baber/WOPTO huggingface dataset:
Patent GB-928805-A (GB)
Title: Steroid compounds
IPC: C07J75/00
Filed: 1959-09-01
Abstract: The invention comprises 16b -methyl-11b , 17a ,21-trihydroxy-20-ketalised steroids of the pregnane series having attached to C3 a ketal or protected keto group having an unsaturated nuclear carbon to nitrogen linkage and having no double bonds in the A ring and the 5(6)-position, or having a double bond in the 4(5) or 5(6) position with or without a 1(2) double bond, and the preparation thereof by reducing a saturated or appropriately unsaturated 16b -methyl-17a ,21-dihydroxy- 20-ketalised- 11-keto-steroid having attached to the carbon atom in the 3-position a ketal substituent or a protected ketal substituent containing an unsaturated nuclear carbon to nitrogen linkage with an alkali metal aluminium hydride or an alkali metal borohydride to form the corresponding 16b -methyl-11b ,17a , 21-trihydroxy- 20-ketalised steroid having at the 3-position the group previously defined and, if desired, treating the resulting steroid with a solution of an acid to form 16b -methyl-11b ,17a ,21-trihydroxy-3.20-diketo-pregnane, -4-pregnene or -1,4-pregnadiene. The C3 ketal group may be an alkylenedioxy group such as an ethylenedioxy group, or the C3-protected keto group having an unsaturated nuclear carbon to nitrogen linkage may be a semicarbazido, a hydrazino, or oximino group.  Protecting a 3-keto group as a ketal group means that a double bond present in the 4(5)-position of the unprotected compound moves to the 5(6)position in the compound having the 3-ketal group.  The 20-ketalised group in the above reactants may be a 20-alkylenedioxy group or may be in the form of a 17,20;20,21-bismethylenedioxy group.  16b -Methyl- 17,20;20,21-bismethylenedioxy-3-semicarbazido11-keto pregnane- 4-pregnene, and -1,4-pregnadiene are prepared by reacting the required 16b -methyl-17a ,21-di-hydroxy-3,20-diketo-steroid with formaldehyde in the presence of an acid to form 17-20; 20-21-bismethylenedioxy- 16b -methyl-3, 11-diketopregnane- 4-pregnene, and 1,4-pregnadiene, and treating these compounds with semicarbazide.  16b -Methyl- 17a ,21-dihydroxy-3, 20-bisethylenedioxy-11-keto-pregnane and -5-pregnene are prepared by reacting 16b -methyl-3,11,20-triketo-17a ,21-dihydroxy-pregnane and -4-pregnene respectively with ethylene glycol.  16b -Methyl- 17,20;20, 21-bismethylenedioxy-3-ethylenedioxy-11-keto-pregnane and -5-pregnene are prepared by reacting 16b -methyl- 17,20;20,21- bismethylenedioxy-3,11-diketo-pregnane and -4-pregnene respectively with ethylene glycol.  Specification 906,443 is referred to.
Patent GB-1264064-A (GB)
Title: Improvements in starter drives for internal combustion engines
IPC: H02K7/10
Filed: 1970-06-19
Abstract: 1,264,064. Starter drives. ROBERT BOSCH G.m.b.H. June 19, 1970 [June 21, 1969], No.29816/70. Heading F1K. The invention relates to a starter drive for internal-combustion engines having a starting pinion 13 displaceably and rotatably mounted on the armature shaft 10 of the starter motor and meshing by way of a ratchet gear 22, 23 acting as an overrunning clutch with a clutch member 19 which is also loosely mounted on the armature shaft and which is connected to a driver 16 so as to be non-rotatable relatively thereto but axially displaceable against the force of a spring 26, the driver comprises an annular body which overlaps the clutch member and a guide sleeve 17 which has an internal coarse-pitch screw thread and which is connected to the annular body so as to be non-rotatable relatively thereto, the guide sleeve being mounted on a corresponding screw threaded portion 14 of the armature shaft and being acted upon by shift means 31 which become effective during the starting operation. According to the invention the annular body of the driver is provided with at least one longitudinal slot 18 into which an extension 20 on the periphery of the clutch member engages with the clearance required for satisfactory movement in the axial direction and at least one damping element 27 is arranged between an axial shoulder on the driver and the clutch member and abuts against the shoulder and the clutch member with resilient deformation during the starting operation.
Patent GB-520198-A (GB)
Title: The extraction of phenols from aqueous solution
IPC: C07C37/72
Filed: 1938-10-14
Abstract: 520,198. Extraction of phenols. I.G. FARBENINDUSTRIE AKT.-GES. Oct. 14, 1938, No. 29848. Convention date, Oct. 14, 1937. [Class 2 (iii)] Phenols are extracted from aqueous solution thereof by a liquid ester of carboxylic acids the boiling point of which is sufficiently below the boiling point of the phenols to permit separation of the esters from the phenols by distillation. The aqueous phenolic solution may result from carbonization of coal, hydrogenation, or the preparation of phenols from halogen benzenes or benzene sulphonic acids. Suitable esters are ethyl and butyl acetate. Any ester left in the water after extraction may be recovered by steam distillation, or by active carbon or by salting out. The ester may be employed in admixture with a solvent miscible therewith but insoluble in water, e.g. benzene or toluene. Continuous extraction may be performed by causing the phenolic liquors to enter a tower at the top and the esters at the bottom.
Patent GB-334413-A (GB)
Title: Improvements relating to the delivery of slivers from textile machines into cans
IPC: B65H67/04
Filed: 1929-10-02
Abstract: 334,413. Mackie & Sons, Ltd., J., and Mackie, J. P. Oct. 2, 1929. Coilers.-In a textile machine in which slivers are delivered into cans mounted on a carriage 10 reciprocated on rails 14, Figs. 1 and 2, the candoffing and changing mechanism comprises a carriage 10 which accommodates two cans 12 side-by-side and means for automatically moving both cans when one is full across the carriage in a direction transverse to the direction of its reciprocations to remove the full can from the carriage and replace it by the empty can. The cans are moved by a pusher-bar 20 adapted to engage the empty can and connected to toggle links 24 which are straightened to move the cans across the carriage. The pusher-bar 20 is guided on rods 22 and the middle joints of the toggle links 24 are linked together and connected to a rod 26 which is provided with a collar 30 and slides in a swivelling block 28. The carriage 10 is reciprocated by a crank 16 and connecting-rod 18 and during filling of the outer can the toggle 24 and associated parts are as shown in Fig. 2. A detent arm 32 is fixed on a shaft 34 and is normally clear of the collar 30. A lever 40 having a tooth 42 engages a cam 44 and after a predetermined time the tooth 42 engages a notch 46 in the cam 44, the lever 40 is thereby lowered and through a link 38 and crank 36 turns the shaft 34 to bring the arm 32 into the path of the collar 30. On the next reciprocation of the carriage the rod 26 is held by the arm 32 and the toggles 24 are therefore straightened as shown in Fig. 3, the full can being pushed off the carriage and the empty can substituted therefore. Continued rotation of the cam 44 lifts the arm 32. In a modification the bar 20 may be provided with a cam surface and be adapted to be moved thereby. Alternatively a stationary cam may be moved into the path of a projection on the pusher-bar. Specification 311,564 is referred to.
Patent GB-866495-A (GB)
Title: Improvements in and relating to the production of trim panels
IPC: B29C65/04
Filed: 1957-09-24
Abstract: 866,495. Laminates. VOLKSWAGENWERK G.m.b.H. Sept. 24, 1957 [Sept. 25, 1956], No. 29895/57. Class 140. [Also in Group X] Trim panels, e.g. for covering the interior of motor car bodies, are produced by a method in which a backing-plate of relatively stiff sheeting is covered with flexible thermoplastic polymeric sheeting, the two layers being secured together by high-frequency dielectric welding. The backing-plate may be of hard fibre sheeting, plywood, thick cardboard, polyurethane or polystyrene. When this is a material which is not heat-weldable (e.g. the first three listed above), welding is made possible by applying to the backing-plate, only at places where it is desired to carry out welding, of a coating of thermoplastic polymeric material, e.g. P.V.C., dissolved in a solvent. A padding layer of foamed synthetic resin may be interposed between and welded to the backing-plate and cover-sheet. As shown in Fig. 1, the backing- plate 1, of hardboard, wood or cardboard, is coated at 14 with dissolved thermoplastic polymeric material. It is then covered with a foamed polyurethane sheet 2, and a polyvinyl chloride sheet 3, both cut somewhat larger than the plate 1, and the whole then welded together in a high-frequency welding press, using the electrodes 5. As shown in Fig. 4, the assembly is then inverted in a jig 6, and the overlap 7 of layers 2 and 3 is folded back over the edge of the plate 1, and welded in place by electrode 9. Damage to the front of the panel is avoided by a metal foil or coating 10, on the front face of the backing-plate, to act as one plate of a condenser, the other plate of which is the electrode 9. The holding-down device 8 may also serve to cut off surplus portions of the overlap 7. The layers 2 and 3 may be secured to one another by adhesive before they are welded to the backing. The layer 3 may comprise two or more parts of different colours or patterns, the lines along which these parts meet being also the lines along which they are welded to the backing. A decorative thermoplastic piping or beading may be welded over the folded -over edges in the same operation in which they are welded to the back of the backing-plate, so that the edges of the piping or beading project round the edges of the trim panel and give a decorative effect.
Patent GB-299310-A (GB)
Title: Improvements in connections for electron discharge tubes
IPC: H03B19/10
Filed: 1928-10-18
Abstract: 299,310. Levy, L. Oct. 22, 1927, [Convention date]. Addition to 291,354, [Class 39 (i), Electric lamps, Arc &c.]. Frequency, changing. - Comprises circuit arrangements for the thermionic valve described in the parent Specification, designed for rectification and frequency doubling. The control electrode of the valve is placed rear the filament and on the opposite side of the filament to the grid and anode. Fig. 4 shows the valve arranged as a detector and/or frequency-doubler. For this purpose, the voltages are adjusted so as to utilize the crest of the curve. The input is applied at 30 in the control electrode, circuit, and the anode circuit includes a telephone or other device 31 for utilizing the rectified output, and/or a circuit 32 tuned to the double frequency.
Patent GB-300783-A (GB)
Title: Improvements in and relating to kerb overflows for street gullies
IPC: E03F5/046
Filed: 1927-11-10
Abstract: 300,783. Major, J., and Rogers, S. S. Nov. 10, 1927. Kerbs; gratings.-A kerb overflow fitting A for permitting flow of water over the kerb side of a street gully has its vertical back curved towards the front to avoid corners. The top and bottom of the back may also be similarly curved, as shown in Fig. 4. The kerb plate B may be integral with or separate from the fitting A.
Patent GB-188946-A (GB)
Title: Improvements relating to vibratory massage appliances
IPC: A61H23/00
Filed: 1921-11-11
Abstract: 188,946. Hillman, J. C. Nov. 11, 1921. Massage and vibratory treatment. - Relates to vibrators of the type in which a spring- controlled spindle o carrying the applicator c is reciprocated by a cam i connected by gearing e, g to a crankhandle f. According to the invention, all the mechanism is mounted in a rectangular frame p made from a single strip of metal.
Patent GB-648094-A (GB)
Title: Improvements relating to collapsible portable beds
IPC: A47C17/66
Filed: 1948-11-19
Abstract: 648,094. Bedsteads. FRASER, J. A., CRIGHTON, P. F., HOKANSON, A. E., and WELLS, E. G. Nov. 19, 1948, No. 30192. [Class 52 (ii)] In a portable collapsable bed as described in Specification 571,746 the canvas &c. supporting surface is provided with foldable marginal extensions so that the canvas when detached from the framework may be hung as a hammock from two fixed points of support. As shown the canvas &c. which consists of a centre portion 1 with two side portions 3, 4 for securement to the framework has the portion 1 provided with flaps 7 which are unfolded for use as a hammock. The canvas is provided at its ends with eyelets 16 and at its side edges with eyelets 19. Pockets may be provided for housing the sling when out of use. Specifications 648,092 and 648,093 also are referred to.
Patent GB-395218-A (GB)
Title: Improvements in or relating to metal milk cans and analogous metal receptacles for liquids
IPC: B65D43/16
Filed: 1932-10-28
Abstract: 395,218. Milk cans &c. SMITH, W. J., 1, Wesley Street, Chorlton-on-Medlock, Manchester. Oct. 28, 1932, No. 30230. [Class 66.] The loops 10 for the attachment of the bail handle 15 are formed by wires the ends 11 of which are secured in a swage 4 formed in the metal layer afforded by the turned-over end portion of the can, a separate strengthening strip being incorporated in the fold if desired. The ends 12, 13 of the fixed handle 14 are also secured in the swage, the upper surface of which affords a seating for the flange 21 of the lid, the hinge sleeve 17 of which turns about a pin 16 having the ends soldered to the upper side branches of the handle 14. The lower edge of the can is strengthened by a brass collar 25.
Patent GB-188343-A (GB)
Title: Cooling off process for annealing metals without damaging the finished surface
IPC: C22F1/00
Filed: 1922-11-06
Abstract: 188,343. Hartmann, J. Nov. 5, 1921, [Convention date]. Annealing.- In order to prevent oxidation of the surface of metals undergoing annealing, a non-oxidizing non-combustible non - injurious protecting gas such as nitrogen or carbon dioxide is introduced into the annealing box during the cooling operation to prevent the entry of air. As shown, the annealing box T is provided with an inlet pipe R which, when the box is placed in the cooling pit, is connected by a pipe M to a pipe G through which the protecting gas is supplied preferably under pressure. A loose cover H is provided over the box connected to a suction pipe S whereby any gases escaping from the box are withdrawn.
Patent GB-248860-A (GB)
Title: Improvements in point and signal interlocking devices for railways
IPC: B61L11/04
Filed: 1924-12-17
Abstract: 248,860. somersgale, C. W., and Pennock, H. L. Dec. 17, 1924. Signals and points, interlocking.-In a device of the kind having a manually-operated switchlocking bolt and safety locking means co-operating therewith to prevent the signal from being moved to safety unless the points are home and locked, the manually operated bolt c, adapted to engage and lock a stretcher bar f or other suitable part of the switch has a projection c<2> co-operating with a loose tappet d to lock the signal-rod b in danger position when the bolt is withdrawn to free the points, and to prevent withdrawal of the bolt when the rod b (and corresponding signal) are in safety position. A key-operated lock is also provided, comprising a disc h housed in a recess and pivoted to a cover plate g. The disc has projections i, i<1> which engage recesses in the bolt to hold it in the point-locking position. The disc is retained in this position by wards, not shown. To unlock the points, the key is inserted and used to raise the wards, freeing the disc, and is then used to rotate the disc and free the bolt c. In the latter movement, the bit of the key passes behind the cover plate, so that the key cannot be withdrawn until the bolt is returned to pointlocking position and the disc operated to lock the bolt. The device is made in three superposed parts a, a<2>, e held together by bolts e' and nuts e<3>, the latter being inaccessible when the whole device is secured to a sleeper &c. by bolts a'.
Patent GB-504573-A (GB)
Title: A device for use in wireless receiving apparatus
IPC: H01Q1/24
Filed: 1937-11-05
Abstract: 504,573. Condensers. GARDNER, B. Nov: 5, 1937, No. 30402. [Class 37] [Also in Group XL] A device for inserting in the aerial or loudspeaker leads or other suitable points of a wireless receiver for improving the tone, comprises an assemblage of metal containers and comb-like metallic strips. The box j and cover k contain a number of metallic combs mounted on an insulated bolt b. Another nut and bolt ba, c is provided in the corner of the box in order to make an external connection or to connect the box mechanically to an adjacent box. The complete box may be enclosed inside a screening box from which it is insulated by the strip of insulating material d. A number of the boxes may be arranged in series in a line, corner to corner, Fig. 4 (not shown), or a number may be arranged in series inside one another, only the inner one containing combs, Fig. 5 (not shown).
Patent GB-934811-A (GB)
Title: Process for obtaining dry, finely divided and flowable polyethylene powders
IPC: C08J3/14
Filed: 1959-09-08
Abstract: Dry, finely divided and flowable polyethylene powders are made by dissolving polyethylene at elevated temperatures in a mixture of a solvent and a non-solvent therefore, the non-solvent having a higher boiling point than the solvent and being miscible therewith, at least in the proportions in which it is used, distilling of the solvent and non-solvent and at the same time continuously breaking up and circulating the liquid-containing solid polyethylene mass which forms.  Solvents specified are carbon tetrachloride, trichloroethylene, perchloroethylene, benzene, toluene and xylene. Non-solvents specified are butanol, the methyl, ethyl, propyl and butyl half-ethers of glycol, methyl isobutyl ketone, dibutyl ether and aliphatic paraffin hydrocarbons.  The process may be applied to mixtures of polyethylene with other polymers, e.g. polyisobutylene, polybutadiene, polyisoprene, butadiene-acrylonitrile copolymers, natural rubber and chlorinated rubber.  In addition, mixtures of polyethylenes of differing molecular weights may be jointly processed.  The polyethylene and the added polymer may be mixed either before or after being dissolved in the mixture of solvent and non-solvent.
Patent GB-278213-A (GB)
Title: Improvements in safety control mechanism for liquid fuel burners
IPC: F23N5/24
Filed: 1926-12-03
Abstract: 278,213. Marks, E. C. R., (Williams Oil- O-Matic Heating Corporation). Dec. 3, 1026. Liquid-fuel supply; electrically controlling fuel and. air supplies.-In a liquid fuel burning apparatus comprising electrically driven means for projecting a mixture of air and atomized fuel into an ignition zone, a device operated by the heat of the flame opens a valve 26 in the main fuel supply pipe 25 to allow the passage of fuel into a reservoir 37 supplying the fuel atomizer, and a float 40 arranged in the reservoir 37 operates a knife switch 43 to break the circuit to the electric motor 10 driving the fuel atomizer when, owing to non-ignition or cessation of ignition, the valve 26 remains or becomes closed and the fuel level in the chamber 37 falls. The device for operating the valve 26 may consist of a thermally operated switch arranged in the stack and making or breaking the circuit to a solenoid having its core connected to a crank 27 on the valve. Alternatively, an expansible rod 48 arranged in the stack is connected to the crank 27 by a wire 47. In addition to the knife switch 43 a relay switch controlled by the house thermostat is included in the circuit of the motor 10. A suitable fuel atomizer comprises a rotor 15 carrying slidable vanes 16 and eccentrically mounted in a casing 17. The rotor 15 is driven by the motor 10 so as to draw air through an intake 20 and fuel from the reservoir 37 through pipes 18, 19 into the casing 17 and to discharge the atomized fuel and air mixture through a pipe 21 to a nozzle 22. The mixture is ignited at the nozzle at a spark gap 23. The motor also drives a fan 11 supplying additional air to the flame through a housing 12.
Patent GB-763457-A (GB)
Title: Improvements in or relating to the application of protective coatings to the surfaces of metals
IPC: B05D3/12
Filed: 1953-11-05
Abstract: A method of coating the surfaces of metals and other materials with a protective layer of a substance which comprises applying the substance in a liquid state either reducing the gas pressure at the time of coating or afterwards and then allowing the coating substance to dry or set under normal pressure.  Containers and apparatus are coated with varnishes, synthetic resin or the like in liquid or liquified state by this method.  The coating may then be subject to heat treatment.  The treatment is carried out in a hermetically sealed chamber.  If the inner surface of a closed container is to be coated the pressure inside the container is reduced.
Patent GB-446283-A (GB)
Title: Improvements in electric starting systems for internal combustion engines
Filed: 1934-10-26
Abstract: 446,283. Starting prime movers. ECLIPSE MACHINE CO., Elmira, New York, U.S.A. Oct. 26, 1934, No. 30756. Convention date, Oct. 27, 1933. [Class 38 (iv)] Relates to an automatic electric starting system for an internal-combustion engine and consists in the provision of means energized by the battery and generator in opposition which in the event of failure, de-energizes the starting system in a predetermined time. The circuit of the solenoid of the starter motor switch 5, controlled by a manual switch 11 includes contacts 39 on a bi-metallic strip having a heater 45 connected across the battery 1 and generator G in series opposition through contacts 46, so that if the engine fails to start in a given time the circuit of the switch 5 is opened and maintained open since the contacts 46 close prior to the contacts 39. Under normal operation of the engine the E.M.F. of the generator G reduces the heating current to a negligible value. In a modification the solenoid circuit includes a resistance which is shorted when the engine is not running by a device responsive to vacuum in the induction pipe. This resistance limits the current to a value which is sufficient to hold but insufficient to cause operation of the starter switch. The above arrangements also prevent the starter motor circuit from being energized in the event of generator failure or by a voltage surge produced in field when current is broken.
Patent GB-476837-A (GB)
Title: Improvements in poultry feeders
IPC: A01K39/014
Filed: 1936-11-11
Abstract: 476,837. Feeding - appliances for poultry. HEDRICK, C. E. Nov. 11, 1936, No. 30763. [Class 5 (ii)] A collapsable poultry feeder comprises a pasteboard or like blank, Fig. 4, that is bent into a box-like structure, Fig. 2, having sloping portions 3 provided with holes 6 through which poultry has access to the food. The feeder is opened by rocking the parts 3 outwardly, and is secured in the closed position shown by spring clips engaging the marginal portions 4.