baber/WOPTO huggingface dataset:
Patent GB-742496-A (GB)
Title: Improvements in or relating to purification of acetone by distillation
Filed: 1953-05-20
Abstract: <PICT:0742496/III/1> Crude acetone containing a minor proportion of mesityl oxide and aldehydes is purified by intimately mixing it with 1/2 to 10 times its volume of an aqueous caustic alkali solution containing 20-50 per cent by weight of caustic alkali for 15 minutes to 3 hours at about 15 DEG -33 DEG C., feeding the treated acetone to a distillation column fed at a higher point with water in an amount of 2 to 8 times the volume of acetone, removing an overhead fraction containing water and substantially all the carbonyl impurities, and removing a bottoms fraction comprising water and acetone substantially free from carbonyl impurities.  In an example the crude acetone contained 86.8 per cent acetone, 2.3 per cent water, 0.5 per cent mesityl oxide and aldehyde impurities and 10.3 per cent isopropanol.  The crude acetone is intimately mixed in a tank 3 with aqueous caustic soda solution.  After 15 minutes-3 hours the mixture is allowed to settle and the lower aqueous caustic phase is recycled via line 4 while the upper organic phase, preheated if desired, is fed to a fractional distillation column 6.  Water is fed to a higher point of the column via line 12, external reflux being provided via condenser 15.  The bottoms from column 6 comprising acetone, isopropanol and water is fed to a second fractionating column 13 provided with external reflux via condenser 18.  Isopropanol and water are recovered from the bottom of column 13 and chemically pure acetone is recovered from the top.
Patent GB-142182-A (GB)
Abstract: 142,182. Bucher, W. W. Jan. 28, 1919. Turning-gear.-An ignition and load-control system for an internal-combustion engine 2 comprises a magneto 3 or other source of igniting current, a dynamo 1 connected to the engine, automatic means such as a coil 10 in series with the mains adapted to make the ignition current available for the engine at minimum load and to discontinue the ignition current at no load, and means for automatically placing a heavy load coil 19 in parallel to the coil 10 when an increased current is supplied to the mains. Under no-load conditions, an armature 11 engages a contact 16 and short-circuits the primary circuit of the magneto 3. When minimum load, such as a single lamp 8, is thrown into circuit, a current from a battery 21 flows through the coil 10, which attracts the armature 11 into the position shown in Fig. 2 and removes the short-circuit from the magneto. At the same time, the engine is set in motion by a starter 23. When the engine comes up to speed, a governor 22 operates a switch 24 and transfers the service mains 7 from the battery and starter to the dynamo 1.
Patent GB-218989-A (GB)
Title: Process of refining mineral oils and mineral oil products
IPC: C10G45/06
Filed: 1924-06-12
Abstract: Mineral oils are refined by treatment with hydrogen in presence of fuller's. earth, infusorial earth, or other inert adsorbent carrier upon which has been deposited nickel alone or mixed with cobalt, iron, or copper.  In an example hydrogen is passed for three hours through a mixture of gas oil and 3 per cent of nickel-kieselghur kept at 150 DEG  C.  In another, black cylinder-oil is agitated at 300 DEG C. with nickel-kieselguhr in hydrogen at 10 atmospheres.
Patent GB-1420867-A (GB)
Title: Process for coating plastics articles
IPC: B29C33/58
Filed: 1973-03-23
Abstract: 1420867 Coating plastics articles MESSERSCHMITT-BOLKOW-BLOHM GmbH 23 March 1973 [15 April 1972] 14247/73 Heading B5A To coat the surface 1 of an unhardened fibre reinforced plastics article 2, a mould 3 is coated first with a layer 4 of parting agent, and then with a layer 5 of powdered coating material which is melted by heating, the article 2 then being placed on the layer 5 and caused to harden in contact with it. The coating material may be a pigmented lacquer or a mixture of metal particles and binder, and is preferably applied by electrostatic spraying, if the mould is metal, or by a conventional spraying process if the mould is plastics. In the latter case the mould will be heated to melt the powder to ensure adherence of the powder layer.
Patent GB-528778-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/10
Filed: 1939-05-15
Abstract: 528,778. Vacuum cleaner dust collectors. LEE, A. H. May 15, 1939, No. 14434. [Class 8 (ii)] Dusty air from the exhaust fan of a vacuum cleaner is delivered by a pipe E into a metal container A which is detachably mounted on the handle of the cleaner and has a removable lid D of gauze or fabric ; the pipe E discharges into the container at the top.
Patent GB-763224-A (GB)
Title: Improvements in heat exchangers of the rotary regenerator type
IPC: F28D19/04
Filed: 1954-05-17
Abstract: 763,224. Regenerative heat-exchangers. CARRIER ENGINEERING CO., Ltd. May 17, 1954 [June 12, 1953], No. 14449/54. Class 64(1) A rotary regenerative heat exchanger comprises an annular housing 5. divided into a plurality of chambers, a heat transfer matrix consisting of two substantially frustoconical elements 12, 14 located one within the other extending in opposite directions about the axis of the housing and having a portion of each of said elements disposed in each chamber, high pressure and low pressure heat exchanging fluids being passed alternately through each chamber. The invention is applicable to regenerators in which the matrix is rotatable across stationary ducts for the heat exchanging fluids and to regenerators in which the ducts are movable across end faces' of a stationary matrix. Figs. 4 and 5 show apparatus having a rotary matrix in which each of the said chambers comprises an open ended box 6 extending between end plates 15 in the manner described in Specification 763,223. One of the end plates is provided on its periphery with teeth meshing with an pinion 34 rotated by a motor 35 but a shaft drive may alternatively be provided. On at least the high pressure side of the regenerator, stationary sealing plates 22, 26 are positioned adjacent to the end plates 15 of the rotor and are connected to the stationary casing 4 containing the rotor through. bellows 25, 29 which permit the sealing plates to move with respect to the housing 5 and the rotor casing 4. The sealing plates are apertured as shown in Figs. 5 and 6 to define through passages which communicate with the high and low pressure fluid entry and discharge ducts 23, 24, 27 and 28 secured to the casing 4. The sealing plates may embrace both the high and low pressure fluid passages (Fig. 6) or the high pressure fluid passages only (Fig. 5). To compensate for varying pressures on the sealing plate as the boxes 6 pass from one fluid stream to the other whilst the rotor is turning, holes 50 (Fig. 5) are provided in that part of the sealing plates subjected to such varying pressure. These holes each communicate with a bellows member 44 (Fig. 9) which acts to equalize the pressure on both sides of the sealing plate in the vicinity of the holes 50 and thus the relationship between the sealing plate and the adjacent rotor end plate remains unaffected by the varying pressures in the rotor. Temperature equalizing plates e.g. of copper, may be provided between the ends of the boxes 6 and the rotor end plates 15 and guide vanes may be provided in the boxes 6 (Fig. 7 not shown). The heat exchanging fluids may flow through the rotor either in the same' direction or in opposite directions:
Patent GB-363277-A (GB)
Title: Improvements in window constructions
IPC: B63B19/00
Filed: 1931-05-15
Abstract: 363,277. Windows. KAWNEER CO., 1105, South Front Street, Niles, Michigan, U.S.A. May 15, 1931, No. 14482. Convention date, July 14, 1930. [Class 20 (iii).] A window construction, particularly for ships, and comprising a vertically-sliding sash and a guard or shutter therefor, has means whereby the sash may be moved alone or the sash and shutter moved as a unit. According to one construction, the window frame comprises angle-members 1 .. 4 Figs. 1 and 2, which are adapted to be secured to the hull of a ship. The sash 6 is disposed, when raised, within guide rails 7, 8, 9 and is lowered into a well 42. The guide rails are formed by-a sheet of material bent to form a channel 10 with a flange 11, the channels having inturned portions 12 which serve to retain strips 13 of felt or the like. The window is operated by a handle 35, connected by spiral gearing 34, 33 to a screw or worm 28 which carries a nut or collar 24. On either side of the collar and bearing against a flange 25 thereon rest the two arms 23 of a bracket 22 on which is mounted a channel 21 which receives the lower edge of the sash 6. Slidably disposed within channels 18, secured by bolts 20 to the window frame, is a metal plate or shutter 16. The lower end of the shutter has cut-away parts 36 and to the intermediate portion 37 is connected a bracket 38 carrying hinged arms 39. These arms may be moved to rest upon lugs 40 of the nut 24 whereby the shutter and sash are raised simultaneously when the handle 35 is operated. A door 45 is provided in the housing of the well 42 to permit of access to the arms 39. A horizontally-hinged strip 43, the free end of which is adapted to engage either with the shutter or the sash, is provided within the window opening to prevent the entrance of foreign matter into the well.
Patent GB-1042903-A (GB)
Title: Improvements in or relating to the treatment of insects
IPC: C07F9/564
Filed: 1964-04-08
Abstract: Compounds of the formula <FORM:1042903/C2/1> wherein R is a methyl, ethyl, benzyl or nitrobenzyl group are prepared by (a) pyrolysing a bis(ethyleneimido)phosphoryl carbamate to form the corresponding isocyanate and then reacting the latter with an alcohol, (b) by reacting bis(ethyleneimido)phosphoryl chloride with KCNO to form the corresponding isocyanate and then reacting with an alcohol or (c) by reacting PCl5 with a carbamate in an inert solvent to form dichlorophosphoryl isocyanate and reacting the latter with an alcohol to form the dichlorophosphoryl carbamyl compound which is then reacted with ethyleneimine or a metal salt thereof.  The benzyl, p-nitro benzyl and m-nitrobenzyl [bis(ethyleneimido)phosphoryl] carbamates can also be obtained by boiling ethyl [bis(ethyleneimido)phosphoryl] carbamate with benzyl alcohol, p-nitrobenzyl alcohol and m-nitrobenzyl alcohol respectively in toluene.  Reference has been directed by the Comptroller to Specification 911,764.ALSO:A composition for rendering insects substantially incapable of reproduction comprises a compound of the formula:  <FORM:1042903/A5-A6/1> wherein R is a methyl, ethyl, benzyl or nitrobenzyl group and a non-sterilizing carrier.  The carrier may be an insect dusting powder, an insect food or a polyoxyethylene ether.  The composition may be applied orally or topically to the insect. Refer-  Reference has been directed by the Comptroller to Specification 911,764.
Patent GB-743220-A (GB)
Title: Process for the manufacture of dyestuffs of the anthraquinone series suitable for dyeing cellulose acetate artificial silk
IPC: C09B1/20
Filed: 1953-05-22
Abstract: Dyestuff mixtures are made by reacting an aliphatic amine and ammonia simultaneously with 1.4-dihydroxyanthraquinone in presence of a leuco compound of an anthraquinone containing a hydroxyl, an amino, or an alkylamino group in each of the 1- and 4-positions and, if desired, oxidizing the leuco body in the resulting reaction mixture.  The leuco-compound may be formed in the reaction mixture from the 1.4-dihydroxy-anthraquinone by addition of a reducing agent.  The reactions may be conducted in an aqueous medium in presence of a water-soluble organic solvent. In examples (1) a mixture of 1.4-dihydroxyanthraquinone and its leuco-body is heated with methanol, isobutyl alcohol or xylene, aqueous or alcoholic ammonia, and one of the following: b -oxyethylamine, g -oxypropylamine, b g -dioxypropylamine, isopropylamine, methylamine, ethylamine, n-propylamine, n - butylamine, secondary butylamine; followed by oxidation with sodium 3-nitrobenzene-1-sulphonate, sodium chlorate, a stream of air in presence of copper acetate and piperidine, or nitrobenzene.  Also in examples (2) 1.4-dihydroxyanthraquinone and leuco -1-hydroxy or amino -4-isopropylamino or leuco -1.4-di-(b  - oxyethylamino) - anthraquinone are heated with methanol, aqueous ammonia, and isopropylamine, followed by oxidation with sodium-3-nitrobenzene-1-sulphonate; (3) 1.4-dihydroxy-anthraquinone is reacted with methanol, methylamine, aqueous ammonia, and sodium hydrosulphite or zinc dust, with or without sodium bicarbonate.  The products dye cellulose esters (e.g., acetate), nylon and superpolymethanes blue-violet shades.
Patent GB-139088-A (GB)
Title: Improvements in or appertaining to manifolding devices
IPC: B41L3/20
Filed: 1919-06-07
Abstract: 139,088. Norman, J. E. June 7, 1919. Carbon papers &c., arrangements of.-Consists of a writing-board in which duplicating-medium is combined or formed therewith to constitute a board and producing copies on the back of thin or semi-transparent paper, as also means for facilitating the handling thereof. The writing-board 2 consists of a sheet of rigid material, such as cardboard or stiff paper, provided with a soaking 3 of copying-material either incorporated therein or consisting of a sheet of carbon paper attached thereto by adhesive, or made in the form of a sleeve fitting over the board. A tab 6 is provided to facilitate handling, and a flap 7 may be added for insertion into the pocket of a pad or book, as shown in Fig. 4, where the board 2 overlaps a pile of sheets 8.
Patent GB-528829-A (GB)
Title: Improvements in adjusting slides or buckles for bands, webbing and the like
IPC: A41F11/12
Filed: 1939-05-16
Abstract: 528,829. Adjusting slides or buckles. WALKER, Ltd.,.T., and WALKER, G. T. May 16, 1939, No. 14546. [Class 43] An adjusting slide or buckle, particularly for braces, comprises a rectangular frame 1, 2, with intermediate bars 3, 4, of which the bar 3 is serrated at 3a, and a T-shaped lever 6 hinged to the member 1 of the frame and formed with a catch 8 adapted to snap into engagement with the lower member 2 of the frame. The T-portion 7 of this lever is serrated at 7a or formed plain with a gripping edge, to grip the brace band threaded through the slide when the lever is turned down into operative position. In a modification, the portion 7 may be dispensed with, and the lever 6 itself provided with teeth or other gripping means to engage the brace band.
Patent GB-906751-A (GB)
Title: Improvements in or relating to conveyor chains
IPC: F16G13/10
Filed: 1961-04-21
Abstract: 906,751. Chains. BENNDAHL, L. April 21, 1961 [April 22, 1960], No. 14575/61. Class 24. A chain, universally jointed for use in a conveyer system in which it may be required to move in a path involving both horizontal and vertical changes of direction, comprises links formed of two link plates 1, 2 with apertures 3, 4 adapted to embrace a ball 5 held by the plates of the next link. In the form shown, the ball is carried by a pin 6 secured both to the ball and to the plates of the link holding the ball. In another form (Fig. 3, not shown), the ball is secured directly, e.g. by welding, to these plates.
Patent GB-767081-A (GB)
Title: Improvements in and relating to control systems
IPC: A21C15/00
Filed: 1951-06-20
Abstract: 767,081. Automatic weight control systems. SARGROVE ELECTRONICS, Ltd., and SARGROVE, J. A. July 28, 1952 [June 20, 1951; Jan. 1, 1952], Nos. 14643/51 and 45/52. Class 38 (4). In an automatic system for controlling the weight of portions of dough issuing from a moulding machine, the portions are weighed successively, and the volume of the portions to be dispensed is corrected if during a given time the algebraic sum of the individual deviations exceeds a predetermined amount. The weight monitor is arranged, Fig. 2 (not shown), so that a mirror moving with the scale arm can deflect a light beam on to one of four barrier layer photo-cells. The outer pair of cells represent extreme limits at which the portions of dough are rejected, the inner pair of cells represent closer limits at which control of the moulding machine takes plate. Each cell is connected to its own two valve, direct coupled amplifier, Fig. 3 (not shown), controlling a relay which when energized disables the amplifier of the other limit photo-cell, and also controls the rejection device, or in the case of the inner pair, control contacts MH2, ML2, Fig. 4, of an electronic counter. In the unoperated position, these contacts connect condensers G10, G12 to stabilized positive and negative voltage sources. In the operated position, one condenser or the other is connected to an integrating network consisting of a condenser G11 and resistors R24, R25. The time constant is such that the integrated charge represents a substantial number of weighings, and its value is indicated by a valve voltmeter VV. Condenser G11 is coupled by cathode followers V12, V14 to valve V13 controlling relay H/3 and via a phaseinverting stage V15 to valve V16 controlling relay L/3. If the positive charge on condenser G11 exceeds a predetermined value, relay H/3 is energized, and a negative charge similarly controls relay L/3. If relay H/3 operates, a cor-, rection circuit is prepared over contacts CT1 L2 and H2, Fig. 5, to control relay 70 (controlling the correction motor 53, Fig. 1 (not shown), but contacts CT1 remain open until operated by the release of a timing relay CT/3. The operation of relay H/3 also changes over contacts H3 thereby discharging condenser G20 through relay Z/2 causing it to be momentarily energized. This closes contacts Z1, Fig. 4, to discharge the integrating condenser G11 ready for the next cycle, and closes contacts Z2, Fig. 5, to increase the negative bias on the grid of V20, which cuts off and releases timing relay CT/3 controlling relay 70 as above.
Patent GB-1247465-A (GB)
Title: Photoelectrophoretic colour imaging process
IPC: G03G17/04
Filed: 1970-03-26
Abstract: 1,247,465. Photo-electrophoretic imaging. XEROX CORP. March 26, 1970 [April 2, 1969], No.14648/70. Heading G2H. A photo-electrophoretic process comprises feeding a web 11 through imaging stations 1a, 1b 1c; the web receiving a differently coloured image at each station and the images being formed in register to produce a polychromatic image. At station 1a a colour separation negative 2 is wrapped around part of a rotating, earthed, transparent cylinder 3. A roller 6 applies imaging suspension 5 to cylinder 3. A lamp 4 and a lens-mirror system projects, line-by-line, an image of negative 2 into the nip of cylinder 3 and an electrically biased roller 8 to form a particle image on web 11.
Patent GB-916767-A (GB)
Title: Coupling
IPC: F16D3/74
Filed: 1961-04-24
Abstract: 916,767. Securing universal joint hubs on shafts; universal joints. DODGE MANUFACTURING CORPORATION. April 24, 1961 [June 13, 1960], No. 14757/61. Class 80 (2). The ends 66 of a universal joint rubber connecting member 24 are secured to driving and driven shafts 10, 12 by gripping them between a ring 44 and an expandable split hub 26 which has a tapered bore 30 co-operating with an externally tapered split bush 38 so that on tightening screws 76 the bush is contracted on to the shaft and the hub is expanded to grip the connecting member. As shown, the ring 44 has an inwardly directed flange 46 against which the hub abuts when expanded and a rib 50 assists the gripping action. The connecting member 24 is split to facilitate assembly and is strengthened by layers of fabric 70 or nylon cord embedded therein and the ends 66 may be enlarged by embedded cores 72. The torque capacity may be increased by additionally keying the bush 38 to the shaft and the flange 46 to the hub 26. Further screws, Fig. 6 (not shown), may be provided between the hub and bush for disassembly. In Figs. 7 and 8 (not shown), the flange 46 is replaced by a rib and the end of the connecting member extends to the outer edge of the ring. In Figs. 9 and 10 (not shown) the ring is divided into two halves which are bolted together.
Patent GB-272219-A (GB)
Title: Release mechanism for mechanical fuses
IPC: F42C9/04
Filed: 1927-06-01
Abstract: 272,219. Skoda Works, Plzen. June 4, 1926, [Convention date]. - Void [Published under Sect. 91 of the Acts]. Projectile fuzes.-A resilient or lost-motion connection is interposed between the trigger of a clockworktime fuze and the drum which releases the lever of the trigger at the appointed time, in order to render the action of the clockwork more uniform in spite of eccentric irregularities in the rotation of the drum and in spite of the friction of the trigger. As shown in Figs. 1 and 2, the trigger is a longitudinal spindle 1 having a cut-away portion 2 to release a centrifugal striker 3 when the spindle is rotated by the centrifugal force on a transverse lever 5 thereon, when this lever is released bv a slot 7 in the drum 8 of the clockwork. The lever 5, is made like a blade spring. Modifications are described, in which (1) the trigger spindle is arranged transversely and the blade-spring lever longitudinally; (2) the lever is rigid and connected by a coiled spring to the spindle; and (3) the lever is rigid and connected to the spindle with a certain amount of lost-motion, the centre of mass of the lever being so arranged in relation to its pivot that the centrifugal force on the lever is light so long as it bears on the drum, hut increases as it swings out after release, until, when the lost-motion is taken up, it is sufficient to overcome the friction of the trigger.
Patent GB-1340258-A (GB)
Title: Electrical inverters
IPC: H02M7/515
Filed: 1971-05-14
Abstract: 1340258 Inverting ALLMANNA SVENSKA ELEKTRISKAAB 14 May 1971 [15 May 1970] 14933/71 Heading H2F In an inverter comprising at least one group of controlled rectifiers T13, T23 and reverse rectifiers D12, D22, commutation is achieved by means of a pair of commutating controlled rectifiers T11, T21 and a commutating capacitor C, recharged by means of a series oscillatory circuit including an inductor having one winding L1a in series with a commutating rectifier T11 connected to one pole of the D.C. supply and another winding L1b in series with the reverse rectifier D22 connected to the other pole of the D.C. supply. As described, a three-phase inverter is supplied from a three-phase rectifier comprising diodes D31 ... D36. Assuming thyristor T13 to be conducting, when commutating thyristor T11 is turned on, an increasing current flows through T11, C and L1a, turning off T13 and allowing the load current to be taken by D12. When the capacitor C has recharged to the supply voltage, T11 turns off and D22 turns on. Energy may be recovered from an inductive load via D22 and L1b. Triggering polyphase thyristors.-The various main and commutating thyristors may be triggered from a variable frequency oscillator via a ring counter, delay circuits being included between the triggering circuits of appropriate main and commutating thyristors. The output voltage, e.g. to an asynchronous motor, may be controlled by pulse length modulation.
Patent GB-1021663-A (GB)
Title: Improvements in and relating to line-end tackle for fishing
IPC: A01K85/16
Filed: 1962-04-18
Abstract: 1,021,663. Artificial bait. G. W. FREEMAN. April 5, 1963 [April 18, 1962], No. 14969/62. Heading A1A. An artificial bait consists of a hollow thin walled flexible body 1 encasing a fish hook 6 and disguised as a fish. The body 1 is moulded in rubber, butyl, polyurethene or silicone rubber in one or two pieces with an open tail end 3a which can be sealed. The body can be filled with a scent, oil or water or inflated with air and externally painted. The hook 6 is attached to a trace which passes through a hole in the body 1 and connects with a swivel coupling 11 attached to the fishing line. A solid spherical element 8 is attached to the trace 7 adjacent the interior surface of the nose 2 of the body. A washer may be interposed between the element 8 and the nose and an additional spherical element may be fixed to the cast adjacent the hook.