baber/WOPTO huggingface dataset:
Patent GB-1498436-A (GB)
Title: Process for the production of butadiene polymers having a wide molecular weight distribution
IPC: C08F4/00
Filed: 1975-05-23
Abstract: 1498436 Continuous adiabatic polymerization of butadiene CHEMISCHE WERKE HULS AG 23 May 1975 [9 Aug 1974] 22561/75 Heading C3P A butadiene polymer with a wide molecular weight distribution is obtained by a continuous adiabatic polymerization in a flow tube in the presence of an organolithium initiator, the variation of molecular weight within the products obtained being effected by periodically changing the initiator concentration at the inlet, the mixing of the zones of differing molecular weight formed being achieved by the usual back mixing in the tube. A Lewis base such as an ether or t-amine may also be present.
Patent GB-1116053-A (GB)
Title: High-energy fuels
Inventor: MULLER ERNST WILLI
IPC: C07C5/05
Filed: 1966-05-20
Abstract: Fuels of improved volumetric calorific value comprise a major amount of a distillate fuel and a minor amount (e.g. 5-40%) of a substituted fulvene of formula <FORM:1116053/C4-C5/1> when n is 0 or 1, R1 is phenyl or phenyl substituted by C1- 4 alkyl, R2 is C1- 4 alkyl or R1, and R3 is C1- 4 alkyl, or a partially hydrogenated derivative thereof wherein aromatic unsaturation is still present but one or more of the fulvene double bonds is saturated (but excluding cyclopentyl alkyl phenyl methanes of a given formula).  The distillate fuel may be gasoline, kerosene, gas oil, or a gasoline/kerosene mixture such as aviation turbine fuel.  Diaryl fulvenes and diaryl methyl-fulvenes may be prepared by reacting cyclopentadiene or methyl-cyclopentadiene with a diaryl ketone, e.g. a mixture of diphenyl 2- and 3-methyl fulvenes is prepared by reacting methyl-cyclopentadiene with benzophenone in the presence of sodium and ethanol.  Partial hydrogenation of this fulvene mixture in the presence of Raney nickel yields a mixture of 2- and 3-methylcyclopentyl diphenyl methanes. Cyclopentyl diphenyl methane is also prepared by partial hydrogenation of diphenyl fulvene.
Patent GB-1514947-A (GB)
Title: Auto exhaust catalysts and preparation thereof and complex for use thereon
IPC: C01B32/50
Filed: 1975-05-23
Abstract: 1514947 Oxidation catalysts W R GRACE & CO 23 May 1975 [5 June 1974] 22635/75 Heading B1E [Also in Division C1] A solution of a platinum and/or palladium sulphito complex in the form of a free acid, or a Na, K or NH 4  salt is prepared and is impregnated onto a support which is then dried and activated for use as car exhaust catalyst. The complex may be a sodium, potassium or ammonium salt of the formula where M is NH 4 <SP>+</SP>. K<SP>+</SP> or Na<SP>+</SP> and X is Pt and/or Pd preferably Pt 0À58  . Pd 0À42 ; alternatively M may be hydrogen. The complex may also be a platinum-palladium sulphito complex salt in which the ratio of Pt to Pd is in the range Pt 0À99  Pd 0À01  to Pt 0À01  Pd 0À99 . The complex may be prepared by treating chloroplatinic acid and/or palladium nitrate solutions with either gaseous SO 2  or ammonium, sodium or potassium bisulphite; or by treating chloroplatinic acid and/or palladium nitrite solution with gaseous SO 2 . The support may be alumina (optionally stabilized by 5 wt. % of Ce 2 O 3 ), silica-alumina, mullite, cordierite or zirconia. The activation of the impregnated and dried support may be carried out by air calcination or hydrogen reduction.
Patent GB-358177-A (GB)
Title: Improvements relating to variable speed gearing
IPC: F16H3/42
Filed: 1930-07-28
Abstract: 358,177. Variable speed gearing. WILDMAN, F., 118, St. Paul's Road, Camden Town, London. July 28, 1930, No. 22652. [Class 80 (ii).] Continuously-variable toothed gearing varies automatically according to the load by the movement of spiral-toothed pinions 3 along in the spaces between driving and driven spiral-toothed cones 1, 2. Each pinion 3 turns on a, spigot B carried by a block 4 which slides on guide-bars 5 parallel to the cone surfaces. The gear may be changed by hand one way by disengaging the clutch 8 connecting cone 1 to driving-shaft 6. It may be changed the other way by disengaging the clutches 81 connecting the cones 2 to shafts 61 geared at 9, 10 to a driven shaft 10<1>. Each clutch comprises a sleeve 8 which disengages spring-expanded dogs 18 from indentations inside the cone, such sleeve being slightly coned externally to effect frictional engagement. The speed in operation at any time may be locked by turning crank shafts 12 from a Bowden wire 14. The blocks 4 carry friction grip devices which are expanded into engagement to clamp the block by such turning of the shaft 12 which passes through a block and grip device. A suitable reversing-gear is shown at 11.
Patent GB-672331-A (GB)
Title: Improvements in or relating to liquid cooling stacks or towers
IPC: F28F25/08
Filed: 1949-03-18
Abstract: 672,331. Treating liquids with gases. FILM COOLING TOWERS (1925), Ltd., BRANCZIK, E. A. C., and HOWE, E. A. A. March 1950 [March 18, 1949], No. 22750/51. Divided out of 672,244. Drawings to Specification. Class 55 (ii). [Also in Group XIII] In a cooling-tower packing substantially as described in Specification 672,244, spaced opentopped spreader troughs 14 are retained in position above the top tier of laths 1 by slotted spacer members 16 engaging over the tops of the sides of the troughs and attached to locating posts 12 or 12a extending upwards through the tiers of laths. Specification 672,243 also is referred to.
Patent GB-1398676-A (GB)
Title: Preparation of cyclobutanones from glutaric anhydrides
IPC: C07C45/60
Filed: 1973-05-14
Abstract: 1398676 Preparation of cyclobutanones from glutaric anhydrides INTERNATIONAL BUSINESS MACHINES CORP 14 May 1973 [12 June 1972] 22758/73 Heading C2C The invention comprises a process for the production of a cyclobutanone in which a substituted or unsubstituted glutaric anhydride is subjected to irradiation with ultra violet light in the vapour phase at a temperature within the range from 120‹ to 300‹ C.
Patent GB-187777-A (GB)
Title: Improvements in and relating to motor operated rotary cultivators
IPC: A01B33/00
Filed: 1921-08-29
Abstract: 187,777. Dagna, E. Aug. 29, 1921. Rotary-tool machines with adjustable tool frames; travelling and propelling gear.-A cultivating machine has motoroperated rotary tools mounted on a shaft 9 adjustably arranged at the side of and parallel to the direction of travel of the machine 1 supported by wheels 2, and end shares 12 one of which is adapted to be lowered into position to plough a strip of soil adjoining the furrow formed by the rotary tool members; or, instead of the shares, archimedean screws carried on shafts arranged at right angles to the shaft 9, may be employed. Pivoted shafts 16 are provided for traction, or the machine may be propelled by its own engine. The shaft 9 is supported by levers 3 pivoted at 4 to the chassis 1, and it is held adjustably in the desired position by pawls 7 on the levers 3 engaging toothed quadrants 6. The discs 10 are inclined relatively to the shaft 9, and preferably inclined alternately in opposite directions, and they are dimensioned so that they progressively decrease in diameter towards the shaft ends. Between these discs are members 11 with straight or curved radial teeth for stirring the soil. When the machine is moving in the direction of the arrow, the front share is raised by lowering the wheel 15 so that it rests on the ground. The back share turns the earth into the furrow formed by the front members 10, 11. In the arrangement wherein screw members are employed in place of the shares, they are carried by an arm which can be rocked to lower the rear screw into the operative position, the screws being driven from the engine by a chain drive.
Patent GB-1332758-A (GB)
Title: Ring traveller insertion tool
IPC: D01H17/02
Filed: 1972-05-16
Abstract: 1332758 Storing and inserting ring travellers W REINERS and H J FURST [trading as REINERS & FURST] 16 May 1972 [27 May 1971] 23015/72 Heading D1F A ring-traveller support or magazine 1 is releasably affixed to a traveller inserting tool 2 by means of a clamping device. Single travellers 3 successively transferred from one end 16 of the support by bars 14, 15, are pressed over the spinning or twisting rail from the outside thereof and when the support is empty it is quickly replaced by one loaded with travellers. As shown, the support is positioned on a mounting plate 13 of the tool by passing bolts 5 along guide slots 6 and secured by rotating a clamping element 7 so that arms 9', 9", bear on the bolt heads. Alternative clamping devices may comprise wing nuts and corresponding threaded bolts, press-button connections, screw caps or a clamping spring or strap (not shown).
Patent GB-693377-A (GB)
Title: Improvements in pedals for cycles
Inventor: TOVEY WILLIAM
IPC: B62M3/08
Filed: 1950-09-20
Abstract: 693,377. Cycle pedals. WARNE, WRIGHT & ROWLAND, Ltd. Nov. 12, 1951 [Sept. 20, 1950], No. 23035/50. Class 136 (ii) In a cycle pedal having a pedal body fixed to a barrel 4 which is rotatably mounted on a spindle 2 screwed at one end to a pedal crank, the tread member 1 consists of a triangular box with end supports 7, 8 having holes 9, 10 to receive the bearing cups 5, 5a, of the barrel 4, the barrel being positioned on the tread member by pedal plates 11, 12 secured to the tread member. Lugs 20 formed on the member 1 are clamped between the support 7 and the plate 11 by rivets 13. A shouldered shank 16 on the bearing cup 5 engages in a bore in the plate 11. Lugs 21 on the other end of the member 1 overlap the outer side of the support 8 and keys 22 on the support engage in gaps 23 between the lugs 21. Screws 14 secure the plate 12 to the support 8. The barrel 4 has a shouldered outer end 19 which is engaged by an annular part 17 of a recess 18 in the plate 12. A rubber sleeve 25 encloses the tread member 1.
Patent GB-1429525-A (GB)
Title: Process and reagent for the quantitative determination of  cholesterol
IPC: C12Q1/60
Filed: 1973-05-15
Abstract: 1429525 Determination of cholesterol BOEHRINGER MANNHEIM GmbH 15 May 1973 [17 May 1972] 23082/73 Heading G1B Cholesterol in an aqueous medium is quantitatively determined by incubating the medium with cholesterol oxidase and thereafter determining either the amount of oxygen used up or the amount of hydrogen peroxide or of cholestenone formed, on the basis of the reaction. cholesterol oxidase cholesterol + O 2  # cholestonone + H 2  O 2  (A) The amount of oxygen used up may be measured polarometrically, (B) the amount of hydrogen peroxide formed may be determined enzymatically with the use of catalase or peroxidase, (C) the amount of cholestenone is measured directly by direct absorption spectrophotometry or with the use of a Keto group-reacting compound. Bound or total cholesterol is determined by testing a sample in which the free cholesterol concentration has already been tested or a separate, untested sample, respectively, after such samples have been saponified using alcoholic potassium hydroxide solution or cholesterol esterase. Reagent Kito containing specified proportions of cholesterol oxidase and the following constituents are disclosed: (A) surface-active agent (hydroxpolyethoxydodecane) in phosphate buffer, (B) catalase, acetylacetone, methanol surface-active agent and buffer OR peroxidase, a chromogen (2, 2 -aminobenzthiazoline-sulphonic acid), surface-active agent and buffer, (C) Keto group-reacting compound (2, 4-dinitro-phenylhydrozine and surface-active agent. A reagent for saponifying esterified cholesterol (as mentioned above) may also be included.
Patent GB-374331-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B27/18
Filed: 1931-08-18
Abstract: 374,331. Sewing-machines. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.--- (Union Special Machine Co. ; 400, North Franklin Street, Chicago, U.S.A.) Aug. 18, 1931, No. 23202. [Class 112.] Overhead sewing- machines.-The operating mechanism for the feed wheels of an overhead sewing- machine is arranged entirely above the wheels. An inter. mittent motion is imparted to the feed wheel by a clutch mechanism 9, 10. The main shaft 22 carries an eccentric 21 connected to a bell-crank lever 18, 16. The arm 16 is slotted to receive an adjusting link 12 which is connected to a ball stud 13 carried on an arm attached to the clutch disc 10. To enable the feed wheel 5 to be moved away from the wheel 4, the shaft 26 is mounted in a sleeve 27 which in turn is mounted in a sleeve 28 carried by a rock lever 29. A shaft 35 engages a recess 36 in the shaft 26 and is keyed to the shalt 26 by a lug 37, which engages a slot. The shaft 35 is connected by a universal joint 38 to a shaft 39 which is geared to the shaft of the feed wheel 4. The position of the wheel 5 is adjusted relative to the wheel 4 by a lever 46 and rod 50. The stitching mecharism comprises a curved needle 52 and a looper 59. The looper 59 is mounted in an arm 61 which oscillates on a fixed stud 53. The arm 61 has a projecting arm 67 which is oscillated by an eccentric 69. Co-operating with the looper 59 is a secondary non-thread carrying looper 70 with a forked end which engages the thread loop of the looper 59 and positions it for entry by the needle. A stitch finger 80 and stripper member 85 are provided. An uncurler 90 is mounted on an arm 91 pivoted at 92 to a bracket 93. The bracket 93 is in turn secured to a supporting bracket 94 to permit adjustment. The parts are lubricated from an oil sump 97 by passages 99, 100. Specification 259,208, [Class 112, Sewing &c.], is referred to.
Patent GB-424686-A (GB)
Title: An improved yarn particularly for use in making textile goods
IPC: D04B1/02
Filed: 1933-08-21
Abstract: 424,686. Yarns. SINFRA AKT.-GES., St. Gallen, Switzerland. Aug. 21, 1933, Nos. 23282, 23283, and 23284. Convention dates, March 17, March 17, and March 18. [Class 120 (iii)] [See also Group VIII] Yarn comprises a knitted carrier body or core 2, which may be tubular, having loops 3 knitted thereinto and projecting therefrom. The loops may be arranged in helically disposed rows round the core, the rows preferably being one or more stitches apart. Different coloured threads may be used. The yarn may be made on a circular knitting machine, the needles of which are divided into two groups, of which one group knits the core and the other the loops, the two groups being actuated by separate cams arranged axially or radially displaced ; the needles forming the loops are supplied with thread only at every alternate working stroke. The upper cam, Fig. 6, carrying eight needles is supplied with two threads F<1>, F<2> to make the core, and the lower cam also with eight needles is supplied with a single thread S to make the loops. In a modified cam arrangement, Fig. 8, a loop yarn is produced in which the helical rows of loops touch one another. Three or more cams may be employed to produce a yarn in which the rows of loops overlap.
Patent GB-233230-A (GB)
Abstract: 233,230. Freeman, H., and Bloomfield, F. P. Oct. 6, 1924. Drawings to Specification. Moulds.-In moulding hollow or tubular reinforced-concrete girders, internal transverse partitions or diaphragms are formed by means of permanent cores consisting of wire netting covered with tatred felt, pressed to shape, and with the ends turned down. The diaphragms are cast between the ends of the cores.
Patent GB-633176-A (GB)
Title: Improvements in and relating to the production of aromatic aldehydes
IPC: C07C45/49
Filed: 1947-08-22
Abstract: Aromatic aldehydes are manufactured by subjecting an aromatic hydrocarbon and carbon monoxide to the action of a mixed hydrogen fluoride-boron trifluoride catalyst at a pressure in excess of atmospheric (e.g. 10-1000 atmospheres) and at low or moderate temperature (e.g. -80 DEG  to +50 DEG  C., preferably -50 DEG  to +20 DEG  C.), and thereafter separating the catalyst and distilling off the aromatic aldehyde.  The amount of catalyst is preferably about 0.5-1.5 mols. of boron trifluoride per mol. of hydrocarbon and an approximately equivalent amount of hydrogen fluoride.  The separation of the catalyst from the product may be effected by combining it with a metal halide (e.g. sodium, lithium or calcium fluoride) or by neutralizing it (e.g. with anhydrous ammonia). Examples describe the preparation of p-tolualdehyde from toluene, benzaldehyde from benzene, 2:4- and 2 : 5-dimethylbenzaldehyde from m-and p-xylene respectively, 2 : 4 : 6-trimethylbenzaldehyde from mesitylene, p-phenylbenzaldehyde from diphenyl and a -naphthaldehyde from naphthalene.  Other starting materials specified are phenanthrene, diarylmethanes, ethylbenzene, propylbenzenes, butylbenzenes and hexylbenzenes.
Patent GB-1406759-A (GB)
Title: Peristaltic pumping apparatus for a pasty cement-based material such as mortar or concrete
IPC: E04G21/04
Filed: 1973-05-16
Abstract: 1406759 Rotary positive-displacement fluidmachines TUKIEM TRUST REG 16 May 1973 [25 May 1972] 23345/73 Heading F1F A peristaltic pump for a pasty cement-based material e.g. mortar or concrete, has a pumping tube 10 compressed by rollers 12 on a rotary spider 11 and supported by a flat bed 9, which can be displaced downwardly about a pivot 3 against the action of at least one spring 8 so as to obviate undue pressure on the material being pumped. The springs may be adjustable by a screw 6 and the spider may carry loose rollers 19 that engage with a stop 18 to limit compression of the tube. The tube may be furnished with ribs 20 that co-operate with corresponding teeth 21, 22 on the rollers 12 and bed 9. The spider may be driven by a motor 13 and the said material may be sucked into the tube from a trough 15. Reference has been directed by the Comptroller to Specification 1347642.
Patent GB-429454-A (GB)
Title: Method of modulating short and ultra-short waves for wireless signalling and the like
IPC: H03C7/02
Filed: 1934-08-13
Abstract: 429,454. Microphones. ESAU, A., 15, Wilhelm Stadestrasse, and PFETSCHER, 0., 5A, Burgweg, both in Jena, Germany. Aug. 13, 1934, No. 23360. Convention date, Aug. 11, 1933. [Class 40 (iv)] [See also Group XL] Short radio waves are modulated by a microphone forming a leakage path across a high - frequency circuit such as a pair of Lecher wires. In Fig. 1, the Lecher wires 1, 2 have carbon rods 3, 4 inserted at a voltage anti-node which are bridged by a carbon lead 5 laid on them, the contact pressure being varied by impinging sound waves. Granules may be provided at the contact points. In Fig. 2, a transverse metal band 6 is slightly spaced from the Lecher wires 1, 2 the shunt capacity thus formed being varied by sound waves.
Patent GB-1161929-A (GB)
Title: Mixing Apparatus
IPC: B01F15/00
Filed: 1967-05-19
Abstract: 1,161,929. Mixing apparatus. ATLANTIC RESEARCH CORP. 19 May, 1967 [10 June, 1966], No. 23377/67. Heading B1C.  Mixing apparatus comprises a container 60 the inner surface of which is a surface of revolution about a vertical axis 61 (e.g. 17 is conical or cylindrical) -and mixing blades rotating about the axis 61. The blades are in two parts, outer helical ribbons .65 and inner helical ribbons 70: The helixes of the inner and outer ribbons may be of the same or opposite hand, and the ribbons may be fixed together (Figs. 1-4, not shown) or fixed to separately driven concentric shafts 66, 71, so that they can 'be driven at different speeds in the same or opposite directions. The outer envelope of the outer ribbons conforms to the inner surface of the container, but the blades 'may be raised to vary the spacing (in the case of a conical container) by a screw 74. This screw may be used to reciprocate the blades vertically to promote, further mixing. The ribbons may both urge the mixture in the same direction a increase to the rate of discharge through the opening 63 (downwards) or to promote aeration, or if the container is avacuated, deaeration (upwards). The tower end of the blades may be supported by a bearing in the base of the. container (Fig. 3 not shown) and the drive shaft or shafts may .be hollow to allow a viscosity or temperature sensor 78 to be inserted into lie mix. Further sensors 76, 77 may be fixed to the blades. The blades and the wall 60 of the container may be formed with passages for heating or cooling fluid.
Patent GB-1034683-A (GB)
Title: Improvements in and relating to heating apparatus for articles of food and the like
Inventor: SMITH PETER HAROLD
IPC: A47J27/082
Filed: 1963-06-12
Abstract: 1,034,683. R.F. couplings; microwave ovens. MICROTHERM Ltd. June 12, 1964 [June 12, 1963], No. 23392/63. Headings H4A and H5H. In a microwave-oven 10, to evenly heat, e.g. a " hot dog " it is rotated in a low-loss dielectric tube, shielded by a baffle 20 from the radiation source. The tube is closed at each end by doors such as those described in Specification 977,776. The oven is fed through slot 14 from a magnetron 11 coupled by a fixed reflection element 31 to a waveguide 12 having coarse and fine tuning by plug and screw 21, 23. A slot 32 is provided in the upper surface of the waveguide to allow a measuring probe to be inserted. The preferred standing wave ratio is 1: 1 in the waveguide and 1À5: 1 in the magnetron. The Specification describes the construction of a " hot dog " with reference to Figs. 3, 4, 13, 14 (not shown), and explains the importance of concentricity and axial symmetry of the frankfurter and bun to keep the magnetron operating at a predetermined point on its performance curve as the hot-dog is rotated.
Patent GB-239064-A (GB)
Title: Improvements in driers
IPC: F26B3/30
Filed: 1924-10-04
Abstract: 239,064. Judelson, J. Oct. 4, 1924. Forced ventilation; air, heating.-A domestic drying chamber formed with hollow walls is provided with a heater comprising a casing 2 containing gas burners 11 and communicating with flues 3, 4 through which the products of combustion pass to an outlet pipe 9 which communicates with the perforated end of the flue 3 and with a stack 8 in the chamber. Moisture-laden air is withdrawn from the chamber through the perforations in a box 6 which is connected to the stack.
Patent GB-642419-A (GB)
Title: Improvements in drafting mechanisms for textile fibres for use with spinning machines
IPC: D01H5/22
Filed: 1947-08-26
Abstract: 642,419. Drafting mechanism for textile fibres. TERMENS, J. M. Aug. 26, 1947, No. 23514. Convention date, Sept. 9, 1946. [Classes 120(i) and 120(ii)] A drafting mechanism for textile fibres comprises a pair of feed rollers A, a, a first condenser D located between said feed rollers and a pair of intermediate drafting rollers B, b; a tensioning or pressure roller c; a second condenser E and a pair of main drafting rollers F, f, said second condenser being freely suspended between the intermediate and the main drafting rollers. The condenser E may have an operating member k to facilitate its accurate positioning, the condenser D may be connected to a reciprocable sliver guide H and, further, the two condensers may be mechanically interconnected. The roller weighting device J may be applied to the mechanism.
Patent GB-1580008-A (GB)
Title: Automatic head tracking system
IPC: G11B5/588
Filed: 1978-05-26
Abstract: During the reproduction of signals, a magnetic head (1) is moved along the recording track. An electrically deflectable securing means (2) for the magnetic head is fed an electric signal for deflecting the magnetic head. The deflecting signal is generated in a deflecting-signal generator (11, 12) according to the deflection of the magnetic head with respect to a position of rest. An envelope detector (5) serves for detecting the envelope of the signal which is emitted by the magnetic head. With a multiplying circuit (22), the detected envelope is demodulated synchronously with the deflecting signal, in order to obtain from it the tracking-error signal, which represents the deflection from the position of rest. In the adding circuit (8), the tracking-error signal and the deflecting signal are added. <IMAGE>