baber/WOPTO huggingface dataset:
Patent GB-458516-A (GB)
Title: Improvements in and relating to braking means for cranes, hoists and the like
IPC: B66D5/00
Filed: 1935-07-17
Abstract: 458,516. Electrically and centrifugally controlled brakes. BENTLEY, J., and GALLOWAY, H. L., Edenbank, Lenzie, Dumbartonshire. July 17, 1935, No. 20353. [Class 103 (i)] Means for controlling the application of a brake for hoists &e. wherein the brake is loaded as by a spring comprises an electric motor driving a centrifugal device which is connected to the brake operating mechanism through a resilient means so that by varying the speed of the motor a varying force is transmitted to the resilient means which more or less counteracts the load. The centrifugal device comprises upper and lower sets of balls 7 disposed between a stationary conical disc 10 and an axially slidable conical disc 9. Races for the balls comprise members 2, 3 keyed to the shaft 1<1> of the motor 1 and provided with radial ribs 4. The disc 9 is carried by a member 13 slidable in the part 22a of the casing 11 and between this member and a member 17 also slidable in the casing is a spring 23. The member 17 is screwed on to a rod 14 which is slidable in the member 13 and which carries a conical clutch member 19. Balls 25 are disposed between the member 19 and a casing 24 which forms the other clutch member and to which by means of a bridge-piece 26 the brake operating levers 27 are connected. The brake is applied by a weight. The balls 25 normally rest on the top of the part 22a so that the clutch is disengaged thus permitting the part 24 and the brake levers 27 to take up a position in which the brake is applied irrespective of the wear of the brake shoes. When the motor 1 is started, the centrifugal device first moves the rod 14 through the member 13 and spring 23 so that the parts 19, 24 are clutched together and pressure is then transmitted to the levers 27 tending to release the brake, the spring being compressed as the speed of the motor increases until the weight is completely overcome. The brake may instead be normally held in the " off " position and be applied by the motor. The speed of the motor may be automatically controlled as described in Specification 439,286, [Group XXXVII].
Patent GB-757092-A (GB)
Title: Improvements in or relating to the manufacture of screens for cathode ray tubes
IPC: H01J9/227
Filed: 1953-07-22
Abstract: 757,092. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., and HILL, R. T. J. July 20, 1954 [July 22, 1953], No. 20371/53. Class 39 (1). In the manufacture of a screen for a cathode-ray tube in which different parts of the screen are required to emit light of different colours when excited by the cathode rays, there is applied to a glass base 1 of the screen a transfer consisting of differently coloured light filter media mounted on a sheet 2 of heat-dispersible material in a pattern, the glass base is heated to disperse the sheet and cause the filter media to adhere to the glass base, and there is applied to the glass base directly over the filter media a layer of a phosphor or mixture of phosphors adapted when excited by cathode rays to emit light whose spectral band contains wavelengths of all the required different colours. Preferably for a colour television receiver tube there is applied a sequence of strips of silver paint S, and red, blue and green tinted enamel R, G, B on a nitrocellulose sheet 2 which is attached to the glass plate by means of a volatile adhesive. The tinted enamel may consist of tinted lead borate powder in a volatile suspending medium. The layer of phosphor deposited over the filter should be sufficiently thin to allow some electrons to penetrate to the conducting strips S which are connected together on either side of the screen.
Patent GB-136241-A (GB)
Title: Improvements in Roller Bearings.
Inventor: ALEXANDER WILLIAM
IPC: F16C33/54
Filed: 1918-12-09
Abstract: 136,241. Alexander, W., and Macphall, K. W. H. Dec. 9, 1918. Roller bearings.-The rollers of a roller bearing are spaced by a cage ring 1 having a number of inclined or tangential slots 2 to receive central reduced necks 3 on the rollers 4. One of the slots 2a is longer than the others to enable the final roller to be inserted in the cage. The cage is surrounded by a housing 5 and is confined by liners 6, 6a, one of which may be integral with the housing.
Patent GB-291640-A (GB)
Title: Improvements in and relating to devices for injecting fuel in internal combustion engines and the like
IPC: F02M61/08
Filed: 1927-08-02
Abstract: 291,640. Groves, W. W., (International Motor Co.). Aug. 2, 1927. Cylinders receiving liquid fuel.-In a fuel injector the valve member b<5> which is a eonieul extension of the spindle b engages a seat b<7> of different conicity so that line contact is obtained. The faces of the valve and seat are preferably at angles of 20‹ and 30‹ respectively to the axis of the spindle in which are grooves b<4> for the admission of the fuel. A conical extension b<6> has a face making an angle of 10‹ with the closure member.
Patent GB-1353865-A (GB)
Title: Electric supply system and an electrically-powered vehicle therefor
IPC: B61C3/02
Filed: 1972-05-02
Abstract: 1353865 Supply systems for electricallypropelled vehicles MASCHINENFABRIK AUGSBURG-NURNBERG AG 2 May 1972 [3 May 1971] 20414/72 Headings B7H and B7L An electricity supply system for supplying a tram or bus comprises stretches of electricallylive rail or wire for supplying current to the vehicle, and selected sections of electricallydead rail or wire whereat the vehicle is powered by electric power storage means in the vehicle, the selected sections of electrically-dead rail or wire being at branchings or cross-overs where the construction of the rails or wires would otherwise be complicated. As shown a rail 2 projecting slightly above the surface of a roadway 1 is contacted by a current collector 3 articulately suspended beneath a vehicle 5. The vehicle carries storage batteries from which it is supplied through automatic switching means when it leaves the rail or is running over an electrically-dead section.
Patent GB-1299644-A (GB)
Title: Pneumatic conveying of an article
IPC: B61B13/12
Filed: 1970-04-28
Abstract: 1299644 Pneumatic conveyers INCREST-INSTITUTIL PENTRU CREATIE STIINTIFICA SI TEHNICA 28 April 1970 [6 June 1969] 20468/70 Heading B8A Apparatus for use in the pneumatic conveying of an article comprises a series of nozzles to each of which a conduit 10, 11 or 21 is attached which extends into the adjacent upstream nozzle, each said nozzle being connected to compressed air feed reservoirs 18 by conduits 8 such that when an article is approaching the end of a conduit 10, 11 or 21, compressed air is discharged through the conduit 8, an annular chamber 7 and passage 5 and is deflected towards the neck 4 of a nozzle thereby sucking the article towards and into conduit 11 or 21 of the next downstream nozzle, setting up an air cushion 17 about the article 16. The compressed air discharges can be effected by means of electromagnetic valves, Fig. 4 (not shown), connected between compressed air supplies and the conduits 8.
Patent GB-1189048-A (GB)
Title: Process for Preparing Aminonitriles
Inventor: MORGAN CHARLES ROBERT
IPC: C07C255/24
Filed: 1968-04-30
Abstract: 1,189,048. Process for preparing aminonitriles. W. R. GRACE & CO. 30 April, 1968 [8 May, 1967], No. 20475/68. Heading C2C. Process for the preparation of an aminonitrile which comprises the steps of (1) reacting a mixture of an amine, formaldehyde and hydrogen cyanide in the presence of an acid catalyst which is preferably sulphuric acid present in amounts varying from 1À5 to 20% by weight, and thereby generating heat; (2) removing heat from a reacted mixture obtained from said reaction, preferably by indirect heat exchange with a heat-transfer liquid circulating in indirect heat exchange relationship, (3) transferring said heat to an initial mixture of said reactants to raise the temperature thereof to a temperature in the range 40-130 C. and (4) feeding said heated mixture to a reaction zone for step (1). Preferably conditions are such that over the whole of the reaction time there is no net transfer of heat to or from the reaction mixture and that the reaction is carried out under autogenous pressure. The amine, formaldehyde and hydrogen cyanide reactants are preferably combined in a ratio of 1: 3: 3 up to 1: 3À6: 3À6.
Patent GB-186039-A (GB)
Title: Improvements in sustaining and steering surfaces for aerial vessels
IPC: B64C3/00
Filed: 1922-07-27
Abstract: 186,039. Soc. Industrielle des MÚtaux et du Bois, (Assignees of Etablissements A. Bernard). Sept. 16, 1921, [Convention date]. Planes, construction of; tanks, disposition of. - Wings or like parts are built up of separate boxes or cells extending in the direction of spread and attached together by rivets or bolts passing through the contiguous sides of the boxes. The upper and lower sides of the boxes constitute the wing surfaces. The boxes are formed of sheet aluminium, or an alloy thereof, the thickness of which varies according to the position the boxes occupy in the wing. The trailing edge and lateral edges (not shown) are strengthened by rows of rivets. In a modification, one contiguous side of a box is made continuous and the other side is flanged. Continuous adjacent sides may be lightened by perforations. Gaps may be provided in the trailing edge for the attachment of ailerons. One of the forward boxes may be utilized to house fuel tanks, which may be placed in position or removed through a closable opening in the upper surface. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also a wing construction in which the wings are formed in a cellular manner from upper and lower plates with downwardly and upwardly projecting flanges which are rivetted to partition plates d, Fig. 4 (Caneclled). Diagonal bracing pieces e are also provided. Thissubject-matter does not appear in the Specification as accepted.
Patent GB-358505-A (GB)
Title: Improvements in or relating to roll-film cameras
IPC: G03B19/04
Filed: 1930-07-08
Abstract: 358,505. Rollfilm cameras. WIDMANN, W., 8, Karlstrasse, Freudenstadt, Wurtemburg, Germany. July 8, 1930, No. 20610. [Class 98 (i).] The film b is fed by rollers e into the exposure compartment d which has a cutting knife k adjacent the film housing a. The knife is drawn across the film by a sliding rod o. The fed length of film bl is pressed on to a sliding shutter g of a receptacle h by side-bars m and springs l on the camera framework. After exposure the shutter g is withdrawn and the film is pushed into the receptacle h. The ends of the bars m and springs l are curved forwardly to prevent catching the edge of the shutter on its return movement, and the film is made so as to flex downwardly as by winding it with its emulsion face outwards.
Patent GB-1000889-A (GB)
Title: The manufacture of 17-oxygenated retrosteroids
IPC: C12P33/00
Filed: 1964-05-20
Abstract: 17-Oxygenated 9b , 10a -steroids of the androstane series by aerobic oxidation of 20-ketoretropregnons using Fusarium solani. Exemplified products are 9b ,10a -androst-4-ene-3,17 -dione, 9b ,10a -androst-4-en-17b -ol-3-one, and their 6-dehydro derivatives.  D 6-9b ,10a -Testolactone is obtained as a by-product of the process of the invention using D 6-retroprogesterone as starting material. Specification 929,271 is referred to.
Patent GB-951456-A (GB)
Title: Process for the manufacture of 20:21-ketols of the pregnane series
IPC: C07J71/00
Filed: 1960-06-13
Abstract: The invention comprises (1) a process for the preparation of 20, 21-ketols of the pregnane series and their esters, wherein a D 16-20-oxopregnene -21- acid ester is catalytically hydrogenated in a neutral medium, the resulting D  17(20)-20-hydroxy-pregnene-21-acid ester is reduced in a medium free from free hydroxyl groups by means of a complex metal hydride, if desired after having esterified or etherified the enolin 20-hydroxyl group, any enol derivative in the 20-position is hydrolysed to form the free 20-ketone and if desired, the free hydroxyl group in the 21-position is esterified before or after hydrolysis of the said enol derivative; and (2) compounds of the formula: <FORM:0951456/C2/1> wherein R1 is an oxo group ketalized with an alkylene diol of 2 to 7 carbon atoms, R2 and R3 are each a free, esterified or etherified hydroxyl group, and R4 is an alkyl group.  The starting material for process (1) is preferably a D 16-11 b -hydroxy-20-oxo-pregnene-21-acid ester containing in the 18-position a free or acetalized oxo group or an a -hydroxy-ethylidene group.  The enolic 20-hydroxyl group may be esterified with an anhydride or halide of a carboxylic acid, and this is preferably effected immediately after its formation, by carrying out the catalytic hydrogenation in a lower fatty acid anhydride, and, immediately after the adsorption of hydrogen ceases, adding a tertiary base.  Etherification of the enolic 20-hydroxy group may be effected with an alkyl halide or dihydropyran. Examples are given, a by-product of the hydrogenation of D  5, 16-3-ethylenedioxy-11b , 18-oxido -18-tetrahydropyranyloxy -20- oxo - pregnadiene -21- acid methyl ester being D  5-3-ethylenedioxy- 11b , 18-oxido -18- tetrahydropyranyloxy -20- oxo -pregnene -21- acid methyl ester. Some D  5-3-ketal products are converted to the corresponding D 4-3-ketones, and resolution of racemic products is also referred to. Specifications 909,262 and 909,263 are referred to.ALSO:Trimethyl silyl ethers of D 17(20)-20-hydroxy-pregnene-21-acid esters are prepared by reacting the enols with trimethyl chlorosilane in the presence of pyridine.  They may be reduced to the 21-ols, which may be esterified before or after hydrolysis of the 20 enol ether group. Specifications 909,262 and 909,263 are referred to.
Patent GB-571517-A (GB)
Title: Improvements in stackable chairs
IPC: A47C3/04
Filed: 1943-12-13
Abstract: 571,517. Nesting chairs. BOYD & PERRY, Ltd., and BOYD, J. D. A. Dec. 13, 1943, No. 20832. [Class 52 (ii)] Chairs, which are stackable by putting one leg bl through a back opening, each has its front and rear legs a, b diverging downwards and spaced apart a distance exceeding the back to front width of the seat by an amount not less than the body thickness of the back measured from front to rear, an opening being provided in the back nearly the full width of the back and extending from the seat upwards for a distance which is a multiple of the total vertical depth of the seat. The parts a, b and c are integral and are made of metal tube or flat laminated wood or plywood. The back supports d are also of flat laminated wood or plywood secured, for example, glued, to the seat and joined at a height above the seat with a transverse strip. The front edge of the seat body e instead of being curved over at f may be set back relative to the front surface of the front legs of the stacked chairs so that the legs would nest side by side, each being stepped forward only by the back to front-thickness of the back. In Fig. 2 each front leg h is integral with the back support k. In Fig. 3 the back supports r reach down along the back leg b to which they are united, and other laminations from the back may branch forward to lie on and be united to the seat bearers c the triangular space so formed being filled, if desired, with a shaped block. To keep the chairs level a thickness piece may be fixed under the seat joining the two seat bearers. Similar provision may be made between the back supports to prevent slewing horizontally.
Patent GB-691957-A (GB)
Title: Improvements in or relating to mechanical calliper gauges
IPC: G01B3/44
Filed: 1951-09-04
Abstract: 691,957. Linear-dimension gauges. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Sept. 4,1951 [March 13, 1951], No. 20879/51. Class 106 (ii). A calliper-type gauge comprises a U-shaped frame 1 which houses between its limbs measuring components 2, 3, and a wedge 6. The wedge 6 is adjustable in a direction parallel to the limbs of the U-frame and is movable between two abutment stops 8, 9 forming part of the housing. The abutment stops each comprise a setscrew, which jointly determine the position of the wedge with respect to the measuring components. A measuring scale is engraved on one of the measuring components 3 and the wedge 6 to facilitate adjustment. A screw 10 urges the assembly towards the right in the Figure against the surface 11 of the frame, the position of the measuring component 3 being also determined by the screw 12. Specifications 673,512, 684,746, 691,955 and 691,956 are referred to.
Patent GB-1421281-A (GB)
Title: Method for expanding carboniferous shale granules
IPC: C04B20/06
Filed: 1973-05-02
Abstract: 1421281 Extending silico-alumino granules HOUILLERES DU BASSIN DU NORD ET DU PAS-DE-CALAIS 2 May 1973 [25 May 1972] 20900/73 Heading C1A [Also in Division F4] Granules of iron oxide-containing silicoalumino materials containing also not more than 1% carbon, e.g. decarbonated carboniferous shale, are expanded by heating and rapidly cooling the granules in a rotary furnace having a heating nozzle which provides a flame axially transversing the furnace up to its entrance, and cold air blowing means at its exit. The temperature of the granules undergoing expansion is automatically regulated by measuring the temperatures of gases at the furnace entrance and exit and maintaining said temperatures constant between predetermined limits by control loops actuating the supplies of fuel and cooling agent, such automatic regulation enabling maximum expansion of granules of different compositions and grain sizes to be obtained. The position of the hottest zone is adjustable along the furnace axis by longitudinal displacement of the nozzle. The expansion temperature may be 1280-1450‹ C., and bulk coagulation of the granules in the furnace is minimized by adding high-silica sand to the granules prior to expansion. In one embodiment, coarse sand (300-800 microns) sintering above 1450‹ C. (10% of the total) is added to the granules before they enter the furnace, fine sand (100-300 microns) which coats the granules (20% of the total) is added just inside the furnace and further sand (100-800 microns, 70% of the total) is added at the zone where expansion begins. The process may be carried out in the cylindrical rotary furnace described in 51489/74 the granules are initially heated in zone A, expansion temperature is reached in zone B, expansion is concluded in zone C (the hottest zone), cooling begins in zone D, and the granules are rapidly air-cooled in zone G. The temperature in zone C is measured at P, but thermal control is based on pyrometric sticks (16) and (17). The temperature at entrance and exit is kept constant by regulating systems which just alter the fuel flow rate to nozzle 2, and the air flow rate to fan 15 respectively, in response to temperature changes.
Patent GB-336226-A (GB)
Title: Improvements in molded rubber boots, and in the process and apparatus for manufacturing same
IPC: B29C35/00
Filed: 1929-07-08
Abstract: 336,226. Melhuish, A. E., (Hood Rubber Co.). July 8, 1929. Vulcanizing boots; cores.-Relates to improvements in rubber top-boots of the kind described in Specification 325,100 and consists in placing a layer of relatively non-flowing material, such as rubber with a quantity of fibrous material therein, next to the lining to prevent the rubber or the like of the boot leg from filling the spaces between the threads of the lining to reduce the stiffness of the boots and prevent adhesion to the last. As shown, the boot is moulded on an expansible last in substantially the manner described in Specification 325,100 and an extended top portion 52 may be joined to the boot by a bevel seam at 54. This portion may be separately moulded with a bevelled edge 54 and vulcanizable cement may be applied to the bevelled edges of the boot upper 11 and top portion 52 and the splice afterwards vulcanized in a mould as shown in Fig. 18. wherein an adjustable support 101 is provided for the boot portion at the sole and the portion 52 is held in position by an inflatable air bag 86 adjustably held in position within a vulcanizer member 78 on a support 88 in accordance with the size of the boot.
Patent GB-1090465-A (GB)
Title: Improvements in metal cutting tools
IPC: B23C5/22
Filed: 1965-05-18
Abstract: 1,090,465. Cutting tools. FUTURMILL Inc. May 18, 1965 [May 25, 1964], No. 20945/65. Headings B3B, B3C and B3K. A cutting tool such as an end mill or boring tool comprises a body portion 10 which carries, in a recess 14 a removable cutting insert 30. The recess has two angularly-related locating surfaces 18 against which the insert is positioned and a screw 42 secures the insert to the body,the axis of the screw lying in a plane which bisects the angle between the two locating surfaces. The securing screw 42 passes through a countersunk aperture in the insert into a threaded hole 24 in the body. In the initial position when the insert is merely placed in the recess, the axis of the insert aperture and the hole in the body are slightly offset (C) away from the corner formed by the two locating surfaces but in the bisecting plane. When the screw 4 is tightened the insert is simultaneously urged by the action of the screw head on to its seat 16 in the recess into abutment with the locating surfaces by the action of the countersunk recess and the offset of the insert and screw axes. The cutting insert which is triangular or other polygonal shape may have side surfaces which are inclined to its top and bottom surfaces and/or as shown in an alternative embodiment the sides are at right angles to the top and bottom surfaces and the insert is countersunk on both the surfaces, so that it can be turned over.
Patent GB-592621-A (GB)
Title: Servo control device
IPC: F15B13/02
Filed: 1944-10-27
Abstract: 592,621. Fluid-pressure servomotorcontrol systems. JACK & HEINTZ, Inc. Oct. 27, 1944, No. 20989. Convention date, Oct. 8, 1943. [Class 135] In an automatic pilot including a hydraulic servomotor with a slidable byepass valve which, when opened, interconnects the two sides of the servo-piston to render the latter ineffective, the byepass valve is controlled by a further valve included in a device comprising a manifold with a first chamber provided with an inlet from the pump, an outlet to the servomotor, balanced, oil, control-valve, and an outlet to actuating means for the byepass valve, a second chamber provided with an outlet to' a sump, and a manually-operable valve for opening and closing a passage interconnecting the two chambers. With the diaphragm valve 11 in the open position shown, hydraulic pressure fluid flowing in through pipe 8 -is short-circuited back to the sump through pipe 23. When valve 11 is closed, the pressure fluid is directed through pipes 6, 7 to actuate the servomotor piston byepass valve 49 and to the servomotor control valve, respectively. The latter valve controls the flow of pressure and exhaust fluid through two pipes 39, past a pressure regulator 46, and through separate ports 44 in communication with the opposite ends of the servocylinder 30. The flow of pressure fluid to one end of valve 49 forces the latter to the right against the action of its loading spring 54 to close off chamber 43 which normally allows the free flow of fluid between the two ends of the servocylinder. In the open position of valve 49, as shown, the servopiston is free and the control surface of the aircraft can be actuated manually, but in the closed position, the automatic pilot controls the servopiston. The valve 49 has sufficient lands to control a bank of three servopistons. Valve 11 is actuated by a cam pivoted at 13 and carried by a handle, the latter being provided with a spring-pressed sleeve 19 which, in the closed position of valve 11, engages in recesses in the sides of the slot formed by the flanges 16 in which the cam is pivoted.