baber/WOPTO huggingface dataset:
Patent GB-656750-A (GB)
Title: Device for automatically removing the cake in endless rotary filters
IPC: B01D33/00
Filed: 1948-09-15
Abstract: 656,750. Rotary filters. GIORGINI, M. Sept. 15, 1948, No. 24167. Convention date, June 1, 1946. [Class 46] In a rotary drum or endless filter. 1 having a hollow perforated stripping cylinder 4 for removing filter cake by resiliently pressing against the filter 1 so that the cake is intruded through the perforations of the cylinder, removed from the interior wall thereof by a stationary wire stretched between brackets 19 and discharged in a continuous manner through the ends of the cylinder, the stripping cylinder 4 is carried at the non-perforated part at each end of the cylindrical surface by a pair of idle rollers 6, 7, the lower rollers 7 serving to support the cylinder 4 and the upper rollers 6 serving also for transmitting a resilient pressure to the filter casing. The pressure rollers 6 are carried by rocking arms 8 which are acted upon through braces by pressure springs 11 or by counterweights.
Patent GB-381672-A (GB)
Title: Improvements in folding steps, emergency stairways and the like
IPC: B60R3/00
Filed: 1931-08-27
Abstract: 381,672. Vehicle emergency exits and steps. BUNN, C. W., 1, Herbert Street, West Bromwich, Staffordshire. Aug. 27, 1931, No. 24170. [Class 108 (i).] Relates to ladders or stairways for vehicles, ships, and buildings, of the kind comprising a number of pivoted steps which are so interconnected that they can be moved in unison. According to the invention, the steps 8, Figs. 1 and 2, are fitted with panels 20 which, when the steps are folded, lie flush with panels 19 between the steps and with the surrounding structure. In the form shown, the ladder is fitted to a vehicle 7 by an attachment member comprising two spaced bars 1 of angle section interconnected at intervals by cross-bars 3. The attachment member is secured to the vehicle body by screws passing through holes 5 disposed in either or both of the flanges of the angle-bars. The steps 8 pivot about grub screws which pass through the angle-bars and into lugs 10 formed on either side of the steps. A centrally disposed arm 12 extends rearwardly from each step and is drilled to receive a screw 14 which passes also through two links 13 which connect each step to the step above and the step below. Stops 15 on the angle-bars, by engaging with the lugs 10, serve to limit the pivotal movement of the steps, and cross members 16 between the angle-bars serve a similar purpose. To enable the steps to be manipulated, one of 'them is provided with a handle, or alternatively, each step is provided with a hand opening 9. The attachment member may be made as a single frame, or it may be made of separate lengths which may be entirely separate or may be pivoted or jointed together.
Patent GB-259372-A (GB)
Title: Improvements in machines for forming glassware
IPC: C03B9/18
Filed: 1925-09-28
Abstract: 259,372. Dicker, S. G. S., (Owens Bottle Co.). Sept. 28, 1925. Blowing.-Relates to a single-table machine of the Graham type, as described in Specification 127,995, and consists in arranging for the production of two or more articles simultaneously by each set of moulds. A suitable feeder is arranged to discharge the required number of charges of metal into the parison moulds. The machine comprises a mould carriage consisting of lower and upper tables 22, 23, Fig. 1, on which are mounted the finishing moulds 24 and the parison moulds 25, respectively, and these tables are rotated continuously about a central column 20 by means of a motor 26. The charges of metal received in the parison moulds ane compacted by air pressure supplied through a blowhead 85, and after the mould is opened, a transfer head carrying the ring moulds rotates about a horizontal axis to swing the parisons down into position to be enclosed by the finishing moulds. The moulds are arranged in groups or units spaced at equal intervals around the tables, and each unit consists of a number, preferalbly two, of each kind of mould, as shown in Fig. 2. Each transfer head also includes a cylinder 86 for actuating the plungers 83 which form the initial blow opening in the parisons. The moulds of each unit are preferably arranged with the moulding cavities at equal distances from the axis of the machine, but they may be arranged so that the cavities lie on a radius of the machine. Each finishing mould of the pair forming a unit comprises an outer section a, Fig. 6, and an inner section b hinged on a pivot 33 and connected by links to slides 37, 37<a>. The outer section a is first opened, and the inner section b then moves and releases the bottom mould 49 which tilts and discharges the finished articles 52. The parison moulds are opened end closed by similar mechanism. Each mould of a pair may have more than one moulding cavity. Delivering molten metal.-The feeder described in Specification 175,949 is adapted for use with the machine and comprises two plungers 94, Fig. 19, which are reciprocated by means of a rotating cam 101 and control the discharge of metal through outlets 93 in the flow of a forehearth 95. Shears 109 are situated below the outlets and they are actuated by an arm 112 which is periodically engaged by cams secured to the mould carriage of the machine.
Patent GB-1401740-A (GB)
Title: Tape recording and or reproducing apparatus
IPC: G11B5/54
Filed: 1973-05-21
Abstract: 1401740 Cassette recorder SONY CORP 21 May 1973 [22 May 1972] 24195/73 Heading G5R In a magnetic tape cassette recorder at least the main chassis and slidable head plate are formed of a synthetic resin. The main chassis 11, which includes motor bracket 71 is formed of ABS resin reinforced with 10% by weight of glass fibre and the head plate 12 is formed of more rigid AS resin reinforced with 20% by weight of glass fibre. In such an arrangement capstan 65 which with reel shafts 66, 67 is driven from motor 72, is subject to build up of electrostatic charge. To prevent this the capstan is mounted in a conductive bushing 77 which is coupled to a reference part point, e.g. ground, via a resilient, conductive plate 81 and wire 84. The resilient plate 81 also serves to retain an extension 27 of the head plate in a channel or guide 20 formed in the chassis 11. Rollers 87, 88 disposed above and below the extension in the channel assist movement of the head plate, which carries heads 69, 70 between its inoperative and operative positions. The presence or absence of a record tab covering an aperture 4C in the rear wall of a cassette is detected by an element 108 mounted on a slide member 104 of synthetic resin. The slide is guided by tabs 23 on the chassis which engage in a pair of slots 106 on the slide and is spring urged to the left (as shown) by a tongue 105 associated with each slot. If a record tab is present over the aperture the slide member is shifted to the right on entry of the cassette and by conventional means (not described) this movement allows a record operation. The Specification also describes the pushbutton assembly 31 which is also formed of ABS reinforced resin. Each button is spring urged outwards and the assembly includes a locking plate which holds each button, other than the stop button, in its depressed position. Operation of the stop button releases any depressed button. The coupling of the buttons to the recorder is not described.
Patent GB-1029394-A (GB)
Title: Worm machine
IPC: B29C48/76
Filed: 1963-06-19
Abstract: 1,029,394. Pug-mills. LILON ESTABLISHMENT. June 19, 1963 [June 20, 1962], No.24399/63. Heading B1C A pug-mill for thermoplastics has a degassing chamber 4 in which the screw section 5 of the rotor 11 has a thread the downstream flank of which makes a small angle, e.g. 15 degrees, with the screw axis while the upstream flank makes a much larger angle, e.g. a right-angle. Only a sector of the wall of the treatment chamber 4 is swept by the thread,see Fig. 3, and there is sufficient clearance between them to permit part of the material to pass over the thread. Part is also extended into the space 6 where it circulates and exposes an increased surface thus facilitating degassing. The wall of this part of the treatment chamber which co-operates with the screw may be made detachable and replaceable by one of different profile. The material is first kneaded by a screw 2 of conventional liapegoidal thread section and then passes through a diminishing annular gap between conical surfaces 1, 3; the gap may be adjusted by axial displacement of the rotor. A mill having a screw 5 with a pitch of 2 in., a thread depth of 0.12 in. and a periphenal speed of 12 f.p.s. will treat 330 1b. of polyamide per hour, the clearance between the  screw 5 and the wall of the treatment chamber being 0.004 to 0.008 in. The treatment chamber 4 may, instead of degassing, be used for introducing gaseous, liquid or solid components to be mixed into the material.
Patent GB-1104715-A (GB)
Title: Method of growing alpha-alumina single crystal ribbons
IPC: C01F7/422
Filed: 1965-06-09
Abstract: 1,104,715. Alpha Al 2 O 3  single crystal ribbons; aluminous ceramic. THERMOKINETIC FIBERS Inc. 9 June, 1965 [10 June, 1964], No. 24412/65. Headings C1A and C1J. Alpha Al 2 O 3  single crystal ribbons are made by passing hydrogen and water vapour over a melt of aluminium and periodically increasing the water content of the hydrogen over the melt during the period of growth, e.g. from 300 p.p.m. to 3000 p.p.m. The water content of the H 2  preferably reaches a maximum of 40,000 p.p.m. at the end of the run. The temperature of the melt may be periodically increased during the run within the range 2200-3500 F. The melt may be contacted with essentially dry hydrogen, e.g. less than 50 p.p.m. water, during a first pre-growth stage. The flow rate of the hydrogen is preferably rapid during the first pre-growth stage, and then substantially decreased during the growth stage. The aluminium melt may be contained in a receptacle comprising a fired intimate mixture of Al 2 O 3  and finely divided aluminium particles and optionally one or more additional oxides, namely SiO 2 , TiO 2 , Fe 2 O 3 , Cr 2 O 3 , ZrO 2  and cobalt oxide. The free aluminium content of the receptacle may be from 1 to 20% by wt.; and the constituents fired in air at 2200-2500 F. Alpha alumina single crystal ribbons of rhombohedral cross-section having a width to thickness ratio of from 1 : 1 to 12 : 1, a length of 0À5 to 4 inches, a width of at least 0À5Á and a length:width ratio of from 10 : 1 to 25,000 : 1 are claimed per se.
Patent GB-674714-A (GB)
Title: Improvements in apparatus for mining coal or other minerals from the solid
IPC: E21C27/26
Filed: 1948-05-20
Abstract: 674,714. Mining-machines. JOY MANUFACTURING CO. May 20, 1948. [May 28, 1947] No. 24435/50. Divided out of 674,626. Drawings to Specification. Class 68 (i). In a mining-machine as described in Specification 674,626, the disintegrating mechanism is not traversed laterally across the face.
Patent GB-336705-A (GB)
Title: Improvements in exhaust silencers
IPC: F01N1/08
Filed: 1929-08-10
Abstract: 336,705. Hills, H. G. Aug. 10, 1929. Exhaust silencers.-Gases enter at d an annular space f<1> formed between an outer cylindrical casing a and an inner vessel f the ends of which near the inlet are conical. The wall of the inner vessel is perforated for about one-half its length near the inlet end, and a perforated cone g is provided near the outlet end e. The area of the annular passage f<1> is not, and the area of the perforations in cone g are, less than the area of the inlet d. The vessel f is not traversed by the gases, but serves as a space into which the gases at their highest pressure can expand. In a modification the outlet end of vessel f is flat, and the gas outlet is an annular passage formed between the flared end of casing a and a conical baffle.
Patent GB-312007-A (GB)
Title: Improved manufacture of beryllium oxide
IPC: C22B35/00
Filed: 1928-08-27
Abstract: 312,007. Sloman, H. A., and Vivian, A. C. Aug. 27, 1928. Beryllium oxide.-A concentrated solution containing beryllium sulphate is saturated with beryllium hydrate to give a basic sulphate, and the solution then mixed with water to precipitate beryllium hydrate containing sulphate. Coagulation of the precipitate is determined by the presence of a small amount of ammonium sulphate. Beryllium oxide free from sulphate may be obtained by subjecting a precipitate of the hydrate to a reducing roast, for instanceby mixing it with pure carbon, heating the mixture to a temperature below that at which the oxide becomes insoluble in strong acids, say at 700‹ C., and finally burning away excess of carbon at a low temperature. In carrying out the process a crude sulphate liquor may be first purified by precipitating impurities with beryllium hydrate obtained from a part of the liquor by precipitation with ammonia, and then be concentrated by vacuum or by circulation round a circuit comprising a receiving vat, a pump, a feed vessel, and a vertical sleeve of mutton cloth kept cylindrical by ebonite rings and fitted with electrical heating means. In either case the use of metal apparatus is avoided because of the corrosive nature of the solution. From a part of the concentrated solution beryllium hydrate is obtained as before, and the rest of the solution saturated therewith. Heavy metal sulphides are precipi. tated by sulphuretted hydrogen, and dilution with precipitation of the hydrate then effected, the necessary ammonium sulphate being already present. The precipitate, after filtration and washing, is dried at 60-70‹ C., and freed from sulphate as above described.
Patent GB-700756-A (GB)
Title: Improvements in or relating to ceramic materials and methods of making same
Inventor: CAMPBELL JAMES THOMAS
IPC: H01B1/08
Filed: 1950-10-10
Abstract: A composition of positive temperature coefficient of resistivity comprises a compacted and fired mixture of zinc oxide with up to 30 per cent. of at least one other acidic oxide. Specified acidic oxides are those of titanium, zirconium and silicon.  Compounds convertible to the oxides on firing may be used, and firing is in an oxidizing or inert atmosphere.  A temporary binding agent, e.g. polyvinyl or polyacrylate resins or gum arabic, is used in compacting.  The Provisional Specification describes the use of zinc phosphate in place of the acidic oxide.
Patent GB-636115-A (GB)
Title: Improvements in or relating to pressure controls for turbines
IPC: F02K1/15
Filed: 1946-08-19
Abstract: 636,115. Fluid - pressure servomotor control systems. UNITED AIRCRAFT CORPORATION. Aug. 19, 1946, Nos. 24718 and 24719. Convention dates, April 15, 1944. [Class 135] [Also in Group XXVI] A gas turbine power plant for use in a vehicle, e.g. aeroplane, includes a thrust nozzle, the cross-sectional area of which is adjustable automatically in response to changes in turbine inlet pressure to maintain constant operation characteristics in the turbine. In an embodiment, the area of the nozzle 16, Figs. 1 and 2, can be adjusted by a valve 18 which is actuated by a spring-loaded servo-piston 22 moving in a cylinder situated in a faired housing 20. Pressure fluid from a conduit 52 can be applied to the right-hand side of the piston to open up the nozzle, and the connection of this side of the piston to the pressurefluid line or to an exhaust line 76 is controlled by two valves 46, 64 in series. The other side of the piston is in permanent communication with the exhaust line. Valves 46, 64 are controlled by bellows 40, 60, respectively, of which the inside of bellows 40 is subject to the atmospheric and ram pressures combined and the outside is subject to the pressure in the turbine exhaust 14. Bellows 60 consists of a double bellows of which the inner one is subject to the pressure at the turbine inlet 12 and the outer one is subject to turbine exhaust pressure. The space between the two bellows is sealed and may be evacuated. In a modification, the adjustable part of the nozzle consists of pivoted flaps 18<SP>1</SP>, 20<SP>1</SP>, Fig. 3, and the piston and cylinder of the actuating servomotor are each connected to a flap so that both the piston and cylinder move. The amount which the flaps can open is limited during normal use and the limiting position is reached when the piston covers up the exhaust port 80. During take-off, when full power is required, actuation of the fuel lever 102 moves a bar 100 into contact with a plate 96 whereby an electrical circuit is completed and a solenoid 90 energized to open a valve controlling an alternative exhaust port for the servomotor to allow the latter to open the flaps 18<SP>1</SP>, 20<SP>1</SP> wider to reduce further the back pressure on the turbine and give a diffuser action. At the same time, a solenoid 114, in parallel with solenoid 90, is energized and valve 461 is actuated to ensure that the flaps open out. As the aircraft speeds up, ram pressure applied to the inside of a bellows 104 causes plate 96 to move away from the contact on bar 100 and the solenoids are de-energized. The space within the inner member of bellows 104 is sealed.
Patent GB-518001-A (GB)
Title: Improvements in, and connected with, the socket tubes for electric couplings
IPC: H01R13/11
Filed: 1938-08-23
Abstract: 518,001. Two-part couplings. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HARRISON, B. G. Aug. 23, 1938, No. 24741. [Class 38 (i)] A resilient slit socket a having a lateral lug b for the connection of a supply conductor has the slits e, f divergent at an angle to one another. The slits e extend into the lug b and diverge towards its opposite sides. A transverse slot may be cut in the socket about midway of its length.
Patent GB-994974-A (GB)
Title: Improvements in and relating to storage conveyors
IPC: B61B10/02
Filed: 1961-07-07
Abstract: 994,974. Storage conveyers. TISSMETAL LIONEL - DUPONT, TESTE & CIE. July 7, 1961 [July 8, 1960], No. 24755/61. Heading B7L. In a storage conveyer of the kind comprising trolleys C1, C2 . . . Cn1, Fig. 1, driven by a chain A along a track B, the chain having at intervals pairs of driving and retaining pawls 2, 3 respectively, which engage the heads 6 of the trolleys, the pawls being pivotable out of the path of the heads 6 as a trolley enters the storage zone shown in Fig. 1, wherein the track B is downwardly inclined, rollers 4 provided on each of the driving pawls 2 engage a fixed downwardly inclined ramp 5 and lift the pawls 2 out of engagement with the trolleys, the retaining pawls 3 remaining in engagement with their associated trolley heads 6, e.g. on a trolley Cn, until the trolleys abut another trolley, e.g. C4, held in the storage zone, this preventing undue acceleration of the trolleys along the inclined track, and the foremost trolley, e.g. C2, being held in the storage zone by a stop E, which may only be released when a pair of pawls 2, 3 is in a position to take up the drive to a released trolley. The stop E is constituted by the nose 28, Fig. 7, of a plate 26 held on a fixed vertical pivot 29. At the end 5a, Fig. 5, of the ramp 5 and in line therewith, is disposed a plate 13 and a lever 19 so that a roller 4 will pass over the plate 13 and the surface 21 of the lever 19 before allowing the associated driving pawl 2 to drop back to its trolley engaging position, thus the pawl is prevented from engaging with the head 6 of a trolley held by the nose 28. The lever 19 is pivotable about a horizontal pivot 20 and carries a finger 24 which engages in an opening 25 in the plate 26, and holds it locked in the position shown in Fig. 7. The plate 13 may be raised to the position 13a, Figs. 5, 8, by vertical movement of a rod 14 fixed to the plate 13, this movement being effected manually or by the use of an electromagnet or an hydraulic or pneumatic jack. A roller 4 will then pass under the plate 13 and allow its associated pawl 2 to drop into its trolley engaging position The roller 4 then contacts an adjustable cam 22 fixed to the lever 19 and lifts this lever and the finger 24, Fig. 8, so that the plate 26 is free to pivot to allow the passage of the head 6 of the trolley which has just been engaged by the driving pawl 2. As the plate 26 pivots it pushes a lever 30a, 30b about its vertical pivot 29 to the dotted line position shown in Fig. 7, wherein its end 30a will be engaged by the head 6 of the released trolley, this lever serving to return the plate 26 to the position shown in Fig. 7, wherein the finger 24 will drop back into the opening 25 to lock the plate 26 in position, and the nose 28 will arrest the succeeding trolley.
Patent GB-602499-A (GB)
Title: Improvements in or relating to the manufacture of butadiene
IPC: C07C7/10
Filed: 1945-09-25
Abstract: n-Butane is catalytically dehydrogenated to n-butene, the C4 hydrocarbon product is fractionated to remove butene-1 from butene-2 and n-butane which are solvent extracted to selectively dissolve butene-2, the recovered butene-1 and -2 are combined and catalytically dehydrogenated in a second stage, and butadiene recovered from the product.  Isobutene in the product of either stage may be selectively polymerized to the dimer.  The products from the first dehydrogenation stage are cooled, compressed, and scrubbed to separate C4 hydrocarbons which p  are fractionated, the bottoms then being treated in a two-section tower with furfural, and the rich solvent stripped with water vapour to recover butene-2.  The butene-1 and -2 from fractionator and stripper respectively are fed to the second dehydrogenation stage and the products treated to separate a C4 and heavier mixture containing some C3 and lighter.  This is fractionated to give C3 and lighter and any methylacetylene as overhead, the C4 and heavier being further fractionated to give butadiene and lighter as an overhead which is extracted with furfural, the solution stripped, and the hydrocarbons fractionated to give butadiene overhead, and butene-2 and C4 acetylenes as bottoms. The combined butene-2 bottoms are fractionated and the recovered butene-2 recycled to the dehydrogenation.  The overhead from the furfural extraction is treated at least in part to polymerize isobutene, and the remaining butenes and butanes are recycled to the dehydrogenation. Instead of polymerization, for example with silica-alumina, isobutene may be removed with sulphuric acid, hydrogen chloride or mercury salts.  An example gives details of operating conditions employed in the various fractionators, absorbers, strippers, and polymerizer.  U.S.A. Specification 2,209,215 is referred to.