baber/WOPTO huggingface dataset:
Patent GB-1197406-A (GB)
Title: A Method of Preparing a Liquid Dispersion and Processes and Products Employing the Same
IPC: B01J13/02
Filed: 1968-06-11
Abstract: 1,197,406. Cellulose fibrous compositions. NATIONAL CASH REGISTER CO. 11 June, 1968 [17 July, 1967], No. 27635/68. Headings C3N and C3U. [Also in Divisions B2, D1 and D2] A liquid dispersion in which minute polymer capsules are bound together with cellulose fibres is prepared by dispersing by agitation the capsules and the fibres in a solution of a film-forming polymeric material, effecting liquidliquid phase separation of the solution and continuing the agitation of the solution to disperse the emergent, polymer-rich liquid phase the droplets of which effect the binding of the capsules and cellulose fibres. The cellulose fibres are preferably dry ball-milled fibres of from 20 to 200 microns in diameter. In an example the capsules have walls of a 1 : 1 complex of gelatine and gum arabic and contain chlorinated oil. Synthetic fibres of synthetic resinous material, e.g. polyacrylic, polyester, polyamide may also be present. The film-forming polymeric solution may have one electric charge, e.g. polyethylenimine starch and the tertiary amine of corn starch in which case phase separation is effected by the addition of a reagent having an opposite electric charge, e.g. polyvinyl methyl ether maleic anhydride, karaya gum, gyar gum, locust bean gum and polyacrylamide. The dispersion may be pressed into blocks in which an intimate mixture of capsules and fibres are present in juxaposition.
Patent GB-519084-A (GB)
Title: Improvements in and relating to electric stoves
IPC: F24C7/00
Filed: 1938-09-22
Abstract: 519,084. Electrically-heated stoves. THIMBLETHORPE, W. S. Sept. 22, 1938, No. 27640. [Class 39 (iii)] An electric heating stove may be used as a roam heater or as a combined hot-plate and griller by altering the position of the heating element and parts connected thereto. Fig. 2 shows the apparatus used as a room-heater. The hood 9 is -movably supported in a base 11 and carries the heating element 10, cover plate 12, and a plate 13 which may act as a reflector. A heat-retaining plate 14 is mounted behind the element 10. The hood, which is provided with lugs 19 and a handle 20, is connected to the base by a link 15 which is pivoted to the base at 16 and to the hood at 18 The member 9 may be lifted by the handle 20 and swung round to the position, shown in Fig. 4, wherein the lugs 19 engage the top of the end plates of the base member. The plate 14 forms a support for cooking vessels, and a. tray 21, the height of which is adjustable, can be used in a lower position as a support for pans, and in a raised position reflects heat upon the plate 14.
Patent GB-1079620-A (GB)
Title: Improvements in or relating to process and apparatus for heavy medium separation
Inventor: LEEMAN JAN NICOLAS JACOB
IPC: B03B5/38
Filed: 1966-06-21
Abstract: 1,079,620. Sink and float separators. STAMICARBON N.V. June 21, 1966, No. 27724/66. Heading B2H. In an apparatus for sink-and-float separation of loose solid materials, e.g. ore or coal and comprising a rotary drum 1 containing a bath 2 of heavy separating medium and having at one end sinks extractor means 4, a partitioning member 10, which rotates with the drum and is partly immersed in the separating medium, is provided between the feed chute 3 and the extractor means 4 and has a flexible marginal portion 12 which bears against the wall of the drum so that the spaces on opposite sides of the member 10 are in communication only when the portion 12 is flexed out of contact with the wall of the drum. Such an arrangement of the partitioning member allows passage of the sinks towards the extractor means 4 but prevents the floats from being removed with the sinks. The flexible portion 12 of the member 12 may form part of a rubber disc clamped between two rigid plates. A rod 15 extending from the feed chute 3 is bent to engage and flex the member 12 out of contact with the drum wall at the bottom of the bath. The extractor means 4 comprises a ring of pockets (5), Fig. 2 (not shown), formed between slanting perforated plates (6, 7). As the drum rotates, the pockets (5) collect the sinks from the bottom of the bath of separating medium and raise them out of the medium to an elevated position at which they fall into a chute 13. A plate 9 is mounted between the member 10 and the extractor means 4 with its periphery spaced from the drum wall so that the circulatory current set up in the bath by the extractor pockets moving into and out of the bath is confined to the space between the plate 9 and the member 10. The plate 9 may, as shown, rotate with the drum and, in this case, is connected to the member 10 by a spacing member 11. The floats discharge via a chute 14. The drum 1 is supported on rollers (8) in a horizontal or slightly inclined position.
Patent GB-1039866-A (GB)
Title: Process for the production of hydroxylamine
IPC: C01B21/14
Filed: 1963-07-12
Abstract: The production of hydroxylamine by catalytic reduction of nitric oxide with hydrogen in acid solution is characterized in that the process is carried out continuously in the presence of a maintained concentration of the hydroxylamine salt of the acid of 0.4-1.0 mole per litre of reaction solution.  Temperatures of 65-80 DEG  C., a pH of 0.5-3.0 and aqueous or alcoholic solutions of H2SO4 or HCl are used. The preferred catalyst is platinum supported on active carbon and impregnated with silver nitrate; alloys of platinum with Ag, Hg, Pb, An, Ir, Pd, V, Nb, Ta, Cr, Mo or W may be used. Hydroxylamine yields of more than 80% (referred to initial nitric oxide) are achieved.
Patent GB-989990-A (GB)
Title: Propeller blade for vtol aircraft
IPC: B64C29/00
Filed: 1963-07-12
Abstract: 989,990. Screw propeller blades for VTOL aircraft. ELECTRO AUTO-LITE CO. July 12, 1963 [July 25, 1962], No. 27810/63. Drawings to Specification. Headings B7V and B7W. A propeller for a VTOL aircraft comprises a plurality of propeller blades radiating from and operatively connected to a propeller hub, each blade having an inboard portion of symmetrical section, an outboard portion of cambered section, and an intermediate portion connecting the inboard and outboard sections. The blades are twisted and tapered, their thickness and twist decreasing progressively towards the tip; the angle of twist at the inboard end is less than 35 degrees, and preferably between 15 degrees and 20 degrees. In a preferred embodiment the thickness: chord ratio varies from 0À55 to 0À12. The inboard section extends to 0À4-0À55 of the blade tip radius (preferably 0À473) and the outboard section starts at 0À55-0À725 (preferably 0À65). The design lift coefficient of the outboard section may be 0À5. The blade described is of constant chord and may be mounted for pitch variation.
Patent GB-616654-A (GB)
Title: Improvements in and relating to control switches for discharge lamps
IPC: H05B41/12
Filed: 1946-09-17
Abstract: 616,654. Control systems for space discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 17, 1946, No. 27874. Convention date, Sept. 17, 1945, [Class 38 (iv)] A rapid starter for a discharge lamp 1 comprises a glow discharge device 7 series connected to the coil 15 of an electromagnetic switch 8 through its normally closed contacts 12. The discharge device is capable of carrying an appreciable current so that when the switch opens the inductance 5 provides a high starting voltage between the electrodes 2. A condenser 9 may be shunted across the discharge device and switch to limit the value and prolong the period of the voltage kick. A lock-out switch with resistance heater 20 and normally closed contacts, such as two bimetallic members 18, 19, may be included in the starter circuit to operate should the lamp fail to light after a predetermined period. Specification 542,853 is referred to.
Patent GB-965204-A (GB)
Title: A sail batten
Inventor: CARLTON WILLIAM CHARLES
IPC: B63H9/06
Filed: 1963-07-15
Abstract: 965,204. Sail battens. CARLTON TYRE SAVING CO. Ltd. July 15, 1963, No. 27874/63. Heading B7V. A sail batten 1 moulded in a plastic material with ribs 3 such that when sufficient end load is applied the batten will form a curve, is characterized in that if the length of the batten is L and the end load is sufficient to cause one end (9) of the batten to take up a position between 80 degrees (at 28) and 90 degrees (at 29) from its relaxed position the base of the curve will be between 0.9 L and 0.75 L and with a length of base within these limits the height of the curve at 0.15 L will be between 0.15 L and 0.25 L and the height of the curve at 0.5 L will be less than the height at 0.15 L and be between 0.1 L and 0.2 L and the centre line of the curved batten on its convex side 34 has no concavities and on its concave side 33 has no convexities.
Patent GB-1436266-A (GB)
Title: Apparatus for the regeneration of activated carbon
IPC: C01B31/08
Filed: 1973-06-12
Abstract: 1436266 Regeneration of active carbon CEAG DOMINIT AG 12 June 1973 [12 June 1972] 27888/73 Heading C1A Apparatus for the regeneration of active carbon comprises a container divided by perforated plates into at least three spaces, the intermediate space containing spent activated carbon, the adjoining spaces each being provided with at least two pipe connections, one of the pipe connections being connected to the outlet of a combustion device for liquid fuels. As shown (Fig. 1) the interior of the container 2 comprises internal spaces 3, 4 and 5 formed by perforated plates 6 and 7. Active carbon 8 is disposed between plates 6 and 7. At 9 a connection is provided for the admission of gas to be purified, an outlet 12 for the material desorbed from the carbon during regeneration being provided above the carbon bed 8 on the other side. Below the bed 8 is a connection 10 associated with 9. An installation 14 for burning liquid fuel is connected via 11 to the container, below the bed 8. Flow of gas to be purified may be from 9 to 10 downwardly through the bed or from 10 to 9 upwardly, the combustion gases being passed in the opposite direction 11 to 12 or 12 to 11 respectively. Other modifications are described.
Patent GB-708364-A (GB)
Title: Method of and means for obtaining free bend tests on welded test pieces
Inventor: HUDSON MATTHEW ANTHONY
IPC: G01N3/00
Filed: 1951-11-28
Abstract: 708,364. Testing welded joints. MECHANS, Ltd. Nov. 10, 1952 [Nov., 28, 1951], No. 27938/51. Class 106 (2) A method of obtaining free bend tests on welded test pieces comprises giving the ends of a test piece a slight directional set wherein the centre of the weld is at the point of maximum displacement, mounting the two ends of the test piece in bearings permitting rotational movement of the ends on bending of the test piece and' exerting pressure on both the ends, the pressures being directly opposed, and at least one being positive. When carrying out a series of tests a work piece is prepared in rectangular plate form with a weld running centrally between and parallel to two e.dges of the plate which is then cut into a number of strips with a portion of the weld between the ends of each. To carry out a test on a piece 7 its ends are given a slight directional set and clamped by screws 8 in blocks 5 each having a pair of aligned pintles 9 adapted to bear in recesses 15 in pairs of pillars 13, 14 projecting from plates 12 shaped to co-operate with the jaws 'of a machine, not shown, adapted to be closed up until the pintles 9 engage in the recesses 15. Pressure is then applied to bend the test piece 7 whose ends rotate freely. The amount of elongation in the weld region can be measured without dismantling and is always visible.
Patent GB-785040-A (GB)
Title: Process for the production of chromous chloride solutions
IPC: C01G37/06
Filed: 1954-09-28
Abstract: Chromous chloride solutions are obtained by dissolving in the absence of oxygen aluminothermically-produced chromium in a quantity of hydrochloric acid less than that theoretically required, and separating the solution from the undissolved residue.  The temperature preferably is in the range 50-100 DEG  C., during the reaction and separation, and the reaction should be carried out rapidly, e.g. in 15-45 minutes, unless the chromium is previously treated with hydrofluoric acid, in which case speed is not necessary. Rapid working requires the provision of finely-divided particles of chromium, e.g. metal crushed in a mortar to a particle size below 0.4 mm.  Oxygen can be excluded from the reaction zone by displacement with an inert gas such as nitrogen or by covering the surface of the reaction mixture with a layer of liquid such as a hydrocarbon free from oxygen-containing compounds.  The reactants are preferably preheated to the reaction temperature.  Hydrochloric acid may, if desired, be added to the resultant solution after separation of the residue, e.g. stable solutions containing 1 mol. chromium per litre may contain up to 40 gms. of hydrochloric acid.  If the chromium is pretreated with hydrofluoric acid (e.g. 40 per cent hydrofluoric acid), preferably less than 1 part by weight of H2F2 should be added per 100 parts by weight of chromium: the hydrofluoric acid is preferably separated before dissolution in hydrochloric acid.  In the examples, the reaction is performed in a flask heated by means of a water bath, and one reactant added slowly to the other in an aqueous medium which may be covered with a layer of dodecane and agitated with a stirrer.  Continuous operation is referred to but not described.
Patent GB-425012-A (GB)
Title: Improvements in and relating to roller shutters
IPC: E06B9/18
Filed: 1934-09-29
Abstract: 425,012. Roller shutters. NEGRINI, B., 190, Via San Vitale, Bologna, Italy. Sept. 29, 1934, No. 27972. [Class 20 (iii)] A roller shutter or guard comprises horizontal channel or double T-section members A, B, having projections pivotally connecting them with or without intermediate pivoted links L. The projections C<1>, C<11> are fixed to the base or sides of the channels by keying or riveting as shown in Figs. 8 and 10 or otherwise and the hinges are knuckle-jointed to prevent hinging towards the outside as shown in Fig. 3. The hinge pins P are secured by riveting the ends. The securing keys E, Fig. 8, are given a slight taper and are retained in position by bending. The lengths of the connecting links may be varied to facilitate folding as shown in Fig. 16, the connectors C of the groups of six horizontal elements being progressively increased. The connectors can be spaced to produce any desired pattern.
Patent GB-1084005-A (GB)
Title: Improvements in or relating to hoisting tackle
IPC: B66D3/04
Filed: 1966-06-22
Abstract: 1,084,005. Hoisting tackle. RICHIER, S.A. June 22, 1966 [June 22, 1965], No. 27993/66. Heading B8B. The hoisting tackle of a tower crane comprises a rope 30 passing around upper and lower sets of pulleys 16, 23 and a further pulley (20) movable between the lower and upper sets of pulleys to provide two or four falls respectively. The upper pulley framework 14 mounts a pair of spaced parallel plates 18 held in their respective position by a spring (19) and each having a bearing hole 21. The further pulley framework 25 mounts a pair of spigots 27 which on raising the further pulley assembly 12 forces the plates 18 apart until the spigots 27 are engaged by the holes 21. The further pulley assembly 12 is released from the plates 18 by an arm 29 movable between an inoperative position and an operative position in which on raising the lower pulley assembly towards the upper pulley assembly the plates 18 are forced apart by the arm 29 to release the spigots 27 from the holes 21. The dimensions of the arm 29 are such that the further pulley assembly and the lower pulley assembly may be lowered without further engagement with the holes 21.
Patent GB-519822-A (GB)
Title: Improvements in or relating to receivers for audio electric currents
IPC: H04R13/02
Filed: 1938-09-26
Abstract: 519,822. Telephone receivers. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and ROSEBY, P. N. Sept. 26, 1938, No. 28009. [Class 40 (iv)] An auxiliary permanent magnet 13, Fig. 1, is. inserted in a telephone receiver containing an operative permanent magnet 10, Fig. 2, in order to reduce the external magnetic field. The magnet 10 is a short bar of  "Alnico" or - other magnetic material of high coercivity lying between L-shaped pole-pieces 7 around which the coils 11 are arranged. Lateral extensions of the pole-pieces support on one side a clip 14 for the auxiliary magnet 13 and on the other side a bracket 12 for the strain cord of the leads, which are attached to terminals 9 secured with the pole-pieces to the base of the casing by bolts 8. The outside field is still further reduced by means of liners 5, 6 of magnetic material around and at the back of the receiver and the magnetic diaphragm 4 in front. An inset casing 2 is of light metal, e.g. aluminium, and the outer parts 1, 3 of the casing are of thin material known under the Registered Trade Mark "Bakelite."
Patent GB-933349-A (GB)
Title: Improvements in or relating to projectiles
IPC: F42B12/48
Filed: 1960-08-12
Abstract: 933,349. Smoke and like bombs. WEFO, PYROTECHNISCHE FABRIK WISTEDT W. FORQUIGNON. Aug. 12, 1960 [Aug. 13, 1959], No. 28036/60. Classes 9 (1) and 9 (2). A smoke candle has a friction ignition charge 9 and an ignition charge 10 which is ignited by the combustion gases released on electrical ignition of a propellent charge (not shown), the charges 9, 10 being positioned in recesses 4, 5 in a box 2 holding the smoke-producing composition. A socket 7 attached to an end 6 of the box 2 supports the ignition charges 9, 10 and the propellent charge is housed in a cavity in the socket. A cup-discharger has walls 37 and a removable bottom 38 and electrical contact with the propellent charge is made via conducting strips 13, 14 from pins 46 to an electrical ignition pellet embedded in the propellent charge. The smoke candle may be thrown by hand, in which case the friction igniter is used, or on placing the candle in the cup discharger it may be fired by igniting the propellent charge, whereupon the propellent gases enter between the socket 7 and the bottom 38 to a space 44 and at the same time travel along a bore 29 to ignite the charge 10. A disc 49 with a sealing ring 48 is attached to end 3 of the box 2 to ensure proper positioning of the candle in the cup-discharger and also for sealing the candle in a box similar in shape to the cup-discharger for storage purposes. The smoke-producing composition may be replaced by a fume, incendiary or explosive composition.
Patent GB-497814-A (GB)
Title: Improvements in radio sockets
IPC: H01R33/76
Filed: 1937-10-15
Abstract: 497,814. Two-part couplings. SCHMITT, A. J. Oct. 15, 1937, No. 28101. Convention date, Oct. 26, 1936. [Class 38 (i)] Each contact of a thermionic valve holder rests upon shoulders 13 formed between the enlarged upper part 12 of a recess in the body 10 and a slot for the shank 19 leading from the recess to the under surface of the body. The shank is bent laterally to retain the contact in place. The contact is stamped from sheet metal and has a pair of legs 17 that are torsionally distorted when the valve pin is inserted, the distortion being limited by the width of slots 14 formed in the sides of the enlargement 12 to receive the legs. The contacts are arranged in an oblique position in relation to the radii of the holder and surround a central orifice with a guide-way 11a in one side to locate the valve. The body is moulded into an opening in a mounting-plate 20 the opening having an irregularity in its outline to form a key.
Patent GB-504345-A (GB)
Title: Improvements in adjusting devices for the contacts of electro-magnetic vibrators for high frequency electro-medical apparatus and the like
IPC: A61N5/00
Filed: 1937-10-15
Abstract: 504,345. Electromedical apparatus. COOPER, C. A. Oct. 15, 1937, No. 28152. [Class 81 ( ii)] [Also in Group XXXVII] In a high frequency violetray electromedical apparatus having an induction coil 4 with co-operating contacts 5, 6, the contact 6 is adjusted to vary the effect by sliding a button 16 up and down, the button 16 being connected by a pin 14 and slot 11a to a bell crank lever 11 pivoted at 12 and connected at its other end to a push rod 10 connected to the spring 8 carrying the contact 6. The spring 8 engages a collar which can also be adjusted relatively to the screwed lower end of the rod 10. Movement of the button 16 first causes the contacts to engage to bring the induction coil into action and then reduces the air gap between contact and core so as to increase the strength of the discharge.
Patent GB-717729-A (GB)
Title: Improvements in fluid control valves
IPC: F16K25/04
Filed: 1952-11-10
Abstract: 717,729. Valves; regulating fluid flow. HENSLEY, C. A E. Nov. 10, 1952 [June 19, 1952], No. 28207/52. Class 135 A fluid control valve constructed to permit the gradual increase or decrease of fluid flow through the valve to reduce erosion strains and vibrations in the valve parts comprises a plunger 35, Figs. 1, 2, having helical grooves 37 in spaced relation to similar grooves 12 in a casing 2 to form a gap 38 of abruptly changing cross section. The casing 2 is formed with three grooves 23, mounting keys 22 having threads 24 engageable with the grooves 37 in the plunger 35 to enable the plunger to be axially moved on rotation of an hexagonal shaft 46 which co-operates with an hexagonal hole 44 in a plate 39 secured to the plunger. When fully closed the plunger 35 engages a resilient seating 11 adjacent the valve inlet 4 and the plate 39 engages a conical seat 17. When fully open, a conical face 43 on the plate 39 abuts a seat 30 and permits renewal of packing 49 without impairing the fluid-tightness of the valve. The plunger may be moved to any intermediate position to restrict the rate of flow of the fluid to the desired amount, the energy stored in the fluid being gradually dissipated as the fluid passes axially through the varying cross-sectional gap 38, spiral flow through the gap 38 being prevented by the keys 22.
Patent GB-518445-A (GB)
Title: Wafer type razor blade sharpener
IPC: B24D15/08
Filed: 1938-09-29
Abstract: 518,445. Sharpening razor blades. DOOTSON, N. L., and BASSETT, C. W. Sept. 29, 1938, No. 28306. [Class 60] A device for sharpening double-edged razor blades comprises a member 1 of sharpening - material having a concavely curved sharpening - surface and a clamping, bar 2 curved correspondingly to the sharpening-surface, the bar 2 resting on surfaces 1a and being secured to the member 1 by bent ends 2a so as to leave a narrow slot 3 for the blade 4. The member 1 is of less width than the length of the blade so that this may be moved endways by the fingers; the bar 2 may be narrower than the member 1 to assist in inserting the blade. In a modification, the bar 2 is hinged at one end to the member 1, and in another modification, the bar 2 is riveted at its ends to the member 1, which is made of steel and has oblique sharpening-ribs over its whole surface, or at its ends. In a further modification, the sharpening element is formed as an insert in the handle of a safety razor. The member 1, and if required the bar 2, may have a bevelled or rounded edge to assist in insertion of the blade.
Patent GB-203930-A (GB)
Title: Improvements in means for securing handles to brooms
IPC: B25G3/24
Filed: 1922-10-19
Abstract: 203,930. Weeks, C., and Weeks, L. V, Oct. 19, 1922. Handles with clamping devices for brushes.- The brush head H is clamped between curved jaws A, B, formed with flanges G engaging under the edge of the head, and pairs of lugs D<1>, D<2> for the clamping bolts C. A socket F for the handle is formed on the jaw B. Openings 0 may be formed in the jaws to reduce weight.