baber/WOPTO huggingface dataset:
Patent GB-722186-A (GB)
Title: Improvements relating to the production of sapogenins
Inventor: SPENSLEY PHILIP CALVERT
IPC: A61K36/896
Filed: 1951-11-12
Abstract: A steroidal sapogenin, e.g. hecogenin, is obtained from plant material containing sapogenin-yielding material, e.g. the waste from decorticated sisal leaves, by a process in which the juice is expressed to separate the sapogenin-yielding material therefrom. Subsequently the juice is subjected to acid hydrolysis, e.g. with sulphuric acid, to provide water-insoluble hecogenin which is recovered from the hydrolysate by collection on an adsorbent substance, such as activated charcoal, and which is extracted with a solvent, e.g. ether, isopropyl ether, ethyl acetate benzene or carbon tetrachloride.  The hecogenin is obtained therefrom by fractional crystallization.  Specification 702,072 is referred to.
Patent GB-213297-A (GB)
Title: Improvements in or relating to apparatus for delivering measured quantities of petrolor other liquids from barrels or other containers
IPC: B67D7/16
Filed: 1922-10-02
Abstract: 213,297. Stanley, F. W. Oct. 2, 1922. Fixed-chamber apparatus; with discharge by separate fluid; varying quantity measured. - A measuring chamber is provided with an adjustably arranged tube adapted to supply liquid thereto in excess of the quantity required and to take back the surplus liquid, leaving behind the measured quantity to be delivered. The metal chamber 12 which may or may not be closed to the atmosphere is provided with a movable pipe 24 which can be raised or lowered by a lever 25. Inside the pipe 24 are inserted two or more supply pipes 16 leading with flexible connections to a plurality of supply tanks. Mounted on bearings on the walls of the chamber is a spindle 26 carrying the plate 27 which is formed with notches adapted to engage a pin 28 on the pipe 24 so as to hold the pipe together with the pipes 16, 16 at certain predetermined heights. At the end of the spindle 26 outside the chamber is a handle with a pointer and dial (not shown). Corresponding with the levels at which the lower ends of the pipes 24, 16, 16 are held are discs 29 between the edges of which and the interior surface of the chamber are restricted annular passages 30. In operation, the pipe 24 is raised and the plate 27 turned so that the pin 28 rests in the required notch. Fuel is then pumped in until it is seen by the required prismatic or other glass 21 to be above the lower end of the pipe 24, 16, when the surplus is allowed to syphon back. leaving the exact quantity required in the chamber 12. This may then be delivered through the valve 31. The regulation of the height of the pipe 24 may be effected by means of the provision of slotted collars or rings instead of the means shown. Specification 213,517 is referred to.
Patent GB-463079-A (GB)
Title: Improvements in the production of stiffened fabrics and articles of wearing apparel
IPC: D06M17/02
Filed: 1935-09-27
Abstract: An adhesive for uniting fabrics to form stiffened compound fabrics comprises a water-insoluble thermoplastic cellulose derivative in finely-divided form and a carbohydrate derivative that swells or dissolves in water.  Cellulose nitrate, acetate, formate, propionate, or butyrate, ethyl or benzyl cellulose may be used together with carbohydrate derivatives such as water-soluble cellulose esters or ethers, e.g. methyl or ethyl cellulose, cellulose formate or acetate, or starch acetate, as a suspension in water or other liquid.  A plasticizer may be added.  For example, an aqueous suspension containing cellulose acetate, methyl cellulose, and dimethyl phthalate may be used. Specification 462,242 is referred to.
Patent GB-394527-A (GB)
Title: Improvements in screw propellers
IPC: B63H1/26
Filed: 1932-09-27
Abstract: 394,527. Screw propellers. PERCIVAL, S., 40, Chancery Lane, London.-(Smith, H. H. and Smith, W. H., (trading as Smith & Co., H. H.); 334, E. Jefferson Avenue, Detroit, Michigan, U.S.A.) Sept. 27, 1932, No. 26804. [Class 114.] A marine screw propeller is provided with a working face which is developed by a concave generatrix 5, and with a drag face 6 which is of convex form and is of stream line form in section, the maximum thickness of the sections lying on a line approximately parallel with the leading edge contour and located about one-third of the distance between the leading and following edges 1, 2. These edges are of arcuate form and the width of the blade decreases from root to tip.
Patent GB-733683-A (GB)
Title: Improved method of sealing a thick-walled glass exhaust tube of a glass vacuum vessel
IPC: C03B23/18
Filed: 1951-11-16
Abstract: 733,683. Electric heating. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 16, 1951 [Nov. 21, 1950], No. 26920/51. Class 39 (3). [Also in Groups XXIII and XL (a)] An annealing furnace for sealing the exhaust tube 2 of a glass vacuum vessel consists of an insulating body 7 in which a heating coil 8, 9 is housed, the two parts 8, 9 being heated separately or together. The double coil 8, 9 may be replaced by a single coil which during cooling of the seal 11, is raised to such level that the union between the exhaust tube 2 and the seal 11 is at the centre of the coil. Heating may alternatively be effected by passing a high frequency current through the coil. Operating characteristics of the coil are given. Specification 559,753 is referred to.
Patent GB-1006362-A (GB)
Title: An improved ultra-sonic detector
IPC: G08B13/16
Filed: 1961-07-26
Abstract: 1,006,362. Fire and burglar alarms. R. R. CLARK. July 26, 1962 [July 26, 1961], No. 26982/61. Heading G4N. [Also in Division H3] A fire or burglar alarm system comprises an emitter of ultrasonic waves including a local transistor oscillator 10 connected to an ultrasonic output transducer 20, and a receiver comprising transistor amplifiers 50, 80 and a switching transistor 101 having a normally energized relay 110 in its collector circuit. Any disturbance of the standing wave sound field, due to a fire or an intruder, causes transistor 101 to switch off and de-energize relay 110 to operate an alarm. Band pass amplifier 50 which has a centre frequency tuned to that of the transmitter output is characterized in that it has automatic gain control (see Division H3) provided by the transistor 53 output via diode 55 and resistor capacity circuit 59 which is connected via a clamping diode 56 to the transistor 52 input. Operation.-If the standing sound wave field is not disturbed, a sound signal of constant amplitude and of the local oscillator frequency only will be received, resulting in a D.C. potential only across the capacitor 71 of filter 70 (i.e. the output of the first detector 61). Disturbance of the standing wave field, however, results in the reception of varying amplitude and fequency sound waves, which produce low frequency A.C. signals at the first detector output. These signals are amplified at 80, and rectified at 91, 92, the resulting D.C. voltage being appliedto the base of transistor 101, to overcome the forward bias via resistor 102, and cut off the transistor. Alarm relay 110 includes " latching " contacts 116 which form a " reset " control. Capacitative coupling for transistor 101 is provided by capacitor 103 to discriminate against stray signals. A test signal may be applied at 123.
Patent GB-995194-A (GB)
Title: Bonding cellulose acetate sheet materials
IPC: C09J4/00
Filed: 1961-07-26
Abstract: 995,194. Laminates. CELANESE CORPORATION OF AMERICA. July 26, 1961 [July 28, 1960 (2)], No. 27069/61. Heading B5N. Cellulose acetate sheets are bonded together with a cellulose acetate binder containing particles not greater than 50Á diameter under pressure and at a temperature not exceeding 150‹ C. The binder contains plasticizers including acetophenone, tris (beta chloroethyl) phosphate, triethyl citrate, triacetin, diacetin, triphenyl phosphate and dimethyl, dimethoxyethyl, dibutyl or diethyl phthalates. The binder may contain a volatile diluent including a quantity of acetate solvent insufficient to cause the particles to dissolve. The sheets may be previously embossed or made opaque with synthetic pearl essence.
Patent GB-625912-A (GB)
Title: Improvements in or relating to bone conduction receivers
IPC: B23Q1/28
Filed: 1946-09-10
Abstract: 625,912. Bone conduction receivers. MAICO CO., Inc. Sept. 10, 1946, No. 27140. Convention date, May 27. [Class 40 (iv)] In order to overcome difficulties due to varying contact pressure when testing hearing for bone conduction acuity, a bone conduction receiver has the vibratory reproducer 18 spring mounted so that when the contact button 12 is compressed to be flush with the housing 4, a predetermined contact pressure is established. The receiver consists of a housing 1 with a cap 4 bushed with soft rubber 6, a vibratory reproducer 18 standing on an insulating plate 30 supported by coil compression springs 36 from the thrust plate 35 and a bracket 15, to which the plunger 10 carrying the contact button 12 is secured, screwed to the vibratory reproducer, the free end being subject to the vibrations of the armature 26 through the link 27. The contact pressure when the receiver is applied to the bone structure as in Fig. 1 is regulated by turning the knob 40.
Patent GB-868436-A (GB)
Title: Improvements relating to pouring spout constructions for containers
IPC: B65D47/26
Filed: 1959-08-07
Abstract: 868,436. Stoppers &c. AMERICAN FLANGE & MANUFACTURING CO. Inc. Aug. 7, 1959 [Aug. 11, 1958], No. 27144/59. Class 125(3). A pouring spout construction, for a container 1 having spaced openings 12 and 13 for liquid and air respectively, comprises a base member and a valve member, both of plastic or other comparatively resilient material, said base member comprising a valve casing or seating 3 with a lateral port 5 which is to be sealingly inserted into said liquid opening of the container, a flat portion 2 and a tubular socket 6 to be sealingly inserted into the air opening of the container, and said valve member comprising a gutter shaped pouring element 8, a plug or similar projection 9 for closing the socket 6 and a cock plug 7, with a lateral port 10, the plug 7 being rotatably mounted in the valve seating 3. Filling of the can 1 takes place through the large opening in the valve seating 3 and the port 5, while the air in the can is permitted to escape through the tubular socket 6, thus making quick filling possible by means of a jet from a filling pipe. When the can is filled, the cock plug 7 is pressed into the valve seating 3 and the peg 9 is pressed into the tubular socket 6 to seal the can. To empty the contents from the can, the gutter shaped portion 8 is gripped, the plug 9 is removed from the socket 6 and the portion 8 is turned through half a revolution so as to extend over the edge of the can as shown in Fig. 1.
Patent GB-1530423-A (GB)
Title: Manufacture of theaspiran and the conversion thereof into theaspirone
IPC: A23L27/20
Filed: 1976-03-10
Abstract: 1530423 Preparation of theaspiran L GIVAUDAN & CIE SA 10 March 1976 [11 March 1975 30 Dec 1975] 27228/77 Divided out of 1530421 Heading C2C A process for the preparation of theaspiran, i.e. 2,6,10,10-tetramethyl-1-oxa-spiro (4,5-dec- 6-ene, of the formula comprises treating 4-(2,6,6-trimethyl-2-cyclohexen-1-ylidene)-butan-2-ol of the formula with an acid. The acid is preferably a protonic acid such as sulphuric, phosphoric or p-toluenesulphonic acid, or a Lewis acid, e.g. BF 3 , SnCl 4  or ZnCl 2 . The starting material is suitably obtained by the method described in Specification 1,530,422. The theaspiran may be converted into theaspirone having the formula by oxidation. Theaspiran and theaspirone possess flavour-imparting properties.
Patent GB-136804-A (GB)
Title: Improvements in and relating to the Production of Textile Fibrous Material.
Inventor: HOESTE MAARTEN
IPC: D01C1/02
Filed: 1919-11-05
Abstract: 136,804. HofstÚ, M. Dec. 17, 1918, [Convention date]. Retting.-Woody vegetable material such as the stalks and other parts of plants having a hard bast, such as the rind of ramie, trees, &c., is treated successively with two liquids which tend to react within the material, generating gas. A 20 to 40 per cent alkali solution, boiling or not, may be used, and subsequently a saturated solution of an ammonium salt, such as the chloride, the materials being boiled therein until the ammonia gas is completely discharged. The material is finally washed with water, which may be boiling, and dried. Ammonia gas generated within the fibres tends to split away the woody material, laying bare the fibres.
Patent GB-273469-A (GB)
Abstract: 273,469. Ewarts, Ltd., and Smith, G. B. June 15, 1926. Tanks and cisterns.-In a fuel supply system for an internal-combustion engine wherein two tubes differing in length and controlled by a common cock depend into the fuel tank so as to ensure a reserve of fuel and to give warning when only the reserve is left, the tubes are concentric and are attached respectively to the fixed and movable members of the control cock. The cock casing b is secured to a ring member d in the tank c and encloses the rotatable plug a held in position by a cap b<3> and a spring and rotatable by a handle a<4>. The casing carries a tube b', and the plug a longer and inner concentric tube a'. Ports a<2>, a<3> in the plug may place the outer and inner tubes in communication with the outlet b<2>, or both tubes may be cut off altogether. The inner tube may be flattened to provide a guiding surface. A gauze filter b<4> is carried by the outer tube.
Patent GB-1009783-A (GB)
Title: Asbestos composition and process for preparation
IPC: C08K7/12
Filed: 1962-07-17
Abstract: A composition comprises polyethylene or polypropylene and a dehydrated amphibole asbestos, e.g. anthopyllite, amosite, tremolite or actinolite such as Blue Rock or Powhatan asbestos. The polyolefin may be cross-linked, e.g. as described in Specifications 619,905 or 659,958, or by irradiation.  Optional ingredients are resins such as phenol-formaldehyde, cresol-formaldehyde, urea-formaldehyde, melamine-formaldehyde, furfuryl alcohol and epoxy resins; polyesters such as glyceryl phthalate, polyethylene terephthalate, and polyethylacrylate; polyvinyl chloride, vinyl chloride-vinyl acetate copolymers, polystyrene, natural rubber, butadiene-acrylonitrile copolymer, butadiene-styrene copolymer, isobutylene-butadiene copolymer, dially phthalate, styrenated polyester, nylon, carbon black, titanium dioxide, ferric oxide and alumina.  The products find application in coating electrical conductors. Specifications 619,905 and 659,958 are referred to.
Patent GB-232998-A (GB)
Title: Improvements in hydraulic variable speed power transmitting mechanism
IPC: F16H61/54
Filed: 1923-11-01
Abstract: 232,998. Vessey, E. A. Nov. J, 1923. Clutches and speed-varying mechanism.-In a hydraulic infinitely variable speed gear of the type comprising a driving member or impeller and a driven member or propeller, the range of speed ratio with high or predetermined efficiency is extended as desired by (1) the choice of propeller vane profile so as to have a suitable range of reaction, (2) by limiting the angle between the velocity vectors for the liquid corresponding to the maximum and minimum propeller speeds to the difference in angle of incidence corresponding to maximum and minimum reaction coefficient for the vane profile chosen, and (3) by the suitable co-relation therewith of (a) the absolute velocity and direction of the liquid stream directed against the vanes, (b) the ratio between the diametens of the impeller and propeller, (c) the fluid content of the impeller, and (d) the centrifugal head generated in the propeller. Formulae and directions are given in the Specification. In one embodiment the gear comprises a driving shaft d, Fig. 3, carrying shells a, b, c between which are impeller vanes, one set being for obtaining a reverse drive. Propeller vanes are provided between shells g, h, i on the driven shaft, and the liquid flow is controlled by an axially adjustable valve n. The gear may be cooled by external fins or a water jacket and radiator, expansion of liquid is compensated by a spring-controlled piston t, and means may be provided for varying the cubic contents of both impeller and propeller. In a modification, the gear comprises a fixed member 2, 3, 4, Fig. 4, provided with guide vanes. and an air chamber 10 compensates for liquid expansion.
Patent GB-1065116-A (GB)
Title: Improvements in windscreen wiper installations for vehicles
IPC: B60S1/08
Filed: 1964-07-03
Abstract: 1,065,116. Windscreen wipers. ROBERT BOSCH G.m.b.H. July 3, 1964 [July 4, 1963], No. 27475/64. Heading A4F. [Also in Division H2] A windscreen wiper motor is controlled by a manually operable switch which in at least one position causes the motor to operate continuously and in another position energizes a periodically operating electronic impulse generator to cause the motor to operate intermittently. When the rotary contact arm 40 of the switch 27 is set to position a relay coil 26 is energized continuously from a battery 20, and relay contacts 23 are closed to energize the main and shunt field windings 10<SP>1</SP>, 10<SP>11</SP> of the motor 10. On moving the arm 40 to position b a lug 53 on a rotary plate 54 opens contacts 50, 51 to de-energize the shunt winding 10<SP>1</SP>1 so that the motor rotates continuously at a higher speed. For intermittent operation of the motor 10 the arm 40 is set between the positions c, d when an astable multi-vibrator 28 including transistors 60, 61 is energized to supply current pulses to the relay coil 26 of durations determined by a variable resistor 68 the setting of which is determined by the position of the arm 40, which is mounted on a spindle 36 which carries the contact arm 69 of the variable resistor 68. During each interval in which the relay coil 26 is deenergized the motor continues operation to complete a wiping stroke, being supplied through a line 22 including a switch 30, 31 which is opened by a rotary cam 34 at the end of a wiping stroke.
Patent GB-313870-A (GB)
Title: Improvements in condenser microphones
IPC: H04R19/00
Filed: 1928-09-25
Abstract: 313,870. British Thomson-Houston Co., Ltd., (Assignees of Barton, F. C.). June 18, 1928, [Convention date]. Condenser telephones.-In a condenser microphone of the type in which the capacity is independent of atmospheric conditions, the diaphragm 10, Figs. 2, 3, preferably of a light metal alloy, is clamped between collars 11, 12 whose adjoining surfaces 13, 14 are corrugated, paper washers 15, 16 being provided to protect the clamped surfaces. After clamping, the diaphragm is stretched by forcing ring 17 against its surface with the aid of threaded ring 25. A washer 21 determines the spacing between the diaphragm 10 and a rigid electrode 19 which is electrically insulated from a member 20 and the diaphragm 10 by spacers 29 - - 32, and is provided with a recess reduced in diameter near its bottom to form a shoulder against which a rubber member 28 is held by a member 22. The closed chamber 23, so formed, communicates with the dielectric space between diaphragm 10 and rigid electrode 19, through a channel 24 cut in the latter. Screws 26, 27 act as terminals.
Patent GB-924601-A (GB)
Title: Basic heterocyclic azo dyestuffs
IPC: C09B26/04
Filed: 1960-08-08
Abstract: The invention comprises dyes of formula <FORM:0924601/IV(a)/1> where X is an acid residue, A1 is an aromatic or heterocyclic radical, R3 is H or an alkyl, cycloalkyl, aralkyl or aryl radical, R4 is an alkyl, alkenyl, cycloalkyl, aralkyl or aryl radical, R5 and R6 are H or substituents, which may be part of a condensed ring, and Z is a bivalent group which completes a 6-membered heterocyclic ring. The dyes may be made, except when R3 is H and R4 is aryl, by treating appropriate dyes with a quaternizing agent p  R4X.  The dyes may also be made by treating a compound of formula <FORM:0924601/IV(a)/2> where Y is 0 or the residue of an arylamine, with a hydrazine compound of formula H2N-N(R4)-A1 the resultant hydrazone being treated, as a free base or salt, with a quaternizing agent R4X and, if desired, acylamino groups in A1 are hydrolysed to amino groups. The quaternizable dyes of the first process are of formula <FORM:0924601/IV(a)/3> and are made by coupling diazotized carbocyclic or heterocyclic amines with compounds of formula <FORM:0924601/IV(a)/4> and the salts obtained are treated with alkalies to yield the free bases.  Indicated as diazotizable amines are aniline, alkoxy-, halo- and alkylanilines, benzidine, naphthylamines, aminoazobenzenes, aminodiphenyl ethers and aminobenzthiazoles. Indicated methylenes are 10-methyl-, 10-methyl-6-chloro- and 6,10-dimethyl-9-methylene-acridines and 1-methyl-4-methylene-quinoline.  The above quaternizable dyes are also obtainable by treating compounds of formula <FORM:0924601/IV(a)/5> where Y is 0 or an arylamine residue, e.g. quinoline-4-aldehyde or acridine-9-aldehyde, with hydrazines of formula H2N-NH-A1, e.g. phenyl- or 4-chlorophenyl-hydrazine, treating the resultant hydrazones, as free bases, with a quaternizing agent R4X, and liberating the bases from the salts thus obtained. Quaternizing agents specified are dimethyl and diethyl sulphates, toluenesulphonic acid esters, benzyl bromide and methyl iodide.  They are preferably used in solvents, e.g. acetone, ligroin, benzene or chloroform.  Specified heterocyclic reactants, for the above second preparation of the dyes of the invention, include pyridine- and 6-quinoline-4-aldehyde, acridine-9-aldehyde, azomethanes from 1,4-dimethyl-quinolinium or 9,10-dimethyl-acridinium methosulphates and 4-nitrosodimethylaniline and representative of specified hydrazines are N-phenyl-N-methyl- and -benzyl-, N1N-diphenyl and N-4-chlorophenyl-N-methyl-hydrazines. When azomethanes are used, an acid, e.g. hydrochloric or phosphoric acid, must be present.  The dyes colour textiles, paper and leather, and, those which are free from COOH or SO3H groups, colour materials from polyacrylonitrile. Examples are provided of the preparation of the dyes and their use in dyeing polyacrylonitrile materials in reddish blue or reddish yellow shades.  Specifications 875,995 and 915,139 are referred to.
Patent GB-1469415-A (GB)
Title: Electrostatic particle-analyser
IPC: G01N23/227
Filed: 1974-06-21
Abstract: 1469415 Particle spectrometers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 June 1974 [26 June 1973] 27614/74 Heading H1D In an ion or electron spectrometer of the type in which particles are emitted from a sample 11 as a result of bombardment by a primary beam of radiation 29 and then analysed by an electrostatic field between coaxial cylindrical electrodes 1, 2 and detected at 14, particles not travelling at least approximately in radial planes are eliminated by radial arrays of plates such as 18, 24 within and connected to the inner electrode 2 adjacent either or both of the entrance and exit gaps 7, 8. The radial plates should be at least twelve in number and their inner ends can be connected by a cylindrical support 27.