baber/WOPTO huggingface dataset:
Patent GB-982338-A (GB)
Title: Improvements in or relating to friction brake systems
Inventor: GOODWIN RALPH CLEVELAND
IPC: F16D49/12
Filed: 1962-01-30
Abstract: 982,338. Fluid-pressure drum brakes. WESTERN STATES MACHINE CO. Jan. 30, 1962, No. 3445/62. Headings F2E and F2F. A brake for a centrifugal processing machine comprises a drum 18 engaged by linings 20 which are carried by steel bands 22, anchored at their leading ends, and compressed air applying means comprising cylinders 24, 26 pivotally mounted on the anchor pins 28, 30 and having their pistons connected to the respective bands, the pressure of the compressed air fed to the cylinders being controlled automatically in accordance with the brake reaction forces by a valve 82 actuated by relative movements of elements 52, 54 of a resilient connection between one or each of the bands and its anchor pin. The resilient connection, shown applied to one band only, consists of the elements 52, 54, which have interengaging lugs pivoted together by a pin 62, and a spring 68 inserted within recesses in the elements, one end of the spring being engaged by an adjustable abutment adjustment of which is effected by a bolt 76. The element 52 is mounted pivotally on the pin 30 while a pin 64 connects the element 54 pivotally to a bracket 66 on the adjacent end of the band. The band not provided with the resilient connection has a strap 50 mounted directly on the pin 28. The opposite ends of the bands are connected to the respective pistons each by a bracket 40 and a pin 36 which passes through slots 38 in the walls of the respective cylinder and through a transverse bore in the respective piston. Valve 82 is secured to element 54 has an actuating plunger 88 the end of which contacts an adjustable abutment 92 carried by the element 52. Spring 98 maintains the plunger 88 in contact with the abutment 92. The valve comprises inlet and outlet chambers 116, 118, respectively, interconnected by an opening 120 which is normally opposite a reduced diameter portion of the plunger but which is closable by the plunger on actuation thereof. The valve is arranged in a circuit comprising a solenoidoperated valve 102 controlling the supply and exhaust of air, and a bleed 112 to atmosphere. The pressure of air supplied to the cylinders 24, 26 is thus determined by the rate of flow permitted by the valve 82 in relation to the rate of flow through the bleed 112 so that it is controlled automatically by the valve. In a modified circuit (Fig. 6, not shown) a valve is actuated by each of the brake bands and controls the air supply to the associated cylinder only.
Patent GB-755726-A (GB)
Title: System for changing the coordination of craft control surfaces
IPC: G05D1/08
Filed: 1953-02-06
Abstract: 755,726. Automatic steering control systems. BENDIX AVIATION CORPORATION. Feb. 6, 1953 [March 22, 1952], No. 3461/53. Class 38 (4). In an automatic pilot for controlling a craft about two axes, the ratio of the effect of an automatic control signal on a control surface for one axis, to the effect of the same signal on the control surface for the other axis, has one or the other of two selectable values. As applied to an aircraft automatic pilot, a localizer radio receiver 11 produces a D.C. signal, dependent on horizontal deviation of the aircraft from a radio beam, which is applied to a modulator 20, of the type described in Specification 647,961, [Group XXXIX], producing a corresponding A.C. signal of varying magnitude and phasesense. This A.C. signal is applied through an amplifier 22B and limiter 75 of the type discribed in Specification 679,560 to a transformer 122, one secondary winding 124 of which supplies a signal controlling the ailerons to restore the craft to course mainly by banking, while the other secondary winding 123 supplies a signal producing some movement of the rudder during the turn. A circuit including a thermal time delay tube 52 of the type described in Specification 603,610, [Group XXXVI], introduces a rate anti-hunt component. When the aircraft is about to land, a switch 18 is operated to introduce a glide path radio receiver 10, the D.C. output of which controls the elevators through a computer 200 of the type described in Specification 675,751 to maintain the aircraft on its correct descent path. Operation of switch 18 also changes over a relay 139 from the position shown so that the signal from the localizer receiver has a greater effect on the rudder and less effect on the ailerons, thus producing flatter turns when the aircraft nears the ground.
Patent GB-506779-A (GB)
Title: A new pressure filler for pipettes
IPC: B01L3/02
Filed: 1938-02-04
Abstract: 506,779. Pipette filler. GARDNER, H. W. Feb. 4, 1938, No. 3472. [Class 1 (i)] [Also in Group XVII] A device for filling a pipette from a bottle or other receptacle comprises a rubber bung provided with an aperture A in which the'pipette fits and a rubber bulb with inlet and outlet valves I, O.
Patent GB-806199-A (GB)
Title: Process for producing spheroidal alumina particles
IPC: C01F7/42
Filed: 1957-02-01
Abstract: Spheroidal alumina particles are prepared by ageing alumina hydrogel spheres in a non-aqueous liquid at a temperature above 110 DEG  C. and at a pressure at which the water content of the hydrogel spheres is maintained in a liquid phase.  The gel spheres may be initially formed as in Specification 693,648 by digesting aluminium in aluminium chloride and mixing hexamethylenetetramine solutions with the resulting sol and passing the mixture in droplet form into an oil bath maintained at 49 DEG  to 105 DEG  C.  The non-aqueous liquid in which the ageing is effected may be the suspending medium in the tower in which the hydrogel spheres were formed or alternatively sulfuric acid-refined heavy paraffin oil or neutral oil may be employed.  The ageing is preferably effected at 110 DEG  to 260 DEG C. for a time between five minutes and four hours and at a pressure between 3 and 100 atmospheres.  The aged spheres may be washed with water containing a small amount of sodium hydroxide or nitrate at temperatures from 52 DEG  to 100 DEG  C. or higher if elevated pressures are used.  The spheres may be then dried at 93 DEG  to 135 DEG  C. and calcined at 427 DEG  to 760 DEG  C.  The alumina spheres obtained may be employed in association with 0.1 to 1 per cent by weight of platinum and 0.1 to 8 per cent by weight of combined halogen or with 5 to 40 per cent by weight of an oxide of the metals of Groups IV, V and VI of the Periodic Table, for example chromium, molybdenum and vanadium.  According to an example, aluminium metal cuttings were placed in an aluminium chloride hexahydrate solution and to the resulting aqueous sol was added a 30 per cent hexamethylenetetramine aqueous solution to produce a viscous mixture. The mixture was dropped into an oil bath at 95 DEG  C. to form hydrogel spheres which were then aged at 150 DEG  C. for two hours in paraffin oil under pressure. The aged spheres were water-washed and dried.
Patent GB-644821-A (GB)
Title: Improvements relating to the jointing of metals by electrical induction heating
IPC: B23K13/00
Filed: 1948-02-06
Abstract: 644,821. Uniting by fusion. BENNETTS, H. G., and METROPOLITAN - VICKERS ELECTRICAL, CO., Ltd. Feb. 6, 1948, No. 3555. [Class 83 (iv)] In welding plates, tubes, rods, &c., of high electrical conductivity metal, e.g. brass, copper, &c., by induction heating, a piece of high resistance metal, e.g. steel is located at the joint to augment the heating effect and is left in the completed joint. In welding tubes 1, 2 a metal ring 4 with or without added metal or flux is located adjacent the joint and remains in the joint after welding by a H.F. coil 6. Flat workpieces may be welded similarly. The ring may contain a side or outer channel for flux &c.
Patent GB-102091-A (GB)
Title: A New or Improved Fastener for Securing the Laces of Corsets, Boots, Shoes, or the like, applicable for other suitable purposes.
Inventor: PERRY HANNAH ROGERS
IPC: A43C7/04
Filed: 1916-03-10
Abstract: 102,091. Perry, H. R. March 10, 1916. Lacing-fastenings.-Relates to a fastener for securing laces &c. and comprises an eyelet A having hinged thereto a plug D by which a lace &c. E may be jammed in the eyelet. The eyelet and plug are preferably tapered and the eyelet may be grooved or the side of the plug provided with a curved spring to increase the grip on the lace &c. The eyelet may also be recessed as shown at F, Fig. 5.
Patent GB-198987-A (GB)
Title: Improvements relating to railway points and switches
IPC: E01B7/20
Filed: 1923-02-07
Abstract: 198,987. Lahey, D. E. June 8, 1922, [Convention date]. Point tongues, mounting of; foot-guards. - To provide a foot-guard and prevent vehicle couplings fouling the points, a wedge-shaped block 12 is secured to and moves with the point tongue 3. The block is bevelled longitudinally and curved transversely, and has bevelled ends. The block fits against the side of the rail head and engages a strip 4, with bevelled ends, secured to the stock rail 2. The block 12 and strip 4 are secured by countersunk bolts.
Patent GB-680708-A (GB)
Title: Improvements relating to the construction of sealed vitreous envelopes suitable for use, for example, in constructing radiation-sensitive cells
IPC: H01J5/32
Filed: 1949-02-10
Abstract: 680,708. Light-sensitive cells. BRITISH THOMSON-HOUSTON CO., Ltd., MILNER, C. J., and WATTS, B. N. Feb. 2, 1950 [Feb. 10, 1949], No. 3695/49. Class 40 (iii). A vitreous envelope, having a conducting element, such as a light - sensitive layer, on an inner surface of the envlope and a conductor leading from the element to the outside of the envelope, comprises two vitreous members having juxtaposed rims, with a conducting path extending from the element over the rim of one of the members, and the assembly is sealed along the juxtaposed rims by a glass having a softening- point substantially lower than that (or those) of the vitreous members so that the rims are not distorted during the sealing process and the conducting path is not destroyed or damaged. As shown in Fig. 1 the envelope is formed by tubular members 1, 2, the latter being re-entrant with respect to the former and being provided with a curved flange having a rim fitting that of the member 1. The conducting element 4 formed on the end surface of the tube 2 is connected by separate conducting paths 5<1> extending over the rim of the flanged portion 2<1> and terminating in separate metallic blobs. or patches 5 on the inner surface of the curved flange of the tube 2 and connected to wires. The juxtaposed rims are sealed by a ring 3 of glass of relatively low softening-point such as that described in Specification 592,038, [Group XXIII]. A small tube 6 formed on the curved flange of the tube 2 is sealed after the envelope has been exhausted. If a cooling agent, such as solid carbon dioxide, is included within the envelope during the sealing process, the inner walls of the tube 1 may have a metallic lining 14. The tube 1 may have a separate base-plate 10 of a different vitreous material and is sealed at 12 by glass of low softening point. The conducting element may be a light-sensitive material, and in the case of lead sulphide, the bottom plate may be of a glass permitting the passage solely of infra-red rays, and may also have an annulus 8 of opaque material forming a window 9 of limited area for the passage of light. The metallic conducting path on the bottom surface of the tube 2 may form a central electrode and two side electrodes to provide a three-terminal cell, Fig. 2 (not shown), or, as indicated by Fig. 3 (not shown), may comprise an interleaved comb formation. Lead sulphide may be deposited on the outer surface of the tube 2 before assembly by the methods described in Specifications 656,176 and 680,707. The metallic conducting paths may be formed by the application of a metallic salt, e.g. platinum chloride, in a suitable solution, such as an oil suspension, which is decomposed by heating to leave a metallic deposit.
Patent GB-1122203-A (GB)
Title: New dibenzocycloheptadiene derivatives and their preparation
IPC: C07D295/04
Filed: 1966-01-27
Abstract: Novel dibenzo [a,d] cycloheptadiene derivatives of the formula <FORM:1122203/C2/1> in which R represents hydrogen, alkyl (1-5 carbon atoms), hydroxy alkyl (1-5 carbon atoms), alkenyl (2-5 carbon atoms), alkynyl (2-5 carbon atoms), phenyl, phenylalkyl (7-11 carbon atoms), phenyl alkenyl (8-11 carbon atoms), the said phenyl radicals being unsubstituted or substituted by one or more halogen atoms, and/or alkyl (1-5 carbon atoms), alkoxy (1-5 carbon atoms), nitro, amino or trifluoromethyl radicals, X represents halogen, cyano, trifluoromethyl, alkyl (1-4 carbon atoms), alkoxy (1-4 carbon atoms) alkylthio) 1-4 carbon atoms), or alkane sulphonyl (1-4 carbon atoms), and the piperazine ring is unsubstituted on the carbon atoms or substituted by one or more methyl radicals, and their acid addition salts and quaternary ammonium derivatives are obtained (a) by reacting a piperazine of the formula <FORM:1122203/C2/2> with a reactive ester of the formula <FORM:1122203/C2/3> in which Y represents a reactive ester residue or (b) reacting a reactive ester of the formula Y-R1 in which Y is a reactive ester residue and R1 is the same as R but is not hydrogen, phenyl or substituted phenyl, with an 11-(1-piperazinyl) - dibenzo [a,d] cycloheptadiene of the formula <FORM:1122203/C2/4> followed if desired by conversion of a base so obtained to an acid addition salt or quaternary ammonium derivative thereof.  The compounds obtained when X represents alkylthio or alkylsulphinyl may be oxidized to obtain the corresponding compounds in which X is alkanesulphinyl or alkanesulphonyl.  2 - Methoxy - 11 - chloro - dibenzo [a,d] cycloheptadiene is obtained from the corresponding hydroxy compound with thionyl chloride.  2 - X - 11 - hydroxy - dibenzo [a,d] cycloheptadiene wherein X represents a halogen atom or an alkyl, alkoxy, alkylthio, or CF3, are obtained by cyclizing 2-(4-X-benzyl) phenylacetic acid to obtain an 11-keto-dibenzo [a,d] cycloheptadiene which is reduced.  2 - Cyano - 11 - hydroxy - dibenzo [a,d] cycloheptadiene is obtained by heating 2-bromo-11-keto-dibenzo [a,d] cycloheptadiene with cuprous cyanide followed by reduction of the 11-keto group.  2 - Methanesulphonyl - 11 - hydroxy - dibenzo [a,d] cycloheptadiene is obtained by oxidizing 2 - methylthio - 11 - oxo - dibenzo [a,d] cycloheptadiene followed by the reduction of the 11-keto group.  Pharmaceutical compositions having neuroleptic, sedative, anti-depressant, antihistamine, antiserotin, analgesic, spasmolytic or antiemetic activities and containing the above compounds or their non-toxic acid addition salts, are administered orally, parenterally or rectally.
Patent GB-229307-A (GB)
Title: Improvements in internal combustion engines
IPC: F02M67/00
Filed: 1925-02-11
Abstract: 229,307. Pethoud, S. E. Feb. 11, 1924, [Convention date]. Cylinders receiving liquid fuel. - Liquid fuel supplied to grooves 9, Fig. 1, in the periphery of an oscillating or rotary valve 7, is injected into the cylinder by air highly compressed by a projection 4 on the engine piston 5 within an annular member 6. Three equally spaced grooves 9 are provided, each communicating with passages 12, 15, which, at certain angular positions of the valve 7, register with fuel supply ports 33, 30, formed in the annular seating 29 of the rotary valve 7. During the period of registration of the ports and passages fuel flows from a pipe 36 which is in connection with all the ports 30, through the passages 15, grooves 9, and passages 12, to the ports 33, all of which are in communication with a return pipe 37. Upon rotation of the valve the passages 12, 15 cease to register with the ports 33, 30 and, at approximately the end of the compression stroke, the grooves 9 are each brought into registration with passages such as 20, 23 and 26, Fig. 2, through which air from the compression space 1 passes, carrying with it the fuel from the grooves 9. The valve 7 may be conical, and in the fourstroke cycle engine shown in Figs. 1 and 2 is rotated at one sixth of the crank-shaft speed. In a modified construction. Fig. 8, the rotary valve is replaced by a piston 38, operated by the pressure of the highly compressed air: the piston may, however, be reciprocated from a moving part of the engine. When the piston is at the lower end of its stroke, fuel is supplied from a pipe 50 to a passage 46 in communication with a series of passages 42 - - 45. formed within the piston. These passages, and, in addition. a groove 47 in the wall of the cylinder c within which the piston moves, are filled with fuel. On the raising of the piston against the pressure of a spring 40 by the highly compressed air, the groove 47 is uncovered by the piston and the air traverses the system of passages 42 - - 45, carrying the fuel into the cylinder through the passage 43, which is in registration with a passage 48, 49. Six sets of passages spaced round the periphery of the piston 38 are provided. In an alternative construction, the fuel pipe 50 communicates directly with the passage 46, instead of through the chamber containing the upper end of the piston and the spring 40, as in Fig. 8. Fuel may be supplied to the pipe 50 by gravity, the reservoir being optionally formed in one with the cylinder cover. Leakage between the annular member 6, Fig. 1, and the projection 4 on the piston may be minimized by providing an annular wall on the piston, which closely fits around the outside of the annular member 6 when the projection 4 is in engagement therewith. According to the Specification as open to inspection under Sect. 91 (3) (a), the annular member 6, Fig. 1, within which the air is compressed, may be mounted on the piston. This subjectmatter does not appear in the Specification as accepted.
Patent GB-259901-A (GB)
Title: Improvements in and relating to crank cases and the like
IPC: F02F7/00
Filed: 1926-02-10
Abstract: 259,901. Michel, G. Oct. 13, 1925. [Convention date]. Drawings to Specification. Hollow-ware.-Crank cases or parts thereof are formed from magnesium or magnesium alloys made by the method set forth in Specification 261,528, [Class 82 (i), Metals, Extracting &c.]. A heated blank is deformed by pressure between dies, and a fibrous structure is produced in the material.
Patent GB-913148-A (GB)
Title: Process for the production of inert gas mixtures
IPC: B01D53/46
Filed: 1961-02-02
Abstract: A mixture of nitrogen and noble gases in which free oxygen is absent is produced from air by adding air to a mixture of nitrogen and noble gases in which free oxygen is absent, in a proportion of less than 1 part of air to 10 parts of said mixture, adding sufficient hydrogen to the mixture so formed to react with all the oxygen present in the added air, passing the mixture so formed over a catalyst for the reaction between hydrogen and oxygen to form water, separating a minor proportion of the mixture of nitrogen and noble gases in which free oxygen is absent so formed, and recycling the remainder of said mixture for the addition of further air thereto.  The catalyst may be copper or a platinum metal, on a suitable carrier, and the water formed may be completely removed, e.g. by condensation, or partially removed to give a gas mixture of defined water content by passing the mixture over a drying agent, many of which are specified.  If desired a stoichiometric excess of hydrogen may be added so that the final gas mixture contains hydrogen.  To start the process any inert gas mixture may be used to dilute the air, since nitrogen and noble gas mixtures may not be available.
Patent GB-1010837-A (GB)
Title: Perforation of metal sheets and the like by punching
Inventor: CHARLES RAOUL
IPC: B21D28/24
Filed: 1964-01-30
Abstract: 1,010,837. Perforating. FRANCAISE POUR LA FABRICATION DES TOLES PERFOREES S.A. Jan. 30, 1964 [March 12, 1963], No. 4049/64. Heading B3W. A method of perforating sheet material by punching comprises causing a punch to penetrate the material under the combined action of pressure and vibration. The vibration frequency is between 20 and 170 c.p.s. and advantageously between 50 and 75 c.p.s. The direct pressure is irrespective of the thickness to be cut and is between 5 and 50 kg. per millimetre of cut perimeter. An example states that a hole 3 mm. diameter was punched in 50 kg./sq. mm. sheet steel 5 mm. thick using a direct pressure of 500 kg. as compared with an estimated force of 1500 kg. necessary without vibration. A press for carrying out the method comprises a frame 10, a work support table 7 and a bracket 13 supporting the tool head 14 which is secured to a block 15 comprising a jack 15 and vibrator. The tool head comprises a case in two parts 16a, 16b, a slide 17 carrying the punches 2, and a stripper spring 18. The tool 19a of a compressed air gun 19 extends through an aperture 16c in the case. The gun 19 is moved by the jack 15 as the punches penetrate the material.
Patent GB-856628-A (GB)
Title: Analysis of gases
Inventor: ALLSOPP PETER JAMES
IPC: G01N27/49
Filed: 1957-02-06
Abstract: A galvanic cell for determining oxygen concentration, of the type described in Specification 707,323, in which oxygen is absorbed by the cathode to produce a current which is a function of oxygen concentration, and in which the cathode is not attacked by the electrolyte but the anode is of base metal readily attacked in the presence of oxygen, is improved by forming the cathode to provide a spiral gas path between the cell and outlet.  In the arrangement shown the gas enters the cell at 16 and leaves at 17. The cell is of "Perspex" (Registered Trade Mark) which may <PICT:0856628/III/1> be coloured to eliminate ultra-violet and contains potassium hydroxide electrolyte.  The anode 15 is of lead depending from a platinum wire in a central tube 12 which is closed by porous polyvinyl chloride sheet 28 which permits ionic migration but prevents contamination of the electrolyte by anode particles. The cathode 18 is of silver and is made in the form of a spiral of which the upper edge makes a gas-tight joint with the top cell and the lower dips into the electrolyte.  Thus gas entering the cell through inlet 16 must pass around the spiral before it can escape from the centre of the spiral before it can escape from the centre of the spiral to outlet 17.  An auxiliary cell is provided to produce a known amount of oxygen by electrolysis for calibration purposes and this consists of co-axial tubes 23, 24 dipping into an electrolyte 22.  Gas to be tested passes down the inner tube forces down the electrolyte level and passes up the outer tube to the test cell.  Oxygen may be introduced into the flow by current applied between a central platinum electrode 27 and a further electrode in the outer chamber.  The hydrogen produced at the further electrode escapes to atmosphere.
Patent GB-1449093-A (GB)
Title: Induction furnace
IPC: H05B6/24
Filed: 1974-01-30
Abstract: 1449093 Core-less induction furnace ALLMANNA SVENSKA ELEKTRISKA AB 30 Jan 1974 [31 Jan 1973] 04267/74 Heading H5H A coreless induction furnace has at least one pancake coil 13 lying in a horizontal plane against the bottom of the crucible 14, the turn distribution of the coil 13 or coils varying across the cross-section of the crucible to produce different field strengths across the crucible. This produces a stirring action which causes peaks 17 and troughs 18 in the melt surface. The furnace may be of circular cross-section or as shown of rectangular cross-section. A vertically extending coil 12 may surround the walls of the crucible. The crucible 14 is tamped or bricked against the coils 12, 13 so that they provide support for the crucible. Alternatively non- magnetic metallic support bars (Fig. 4, not shown) or a metallic lining inside the coils may support the crucible. The pancake coil 13 may be removably secured to the furnace when it is provided with the separate support bars. Magnetic yokes are provided for the coils. In Fig. 3 (not shown) coil 13 is replaced by two pancake coils lying side by side, one having a  smaller pitch than the other so that two different height peaks are provided on the melt surface.