baber/WOPTO huggingface dataset:
Patent GB-486992-A (GB)
Title: Process for the manufacture of ª .ª -unsaturated ketones of the cyclopentano-polyhydrophenanthrene series
IPC: C07J1/00
Filed: 1937-03-25
Abstract: b -g -unsaturated ketones of the cyclopentano-polyhydrophenanthrene series are prepared by subjecting to a dehalogenation treatment under mild conditions compounds of the general formula <FORM:0486992/IV/1> where Hlg stands for halogen and X for = O, <FORM:0486992/IV/2> , or <FORM:0486992/IV/3> , Y being a hydroxyl group or a group which on hydrolysis is converted into a hydroxyl group, and R any substituted or non-substituted hydrocarbon residue.  An essential feature of the mild conditions is that the medium in which the reaction takes place should be neutral, and remain neutral throughout the reaction. Furthermore the heating should be as short as possible. The preferred dehalogenation process is by the use of zinc dust in ethanol or methanol solution.  In examples, (1) D 5-cholestenol dibromide (-5 : 6) is heated with zinc dust in ethanol solution for 15 minutes on the water bath.  The zinc is filtered and the filtrate sprayed with water, and the D 5-cholestenone-(3) which separates is purified by means of its oxime; (2) D 5-pregnenol-(3)-one-(20) is dissolved in glacial acetic acid and treated with bromine.  The solution is then oxidized with chromic acid and the dibromopregnandione precipitated with water.  The bromine is removed by warming with zinc in alcoholic solution and the resulting D 5-pregnendione is purified by means of its oxime; (3) D 5-androstenol-(3)-one-17 is converted into its dibromide and oxidized as in example (2) to form dibromo-androstendione. This is debrominated by treatment with zinc dust in methanol for half an hour at boiling point, to give D 5-androstendione-(3 : 17).  Specification 461,335 is referred to.  A sample has been furnished under Sect. 2 (5) of D 5-androstenolone acetate prepared from androstendiol-(3 : 17)-monoacetate-(17) by bromination and oxidation as in example (2) above followed by debromination with zinc dust in methyl alcohol.
Patent GB-686786-A (GB)
Title: Improvements in or relating to aerials
IPC: H01Q9/08
Filed: 1950-04-11
Abstract: 686,786. Aerials. MELLY, H. S. April 11, 1950, No. 8921/50. Class 40 (vii). An aerial system comprising a rod or tube aerial 1 mounted in an insulating connecting box 2 is provided with a protecting hood for the joint 3 consisting of a start portion 4 depending from a sleeve frictionally gripping the rod or tube. The skirt may be conical as shown, cylindrical, or rectangular, and is preferably integrally moulded with the sleeve in thermo-plastic or thermosetting material having slight elasticity so that when the hood is placed on the aerial a watertight joint is formed. The start portion of the cover may alternatively be made of rigid material and only the part embracing the aerial be flexible, for example, a rubber tube.
Patent GB-394937-A (GB)
Title: Device for locking a filling nozzle to a tank inlet or the like
IPC: F16L37/12
Filed: 1933-03-24
Abstract: 394,937. Pipe couplings. SINGER, O., Sissach, Basle, Switzerland. March 24, 1933, No. 8980. Convention date, Sept. 29, 1932. [Class 99 (i).] Means for coupling a filling nozzle A to a fuel tank comprise a collar b slidable on the nozzle and carrying hooked levers c adapted to engage the tank inlet D on movement of the collar under the action of a spring f. The levers are swung into engagement by inclined guides e on the nozzle, and are held in the inoperative position by a latch g engaging the collar. In a modification Fig. 4, pins m on the collar b engage inclined slots in the levers c, which are pivoted on the nozzle. A latch p engages a projection o on one of the levers when the coupling is disengaged.
Patent GB-766527-A (GB)
Title: Improvements relating to wheel tyres
IPC: B60C11/20
Filed: 1955-03-28
Abstract: 766,527. Anti-skid tyres. DAIMLER-BENZ AKT.-GES. March 28, 1955 [March 27, 1954], No. 8985/55. Class 144 (2). In a tyre having an anti-skid tread, such as continuous circumferential ribs 11 separated by grooves 12, continuous wire helices are embedded circumferentially in the ribs 11, the helices comprising a repeating series of turns 13, 14, 15 of different diameters having their radially outermost portions at different depths below the tread rib surface 16. The wire may be a smooth single strand with three turns 13, 14, 15 in each series having successively smaller diameters disposed with their radially inner portions on a common circle as shown in Fig. 1.
Patent GB-665759-A (GB)
Title: Improvements in or relating to magazine fuse holders for electric circuits
IPC: H01H85/26
Filed: 1949-04-01
Abstract: 665,759. Fusible cut-outs. HUNT, F. H. D. April :3, 1950 [April 1, 1949; May 17, 1949]. Nos, 8988/49 and 13164/49. Class 38 (i). A magazine fuse holder comprises a base 10 having a cylindrical upstanding boss 11 upon which is rotatably mounted an annular member 30 provided with fuse links 32 in recesses 31 therein. the boss and the member 30 having co-operating contacts 19, 20, 35 so that by rotating the member 30 a spent link may be replaced in the circuit by a whole one. The boss has sockets 13, 14, 15, 16 of which the sockets 15, 16 are connected to the spring plunger contacts 19, 20 which project slightly from the surface of the boss, the socket 15 being split so that one portion thereof may be connected to the line lead and the sockets 13, 14 connected to the earth and neutral leads. The sockets a.re asymmetrical to receive the pins of a plug connected to the load. A. cover-plate having a, central aperture for all the plug pins is arranged on the member 30 so that it cannot be removed unless the plug has been previously withdrawn. According to the second Provisional Specification a switch may replace the plug, and the first Provisional Specification states that the fuse links are mounted in recesses in the cylindrical member which is rotatable in the annular member and has contacts to engage co-operating contacts on the base of the annular member.
Patent GB-185148-A (GB)
Title: Improved manufacture of storage batteries
IPC: H01M10/12
Filed: 1921-03-23
Abstract: 185,148. Wade, H., (Hazelett Storage Battery Co.). March 23, 1921. Electrodes; separators.-The grids 10 of a storage battery are made of thin sheet material such as lead from 3/64 to 1/32 of an inch in thickness. The active material is held in place by separators 30 consisting of plain sheets of fibrous material such as paper, each sheet being slightly larger than the electrodes so that it projects beyond the electrodes in all directions. The separators swell when immersed in electrolyte, the projecting edges coming into contact as shown at 30<a> thus completely enclosing the grids and forming supports for keeping the grids at a distance from the bottom of the container. The latter may also be provided with supporting-ribs. In a modified construction the separators are formed by a continuous strip of paper folded round the electrodes. Fig. 10 shows an apparatus for making and pasting the grids. A melting-pot 42 for the lead, which may be electrically heated, is situated above a revolving drum 40 which is provided with projections or cavities &c. The lead' issuing from the pot 42 solidifies on the drum and forms a continuous strip which after being pasted is cut up into separate electrodes by a shear 81. The drum 40 may have a smooth surface, the lead sheet thus formed being perforated by a rotary punch 44 and roller 45. The lead strip is separated from the drum 40 by a stripper 58, and after passing through a spray cooling-device 56 passes over a guide 60, over which also passes a strip of paper from a roll 64 to form a backing for the grids, which then pass beneath a paste-receptacle 65 having a lip 66. A second strip of paper is then led from a roll 70 over the upper surface of the pasted grids, and moisture is squeezed out by rollers 72, 74. The roller 72 is actuated by a ratchet and pawl 75 connected to the fly-wheel of the shear 81. The separated grids with their paper backings are then placed in a box and secured together by a rubber band &c. and then removed and formed in the usual way.
Patent GB-973431-A (GB)
Title: Improvements relating to the manufacture of inflatable articles
Inventor: NICHOLLS BRYAN FREDERICK
IPC: B29C33/02
Filed: 1960-03-15
Abstract: 973,431. Moulding inflatable balls. METTOY CO. Ltd. March 15, 1961 [March 15, 1960], No. 9080/60. Heading B5A. A hollow inflatable ball 10 is moulded by charging a mould 24, which has a protrusion 26 of material with a higher coefficient of thermal conductivity than the mould wall, with a predetermined quantity of heat-formable liquid plastic resin material, e.g. polyvinyl chloride plastisol, heating the mould and simultaneously heating the protrusion to form a thicker valve housing 12. The ball may be formed by slush moulding or by rotating the mould about a plurality of axes, then it is removed from the mould while still warm and pliable and a valve unit 14 is inserted through a passage 13. The protrusion 26 extends out through the mould wall 28 and is insulated from it by an asbestos plug 29. A thin copper disc shaped to provide parallel vanes 32 or a number of parallelly disposed discs may be attached to an outward extension of the protrusion to gather heat.
Patent GB-766111-A (GB)
Title: Improvements in or relating to underdraught fires for domestic fireplaces
Inventor: COX JOSIAH
IPC: F24B1/19
Filed: 1955-03-29
Abstract: 766,111. Air supply to fireplaces. JONES & CAMPBELL. Ltd. March 29, 1955, No. 9098/55. Class 126. The lining of an ashpit below the hearth level of an open fireplace is provided with a detachable nozzle which can be locked in position in an opening in the front wall of the ash pit after it is in place to provide an underfloor air supply. The front wall 12 of the ash pit, which extends upwardly to form an ash deflector 34 resting on feet 35, has an aperture below floor level surrounded by a shoulder 19, Fig. 6. Radial projections 16 on the nozzle 10 pass through gaps in the shoulder 19, and the nozzle is locked in position by engaging the shoulder 19 between projections 16 and a flange 15 axially spaced from the projections. A damper 24, operated by a spindle 29 carrying a toothed operating arm 28, Fig. 5, engaging a toothed quadrant 27 on a blade 25 pivoted to the front wall 12 of the lining and carrying the damper 24. A tangential projection 31 rides on a guide 32 and a stop 33 limits the movement of the damper.
Patent GB-287857-A (GB)
Title: Improvements relating to elastic wheels for vehicles
IPC: B60B9/06
Filed: 1928-03-26
Abstract: 287,857. Martinez, T. S. March 26, 1927, [Convention date]. Spring wheels. - The tyre-carrying rim 8 is space. from the wheel-body 1 by metal springs 12, or rubber buffers 12<1>, and fitted with trunnions 7 serving as guides for spoke-elements 4 which are pivoted at 3 to the wheel centre. Similar cushioning-members 10 or 10<1> are fitted between the arms 4 and stops 11, 11<1> on the inner rim 5.
Patent GB-821285-A (GB)
Title: Means for controlling the supply of liquid fuel to a gas turbine
Inventor: WARNE EUGENE HAROLD
IPC: F02C9/16
Filed: 1956-03-24
Abstract: 821,285. Gas turbine plant. LUCAS (INDUSTRIES) Ltd., J. March 21, 1957 [March 24, 1956], No. 9258/56. Class 110 (3). [Also in Group XXIX] A gas turbine fuel supply system having a fuel supply passage connected at its ends to a fuel pump and burner respectively, comprises a constriction in the passage to set up a pressure difference, a bypass to divert fuel from the upstream side of the constriction to a sump or the inlet side of the fuel pump, an initially closed valve at the inlet end of the by-pass which is responsive to the pressure difference across the constriction for controlling the flow to the by-pass, a valve for controlling the outlet end of the by-pass, a chamber between the ends of the by-pass containing a pair of diaphragms carrying the closure members of the two valves and a passage between the discharge end of the fuel passage and the part of the valve chamber between the diaphragms. Fuel from a pump c passes to the burner d through a passage b containing a restriction e. A by-pass j containing a restriction k connects the passage b before the restriction to an outlet # connected to a sump or the inlet side of the pump. The inlet f out outlet g are controlled by closure members o, q mounted on diaphragms h, i. The compartments between the diaphragms are connected to the passage b downstream of the restriction e by a passage r containing a restriction s. A vent passage w controlled by a closure member z is also provided. The member z is carried by a lever 2 actuated by a speed governor or other means relating to a turbine operating condition. At rest and during starting the member o is held on its seat by a spring p and the member q may be in either the closed or open position. When the turbine is rotated by the starter motor the pressure drop across the restriction e is insufficient to open the member o. As soon as the turbine accelerates the pressure difference rises and the member o is opened. A part of the fuel then passes through the passage j to the outlet #. The relative amounts passing to the outlet v and the burners d are determined by the ratio of the orifices e, k and the spring t or u.
Patent GB-130937-A (GB)
Title: Improvements in Packing for the Rods, Spindles, Pistons or Plungers of Air and Gas Compressors, Pumps, Fluid Pressure Engines, Valves and the like.
Inventor: THOMSON EDWARD ALLAN
IPC: F16J15/18
Filed: 1919-04-11
Abstract: 130,937. Thomson, E. A. April 11, 1919. Addition to 127,521. Packing, compound metallic and non-metallic. -Packing for piston-rods, valve spindles, or the like, and more especially applicable to the invention described in the parent Specification, is of the kind in which cupped rings are employed together with expansion rings of rubber, leather, or the like, supported by bearing-pieces, and the invention consists in making the expansion rings L with lateral rings L<1> which extend into contact with the surfaces packed. Fig. 2 shows the packing applied to a piston, the two expansion rings being arranged oppositely, and each provided with a cupped ring G supported by a bearing-piece 0. Sets of rings may be used.
Patent GB-474150-A (GB)
Title: Improvements in and relating to insulation for heat, cold and sound
IPC: E04C2/16
Filed: 1936-04-27
Abstract: 474,150. Paper. AUBANEL, J. E., and ALABASTER, G. H. April 27, 1936, No. 9328/35. [Classes 96 and 140] [Also in Group XIII] Superimposed sheets of thin crÛped paper of open gauzy texture, preferably fireproofed, enclosed in a waterproof covering, is used as an insulating panel. Interposed sheets of stiffer corrugated material, such as cardboard, may be used to prevent displacement of the packing. A suitable fireproofing solution comprises ammonimn sulphate, boric acid and borax. Specifications 398,205 and 432,274, [both in Group XIII], are referred to.
Patent GB-927189-A (GB)
Title: Improvements in and relating to electric light projectors
IPC: F21V21/00
Filed: 1961-03-14
Abstract: 927,189. Supporting electric lamps. M. C. HARLEY. March 13, 1962 [March 14, 1961], No. 9332/61. Class 75 (3). A mounting for an electric projector lamp comprises a fixed horizontal spindle carrying rigidly a disc or sector having a circular contour concentric with the spindle and a locking member carried by a part rigid with the projector casing and operable by an external knob or handle. The projector comprises a cylindrical casing d in which is mounted a casting c supporting a reflector b and lamp a. A spindle f passes through bearings in the casting and is mounted rigidly in a yoke freely rotatable in a horizontal plane on a mast h. A threaded member n passing through a bracket p on the casting engages the periphery of a sector i rigidly secured to the spindle f and is operable by an external knob o. The spindle also carries an arm j connected to the casting by a spring m to counterbalance the projector. The sector i may be replaced by a disc and the member n by a cam operated by an external handle.
Patent GB-1281441-A (GB)
Title: Electrical heating apparatus
Inventor: SMILLIE GEORGE HORN
IPC: G05D23/24
Filed: 1968-09-13
Abstract: 1281441 Automatic temperature control systems TRONAPPLICS Ltd 8 Sept 1969 [13 Sept 1968] 9443/70 Divided out of 1270250 Heading G3R An apparatus has a first heating element to which voltage pulses of one polarity are applied and a second heating element to which pulses of opposite polarity are applied, the sets of pulses being substantially 180 degrees out of phase. A thermostatic switch 26 located in a room energizes an electric heater 22, a fan motor 14 and a control circuit including a thermistor 28, arranged in a bridge network and located in an air circulation duct, which below a determined temperature causes transistors 38, 54, 62 to block thus allowing a potential across a resistor 64 to rise and a thyristor 34 to conduct passing current to a heater 24a which through a circuit, even numbers 94-100 fires a thyristor 82 energizing another heater 24b in anti-phase. A capacitor 66 ensures conduction of thyristor 34 near to voltage zeros. The transistors are fed with half waves through a diode 38, a smoothing capacitor 40 and stabilizing Zener diode 41 being provided. In an alternative arrangement Fig. 3 (not shown) the operation of transistor 62 is reversed and the thyristor 34 is fired on the closure of a reed relay (78, 80) the thyristors in this circuit also being arranged in a lead-trail arrangement. The circulating duct may form part of a free standing heater or cooler situated in the room.
Patent GB-211091-A (GB)
Title: Process and devices for the rupture of electric current
IPC: H01H33/16
Filed: 1923-04-06
Abstract: 211,091. Chilowsky, C., and Saphores, J. Feb. 12, 1923, [Convention date]. Sparking, preventing; liquid resistances.- Relates to the sparkless interruption of electric circuits by first introducing into the circuit an electrolytic cell which, by polarization, reduces the current to a safe switching value as described in Specification 195,066. Instead of employing mechanical means for removing the film from the electrodes, electrodes and electrolytes are chosen of such a character that the film forms for a moment only and immediately disappears by chemical or electrochemical action. Suitable anode metals are antimony, lead, bismuth, zinc, cadmium and magnesium or alloys of these may be used. Suitable electrolytes are sulphuric acid and its salts, phosphoric acid and its salts, alkaline carbonates, potash and soda. The addition of alcohol to the electrolyte increases the breaking capacity of each cell. Suitable combinations are, for example, antimony and dilutesulphuric acid, magnesium and sodium phosphate, zinc or cadmium and a solution of potassium carbonate, lead and strong sulphuric acid. A combination of cells is shown in Fig. 3 in which the cathode C' of the first cell is composed of a cylindrical conducting mass having two recesses divided by the cylindrical wall P<1>. The recesses, which intercommunicate through the hole 0, contain the electrolyte, the portion in the outer channel serving as a reserve. The anode A<1>, which may be integral with the cathode C<2> of the second cell, extends into the inner channel. Insulating caps S serve to cover each cell. In the construction shown in Fig. 4, the battery of cells is made up of a number of spaced cones with electrolyte between them in the manner of an electrolyte lightning arrester. The Specification as open to inspection under Sect. 91 (3) (a) includes tantalum among the suitable metallic anodes. This subject-matter does not appear in the Specification as accepted.
Patent GB-472840-A (GB)
Title: Improvements in or relating to electric relays
IPC: H01H51/22
Filed: 1936-03-31
Abstract: 472,840. Electromagnetic interrupters and light-current relays. ASSOCIATED ELECTRIC LABORATORIES, Inc. March 31, 1936, No. 9521. Convention date, April 26, 1935. [Class 38 (v)] A polarized relay or interrupter has a substantially cylindrical core arranged to be rotatable about its own axis within an operating coil, the core being provided with an armature extending radially into the magnetic field of the polarizing magnet and being supported by a resilient suspension also serving to maintain it normally in its unoperated position. As shown in Figs. 2 and 3, the armature assembly consists of a core 15 passing through the winding 11 and radially-extending magnetic members 16, 17 attached to the core, the free ends of the members, passing through the non-magnetic base plate 2 to air gaps between unlike poles of fixed permanent magnets 3, 4 adjustably secured to the underside of the base. The armature assembly is carried by flat springs 18, 19 attached to the ends of the core and clamped in semi-cylindrical members 26, 27, between blocks 20, 21 and 22, 23 so that the free end of one of the armature members 17 is normally out of engagement with sets of spring contacts 56, 57 but engages one or other of these sets according to the direction of current in the coil 11, being returned to normal when the current falls below a predetermined value by the torsion produced in the blade springs 18, 19. Thus if the coil 11 is energized by A.C. a rapid vibration of the armature takes place, contact springs 56, 57 being engaged alternately. The positions of these springs may be adjusted by screws 52, 53. The armature may, alternatively have an unsymmetrical adjustment between the contact springs either by adjustment of the anchored ends of the blade springs 18, 19 or by asymmetric adjustment of the permanent magnets, in which case the adjacent magnet poles hold it normally at one side of the central position. The core 15 is just slightly smaller than the bore within the coil 11 to permit of its free rotation therein.
Patent GB-668368-A (GB)
Title: Improvements in or relating to magnetic fluxmeters
Inventor: MITCHELL WILLIAM HENRY
IPC: G01R33/038
Filed: 1948-04-06
Abstract: 668,368. Magnetic tests of measurements. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 4, 1949 [April 6, 1948; Dec. 22, 1948], Nos. 9566/48 and 33093/48. Class 37. A flux meter comprises a moving element of finelydivided or thin laminae magnetic material. In one embodiment, Fig. 2 (9566/48), a thin coat of magnetic material 3 is carried on the outer surface of two vanes 2 diametrically attached to a pivoted light metal cylinder 1, free to rotate against control springs 7, the amount of rotation being indicated, by a pointer 5. In a modification, Fig. 1 (Comp.), the surface of the cylinder 20 is recessed in two regions 21, 22 and filled with iron dust. In another embodiment, Fig. 1 (33093/48), a solid brass cylinder 1 has a portion removed so that a diameterical surface 4 is exposed, which is covered with powdered iron dust, and the remainder of the space refilled with brass to restore the original contours. The cylinder is pivoted to rotate against a spring 6 inside a non-magnetic housing 5. When placed in a magnetic field, the rotation of the cylinder 6, as indicated by an attached pointer 7, measures the strength of the field. The coating of iron dust may be replaced by a thin sheet of magnetic material, or a corresponding part of a hollow cylinder may be filled with iron dust, and flattened to an elliptical cross-section.