baber/WOPTO huggingface dataset:
Patent GB-391477-A (GB)
Title: Improvements in and relating to electric converting apparatus
IPC: H02M7/44
Filed: 1931-10-16
Abstract: 391,477. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Sabbah, C. A. ; 1, Washington Avenue, Schenectady, New York, U.S.A.) Oct. 16, 1931, No. 28849. Convention date, Oct. 16, 1930. [Class 38 (ii).] In a series type inverter one of the valves is maintained non-conductive for a predetermined interval upon starting of the apparatus. Connected across the D.C. supply in series with resistances 23, 25 and a biassing battery 24 is a glow tube 26 shunted by a condenser 27. The grid of valve 13 is connected to the junction between the resistance 23 and the glow tube 26 so that when the D.C. supply is unenergized a negative bias is applied to the grid. When the D.C. supply is switched on, the glow tube remains non-conductive until the condenser 27 has charged by current flow through the resistances 25, 23. When the tube becomes conductive the increased current flow from the supply through the resistance 23 will cause a potential drop sufficient to neutralize the negative bias applied by the battery 24. The circuit is designed so that the tube will break down just before the completion of the first half cycle of the A.C. output. If the D.C. supply voltage drops an appreciable amount the glow tube will become non-conductive and the negative bias will become effective,to stop operation of the inverter.
Patent GB-1294059-A (GB)
Title: Height gauge comprising a counter and a dial gauge
Inventor: NUMATA YEHAN
IPC: G01B3/00
Filed: 1971-06-21
Abstract: 1294059 Height Gauge Y NUMATA 21 June 1971 [30 Dec 1970] 28941/71 Heading G1M A height gauge comprises a pair of vertical posts 2, 3 each having a rack 4, 5 respectively, a slider, a first pinion 14 meshing with rack 4 and operating a dial gauge 31, and a second pinion meshing with rack 5 and operating a counter 10 Fig.3 (not shown). Pinion 14 is connected to gear 15 by a shaft, and gear 15 drives dial gauge pinion 30. Pinion 30 also meshes with gear 23 which is coupled to a pinion 22 meshing with rack 4 by a hair spring 25 which prevents backlash. Pinion 16 drives the drive pinion 21 of counter 10 via gears 17,19,18 and 20. The shaft 34 which carries pinion 16 also carries a hand wheel 27 for moving the slider along the posts. A lever 29 Fig.3  (not shown) is provided for returning the counter to zero at any position of the slider, and the dial gauge is rotatable to allow its zero to be adjusted. A spring 11 maintains the slider in firm contact with the posts and a screw 13 allows the slider to be locked in any position. Bellows 7 and 7<SP>1</SP> protect the racks and slider mechanisms from dirt.
Patent GB-892793-A (GB)
Title: Improvements in twist crimping machines for textile yarns
Inventor: SCRAGG FREDERICK
IPC: D02G1/02
Filed: 1959-08-25
Abstract: 892,793. Crimping threads and controlling tension therein. SCRAGG & SONS Ltd., ERNEST. Aug. 9, 1960 [Aug. 25, 1959], No. 28980/59. Classes 120(2) and 120(3) Yarn is continuously crimped by successive passage through a positive input feeder, a heater, a false-twister and a positive output feeder which is automatically controllable, as regards yarn throughout speed relative to the input feeder responsive to the momentary length of the yarn path between the feeders, to tend to maintain such length constant. As shown, yarn 11 passes through nip rollers 12, 13, over a heater 14, through a false-twister 15, guides 21, 22 and tapered nip rollers 16, 17, to a hole in a suction pipe 18, which holds the yarn during thread-up and until normal twist conditions have developed in the running yarn, and/or to a take-up spool 19. Change in length of yarn between pairs of nip rollers causes or permits pivotal movement of lever 23 against or under the restoring action of a spring 25 to position correctively the nip point of the yarn along the rollers 16, 17.
Patent GB-710666-A (GB)
Title: Improvements in or relating to amplitude modulated carrier wave transmitters
IPC: H03C1/06
Filed: 1951-12-11
Abstract: 710,666. Modulating systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 11, 1951 [Dec. 11, 1950], No. 29026/51. Class 40 (5) In an amplitude-modulated radio transmitter wherein negative feedback is used for the reduction of distortion, the modulated waves from the output stage are de-modulated and are mixed with the modulating signal reversed in phase, the resultant being fed back in reversed phase to re-modulate the transmitter. As shown in Fig. 1, the carrier source 1 is coupled through amplifier 2 and modulators 3, 4 to the transmitting aerial, and the modulating source 5 is coupled through an amplifier 6 to a transformer 7 whose secondary coil is: in the anode circuits of the modulating stages 3, 4. The output wave is fed to a de-modulator 9; and the detected signal amplified at 10, is mixed differentially at 11 with the modulating signal from 5 fed through a phase-adjuster 13 and amplifier 14. The adjuster 13 simulates as regards phase shift, the effect of the amplifier 6 and transformer 7 in the modulating channel. The output from the mixer, which comprises only distortion components, is amplified at 12 and applied to the grids of one or both of the valves 3, 4 to modulate the carrier in negative sense so as to balance out or reduce distortion in the radiated wave. In Fig. 3, the distortion components from amplifier 12 are fed to the grid of a triode valve 19 shunted across a resistor 20 which is connected in series with a low resistance 21 in the grid-cathode circuit of the final push-pull stage 22 of the transmitter. The valve 19 operates as a cathode-follower, and modulates the grid voltage of the valves 22. A further cathode-follower stage may be inserted between the amplifier 12 and the valve 19. For high radio frequencies, the valves 22 may be arranged' to operate as grounded-grid amplifiers. In another modification, Fig. 2 (not shown), the amplifier 12 is connected as a varying shunt resistance to the anode supply circuit of the h.f. stage 3. The voltage at the output of the mixer 11 may be used to measure the noise and disturbance level for monitoring purposes.
Patent GB-1303565-A (GB)
IPC: B65G49/06
Filed: 1971-06-21
Abstract: 1303565 Packing glass sheets; reciprocating conveyers EMMABODA GLASVERK AB 21 June 1971 [22 June 1970] 29055/71 Headings B8A B8C B8H and B8R A machine for packing glass sheets in a crate 40 comprises a pair of carriages 4, 5 each having a suction head 16-18 as disclosed in Specification 1,303,564 and movable to transfer a glass sheet from a pile 25 into the crate 40. The sheets may be disposed vertically in the pile, as shown, or horizontally. Air jets 30 assist in separating the outermost sheet from the rest of the pile. The carriages 4 and 5 are reciprocated on upper and lower rails 2 and (3) respectively by an endless chain 8 driven by a pneumatic cylinder and piston unit 6. The carriage 4 carries a roll 42 of paper which is arranged to be interleaved between the sheets in the crate. A brake shoe (49) on the roll holder is actuated by a stationary lever.
Patent GB-817132-A (GB)
Title: Process for the purification of solid polymers of mono-olefinic hydrocarbons
IPC: C08F6/02
Filed: 1955-10-13
Abstract: Normally gaseous mono - olefinic hydrocarbons, e.g. ethylene, polymerized in the presence of a catalyst comprising a mixture of an aluminium alkyl halide and a compound of a metal of sub-groups A of Groups IV to VI of the Periodic Table are reduced in ash content by treating first with steam and then simultaneously with a normally liquid aliphatic alcohol and hydrogen chloride, followed by neutralization.  The polymers are prepared in a liquid reaction medium, e.g. a saturated aliphatic hydrocarbon mixture, and are separated therefrom by the treatment with steam and are preferably in powder or granular form.  The treatment with the alcohol which is preferably water-soluble, e.g. ethyl or isopropyl alcohol, may be at a temperature not above 100 DEG  C., preferably between 60 DEG  and 80 DEG  C., in an extraction apparatus or a stirring vessel or in a circulating apparatus while a current of hydrogen chloride is introduced, or a mixture of alcohol or concentrated hydrochloric acid may be used.  In an example, ethylene is poly merized below 80 DEG C. with an equimolecular mixture of a titanium tetrachloride and aluminium diethyl monochloride in a liquid reaction medium comprising an oxygen-free substantially saturated aliphatic C8-C10 hydrocarbon fraction. The polymer is filtered and treated with steam to yield a fine-grained product of a molecular weight of 65,000 which is treated with 96 or 50 per cent ethyl alcohol saturated with hydrogen chloride, or extracted with 96 per cent isopropyl alcohol in a Soxhlet apparatus into which hydrogen chloride is introduced. The products are washed with water and dried to yield products with ash contents of 0.01 and 0.02 per cent.  Specifications 804,072 and 808,361 are referred to.
Patent GB-1002404-A (GB)
Title: Silica-alumina type spherical hydrogels
IPC: B01J21/12
Filed: 1963-07-23
Abstract: 1,002,404. Forming spherical hydrogels by extrusion. MIZUSAWA KAGAKU KOGYO KABUSHIKI KAISHA. July 23, 1963 [Feb. 21, 1963], No. 29177/63. Heading B5A. [Also in Division B1] Spherical silica-alumina hydrogels are prepared by extruding a mixture of (A) a hydrosol containing a basic aluminium sulphate of composition Al 2 O 3 1À6-0À8SO 3 , wherein 4 to 20 grams of Al 2 O 3  are contained in 100 c.c. of hydrosol, and (B) a hydrosol of silica having a pH of 0À5 to 4À0 containing 1 to 20 grams SiO 2  per 100 c.c. of hydrosol, said Al 2 O 3  and SiO 2  being contained in a proportion by weight of (100-1À2)A+(0-98À8)B, directly through orifices into the bottom of an organic liquid of greater specific gravity than and immiscible with the hydrosol mixture, whilst cooling the organic liquid in the environs of the orifices to a maximum of 30‹ C. and preferably to below 20‹ C. while heating at least the upper part of the organic liquid to 40‹ to 100‹ C., thereby gelling the surfaces of the spherical hydrosols during their rise to the surface, and thereafter holding the spherical gels in the heated organic liquid for from 2 to 90 minutes. The hydrosol mixture is fed from a storage vessel 1, Fig. 1A, via a pipe 2 and regulating valve 3 to an extruder head 4 to be extruded through tubes 7 aligned with holes in the base plate 9 of a tower 10 containing the organic liquid 11. The latter is supplied partly from a cooler 30 via a pipe 31 and said holes to cool the hydrosol as it is extruded, and partly from a heater 25 to the upper portion of the tower 10 via pipe 26, pump 27 and pipe 26<SP>1</SP>. The spherical hydrogels are carried through a passage 16 in the upper end of the tower 10 into a surrounding chamber 12 containing vanes 13, Fig. 2, carried by arms 13<SP>1</SP> extending from a shaft which is rotated at a rate of one revolution per 2 to 90 minutes so that the hydrogels are retained in the organic liquid for said period before being discharged through a conduit on to a permeable conveyer 20 to be passed to a storage vessel (not shown) by a shoot 24. The separated organic liquid passes through a hopper 22 to the heater 25 and the cooler 30. Other embodiments include the modifications that (a) the lower and upper portions of the tower 10 are provided with cooling and heating jackets, respectively, (b) the extrusion orifices are formed in a top plate of the extruder head 4 and the latter is surrounded by a cooling coil within the tower 10, (c) the feed pipe for the extruder head is surrounded by a cooling jacket, and (d) the chamber 12 is disposed eccentrically of the tower 10.
Patent GB-1093131-A (GB)
Title: Stabilised telescope
Inventor: RITCHIE DAVID SCARTH
IPC: G02B27/64
Filed: 1963-07-24
Abstract: 1,093,131. Telescopes. BARR & STROUD Ltd. July 15, 1964 [July 24, 1963], No.29253/63. Heading G2J. An optical telescope instrument comprises an objective lens system 2, an eyepiece lens system 3 and a gyro-stabilized means having at least one reflecting surface positioned so that where d is the distance, along the optical axis, between said surface and the focal point of the objective lens system, and f 1  and f 2  are the focal lengths of the objective and eyepiece lens systems respectively. In the embodiment shown in Fig. 1 in which a rotor 6 is mounted in a pair of gimbals 8, 9, the three axes being parallel to the line of sight, the pitch axis and the yaw axis respectively, a plane mirror 4 is secured to the inner gimbal 8. This mirror 4 is positioned so that where i is the angle of incidence of the optical axis on the mirror surface. A collimation mark may be viewed in superposition on a distant object by means of a semi-reflector 10 which directs an image of the mark displayed on a cathode ray tube towards the objective lens system 2. In the embodiment of Figs. 3, 4 (not shown) the stabilizing means is incorporated into a binocular instrument. For each eye is provided an objective (15), three prisms (16), (17) and (18) and an eyepiece (19). The two sets of prisms are mounted on the inner gimbal of a gyroscope. For optimum correction of the instrument, the mean distance D measured along the optical axis between the reflecting surfaces of the prisms and the focal point of the objective (15) is D =f1-f2/2
Patent GB-666393-A (GB)
Title: Improvements in or relating to the preparation of aerosols
IPC: B05B7/00
Filed: 1946-10-01
Abstract: 666,393. Respiratory appliances; medicinal aerosols. SOC. POUR LA MISE EN VALEUR DES BREVETS ET PROCEDES D'AEROSOLATION DU DOCTEUR DAUTREBANDE EURATMOS. Oct. 1, 1946 [Oct. 5, 1945 ; Oct. 23, 1945; Feb. 15, 1946; April 13, 1946], Nos. 29292/46, 29293/46, 29294/46 and 29295/46. Classes 81 (i) and 81 (ii). [Also in Groups XII and XXIX] Aerosols defined as a colloidal dispersion in a gas of liquid particles of average size less than one micron are obtained by passing in a direction other than downwardly a cloud of stable and unstable particles produced from an atomized spray generated by passing gas under pressure over an orifice at the end of a tube dipping into liquid along a path including a surface on which by control of the kinetic energy of the spray and the distance of the nozzle a turbulent continuous liquid layer is formed which retains the unstable particles. This layer may be built up on a gauze 22 above a nozzle 21; supplementary gauzes 24, 25, may be provided. The dispersion may be stored in a Woolf flask before administration through a mask or inhaler. Another construetion provides a whirling spray from e.g. twelve nozzles 37 circumferentially mounted round a rotary plate 40 within a chamber 33' and caused to rotate by expansion of the compressed air delivered through a tube 34 to the nozzles. The layering gauze may comprise a curved internally vaned member 56 balanced by a knife edge 68 on a collar round the shaft 41 of the nozzle rotor and caused to rotate by the action of compressed air on paddles 57. In another form the film surface comprises a rough surfaced inverted cone located over the spray nozzle at the top of a surrounding tube. Or the film may be built up on the inclined inner wall of the exit tube from the spray nozzle chamber, the mist afterwards penetrating the narrow channel between this wall and a glass block inserted in the tube, and after passage through a gauze being discharged below the surface of liquid in a vessel. A nozzle assembly, Fig. 9, comprising liquid supply tubes 5 grouped round a compressed air tube 3 has an opposed air nozzle 99 with a cup 100 on which a film is formed, the mist escaping through a perforated helix 13 in the outlet tube, and after release below the surface of liquid in a vessel 15, being finally discharged through separators 101-103 in which unstable particles are precipitated, and which may contain electrical resistances. In a further modification three stages of separation of unstable particles are provided by a closed-ended tube. The Specification as open to inspection under Sect. 91 comprises also an embodiment similar to that of Fig. 9 but without the film-forming cap 100, and a construction in which the ejector nozzle is immersed in liquid. This subject-matter does not appear in the Specification as accepted.
Patent GB-293047-A (GB)
IPC: G03C7/14
Abstract: 293,047. Soc. Civile pour l'Etude de la Photographie et de la CinÚmatographie en Couleurs. June 30, 1927, [Convention date]. Three-colour systems.-In colour photography and kinematography utilizing films having refractive elements, in the examples described, cylindrical in form, a large aperture objective O is used without any colour-selecting device near to the objective. The colour-selecting device is placed in the front focal plane of the objective O and consists of a three colour screen B V R in a circular opaque plate, or of a dispersive prism which does not deflect the central portion of the spectrum. In the case of a prism of small dispersion a screen having linear slots is placed near the prism and a screen with wider spaced slots is placed behind the objective. If the prism has a large dispersion a single screen having one slot is used near the prism.
Patent GB-1261049-A (GB)
Title: Production of sulphur trioxide
IPC: C01B17/77
Filed: 1969-06-10
Abstract: 1,261,049. Sulphur trioxide. BADISCHE ANILIN- & SODA FABRIK A.G. 10 June, 1969 [11 June, 1968], No. 29320/69. Heading C1A. Sulphur trioxide is produced from elementary sulphur or materials containing sulphur whose combustion products are gaseous in a bed comprising a catalyst for the reaction of sulphur dioxide to sulphur trioxide, the bed being fluidized by means of oxygen or a gas containing free oxygen in excess of the amount stoichiometrically required for the conversion of starting material to sulphur trioxide, wherein the temperature of the bed, which is determinative of the conversion of sulphur dioxide to sulphur trioxide, is controlled by indirect cooling and maintained so that it does not fall below the ignition temperature of the catalyst throughout the process. The fluidized bed is maintained at from 5-30‹ C. above the ignition temperature of the catalyst composition. In one embodiment of the invention the temperature of the fluidized bed may be raised and the amount of catalyst decreased so that only 90-92% of the sulphur dioxide is converted into sulphur trioxide, and the gas thus obtained, after cooling or absorption of SO 3 , subsequently reacted in a fixed or fluidized bed comprising catalyst for the reaction of SO 2 #SO 3  In this way the residual unconverted sulphur dioxide from the first operation can be converted to sulphur trioxide. Suitable catalysts are vanadium compositions. The excess heat of reaction in the bed is removed by cooling elements and used for the production of steam.
Patent GB-642382-A (GB)
Title: Improvements in or relating to scaffolding
Inventor: HAWES ALBERT HENRY
IPC: E04G7/30
Filed: 1947-11-03
Abstract: 642,382. Scaffolding &c. KWIKFORM, Ltd. Nov. 4, 1947, No. 29355. [Class 20(ii)] A scaffold clamp is permanently secured as by welding a plate 15 to a scaffold tube 11 and carries a screw 17 having a pressure plate 19 engaging another scaffold tube 12. The plate 19 is forked at 20 to engage the plate 15 to prevent rotation and may be mounted by means of a ball joint. A guard rail is shown mounted on supports spigoted to the tops of the scaffold uprights. Specifications 570,678, 574,457 and 642,367 are referred to.
Patent GB-804566-A (GB)
Title: Improvements in dolls
IPC: A63H3/46
Filed: 1956-09-26
Abstract: 804,566. Dolls. GREINER & HAUSSER G.m.b.H. Sept. 26, 1956 [Sept. 27, 1955], No. 29425/56. Class 132(3) The legs of a doll are movable and, where they join the doll body a, each is provided with a concave surface f adjacent to a surface d, the two surfaces being complementary to two surfaces g, b formed on the body of the doll. In Fig. 4, the leg portion c is made of resilient material e,g. P.V.C., and includes a member k which may have a flange m to act as a friction member on the inner wall of the body of the doll. The member k retains the leg against the body surfaces g, b and, together with the leg surfaces d, f, acts as a friction member for causing the leg to remain in a set position. Fig. 5 shows a separate member i for engagement in apertures in the top of the leg and in the body. In a further construction the top of each leg may have a spherically shaped projection which fits into a corresponding aperture in the body, and a strand of rubber connects the two projections.
Patent GB-1107563-A (GB)
Title: Broach
IPC: B23D41/04
Filed: 1965-03-16
Abstract: 1,107,563. Broaching. NATIONAL BROACH & MACHINE CO. 16 March, 1965 [28 May, 1964], No. 29452/66. Divided out of 1,107,562. Heading B3L. A broach assembly for broaching externally plain or helically toothed members comprises a stack of toothed rings 80 having cylindrical outer surfaces, a pair of channel-shaped members 64, 66 engaging the peripheries of all the rings, and keying means 88 to maintain alignment between the rings. The members 64, 66 are secured to a plate 92 which can be adjusted by a small amount angularly or laterally by screws 100, 102, 104, 106.
Patent GB-1038357-A (GB)
Title: Improvements in oxygen jet cutting machines
Inventor: REDMAN DEREK HARRY
IPC: B23K7/00
Filed: 1964-07-20
Abstract: 1,038,357. Cutting by fusion.- HANCOCK & CO. (ENGINEERS) Ltd. June 3, 1965 [July 20, 1964], No. 29478/64. Heading B3V. [Also in Divisions G1 and G3] An oxygen jet cutting machine comprises two follower heads mounted on a transverse beam for simultaneous longitudinal movement and independent transverse movement for following separate outlines. The beam is fed longitudinally at a constant speed determined by a potentiometer setting. One head 12 provides steering signals that are fed through an amplifier 17 to a steering motor 18. The motor rotates or steers the head, drives a tacho-generator 19 whose output is fed into the amplifier to prevent hunting, and also drives the rotor of a syndro-resolver 20. The resolver includes a fixed winding 21 energized by an adjustable voltage and further windings 22 and 23 at right angles to each other. The X 1  output is fed to an amplifier 35 and motor 36 to drive the had 12 in the X direction (i.e. transversely), a tacho-generator 37 providing a velocity damping signal to the amplifier 35. The circuitry for the second head 13 is entirely analogous to that of head 12. The Y 1  or Y 2  output of either head may be used to control the longitudinal transverse of that head, when the other head is unused.
Patent GB-679705-A (GB)
Title: Improvements in titanium alloys
IPC: C22C14/00
Filed: 1950-12-01
Abstract: A titamum-base alloy has the following composition:-Al 0.1-30.0 per cent, Cr 0.1-30.0 per cent, Ti, and impurities, the remainder.  The alloys may be made by vacuum or by mixing the powdered constituants, compacting pressure and sintering in vacus.  An alloy of 3 per cent Al, 5 per cent Cr, remainder Ti and impurities may be made by mixing the powdered constituents, compressing at about 30 tons per sqpare inch, sintering in vacuo for about 1 hour at 1200 DEG C and hot working in the absence of air until the full density of the alloy is obtained.