baber/WOPTO huggingface dataset:
Patent GB-837585-A (GB)
Title: Process and apparatus for chemical reactions
IPC: B01F27/71
Filed: 1958-04-01
Abstract: In exothermic reactions, e.g. neutralizing sulphonic acids, the mixed reaction product is recycled back to the reaction zone where it is mixed in a confined space with one reactant, and then, after agitations, with the second reactant.  A suitable reactor consists of an outer closed shell 10, Fig. 2, to which a circulating tube 17 is concentrically mounted, leaving a free space at each end. Two impellers 19, 20 are mounted on a rotatable shaft 21 within the circulating tube, and the reacting liquids are separately fed, one through inlet 24, which discharges between the impellers, and the other through inlet 25 before them.  In operation, a part of the final reaction product enters opening 15 and flows around the outer zone between the casing 10 and circulating tube 17, which it then enters and is mixed with the <PICT:0837585/III/1> first reactant (caustic soda) entering inlet 25; after thorough mixing by the impeller 20, the second reactant (sulphonic acid) is added through inlets 24, and the mixture circulates around the inner tube to exit 16.  Preferably, caustic soda is in substantial excess over the sulphonic acid to prevent acid decomposition of the reaction product by the heat generated.  The reactor is maintained filled with liquid, and is under pressure.  The reaction product leaving exit 16 is mixed with added water, and passes to an evacuated still where volatiles are removed, and the reaction product, thereby cooled, is returned to the reactor, after tapping off a portion as completed product.  The process may be applied to sulphonates or sulphates of long chain aliphatic hydrocarbons, fatty acids, or alcohols, glycerides, or polyoxyalkyl ethers using alkali or alkaline earth metal carbonates, bicarbonates or hydroxides; ammonia or organic bases.
Patent GB-1048109-A (GB)
Title: Method of producing textured yarns from tows of continuous filaments of synthetic linear high polymers, particularly polyamides
Inventor: RADIGK RUDOLF
IPC: D02J1/22
Filed: 1964-03-12
Abstract: In the production of textured yarns, a running tow of polyamide continuous filaments drawn under tension from a spool (optionally with simultaneous twisting) is stretched e.g. 4 : 1, between rolls 3 and the inlet rollers 4 of a stuffer box whereby it is fed directly into the crimping chamber 5 wherein the filaments (which are still in the condition of successively partial softening owing to the stretching) are crimped and also washed and set by means of hot water or a water-steam mixture.  The crimped tow is withdrawn by rollers 8 (assisted by a loop eliminating device 7) and formed into a spinning cake preparatory to winding.
Patent GB-497195-A (GB)
Title: Improvements in and relating to electric switches responsive to direction of rotary motion
IPC: H02P3/06
Filed: 1938-04-06
Abstract: 497,195. Actuation of switches; control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. April 6, 1938, No. 10538. Convention date, April 6, 1937. [Classes 38 (iii) and 38 (v)] A switch responsive to the direction of rotation of a shaft 14 is operated by the limited rotary displacement of a coaxial shaft 22 which is yieldably, coupled, e.g. by a magnetic coupling to the shaft 14. The shaft 22 carries an aluminium member 18 movable in the gap between a magnet 17 and a magnetic field member 21. The members 17, 21 rotate with the shaft 14 so that the shaft 22 tends to follow them. The shaft 22 carries a crank 19 having a pin 33 which is embraced bv two levers 36, 37 pressed towards each other by springs 34, 35. The levers also embrace a stop 40 and thus tend to hold the crank 19 in the central position shown in Fig. 2. When the shaft 14 rotates, the force acting on the shaft 22 causes the crank 19 to move in one direction or the other and the pin 33, which moves in a slot 32 in another lever 28, operates the lever 28 to bring a contact arm 26 into engagement with a contact 30 or 31. The invention is specially applicable to electric motors which are brought quickly to rest by reversing the connections, the above switch serving to disconnect the motor immediately it has come to rest and before it reverses. Specification 424,746, [Group II], is referred to.
Patent GB-835716-A (GB)
Title: Compositions for locking threaded members
Inventor: JAMES RAYMOND WINFIELD
IPC: C08L93/04
Filed: 1957-04-01
Abstract: A composition for locking threaded members comprises a resin in an amount by weight substantially greater than the amount by weight of a separate, artificial thermoplastic polymeric material in homogeneous admixture therewith, the resin having a softening point lower than the softening point of the artificial polymeric material and the composition optionally including a plasticizer and having a plasticity number, as determined by the parallel plate plastometer, of substantially 350-500 at 70 DEG  F., 175 to 450 at 90 DEG  F., and 100 to 400 at 100 DEG  F.  The resin may soften between 60-100 DEG C. and is preferably a hydrogenated rosin ester. The preferred thermoplastic artificial polymeric material is ethyl cellulose.  The composition may include a solvent and may be applied to the threaded member in solution form.  Suitable compositions comprise (all parts being by weight) 100 parts of hydrogenated rosin ester, 10-40 parts of ethyl cellulose, and 5-17.5 parts of plasticizer.  Suitable plasticizers include orthonitrobiphenyl, dioctyl phthalate and cresyl diphenyl phosphate, and suitable solvents include xylene and a toluene-methanol mixture.
Patent GB-252138-A (GB)
Title: Rotary sparking devices for converting triphase supply currents into high frequency energy for induction furnaces
IPC: H01T7/00
Filed: 1926-04-22
Abstract: 252,138. Ribaud, G. M. May 13, 1925, [Convention date]. Spark-gap apparatus. - In a rotary spark-gap apparatus adapted for high-frequency induction furnaces, condensers 5, Fig. 1, charged by triphase or monophase supply-currents are discharged through induction windings. 5<a> across a rotary spark-gap comprising two fixed segmented plates 1, 2 and an intermediate rotating disc 6, so that each discharge involves the passage of two sparks. Alternatively, the rotating disc may be mounted as shown in Fig. 3, the spark points 12 being connected by brushes 13 directly with the supply, and passing a single spark from each phase into the windings 5<a>. On a single induction winding 15<a>, Fig. 4, may be connected to an enlarged single contact 14 co-operating with the rotary spark disc. Fig. 8 shows an arrangement in which each discharge involves four sparks, namely from contact 29 to disc 26, across to fixed contact 27, through the induction winding to fixed contact 28, across to disc 26<a> and back to contact 30<a>. This ensures the electrical separation of the induction coil from the supply mains during the charging of the condensers. In a modified form the spark points are arranged on a concentric series of rings and co-operate with two radial arms connected to the induction winding.
Patent GB-1083074-A (GB)
Title: Product grading screen
Inventor: JENKINS RICHARD GEORGE CHRISTO
IPC: B07B1/46
Filed: 1966-03-10
Abstract: 1,083,074. Screens. M. C. BECERRA and L. A. LLAVERIA. March 10, 1966, No. 10624/ 66. Heading B2H. A product grading screen comprises a sheet 1 of soft elastic material (natural rubber or synthetic polymer) formed with a plurality of spaced apertures 2 and supported by a rigid mesh 5, the holes in the mesh 5 being of substantially greater area than the apertures 2 in the sheet 1. The apertures 2 may be all of the same size or they may be of gradually increasing size along the length of the screen. They may be of any shape, e.g. circular or elliptical. The upper surface of the sheet 1 is formed with raised ribs 3 arranged in a rhomboid pattern, Fig. 1 (not shown), and serving to guide the products to be graded towards the apertures. The mesh 5 is made of wires or rods 2 which are supported by a frame surrounding the sheet 1. The mesh 5 may extend below the sheet 1 which is secured thereto by clips or by adhesive, alternatively both may be moulded together with the mesh incorporated into the material of the sheet. Due to the size of the apertures 2 in the sheet 1 being smaller than the size of the holes formed between the wires or rods in the mesh 5, the edges of the apertures are able to flex freely. In operation, the screen is vertically reciprocated by a manually or power-operated mechanism and the screen may be slightly tilted to facilitate movement of the product, e.g. vegetables or fruits, being graded. Any product tending to jam into an aperture in the sheet 1 will cause the edges of that aperture to become stretched so that at the next reciprocating movement of the screen the product will be thrown upwards out of the aperture.
Patent GB-544037-A (GB)
Title: Improvements in space frameworks, chiefly for aircraft structures
IPC: B64C1/08
Filed: 1940-06-20
Abstract: 544,037. Aircraft fuselage. HOFF, N. J. June 20, 1940, No. 10627. [Class 4] An aircraft fuselage or wing without a stressed skin is built up with longitudinals a, bracing b, and transverse frame members g, h which are resistant to bending without the use of cross bracing. The transverse frames may be closed rings, except where access openings are formed in the fuselage, in which case they are interrupted as shown by the frame h. The frames may be resistant to bending out of their planes and also resistant to torsion. The transverse frames may be combined with cross bracings or used alone.
Patent GB-108200-A (GB)
Title: Improvements relating to the Destructive Distillation of Carbonaceous Substances.
Inventor: WELLINGTON STEPHEN NEWCOMBE
IPC: C10B57/18
Filed: 1916-07-27
Abstract: 108,200. Wellington, S. N. July 27, 1916. Fixing.-In the destructive distillation of coal in a vertical retort at comparatively low temperatures, a free space is left at the top of the retort above the charge, and the gas as it passes through such space is heated to a higher temperature than that to which the charge is heated. A mass or grid of iron, carbon, or fire-clay may be suspended in the free space.
Patent GB-912321-A (GB)
Title: Apparatus for light control
IPC: G02F1/19
Filed: 1959-03-26
Abstract: 912,321. Cathode-ray tubes. AGFA A.G. March 26, 1959 [March 27, 1958], No. 10686/59. Addition to 902,384. Class 39 (1). [Also in Group XL (b)] Apparatus as described in the parent Specification for controlling a beam of light utilizing the change in the refraction index of a medium (a colloid or solubilized system) consequent upon a change in the concentration of the medium when subjected to an electric field, is characterized by the use of an alternating potential to create the electric field, means being provided for adjusting the alternating potential so that, in the absence of a controlling influence, a symmetrical alternating current (i.e. a current having equal positive and negative amplitudes) flows through the medium. The invention ensures that no change of concentration takes place and no control of the light is effected in the absence of a controlling influence. The apparatus illustrated comprises an image intensifier or image converter for controlling light 18 by radiation 17, e.g. visible light, infra-red rays, ultra-violet rays, X-rays or electrons. Located between electrodes 1 and 8 are a solution 6, which may be a colloidal solution, a membrane 3, a colloidal solution 5 divided into elemental sections by insulating portions 4, an electrode 2 and a radiation responsive semi-conductor 7. In accordance with the invention, the electric field for operating the aparatus is supplied by an alternating potential 10 which is applied via oppositely connected rectifiers 15 and 16 and resistors 11 and 12 which are adjusted so that, in the absence of radiation 17, a symmetrical alternating current flows. Preferably, electrode 2 is made opaque to prevent the controlled light 18 from influencing semiconductor 7. Electrode 8 is a thin metal layer transparent to radiation 17; where the radiation is electrons, the layer may be replaced by a wire gauze. Where the semi-conductor 7 does not exhibit a rectifying characteristic, reference is made to the inclusion of a rectifier in the apparatus in the form of a blocking layer located either between electrode 8 and layer 7 or between layer 7 and electrode 2.
Patent GB-389660-A (GB)
Title: Improvements in adjustable castors
IPC: B60B33/04
Filed: 1932-04-14
Abstract: 389,660. Castors. NALLE, C. R., 515, Stock Exchange Building, Philadelphia, U.S.A. April 14, 1932, No. 10704. Convention date, April 15, 1931. [Class 52 (i).] A castor is provided with means for vertical adjustment and locking, which is fitted on the shank of the castor. Fig. 5 shows a castor wheel 2 in a yoke 1 fitted with a stem 3 formed with grooves 4 which have inclined upper surfaces and horizontal lower surfaces. The lower end of the guide 5 is formed with a flange fitting into an annulus 7 with upwardly extending teeth 8 and horizontally extending tabs 9. The base 10 of the annulus 7 is engaged by the U-section inner parts of a disc 11, which is set in a thicker disc or cup member 12 with a bent-over flange 13. In the disc 12 are eccentric grooves 15, Fig. 3, receiving pins 16 on dogs, Fig. 7, pivoted at 18, formed with grooved edges 19 adapted to engage with the grooves 4, Fig. 5. By rotating the disc 12 counterclockwise, the dogs are disengaged from the stem 3, and the castor adjusted. The disc 12 is then released, and the stem is looked in position.
Patent GB-926833-A (GB)
Title: Improvements in or relating to the playing back for stored signal information
IPC: G11B11/00
Filed: 1962-03-20
Abstract: 926,833. Reading magnetic tapes; Kerr and Faraday effects. AMPEX CORPORATION. March 20, 1962 [April 3, 1961], No. 10730/62. Class 40 (2). Polarized light is directed in known manner on to (Figs. 3, 4, Kerr effect) or through (Fig. 6, Faraday effect) a low-coercive force coating, preferably of cobalt, on a drum which acts as a tape guide or capstan and which is contactprinted with information recorded on a higher coercive force tape 10, the emergent beam being analysed for rotation and directed to photo-cell means. In Fig. 3, the beam 48a, polarized at 46a is directed by a mirror 63 through a glass drum 60 to the inner face of the coating 61, while the tape 10a is contacting it; the reflected beam is directed by a mirror 64, analysed at 52a and sensed by a cell 54a. In Fig. 3, a capstan 72 and pinch-rollers 68, 70 drive a tape 10b over a coating 66, which retains sufficient printed information for sensing at a later part of the capstan's rotation. Erase means 75 may be provided if the coating requires it. A glass capstan 102 (Fig. 6) has a thin evaporated coating read by transmitted light. A coated plate (Fig. 5, not shown) may be arranged to dab the tape intermittently for contact-printing, the information being read when the plate is removed from the tape. Bias means at the printing point (Figs. 1, 2, not shown) may improve the sensitivity of the system, especially when the information is of the RZ or NRZ digital type. Reference has been directed by the Comptroller to Specification 883,936.
Patent GB-590545-A (GB)
Title: Improvements in systems of high tension conductors
IPC: H01B9/00
Filed: 1942-07-31
Abstract: 590,545. Conductors for transformers and dynamo - electric machines. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. July 31, 1942, No. 10738. Drawings to Specification. [Classes 35 and 38 (ii)] The Specification describes a method of determining the curvature of the rounded end of a slot conductor of a high voltage generator or transformer for avoiding excessive stress in the insulation.
Patent GB-1199351-A (GB)
Title: Improvements in the Preparation of Nitroxides
Inventor: YOUNG DONALD PETER
IPC: C07D295/24
Filed: 1968-03-06
Abstract: 1,199,351. Preparation of nitroxides. BP CHEMICALS (U.K.) Ltd. 12 Feb., 1969 [6 March, 1968], No. 10836/68. Heading C2C. Nitroxides of the general formulµ wherein R<SP>1</SP>-R<SP>6</SP> represent the same or different alkyl groups and n is from 1 to 17, are prepared by oxidizing the corresponding amine to the N-hydroxy amine by reaction with aqueous hydrogen peroxide in the presence of permolybdic or pertungstic acid or a salt thereof as catalyst, and subsequently oxidizing the N- hydroxy amine to the corresponding nitroxide by means of another oxidizing agent, e.g. molecular oxygen or ferricyanide ion. The primary oxidation is preferably performed at room temperature using 1-1À5 moles H 2 O 2 / mole amine and the aqueous solution contains a small amount of sodium ethylenediamine tetraacetate. The resulting reaction mixture is preferably heated to a temperature up to 100‹ C. and then cooled before carrying out the second oxidation step. Examples detail the preparation of 2,2,6,6 - tetramethylpiperidine - 1 - oxyl, 2,2,5,5 - tetramethylpyrrolidine - 1 - oxyl, and t.-butyl t.-pentyl nitroxide.
Patent GB-1495123-A (GB)
Title: Rotary kiln
IPC: F27B7/40
Filed: 1976-03-18
Abstract: 1495123 Cooler tubes for rotary kilns POLYSIUSAG 18 March 1976 [2 May 1975] 10851/76 Heading F4B A rotary kiln has satellite cooler tubes 22 mounted on the kiln casing 23 by annular supports 24 comprising inner disc rings 25 and outer disc rings 26. The cooler tubes 22 have individual disc rings 28 which surround the tubes leaving a small gap between the tube and disc. Projections 29, 29a welded to the cooler tubes are releasably connected to the disc rings 28 by screws 30. Screws 31, 32 connect the disc rings 28 to the outer and inner disc rings 26 and 25. Disc rings 28 of adjacent cooler tubes 22 are affixed alternately to one side and then the other of the inner and outer disc rings 25 and 26. The annular supports may be resiliently mounted on the kiln casing by welding the inner disc to plates secured circumferentially round the kiln as in Fig. 5. In a modified arrangement the annular support (44), Fig. 6 (not shown), may have a polygonal ring (45) or in a further arrangement the annular support (4), Fig. 1 (not shown), may comprise one disc with inner and outer zones with a resiliently yielding connection between them. The annular support may also comprise inner and outer rings constructed from segments which are off set circumferentially (Figs. 7 and 8).
Patent GB-198866-A (GB)
Title: Improvements in means for operating railway points or switches
IPC: B61L11/02
Filed: 1922-04-18
Abstract: 198,866. Lewis, H. P. April 18, 1922. Mechanically operated by vehicle.-Points are operated by a crank 25 on a shaft 21 which is geared to a shaft 16 by bevel gearing 19, 23, the shaft 16 being geared to a shaft 17 by a segmental series of teeth 12, 13 and the shafts 16, 17 carrying lugs 28, 29 engaged by rods 44 on the vehicle 43. The lug 28 is placed at one end of the teeth 12 and is spaced apart laterally from the lug 29, the lugs entering staggered slots 40 placed in separate grooves 38 in a cover-plate 30, the grooves having separate inclined ends but a common entrance throat. The shaft 21 is protected by a covering 24 secured thereto.
Patent GB-432748-A (GB)
Title: Improvements relating to pilot and other small gas valves
IPC: F23Q9/00
Filed: 1934-04-11
Abstract: 432,748. Thermally-actuated valves. RADIATION, Ltd., Thimble Mill Lane, Aston, Birmingham, and YATES, H. J., 15, Grosvenor Place, Westminster. April 11, 1934, No. 10903. [Class 135] A thermally-actuated safety cut-off valve d is manually opened by a cam k acting on a lever which presses against the valve stem f, the cam being released so that its finger piece l under the action of a spring or gravity, returns to a position clear of the lever when the heat-responsive strip g heated by burners b takes up the control of the valve and presses the valve stem against the valve spring e. Thus, in the event of the strip cooling, the valve is free to close automatically. The strip is bent and is of resilient bi-metallic form. A metal piece m attached to the strip extends into the burner flames. The free end of the strip bears against a nut h on the valve stem.
Patent GB-183110-A (GB)
Title: Improvements in electric commutating switches
IPC: H01H19/56
Filed: 1922-04-18
Abstract: 183,110. Bally, J. July 13, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Regulating-switches; contacts.-In an electric commutating switch of the kind having a cylinder 7 carrying stepped conducting plates 21, 22, 25, 26, 27 upon which the brushes 3<a>, 4<a>, 4<b>, &c. rub, the brushes are superposed and arranged along generatrices oo<1>, mm<1>, nn<1> &c. spaced equally around the periphery. Each brush is supported on its own post 1<a>, 2a &c. and is pressed into engagement by leaf-springs 17, 18 &c. bearing against an insulated part of the casing 11. Figs. 6 and 7 show a form of brush wherein yokes 29, 30, carrying the roller 31, are attached to, and bent round the post 1<a>, to form a spring 32. The main terminals 8, 9 are connected to contacts 21, 22 by screws 23, 24, and a stop 12 limits the travel of the cylinder 7.
Patent GB-545376-A (GB)
Title: Improvements in calorimeters
IPC: G01N25/26
Filed: 1941-08-27
Abstract: 545,376. Calorimeters. COOK, C. W. Aug. 27, 1941, No. 10928. [Class 97 (iii)] In a fuel calorimeter the vessel or bomb 1 in which the fuel is burnt in oxygen under pressure is closed by a cap 2 having a depending flange 3 which is internally threaded and also a central conical projection 4 which seats on the top inner edge 4a of the bomb opening, the edge being slightly rounded. The screw threaded flange 3 is provided with an interrupted thread co-operating with a similar thread in the bomb whereby the cap 2 is seated by axial movement and tightened up by engagement of the threads in a rotary movement to provide a gas-tight joint. The cap 2 is provided with a screwed recess 9 into which a valve 7 is fitted the valve pin 10 of which coacts with a seating 11 and is packed with graphite pressed by a gland bush 12. A recess 14 on the underside of the cap 2 communicates with the valve 7 for the admission of oxygen which is directed against the wall of the bomb by a passage 16 formed in a plug 15 fitted into the recess 14. The plug 15 also carries an electrode 20 to which one end of the heating wire 18, situated in the crucible 17, is secured. Another electrode 19, having a support for the crucible 17, has a screwed sleeve 21 for securement to the end of the plug rod 22 which is insulated from and positioned in the cup 2 by ebonite bushes 24, 27, a fused silica or like washer 28 being provided. The base of the bomb has a depending flange with apertures as shown.