baber/WOPTO huggingface dataset:
Patent GB-1068337-A (GB)
Title: Method and apparatus for selectively controlling the extrusion of plastic material
IPC: B29C48/09
Filed: 1963-11-07
Abstract: 1,068,337. Extrusion machines. MONSANTO CHEMICAL CO. Nov. 7, 1963 [Nov. 13, 1962], No. 43957/63. Heading B5A. [Also in Division F2] In an extrusion machine variations in the cross-section of tubular extrusions are produced by the variation of the configuration of an extrusion outlet and of the pressure and rate of supply of plastic material to the outlet. Plastic material from a hopper 1 is fed continuously through a heated plasticizing unit 2 at a substantially constant pressure by a screw 5 into a passage 8, into which a plunger 10 may be reciprocated by a piston and cylinder assembly 15, 16 to increase or decrease the pressure and rate of supply of material to an extrusion outlet 27. A mandrel 24 mounted in a passage 23, in an extrusion head 22, leading to the extrusion outlet 27, is mounted for reciprocation by a piston and cylinder 32, 33 to vary the distance between the tip 25 of the mandrel 24 and the surface of a ring member 26 which contains the outlet 27. The reciprocable plunger 10 and mandrel 24 are actuated by the supply of fluid to the cylinders 16 and 33, respectively, controlled by a mechanical, electrical, pneumatic or hydraulic control mechanism, incorporating a timing mechanism. In operation it is suggested that by use of suitable timing of the movement of the plunger 10 and mandrel 24 tubular forms of the desired internal and external dimensions which vary along the axial length of the tube as illustrated in Figs. 9 and 11 (not shown) may be produced. In a further embodiment, Fig. 2 (not shown), the reciprocation of the plunger and mandrel is produced by timer controlled cam and follower mechanisms. A mandrel (54), Fig. 12 (not shown), is provided with a tip (56) of varying configuration which is mounted in an extrusion orifice (49), in order that by movement of the mandrel the appropriate portion of the tip may be brought into register with the orifice to produce a desired circular or oval bore, Fig. 15 (not shown), where required in the extruded tube. A knife (B), Fig. 12, may be provided to reciprocate across the mouth of the extrusion orifice to sever desired lengths of the continuously extruding tube. It is suggested that the capacity of the passage 8 may be varied by its walls being selectively expansible or contractible and that relative movement between the mandrel tip and the ring member containing the extrusion orifice may be achieved by moving the ring member or by joint mandrel and ring movement.
Patent GB-1386505-A (GB)
Title: Continuous process for producing hard ferrites starting from iron oxides or hydroxides
IPC: H01F1/11
Filed: 1972-09-22
Abstract: 1386505 Barium and strontium ferrites MONTECATINI EDISON SpA 22 Sept 1972 [24 Sept 1971] 44064/72 Heading ClA Barium and strontium ferrites of particle size less than 1 Á are made by (a) drying and granulating an aqueous slurry of an oxygen-containing iron compound (e.g. an oxide or hydroxide), barium or strontium carbonate and a binder (e.g. bentonite or molasses); (b) calcining the resulting granules for 0À5 to 4 hours at 950-1150‹ C. in a fluid bed reactor which is heated by the combustion in the bed of a hydrocarbon fuel and (c) cooling and wet-grinding the ferrite so obtained; the said drying of the slurry being effected by hot gases which comprise the hot gases coming from the fluid bed reactor. The atomic ratio of iron to barium or strontium'in step (a) is 11À5-12 : 1 to obtain the ferrite of formulµ BaO.6Fe 2 O 3  or SrO.6Fe 2 O 3 .
Patent GB-1011475-A (GB)
Title: Freeze-drying apparatus
IPC: F26B5/06
Filed: 1964-10-29
Abstract: 1,011,475. Freeze drying; refrigerating. J. L. ACHUCARRO. Oct. 29, 1964. No. 44072/64. Headings F4G and F4H. A pre-freezing and freeze drying apparatus comprises an evacuable cylindrical chamber 1 housing a heating assembly 14 which supports containers (not shown) holding the material to be dried, and means for pre-freezing the material comprising cylindrical containers 15, 16 holding a liquid refrigerant and solid carbon dioxide pieces 53 connected together by a cooling coil 38 and valve means so as to cause the automatic periodic reversal of flow of the liquid refrigerant through the coil. Access to the chamber is through a full length rectangular opening (not shown) formed by the removal of a vertical segment of the cylindrical chamber 1 in which a door is mounted in sealing contact and the chamber is evacuated through a valved port 13. The power to cause the refrigerant to flow is derived from the heat extracted from the material, containers, freezing apparatus and ambient atmospheric heat which generates sufficient gases from the subliming solid carbon dioxide pieces and evaporation of some of the liquid refrigerant to create superatmospheric pressure within the cooling apparatus which is utilized through relief valves 30, 31, an automatic valve 26 in a separate cylinder 23 connected to the cylinder 15, and vent valves 46. Each cylinder 15, 16 has a lid for charging with carbon dioxide and refrigerant and a syphon effect may be utilized for emptying the freezing assembly.
Patent GB-1474704-A (GB)
Title: Substituted uracils
IPC: C07D239/54
Filed: 1974-10-11
Abstract: 1474704 Trifluoromethylcyclohexyl uracils BASF AG 11 Oct 1974 [13 Oct 1973] 44083/74 Heading C2C Trifluoromethylcyclohexyl uracils of the general formula wherein R 1  is halogen; R<SP>2</SP> is C 1-3  alkyl or R<SP>1</SP> and R<SP>2</SP> together denote -(CH 2 ) n - in which n is 3, 4 or 5 and R<SP>3</SP> is H or acyl of up to 8C atoms, are prepared by reacting a trifluoromethyl cyclohexyl urea with a #-keto ester of formula or by reacting a trifluoromethylcyclohexyl isocyanate with a #-amino-ester of formula to give, in either case, a compound of formula and cyclizing the product in the presence of a base the said product or corresponding halocompound in which H has been replaced by halogen as R<SP>1</SP>. Amongst the examples the compounds 3 - (3 - trifluoromethyl) cyclohexyl- 5-bromo-6-methyl uracil and the 5,6-trimethyl lene derivative are prepared. Herbicidal compositions comprise as active ingredient a uracil of Formula I together with a solid or liquid carrier and optionally with an emulsifying, wetting or dispersing agent, a fertilizer, fungicide, nematocide, insecticide, antidote and/or plant growth regulator.
Patent GB-975898-A (GB)
Title: Apparatus for the carrying out of the reversing movements in installations for the composting of organic waste
IPC: B01F7/00
Filed: 1960-12-22
Abstract: 975,898. Compost turners. TRIGA TRAITEMENT INDUSTRIEL DES GADONES. Dec. 22, 1960 [Jan. 4, 1960], No. 44190/60. Heading B1C. In an installation for the composting of organic waste, Fig. 1, of the type in which the materials are spread on superimposed floors as at 2, 3 and are turned by ploughshares 6 moving about an axis 4, the materials being swept from the centre to the periphery and vice versÔ on alternate floors and falling from floor to floor, the ploughs are periodically temporarily reversed to prevent build-up of materials on their leading faces. A plough for use in such an installation, Fig. 2, comprises a depending trailing stem 6 having a transverse foot with a front clearing surface 10<11> and a rear clearing surface 10<1>; the front clearing surface is convex about a centre lying below the floor surface.
Patent GB-1343753-A (GB)
Title: Magnetic recorders
IPC: G11B5/86
Filed: 1970-09-16
Abstract: 1343753 Magnetic recording HONEYWELL Inc 16 Sept 1970 [25 Sept 1969] 44263/70 Heading G5R Signals recorded on two endless magnetic films 9 by respective heads 16 are transferred to a record 15 by guiding the films into and out of relatively stationary contact with opposite sides of the record 15. Record 15 includes fluid droplets containing metal flakes arranged to be reoriented when magnetized to produce a visible trace, and may be thermoplastic or thermosetting. Head 16 has a permanent magnet 1 and laminations 4 between end-yokes 2, 3 contacted by a wound core piece 6. The magnet 1 produces a magnetic mill centrally of the gap 5 and energization of the coil 7 shifts the mill according to the signal amplitude (Fig. 5, not shown). Transfer of the signals may be effected using belts as in Fig. 7 with erase heads 20, 20<SP>1</SP> arranged either to erase the signals after transfer, or to erase the signals before transfer except on the occurrence of a fault whereby the fault is recorded in the record 15. The transfer films may be on drums (Fig. 8, not shown) with the record 15 contacting one before the other. Instead of the heads 16, laterally movable heads may be used.
Patent GB-1529871-A (GB)
Title: E coli enterotoxin purification
IPC: A61K39/02
Filed: 1975-10-28
Abstract: 1529871 E. Coli enterotoxin vaccines SANDOZ Ltd 28 Oct 1975 [1 Nov 1974 11 Dec 1974 (2) 12 May 1975] 44308/75 Heading A5B E. Coli enterotoxin of at least 99% purity is obtained from a crude or pre-purified cell free culture filtrate of a fermenter culture of an enteropathogenic E. Coli strain by subjecting the culture filtrate to isotachophoretic or affinity chromatographic separations. The purified and heat-labile (L.T.) E. Coli enterotoxins may be formulated as vaccines.
Patent GB-1410777-A (GB)
Title: Coextrusion apparatus
IPC: B29C48/08
Filed: 1972-09-26
Abstract: 1410777 Extruding laminar films DOW CHEMICAL CO 26 Sept 1972 [27 Sept 1971] 44436/72 Heading B5A In the extrusion from an elongate die outlet slot 75, Fig. 2, of a film comprising a plurality of layers of thermoplastic synthetic resins from different extrusion sources, the resins are delivered to the slot 75 in the required layer juxtaposition through parallel channels 68 superimposed in a plane normal to the outlet slot 75, via a distributer 79 which is replaceably clamped within the die by a split clamp 7. The distributer is provided with channels extending between opposed planar surfaces thereof for distributing the resins from outlets 35, 39, 43, Fig. 4, of die inlet passages from each source, in the required juxtaposition to the channels 68. In the Figs. 2 and 4 embodiment the outlets 35, 39, 43, respectively for resins A, B, C, are rectilinearly aligned and the distributer channels may comprise a groove 91, Fig. 6, in one end face of the distributer, communicating with the outlet 43 and discharging to one or more of the channels 68, via an axial distributer passage 92 and rectangular outlet 93 in the other distributer end surface; a similar channel and outlet 96, 97, 98 communicating with the outlet 35; and an axial passage 94 and rectangular outlet 95 communicating with the outlet 39. In the embodiment of Figs. 4 and 7, grooves 100, 105 in one end surface of the distributer respectively communicate with outlets 43, 39, to similarly discharge respectively at 103, 104 and 108, 109, and an axial distributer passage 111 communicates with inlet 35 and discharges via a groove and outlet 112, 114 in the other distributer end face, the resins being distributed to the channels 68 in a layer juxtaposition of ABCBA or, if the distributer is rotated through 180 degrees, of CBABC. In the embodiment of Figs. 4 and 8 (not shown) the resin is distributed in a layer juxtaposition of ABACAB, or of CBCACB. In the Fig. 9 embodiment (not shown), the outlets DEFG of the die inlet passages are rectangularly arranged, and the distributer is provided with similarly grooved end faces, axial passages, and rectangular outlets producing a layer juxtaposition of DEGEGFD. For more complex layer juxtaposition, the distributer may be divided intermediate the end faces for the provision of further channels laterally distributing the resins.
Patent GB-1397482-A (GB)
Title: Photoelectric exposure meter
IPC: G01J1/16
Filed: 1973-09-24
Abstract: 1397482 Exposure meters ASAHI KOGAKU KOGYO KK 24 Sept 1973 [12 Oct 1972] 44714/73 Heading G2X An exposure meter comprises two emitter follower transistors Q 1 , Q 2  each having its emitter connected to a linearly variable exposure factor setting resistor VR 1  , VR 2  which in turn is connected to a constant current source (as shown FETs Q 3 , Q 4  with source resistors r 3 , r 4 ), means for applying to the base of transistor Q 1  a logarithmically compressed voltage corresponding to received light amount (as shown a CdS element R 1  and a diode D 1 ), means for applying to the base of transistor Q 2  a bias voltage having the same response to source voltage and ambient temperature variation as the log compressed voltage (as shown a resistor R 2  and a diode D 2 ) and a meter M connected to receive outputs from the resistors VR 1 , VR 2  to indicate whether the exposure factors set are correct with respect to the received light. If a photo-voltaic element is used instead of the CdS element R 1 , the bias voltage is obtained from an FET or Zener diode. The circuit is independent of voltage and temperature fluctuation and does not require non-linear resistors.
Patent GB-1072188-A (GB)
Title: Control of machine tools
Inventor: FIRTH JOHN
IPC: B23G1/16
Filed: 1964-11-03
Abstract: 1,072,188. Machine tool details. GIDDINGS & LEWIS-FRASER Ltd. Oct. 20, 1965 [Nov. 3, 1964, No. 44741/64. Headings B3B, B3C and B3N. The rotatable spindle 1, Fig. 1, of a drilling or tapping machine tool is fed by an hydraulic piston (4), Fig. 2 (not shown), the fluid supply to the latter being controlled by a throttling spool valve (12), connected to a toolholder 7, which is actuated to vary the feed rate when relative axial movement occurs between the tool holder and the spindle. Toolholder 7 is slidably mounted in a sleeve 5, and is rotated with the spindle by two pins 8. The toolholder is connected to the spool 12 by a rod 11 and a screw and nut connection 14, 15. In a tapping operation, spindle 1 is rotated, a restrictor valve (37), Fig. 2 (not shown), in the hydraulic circuit, is closed, and a directional valve (26) is set so as to supply fluid through parts 30, 33 and into chamber 32 of cylinder 3. The whole assembly including valve body 16 moves towards the work at a rapid advance rate. When the tap strikes the work, spring 19 assists the initial cut, and the tool-holder 7 and valve 12 move relative to body 16 so as to decrease the fluid passage 17, and the feed rate is dictated by the tap. When the hole is tapped, the direction of rotation of the spindle and the operation of valve (26) are reversed, fluid flows from the latter through a check valve (38) to the chamber (39) of cylinder (3), and the spindle is retracted at the same rate as the rate of unscrewing of the tap, until the tap clears the work, whereupon the rate increases to a fast retraction rate. To drill a hole, restrictor valve (37) is adjusted to give a desired rate of flow and the spindle moves towards the work at a rapid advance speed. The drill strikes the work and the forward movement of the drill, tool holder, rod 11, and spool 12, stops. Spindle 1 continues to advance to cause relative axial movement between spool 12 and body 16 to thus close passage 17. The rate of feed is now dictated by the flow through restrictor (37).
Patent GB-1224226-A (GB)
Title: Method of, and apparatus for, electrolytically roughening and oxidizing foils or strips of aluminium
IPC: C25F3/04
Filed: 1968-09-20
Abstract: 1,224,226. Electrolytic etching and oxidizing of aluminium foil or strip. ANO-COIL Ltd. Sept. 20, 1968 [Oct. 17, 1967], No.44823/68. Heading C7B. Aluminium foil or strip is electrolytically etched and then electrolytically oxidized in one continuous operation, at least one of the electrolytic treatments being carried out in an electrolyzer having two chambers and an alternating current electrode in each chamber, the foil or strip forming an intermediate conductor passing from one chamber to the other. As shown the strip 12 is passed in sequence through an electrolyzer 14 containing hydrochloric acid as electrolyte and in which the strip is etched using alternating current electrodes 32 and 34; a cleaning tank 40 containing sodium hydroxide; a second two-chamber electrolyzer 48 having alternating current electrodes 54, 56 and containing dilute sulphuric acid electrolyte, and a sealing tank 62 containing de-ionized water. At various points along the strip path, the strip passes through rinsing devices 38 and heating devices 46. Either the etching electrolyzer or the anodizing electrolyzer may be replaced by a direct current cell Figs.2 and 3, respectively, (not shown) the strip being connected to one pole of the current source by means of a contact roller, and a counterelectrode being suspended in the bath. Using a direct current electrolyzer for etching, hydrofluoric acid may be used as electrolyte. The process may include a step for colouring the foil or strip.
Patent GB-928707-A (GB)
Title: Speed governor apparatus
IPC: F02K3/00
Filed: 1961-12-15
Abstract: 928,707. Gas-turbine plant. BENDIX CORPORATION. Dec. 15, 1961 [Dec. 29, 1960], No. 45059/61. Class 110 (3). [Also in Group XXIX] A speed governor that may be set to have " droop " or isochronous characteristics comprises engine-driven flyweights 100 opposed by a spring 120 and acting on a cranked lever 112 which is pivoted at 114 and controls an orifice 136 to regulate the pressure in a conduit 80 communicating with a diaphragm actuator 56. Liquid at constant pressure is supplied through a restriction 70 to the conduit 80 and also directly to a chamber 148 containing a differential piston assembly 138 having a lever and linkage connection 151 with a slidable member carrying the orifice 136. The chamber 148 communicates through a restriction 154 with a chamber 146 and with an orifice 158 controlled by the lever 112, and the arrangement is such that any speed error detected by the flyweights causes an adjustment of the pressure in the conduit 80 to cause a corrective action of the actuator 56 and at the same time a change of pressure in the chamber 146 to cause movement of the orifice 136 in the sense to increase the pressure change in the conduit 80. Due to the fact that the piston assembly 138 can only come to rest when the lever 112 returns to a predetermined position relative to the orifice 158, the apparatus provides isochronous governing. A screwadjuster 88 determines the response time of the apparatus and a screw 90, when closed, causes the chamber 146 to be isolated from the chamber 148 whereby the piston assembly 138 remains in its uppermost position irrespective of the degree of opening of the orifice 158, so that the apparatus then governs with a drooping characteristic. The spring 120, which is adjustable by a lever 84, acts on the lever 112 through a hinged abutment 124 and a roller 128 which can be moved to alter the sensitivity of the apparatus. The actuator 56 operates a throttle valve in the fuel supply to a gas-turbine engine. Specification 604,466 is referred to.
Patent GB-1271662-A (GB)
Title: Electron beam welding
Inventor: MILES BRIAN LESLIE
IPC: B23K15/00
Filed: 1968-09-23
Abstract: 1,271,662. Welding by fusion. JOSEPH LUCAS (INDUSTRIES) Ltd. 10 Sept., 1969 [23 Sept., 1968], No. 45075/68. Heading B3R. A method of electron beam welding a part 11 (as shown, of titanium) into an aperture in a finished component 12 (as shown, a titanium turbine blade) includes the steps of inserting the part into an aperture in the component, excess material 11b being provided on the face of the part and/or the component to be presented to the electron beam, directing the electron beam so that it first impinges on the excess material, e.g. point 13, imparting relative movement to the beam and the component so that the beam impinges on and then follows the interface between the component and the part so that the part is welded to the component around the periphery of the part, imparting relative movement to the beam and the component so that the beam again impinges on the excess material, e.g. point 14, terminating the action of the beam and then machining away the excess material. The excess material may be integral with the part as shown, or possibly in the shape of raised lands, or in the form of a mask or masks arranged on the part and/or the component.
Patent GB-999925-A (GB)
Title: Feed device for woodworking machines
IPC: B27B25/02
Filed: 1962-11-29
Abstract: 999,925. Woodworking. E. LUTZ, and E. KAINZ, [trading as EUGEN LUTZ KOMM.- GES.]. Nov. 29, 1962 [Dec. 1, 1961], No. 45222/62. Heading B5L. A feed device for a woodworking machine comprises a unit consisting of a motor 5, Figs. 1 and 2, gear-box 6 and feed rollers 7a, 7b, 7c carried by a horizontal arm 4, the unit being mounted to pivot about a single oblique axis A-A at an angle α of 45 degrees to a plane B-B containing the roller axes so that the feed rollers can be brought from a normal position in which they are arranged vertically to a second position in which they are arranged horizontally. The arm 4 is vertically, axially and rotatably adjustable on a stand (not shown) extending from the table of the machine which has fences 10, 11 for guiding a workpiece 12 past a rotatable cutter 2. The end of the arm 4 releasably carries a supporting rod 8, the lower end 8a, Fig. 8, of which has a surface inclined at 45 degrees for engagement with a correspondingly inclined surface on the gear-box 6. A pin 19 extends from the gear-box and carries a nut 22 by which the unit can be clamped to the rod 8. A spring-loaded detent 24 may be provided for selective engagement with holes 25, 26 whereby the unit can be located in one or other of its two positions, as shown in Figs. 1 and 3. The rollers may be adjustable into the oblique position shown in Fig. 5 by pivoting the unit about the axis of the rod 4.
Patent GB-1466416-A (GB)
Title: Rotary internal combustion engine
IPC: F02B53/00
Filed: 1974-10-18
Abstract: 1466416 Rotary positive-displacement-fluidmachines I RUZIC 18 Oct 1974 [18 Oct 1973]  45291/74 Heading F1F In an I.C. engine fuel and air mixture is drawn into intake chambers 23, 24 through openings 25 by sliding vanes 26, 27, 28 on a rotor 12, transferred to chambers 70, compressed by vanes 80 on rotors 72, transferred to combustion chambers 31, 32 through passages 90 when recesses 92, 93, 94 are in register therewith, and ignited by e.g. sparkplugs 33, 34, the expanded combustion products being ejected through passageways 95, 96. To cool the rotor 12 the fuel and air mixture may pass therethrough on its way from a carburetter 60 to the openings 25, and fins 65 may be fixed to the inner side of said rotor. The vanes may have sealing members 46, 77 and be kept in contact with casings 11, 71 by stationary cams 50, 83. Axial sealing members 104 may be secured to the rotor 12 and slide in recesses within casing end-walls 14, 15. The rotors 72 may be driven by the rotor 12 through a chain and sprocket-wheels, Fig. 3 (not shown). In a second embodiment, Fig. 4 (not shown), the rotor 12 has four vanes.
Patent GB-1047763-A (GB)
Title: Apparatus for preheating crude cement dust
IPC: F27B7/20
Filed: 1963-11-18
Abstract: 1,047,763. Preheating and charging cement raw materials. WESTFALIA DINNENDAHL GRÍPPEL A.G. Nov. 18, 1963 [Dec. 20, 1962], No. 45386/63. Heading F4B. In apparatus for preheating cement raw materials being charged into a rotary kiln 1 and comprising a series of cyclones 3, 7 through which the raw material passes generally in countercurrent to hot gases leaving the furnace, each vertical hot gas pipe 2 is formed with superposed frusto-conical shoots 9 the annular tops 10 of which are formed with openings 12 closed by covers 11, Fig. 2 (not shown).