baber/WOPTO huggingface dataset:
Patent GB-307937-A (GB)
Title: Process for the manufacture of rubber like products
IPC: C08F36/04
Filed: 1929-03-15
Abstract: 307,937. I. G. Farbenindustrie Akt.- Ges. March 16, 1928, [Convention date]. Caoutchouc, synthetic. - In the production of rubber by polymerizing emulsified diolefines, the emulsion is homogenized prior to polymerization. for instance by forcing the emulsion through narrow openings. In an example isoprene is emulsified with sodium oleate solution, forced through plates of sintered glass, and polymerized at 60‹ C. with shaking. The Specification as open to inspection under Sect. 91 (3) (a) includes other examples in which (1) butadiene is emulsified with sodium oleate and caustic soda solutions, homogenized according to German Patent 163,372, and polymerized at 60‹ C. for 2 days; (2) a mixture of equal parts of butadiene and benzene is emulsified with caustic soda and sodium stearate solutions. homogenized, and then polymerized at 60‹ C. for 3 days; (3) a mixture of butadiene and 2 : 3-dimethyl butadiene (1: 3) is emulsified with sodium oleate and caustic soda solutions, homogenized, and polymerized. This subject-matter does not appear in the Specification as accepted.
Patent GB-589992-A (GB)
Title: Improvements in voltage regulation for electric generators, rotary transformers and the like
IPC: H02P9/22
Filed: 1945-04-06
Abstract: 589,992. Automatic control systems. WILLIAMS, B. J. April 6, 1945, No. 8612. [Class 38 (iv)] Voltage regulation apparatus comprises a main carbon pile regulator and a pilot regulator arranged to buck or boost as appropriate the effective ampere-turns of the main regulator coil. In the arrangement shown, a main carbon pile 12 is controlled jointly by a voltage coil 13, wherein the current flow corresponds to a voltage setting less or more than that required at output terminals 19, 20, and an auxiliary coil 18 connected correspondingly either to assist or oppose the ampere-turns of the voltage coil 13, and in series with a pilot carbon pile 15 controlled by a voltage coil 16 adjusted at the voltage setting of the main regulator to give a current flow in the auxiliary coil 18 to increase or decrease as required the effective excitation of the main regulator so that it acts to maintain the output voltage at the required value. In a modification, Fig. 4 (not shown), the current through the pilot regulator carbon pile passes through some of the turns of the main regulator coil instead of through a secondary coil. In a further modification, Fig. 5 (not shown), the armature of the main regulator operates both the main carbon pile and the pilot carbon pile. In a rotary transformer circuit, Fig. 2 (not shown), a pilot regulator is utilized on the output side to act on the auxiliary coil of a main regulator on the input side so that the latter is adjusted responsively to input and output voltage fluctuations. In a further application, Fig. 3 (not shown), a bridge rectifier and pilot regulator connected across the output of a separately excited alternator supply current to the main and auxiliary coils respectively of a main carbon pile inserted in the alternator field windings to vary the current therein and maintain constant output voltage. An electronic pilot regulator may be used instead of the carbon pile type.
Patent GB-447704-A (GB)
Title: Improvements in or relating to the rust-proofing of ferrous articles
IPC: C23C22/74
Filed: 1935-03-19
Abstract: Wetting-agents, e.g. sulphonated lauryl, myristyl, or oleyl alcohol, or the condensation products of naphthalene-b -sulphonic acid with alcohols having 3 or more carbon atoms, are added to solutions of phosphoric acid and chromic acid, chromic anhydride, or a soluble chromate or dichromate for use in the rustproofing of ferrous articles.ALSO:A ferrous article is rust-proofed by coating it by spraying, brushing, or dipping with an aqueous solution of phosphoric acid and chromic acid, chromic anhydride, or a soluble chromate or dichromate, the concentration of phosphoric acid being at least 10 per cent.  When a chromate or dichromate is employed the concentration is equivalent to at least 25 parts of sodium dichromate dihydrate per 100 parts of phosphoric acid and when chromic acid or chromic anhydride is used the concentration is equivalent to at least 33 parts of chromic anhydride per 100 parts of phosphoric acid.  The upper limit of the concentration of chromium compound is determined by the fact that the solution must contain some free phosphoric acid. After treating with the solution the article is dried, preferably at a temperature between 120 and 200 DEG  C.  The preferred solution contains from 10-20 per cent of phosphoric acid and from 10-15 per cent of sodium dichromate.  A wetting agent such as sulphonated lauryl, myristyl, or oleyl alcohol, or the condensation products of naphthalene-b -sulphonic acid with alcohols having 3 or more carbon atoms may be added to the solutions.  To prevent streaking there may be added to the solution an inert colloidal substance, for example 5-20 per cent of bentonite, clay, or colloidal silica.  A stiff gel, which may be applied with a cloth, can be obtained by adding liquid sodium silicate to the solution.  After drying, the surface is brushed or washed and may subsequently be painted.  Specification 398,180 is referred to.
Patent GB-391589-A (GB)
Title: Improvements in or relating to mechanical stokers particularly of the underfeed type
IPC: F23K3/12
Filed: 1932-03-23
Abstract: 391,589. Furnace grates. AMERICAN ENGINEERING CO., Aramingo Avenue, Philadelphia, U.S.A. March 23, 1932, No. 8642. Convention date, July 28, 1931. [Class 51 (i).] In a mechanical stoker of the kind described in Specification 308, 345, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], the plate 2, Fig. 1, at the lower ends of the retorts is provided with a removable tip protected by non- metallic refractory blocks 9. The extension grate 3 which is adapted to be reciprocated comprises a number of sections each consisting as shown in Fig. 3, of side plates 12 connected by transverse bars 13 on which are mounted non-metallic refractory blocks 18, 19, Figs 4 and 5, having channelled surfaces for the passage of air. The lower row of blocks 19 are recessed at 26 to engage with the bar 27. When in position the blocks overlap and are secured by a top plate 28. The vertical grate, forming one wall of the ashpit, is formed of bars 33 which are recessed to receive refractory blocks 34.
Patent GB-484749-A (GB)
Title: Process of manufacturing an active dry preparation of papaine and similar vegetable enzymes
IPC: C12N9/50
Filed: 1937-03-24
Abstract: An active dry preparation of papaine or similar vegetable protease is obtained by mixing it with a mixture of dry yeast containing emulsin, and seed containing amygdalin or with seed containing both amygdalin and emulsin.  Liberation of hydrogen cyanide and subsequent activation occur only when the preparation is moistened.  The seed is de-husked, de-oiled, and pulverized before admixture.  Suitable seeds are plum, apricot, peach, almond, cherry, apple, quince, red currant, poppy, lucerne, lentil, lupin, ricinus, cocoa, soya, olive, pumpkin, oat, barley, and germinant corn.  In an example, 50 parts by weight papaine, 30 parts yeast, and 20 parts cocoa seed are admixed.ALSO:An active dry preparation of papain or similar vegetable protease is obtained by mixing it with a mixture of dry yeast containing emulsin, and seed containing amygdalin or with seed containing both amygdalin and emulsin.  Liberation of hydrogen cyanide and subsequent activation occur only when the preparation is moistened.  The seed is de-husked, de-oiled, and pulverized before admixture.  Suitable seeds are plum, apricot, peach, almond, cherry, apple, quince, red currant, poppy, lucerne, lentil, lupin, ricinus, cocoa, soya, olive, pumpkin, oat, barley, and germinant corn.  In an example, 50 parts by weight papain, 30 parts yeast, and 20 parts cocoa seed are admixed.
Patent GB-918406-A (GB)
Title: Process for the manufacture of cyclohexanol
IPC: C07C29/04
Filed: 1961-03-09
Abstract: A process for the manufacture of cyclohexanol by hydration in the liquid phase comprises hydrating cyclohexene in the presence of water and about 0.1 to 1.0% of emulsifier on a strongly acid cation exchange resin (i.e. containing sulphonic or phosphoric acid groups) at a temperature above 100 DEG C. and at elevated pressure in a closed system.  Preferred emulsifiers are non-cation active e.g. ethoxylated ricinoleic acid, ethylphenol glycolether or alkylarylpolyether alcohol.  Preferred cation exchange resins are those having a polystyrene matrix and sulpho groups as active groups. Examples are furnished.  Apparatus for carrying out the process is described.
Patent GB-1123891-A (GB)
Title: Imidazolidine derivatives
Inventor: DINWOODIE ANDREW HARPER
IPC: C07D233/52
Filed: 1966-02-28
Abstract: The invention comprises difluoraminated derivatives of alkoxy-substituted 2-nitrimino-imidazolidines and their preparation by reacting 4,5 - dialkoxy - 2 - nitriminoimidazolidines (which may be prepared as described in Specification 1,103,285) with difluoramine in an inert atmosphere in the presence of an acidic condensing agent.  Examples describe the preparation of compounds of the formula <FORM:1123891/C2/1> where R is methyl or ethyl.  Reaction is carried out under difluoramine reflux at about -23 DEG  C. in the presence of strong sulphuric acid, with or without aqueous formaldehyde.  The products are explosive and may be used in propellant compositions.
Patent GB-637059-A (GB)
Title: Improvements in or relating to milling and/or grinding apparatus
IPC: B23Q16/02
Filed: 1948-03-25
Abstract: 637,059. Grinding. HELLYAR, R. A. March 25, 1948, No. 8765. [Class 60] [Also in Group XXII] A self-contained attachment for use in adapting.lathes and milling-machines to grind helical gears, worm gears, twist-drills and the like having teeth or flutes of coarse pitch comprises a base 1 adapted to be fixed to the machine in angularly-adjustable position in relation to the grinding-wheel, a member 2 slidable on the base under the action of a screwed spindle 3, and a headstock 5 carried by the member 2 and provided with a mandrel 6 which is driven from the spindle 3 by a transmission including shafts 8, 9, at feast one worm- and-worm-wheel-reduction, and change-wheel. gearing 10a, 10b. The headstock 5 and a tailstock 7 are fixed to a table 4 which is secured to the member 2 by a bolt 4b engaging one of a number of holes in the member 2. The tailstock 7 is fixed in any one of a number of positions by bolts 7a engaging in holes 4c in the table 4. The mandrel 6 has a dividing head 6a, the adjustable part of which has thereon a clamp 6b for positioning the work-piece 12. The outer end of the mandrel 6 bears in a plate 2b attached to a box-like extension 2a of the slidable member 2. Turning of the spindle 3 by its handle 3c serves both to feed the bed 4 and rotate the dividing head 6a by means of a worm 3a, shaft 9, worm 9b, lay shaft 8, and the changewheel gearing 10a, 10b which drive a pinion 6d keyed to the mandrel 6. The change-wheel gears 10a, 10b are mounted on a slotted arm 11  pivoted about the axis of the mandrel 6. A power drive may be provided for the spindle 3 adjacent the screwed end 3b, and the worm-andworm-wheel-reduction may be provided at one or both ends of the shaft 9.
Patent GB-104610-A (GB)
Title: An Improved Emergency Patch or Breach Cover for use on Ships.
Inventor: MATHEWS WILLIAM
IPC: B63G9/00
Filed: 1916-06-24
Abstract: 104,610. Mathews, W. June 24, 1916. Breach mats.-A breach mat or cover adapted to extend from the ship's keel to 18in. above the water-line is constructed of aluminium “ in thick covered on the inside with three layers of sailcloth and provided on the outside with three horizontal strengthening-strips of aluminium. The patch g is supported by twelve vertical steel ropes m<3> joined in pairs at the top to pulleys t and at the bottom to rings g<1>. The pulleys are adapted to run along a rope f<2> secured at o to the stem of the vessel and passed over a guide-pulley s at the stern to a hand-crab on the deck. The rings slide along a similar rope secured to the stern of the vessel. The mats, which are normally kept towards the stern of the ship, are coupled to a cable m which passes over guide-pulleys s<1> to a handcrab at the stern and to a steam or motor winch at the stem, for hauling the mat into the desired position.
Patent GB-1282266-A (GB)
Title: A movable floating boat anchorage
Inventor: ATLAS GERALD DONALD
IPC: E02B3/06
Filed: 1970-02-24
Abstract: 1282266 Floating boat anchorage G D ATLAS 24 Feb 1970 8933/70 Heading B7A [Also in Divisions E1 and E2] A floating anchorage for a multiplicity of boats comprises a plurality of modules 15 having corresponding inner end portions 19 each of which has a planar surface at its innermost end. Two diverging side walls 24 extend from the planar surface to a plane parallel to it and two converging side walls 20 extend from this plane. Outer end portions 18 of the modules are rectangular in plan view and extend outwardly from the converging side walls 20. The modules are secured together in a predetermined pattern with corresponding side walls in side-by-side abutment.
Patent GB-394097-A (GB)
Title: Improvements in piezo-electric oscillators or resonators of tourmaline
IPC: H03H9/19
Filed: 1932-03-29
Abstract: 394,097. Piezo - electric crystals. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany.-(Assignees of Straubel, H. ; 10, Botzstrasse, Jena, Germany.) March 29, 1932, No. 8952. Convention date, April 1, 1931. Drawings to Specification. [Class 40 (v).] A piezo-electric crystal for short-wave transmitters and receivers comprises a cylindrical tourmaline disc whose axis is at most 0À25 mm. in length and is parallel to the optic axis or inclined thereto at an angle not exceeding 15‹.
Patent GB-447795-A (GB)
Title: Improvements in and relating to apparatus for playing ball games
IPC: A63B43/02
Filed: 1935-03-22
Abstract: 447,795. Toy balls; slings. SCOTTON, H. D., 80, Addington Mansions, Highbury Grange, London. March 22, 1935, No. 9057. [Classes 132 (ii) and 132 (iii)] A tail or length 1 of fabric or other flexible material has at one end a pocket 2 to receive a ball 3, there being means (cords 18, 19) to retain the ball in the pocket during flight. The ball may be permanently retained by sewing or by adhesive. The sling 1 is a tapered sleeve coloured red, white, and blue at 14, 15, 16 respectively. A whistle or siren 8 may be mounted in an axial channel 7 in the ball, the sleeve 1 acting as a " wind sock " to retard the flight. The ball may be slung by the sleeve 1 or by a cord 11 which is attached to, or forms part of, a cord 10 housed in a peripheral groove 9 moulded in the rubber ball. The ball may be a hollow sphere containing pellets and the whole device may be a simulacrum of a bird, fish or animal.
Patent GB-912951-A (GB)
Title: New cyclopentanophenanthrene derivatives and process for the production thereof
IPC: C07J71/00
Filed: 1959-03-16
Abstract: The invention comprises 10b -hydroxy steroids of the general formula:-  <FORM:0912951/IV (b)/1> (wherein R is hydrogen, or a lower alkyl, alkenyl or alkinyl group p  containing less than seven carbon atoms, R1 is hydrogen or a hydrocarbon carboxylic acyl group (which may be substituted, e.g. by halo or methoxy) of less than 13 carbon atoms when R is hydrogen, or hydrogen only when R is other than hydrogen, and X is fluorine, chlorine or bromine), also certain intermediates of the general formula:-  <FORM:0912951/IV (b)/2> (wherein R2 is lower alkyl or lower alkinyl of less than 7 carbon atoms), together with a process for their preparation by reacting a D 5(10)-estren-17b -ol-3-one estren-17b -ol-3 with a peracid to form the corresponding 5b ,10b -oxido compound and then treating this with a hydrogen halide or boron trifluoride.  Detailed examples illustrate the invention.
Patent GB-541377-A (GB)
Title: Improvements in or relating to injection moulding machines for thermo-plastic materials
IPC: B29C45/70
Filed: 1940-05-23
Abstract: 541,377. Injection-moulding machines. DANIELS, Ltd., T. H. & J., DANIELS, J. L., and RUDELHOFF, A. O. May 23, 1940, No. 9138. [Class 87 (ii)] The manually-operated toggle mechanism 18 for opening and closing the mould halves 16, 17 is supplemented by power-operated toggle mechanism comprising a pneumatic or other cylinder 34 within which slides a plunger 36 integral with or connected to a rod 37 supported in bearings 38. The plunger 36 carries a pin 48 on which are pivoted links 47 pivotally connected by pins 48b to links 50 pivoted at their other ends on a stationary crosspiece 35. Also pivotally connected to the pins 48b are links 47a pivotally connected to slides 18a passing through the member 35 and pivotally connected to the manually-operated toggle mechanism 18. In operation, the mechanism 18 is actuated to close the mould halves, and air or other fluid is admitted to the cylinder 34, whereupon the plunger 36 moves to the left and the links 47a to the right. When the air &c. is released from the cylinder, a spring 45 returns the plunger 36 and hence retracts the links 47a.
Patent GB-583531-A (GB)
Title: Improvements in and relating to the production of thallium sulphide photoconductive cells
IPC: H01B1/10
Filed: 1944-05-13
Abstract: 583,531. Light - sensitive cells. KICINSKI, F., and WRIGHT, C. S. May 13, 1944, No. 9223. Drawings to Specification. [Class 40 (iii)] The sulphide material employed in a thallium sulphide photo-conductive cell contains silver in amount of the order of two atomic per cent and initially has sulphur in excess of the order of two atomic per cent, the material being heated in the presence of oxygen. The thallium sulphide may be precipitated by hydrogen sulphide from the nitrate solution to which silver nitrate has been added. The precipitate is baked to remove excess sulphur and then introduced into an evacuated bulb which has been baked without and then with hydrogen in it. The cell is allowed to cool and evacuated and the sulphide evaporated onto interdigital grids of graphite constituting the'cell electrodes. The cell is evacuated and baked with hydrogen at 300‹ C. and cooled to 100‹ C. and evacuated and then cooled to air temperature. Oxygen may then be admitted and the cell left for manyhours, followed by a baking and reevacuation and a treatment with mercury vapour as described in Specification 580,550. Further oxygen and mercury treatments may be given to obtain stability. It is stated in the Provisional Specification that if the sulphide has two atomic per cent excess thallium, treatment with oxygen at room temperature and a baking with hydrogen are necessary after the deposition of the layer on the electrodes and before the successive heatings with oxygen.
Patent GB-778635-A (GB)
Title: Improvements in or relating to electric control circuits, incorporating semiconductor devices
IPC: G05F1/445
Filed: 1955-03-30
Abstract: 778,635. Rectifying; control systems for consumption apparatus. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 30, 1955 [April 5, 1954], No. 9248/55. Classes 38 (2) and 38 (4). D.C. (Fig. 1) or A.C. (Fig. 2) is supplied to a load from an A.C. source through one or more controllable transistors. In Fig. 1 the load 104, the secondary winding of supply transformer 101 and a selenium or silicon rectifier 106 which relieves the transistor of reverse voltage in the non-conducting half-cycles, are connected in series between the emitter 110 and collector 112 of a P-N-P-type junction transistor 108. During the half-cycles when the transistor is to be rendered conducting the base electrode 114 is made negative with respect to emitter 110 while remaining positive to collector 112 by a pulse derived from supply source 100 and made rectangular by a circuit 120. The potential of the base electrode is so chosen that the emitter-collector current reaches saturation. The instant at which conduction begins is controlled by a variable resistor 126 in a phasechange circuit which also includes capacitor 124 and the two halves of the secondary winding 130 of transformer 128. Fig. 2 shows two transistors 208, 217 of the N-P-N- and P-N-P-types respectively, connected so as to supply controllable A.C. to a load 204 from A.C. terminals 202, 203. The control pulses are supplied from terminals 216, 218 between base electrodes and emitters of the transistors, being effective in the two transistors respectively in alternate half-cycles. In a modification the load is supplied with A.C. through two P-N-P transistors having their base-collector circuits in series with each other and the load, the control pulses being applied between the base and emitter electrodes.
Patent GB-477597-A (GB)
Title: Machine for manufacturing reproductions and copies with arc lamps
IPC: G03B27/16
Filed: 1936-03-30
Abstract: 477,597. Lamp globes. KOERTING & MATHIESEN AKT.-GES. March 30, 1936, Nos. 9327 and 9328. Void. Convention dates, March 30, 1935 and Nov. 15, 1935. Drawings to Specification. [Class 75 (ii)] [Also in Group XX] An arc lamp for use in photographic printing is enclosed in a globe of opal glass, of which the density decreases from the parts directed towards the centre of the reproduction surface to the parts directed towards the margin of the reproduction surface.
Patent GB-1382911-A (GB)
Title: Plant culture method and product
IPC: A01H4/00
Filed: 1972-02-29
Abstract: 1382911 Pineapple tissue culture &c. DEL MONTE CORP 29 Feb 1972 9374/72 Heading C6F A pineapple plant culture is produced by removing meristem tissue from a donor plant, incising the meristem tissue and placing it in an aqueous nutrient medium to induce the growth of bud clusters therefrom, then maintaining the bud clusters in an aqueous nutrient medium for a sufficient time to probiferate the bud clusters, without substantial differentiation into plantlets. The proliferated bud clusters may be stored in a container bank with sufficient aqueous nutrient medium to substantially cover the bud clusters, the medium and upper portions of the bud clusters being removed periodically and sufficient new medium added to again cover the remaining bud clusters. The medium may include chelated ferrous ion/to inhibit differentiation and polyvinyl pyrrolidone which will absorb toxic phenolic compounds and browning substances. Light should be low in infrared radiation since this accentuates shoot formation. Differentiation of the tissue into plantlets proceeds spontaneously when a substantial upper surface portion of the proliferated bud cluster mass is exposed to the atmosphere while a lower surface of the bud cluster mass is in contact with aqueous nutrient medium, e.g. in the form of an aqueous agar gel.