baber/WOPTO huggingface dataset:
Patent GB-856331-A (GB)
Title: Process for conducting chemical reactions
IPC: B01D35/02
Filed: 1957-10-29
Abstract: In an example, a 10 % wt solution of ethyl anthraquinone in a mixture of 40 parts by volume of benzene and 60 parts by volume of diisobutyl carbinol is hydrogenated at 30 DEG C. in the presence of a suspended hydrogenation catalyst such as Raney nickel or palladium on a carrier until 50% of the quinone has been reduced to the corresponding hydroquinone: some of the liquid is then withdrawn from the reaction zone through a filter positioned therein whilst a quantity of fresh solution equal to that removed is added.  50 alternating pulsations per minute are applied by means of a filter pump to the liquid being withdrawn in such manner that 1/3 of the liquid passing out of the reaction zone through the filter is returned therethrough, thus keeping the filter clear of suspended particles.ALSO:In conducting a reaction involving a liquid containing a suspended solid wherein some of the liquid is continuously withdrawn from the reaction zone through a filter positioned therein and fresh reactant liquid is continuously added to the reaction zone, an alternating pulsating movement of liquid through the filter is established at 1-500 pulses/minute, whereby a part of the liquid thus withdrawn is periodically returned to the reaction zone through the filter, which is thereby kept clear of solid particles.  The suspended solid may be a catalyst used for hydrogenating a substituted anthraquinone in an inert solvent e.g. Raney-nickel or palladium on a carrier (see Group IV(b)).  A number of embodiments is described and illustrated: for instance in Fig. 3 liquid <PICT:0856331/III/1> from the reactor 34 is withdrawn by pump 32 through filter 33 into line 35 containing valve 36 on the suction stroke.  On the pressure stroke the liquid is expelled through line 37 containing valve 38 except when reducing valve 52 is periodically opened.  A further valve may be installed in line 37 thus controlling the quantity of liquid returned through the filter.  A stirrer 53 is preferably provided in the reactor. Preferably the particle size of the catalyst is 0.001-0.833 mm. and 20-70% of the filtered liquid is returned through the filter.
Patent GB-1484073-A (GB)
Title: Support for a bobbin
IPC: B65D71/70
Filed: 1974-07-31
Abstract: 1484073 Storing bobbins BELLAPLAST GmbH 31 July 1974 [1 Aug 1973 7 June 1974] 33784/74 Heading D1J [Also in Division B8] The invention relates to sheets of material so shaped that ends of bobbins or other cylindrical objects can be supported between said sheets, the sheets serving to absorb axial and/or radial shocks to said ends. According to the invention each sheet comprises a base and at least one projecting locating element, said element having an annular ring portion convoluted so as to be capable of axial deformation on receiving a shock from one end of the cylindrical object mounted on said locating element; and a yielding spring configuration supporting the element from the surrounding base and adapted to absorb resiliently at least axial shocks on the annular ring portion. In Fig. 1 there is shown a base plate 1, a projecting locating element 2 and an annular part 3. The annular part 3 is connected to the base 1 by an annular channel 5 and rib 6 that provide an axially resilient mounting for the bobbin tube 1 capable of yielding through a distance 8. In addition the annular part 3 is formed with a plurality of upstanding teeth 4 that can be crushed if an axial shock is too great for the resilient mounting. Fig. 2 shows a top plate 11, the plate 11 having a truncated locating element 12 to receive the upper end of the bobbin tube 1, and an annular end part comprising an annulus 13 of teeth 14, and a channel 15 and rib 16 that is capable of yielding through a distance 18. In Fig. 3 the locating peg 2 is surrounded at its base by a conical wall 23 with ribs 24. The resilient configuration 25, 26, 27 serves the same function as the parts 5, 6, 7 in Fig. 1.  Fig. 5 shows a construction similar to Fig. 3 except that the ribs 24 have been replaced by bumps or pips 29. Various other configurations are also described.
Patent GB-921375-A (GB)
Title: Improvements in apparatus for winding packages of roving and the like
IPC: D01H1/36
Filed: 1960-10-03
Abstract: 921,375. Building roving packages with curved ends. INSTITUTE OF TEXTILE TECHNOLOGY. Oct. 3, 1960 [Nov. 3, 1959], No. 33851/60. Classes 120 (2) and 120 (3). In the usual form of builder mechanism for producing roving packages with conical ends (see Fig. 2), the builder shaft 20 and its oppositely directed threaded portions 21a, 21b which turn, at each reversal of roving lay, to move camming surfaces 16, 17 closer together to reduce the length of traverse, are replaced by a member 53 (shown in Figs. 3 and 4) having similar threads but with a non-uniform pitch so that packages having curved end profiles are produced. The internally threaded followers 14 and 15 shown in Fig. 2 are replaced by following pins 65, 66 each mounted in a unit which comprises a camming surface 57 or 58, a bridging portion 62 or 64 and a guiding portion 61 or 63. The guiding portions 61 and 63 slide in a groove 60 cut in a base plate 48 which also carries bearing blocks 46, 47 in which runs the shaft 45 of the builder member 53. The pins 65, 66 are urged into engagement with their respective threaded portions 55, 56 by leaf springs 68, 70. The threaded portions may be such that the end profile of the resulting package is a portion of a circle, ellipse, parabola, cycloid, involute or sine wave. It is also possible to provide a uniformly threaded section at the end of each threaded portion so that the resulting package and profile is partly curved and partly conical. Details are given of the way in which the threaded portions 55, 56 are cut if a sine wave profile is required.
Patent GB-1393934-A (GB)
Title: Diamond particle particularly for use in heat sinks
Inventor: CUSTERS JOSEPH LAMBERT MARIA
IPC: H01L47/02
Filed: 1972-07-20
Abstract: 1393934 Gems DE BEERS INDUSTRIAL DIAMOND DIVISION Ltd 20 July 1972 [30 July 1971 24 Aug 1971 19 Nov 1971] 33973/ 72 Heading A3H [Also in Divisions Cl and H1] A spheroidal, i.e. shaped as close to the spherical as possible, diamond particle is truncated by a planar surface. Preferably the diamond is truncated by a pair of parallel planar surfaces. The particles may be produced using conventional techniques e.g. rounding in a fluid energy mill until the desired spheroidal particles are obtained, mounting a mono-layer of such particles in a bronze matrix, utilising a polishing scarfe to grind on the desired planar surface and then removing the matrix to obtain the particles. A second planar surface (Fig. 2 not shown) may be ground on the particles by a similar method if so desired. The particles which may be Type IIa diamonds of a size of 0.25 to 2.5 mms can be utilised as heat sinks. The planar surfaces may be polished after grinding e.g. by heating at 500 to 800C with potassium nitrate for about 2 hours. This improves their thermal conductivity and smooths out any surface imperfections.
Patent GB-505858-A (GB)
Title: Improvements in or relating to the manufacture of photoelectric cells
IPC: H01J40/06
Filed: 1937-12-08
Abstract: 505,858. Photo electric cells. ZEISS IKON AKT.-GES. Dec. 8, 1937, No. 34014. Convention date, Feb. 26. [Class 39 (i)] In the manufacture of photo-electric cells, a definite quantity of alkali metal such as caesium is vaporized on to a layer of silver or copper, and is converted into caesium oxide, Cs2O by the requisite amount of oxygen, after which the alkali metal is vaporized on to the oxide layer until the maximum sensitivity of the cell has been attained.
Patent GB-190713-A (GB)
Title: Improvements relating to the manufacture of articles of a tufty nature such as brushes, carpets, and the like
IPC: A46D3/00
Filed: 1922-12-13
Abstract: 190,713. Hultqvist, J. A. Dec. 23, 1921, [Convention date]. Pile fabrics.-In the manufacture of carpets and like articles of a tufty nature, fibrous material is introduced into a pasty binding material which is fed in a layer on to a table, the fibrous material being subsequently cut to the desired length. The fibrous material 4 disposed within a reservoir 1 is pressed upwards by springs 2 towards a feeding roller 5 by means of which it is fed to regulating rollers 6. From thence the bundle of fibre is passed through a channel 7 and seized by grippers 8, reciprocated by means of an eccentric 25, the grippers being open and closed during reciprocation. Beneath the grippers an oscillating roller 9, actuated by means of an eccentric 11 and links 12, 30, is located, the roller being cut, as shown, to receive the fibre. A pasty binding material 15 is pressed by means of a rotating screw 16 through a nozzle 17 to the table 18, the fibre being pressed laterally through the binding material by the oscillating roller 9. The fibre is cut by a saw 13 which may be reciprocating or constitute an endless band. An air pipe 23 may be provided to remove loose fibres by suction. The machine may be provided with a number of feeding devices for fibres of different colours.
Patent GB-979757-A (GB)
Title: Improvements in or relating to bonding of materials together by means of urea-formaldehyde adhesives
Inventor: BIRKETT EDWARD FRANKLYN
IPC: C09J161/24
Filed: 1962-09-05
Abstract: A bonding material is made by mixing a liquid non-resinous reaction product of urea (U) and formaldehyde (F) in a mol ratio of F/U between 4:1 and 7.3:1 which has a pH of at least 7.0 and a total solids content of 60 to 90% by weight, with sufficient U to adjust the total mol ratio of F/U to between 1.25:1 and 2:1 at a temperature below 38 DEG C. The liquid nonresinous reaction products used are described in U.S.A. Specification 2,652,377. Extenders, e.g. wheat, shell or wood flour or a -cellulose, water and a hardening catalyst, may be added. The final mixtures are spread on the materials to be bonded and cured in situ, preferably with the aid of heat and/or pressure.  In Example 4, pine chips were first sprayed with a solution obtained by adding ammonium chloride to a glue solution made in the above manner, and then with an aqueous paraffin wax emulsion, and the treated chips were piled into a mat and press-cured at 149 DEG C. to yield chipboard. In other examples the glue is used for making laminates (see Division B5) and foundry sand cores. U.S.A. Specifications 2,193,630, 2,245,491, 2,320,301, 2,554,424, 2,559,578 and 2,772,197 also are referred to.
Patent GB-1507727-A (GB)
Title: Temperature responsive actuator
IPC: G01K5/44
Filed: 1976-09-01
Abstract: 1507727 Temperature-responsive actuators JAMES BROWN (KETTERING) Ltd 1 Sept 1976 [15 Aug 1975] 34089/75 Heading G1D A temperature-responsive actuating device comprises a metal housing 4 containing a duct 1 through which fluid may be passed and a space 5 filled with a liquid. A push-rod 10 is actuated by a piston 9 in response to the thermal expansion or contraction of the liquid the temperature of which varies with that of the fluid. The housing is preferably of aluminium and the duct 1 helicoidal. The rod 10 may be used to control the operation of a valve. In an application of the device the duct carries a flow of beer from a barrel, the device being arranged to control a valve to increase the pressure of carbon dioxide in the barrel as the temperature of the beer is increased.
Patent GB-184742-A (GB)
Title: Improvements in the treatment of sewage in underdrained settling basins
IPC: C02F11/16
Filed: 1921-12-19
Abstract: 184,742. Imhoff, K. Dec. 19, 1921. Gravity-separation apparatus.-Shallow underdrained settling-basins are used, a thin layer of sludge being deposited which can be dried where it is formed. Two or more basins are used in series. Fig. 1 is a plan of tanks 1 - - 6, of which tanks 3, 4 are in circuit and the others cut out for drying and removal of the sludge. A drain pipe e covered with sand or the like extends under each basin and leads to a drain g. The end of the pipe is kept closed during the settling but is open while the sludge is drying. The basins may form part of a plant for the activatedsludge process.
Patent GB-1223284-A (GB)
Title: A hydraulic roof support system for longwall faces
IPC: E21D23/04
Filed: 1968-07-18
Abstract: 1,223,284. Advancing mine roof supports. KLOCKNER-WERKE A.G. 18 July, 1968 [19 July, 1967], No. 34183/68. Heading E1P. An advancing mine roof support comprising a control frame B connected by advancing jacks 6, 7 to an outer frame A, C is provided with two pairs of steering jacks 11, 14 and 12, 15 in order to maintain parallelism for which purpose the chamber of annular crosssection in each of the jacks 11, 12 is equal in area to the full cross-section of the piston in the associated jack 14, 15 and intercommunication is established between each pair of jacks 11, 14 as shown under the control of a valve 30.
Patent GB-1021062-A (GB)
Title: Improvements in or relating to parquet blocks and methods of manufacturing and laying the same
IPC: E04F15/04
Filed: 1963-08-29
Abstract: Parquet floor blocks and the like have on at least a portion of one of the lateral surfaces a varnish- or glue-repelling surface. This may be provided by applying a coating of wax, soap, grease, tallow or oil; this may be applied to planks before they are cut into blocks, to the blocks before laying, or to the floor after laying in which case it penetrates into the cracks between blocks and is then cleaned from the upper surface.  Blocks so treated do not stick together as a result of glue from underneath or varnish from the upper surface penetrating between them.  The process may also be applied to planks for wall surfacing.
Patent GB-411044-A (GB)
Title: Improvements in refuse-collecting carts
IPC: B65F3/26
Filed: 1933-12-08
Abstract: 411,044. Refuse - tipping vehicles. OCHSNER, J., 3, Pelikanstrasse, Zurich, Switzerland. Dec. 8, 1933, No. 34626. [Class 108 (i).] In refuse-collecting vehicles of the kind which can be tipped rearwardly by means of a hydraulic or pneumatic piston, the container or body swings rearwardly on a lever which is engaged with the piston rod and is pivoted low down on the underframe so that the body swings down behind the underframe. The container 9, Fig. 2, is rigidly connected to a lever 4 having a hollow shaft 3 rotatably mounted in bearings carried by the chassis and forming a tipping axis. The lever 4 is also provided with a rigid transverse member 8 connected to the shaft 3 by arms 7, side plates 10 assisting also in the connection of the container 9 to the lever. The latter is operated directly from the piston rod 5 of an hydraulic or pneumatic ram pivotally carried by the chassis. In another form in which the container is adapted to be removably connected to the lever the latter 32, Figs. 8 and 9, which pivots by means of the shaft 33, is provided with transverse members 35, 36, the ends 45 of which form bearings whereby the container can be removably clamped to the lever 32. The piston rod 5 is shown pivotally connected to the lever 32 at 31. A pivotal foot 54 is shown to support the container when it is in the tipped position.
Patent GB-212986-A (GB)
Title: Improvements in or relating to the drying of china clay
IPC: F26B3/20
Filed: 1922-12-19
Abstract: 212,986. Vivian, S. Dec. 19, 1922. Drying floors.-In a drying-kiln of the kind in which the material to be treated, e.g. wet china clay, is spread on a sole or hearth beneath which hot gases are passed, and the composition of the sole is varied along its length, the variation is so effected that the heat transference through the sole is substantially uniform throughout. In one form the sole is composed of firebrick tiles one or more layers of heat-insulating material such as asbestos, of diminishing thickness from the furnace to the chimney end, or the heat-insulating material may be of uniform thickness and varying conductivity. In another form in which the composition of the sole is varied in three stages, the furnace section is formed of two layers of tiles 5 with an interposed layer of asbestos 6, the intermediate section of tiles 7, and the chimney section of metal plates 8. The flues 15 taper from the furnace to the chimney end, and they may be heat insulated by a layer of asbestos or a dead air space. In a further form in which the variation is effected in two stages the furnace section consists of one or more layers of tiles and one of asbestos. Specifications 14462/98 and 19915/02 are referred to.
Patent GB-1188120-A (GB)
Title: Beverage Dispensing Unit
Inventor: MCCANN GERALD PATRICK
IPC: B67D1/00
Filed: 1968-07-19
Abstract: 1,188,120. Beverage dispensers. McCANN'S ENG. & MFG. CO. 19 July, 1968, No. 34690/68. Heading A4T. [Also in Division F2] A beverage dispenser comprises a plastics body 10 having a first liquid passage (51, 52, Fig. 10), 53 leading to a bore 85 terminating in a discharge aperture 93 of a diffuser element 79 of a dispensing nozzle 11, said passage including a valve 45, a second liquid passage (54), 55, 56, 53 leading to said bore and including a valve 46, a third liquid passage 57, 58, 59 leading to an annular passage 89, 90, 91, 92 terminating in a discharge aperture 93a between nozzle portion 79 and an outer coaxial nozzle cone 78, said third passage including a valve 47, said valves being openable on energization of solenoids 31, 32, 18a provided with movable valve elements 74 normally biased closed by springs 75, said solenoids being actuated by microswitches (33, 40, Figs. 4, 5, 7) which are operated independently on pivoting ol levers (12a, 12b) by positioning a cup &c. (30, Fig. 1) beneath the nozzle. In one arrangement, operation of lever (12a) opens valves 46, 47 to allow flow of syrup and soda, say. Operation of lever (12b) opens valves 45, 47 to allow flow of a different syrup and soda, say. Both levers may be operated simultaneously to mix the three liquids. With different wiring arrangements, operation of lever (12a) would open all three valves, and operation of lever (12b) would open only two valves, the latter controlling the flow of still water. The second liquid passage (54), 55, 56 could alternatively lead to annular passage 89, 90, 91, 92. Each liquid passage (51), 56, 59 has a part 60 provided with an adjustable screw 61 for controlling or preventing liquid flow in the respective passage.
Patent GB-645500-A (GB)
Title: Improvement in gear pumps
Inventor: OLAH GEORGE
IPC: F04C2/08
Filed: 1947-12-30
Abstract: 645,500. Gear pumps. PRECISION DEVELOPMENTS. CO., Ltd. Dec. 30, 1947. No. 34718. Drawings to Specification. [Class 110(ii)] Excessive hydraulic pressure due to trapping of fluid between gear teeth is avoided by arranging that, whenever two pairs of teeth are simultaneously in contact, the distance of the contact point on the entering pair of teeth from the pitch point is less than of the distance of the contact point on the preceding pair from the pitch point. Preferably, the ratio of the distance is less than but not less than 1/5. In the case of gear teeth of involute form, these conditions corespond to the condition that the distance of the contact point on the entering pair of teeth is less than 40 per cent and preferably less than 33<SP>1</SP>/ 3  per cent but not less than 16.7 per cent of the base circle pitch. The invention is applied to a gear pump as described in Specification 578.809.
Patent GB-1400509-A (GB)
Title: Seats
IPC: A47C7/44
Filed: 1972-07-25
Abstract: 1400509 Adjustable backrests F DRABERT 25 July 1972 [19 April 1972] 34831/72 Heading A4J In an office type chair having a backrest of adjustable inclination, the backrest is supported on a rod 1 secured within a holder 2 pivotally connected at 5 to a seat support and secured in adjusted position relative to the seat support by the engagement of a spring-biased hand release lever 9 in one of a number of notches 13 on an extension 4 of the holder. Movement of the extension 4 is limited by a pin 11 provided on the extension engaging stop members 18 at the upper and lower ends of a hood. In a modification, Fig. 7 (not shown), the notches are formed on a plate secured to the seat support and the release lever which is spring-biased into engagement with the notches is pivotally connected to the extension. In a second embodiment Fig. 6 (not shown) a spring- loaded stop lever has a pin which passes through one of a number of apertures (13a) formed along an arc on the extension.
Patent GB-438093-A (GB)
Title: Improvements in or relating to process for curing and preserving plant products
IPC: A23L3/28
Filed: 1934-12-05
Abstract: Plant foliage, e.g. tobacco, hops, hay and alfalfa, sage, thyme, catnip, tea mint and other herbs is subjected during the process of curing, e.g. air curing, to the action of light having a wavelength above 4900 A DEG  and excluding all light having a wavelength below that figure, and is then packed in containers of a material adapted to admit light having a wavelength above 4900A DEG  and exclude all light having a lower wavelength.  Suitable light may be that having the colour of the chlorophyll pigments in plants and having a wavelength between 5270 and 6500A DEG  or orange-yellow light which excludes or absorbs all wavelength below 5000A DEG .  Hay, alfalfa, tobacco and other crops may be cured under suitable translucent hay-caps or in barns suitably protected. Foliage, e.g. in the form of cigarettes or cigars may be enclosed in a coloured wrapper having opaque binding material, e.g. foil, attached to the ends and serving as a closing means for the wrapper.ALSO:Plant foliage, e.g. tobacco, hops, hay and alfalfa, sage, thyme, catnip, tea mint and other herbs is subjected during the process of curing, e.g. air curing, to the action of light having a wavelength above 4900A DEG  and excluding all light having a wavelength below that figure, and is then packed in containers of a material adapted to admit light having a wavelength above 4900A DEG  and exclude all light having a lower wavelength.  Suitable light may be that having the colour of the chlorophyll pigments in plants and having a wavelength between 5270 and 6500A DEG , or orange yellow light which excludes or absorbs all wavelength below 5000A DEG .  Hay, alfalfa, tobacco and other crops may be cured under suitable translucent hay-caps or in barns suitably protected. Foliage, e.g. in the form of cigarettes or cigars may be enclosed in a coloured wrapper having opaque binding material, e.g. foil, attached to the ends and serving as a closing means for the wrapper.ALSO:Plant foliage e.g. tobacco, hops, hay and alfalfa, sage, thyme, catnip, tea mint and other herbs is subjected during the process of curing e.g. air curing, to the action of light having a wavelength above 4900A DEG  and excluding all light having a wavelength below that figure, and is then packed in containers of a material adapted to admit light having a wavelength above 4900A DEG and exclude all light having a lower wavelength.  Suitable light may be that having the colour of the chlorophyll pigments in plants and having a wavelength between 5270 and 6500A DEG , or orange yellow light which excludes or absorbs all wavelength below 5000A DEG . Hay, alfalfa, tobacco and other crops may be cured under suitable translucent hay-caps or in barns suitably protected. Foliage e.g. in the form of cigarettes or cigars may be enclosed in a coloured wrapper having opaque binding material, e.g. foil, attached to the ends and serving as a closing means for the wrapper.