baber/WOPTO huggingface dataset:
Patent GB-1404575-A (GB)
Title: Method of dispersing a pigment in a resin
IPC: B29B7/88
Filed: 1971-07-27
Abstract: 1404575 Mixing KODAK LTD 10 Oct 1972 [27 July 1971] 35195/71 Heading B1C [Also in Division G2] A method of making an optically transparent dispersion of a pigment having an average particle size less than 0.25 micron in a liquid resin comprises subjecting the pigment and the resin to ultrasonic vibrations until the pigment is dispersed therein. The pigment may be in the form of a paste with an involatile organic liquid and the resin may be an unpolymerised liquid thermosetting resin, a thermoplastic resin which is kept molten during the dispersion process, or a liquid precursor of the resin i.e. an unpolymerised or partly polymerised monomer or monomer mixture. A polymerisation catalyst may be included with the liquid resin. The dispersion may 'be cast between optically flat glass plates and then heated to polymerise the resin to provide e.g. an optical filter; other optical elements may be formed by machining and polishing or by casting in an appropriate mould. Reference is made to camera filters and lenses for goggles. In an example diethylene glycol bis allyl carbonate is used as a suitable thermosetting resin, together with di-isopropyl peroxy dicarbonate as catalyst and a dispersed carbon paste; ultrasonic vibration was applied for several minutes to obtain a dispersion which was filtered and then cast and heated to obtain a filter of optical density 1.6.
Patent GB-1504478-A (GB)
Title: Piston rings for internal combustion engines
IPC: F02F5/00
Filed: 1976-08-24
Abstract: 1504478 Monitoring piston ring movement SULZER BROS Ltd 24 Aug 1976 [26 Aug 1975] 35211/76 Heading G1N [Also in Division F2] Rotational movement of a cast iron piston ring 2, Fig. 1 (not shown) with respect to its groove in a reciprocating piston 10 is indicated by the effect of a groove 4, 5, in the ring filled with a non- magnetizable material, e.g. bronze, or an electromagnetic detector 12 situated outside the piston cylinder 11 and connected to an oscillograph 14.
Patent GB-1399255-A (GB)
Title: Halo and pseudohalo derivatives of vanadyl organophosphates or  organophosphites
IPC: C07F9/02
Filed: 1972-07-27
Abstract: 1399255 Organophosphorus vanadium compounds DART INDUSTRIES Inc 27 July 1972 [4 Aug 1971] 35239/72 Addition to 1,319,535 Heading C2P [Also in Division C3] The invention comprises vanadium compounds having the formulae and wherein R 1  is H, an alkyl, aryl or cycloalkyl group having up to 16 carbon atoms, R 2  is a haloalkyl, pseudohaloalkyl, halocycloalkyl, pseudohalocycloalkyl, haloaryl or pseudohaloaryl group of up to 16 carbon atoms, said halo is Cl, F, Br, or I, said pseudohalo is CN, cyanato or OH, w is 0 or 1, x is 0 or 1, y is 1 or 2, x + y is 2 and n is 2 to 6. They may be obtained by reacting a vanadyl salt wherein the vanadium is tetravalent with a phosphate or phosphite of the formula M[OP(O) w (OR 1 ) x (OR 2 ) y ] 2  wherein M is Be, Mg, Ca, Zn, Sr, Cd or Ba and R 1 , R 2  w, x and y are as defined above, suitably in an aqueous medium at 0‹ to 200‹ C. Specified vanadyl salts are the sulphate, chloride, bromide, iodide, oxalate and acetate. The products can be combined with an organoaluminium halide to form co-ordination compounds in which the A1 : V ratio is suitably 1 : 1 to 20 : 1, such compounds being useful as catalysts in the polymerization of α-olefins. Magnesium bis-(di-2-chloroethyl phosphate is prepared by heating MgCl 2 6H 2 O with tris-(2- chloroethyl phosphate) to 167‹ C.
Patent GB-1324515-A (GB)
Title: Process for the removal of metallic silver from photographic material
IPC: G03C7/42
Filed: 1970-07-21
Abstract: 1324515 Photographic silver bleach baths CIBA-GEIGY A G 21 July 1970 [30 July 1969] 35303/70 Heading G2C Photographic silver bleach baths which will remove silver but not silver salts from developed silver salt materials comprise an acid bath free from anions that form sparingly soluble silver salts i.e. having a solubility product of less than 10<SP>-8À5</SP>(mole/litre)<SP>2</SP> at 25C (e.g. halide and ferricyanide ions), which bath contains (i) an oxidant having a standard redox potential of from +0À15 up to but excluding +0À8 volt, (e.g. cupric or ferric salts or a quinone), and (ii) a silver ion complexing agent having a silver complex stability constant of from 10<SP>1</SP> to 10<SP>9</SP>(litre/mole)<SP>2</SP>, (e.g. alkyl alcohol, a nitrile such as acetonitrile, pyrazine, thiophene or a water-soluble thioether such as thiodiglycol, thiodipropionic acid and 2-hydroxyethyl-methyl sulphide), said bath not containing an oxidant or a complexing agent having properties lying outside the above ranges. The baths are suitable for bleaching of silver during reversal processing, especially the reversal processing of silver-dye-bleach materials.
Patent GB-797351-A (GB)
Title: Means for feeding bar stock in automatic lathes and like machine tools
Inventor: KENDALL FREDERICK WILLIAM
IPC: B23B13/00
Filed: 1954-12-07
Abstract: 797,351. Lathe-details. BROWN &. WARD (TOOLS), Ltd. Feb. 27, 1956 [Dec. 7, 1954], No. 35326/54. Class 83 (3). Bar-feed 'means for automatic-lathes &c. comprising an endless-chain driven by an electric motor and slipping-clutch, is characterized in that the endless-chain engages sprocket wheels on vertical axes, and that a pin on a link of the chain engages a slot in a pusher-member along which it travels as the pin passes from one run of the chain to the other run. The framework of the feed-device is supported at the machine end by a bracket 26, Fig. 1, secured to the lathe &c. headstock 28a. Adjustable pillars 27 carry the remainder of the framework,' the end-pillar also supporting an electric-motor 5 and gear-box 5a which drive, through an adjustable slip-clutch 6a, 7a, a sprocket 4 for an endless-chain 3. The other end of the device is provided with a second sprocket 8 with hand-adjustment 8a, which supports the chain. A pin 11, Figs. 2 and 3, upstanding from one of the chain-links, engages a cross-slot 10 in a stock-pusher member 9 which is thus reciprocated from one end of the device to the other, while the chain is continuously moved by the driving sprocket. The pusher 9 has a dependent leg 25 which keeps it level, the leg sliding along a plate 24 extending over the length of the device. The stock-bars are supported on the machine-axis by a feedguide 12. A cover 13 with an inclined lug 14 is moved on an inclined support 15 to open a gap at one side of the feed-guide, permitting a fresh stock-bar 2 to be moved from a support 18 into the feed-guide. The cover is moved by a handle 19, Fig. 2, at the machine-end of the device. The drive-clutch slips when the stock reaches a stock-stop, and when a stock-bar is used up the pusher 9 returns to the end away from the machine, when a switch 22 is operated to stop the drive-motor and switch on a light, warning the operator that a fresh stock-bar is required. The pusher is automatically given a quick-return movement by a second electricmotor and the " feed " motor is automatically re-started when the collet of the lathe is closed.
Patent GB-928892-A (GB)
Title: Device for traversing a tool or the like
Inventor: GREEN HAROLD HURDLEY
IPC: B26D1/18
Filed: 1958-11-04
Abstract: 928,892. Cutting-machines. DUNLOP RUBBER CO. Ltd. Oct. 20, 1959 [Nov. 4, 1958], No. 35335/58. Class 31 (1). A device for traversing a cutter blade comprises an endless flexible drive member passing round a pair of wheels with the runs of the drive member extending in a direction parallel to the desired direction of the stroke of the cutter blade, a carriage provided with slidable mounting means for mounting a cutter blade and means for slidably moving the slidable mounting means, and a link connected to the drive member and to the carriage for traversing the carriage and also for actuating the means for slidably moving the slidable mounting means to move the cutter blade into and out of an operative position. A cutter unit b is mounted on a framework 1 by means of grooved wheels 2 which engage guide rails 3. An endless chain 6 passes round sprocket-wheels 4, 5, the wheel 5 being driven by an electric motor 9. The cutter unit comprises a carriage 10 on which the wheels 2 are mounted, carrying an electric motor 11, the shaft of which is splined at 12 to slidably engage a complementary splined hub 13 carrying a cutter blade 14. A link 15 is connected by a pivot pin 16 to the chain 6 and by a pivot pin 17 to the carriage 10. The link 15 is pivotally connected intermediate its ends by links 19, 20 to a pin 21 pivotally mounted in an extension lug 22 of the carriage 10. Secured to the other end of the pivot pin 21 is a forked shift lever 23, the ends of which straddle a part of the hub 13 and have pins 24 engaging a circumferential groove 25 in the hub. By means of the links 19, 20, the swinging movement of the link 15 about its pivot 17 at the ends of its traverse causes the pivot pin 21 to rotate, thereby similarly swinging the shift lever 23 and moving the hub 13 axially on the shaft. Thus, at the left-hand end of the Figures, the link 15 will be caused to swing in a clockwise direction and the hub and blade will be raised while at the right-hand end of the Figures, the link will be caused to swing in an anticlockwise direction and the hub and blade will be lowered.
Patent GB-1015531-A (GB)
Title: Improvements relating to electric power transmission systems
Inventor: WILCOX THOMAS WEBSTER
IPC: H01H75/04
Filed: 1960-10-17
Abstract: 1,015,531. Transmission and earthing systems. MERZ & McLELLAN SERVICES Ltd. Jan. 16, 1962 [Oct. 17,1960], No. 35580/60. Heading H2H. An electric power transmission system which includes a feeder teed on to a line has automatically reclosing circuit breakers in the line on each side of the T-junction and an isolating switch in the feeder, the operation of the switching means being initiated by the manual operation of a switch which firstly causes disablement of the normal opening and reclosure of the auto-circuit breakers by the normal line protection means, secondly opening of the autocircuit breakers on both sides of the T-junction, thirdly opening of the isolating switch and lastly reclosing of the auto-circuit breakers. After each operational step a signal may be transmitted back to the control point to permit the next operational step to be effected. In a three-phase system one phase at a time or all three phases simultaneously may be operated upon. In a transmission system wherein part is a direct current link including the T-junction the auto-reclosing circuit breakers may be in the form of grid controlled rectifiers or inverters. Furthermore the feeder may include shunt reactors or capacitors in which case further operational steps are included to earth the line prior to the opening of the isolating switch and removing the earth after such opening.
Patent GB-938008-A (GB)
Title: Improvements in or relating to telephone ringing generators
Inventor: BARNETT DERRICK
IPC: H04M19/04
Filed: 1959-10-21
Abstract: 938,008. Transistor oscillator circuits. ERICSSON TELEPHONES Ltd. Jan. 19, 1961 [Oct. 21, 1959], No. 35617/59. Class 40 (6). A telephone ringing current generator comprises a push-pull transistor oscillator having a saturable core feed-back transformer formed from a single continuous tapped winding. The ringing generator shown comprises a pair of transistors with a saturable core auto-transformer coupling the emitter and the base circuits. Capacitors 129 and 130 are connected between collector and base electrodes to prevent voltage spikes being developed and an output terminal 145 is connected through a capacitor 136 which tunes the load circuit, the connection being to the end of the auto-transformer winding or to one of the tappings thereon. Specification 938,007 is referred to.
Patent GB-1042874-A (GB)
Title: Improvements in or relating to endoscopes or the like
IPC: A61B1/07
Filed: 1961-10-03
Abstract: 1,042,874. Optical apparatus. G. B. STANFORD. Jan. 3, 1963 [Oct. 3, 1961], No. 35630/61. Heading G2J. [Also in Division A5] A device for viewing the interior of cavities comprises a unit including a light guide 7 and a light source 11 which is removably attached to an outer sleeve 1, which is located in the cavity under examination, so that the light guide extends within the sleeve and the light source is located outside the cavity. The outer sleeve 1 is detachably secured to a base plate 4 by a nut 5, the base plate being attached to a lamp housing 11 by pins 12. The viewing system contained in a tube 14 and having an eyepiece 14a and a quartz rod light guide are enclosed in a tube 6 having a crosssection comprising contiguous circles. The tube 6 is inserted in the outer sleeve 1, the viewing system tube 14 having a lug 15 which is secured to the lamp housing by a pin 12 and the light guide having a lug 8 with a pin 9 which is located in a recess 10 in the base to correctly orientate the light guide. The viewing system, light guide and lamp housing may be detached as a unit from the outer sleeve by unscrewing the nut 5.
Patent GB-1270225-A (GB)
Title: A threshing machine and feed platform arrangement therefor
IPC: A01F12/44
Filed: 1970-07-23
Abstract: 1,270,225. Threshing machines. DEERE & CO. 23 July, 1970 [25 July, 1969], No. 35722/ 70. Heading A1F. The stepped feed-platform 22, 24 of a threshing machine is mounted in a frame 26 connected to rocking levers 28, and leads to a winnowing mechanism, at least part of the feed-platform being removable for cleaning or replacement through the flap 46 towards the front of the machine. The feed-platform 22, 24 can either by constructed in one piece or subdivided into several sections 30, so disposed that they can be fixed individually on the supporting frame 26. The sections 30 are of U-shape cross-section, and are held in place by the flap 46 or similar device at the forward end of the frame 26. In operation, the conveyor 18 is pivoted upwards about 16, the flap 46 is opened, and the sections 30 can then be taken out individually for cleaning or replacing. The sections 30 can be made of metal, wood or plastics.
Patent GB-1001252-A (GB)
Title: Improvements relating to ambulances or like vehicles
Inventor: BURTON JOHN DENIS
IPC: A61G3/00
Filed: 1961-10-05
Abstract: 1,001,252. Ambulances. LONDON COUNTY COUNCIL. Oct. 5, 1962 [Oct. 5, 1961], No. 35947/61. Heading B7B. A stretcher supporting frame 17, 18 is suspended by universal resilient joint links 21 from the side wall so that the frame may be moved inwardly towards the aisle to accommodate stretches, the legs 19 being then inserted in the other sockets 20.
Patent GB-163974-A (GB)
Title: An electric apparatus for heating flowing liquids
IPC: F24H1/10
Filed: 1920-12-22
Abstract: 163,974. Masseroni, R. C., (Assignee of Donini, G.). May 24, 1920, [Convention date] Heating by electricity. - A liquid heater comprises an insulating tube 1 closed by caps 2, 3 clamped on to the tube by bolts 4. A liquid inlet 7 is fitted in the lower cap and an outlet tube 6 which may be slid up or down in the heater to adjust the level of the liquid passes through the same cap. The leads are connected to bridge pieces 10, 11 connecting pairs of electrodes 8, 8<1>, 9, 9' the current passing through the liquid between the pairs. The electrodes may be parallel to the axis of the tube 1 or slightly inclined thereto. Openings 8", 9" may be formed in the upper ends of the electrodes to facilitate the circulation of the liquid. The number of electrode pairs may be varied; for example three pairs, each coupled to one of the leads of a threephase supply, may be fitted.
Patent GB-1521255-A (GB)
Title: Method and apparatus for screening liquids
IPC: B01D33/00
Filed: 1974-08-15
Abstract: 1521255 Rotatable screen HAWKER SIDDELEY BRACKETT Ltd 14 Aug 1975 [15 Aug 1974] 36006/74 Heading B1D A rotatable, outward-flow drum screen has a wall thickness greater or equal to the diameter of the screening perforations therein (e.g. 6 mm) and is rotated at 60-100 feet/ minute peripheral speed, thereby preventing 'hairpinning' by fibres in slurry being screened. The drum comprises a cylindrical frame with screen plates mounted thereon and is open at one end for inlet of slurry. Backwashing means above the slurry level wash retained solids into a hopper. Screen plates are made of ABS or PVC plastics and perforations are drilled therein to ensure smooth bores.
Patent GB-1006951-A (GB)
Title: Improvements in or relating to tunnel diode circuit arrangements
IPC: H03K3/315
Filed: 1962-09-21
Abstract: 1,006,951. Tunnel diode bi-stabie circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 21, 1962 [Sept. 26, 1961], No. 36009/62. Heading H3T. A frequency dividing bi-stable circuit comprises a tunnel diode 1 biased to operate in a bi-stable manner and shunted by an inductor 6 in series with a diode 5 poled in the same sense as the tunnel diode and arranged to have a high impedance when the tunnel diode is in its low voltage state. A first positive input pulse at terminal 4 switches the tunnel diode to its high voltage state. The next positive pulse is then sufficient to render diode 5 conductive so that current builds up in the inductance. At the end of the pulse the back e.m.f. in the inductor switches the circuit back to the low voltage state. The output is derived from a resistor 3 which alternatively may be connected in the input circuit. The diode 5 may be the emitter base path of a transistor and output pulses may be taken from the collector.
Patent GB-979803-A (GB)
Title: Improvements relating to the machining of internally grooved pipes and tubes
Inventor: JONES SIDNEY HERBERT
IPC: B23B27/06
Filed: 1961-10-06
Abstract: 979,803. Cutting tools. KAY & CO. (ENGINEERS) Ltd. Oct. 5, 1962 [Oct. 6, 1961], No. 36021/61. Headings B3B and B3C. A tool for finishing the bore and'grooves in a pipe, comprises a projection 12 for finishing the bore, and projections 13 for finishing the grooves. Projections 13 project radially beyond projection 12, and the work is rotated during the finishing operation. Specification 904,667 is referred to.
Patent GB-756915-A (GB)
Title: Improvements in or relating to devices for cooling sinter and like material of cake,agglomerate or granular form
IPC: F27D15/02
Filed: 1954-12-13
Abstract: 756,915. Cooling hot loose material. KAISER STEEL CORPORATION. Dec. 13, 1954 [May 14, 1954], No. 36046/54. Class 51(2). A cooler for hot material of coke, agglomerate or granular form, e.g. sinter, coke, cement clinker and burnt lime, comprises a rotary, frusto-conical framework 1 encased by an abrasion-resisting surface 28, and carrying superposed annular bins 31, 32 respectively disposed over and spaced from platforms 41, 43, a hopper 50 feeding sinter &c. continuously into the upper bin 31, an adjustable plough 51 diverting the sinter &c. from the platform 41 into the bin 32, and an adjustable plough 56 directing the sinter &c. from the platform 43 onto a discharge conveyer 55. The framework 1 comprises radially disposed truss members 2 extending between lower beams 3 and upper beams 4 secured to a shaft 7 pivoted on a base member 10. The lower beams 3 carry a circular track 12 engaging wheels 13 spring-mounted on standards 14, one of said wheels being driven by a motor 22 through a gear box 27 and a flexible coupling 26. The outer bin walls 33, 34 are respectively carried by radial arms 36, 40 provided with inverted channel-shaped coverings 37, 44, and the angle of inclination of all the bin walls is greater than the angle of repose of the sinter &c. The outer extremity of the table 41 is in vertical alignment with the centre of the bin 32.
Patent GB-761256-A (GB)
Title: An adjustable plug gauge
Inventor: STAPLES GORDON FRANCIS
IPC: G01B5/08
Filed: 1953-12-31
Abstract: 761,256. Plug gauges. BOWERS, G., and BOWERS, E., [trading as BOWERS & CO., T.]. Jan. 21, 1955 [Dec. 31, 1953], No. 36261/53. Class 106 (2). An adjustable plug gauge has a radiused head having two anvils 110, 111 abutting each other along inclined faces and adapted to move relatively to one another so as to enlarge or reduce the effective diameter of the gauge, means for adjusting the anvils to various positions so that the diameters of holes can be ascertained or the gauge pre-set before use, and locking means to lock the anvils 110, 111 against displacement. The abutting faces of the anvils slide over each other on an inclined plane 112, the anvil 111 being recessed at 113 to receive a tongue 114 on the anvil 110. The outer surfaces of the anvils are arcuate at 115 and 116. A hollow stem 117 which accommodates a draw bolt 118 is integral with the anvil 111 and has a threaded portion 119 with a locknut 120 at one end and a projection 121 at the other engaging in recesses 122, 123 in the anvils. The stem 117 is externally threaded at 124, adjacent the anvils, to carry a sizeadjusting nut 125. Two such gauges may be held, one in each end of a sleeve, secured by retaining screws. The setting is effected by releasing the locknut 120 and adjusting the nut 125 while sliding the anvils relatively to each other. The nut 125 holds the anvil 110 from any further movement up the inclined plane and by tightening the locknut 120 it is prevented from sliding down.
Patent GB-1191608-A (GB)
Title: A Forging Manipulator Co-operating with a Forging Press.
IPC: B21J13/10
Filed: 1968-07-30
Abstract: 1,191,608. Forging manipulator. SCHLOEMANN A.G. 30 July, 1968 [25 Aug., 1967], No. 36292/68. Addition to 1,187,172. Heading B3H. A forging manipulator as described in Specification 1,187,172 has a high-pressure source 29 in addition to the normal control pressure from the pumps 1, 4 connected through a three-way valve 37 to the piston-cylinder assembly 10, 20 to move the peel assembly at high speed after the forging stroke. The valve 37 is hydraulically controlled from a pressure source 33 which is divided through valves 40, 40a, 31, 44 to each side of the valve 37. During forging the peel assembly is moved at the same speed but in the opposite direction to the carriage by the control described in Specification 1,187,172. If the carriage is moving to the left the valve 31 is electrically operated to by-pass the valve 40a. The relative movement of the peel and the carriage causes the roller 54 to run on the cam 39 to connect the source 33 to a reservoir 46. The pressure drop to the piston 42 of the valve 37 causes the valve to move to position 47. The valve 48 is moved to position 49 after the forging stroke to connect the high-pressure source 29 to the cylinder space 23 to move the peel in the same direction of the carriage at high speed. When the carriage is moving to the right the valve 40a is connected to the reservoir.
Patent GB-1119107-A (GB)
Title: Improvements in or relating to expandable styrene polymers
IPC: C08J9/18
Filed: 1966-08-12
Abstract: A compolymer composition which expands on heating to a low density shrink resistant cellular foam comprises a vinyl aryl monomer copolymerized with from about 0.7 to 0.025% by weight of vinyl aryl monomer of tung oil, said composition containing from 3-20% by weight of copolymer of a blowing agent. Suitable vinyl aryl monomers are styrene, isopropylstyrene, alpha-methylstyrene, nuclear dimethylstyrenes, chlorostyrenes and vinyl naphthalene. Preferred blowing agents are volatile hydrocarbons containing from 1-7 carbon atoms.  The tung oil can be introduced either by mixing it with the vinyl aryl monomer prior to polymerization, or by adding it after a portion of the vinyl aryl monomer has polymerized. Self-extinguishing agents and plasticizers may also be present.