baber/WOPTO huggingface dataset:
Patent GB-1159156-A (GB)
Title: Broadband Structures for Waveguide Hybrid Tees
IPC: H01P5/20
Filed: 1966-10-04
Abstract: 1,159,156. Waveguide magic-T junctions. MICROWAVE ASSOCIATES Inc. 4 Oct., 1966 [6 June, 1966], No. 44367/66. Heading H1W. The E-plane arm of a folded magic-T junction is matched to the junction by means of symmetrically arranged inductive posts. The magic-T is of the " folded " type, i.e. the symmetrical arms 15, 16 lie parallel or at a small angle to each other. In the example shown, both the symmetrical arms 15, 16  and the H-arm 10 consist of waveguides of half the normal narrow dimension, the E-arm 11 having normal dimensions. Matching posts 26-29 for the E-arm lie on a locus of constant radius which may, in one example, be equal to the wide dimension a of the waveguides and may be centred at the point where the common wall 25 intersects the plane containing the nearer narrow wall of the E-arm 11. Alternatively, the radius may exceed a and be centred at a point on the common wall 25 such that 0.925 of the radius lies beyond the end of the common wall. In the example shown, posts 26, 27 lie on the centre-lines of arms 15, 16 and posts 28, 29 in a plane bisecting the broad walls of the E-arm 11. The H-arm 10 is matched to the junction by adjusting the distance d (as shown, d #a/2). Any other known means of matching the arms to the junction may be used; buttons, posts, irises are shown in drawings illustrating the prior art. The invention may also be applied to folded junctions of the type in which the H-arm lies on the same axis as the E-arm, the cross-sections of the two arms being orthogonal to each other.
Patent GB-1493890-A (GB)
Title: Hydraulic fracturing process using reverse flow
IPC: E21B43/26
Filed: 1975-10-28
Abstract: 1493890 Fracturing formations O M KIEL 28 Oct 1975 [27 Jan 1975] 44380/75 Addition to 1460647 Heading E1F A method of hydraulically fracturing an underground formation comprises a double cycle including injecting fluid into the formation at a pressure sufficient to fracture the formation, maintaining the pressure for at least three minutes, discontinuing the fluid injection, allowing at least one period of reverse flow from the formation for a period of time to allow a pressure drop in the fluid, resuming injection of the fluid into the formation, and discontinuing the latter injection of fluid. The period of reverse flow may be from 30 seconds to five minutes and may be sufficient to return 0.25 to 1.00% by volume of the fluid injected into the formation. The method may include two or three double cycles, the well not being produced between double cycles. The injection pressure during each double cycle subsequent to the first double cycle is at least 10% greater than during the first double cycle and the periods of discontinuance of injection, other than the last one, are such that the pressure does not fall to less than <SP>1</SP>/ 3  of the amount of increase in pressure during the previous injection. Each period for discontinuing injecting fluid, except the last period, lasts from 5 to 60 minutes. Sand may be injected with the. fluid to limit the vertical conductive extent of the fracturing and to act as a fluid loss control agent.
Patent GB-994038-A (GB)
Title: Improvements in or relating to means for guiding hose and the like off a reel
Inventor: TROTTER ROBERT
IPC: F16L3/16
Filed: 1962-12-01
Abstract: 994,038. Hose guides. ROTOLIFT MANUFACTURING CO. Ltd. July 22, 1963 [Dec. 1, 1962], No. 45570/62. Heading B8M. A base or bracket 10 on which an arm 15 is pivoted so as to guide a hose or like flexible member off a reel may be mounted on a vertical or horizontal surface and has two tapped holes 13, 14 in one of which the arm 15 is mounted so that it may pivot about a vertical axis. On the arm are rollers 17a, 17b and 19. Hollow portion 11 of the base may house an electric switch actuated by the running out of the hose to start a pump or an alarm. Specification 994,039 is referred to.
Patent GB-1391280-A (GB)
Title: Process for preparing protein concentrate from microorganisms
IPC: C12N1/00
Filed: 1972-10-03
Abstract: 1391280 Extracting protein from microorganisms SCP-EXPLOATERING AB 3 Oct 1972 [11 Oct 1971] 45604/72 Heading C6F Micro-organisms in suspension are subjected to cell wall disintegration and then the pH is raised to > 6 (preferably not greater than 12) and the temperature to > 30‹C and the thus precipitated protein is separated. Disintegration is preferably performed mechanically. The cell walls may be removed before precipitating the protein from the suspension by raising the pH to dissolve the protein and filtering. A salt e.g. sodium chloride in an amount of up to 20%, may be added prior to the precipitation step.
Patent GB-1272647-A (GB)
Title: Improvements in or relating to electric time switch mechanisms
Inventor: GRAY BERNARD HERBERT LESLIE
IPC: G04C23/10
Filed: 1969-09-17
Abstract: 1,272,647. Time switches. SANGAMO WESTON Ltd. 15 Sept., 1970 [17 Sept., 1969], No. 45895/69. Heading H1N. A heavy-current time switch comprises a rigid switch arm 10 having one end pivotally mounted and electrically connected to a first external connection terminal 14, an abutment 18 carried by the arm 10 intermediate its ends, spring means 15 at the other end of the arm 10 biasing the abutment 18 towards rotatable timecontrolled cam means 19, a stationary switch contact 22 carried by a second external connection terminal 23, and a co-operating movable contact 21 actuable by the arm 10. As shown, arm 10 is channel-shaped and cut away to be flexible at 11, the spring 15 is a tension spring, abutment 18 is adjustable by screw 17, and contact 21, carried on a blade spring 20, has a stem 24 passing through arm 10 with an enlarged head 25 such that arm 10 can pull contact 21 away from contact 22, but when the contacts are closed vibration of arm 10 is not transmitted to the contact 21. In a second embodiment (Figs. 2 and 3, not shown) the spring is a compression spring (34) and the moving contact is carried directly on arm 10 and is enclosed in a cup-shaped shroud (35). The arm 10 may be pivotally connected to terminal 14 by a hinged joint and a flexible copper braid.
Patent GB-1236217-A (GB)
Title: Document feeding apparatus
IPC: G06K13/10
Filed: 1968-09-30
Abstract: 1,236,217. Separating sheets. INTERNATIONAL BUSINESS MACHINES CORP. 30 Sept., 1968 [3 Oct., 1967], No. 46294/68. Heading B8R. [Also in Division F2] Document-feeding apparatus incorporates a feed roller selectively movable between positions adjacent a feed path and remote from the feed path, wherein the feed roller is formed of resilient material which is compressible between two end plates when in the feed position to radially expand the roller so that its peripheral surface contacts a document. Apparatus, Fig. 1.-Documents 10 are supported on a platform 12 carried by rod 14 and urged by spring 15 against a rail 16 provided with a cut-out portion 18 through which a feed roller 19 may be projected. The feed roller 19 is formed of resilient material, has a hollow interior, and is compressible between two flanges (22), (26), Fig. 2 (not shown), connected to coaxial shafts (21), 25, shaft 25 being hollow and surrounding shaft (21). The roller 19 is continuously rotated through drive pulley 45, belt 46 and pulley 31. Solenoid 50, when energized, first moves both shafts (21), 25 axially to project roller 19 through cut-out 18 and then moves them axially relative to each other to expand the roller radially and feed a document 10 through a gap defined by throat 40, 41 until it is sensed by photo-electric device 55, 56 which de-energizes the solenoid. Co-operating feed rollers 60 continue advancing the document. The solenoid may be replaced by a continuouslyrotating cam.
Patent GB-1189938-A (GB)
Title: Apparatus for Replenishing Developer in an Electrophotographic System
Inventor: ULARY RUSSELL ROBERT
IPC: G03G15/06
Filed: 1968-09-30
Abstract: 1,189,938. Electro-photographic apparatus. RCA CORPORATION. Sept.30, 1968 [Sept. 28, 1967], No. 46406/68. Heading G2H. Hot-melt developer material 14 used to develop a latent image in electro-photographic apparatus is replenished by the intermittent heating of a body 82 of the developer material. The developer is contained within a trough 60 and is conveyed by heated rollers 63, 65 to an electro-photographic recording medium 12. The replenishment material is contained within a wedge shaped container 80. A heating element having supply leads 100, 102 is disposed within the container, a portion (106) Fig. 3 (not shown) of the element extending through a lower opening (104) in the container to direct the molten replenishment developer into the trough. The heating element is energized either upon energization of a motor driving roller 18 or upon energization of a projector forming a light image upon the recording material.
Patent GB-1357077-A (GB)
Title: Harvesting machine
IPC: A01D69/00
Filed: 1972-10-09
Abstract: 1357077 Forage harvesters DEERE & CO 9 Oct 1972 [12 Oct 1971] 46495/72 Heading A1F A self-propelled harvester comprising a detachable header 42, chopper 26 and auger conveyer 70 feeding a discharge blower 72 is characterised in that the harvester parts are driven from an engine 22 via a clutch operated shaft 102, and bevel gears 106 driving blower shaft 110 which has pulley 112 from which the other harvester parts are driven via belts 118. The belt-driven pulley 116 is mounted on the chopper shaft 32 which in turn drives a change speed transmission 126 for the header and crop feed parts and also drives the auger conveyers 70 through a chain 130 and bevel gearing. The belts 118 are tensioned by a hydraulically operated idler wheel. A continuously operating engine output shaft 92 drives a variable displacement hydraulic pump 96 which supplies wheel driving hydraulic motors 98, 100.
Patent GB-1338222-A (GB)
Title: Bicycles
IPC: B62M1/24
Filed: 1970-11-23
Abstract: 1338222 Bicycles P BURNS 23 Nov 1970 [23 Sept 1969] 46687/69 Heading B7E A bicycle has drive means consisting of, on each side thereof a pedal lever 11 pivoted at its rear end to one end of a pivot arm 14, the other end of the pivot arm being pivoted to the bicycle frame and connected intermediate its ends to a crank plate 10 rotatably mounted on the spindle 6 of rear wheel 2, the plate 10 being connected with a first gear-wheel 9 such that on downward movement of the pedal lever 11 the plate is rotated and via gear train 9, 5 and 4 the wheel rotated, the gear-wheel 4 being formed integrally with the wheel hub. The levers are guided in slotted members 16. The drive mechanism may be removed from the wheel by releasing a spring clip 12, disconnecting the plate 10 from gearwheel 9 by removing cap screws 18 and releasing this gear-wheel which is formed in two complimentary halves.
Patent GB-1276411-A (GB)
Title: Drilling fluid dispersing and/or fluid loss control agents
IPC: C09K8/035
Filed: 1970-10-01
Abstract: 1276411 Boring earth &c DRESSER INDUSTRIES Inc 1 Oct 1970 [17 Oct 1969] 46717/70 Heading E1F. [Also in Division C2] A drilling fluid dispersing and/or fluid loss control agent which (1) at least one ionic salt of sulfonated lignite or sulfonated humic acid, in which the cation is an alkali metal, alkaline earth metal, or ammonium, and (2) at least one metal chelate of sulfonated lignite or sulfonated humic acid wherein the metal is boron, scandium, gallium, germanium, arsenic, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, silver, cadmium, indium, tin, antimony, hafnium, tantalum, tungsten, osmium, iridium, platinum, gold, mercury, thallium, lead, vanadium, bismuth, chromium, manganese, iron, cobalt, nickel, zinc, aluminium, silicon, a lanthanide, an actinide, an alkali metal or an alkaline earth metal. The agent may also contain one or more metal salts or chelates of lignosulphonate and/or lignite, said metal being an alkali metal, alkaline earth metal, iron, aluminium, chromium or copper. Drilling fluids may comprise a clay suspended in an aqueous and/or organic base and 0.1 to 5% of an agent as described above based on the total weight of the fluid.
Patent GB-1315257-A (GB)
Title: Web splicing apparatus
IPC: B65H21/00
Filed: 1971-10-08
Abstract: 1315257 Splicing webs AGFA-GEVAERT AG 8 Oct 1971 [8 Oct 1970] 46942/71 Heading B8R An apparatus for butt-splicing webs 5, 5<SP>1</SP>, Fig. 2, using adhesive tapes 22<SP>1</SP>, 24<SP>1</SP>, Fig. 3, which may be selectively applied to one or both faces of the webs across the butt-joint includes a pair of suction ducts 1, 1<SP>1</SP> holding the trailing and leading ends of the webs 5, 5 which ends are cut off by a cutting device (3, Fig. 1) movable along the ducts 1, 1<SP>1</SP> and provided with rotary cutters 8, 9 of which the cutter 8 is driven by rollers 9, 9<SP>1</SP>. The rollers also displace the cutting device along the suction ducts. Following cutting the web ends and restoration of the cutting device to its initial position the buttends of the webs are joined by the adhesive tapes 221, 24<SP>1</SP> which are dispensed from supply rolls 22, 24 mounted in a splicing device 4 and displaceable along the suction ducts by rollers 19, 20, the former of which also drive a presser roller 25 mounted on the roller shaft and cooperating with an idling presser roller 26.
Patent GB-1043269-A (GB)
Title: A burner assembly, more particularly for gas water heaters
IPC: F23D14/04
Filed: 1963-11-28
Abstract: 1,043,269. Gas burners. H. VAILLANT, [trading as JOH VAILLANT KOMM.-GES.]. Nov. 28, 1963 [Feb. 14, 1963; May 14, 1963; May 16, 1963], No. 46988/63. Heading F4T. A burner assembly comprises a plurality of burners 9 fed by gas nozzles 4 on a T-shaped distribution pipe 3 connected to a central connecting-piece 1 adapted to be screwed to a gas supply line. The connecting-piece has a projection 5 carrying a pilot burner 6 providing three flames, two of which are directed to adjacent burners and the third towards a bimetal strip 7 controlling a pilot safety valve (not shown). Each burner 9 comprises two pressed metal cups 10, 10<SP>1</SP> forming a mixing chamber closed at the top by an insert 15 of U cross-section having a plurality of burner slots 16. To facilitate ignition of one burner from the adjacent burner the insert has an enlarged part 21 having burner slots which extend to its edges. Four burners 9 are connected together by two sheet-metal bars 17, 18 having U-shaped cut-outs into which the burners are inserted, the sides of the cut-outs entering grooves in the burners, and the unit thus formed is secured to the distribution pipe 3 by a holding sheet 8 which is secured to the distribution pipe 3 and engages a cut-out in a rib 11 on each burner. The bar 17 is secured by a screw 19 to the projection 5 on the connecting- piece. The gas nozzles 4 are provided with lateral openings for the admission of primary air and project into mouthpieces 12 formed on the mixing chambers. In a modification, Figs. 5, 6 (not shown), the gas nozzles do not have air inlets and are screwed into thickened parts of the distribution pipe; and the mouthpiece of each burner has a U-shaped projection having circular recesses adapted to grip the distribution pipe between two thickened parts thereof.
Patent GB-1023273-A (GB)
Title: Improvements in or relating to the control of nuclear reactors
Inventor: BANKS ROBERT
IPC: G21C7/10
Filed: 1963-11-28
Abstract: 1,023,273. Reactor control rods. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 30, 1964 [Nov. 28, 1963] No. 47014/63 Addition to 940,586. Heading G6C. A control element for operation in a vertical channel 12 in the core 13 of a nuclear reactor comprises a series of articulated plates 16a, 16b, 16c ... 16x, 16y, 16z of neutron absorbing material each linked edgewise to its neighbour or neighbours by pivot means allowing the plates individually to rotate between a position in which they are stacked one beside another and one in which they extend edge to edge in a vertical line, a flexible wire cable 23 passing from end to end of the series for controlling such rotation. The plates 16a, 16b, 16c ... 16x, 16y, 16z are, in the embodiment described, linked to one another by hinge pins 17a, 17b . . . 17x, 17y, the uppermost plate 16a being attached by a hinge pin 18 to the base of a shield <SP>"</SP> plug 14 situated at the upper end of a standpipe 11 leading from the channel 12 while the lowermost plate 16z is attached to a bob weight 21 by a hinge pin 22. The cable 23 is bedded in the bob weight 21 and passes up through the plates 16 by way of slots 27a, 27b, 27c ... 27x, 27y and through the shield plug 14 to a motordriven reel (not shown). The angular position of the plates 16 relative to one another and hence the neutron absorption capacity of the control element depends on the extent of the cable 23 beneath the shield plug 14.
Patent GB-1005468-A (GB)
Title: Process for the preparation of a solid glucose product
IPC: C13K1/06
Filed: 1962-12-17
Abstract: A solid glucose product is obtained by hydrolysing starch in an aqueous medium to a dextrose equivalent of at least 92, evaporating the juice thus obtained to a solids content of 69-80% by weight and allowing the concentrated liquid to solidify without stirring in such a way that expansion can freely occur. Preferably the hydrolysis is carried out in two stages, the first stage being carried out by means of acid or a -amylase and the second stage by a -amyloglucosidase. Alternatively the hydrolysis may be carried out in one stage by means of acid. Specification 849,508 is referred to.
Patent GB-1184340-A (GB)
Title: Improvements in Pillows
Inventor: SMITH FREDERICK THOMAS
IPC: A47D7/00
Filed: 1967-10-21
Abstract: 1,184,340. Head rests for beds. M.S.P. (LUXI-PRODUCTS) Ltd. 21 Oct., 1968 [21 Oct., 1967], No. 47972/67. Heading A4J. A wire pillow frame for an infant's cot has a pair of U-shaped legs a<SP>1</SP>, a<SP>2</SP>, which underlie the cot mattress and thus retain the frame in position. Turkish towelling C may be held taut between the sides of the frame, by means of press-studs. sliding clasp fasteners on tapes. In a modification, an additional frame supports side walls (C<SP>1</SP>, Figs. 3 and 4, not shown).
Patent GB-1459653-A (GB)
Title: Apparatus for supporting and conveying a wound tube having a helical seam
IPC: B21C37/12
Filed: 1974-11-06
Abstract: 1459653 Supporting and conveying a spirally wound tube KURARAY CO Ltd 6 Nov 1974 [7 Nov 1973] 48027/74 Heading F2P Apparatus for supporting and conveying a tube 8 formed from a helically wound strip and having a helical seam, comprises two or more parallel spaced apart shafts, 11, each supporting a plurality of support rollers 12, each support roller having its axis adjustably inclined relative to the longitudinal axis of the shaft 11, on which it is supported. The support rollers 12 are positioned by stop means 13 on the shafts 11 and may be tilted by tilt rollers 14 which abut one side of their respective support rollers. The bore of each support roller 12 has a curved surface (12<SP>1</SP>) (Fig. 5, not shown) the curvature of which depends on the thickness of the roller. Each support roller is adjusted to a tilt position such that its angle of tilt relative to the tube 8 is the same as that of the helical seam of the tube. Tilt rollers 14 are mounted on members fixed to a slide bar 19 movable along a slide 9 and their position relative to the slide 9 is fixed by a bolt 20 which locks the bar 19 relative to the slide 9. Movement of the slide bar 19 along the slide 9 prior to locking by said bolt, moves the tilt rollers simultaneously and each support roller is tilted to the same angle. In a further embodiment (Fig, 8, not shown) resilient members (24) such as springs are incorporated on shafts 11 to help maintain the support rollers 12 in their tilted positions. The tilt rollers 14 may be fitted to a shaft (21) and a threaded portion (23) connects said shaft to a handle (22). By rotating the handle (22) the shaft (21) is moved in a direction parallel to the longitudinal axes of the tube 8 and shafts 11 and dependent on the direction of rotation of said handle, and the angle of tilt of the support rollers 12 is adjusted accordingly. One or more of the shafts supporting the support rollers 12 may be driven and suitable drive arrangements comprising belts and pulleys are disclosed in the Specification.
Patent GB-990780-A (GB)
Title: Variable denier fiber
IPC: D01D5/20
Filed: 1963-12-06
Abstract: A continuous filament yarn having novelty colour effects is comprised of synthetic linear polymer filaments of varying deniers, the larger denier filaments being darker in colour than the smaller denier filaments.  The polymer may be a polyester, a polyamide, a polyolefin or an acrylic polymer.  Many polymer and copolymer compositions are specified.  The yarn is made by spinning a polymer coloured by a dye or pigment through a spinnaret having jet capillaries of different diameters, and twisting the resulting filament, to give a multi-coloured or "heather effect" yarn.
Patent GB-1153795-A (GB)
Title: Process for Obtaining Carbon Disulphide from Trithiane
IPC: C01B31/26
Filed: 1966-10-31
Abstract: 1,153,795. Preparing carbon disulphide from trithiane. GLANZSTOFF A.G. 31 Oct., 1966 [14 Dec., 1965], No. 48724/66. Addition to 1,129,110. Heading C1A. CS 2  is prepared by heating 1,3,5-trithiane with molten sulphur at a temperature between 180‹ and 250‹ C. and preferably in a sealed enclosure in the presence of 0À01 to 1À0% of an anhydrous alkali or alkaline earth metal oxide, hydroxide or salt whose aqueous normal solution has a pH# 9 being used. The mixture of CS 2  and H 2 S formed is then separated. Compounds which may be used as catalysts are alkali or alkaline earth metal oxides, hydroxides, carbonates, phosphates, borates, vanadates molybdates, aluminates, alcoholates, phenolates and acetylacetonates having a pH in the required range.
Patent GB-1328685-A (GB)
Title: Method and apparatus for feeding strip material to presses
IPC: B21D43/11
Filed: 1970-10-14
Abstract: 1328685 Feeding webs CEGEDUR GP 14 Oct 1970 [16 Oct 1969] 48772/70 Heading B8R  Metal or plastics strip Q, Fig. 1, is fed to a press P such as a cutting, die or extrusion press, by a pair of reciprocating grippers AM, BM, one situated upstream and the other downstream of the press, and is held stationary during the return movement of the grippers AM, BM by a pair of simularly positioned stationary grippers AF, BF, the gripper BF being opened before the grippers AM, BM close on the strips to effect feed and the gripper AF being opened after the grippers AM, BM close. The arrangement allows for any expansion of the strips caused by the operation of the press. The feeding devices are operated from the crank-shaft 1 of the press which, in one embodiment, Fig. 3, drives a shaft 17 through gears 11, 12, shaft 13 and universal joint 16. A cam 22 on the shaft 17 engages follower rollers 23, 24, one of which is spring-biased, on a slider 26 connected by a link 27 to a carriage carrying one of the reciprocating grippers, the carriage of the other gripper being connected by a link to the first carriage, so that the two carriages move in unison. The pivot 28 of the lever 27 may be adjustable to vary the stroke of the carriages. The grippers, constructed as described below, are fluidpressure operated, and an electric switch 29 on the shaft 17 controls the admission of fluid pressure to the grippers to close them in the sequence set out above. In another embodiment (Figs. 8, 9), a crank disc (542) with an adjustable throw is used to reciprocate the carriages of grippers AM, BM, and a shaft (63) driven from the shaft 1 carries cams (67) controls the opening and closing of the fixed grippers AF, BF, and also operates rotary distributers 68 effecting operation of the reciprocating grippers AM, BM. Gripper construction.-Each gripper, Fig. 2, comprises an adjustable fixed jaw 41 and a movable jaw 42, the latter being moved to open position by springs or fluid-pressure means and closed by fluid pressure acting on a piston 431. Transverse guiding devices.-One edge of the strip Q is engaged by two spaced-apart fixedaxis rollers (72, Fig. 10) opposed to which are two spring-pressed rollers (73, 74) engaging the opposite edge of the strip.