baber/WOPTO huggingface dataset:
Patent GB-745491-A (GB)
Title: Improvements in and relating to electric signalling apparatus
Inventor: FELIX MICHAEL OTTO
IPC: H04M11/00
Filed: 1953-11-11
Abstract: 745,491. Manual exchange systems. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Oct. 11, 1954 [Nov. 11, 1953], No. 31318/53. Class 40 (4). [Also in Group XL (c)] An exchange is linked by radio to a substation and responds to a calling carrier signal only after a delay so as to avoid spurious calls due to radio " noise." To ring the operator, the carrier is interrupted either by momentarily replacing the receiver or by pressing a button on the set. At the end of a call, a clearance signal is given to the operator automatically. At the exchange terminal of the radio link, slow-to-operate relay RS responds to the calling carrier and is followed by A and B. On interruption of the carrier, ringing current from terminals 18, 19 is transmitted to exchange 15 during the delay in release of B. A burst of ringing current is transmitted in the same way when the substation clears. When the exchange calls the substation, line relay A responds to ringing current, rectified at 20, and switches on the transmitter 11 for the duration of the ringing current.
Patent GB-1070653-A (GB)
Title: Improvements in and relating to roller conveyors
IPC: B65G47/26
Filed: 1964-08-04
Abstract: 1,070,653. Roller conveyers. MATHEWS CONVEYER CO. Ltd. Aug. 4, 1964 [July 30, 1963], No. 31332/64. Heading B8A. A roller conveyer driven by an endless belt 5 has at least some of its conveying rollers 12 contoured so as to have an eccentric belt engaging section 15 such that only a portion 16 of its surface is normally engaged by the belt 5. In normal use the kinetic energy of a conveyed article 14 is sufficient to start the rollers 12 rotating and thus receiving drive from the belt 5 once in each revolution (Fig. 5). Articles. stopped by hand or a barrier over contoured rollers 12 will have each roller rotated by the drive belt 5 until the driving portion 16 leaves the belt and the rollers stop (Fig. 7). Articles stopped may be restarted by a slight forward or rearward movement to bring driving portions 16 into contact with the belt 5 or a snub roller 17 may be pivotally mounted about a shaft 18 and moved by a handle (not shown) to lift the belt 5 temporarily into contact with the non- driving surface portion of the rollers 12a, 12b (Fig. 10). Simultaneous restarting of a whole section of the conveyer may be accomplished by a set of interconnected snub rollers such as 17. Articles may be restarted one at a time and at spaced intervals by use of a drive belt 5 with a thickened portion 20, Fig. 11 (not shown), the article spacing depending on roller spacing and belt speed.
Patent GB-967978-A (GB)
Title: Improved photoconductive electrophotographic materials
IPC: G03G5/08
Filed: 1962-08-15
Abstract: To improve its photo-electric properties zinc oxide is treated with an organo-silicon compound chosen from those conforming to either of two specified general formulae respectively covering unsubstituted or hydrocarbon substituted straight chain or cyclic siloxanes containing up to six silicon atoms, and silane substituted by at least one alkoxyl radical and optionally by various hydrocarbon radicals. Preferred compounds have boiling points of not greater than 200 DEG C.  The quantity used preferably lies between 1 and 40% by weight based on the weight of oxide.  It is not known whether or not a chemical reaction occurs between the oxide and the silicon compound. Best results are obtained if the oxide is heated to a temperature above the boiling-point of the organo silicon compound and then stirred in contact with the vapour of the latter.  In the examples the addition of the silicon compound in its vaporized form takes some hours and stirring is continued for a similar length of time after the addition has been completed. In the examples, the organo-silicon compounds used are hexamethyldisiloxane, octamethylcyclotetrasiloxane, tri-isopropoxysilane, methyltri-ethoxysilane, methyldi-isopropoxy silane, and dimethyl diethoxysilane.  Other preferred compounds are listed.  The Specification states that the heated oxide may be used in toners for developing electrostatic charge images, in unspecified semi-conductor layers, and in electrophotographic plates.  All the examples relate to electrophotographic plates and in these the treated oxide is dispersed in an insulating resinous binder, if desired with the addition of optical sensitizers such as dyestuffs, and is coated on to a relatively conductive support. Specifications 834,502, 874,133 and 896,610 are referred to.
Patent GB-485564-A (GB)
Title: Improvements relating to magnetically-operated electric switches
IPC: H01H29/18
Filed: 1936-11-16
Abstract: 485,564. Magnetic switches ; mercury switches. CIANCHI, A. Nov. 16, 1936, No. 31352. [Class 38 (v)] A sealed vessel 1, containing mercury or other contacts which are brought into or out of engagement by the movement of an armature 8 within the vessel, is mounted within a protective casing 12 and the movement of the armature is brought about by the movement by hand of an external magnet 13 which is slidabIe on or pivoted with respect to the casing 12. In the form shown in Fig. 1, the magnet 3 is U-shaped and is provided with inwardly-projecting polepieces which slide in vertical grooves in the casing 12. When the magnet is moved down into the position shown, the armature 8 is pulled down, and mercury flows through an opening 7 so as to complete a circuit between electrodes 5 and 6. Fig. 8 shows a modification in which the vessel 1 is mounted on a base 11 and the magnet 13 is carried by a " dolly '' 20. The Provisional Specification refers to Specifications 453,229, 481,289, 482,947, and 484,987.
Patent GB-185353-A (GB)
Title: Improvements in or relating to revolving barrels or like receptacles for liquid
IPC: A01J15/06
Filed: 1921-11-23
Abstract: 185,353. Mortensen, F. Nov. 23, 1921. Lids. - Relates to means for preventing the escape of liquid between the lid and the edge of the body in butter churns and other rotating barrels and receptacles. According to the invention, the outer surface b<3> of the funnel-shaped lid b, which has a central opening in which an agitator may revolve, is provided with a " throwing ring " or projecting edge d above which is a groove c ; cream or like particles rising on the outside of the lid to the edge d are thrown back again into the recepta.cle. Any particles thrown against the internal surface b<2> of the lid collect in the groove d<1> (the reverse side of the projection d) and either run back directly into the receptacle or arrive therein after passing through the small openings e.
Patent GB-457418-A (GB)
Title: Universal joints and universally-jointed shafts
IPC: F16D3/38
Filed: 1935-11-16
Abstract: 457,418. Making universal joints. HARDY, SPICER, & CO., Ltd., and SPARROW, W. E., Birch Road, Witton, Birming- ham. Nov. 16, 1935, No. 31775. [Class 83 (ii)] [See also Group XXIV] The V-shaped yokes of a Hooke's joint are formed from a substantially flat sheet 11 of metal, by pressing its opposite ends to form spaced arms 12, which are pierced and drawn out to form collinear bossed eyes for receiving the trunnions of the intermediate member, not shown. The middle portion 13 of the yoke is dome shaped, and the yoke is spigoted at 16 into, and riveted or bolted at 14 to, a sleeve 18, welded or splined to a motor-vehicle propeller shaft.
Patent GB-838083-A (GB)
Title: Improvements in or relating to jet propulsion nozzles
Inventor: BROWN DAVID MORRIS
IPC: F02K1/40
Filed: 1956-10-18
Abstract: 838,083. Jet-propulsion nozzles. ROLLSROYCE Ltd. Oct. 10, 1957 [Oct. 18, 1956], No. 31791/56. Class 110 (3). In a jet-propulsion nozzle comprising a tubular outer wall and a series of circumferentially-spaced elements extending radially inwards from the inner surface of the outer wall to define from adjacent the nozzle inlet at least to the throat a plurality of paths for the hot gas flowing through the nozzle, the number of paths being selected to reduce the noise level in operation, each of the elements defining the gas paths includes a pair of circumferentially-facing walls and an axially facing wall joining the downstream ends of the circumferentially-facing walls, and the circumferentially-facing walls have axial extensions beyond the outlet of the nozzle to delay mixing of air flowing into the zones behind the axially-facing walls with the hot gases leaving the nozzle. The nozzle, Figs. 1 and 2, comprises a frusto-conical outer wall 10 to which are attached a series of elements 12 to form a plurality of trough-like paths for the hot gases leading from the inlet 10a to the outlet 10b. Each of the elements 12 has a pair of circumferentially-facing walls 12a and an axially-facing end wall 12b. The walls 12a are provided with extensions 12c beyond the outlet of the nozzle. The extensions 12c are contained in axial planes and extend radially beyond the perimeter of the nozzle at its outlet. In a modification, the members 12 do not extend to the nozzle axis. The wall forming the inner surface of the member 12 may also be extended axially. These extensions may form part of a cylinder coaxial with the nozzle. The invention may be applied to convergent-divergent nozzles in which case, the extension will be downstream of the divergent section of the nozzle. Specifications 802,123, 811,455 and 823,949 are referred to.
Patent GB-377059-A (GB)
Title: Improvements in or relating to safety devices for elevators
IPC: B66B5/18
Filed: 1931-11-18
Abstract: 377,059. Safety devices for lift cages. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.- (Assignees of Dunlop, J. ; 513, South Prospect Avenue, Park Ridge, Illinois, U.S.A.) Nov. 18, 1931, No. 31987. Convention date, Nov. 26, 1930. [Classes 78 (iii) and 78 (v).] In an elevator safety device of the kind in which stationary guide rails are gripped by members on the elevator, the means for actuating the rail-gripping members is controlled by means directly responsive to an abnormal deceleration of the elevator whereby a predetermined deceleration is automatically maintained. When overspeeding of the car C, Fig. 1, occurs the governor rope 11 is held stationary by pivoted grips 17, 18, which are .actuated by the governor sleeve through a lever 19 and rope 20. During continued movement of the car, a ball 14 on the rope 11 becomes disengaged from a spring clip 15 on the car and a rope 27, connected to the rope 11, is unreeled from a drum 31, Fig. 3, underneath the car so as to rotate the drum and move threaded shafts 38, 43 outwards. Wedges 36, 37, connected directly to the shaft 38 and by a piston 41 in an oil-containing cylinder 42 to the shaft 43 respectively, engage pivoted jaws 32, 33, and move shoes 51, Figs. 2 and 3, slidably mounted therein, against guide rails 34, 35. If the retardation exceeds a predetermined rate, the inertia of a weight 47 ,tilts a lever 46 and opens a spring-controlled valve 44 to release the pressure in the cylinder 42. The pressure exerted by the wedges 36, 37, thus diminishes until the deceleration is reduced to the predetermined rate when the valve 43 closes. If the speed of the car is not reduced sufficiently as it approaches a terminal, a roller 54 on the car engages a pivoted cam 24, projected in the hatchway by a rope 21 connected to the governor sleeve, whereby a lever 53, rotated clockwise, pulls a rope 55, Fig. 2, and lifts the shoes 51 into engagement with the rails 34, 35, to retard the movement of the car. If, however, the speed is reduced sufficiently the governor will permit the cam to retract from the hatchway so as to allow free passage of the roller 54. If a car overruns a terminal and approaches the bottom of the hatchway, the shoes 51 engage an enlarged portion 58, Fig. 2, of the guide rails and the maximum allowable braking is applied to stop the car.
Patent GB-1087626-A (GB)
Title: Polyepoxide powder coating compositions
IPC: C08J3/16
Filed: 1966-07-18
Abstract: A process for preparing fluidizable polyepoxide coating compositions comprises the steps of (1) mixing 100 parts by weight of at least one glycidyl polyether of 2,2-bis(4-hydroxyphenyl) propane having an average epoxy eq. wt. of 400-4000 with 0.1-25 parts by weight of a polymeric fatty acid at a temperature of 90-180 DEG  C, (2) adding 0.1-10 parts by weight of a base in aqueous solution at 80-120 DEG C. with rapid stirring and emulsifying, (3) cooling the resin emulsion obtained and allowing the particles to solidify, and (4) separating the resin powder from the cooled suspension. Inactive or slow-acting (at 90-120 DEG  C.) curing agents, catalysts, pigments, fillers and/or thixotropic agents may be added in step (1) or later. Other curing agents may be added after the preparation of the powder.ALSO:Pulverulent epoxy resin compositions which have been prepared by (1) mixing a glycidyl polyether of 2,2-bis(4-hydroxyphenyl) propane with a polymeric fatty acid at 90-180 DEG C (2) adding an aq. solution of a base at 80-120 DEG C with rapid stirring and emulsifying, (3) cooling the emulsion and allowing the particles to solidify and (4) separating the resin powder (see Division C3) may be applied to surfaces such as steel by means of a fluidized bed, a compressed air spray gun, or electrostatically.
Patent GB-404435-A (GB)
Title: Improvements in reeds for beaming frames
IPC: D02H13/16
Filed: 1932-11-16
Abstract: 404,435. Beaming yarns. DURKIN, T. J., 9, Pleasant Springs, Middleton, Lancashire. Nov. 16, 1932, No. 32342. [Class 142 (iv).] In reeds for beaming and similar machines in which the dents are spaced by springs placed between them and are expanded and contracted by a screw in the lower part of the reed, two independent adjusting screws E are inserted one in each end section without extending into the central section. Each screw is provided with a handle e, is mounted in a pillar E<1>, and passes through a bush d in an end stay D. The end sections a<1>, a<2>, Fig. 2, are inclined towards the central section A.
Patent GB-245440-A (GB)
Title: Cutter with inserted blades for wood working
IPC: B27G13/10
Filed: 1925-12-22
Abstract: 245,440. Laurent, J. B., and Dubois et J. du Gonnet, J., (trading as Soc. en nom collectif Dubois et Gonnet). Dec. 31, 1924, [Convention date]. No Patent granted (Sealing fee not paid). Cutters. - A moulding cutter with inserted blades comprises a holder a formed in one with several arms, each terminating in a slot with dovetail jaws d to grip the blade beld together by a set screw g taking into the lower jaw and pressing on the upper jaw by a collar o. The holder is mounted directly on the cutter spindle.
Patent GB-506179-A (GB)
Title: Improved means for preventing the formation of ice on aircraft
IPC: B64D15/02
Filed: 1937-11-24
Abstract: 506,179. Preventing formation of ice on aircraft. ELLOR, J. E. Nov. 24, 1937, No. 32396. [Class 4] To prevent the formation of ice on aircraft, the air-stream for cooling the engine enters through a diverging inlet and after becoming heated by the engine, which may be of eithei air-cooled or liquidcooled type, passes along conduits, at the leading edges of the wings or at other parts, and leaves by converging outlets The kinetic energy of the stream is thus first con verted into pressure energy and then re-converted to kinetic energy, the air heated by the engine or radiator being taken from a point at low pressure and velocity. Air enters at diverging inlets 13 above the two engines, and after passing over the radiators 11 passes by converging conduits 14, 15 to outlets 17, 18. In Fig. 4 (not shown), the aircraft has a single engine in the nose with a single radiator below it, and in Fig. 6 (not shown) a single engine has two radiators. The engine oil-cooler, if provided, may also be situated in the passage.
Patent GB-262956-A (GB)
Title: Improvements in or relating to self-playing or keyboard stringed instruments
IPC: G10F1/18
Filed: 1925-12-23
Abstract: 262,956. Wade, H., (Mills Novelty Co.). Dec. 23, 1925. Alternating-current motors. - A violin &c. operated by alternating-current has an induction motor for rotating the bows or sounders, which motor has a number of windings selectively connected in the circuit to determine the speed of the motor. The motor consists of a squirrel-cage rotor 27, Fig .4. and a laminated stator 30 with teeth 32, 33 on which are provided four-pole series windings 34, bipolar series windings 35 of smaller number and larger wire, and split-pbase series windings 36. The normal motor circuit is from main 40, Fig. 6, through lead 42, coils 34, lead 44 and coils 35 to main 41. In this circuit the coils 34 are dominant. To increase the speed, a contact 47 or 47<a> connects the man 40 to lead 44, shunting out the coils 34. To decrease the speed, a contact 49 or 49<a> connects the main 40 to the coils 36, the connection through the coils 34, 35 remaining. Specification 262,603 is referred to.
Patent GB-1029235-A (GB)
Title: Improvements in and relating to the steam reforming of hydrocarbons
Inventor: DAVIES PHINEAS
IPC: C01B3/40
Filed: 1961-09-11
Abstract: A continuous process for steam reforming hydrocarbons boiling at temperatures up to 350 DEG  C. comprises reacting hydrocarbons with steam at an elevated temperature over a catalyst composition containing 0.01% to 20%, calculated as the metal, of a platinum group metal or a compound of the metal reducible thereto and a refractory inorganic oxidic material.  The platinum group metal may be rhodium, ruthenium, palladium, osmium, iridium, or platinum.  The refractory oxide may be alumina, magnesia, or zirconia, preferably gamma-alumina is used.  The operating temperatures may be from 1 to 50 atmospheres absolute.  The steam ratio may be from 1.5 to 6 molecules of steam per atom of carbon in the reactant hydrocarbon.  Examples of the metal compounds are rhodium, platinum and palladium chlorides, palladium nitrate, and chloroplatinic acid.
Patent GB-300182-A (GB)
IPC: H04R3/00
Filed: 1928-11-07
Abstract: 300,182. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Hanna, C, R.). Nov. 7, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Magnetic instruments ; diaphragms.-In a telephone transmitter of the moving-coil type, means are associated with the moving coil to produce a force proportional to the velocity of the moving coil for damping the movement so as to facilitate constant response over a wide frequency range. As shown in Fig. 1, the transmitter comprises a corrugated diaphragm 5 mounted on a flexible annulus 6 and carrying an aluminium ring 10, and a telephonic coil 12 supported on a tube 13. The coil may be supported on an extension of the ring 10, the extension being provided with saw cuts to prevent the circulation of eddy currents. The ring 10 and the coil 12 are supported within an annular air gap formed between the central pole 2 and an annular pole-piece 4 mounted within the end of a magnetic casing 1. A ring 17 of packing material such as felt, wool &c. is disposed between the energizing coil 16 and the pole-piece 4 to prevent resonance effects. When the diaphragm is vibrated by sound waves, voltages proportional to the velocity of vibration are induced on the coil 12 and ring 10, that in the ring giving rise to eddy currents which react with the magnetic field to produce damping. In order to prevent the eddy currents in the ring 10 from causing induced distorting currents in the coil 12 a copper flange 14 is mounted on the annular pole 4. In a modification, the flange 14 is replaced by a stationary coil which is connected in series with the coil 12. The ring 10 also may be replaced by a coil which may be closed through a low resistance element or connected in series with an inductance arranged to offer increasing impedance at higher frequencies. In a further modificaion, the moving coil may act both as a generator and a damping device. The coil is connected in series with a resistance which allows the application of a variable voltage to the primary of the audio-frequency transformer.
Patent GB-447135-A (GB)
Title: Improvements in or relating to the manufacture of glyoxal sulphate
IPC: G03B41/10
Filed: 1934-11-12
Abstract: Glyoxal sulphate is prepared by slowly adding tetrachlorethane to oleum of over 25 per cent concentration in the presence of a heavy metal salt as catalyst.  In an example, 65 per cent oleum is used and mercurous sulphate is the catalyst.  Copper sulphate is also mentioned.
Patent GB-341574-A (GB)
Title: Improvements in wireless reception apparatus
IPC: H01Q21/00
Filed: 1929-10-28
Abstract: 341,574. Wireless receiving apparatus. LANCHESTER, F. W., Dyott End, Oxford Road, Moseley, Birmingham. Oct. 28, 1929, Nos. 32632 and 32894. [Class 40 (v).] Interference between two broadcast programs or radio-telephonic transmissions is overcome by using two independent aerials tuned to the respective transmissions and by combining the signals received thereon through the medium of a potentiometer or variable resistance so that the desired signal is heard and the undesired signal is balanced out. As shown in Fig. 1, the aerials A are spaced apart and each is connected through a tuned high-frequency amplifier B, C to a detector valve D. One detector employs a grid-leak, and the other the anode-bend method of rectification ; or other means such as oppositely connected transformers may be employed for obtaining the rectified signals in opposite phase from the two aerials. The rectified signals are applied to opposite ends of a resistance P, and the telephone T (or the input of further amplifiers) is connected between earth E and a slider on the resistance P. By adjustment of the slider, a point is found where one signal alone can be heard, and a second point where the other signal alone is heard. In a modification, the signals are combined by a resistance such as P before the detector stage, and in this case, the slider-earth circuit includes the grid circuit of a detector valve. Reversal of polarity of the signals is obtained by turning one or other aerial through 180‹. Specifications 21651/07, [Class 40, Electric telegraphs &c.], and 172,394, [Class 40 (v), Wireless signalling &c.], are referred to.
Patent GB-772813-A (GB)
Title: Method for causing the rapid drying of printed work
IPC: B41M7/02
Filed: 1954-11-11
Abstract: 772,813. Printing processes. HARDMAN & HOLDEN, Ltd., and RINSE, J. Nov. 2, 1955 [Nov. 11, 1954], No. 32649/54. Class 100(2) Set-off preventing:-A method of accelerating the drying of ink containing a compound with a carboxyl and/or hydroxyl group, comprises atomising a solution of an aluminium alkoxide or a derivative thereof or mixtures of such aluminium compounds on to the printed surface or the surface to be printed. Suitable alkoxides are aluminum isopropoxide and butoxide, while their derivatives . may be those with fatty acids, e.g., the product obtained by heating aluminium isopropoxide and stearic acid to about 150‹C., or aluminium dioleate, mono - isopropoxide, poly - oxoaluminium acylates, or aluminium alkoxide glycol derivatives. In example, sheets printed with linseed stand oil printing ink are sprayed with a 20 per cent solution of atomized dialuminium tetraisopropoxide - monodripropopylene glycolate in mineral oil in order that the sheets may be immediately piled. In a further example, paper is sprayed with a' 50 per cent solution formed by heating aluminium isopropoxide and stearic acid to about 150‹C., the paper is then printed and afterwards sprayed with a 25 per cent solution of aluminium isopropoxide to ensure rapid drying.