baber/WOPTO huggingface dataset:
Patent GB-968705-A (GB)
Title: Improvements relating to the production of halogenated styrene polymers
Inventor: BOOT JOB JOHANNES
IPC: C08F8/20
Filed: 1961-05-31
Abstract: A styrene polymer obtained by emulsion polymerization is subjected to the action of a halogen, e.g. chlorine or bromine, while it is in the form of a dispersion in an aqueous medium. The polymers may be derived from a -methylstyrene or alkyl styrenes in which the alkyl groups are in the nucleus, or may be copolymers of styrene and butadiene, acrylonitrile or an alkyl acrylate or methacrylate.  The polymerization may be carried out with a non-ionic emulsifier and 20-100% of an ionic or 20-60% of a cationic emulsifier.  A non-ionic emulsifier, e.g. 150-500%, may be added before or in the early stages of halogenation in an amount at least equal to that of the ionic emulsifier initially present in the dispersion.  The dispersion may contain a protective colloid, e.g. 100-400% polyvinyl alcohol or sodium polymethacrylate, and a blowing agent e.g. a liquid alkane or cycloalkane.  Halogenation may be effected at below 15 DEG C. in the absence of actinic, e.g. day, light and in the presence of a catalyst, e.g. iron powder, iodine, alkali metal, e.g. K, iodides, hydrogen peroxide or potassium persulphate. The emulsifiers may be olefine oxide condensation products, e.g. with an alkylphenol, quaternary ammonium salts or alkyl sulphates or sulphonates.
Patent GB-1473284-A (GB)
Title: Turntable assembly for supporting a revolving chair
IPC: F16C17/10
Filed: 1975-05-12
Abstract: 1473284 Revolving chair K G NYSTROM 12 May 1975 [20 June 1974] 19818/75 Heading A4J [Also in Division F2]  A turn-table assembly for supporting a revolving chair comprises a lower rigid plate 10 and an upper rigid plate 11 rotatably supported on the lower plate, which are connected to each other by means of radial bearing 15 and axial bearing 16 extending radially outside radial bearing 15; the former 16, comprising two axially opposed rings 22 and 23 which are non-rotatably connected to plates 10 and 11 respectively, and an intermediate ring 25 placed between the outer rings 22 and 23 and the intermediate ring 25 is provided with axially projecting flanges 26 to maintain the ring in position between 22 and 23. The upper plate 11 is preferably provided with upstanding brackets 13 on which the chair may be mounted. The lower plate 10 may have mounting studs 12 on its lower side for mounting in non-rotatable position on a suitable base.
Patent GB-753013-A (GB)
Title: Semiconductor electric signal translating devices
IPC: H03F3/14
Filed: 1953-07-17
Abstract: 753,013. Semi-conductor devices. WESTERN ELECTRIC CO., Inc. July 17, 1953 [July 22, 1952], No. 19879/53. Class 37. [Also in Group XL (c)] An electric signal translating device comprises two semi-conductor regions forming a PN junction, a hole emitter on one side of the junction and an electron emitter on the other side of the junction which is reverse biased to form a collector junction for each emitter, and the potential of one of the regions being dependent upon the potential of its . associated emitter by being connected thereto through an impedance. The emitters may comprise point contacts or additional portions of opposite conductivity type. Fig. 3 shows a PNPN germanium, silicon or other semi-conductor body having emitter, base and collector connections E, B and C respectively, and a " control " connection A, to the various zones. The emitter is biased positively and the collector negatively, so that PN junctions J1 and J3 are biased in the forward direction, and the " collector " junction J2 is biased in the reverse direction. An input signal applied between electrodes E and B results in an amplified output signal appearing in load 21 between electrodes C and B. The potential of the control electrode A is controlled by means of a connection comprising an impedance 24 made to the collector electrode C. Impedance 24 may consist of a variable linear resistor, a non-linear resistor such as a varistor, or a PN junction diode, or a diode rectifier in series with a linear resistor. Variation of impedance 24 enables the current amplification factor α to be controlled in relation to the input emitter current. Values of α approaching 100 may be achieved, since the load current may exceed that flowing through the collector junction J2. The emitter zone may be provided by a point contact oh the base zone 12, which may be electroformed to provide a small P-type region in the N-type zone 12 under the point contact. In Fig. 6, the arrangement is connected as a two-terminal device by disregarding the external connection to the base shown in Fig. 3. The voltage-current characteristic consists initially of a high positive resistance, which at a certain voltage triggers through a negative resistance region to a low positive resistance; the device thus has both a low current and a high current stable position at low voltages and may be used as a crosspoint switch in telephone switching systems. Control of the characteristic may be effected by varying resistors 22 or 24. The arrangement shown in Fig. 3 may also be used as a modulator by applying the carrier frequency between terminals E and B, and the modulating frequency in series with resistance 24. Alternatively, resistance 24 may consist of an indirectly heated thermistor as described in Specification 541,922, [Group XI], and the modulating voltage is then applied to the heater element of the thermistor. Specifications 700,231, 706,858, [Group II], and 753,014 also are referred to.
Patent GB-186749-A (GB)
Title: Means for propelling vessels
IPC: B63H11/00
Filed: 1921-07-25
Abstract: 186,749. Portway, A. P. July 25, 1921. Propelling and steering by water jets.-Waterjet propulsion apparatus for vessels comprises one or more longitudinal pipes, each formed with an upper inlet section and a lower outlet section united by a downward bend, an internal-combustion chamber situated at the top of the bend, and a gate valve synchronously operated for controlling the water inlet. Each pipe comprises an upper inlet section 5, a lower outlet section 4, and a downward bend 3. A cylinder 7, with inlet valve 8, is placed at the top of the bend. A gate valve 6 controls the pipe 5 and is operated by a cam 13 synchronously with the cam 15 of the inlet valve. In a modified system a number of parallel pipes have their inlet sections coupled to a cross pipe fed by a separate forward pipe.
Patent GB-516703-A (GB)
Title: A new or improved material for destroying rodents and method of making the same
IPC: A01N25/00
Filed: 1938-07-05
Abstract: 516,703. Vermin-destroying compositions. FREYBERG, J., and FREYBERG, W. July 5, 1938. No. 19929. Convention date, Sept. 14, 1937. [Class 81 (i)] A preparation for destroying rodents comprises a bait consisting of dried and comminuted sugar beet impregnated with a poisonous solution or coated with a poison. Binding or adhesive materials may be used to ensure the adherence of the poison to the bait, e.g. molasses, meal or starch paste, glue, artificial resin, collodion, drying oils, Examples describe preparations including as toxic ingredients strychnine nitrate, zinc phosphide and red kaolin, extract of squills.
Patent GB-965100-A (GB)
Title: Improvements in and relating to colour-image producing cathode ray tubes
IPC: H04N9/24
Filed: 1961-06-02
Abstract: 965,100. Colour television tubes. PHILCO CORPORATION. June 2, 1961 [June 3, 1960], No. 19964/61. Heading H1D. In a colour television display tube in which evenly spaced indexing stripes 15a, Fig. 2, overlie certain of the colour stripes 11a, 12a, 13a, i.e. the red stripes 11a, the stripes 11a are so dimensioned, i.e. widened, that they alone, or in combination with further overlying inactive stripes 16, equalize the red light output in successive colour cycles d1, d2. As shown, the red stripes 11a abut the adjacent blue and green stripes 12a, 13a. The indexing stripes may be secondary electron emissive or light emissive in the non-visible range. A lightreflecting aluminium layer 14a is provided. Specification 931,083 is referred to.
Patent GB-993593-A (GB)
Title: Improvements relating to water-soluble quaternary ammonium salts of azo dyestuffs and their use
IPC: C09B44/14
Filed: 1962-05-24
Abstract: The invention comprises water-soluble quaternary ammonium salts of formula <FORM:0993593/C4-C5/1> wherein R is a carbocyclic-aromatic radical which can contain an azo group, R1 is a C1-C5 alkyl group or a phenyl group, R2 is hydrogen, a C1-C5 alkyl, cyanoalkyl, or cyclohexyl group or a phenyl group which may be substituted by C1-C3 alkyl or alkoxy groups or alkanoylamino groups, R3 is the radical of a primary C1-C5 aliphatic alcohol or a benzyl alcohol and X#Q is the anion derived from an alkylating agent or the anion introduced by the interaction of the primarily obtained dye salt with a metal salt or the anionic group of a double salt formed from the said anions and a metal salt, which anions and anionic groups are equivalent to the dye cation, sulphonic and carboxylic acid groups being excluded as substituents of the cation. The dyes are prepared by reacting an azo dye of formula <FORM:0993593/C4-C5/2> with a reactive ester of an alcohol R3-OH and possibly adding a metal salt to form the quaternary ammonium salt defined above.  The dyes are used to dye polymeric and copolymeric acrylonitrile fibres in yellow to orange shades. In examples dyes wherein R is a benzene or naphthalene (1 and 2) or azobenzene (3) radical are reacted with dimethyl sulphate or ethyl p-toluene sulphonate and in Examples 1 and 2 further treated with zinc chloride to form the double salt.
Patent GB-1191784-A (GB)
Title: Method and Apparatus for Removing Flash from Foundry Cores
Inventor: STEINBACHER JACK THOMAS
IPC: B22C9/18
Filed: 1968-04-26
Abstract: 1,191,784. Treating cores. EATON YALE & TOWNE Inc. 26 April, 1968 [8 June, 1967], No. 20007/68. Heading B3F. A template 14, oscillated by an attached vibrator (28), removes flash 12 from a moulded core 10 when the core is lowered manually through a close-fitting hole 24. A spring- mounted plate 31 facilitates control of the manipulation.
Patent GB-744269-A (GB)
Title: Improvements in or relating to apparatus for blending and mixing textiles and like fibres
IPC: D01G13/00
Filed: 1953-07-20
Abstract: 744,269. Mixing fibres. SPENCER & HALSTEAD, Ltd., and ODDIE, W. M. Aug. 31, 1954 [July 20, 1953], No. 20015/53. Class 120 (3).  Apparatus for blending textile fibres by spreading the fibres on a surface comprises a pneumatic conveyer system terminating in two rotating oppositely directed delivery nozzles 2 one or each of which is provided with an adjustable outlet 3 capable of varying independently the direction of delivery of the material issuing therefrom. The spreader may be supported by a bearing contained in a housing carried on a pillar mounted on the floor, or the housing may be suspended from a ceiling, Fig. 2 (not shown).
Patent GB-1362363-A (GB)
Title: Photodegradable polymers
IPC: C08F220/14
Filed: 1970-04-27
Abstract: 1362363 Photodegradable polymers GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO 27 April 1971 [27 April 1970 14 May 1970] 20101/70 and 23387/70 Heading C3P  Fabricated photodegradable articles comprise a photodegradable polymer of a vinylidene unsaturated monomer and containing in its polymeric backbone a ketonic structural unit of general formula wherein R<SP>1</SP> represents a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms and R represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkaryl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aryl group, having from 1 to 9 carbon atoms, the ketonic structural units being present in an amount such that the carbonyl group thereof comprises from 0À02 weight per cent to 2 weight per cent, based on the total polymer. Photodegradable polymers in which the ketone carbonyl content is from 0À02 to 1À2 weight per cent can be prepared by copolymerizing the vinylidene unsaturated monomer with an unsaturated copolymerizable ketone of general formula R<SP>1</SP>-C(=CH 2 )-COR. Copolymers of ethylene and certain ketones having a ketone carbonyl content of 0À02 to 2 weight per cent are claimed per se. In the examples methyl methacrylate, methyl vinyl ketone, styrene, phenyl vinyl ketone, methyl acrylate, ethylene, carbon monoxide, methyl isopropenyl ketone, ethyl vinyl ketone and vinyl acetate are copolymerized in the presence of lauroyl peroxide, toluene, ethyl acetate, benzoyl peroxide, ditert-butyl peroxide and benzene. The copolymers are dissolved in benzene or made into films or moulded test pieces and exposed to ultraviolet light from a mercury vapour arc to degrade the copolymer.
Patent GB-757091-A (GB)
Title: Improvements in or relating to thread-guiding means
IPC: D05B67/00
Filed: 1953-07-21
Abstract: 757,091. Sewing-machines. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). July 20, 1954 [July 21, 1953], No. 20151/53. Class 112. [Also in Group IX] A thread-guiding roll for use in waxed-thread sewing-machines to avoid the possibility of gumming up with surplus wax has its inner bearing surface formed by the ends of a set of spokes. In the form shown the roll 20, with a peripheral groove for the thread, has a number of holes drilled through it parallel to its axis and equidistant therefrom and a central bore, to fit on the cylindrical surface 30 of a fixed stud, intersects these holes so that they form recesses 37 opening into the central bore and separated by spokes 28 of which the ends bear on the surface 30. The spokes may have scraping edges to assist in removal of wax from the surface 30 and their middle parts are preferably cut away at 40; the recesses 37, 40 provide means for escape of any wax scraped off the bearing surface, and may also act as reservoirs for lubricant or wax-solvent. The head 42 of the stud does not completely cover the recesses 37, so that liquid can be introduced into the latter by an oil-can. The roll is surrounded by a fixed guard 36 with peripheral slots.
Patent GB-1367837-A (GB)
Title: Apparatus for underwater operations
IPC: E21B41/06
Filed: 1972-05-01
Abstract: 1367837 Diving chambers, subaqueous struc- SUBSEA EQUIPMENT ASSOCIATES Ltd 1 May 1972 [28 June 1971] 20208/72 Heading E1H An installation for underwater servicing of, e.g. a well head 81 comprises a base member 2 secured to and surrounding the well head and provided with a flat surface to receive a work bell 5 lowerable from, e.g. a ship by a pipe (6) Fig. 1 (not shown), the bell 5 having an external control chamber 13 separated from the bell by a watertight door and equipped with an external watertight door 16, and a transfer chamber 10 having a ballast tank 63, propulsion means 14 and a watertight door 61, 62 leading to a trunk 15 cooperable with the surface of the control chamber 13 around the door 16. In operation, the transfer chamber 10 descends to inspect the well head 81 and base member 2 and returns to the surface before the workbell 5 is lowered, the bell being filled with air via pipe (6) and valves 31, 79. When the bell 5 is guided into position on base member 2 the upper end of pipe 6 is opened to atmosphere before the pipe is withdrawn, automatically closing valve 31. The transfer chamber 10 is now lowered into position over door 16 and a pump 64 evacuates the water from trunk 15 via pipe 68. The workcrew descend into trunk 15 and connect up electrical and gas supply connectors 54, 56 before entering chamber 13. Here they check the atmosphere in bell 5 by means of telemeter SO, before entering the bell, one operator remaining in the chamber 13. If the atmosphere in bell 5 is, or becomes, unsatisfactory, the crew remain in chamber 13, door 17 is closed and the bell filled with water via pipe 38 and valves 74, 75, the gas being exhausted via pipe 76 and valve 77. The water is then pumped out via pipe 38 valves 74, 73 and pump 37, and the bell filled with nitrogen at atmospheric pressure from cylinders 43 via pipe 44 and valve 78. The workcrew can now re-enter bell 5 equipped with self-contained breathing apparatus. On completion of their work the crew return to the chamber 13 and fill the bell with water. The atmosphere in chamber 13 is rendered breathable by absorption of impurities and addition of oxygen. The crew then re-enter transfer chamber 10, and open valve 72 to flood the trunk 15 whereupon the chamber 10 may return to the ship. (For Figures see next page)
Patent GB-1208868-A (GB)
Title: Improvements in or relating to mechanical electrical signal converters
Inventor: ROSENBAUM HAROLD MATTHEW
IPC: F15C1/08
Filed: 1967-05-02
Abstract: 1,208,868. Non - contact - making relays. MARCONI CO. Ltd. 22 Feb., 1968 [2 May, 1967], No. 20326/67. Heading H3B. A non-contact-making relay responsive to changes in fluid pressure comprises a rectangular hysteresis loop magnetic core 5 having an input winding 6, supplied with A.C., and an output winding 7, and a magnetic member 4, the position of which in relation to the core is controlled by fluid pressure in chamber 2 by means of a diaphragm. Movement of magnet 4 varies the saturation of core 5 and hence the coupling between windings 6 and 7. The device may be used to provide an electrical output from a wall attachment effect or other fluidic or pneumatic device.
Patent GB-663326-A (GB)
Title: Improvements in or relating to multiple contact electric switches
IPC: H01H19/56
Filed: 1949-08-05
Abstract: 663,326. Contacts; electromagnetic switches. DAVIES & SON, Ltd., A. E., DAVIES, J. E., and ALLEN, E. H. July 31, 1950. [Aug. 5, 1949] No. 20398/49. Class 38 (v). Each fixed contact 1 of a multiple contact electric switch comprises a rigid strip of material with its end twisted to form an inclined contact surface engageable by a resilient moving contact wire 3, which is thereby deflected sideways to its general plane of movement giving a rubbing action which provides good contact. In the form shown there are seven wires 3 arranged one behind the other with their L.H. ends fixed. They are operated by rotation of an insulating bar 5 about an axis 6, the bar being biased by a weight 8 and operated by a lever 9 itself operated electromagnetically.
Patent GB-597079-A (GB)
Title: Improvements in and relating to holders for thermionic valves and the like
IPC: H01R33/76
Filed: 1945-08-09
Abstract: 597,079. Valve holders. CINCH MANUFACTURING CORPORATION. Aug. 9, 1945, No. 20461. Convention date, Aug. 16, 1944. [Class 38 (i)] A holder for thermionic valves comprises a moulded body 1 provided with prong-receiving holes 3 and bores 4 for holding contacts 10 which with their extensions 11, 12 are loosely retained in the holder by a disc 6. The disc 6 is secured to the body by an eyelet 15 cushioned by a resilient packing 22 and a spring washer 23 retained in position by a beading 17 on the eyelet. The disc 6 has bosses 6a which isolate the contacts. The eyelet is formed of two semi-cylindrical portions 16 bent about an apertured central portion 18 leaving opening 20 for earthing.
Patent GB-356369-A (GB)
Title: Improvements in and relating to yarn wrapping mechanism for use in the manufacture of hair or like yarn
IPC: D02G3/36
Filed: 1930-07-07
Abstract: 356,369. Spinning hair or like yarns. GASKELL, M., 5, Victoria Street, Sutton, near Keighley, Yorkshire. July 7, 1930, No. 20491. [Classes 120 (ii) and 120 (iii).] Yarn wrapping or binding and twisting mechanism of the kind wherein the yarn passes through a rotating member carrying the wrapping or binding material comprises a vertical, driven, depending, hollow spindle S mounted on a rail R and carrying loosely the wrapping or binding material Won a bobbin B. The spindle is provided with a cone at the top, and with a removable end-piece at the bottom in the form of a ring flange F and traveller, F<1>. An eccentric yarn outlet H<1> is formed just below the ring flange F. The ring fitting F, is in the form of a cup F2 which is secured in position by spring, screw or like means. The core thread passes down through the hollow spindle and is wrapped by the wrapping W which passes through the traveller F<1> and the wrapped thread then passes via a cone D to a receiving bobbin below. The cone D is carried by an arm D<1> slidable in a bearing D<2> and pressed to its normal position by a spring D<3>. For doffing purposes the cone is pressed to one side and a plunger D4 engages in a recess D<5> to hold the cone in the clear position. Specification 252,878, [Class 120 (ii), Spinning, twisting, &c.], is referred to.
Patent GB-597113-A (GB)
Title: A bearing alloy
IPC: C22C13/00
Filed: 1945-08-10
Abstract: An alloy, particularly suitable for the manufacture of bearings, contains 0.02-10.0 per cent silicon, 20.0-75.0 per cent tin, the remainder being aluminium.  The alloy may also include one or more of the following elements, antimony not exceeding 12.0 per cent, nickel not exceeding 9.0 per cent, manganese not exceeding 6.0 per cent, silver not exceeding 10.0 per cent, zinc not exceeding 12.0 per cent, iron not exceeding 3.0 per cent, magnesium not exceeding 5.0 per cent, lead not exceeding 10.0 per cent, copper not exceeding 6.0 per cent, cadmium not exceeding 10.0 per cent, the maximum total of these elements not exceeding 15.0 per cent.  One or more of arsenic, beryllium, calcium, cerium, chromium, bismuth, cobalt, niobium, lanthanum, lithium, molybdenum, tantalum, tellurium, thallium, thorium, titanium, tungsten, vanadium and phosphorus may be present but the quantity of these elements must not exceed 5.0 per cent in total and 4.5 per cent individually.  One or more of boron, zirconium, barium, sodium, potassium and yttrium may be present up to a total not exceeding 0.35 per cent.  The alloy may be used in the cast condition or it may be given a stabilising treatment.  The p Specification refers to specific alloys suitable for use as bearings in various parts of machines and internal combustion engines.