baber/WOPTO huggingface dataset:
Patent GB-186013-A (GB)
Abstract: 186,013. British Thomson - Houston Co., Ltd., and Hastings, H. C. March 21, 1922. Electric braking.-Motors driving trolly omnibuses and like vehicles are provided with a pedaloperated master controller for starting and accelerating, and a hand-operated direct acting motor-controller for reversing and electric braking. Irrespective of the position of the master controller 2 and of the number of resistance contactors S<2> - - S<6> which may be in use, the driver is able, by moving the hand-operated controller 1 from its forward power position, to rearrange the motor circuit for braking or reversing. The change to braking conditions opens a line contactor S', which cannot afterwards be reset except by bringing the master controller back to its starting position.
Patent GB-399769-A (GB)
Title: Manufacture of 6-bromo (or -chloro)-2:4-dinitraniline
Filed: 1933-06-30
Abstract: 6-bromo and 6-chloro-2 : 4-dinitraniline are obtained by passing elementary bromine or chlorine into an aqueous suspension of 2 : 4-dinitraniline at moderately-raised temperature, 40-60 DEG  C., with continuous stirring.  The product is isolated by filtration and is very pure.  Examples of chlorination and bromination are given.
Patent GB-477848-A (GB)
Title: Improvements in and relating to colour filters
IPC: G03C1/83
Filed: 1936-07-06
Abstract: 477,848. Colour filters. STAPLE DEVELOPMENTS, Ltd. July 6, 1936, No. 18719. Convention date, June 17. [Class 97 (i)] Filters for use in colour photography, colour kinematography, and photo-mechanical printing processes consist of a gelatin layer dyed with tartrazine and one or more layers dyed with other dyes applied to one or both faces of the tartrazine dyed layer. Examples are given of filters (1) for red, consisting of a tartrazine dyed gelatin layer which may be hardened with chrome alum, coated on one or both sides with gelatin dyed with phenosaffranin and rhodamine B ; (2) for green, consisting of the tartrazine dyed layer under (1) coated with gelatin dyed with toluidine blue and (3) for purple, as under (2) using crystal violet and methylene blue in place of toluidine blue. The tartrazine dyed layer may be used alone as a yellow filter. It is stated that silver emulsion layers exposed under these filters show a difference of grain according to the colour of the filter used.
Patent GB-1293129-A (GB)
Title: Improvements in or relating to pressure control devices for fluid flow systems
Inventor: FISHER ALAN ARTHUR
IPC: F16K17/04
Filed: 1970-04-20
Abstract: 1293129 Valves I V PRESSURE CONTROLLERS Ltd 19 April 1971 [20 April 1970] 18846/70 Heading F2V  A combined pressure reducing and relief valve has a pair of closure members 11, 13 co-operating respectively with inlet and exhaust seats and slidable on a portion 8 of rod 4 defining a chamber 23 connected at 22 to the inlet to ensure that, with diameters E, F of stem 6 and piston 8 equal, member 11 is pressure balanced. Spring 3 or a loading pressure admitted at 25 and trapped by valve member 26 acts on a piston or diaphragm 2 responsive to the pressure at outlet B or downstream of a main pressure reducing valve connected to outlet B. Excess pressure in the outlet arising after the piston or diaphragm has allowed member 11 to engage its seat causes continued rising of the piston or diaphragm, and collar 15 eventually unseats the member 13 against spring 16 interposed between members 11, 13. Diameter G of the exhaust port can equal diameter F.
Patent GB-403973-A (GB)
Title: Improvements in or relating to electronic amplifier valves
IPC: H01J31/04
Filed: 1932-07-04
Abstract: 403,973. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, RUST, N. M., 109, London Road, Chelmsford, and BRETT, G. F., 23, Cross Flatts Avenue, Dewsbury Road, Leeds. July 4, 1932, No. 18890. [Class 39 (i).] An amplifier has an anode, a cathode, a control electrode placed close to the cathode, and a screen electrode placed close to the cathode and control electrode and arranged so as to allow only a narrow or small beam of electrons to pass to the anode. As shown, the cathode consists of a short filament F, the control electrode consists of a flattened cylinder G forming a Wehnelt electrode, and the screen electrode consists of a plate A with a slit A<1>. The anode P consists of a flattened cylinder closed at one end ; it is elongated to prevent the escape of secondary electrons or it may be closed by a grid. The screen A may be maintained at the potential of the anode. In a modification the anode is a plate, and a second screen, formed as a grid, is placed near the anode and connected with the cathode so as to prevent secondary emission ; or the second screen may be in the form of a plate with a slit and maintained at zero or a low potential. In another arrangement the cathode is of hairpin shape giving emission from a point, and the control electrode G, the slit A<1> and the anode are of circular shape. Dimensions and potentials are given.
Patent GB-479737-A (GB)
Title: Cathode ray tube apparatus
IPC: H01J29/54
Filed: 1937-07-07
Abstract: 479,737. Supply systems for cathoderay tubes. LORENZ AKT.-GES., C. July 7, 1937, No. 18895. Convention date, July 7, 1936. [Class 38 (iv)] Transformer arrangements.-Interference by the transformer stray fields with the electron beam of the cathode-ray tube K is counteracted by the use in the mains supply system .of ring type transformers I, II rotatably mounted so that they may be adjusted to give minimum interference. One or more transformers may be used.
Patent GB-798726-A (GB)
Title: Improvements in means for controlling the movement of bells, or of a member strikinga stationary bell
IPC: G10K1/34
Filed: 1955-06-30
Abstract: 798,726. Bells. BLONDEAU, E. June 30, 1955 [June 30, 1954; March 3, 1955], No. 18963/55. Drawings to Specification. Class 13. A bell or clapper is directly connected to a piston in a pneumatic or hydraulic cylinder, the fluid supply to the cylinder being controlled mechanically or electrically by a pivotally mounted contact arm which co-operates with a cam or the like secured to the bell or clapper, in such a way that the piston drives the bell or clapper during a part of its swing in one direction, the bell or clapper being allowed to swing freely under gravity during the remainder of its motion. In one embodiment, Fig. 20 (not shown), the piston consists of a vane fastened to the shaft of the bell.
Patent GB-189783-A (GB)
Abstract: 189,783. Lehmann, K. A. A. Nov. 28, 1921, [Convention date]. Factory and like time-recorders, card-type; impression mechanism. - In apparatus of the individual card-type provision is made for stamping and severing a portion of the edge of two cards at one time and for releasing the main operating shaft which is adapted to be subsequently manually operated to actuate the impression mechanism. In one form of construction, Figs. 1, 2, and 3, the cards 1, 1<a> are guided in fixed guides 7, 7<a> and are held in the fully inserted position by movable spring-controlled guides 8, 8<a>. In this position the cards depress disengaging pins 2, 2<a>, pivoted to releasing levers 3, 3<a>, which are rocked on their pivots 43, 43<a> to uncover openings in guide plates 13, 13<a> to allow the locking or retaining levers 6, 6<a> secured to the main shaft 5 to pass through the openings. Each of the impression hammers 14, 14a, which are loose on the shaft 5, is under the influence of a coiled spring 25, Fig. 12, attached at one end to an abutment pin 29 secured to the shaft and normally in contact at its other end with a pin 30 on a leaf spring holder 45 secured to the shaft 5. The initial movement of the main handle 15 increases the spring tension until the abutment pin 29 strikes the lower end of a bell crank lever 28 so as to release the pawl 27 thereon from engagement with a projection 26 on the hammer whereupon the hammers are caused to impinge on the cards 1, 1<a>. A rubber cushion 47 and a leaf spring 31 are provided to ensure the rebounding of the hammer. At the same time punches or dies 9, 9<a>, operatively connected with the main shaft co-operate with matrices 10, 10<a>, to cut an additional step in the edge of the cards. In a modification as shown in Fig. 10, the cards are held by tines or studs 19, 19<a>, attached to rods 16, 16<a> pivoted at their lower ends to weighted three armed levers 17, 17<a> connected by a pivoted transverse rail 19<b> to which is secured a rod 20 adapted to release the retaining device 6 of the main shaft 5.
Patent GB-261815-A (GB)
Title: Improvements in and relating to raising and traversing gear
IPC: B66F13/00
Filed: 1925-07-25
Abstract: 261,815. Hall, T. July 25, 1925. Screw-and-nut platform load-handling appliances; jacks. -A raising and traversing gear for derailed trucks and other heavy objects comprises a pair of rails a detachably connected by end pieces b carrying a longitudinal screw c. One or more carriages e<2> provided with rollers e<3> run on the rails, and the standards of screw jacks f fit in recesses in the carriages and are secured thereto by a screw stud device f<3>. Brackets c are secured underneath the carriages and are slotted to engage the screw c. The brackets engage and hold against rotation nuts c<1> on the screw and allow the carriages to be lifted, the nuts to be rapidly spun into required positions and the carriages then re-engaged with the nuts. In operation the appliance is placed underneath the end of a derailed truck, and by means of a ratchet spanner d &c. the screw is rotated until the jacks are under a suitable part of the truck. The truck is then raised by means of the jacks and by further manipulation of the screw is aligned with the track and then lowered.
Patent GB-581156-A (GB)
Title: Improvements in and relating to the production of aryl derivatives of trichlorethane
IPC: C07C17/26
Filed: 1944-10-05
Abstract: Compounds having the general formula <FORM:0581156/IV/1> wherein X and Y represent benzene rings, substituted or not, are obtained by the condensation of benzene or a substituted derivative of benzene, having at least one free position in the nucleus, with anhydrous chloral of a purity of 93 per cent or over, the conditions of the reaction being such that: (a) the amount of benzene or benzene derivative is in excess of the stoechiometric amount, (b) oleum of not less than 20 per cent strength is used as a condensing agent, and (c) the reaction mixture is cooled, the oleum being run into the mixture over a period of at least 2 hours.  Preferably, the excess of benzene or benzene derivative is more than 20 per cent. Advantageously, one molecular proportion of anhydrous chloral is used with substantially 2.5 molecular proportions of chlorbenzene.  In examples: (1) 147 parts (by weight) of anhydrous chloral (93 to 95 per cent) and 281 parts of chlorobenzene are mixed, cooled and treated slowly for 3 hours with 508 parts of 24 per cent oleum at 18 DEG  to 20 DEG  C. to obtain a product containing 75 per cent of a  : a -di-(p-chlorophenyl)-b  : b  : b -trichlorethane is obtained by the method of (1) using 677 parts of oleum added over a period of 2 hours; (3) a product containing 86.3 per cent of a  : a -di-(p-chlorophenyl)-b  : b  : b -trichloroethane is obtained by the method of (1) using 677 parts of 25 per cent oleum added over a period of 4 hours at 10 DEG  C.; (4) a product containing 92 per cent of a  : a -di-(p-chlorophenyl)-b  : b  : b -trichloroethane is obtained by the method of (3) using 253 parts of chlorobenzene, the oleum being added over a period of 4 hours; (5) a product containing 84.5 per cent of a  : a -di-(p-chlorophenyl)-b  : b  : b -trichloroethane is obtained by the method of (3) over a period of 12 hours at 0 DEG  C. Specifications 547,871 and 547,874 are referred to.
Patent GB-517565-A (GB)
Title: Improvements relating to bearings for pulleys and like rotatable bodies
IPC: F16H7/20
Filed: 1938-06-28
Abstract: 517,565. Bearings. ELLISON INSULATIONS, Ltd., and DANIEL, S. L. June 28, 1938, No. 19105. [Class 12 (i)] A pulley, gear wheel or the like formed of synthetic resinoid or like mouldable substance, or from a fabric impregnated with such substance, has a ball bearing c mounted in an aperture b therein, one or more retaining plates f of thin sheet metal secured to the pulley by rivets or other means holding the bearing in position. The rings f may have lightening apertures i. Reference has been directed by the Comptroller to Specifications 144,940, [Class 12 (i)], 495,858, and U.S.A. Specification 1,980,123.
Patent GB-147100-A (GB)
Title: Improvements relating to starting devices for internal combustion engines
IPC: H02K23/36
Filed: 1920-07-07
Abstract: 147,100. Bosch Akt.-Ges., R. June 4, 1919, [Convention date]. Exciting; motors, gearing for.-In an electric starter in which the motor armature and the starting-pinion are displaced axially by a highresistance field winding d, Fig. 1, and set in slow rotation, the main field winding c being afterwards connected in parallel with the winding d, the two windings are completely separate from each other and are arranged on oppositely-disposed pairs of poles f, f<1> and e, e<1>. The circuit of the high-resistance winding is closed by a hand-switch g, and that of the main winding by an electro-magnetic switch h. In a modification, Fig. 2, the high-resistance winding is divided into two sections d', d<3> and d<2>, d', the section d', d<3> being in series with the armature and the section d<2> d4 in parallel. The section d<2>, d<4> is insufficient without the other section to move the armature axially into the magnetic field.
Patent GB-380188-A (GB)
Title: Improvements in sheet feed and delivery mechanism for printing machines
IPC: B41L47/24
Filed: 1931-07-02
Abstract: 380,188. Printing-machines. ADDRESSOGRAPH CO., 901, West Van Buren Street, Chicago, U.S.A. July 2, 1931, No. 19146. Convention date, Dec. 22, 1930. [Classes 100 (i) and 100 (ii).] Sheet-separators; stopping - arrangements.- In a printing-machine in which is employed an intermittently operated impression mechanism, e.g. an oscillating platen P carried by an arm 11, the sheets are fed by mechanism the driving-means for which is independent of the impression mechanism but is controlled by the operation of the impression mechanism. As applied to a machine in which the printing- plates are fed in succession from a magazine M as described in Specification 380,187 the sheets, envelopes, &c. are fed in succession from a pile W supported by an inclined shelf 54 fitted with laterally adjustable dished side-walls 62 by means of an intermittently rotated roller 28 fitted with a rubber blanket 32, Fig. 8, with enlarged ends 33, 34 which are received in openings 30, 31 in the roller 28. The roller 28 is freely mounted on a constantly driven shaft 18, and is connected to the shaft by a onerevolution clutch which is thrown into operation by an adjustable screw 52 carried by the platen P. The sheet feed is thus controlled by the movement of the platen. The screw 52 acts on a projection 50, Fig. 5, on a spring- controlled latch 45, which normally holds a spring-controlled pawl 40 pivoted to the roller 28 from engagement with a ratchet 38 on a constantly driven shaft 18. When the latch 45 is released the roller 28 is rotated for one revolution, and is then held from rotation, if the platen P has returned from operative position, by the action of the catch 45 on the pawl 40. A notch 53 in the latch prevents premature engagement of the latch 45 with the pawl. The roller 28 coacts with an adjustable flexible separator 64 which acts to retain all but the foremost sheet which is forwarded after separation by a roller 67 coacting with the roller 28, and also by rollers 681. If a sheet is not fed the machine is automatically stopped by means of electrically-operated meanscontrolled by contacts 95, 96 which are closed if a spring-pressed lever 90, Fig. 6, is permitted to move into a recess in a ring 43 which is clamped adjustably to the roller 28. Normally the recess is closed by the fed sheet. Sheet-registering devices.-The sheets are registered by an inclined edge 75, Fig. 1, on a bar 74 carried by pivoted bars 72, 73 which are adjustable in position to vary the position of the edge 75. Rollers 68<1> advance the sheets over a ledge at the end of a dished portion 68 of a table top 12 and the inclined edge 75 prevents rebound of the sheets. The feed rollers operate at a higher rate of speed than the impression mechanism. Delivery apparatus.-The printed sheets are delivered into a receptacle C by means of rising-and-falling rollers 80 carried by oscillating levers operated by a cam secured to the roller 28. The rollers 80 move the sheets in a direction perpendicular to the direction of feed.
Patent GB-1081965-A (GB)
Title: Continuous fine dispersion of pigments in fiber forming polymers
Inventor: DORFNER KONRAD
IPC: C08G63/78
Filed: 1966-05-02
Abstract: Water-insoluble pigments are continuously finely dispersed in fibre-forming polymers by grinding the pigment in a sand mill or bead mill, passing the dye suspension leaving the mill into a mixing unit in which it is mixed with the molten intermediates for the polymer, then passing the mixture into a reactor at 250-300 DEG  C. for polymerization or polycondensation. Suitable pigments are TiO2, Fe2O3, MgO, CaCO3, BaSO4 and the phthalocyanines.  These are preferably suspended in water, or when for use with polyethylene terephthalate, in glycol. The suspension may contain 7-25 wt. per cent of pigment.  Materials to be pigmented may be polyamides and polyesters deriving from e.g. caprolactam, laurolactam, capryllactam or from dimethyl terephthalate and ethylene glycol, or the monomeric transesterification product thereof.  The mill may be heated up to 250 DEG  C.  Suitable apparatus comprises a sand or bead mill with an inlet at the bottom, and an outlet at the top leading to a closed, heatable, cylindrical mixing unit, from which an outlet leads to a polymerization vessel.  In examples TiO2 is suspended in water containing sodium metaphosphate or in ethylene glycol containing alumina sol and mixed with caprolactam or an ethylene glycol/dimethyl terephthalate mixture respectively.
Patent GB-204308-A (GB)
Title: Improved process and apparatus for artificially reconstituting day-light
IPC: F21V9/02
Filed: 1923-07-26
Abstract: 204,308. Gamain, C. H. A. Sept. 20, 1922, [Convention date]. Ceiling and like overhead lamps.-In a method of artificially reconstituting daylight, an electric lamp 1 is run at a voltage higher than its natural one, so as to cause it to emit a greater quantity of blue rays, the glass bulb being coloured blue, so as to intercept the orange-yellow rays. The light from the lamp falls on to a reflector made up of colourless sectors 2, bluish sectors 3, and violet sectors 4, arranged in one or more concentric rows, each sector being made of silvered glass and coated to withstand the heat from the bulb. The still predominating violet rays are then removed from the reflected light by passage through a violet-coloured thin glass screen 5, lined if necessary with a plate 6 of plumbaginous glass to stop the greater portion of the ultra-violet rays. The whole arrangement is mounted in a frame provided with openings to ensure an energetic circulation of air between the bulb and the reflecting sectors.
Patent GB-453010-A (GB)
Title: Method of and apparatus for compacting powdered material centrifugally and feeding to apparatus
IPC: B30B15/30
Filed: 1935-07-08
Abstract: 453,010. Hoppers. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT EXPLOITATIE VAN TEN BOSCH OCTROOIEN N.V., 25, Izaac Evertslaan, Arnhem, Holland. July 8, 1935, Nos. 19412 and 19413. Convention dates, July 10, 1934 and April 1, 1935. [Class 78 (i)] [See also Group II] In filling limitec spaces such as com pression mould. with controllable quantities of granular or powdered material, the materia is first compacted by forcible rotation by means of blades in a closed, fixed container at a speed corresponding to the desired degree of density and then commmication is opened between the circumference of the container and the mould to charge the latter with a predetermined weight of the compressed material without stoppage of the apparatus. In the form shown the material is delivered from a hopper 5 to a centrifugal apparatus 1 in which it is first packed by the rotating blades 3 against the periphery of the casing and subsequently delivered by the blades when a tangential delivery-orifice 2 is opened. The density of packing is determined by the speed of rotation of the blades. In a modification the casing carrying the rotating blades is horizontal instead of vertical. In a further modification, an overflow pipe 8, Fig. 5, is fitted to accommodate excess material fed from the hopper over and above the quantity that can be compacted at any given time. The overflow material collecting in and overflowing from the vessel 7 forms a partial air-seal for the pipe and checks the rate of flow therein.
Patent GB-223000-A (GB)
Title: Improvements in strainers for beer engines and the like
IPC: B08B9/02
Filed: 1924-04-22
Abstract: 223,000. Rogers, W. T. April 22, 1924. Strainers. - A strainer d for a beer pump is arranged in a portion of the suction pipe formed by two members a, b held together by a union coupling c. A leather washer e is arranged between the members a, b.
Patent GB-670527-A (GB)
Title: Internal combustion turbines
IPC: F23R3/26
Filed: 1949-07-23
Abstract: 670,527. Gas turbines; centrifugal compressors. AUSTIN MOTOR CO., Ltd., RENNIE, B. C., and WEAVING, J. H. July 26, 1950. [July 23, 1949] No. 19426/49. Classes 110(i) and 110(iii). An I.C. gas turbine plant comprises means for varying the number of turbine nozzles in use and the characteristics of the compressor to suit so that the mass flow through the turbine can be controlled without altering the operating temperatures and pressures. Each combustion chamber 2 is formed with an inlet 7 and a flared outlet 9 which feeds a number of turbine nozzles 4 or section of a nozzle ring. A valve 8 is positioned either in the inlet 7 or in the outlet 9 which may be bifurcated to feed diametrically opposed nozzles. Again the plant may comprise a single combustion chamber having three outlets which are individually controlled. The compressor may be of the positive displacement type which is controlled by varying its speed or of the centrifugal type shown in Fig. 10. The centrifugal compressor comprises an axially adjustable shroud disc 10 which has radial slots to interdigitate with the impeller blades 12. The disc 10 is mounted on a movable hollow boss 13 which envelopes a fixed spindle 15. The disc 10 is urged towards the disc of the impeller by a spring 17 and is adjusted thereagainst by Huid pressure.
Patent GB-1375267-A (GB)
IPC: H02P27/06
Filed: 1972-04-27
Abstract: 1375267 Protecting inverters EMERSON ELECTRIC CO 27 April 1972 [18 June 1971] 19635/72 Heading H2F An inverter (not shown) feeding output lines 14a, 14b having at least one series resonant filter 16a, 17a in its path to the load is protected by a transformer 45 across one of the filter components 16a or 17a and, in the event of overload, a static switch 43 is fired which reduces the impedance across transformer 45. As described, a signal is fed on line 23 in the event of fuse failure, over current or other fault which triggers thyristor 97 so as to turn on thyristors 76 ... 78 of the static switch 43 so as to connect a common resistor 85 (0À055 ohm, 200 W) across the secondaries of transformer 45 and thus damp the voltage in the resonant filter. A relay 107 having a time delay dash-pot may be included to open circuit the load such as a threephase motor. In the event of a partial overload, insufficient to operate the fuse, diodes 73 ... 75 become conductive, damping the resonant filter by feeding current back to D.C. supply 12a, 12b. In Fig. 5 (not shown) three inverters having individual resonant filters and individual protective circuits are connected in parallel to the load.