baber/WOPTO huggingface dataset:
Patent GB-168891-A (GB)
Title: Process for the production of insulating material for electrical purposes
IPC: H01B3/48
Filed: 1921-09-01
Abstract: 168,891. Juchli, E. Sept. 1, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Electric insulating paper; paper, treating with special materials.-In the manufacture of an electric insulating material by mixing resin with paper pulp and working the mixture as usual in making paper, the resin is added to the pulp after partial dehydration, preferably when it is on the felt before couching. Asbestos fibre pulp may be substituted for the paper pulp. Suitable resins are hard natural resins, resins artificially hardened, as colophony heated with formaldehyde, and artificial resins, as cumaron resin or formaldehyde-phenol condensation products.
Patent GB-158297-A (GB)
Title: Improvements in holders for doors and the like
IPC: E05C17/50
Filed: 1919-09-22
Abstract: 158,297. Chadburn, W. R., (Rawlings Manufacturing Co.). Sept. 22, 1919. Door. holders; door stops. -A combined holder and and stop for doors &c. with automatic means for releasing the holder, consists substantially in the following arrangement :- A link 4 has a cam 13 on its underside and a movement-limiting projection 10, and is pivoted between cheek plates 12 which also carry a spring buffer cylinder 15. On opening the door a hook 1 is retained by the link 4, the spring buffer 7 preventing rattle between the parts. To release the holder the door is pushed sharply back, the inclined surface of the hook striking the cam 13, throwing the link 4 up, and thus releasing the door, which is assisted in closing by the compressed spring 6. Either the hook or the link may be secured to the door.
Patent GB-774464-A (GB)
Title: Improvements in or relating to organic esters
IPC: C07D233/22
Filed: 1955-08-12
Abstract: The invention comprises esters of the general formula <FORM:0774464/IV(b)/1> wherein R is a hydrocarbon aryl radical, R1 is a hydrocarbon aryl, hydrocarbon alkyl, hydrocarbon cycloalkyl or S-heterocarbocyclic radical, R11 is H or OH and n is 2 or 3, their acid addition and quaternary ammonium salts and their preparation by reaction of a 2-halomethyl-3,4,5,6-tetrahydro-pyrimidine or a 2-halomethyl imidazoline, or an acid addition salt thereof, with the appropriate acid, preferably in the presence of potassium iodide, with subsequent conversion of the acid addition salt so formed to the free basic ester if desired.  The reaction may be carried out in a solvent such as a lower alkanol or acetone, preferably with heating. In a modification a metal salt of the acid is reacted with an acid addition salt of the basic alkyl halide.  Examples describe the preparation of the following 2-(3,4,5,6-tetrahydropyrimidyl) methyl compounds: alpha-cyclohexyl-alphaphenyl acetate hydrochloride, 1 - phenyl - 1 - hydroxycaproate hydrochloride, benzilate hydrochloride, diphenyl acetate hydrochloride, phenyl-2-thienyl glycollate hydrochloride and alpha-phenyl-alpha-cyclohexyl glycollate hydrochloride; and the following 2-(4,5-dihydroimidazolyl) compounds: alpha - cyclohexyl - alpha-phenyl glycollate hydrochloride, benzilate hydrochloride and diphenyl acetate hydrochloride.  Conversion of the last-mentioned compound to its methochloride is also described.  In a list of further starting materials R can have the additional meanings of naphthyl and xenyl, and R1 the additional meanings of naphthyl, xenyl, methyl, ethyl, propyl, isobutyl, octyl, cyclopentyl and thiopyranyl.  Starting material.  2 - Chlormethyl - 3,4,5,6 - tetrahydropyrimidine hydrochloride is prepared from ethyl chloracetimidate hydrochloride and 1,3-diaminopropane.  Isolation of the free base is also described.
Patent GB-295603-A (GB)
Title: Improvements in optical sound recording and reproducing apparatus
IPC: G03B31/02
Filed: 1927-10-22
Abstract: 295,603. Electrical Research Products, Inc., (Assignees of Pfannenstiehl, H.). May 21, 1927, [Convention date]. Divided on 290,962. Optical apparatus.- In soundrecording or reproducing apparatus of the kind in which a film record is emploved, the film passes over a rotatable drum. or roller having a circumferential opening therein adapted to be bridged by the film. The invention is shown as applied to a soundreproducing apparatus in which the record film 13 is fed from a reel 11 to a take-up reel 12 by mechanism comprising two sprocket-wheels 19, 20, driven as described in Specification 290,962. The wheel 20 is split, thus constituting the roller with a circumferential opening bridged by the film, and light from a source 15, focussed by an optical system 16, passes through the film and through the opening in the divided wheel 20, to a photoelectric cell 14 located within the wheel. An earthed shield 18 is provided to eliminate any effects which might otherwise be produced by electrostatic charges on the film.
Patent GB-1466626-A (GB)
Title: Test element for use in a photo-colourimetric gas analyzer
IPC: G01N31/22
Filed: 1974-05-24
Abstract: 1466626 Test element for photocolorimetric gas analyzer N G AFANASIEV V L ZAITSEN and VP KRUGLOV 24 May 1974 23377/74 Heading G1A and G1B A test element for use in a photocolorimetric gas analyzer is in the form of a tablet which is gastight over its depth and which comprises a uniform mixture of a reagent selective to a component of the gas to be analyzed and a filter inert to the reagent and to the gas mixture. Test elements disclosed comprise: colbalt diiodide dihydrate and polyethylene, bromophenol blue and polyethylene, lead acetate and polyethylene, benzidene and polyethylene. The tablet may be made up of different sectors each comprising a reagent reactive with a different gas, a three sector tablet comprising bromophenol blue and wax, N-phenylanthranilic acid and wax, lead acetate and silica gel. Reference sections may comprise barium sulphate or lead sulphide and polyethylene respectively. Fig. 5 shows the use of the test element in a photocolorimetric gas analyzer. Gas to be analyzed enters at D. The element 1 is mounted in holder 23 for rotation by motor 12 between measurements, scraper knife 13 on rotation of the element removing the top, reacted, layer of the element to expose a fresh surface for the next test. Radiation detectors 15, 16 for the reflected and reference beams respectively serve as arms of a measuring bridge 17. Adjustable diaphragm 19 is used in setting the bridge. The light source in the analyzers of Figs. 3, 4, 7, 8 (not shown) is (14).
Patent GB-657041-A (GB)
Title: Improvements in or relating to dry-shaving apparatus
IPC: B26B19/02
Filed: 1946-08-07
Abstract: 657,041. Dry shavers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 7, 1946, No. 23427. Convention date, Nov. 4, 1942. [Class 131] In a dry shaver, having an apertured cutting plate and a cutting member relatively movable with respect to each other, the thickness of the cutting plate varies, as described in Specification 657,037, and the cutting member can co-operate, in different positions, with different areas of the cutting plate. As shown, a rotary cutting member has cutting edges 8 co-operating with the portions of the slots in the thicker part 7 of the cutting plate and can be reversed so that the cutting edges 9 co-operate with the parts of the slots in the thinner part of the cutting plate. The portions of the apertures which are not being used are blocked by the surface 10 of an annular member 11. In a modification, in one position of the cutting member, a cutting edge co-operates with the entire cutting plate.
Patent GB-403342-A (GB)
Title: Improvements in and relating to fusion welding
IPC: B23K9/30
Filed: 1933-08-23
Abstract: 403,342. Uniting by fusion. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Vars, E. W.; 811, Napier Avenue, Erie, Pennsylvania, U.S.A.). Aug. 23, 1933, No. 23477. Convention date, Aug. 23,1932. [Class 83 (iv).] In fusion welding parts of substantial thickness by a welding agency oscillated across the seam, means are provided for temporarily arresting the welding agency at predetermined distances from the centre of the seam on opposite sides thereof so that the edges of the seam are heated more than the centre. The electrode wire 1 of an automatic arc welding apparatus is fed through a nozzle 6 carried by an arm 12 which is pivoted at 7 on the traversed welding head 3. To the arm 12 is pivoted at 15 a second arm 11 which is oscillated by a connecting rod 10, adjustable crank 9 and change speed gear from a variable speed or other motor 8. The arm 11 is provided with a spring pressed push rod 18 and a slotted spring-pressed pull rod 19 to oscillate the arm 12 in opposite directions. The motion of the arm 12 is arrested by stops 13 adjustable in a slot in a fixed bracket 14 during a portion of the stroke of the arm 11, so as to dwell on the thick edges of the seam. When welding thick parts requiring more than one deposit of metal, the stops 13 are only in action during the deposition of the top layer. On removing or suitably adjusting the stops the electrode may be given the usual sinusoidal movement, or by interrupting the motor 8 or suitably adjusting the crank 9 the oscillating movement may be completely interrupted. In welding parts of different thickness the stops may be so arranged as to produce periods of longer dwell on the metal of greater thickness.
Patent GB-1089244-A (GB)
Title: Dry separator
IPC: B04C5/103
Filed: 1966-05-25
Abstract: 1,089,244. Centrifugal separators. CENTRIFIX CORPORATION. May 25, 1966 [Aug. 17, 1965], No. 23492/66. Heading B2P. An apparatus for separating particles from a gaseous fluid comprises a receiving chamber 3 to which the particle-laden fluid is admitted through an inlet passage 11, generally conical whirl-producing member 8 mounted in the chamber 3, with its apex 10 adjacent the passage 11, for imparting centrifugal movement to the fluid passing therethrough, an intermediate chamber 2, an outlet pipe 18 for particle-free fluid extending from within the chamber 2 through an opening in the chamber wall and connected to a reaction fan 20, and a hopper 4 below the chamber 2 for receiving the separated particles. As shown, the particle-laden fluid entering through the inlet 7 is given an initial whirling movement around a cylindrical member 15 by the passage 11 which is tangentially disposed, the fluid then passing into the interior of the member 8 being imparted a further whirling movement by the blades 12 constituting the member 8. The particles separated by centrifugal force and issuing from the bottom of the member 8 pass via an annular passage formed between the wall of the chamber 2 and a cylinder 16, opened at both ends and secured in the chamber by supports 21, and fall into the hopper 4. The particle-free fluid passes into the cylinder 16 and is removed through the pipe 18, a vortex breaker 17 being provided at the entrance to the pipe 18 to prevent re-entrainment in the fluid stream of any fine particles having entered the cylinder 16. In a modification, Fig. 3 (not shown) the particle-laden fluid enters the apparatus axially so that whirling is produced only by the member (8<SP>1</SP>). The intermediate chamber (26) in this case does not contain a cylinder.
Patent GB-1061707-A (GB)
Title: An arrangement in cutting bit holders
IPC: B23C5/24
Filed: 1965-06-02
Abstract: 1,061,707. Milling-cutters. STORA KOPPARBEGS BERGLASS A.B. June 2, 1965 [June 8, 1964], No. 23523/85. Heading B3K. To position bits 16 in the body 1 of an endmill, the body is secured to a setting plate 3 having a surface 18 co-operating with surfaces 14, 15 on pairs of sliding members 12, 13 to position each bit, the pairs of members being adjusted together by adjustment means 7. The floating member 7 is forced downwardly by a screw 6 to locate the bit against the setting block. The bits are then clamped by wedges and screws 23. Each member 12 embraces a bit and holds it resiliently.
Patent GB-1213776-A (GB)
Title: Overhead cam valve tappets
IPC: F01L1/25
Filed: 1969-05-08
Abstract: 1,213,776. I.C. engine valve gear. GENERAL MOTORS CORP. May 8, 1969 [May 20, 1968], No.23544/69. Heading F1B [Also in Division F2] An hydraulic tappet for an overhead valve and camshaft engine comprises inner and outer cupshaped members 16, 18 in oppositely disposed relationship, with the closed end of the inner member 16 abutting a valve stem 11 and the closed end of the outer member 18 abutting a cam 9, a plunger 20 slidably located within the inner member 16, and a ball valve 26 spring-urged to close a port 25 in the plunger 20. A spring 21 urges the plunger 20 and member 16 apart and maintains a valve retainer cage in position. A fluid reservoir 30 is formed above the port 25 and communicates through notches 31, formed at the top of the plunger 20, with a port 24 formed in the outer member 18 through which oil under pressure is supplied. A resilient diaphragm or sheet metal stamping may be disposed between the inner and outer members 16,18.
Patent GB-991973-A (GB)
Title: Liquid spray coating device
IPC: B05B5/04
Filed: 1962-06-19
Abstract: 991,973. Spray-producers. SOC. ANON. DE MACHINES ELECTROSTATIQUES. June 19, 1962 [June 23, 1961], No. 23570/62. Heading B2F. A centrifugal sprayer device including a rotary member having a surface generally radial to the axis of rotation of the member and means for directing liquid to be sprayed upon said surface whereby the liquid will flow radially outward along the surface by centrifugal force and will be thrown out from a peripheral region thereof in spray form, includes means on said surface defining obstacles which are arranged so as to impede the free radial flow of the liquid in all radial directions around said axis, whereby to improve the uniformity of spray circumferentially of said member. Liquid is directed through a nozzle 4, Fig. 3, on to the curved surface of the hub 2 of a rotating disc 3 and is flung by centrifugal force across the face of the disc and outwards as spray from the periphery 8. Concentric grooves in the face of the disc present obstacles to the movement of the liquid and thus improve the uniformity of the spray. Instead of concentric grooves there may be a spiral 7, Fig. 4. The groove profile is saw-toothed, which formation may have a rounded face. The obstacles may be separate projections and/or recesses 14, Fig. 8a. With a spray head used in an electrostatic coating process, Fig. 7, paint is forced in the direction F to the outer surface of a conical hub 11 and centrifugal force causes it to pass through apertures 12 and creep outwards along the front surface 13, in which obstacles are formed. The paint is flung off as spray from a sharp edge 10 and is electrostatically charged by the application of high D.C. voltage to the outer body 9.
Patent GB-196224-A (GB)
Title: A method of treating sugar cane
IPC: C13B10/04
Filed: 1922-09-01
Abstract: 196,224. Geveke, W. Sept. 1, 1922. Drawings to Specification. Extracting sugar.-Sugar cane is crushed or shredded, so as to separate the fibres without tearing them to pieces, treated with steam or hot water, and pressed in plunger presses at a pressure of about 10,000 lbs. per sq. in., leaving a bagasse containing about 25 per cent of water, and suitable for fuel.
Patent GB-1039964-A (GB)
Title: Light-sensitive diazo compounds and photo-print materials prepared therefrom
Inventor: COX ROBERT JAMES
IPC: C07D295/135
Filed: 1964-06-08
Abstract: The invention comprises compounds of formula <FORM:1039964/C2/1> wherein R is C1- 4 alkyl or 2-hydroxyethyl and X is an anion, or double salts of such compounds.  Starting materials.-3 - Fluoro - 4- dimethylaminoaniline was prepared by hydrogenating 3 - fluoro - 4 - dimethylamino - (2,5 - dichlorophenylazo) benzene; the diethylamino analogue was prepared by hydrogenating N,N-diethyl-2-fluoro-4-nitroaniline which was made by reacting 3,4-difluoronitrobenzene with diethylamine.
Patent GB-994159-A (GB)
Title: Improvements in or relating to high speed printers
IPC: B41J9/04
Filed: 1962-06-20
Abstract: 994,159. Selective printing. POTTER INSTRUMENT CO. Inc. June 20, 1962 [June 22, 1961], No. 23752/62. Heading B6F. Hammer - impression mechanisms.-An electromagnetically-operated hammer 25 is slidably mounted on rods 30, 31 and moved in letter-space direction by a belt 36 driven by pinch roller 39 and capstan 38. The traverse of the hammer assembly is stopped at each printing position by an electrically-operated brake 41- 43 under the control of electrical circuits and signals generated by a transducer carried on the moving hammer frame 26 in conjunction with teeth 35 arranged at letter-space intervals. The belt 36 is driven by further rollers to return the hammer to the beginning of a line. Continuously - rotating type - drum.-As shown in Fig. 1, the hammer-mechanism travels across the columns of type on a continuously rotating drum driven by a motor 9. One complete revolution is made for each hammer position and firing operation to print the required character is determined by a coded disc 10, brushes 13, 14, 17, 18, 19 and logical circuits connected over leads 15, 15, 21, 22, 23. If the characters are staggered on the type-drum the hammer mechanisn may move two or more letter-spaces. Type arranged on an endless band.-As shown in Fig. 2, the type may be arranged on a band 47 with similar control disc and brushes. Control by pulses.-The printers may operate in connection with electronic computors. Specification 994,158 is referred to.
Patent GB-499468-A (GB)
Title: Improvements in thermionic amplifiers
IPC: H03F1/54
Filed: 1938-08-13
Abstract: 499,468. Valve circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 13, 1938, No. 23937. Convention date, Aug. 16, 1937. [Class 40 (v)] The indirectly heated cathodes of a main amplifier 21 physically separated from a preamplifier stage are heated from a separate winding 6 of the mains transformer 1 of the pre-amplifier. This mains transformer also supplies the normal anode and heating voltages of the pre-amplifier. The switch 11 can be placed in either of two positions V, B ; in the former position V only the heater circuits of the pre and main amplifiers are energized, but in the latter position B, contacts 9 and 10 are closed to energize the mains transformer of the main amplifier and to complete the anode circuit of the pre-amplifier respectively. The winding (i can be arranged to be opened when the contacts 9 are closed if required.
Patent GB-244215-A (GB)
Title: Improvements in or relating to gas or oil power plant
IPC: F02G3/02
Filed: 1924-10-09
Abstract: 244,215. Bailey, R. W., and Metropolitan-Vickers Electrical Co., Ltd. Oct. 9, 1924. Addition to 232,278. Four-stroke engines.-In gas or oil power plant as set out in claim 6 of the parent Specification wherein two cylinders have their pistons rigidly connected together, the cylinders being used to generate products of combustion under pressure which are expanded in other cylinders, the products of combustion are wholly removed at the end of each cycle by air at a pressure slightly above that of the products. In Fig. 3 only one cylinder of a pair is shown, the front end 4 being used as a pump. Air or combustible mixture is drawn in through the valve 13 and delivered to the two reservoirs 11, 12<a>, the pressure in the reservoir 12a being higher than in the other reservoir. The delivery to the reservoir 12a is controlled by a valve 14 connected to a piston subjected to the pressure of the products of combustion. An explosion having taken place the valve 10 is opened on the exhaust stroke to allow the products to escape; towards the end of the exhaust stroke or at the commencement of the induction stroke the high pressure air from the reservoir 12a is admitted through the valve 9 to scavenge the cylinder. After the valves 9, 10 are closed charge air is admitted from the reservoir 11, which air is compressed to ignition temperature on the return stroke of the piston. Fuel is injected from the nozzle 7. The valve 12 admitting to the reservoir 11 may be in the cylinder end. Combustible mixture may be compressed into the two reservoirs, or instead of the front ends of the cylinders independent pumps may be used to compress air, mixture or air and gas separately. Stage compressors may be used; or the high pressure air for scavenging could be obtained by trapping a part of the charge air from the power chamber during the compression stroke, the trapped air being led to a chamber in valve communication with the power chamber. Each cylinder may have oppositely moving pistons. According to the Provisional Specification the charge air may be admitted at atmospheric pressure.
Patent GB-1217223-A (GB)
Title: Rear-view optical system
Inventor: MORAIS CESARE
IPC: B60R1/10
Filed: 1968-05-21
Abstract: 1,217,223. Rear view observation devices for vehicles. C. MORAIS, and V. RONCHI. 21 May, 1968 [23 May, 1967], No. 24219/68. Heading B7J. [Also in Division G2]  A rear view optical system for a vehicle comprises an objective located adjacent the vehicle rear window F 1 , Fig. 4, a convergent lens system for transferring an image from the objective to a viewing mirror S 3  placed in front of the driver, all or part of the system being mounted in a duct C which traverses the vehicle roof and having an overall length of about 3680 mm., the optical system and the duct being rectangular in cross-section the longest side being horizontal. Fig. 2 shows a rear view optical system for a vehicle in which the objective L 1  may be a lens having a spherical and a non-spherical surface, a pair of lenses spaced along the optical axis or cemented together, a spherical or non-spherical mirror or system of mirrors, the convergent lens system L 2 -L 5  having spherical or non-spherical surfaces, and the mirror S 1 , 2  being flat, concave or convex, spherical or non-spherical or comprise a system of mirrors. The system may be biocular enabling the viewer to see the image with both eyes, or may comprise two optical systems side by side for binocular vision, and may include prisms for diverting the path of the light to follow the contours of the roof.
Patent GB-615847-A (GB)
Title: Improvements in or relating to the manufacture of riboflavin
IPC: A61K31/525
Filed: 1946-08-15
Abstract: Riboflavin is manufactured by inoculating with Eromothecium Ashbyii, a sterile culture medium containing 1-10 per cent of lentils known as Lens esculenta and from 0.5-10 per cent fermentable carbohydrate, e.g. dark brown sucrose by which means the pH of the fermenting solution is controlled, incubating said medium and obtaining riboflavin therefrom.  The culture medium may also contain ammonium ions in the form of ammonium acetate, succinate or fumarate. Detailed examples are given of carrying the invention into effect. Specifications 591,321 [Group II], 593,027 and 594,015 are referred to.
Patent GB-332087-A (GB)
Title: Improvements connected with tuning pins for stringed musical instruments
IPC: G10C3/10
Filed: 1929-08-08
Abstract: 332,087. Tadgell, G. Aug. 8, 1929. Tuning-pins for pianofortes and other stringed instruments. -The forward part of the hole 4 for a tuning-pin 6 is parallel sided, and the rear part is expander conically to receive a split collar 7 of wedge section which is driven in to grip the pin. To obtain the increase in thickness of the metal of the collar, either the internal or external diameter may vary. The pin, collar, and hole may be enamelled to produce smoothness and to prevent rusting.