baber/WOPTO huggingface dataset:
Patent GB-848977-A (GB)
Title: Improvements relating to separators for liquids
Inventor: GRIFFITHS JOHN MALCOLM
IPC: B01D17/02
Filed: 1957-06-27
Abstract: 848,977. Gravity-separation apparatus. HOPKINSONS Ltd. April 8, 1958 [June 27, 1957], No. 20275/57. Class 46. Water from mixture entering at 2, Fig. 1, leaves at 8, and oil passes through a perforated plate 5 to leave at 11. A sleeve valve 10 secured to a float 13 (which sinks in oil and floats in water) controls both outlets. In Fig. 2 two float-operated sleeve valves are provided, one for each outlet. Float 15 is normally surrounded by water and float 17 is normally surrounded by oil, both outlets being thus open. In Fig. 3 (not shown), a horizontal arm is hinged at one end to an end wall of the tank and carries a float at its other end. The arm engages between pins projecting from a vertical sleeve valve controlling outlets in the top and bottom wall, respectively, of the tank. The baffles and plate are omitted. According to the Provisional Specification the float or floats may be designed so as to take the shape of the sleeves and control the ports directly.
Patent GB-314234-A (GB)
Title: Fuel-less power generating apparatus
IPC: F03B17/04
Filed: 1928-07-13
Abstract: 314,234. Stead, F. July 13, 1928. Self-driving machines.-A self-driving motor of the buoyancy type comprises an endless belt 1 made up of linked shells 2. Each shell has a concave end and a convex end so that adjacent shells nest together during their travel. On one side the shells are arranged in a tank 14 containing water or mercury, and it is stated that buoyancy will create an unbalanced force which will cause rotation. Three of the pulley shafts are geared together by chains 6 and the fourth is adjustable to take up slack. A governor 15 and a controlling brake 16, 20 are provided.
Patent GB-1328923-A (GB)
Title: Production of lactams
IPC: C07D201/04
Filed: 1971-04-19
Abstract: 1328923 Lactams from cycloalkanone oximes BADISCHE ANILIN- & SODA-FABRIK AG 19 April 1971 [27 Jan 1970] 20396/71 Heading C2C In the process for the production of a lactam by Beckmann rearrangement of a cycloalkanone oxime at a temperature of from 210‹ C. to 450‹C. in contact with a fluidized supported catalyst containing boric acid, a liquid whose boiling point is below the rearrangement temperature and is an aliphatic, cycloaliphatic, unsubstituted or halo and/or nitro-substituted aromatic hydrocarbon, or the desired lactam itself, is introduced into the fluidized catalyst bed together with or separate from the oxime. The hydrocarbon is suitably toluene. Examples describe the preparation of #-caprolactam, methylcaprolactam and capryllactam.
Patent GB-452178-A (GB)
Title: Improvements in or relating to advertising and the like signs
IPC: G09F13/06
Filed: 1935-07-17
Abstract: 452,178. Signs. UNION PATENT CO., GES., 150, Friedrichstrasse, Berlin. Julv 17, 1935, No. 20405. Convention date, July 17, 1934. [Class 3 (ii)] A sign plate comprises a sheet 1 of a transparent or translucent synthetic resm provided with raised integral letters 3, the portions of the sheet between the letters being covered by a layer 4 of opaque material. The sign plate is preferablv mounted at the front of an illuminated casing and may be formed by milling or moulding. The letters have a substantially rectangular cross-section which may taper as shown. Specification 294,225, [Class 3 (ii)], is referred to.
Patent GB-848597-A (GB)
Title: Improvements in or relating to master cylinders for liquid pressure braking systems
Inventor: CHOUINGS LESLIE CYRIL
IPC: B60T11/20
Filed: 1958-06-25
Abstract: 848,597. Hydraulic brakes. AUTOMOTIVE PRODUCTS CO. Ltd. May 27, 1959 [June 25, 1958], No. 20430/58. Class 103 (1). In order to reduce the length of a tandem master cylinder having two separate liquid chambers each adapted to be connected to one of two groups of brakes, the sealing member 29 in the main piston 27 which controls breather port 47 associated with that piston and its reservoir chamber 14 is positioned at the rear end of an annular clearance space around the piston which is in constant free communication with the master cylinder chamber 49 between the main piston 27 and the floating piston 32 by means of an apertured flange 31 provided at the front end of main piston 27 which also acts as a guide means for the main piston in the master cylinder chamber. One group of brakes is operated by the pressure in the chamber 48 in front of the floating piston 32 and the other group is operated by the pressure in the chamber 49 between the floating piston 32 and the main piston 27. Should a leak develop in the connection between the front chamber 48 and the wheel cylinders, the initial pressure created by the main piston pushes the floating piston forwardly until it is held by engagement of its rear flange 34 with the peg 43 and the pressure can then build up in the rear chamber 49 to apply one group of brakes fully. Passages 45 and 46 connect the floating piston 32 and the main piston 27 with their respective reservoir chambers 13 and 14. In the inoperative or retracted position shown the breather ports 44 and 47 are open to the chambers 48 and 49 by virtue of the positions of sealing rings 36 and 29 respectively. The pistons 32 and 27 are recessed at 38 and 39 from their forward ends to accommodate return springs 41 and 42 respectively.
Patent GB-1006850-A (GB)
Title: Process for preparing dyeable textile articles
IPC: D01F1/10
Filed: 1963-05-23
Abstract: The invention comprises polycondensates obtained by reacting a dihalo hydrocarbon with an aliphatic or heterocyclic di-secondary-amine. The polycondensates may be mixed with a polyolefin to form a dyeable composition which may be melted and extruded to obtain fibres, films and tapes.  In examples polycondensates are obtained by reacting piperazine with dichloroethane, 1,3-dibromopropane, 1,6-dichlorohexane, 1,3 - dichloro - 2 - propanol, 1,10-dichlorodecane, and with octadecylchloride and dichloroethane, by reacting trans-2,5-dimethyl-piperazine with dibromoethane, and by reacting octadecylamine and piperazine with dichloroethane; the polycondensates are mixed with polypropylene and the mixtures formed into fibres which are dyed.  Other diamines mentioned are dimethylene diamine, diethylenhexamethylendiamine, dibutyl-n-hexamethylendiamine and dimethyl - p - phenyldiamine; other polyolefins mentioned are polyethylene, polybutene-1, polypentene-1, poly-4-methylpentene-1 and polystyrene.
Patent GB-143832-A (GB)
Title: Drawing presses or the like
IPC: B21D24/12
Filed: 1919-08-21
Abstract: 143,832. Bliss Co., E. W., (Assignees of Klocke, W., and Dobson, J. E.). May 17, 1919, [Convention date]. Metal-working presses.-Means for reciprocating the bed 1', Fig. 3, or the blank-holder 1, Fig. 1, in a cupping or like press comprises a rock-shaft 19 operated from a lever 25 or a sliding camguided part such as the roller 50, so that a small motion of the lever 25 or roller 50 gives a large angular motion to the rock-shaft 19, and yet allows the rock-shaft a long dwell in the closed position of the bed or blank-holder. The lever 25 or roller 50 is reciprocated by a connecting-rod 31, and forms with the link 21 a toggle mechanism acting on the crank 20 on the shaft 19. The bed or blank-holder is driven from the shaft 19 by cranks 18 and links 17 which preferably form a second toggle motion, the shaft 19 preferably rotating through 180 degrees. During the long dwell, when both toggle devices are closed, a plunger operated by a crank 4 and rod 3 works through the blank-holder 2'. The guide-cam 51 may be formed with a straight lower portion and an upper portion curved so that the link 21 simply turns about its pivot on the crank 20 for the desired time of the dwell of the reciprocating part in its closed position.
Patent GB-148905-A (GB)
Title: Improvements in hammers
IPC: B25D11/10
Filed: 1920-07-10
Abstract: 148,905. Heilbronn, L. July 10, 1920. Percucssive tools.-The hammer c of a percussive drill is impelled by springs h, o acting consecutively. The springs are arranged around a rod g on either side of a head k which is connected to the rod g by a spring-controlled cam-released catch b, The springs are compressed by cams a on a manuallyoperated disk b which act upon a roller e carried by the head c. The spring h produces the first part of the forward movement of the head c. When the catch l engages the roller o, the spring i is released to complete the stroke. The drillrotating ratchet v is operated by a spring pawl w on a slide, reciprocated by the head c through a bell-crank and link.
Patent GB-1045177-A (GB)
Title: Improvements in or relating to pneumatic braking distributors
IPC: B60T17/22
Filed: 1963-05-24
Abstract: 1,045,177. Fluid-pressure brakes. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. May 24, 1963 [June 6, 1962], No. 20762/63. Addition to 928,595. Headings F2E and F2F. The distributer valve for pneumatic brake installations of vehicles disclosed in the parent Specification is modified in that the valve is of the duplex or triplex type, wherein the valve operating piston 26 of each section is actuated through a spring 28 by a plunger 34 engaging, by a head 32, an end of a rocking lever 10 acting to balance the forces exerted on the various plungers 34 due to a centrally applied force acting through a forked operating lever 14 and cross-pin 12, and that a single control switch I for controlling an exhaust brake and signalling its operation to the driver is arranged to be actuated by the rocking lever. This is done by arranging that the pin 12 is recessed within a bore in the operating fork so that the switch plunger enters the recess in the rest position. When the driver depresses the brake pedal to operate the forked lever 14 the switch plunger is forced out of the recess to operate the switch as pin 12 moves to take up play between it and a surrounding sleeve 30 in the rocking lever 10, after which the plungers 34 are moved to apply pressure via the springs 28 to the pistons 26 each of which acts on a combined inlet-exhaust valve member 16-18 to first close an exhaust passage 24 in the piston 26, by engaging valve face 16, and then to open the valve 18 to admit air from an inlet 20 to the brake connection 22. Additional laterally arranged pre-loaded springs 50 also oppose the force produced by the pedal on each plunger 34, each spring 50 being enclosed between telescoping cups 42, 46, the latter cups providing recesses to receive pins 38 on the ends of a balance lever 36 secured to or integral with the plunger 34, so that the springs 50 exert a second pressure on the pedal after the valve 18 has started to open. A fluidpressure piston Q is also arranged in the distributer housing so that fluid pressure acting in a chamber P may be used to operate the distributer valve, the piston acting via a plunger R on the lever 10.
Patent GB-1461220-A (GB)
Title: Apparatus for 'he generation of electric waveforms
IPC: G06G7/26
Filed: 1975-05-16
Abstract: 1461220 Waveform generators RC DRISCOLL 16 May 1975 20775/75 Heading H3H sin α A wave-form (e.g./α) with an adjustable   rest period between repetitions of the wavefoam is generated by counting clock pulses from generator 4 up and then down in counter 3 addressing programmed read-only memory 1 connected to digital-to-analogue converter 2, and interrupting the feed of clock pulses to counter 3 for a predetermined adjustable time when counter 3 has returned to zero. The frequency of clock generator 4 and the length of the interrupting pulse from multivibrator 5 are adjustable by selection of capacitors 9, 11 with a fine voltage control 10, 12. Transistor 13 holds the selected rest period capacitor 11 discharged until NAND gate 8 detects the zero state of counter 3. Switch 19 allows selection of a mode of operation in which only one cycle of the waveform is generated. The output of the digital-to-analogue converter 2 may be heterodyned with a carrier frequency, preferably suppressed during the rest periods. The invention is useful for testing audio equipment.
Patent GB-862186-A (GB)
Title: Absorbent product
IPC: A61F13/15
Filed: 1959-06-17
Abstract: A sanitary napkin which is curved to fit the user's body and tapered inwardly from its ends towards its middle, as in the parent Specification, incorporates a layer of thermosetting material of sufficient stiffness to hold the napkin in its arcuate shape.  The layer of thermosetting material may be a sheet of phenol-formaldehyde, urea-formaldehyde or resorcinol-formaldehyde resin.  In the preferred manner of making a napkin an absorbent pad is laid on a sheet of such material, which is of slightly greater width than the pad, so that when both are enclosed in a wrapper the edges of the thermosetting sheet are folded up around the edges of the pad.  The napkin is then formed to the desired arcuate form and its temperature is raised to cause the resin to harden.  In order also to avoid distortion in use, the pad is attached centrally to a continuous strip of fabric, the ends of which form the attachment tabs of the napkin.
Patent GB-1513144-A (GB)
Title: Apparatus for providing air enriched with oxygen
IPC: B01J7/00
Filed: 1975-05-16
Abstract: 1513144 Apparatus for providing oxygen-enriched air GENERAL ELECTRIC CO 16 May 1975 [4 June 1974] 20861/75 Heading B1L Air is drawn into intake area 24 of a portable oxygen enricher by fan 26 and passes into chamber 35 containing vacuum pump 38. Air warmed by this pump is vented by slidable valve plate 51 through port 46 or alternatively unwarmed air is vented through port 42 into the flow chamber 44 containing membrane cell array 60 so that the temperature of the air may be controlled. The cells are selectively permeable to oxygen and the enriched air is drawn by the pump through manifolds 72 and tube 74 to a scrubber 76 to remove NO 2  and SO 2 , then to heat exchanger 78, separator 80 for removing water vapour, flow restrictor 89, bacterial filter 94 and to outlet 95 which connects to an oxygen administration set including a mask or cannula worn by a patient. A dust-filter 100 is provided in intake channel 30. A failure warning device 104, 105, 106 is shown. The membranes may be silicone rubber or polyphenylene ether.
Patent GB-898227-A (GB)
Title: Method of burning particulate ceramic material and a shaft furnace therefor
IPC: F27B1/00
Filed: 1958-06-30
Abstract: 898,227. Shaft furnaces. KOPPERS G.m.b.H., HEINRICH. June 30, 1958 [July 5, 1957], No. 20890/58. Class 51 (2). A shaft furnace for burning loose ceramic material comprises a refractory shaft 10 with a widened wall in the burning zone having mixing chambers 13 therein disposed tangentially of the shaft, slots 14 discharging the air/gas mixture for flameless combustion in the charge interstices, and offtakes 17 leading to a main flue 18. Heated air is supplied by a duct 15 coiled round the lower part of the shaft and goes through ducts 16. The shaft diameter is preferably not more than 500 mm. A modification, Fig. 3.(not shown), has a central flue formed with waste gas ports, and another modification, Fig. 4 (not shown), is of rectangular cross-section with air/gas nozzles and waste gas offtakes in opposite walls.
Patent GB-741994-A (GB)
Title: A device for spreading liquid adhesives
IPC: B27G11/02
Filed: 1952-08-20
Abstract: <PICT:0741994/III/1> A device for dispensing liquid adhesives in film form comprises a cap 4 for a container, having a pouring aperture 4b and a pair of side webs, such as 1, disposed on opposite sides thereof and bridged by a guide member 3 over which the adhesive will flow when the container is inverted, the guide member 3 terminating in an edge 3a which is normal to the side webs and close to the edges (such as 1a), thereof, which are remote from the cap, and parallel with each other for contacting with and sliding over the surface to be coated.  The guide 3 may be transversely curved, either convexly or concavely, or longitudinally corrugated.  A tongue 5 may extend from the cap 4 towards the member 3, and a slide 7 supported by guide bars (such as 9), may be provided adjustably to restrict the slot 6 so produced.  Strengthening webs 10, 11 extend between the side webs. In a modification, a resilient member 3 is attached to the side webs near its proximal end only, and the web 10 is a pivoted member, its free end pressing against that of the web 3.
Patent GB-427879-A (GB)
Title: Improvements in and relating to gearboxes for power transmission on locomotives and other mechanically propelled vehicles
IPC: F16H3/66
Filed: 1933-07-25
Abstract: 427,879. Variable - speed gearing. EDWARDS, W. S., Castle Engine Works, Stafford. July 25, 1933, No. 20969. [Class 80 (ii)] Epicyclic gearing for locomotives and other vehicles is combined with reversing gearing applicable to each of the forward speeds, one carrier only being employed for all the planet wheels. The output shaft W is reversed by means of a sliding dog A<1> engageable with either of the oppositely rotating gears V, Z. Planet idler wheels are used in order that external and internal annulus wheels may be used as reaction members on being checked by brakes placed outside the gear-box. A driving shaft A carries a sun wheel B in mesh with planet wheels C fast on the same spindles as wheels D, which drive idler wheels F and mesh with an internal annulus E. The wheels F also engage a small external annulus J on a shaft 0 which carries a brake drum M placed outside the casing. The wheel E is coupled with a brake drum N by a sleeve P. Parts K, L constitute a carrier which imparts the drive to a shaft U through a gear R. Reference has been directed by the Comptroller to Specifications 19559 /96, [Class 80], 104,161 and 247,540, [both in Class 80 (ii)].
Patent GB-1274162-A (GB)
Title: An electrical keyboard
Inventor: KRAKINOWSKI MORRIS
IPC: H01H13/702
Filed: 1971-04-19
Abstract: 1,274,162. Retractive switches. INTERNATIONAL BUSINESS MACHINES CORP. 19 April, 1971 [16 Feb., 1970], No. 20970/71. Heading H1N. [Also in Division B6F] An electric contact making keyboard comprises a base 10 with an array of first electrical contacts 12, 12A spaced thereon. An apertured insulating layer 14 overlays the base, and a diaphragm 18 overlays the insulating layer. Second electrical contacts 20, 20A are spaced on the underside of the diaphragm in registration with first contacts 12, 12A, via the apertures in layer 14. An apertured guide plate 24 is provided above and spaced from the diaphragm 18. Each aperture has a plunger 22 with a wider and larger upper portion 22A and a second narrower and lower portion 22B which is in registration with the first and second contacts. At least the lower portion of plunger 22 comprises an elastomeric material. An elastomeric nomenclature sheet on the upper surface of the guide plate 24, seals the mechanism against dust and dirt. An apertured metal plate 30 holds the nomenclature sheet in position and prevents the accidental triggering of the keyboard.
Patent GB-742793-A (GB)
Title: Improvements in the production of linear polyesters
Inventor: LINCOLN JAMES
IPC: C08G63/06
Filed: 1952-08-21
Abstract: Linear polyether-esters containing aromatic nuclei and phenoxy-ether linkages which may be melt spun to give filaments having good cold drawing properties are obtained by heating a cyclic glycol carbonate with a composition consisting of bifunctional compounds containing only phenolic and carboxylic ester functional groups, substantially equal numbers of phenolic and carboxylic ester groups being present, and the carboxylic ester groups being esters with a monohydroxy compound which is volatile under the reaction conditions.  The composition may consist of a dihydric phenol and a terephthalic acid ester.  The constituents of the composition may be present in combination as an ester of an aromatic mono-carboxylic acid having a nuclear hydroxyl group, e.g. an ester of phydroxy-benzoic acid.  Thus by reacting dimethyl terephthalate, hydroquinone and cyclic ethylene carbonate, a polyester is obtained which is indistinguishable from the product obtained by reacting 1,4-dihydroxy-ethoxybenzene and dimethyl terephthalate as described in Specification 678,264. There are specified as reactants: (1) diphenols-hydroquinone, 2,5-dichlor-hydroquinone, 4,41-dihydroxy-3,5,31,51-or 2,5,21,51 - tetramethyl - diphenyl and 1,5-, 2,6- and 2,7-dihydroxy-naphthalenes; (2) dicarboxylic acids-particularly those linked to aromatic nuclei-terephthalic acid, 4,41-dicarboxy-diphenyl and 4,41-dicarboxy-a ,b -diphenoxyethane; (3) esters of nuclear chlorinated or methylated para-hydroxy-benzoic acids; (4) ester exchange catalysts-Na, K, and Li metals; alkali metal alcoholates; (4) cyclic carbonates-ethylene, trimethylene, propylene, 1,2- or 2,3-butylene carbonates.  In examples: (1) equimolecular proportions of 4-hydroxy-benzoic acid and cyclic ethylene carbonate reacted in presence of magnesium ribbon at 230-280 DEG  C.; (2) hydroquinone, dimethylterephthalate and cyclic ethylene carbonate were similarly reacted.  Specifications 707,913, 716,877 and 719,706 also are referred to.
Patent GB-408127-A (GB)
Title: Recovery of gold from colloidal slum and other colloidal materials
IPC: C22B11/08
Filed: 1933-07-26
Abstract: In a process for recovering gold from colloidal materials, the material is formed into a slurry with aqueous cyanide solution, and during agitation of the mass there are added a depolarizing agent, which may be aluminium sulphate, and an alkali, which may be lime. After settling, the clear solution is siphoned off and treated with zinc or carbon for the precipitation of the gold. The zinc may be arranged in a compartmented trough, that from the first compartment being periodically removed, roasted, fluxed, and smelted for the final recovery of the gold.
Patent GB-205914-A (GB)
Title: Improvements in valves
IPC: F16K5/02
Filed: 1922-08-03
Abstract: 205,914. Thompson, G. H. Aug. 3, 1922. Lift valves; actuating-mechanism; leakage, stopping.-A plug lift valve is actuated by a rotatable eccentric valve, which engages with the stem of the plug. The casing is provided with a through-way 1 controlled by a conical plug B which is pressed away from its seating by i spring 10. The casing is surrounded by a ring D having an eccentric groove 20 in which the stem 16 of the plug engages, so that the valve is actuated by rotating the ring D. The annular end of the plug is provided with a ridge 14 which engages with an annular rubber washer 18 when the valve is open, to prevent leakage.
Patent GB-1102472-A (GB)
Title: Improvements in or relating to fuel supply systems for internal combustion engines
Inventor: BRADBURY CYRIL HENRY
IPC: F02M27/08
Filed: 1963-05-28
Abstract: 1,102,472. Fuel injection systems. SIMMS MOTOR UNITS Ltd. Aug. 28, 1964 [May 28, 1963], No. 21181/63. Heading F1B. In a compression ignition engine with a main fuel supply from an injector 61, a subsidiary supply of atomized fuel is provided by an ultrasonic vibrator 29 situated in the air intake passage. Fuel is supplied continuously or intermittently by an injection pump 35, Fig. 1, constructed for example as described in Specification 827, 678, to the pointed head 31 of the ultrasonic device 29, vibrated by an ultrasonic generator 34. The fuel may be injected in time with the opening of the inlet valves 19. The head of the vibrator 29 may be disc-shaped instead of conical. In a modified compression ignition engine see Fig. 2, combustible mixture formed by the ultrasonic device is fed to two cylinders only of a fourcylinder engine.