baber/WOPTO huggingface dataset:
Patent GB-826621-A (GB)
Title: Separation of grignard reagents from cyclic ethers
IPC: C07F3/02
Filed: 1957-09-11
Abstract: Complexes of organomagnesium chlorides with cyclic ethers such as are described in Specifications 776,993, 777,158 and 779,100 are separated into their components by treatment with an ethylene polyether of formula R3O (CH2CH2O)xR4, wherein x is an integer from 1 to 8, R3 and R4 are the same or different and represent substituted or unsubstituted hydrocarbon groups, the permissible substituents being groups which do not react with the reactants or reaction products under the conditions of the separation procedure.  The organo-magnesium chloride is of formula R2(MgCl)y wherein y is a small whole number and R2 is a substituted or unsubstituted alkyl, alkenyl, aryl, aralkyl, aralkenyl or heterocyclic radical, and when y is greater than 1, R2 is the corresponding polyvalent radical whose valency is equal to y.  It may be complexed with tetrahydrofuran, tetrahydropyran, 2-methyltetrahydrofuran, 2 - ethoxytetrahydropyran, tetrahydrofurfuryl ethyl ether, dihydropyran and Nmethyl morpholine. The groups R3 and R4 in the cyclic ether are preferably C2-C5 aliphatic hydrocarbon radicals; phenyl groups or substituted phenyl groups having not more than 5 atoms in each substituting group (and not more than 3 substituting groups), or aralkyl groups which have no more than 4 carbon atoms in the alkyl group, the aryl being phenyl. Specified polyethers are diethylene glycol diethyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and tetraethylene glycol dimethyl ether.  In an example diethylene glycol diethyl ether is added to a solution of a complex of vinyl magnesium chloride-tetrahydrofuran in tetrahydrofuran.  The tetrahydrofuran is distilled off under reduced pressure.  The resulting solution may be used for the synthesis of other compounds such as, for instance, trimethyl vinyl silane (see Group IV (a)).  Specifications 802,517 and 826,620 also are referred to.ALSO:Organosilanes are prepared by reacting a halosilicon compound with an organomagnesium chloride in solution in an ethylene polyether of formula R3O(CH2CH2O)xR4 wherein x is 1-8, and R3 and R4 are the same or different and represent substituted or unsubstituted hydrocarbon groups.  In Example 1, vinyl magnesium chloride in diethylene glycol ether (which has displaced the tetrahydrofuran used in the preparation of the complex) is reacted with trimethylchlorosilane to give trimethylvinylsilane.  Specifications 776,993, [Group IV (b)], 777,158, [Group II], 779,100, [Group IV (b)], 802,517 and 826,620 are referred to.
Patent GB-785371-A (GB)
Title: Improvements in and relating to breathing apparatus and pressure control valves therefor
Inventor: FITT PETER WILLIAM
IPC: A62B9/02
Filed: 1954-10-06
Abstract: 785,371. Respiratory appliances. NORMALAIR, Ltd. Sept. 29, 1955 [Oct. 6, 1954], No. 28761/54. Class 81 (2). In a pressure control valve for breathing apparatus the main control valve is operated by a smaller servo valve operated by the breathing action of the wearer. Breathable gas is inhaled from the chamber C through the aperture 19 and the pressure reduction in C causes diaphragm 2 to collapse inwards. Lever 10 is rotated clockwise round pivot 9, servo valve 7 is opened and breathable gas enters from 4 through passage 16 to the chamber E. The main valve, 13, is then operated by the action of diaphragm 3 and lever 17 and admits gas from pipe 11 to the mask via the passage G.
Patent GB-241411-A (GB)
Title: Improvements relating to gramophone needle containers
IPC: G11B3/54
Filed: 1924-12-02
Abstract: 241,411. British Needle Co., Ltd., and Keesey, E. W. Dec. 2, 1924. Partitioned boxes; contents, facilitating access to.-A box a for gramophone needles is made of cardboard or the like and is divided by partitions c into a number of compartments, one compartment d being partly covered to leave an aperture through which spent needles can be inserted whilst the other compartments, intended for unused needles, are each provided with a paper base e which is attached at its end to an opposite pair of the upper edges of the compartment and is bent to a curved form for facilitating withdrawal of the needles. A top piece f partly covers the rear ends of the compartments. Specification 20902/07 is referred to.
Patent GB-602834-A (GB)
Title: Method for reinforcing the ends of hollow articles of reinforced concrete
IPC: F16L25/00
Filed: 1945-10-31
Abstract: 602,834. Reinforced concrete pipes. SOC. CONTINENTALE ET COLONIALE DE CONSTRUCTION SOC. ANON. Oct. 31, 1945, No. 28915. Convention date, March 1, 1943. [Class 99 (ii)] [Also in Group X] Pipes 1, 3 made of reinforced concrete and having hooped or helical tensioned reinforcing wire 8, 9, are provided with longitudinal reinforcement to resist. the tensions set up by the wire in the end zone of each pipe. The reinforcement may be in the form of metal bars 13 traversing the zone and anchored in. the material of the pipe 3 at 14, the bars being placed under tension by tightening the nuts 15 against the mass of the pipe ; a complete or segmented anchoring ring may be used instead of the individual members 14. U-shaped bars 18, as used for pipe 1, do not require anchoring members, the base 19 of the U serving the same purpose. The longitudinal reinforcement mentioned above is for the end zones only and is distinct from the usual type of expanded metal reinforcement 6, 7.
Patent GB-748466-A (GB)
Title: Improvements relating to vehicles comprising an auxiliary frame or bearer adapted for the suspension of a pair of road wheels
IPC: B60K5/12
Filed: 1953-10-20
Abstract: 748,466. Spring suspensions; resilient mountings. DAIMLER-BENZ AKT.-GES. Oct. 20, 1953 [Oct. 20, 1952; Oct. 20, 1952], No. 28956/53. Classes 108 (2) and 108 (3). [Also in Group XXXI] In a vehicle comprising an auxiliary frame or bearer on which are suspended a pair of steerable road wheels sprung against the frame or bearer, the latter is partly supported on the vehicle frame by vertically adjustable supporting means in such a manner that the frame or bearer is angularly adjustable about a transverse axis which is so disposed in relation to the road wheel centres that a vertical adjustment of the supporting means is effective for altering the negative or positive castor angle setting of the wheels. As shown, an auxiliary frame 12 is attached to a main frame 10 by resilient mountings 13, 14 and 15 and carries upper and lower wheel suspension links 17, 18 sprung by coil springs 19. The mounting 13 comprises a pin 25 which passes through the frame 12 and through a main frame bearer 11 and is clamped thereto with the intermediary of elements 26 and 27. Rubber rings 32 and 33 are disposed on either side of the frame 12, the ring 32 being precompressed between walls 39 and 40 formed by a depression on the frame 12 and a cup member. Adjustment of nuts 37, 38 on the pin 25 effects variation of the spacing of that end of frame 12 relative to the bearer 11 and hence the castor angle of road wheels 16. The mountings 14, 15 are of similar construction but do not permit of any vertical adjustment of that end of the frame 12. A propulsion unit 22 is resiliently mounted at one end on the frame 12 and at the other end on the frame members 10.
Patent GB-1100861-A (GB)
Title: Improvements in or relating to reciprocating pump type dispensers
IPC: B05B11/00
Filed: 1965-07-08
Abstract: 1,100,861. Dispensing liquids by gaseous pressure; reciprocating pumps. P. MESHBERG. July 8, 1965 [July 15, 1964], No.29059/65. Headings F1A and F1R. A pump mounted on a container 10 holding material under low gas pressure, comprises a piston 21 slidably mounted between abutments 30, 31 on a manually reciprocable operating stem 38, such that, on the downward stroke, discharge passage 27a is connected to pump chamber 11 for discharging its contents via nozzle 29, and on the upward stroke passage 27a is cut off from chamber 11, as shown, and material from the container enters the chamber via stem groove 26, which is closed by seal 25 during the downward stroke. Buttons 28 having stem-receiving recesses of different depths, may be used to obtain different strokes. A sleeve may be provided on button 28 having an aperture alignable with button passage 29, the sleeve being spring- loaded to a position closing passage 29 to prevent leakage, Fig. 4 (not shown).
Patent GB-535714-A (GB)
Title: Improvements in or relating to boxes or containers for holding and dispensing blade-like articles, such as razor blades
IPC: B65D83/10
Filed: 1939-10-31
Abstract: 535,714. Containers for razor blades &c. ROBERTS, J. G. Oct. 31, 1939, No. 29071. [Class 18] A dispensing container for razor blades &c. consists of a moulded lower part, Fig. 2, and a moulded upper part shown inverted in Fig. 3, with interfitting parts 9, 10 which are cemented together after the insertion of a stack of blades, Fig. 4. The container then has a slot 17 in one side connecting with slots in the ends which are bevelled at 15 to expose the ends of the uppermost blade which can be engaged by the fingers and withdrawn laterally through the slot 17. The stack of blades has projecting ends 22 which are surrounded by slotted plates 24 having slits 25 which will allow only one blade at a time to be withdrawn. The stack of blades is pressed upwards by a blade spring, or as shown in Fig. 16 by two wire springs 116. In this Figure the upper and lower parts of the container are shown with interfitting parts different from the parts 9, 10 and with a bent wire gate in place of the straps 24. The part 123 of this gate passes through the centre hole of the stack of blades and its upper end is just below the plane of the parts 119, 120 so that only one blade at a time can be withdrawn.
Patent GB-832071-A (GB)
Title: Improvements in or relating to guard railings
Inventor: GREEN CECIL ERNEST
IPC: E04H17/16
Filed: 1956-09-24
Abstract: 832,071. Fencing. ACROW (ENGINEERS) Ltd. Sept. 2, 1957 [Sept. 24, 1956], No. 29130/56. Class 45. In a fencing comprising posts 2, rails 1, and wire mesh screens 4, the screens have lugs 6 which interlock with the rails. The lugs which are U-shaped are welded to the frames 5 of the screens and engage on either side of a rail. The vertical edges of the frames have lugs 7 which engage the posts. The joints 3 between posts and rails are according to Specification 768,890.
Patent GB-1078801-A (GB)
Title: Improvements in means for controlling the operation of liquid fuel burners
Inventor: CUTTS WILLIAM JOHN
IPC: F23N5/22
Filed: 1964-07-17
Abstract: 1,078,801. Controlling burners. BRITISH THERMOSTAT CO. Ltd. July 16, 1965 [July 17, 1964], No. 29342/64. Heading F4T. An electric control circuit for a liquid fuel burner in which the fuel is atomized by centrifugal action on a nozzle rotated by a fan motor FM comprises cam-operated contacts S1 . . . 85 driven by a timing motor TM, contacts RL1 . . . RL4 actuated by a relay RL and a rectifier D which is used to brake and stop the fan motor FM when the fuel supply is shut off by a solenoid valve OS, thus preventing the fuel from dribbling from the nozzle. In operation when a time switch TS closes, a heater RH for preheating the fuel and a thermal delay heater TDH are energized. The fuel heater RH is controlled by a hearth thermostat HT. After a time delay the switch TD closes to energize the relay RL and the contacts RL1 . . . RL4 change from the position shown and the timing motor TM is therefore energized. After ten seconds the contacts S1 and S2 are moved from the positions shown. The contact S1 opens and causes the relay RL to be under the control of the holding contact RL2 and a reset switch RT. The contact S2 energizes an ignition device I.G.N. After a further five seconds contacts S3, S4, S5 move from the positions shown. Contact S3 shortcircuits a contact FW controlled by a flame sensing device. Contact S4 opens the solenoid fuel valve OS and contact S5 energizes the fan motor FM. After a further 95 seconds contact S2 opens to de-energize the ignition device I.G.N. Ten seconds later contact S3 opens to put the system under the control of the flame contact FW. If the fuel has ignited the flame contact FW is open and consequently the timing motor is stopped. This is the burner operating condition. When the boiler temperature reaches a predetermined value a thermostat contact BT opens and de-energizes the relay RL. The timing motor TM is therefore re-started, the solenoid fuel valve is closed and the contact RL4 energizes the fan motor FM through the rectifier D causing braking and stopping. After ten seconds, contacts S4 and S5 are changed back to the positions shown. The timing motor continues to run until the contact 81 changes back to the position shown.
Patent GB-343969-A (GB)
Title: Improvements in or relating to checker-work for heat exchangers in furnaces
IPC: F23M20/00
Filed: 1929-09-27
Abstract: 343,969. Bricks for regenerators. LOFTUS, F. H., 730, Franklin Avenue, Aliquippa, and KURTZ, T. N., 120, Ruskin Avenue, Pittsburg, both in Pennsylvania, U.S.A. Sept. 27, 1929, No. 29353. Convention date, Jan. 31. [Class 87 (i).] In chequer-work for heat exchangers in furnaces, the tiles 14 are provided at each end with a relatively deep recess 17 forming a seating for cross-blocks 15, and a shallow base-recess 21 to receive the top of the cross-block. The recesses 17 are deeper than one-half the height of the tile, and the recess is less than one-half the depth of the recesses 17. Spaced vertical walls are built up of the tiles 14, supporting the cross-blocks in staggered formation.
Patent GB-1130788-A (GB)
Title: Improvements in turbine overspeed trip anticipator
IPC: F01D17/26
Filed: 1966-06-30
Abstract: 1,130,788. Steam turbine plant; engine stopgear. GENERAL ELECTRIC CO. June 30, 1966 [July 1, 1965], No.29370/66. Headings F1K and F1T. [Also in Division G3] In a steam turbine plant comprising a speed governor 12 controlling a set of control valves 3, and an emergency overspeed trip 15 for closing a stop valve 2, means are provided for closing the stop-valve 2 at a trip-anticipator speed which is above the normal speed but below the speed setting of the overspeed trip. If the speed thereafter falls below the trip-anticipator speed without having first exceeded the overspeed trip setting, the stop-valve 2 is re-opened. Since the stop-valve 2 is closed in anticipation of the operation of the overspeed trip, the peak speed attained after any such operation is less than it would otherwise have been. The speed governor 12 operates the control valves 3 through a servomotor 20 and a relay 13. The servomotor 20 comprises a pilot valve 21 controlling a servopiston 27, the fulcrum 24 of the follow-up lever 23 being adjustable to set the desired load corresponding to the normal speed. The overspeed trip 15, shown as an offcentre bolt device, is arranged to actuate a pivotable trip finger 30 to release a spring-loaded dump valve 32 to release hydraulic pressure in a conduit 34, feeding a relay 16 holding the stopvalve 2 open, whereby the stop-valve closes until the trip has been reset manually. The tripanticipator comprises a pilot valve 36 operated in accordance with speed, by a governor which may, as shown, be the main speed governor 12. When the trip-anticipator speed is reached, the valve 36 releases the hydraulic pressure in a conduit 40 to cause a spring-loaded dump valve 37 to release the hydraulic pressure in a conduit 35 feeding the relay 16. The stop-valve 2 consequently closes. Provided the turbine speed does not thereafter reach a value at which the overspeed trip 15 is operated, the stop-valve 2 re-opens when the speed subsequently falls below the trip-anticipator speed. Instead of being constant, the trip-anticipator speed setting may decrease at loads above 85% of full load to reduce still further the peak speed attained upon loss of such loads. In this case, when the control valves 3 are opened beyond the opening corresponding to 85% of full load, the sleeve 39 of the pilot valve 36 is raised from its normal position by an extension 56 of the piston rod of servomotor piston 27, acting through an adjustment screw 57 and a lever 51, to reduce the trip-anticipator speed. A dashpot 58 holds the sleeve 39 in its elevated position for a few seconds after a sudden drop of the extension 56 caused by sudden loss of load, to give time for the reduced setting of the trip-anticipator speed to take effect. In the case of a multi-stage turbine, the intercept valve and the stop-valve at the inlet to the I.P. turbine are controlled jointly with the valves 3, and 2, as indicated at 29, and 34a, 35a.
Patent GB-998617-A (GB)
Title: Sealing gland
Inventor: ALCOCK ERNEST
IPC: F16J15/40
Filed: 1963-07-24
Abstract: 998,617. Seals. MONO PUMPS Ltd. July 24, 1963, No. 29387/63. Heading F2B. A gland for sealing a rotatable spindle 1 where it passes through the wall of a powder container 3 comprises a bearing device 16, 17 which, on the side of the gland remote from the powder, is connected to a source of gas under sufficient pressure to prevent powder from entering the gland and the gland from running hot. A torsion spring 19 is provided to prevent rotation of the bearing device while permitting it to take part in any orbital or radiallyreciprocating motion of the spindle. Bellows 24 completely surround the outward end of the spindle and interconnect the said wall and the bearing device. Washers 22 act against a radial surface of the bearing device to seal between the latter and the bellows. Compressed gas is supplied to the bearing device through a tube 40 and a felt washer 42 at the outer end of the bearing ensures that there is a leakage of the gas into the bellows. The invention may be applied to the gland disclosed in Specification 792,197.
Patent GB-1139870-A (GB)
Title: Improvements in or relating to mine roof support assemblies
IPC: E21D17/02
Filed: 1967-06-26
Abstract: 1,139,870. Cantilever extensions for mine roof supports. GEWERKSCHAFT EISENHUTTE WESTFALIA. 26 June, 1967 [25 June, 1966], No. 29459/67. Heading E1E. A cantilever extension 2 for a mine roof support beam 1 is hydraulically advanced through the medium of a relatively sliding sleeve 5 which when partially retracted actuates a pivotal locking mechanism 8, 9 through a cam track 5a. The extension is urged into engagement with the roof by co-operating wedges provided on the members 1, 2. On retraction, a ringer on the sleeve 5 engages a spring carried by the member 2 to withdraw same, see Fig. 7 (not shown).
Patent GB-1500024-A (GB)
Title: Optical fibre severing apparatus
IPC: G02B6/00
Filed: 1975-07-14
Abstract: 1500024 Cutting optical fibres POST OFFICE 5 Aug 1976 [14 July 1975] 29511/75 Heading C1M In a device for severing optical fibres the fibre is clamped against an anvil to which a constant force is applied independent of the displacement thereof to apply a pre-set tension to the fibre which is engaged by a knife for initiating fracture thereof. In Fig. 3 the fibre is clamped against curved anvil 4 by clamps 1 and 42 and is cut by blade 5 which descends on the fibre under the control of a dash pot and spring 18.
Patent GB-537176-A (GB)
Title: Improvements in or relating to adhesives
IPC: C09J161/24
Filed: 1939-11-06
Abstract: 537,176. Resinous condensation products. BRITISH INDUSTRIAL PLASTICS, Ltd., and BROOKES, A. Nov. 6, 1939, No. 29513. [Class 2 (iii)] An adhesive comprises an aqueous ureaformaldehyde resin in which is incorporated a comminuted cellulosic filler, e.g. wood flour, powdered cotton, and disintegrated sulphite or kraft pulp, impregnated with benzyl alcohol. Setting of the adhesive may be effected by adding hardening agents such as ammonium chloride immediately prior to use or applying them to one of the surfaces to be united. In an example a neutral formalin solution of urea is boiled and formic acid is added, while boiling, to pH6. Boiling is continued till a sample remains clear on cooling to 20 ‹C. After neutralization with caustic soda and evaporating, the viscous resin is kneaded with cotton flock impregnated with benzyl alcohol.
Patent GB-1429876-A (GB)
Title: Pneumatic tyres
IPC: B60C9/20
Filed: 1973-06-01
Abstract: 1429876 Pneumatic tyres V N PRASCHIKIN V P IVANOVA Z D VLASOVA L D SLJUDIKOV and L A UPORINA 1 June 1973 29521/73 Heading B7C A pneumatic tyre comprises a breaker positioned between the tread 6 and a radial ply carcass 1, the breaker comprising primary parallel-cord plies 4, 5 sandwiched between secondary parallel-cord plies 2, 3. The cords of each primary ply make an angle of between 5 and 30 degrees with the mid-circumferential plane, whilst the cords of each secondary ply make an angle of between 55 and 90 degrees with the mid-circumferential plane. The cord count per unit of ply width is less in the secondary plies than in the primary plies. Preferably the cord count per unit width in the secondary plies is between 0À5 and 0À75 than of the primary plies.
Patent GB-824680-A (GB)
Title: Oral preparations
IPC: A61K8/66
Filed: 1956-09-28
Abstract: A dentifrice (including ointment), a mouth wash, chewing-gum or a lozenge contain as an essential active ingredient a compound of formula <FORM:0824680/VI/1> where R is a hydroxymethyl or aminoethyl group and X is a hydrogen atom, or R is a formyl group and X is a hydrogen atom or a phosphonyl group or a salt or complex of such a compound. Compounds so included are pyridoxine, pyridoxamine, codecarboxylase, pyridoxamine phosphate, Vitamin B6-borate complex, and pyridoxal, i.e. 2-methyl-3-hydroxy-4 - formyl - 5 - hydroxymethyl pyridine and their salts such as the hydrochloride.  The amount included in the preparations may be from 0.05 to 5% by weight. Pantoyltaurine and bis - betapantoylaminoethyl disulphide may be added to the composition to interfere with L.acidophilus and pantothenic acid metabolism. Papain, to digest protein, may be added to chewing gum or, as in Example 8, to a toothpowder containing pyridoxine hydrochloride as active ingredient.  A dental ointment, Example 3, consists of pyridoxal hydrochloride 0.005 gms; white wax 0.054 gms; white petrolatum 0.941 gms.
Patent GB-520169-A (GB)
Title: Improvements in or relating to rubber plugs or stoppers
IPC: B62K21/26
Filed: 1938-10-14
Abstract: 520,169. Stoppers. UNIVERSAL RUBBER PAVIORS, Ltd., and GAISMAN, L. Oct. 14, 1938, No. 29750. [Class 125 (iii)] [Also in Group XXXI] A rubber plug or stopper for closing the ends of cycle handle-bars, or for other purposes, is formed on its outer periphery with one or more ribs or projections, and with a groove or recess immediately adjacent to each rib or projection into which the rib or projection is wholly or partly displaced in one direction as the plug is pressed into position, whereby the plug is held firmly in position by the pressure or wedging action of the ribs &c. against the inner wall of the handle-bar &c. without the use of screw clamping or expanding devices. In one form, Fig. 2, the rubber plug has a cylindrical body a formed with two annular ribs c of saw - tooth cross - section and with adjacent annular grooves d of similar angular shape and extending inwardly from the surface of the cylindrical part a. When the plug is pressed into the handle-bar tube &c. the ribs c are pressed back and displaced into the grooves d. The ribs c tend to move outwards and wedge against the wall of the tube when an 'outward pull is exerted on the plug. In another form, Fig. 3, the plug g is formed'with a series of projecting studs h of angular cross-section, co-operating with adjacent angular recesses i, each stud and recess having a radial and an inclined wall. In another form, the plug is formed with both an annular rib and a series of longitudinal studs. The longitudinal studs may be inclined to the axis of the plug. The annular ribs may be discontinuous, or may be of helical form.