanning purposes in television, it traces on the screen 4 the same path as it would trace on a screen perpendicular to the axis OC in the absence of the magnetic field. This field may be uniform with a cross-section in the form of an isosceles right-angle triangle 6 having its hypotenuse at 45‹ to the axis OC, the screen 4 being parallel to this axis. The envelope is hammer-shaped with cylindrical parts 1, 2 at right-angles and the part 2 is coated with silver maintained at a fixed potential. The screen 4 is mounted at the end of the part 2 more remote from the axis OC and the other end is formed separately as an optical plate 5 or a lens through which a picture can be projected. The screen 4 may be a metal plate carrying a fluorescent layer or a photo-electric mosaic.
Patent GB-904002-A (GB)
Title: Improvements in reciprocating engines
IPC: F02B75/18
Filed: 1958-01-24
Abstract: 904,002. Engine constuction. BUNYAN, T.W. Dec. 15, 1958 [Jan. 24, 1958], No. 2427/58. Class 7(2) [Also in Group XXVI] A reciprocating engine comprises an inclined crank-pin 11, Fig. 3, a cylinder-piston unit 17, a transmission structure 23 mounted by bearings 25,26 on the inclined crank-pin, coupling means 20, including a coupling element 34, sliding between surfaces of guide members 22, Fig. 2, which prevent movements of the coupling element transverse to a plane containing the axes of the cylinder-piston unit and the crank-shaft 2 and flanges 21 secured to the coupling means, making sliding engagement with guide members 22 preventing movement in. that plane and normal to the axis of the cylinder piston unit, the connection between the coupling element 34 and the transmission structure 23 permitting relative movement which includes a linear component and a rocking component. In the arrangement described four cylinder-piston units drive two transmission structures arranged at 90 degrees apart in which one plain bearing 25, Fig. 4, on each transmission structure engages the crankpin 11 and the other plain bearing 26 engages a bearing surface on the outside of the plain bearing 25 of the other transmission structure. Each ball coupling element 34 contains a hole to receive an extension 28, 29. In modifications, the balls 34 may be replaced by cylindrical pins 35 which engage the guides 22 directly. The cylinder-piston units may be adjustable in position towards and away from the crank-shaft axis in order to vary the piston stroke.
Patent GB-1483323-A (GB)
Title: Method for producing a brick for sliding closure of vessel for holding molten metal
IPC: B22D11/10
Filed: 1976-01-22
Abstract: 1483323 Plate brick NIPPON KOKAN KK and TOKYO YOGYO KK 22 Jan 1976 [29 Jan 1975] 02447/76 Heading C1J A plate brick for a slide closure of a vessel for holding molten metal is characterized in that the brick is made by forming and subjecting to reducing-burning a mixture comprising an acid or neutral refractory (e.g. burnt clay, highly siliceous material, high aluminous material or high-zirconia material) as a base material; 2-20% of graphite; clay, tar or pitch or a mixture of tar and pitch as a binding agent; and optionally a sintering agent (e.g. silicon carbide or nitride, metallic silicon or ferrosilicon). The proportion of binding agent may be 2-30%, and of the sintering agent may be 1- 10%, of the total mixture. The burnt product may be impregnated with tar or pitch (or mixture thereof) and further subjected to reducing- burning to thereby completely remove the volatile constituents in the brick and to fill its pores with carbon.
Patent GB-659777-A (GB)
Title: Improved apparatus for sterilising surgical instruments and the like
IPC: A61L2/06
Filed: 1949-01-21
Abstract: 659,777. Sterilizers. FIGGIS, T. G. Jan. 21, 1949, No. 2609. [Class 81(i)] An apparatus for oil sterilizing surgical and dental instruments, and which is adapted for use with a sterilizer of the type comprising a tank having a perforated instrument tray dipping or adapted to dip into water placed in the tank so that instruments carried by the tray will be sterilized by the boiling water, comprises a container adapted to contain a small quantity of oil and to receive one or more instruments for sterilizing and to so position it or them as to have at least the operating part thereof immersed in the oil in the container, such container having means for mounting it on and attaching it to the said perforated tray in such a manner that it only partially dips into the water in the said tank when the tray is in its sterilizing position, and the said container having, at its upper part above the level of said water, an opening to give access, when desired, to the interior of the container so as to enable an instrument or instruments to be placed therein or removed therefrom but adapted, during sterilizing operations, to exclude from the interior of the container water and water vapour flowing around the container and heating the same. As shown, the container 7 is in the form of a long cylindrical tube closed at the bottom 8 and having an opening 9 at its upper end, which opening is horizontally disposed during sterilization. A cover 10 hinged at 11 to the upper end of the container 7 is provided to close the spring 9, so as to exclude steam and water vapour from theinterior of the container. A perforated plate 12 is fitted near the bottom 8. The body of the container is provided with a dependent socket 13 in a plane at right angles to the plane of the opening 9 and is adapted to engage a pin 14 detachably fitted to the perforated bottom 15 of a tray. 5 by means of a stud 17. The tray 5 is supported in a sterilizer 1 containing water 6 by means of a carrier grid 3, which is suspended from a lid 2 by limbs 4. Lateral movement of the container may be prevented by the provision of a pin 20 or clip 21.
Patent GB-1469211-A (GB)
Title: Apparatus for forming extruded tubular thermoplastics film
IPC: B29C48/90
Filed: 1975-01-21
Abstract: 1469211 Cooling extruded tubular film MOBIL OIL CORP 21 Jan 1975 2611/75 Headings B5A and B5B A tubular thermoplastics film 26 is formed by internal inflation, e.g. by air of a tube extruding from a die 14, and externally cooling the inflating tube by fluid, e.g. air at 20 to 100 C., discharged through apertures 43 in the surrounding surface of a housing 32, which is of increasing diameter in the direction away from the die 14. The apertures 43 are arranged in pairs of circumferentially extending rows 42a, 42b, and with the apertures of each row being directed in a direction away from those of the other row of the pair, and each towards an outlet passage 16 for the fluid from the housing, provided between adjacent pairs of aperture rows. The cooling fluid prevents adhesion of the tube to the housing surface, towards which the extruding tube is drawn by decreased pressures, both in the regions between each row of a pair of rows of apertures, and in the regions in which the fluid enters the passages 16. The apertures of the rows of a pair are directed away from each each at 50 to 160 C., and preferably 110 to 150 C., and the temperature and/or velocity of the fluid discharged from the rows may be in an ascending or descending gradient axially of the housing. Each pair of aperture rows is provided in one of a plurality of ring manifolds spaced apart axially to define the passages 16. The apertured housing surface is conical, or paraboloid, and diverges from the axis of the die outlet at an angle which is less than 48 degrees, preferably less than 38 degrees. The distance from the die outlet at which the extruding tube commences its diametral expansion, is preferably 5 to 15% of that to the frost line of the cooling tube. Die outlet widths are specified which are in excess of those which would be employed in processes not using the housing, e.g. in a ratio to the film thickness of more than 10 : 1, and preferably more than 15 : 1. The passages 16 may vent air to atmosphere, or other fluid to a closed reservoir system. The ratio of film to die outlet diameter is from 1À5 to 5, and the preferred film thickness is 0À01 to 0À25 mm. The internal inflating fluid is circulated through the die mandrel. The film may comprise various specified thermoplastics, and is flattened by guides prior to passage through nip rollers.
Patent GB-723441-A (GB)
Title: Improvements in or relating to moving conveyors
Inventor: JOWITT SAMUEL GEORGE
IPC: C03B35/08
Filed: 1952-02-01
Abstract: 723,441. Conveyers. SHEPPEE MOTOR & ENGINEERING CO., Ltd. Jan. 23, 1953 [Feb. 1, 1952], No. 2683/52. Class 78 (1). A transfer device, e.g. for hot bottles passing from one conveyer to another, comprises an endless duplex chain driven in timed relationchip with the first conveyer and carrying at least one retractable article-engaging finger, sams for positively retracting the finger, and other cams for bringing the finger into operative position. As shown, pivoted fingers 31 are carried on an endless duplex chain 25 driven by a sprocket 21 and tensioned by a spring-loaded sprocket 26. Hot bottles 40 are transferred from an endless belt or platform 41 to a further endless belt 43 by the fingers which are held in projected position during their operative stroke by a cam block 36 engaging a roller 33 on each finger. After transfer the fingers are positively retracted by a flange 38 acting on the rollers 33, flange 38 passing around sprocket 26 to hold the fingers in retracted position. Blocks 34 and 35 of asbestos or like heat-resistant material are secured respectively to the fingers and to the links of the chain.
Patent GB-450080-A (GB)
Title: Mounting cards for corn pads and the like
IPC: G09F5/04
Filed: 1936-01-29
Abstract: 450,080. Packages. SCHOLL MANUFACTURING CO., Ltd., 188, St. John Street, Clerkenwell, London.-(Scholl, W. M. ; Chicago, U.S.A.) Jan. 29, 1936, No. 2694. [Class 94 (i)] A mounting-card for corn pads, bunion pads, and like articles having a central aperture or recess comprises a flat card 8 having cuts 9 of approximately the contour of the internal aperture in the pad 5, and which form tabs 11 which can be pressed into frictional engagment with the inner walls 12 of the recess 6 as shown in Fig. 4. Pads having an adhesive surface are mounted with the adhesive surface 7 towards the card, and the tabs 11 are arranged to grip the pad in front of the adhesive layer. The card is arranged to accommodate a number of pads and is of sufficient rigidity to be used for display purposes. Lines of perforation 13 are arranged between the pads to facilitate removal of single pad which is then suitably protected for carrying.
Patent GB-635390-A (GB)
Title: Improvements in tractor radiator grilles
IPC: B60R19/52
Filed: 1948-01-29
Abstract: 635,390. Road vehicles. FORD MOTOR CO., Ltd. Jan. 29, 1948, No. 2713. Convention date, May 27, 1947. [Class 108 (i)] A tractor having an engine 11 and a radiator 12 has a sheet metal hood 16 extending over these parts and side panels 18 extending downwardly from the hood 16 to form a rectangular opening which is covered by a grille 19 pivoted along one edge to permit access to the radiator 12.
Patent GB-371474-A (GB)
Title: Age resisting rubber compounds
IPC: C08K5/375
Filed: 1931-01-28
Abstract: Dihydroxydiaryl sulphides in which the arylene radicals do not contain substituents having acidic or basic functions, are employed as antioxidants for rubber which is to be vulcanized cold.  Specified compounds are 4-41-dihydroxydiphenyl sulphide, 4-41-dihydroxy, 3-31-dichlorodiphenyl sulphide, 4-41-dihydroxy, 3-31-dimethyl diphenyl sulphide.  The invention is particularly directed to the production of proofed fabrics.  Specification 359,045 is referred to.
Patent GB-1091841-A (GB)
Title: Improvements in or relating to moulds for moulding soles for footwear
Inventor: CRANE MICHAEL LEWIS
IPC: B29D35/00
Filed: 1965-01-22
Abstract: A polyvinyl chloride shoe sole is made in a mould comprising interlocking rear and fore parts separable along a transverse line such that different rear parts may be added to the fore part to provide different types of rear end portions of the sole (Figs. 8, 10).  The depths of the mould cavities in each part decrease at the lateral edges thereof to enable left hand and right hand soles to be produced by appropriately bending the sole (Figs. 11, 12). In a modification the mould comprises three interlocking parts, i.e. a fore part, a rear part, with a waist part therebetween.  In both embodiments the rear end part may form a heel (27) integral with a sole portion (28).
Patent GB-620895-A (GB)
Title: Improvements in or relating to apparatus suitable for use in treating soles in the manufacture of shoes
IPC: A43D11/14
Filed: 1947-01-30
Abstract: 620,895. Apparatus for treating soles. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Jan. 30, 1947, No. 2852. [Class 17 (i)] Apparatus for activating cement on soles by exposing them to an atmosphere of hot air and water vapour, as described in Specifications 567,076 and 582,698, is characterised by improved means for feeding the soles into and removing them from the treatment chamber while minimising the ingress of cold air to the chamber, for superheating the vapour-laden air before it enters the chamber, and for controlling the temperature and relative humidity of the atmosphere in the chamber. Soles are supported in the chamber 12 by a plurality of carriers 84 each of which is connected by a link 86 to a lever 90 which cooperates with a respective cam 92 on a shaft 94. The latter is driven by a motor 32 acting through a belt 34, a shaft 110, and a clutch so arranged that it can be engaged by operation of a treadle 148 and is automatically disengaged when the shaft 110 has made one revolution, i.e. when one cam 92 has operated on its respective lever 90 to move its carrier out of the chamber for unloading and loading while an adjacent cam has allowed its carrier to return under spring action into the chamber. The front of the chamber is provided with a series of narrow, spring-closed doors corresponding to the several carriers which are opened by the carriers as the latter move outwardly, and re-close automatically. Compressed air is forced through water which is heated in a tank 16 equipped with an electric heater and a thermostat. The vapour-laden air passes by a pipe 44 to a superheater 46 at the bottom of the chamber 12 and thence into the chamber through perforated pipes 64. The superheater consists of a block 48, Fig. 6, with sinuous passages 50, 51 in its lower and upper surfaces and enclosed by cover plates 52, 54. An electric heater and a thermostat are embodied in the block: A further electric heater and thermostat are provided in the upper end of the chamber 12 further to control the condition of the atmosphere therein. Specification 484,812 also is referred to.
Patent GB-548386-A (GB)
Title: Improvements in or relating to retractable undercarriages for aircraft
IPC: B64C25/22
Filed: 1941-03-03
Abstract: 548,386. Hydraulic jacks for aircraft undercarriages. RUBERY OWEN MESSIER, Ltd., and CONWAY, H. G. March 3, 1941, No. 2889. [Class 69 (ii)] [Also in Group XXXIII] A hydraulically operated jack for a retractable aircraft undercarriage is provided with a latch, carried by the piston, co-operating with an abutment in the cylinder when the jack is retracted, and with a locking-member for engaging the latch to hold it locked to the abutment, the locking-member being connected to a piston in a cylinder, distinct from the jack cylinder, to which pressure fluid can be admitted to move the locking-member to release the latch, the normal working pressure in the jack cylinder being insufficient to move the locking member. The locking means comprises a series of spring arms 21 formed by slitting a cup-shaped member secured to the piston of the jack by a nut 18. At the end of the piston stroke the tapered enlarged ends 22 of the arms engage the upper end of a flanged steel ring 17, secured within the upper end of the jack cylinder by a screwed extension 16. A disc 25 connected to a piston 29 in a separate cylinder and acted upon by a spring 30 is displaced by the ends of the arms 21 as they rise, the disc returning to engage behind the arms as they spring outwards to engage the ring 17. To release the lock, pressure fluid from a hand pump 50 is admitted to a space 28 beneath the piston 29. For controlling the jack a pump 33 delivers pressure fluid to a valve bore 35 having two valves 38, 43 opened alternatively by a hand lever 37. When the valve 38 is open pressure fluid flows through conduits 40, 42 to raise the jack piston and simultaneously a piston 45 in a cylinder 41 is raised to open a valve 46 permitting fluid to flow from the upper end of the jack to an accumulator 48. The pressure in the accumulator is sufficient to lower the jack after the valve 43 has been opened to permit fluid to flow from the lower end of the jack to the pump reservoir 34 but it is insufficient to raise the locking disc 25. Should the accumulator 48 be damaged a valve 53 is opened and the hand pump 50 may be used to supply pressure fluid through two non-return valves 56, 54 to the upper end of the jack cylinder. Alternatively the pump 33 may be used, the higher pressure being sufficient to raise the disc 25 against the action of the spring 30. In either case the valve 46 closes to shut off the accumulator. Specification 425,207 is referred to in the Provisional Specification, and Specifications 458,005, [Group XXXIII], 468,196 and 514,051, [Group XXXIII], also are referred to. Reference has been directed by the Comptroller to Specification 551,673, [Group XXXIII].
Patent GB-192279-A (GB)
Title: Improvements relating to the construction of concrete floors
IPC: E04B5/06
Filed: 1922-02-01
Abstract: 192,279. Gibbings, W. W. Feb. 1, 1922. Floors of reinforced-concrete girders side by side; joist floors with slab filling.-A floor of the type formed by placing reinforced concrete beams or slabs side by side on walls or joists, has channel-shaped members 2, made of expanded or perforated metal, placed in the bottoms of the spaces between the beams, to hold the cement 3 and form a key for the ceiling plaster 4. The members 2 may be sprung into place, or be supported at intervals by slings 5, and the bottoms only of the members 2 may be reticulated.
Patent GB-113493-A (GB)
Title: Improvements in or relating to Fertilisers.
Inventor: BORGHESANI GUIDO ARMANDO RENAT
IPC: C05B13/02
Filed: 1917-02-27
Abstract: 113,493. Borghesani, G. A. R., and Stampa, G. Feb. 27, 1917. Manures.-A manure in which the phosphate and potash are soluble in citric acid is obtained by heating together to a high temperature a mixture of phosphate rock and potash bearing rock such as leucite together with a small proportion of nitre cake, and if desired pyrites ash. The reaction mixture is fused, a temperature of 1200- 1400‹ C. being mentioned, which may be obtained by means of an electric furnace. The fused mass discharged from the furnace may be cooled by sprinkling water upon it in such quantity as will evaporate, leaving a dry product.
Patent GB-354268-A (GB)
Title: Automatic adjusting device for transmission of stresses of any nature, and particularly for brakes
IPC: F16D65/58
Filed: 1930-01-28
Abstract: 354,268. Brakes. LAVAUD, D. S. DE, 179, Rue de la Pompe, Paris. Jan. 28, 1930, No. 2927. Convention date, Jan. 30, 1929. Void [Published under Sect. 91 of the Acts]. [Class 103 (i).] A device for automatically adjusting the distance between two parts of a transmission system when the stroke of the system exceeds a predetermined value, applicable particularly for compensating for wear in brake mechanism comprises a cam, eccentric or a screw and nut co-operating with a ratchet and pawl whereby the cam &c. is rotated on the return stroke if the initial stroke exceeds the predetermined value. The brake shown in Fig. 1 comprises brake shoes 1, 2 adapted to be applied to a drum 3 by pistons 10, 11 actuated by pressure fluid admitted to chambers 5, 6 and acting upon rubber caps 8, 9. The pressure is transmitted to the shoes through cams 12, 13 pivoted on the pistons and provided with ratchets 16, 17 engaged by pawls 18, 19. If when the brake is applied the stroke of the pistons exceeds a certain value, the ratchet teeth slip over the pawls and on the return movement the cams are rotated theieby. In Fig. 2, a nut 12 rotatable on the pull-rod 11 screws on a member 2 secured to the pull-rod 11<1>. The nut 12 has ratchet teeth 17 engaged by a pawl 18 carried by a sleeve 20 provided with a quick-pitch screw thread engaging a corresponding fixed nut member 22. During the operative stroke of the pull-rod 11, 11<1>, the sleeve 20 and the pawl are rotated and if the stroke is sufficient, the pawl slips a tooth of the ratchet so that on the return movement the ratchet and nut 12 are turned.