baber/WOPTO huggingface dataset:
Patent GB-763988-A (GB)
Title: Improvements in or relating to the manufacture of thermionic valves
Inventor: SMYTH JOHN ARUNDEL
IPC: H01J1/26
Filed: 1954-04-14
Abstract: 763,988. Thermionic cathode constructions. STANDARD TELEPHONES & CABLES, Ltd. April 14, 1954, No. 10947/54. Class 39(1). A thermionic cathode has one end flared outwardly around its whole circumference, to facilitate the insertion of the heater wires. Preferably both ends are so flared. A cathode 2 assembled on micas 5, 6 is placed over shank 7 of a tool and conical part 10 of the tool is pressed on the upper end of the cathode thereby flaring that end, and pressing the lower end over flared portion 8 thus flaring the other end of the cathode. The tool may be round, elliptical or rectangular in cross section. The cathode need not be circular in cross-section. Reference has been directed by the Comptroller to Specification 725,250.
Patent GB-1183111-A (GB)
Title: Improvements in or relating to Fume Cupboards
Inventor: WARRAN ARTHUR HENRY
IPC: B08B15/02
Filed: 1967-03-09
Abstract: 1,183,111. Fume cupboards. REDIWELD Ltd. 28 Nov., 1967 [9 March, 1967], No. 11049/67. Heading F4X. [Also in Division E1] A fume cupboard is constructed from rigid panels of a thermoplastic material such as polyvinylchloride, joined together by hot gas welding or other localized heat treatment. In the cupboard shown a baffle 34-37 is located within the cupboard at the back thereof and defines a fume extraction flue of progressively increasing width, discharging into a duct 40. From the duct 40 the fumes are withdrawn either through thermoplastic conduits to a centrifugal fan and thence to atmosphere, or. as shown by an axial flow fan 41. The cupboard has side windows 9 and a front window which is slidable to provide access to the cupboard. Complete closure of the window is prevented by limit stops (21, 22, Fig. 2) on the window frame. The cupboard comprises left and right stiles 3, 4 to which are attached front and side panels 5, 6. The stiles 3, 4 are formed as sash guides (Fig. 4) for a counterweighted sash window 8 comprising the slidable front window and made entirely of P.V.C. sheeting. The sash guides in addition to carrying the usual sash weights (30) also accommodate a tube (29) through which extends electric wiring between the cupboard interior light and fume extraction fan and their respective switches 16, 17. These together with an electrical socket 18 and water and gas controls 14, 15 are mounted in a panel 13 at the front of the cabinet.
Patent GB-500323-A (GB)
Title: Improved production of magnesium
IPC: C22B26/22
Filed: 1938-04-11
Abstract: 500,323. Extracting magnesium. TENNANT, W. J. (Dow Chemical Co.) April 11, 1938, No. 11103. [Class 82 (i)] Metallic magnesium is produced by heating together silicon carbide and magnesium oxide or magnesium oxide-containing material to a temperature capable of liberating magnesium. The heated mixture which should be powdered preferably contains calcium oxide and preferably may comprise calcined dolomite. The reaction may be carried out in an electricallyheated graphite crucible surrounded by a gastight jacket, the interior of which is connected to a vacuum-pump and of which the interior surface serves as a condenser. The heating may be carried out for 40 minutes at a temperature of 1500-1800‹ C., e.g. 1400‹ C.
Patent GB-747620-A (GB)
Title: A vacuum distilling apparatus
IPC: B01D3/12
Filed: 1953-04-23
Abstract: In vacuum distilling apparatus and film evaporators wherein the liquid is heated while spread out as a film on the interior surface of a rotating vessel 3, a vertically disposed cylindrical ring 30 connected to the outside of the rotating vessel moves in a liquid seal 7 containing a liquid of low vapour pressure, which divides the interior of the casing 1 into two separate parts which have no communication with each other; the heaters 24 and the driving shaft 5 for the rotating vessel are disposed in the <PICT:0747620/III/1> lower part of the casing which is maintained under moderate vacuum (e.g. 2 to 5 mm. Hg.), and the film of liquid is in free communication with the upper part which is maintained under high vacuum (e.g. 10-3 mm. Hg.).  A heavy hydrocarbon or silicone oil may be used in seal 7; preferably the same liquid is used as in the diffusion pump connected to socket 22.  The temperature of the liquid in seal 7 is maintained low by means of cooling-jacket 8.  Water is introduced into the jacket through pipe 9 and is discharged through pipe 10.  The distilland is introduced on to the inner surface of vessel 3 through pipe 13; it ascends this surface as a film, and is partly vaporized.  Residual liquid flows over the top rim of vessel 3 into trough 14, and is withdrawn therefrom through tubes 15 and 17 by centrifugal pump 16, which is driven by shaft 5.  The vapours are condensed on stationary condenser 11 which is made in the form of a hollow conical ring.  Cooling liquid is introduced into the condenser through pipe 20, and is discharged through pipe 21.  The condensate is collected in trough 12, and is removed therefrom through pipe 19 by pump 18, which is also driven by shaft 5.  The apparatus may be used for the concentration of aqueous solutions of thermallyunstable substances.  In this case, the condenser 11 is not operated, a pressure of 5 to 50 mm. is maintained in the distillation space, and the water-vapours are withdrawn via socket 22 to a surface or contact condenser of conventional type.
Patent GB-808258-A (GB)
Title: Improvements relating to bladed turbine or compressor wheels
IPC: F01D5/30
Filed: 1957-04-05
Abstract: 808,258. Turbine and compressor bladed rotors. GENERAL MOTORS CORPORATION. April 5, 1957 [July 5, 1956], No. 11171/57. Class 110 (3). In an axial-flow turbine or compressor bladed rotor in which the blades are mounted by their roots 14 in undercut slots 17 formed in the rim 11 of the rotor, the blades are secured against axial movement in the slots by means of keys 20, one key being disposed between each pair of circumferentially-adjacent blades and each key being inserted into a slot 21 in the rotor rim between the two blades of the pair and into notches 23 in those blades. Each key is secured against radial displacement by a pin 26 inserted through aligned holes in the wheel rim and key. The blades 12 have aerofoil portions 13, root portions 14 of fir-tree form and platform portions 15 therebetween. The blade-mounting slots 17 in the rotor are of corresponding fir-tree form and the stubs 22 between the slots 17 formed with circumferentially-extending slots 21 to receive the keys 20 which are of rectangular form. Each key 20 engages slots 23 formed in the adjacent edges of each pair of blade platforms 15, the keys being secured by means of pins 26 which engage bores 27 in the rotor stubs 22 and 28 in the keys 20, the pins being a tight fit in the bores in the keys. A bore 31 is provided in the rotor stub in alignment with the bore 27 to facilitate removal of the pin. In a further embodiment, the blade-mounting slot is inclined to the turbine axis, the key 20 is disposed perpendicularly thereto and the pin 26 is disposed perpendicularly to the key.
Patent GB-1376757-A (GB)
Title: Steophonic decoder circuit arrangements
IPC: H03D1/22
Filed: 1972-03-10
Abstract: 1376757 Stereophonic radio receivers GENERAL ELECTRIC CO 10 March 1972 [10 March 1971] 11248/72 Heading H4L A stereophonic radio receiver includes a decoder comprising a phase-locked loop for reconstituting the suppressed subcarrier from the pilot signal, detecting means for detecting the presence of a suitable stereo signal and means for deriving the left and right signals from the composite signal under the control of the reconstituted subcarrier in response to an indication from said detecting means that a suitable signal is present. The embodiment described is arranged to use a monolithic integrated circuit, components external to the integrated circuit being denoted by reference X, As shown in Fig. 1 the composite signal is supplied via amplifier 10 in the form of balanced signals C, D to the stereo decoder 22 and is also supplied as balanced signals A, B, to a quadrature phase detector 12 and an in-phase detector 24. The output of phase detector 12, at 19 KHz controls via D.C. amplifier 14 a current controlled 38 KHz square-wave oscillator 16 for the subcarrier, whose output is divided by two at 18 to provide a quadrature output HI for the phaselocked loop to phase detector 12 and an inphase output FG for application to the phase detector 24. The output of oscillator 16 is also supplied via a gate 20 to decode the left and right signals 45, 46 in the decoder 22 in conventional manner. Phase detector 24 provides a D.C. output representing the amplitude of the pilot signal which is supplied via D.C. amplifier 26 to a level detector 28 so that when the pilot signal level exceeds a predetermined amount the stereo indicator lamp 48 lights and gate 20 is opened. The circuit is provided with an hysterisis characteristic. A switch 47 when closed enables the stereo signal to be processed in the monaural mode. Pin 35 on the input amplifier 10 receives a signal for muting between stations. Normally the composite signals C, D, which have equal D.C. levels are supplied to the stereo decoder but when the receiver is to be muted, output E is substituted for output C so that the same D.C. levels are supplied to the decoder but there is no resultant signal input. The integrated circuits are described in detail, Fig. 2 (not shown). The indicator lamp 48 and gate 20 are controlled by a dual collector transistor.
Patent GB-817118-A (GB)
Title: Improvements in indexing means for wringers
IPC: D06F45/18
Filed: 1957-04-08
Abstract: 817,118. Wringers. LOVELL MANUFACTURING CO. April 8, 1957 [May 14, 1956], No. 11347/57. Class 138 (2). A wringer with its head (3) rotatably and slidably mounted on a wringer post (4) has indexing means which may be positioned either yieldably to prevent rotary movement of the head except under deliberate force, or positively to prevent any such movement; together with an interlock (25, 30) between the wringer drive control and the indexing means (21, 20) to set the latter positively when the drive is in gear and yieldably when in neutral. As shown, the drive to the rollers 2 is from a washing-machine via shaft 7, clutch 6 keyed to the shaft, gears 8 or 9 loose on the shaft, and crown gear 10. Fig. 1 shows the indexing pin 21 in its yieldable position with its rounded or chamfered lower end 32 just projecting into one of a series of circumferentially arranged indexing holes 20 in a plate 18 fixed to the post 4, such that force applied to the head could make the latter turn about the post 4 as the end 32 of the pin would be able to ride over the smooth upper edge 33 of a hole 20 (see Fig. 5 also). The clutch is shown in neutral position. Rotation of the handle 5 causes eccentric pin 13 to move the clutch 6 either up or down to mesh teeth 11 and 12 so coupling the washing-machine drive to the rollers; at the same time the cam 30 on spindle 14 forces the forked shifter 25 and hence the pin 21 downwardly, the latter moving well into a hole 20 (Fig. 2) against action of a spring 23 to prevent rotation of the head. Fig. 4 (not shown) illustrates a positive tie between index pin and fork shifter, the latter being also positively raised, not by any spring but by a crank-pin 36 carried by the cam 35.
Patent GB-686306-A (GB)
Title: Improvements in or relating to illuminated signs
IPC: G09F13/04
Filed: 1949-04-29
Abstract: 686,306. Illuminated signs. CURRIE, D., and SUMMERSGILL, J. F. May 5, 1950. [April 29, 1949] No. 11433/49. Drawings to Specification. Class 93. An illuminating sign comprises a sheet of transparent material having on its rear surface one or more light-refracting layers covered by an opaque material outlining the required design the said rear surface having firstly been coated with adhesive means for the light refracting layers, and means for illuminating the rear of said material such that light passing through the design is refracted by said layers and transparent material. The sheet of transparent material may be glass or clear plastic such as acrylic, polystyrene or cellulose acetate carrying a gelatine or isinglass coating. The design may be outlined by one or more layers of coloured paint or sheets of semi-opaque coloured cellulose or gold and silver powder covered by an opaque paint such as black paint or an opaque sheet of plastic material while a coating of clear varnish may be inserted between each layer. The design may be formed by means of a stencil or a silk screen process or by applying a sheet of lead foil of the required design and removing it when the other layers have been applied. The whole design may be produced on a base as a decalomania transfer and then transferred to the transparent material by a slide-off process. The design may be stippled if desired.
Patent GB-559393-A (GB)
Title: Improvements in and relating to photographic processes
IPC: G03C1/77
Filed: 1942-08-15
Abstract: 559,393. Photographic sensitive layers; developing. BOWEN, E. WINDSOR-, and GOWER, C. H. R. Aug. 15, 1942, No. 11459. [Class 98 (ii)] A latent image formed in the anodised surface of a support of aluminium or aluminium alloy after impregnating said surface with a lightsensitive silver salt is developed with a developer in association with an intensifier, i.e. a physical developer. To secure uniform sensitization of the anodised layer; light sensitive silver chloride is deposited therein by immersing the support first in a solution of a water-soluble chloride acidified with an organic acid, e.g. tartaric acid, and then in a solution of a water-soluble silver salt acidified with an inorganic acid, preferably nitric. A developer giving a high degree of contrast is normally used, e.g. one containing metol and hydroquinone in acid solution to which is added just before use a solution of silver nitrate containing one or more organic acids and an inorganic acid, e.g. nitric. A two-solution developer described contains in Solution A metol, hydroquinone, and citric acid, and in solution B silver nitrate, citric acid, glacial acetic acid, and nitric acid ; and preferably part of the silver nitrate and acetic acid of Solution B is not added to that solution until just before the two solutions are mixed and diluted for use. Formulae for the sensitizing and developing solutions are given in the Specification.
Patent GB-1408991-A (GB)
Title: Adjustable leakport pressure sensor
IPC: G01L7/08
Filed: 1973-03-09
Abstract: 1408991 Fluid-pressure servomotor systems JOHNSON SERVICE CO 9 March 1973 [30 Aug 1972] 11491/73 Heading G3P A pressure sensor comprises a diaphragm unit 8 subject to an input pressure within chamber 9 and controlling flow through a leak orifice 7, there being means to adjust the set point of the sensor by moving orifice 7 axially towards or away from diaphragm unit 8. The adjusting means comprises a sleeve 17 having an external thread 19 screwed into housing 12 and an internal thread 18 of different pitch into which the stem 15 of the orifice unit is screwed. Rotation of sleeve 17 thus effects axial movement of stem 15, rotation of the latter being prevented by radial projections 31, 32 on a fixed locking ring slidably engaging axial slots 27, 28 in the stem head 23. An O-ring 22 prevents leakage between an unthreaded portion 20 of the stem and housing 12. Diaphragm unit 8 is clamped between housing 12 and chamber 9 and includes rubber convolutions 8, a central enlargement 40, and a spring 34 with an annular rim 37 connected to a central ring 38 by curved spring arms 39. A diaphragm stop 41 is supported within chamber 9 by bracket 42. The sensor transmits a signal representative of static or hydrostatic pressure in flow-line 1 to a load 3.
Patent GB-843639-A (GB)
Title: Improvements in or relating to adjustable reclining chairs or like articles of furniture
IPC: A47C1/0355
Filed: 1957-04-09
Abstract: 843,639. Reclining chairs. FLETCHER, P. S. April 9, 1957 [April 23, 1956], No. 11520/57. Class 52(2) A reclining chair with a leg rest 42, carried on a lazytag linkage pivoted to the seat at 40 and to a link 26 pivoted by a link 32 to the chair frame at 34 has a leg-rest extension 68 pivoted at 70 to the leg-rest and moved out into extended position by a link 62 coupled to one arm of a lever 54 when the chair back is moved into the reclined position, the seat 18 and back 20 being pivoted together and to the frame at 22 and link 26 being operated by a member 24 secured to the back 20. In a modification, Fig. 5, the leg-rest extension 168 is operated by a link 162 connected to a projection 160 of bar 154 pivoted to the leg-rest. In a further modification, Fig. 7, the leg-rest 242 is pivoted to the seat 218 by a link 238 and the extension 268 is operated by link 262 connected to an extension 260 of bar 226 which is pivoted to the leg-rest at 258. In another modification, Fig. 9, bar 354 has an extension 360 which operates the extension via link 362. In yet another modification, Fig. 11, the seat 418 is pivoted by a link 438 to member 432 and members 426,448 have a pin and slot connection at 482, the member 426 having an extension 460 which operates the leg-rest extension 468 by means of a link 462. In a still further modification, Fig. 13, the seat is pivoted on a link 538 and the leg-rest extension is operated by an extension 560 of member 554 through a link 562.
Patent GB-738423-A (GB)
Title: A new or improved constructional toy
IPC: A63H17/00
Filed: 1953-04-27
Abstract: 738,423. Constructional toys. HOLLOWAY, M. B. April 27, 1954 [April 27, 1953], No. 11524/53. Class 132(3). A constructional toy comprises components for making models of rocket or jet propelled space ships, aircraft and land vehicles. Fig. 2 shows plates 20 secured together by nuts and bolts into a cylindrical body, semi-conoidal nose section 21 being attached to the body by means of linking pieces 22. In Fig. 3, a model of a jet propelled vehicle is provided with rocket tubes 23 and a fin 24. The wheels 25 are carried on bolts provided with lock nuts. The model shown in Fig. 5 includes perforated flanged plates 30, unflanged plates 31 and angle linking pieces 32. The semi-conoidal sections 21 may be of moulded plastic.
Patent GB-1458363-A (GB)
Title: Ventillators
IPC: F24F7/02
Filed: 1973-03-09
Abstract: 1458363 Ventilator CONT INTERNATIONAL Ltd 8 March 1974 [9 March 1973] 11539/73 Heading A5A [Also in Divisions E2 and F4] A roof mounted ventilator comprises a frame 11 defining with a water drainage channel 14 two ventilation openings 12 closable by two simultaneously operable pivoted flaps 10, biased by springs 50 or 50a to an open position, and a single acting pneumatic jack 16 having return springs 22 and connected to each flap 10 by a cable 41 and a yoke 35 movable radially with respect to the flap pivot axis between a radially inner position and a radially outer position corresponding respectively to the open and closed positions of the flap. The yokes 35 include rollers 36 guided on arms 30 fixed to the flaps 10 and pivotally mounted on the frame 11. The said inner and outer positions of the yokes 35 are defined by stops 37, 38. Each cable 41 includes a fusible link 44 to ensure opening of the flaps 10 in the event of a fire. The flaps 10 are made of or carry heat insulating material and in their closed positions abut above the water drainage channel 14.
Patent GB-1411850-A (GB)
Title: Vacuum forming apparatus and method
IPC: B29C51/18
Filed: 1973-03-09
Abstract: 1411850 Sheet forming PLASTI-VAC Inc 9 March 1973 [13 March 1972] 11542/73 Heading B5A A stationary heater 20 is common to two vacuum formers 21b, 21b<SP>1</SP> and is disposed therebetween, and sheet transporting platforms 27, 27<SP>1</SP> move sheets 5, 5<SP>1</SP> of thermoplastic material into the heater from opposite sides thereof, and then place the sheets over the respective vacuum former, so that one sheet can be heated while another previously heated sheet is being formed.
Patent GB-591387-A (GB)
Title: Improvements in electric transformers
IPC: H01F38/10
Filed: 1945-05-07
Abstract: 591,387. Transformers. FOSTER TRANSFORMERS & SWITCHGEAR, Ltd., and BAGNALL, R. I. May 7, 1945, No. 11562. [Class 38 (ii)] A transformer suitable for supplying discharge lamps comprises a core having two limbs 4, 5, one of which, 4, carries a primary winding 7 and two secondary windings 8, 8, the two limbs being relatively movable to vary independently the reluctances of the magnetic circuits of the two secondaries. The laminations of the limbs 4, 5 are interleaved or otherwise interengage at the ends and their relative movement, which is permitted by the holes 6 through which fixing bolts pass being slots in one of the limbs, allows substantially independent variation of air gaps between the limb 4 and magnetic shunts 9, 9 extending from limb 5 between the windings.
Patent GB-541128-A (GB)
Title: Improvements in and relating to the extraction of an organic gelling compound from vegetable matter
IPC: C09H3/00
Filed: 1940-07-12
Abstract: 541,128. Vegetable colloids. CELEC CORPORATION, Ltd., and BAKER, A. July 12, 1940, No. 11605. [Class 121] In extracting a gel from vegetable substances, by boiling in an alkaline solution, the substances which may be macerated are first soaked in cold or warm water, to remove sugars, glucosides &c. Specifications 537,794 and 539,296 are referred to.
Patent GB-435979-A (GB)
Title: Method and apparatus for generating air foam
IPC: A62C5/00
Filed: 1935-04-15
Abstract: 435,979. Making foam. KOMET KOMPAGNIE FUR OPTIK, MECHANIK, UND ELECTRO - TECHNIK GES., 19, Guerickestrasse, Charlottenburg, Berlin. April 15, 1935, No. 11608. Convention date, April 14,1934. [Class 47 (ii)] In the preparation of air foam, the foaming liquid and air are drawn into and forced through a mixing chamber by a steam injector. Water and foaming-agent-supply pipes 3, 8 open into the suction chamber 4 of the steam-jet 2. The mixed liquids, preferably broken up by a baffle 11 or other sprayer, are forced into a mixing chamber 5, where they meet air drawn in through openings 6 regulatable by a valve 7. The foam is discharged by the pipes 12, 13. In a modification, the chamber 5 has thickened walls with inclined perforations through which the air is drawn. In another modification, the chamber 4 terminates in several mutually-inclined nozzles, and a separate steam-jet injector is provided for the air supply. Dry foaming agent may be drawn in with the air. Preferably, a steam generator is combined with the foam generator, as shown. Steam is generated in the coil 15 by a burner 16, the hot gases from which heat the foaming agent in the tank 9 and may also heat the water supply. The latter comprises a closed vessel 21 connected to a suction or pressure pipe 20 and adapted to supply the pipe 3, and also the coil 15 by way of the pipe 25 and steam-jet injector 22.
Patent GB-215788-A (GB)
Title: Improvements in blanks for gears and method of making the same
Filed: 1924-05-10
Abstract: 215,788. British Thomson-Houston Co., Ltd., (Assignees of Guay, E. J.). May 10, 1923, [Convention date]. Compound sheet materials.-Blanks for helical or other gears are built up from elements cut from a sheet of canvas or duck or other textile material coated with a binder such as phenolic formaldehyde condensation product, the elements and all the trimmings from the sheet being employed in the finished blank and united by compression and, preferably, heat. The canvas &c. is coated on one or both sides with the binder, bakelite with a specific gravity approximately equal to unity preferably being used, and the sheet is dried by heating in a vacuum to remove the solvent. From the square sheet, Fig. 1, circular discs 16 are cut, leaving star-shaped pieces 18 and half-stars 17, which are cut and arranged to form the blank without waste. The parts thus produced are superimposed in a press 28, Fig. 12, heated to soften the binder, and then the plunger 30 is forced down, at first slowly to allow escape of air. The blank is then cooled while still under pressure and finally removed and warmed to complete the. curing process. The finished blank, Fig. 13, has a thin web adapted slightly to yield laterally under heavy shocks.