baber/WOPTO huggingface dataset:
Patent GB-120640-A (GB)
Title: Improvements in and connected with Drills or Percussive Tools for Boring in Rock or other Material.
Inventor: LINDLEY WALTER
IPC: B25D17/08
Filed: 1917-11-26
Abstract: 120,640. Lindley, W. Nov. 26, 1917. Percussive drills.-A percussive rock drill comprises a bit and a collared shank secured in opposite ends of a tubular steel, ports and means for attaching a fluid-supply ring being provided in advance of the collar. In the form shown, the bit a and collared shank c are secured to the steel b by threaded joints, and the bit has a chisel edge to both sides of which the air or water passage a<4> opens. On the steel is threaded a sleeve f secured by a lock-nut g and on the sleeve an air or watersupply ring hx is held by nuts g', g<x>. Annular recesses f<3> on the ring h<x> are engaged by projections on the sleeves and nuts to prevent leakage and the ring is held against rotation by a stud l. In a modification, the sleeve f, ring h<x>, and locknuts g, g<1>, g<x>, reversed in position relatively to the bit, are mounted on a threaded extension of the shank c. In further modifications, the locknut g is omitted and the nuts g<1>, g<x> are threaded on to the steel b or shank c. A cotter or a screw e may be provided to prevent detachment of the shank. The Provisional Specification states also that the shank may be integral with the steel, and that several steels of different lengths may be provided for one bit.
Patent GB-650131-A (GB)
Title: A method of rendering materials water-repellent
IPC: C07F7/18
Filed: 1948-06-29
Abstract: Hydrophilic base materials are given a water-repellent coating by contact with the vapour of monomethyldiethoxysilane.  The moisture resistance may be improved by subsequent heating up to 300 DEG  C. and below the decomposition or melting temperature of the treated material.  The materials treated may be ceramics, asbestos, metals, synthetic plastics, and inorganic crystalline materials such as sodium chloride.ALSO:Food materials are given a water-repellent coating by contact with the vapour of monomethyldiethoxy-silane.  The moisture resistance may be improved by subsequent heating up to 300 DEG C and below the decomposition or melting temperature of the food material.  The food material may be salt, sugar, toasted cereals, and biscuits.  The treated sugar may be used for coating chewing gum, marshmallows, or candy.
Patent GB-796041-A (GB)
Title: Polyalkylene ether-polyurethane polymer and elastomeric products obtainable therefrom
IPC: C08J9/02
Filed: 1954-06-15
Abstract: Elastomeric polyurethanes are obtained by reacting under substantially anhydrous conditions a polyalkylene ether glycol of molecular weight at least 750 with a molar excess of an organic diisocyanate, and reacting the product with a chain-extending agent (other than water or a glycol) having a plurality of active hydrogen atoms.  The polyalkylene glycol may be polyethylene-, polypropylene-, poly-1,2-dimethylethylene- or polydecamethylene-glycol or polydioxolane.  The diisocyanate may be aliphatic, cycloaliphatic or aromatic, many being specified. The chain-extending agent may be hydrogen sulphide or an organic compound (other than a glycol) containing a plurality of active hydrogen atoms in the form of -OH, -SH, -NH-, -NH2, -COOH, -CONH2, -CONHR (where R is an organic radical), -SO2OH, -SO2NH2 or -CSNH2 groups. Specified organic compounds are adipic acid, succinic acid, beta-hydromuconic acid, terephthalic acid, 1,2-ethane-disulphonic acid, hydroquinone, 4 - (beta - hydroxyethoxy)-phenol, 1,2-ethanedithiol, m-phenylenediamine, propylenediamine, ethylenediamine, 2,4-tolylenediamine, bis - (4 - aminophenyl)-methane, succinamide, adipamide, dithiooxamide, 1,3 - propanedisulphonamide, 1,4-butanedisulphonamide, 1,4 - cyclohexanedisulphonamide, monoethanolamine, p - aminophenol, 4 - aminobenzamide, sulphanilamide, aminopropionic acid, 4-aminobenzoic acid, 4-hydroxybenzoic acid or beta-hydroxypropionic acid.  The molar ratio of diisocyanate to polyglycol is preferably 1.1 : to 12:1 and that of chain-extending agent to polyglycol is preferably 9:1 to 1:9. If all of the isocyanate groups have been used up by reaction with the polyglycol and the chain-extending agent, the product is cured by heating with additional di- or tri-isocyanate or other curing agent, otherwise the product may be cured by heating alone.  An uncured elastomer containing free isocyanate groups may be stabilized by addition of a nitrogen base (e.g. pyridine or piperidine).  Reaction between the polyglycol and the diisocyanate may be controlled by addition of an acid reacting compound (see Specification 796,044), or may be accelerated by addition of a salt of a phosphorus or tertiary nitrogen base (e.g. pyridine).  The elastomers may be compounded with carbon black, clay, silica, talc, zinc oxide, magnesium oxide, calcium carbonate, magnesium carbonate, titanium dioxide, plasticizers or colouring agents.  Examples disclose elastomers obtained from polytetramethylene or polyethylene glycol which may contain a little water, 2,4-tolylene or diisocyanate and one of the cross-linking agents specified above which are cured either with the dimer of 2,4-tolylene diisocyanate (with or without magnesium oxide) or without the addition of further isocyanate. Specification 791,852 also is referred to.
Patent GB-309439-A (GB)
Title: Improvements in or relating to steam generator furnaces
IPC: F22B37/20
Filed: 1928-06-18
Abstract: 309,439. Foster Wheeler, Ltd., (Assignees of Keenan, W. F., and Eddy, H. F.). April 10, 1928, [Convention date]. Walls; cooling.-In a boiler furnace comprising thin walled superheater tube elements spaced apart from each other and from the combustion chamber wall in such a manner that the tube elements can absorb radiant heat on all sides while avoiding the formation of slag bridges between the tubes and between the tubes and wall, the tubes are out-turned at their ends to connect with external headers and are anchored intermediate their ends to the combustion chamber walls. As shown in Fig. 1, the superheater tubes are arranged parallel to the wall A and their ends are bent at right-angles and pass through packed openings in the wall to connect with upper and lower headers C, D. The weight of the elements is taken by blocks F. In the modification shown in Figs. 3 and 5, water tubes G are arranged between the superheater tubes B and seated in saddle blocks H, the spaces between which are sealed by battens h. A bracket A<10> supports the upper headers G<1>, C and a bracket A<11> supports the lower headers G<2>, D through a resilient connection. Fig. 6 shows a further modification wherein the steam from the superheater elements I in contact with the furnace wall is led through nipple,c I<1> into a header JA and thence to the headers of the superheater tubes B. Fig. 9 shows one form of intermediate anchoring device comprising bolts L secured to lugs B<5> welded to the tubes and secured to channel bars M external to the furnace wall. Various other arrangements of the tubes are described and illustrated. Reference has been directed by the Comptroller to Specifications 231,488 and 275,056.
Patent GB-1263297-A (GB)
Title: Digital focal length modulator
IPC: G02B3/00
Filed: 1969-04-03
Abstract: 1,263,297. Light modulation. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 3 April, 1969 [6 April, 1968], No. 17580/69. Heading H4F. [Also in Division G2] A digital focal length modulator comprises a plurality of birefringent lenses and electrooptical polarization switches e.g. Kerr cells disposed alternately along the optical axis, the effective curvatures, i.e. the sum of the reciprocals of the radii of curvature of the two outer faces of each lens (convex surfaces being positive and concave, negative), of successive lenses being doubled, and is characterized in that the lens having the greatest effective curvature numerically has a curvature of opposite sign to those of the remaining lenses, to reduce the effect of the temperature acting via the refractive index of the ambient medium e.g. nitrobenzene, on the angular aperture of a polarized light beam passing therethrough. An isotropic lens having an effective curvature equal to that of the lowest powered birefringent lens and a refractive index equal to the mean refractive index of the birefringent material may be placed in front of the first lens. In the latter stages of the modulator, where thin lens laws do not apply, it must be ensured that the isotropic complementary lenses of the surrounding medium together give a negligible effective curvature. Thus in Fig. 5 (not shown) the final stage is shown as comprising a birefringent lens formed of a piano-convex and a complementary plano-concave element.
Patent GB-316129-A (GB)
Title: Improvements in or relating to the manufacture of refractory articles
IPC: C04B35/18
Filed: 1929-06-07
Abstract: 316,129. Hartford-Empire Co., (Assignees of Willets, P. G.). July 23, 1928, [Convention date]. Refractory substances.-A refractory body for use in contact with molten glass is made from a starting mixture containing, by analysis, from 35 to 88 per cent of alumina, from 11 to 63 per cent of silica, not more than 1.5 per cent of iron, magnesium and alkali metal oxides, and sufficient fluxes, e.g. alkaline earth oxides to cause the transformation of the materials, when they are heated to below the fusion point, into mullite or corundum crystals and a glassy matrix. In an example, a body of high silica content is made by intimately mixing 90 parts of washed Georgian Klondike white kaolin and 10 parts of Arkansas clay, both in a fine state of sub-division, burning to form a grog which is broken down to pass a U.S. standard No. 24 screen: 17 parts of this grog is then mixed with 20 parts of a binder formed of 65 parts of the kaolin, 5 parts of the Arkansas clay and 30 parts of finely ground potter's flint; the mixture is moulded at a pressure of 5 tons to the sq. inch and fired at about 2850‹ F. The final product comprises two phases only, mullite crystals and glass, and has a low porosity. In another example, a body of high alumina content is made of a grog, formed of 96 parts of raw aluminium mono hydrate and 4¢ parts of raw Arkansas clay, and a binder of the same composition fired at a temperature of about 3200‹ F. Other compositions are described. Specification 315,856 is referred to.
Patent GB-998043-A (GB)
Title: Circular brush
IPC: A46B9/06
Filed: 1962-05-08
Abstract: 998,043. Cylindrical brush. R. HATTORI. May 8, 1962 [May 19, 1961 (2)], No. 17636/62. Heading A4K. A brush comprises a cylindrical core 1 with clusters of natural fibre bristles 2 affixed to its surface and at least one row of clusters of thin metal wire bristles 3 or at least one row of clusters of a mixture of natural fibre bristles and metal wire bristles, the wire bristles being of the same size as the natural fibre bristles. The rows of metal or metal and fibre bristles may be disposed parallel to, or helically with respect to the rotational axis of the core 1.
Patent GB-1331856-A (GB)
Title: Process for preparing epoxides and products produced thereby
IPC: C07D303/32
Filed: 1971-05-27
Abstract: 1331856 Epoxides SNAM PROGETTI SpA 27 May 1971 [17 June 1970] 17695/71 Heading C2C A process for the production of an epoxide comprises reacting at least one carbonyl compound of the formula wherein R and R<SP>1</SP> are hydrogen atoms or optionally substituted and / or unsaturated (C 1 -C 12 ) hydrocarbon radicals, or together with the -CO.CH 2  group form an optionally substituted and/or unsaturated ring, with a divalent copper compound of the formula wherein R<SP>2</SP> is a (C 1 -C 20 ) hydrocarbon radical, X is an anion, L is a co-ordinating base and n is 0 or an integer from 1 to 4. Preferably the carbonyl compound is a ketone, aldehyde, diketone or keto-aldehyde, the anion X is a halide, nitrile, acetate, enolate or nitrate, and the co-ordinating base L is phenanthroline, dipyridyl, pyridine, dimethylsulphoxide, dimethylformamide, a phosphine, an arsine, a stilbine or imidazole. The reaction is preferably effected in the presence of a solvent or diluent at a pressure of from 1 to 20 atmospheres and a temperature of from ambient to 180‹ C.
Patent GB-499724-A (GB)
Title: Improvements in or relating to document or like filing devices
IPC: B42F15/00
Filed: 1938-06-15
Abstract: 499,724. Filing papers &c. RIJMENAM, H. VAN, (trading as RIJMENAM, H. VAN, [Firm of]). June 15, 1938, No. 17758. Convention date, June 19, 1937. [Class 146 (i)] In a device for filing documents in vertical position consisting of a number of suspension bars or carriers for folders or the like 6 which are to be detachably supported thereby, the bars being freely and slidably mounted on two parallel horizontal supports, such as the top edges of a filing drawer, each bar is provided with a depending flange 4 on which is or are arranged one or more hooks 5 from which a holder may be detachably suspended. The folder 6 has one side perforated for engaging the hooks, and the other side is held in the closed position by means of a snap-fastener device 8. The bar for each folder is constructed as an open-topped gutter 9 into which a reference strip 10 and a transparent covering strip 11 may be inserted.
Patent GB-1138873-A (GB)
Title: [(1-alkenylsulfonyl)-phenoxy] alkanoic acids and derivatives thereof
IPC: A61K31/185
Filed: 1966-04-22
Abstract: 1,138,873. [(1 - Alkenylsulphonyl) - phenoxy] - alkanoic acids. MERCK & CO. Inc. 22 April, 1966 [29 April, 1965], No. 17763/66. Heading C2C. Novel [(1 - alkenylsulphonyl) - phenoxy] - alkanoic acids of the general formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are each hydrogen or alkyl; each X is a halogen, alkyl or alkoxy, with the possibility that when substituted on adjacent carbon atoms of the benzene nucleus two X radicals may be combined to form a hydrocarbylene chain containing four carbon atoms between its points of attachment; m is 0 or an integer of from 1 to 4 and n is an integer of from 1 to 4; and their non-toxic, pharmacologically acceptable esters, amides, metal salts and salts with organic bases; other than those compounds described and claimed in Specification 1,040,555, are prepared by oxidation of a mercaptan of the general formula wherein R is alkyl, or by treating an ester of the general formula wherein R<SP>5</SP> is alkyl and X<SP>1</SP> is a halogen, with a dehydrohalogenating agent and, if desired, hydrolysing the product so formed. Pharmaceutical compositions having diuretic and saluretic activity comprise as active ingredient a [(1-alkenylsulphonyl)-phenoxy]-alkanoic acid of the first general formula above or a non-toxic pharmacologically acceptable ester, amide or metal salt thereof or salt thereof with an organic base (other than a compound described and claimed in U.K. Specification 1,040,555) and a pharmaceutical carrier. Mercaptans of the second general formula above are prepared by treatment of an isomeric mercaptan of the general formula wherein R<SP>4</SP> is hydrogen or a hydrocarbyl radical, with a base, followed by an acid. Methyl (3 - chloro - 4 - allylmercaptophenoxy)- acetate is prepared by reaction of methyl (3- chloro-4-mercaptophenoxy)-acetate with allyl bromide. Methyl [3 - chloro - 4 - (2 - chlorobutylmercapto)-phenoxy]-acetate is prepared by reaction of methyl (3-chloro-4-mercaptophenoxy)- acetate with 2-bromobutanol and thionyl chloride. Methyl (3-chloro-4-methallylmercaptophenoxy)-acetate is prepared by reaction of methyl (3-chloro-4-mercaptophenoxy)-acetate with methallyl chloride.
Patent GB-1421827-A (GB)
Title: Demodulator circuit for demodulating an amplitude-modulated pulse signal
IPC: H03K9/02
Filed: 1973-04-13
Abstract: 1421827 Televisions; pulse modulation circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 April 1973 [18 April 1972] 17880/73 Headings H4L and H4F Sound carrying a.m. pulses 210, 218 in the line fly-back period of a TV signal are demodulated by a combination of gates 29, 19 and a ringing circuit 25, which obviate the need for clamping the signal. Interference introduced by such a clamping action is thus avoided. Gate 29 passes a portion 227 of the input signal 208, 210, between times t 2  and t 4 . The sound pulse component thereof 230 makes circuit 25 ring 234, and gate 19 is turned on by a signal 237 at t 4  to sample the maximum of the ringing voltage which is then stored at C11. The unwanted component 228 of the pulse signal, present because no clamping is effected, produces a ringing voltage 232 and this is arranged to be zero at t 4  so as not to affect the sound demodulating process, by making the time t 2 -t 4  equal to half a ringing period. The ringing circuit may be damped outside the operative time periods (by T83, Fig. 3, not shown) unless the ringing period happens to give zero signals at the relevant time period of the succeeding line fly-back period, t 7  &c. Gate 29 is a transistor (65) whose current input is derived (by T45) from the video input 1; and another transistor (69) keeps the D.C. in the ringing circuit constant by turning on when the first (65) turns off. The output gate 19 is a F.E.T. (53) and the gating pulses are derived (at 39) from the TV sync. signal, separated (at 93) to drive a monostable (99).
Patent GB-1099495-A (GB)
Title: Improvements in or relating to clock pulse distribution
Inventor: MITCHELL ROY WILLIAM
IPC: H03K5/15
Filed: 1964-04-29
Abstract: 1,099,495. Semi-conductor oscillator circuits. INTERNATIONAL COMPUTERS & TABULATORS Ltd. April 12, 1965 [April 29, 1964], No. 17884/64. Heading H3T. In a timing system, particularly for distributing clock pulses in a high speed computer, a master signal generator is coupled via a transmission line to at least one slave generator the length of the transmission line being such that any signals reflected from the remote end arrive at the master generator in phase with its output. As shown in Fig. 2, 100 Mc/s. pulses from a master oscillator 9 are fed via matched transmission lines 12, 13 to synchronize slave oscillators 10, 11, 15. A further transmission line 20 which provides a delay of an appropriate integral multiple of half the period of the master oscillator 9 provides load sharing. The lines 12, 13 maybe coaxial or strip lines and may have different lengths so that slave oscillators 10, 11 provide two-phase outputs. The oscillators 9, 10, 11 may be transistorized blocking oscillators having common input/output transformers or (as in Fig. 1, not shown) may consist of a tunnel diode in series with inductance and resistance and synchronized by a crystal oscillator connected across the tunnel diode, the circuit providing a triangular current waveform and pulsed voltage output.
Patent GB-413863-A (GB)
Title: An improved process for making ammonium sulphate nitrate
IPC: C05C13/00
Filed: 1933-06-23
Abstract: In the production of ammonium sulphatenitrate by neutralization of the mixed acids with ammonia under a pressure such that evaporation of the water cannot occur, this evaporation being effected in a separate part of the apparatus at a lower pressure, as described in the parent Specification, the entire process is carried out under reduced pressure to obtain a low reaction temperature.  The neutralization may be effected under a pressure of 180--200 m.m., for example, and the evaporation at 30--40 m.m.
Patent GB-334933-A (GB)
Title: Improvements in or relating to indicator devices
IPC: G09F7/00
Filed: 1929-06-11
Abstract: 334,933. Carvalho, I. R. de. June 11, 1929. Selective signalling systems.-An electric indicator system comprises a number of signalling boxes 1, Fig. 1, provided with manually-operated switches adapted to prepare the circuits of lamps 6 contained in an indicator box 3 which is also provided with press-buttons 7 corresponding to the signalling boxes. The lamps 6 are arranged behind indications printed on paper pasted on the inner surface of translucent panels. The arrangement is such that when a button 7 is pressed a lamp 6 is lit in accordance with the setting of the switch in the box corresponding to the particular button pressed. The signalling boxes may have each a lamp 13 and a buzzer 15 adapted to be operated when the button 7 is pressed. In a modification the signalling boxes and indicator box are combined in one case. Reference has been directed by the Comptroller to Specification 20522/97.
Patent GB-740780-A (GB)
Title: Improvements in electro-magnetically actuated indicators
IPC: G08B5/22
Filed: 1953-06-29
Abstract: 740,780. Electric indicators. DOWTY EQUIPMENT, Ltd., and SNELL, M. S. June 29, 1954 [June 29, 1953]. No. 17985/53. Class 40(1) An electric twoposition indicator comprising a moulded spherical eyeball with a moulded-in iron armature which is attracted by an electro - magnet against a spring is characterized in that the armature is eccentrically mounted so that the magnetic attraction force increases as the eyeball is rotated from one position to the other. As shown (Figs. 1. 2), the eyeball 31 consists of an inner moulding 37 comprising two laterally displaced hemispheres supporting an iron armature 39, and a similarly shaped brass counter weight 41, the whole being surrounded by a further moulding 45 to present a completely spherical external surface. The completed eyeball is mounted on a shaft 32 under a window 23 and above an electromagnet consisting of a coil 12 with central core 13. Thus energization of the coil 12 attracts the armature 39 against a spring 47 with a force which increases as the eyeball rotates because of the eccentricity of the armature 39 relative to the shaft 32, and which is enhanced by making the width of the armature increase to that part which is nearest the surface of the ball. Movement of the eyeball is restricted by a stop-pin 43 projecting from the eyeball 31 to butt against a dished washer 25 in the extreme positions. The alternatively exposed portions of the eyeball are differentiated by e.g. different colours.
Patent GB-1189146-A (GB)
Title: Improvements in or relating to Fault Recording Arrangements for Power Transmission or Distribution Lines
IPC: G11B5/008
Filed: 1967-04-19
Abstract: 1,189,146. Recording and playback. SANGAMO ELECTRIC CO. 19 April, 1967 [6 May, 1966], No. 18105/67. Heading G5R. An electrical circuit is continuously monitored for the existence of a particular condition, e.g. a fault on power transmission or distribution lines, and a signal corresponding to any such condition detected is recorded on one or other tape of a recording apparatus in which two tape transport mechanisms control each other so that one is rewound while the other is operative, the rewinding being halted before reaching the location of any such recording. If a recording is made less than a predetermined distance from the end of a tape, that tape is not rewound and becomes inoperative. A coded signal representing the time of occurrence is recorded simultaneously with a circuit-condition signal, on another track of the same tape. For controlling the two tape transport mechanisms, each includes a pivoted arm 260, Fig. 6, which senses the amount of tape left on the supply reel. Moving with the sensor arm 260 is a pivoted cam F c , which operates the changeover switch MS2 when the supply reel is nearly empty (Fig. 9). Detection of a circuit condition to be recorded causes brief energization of a solenoid FSS which releases a second pivoted cam R c  and then holds it in the position engaging a lug 271 on cam F c  to which it has been swung by a spring 266. If there is less than five minutes run of tape left on the supply reel, cam R c  operates a switch MS3 to prevent subsequent rewinding of the tape (Fig. 7); otherwise (Fig. 8) rewinding follows in due course and is stopped when cam F c  on its return journey operates a switch MS1 carried by cam R c  which has remained held by solenoid plunger 273 in its position indicative of the location of the most recent recording. The two tape transport mechanisms have a common capstan (34, Figs. 1 and 2).