baber/WOPTO huggingface dataset:
Patent GB-1192637-A (GB)
Title: Cooling Tubes for the Walls of Combustion Chambers
IPC: F02K9/64
Filed: 1967-09-20
Abstract: 1,192,637. Heat exchange tubes. BOLKOW G.m.b.H. 20 Sept., 1967 [24 Sept., 1966], No. 42858/67. Heading F4S. [Also in Division F1] A cooling tube for assembly with similar tubes to form a combustion chamber comprises two components each extending from end to end of the tube and respectively forming its sides presented inwardly and outwardly of the chamber when assembled, the component forming the inwardly presented side being a strip of a metal having better heat conductivity than the component forming the outwardly presented side and the latter being a strip of a metal of higher tensile strength than the other metal. The walls of a rocket engine combustion chamber are formed by cooling tubes shaped as shown in Fig. 8 and welded to one another around the longitudinal axis of the engine to form a Venturi-shaped combustion chamber. Each tube is formed of two parts 5, 6 with the part 5 engaging recesses (which may be of re-entrant form) on the part 6 as shown at 13 and joined to the part 6 by welding, soldering or adhesive. The part 6, which forms a portion of the outer wall of the combustion chamber, is of material of high tensile strength, e.g. steel, while the part 5, which is exposed to the hot combustion gases, is of material of good heat conductivity, e.g., copper, to ensure good cooling. The width of each tube in the circumferential direction of the combustion chamber varies in proportion to the diameter of the combustion chamber, the width being a minimum at the throat of the Venturi. The part 6 is of constant thickness, whereas the thickness of the part 5 varies along the length of the part in accordance with variations of temperature in different zones of the combustion chamber. In the region of the combustion chamber throat, heat transfer is assisted by making the central zone of the part 5 thinner than the lateral zones and by roughening the internal surface of the part to promote agitation of the cooling liquid. The part 5 may have external surfaces which are straight in cross-sectional view. The combustion chamber is strengthened by a prestressed binding of wire which is welded at intervals to the chamber.
Patent GB-1493199-A (GB)
Title: Thermosetting compositions based on a bis-imide and a polyurethane
IPC: C08K5/3412
Filed: 1975-10-20
Abstract: 1493199 Curable bis-imide/polyurethane compositions RHONE-POULENC INDUSTRIES 20 Oct 1975 [21 Oct 1974] 42994/75 Headings C3P and C3R A curable composition comprises (A) a bisimide (a) optionally mixed with a monoimide (b), and (B) a polyurethane elastomer, in wt. ratio (B)/(A) of from 1/5 to 4; where (a) is and (b) is D being Y being H, CH 3 , or Cl, m being 0 or 1, and A being a 2-30 C radical. Also present may be an organic peroxide or azo compound as curing accelerator; (B) may be formed from a diisocyanate, an OH-containing polymer, e.g. of MW 1000-12,000, and a coupling agent, e.g. H 2 O, H 2 N-NH 2 , aminoacetic acid hydrazide, a diamine, or a diol. Also present may be #10% wt. of a 2-4 ring aromatic compound which does not boil or sublime at atmospheric pressure below 250‹ C.; this compound prolongs the period during which the compound can be used in the fused state. A solution of the composition, e.g. in an amide solvent may be used for forming films, for glass-fibre laminating prepregs, or for coating polyethylene terephthalate or polyimide film. The composition itself can be used for enamelling or impregnating conductors, or for hot casting. It may be partially cured and used as a moulding powder, e.g. for potting electronic components. The composition may be mixed with carbon black and glass fibre. It may be used, with or without solvent, for gluing substrates, e.g. Al, Cu or steel, or polyester, polyimide, or polyamide-imide films.
Patent GB-1100025-A (GB)
Title: Improvements in or relating to disc gramophones employing a pivoted pickup arm
Inventor: MORTIMER EDMUND WALTER
IPC: G11B3/28
Filed: 1963-10-31
Abstract: 1,100,025. Biasing pick-up arms. GARRARD ENGINEERING Ltd. 23 Oct., 1964 [31 Oct., 1963; 20 Dec., 1963], Nos. 43050/63 and 50347/63. Heading G5R. The inward skating force produced on a pick-up arm due to drag is compensated by an outward force applied to the arm and varying with the radial position of the arm in a similar manner to the skating force. In Fig. 2 the head 11 of the pick-up arm 3 is pivotally mounted on a pillar 10 fixed to the base-plate (not shown) and carries a projecting pin 12 which engages one arm 13 of a bell crank lever pivoted on a horizontal pivot 9 projecting from the pillar 10. The other arm 8 of the bell crank carries a poise weight 7. Thus the moment produced by the weight is maximum at the outermost position of the arm and decreases as the arm moves inwards and raises the arm 8 almost to a vertical position. If a closer approximation to the variation of skating force with radial position is required, the rectilinear surface of the arm 13 may be replaced by a suitable curved surface. The arm 8 may be provided with notches engageable by a ball 17 held in the weight by a resilient ring 19, so that the weight is adjustable along the arm 8 to allow for different stylus pressures.
Patent GB-1099485-A (GB)
Title: Electronic switch arrangement
IPC: H04L25/24
Filed: 1965-10-11
Abstract: 1,099,485. Hall-effect switching circuits. CIT - COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. Oct. 11, 1965 [Oct. 15, 1964], No. 43127/65. Heading H3T. A Hall-effect device feeds a bi-stable circuit, oscillator and rectifier to produce positive or negative signals depending on the polarity of the voltage supply to the device relative to the direction of the magnetic field around the device, the signals serving to render one transistor or another conductive. If the voltage supply is alternating about the potential of point 7, a demodulator is included between the Halleffect device and the bi-stable circuit. In the Figure the magnetic field is set up by a number of control windings 1a-1d on a core 2 and the Hall-effect plate 3 is energized by pulses from a generator 6. The output of the Hall-effect plate is amplified at 9 and passed to a bi-stable circuit 10 which will thus be changed from one state to the other by a reversal of the magnetic field due to the windings 1a-1d. In one state an oscillator 13 is energized to give an output which is rectified by diodes 17, 18, 25, 26 to provide a positive voltage to turn on NPN transistor 23 and a negative voltage to turn on PNP transistor 31. A current path is therefore established between terminals 33 and 34 irrespective of the polarity of the voltage applied between them. At the same time a second oscillator 14 is blocked so that transistors 24 and 32 are cut off and terminal 35 is isolated from terminal 34. In the other state of the bi-stable circuit oscillator 14 is energized and 13 is blocked so that terminal 34 is effectively connected to 35 and isolated from 33. The two oscillators may operate at the same or different frequencies. If the voltages applied to terminals 33 and 35 always have the same polarity relative to 34 the components within the dashed line can be omitted.
Patent GB-950686-A (GB)
Title: Catalytic process for preparing acrolein by oxidation of propylene
IPC: B01J23/18
Filed: 1961-12-01
Abstract: Acrolein is made from a gaseous mixture of propylene and oxygen at elevated temperature in the presence of a catalyst containing either Bi and V or Bi, V and Pinoxide (see Division B1). The acrolein may be made in a fixed or fluidised bed process at temperatures of 300-800 DEG C. The propylene-oxygen mixtures may be diluted with an inert gas or steam. The catalyst may be supported on an inert carrier and may additionally contain one or more oxides of Ti, Mu, Fe, Co, Ni, Zu, Cd, Sn, Pb, Cr and As. Examples are given. Acitaldehyde may be a by-product. Specification 839,808 is referred to.ALSO:In a process for the preparation of acrolein by reacting in the gaseous phase and at elevated temperature, propylene and oxygen in the presence of a catalyst material comprising Bi and V or Bi, V and P in oxide form there is used more than 1 gm. atom of Bi per 3 gm. atoms of V and more than 1 gm. atom of Bi per gm. atom of P (if any).  Additionally the catalyst may contain one or more oxides of Ti, Mn, Fe, Co, Ni, Zn, Cd, Sn, Pb, Cr and As.  The catalyst may be supported on a carrier, e.g. SiC, pumice, silica gel, clay, aluminium phosphate, boron phosphate or alumina. Specification 839,808 is referred to.
Patent GB-1489415-A (GB)
Title: Method for transferring energy by means of a cyclic thermodynamic process
IPC: F03G7/10
Filed: 1974-10-04
Abstract: 1489415 Heat transfer systems; refrigeration FONDATION CUM PLATE 4 Oct 1974 [5 Oct 1973 7 Nov 1973] 43260/74 Headings F4H and F4U A heat transfer device, which may be applied to a heat pump or refrigeration process, comprises a series of coaxial sealed annular chambers 25<SP>1</SP>, 25<SP>2</SP>, 25<SP>3</SP> mounted for rotation about a common axis C-C. The inner wall 81 of the inner chamber 25<SP>1</SP> is secured to an axle 83 mounted in a static housing 85 containing hydrogen and formed with a sealed chamber 83c containing a quantity of liquid and its vapour, e.g. ammonia or propane. Each of the annular chambers contains a medium comprising a substance (A), which, in operation of the device, passes through liquid and vapour states, and a substance (B) different from (A). When the chambers are rotated to create a pressure gradient radially across each chamber, (A) separates from (B) by condensation at one wall of each chamber and combines with (B) by vapourization at the other wall, the vapour of (A) being carried between the two walls by diffusion through (B). Heat supplied to the projecting ends of the axle 83 is transferred to the central wall portion of the axle and thence passes radially outwardly to an outer wall 89 surrounding the annular chambers. Substance (A) may be propane and substance (B) may be a mixture of xenon and sulphur hexafluoride.
Patent GB-1421384-A (GB)
Title: Internally fluid cooled rotatable roll
IPC: B65G39/02
Filed: 1973-09-14
Abstract: 1421384 Furnace conveyer rollers COMBUSTION ENG CO 14 Sept 1973 [18 Sept 1972] 43303/73 Heading F4B A fluid cooled conveyer roller 10 comprises a hollow metal core 12 with open ends 14 and 16, extensions 15 engaging bearings 18, a hollow tube 24 extending a considerable distance into the core and which may be coupled to a supply of cooling fluid and a threaded plug (28, Fig. 3) with an orifice (30) at the other end. For uniform flow through the core interior the crosssectional area of the orifice (30) should be equal to or slightly less than that of the annular passage 26 between the tube 24 and the core. The tube 24 may alternatively be connected to a vacuum pump or the like. The core has around it a series of asbestos washers 20 held under compression.
Patent GB-1328994-A (GB)
Title: Projector
IPC: G03B21/11
Filed: 1970-09-10
Abstract: 1328994 Film-strip projectors MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 Sept 1970 [18 Sept 1969, 5] 43443/70 Heading G2A A projector has a magazine 7 which carries two rows of film 13, 14 and which is indexable in a first longitudinal direction to successively align the frames of one row at projection aperture 27, and, after a lateral displacement, is then indexable in the reverse direction for projection of the second row, the magazine 7 being mounted on a plate 2 and longitudinally indexed between guides 19a, 19b and rollers 24, 25, 26, the lateral shift being provided by moving plate 2 on pins 3a, 3b and slots 4a, 4b. Indexing projections 17, 18 are formed in two rows on magazine 7 for engagement by pawls 57 or 58 carried on a sliding lever 52 which reciprocated by a lever 49 eccentrically pivoted at 48 on gear wheel 37. Actuation of solenoid plunger 47 pivots lever 43 to release a pawl 40 on wheel 37 for engagement with projection 34 on a driven gear 35. Wheel 37 is then rotated once by gear 35 until a notch 38 on the wheel is again opposite the gear. Each row 17, 18 has one less projection than there are frames in the corresponding film so that indexing halts at the last frame. A sensing pin 70 on lever 63 then drops into a recess 11 on the magazine whereby interlocking levers 67, 78 are driven by gear 37 to laterally shift plate 2. The second row of projections are then engageable by indexing pawls.
Patent GB-1444262-A (GB)
Title: Intake duct arrangements
IPC: F02C7/042
Filed: 1972-09-20
Abstract: 1444262 Air intakes for propulsion engines BRITISH AIRCRAFT CORP Ltd 20 Sept 1973 [20 Sept 1972] 43476/72 Headings F1G and F1J The invention relates to a two-dimensional air intake duct for the propulsion engine of a supersonic aircraft, the intake duct shown in Fig. 1 being a known arrangement, the duct shown in Figs. 3 and 4 being a duct in accordance with the invention. The intake duct shown comprises a side wall 1 lying in a plane extending longitudinally of the intake duct, also a side wall indicated at 2 and upper and lower walls. A flow compression means comprising a fixed wedge 3 and an adjustable ramp 4 is provided at the upper side, the wedge 3 having a leading edge 3a which lies in a plane 6 which lies normal to the axis of the intake duct. The ramp 4 is pivotally mounted on the fixed wedge at 5. The side wall 1 has a leading edge 1a and the side wall 2 a leading edge indicated at 2a, the edge 1a being inclined at a smaller angle to the plane 6 than the edge 2a; the edge 1a constitutes a supersonic edge and the edge 2a a subsonic edge. An oblique shock wave is indicated at 9 extending from the leading edge 3a of the wedge 3, the shock wave lying between the leading edges 1a, 2a of the side walls. Further shock waves form as indicated at 9a. The shock waves may in certain conditions fluctuate between the positions shown and positions forward of the leading edge 1a, and the side wall 1 is shaped to prevent this, being shaped so as diverge from the longitudinal plane 7 towards the opposite side wall 2 (i.e. towards the interior of the duct) in a generally rearward and upward (i.e. towards the compression means) direction from the leading edge 1a. The divergence is a maximum where the flow compression means 3, 4 abuts the side wall 1. To compensate for the constriction so formed, the wedge 3 may be cut away as indicated at 11, Figs. 4 and 5 (c). The compression wedge is not necessarily at the upper side - it may be at the lower side or the lateral sides.
Patent GB-1114627-A (GB)
Title: Improvements in or relating to vehicle brake valve mechanisms
Inventor: BOWMER REGINALD MILLIS
IPC: B60T8/18
Filed: 1965-10-13
Abstract: 1,114,627. Fluid-pressure brakes; springs; valves. GIRLING Ltd. 20 Sept., 1966 [13 Oct., 1965], No. 43620/65. Headings F2F, F2S and F2V. In a brake valve mechanism a brake valve member 1 controls the flow of brake fluid to one or more brakes of the vehicle and is under the control of a torsion spring member 7 acting on the valve member, the torsion spring member being composed of a plurality of spring elements 7A and arranged side by side such that when the mechanism is mounted in a vehicle the valve is actuated in accordance with the given vehicle condition, such as the loading of the vehicle. The torsion spring member 7 is located in a collar 9 keyed to one end of a torque tube 8 and the other end of the torsion spring is journalled to a collar 4 fast with an input lever 6 such that rotation of the input lever 6 will be transmitted through the torsion spring 7, tube 8 and an output lever 11 to a valve stem 12 of the brake control valve housing 1. An alternative embodiment is disclosed in the Specification wherein the valve stems of twin control valves are arranged to be acted upon simultaneously by a common output lever 11 through the intermediary of a balance beam. The brake control valve may be in the form of a reducer valve which is interposed in the hydraulic conduit between the master cylinder and the rear wheel brake cylinders such that the valve is normally opened to allow the full master cylinder pressure to act on the rear wheel brake cylinders but at a predetermined pressure depending on the vehicle loading the valve stem moves outwardly to allow the valve to close to cut off the rear wheel brake cylinders from the master cylinder. Instead of the torsion spring being formed of substantially rectangular flat leaves, the torsion spring may be of circular cross-section.
Patent GB-1129399-A (GB)
Title: Crimped synthetic fibres
IPC: D01D5/30
Filed: 1967-09-25
Abstract: 1,129,399. Composite polypropylene filaments. HERCULES Inc. 25 Sept., 1967 [26 Sept., 1966], No. 43537/67. Heading B5B. A composite filament capable of spontaneous crimping (as defined below) comprises at least two components, one of which is unmodified stereoregular polypropylene, and one of which is stereoregular polypropylene containing an additive to modify the crystallinity thereof, and may be made by extruding the components in a mutually adherent relationship, drawing the resultant filament at a draw ratio of at least 2:1, and relaxing the drawing tension. By spontaneous crimping it is meant that crimp develops immediately upon relaxing the tension or when the filament is heated under tensionfree conditions. The crimp may be heat set. The crystallinity reducing additive may be a nucleating agent, e.g. sodium benzoate, or a crosslinking agent, e.g. a bis-sulphonazide or bis-azidoformate such as decamethylene bis (azidoformate). Side-by-side and sheath-core component arrangements are both suitable.
Patent GB-980098-A (GB)
Title: Impact clutch
IPC: B25B21/02
Filed: 1962-11-19
Abstract: 980,098. Impact clutches; shaft couplings. CHICAGO PNEUMATIC TOOL CO. Nov. 19, 1962 [Dec. 19, 1961], No. 43630/62. Headings F2C and F2U. [Also in Division B3] The anvil of an impact clutch is engaged by an axially slidable dog carried by a hammer member surrounding the anvil at the time of impact and supporting the dog under compression between the hammer and the anvil. The shaft 41 of an air motor is splined to a driving plate 61 having driving rollers 72 in arcuate slots 73 engaging arcuate slots 70 extending the length of the bore of a hammer member 63. The end face of the driving plate has a part toroidal groove 99 allowing limited angular movement of a driving ball 93 retained in a transverse plane by a race 95 formed in a cam pilot 58 carried on a shoulder on the end of an anvil member 33. The anvil member 33 is splined to receive a cam sleeve 83 carrying a yoke 81 engaging cylindrical dogs 71 at a reduced portion 76, the dogs 71 being slidable in the grooves 70 of the hammer member 63 to engage concave cylindrical surfaces 79 formed in the anvil member 33. A spring 90 urged the cam sleeve axially to engage a double helical cam surface 96 with the ball 93. The cam sleeve splines have a blank spline such that the peak of the cam may only be assembled in the correct angular position in relation to the anvil surfaces 79 to allow full travel of the dogs axially before impact. When the shaft 41 commences to rotate, free movement to accelerate occurs until the ball 93, the end 101 of the groove 99 and the cam surface 96 make contact. The cam commences to rotate, driving the anvil member 33, and to move axially with the yoke and dogs 71, the dogs being driven through the hammer member 63 and rollers 72. Just after full cam stroke, the dogs impart a blow to the surfaces 79 of the anvil, being supported in compression between the surfaces 79 and the grooves 70. Axial inertia and friction between the surfaces 79 and the dogs hold the peak of the cam clear of the ball momentarily before the spring 90 returns the cam to its original position and disengages the dogs. Operation in the reverse direction is possible, by reversing the motor, due to the length of the groove 99. Specification 980,099 is referred to.
Patent GB-1152080-A (GB)
Title: Securing and Connecting Member for Plate Shaped Structures
IPC: F16B12/00
Filed: 1967-09-26
Abstract: 1,152,080. Connector for plates. W. BENKEWITZ and H. BENKEWITZ [trading as FIRMA H. & W. BENKEWITZ]. 26 Sept., 1967, No. 43666/67. Heading A4H. A connector for connecting plates has the form of a section of a sphere and has a plurality of intersecting slits 3, 4. The slits follow major circles perpendicular to each other and the walls of the slits have ribs 10. The connector is a hollow body. Two connectors (1, 2) are connected together by pins (11, 12) so that their bases define a continuous slit around the connector.
Patent GB-1205647-A (GB)
Title: Antioxidant compositions, their use in polymers and products made therefrom
IPC: C08K3/00
Filed: 1967-09-26
Abstract: 1,205,647. Stabilizing polymers with phenolic antioxidants. GOODYEAR TIRE & RUBBER CO. 26 Sept., 1967 [24 Oct., 1966; 31 July, 1967], No. 43757/67. Headings C3P and C3Q. [Also in Division C4] A non-dissolving antioxidant composition for polymers and soaps comprises (a) at least one phenolic antioxidant for organic polymers (b) at least one neutralizer that will neutralize the oxidation effect of heavy metal ions on organic polymers and (c) at least one reducing agent. The phenolic antioxidant may be 4,4<SP>1</SP> -butylene bis - (3 - methyl - 6 - tertiary butyl phenol); a butylated reaction product of para cresol and dicyclopentadiene; a butylated reaction product of meta-para cresol and dicyclopentadiene; butylated, styrenated meta-para cresol; 2,2<SP>1</SP> - methylene bis - (4 - methyl - 6 - tertiary butyl phenol) and styrenated phenol. The neutralizer may sequester, complex, chelate, make insoluble or adsorb the heavy metal ions and may be hydrated sodium, potassium or calcium silicate; tetrasodium pyrophosphate; tetra potassium pyrophosphate; silica; or the sodium and potassium salts of either tetraacetic acid ethylene diamine or hydroxy triacetic acid ethylene diamine. The reducing agents may be sodium benzyl thiosulphate; sodium, potassium or barium thiosulphate; sodium phosphite; sodium hypophosphite; sodium sulphite; sodium hydrosulfite; sodium nitrite; stannous chloride; sodium formaldehyde sulphoxylate; thiourea dioxide; sodium pyrosulphite; sodium trihydroxy methoxy aluminate; thiocarbonates; glucose; phenylhydrazine; hydroxylamine; phosphorothioates and tris (nonylphenyl) phosphite. The composition may be used to stabilize natural rubber and synthetio rubber. The polymers may be in the form of a latex.
Patent GB-1403007-A (GB)
Title: Method of and apparatus for shirring casings
IPC: B29C53/30
Filed: 1972-09-21
Abstract: 1403007 Shirring sausage casings HOECHST AG 21 Sept 1972 [23 Sept 1971 26 June 1972 (2)] 43776/72 Heading A2B  Sausage casings are shirred by an element which is rotatable about the axis of the casing. The element comprises a cylindrical part 18 and may carry a helical projection 21 which in turn may carry a rotatable wheel (24), see Fig. 3 (not shown), at its shirring end 23. Alternatively the part 18 may carry a plurality of rotatable wheels (28), see Fig. 7 (not shown). The rotatable element forms a helical recess in the casing prior to shirring. Grooved rollers 9, 9' prevent twisting of the casing and lubricant and/or moistening agent is applied through nozzles 10, 10'. The casing is shirred against a backing means 13 through which a counter force K is applied. The inside diameter of the shirred casing may be adjusted by altering the speed of feeding the casing and the speed of rotation of the part 18. The backing means may include a tubular element 30, an opening 33 for compressed air, and gripping jaws 31. Alternatively the backing means 13 may carry a mandrel (7), see Fig. 1 (not shown). The shirred casing can be built up against the backing means without using a mandrel for guidance. A frusto-conical shirring contour may be used. A lubricant and/or moistening agent may be applied to the casing before shirring, through nozzles 10.