baber/WOPTO huggingface dataset:
Patent GB-828524-A (GB)
Title: Process for the preparation of polycarbonates
Filed: 1957-09-26
Abstract: Polycarbonates of molecular weight 700-5000 are made by heating at over 100 DEG  C. at superatmospheric pressure a mixture of a cyclic glycol carbonate, an aliphatic or cycloaliphatic 1 : 2-epoxide, and an organic compound having at least 2 active hydrogens in an amount of 0.01-0.20 mols. per mol. of cyclic glycol carbonate in the presence of a basic substance as a catalyst.  Specified glycol carbonates are ethylene, propylene, 1,2-butylene, 2,3-butylene, vinyl ethylene, vinylene, methyl vinylene, ethyl vinylene, propyl vinylene and dimethyl vinylene carbonates.  Specified epoxides are ethylene oxide, propylene oxide, butylene oxide and like epoxides containing up to 6 carbon atoms, 1,2-butadiene epoxide, cyclohexene oxide, 4-vinyl cyclohexene oxide, butadiene dioxide and 4-vinyl cyclohexene dioxide.  Specified active hydrogen compounds are ethylene, diethylene, triethylene, propylene and dipropylene glycols; glycerol, trimethylol ethane, trimethylol propane and pentaerythritol; di-hexamethylene diamines; piperazine; 1,2-ethanedithiol; ethanolamine and diethanolamine; and oxalic acid.  The compounds may be formed in situ, e.g. by adding water which reacts with the epoxide to form a dihydric alcohol. Specified catalysts are sodium, potassium, magnesium and calcium carbonates; sodium, potassium and calcium hydroxides; sodium bicarbonate; and trimethylamine, triethylamine, tripropylamine, N-methylmorpholine and pyridine. Reaction may be effected by a batch or continuous process.  The polycarbonates contain terminal hydroxyl groups and may be reacted with polycarboxylic acids (e.g. phthalic, adipic, succinic, maleic or fumaric acids) to form alkyd resins.  They may also be reacted with polyisocyanates (e.g. toluene diisocyanate) to form polyurethane rubbers or with diisocyanates, water and, if desired, glycerol to form polyurethane foams (see Group V).  Examples describe the making of polycarbonates from ethylene oxide and ethylene carbonate.ALSO:Polyurethane foams are obtained by reacting a polyisocyanate with a polycarbonate resin in the presence of a foaming agent, e.g. water; the polycarbonate having been obtained by heating a mixture of a cyclic glycol carbonate, an aliphatic or cycloaliphatic 1 : 2-epoxide and an organic compound having at least 2 active hydrogen atoms in an amount of 0,01-0,20 moles per mole of glycol carbonate (see Group IV(a)).  The resulting foams are elastic and serve as crash pads or upholstery pillows but if the foaming reaction is effected in the presence of a cross-linking agent, e.g. glycerol, rigid foams result suitable for use as insulating material in aircraft and for protecting heating and cooling ducts.
Patent GB-286009-A (GB)
Title: Improvements relating to wind-screen wipers
IPC: B60S1/30
Filed: 1926-11-29
Abstract: 286,009. Brook, I. Nov. 29, 1926. Windows and the like, cleaning.-In a windscreen cleaner such as described in Specification 241,381, wherein liquid from a container is supplied to the wiping element to prevent the adhesion of moisture to the screen, the outlet from the.container is so arranged that when the cleaner is moved from the horizontal inoperative position liquid will flow from the container, to be distributed over the screen by the wiping element. In the construction shown in Fig. 1, a container a is formed with an aperture communicating by a tube c or c' with the squeegee g. Liquid will not flow until the cleaner has moved downwardly from its inoperative position. The container is provided with a cover b and may have a valve to close the outlet from the tube c when the apparatus is not required for use. In the construction shown in Fig. 3, a container a mounted on the windscreen is adapted to supply liquid to squeegees on both sides of the screen by means of tubes o, o<1>, the outlets of which are adapted to be closed by valves p when the wipers are in the horizontal position shown.
Patent GB-1431577-A (GB)
Title: Train
IPC: B61D3/12
Filed: 1973-06-26
Abstract: 1431577 Tipping wagons ALLMANNA SVENSKA ELEKTRISKA AB 26 June 1973 [26 June 1972] 30226/73 Heading B8E [Also in Division B7] A train formed from hopper bodies supported at their adjacent ends on bogies have bottom openings for one or more discharge hatches 35 provided with support wheels 42 which engage helical tracks 41 at an unloading station to guide the hatches between open and closed positions, the bodies at the station being supported by bars along their longitudinal sides.
Patent GB-174706-A (GB)
Title: Improvements relating to locks for miners' safety lamps and for similar purposes
Filed: 1920-10-27
Abstract: 174,706. Thor Electric Safety Lamp Co., Ltd., and Stretton, T. Oct. 27, 1920. Miners' safety lamps; reservoirs, attaching to lanterns. -A lock for miners' safety lamps &c. which is inaccessible from without the lamp comprises a magnetically-operated locking-bolt g, carried by the lamp top b, adapted to engage a recess f formed in the upper part d of the cell container or base part a and open at the inside and at the top.
Patent GB-352839-A (GB)
Title: Fasteners for collars for personal wear
IPC: A41B3/08
Filed: 1930-10-10
Abstract: 352,839. Fasteners for soft collars. HILL, L. A., 201:., Kalorama Road, Washington, U.S.A. Oct. 10, 1930, No. 30421. [Class 141.] A fastener for the flaps of soft collars comprises front and back bars 1, 3 pivoted together at 5. The front bar has at its ends convex projections 2 which co-operate with the concave inner faces of hook-like projections 6 on the back bar. To fasten the collar, its flaps are slipped between the projections 2, 6, the bars 1, 3 being sufficiently resilient to allow this. To disengage the fastener, the front bar 1 is turned about the pivot 5. In a modiication, the projections 2 are concave, and the projections 6 convex.
Patent GB-923468-A (GB)
Title: A process for improving and dyeing textile materials consisting of synthetic polyamides
IPC: D06M13/152
Filed: 1961-08-23
Abstract: Textile materials of polyamide especially ladies' stockings are dyed or treated using an aqueous alkaline bath containing a phenol as swelling agent and an aliphatic anion-active compound. Suitable dyes are 2:1-metal complex, acid, substantive and especially disperse dyestuffs.  The anion-active compound may be an alkali metal salt of a higher fatty acid such as is found in soft or grain soaps, sulphonated fatty acids and fatty alcohol sulphonates.  Specified phenols are phenol, pyrocatechol and resorcinol.  The preferred pH is 7-8 which is attained either by the soap itself or by the addition of sodium hydroxide or carbonate.  Examples are given.
Patent GB-723400-A (GB)
Title: Pipe joints
IPC: F16L19/08
Filed: 1952-12-01
Abstract: 723,400. Pipe joints. LEVIT, A. Dec. 1, 1952. No. 30439/52. Class 99 (1). A stuffing-box type joint has a sealing ring 10 enclosed in a recess 9 in a securing ring 7, the recess being bounded by cutting edges 11 which closely surround the pipe 3 before the joint is tightened. The ring 7 has a conical surface 12 complementary to a surface 5 in the socket member 1 against which it is compressed. A packing washer 13 may be located between ring 7 and surface 5. The ring 7 may be of V-section, the arms of the V being at right. angles, and the end faces of the arms being perpendicular to their side faces 12. The base of the recess 9 may be arcuate.
Patent GB-441421-A (GB)
Title: Improvements in or relating to the manufacture and colouration of artificial filaments, films, foils and the like
IPC: D01F1/10
Filed: 1934-10-24
Abstract: Coloured artificial filaments, films, or foils are produced from solutions containing diazotizable amine and a cellulose derivative or other film-forming substance, and thereafter diazotizing the amine and coupling the resulting diazo compound with an azo coupling component.  The diazotizable amine is preferably present in proportions of ,5 to 3 per cent of the weight of the film-forming material, and solution or dispersion thereof may be aided by admixture with a carrier such as soap or a modified oil prior to incorporation in the spinning solution; in addition, suitable solvents are acetone, ethylene dichloride, mixtures thereof with ethyl or methyl alcohol, and ethylene dichloride.  The filaments &c. may also contain effect materials, fire retardants, plasticizers or lubricants.  Suitable diazotizable amines are p-nitranilines, p-nitro-o-anisidine, m-nitro-p-toluidine, m - nitro - o - anisidine, p - chloraniline, a -naphthylamine, benzidine, dianisidine, p-aminobenzene - azo - naphthylamine and amino-azo-benzene.  The filaments &c. containing the diazotizable amine may be passed through a cold bath containing sodium nitrite and hydrochloric acid or through a chamber containing vapours of nitrous and hydrochloric acids, and then developed with a coupling component, e.g. a -naphthylamine, dimethylaniline, m - phenylene diamine, a  - naphthol, b -naphthol, b -oxynaphthoic acid, p-xylidine, b -naphthylamine, aceto-acetic ester, mono-, di- or tri-hydric phenols. The yarn may be diazotized in hank, bobbin or other form in liquid or gaseous media, and subsequently developed.
Patent GB-446504-A (GB)
Title: Improvements in and relating to electrical overhead cable systems
IPC: H02G7/14
Filed: 1934-10-24
Abstract: 446,504. Damping vibrations in cables. BAYERNWERK AKT.-GES., 6, Blutenburgstrasse, Munich, Germany. Oct,. 24, 1934, Nos. 30519 and 30520. Convention dates, Oct. 24, 1933 and June 18, 1934. [Class 36] An electric overhead cable system comprises a cable consisting of an inner part or " core cable " and an outer part or " covering cable " which is concentric or substantially concentre with the " core cable and which is selfsupporting, the " core cable " and " covering cable " having such physical characteristics and/or being so tensioned that the speeds of wave propagation along them are different from one another, and an adequate small free space being left between the " core cable " and the " covering cable when the cable has been installed and tensioned, which will ensure that the mechanical oscillations of the " core cable " and " covering cable " will mutually damp one another by impact losses along the whole cable. The difference in speed of wave propagation may be attained by using different materials such as steel and copper or steel and aluminium and/or by imparting a preliminary tension to the " core cable " before securing the cable to the tensioning clamps. The " covering cable " may be constructed from profile or circular wires and may comprise an " impact tube " of round wires stranded with a small laying length surrounded by wires of smaller diameter stranded with a greater laying length. The " impact tube may be stranded over a hollow mandrel through which the " core cable " passes, the wall thickness of the mandrel corresponding approximately to the desired free space.
Patent GB-1001534-A (GB)
Title: Improvements in or relating to fuel elements
Inventor: PICKMAN DAVID OPENSHAW
IPC: G21C3/12
Filed: 1963-08-01
Abstract: 1,001,534. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY, LONDON. July 29, 1964 [Aug. 1, 1963], No. 30543/63. Heading G6C. An elongate fuel element has a sheath including groups of antibowing lugs, each group being equispaced circumferentially; at least one of the lugs of a group at the end of the sheath has a radially extensible member capable of being reduced in effective radial extent against the action of resilient means tending to extend it. The end lug 5a has a recess containing a spring 11 which bears against an arm 8 pivoted at 9. Extension is limited by a pin 12 carried on the arm 8 fouling a slot 13 in the lug. The fuel element is loaded by a grapple which holds the arm 8 in a withdrawn position until the fuel element is released in its required position in a fuel channel 3; thus the arm 8 and opposite lug 5c bear forcibly against the channel wall 2, to prevent coolant flow induced vibration of the fuel element.
Patent GB-1424158-A (GB)
Title: Process for the production of a-amino-beta-nitroanthraquinones
IPC: C07C225/34
Filed: 1974-07-10
Abstract: 1424158 Preparing α-amino-#<SP>1</SP>-nitroanthraquinones BAYER AG 10 July 1974 [10 July 1973] 30544/74 Heading C4P α- Amino - #<SP>1</SP> - nitroanthraquinones are prepared by reacting at at least 100‹C under superatmospheric pressure an α 1 #<SP>1</SP>-dinitroanthraquinone with ammonia in an ether, an aliphatic, cycloaliphatic or an optionally alkyl-substituted aromatic hydro-carbon, water or a mixture thereof. The molar ratio NH 3 : dinitroanthraquinones is at least 2 : 1 and preferably 10À1 to 40 : 1.
Patent GB-698192-A (GB)
Title: Improvements in and relating to the dyeing of blended yarns, mixture fabrics and thelike
Inventor: BRADSHAW SAMUEL NELSON
IPC: D06P3/82
Filed: 1950-12-15
Abstract: Solid shades are obtained on mixed yarns, fabrics and the like containing carbonized wool and cellulose fibres by dyeing the wool with an acid or neutral wool dye and the cellulose with a direct cotton dye, by the single bath or two-bath method, the dyeing of the cellulose fibres being carried out in the presence of hexamethylenetetramine.  The amount of hexamethylenetetramine used is about 5 per cent by weight of the material being dyed. The wool is not coloured by the direct cotton dyestuff under these conditions. An example is given in which a yarn containing carbonized wool and viscose rayon staple is dyed a solid pink by means of a bath containing Chlorazol Pink BKS, Carbolan Crimson BS, hexamethylenetetramine and Glaubers salt.
Patent GB-1518116-A (GB)
Title: Method of correcting alterations in read out signals and apparatus for implementing the same
IPC: G11B20/06
Filed: 1975-07-22
Abstract: 1518116 Transistor circuits THOMSONBRANDT 22 July 1975 [23 July 1974] 30696/75 Heading H3T An arrangement for detecting changes in a signal in the form of data which is angularly modulated onto a carrier comprises means 3 for converting the signals into a squarewave-form and a monostable circuit 20 triggered with the output from the means 3, the monostable circuit having a relaxation time longer than the mean period of the input signal, the output from the monostable controlling a correction circuit 6. The monostable circuit is normally held in its unstable state, and only reverts to its stable state if the period between pulses is too long. A further monostable 10 may also be included which has a relaxation time such that it is normally switched by the pulses but is held in its unstable state if the pulse rate is too high, thus again allowing monostable 20 to relax to its stable state. The control signal to circuit 6 may be lengthened by including a further monostable (30) and an AND gate (7) between the monostable 20 and the current 6, Fig. 5 (not shown),
Patent GB-600437-A (GB)
Title: Adjustable slip gauges
IPC: G01B3/30
Filed: 1945-11-16
Abstract: 600,437. Slip gauges. COVENTRY ENGINEERING CO., Ltd., and GRINDLAY, R. R. Nov. 16, 1945, No. 30725. [Class 106 (ii)] An adjustable slip gauge comprises two elements 11, 12 with parallel gauging faces 13 and inner faces 15, 16 which are slightly inclined by different amounts, respectively, to the faces 13 and which contact with correspondingly-inclined faces on one or more intervening elements 14, there being one More element altogether than there are pairs of differently inclined surfaces, the inclined faces being prepared to allow wringing together; each pair of elements having releasable locating means to control their sliding adjustments, and the pairs of contacting faces being provided with index markings corresponding to the inclination of these faces, As shown, the inclination of faces 15 is ten times as great as the inclination of faces 16, relative movement of elements 11 and element .14 recording thousandths, and relative movement of elements 12 and 14 recording ten thousandths of an inch. The locating means is similar to that described in Specification 592,105, the element 14 having a channel 17 in its upper and lower faces and spaced holes 18 to receive, respectively, the locating pins 20 and spring-pressed plungers 19.
Patent GB-1151876-A (GB)
Title: Improvements in or relating to Re-Usable Inscription Elements and Typewriter or like Apparatus Using Same.
IPC: B43L1/12
Filed: 1966-07-08
Abstract: 1,151,876. Ink-ribbon arrangements. ING. C. OLIVETTI & C. S.p.A. 8 July, 1966 [8 July, 1965], No. 30731/66. Heading B6F. A re-usable inscription element comprises two ribbons 1, 4, viz. a dark coloured fabric woven of multi-filamentary yarns, each one resulting from a plurality of distorted filaments and the fabric having a coating stably unhardenable adhesive material and a second ribbon 4 of transparent flexible hard material with a lapped surface which receives a visible impression from the adhesive layer when the two ribbons are forced together by the typing action. The adhesive coated endless ribbon is driven and guided by rollers 10-14 together with the transparent ribbon past the imprinting wheel and hammer 15, 16 and to a viewing position B. After this the ribbons are separated to obliterate the markings. Similarly correction of errors may be made by separating the two ribbons by pins at the printing position. The filaments of the ribbon may be textile or synthetic.
Patent GB-817296-A (GB)
Title: A circuit for limiting the rate of change of an applied electrical signal
IPC: G05D3/14
Filed: 1956-10-09
Abstract: 817,296. Limiters. COLLINS RADIO CO. Oct. 9, 1956 [Feb. 27, 1956], No. 30779/56. Class 40 (6). A circuit for deriving an output signal corresponding to an input signal but in which all rates of change in excess of a predetermined value are limited to that value comprises two serially connected oppositely-poled diodes 5, 6 connected in parallel with serially-connected resistors 8, 9, the junction points of the diodes and the resistors being interconnected by a bias source which under no-signal conditions maintain small currents flowing in the diodes 5, 6. In the arrangement shown the input is an error signal derived in an electrical servo system, the output being developed across the capacitor 10. The current flowing into or out of the capacitor 10 cannot exceed the " nosignal " value of current flowing through the diodes 5, 6 and hence the rate of change of signal amplitude developed across the capacitor 10 is limited to a value dependent upon this " no-signal " value of current and the capacitance of the capacitor.
Patent GB-266822-A (GB)
Title: Improvements relating to the supporting of electrical conductors within tubular insulators
IPC: H01B17/26
Filed: 1925-12-05
Abstract: 266,822. Maxwell, K. G., and Metropolitan-Vickers Electrical Co., Ltd. Dec. 5, 1925. Insulators.-Tubular insulators, employed to bush orifices in metal casings through which electrical conductors have to be passed, are fitted with metal inserts or perforated partitions for positioning and supporting the conductors therein. To fix the metal inserts in the tubular insulators they are arranged to fit loosely therein and then deformed or distorted so that the edge of the insert engages the interior surface of the tube and is rigidly secured in position. In one example ductile metal washers 1, 2, Figs. 1 and 2 of copper &c. are dished and inserted in position in the tube 3 by supporting them on a mandrel 4 and the bed 5 of a press. The ram 6 is then brought down on the washers 1, 2 and by flattening them causes the edges to engage the surface of the tube 3. In a further example a single perforated plate is used and is pressed between dies 9, 11. Fig. 4. having projections on their surfaces which form recesses 13, Fig. 6 in the outer portions of the upper and lower surfaces whereby the edge only is deformed and pressed into engagement with the tube 3. In other examples a taper mandrel expands the washer to fit the tube or the edge of the washer is forced over to engage the surface of the tube in each casing securing the washer in position.
Patent GB-159976-A (GB)
Title: Signalling transmitting mechanisms
IPC: H04L17/02
Filed: 1919-12-09
Abstract: 159,976. Western Electric Co., Ltd., (Western Electric Co., Inc.). Dec. 9, 1919. Addition to 24560/14. Type-printing telegraphs.-In a keyboard operated mechanism of the kind described in the parent Specification, each selecting-member, when operated, simultaneously controls a punch for perforating a tape and a circuit connected to a distributor or to a signal storing apparatus. Upon each of the fixed finger-controlling levers 5 rests a spring-blade 10 carrying a contact 18 adapted to engage a fixed contact 17 when the lever 5 is moved forward. The blades 10 are secured to contact block 11 and the contacts 17 are connected to the segments of a rotary distributor or to a signal storing apparatus.
Patent GB-762771-A (GB)
Title: Jet propulsion unit
IPC: F02K5/02
Filed: 1953-11-06
Abstract: 762,771. Direct acting two stroke cycle engines. ENDRES, J. Nov. 6, 1953 [Nov. 7, 1952; March 5, 1953; July 28, 1953], No. 30838/53. Class 7 (2). [Also in Groups XXVIII] A double acting two stroke free piston engine has a pair of pistons c<SP>1</SP>, c<SP>2</SP> which divide the engine cylinder i into an inner combustion chamber a and two outer combustion chambers b<SP>1</SP>, b2. The pistons c<SP>1</SP>, c<SP>2</SP> are connected to piston rods h<SP>1</SP>, h<SP>2</SP>, h<SP>3</SP> and the movements of the pistons are synchronized by gearing x<SP>1</SP> which consists of a pair of intermeshing gears which also engage racks on the piston rods h<SP>1</SP>, h<SP>2</SP>. The piston rods h<SP>1</SP>, h<SP>3</SP> are connected to compressor pistons L shaped in the form of a nozzle which slide in chamber m formed with nozzle shaped intermediate walls p. A part of the air from the rearward compressor is used to supercharge the engine unit. The compressor pistons may be of the normal flat type and the forward compressor used to supercharge the engine. In a modification only one compressor is provided and is arranged between the intake y and the engine unit. In this arrangement the intermediate walls p are dispensed with and alternate compressor pistons are attached to the piston h<SP>1</SP>, h<SP>2</SP> respectively.
Patent GB-1014053-A (GB)
Title: 7-hydroxy-coumarin derivatives and process for their production
IPC: C07D311/16
Filed: 1962-08-10
Abstract: The invention comprises compounds of formula <FORM:1014053/C2/1> wherein R1 is a hydrogen atom or an alkyl-alkenyl, aryl, aralkyl, heterocyclylalkyl, aminoalkyl (which may be N-substituted) or carb, alkoxyalkyl radical, R2 is an alkyl or aryl radical, R3 is an aminoalkyl (which may be N-substituted), alkenyl, carbalkoxyalkyl, carboxyalkyl or carbamido (which may be N-substituted) radical or, if R1 is an aminoalkyl radical, an alkyl radical, and R4 is a hydrogen atom or the group -OR3, and addition salts thereof, and their preparation by (a) reaction of a compound of formula <FORM:1014053/C2/2> wherein R14 is a hydrogen atom or a hydroxyl group, with a halide of formula R3Hal in the presence of an acid-binding agent and an inert solvent; (b) reaction of a compound of formula <FORM:1014053/C2/3> with a b -keto and ester of formula R2COCHR1COO alkyl; or (c) where R3 is a carbamidoalkyl radical, aminating the corresponding carbalkoxyalkyl compound.  7 - Hydroxycoumarin starting materials are prepared by reaction of a compound of formula <FORM:1014053/C2/4> with a b -keto-ester of formula R2COCHR1COO alkyl.  The compounds of the invention have coronary-dilatant activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral or parenteral administration, such as tablets, dragees and solutions.