baber/WOPTO huggingface dataset:
Patent GB-720128-A (GB)
Title: Improvements in and relating to automatic current control systems
Inventor: BOLTON DENIS
IPC: G05F1/325
Filed: 1952-09-22
Abstract: 720,128. Automatic current-control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 4, 1953 [Sept. 22, 1952], No. 23706/52. Class 38 (4). [Also in Group XXXVI] The direct current flowing in a bus-bar from a D.C. generator is maintained constant by using the magnetic field surrounding the busbar to vary the saturation of an inductor carrying an alternating current, the controlled alternating current being rectified to control the field of the D.C. generator. The detector, Fig. 1, consists of a steel yoke 2 surrounding the bus-bar 1, and an inductor core 3 of " Mumetal" (Registered Trade Mark) carrying opposed A.C. windings 4a, 4b connected in series. This inductor may be rotated about a vertical axis to vary the air gaps and so vary the range of current to be detected. To control the bus-bar current, the A.C. signal current is supplied to one field 7a, Fig. 3, of an amplidyne generator via a rectifier, and the other field 7b is supplied from the same A.C. source through a component 9 with a voltage- and frequencycurrent characteristic similar to the controlled inductor 8.
Patent GB-135166-A (GB)
IPC: G03C7/20
Filed: 1919-09-26
Abstract: 135,166. Gorsky, S. de Procoudine-. Nov. 9, 1918, [Convention date]. Colour photography; contact printing frames; printing-apparatus.-Apparatus is described for printing colour photographs more especially for the method in which the positive is resensitized for printing from different negatives by superposed printings, and includes means for ensuring registration in printing. The frame 0 is hinged to a base E, and is adjustable in different inclined positions. The lamp 33, an opaque screen 34, and a pivoted non- actinic filter 56 are mounted on a frame 60 attached to the board O. The filter 56 is moved by an arm 50 and positioned by a catch 59. A strip negative N having three colour components is positioned in a groove 22 closed on either side of the printing area by covers 23, 24, and the section of the negative printed is supported on a thick glass plate 25 resiliently mounted on a pivoted frame 26. The positive is supported diagonally on knife edges 40, 41, 42 of a frame 1 secured to the frame O. The frame 26 is adjustable towards and away from the frame 1 by a screw 29 extending through the frame and a nut 30. The pressure plate 16 has a felt cushion 17 on which the positive plate D is placed in inserting it on the knife edges 40, 41, 42. The cushion is adjusted by a disk and screw 19. The plate 16 is mounted on a pivoted arm 9 which can be pressed towards the frame 1 by an arm 4 mounted on the bolt 3 and having a cam portion 7 pressing on the arm 9. The normal outward movement of the arm is controlled by a nut 12, but by turning the stop 15 out of the path of the arm 4 the cam surface 7 is drawn clear of the arm 9 which allows the arm to be swung over as illustrated in the dotted lines in Fig. 5. In moving the arm 9 towards the frame 1, the positive plate D is moved along the knife edges, and when adjacent to the negative the opposite edges of the plate are engaged by small spring levers 43, 44 which press the plate on to the knife edges. The levers 43. 44 are mounted in recesses in the frame 1 and are retracted and held inoperative when the frame is opened by a pivoted frame 49 which is connected at the end opposite the pivot 50 by a screw 52, and is urged outwards by a spring 51 sufficiently strong to overcome the springs acting on the levers 43, 44 when released but which is compressed by the arm 9 when the frame is closed, thereby releasing the spring levers 43, 44. The movement of the levers is also adjusted by screws 47, 48.
Patent GB-442882-A (GB)
Title: Improvements relating to the manufacture of moulded heat-resisting glass ware
IPC: C03B29/00
Filed: 1934-08-17
Abstract: 442,882. Glass manufacture. PURSER, E. J. JOBLING-, Wear Glass Works, Sunderland. Aug. 17, 1934, No. 23730. [Class 56] A method of preventing moulded heatresisting glassware from breaking, when exposed to rapid changes of temperature, consists in reheating the ware locally while it is still in a plastic state in order to remove the shear mark. Preferably, an oxy-gas flame is used for reheating, and the operation is conducted while a glass article is still in the mould and as soon as possible after the plunger has been removed. The flame is applied to the glass in the region of the shear mark until surface irregularities are sealed up, rounded over, or removed.
Patent GB-598339-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D51/30
Filed: 1945-09-14
Abstract: 598,339. Brakes. BENDIX AVIATION .CORPORATION. Sept. 14, 1945, No. 23776. Convention date, Nov. 15, 1944. [Class 103 (i)] A drum brake comprises a support of channel or box section and a hydraulic cylinder formed of a length of tubing and extending through and welded to the side walls of the support. Adjusting means for the shoes are provided. As shown, a channel-section support member 28 is bolted to a vehicle axle flange 40 and is closed to form a box-section by a plate 34 positioned by nibs 36 bent in from the sides of the members to which the plate is brazed. A cover plate 46 for the drum 12 is provided. Cylinders 26 each comprising a length of tubing extend through the sides of the member 28 and at each end thereof and are brazed thereto. The cylinders are connected by a pipe 56. Fittings 52 brazed to the cylinders serve respectively for the inlet of the pressure fluid and for bleeding. The brake shoes 18, 20 anchor on the cylinders through flanges 38 on the pistons 22. One piston of each pair acts on the associated shoe end through a screwed rod 58 and adjustment of the shoe is effected by turning the piston by a serrated ring 61 which is held in position by a detent 62 attached to the support member 28 by ears 64. Release springs 48 for the shoes are attached to members 50 extending through the sides of the member 28.
Patent GB-1533445-A (GB)
Title: Method for coating photoflash lamps
IPC: F21K5/08
Filed: 1976-06-09
Abstract: 1533445 Coating flash bulbs GENERAL ELECTRIC CO 9 June 1976 [1 July 1975 2 Sept 1975] 23781/76 Heading B2E [Also in Division C2] A flash bulb is coated with an organic resin for improvement of its shatter resistance by dipping the bulb in a UV curable solventless organic resin having a viscosity in the range of 100 to 10,000 centipoises at the dipping temperature, withdrawing the bulb from the resin over 3 to 60 seconds and thereafter effecting the cure of the resin by irradiation with UV radiation, the resin being able to transmit at least 70% radiant energy in the region of 375 mm and at least 80% of radiant energy in the region of 400 mm when measured as a 10 mil thick film on a glass slide in a recording spectrophotometer. Coating with such resins provides a coated bulb in which the spectral balance of the light transmitted within the range 360 mm to above 680 mm is not substantially altered. Suitable resins are epoxy resins, acrylic resins and mixtures of polyolefinically unsaturated organic compounds blended with polyfunctional organic thiols. Such polyene/polythiol mixtures may contain, as photosensitizers, benzophenone. The epoxy resins may contain a halonium salt as photosensitiser. Numerous suitable resin mixtures are specified.
Patent GB-388674-A (GB)
Title: Improvements in or relating to processes for the production of zinc from zinc-dust zinc-waste and the like
IPC: C22B19/18
Filed: 1932-08-25
Abstract: 388,674. Zinc. AKT.-GES. FœR BERGBAU BLEI UND ZINKFABRIKATION ZU STOLBERG UND IN WESTFALEN, Aachen, Germany. Aug. 25, 1932, No. 23851. Convention date, Aug. 28, 1931. [Class 82 (i).] Zinc dust, zinc waste, zinc ashes, &c. are treated for the production of metallic zinc by heating in closed rotary vessels wherein the surfaces which effect by friction the removal of oxide from the metal drops are kept by external heating at a temperature somewhat above the melting-point of zinc. The closed vessel may rotate inside a heated chamber, or may be traversed by an internally heated pipe of large diameter. In the apparatus shown, a closed rotary drum A is mounted in a heating- chamber h heated by burners k.
Patent GB-1505393-A (GB)
Title: Process for preparing 2-amino-5-chloropyridine
IPC: C07D213/73
Filed: 1975-06-03
Abstract: 1505393 2 - Amino - 5 - chloropyridine ELI LILLY & CO 3 June 1975 [7 June 1974] 23870/75 Heading C2C 2 - Amino - 5 - chloropyridine is prepared by reacting 2-aminopyridine with a chlorinating agent in a strongly acidic medium having a Hammett acidity function of less than -3À5. The medium preferably has a Hammett acidity of less than -4À5 and suitable mixtures are at least 70% by weight aqueous H 2 SO 4  and HCl/ glacial acetic acid containing at least 10% by weight HCl. Chlorine is the preferred chlorinating agent. The Hammett function is defined as where C B /C BH+  is the ratio of the concentration of the indicator present in the medium as a neutral base to the concentration present as conjugate acid.
Patent GB-401077-A (GB)
Title: Improvements in or relating to devices or apparatus for emulsifying, atomizing or spraying liquids
IPC: B01F3/08
Filed: 1932-08-26
Abstract: <PICT:0401077/III/1> <PICT:0401077/III/2> <PICT:0401077/III/3> <PICT:0401077/III/4> Apparatus for emulsifying, atomizing, or spraying liquids comprises a reciprocating pump, which may be hand operated, and preferably having a relatively long piston 2, a main inlet orifice 8 formed in a plug 7 at the lower end of the pump barrel 1, a single imperforate inlet valve 10 and a plurality of fine or restricted permanently open emulsifying outlet passages 11 so arranged that on the pressure stroke of the piston, the streams of liquid forced through the passages meet at high velocity and disrupt one another.  The construction of the inlet valve and outlet passages may be varied, e.g. Fig. 4 shows a plug 7 in which the passages consist of grooves 12 cut in the periphery and deeper than the screwed thread.  Fig. 7 shows an arrangement consisting of two plugs 7 similar to that shown in Fig. 1 in series, both having grooves 11 cut in them.  The grooves in the upper plug are relatively coarse. This provides increased suction on the suction stroke, tending to draw back past the piston any liquid which may have passed above it during the preceding forcing stroke, and also effecting a coarse emulsification during the suction stroke.  In the arrangement shown in Fig. 9, the plug contains a cylindrically walled valve chamber 19 having axially disposed conical bores 8 opening into the cylindrical wall.  A ball valve 10 is used and does not completely close the bores 8 owing to the differing curvature of the valve and the chamber 19.  The bores 8 may be cylindrical.  The valve itself may be provided with grooves or projections to coact with a plain seating and in the case of an elongated valve, the ends may differ to provide differing passages by reversal of the valve in the barrel, and the movable valve member may be caged or provided with a spring to retain it normally on the seating.  The device may be used to emulsify a mixture of melted butter and milk to form artificial cream.
Patent GB-1082054-A (GB)
Title: Improvements in or relating to electric lamps and control systems therefor
Inventor: HEFFORD CHARLES GEORGE
IPC: H05B37/02
Filed: 1964-06-09
Abstract: 1,082,054. Control systems for vehicle lighting. STADIUM Ltd. Sept. 8, 1965 [June 9, 1964], No. 23901/64. Heading H2H. A lighting system for a vehicle wherein arrangements are made for dimming a lamp such as a fog lamp &c. comprises an incandescent lamp in series with a variable impedance the value of which is selectable by means of a switch or relay system. The impedance may be a tapped resistor or a series of resistors.
Patent GB-226866-A (GB)
Title: An improved indicator for displaying information
IPC: G09F7/00
Filed: 1924-03-18
Abstract: 226,866. Read, A. J. March 18, 1924. Indicators directly operated by hand for displaying variable information.-An indicator board for displaying variable information, such as seating conditions, commencing' times, &c. for theatres, comprises pointers A which are movable in slots B in a panel D bearing information E. The pointers are supported at the back of the panel by guide rods F which are held together by springs. The pointers are secured in their positions by spring clips which embrace the guide rods F. Information may be displayed on both sides of the panel.
Patent GB-1374661-A (GB)
Title: Hinges
IPC: E05D5/08
Filed: 1972-05-22
Abstract: 1374661 Hinges R HEINZE [trading as RICHARD HEINZE] 22 May 1972 [26 June 1971] 23921/72 Heading E2F In a concealed flap hinge for furniture having two hinge links 17, 18 and four hinge axes 12, 13 and 15, 16, the hinge has two casings 3, 14 one inserted in a bottom shelf 1 of the body of the article of furniture, the other inserted in an associated closure flap 2 of the article. The casings are circular or segmental cross-section and an adjustment plate is provided on which is located an adjustable U-shaped hinge bracket 4 held fast against rotation but displaceable both in the direction of the flap and in the direction of the bottom shelf of the article of furniture. In the opening movement of the hinge a hinge link 17 moves to a position 17' and a hinge link 18 moves to a position 18' while the flap assumes the position 2'. Adjustment is dealt with by means of an adjusting screw 11 and a screw 7 acts as a fastening screw to hold the hinge bracket in position.
Patent GB-418043-A (GB)
Title: Process for the chlorination of hydrocarbons
IPC: C07C17/08
Filed: 1933-08-29
Abstract: In the chlorination of hydrocarbons, the hydrocarbons in the liquid state are atomized by means of a stream of chlorine gas which simultaneously injects the atomized hydrocarbons into a chamber. Atomizing jets of well-known types may be used.  The pressures and temperatures employed vary according to the type of substance treated and cooling of the reaction mixture is effected by adding an inert liquid of suitable vapour pressure to the reacting hydrocarbon, so that it volatilizes at a temperature below the undesired temperature for the reaction; as cooling agents carbon tetrachloride, dichlorodifluoromethane, propane and isobutane which are unaffected in the absence of light, or excess of the reacting hydrocarbon may be employed.  Actinic radiation may be used to accelerate the reaction in cases where it is not sufficiently rapid in the dark.  The reaction products are removed as quickly as possible, especially in the case of the chlorination of olefines, by continuous displacement or draining into a fractionating apparatus.  The process is stated to have particular advantages when applied to tertiary olefines such as g -butylene, amylenes, unsym-methyl-ethyl-ethylene, trimethyl-ethylene, hexylenes and the like, which are preferably used free from secondary butylenes, amylenes, butanes and pentanes, and may be obtained from the products of pyrolysis of mineral oils or by decomposition of the corresponding alcohols.  The main products are unsaturated olefine monochlorides, of the allyl or vinyl type, the former occurring to a greater extent below 60 DEG  C.  High pressures are avoided to prevent secondary reactions with hydrochloric acid. The chlorination of g -butylene to give isobutenyl chloride, and small quantities of dichloro-isobutane and tertiary butyl chloride is described.  The Specification as open to inspection under Sect. 91 refers also to the chlorination of all organic compounds which can be handled in the liquid phase such as ketones, aldehydes, alcohols and esters.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1488452-A (GB)
Title: Automatic choke valve apparatus for an internal combustion engine
IPC: F02D41/06
Filed: 1975-06-03
Abstract: 1488452 Automatic choke for IC engine; regulating IC engines HONDA GIKEN KOGYO K K 3 June 1975 23996/75 Headings F1B and F1H A choke valve (2) is driven by a reversible pulse motor (5) via a linkage which includes a pair of co-operating pawls (8, 9) and a helical spring (7) between the pulse motor output shaft (6) and the choke valve operating shaft (3), such that the pawls (8, 9) ensure positive rotation of the choke valve (2) in one direction of rotation of the pulse motor (5) and a resilient connection via the helical spring (7) in the reverse direction of rotation of the pulse motor (5). The sequence of operation of the choke valve (5) at engine starting is controlled by a control circuit (4) according to Fig. 2 which involves one reverse movement (A to B) of the pulse motor followed by three controlled forward movements (C to D, E to F and F to G). The invention resides in controlling the rate of movement E to F, which results as the engine first fires, in accordance with engine temperature. When the ignition is switched on, the choke valve (2) is moved from an open position A to a closed position B and a signal is sent to terminal 15 of an AND circuit 19. The starter is operated at D and, as the engine fires, a signal at 21 is supplied directly to the AND circuit 19 at terminal 16 and indirectly through a parallel circuit to terminal 17. The parallel circuit includes a differential circuit which forms a pulse upon receiving the signal from 21, which pulse triggers a timer 24, which transmits a further pulse with a length proportional to engine temperature, as sensed by a thermal responsive resistor 23, to terminal 17. The output of AND circuit 19 is a pulse proportional to engine temperature which is applied to a frequency adjuster circuit 25, which adjusts the frequency of pulses sent to the pulse motor (5) by the control circuit (4) thus adjusting the speed of choke valve opening to point F. After regular firing at point F the choke valve opens gradually to a maximum at G.
Patent GB-263092-A (GB)
Title: Improvements relating to the treatment of fibrous material to render it proof against moth
Filed: 1926-09-29
Abstract: 263,092. Jackson, L. E., and Wassell, H. E. Dec. 17, 1925, [Convention date]. Quinidine oleate is made by dissolving quinidine in twice its weight of oleic acid.
Patent GB-902904-A (GB)
Title: A new or improved torque control unit for series wound induction electric motors
Inventor: SMITH TERENCE PRINCEP
IPC: H02P7/00
Filed: 1959-07-14
Abstract: 902,904. Control of A.C. motors; controllers. TELEDICTOR Ltd., and WICKSTEED & CO. Ltd., CHARLES. Oct. 5, 1960 [July 14, 1959], No. 24084/59. Class 38 (3). Relates to a torque control unit for a series wound A.C. motor having armature Ar and field windings F1, F2, and driving a tube expander tool. A potentiometer RV4 is adjusted to correspond to the motor current for maximum torque, a resistor RV3 being set in accordance with voltmeter M indicating the supply voltage. The unit is operable on different supply voltages, alternative connections being made by a multiway connector between the control unit and motor. As the motor is loaded, a larger current passes through transformer T2 whereby an increasing positive potential is applied to the grid of thyratron Th. When the torque reaches a maximum value, the positive potential overcomes the negative bias from potentiometer RV4, so energizing relay RE. After a short delay period, relay RA responds to stop the motor, followed by a further period at the end of which the motor is reversed by relay RB. When the expander tool is released, switch S2 opens to reset the contacts. The motor is started in the reverse direction by operating switch SR to energize relay RD. In a modification, the voltmeter M is dispensed with and a voltage regulating tube is connected across resistors R7, R8. Specification 791,815 is referred to.
Patent GB-1102235-A (GB)
Title: Absorber rod for nuclear reactors
IPC: G21C7/113
Filed: 1965-06-08
Abstract: 1,102,235. Reactor control rods. ALLM NNA SVENSKA ELEKTRISKA A.B. 8 June, 1965 [9 June, 1964], No. 24093/65. Heading G6C. A reactor control rod comprises a number of absorber blades fastened to a supporting member in such a way as to have a certain freedom of movement in relation to the supporting member. In one embodiment (Figs. 1 and 2, not shown), a central body 2 extends from a part 1 along the whole length of the rod and is provided with longitudinal grooves 3, each receiving an edge of an absorber blade 4. The blades 4 are provided at their ends with attachment plates 5, 6 of which the plates 5 are welded to the part 1. Each plate 5 comprises a narrow arm 8 which, owing to its elasticity, gives considerable freedom of movement to the attached blade 4. At their opposite ends, the blades 4 have even greater freedom of movement through the attachment plates 6 being mounted on the central body 2 by means of bearings 9 which allow turning movements as well as axial displacement of the blades 4. The blades 4 can be made relatively thin so that the entire control rod obtains still greater flexibility. The purpose of the invention is to allow the slots in the reactor core which receive the control rods to be made considerably narrower than has hitherto been possible without jamming of the rods occurring. The attachment plates 5, 6 are provided with guiding slide discs 10 which are dimensioned with reference to the smallest width of slot which can possibly occur in the reactor core. In an alternative embodiment, a central bar-like supporting member is fastened to the absorber blades only at the ends of the latter, the absorber blades between their ends being allowed freedom of movement at right-angles to the blade planes. The supporting member may be provided with guiding elements, such as resilient lugs or rollers, for guidance against suitable guiding surfaces in the reactor core.
Patent GB-155663-A (GB)
Title: Improvements in machines for cutting or shaping metal bars or shafting, or parts of same, square or polygonal in cross section
IPC: B23Q16/06
Filed: 1919-10-02
Abstract: 155,663. Robinson, M. W., and Lithgoe, J. Oct. 2, 1919. Shaping.-In a shaping-machine for cutting polygonal portions on the whole or part of a shaft or bar, the latter is held by a headstock 2 and tailstock 3, and gives an intermittent motion between each stroke of the transversely-reciprocated tool 24, preferably by a segmental gear 10, on a continuously revolving shaft 9, engaging a gear 8 in the headstock 2. The headstock spindle is locked between each movement by means such as a disk 17 having notches with which a pivoted pawl 16 is forced into engagement by a cam 11 on the shaft 9 acting on a roller 14, a spring being provided to draw the parts out of engagement during the rotation of the work. In a modification, Fig. 4, the latch 30 is pressed into engagement with the disk 17 by a spring 31, and moved out of engagement by the cam 11 and lever 32. The tool slide 25 is operated by the usual connecting rod and crank 21, and the saddle 6 fed by a screw 26 and ratchet gear 29.