baber/WOPTO huggingface dataset:
Patent GB-287056-A (GB)
Title: Improvements relating to centrifugal machines and the centrifugal separation of liquids from mixtures of liquids and solid particles
IPC: B04B11/04
Filed: 1928-03-10
Abstract: 287,056. Sharples Specialty Co., (Assignees of Sharples, L. P.). March 12, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Density separators; discharging; treating substances with liquids.- Solid particles are separated from liquids in a centrifugal apparatus and the solid particles are then treated by a liquid passed radially through the collected mass and centrifugally discharged. An imperforate bowl 10 mounted on a shaft 11 has an internal perforate screen 14 separated from it by a spacing member of woven wire or fabric, which permits a free flow of liquid between the screen and the bowl. A disc 16 extends radially inward from the screen 14 and, with the end of the bowl, forms a chamber 18 in communication with the space 'between the screen and the bowl. A chamber 19 is formed at the other end of the bowl by a disc 17. The liquids and solids for separation are supplied through the pipe 23 to the annular and partly conical channel 24, and thence to the main separating chamber 26. The solids form a cake upon the screen 10 and the liquid forms a hollow cylinder in the bowl. The liquid may be removed by a skimming pipe 27 in the main chamber 26, or by a skimmer 28 in the compartment 18. The position of the skimmers may be adjusted radially by means of screw and nut mechanism so that they may collect liquids at different distances from the axis; the skimmer 28 may be moved so far outwards that it passes beyond the cake of solids. A system of pipes and valves enables liquids withdrawn from the main compartment 26 to be supplied to either of the compartments 18, 19 in order to pass radially inwards through the cake of solids. Other liquids for washing or treating the solids may be supplied through the pipes 47, 44. Liquids discharged centrifugally over the weir edge 60<a> of the bowl are collected in the casing 50 and passed by the pump 51 to storage. A discharging tool 54 for the solids has a screw adjustment under the control of the handle 70 to enable the solids to be dislodged from the bowl to drop into the hopper 55. In a modification, the liquid from the main compartment is discharged over a weir into an auxiliary chamber from which it is discharged centrifugally through radial channels. In another modification, the screen 14 is discarded and an annular perforate partition divides the bowl 10 into chambers 18<1>, 26<1>, Fig. 4. The partition consists of a perforate screen 65<a> spaced from a plate 64a having large perforations by a woven-wire screen. Adjustable skimmers 27, 28 are provided in the chambers 26<1>, 18<1> respectively. Washing liquid may be introduced through the supply passage 24 and withdrawn by the skimmer 28.
Patent GB-242938-A (GB)
Title: Improvements in door or the like fastening devices
Filed: 1925-03-20
Abstract: 242,938. Colson FrÞres. Nov. 15, 1924, [Convention date]. Stud-and-slot fastenings; latches, sliding; striking-plates for latches.-A projection on a door has a notch in which engages a spring- pressed sliding latch mounted on the jamb, the projection being rotated to press the latch out of engagement with the notch for release. The projections may enter a hole in a casing containing the latch, and further, the latch may be mounted on the projection and the notch formed in the casing. The projection 4 is carried on a shaft which rotates in a channel 5 of the plate 6 on the door and is turned by inner and outer handles 7, 8. The projection 4 enters a closed or open slot 14 in the casing 15 in the jamb and the spring latch 1 engages the notch 3 in the projection to secure the door. A spring 13 anchored at one end to the channel 5 and at the other to the shaft keeps the projection 4 with its notch aligned with the latch. The latch is pressed back to allow the door to be opened by rotating the projection 4 by means of the handles. A spring 17 may be provided to secure the latch against retraction. A stud 10 working in the slot 11 limits the turning movement of the handles.
Patent GB-278253-A (GB)
Title: Improvements in or relating to water-jet propelling apparatus for ships
IPC: B63H11/00
Filed: 1927-03-18
Abstract: 278,253. Tawara, H. March 18, 1927. Propelling and steering by water jets.-Water jet propelling apparatus is provided with a defiecting board for reversing which is operated by a lever in common with a subsidiary guide plate adjacent the outlet from the casing of the paddle wheel or screw propeller. A grating on the suction side may be moved relative to a fixed grating for clearing weeds. A reversing plate 9 is hinged on a pivot 12 and normally housed in a casing 11. The operating lever 13 is extended and connected to a guide plate 16. The bars 17 of a grating on the suction side are pivoted and can be reciprocated between fixed bars 19 by a rod 23. The plate 9 may be a single one, and when double can be formed with openings communicating with the delivery stream.
Patent GB-857098-A (GB)
Title: Improvements in and relating to the oxidation of alkyl substituted aromatic compounds
Inventor: DEAN FRED
IPC: C07C51/265
Filed: 1958-03-10
Abstract: A process for the oxidation of a dialkyl substituted aromatic compound or a closely related oxygenated derivative of said compound in which one of the alkyl groups is replaced by an acyl, hydroxyalkyl or aldehyde group, to the corresponding dicarboxylic acid by oxygen or an oxygen-containing gas comprises a first step in which the oxidation is conducted at a temperature within the range 130 DEG -175 DEG  C. and in the presence as a catalyst of a cobalt or manganese salt of an organic acid to produce mainly a monocarboxylic acid and a second step in which the product of the first step is oxidised to a dicarboxylic acid in the presence of a catalyst comprising a manganese salt of an organic acid.  Cobalt and manganese naphthenates and acetates are specified as catalysts for the first stage of the process and manganese acetate or naphthenate, optionally together with cobalt naphthenate or acelate, for the second stage.  Preferably temperatures slightly above the melting point of the monocarboxylic acid are employed in the second stage.  The process may be operated continuously.  The first stage may be carried out under mild conditions to avoid the formation of oxidation products tending to inhibit further oxidation to a dicarboxylic acid and the monocarboxylic acid may be separated from the other oxidation products present in the reaction mixture from the first stage by, e.g. solvent extraction, distillation or crystallisation.  The process is particularly applicable to the preparaation of iso- and terephthalic acids from m- and p-xylenes.  In examples: p-xylene is oxidised, p-toluic acid is extracted from the products by treatment with ether and aqueous sodium hydroxide solution, and oxidised to crude terephthalic acid which is purified by extraction, with acetone, the extract being oxidised with further p-toluic acid (1) and (2) and in a further process the separation of the p-tolmic acid intermediately is carried out by cooling the reaction mixture and filtering off the p-toluic acid and re-cycling the filtreate (3).
Patent GB-879545-A (GB)
Title: Improvements in or relating to flexible receptacles
IPC: B65D75/00
Filed: 1958-03-10
Abstract: 879,545. Flexible bags. JAUMOT, A. March 10, 1958, [May 28, 1957], No. 7579/58. Class 94(2). A process for the formation of flexible receptacles comprises the steps of forming at least one elongated flexible sheet into the shape of a " U " having two wall portions 1, and a bottom portion 3, sealing the bottom portion 3 to each wall portion 1 in the region of their junctions whereby to provide a taillike beading 2 at each junction, and sealing the wall portion together at spaced intervals 4 each sealing extending across the wall portions and the bottom portion with the latter reentrantly positioned between the wall portions. Preferably the seals are made by heat sealing.
Patent GB-734506-A (GB)
Title: Treatment of rubber
Inventor: SEDDON ROBERT MAXWELL
IPC: F16F1/36
Filed: 1952-03-26
Abstract: Resilient vulcanized rubber articles which are subjected in use to conditions of stress are subjected to a heat treatment while they are stressed sufficient to impart a permanent set to at least the surface layers of the articles.  The heating medium may be steam or nitrogen at atmospheric pressure or at 50 to 80 lbs. per sq. inch above atmospheric, or by radiant heat, or by immersing in a molten alloy or salt mixture.  In the example an annular rubber spring member is compressed to 75 per cent of its length and then placed in a steam jacket at 307 DEG F., and the pressure increased in 1 1/2 minutes to 60 lbs. per sq. inch and maintained for 4 1/2 minutes.  After release of the pressure, it is allowed to cool under compression. Specifications 660,135, [Group XXXII], and 686,757 are referred to.
Patent GB-217333-A (GB)
Title: Improvements in means for the automatic control of electric machines
Filed: 1923-03-17
Abstract: 217,333. English Electric Co., Ltd., and Bolton, R. A. R. March 17, 1923. Regulation, automatic. - In systems in which rotary converters in parallel are under automatic control, the voltage on any particular machine is thermally regulated to prevent overload. In one modification a thermostatic device 35 heated from the machine is adapted to actuate a switch arm 33 pivoted at 34 and to turn it to complete circuit, say at 36, through a contact, in this case 27, on a rotatable drum 75 for a field winding of an auxiliary motor 9, which then starts up, cuts out resistance 6 from the field circuit 5 of the converter by moving an arm 7 counterclockwise and rotates the drum. The rotation ceases when contacts 27 and 17 separate unless the arm 33 has been moved sufficiently to make contact at 37 when the same operation is gone through. Cooling, by a similar operation in the reverse direction, reinserts resistance. In another modification, the auxiliary motor is started by an electrodynamic synchronous coupling.
Patent GB-452968-A (GB)
Title: Improvements in or relating to liquid and nicotine traps for tobacco pipes
IPC: A24F1/08
Filed: 1936-03-14
Abstract: 452,968. Tobaccco pipes. AFFOLTER, C. HOLENSTEIN-, 24, Edison-strasse, Zurich, Switzerland. March 14, 1936, No. 7752. Convention date, April 4, 1935. [Class 130] To facilitate cleaning, a trap which serves as a connecting mem ber between the bowl stem and mouthpiece is formed by twc pivotally connected parts 4, 5. The pivot 10 acts as a baffle for the smoke, which traverses grooves 11, 7, 12. The ends of the parts 4, 5 are splayed to ensure a tight connection between the bowl stem and the mouthpiece.
Patent GB-995130-A (GB)
Title: Improvements in pneumatic conveying systems
Inventor: FARRAND WILFRED JOHN
IPC: B65G53/46
Filed: 1962-02-28
Abstract: 995,130. Pneumatic conveyers. HENRY SIMON Ltd. Feb. 20, 1963 [Feb. 28, 1962], No. 7767/62. Addition to 995,129. Heading B8A. In a positive-pressure system for conveying material through a ring system f, h, Fig. 1, to a multiplicity of receptacles g according to the parent Specification, air-lock feeders m other than rotary cell-wheels are provided for releasing material from the receptacles g. The feeders may be of the type shown in Fig. 1 having sequentially opened valves n, p and a scavenging air inlet t. Alternatively the material may be released through a solids pump comprising a flexible tube engaged by eccentrically moving rollers as described in Specification 837,129.
Patent GB-557725-A (GB)
Title: Improvements in and relating to contact mountings, more particularly for centrifugally operated electric switches
IPC: H01H35/10
Filed: 1942-06-08
Abstract: 557,725. Contact mountings; centrifugal switches. BRITISH THOMSON-HOUSTON CO.; Ltd. June 8, 1942, No. 7804. Convention date, June 6, 1941. [Class 38 (v)] A contact assembly for a switch, described in connection with centrifugally operated mechanism as in Specification 504,678, comprises an actuation member with a movable contact, supported on a base-plate by resilient means, with a fulcrum point resting on the base so that, when pressed, it rocks about the fulcrum to close contact on to a fixed contact on the base. Fig. 3 shows the parts with contacts 30, 35 separated and the sliding collar 21, operated by the centrifugal mechanism 22, 23, in the running position. When the speed falls to the desired degree the collar 21 bears on projection 33 on an H-shaped actuating member 32 bearing contact 35, and carried on base-plate 26 by a forked plate spring 36 riveted to the member at 41, causing the member to rock about an extended and bent-over part or parts 43 as a fulcrum, until the contacts 30, 35 engage, further movement of the collar rocks the actuating member 32 on the contacts and lifts the fulcrum 43 from the base-plate.
Patent GB-1004945-A (GB)
Title: Improvements in or relating to mass spectroscopes
IPC: H01J49/28
Filed: 1963-02-27
Abstract: 1,004,945. Mass spectrometers. H. EWALD. Feb. 27, 1963 [Feb. 28, 1962], No. 7813/63. Heading H1D. In a mass spectrograph or mass spectrometer using the parabola method with magnetic and electric fields deflecting the ions in perpendicular directions, in order to focus deflected ions of like mass and energy at one point, the entry and exit surfaces of the magnetic field are mutually inclined to form a sector field while condenser plates which provide a sector-shaped electric field follow inner and outer boundaries of an arcuate passage through which the particles pass, and the plane of curvature of the mean line of this passage is perpendicular to the magnetic field. The Figure shows the magnetic sector field #m followed by the electric sector field #e as viewed in two perpendicular directions. The condenser may be cylindrical or toroidal and the magnetic field boundaries may be curved. The polepieces of the electromagnetic providing the magnetic field may be provided with semi-cylindrical, rotatable inserts to vary the inclination of the field at the entry or exit boundaries. The condenser may also be rotated. Reference is made to the two sector fields being superimposed and either field may precede the other. Equations for calculation allowing for the fringe effects of the magnetic field are given.
Patent GB-818612-A (GB)
Title: Improvements in or relating to hydraulic variable pitch propellers
Inventor: CHILMAN JOHN ALFRED
IPC: B64C11/38
Filed: 1957-03-08
Abstract: 818,612. Variable pitch propellers. ROTOL Ltd. July 3, 1957 [March 8, 1957], No. 7826/57. Addition to 742,148. Class 114. The device of the parent Specification is modified in that the withdrawal of the cruising-pitch stop, constituted by a chamfered edge 26a on the pitch change ram 16 coacting with stops 20 on spring fingers 21 held in their outermost projecting position by the outer step 22b of the movable stop retaining ring 22, is effected by the pitch fining pressure fluid whereas the withdrawal of the next stop, the flight fine pitch stop, constituted by the shoulder 26b on the ram 16 engaging the stops 20 when held by the middle step 22c of the retaining ring 22, is effected by the forward piston 30 actuated by the separate pressure fluid supply, i.e. the " third oil line ". As shown, the pitch changing ram 16 is formed with a stepped forward sleeve 26 whose steps 26a, 26b, 26c cam successively engage stops 20 on resilient fingers 21, the stops being held in any of three operated projecting positions by the stepped retaining ring 22. This ring slides on a core 23 forming part of the main shaft 18, against the action of a spring 24, when a sleeve 39 solid with annular pistons 37, 38 is moved by pitch fining fluid to allow the stops 20 to move down from the outer step 22b on to the middle slip 22c of the retaining ring 22, i.e. into the position shown. Introduction of the fluid to spaces 35b, 36b behind the pistons is controlled by a piston valve 41 having an annular recess 43 normally connecting these spaces with a drain passage 45. A relief valve (not shown) normally controls the pressure of the pitch fining fluid. Enforced closure of this causes pressure to build up in a chamber 46 behind the piston valve 41 until, overcoming the pressure of the valve spring 44, it displaces the valve and flows into the chambers 35b, 36b. The pistons move against spring pressure which returns them when the pressure drops on movement of the ram piston 16, this movement causing the sleeve 26 to enclose the stops 20 and make them hold the ring 22 in its intermediate position. The cruising fine pitch stop is withdrawn by further movement of the ring 22 permitting the stops 20 to descend to its lowest step 22c. The ring is camed by a sleeve having an inturned end 22e. A shoulder 29a on a sleeve 29 rigid with the piston 30 engages this flange to move the ring 22 when pressure fluid from the third oil line is introduced behind the piston through ports 57, 56 and a passage 55. The piston 30 can be used on occasion to withdraw all the stops quickly independently of the pistons 37, 38. It may also be arranged to provide extended movement of the ring 22 to permit the ram 16 to move the propeller into reverse pitch.
Patent GB-724709-A (GB)
Title: Method of making magnetic cores
IPC: C04B35/26
Filed: 1953-03-20
Abstract: 724,709. Magnetic structures. STANDARD TELEPHONES & CABLES, Ltd. March 20, 1953 [March 26, 1952], No. 7830/53. Class 38 (2). The hysteresis losses of ferrite cores are kept down at the expense of a somewhat lower permeability by sintering for relatively short periods. Nickel zinc ferrite was made by mixing the oxides wet in a ball mill, drying, pressing into toroidal cores and sintering for 10 minutes at 1300‹ C. in air, cooling to 800‹ C. in the oven, and thereafter in air. A similar core made of manganese zinc ferrite was annealed in nitrogen for 40 minutes at 1250‹ C. and cooled in nitrogen to 800‹ C. and thereafter in air. A small amount of rutile may be added.
Patent GB-579481-A (GB)
Title: Improvements in or relating to speed-governors for machines
IPC: G05D13/00
Filed: 1944-04-27
Abstract: 579,481. Speed governors. DERUNGS, E.A. April 27, 1944, No. 7909. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 27, 1944.] [Class 57] A centrifugal governor actuates a series of devices, such as rings 31, 32 on a rod 23, and a ring 41 on .a sleeve 40 slidable on the rod, by which controls, e.g., of the motor gear box and clutches and brakes of a vehicle are .effected, the,. relative positions of these devices being adjustable during running, e.g., by a pinion 21 engaging a toothed sleeve 35 having screw engagement with the sleeve 40 the pinion 21 may be driven at a speed varying with the power of the motor. A pulley 14 loosely mounted on the governor shaft normally drives this shaft through balls 15 engaging pits in the pulley and in an enlargement on the shaft. Sudden change of velocity causes these balls to rise from the pits, separating the pulley and the shaft enlargement and so actuating a braking device, e.g., through an electric switch. The controls may operate through electric or fluid pressure servo motors.
Patent GB-526287-A (GB)
Title: Improvements relating to slidable doors
IPC: E05D15/06
Filed: 1939-03-11
Abstract: 526,287. Doors. WILMOT-BREEDEN, Ltd., and PATCH, A. W. B. March 11, 1939, No. 7958. [Class 20 (iii)] [Also in Group XXX] A sliding door n is suspended from a pair of superposed tracks c by means of a carriage e having rollers d resiliently mounted thereon by rubber bushes i and adapted to engage, some the upper track as in Fig. 4, some the lower track as in Fig. 3. The tracks may be mounted on a channel girder b.
Patent GB-489795-A (GB)
Title: Improvements in and relating to devices for emptying dust pails into dust carts
IPC: B65F3/12
Filed: 1937-03-19
Abstract: 489,795. Vehicles for conveying refuse. NAAMLOOZE VENNOOTSCHAP PLAATWERKERIJ EN VERZINKERIJ VOORHEEN P. BAMMENS & ZN., and NAAMLOOZE VENNOOTSCHAP FABRIEK VOOR WAGENBOUW, IJZERCONSTRUCTIE, EN BRANDWEERMATERIEEL VOORHEEN J. GEESINK & ZONEN. March 19, 1937, No. 8131. Convention date, Feb. 23. [Class 108 (i)] In a device for emptying dust bins into dust carts in which the bin is hooked thereto, a tipping member is provided pivotally mounted on the cart and provided with means, such as a spring, which assists the tipping and is re-charged or re-tensioned on return of the tipping member to normal bin-receiving position. The bin 30 is hooked by means of a pin 3 to lugs 2 carried by the rear wall 1 of the dust cart and to this rear wall is also pivoted a tipping member 5 having a yoke 7 at its lower end adapted to engage the lower end of the bin. The member 5 is pivoted at 6 below the pin 3 so that on tipping relative movement of the member 5 and the bin 30 causes the yoke 7 to grip the bin. The bin lid is provided with a loop 19 adapted on tipping to engage a spring bolt 18 on a flap 16 which covers the discharge opening of the cart and the opening movement of the flap 16 is caused by the spring 17. Pins 20 carried by the flap 16 and having rollers 21 are caused during movement of the flap to engage the loop 19 and so lock the bin lid to the flap 16. The initial opening movement of the flap is caused by cams 22 on the tipping member 5 and on further opening of the flap and tilting of the bin the bin cover is fully opened to allow discharge of the bin's contents. The tipping member 5 has pivoted thereto one end 10 of a spring casing 11 having the assisting spring 12. The tilting member is provided with a plate 14 adapted to cover the discharge opening during discharge.
Patent GB-1158382-A (GB)
Title: Apparatus for Conveying a Granular Product Suspended in a Gaseous Current and Separating the Product at the end of the Conveying Operation
Inventor: HOING CHRISTINE ELISABETH
IPC: B65G53/00
Filed: 1967-02-21
Abstract: 1,158,382. Pneumatic conveyers. C. E. HOING. 21 Feb., 1967 [10 March, 1966], No. 8188/67. Heading B8A. Granular material in an annular container 6 passes through apertures 7 in the base of the container on to the top of a plate 2, formed as a converging inlet nozzle and connected to the discharge pipe 3. The material passes through apertures 4 in the plate 2 into a gas stream flowing through the space between the plate 2 and a lower plate 1 to the pipe 3. A valve member 8 opens when the gas flow stops to allow material which has settled in the pipe 3 to be removed. The container 6 is supported on springs 14 on guide posts 13 the arrangement being such that when the flow of material into the container stops, the container rises, whereby a collar 10 on the pipe 3 closes the outlet apertures 7 and a switch 9 cuts off the gas flow At the top of the pipe 3 a separator is provided, Figs. 3-7 (not shown).