baber/WOPTO huggingface dataset:
Patent GB-1003229-A (GB)
Title: Hydrocarbon purification process
IPC: C07C7/12
Filed: 1962-06-27
Abstract: Substantially anhydrous hydrocarbons, contaminated with the reaction products of water, boron trifluoride and a boron trifluoride-modified substantially anhydrous, inorganic refractory oxide are purified by contact in the liquid phase with a substantially anhydrous solid inorganic oxide.  The hydrocarbon may be, for example, the product of alkylating an aromatic hydrocarbon with an olefin in the presence of boron trifluoride and a boron trifluoride-modified oxide and especially the unreacted aromatic hydrocarbon separated from the product for recycle; many mono- and poly-cyclic aromatic hydrocarbons are specified and paraffins also.  The purifying agent may be alumina, silica, titania, zirconia, chromia, zinc oxide, magnesia, calcium oxide, silica-magnesia, silica-alumina - magnesia, silica - alumina - zirconia, chromia - alumina, alumina - boria, alumina - sodium meta-aluminate or silica-zirconia.  The purification is effected at 0-300 DEG  C. and 1-200 atmospheres and the oxide may be regenerated by treatment at high temperature with an inert gas or high pressure steam.
Patent GB-1041408-A (GB)
Title: Improvements in or relating to the production of sodium bicarbonate
IPC: B01F1/00
Filed: 1963-06-20
Abstract: A stabilized supersaturated sodium chloride solution for use in the ammonia-soda process is obtained by evaporation of sodium chloride solution in the presence of at least 10-5 gm. molecules per 100 gms. of water of a soluble ferrocyanide (e.g. sodium), a soluble ferricyanide, a soluble cadmium salt or nitrilotriacetamide, to a degree insufficient to effect crystallization of the sodium chloride. The solution obtained is then treated with ammonia and carbon dioxide to crystallize sodium bicarbonate according to the ammonia-soda process.
Patent GB-242416-A (GB)
Title: Improvements in or relating to power transmission mechanism
IPC: F16G5/20
Filed: 1924-10-17
Abstract: 242,416. Abbott, G. J. Oct. 17, 1924. Expanding-pulley gearing. - A transmission member adapted for variable cone pulleys comprises a chain 1, Figs. 1, 2, and 3, carrying upon each link a group of plates 3 adapted to slide transversely so that their ends form compound teeth of variable pitch. These built-up teeth engage radial recesses 11 in the twin pulley cones. Each link may comprise a pair of link plates 1 with arcuate slots 2 within which the sliding plates 3 are packed with direct engagement, projections 5, Fig. 2, preventing the plates 3 from falling out. The plates 3 taper slightly to engage the tapering recesses 11. In a modification shown in Figs. 6 and 7, there is a plurality of link plates 12, and the sliding plates 15 are packed within a metal sheath or case 14 passing through the arcuate slots 13 in the links. In a further modification, the chain consists simply of the sheaths 14 made strong and pivoted to each other end to end.
Patent GB-1147823-A (GB)
Title: Control Mechanism for the Adjustment of Brush Body Supports and the like in Brush Producing Machines
IPC: A46D3/06
Filed: 1966-06-02
Abstract: 1,147,823. Brush-making machines. H. ZAHORANSKY [trading as ANTON ZAHORANSKY]. 2 June, 1966 [2 June, 1965; 12 Jan., 1966], No. 24711/66. Heading A4K. [Also in Divisions B3 and G3] In a brush drilling and filling machine, in which the stock holder positioning mechanism is controlled by a programmed tape 32a, pawl actuating mechanisms 143-146 scan the tape transversely to its direction of intermittent feed and actuate the pawls 157 to provide the required movement of ratchet wheels 150. The ratchet wheels 150 rotate worms (87) meshing with worm segments (88) formed on levers (20) of the stock holder positioning link work. In one form (Fig. 6, not shown), projections (33) on the tape (32) engage the ends of Bowden cables (41) to actuate the pawls (48-50) mechanically. In another form (Fig. 13, not shown), feelers (114) enter holes 110 in tape 32a and simultaneously lock pawls (104) in engagement with ratchet wheels (103). In Fig. 16, reciprocating frame 173 carries a scanning head 63b over stationary tape 32a and simultaneously rocks arms 156 by racks 168, 169 meshing with toothed segments 170, 171. When, during the forward stroke of frame 173, the scanning head 63b encounters an hole 110, a light source (148) actuates a photo-electric device (149) therethrough. Simultaneously, device 149 actuates electromagnet 151 to bring pawl 157 into engagement with ratchet wheel 150 for the remainder of the stroke. For the return stroke, the electromagnet 151 is de-energized and the tape 32a stepped forwardly, in preparation for the heat scanning stroke. Pawls 157 may, alternatively, be electro-pneumatically operated. The punched tape 32a may be replaced by an embossed metal tape (178, Fig. 21, not shown) scanned by a switchoperating feeler (181), arranged to prevent simultaneous energization of both electromagnets 151 of the same ratchet wheel 150.
Patent GB-1412112-A (GB)
Title: Gynaecological device
IPC: A61M31/00
Filed: 1972-09-13
Abstract: 1412112 Gynaecological device R ALEMANY 13 Sept 1972 [17 Sept 1971] 24717/75 Divided out of 1412111 Heading A5R The subject-matter of the Specification is identical with that described in Specification of the Parent Application, but the claims are concerned with (Figures 1-9, and Figure 16, not shown) a gynaecological device comprising a pocket (1) constituted by a single sheet of flexible and impermeable plastics material and a tampon (2) or pessary (14) within the pocket, part of the pocket forming an invagination (1b) in which the tampon or pessary is at least partly enclosed, and the remainder (1a) of the pocket being arranged so that it can be opened to substantially cover the hand of the user during use.
Patent GB-260966-A (GB)
Title: Improvements in aircraft
IPC: B64C3/00
Filed: 1926-10-06
Abstract: 260,966. Dornier-Metallauten Ges., and Dornier, C. Nov. 4, 1925. [Convention date]. Planes and wings, construction, arrangement, and disposition of.-The bracing members c between a plane and the fuselage are rigidly or hingedly fixed to the ends of a transverse support b connected to the longitudinal girders a<1>, a<2> of the wing and extending beyond them to the leading and trailing edges.
Patent GB-1135829-A (GB)
Title: An underground tank for storing liquid
IPC: B65D88/76
Filed: 1966-06-03
Abstract: 1,135,829. Underground tanks for liquids. ISHIKAWAJIMA HARIMA JUKOGYO K.K. 3 June, 1966 [3 June, 1965], No. 24833/66. Heading E1T. An underground storage tank for liquids is made up from a base 6, roof 4, comer segments 5 and reinforced concrete segments 7 which have a steel lining and are interconnected by various joints for details of which the Specification and Figs. 6-11 (not shown), should be referred to.
Patent GB-188845-A (GB)
Title: Free burning candles of magnesium
IPC: F21K5/00
Filed: 1921-09-19
Abstract: 188,845. Boehm, W. Sept. 19, 1921. Drawings to Specification. Fumigants.-Substances emitting odours when heated may be arranged in or on a magnesium " candle " or candle carrier. The candle consists of magnesium ribbon, wire gauze or the like attached to a supporting body made of incombustible or difficultly combustible, material such as iron wire or perforated sheet iron strip.
Patent GB-855175-A (GB)
Title: Improvements relating to thread protectors for protecting the screwed ends of rods
IPC: E21B17/00
Filed: 1957-08-07
Abstract: 855,175. Locking nuts &c. HIGGINS, E. F. Aug. 7, 1957, No. 24916/57. Class 89(1). A protector for the screwed-end a of a steelrod d consists of a capnut 12, e.g. of a zinc diecasting-alloy, having a greater coefficient of thermal-expansion than steel. The nut has a screwed-part 13 adjacent the closed-end 11, and a flared-part 15 of greater internal-diameter, and bearing against a shoulder b on the rod. The thread-pitch p of the nut is slightly less than pitch p<1> of the rod, so that when the nut is tightened, compression occurs in part 15 and the threads are wedged together over a small area 20. As rod d is heated, e.g. after painting, the area 20 increases and part 15 slides in contact with the shoulder-bevel g.
Patent GB-673941-A (GB)
Title: Improvements in or relating to the purification of ether
IPC: C07C41/44
Filed: 1948-09-23
Abstract: Ether is purified by washing the crude ether with an aqueous solution of sodium or potassium bisulphite prepared by dissolving sulphur dioxide in the respective hydroxide or carbonate until a pH value is obtained lying between the values <FORM:0673941/IV (b)/1> in which A(8) represents the factor indicating the dilution with respect to a standard bisulphite solution obtained by treating an 8 per cent NaOH solution with SO2.  Thus, if a bisulphite solution prepared from a 20 per cent NaOH solution is used for washing the ether the value of A(8) is 8/20 , whereas if a 2 per cent NaOH solution is used the dilution factor is 8/2=4.  In the case of bisulphite solutions prepared from sodium carbonate solutions of varying concentrations it is stated that only a negligible deviation in the pH value is obtained by considering these solutions to contain the same amount of Na2O as NaOH solutions of the same concentration so that the value of A8 in the case of, for example, a 5, 20 or a 50 per cent sodium carbonate solution is considered equivalent to that of a 5, 20 or 50 per cent solution solution of NaOH, respectively. Bisulphite solutions prepared from potassium carbonate and potassium hydroxide solutions may also be used, the method of determining A(8) in these cases being based on respective molecular weights of the potassium compounds and sodium hydroxide. Thus a 20 per cent K2CO3 solution, for example, is equivalent to a 12 per cent NaOH solution, whereas a 20 per cent solution of KOH is approximately equivalent to a 14.3 per cent solution of NaOH.  It is advisable to carry out the washing process continuously and in counter current, e.g. as in Specification 649,978.  To prepare ether suitable for use as a narcotic an immediate washing with water, drying and rectification of the purified ether is required.  In order to improve the stability of the purified ether so as to make it unnecessary to work it up immediately to obtain narcotic ether, the treatment with the bisulphite solution is carried out by adjusting the pH value of the solution to within narrower limits, viz:- <FORM:0673941/IV (b)/2> In an example, ether containing ethanol, water, aldehydes and unsaturated compounds and peroxides is purified by washing with a sodium bisulphite solution made by dissolving gaseous sulphur dioxide in a 20 per cent by weight aqueous solution of sodium carbonate until the pH has decreased to 5.4.  The purified ether is then washed with water, dried and rectified.
Patent GB-224059-A (GB)
Title: A new flax pulling machine
IPC: A01D45/06
Filed: 1923-10-08
Abstract: 224,059. Kerr, J. Oct. 8, 1923. Flax-pulling machines.-The flax passes between forwardly-projecting laths L carried on a rectangular frame A and held apart against the tension of springs H by a lever G engaging a rack G<2> and connected by a rod R to the outside lath. Webbing or similar flexible material W connects the laths. After the laths have been introduced into the flax the lever G is released and the laths move laterally under the action of the springs H, gripping the flap. The machine is then rocked on a small wheel B<1> mounted on arcuate brackets B thus pulling the flax.
Patent GB-1163794-A (GB)
Title: New Monoazo Dyestuffs, their Production and Use
IPC: C08K5/32
Filed: 1967-05-31
Abstract: 1,163,794. Monoazo pigment dyes; printing inks. J. R. GEIGY AG. 31 May, 1967 [1 June, 1966], No. 25009/67. Headings C4A and C4P. The invention comprises monoazo pigment dyes of formula wherein X is Cl or Br, which are prepared by coupling diazotized 2-methoxy-4-nitroaniline with acetoacet - (2 - methyl - 4 - chloro - or bromo-anilide). The coupling may take place in the presence of alkanols, cyclic ethers, carboxylic acids or their amides, tertiary nitrogen bases, aromatic hydrocarbons which may be nitro- or halo-substituted, non-ionic or ionic dispersing agents, resins or resin soaps, protective colloids, oils and inorganic substrata. The pigment dyes are used to colour organic materials, in particular printing inks, in greenish-yellow shades. In examples: (3) the pigment dye wherein X is Cl is rubbed into a printing lacquer containing boiled linseed oil, cobalt octoate and lead octoate and the product printed on to coated paper; (4) the pigment dye wherein X is Br is rubbed into a printing ink with copper phthalocyanine, alumina hydrate and a printing varnish and the product used to print coated paper.
Patent GB-499297-A (GB)
Title: Improvements in and relating to tubular conveyer systems
IPC: B65G51/22
Filed: 1938-08-25
Abstract: 499,297. Pneumatic dispatch apparatus. TELEPHON - APPARAT - FABRIK E. ZWIETUSCH & CO., GES. Aug. 25, 1938, No. 25040. Convention date, Oct. 4, 1937. [Class 78 (i)] In apparatus in which the carriers are directed from a tube section into the tube leading to the desired receiving station, or into the adjacent tube section, by a gas-tight switch tube which is pivotally mounted in a switch housing closed to the outer air, movement of the switch tube not only deflects the first carrier and arrests the subsequent carriers, but also switches over the driving gas current. The switch tube 14, Fig. 1, which is pivotal about the axis 15 and controlled by a motor 13, Fig. 2, has a bell-shaped enlargement 16 which surrounds an extension 17 of the travel tube 1. The enlargement 16 is connected by a flexible member 20 to a tube 18 which communicates with the air byepass tube 2. A sleeve 21 mounted on the tube 14 is forced by a spring 22 against the surface 23 to form a seal. When the switch tube is moved to register with one of the branch tubes 8, 9, a shoulder 24 of the enlargement 16 is positioned in front of the mouth of the extension 17 and prevents the emergence of another carrier. When the switch tube is in the position shown in Fig. 1, a carrier within it is arrested by a member 36 at the entrance to the tube 7 leading to the suction side of the blower, and closes a contact vk which switches on the motor 13. The switch tube on coming into register with one of the tubes 7, 9 opens the corresponding contact wk<3> or wk<2> and breaks a circuit so that the magnet KM releases the friction clutch 27, and the motor comes to rest. The passage of a carrier through the tube 8 or 9 causes contacts to be actuated temporarily which switch on the motor to return the switch tube to the position shown in Fig. 1. The direction of movement of the switch tube is controlled by circuits which are completed by contacts controlled by the carrier.
Patent GB-1041716-A (GB)
Title: Automatic frequency and phase control system
IPC: H03L7/12
Filed: 1963-06-24
Abstract: 1,041,716. Automatic frequency control. HITACHI Ltd. June 24, 1963 [June 25, 1962], No. 25057/63. Heading H3A. In a circuit for synchronizing the frequency f2 of an oscillator O to an input frequency f1 in which the input signal is compared with the oscillator signal in a phase comparator D to provide a control voltage which is applied via a low pass filter to a variable reactance circuit R coupled to the oscillator, a second control circuit including a wide band frequency discriminator K and phase compensating circuit P is provided to shift the oscillator frequency into the pull in range of the phase discriminator. The discriminator K is centred at the input signal frequency and provides a positive feedback path which causes the oscillator frequency to sweep through a frequency range determined by the discriminator until phase lock occurs.
Patent GB-350815-A (GB)
Title: Improvements in or relating to piston units for crankless mechanism
IPC: F16H23/10
Filed: 1930-08-22
Abstract: 350,815. Swash-plate linkages. CRANKLESS ENGINES, Ltd. and MICHELL, A. G. M., 499, Little Collins Street, Melbourne, Australia. Aug. 22, 1930, No. 25150. [Class 80 (iii).] The piston units of swashplate engines, especially of the kind described in Specification 118,098, [Class 80 (iii), Linkwork], are made from elongated members 10 of tubular steel stock. The heads are secured or welded to the bodies. The central part is recessed or cut away to receive the swash-plate. Longitudinal cuts X and transverse notches 12 are made, and a portion of the tubular member removed. The remainder is bent back and forms a longitudinal slot 13, Fig. 2. The end portions forming the pistons are closed by discs 15 in which are mounted spherical sockets 18 which carry pads 20 engaging the plate 22. Tail pins 25 on the pads engage the slots 13. In a modification, the middle portion of the tubular member is bent outwardly to form flanges 31, Fig. 6. A forged steel piece is inserted to close the ends of the pistons and engage the flanges, and carries the sockets for the slippers. The flanges 31 form bearings for guide slippers carried by the frame.
Patent GB-1422809-A (GB)
Title: Covered roll for paper making
IPC: F16C13/00
Filed: 1973-05-25
Abstract: 1422809 Covering cores by winding BELOIT CORP 25 May 1973 [19 June 1972] 25174/73 Heading B8G [Also in Division F2] A roller 11 for paper-making machines may be formed by winding a web 19 of needled, non- woven polyester fibres on to a metal core 12 after being impregnated with liquid elastomer in a container 23. After curing the cover 14 is non- porous and ready for machining to render it smooth. The liquid elastomer may be depolymerized natural rubber, styrene, butadiene, urethane or polybutadiene.
Patent GB-953465-A (GB)
Title: Improvements in or relating to one-way engaging devices
Inventor: FERRIS ERNEST ALBERT
IPC: F16D41/067
Filed: 1960-07-19
Abstract: 953,465. Roller clutches and brakes. BORGWARNER CORPORATION. July 19, 1960, No. 25181/60. Headings F2C and F2E. In a one-way jamming roller type clutch or brake the outer cam race 13 is formed as a cupped sheet metal pressing of the axial crosssection shown, and an outer complementary cup-shaped member 17 is force-fitted thereon to enclose the rollers 4 and roller cage, whereby the rollers, cage and race form a single unit for insertion on or removal from the shaft 2. The embodiment according to Figs. 1 and 2 comprises a cage 5 with pairs of bent-up lugs 7 for positioning the rollers 4, and an energizing coil spring 9 of which one end 8 engages a lug 7 and the other end 11 is attached to the race 13. A second embodiment, Figs. 3-6 (not shown), incorporates a reaction plate formed with integral cross-bars engaging individual roller-actuating springs, forming the subject matter of Specification 953,466.
Patent GB-518720-A (GB)
Title: A new or improved arrangement for controlling air to the combustion chamber of furnaces or the like
IPC: F23L11/00
Filed: 1938-08-27
Abstract: 518,720. Liquid and gaseous fuel furnaces &c. PRESTON & THOMAS, Ltd., and PRESTON, J. H. Aug. 27, 1938, No. 25187. [Class 51 (i)] [Also in Group XI] In furnaces and fish-frying ranges the pivoted damper 5 in the outlet flue 4 leading from the combustion chamber is mounted on a spindle 6 connected by members 8, 9, 10 to the spindle 11 of the burner valve so that as the burner valve is opened or closed the damper 5 is simultaneously opened or closed. Specifications 464,003 and 464,228, [both in Group XI], are referred to.
Patent GB-263248-A (GB)
Title: Improvements relating to the production of pattern effects on acetyl silk fabric
IPC: D06Q1/02
Filed: 1925-10-09
Abstract: 263,248. Tootal Broadhurst Lee Co., Ltd., and Foulds, R. P. Oct. 9, 1925. Inkless printing by chemical reaction; stenciling. - Pattern effects are produced on fabrics consisting of or containing cellulose acetate silk, by treating selected areas with organic acids or phenols which are solvents or swelling agents for cellulose acetate, such as lactic acid, acetic acid, mono- or tri-chloracetic acid, butyric acid, phenol, or cresol. The action of the solvent may be controlled by the addition of an inert diluent. In examples a mixture of lactic acid and feculose is printed on the fabric, and the latter washed after standing for a short time or after passage through a heated chamber or over heated surfaces; or lactic acid may be sprayed on to the fabric through a stencil.
Patent GB-511653-A (GB)
Title: Improvements in or relating to double break contacts for electrical contactors or switch gear
IPC: H01H1/20
Filed: 1938-09-01
Abstract: 511,653. Switch contacts. PRENTICE, H. B., and FIELDING, J. G. Sept. 1, 1938, No. 25555. [Class 38 (v)] Switch contacts comprise a pair of plates 1 which are connected by a flexible conductor 4 and have pivotal engagement with recesses 2 of an insulating carrier 3. A bowed spring 7 biasses the contacts downwards and is held in position by engaging a projection 8 on a cover part 5 of carrier 3. This construction permits the easy removal of the contacts from the carrier after removing the spring 7. The fixed contacts 9 comprise bent plates having slotted ends for engagement with fixing bolts 10 thus allowing easy removal after slackening the nuts. When the carrier 3 moves downwards the tips of the contacts 1 engage the tips of contacts 9. Further movement causes contacts 1 to roll on contacts 9 so that the final point of engagement is near the bend of contacts 9. This means that the loadcarrying part of both contacts is not used for making or breaking the .circuit and so is not damaged by sparking.
Patent GB-296990-A (GB)
Title: Improvements in secondary electric cells
IPC: H01M10/20
Filed: 1928-09-06
Abstract: 296,990. Sismanopol, A., (trading as Forta Intreprinderi Electro-Mecanice), (Assignee of Radulescu, E. M.). Sept. 10, 1927, [Convention date]. No Patent granted (Sealing fee not paid). Electrodes.-The negative electrode of a storage battery consists of lead coated with electrolytically deposited copper, its area being less than one half of the area of the positive electrode which consists of lead peroxide. The lower end of the negative electrode rests on the bottom of the container, the lower end of the positive electrode being supported above the same.
Patent GB-1043694-A (GB)
Title: Spark ignition systems
Inventor: ADAMS DEREK STANLEY
IPC: F02P3/08
Filed: 1962-07-04
Abstract: 1,043,694. Ignition systems. JOSEPH LUCAS (INDUSTRIES) Ltd. June 13, 1963 [July 4, 1962], No. 25598/62. Heading F1B. A gate controlled switch 14 controls current flow in the winding 15 and a switching transformer 25 is provided to successively turn the gate controlled switch on and off by applying positive and negative pulses to its gate. The engine driven interrupter 28 could be replaced by a semi-conductor switch controlled by magnetic or other means. In Fig. 3 when the gate receives a negative pulse energy stored in the inductor 34 changes the capacitor 35. When a positive pulse is applied to the gate the switch 14 conducts and the capacitor discharges through the winding 15. In Fig. 4 the capacitor 35 and winding 15 form an oscillatory circuit when the capacitor 35 discharges. The circuit could be used with low tension surface discharge plugs in which case the voltage developed across the primary winding of the ignition transformer is applied directly to the plugs in turn a separate ignition transformer may be used for each plug Other modifications are described.