baber/WOPTO huggingface dataset:
Patent GB-839404-A (GB)
Title: New polyesters
Inventor: BLOOM GEORGE ISAAC MAURICE
IPC: C08G63/672
Filed: 1957-10-18
Abstract: New polyesters, suitable for the manufacture of mouldings, films, lacquers and protective coatings have repeated units of the formula: <FORM:0839404/IV (a)/1> The polyesters may be made (1) by reacting an aqueous solution of a di-alkali metal salt of 2,2 - (4,41 - dihydroxy diphenyl) propane with a solution of the acid chloride or bromide of 4,41-dicarboxy diphenyl ether in a non-solvent for the polyester (e.g. benzene or toluene) or in a solvent for the polyester (e.g. methylene chloride, 1,2 - dichloroethane, 1,1,2 - trichloroethane or tetrachloroethane); catalysts for the reaction being trimethyl (or triethyl) benzyl ammonium hydroxide or chloride; (2) by heating equimolecular proportions of 2,2-(4,41-dihydroxy diphenyl) propane and the acid chloride or bromide of 4,41-dicarboxy diphenyl ether; (3) by heating at about 200 DEG  C. 1 mol. of 2,2-(4,41-dihydroxy diphenyl) propane with slightly more than 1 mol. of the dimethyl, diethyl, dipropyl or dibutyl ester of 4,41-di-carboxy diphenyl ether and 1.5 mols. of a polymethylene glycol containing 2-10 carbon atoms in the presence of an ester-interchange catalyst whereby alkyl alcohol is distilled off and then heating at about 300 DEG  C. to distil off most of thepoly methylene glycol; specified ester-interchange catalysts being lead oxide; alcoholates or glycolates of the alkali metals, the alkaline earth metals or magnesium; borates or carbonates of the alkali metals; magnesium oxide; and esters of ortho-titanic acid; (4) by effecting ester-interchange between the diacetate of 2,2-(4,41-dihydroxy diphenyl) propane and 4,41-dicarboxy diphenyl ether or its dimethyl ester.  The molecular weight of the polyesters may be increased by heating them above their melting point in vacuo or by heating them in powder form at just below their sintering temperature.  Before use the polyesters are preferably dried by heating them at 110-120 DEG C. in vacuo.  The polyesters may be used in the manufacture of housings, gears, bearings, bushings and electrical components. The polyester films may be used in the manufacture of container liners, electrical insulating tapes and sound recording tapes. Plasticizers, stabilizers, fillers, dyes or pigments may be added.
Patent GB-375195-A (GB)
Title: Improvements relating to twin flue chamber ovens for the production of gas and coke
IPC: C10B57/18
Filed: 1931-11-24
Abstract: 375,195. Coke ovens. GROVES, W. W., 30, Southampton Buildings, London.-(Otto & Co. Ges., Dr. C. ; 9, Christstrasse, Bochum, Germany.) Nov. 24, 1931, No. 32572. [Class 55 (i).] In horizontal chamber ovens 1 provided with twin flues 3, 4, and recuperators 8, 9 below the chambers for heating the gas and air, in each heating wall 2 a vertical steam pipe 32a or 32b is disposed in the upper brickwork of the oven adjacent the heating flues 4, and from each of these pipes, horizontal distributing pipes 34 are branched off at different levels in the bonding of the heating wall, and are provided with downwardly inclined steam outlets 35 relatively spaced so that there is uniform distribution of the steam over the whole chamber wall.
Patent GB-209108-A (GB)
Title: Improvement in or relating to looping machines for hosiery
IPC: D05B7/00
Filed: 1923-12-31
Abstract: 209,108. Victorius, M. L. Dec. 30, 1922, [Convention date]. Knitted-fabric sewing-machines. - A circular brush for a linking.machine is oscillated and at the same time intermittently fed forward so that the wear is evenly distributed and the brush is cleaned by a stationary comb. A brush 18 is mounted on a spindle 17 adjacent a friction disc b, adjustably spring-pressed against it. The disc is oscillated by a universally-jointed link 26 from a bell-crank 25, actuated from the machine drive. A sleeve c on the disc b contains a cam-surface g which coacts with a pin h on the stationary spindle 17 so that the brush is actuated for an equal portion of the oscillation of the disc b in each direction. In one direction, however, the brush is freed at the end of its motion so that owing to the presence of a comb 35, the resilience of the bristles will give a slight reverse movement to the brush which is impossible during the opposite movement. The brush is thus fed slightly forward during each oscillation. The bell-crank 25 also actuates the shears. In a modification, the bell-crank 25 is universally connected to one half of a spring-pressed ratchet-clutch, the other half of which is mounted on one side of the brush 18, Fig. 4. On the other side of the brush is fixed a ratchet, wheel 19 which gears with a wheel 34 mounted on a weighted lever 30. Owing to the coaction of a pin 36 on the wheel 34 with the lever 30 and an adjustable stop 37, the wheel 34 can only move during part of the movement of the bell-crank 25 in each direction. This results in relative movement of the clutch parts during clockwise motion and slip between the wheels 19, 34 during the reverse motion, so that the, brush is given the requisite motion. In a further modification, the driving ratchet-clutch part 43, Fig. 7, coacts with teeth 41 on a disc 40 fixed to the brush while peripheral teeth 42 on the disc engage a pivoted ratchet pawl 47, the motion of which in a clockwise direction is limited by a pin 50 and an adjustable stop 49 and in the reverse direction by a spring 48 for the same purpose as above. The clutch-member 43 has two crank pins of different throw, while the crank pin in any of the constructions may be adjustable to vary the throw.
Patent GB-977263-A (GB)
Title: Stabilisation of trimethylolpropane polyester lubricating oil
IPC: C08L67/00
Filed: 1961-09-12
Abstract: Trimethylol propane polyester lubricating oils are stabilized against deterioration by incorporating 0.1% to 5% by weight of either p-alkoxy-diphenylanimes, p-p1-dialkoxydiphenylamines or p-acyloxydiphenylamines in which the alkoxy and acyloxy groups contain 1-8 carbon atoms, and the acyloxy group is the residue of a carboxylic acid.  Particularly preferred p-alkoxy- and p,p1-dialkoxyphenylamines are p-methoxy-, p,p1 -dimethoxy-, p-isopropoxy-, and p,p1-diiso-propoxydiphenylamine. The p-alkoxy- or p,p1-dialkoxy compounds may have an aryl substituent attached to the alkyl portion, thus p-benzyloxydiphenylamine is a preferred compound. A particularly preferred p-acyloxydiphenylamine is p-acetoxydiphenylamine.  The inhibitor is mixed with the oil preferably to form a homogeneous mixture and may be used with other additives e.g. a metal deactivator, dye, viscosity index improver, pour point depressant, anti-foaming additive, detergent, and lubricity or extreme pressure additive.ALSO:Trimethylolpropane polyester lubricating oils are stabilized against deterioration by incorporating 0.1-5% by weight of either p-alkoxydiphenylamines, p,p1 - dialkoxydiphenylamines or p-acyloxydiphenylamines in which the alkoxy and acyloxy groups contain 1-8 carbon atoms, and the acyloxy group is the residue of a carboxylic acid.  Particularly preferred p-alkoxy and p,p1-dialkoxydiphenylamines are p-methoxy-, p,p1-dimethoxy-, p-isopropoxy -, and p,p1 - diisopropxydiphenylamine. The p-alkoxy or p,p1-dialkoxy compounds may have an aryl substituent attached to the alkyl portion, thus p-benzyl-oxydiphenylamine is a preferred compound. A particularly preferred p-acyloxydiphenylamine is p-acetoxydiphenylamine.
Patent GB-1151499-A (GB)
Title: Improvements in or relating to Semiconductor Devices having a Stable Dielectric Coating
IPC: H01L21/316
Filed: 1966-07-20
Abstract: 1,151,499. Semi-conductor devices. NIPPON ELECTRIC CO. Ltd. 20 July, 1966 [30 July, 1965], No. 32667/66. Heading H1K. A device has a semi-conductor substrate bearing a dielectric coating containing a uniformly distributed impurity material, the doped coating having been deposited as a result of a vapour-phase reaction. The dielectric may be the passivating insulation of planar diodes and transistors or may be the capacitive dielectric layer of MOS diodes and transistors. In the manufacture of an embodiment an N-type silicon wafer rests on a high resistivity silicon body placed on a R.F. heated carbon block. Phosphorus-doped silicon oxide is deposited on the wafer by the interaction of hydrogen-carried streams of water vapour and of mixed silicon tetrachloride and phosphorus trichloride. Aluminium or gold is applied by masked vapour deposition to selected areas of the oxide and the wafer diced to provide MOS diodes with drift-free characteristics. Zinc and lead are mentioned as alternative impurities for doping the oxide. The content of phosphorus in silicon oxide should be in the range 1À94-10À2 wt. per cent; in other systems the impurity content should be such as to give an equivalent effect.
Patent GB-1262867-A (GB)
Title: Valves for vehicle levelling systems
Inventor: WENHAM GRAHAM JOHN
IPC: B60G17/052
Filed: 1968-07-09
Abstract: 1,262,867. Vehicle suspensions; levelling. GIRLING Ltd. 4 June, 1969 [9 July, 1968], No. 32754/68. Heading B7D. [Also in Division F2]  A valve for controlling the flow of a fluid to a vehicle levelling means comprises tilting discs or tipping valves 6, 7 operable by a damped rotatable shaft and seated in an inlet port 10 and an exhaust port 7a. When a vehicle is lowered on its suspension by a load, a shaft 3 is rotated such that a lever 4 tilts or tips valve 6 from its seating member 16 against a spring 14 to admit pressurized air to the levelling means via the valve chamber 11 and a port 8. Raising the vehicle causes the shaft to rotate such that a lever 5 tips the valve 7 and allows the air to be relieved through the exhaust port 7a. Damping of the valve is achieved by shaft 3 being connected to a rod 17 having a spherical seat 19 which moves against spring 22 loaded pistons 20, 21 operating in a damping liquid. Other embodiments show the levers 4, 5 replaced by a single lever (32) and, in one suitable for use in an hydraulic fluid levelling system, a bleed port (54) to allow the damping fluid to be drained independently of the levelling fluid.
Patent GB-1523143-A (GB)
Title: Marine outboard propulsion units
IPC: B63H20/14
Filed: 1975-08-05
Abstract: 1523143 Outboard propulsion units BRUNSWICK CORP 5 Aug 1975 [21 Aug 1974 9 July 1975] 32761/75 Heading B7V In an outboard propulsion unit, a bevel gear 21 is rotatably mounted on and axially captive with the inner end of a propeller shaft 14 and drives the shaft 14 by way of a one way, disengageable clutch 50 which permits the propeller (not shown) to windmill when in its operative position. As described the clutch 50 is a spring coil and a clutch control member 52 is axially displaceable to engage a radially extending part 51 of the clutch spring and thereby disengage the gear 21 from the shaft 14. The gear 21 meshes with a bevel gear 20 connected to a vertical drive shaft 13. The propeller shaft 14 and gear 21 are respectively mounted in bearings 27, 35. The outer race of bearing 35 is retained against a shoulder 37 of a counterbore by an annular part 38 and a casing part 28 which carries the bearing 27. The part 28 is held by a threaded member 31. The inner race of bearing 35 is held by a threaded nut 36. The unit is filled with oil via a filler port and plug 53 and lubricant circulates, due to the constant meshing of the gears 20, 21, upward in a bore 15 through an opening 54 and down within a bore 11.
Patent GB-1524127-A (GB)
Title: Alternating current generator
IPC: H02J7/14
Filed: 1976-08-06
Abstract: 1524127 Supply circuits for motor vehicles NIPPONDENSO CO Ltd 6 Aug 1976 [9 Aug 1975] 32769/76 Heading H2H An alternating current generator for a motor vehicle comprises two sets of series connected phase winding 3, 4 and an excitation winding 6, the junctions 5 of the sets of phase windings being connected to a bridge rectifier 7. The output of the rectifier charges a battery 8 and is also supplied to a voltage regulator 10 which controls the current in the winding 6. The windings 4 are connected via a switch 15 to rear window heating elements 17 so that an alternating voltage of 90 volts is supplied to these elements.
Patent GB-823094-A (GB)
Title: Improvements in or relating to the manufacture of cast or extruded ceramic structural units
IPC: B28B7/38
Filed: 1956-10-26
Abstract: In the casting or extrusion of ceramic building units such as bricks there is interposed between the mould or die and the mouldable ceramic material a film comprising an aqueous solution of a surface active agent and an alkali, and/or there are incorporated in the material prior to casting or extrusion a water-soluble surface active agent and water-soluble alkaline material.  The surface active agent is preferably anionic, e.g. sodium alkyl aryl sulphonate.  Water soluble phosphates as carbonates e.g. of sodium or mixtures thereof, are suitable for the alkaline material.  Anti-corrosive, e.g. sodium bichromate, may be added; also anti-bacterial substances, e.g. copper sulphate, to inhibit rotting of conveyer belts.  Inert extenders e.g. sodium sulphate, may be added.  For treatment of mouldable material in an extrusion machine, a suitable strength of solution is 1 lb. of the mixture of 8-10 gallons of water, for 24,000 lb. material.  The strength of a solution first incorporated is material to be moulded varies with the material and is generally 1 lb. in 100 gallons for 5000 lb.  A specific example of a suitable mixture is 12 1/2 % sodium alkyl aryl; 40% Na3PO4; 35% Na2CO3; 10% Na2SO4; 1% CuSO4; 1% sodium benzoate and 1/2 % colouring matter.
Patent GB-356026-A (GB)
Title: Improvement in gauge blocks and other precision measuring instruments
IPC: G01B3/30
Filed: 1930-10-31
Abstract: Gauge blocks and other precision-measuring instruments are made of a stainless steel alloy containing 1,75 per cent of carbon, 12 per cent of chromium, 3,6 per cent of cobalt, 0,65 per cent of molybdenum, and 0,6 per cent of nickel.  The articles thus made are hardened at 1050 DEG  C., or may be normalized at 1100 DEG  C. and afterwards hardened in oil at 1000 DEG  C.
Patent GB-1193443-A (GB)
Title: Electrostatic Image Development Method
IPC: G03G15/08
Filed: 1967-07-18
Abstract: 1,193,443. Developing electrostatic images. RANK XEROX Ltd. July 18, 1967 [July 21, 1966(4)], No.32868/67. Heading G2H. An apparatus for developing latent electrostatic images comprises an inclined shoot positioned below and apart from a latent electrostatic image bearing member, supply means for introducing developer material to the upper end of the shoot, collection means for receiving the developer material from the shoot, and vibratory means for vibrating the shoot to fluidize the developer material. A xerographic belt 20, Fig. 1, is passed through a development zone 42 within a housing 82. An endless belt conveyor 90 having buckets 94 transparts developer to a station 88 where it is cascaded through an input shoot 106 above a vibrating plate 108 actuated by a vibrator 132 through a link (122) Fig. 2 (not shown) to fluidize the developer at the zone 72. The plate 108 may be biased by a source 130 to act as a development electrode. In another embodiment a latent image on a drum 210 Fig. 4 (not shown) is developed at a zone (214) backed by an arcuate plate (220). An oscillatory motion about a shaft (212) is imparted to end plates (216) by a linkage (228). Electrode wires 222 span the plates (216). In another embodiment, a developer supporting plate (616) Fig. 10 (not shown) and a screen (626) are reciprocated axially of drum (510) by a motor (632) Fig. 11 (not shown). The screen is earthed or connected to a source (530) of potential.
Patent GB-782344-A (GB)
Title: Improvements relating to machines for chamfering toothed parts
IPC: B23F19/10
Filed: 1955-10-10
Abstract: 782,344. Gear-cutting. GLEASON WORKS. Oct. 10, 1955 [Oct. 18, 1954], No. 32923/56. Divided out of 782,343. Class 83 (3). A machine for chamfering toothed workpieces P comprises a work-spindle 198 and a power-driven mechanism 165 for oscillating a tool-carrying arm 49 and concomitantly feeding it along the axis of oscillation 168 to take succes. sive cuts on the workpiece. The machine is as described in Specification 782,343.
Patent GB-795394-A (GB)
Title: Improvements in or relating to portable folding baths and cots for infants
IPC: A47D5/00
Filed: 1955-11-18
Abstract: 795,394. Folding furniture underframes. SANDFORD, L. G., and SANDFORD, D. I. E. Nov. 19, 1956 [Nov. 18, 1955], No. 33008/55. Class 52(3) The framework of a child's foldable cot or bath comprises a pair of end X-frames each consisting of tubular metal legs 1, 2 pivotally connected intermediate their ends, the upper end of each leg having an inwardly directed horizontal extension 4 into which fit front and back rails 5 for supporting the cot. Struts 12, 13 are detachably secured by wing nuts. Each leg may have a telescopic tubular extension 7, a securing peg 11 being passed through aligned holes 8, 10 in the extension 7 and legs 1, 2. A table top may be provided by a frame having members 14...17 over which is stretched a canvas sheet 18 secured by rubber bands 23 and straps 25 or pressstuds.
Patent GB-734430-A (GB)
Title: Alkamine esters of 4-amino-2-hydroxy-benzoic acids which are alkylated at the n and o atoms
Filed: 1952-12-30
Abstract: The invention comprises esters of the formula <FORM:0734430/IV (b)/1> in which A is a substituted or unsubstituted aliphatic hydrocarbon radical containing not more than 10 carbon atoms, R1 and R2 are aliphatic hydrocarbon radicals and (1) R3 and R4 are substituted or unsubstituted hydrocarbon radicals each containing not more than 10 carbon atoms or (ii) one of R3 and R4 is a hydrogen atom and the other is a substituted or unsubstituted hydrocarbon radical containing not more than 10 carbon atoms; or (iii) the radical -N(R3)(R4) is a nitrogen-containing, saturated heterocyclic ring and acid salts thereof and the preparation thereof by reacting (1) 4-alkylamino-2-alkoxy-benzoic acid with an amino alcohol HO.A.N. (R3)(R4); (2) p  4-alkylamino-2-alkoxy-benzoic acid with a halogenated alcohol and subsequently with an amine H.N.(R3)(R4); (3) a metal salt of 4-alkylamino-2-alkoxy-benzoic acid with an ester X.A.N. (R3)(R4) wherein X is halogen; (4) an ester of 4-alkylamino-2-alkoxy benzoic acid with an aminoalcohol HO.A.N(R3)(R4); (5) an appropriate ester of 4-amino-2-alkoxy benzoic acid with an alkyl halide, or with an aliphatic aldehyde or ketone with subsequent hydrogenation; (6) a compound of the formula <FORM:0734430/IV (b)/2> with an alkylating agent; (7) a compound of the formula <FORM:0734430/IV (b)/3> with an alkyl halide; (8) an ester of 4-alkyl-amino-2-phenoxy-benzoic acid with an aminoalcohol HO.A.N(R3)(R4); (9) a compound of the formula <FORM:0734430/IV (b)/4> wherein X is halogen, and M is a metal atom, with an alkyl halide and subsequently an amine H.N.(R3)(R4).  Examples disclose the preparation of the dimethylaminoethyl esters of 4-n-butylamino-2-n-butoxy-, 4-n-butylamino-2-n-butoxy-, 4 - n - butylamino - 2 - isopropoxy-, and 4 - isopropylamino - 2 - n - butoxybenzoic acid, the diethylaminoethyl esters of 4-n-butyl-amino - 2 - methoxy -, 4 - allylamino - 2 - n - butoxy -, 4 - isobutylamino - 2 - n - propoxy-, and 4 - allylamino - 2 - n - propoxybenzoic acid, g - (41 - morpholinyl) - propyl ester of 4 - n - butylamino - 2 - methoxybenzoic acid, (a ,b  - dimethyl - g  - diethylamino) - n - propyl ester of 4 - n - propylamino - 2 - ethoxybenzoic acid, and the piperidinoethyl and methyl esters of 4-n-butylamino-2-n-butoxybenzoic acid.
Patent GB-506536-A (GB)
Title: Manufacture of intermediates, sensitising dyes and light-sensitised photographic emulsions
IPC: C09B23/02
Filed: 1937-11-30
Abstract: 506,536. Dyes; intermediates; sensitizing photographic emulsions. I. G. FARBENINDUSTRIE AKT.-GES. Nov. 30, 1937, No. 33058. Convention date, Jan. 25. [Class 2 (iii)] [Also in Group XX] Thiazoles and selenazoles are made by converting the acetyl compound of 4- or 5-aminothionaphthene into the thio- or selenoaceto compound by means of phosphorus pentasulphide or selenide respectively and oxidizing in alkaline solution with potassium ferricyanide. Quinaldines are made by causing 4- or 5- aminothionaphthene to react with paraldehyde in presence of hydrochloric acid. Dyes are made from quaternary salts of the above bases as follows : carbocyanine dyes by condensing with orthocarboxylic acid esters in presence of pyridine (cf. Specification 232,740, [Class 2 (iii)] ; pseudocyanines according to the process described in Specification 423,792, by condensing with nitrogenous bases of the quinoline series containing in alpha-position to the nitrogen atom a reactive bivalent polyatomic grouping of which the atom linked to the said alpha-position is different from carbon : isocyanines by reaction with quaternary salts of quinoline in presence of alcohol and a strong base; pentacyanines by condensation with #-alkoxyacroleinacetals (cf. Specification 232,740) ; heptacyanines by reaction with pyridinium compounds of which the nitrogen atom is loosely bound (cf. German Specification 499,967) such as dinitrophenylpyridinium compounds and pyridinium cyanohalides, or with the products obtainable from these pyridinium compounds and primary or secondary amines ; styryl dyes by reaction with dialkylamino-, benzaldehydes in presence of piperidine. In an example, 5-acetylaminothionaphthene is refluxed with phosphorus pentasulphide in benzene and the thioacetaminothionaphthene obtained oxidized with alkaline potassium ferricyanide to form 2-methylthionaphthenethiazole ; the base is converted into its ethylsulphoethylate which is condensed with ethyl orthoformate in pyridine to form the carbocyanine and the dye precipitated with potassium bromide. The dyes are of use as photographic sensitizers and may be incorporated in silver halide emulsions. Sensitizing data are given for the dye of the example and also for the carbocyanine from the thiazole derived from 4-aminothionaphthene, the isocyanine from the thiazole derived from 5-aminothionaphthene and p-toluquinaldine, the pseudocyanine from the same thiazole and N-ethyl-p-toluthioquinolone-ethiodide, the styryl dye from the same' thiazole and p-dimethylaminobenzaldehyde and the penta- and heptacyanines from the same thiazole. The Specification as open to inspection under Sect. 91 refers to nona- and undecacyanines. This subject-matter does not appear in the Specification as accepted.
Patent GB-341159-A (GB)
Title: Improvements relating to carriages for typewriting or like machines
IPC: B41J11/22
Filed: 1929-10-31
Abstract: 341,159. Bearings. ROYAL TYPEWRITER CO., Inc. ; 316, Broadway, New York, U.S.A.-(Assignees of Scherer, G. M.; 316, Broadway, New York, U.S.A.) Oct. 31, 1929, No. 33185. Convention date, Nov. 8, 1928. [Class 12 (i).] Rectilinear-motion bearings.- In ball-bearing arrangements for the carriage of a typewriting or like machine, lifting of the movable rail is prevented by means of a roller which travels with the balls and is mounted between one of the rails and a clamp secured to the other rail. In the arrangement shown in Fig. 12 the movable and fixed rails 1, 2 are formed with races for balls 8 mounted in pairs in yokes 15, one ball of each pair engaging a pinion 9 meshing with racks 4, 5 on the rails, and the rail 1 is held down by rollers 12 which are carried by the yokes and run on the rail 2 and on a flange 11 formed on one or more clamps or plates 10 secured to the rail 1. The plates 10 may be adjustably secured, preferably by screws 14 passing through inclined slots. The yokes 15 may be replaced by yokes for single balls. In the arrangement shown in Fig. 6 two balls 8 are mounted in a yoke 22 provided with ears 25 carrying a rod 27 having forked ends 29 in which are mounted rollers 30 running on the fixed rail 2 and a flange on a clamp or plate secured to the movable rail. Preferably only one of the balls 8 is provided with a pinion 9, and the co-operating racks 5a are half the length of the rails.