baber/WOPTO huggingface dataset:
Patent GB-758311-A (GB)
Title: A process for preparing fluorosilanes and fluorosiloxanes
IPC: C07F7/12
Filed: 1954-11-11
Abstract: Fluoro-silanes and siloxanes are prepared by reacting a siloxane having the unit structure <FORM:0758311/IV(a)/1> , a silane of the formula RmSi(OR1)4-m, or a silanol of the formula RxSi(OH)4-x with boron trifluoride etherate and, if desired, diethyl ether; R being a saturated aliphatic or aryl hydrocarbon or halogenated hydrocarbon radical, n is 1 to 3, R1 is a monovalent hydrocarbon radical, m is 0 to 3 and x is 1 to 2.  Many examples of starting materials are given. Reaction proceeds at room temperature but heating to 126 DEG  C. is preferred.  In the examples: (1) trimethylfluorosilane is prepared from hexamethyldisiloxane and BF3.Et2O; (2) phenylmethyldifluorosilane is obtained using phenylmethyldiethoxysilane; (3) dimethyldifluorosilane and sym. difluorotetramethyldisiloxane are prepared from octamethylcyclotetrasiloxane; (4) chloromethyldimethylfluorosilane and trimethylfluorosilane are prepared from chloromethylpentamethyl disiloxane; chloromethyldimethylfluorosilane from bischloromethyltetramethyldisiloxane; ethyldimethylfluorosilane from symdiethyltetramethyl disiloxane; and triethylfluorosilane from hexaethyldisiloxane; (5) triethyltrifluorosilane is obtained from trimethylethoxysilane; (6) silicon tetrafluoride is obtained from ethyl orthosilicate; (7) triethylfluorosilane is prepared from triethylsilanol; (8) partially condensed chlorophenylsiloxanes react forming chlorophenyltrifluorosilane; (9) octadecylmethyldifluorosilane is prepared from octadecylmethylsiloxanes.
Patent GB-1054248-A (GB)
Title: Proximity Detector
Inventor: GAMON ROGER VICTOR
IPC: H03K17/955
Filed: 1962-08-24
Abstract: 1, 054, 248. Proximity detector. BURNDEPT Ltd. Aug. 26, 1963 [ Aug. 24, 1962], No. 32705/62. Heading G1N. [ Also in Division H3] A Piezo-electric crystal 20 may be inserted in the oscillator circuit of an electronic proximity detector either where shown or in jack 22, so that the circuit will oscillate either because of the presence or because of the absence of material (e. g. water) in the neighbourhood of a capacitive probe connected to a socket 18 in an L-C circuit 12, 14, 16. When the circuit oscillates, a voltage is produced across a coil 32 and a transistor 30 energizes a relay 40. The detector may be made to "fail safe" by arranging that a danger condition which it is to detect shall lead to de-energizing of the relay.
Patent GB-1092618-A (GB)
Title: Electrophotographic process
IPC: G03G13/04
Filed: 1966-07-21
Abstract: 1,092,618. Photoconductive composition. INTERNATIONAL BUSINESS MACHINES CORPORATION July 21, 1966 [July 26, 1965], No 32707/66 Heading H1K [Also in Division G2] A photoconductive composition comprises an organic photoconductor a dyestuff sensitizer and an activator selected from the group consisting of carboxylic acids, and their anhydrides, nitrophenols and nitro anilines. In the specific embodiments, the photoconductors are polyvinyl carbazole; 1 - phenyl - 3 - (41 - dimethyl amino styryl) - 5 - (4<SP>11 </SP>- dimethylaminophenyl) pyrazoline; 1,3 - diphenyl - 5(41- dimethylaminophenyl) pyrazoline; 1,3,5 - triphenyl pyrazoline; 1,3,4,5 - tetraphenylimidazole - 2 - thione and 1 - formyl (2,5 - bisp - dimethyl aminophenyl) 1,3,4 - triazole; the dyestuffs Malachite Green, Victoria Blue B, and Ethyl Violet and the activators 3,5-dinitrobenzoic acid; tetrachlorophthalic anhydride; 6,61 - tetranitrodiphenic acid; 2,2<SP>1</SP>,4,4<SP>1</SP>,6,6<SP>1</SP>- hexanitrodiphenylamine and picric acid. Resin binders such as PVA and polystyrene are exemplified whilst many others are listed. Lists of suitable polymeric and monomeric photoconductors, sensitizing dyes and activators are given. The composition may be coated on to a support of Cu, Al, Zn, Sn, Pb, Fe, paper, Cu, or Al-coated polyethylene terephthalate, or Nesa-glass. The compositions disclosed exhibit persistent polarization when exposed image-wise and are then charged electrostatically. The persistent conductivity pattern is erased by heating to 100-150‹ C. for 5 seconds.
Patent GB-808686-A (GB)
Title: Improvements in or relating to devices for guiding travelling webs
Inventor: THORNTON JOHN WILLIAM NOAH
IPC: B65H23/02
Filed: 1956-10-26
Abstract: 808,686. Guiding webs transversely. ILFORD Ltd. Sept. 12, 1957 [Oct. 26, 1956], No. 32737/56. Class 100(1) A device for maintaining a travelling web in a predetermined lateral position comprises a cylindrical member 6 around which the travelling web 5 passes and a pair of arms 7, 8 between which the member is mounted, the arms projecting in opposite directions from a coupling rod 9, the application of unequal forces to the ends of the cylindrical member by the travelling web causing the member 6 to tilt to equalize the forces. The rod 9 is pivotally mounted in bearings 10 secured to a frame 11. In operation, if one edge of the web has a greater tension applied to it then the other edge, the end of the member 6 which is subjected to the greater pull moves in the direction of the pull, such that the arm 7 or 8 tilts in the same direction. For example, if the arm 7 is moved in this manner the arm 8 will be lowered, thereby reducing the tension at the edge adjacent the arms 7 and increasing the tension at the edge adjacent the arm 8. The arms 7, 8 may support the member 6 by self-aligning bearings of plain bearings the axes of which are in line with the member 6. A counterweight 12 on the rod 9 balances the weight of the member 6 and arms 7, 8.
Patent GB-825074-A (GB)
Title: A new or improved process for the separation of the fibres from the bark, wood and other tissues of fibrous plants
IPC: D01B1/10
Filed: 1955-10-27
Abstract: 825,074. Obtaining fibres from plants. TURNBULL, R. H. Oct. 26, 1956 [Oct. 27, 1955], No. 32754/56. Divided out of 822,323. Addition to 721,878. Class 120(1) The process of obtaining fibres from plants claimed in the parent Specification is modified in that the treatment of the plant portions with the cytase liquor is carried out under pressure. The pressure may be between 15 and 75 lbs./sq. in. and the temperature may be between 20‹ and 30‹ C. Continuous circulation of the liquor is advantageous.
Patent GB-951871-A (GB)
Title: Improvements in and relating to method and device for protecting the bottom and the lateral wall of an ingot mould when pouring
IPC: B22D7/12
Filed: 1962-08-27
Abstract: 951,871. Casting processes. H. J. DAUSSAN. Aug. 27, 1962 [Sept. 5, 1961], No. 32773/62. Heading B3F. A device for protecting the sides and bottom of an ingot mould during top pouring comprises a float A having cavities on the bottom face, an air cushion B supported thereby, and a screen C extending upwardly.
Patent GB-508357-A (GB)
Title: Improvements in or relating to hair drying hoods
IPC: A45D20/18
Filed: 1938-11-11
Abstract: 508,357. Hair-drying hood. FEHLMANN, H. Nov. 11, 1938, No. 32883. Convention date, Nov. 11, 1937. [Class 81 (ii)] A hair-drying hood has outer and inner walls 7, 9 enclosing a space 12 to which hot air is admitted by a connection 5. The inner wall has air discharge openings 8, and there are slots 10 extending right-through the hood. The main portion of the hood is of flexible material but may' have a wire framework to keep the walls apart. The upper portion 1 at which the air connection is made is of rigid material and, may be integral with the electric motor supplying the air.
Patent GB-1479251-A (GB)
Title: Method and apparatus for blow moulding
IPC: B29C49/78
Filed: 1975-08-07
Abstract: 1479251 Blow-moulding; control of parison length MONSANTO CO 7 Aug 1975 [8 Aug 1974] 32991/75 Heading B5A In an extrusion blow-moulding apparatus in which an extrusion head 12 extrudes a freely pendant thermoplastic parison into each of a plurality of moulds 26 which are presented successively thereto, the distance by which the pendant end 75 of the parison protrudes beyond the end of the closed mould is measured by detectors (e.g. photoelectric cells) 62, 64 and the rate at which moulds are presented to the head is increased or decreased by suitable control of the indexing unit; when the rate of presentation of moulds increases, a shorter time elapses between successive mould closures for extrusion of a parison, so that the length of the parison is reduced, and vice versa. Two light transmitting and receiving cells 62, 64 (Fig. 4, not shown) are mounted on a platform vertically adjustable along a screw (63) and the light beams are reflected from a surface (80) on the mould clamping mechanism.
Patent GB-615446-A (GB)
Title: Improvements in or relating to electric discharge tube arrangements for operation atvery high frequencies
IPC: H01J19/80
Filed: 1945-12-06
Abstract: 615,446. Thermionic valves. PHILIPS LAMPS, Ltd. Dec. 6, 1945, No. 33015. Convention date, Nov. 14, 1940. [Class 39 (i)] The electrodes of a valve, particularly for ultra - high - frequencies, or their supports are sealed into the envelope by a glass seal of cellular structure consisting of at least 5 per cent of fine bubbles and having a specific gravity at least 5 per cent lower than that of the glass in a homogeneous condition, and are continued outside the envelope to form the elements of an oscillatory circuits. In the triode arrangement shown, the support wires of the grid 3 and the cylindrical anode 4 are sealed preferably without change of section through the cellular glass closure 5. Preferably, the indirectly-heated cathode 2 is sealed without change of section through the closure at the same time as the other electrodes and simultaneously with the closure of the envelope 1. The external oscillating circuit is formed by the extensions of the anode and grid supports, and the latter may be wound with a wire or may carry a metal tube 7 to equalize the internal and external capacity of the circuit. Tuning is effected by a slider 9. In modifications, the arrangement of the electrodes may be reversed, and may comprise one or more anodes surrounded by one or more cathodes. An arrangement for push-pull operation is referred to in which two grids and two anodes are disposed on either side of a common cathode. The cellular glass closure is used at both ends of the envelope, and the grids are sealed through one and the anodes through the other. Specifications 603,489, 604,245 and 615,477, [all in Group XXXVI], are referred to. The subjectmatter is identical with that of Specification 552,700.
Patent GB-900635-A (GB)
Title: Apparatus for separating or winnowing tobacco and other like fibrous materials
IPC: A24B5/10
Filed: 1958-10-16
Abstract: 900,635. Treating tobacco. KÍRBER, K. Oct. 16, 1958 [Dec. 24, 1957; March 1, 1958], No. 33033/58. Class 130. [Also in Group II] Apparatus for separating tobacco or other fibrous material by rising air streams comprises at least two upwardly diverging separating chambers in inclined positions, one above the other, with an obliquely upwardly-inclined separating wall between them having passages therethrough, means being provided near the base of the upper chamber to admit the fibrous material to be separated. As shown, tobacco is ripped at R, fed through a hopper 16 into an air stream flowing in a pipe 14 and carried upwards in a diverging chamber 2, coarser particles which fall from the air stream passing through opening 19, 20 into a chamber 3 supplied with air from a pipe 15, and coarser particles which fall in this chamber passing through openings 23, 24 to an offtake means 4 and conveyer 25 to a further treatment machine. The air and remaining finer particles are drawn through an extractor chamber 5 where leaf falls into offtake means 6 leading to a conveyer 36, dirt and residues pass through a grating 28 to a container 30 while the air and dust pass through a filter or screen 26 to cyclones 8 and 9 to extract the dust which is then removed by a screw 10. The air is recirculated by a fan 11, is heated at 12 and may be moistened by a moistening device (not shown). The provision of such a heating device and a moistening device is claimed in Specification 900,637. The overall air flow is controlled by a main valve 31 and the air is divided between the pipes 14 and 15 by a distributer valve 32 so aa to obtain a satisfactory separating action in the chamber 3. Minor adjustments in air flow in the chamber 2 are effected by operating a valve 34 between the pipe 14 and a compensating duct 33 which communicates at its upper end with the chamber 2 by openings 35. The provision of this compensating duct is claimed in Specification 900,936. A screening drum (Fig. 2, not shown) may be used instead of the simple screen 26. Further, the apparatus may be modified so that there is no recirculation of air.
Patent GB-959215-A (GB)
Title: Improvements relating to electric cables
Inventor: HEWETT NORMAN BASIL
IPC: H01B9/06
Filed: 1961-09-14
Abstract: 959,215. Electric cables. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 20, 1962 [Sept. 14, 1961], No. 33033/61. Heading H1A. A power cable has a central duct 1 for cooling fluid defined by trapezoidal conductors laid up helically. The fluid is able to pass through the interstices of these trapezoidal conductors to further conductors 3 surrounding them. As shown, these further conductors are circular in cross-section but may also be trapezoidal. A liquid-retaining tube 4 of P.V.C. or P.T.F.E. composition surrounds the conductors but may be omitted if the insulation 5 is such as to retain the cooling fluid without being affected by it. The cable may be provided with an outer screening and/or reinforcing layer of P.V.C. sheath or tape and/or carbon-loaded fabric tape.
Patent GB-404252-A (GB)
Title: Improvements in fuel injection mechanism for internal combustion engines
IPC: F02D1/00
Filed: 1933-11-27
Abstract: 404,252. Fuel-injection pumps. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Nov. 27, 1933, No. 33095. Convention date, Dec. 6, 1932. [Class 102 (i).] A fuel-injection pump is driven through a coupling comprising a flange 16 with guides 15 supporting a nut 14 with helical teeth engaging the other part of the coupling. A governor 17 mounted upon the cam-shaft 10 actuates through a lever 19 a rack 12 to rotate the plungers and determine the point of the stroke that an inclined edge on the plunger causes delivery to cease. The governor is loaded by a spring 21 and the abutment 24 is adjusted by a lever 23 to vary the spring loading. The lever 23 is connected to the lever 27, for varying the position of the nut 14 and thus the time of beginning of injection, by a resilient coupling comprising a plate 32 connected to the lever 27 and a cylinder 28 connected to the lever 23 with an interposed spring 30. The end of the spring 30 is spaced from the end 34 of the cylinder and the plate 32 is so positioned that for the lower speed ranges, the time of injection remains constant, but in the higher ranges it is varied with the governor loading ; and also that the time of injection may be fully advanced by the lever 27 at starting.
Patent GB-428088-A (GB)
Title: Improvements in or relating to footwear
IPC: A43B7/22
Filed: 1933-11-27
Abstract: 428,088. Foot-arch supports. HAIG, D. M., 429, Tower Building, Water Street, Liverpool.-(Perth Shoe Co., Ltd. ; Perth, Ontario, Canada) Nov. 27, 1933, No. 33098. [Class 81 (ii)] [See also Group VII] The insole surface of a foot - corrective construction of footwear is given a slope from one side to the other by longitudinally spaced pads which taper from one side of the footwear to adjacent the longitudinal centre line, the pad at the forward area underlying the ball portion of the foot. The pads may be attached, e.g. by cement, to the inner surface of the insole, or, as shown at 15, 16, placed between flaps 17, 18, 19, 20 formed by splitting the insole C at its forward and heel ends 10, 12 respectively. An arch supporting pad may be positioned on an area 19 of the insole at the foot arch. Alternatively, the pads may be placed under the insole between the inner and outer soles. In the case of turn shoes, the pads are applied to the inner surface of the outsole.
Patent GB-792865-A (GB)
Title: Improvements in or relating to aircraft
Inventor: GLENNY ARTHUR PHILIP
IPC: G05D1/00
Filed: 1954-11-16
Abstract: 792,865. Aircraft controls and indicators. SPERRY GYROSCOPE CO., Ltd. Nov. 2, 1955 [Nov. 16, 1954], No. 33168/54. Class 4. A safety device providing a signal when an aircraft turns about an axis at a rate in excess of a predetermined rate for an interval of time dependent on the rate, comprises turn responsive means producing, in response to a rate of turn in excess of the predetermined rate, an output quantity increasing from zero to a predetermined magnitude in a time interval which is less, the greater the rate of turn, the signal being given when the output quantity reaches the said magnitude, and comprises means for returning the output quantity towards zero when the rate of turn drops to less than the predetermined rate. In Fig. 2, a casing 30 supports through bearings 31, a shaft 32 to which are secured a gyroscopic rotor 33 and a partspherical member 34 serving as the rotor of an induction motor and co-operating with a stator 35 having three coils 36 (two shown) energized from a three-phase supply. The casing 30 is universally mounted about the aircraft pitch and roll axes, and an extension 39 engages a pad 40 normally keeping contacts 41, 42 closed. If the aircraft turns about one of the casing axes, a force is applied to the rotor to precess it to the centralized position with respect to the stator 35. This precession has a maximum rate, and thus if the aircraft turns at a rate in excess of a predetermined rate, misalignment between the rotor axis and the stator occurs, which misalignment steadily increases, until contacts 41, 42 are opened, giving a warning signal. When the rate of turn drops to less than the predetermined rate, the rotor can re-ceritre itself. In Fig. 3, a rate of turn gryoscope 50 drives a wiper 52 deriving a D.C. signal from potentiometer 55 representing the rate of turn. This signal energizes a motor 56, and is also applied to a magnetic clutch coil 61, so that when the rate of turn is in excess of a given value, the clutch is put in, and the motor drives a lever 62 at a rate proportional to the rate of turn of the aircraft. When lever 62 makes contact 64, a relay 65 is energized to give a warning. Should the rate of turn drop below the given value, the clutch is de-energized, and a spring 63 returns lever 62 to its starting position. In Fig. 4, the wiper 52 contacts a conducting segment 70 and derives a zero output while the rate of turn is less than the given value, and contacts potentiometers 71 or 72 when the rate of turn is greater than the given value. Any resulting signal is fed to an integrating resister-capacitor combination 75, 76. and thence to a relay 65. In Fig. 5 (not shown) a similar arrangement is used to energize a slugged relay, which replaces the R-C combination and ordinary relay of Fig. 4. In either case, the relay energizing signal drops to zero when the rate of turn drops below the predetermined rate. The final signal is used to actuate a warning device or to cut out the servomotor of the relevant control system.
Patent GB-934432-A (GB)
Title: Improvements in or relating to air humidifying apparatus
IPC: F24F6/04
Filed: 1958-10-17
Abstract: 934,432. Air humidifiers. WATKINS & WATSON Ltd., and F. E. M. DUCKER. Oct. 8, 1959 [Oct. 17, 1958], No. 33256/58. Addition to 838,777. Class 55 (2). In a modification of the parent Specification the air humidifier comprises a casing 10 with an air inlet 12, an electric motor 21 driving a fan 19 and a flinger 20 which distributes water over pieces of broken pumice or like material packed in the annular space between two cylinders 14a made of wire netting, the air to be humidified passing through the wetted packed material to an outlet 13. The flinger 20 consists of a truncated-triangular portion 20a of sheet metal having two flanges 20b and perforations 24 so that water travelling from the pot 35 up the channels formed between the portion 20a and the flanges 20b is flung on to the packing material. Water contained in the bottom of the casing is fed into the pot 35 through metering holes 36 and floats are arranged to operate a water supply and to cut out the motor in the event of a failure of the water supply. The air inlet 12 and the motor 21 may be surrounded by a sound-damping as shown and the humidified air may be added in a proportion controlled by a humidistal to air which has not passed through the humidifier.
Patent GB-381391-A (GB)
Title: Improvements in safety razor blades
IPC: B26B21/56
Filed: 1931-12-01
Abstract: 381,391. Safety-razor blades. LœBBERTSMEIER, A., 15, Sternstrasse, Barmen, Germany. Dec. 1, 1931, No. 33273. [Class 30.] A thin safety-razor blade is stiffened by pressed or hammered depressions a over its entire area excluding the ends e for apertured blades, and including them for slotted blades. The blade is thereby provided with a fibrous structure which is transverse to the longitudinal fibres produced during rolling the ribbon from which the blade is severed. The transverse stiffness may be further increased by again pressing or rolling, partly to flatten the boundaries c, Fig. 2, of the depressions, to the form c<1>, Fig. 4. The blade material may be of a lower grade and harder than usual, and the blade edge does not vibrate during shaving.
Patent GB-1384148-A (GB)
Title: Trouser presses
IPC: D06F71/29
Filed: 1972-07-18
Abstract: 1384148 Trouser presses IBIS ENGS Ltd 9 July 1973 [18 July 1972] 33444/72 Heading D1A A trouser press comprises a vertical shaft 2 mounted in a central housing and supporting three radial arms 3 from each of which depends a pressing assembly 7 on which a pair of trousers A may be mounted surrounding a perforated steam chest 12, the arms and pressing assemblies being indexable between, an unloadable, a loading, and a pressing station where a box 8 of the pressing assembly registers with a fluid duct 51 and pressing heads 57 (Fig. 2) are moved substantially horizontally against the registering pressing assembly 7 and a pair of trousers thereon. Each pressing assembly 7 (Figs. 1, 5) is rotatable through 90 on a telescopic depending rod 6 relative to the respective arm 3 by a ram 60 and is movable vertically by a ram 6 and comprises the box 8 supporting a fixed arm 9 and a movable arm 10, with a waistband hook 11, interconnected by a flexible tube 21.  In use a pair of trousers A is placed against the arms 9, 10 and held there by fingers 9a, 10a with the waistband on the hook 11, the arm 10 is moved to tension the trousers, vacuum is applied from a pipe 56 through porous surfaces of the arms and the fingers 9a, 10a are retracted. The arms are indexed 120 by a ram 30-pivoting an arm (31) (Fig. 4, not shown) with a yoke (32) which engages and pushes a peg 33 on a disc 34 attached to the shaft 2 until the box 8 registers with the duct 51 when a fan 49 successively blows hot air from a  heater 50 and steam from a steam chamber 49a through the duct 51 and into the steam chest  12 and the centre of the trousers and steam is passed through a tube 55, down the arm 9, through the tube 21 and up the arm 10 for  the leg creases. After pressing vacuum is again applied to the arms and the pressing assembly indexed to the unloading station.