baber/WOPTO huggingface dataset:
Patent GB-1354350-A (GB)
Title: Attitude control system and method
IPC: G05D1/08
Filed: 1971-10-13
Abstract: 1354350 Attitude control GENERAL ELECTRIC CO 13 Oct 1971 [14 Oct 1970] 47638/71 Heading G4A The attitude of a body is controlled by (1) calculating the direction of the unique axis p  about which rotation of the body through no more than 180 degrees will alter its attitude to a desired position and (2) controlling means for altering the body angular velocity component with respect to fixed axes in the body so that the altered body angular velocity has a component along the unique axis which has the same sense as the unique axis. Considering the angular momentum of the body, if I is the inertia tensor, w is its angular velocity and h is the angular momentum of controllable rotational parts of the body, to alter its angular velocity to w d  (where this vector is in the direction of the unique axis p) the angular momentum of the controllable rotational parts must be changed to h d  where Iw + h = Iw d  + h d , i.e. #h = I(w - w d ). As described from the components w x , w y , w z  of the angular velocity of the body referred to axes fixed with respect to the body and Euler parameters a 1 , a 2 , a 3 , a 4  representing the inertial attitude of the body relative to axes fixed in the solar system, the instantaneous attitude of the body may be found by continuously solving the equation If the desired attitude of the body relative to axes chosen by an operator is represented by Euler parameters m1, m2, m3, m4, the components p x , p y , p z  of the unique axis may be found by solving the equation the vector p having the form sign (e 4 ). After multiplication by a factor k which determines the gain of the system and subtraction from the components w x , w y , w z  the resulting components are multiplied by the inertia tensor to derive the components h x , h y , h z  of #h. For each of a plurality of control gyroscopes the components are multiplied by a matrix G which transforms the components of #h into components with respect to the gyroscope mounting. Since the gyroscope has no capacity to change angular momentum parallel to its gimbal axis two orthogonal components h i3 , h i2  are derived which are used to apply a torque to the gyroscope to cause it to precess to contribute the required angular momentum. The actual orientation of the gyroscope in its gimbal may be represented by 0 and analogue voltages proportional to h i2 , h i3  (where h i2 =r cos # and h i3 =r sin #) are applied to two sin and two cosine potentiometers to derive output signals r sin # cos #, r sin # sin #, r cos # cos #, r cos # sin #. Subtractors derive signals representing r sin (# - #) and r cos (#-#) which are used to derive a signal of one sign when #-# is of one polarity and the opposite sign when #-# is of the opposite polarity to control the torque motor of the gyroscope.
Patent GB-1330484-A (GB)
Title: Bearing for supporting heavy rotatable machine elements
IPC: F16C32/06
Filed: 1970-10-07
Abstract: 1330484 Bearings SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 7 Oct 1970 [9 Oct 1969] 47734/70 Heading F2A A rotatable member, e.g. the drum of a rotary stone crusher, is supported by a plurality of individual hydrostatic bearing units acting on a bearing ring of the member and mounted so as to be self aligning with respect to the envelope of the bearing ring, the fluid supply system being such that constant bearing clearance is maintained. The member is supported by two types of bearing unit 14, 15 arranged symmetrically about the centre of the member as shown in Fig. 3. Both types of unit have a base 16 having at its upper end a cylinder in which is located a piston 17 integral with the part which engages the bearing ring 13. The piston has a spherical surface to allow angular movement relative to the cylinder thereby providing for self alignment with the bearing ring. The piston is allowed to pivot on a ball 25 seated in the base 16. Bearing fluid is supplied to the units by independently driven pumps 31, 32, 33, 34 via ducts 19, and thence to the bearing surface via ducts 22. In the outer bearing units 15 fluid is also supplied via duct 30 to a cylinder 26 where it acts on a piston 27a attached to a rod 28. When fluid is supplied the rod is raised, lifting the ball 25 from its seat, thereby raising the upper bearing part. The cylinder 26 in unit 15 communicates with a similar cylinder in unit 14 via duct 29. The piston 27 in unit 14 has a smaller diameter than that of piston 27 and therefore the rod 28 is raised to a lesser degree than the rod in unit 15. Piston 27 is, however, permitted a larger stroke than piston 27a. If the rotatable member is subjected to uneven load, the clearance between the bearing ring and one of the outer units is decreased, thereby impeding outflow from the bearing pad 21. The consequent increase in the supply duct is communicated to the cylinder 26 in unit 14 and causes further raising of the rod 28, thereby lifting the bearing pad of unit 14 to counteract the increase in load on the one side of the bearing.
Patent GB-1273016-A (GB)
Title: Roll changing apparatus for a four-high rolling mill
IPC: B21B31/10
Filed: 1969-09-30
Abstract: 1,273,016. Rolling mills. HITACHI Ltd. 30 Sept., 1969 [2 Oct., 1968], No. 48113/69. Heading B3M. Roll changing apparatus for a four-high mill incorporates a work-roll changing truck 19 which is movable in the direction of the roll axes, and a backing-roll changing truck 26 which normally supports the truck 19 and is movable in a direction transverse to the roll axes. The truck 19, Fig. 4, has two sets of rails for supporting work-roll assemblies 4<SP>1</SP>, 5<SP>1</SP> or spacers 45 associated with the backing-rolls. The truck 26 has sets of rails 29 and supports 27, 28 for supporting the truck 19 and backing- roll assemblies. To change the work rolls 4, 5, the rolls are first supported by vertically movable rails 14 in the mill stand, and are then drawn by a traction car 18 on to aligned rails on the truck 19. The truck is shifted laterally, by moving the truck 26, until a replacement set of rolls 4<SP>1</SP>, 5<SP>1</SP> is aligned with the rails 14. The new rolls are then inserted in the mill. If the backing-rolls 2, 3 are also to be changed, a spacer 45 is shifted from the truck 19 to a position between the rolls in the mill. The rolls 2, 3 are then supported by a sled 35 in the stand, and are movable on to the truck 26. In order to allow the rolls to be pulled on to the truck 26, the truck 19 has to be pulled from the truck 26 on to aligned rails beneath a cover 20. The cover has first to be raised by cylinder 42 to accommodate the truck 19. The truck 26 is shifted laterally until a replacement set of backing rolls 2<SP>1</SP>, 3<SP>1</SP> can be inserted in the stand.
Patent GB-1534560-A (GB)
Title: Die holder for press
IPC: B21D37/14
Filed: 1976-11-18
Abstract: 1534560 Coining L SCHULER GmbH 18 Nov 1976 [26 June 1976] 48114/76 Heading B3Q In a horizontal coining &c. press the die 9 is capable of endwise movement in a die holder comprising a lower part 5 fixed to a frame 1 and an upper part 6 detachable from the lower to release the die. Levers 11 pivoted on part 5 carry spring washers (12) for clamping against projections on the part 6.  Springs 22 bear against a washer 23 acting on a stamping ring 24, and the die 19 is fixed to a carrier 13 by a nut 18.
Patent GB-1262179-A (GB)
Title: Thread storage and delivery device for textile machines
Inventor: ROSEN KARL ISAC JOEL
IPC: D03D47/00
Filed: 1969-10-02
Abstract: 1,262,179. Thread unwinding apparatus. K. I. J. ROSEN. 2 Oct., 1969 [14 Oct., 1968; 7 March, 1969], No. 48463/69. Heading D1J. In the thread storage and delivery device shown the thread F from the spool 3 is fed tangentially onto, and looped at least once around, a friction drive surface 9a of a driven drum 9. The thread drawn off by the drive surface 9a is fed via a pivoted hook 10 to a downwardly tapering cone surface 9b and thence to a storage cone section 9c on which the descending turns of yarn may accumulate in multiple layer form K. From the resulting single turn or multiple layer the yarn is drawn off axially.  When the winding-on speed is greater than the draw-off speed of the thread, the multiple layer form K grows so rapidly that the slide cone 9b is no longer able to push the turns of thread downwardly. The maximum diameter of the slide cone 9b is greater than the diameter dl of the friction drive surface 9a. This ensures that when the turns of the thread are no longer sliding down the cone 9b, the thread is wound up by the cone 9b at a greater rate than it is supplied by the drive surface 9a. This results in the yarn loop around the hook 10 being tightened, as in Fig. 1, with the result that the hook 10 rocks and actuates a switch 6 to stop the motor driving the drum 9. When, subsequently, sufficient turns have been taken off via the eyelet 17, the loop around the hook 10 becomes slack, as in Fig. 2 (not shown), and the switch 6 is able to revert to the setting in which the motor driving the drum 9 is energized. In Fig. 3 (not shown) the drive surface 9a is in the form of a groove and the hook-shape 10 is re-placed with an eye. There is a disc brake 14 for the thread F between the spool 3 and the friction drive surface 9a.
Patent GB-1404177-A (GB)
Title: Method of treating alumina
IPC: C01F7/02
Filed: 1972-10-20
Abstract: 1404177 Low density alumina CONTINENTAL OIL CO 20 Oct 1972 [20 Oct 1971 20 April 1972] 48516/72 Heading C1A Alumina having a loose bulk density (LBD) of 7À5-25 lb./ft.<SP>3</SP>, a pore volume of 1À0-2À75 cc./g. and a surface area of 275-400 m.<SP>2</SP>/g. is made by admixing an aqueous slurry of alumina with an organic solvent capable of forming an azeotropic mixture with water and drying to remove the water with the organic solvent and recovering the alumina so produced. The alumina slurry may contain up to 32% by wt. alumina and may be produced from the hydrolysis of an aluminium alkoxide. The organic solvent is preferably an aliphatic alcohol containing from 2 to 4 carbon atoms, preferably ethanol or n-butanol.
Patent GB-965980-A (GB)
Title: Amalgam decomposer
IPC: C25B1/42
Filed: 1962-12-28
Abstract: An amalgam decomposer comprises a container having a bottom, a lower part, and an upper part, said lower part having a smaller cross-sectional area than the upper part, to which it is joined by a substantially horizontal shoulder, the container having amalgam and water inlets, and outlets for hydrogen, caustic and mercury; there being disposed in and substantially filling the lower part of said container, a movable upper perforated pressure plate and a fixed lower perforated pressure plate with a bed of graphite granules between said plates, said lower plate being supported above the bottom of the container on pedestals to form a chamber between the plate and the bottom, and said upper plate having a plurality of spaced anvils extending upwards which pass through spaced weirs in an amalgam distributer plate and contacting adjustable means in a removable cover to the container for urging the pressure plate on to the graphite bed, the weirs being defined by a series of rectangular notches in their peripheries, having a depth less than the height of the top of the <PICT:0965980/C1/1> <PICT:0965980/C1/2> weirs; there being adjustable means to urge the distributer plate into contact with the shoulder.  The apparatus may be used for the decomposition of amalgam formed in the electrolysis of brines, for example of alkali metal chlorides, barium chloride, or sodium sulphate, using a mercury electrode.  Fig. 1 shows an apparatus according to the invention with the container consisting of the bottom 11, lower part 12, and upper part 13 with shoulder 14, lower pressure plate 19 supported on pedestals 20, and upper pressure plate 21 with anvils 23 passing through weirs 27 in distributer plate 25.  Removable cover 15 is fitted with screws 24 engaging with anvils 23 to press the plate 21 on to the graphite bed 18, and with screws 37 to press the distributer plate against the shoulder.  Amalgam enters at 16 and aqueous caustic leaves at 17.  Hydrogen exits at 32. Water is introduced at 38 and clean mercury leaves at 41.  Fig. 4 shows an alternative arrangement of the upper part of the apparatus.
Patent GB-1451696-A (GB)
Title: Internal combustion engine carburettorp
IPC: F02M3/12
Filed: 1974-11-14
Abstract: 1451696 Spray carburetters SOC INDUSTRIELLE DE BREVETS ET D'ETUDES 14 Nov 1974 [21 Nov 1973] 49315/74 Heading F1H An idling mixture passage 1 receives air from an idling air passage 8 also opening to the induction passage 12 downstream of the throttle valve 13 and a screw 10 is adjustable to simultaneously regulate a flow determining cross-sectional area 9 of the passage 8 and the cross-sectional area 28 of the passage 8 where the opening to the passage 1 occurs. Adjustment of the screw 10 simultaneously regulates the outputs of the passages 1 and 8 at idling. The area 9 is smaller than the area 28 so that sonic velocity will occur at area 9 rather than 28.
Patent GB-1364266-A (GB)
Title: Process for the alkylation of the pyridine ring
IPC: C07D213/68
Filed: 1971-10-27
Abstract: 1364266 Alkylation of pyridines MONTECATINI EDISON SpA 27 Oct 1971 [27 Oct 1970] 50034/71 Heading C2C The invention comprises a process for preparing an alkyl- or cyclo-alkyl derivative of a pyridine (including compounds in which a pyridine ring is fused to one or more aromatic ring systems), in which the alkyl or cyclo-alkyl group is in a 2,4 and/or 6 position in the ring, by reaction of the pyridine in aqueous solution with a carboxylic acid of general formula RCO 2 H (R is alkyl or cycloalkyl and has 1-17 carbon atoms) at 40-100 C. in the presence of a catalytic amount of Ag<SP>+</SP> and in the presence of a compound capable of providing persulphate ions, at a pressure of ¢-3 atmos. A preferred reaction is carried out at atmospheric pressure in the presence of ammonium or an alkali metal persulphate. The starting pyridine as defined may be substituted and are exemplified by 4 - cyano - pyridine - ethylisonieotinate; 4,4<SP>1</SP> - dipyridyl; 4 - methylpyridine; 4 - methoxypyridine, quinoline, 2-methylquinoline, 4- methylquinoline and isoquinoline. Exemplified acids RCO 2 H are propionic, isobutyric, pivalic, n-butyric, valerianic and cyclohexanecarboxylic acid.
Patent GB-1291562-A (GB)
Title: Improvements in or relating to the construction of elongated fibre-reinforced synthetic plastics members, such as propeller blades
Inventor: KETLEY GILROY REGINALD
IPC: B64C11/26
Filed: 1968-10-22
Abstract: 1291562 Moulding propeller blades HAWKER SIDDELEY DYNAMICS Ltd 16 Oct 1969 [22 Oct 1968] 50171/68 Heading B5A [Also in Division B7] In a method of manufacturing a propeller blade a longitudinal load-carrying spar 11  built up from synthetic resin material reinforced with longitudinally extending carbon fibres is disposed within a containing shell 12. In the embodiment shown two individual half-blades are separately moulded, without a blade shank or root portion, in a reinforced resin material further reinforced with longitudinally laid carbon fibres and are then bonded together. The blade shank and root are then formed by compressing the protruding ends 19 of the carbon whiskers from both halves of the blade between male and female moulds 20, 21.
Patent GB-1281260-A (GB)
Title: Turntable for cables
Inventor: BOND ERIC NORMAN
IPC: B65H49/26
Filed: 1970-10-22
Abstract: 1281260 Reel stands STANDARD TELEPHONES & CABLES Ltd 22 Oct 1970 50190/70 Heading B8R [Also in Divisions B3 and D1] A turntable 1 for dispensing wire or other materials, e.g. cord from a reel comprises a spindle 3 rigidly mounted on a support 8 and a base 2 rotatable about the spindle in bearings 4, 5, and shaped so that a portion projects into one end of the reel (not shown) and a spring- loaded brake pad 13 which is in continuous contact with a face 10 of the base the pressure exerted by the brake being adjustable by a screw 15. The base is stepped at 6 and 7 to accommodate reels having cores of two different diameters. The base has a cover plate 16 to protect the roller bearings of the table. Alternatively the brake pad is actuated by servocontrolled means so that a constant pay-off tension is achieved automatically.
Patent GB-1350004-A (GB)
Title: Hydraulic shift valve for an automotive automatic power transmission
Inventor: ENOMOTO K
IPC: F16H61/10
Filed: 1971-10-28
Abstract: 1350004 Change-speed control NISSAN MOTOR CO 28 Oct 1971 [29 Oct 1970] 50237/71 Heading F2D Hysteresis decreasing with increase in load and speed is provided in a load-speed sensitive automatic shift-valve in an automotive transmission, by the use of a valve-spool having four lands A0, Al, A2, A3, one, A2, of which not only controls the supply of line pressure Pl to a servo-feed outlet port 20 in its upshifted leftward position, but also, in that position, causes a rightward bias by line pressure Pl, acting on differential lands A1, A2, to be cut off at a port 22 and to be substituted by throttle pressure Pth, which also, in both positions, acts on the differential area between lands A1 and A0. Thus in the downshifted rightward position, the rightward bias force opposing governor pressure Tg is given by Pl(A2-A1)+Pth(A1- A0), whilst in the upshifted leftward position the rightward bias is Pth(A1-A0+A2-A1) = Pth(A2 - A0). The difference between these bias forces is the hysteresis, and is given by (Pl - Pth) (A2 - A1). Fig. 3, not shown, is a graph showing the linear variation of Pl and Pth with throttle opening, the Pl and Pth lines converging with increase in throttle opening. Thus the function Pl - Pth decreases with throttle opening and hence also does the hysteresis.
Patent GB-1160530-A (GB)
Title: Clutch Device
IPC: F16D13/70
Filed: 1966-11-09
Abstract: 1,160,530. Friction clutches. BORGWARNER CORP. 9 Nov., 1966 [3 Jan., 1966], No. 50278/66. Heading F2C. Clutch actuating levers 34 co-operate at their outer ends with an annular spring 76 which opposes centrifugally induced clutch engaging movements of the levers. Each lever is fulcrumed on a cover-plate 30 by means of a strut 56, has an opening 62 receiving a nose 64 formed on the pressure plate 32, and has a surface 69 in rolling contact with a flat surface of the pressure plate. The inner ends of the levers are urged inwardly to a position B by a collar 60 to engage the clutch against the pressure of tangential retractor strap springs (not shown) between the pressure plate and the cover-plate. The spring 76 is rivetted to the cover-plate and in the disengaged position of the clutch may either bear against the levers 34 with light preloading or may have a slight clearance therefrom.
Patent GB-1478118-A (GB)
Title: Inserting terminals in supports
IPC: H05K13/04
Filed: 1974-06-10
Abstract: 1478118 Assembling terminals on circuit boards ELCO CORP 10 June 1974 [8 June 1973] 50366/76 Divided out of 1478116 Headings B3A and B3U The subject matter of this Specification is the same as that described in Specification 1,478,116 but the claims are concerned with disabling movement of the terminal inserting ram if the support is improperly located.
Patent GB-1067959-A (GB)
Title: Tow filament separating apparatus
Inventor: MURAKAMI ZENJI
IPC: B65H51/005
Filed: 1964-12-11
Abstract: The filaments of a crimped tow 1 are separated by nipping the travelling tow at two points, stretching it within the elastic limits of the filaments and then loosening the stretched filaments by instantaneously releasing them successively at one of the points.  At the release point, the tow is passed in an arcuate path under a rotating screw roller 3 so that the filaments are released from the screw 3\sv to enter the groove 3\yF thereof and thereby to be loosened from the tow.  Roller 3 cooperates with a smooth roller 2 covered by a resilient sleeve 2\sv.
Patent GB-1241175-A (GB)
Title: Improvements in or relating to sealing materials
Inventor: JACKSON BARRY SIDNEY
IPC: C09J7/21
Filed: 1967-11-08
Abstract: 1,241,175. Felted fabric reinforced sealant. EVOMASTICS Ltd. 24 Oct., 1968 [8 Nov., 1967], No. 50735/67. Heading D1P. [Also in Division B3] A laminar sealing material which comprises a felted fabric which has been impregnated throughout with a hot melt pressuresensitive adhesive in a molten condition in an amount such that the sealing material will adhere to a smooth dry surface when pressed against such surface at normal ambient temperature. The felted fabric may be formed from natural fibres, such as wool, or a glass fibre mat with or without a bonding agent. The sealant may be a petroleum resin and a plasticizing oil or an ethylene/vinyl acetate resin and a tackifying resin. The sealant is applied to the felt by squeezing the felt between rollers immersed in a bath of the molten sealant. The final weight of sealant to weight of fabric is preferably greater than 4:1 by weight.
Patent GB-1516796-A (GB)
Title: Heat exchanger having a plurality of modules connected in parallel
IPC: F22B37/24
Filed: 1976-12-06
Abstract: 1516796 Steam generation using molten alkali metal STEIN INDUSTRIE SA 6 Dec 1976 [18 Dec 1975] 50808/76 Heading F2A Steam generation using molten alkali metal (e.g. sodium) from a fast nuclear reactor comprises the use of a number of heat exchanger modules, e.g. 1, 2, 21, 22, each feed from a common metal feed vessel 3 via straight pipes 11 and each discharging to a common sump vessel 4 via U-shaped pipes 15, 16, 23, 24. Steam is generated in a nest of tubes extending between tube plates 27, 9 and the metal flows within a casing 13 arranged about the tubes.
Patent GB-1211534-A (GB)
Title: ROTARY FLUID FLOW MACHINE, e.g. AN AIR COMPRESSOR
Inventor: SNELL LEONARD STANLEY
IPC: F04D29/54
Filed: 1966-11-12
Abstract: 1,211,534. Axial-flow compressors; blade fixing. ROLLS-ROYCE Ltd. Nov. 6, 1967 [Nov.12, 1966], No. 50817/66. Headings F1C and F1T. In an air compressor for a by-pass gas turbine engine, stator blades 15 are secured at their radially inner ends to the compressor casing by members 17 the upstream parts of which form shrouds of the blades and the remaining parts thereof forming flexible extensions to accommodate relative radial displacement due to differential expansion between the blades and casing. The flexible extensions form a part of the flow passage through the compressor. One, two or more blades may be connected to each member, the blades being brazed to the members. Casing portions 11, 12 and vane structure 13 are cast as a single unit from aluminium alloy, and the blades are of titanium.