baber/WOPTO huggingface dataset:
Patent GB-901244-A (GB)
Title: Improvements in or relating to hydraulic actuating mechanism
Inventor: TUNNELL FRANK GEOFFREY
IPC: F16D48/02
Filed: 1959-05-12
Abstract: 901,244. Fluid-pressure brakes. PLESSEY CO. Ltd. March 17, 1960 [May 12, 1959], No. 16183/59. Class 103 (1). [Also in Groups XXIV, XXIX and XXXI] Hydraulic actuating mechanism has a cylinder 5 with a main piston 2 connected to an auxiliary piston 4 which limits the forward stroke of piston 2, whereby piston 4 participates in any excess of return stroke of piston 2 beyond a predetermined length, and a non- return valve 12, 14 supplying liquid to take-up the space vacated by movement of piston 4 with piston 2 but preventing escape of liquid during reverse movement of piston 4. Counterclockwise rotation of lever 15 operates valve 19 to stop the flow of pressure fluid from port 16 to port 21 and connects port 16 to chamber 5 via port 17, the pressure moving piston 2 to the right to release a clutch which is completely released when piston 2 abuts piston 4, fluid displaced by piston 2 passes to port 21 via port 18. On clutch engagement, clutch springs move piston 2 to the left and on wear of the clutch linings, a stop ring 7 in piston bore 8 engages a circlip 10 on piston 4 to move piston 4 with piston 2 until the clutch is fully engaged. The engagement of pistons 2 and 4 pressurizes the liquid in chamber 11 which acts via line 22 to move a piston 23 in brake cylinder b to apply the brakes; on re-engagement of the clutch, brake release springs move piston 23 until shoulder 29 engages piston 25 which is held fixed by liquid behind it; a circlip 26 moves piston 25 with piston 23 in the brakeapplying direction when the brake linings have worn, fluid being admitted to behind piston 25 via non-return valve 28. A re-setting valve 37 enables liquid to be removed from behind piston 25 for re-setting purposes. Pressure created in chamber 5 on clutch release acts via line 31 on plunger 32 to set an engine throttle to an idle position which is adjustable by a screw head 34.
Patent GB-761700-A (GB)
Title: Improvements in or relating to control valves
IPC: F15B13/04
Filed: 1954-06-01
Abstract: 761,700. Fluid-pressure servomotor control systems. BENDIX AVIATION CORPORATION. June 1, 1954 [June 8, 1953], No. 16218/54. Class 135. A piston valve 22 controlling working ports 13, 14 is actuated hydraulically under the control of a pilot valve 19 which is moved in either direction from a neutral position by an.electric torque-motor 25, and a spring arm 30 interconnecting the main valve 22 and the torque motor applies a returning force to the pilot valve so that the latter regains its neutral position when the main valve has been moved an amount proportional to the current supplied to the torque motor. The main and pilot valves have common supply and exhaust conduits 11, 12. Annular chambers 17d, 17e in the pilot valve body connect with actuating chambers at the ends of the main valve.
Patent GB-729006-A (GB)
Title: Improvements in or relating to copolymers of 1,3-butadiene and 1.1-difluoro-2,2-dichloroethylene
IPC: C08F236/04
Filed: 1953-06-12
Abstract: Copolymers of 1,3-butadiene and 1,1-difluoro-2,2-dichloroethylene containing 30 to 50 mol. per cent bound 1,1-difluoro-2,2-dichloroethylene may be prepared by polymerizing monomeric mixtures of 1,3-butadiene and 1,1-difluoro-2,2-dichloroethylene containing more than 35 mol. per cent, preferably 35-65 mol. per cent of 1,1-difluoro - 2,2 - dichloroethylene.  Polymerization may be effected in bulk, solution or aqueous emulsion in the presence of a fatty acid, rosin acid or amine soap or an alkyl, aryl or aralkyl sulphate or sulphonate as emulsifier, or in suspension in the presence of a suspension agent such as gelatine, casein, clay, or polyvinyl alcohol, and in the presence of a catalyst such as potassium persulphate, benzoyl peroxide, cumene hydroperoxide or alpha-alpha1-azodiisobutyronitrile. A redox system may also be utilized, e.g. one using cumene hydroperoxide in the presence of sodium sulphite and tetraethylene pentamine. Modifying agents such as dodecyl mercaptan, xanthogen disulphides and carbon tetrachloride may be utilized and the reaction may be stopped at any desired degree of conversion by the use of a polymerization terminator such as hydroquinone or by dumping the reaction mix into alcohol.  The copolymers of the invention may be plasticized with ester plasticizers such as dibutyl, dioctyl or di-isooctyl phthalate, tricresyl phosphate, dioctyl adipate or dibutyl or dioctyl sebacate, which may be mixed with the copolymer by mechanical means or by adding the plasticizer in emulsion to a copolymer latex.
Patent GB-226250-A (GB)
Title: Improvements in the manufacture of insecticides, sheep dips, vermifuges and the like
IPC: A01N65/20
Filed: 1923-06-23
Abstract: 226,250. McDougall, I., and Howles, F. June 23, 1923. Insecticides; sheep dips; medicines for internal use.-For the production of insecticides, vermifuges, sheep-dips , and the, like, the roots of plants of the derris family or of the genus Dalbergia are pulped and scoured by mechanical means with water or a solution of a substance, such as soap, which lowers the surface-tension of water. The emulsified product is filtered to remove fibrous matter, and may then be passed through a pressure filter or evaporated at a low temperature under reduced pressure. The product so obtained may be prepared for use by mixing with water, soaps of various kinds, sulphur, antiseptics, or water-softening materials. Alternatively, the active principle in the initial filtrate may be coagulated by treatment with reagents such as lead acetate or basic salts of aluminium or iron, and the separated coagulum freed from metallic salts by treatment with dilute acid; when required for use, the coagulum is treated with water or emulsifying agents such as soaps. Specifications 3204/11, 10215/11, 8322/12, and 214,822 are referred to.
Patent GB-1470384-A (GB)
Title: Emulsifiers
IPC: C09K23/00
Filed: 1974-04-05
Abstract: 1470384 Emulsifier NEWTON CHAMBERS & CO Ltd 5 April 1974 [5 April 1973] 16375/73 Heading B1V [Also in Division AS] An emulsifier comprises a mixture of 10- 90% castor oil soap and 90-10% of alkyl sulphate(s) in which the alkyl group(s) each contain 8-18 carbon atoms, the percentages being by weight based on the total weight of the mixture. The alkyl sulphates may be sulphates of primary or secondary long chain (C 8-18 ) aliphatic alcohols. A disinfectant composition comprises an aqueous emulsion of at least one component selected from essential oils, perfumes and phenolic compounds in which the emulsifier is as above. The component of essential oils and/or perfumes may be predominantly or wholly pine oil.
Patent GB-1417277-A (GB)
Title: Fibrinolytic substances
IPC: C12N9/64
Filed: 1973-04-05
Abstract: 1417277 Medicinal bile extract SOUTH AFRICAN INVENTIONS DEVELOPMENT CORP 5 April 1973 [5 April 1972] 16396/73 Heading A5B [Also in Division C3] A pharmaceutical preparation having fibrinolytic activity comprises a fibrinolytically effective and/or platelet aggregation inhibiting concentration of a fibrinolytic substance, extracted from mammalian bile, which has, in addition to its fibrinolytic activity, the following characteristics: (i) it occurs in mammalian bile and can be recovered therefrom, after removal of interfering bile acids if present, by precipitation with ammonium sulphate and further purification by exclusion chromatography on crosslinked polydextran suitable for the separation of proteins in the molecular weight range from 5000 upwards, (ii) it does not activate plasminogen, trypsinogen and chymotrypsinogen, (iii) it is non-dialysable, (iv) it is a protein, (v) at pH 7.4 it behaves as an anion, and fibrinolytically active addition products thereof.
Patent GB-594061-A (GB)
Title: Improvements in and relating to catamenial tampons
IPC: A61F13/20
Filed: 1945-06-27
Abstract: 594,061. Catamenial tampons. SMITH & NEPHEW, Ltd., T. J., and COULSON, E. June 27, 1945, No. 16404. [Class 81 (ii)] A catamenial tampon made up of a covered adsorbent pad, is characterized by the fact that before compression the pad has one end turned to lie level on the other end, the double thickness being stitched across adjacent the said ends, the whole then being turned inside out to bring the ends to the interior, a withdrawal cord or tape being attached at any period of the manufacture before compression. As shown in Fig. 10, a looped cord 28 is laid on a covered pad 27 with one side of the loop projecting over one end of the pad. The pad is thus doubled across a central vertical line to enclose the free ends of the cord and stitched across the loop parallel to the ends of the pad at 35, Fig. 15, and the whole turned inside out and then compressed. Alternatively, the cord may be laid on the pad in U-shape with the base of the U projecting beyond one end of the pad ; after reversal, the cord is knotted adjacent the stitched seam. In another modification, a single or doubled tape may be used. The covered pad may be made of an absorbent cotton wool or cellulose pad 20 inserted in a reversed gauze or stockinette covering 25; Fig. 9. This covering may be made from open woven material in the form of alternate tubular portions connected by single thickness portions 26, by cutting longitudinally in the single thickness portion and turning the resultant tube inside out. Specifications 520,209 and 543,158 are referred to.
Patent GB-237204-A (GB)
Title: Improvements in liquid fuel burners
IPC: F23D11/10
Filed: 1924-04-12
Abstract: 237.204. Rutherford, E. J. Y. April 12, 1924. Spray burners. - In a liquid-fuel burner of the type in which the fuel is atomized by a jet of steam generated in a flash-boiler heated by the burner, the axis of the fuel nozzle h intersects the axis of the steam nozzle c at an angle of about 85‹. The steam is generated in the burner shown by the passage of water through tubes a<1>, a<2>, a3, a<4> screwed at one end to the base of a hollow cappiece a. The tubes a<1>, a<3> are connected at their other end to a hollow cross-bar b through which they deliver steam to the centrally-arranged nozzle c so as to issue in the direction of the cap-piece a. The nozzle c may comprise a central orifice c<1> having an enlarged mouth c<2> and air-inlet holes c<3>. A screw plug d carrying a pricker needle d<2> may be fitted in the bar b for clearing the nozzle c. Specification 27362/03 is referred to.
Patent GB-587483-A (GB)
Title: Extracting beryllium or beryllium compounds from beryllium ores
IPC: C01F3/00
Filed: 1944-08-30
Abstract: Beryllium compounds are obtained from beryllium ores by fusing the ore with an alkali borate (with or without an alkali carbonate) or a mixture of boric acid and soda ash, and then either disintegrating the mass by quenching in water or powdering it; in either case, the entire beryllium content is soluble in dilute sulphuric or other acid or in caustic alkali, and the silica can then be filtered off.  The fusion mixture may consist of equal quantities of beryl and anhydrous borax or a mixture of 1 part of beryl to 1/2 part of sodium borate and 1/2 part of anhydrous sodium carbonate.  In an example, the treated and quenched ore is dissolved in boiling 50 per cent. sulphuric acid, boric acid crystals are recovered by cooling, iron precipitated by excess alkali and beryllium hydroxide recovered by boiling after reducing the alkalinity to less than a pH of 13.5 the hydroxide being filtered off, and calcined to beryllium oxide. Alternatively, the beryllium may be recovered from its solution in acid by precipitation with iron and aluminium by ammonia, dissolving in just enough hydrochloric acid, and adding concentrated potassium oxalate solution, when a crystalline precipitate of a potassium beryllium oxalate is obtained.
Patent GB-895965-A (GB)
Title: Improvements in or relating to reversible ploughs
IPC: A01B3/42
Filed: 1958-05-22
Abstract: 895,965. Agricultural implements. BOMFORD, D. R. Aug. 12, 1959 [May 22, 1958], No. 16521/61. Divided out of 895,964. Class 6(1). A reversible plough is provided with a number of pairs 64, 65 of oppositely handed plough shares each pair being mounted at opposite ends of a post 60, the posts 60 being secured on opposite sides of a beam 12 by means of shear pins the beam being rotatable about an axis parallel to and displaced laterally from its longitudinal axis. As shown the beam 12 is pivoted on brackets fixed to a cross member 41 and to a rearward extension 43 of the crossmember. The plough is attached to the hydraulic lift linkage 37, 38 of a bracket. Skim mouldboards 67 and depth wheels 69 are provided.
Patent GB-1005958-A (GB)
Title: Panel-mounted electrical connector
IPC: H01R9/24
Filed: 1962-05-01
Abstract: 1,005,958. Plug boards; two-part couplings. J. TYMKEWICZ. May 1, 1962, No. 16576/62. Heading H2E. A connector A comprises a body having a peripheral flange 17 engaged with one face of a panel 15 when part of the body is inserted through an opening 16 through panel 15, the body having a pair of T-shaped guide-ways 19 at its opposite sides extending inwardly from the flange 17 in converging directions, a correspondingly T-shaped clamping member disposed for sliding movement in each guide-way, and means for moving the clamping members lengthwise of the guide-ways. The clamping members 18 are moved by turning screw 20 from positions protruding from the body and clamping the opposite face of the panel (Fig. 4) to positions retracted into the body when the clamping members are moved away from the flange (Fig. 7), to permit withdrawal of the connector from the opening 16 in panel 15. The body A is made so that it may if desired be separated into single or double elements 11 and 14 (Fig. 1) by sawing through the body from the rear side opposite the score marks 1-10a and breaking them off at the score marks. A pair of T-shaped guide-ways 19 are provided in alignment with each of the score marks 1-10a and thus each pair of units 11 are provided with a pair of guide-ways 19 so that two or more units may be detachably connected to the panel. Each unit is provided with a pair of sockets 12, 13 provided with tubular metal linings joined by connections 21, 22 to contact screws 23, 24. If the connectors are used with thermocouples to connect them into different circuits the linings of sockets 12, 13 may be of different alloys. Three identification discs are provided on each unit, a pair on the front face and one on the rear. The body is moulded of suitable electrical insulating material.
Patent GB-746848-A (GB)
Title: Improvements in or relating to indirectly heated boilers
IPC: F24D1/00
Filed: 1953-06-16
Abstract: 746,848. Heating steam boilers by steam; hot-water boilers. ROSSI, G. June 16, 1953 [June 26, 1952], No. 16636/53. Classes 64(1) and 123(2). In an indirectly heated steam or hot-water boiler, a number of water tubes B which surround and define the boiler combustion chamber deliver steam-water mixture into a collector drum A in the steam space of which is disposed a heat-exchanger 6. The heat-exchanger consists either of a number of parallel, corrugated tubes extending between flanges 4, 5 at the respective ends of the drum as shown in Fig. 1 or a number of single-bend U-tubes connected into a divided header mounted at one end of drum A. Water to be heated or evaporated by the heat of condensation of the steam in drum A is supplied to the heat-exchanger at 7, hot water or steam being withdrawn at 8. To avoid priming due to the restriction of the steam space by the heat-exchanger, drum A may be replaced, by a multitubular collector header consisting of two groups of six interconnected tubes 12 11 , see Fig. 7. Water tubes 15 11  deliver steamwater mixture into one of the middle tubes of each group wherein the water separates and drains to the lower tubes from which it passes into downcomers 14 11 . The steam rises into the upper tubes in which are disposed interconnected heat-exchanger sections 16<SP>11</SP>. Water is supplied to the heat-exchanger at 26 and the indirectly heated steam-water mixture passes through a pipe 19 11  into the uppermost pair of four tubes 22 which serve to separate the mixture, steam being withdrawn at 25 whilst water returns to the heat-exchanger through a pipe 17 11 . Fig. 8 shows a hot-water boiler for a central heating plant. Water tubes 27 which define a firebox deliver hot water into a header 29 in which is disposed a nest of heating tubes 32 which are connected in the thermosiphon circuit of the heating system.
Patent GB-1140402-A (GB)
Title: Improvements in or relating to devices for separating and handling stoppering or capping capsules
IPC: B65G47/08
Filed: 1966-04-15
Abstract: 1,140,402. Shoots; reciprocating conveyers. TREFIMETAUX. 15 April, 1966 [16 April, 1965], No. 16683/66. Headings B8A and B8S. Apparatus for successively separating capsules 16, Fig. 1, e.g. for bottles, from a stick 2 of nested capsules, comprises a head 18 having a wall which is deformable to engage or release the capsules, the head being mounted for reciprocation towards and away from the stick 2 to move the leading capsule away from the rest of the stick, the latter being restrained from movement by pressure means. The stick 2 is gravity fed down a shoot 3 and when the last capsule has moved beyond a microswitch a further stick of capsules is supplied to the shoot 3 from a sloping table (4), Fig. 4 (not shown), by a pivotally mounted cradle 11 operated by a pneumatic actuator 13. The shoot 3 is adjustably mounted on a stand 9 which also supports a sliding block having attached thereto the head 18. The latter comprises a easing secured to a sleeve 23 which is rotatably mounted in a bearing 21a. A spring- loaded rod 24 is slidably mounted in the sleeve 23 and when the head 18 is near the end of its rearward stroke the rod 24 engages an adjustable fixed stop 28 to eject the capsule carried by the head. The deformable wall is formed by a rubber diaphragm within the casing, an annular chamber between the diaphragm and the casing being connected to a source of compressed air. The sliding block is driven by a motor 29, through a belt drive 29a, reduction and other gearing and a crank and connecting rod. The motor 29 also drives a cam shaft carrying four cams one of which operates the pressure means 19, another operates the stop 17, another rotates the sleeve 23, and the fourth controls the compressed air flow to the head 18. When a capsule is ejected from the head 18 it drops into a trough 40 along which it is moved by a member 41 mounted on the bearing 21a, during the next forward stroke of the head. The trough 40 leads to a platform on to which the capsule topples but on which the capsule is retained by a member 42 until the head again moves rearwardly whereupon the capsule rolls on to a delivery slab 7. In a second embodiment, Fig. 6 (not shown), the head 18 comprises a steel bush having an opening for extension therethrough of the rod 24 and having a hole for connection to a vacuum source. The deformable wall is formed by a rubber bush which normally engages the capsules but which in response to the vacuum releases the capsules. Instead of the head 18 engaging the capsules from the outside it may engage them from the inside. The wall of the head may be deformable by fluid or spring pressure or other mechanical device.
Patent GB-384341-A (GB)
Title: Improvements in and relating to fan installations for the propelling of hot gases
IPC: F04D29/58
Filed: 1931-06-08
Abstract: 384,341. Centrifugal fans. ADAMCIKAS, M. and MASSERA, G., Astor House, Aldwych, London. June 8, 1931, No. 16705. [Class 110 (i).] An axial flow fan b for propelling hot gases is arranged in a band a and driven by an external motor c through a shaft g housed in a casing j in a recess f in the band. Cooling air is driven by an auxiliary fan m over the shaft and its bearings h, i, and returns through the space between the casing j and the wall of the recess. The portion of the shaft between the inner bearing h and the fan b may be cooled by means of a water jacket n.
Patent GB-334244-A (GB)
Title: Improvements in or relating to fluid pressure operated control systems and relay apparatus
IPC: F16K31/122
Filed: 1929-05-30
Abstract: 334,244. Blacklock, T., Walker, G. W. Higgs-, and Associated Electrical Industries, Ltd. May 30, 1929. Exhaust diversion valves.-A control system for operating a number of members in sequence, such as valves 2, 3 for controlling the passage of exhaust steam to a condenser and exhaust turbine respectively as described in Specification 334,245, comprises a relay device for each operated member, and an auxiliary valve, 24 for controlling an extension 11<1> of the control line; the valve 24 opens automatically to allow pressure to pass from the line 11 to the extension 11', and is positively opened after the line 11 has been put to exhaust by means of a tappet 26 operated from the piston 4. Each relay comprises a loaded piston 4 and a valve 10 responsive to fluid pressure in a control line 11, quick action of the piston 4 in one direction being obtained by arranging that the valve 10 in one position admits fluid from a high pressure supply pipe 12 to one side of the piston and in its other position places the two sides of the piston in communication with each other and with a drain pipe 13.
Patent GB-950585-A (GB)
Title: Improvements relating to single sideband electrical modulator apparatus
Inventor: SPENCE CHRISTOPHER DONALD EWAR
IPC: H03C1/60
Filed: 1959-05-15
Abstract: 950,585. Amplitude modulating systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 13, 1960 [May 15, 1959], No. 16786/59. Heading H4L. A single sideband modulated wave sin (#c+#m).t is derived as the sum of two products (sin #c.cos #mt) and (cos #c.t sin # m t) from Hall plate multipliers each having a semi-conductor plate between two ferrite members. To this the carrier sin #c.t is applied to the semiconductor plate of one Hall modulator M2 and to the magnetic field coil of the other modulator Ml so that it is applied in relative phase quadrature to both modulators. Further, the modulation sin # mt  is directly applied to the plate of the modulator M1 and through a 90 degrees phase shifter to the magnetic field coil of the other modulator, an amplifier A also ensuring the current through the coil impedance being constant for all frequencies in the modulation range. As shown, the outputs may be added by a transformer and applied to class B amplifiers before transmission. The 90 degrees phase shifter may comprise two cathode followers with inputs in opposite phase and each output energizing, through a capacitor and an inductor respectively a common resistance. Specification 883,338 is referred to.
Patent GB-377373-A (GB)
Title: Improvements in beam weighting motions of looms for weaving
IPC: D03D49/08
Filed: 1931-06-10
Abstract: 377,373. Letting off warps in looms. PICKFORD, J., 420, Lees Road, Oldham. June 10, 1931, No. 16844. [Class 142 (ii).] The friction on the warp beam is automatically reduced during weaving by moving weights C, C, Fig. 1, towards the fulcrum of their supporting levers B, B, the requisite movement being imparted by means of a screw D which is operatively connected with one of the weights and is rotated by pawl and ratchet mechanism, actuated by a projection G on the beam flange, Fig. 1, or on the beam ruffle, Fig. 5. The weights are moved in unison by means of a connecting chain c which may be accommodated in channels formed in the weight levers B, B and each weight comprises two parts connected by a bridge piece c<1> and runner, grooves being formed on the inner faces to engage a nut d<1> on the screw. Manual adjustment is facilitated by the provision of a handle d<3> on the screw D and the weight may be :removed entirely from the beam by means of a screw jack H.