baber/WOPTO huggingface dataset:
Patent GB-796229-A (GB)
Title: Sheet-like articles having internal passageway systems therein
IPC: F28F3/12
Filed: 1955-10-17
Abstract: 796,229. Making heat-exchangers. OLIN MATHIESON CHEMICAL CORPORATION. Oct. 17, 1955 [Oct. 22, 1954], No. 29517/55. Class 83 (2). [Also in Group XIII] Hollow sheet-like articles such as heat exchangers 1 having an internal passage 2 are made by applying to one sheet a pattern of stop-weld material corresponding to the. pattern of the final passages, applying a second sheet to the first, elongating and welding together the sheets by hot-rolling, inflating the passage, cleaning them out and then drying them. The passage is connected to the periphery of the sheet by a single extension 5 and an inlet pipe 7 which is narrower than the passage passes to the inlet 3 thereof through the extension 5 and a restriction 6, the outlet 4 of the passage being connected through extension 5 to outlet pipe 9 concentric with pipe 7. In a modified form, constriction 6 is omitted, the pipe 7 being of the same diameter as the passage, but the extension 5 is of greater diameter than the passage. After hot-rolling, the nozzle of Fig. 7 is inserted in extension 5 with the broad part 24 blocking it and the narrow part 23 extending right into inlet 3. Pressure fluid is then admitted through bore 30 to inflate the passage and then the nozzle is withdrawn so that part 24 is clear of extension 5. Cleaning and drying fluids are then passed through the nozzle and the passage 7. Specification 759,804 is referred to.
Patent GB-706412-A (GB)
Title: Ethylene interpolymer
Inventor: BUCKLEY GERARD DUNSTAN
IPC: C08F26/12
Filed: 1950-12-04
Abstract: The invention comprises flexible and transparent solid copolymers of ethylene and a minor proportion, preferably 5 to 30 per cent. of N-vinyl carbazole.  They may be made under superatmospheric pressure, at a temperature between 60 DEG  and 300 DEG C., if desired in the presence of a catalyst.  Specified catalysts are oxygen, benzoyl peroxide, tert. butyl peroxide, persulphates, azobisisobutyronitrile and azodicyclohexanecarbonitrile.  The pressure is generally from 500 to 2,000 or more atmospheres.  The reaction may be effected continuously and in solution in an organic solvent such as benzene, or in water.  The copolymer may be obtained as a solution in hot benzene or may be dissolved in toluene at 100 DEG C. and is precipitated by methanol.  The products are useful as films and in sheathing cables and as interlayers in safety glass. Specifications 583,804 and 592,487 are referred to.
Patent GB-877820-A (GB)
Title: Polymers
IPC: C08G2/00
Filed: 1958-09-17
Abstract: Polyoxymethylene is obtained by polymerizing trioxane in the presence of boron fluoride or a co-ordination complex of boron fluoride with water or with an organic compound containing oxygen or sulphur.  In examples molten trioxane is polymerized by passing in gaseous boron trifluoride, by adding boron fluoride etherate, boron trifluoride phenol complex, and boron trifluoride acetic acid complex, and by adding boron trifluoride etherate dissolved in benzene; trioxane dissolved in benzene and in ethylene dichloride is polymerized by adding boron trifluoride dihydrate; molten trioxane suspended in decane is polymerized by adding boron trifluoride etherate; trioxane vapour is polymerized with boron fluoride vapour in a vessel havng cooled walls on which the polyoxymethylene collects and is removed by scraping; and molten trioxane and boron trifluoride etherate are continuously fed into a vessel, the mixture in the vessel being continuously withdrawn on to a moving belt from which polymer is removed by a scraper blade.  The crude polymer may be treated with a catalyst neutralizing agent, such as an amine; in an example tributylamine is used.  The polymer may have a heat stabilizer incoporated therein; in examples diphenylamine, and N, N, N1, N1-tetrakis (2-hydroxypropyl)-1,2-ethylene diamine, are used.
Patent GB-902790-A (GB)
Title: Polymerization of aldehyde by organometallic compounds
IPC: C08G2/00
Filed: 1960-08-30
Abstract: High molecular weight polymers of aldehydes are prepared by polymerizing an aldehyde of formula R-CHO where R is an aliphatic or aromatic, substituted or not, hydrocarbon radical using as catalyst, an organometallic compound of formula MeRR1x-1 wherein Me is a metal of valency X, R is hydrogen or hydrocarbon, and R1 is hydrogen, hydrocarbon, alkoxide, hydroxyl, secondary amine, halogen or oxygen. Acetaldehyde, propionaldehyde, and trichloroacetaldehyde are specified aldehydes and diethyl zinc, triethyl aluminium, tributyl boron, n-butyl lithium, ethyl magnesium bromide, diethyl cadmium, and lithium aluminium hydride are specified catalysts. Solvents such as n-hexane, toluene, and diethyl ether may be used. The polymerization may take place in the apparatus shown in the drawing, in which acetaldehyde is placed in A and diethyl zinc in n-hexane in B.  A and B are immersed in dry ice/alcohol to -70 DEG C. and then evacuated; stop-cocks 2, 3 and 4 are closed and A removed from the bath so volatilizing the acetaldehyde which condensed in B via capillary 5 and reacted therein at -70 DEG C.  Specifications 719,877 and 766,629 are referred to.
Patent GB-1397609-A (GB)
Title: Apparatus for use in monitoring respiration and heart activity of a patient
IPC: A61B5/08
Filed: 1972-06-26
Abstract: 1397609 Electromedical apparatus SIEMENS AG 26 June 1972 [25 June 1971] 29900/72 Heading G1N Respiration and heart activity of a patient are monitored by supplying to a rheography electrode 1, via a capacitor 4, a sine-wave signal in the kHz range, e.g. 60 kHz, respiration sensing apparatus 7-10 being connected to the electrode 1 via a capacitor 6, and heart signal sensing apparatus 16 being connected to the electrode 1 via an in-phase suppressor (common mode rejection device) 15  and a low pass filter 13 and to an ECG electrode 2 via a low pass filter 14 and the suppressor 15. A reference electrode 3 is also provided. The capacitors 4, 6 both have capacitances in the pF range, e.g. 22 pF. As shown, the apparatus 7-10 includes a highfrequency amplifier 7, a rectifier 8, a demodulation low pass filter 9 and an indicator 10. The suppressor 15 is a differential amplifier.
Patent GB-267193-A (GB)
Title: Improvements in pianofortes
IPC: G10C3/02
Filed: 1926-09-27
Abstract: 267,193. Collen, R. H., and Broadwood & Sons, Ltd., J. Sept. 27, 1926. Pianofortes, cases for. - A pianoforte case made without the bottom board is slid onto the playing mechanism to which the bottom board has been previously attached as described in Specification 267,195. To the end walls 1 are secured the cheeks 2, in one with the arches, and the toes 3, with legs 4 interposed. Rails 5, 6 resting on end posts 7 connect the end walls 1, and receive the bottom door. Under the usual divided top is a strengthening sub-top 10, or end blocks connected by a stretcher. The cheeks 2 are connected by a rail 12. Strips 14 position the removable back-hollow which carries the hinged fall. The top door butts against the end walls. The mechanism unit onto which the case is slid contacts with thickenings 18 on the end walls as described in Specification 267,195.
Patent GB-1407518-A (GB)
Title: Camera tubes
IPC: H01J29/89
Filed: 1973-06-23
Abstract: 1407518 Cameratubes ENGLISH ELECTRIC VALVE CO Ltd 28 Feb 1974 [23 June 1973] 29933/73 Heading HID A vidicon camera tube, especially for colour television, has within its envelope 1 a lightemitting filament 10 arranged so that light is conducted through the envelope to illuminate the front of the photoconductive target 8 to cause a small quiescent current flow reducing build-up lag effects, the illumination being made more uniform by the provision of light-absorbing black cellulose 12 framing the window area. Similar light-absorbing material 13 can be provided in the region surrounding the filament. The filament 10 can be similar to the conventional cathode filament 7 and can be connected in parallel therewith.
Patent GB-1092532-A (GB)
Title: Multi-stage ultrasonic probe
Inventor: STEARN JOHN RICHARDSON
IPC: G01F23/296
Filed: 1964-07-31
Abstract: 1,092,532. Ultrasonic liquid-level sensing; ultrasonic probes. BRITISH PETROLEUM CO. Ltd. July 23, 1965 [July 31, 1964], No. 30280/64. Headings H4D and H4J. A multi-stage probe for liquid-level sensing comprises a solid body (e.g. of aluminium or aluminium alloy) having (a) a head portion 20 including a piezoelectric transducer 23, (b) an integral frusto-conical member 21 comprising a first-stage portion between head portion 20 and a semicircular cut-out 24, and a second stage portion between cut-out 24 and a diametrically opposed semicircular cut-out 28, (c) a first ultrasonic wave reflector-plate 26 between cut-out 24 and a further cut-out 25, and (d) a second reflector plate 33 defined by cut-out 28 and the lower end of member 21. In a second embodiment (Fig. 1) the first-stage and second-stage portions are defined by two frusto-conical sections (2, 3) of a solid body and the reflector plates comprise a non-integral annulus (7) and a non-integral disc (10) spaced from the lower ends of sections (2) and (3) respectively by spacers (9). In a liquid-level control system which is a development of that described in Specification 1,092,531, transducer 23 acts as both transmitter and receiver for pulses of 5 Mc/s. waves with a pulse repetition frequency of 200 c/s. For liquid levels below reflector plate 33, strong echoes are received at transducer 23 only from the lower faces 30, 31 of the first-stage and second-stage portions. As the liquid level rises to successively fill cutouts 28, 25, 24, so echoes are received from the upper surfaces 29, 27 of the reflector plates 33; 26 respectively, the thickness of the reflector plates being an odd number of quarter-wavelengths to give strong reflections. To ensure that echoes are received from surfaces 30, 27, 31, 29 in that sequence, and do not overlap in time at transducer 23, the ratio of the distance d 1  between surfaces 30, 27 to the distance d 3  between surfaces 30, 31 is made less than the ratio of the velocity of sound in the liquid to the velocity in the material of the probe, and the distances between transducer 23 and surfaces 30, 31 are made integral multiples of the length of the head portion 20. Echoes from reflector plates 26, 33 are detected by gating circuits (45, 46) (Fig. 4) in a development of the control and monitoring system of Specification 1,092,531. The signal from reflector plate 33 may be employed to partially shut off a liquid feed, and the signal from reflector plate 26 may cause complete shut-off of the feed. The control system may be adapted for use with four probes, selectively switched into circuit, each probe being associated with a different liquid flow.
Patent GB-743161-A (GB)
Title: Means for controlling an engine-driven gas compressor
Inventor: BOYCE GUY BARON
IPC: F04B49/02
Filed: 1953-11-04
Abstract: 743,161. Rotary pumps. HYDROVANE COMPRESSOR CO., Ltd. Oct. 19, 1954 [Nov. 4, 1953], No. 30447/53. Class 110(2) Means for controlling a compressor 7 of the outwardly-sliding radial vane type which is driven by an internal combustion engine 6 and has the sealing of its vanes effected by oil supplied under pressure from a separator 8 receiving oil-laden air from the compressor includes a spring- loaded throttle 17 adapted to control the flow of oil from the separator to an oil accumulating chamber 18 and an engine controlling mechanism 21 responsive to the pressure of the oil received from the said chamber. The throttle 17 is provided with a groove 24 whereby oil can seep from the chamber 18 to a groove 23 communicating with the compressor. The mechanism 21, (see Fig. 3 not shown), varies the setting of a governor 26 which controls the supply of air or liquid fuel to the engine. The chamber 18 communicates with the space 37 between a fixed bush 38 and the head of a member 39. The member 39 is spring-loaded in opposition to the oil pressure and accommodates the stem of an air inlet control valve 11 for the compressor. The left hand side of the throttle 17 may communicate with atmosphere through a passage 43 and a ball controlled part 44 as shown. The members 7, 8, 15 are all contained in a common casing. The bellows of the mechanism 21 may be fed with compressed air instead of oil through the passage 19 and the conduit 20. The mechanism 41 shown in Fig. 4 may be disposed between the members 15 and 21; said mechanism 47 comprising a spring-loaded piston 49 which is responsive to the oil supplied from the pipe 20 through a restricted orifice in a spring-loaded valve 53 and controls the supply of compressed air from a conduit 52 to a conduit 48 communicating with the bellows 30. A compensating device (Fig 5 not shown) may be disposed between the lever 32 of the member 21 and the control device of the engine whereby the governor can be dispensed with; said compensating device comprising a spring-loaded plunger 56 and a diaphragm 55 responsive to the air intake pressure of the compressor on the down-stream side of the valve 11. Specification 709,813 [Group XXIX] is referred to.
Patent GB-1080039-A (GB)
Title: Air supply control apparatus
IPC: F24F13/14
Filed: 1966-07-07
Abstract: 1,080,039. Air filter with by-pass valve. GENERAL MOTORS CORPORATION. July 7, 1966 [Aug. 5, 1965], No. 30468/66. Heading BIT. [Also in Division F2] A by-pass valve (18), which opens to deliver air directly to a turbine engine (10) when air filter (14, 16) normally supplying air to the engine clogs (Fig. 1, not shown), comprises a housing (20) having respective inlet and outlet closure members 30, 60 and a lower inlet 102, members 30 being pivoted about central shafts 36, members 60 pivoting about lower shafts 62 and members 30, 60 being connected to a spring bias means (90--96) (Fig. 2, not shown), whereby, when the differential pressure across members 60 is sufficient to overcome the bias, members 30, 60 open together to pass air from left to right (Fig. 4, not shown). The air filter comprises medium (16), in one side of a casing (12) to which the valve (18) is attached. Members 30, 60 are constructed like overlapping slats of a Venetian blind and are connected to respective vertical rods 52, 74 for simultaneous movement. Link 84 connects one member of each set, and a tension spring (96) attached to one member 60 biases both sets of members to the closed position. Inlet 102 serves to apply ambient air pressure to the left hand side of members 60, the engine's suction acting on their right side.
Patent GB-505201-A (GB)
Title: Improvements in or connected with wing construction of aircraft
IPC: B64D27/04
Filed: 1937-11-06
Abstract: 505,201. Aircraft structures. VICKERS (AVIATION), Ltd., and WALLIS, B. N. Nov. 6, 1937, No. 30482. [Class 4] An aircraft wing comprises a hollow cylindroid engine nacelle c of streamline form which is detachable from inboard and outboard wing portions a, b which are shaped to correspond with the nacelle. In the construction shown a stressed-skin nacelle c is threaded on the projecting ends of the upper and lower booms of the stub-wing spar e, to which the booms of the outer wing portion b are attached by serrated fish plates g bolted together on opposite sides of the booms. The nacelle is bolted to geodetic members on the wing portions.
Patent GB-1502745-A (GB)
Title: Electrophotographic developer compositions
IPC: G03G9/10
Filed: 1976-07-22
Abstract: 1502745 Electro-photographic developers INTERNATIONAL BUSINESS MACHINES CORP 22 July 1976 [15 Aug 1975] 30555/76 Heading G2C Toner particles containing up to 10 wt. per cent (based on the toner) of fibres of fine powder type polytetrafluoroethylene is used to develop electrostatic latent images. The toner particles may be of resin, e.g. polystyrene, polymethylstyrene, polybutylmethacrylate, polyvinylbutyral, epoxy resins, rosin and rosin esters, mixed with carbon black or nigrosine dye. In the Example, pigmented styrenen-butyl methacrylate copolymer toner and "Teflon K Type 10" (Registered Trade Mark) are placed in a blender which is turned on for 5 secs, off for 10 secs and the operation repeated 20 times to produce the developer.
Patent GB-1146541-A (GB)
Title: Apparatus for the supporting conveying and guiding of web- or sheetlike materials
IPC: B65H5/22
Filed: 1966-07-07
Abstract: 1,146,541. Feeding sheets and webs. SVENSKA FL KTFABRIKEN A.B. 7 July, 1966 [8 July, 1965], No. 30586/66. Heading B6B. [Also in Division B8] Apparatus for supporting and feeding a web or sheet on a cushion of gas comprises a guide plane 1 with openings 2 and 3 for supply and discharge respectively of the gas. The supply openings 2 are located in two parallel lines with the discharge openings 3, located between the lines. The supply openings 2 are formed by depressions in the guide plane 1 (Fig. 7) and are so shaped that the gas flows out through them in a direction substantially parallel to the guide plane, and forms an angle of between 0 and 60 degrees (preferably 8 to 30 degrees) with the parallel lines. More than one set of supply and discharge openings may be formed in a wide guide plane (Fig. 3). A wall or edge guide (4, Fig. 5) perpendicular to the guide plane 1 may be provided on the outside of one of the lines of supply openings 2, which openings direct the gas parallel to the guide.
Patent GB-276543-A (GB)
Title: Novel bituminous emulsions and processes for preparing them
IPC: C08L95/00
Filed: 1926-12-03
Abstract: 276,543. Potts, H. E., (Mineral Akt.-Ges. Brig.). Dec. 3, 1926. Emulsions, making. - Aqueous emulsions of bituminous materials such as tar, asphalt or petroleum asphalt are prepared by adding the bituminous material, preferably in a molten condition, to an emulsion in sodium or potassium carbonate solution of a neutral glyceride such as bone fat fish oil, lard, butter, animal fat, wool fat or parm oil. 1-2 per cent of caustic alkali may be added to neutralize free fatty acid in the glyceride. The final emulsion may be diluted with a 1-5 per cent solution of alkali carbonate. The bitumen may be treated with 1-5 per cent of volatile hydrocarbons, e.g. petroleum, benzine, chlorinated hydrocarbons: these are stated to increase the thickness of the dried product. The emulsions may be used in the making of roads, bituminous cements, and paints.
Patent GB-1206583-A (GB)
Title: Apparatus for handling articles
Inventor: FREEMANTLE ARTHUR JOHN
IPC: B65B15/00
Filed: 1966-07-07
Abstract: 1,206,583. Attaching articles to display cards. A. J. FREEMANTLE. 4 Oct., 1967 [7 July, 1966], No. 30616/66. Heading B8C. In mounting articles on to a display card, a card is positioned at an article mounting station, individual articles are fed from a supply station to and are collated at a transfer station into a group, the collated group of articles is transferred from the transfer station and into contact with the card, the articles are secured to the card and at least the region of the card having the articles secured to it is moved away from said mounting station. In the apparatus shown a display card is taken from a stack 19 by vacuum lifting arms 46 and deposited on stationary table 44 from whence it is pushed by pusher mechanism 42 on to an inclined table 32. Table 32 is mounted in suitable guides and can be moved in steps by cam mechanism 36 from the full line position to the dotted line position shown. Separate articles are fed via shoots 14 to hoppers 12 from which the bottom article may be pushed by reciprocating pushers 20 on to a reciprocable collator plate 28. The pushers 20 are each capable of two lengths of stroke by suitable cam mechanism 126, 128 so that articles may be pushed to different positions on the collator 28. There are also co operating fingers 88 (Figs. 2 and 3, not shown) associated with the collator 28 to aid in positioning articles thereon. When the articles have been positioned on the collator 28, they are held thereon by suitable grippers and the collator is pushed forward by pusher mechanism 30 and is guided in guides 24, 26 so that a projecting part of each article is brought into contact with the display card on table 32. Means such as a heating bar 66 is then operated by cam mechanism 72 to secure the articles to the card. In the particular embodiment described the bar 66 is used to activate a heat-activated adhesive previously applied to the card. Stapling or other means may however be applied for securing the articles to the card. When one row of articles has been attached to the card, table 32 is moved forward by a step on cam 36 and another row of articles is applied and so on until the card is full. A radial land 40 on cam 36 then allows a quick return movement of table 32 by spring 38 and the card with the articles thereon drops on to shoot 78 by which it is conveyed to an outlet. The various mechanisms are driven in synchronism with each other from a single motor 82. In a further embodiment articles are attached to a continuous web which is subsequently cut into lengths.
Patent GB-1147303-A (GB)
Title: Controller for pneumatically-operated balancing hoists
IPC: B66D1/08
Filed: 1967-07-04
Abstract: 1,147,303. Load balancing hoists. BIRFIELD ENG. Ltd. 4 July, 1967 [11 July, 1966], No. 30641/67. Heading B8B. [Also in Division G3] A pneumatically operated balancing hoist in which compressed air is supplied to a chamber at one side of a piston controlling axial movement of the hoist drum mounted on a ball nut and screw arrangement, is provided with an air supply controller including main and pilot air regulators 74, 78 and a piston or flexible diaphragm 148 therebetween, the diaphragm controlling main air supply to and from the hoist. Compressed air is supplied to the controller at 68 through a filter 72 and passes into a pilot passage 92 and a main passage 118. Pilot air then passes through the regulator 78, a trim valve 80, a diaphragm chamber 114, an auxiliary trim valve 82 and a vent line 22 to a manually operated control valve 24. Main air from the passage 118 passes through the main air regulator 74, a diaphragm chamber 124, past an air operated check valve 76 and through an inlet passage 77 leading to the hoist drum chamber. The control valve 24 can be manually set to a first position in which no pilot air is bled therefrom, whereupon full pilot air pressure and hence full main air pressure is applied to the hoist causing it to raise a heavy load, a second position in which a little air is bled off whereupon medium loads are lifted by the hoist, and a third position in which the air bleed is such that the hoist load is just balanced. In the latter case, a manual raising of the load reduces the main air pressure in the hoist drum chamber and below the diaphragm 148, whereupon the latter is depressed by the pilot air pressure causing a valve body 128 to be resiliently depressed to permit inflow of compressed air to the hoist drum chamber to balance the load in its elevated position. A manual lowering of the load causes an increased pressure in the hoist drum chamber and under the diaphragm 148, causing the latter to be lifted to raise a ball or cone headed link 154 from a vent passage 158 in the valve body 128, whereupon excess pressure is vented to atmosphere and the load is balanced in its lowered position. The pilot air regulator 78 comprises a screw adjuster 110 which through spring 108, flexible diaphragm 104 and stem 96 adjusts valve 98 controlling the pilot air flow. The stem 96 registers with a passage 106 in the diaphragm 104, through which excess air pressure is released to atmosphere if the adjuster is screwed down excessively. The check valve 76 comprises a spring biased plunger 162 which shuts off the passage 77 unless compressed air is supplied to the connector whereupon the main air is in communication with a chamber 170 in which a piston 168 coupled to the plunger 162 is adapted to move to open the passage 77.