baber/WOPTO huggingface dataset:
Patent GB-790983-A (GB)
Title: Improvements in or relating to mineral-mining machines
IPC: E21C27/02
Filed: 1956-09-05
Abstract: 790.983. Mineral-mining machines. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI. GEB. Sept. 5, 1956 [Oct. 14, 1955], No. 27120/56. Class 68(1) In each end of a winch housing 2 of a mineral-mining machine is supported a spindle on which is mounted for rotation about the axis of the spindle 5 a pair of arms 11, 12 carrying a cutter unit comprising a motor 10 secured between said arms 11. 12 and a cutter drum 3 rotatably mounted in the arm 12 and driven from the output shaft of the motor through step down gearing situated within the drum. The arms 11, 12 are pivoted about the axis of the spindle 5 by horizontally movable pistons 8 disposed within the housing 2. The shaft of the motor is eccentrically disposed of the spindle of the drum and the drums 3 are so driven as to be contrarily rotating. A conveyer 15 disposed between the drums is driven from the winch motor that drives a sprocket engaging a fixed chain extending along a mineral face. Specification 704,681 is referred to.
Patent GB-482673-A (GB)
Title: Improvements in machines for cutting grass, bamboo, cane and the like, for example in the paper-making industry
IPC: D21B1/06
Filed: 1936-10-07
Abstract: 482,673. Shredding bamboo. MILNE, S. Oct. 7, 1936, No. 27181. [Class 96] [Also in Group I] In a bamboo-cutting machine of the type described in Specification 240,737, [Class 96], in which there are provided pairs of rotary cutters with overlapping teeth and rotary clearers revolving between the cutters, the teeth of the cutters are convex, arched or ridged transversely so as to exert a bending and breaking action on the bamboo prior to cutting, and a reciprocating presser member driven through a slip friction device is provided for feeding the bamboo. Lengths of bamboo are fed singly by a conveyer i to a shoot h into which the bamboo falls while a presser member d reciprocated by cranks f, is at its higher position (as shown in Fig. 1) ; the downward movement of the presser forces the bamboo against the overlapping cutters a mounted on shafts b of which one is positively driven through gearing n from an electric motor, while the other revolves freely. The teeth a<1>, Figs. 4-7, have a radial or slightly hooked cutting edge, which is made convex transversely as shown in Figs. 5-7. The conveyer and the presser member are driven by chains l, m, respectively from toothed wheels k connected through a friction slip device to the shaft b, so that when the pressure under the presser member d exceeds a predetermined value, the rate of movement of this member and of the conveyer is slowed down relatively to that of the cutters. Specification 209,608, [Class 96], also is referred to.
Patent GB-228253-A (GB)
Title: Improvements in or relating to spring mattresses
IPC: A47C23/053
Filed: 1923-10-30
Abstract: 228,253. Heal, H. Oct. 30, 1923. Spring surfaces. - Helical springs with their upper coils linked or otherwise connected to each other and to the mattress or seat frame, have their lower ends mounted on a flexible support which is hung by springs from the main frame. As shown, the flexible support consists of a wire mesh 13 with the lower ends of the springs 11 secured to it at the crossing points. Alternatively, wooden or metal laths or strips may replace the wires forming the mesh. The ends of the mesh elements may be individually hung by springs 14 from the mattress frame, or the whole flexible support may be enclosed in an open frame hung in the same manner. Links, cords or wires, or the form of interconnection shown in Specification 177,992, may be used to join the upper ends of the springs 11, and the marginal springs may be connected to the mattress frame by coiled springs.
Patent GB-1113201-A (GB)
Title: Improvements relating to tape transport mechanism in magnetic tape transducers
IPC: B65H23/02
Filed: 1965-06-28
Abstract: 1,113,201. Guiding record tapes. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 28 June, 1965 [15 July, 1964], No. 27242/65. Heading G5R. A magnetic recording tape is centred by running over two rollers 3, 4 whose axes are slightly inclined. A straight roller may be interposed between the inclined rollers (Figs. 3 and 4, not shown). In order that the tape may be reversed, two sets of guide rollers oppositely inclined may be mounted on opposite ends of an arm pivoted at its centre and arranged so that the set of rollers appropriate to the direction of the tape is brought into use, Fig. 6 (not shown), or the inclination of the axes may be variable, Fig. 7 (not shown). In another embodiment, Fig. 8, the rollers are replaced by two balls 21, 22 mounted in square frames whose outer surfaces 23, 24 have a higher coefficient of friction than the inner surfaces 25, 26.
Patent GB-758664-A (GB)
Title: Improvements in and relating to a heat treated malleable cast iron and processes of manufacturing the same
Inventor: BERG CLAES
Filed: 1953-10-05
Abstract: A process for the manufacture of heat-treated malleable cast iron comprises preparing a melt with such a total content of carbon and silicon that flake graphite would be precipitated in castings with a section thickness of more than 30 mm., adding a metal of the group Mg, Ce, Ca, Be, Sr and Ba retarding the decomposition of cementite, preparing a casting consisting of a white cast iron free of flake graphite, annealing the casting until all the cementite is decomposed and free carbon is precipitated in the form of both rounded, dense particles and temper carbon, reheating the casting and maintaining it at between 850 DEG  and 950 DEG C. until all the ferrite is combined with some of the free carbon to form austenite but only so long that the austenite is prevented from being completely saturated with carbon, and cooling the casting to obtain a matrix free of free cementite and other carbides.  The material may subsequently be tempered, preferably at 350 DEG -450 DEG C.  Preferably the melt contains 2,1-2,9 per cent C and silicon varying inversely between 1,6 and 0,8 per cent, the agent retarding cementite decomposition is Mg which has been alloyed to increase its specific gravity so that it may sink in the melt e.g. 12-22 per cent Mg, 25-35 per cent Si, 40-50 per cent Fe and 10-15 per cent Cu to which may be added 0,1-0,2 per cent Ce although Ce may be entirely substituted for Mg, the annealing is preceded by 5-10 hours at 300 DEG -350 DEG C. to remove hydrogen and the castings, during the annealing, are packed in closed containers with charcoal which binds the oxygen in the air.  In the example a melt is prepared containing 2,4 per cent C, 0,8 per cent Si, 0,03 per cent P, 0,03 per cent S, 0,18 per cent Mn and the rest iron, an alloy consisting of 17,8 per cent Mg, 0,2 per cent Ce, 30 per cent Si, 12 per cent Cu and 40 per cent Fe is added before pouring in such amount, suitably 0,8-1,0 per cent that after the loss of Mg and Ce by burning about 0,05 per cent thereof remains in the poured melt, the castings, after freezing, are allowed to cool in the air, are then heated to 350 DEG C. and held at this temperature for 8 hours and thereafter the temperature is raised in 2 1/2 hours to 950 DEG C. and maintained for 25 hours, lowered to 760 DEG C. in 4 hours and to 650 DEG C. in 22 hours, and finally the casting is cooled in the air, reheated to 900 DEG C., quenched in cold water and tempered at 400 DEG C. for 40 minutes.  Cast irons so produced are stated to be well suited to wear by earth.
Patent GB-788396-A (GB)
Title: Means for indicating the unbalance of rotating bodies
Inventor: RIEDEL ALBRECHT
IPC: G01M1/22
Filed: 1954-09-21
Abstract: 788,396. Measuring instruments. VEB. GERATE - UND REGLER - WERKE TELTOW. Sept. 21, 1954, No. 27281/54. Class 37. [Also in Group XXXVIII] A meter for measuring the magnitude and phase of an A.C. voltage relative to a reference voltage of the same frequency comprises four symmetrical field coils 17 fed with the reference voltage to produce a rotating magnetic field, and a moving coil 18 mounted on a ring 19 secured to the base 22 by an elastic member 24, and fed with the signal voltage. Interaction between the rotating field and the A.C. in coil 18 causes the ring 19 to tilt by an amount determined by the magnitude of the moving-coil voltage and at a phase angle determined by the relative phase angles of the two voltages. The tilt can be indicated by a beam of light reflected from a mirror 29 fixed to the ring 19 on to a circular ring scale.
Patent GB-831906-A (GB)
Title: Method of manufacturing panels and panel so produced
IPC: B32B27/00
Filed: 1957-08-30
Abstract: Decorative panels, which are resistant to heat, are produced by a method which comprises applying to a carrier base sheet one or more layers of a pigmented synthetic resin varnish, to form a pattern, design or solid colour thereon, baking said layer or layers and thereafter hot-pressing the said coated carrier base sheet to a protective sheet impregnated with a thermosetting synthetic resin, which protective sheet is transparent and is, by such hot-pressing operation, strongly adhered to the carrier base sheet.  The pigmented synthetic resin varnish is a pigmented solution of both a polyester resin and an aminoplast, e.g. a urea formaldehyde resin, and preferably includes a melamine-formaldehyde resin.  The polyester resin is a condensation product of a dicarboxylic acid such as phthalic acid and a polyhydric alcohol such as glycerol, i.e. an alkyd resin. The base sheet may be a plate formed of bonded wood fibres, wood splinters, asbestos fibres, glass fibres or natural fibrous cellulose bonded as pulpboard.  The pigmented synthetic resin varnish may be applied by spraying, rolling on, or screen printing, and more than one coat may be applied.  It is then baked, e.g. in convection furnaces, by infra-red radiation or by electric high-frequency energy.  Each coat may be roughened by grinding before the application of the next.  A design may be produced by moving over the surface two or more spray guns spraying different colours in the desired pattern.  The pigmented synthetic resin varnish may contain in addition to pigments, fillers such as powdered mica, silica gel, pumice powder, silica or that known as "Asbestine" (Registered Trade Mark) to form a rough surface.  If the base material is sufficiently thick, panels according to the invention may be used as table tops without reinforcement, being equipped only with a frame and the necessary legs.  Specification 684,085 is referred to.
Patent GB-535393-A (GB)
Title: Improvements in or relating to apparatus for controlling the flow of pressure liquid
IPC: G05D16/10
Filed: 1939-10-09
Abstract: 535,393. Valves. VICKERS, Inc. Oct. 9, 1939, No. 27459. Convention date, Nov. 21, 1938. [Class 135] A valve for controlling the flow of pressure liquid (oil) independently of changes of viscosity comprises a housing having a pressure inlet control valve 13, which is preferably of the type described in Specification 399,609, and a variable outlet control valve, such as a rotary cylindrical valve 16 having a sharp-edged opening 17 of variable cross section and relatively small length in the direction of flow of the fluid. The small length is of the order of one eighth of an inch. A valve with an iris diaphragm aperture may replace the valve 16, or a valve, as shown in Fig. 4, in which a gate G varies the outlet, is formed of plates of not more than one eighth of an inch in thickness. The valve 16 may have a U-shaped slot 21 as shown in Fig. 2.
Patent GB-363318-A (GB)
Title: Improvements in or relating to the cleansing of the felts of paper making machines
IPC: D21F1/32
Filed: 1930-09-15
Abstract: 363,318. Cleaning felts of papermaking machines. HARRIS, J. L., Thomson, New York, U.S.A. Sept. 15, 1930, No. 27569. [Class 96.] The nozzles of a felt-cleaning apparatus for paper-making machines are directly reciprocated above the felt by a fluid-operated reciprocating engine. Water from a flexible pipe 57, Fig. 2, passes through pipes 20, 23 and is discharged from jets 24, the pipes &c, being mounted on rollers 14 in a frame 11, preferably of slotted tubes, and being reciprocated across the felt by an engine comprising a cylinder 26, piston, and connecting- rod 18 attached to an arm 17 fixed to the pipe assembly 20. The valve 36 supplying water or compressed air to the cylinder 26, is actuated by shoulders 58, 58<1> on the pipe 20 engaging a pivoted arm 48 balanced by a weight 55, the weight aiding valve actuation through links 45 carrying a roller 46<1> in a slot 47. The valve 36 connects ports 33, 33<1>, Fig. 5, alternately to the supply pipe 41 and to the drain pipe 42, the connection from the port 33<1> to the pipe 42 including a pipe 43.
Patent GB-362541-A (GB)
Title: Improvements in electrical transmission gearing
IPC: H02K51/00
Filed: 1930-09-16
Abstract: 362,541. Electromagnetic clutches. TOBLER, W. P., 17, Avenue Auguste Jassogne, Villa Sans Gene, Waterloo, Belgium. Sept. 16, 1930, No. 27609. Convention date, Sept. 18, 1929. [Classes 35 and 38 (iv).] The driven member 6 of an electromagnetic clutch is provided with two windings 6a, 6b; the winding 6a is excited from a separate source 7 and the winding 6b receives current from the armature 3 of the driving member. The windings are so arranged that the two fields oppose each other, thus checking an excess of current in the armature 3 if the clutch is overloaded mechanically. The current from the winding 6b passes to an outer winding 10 and a fixed winding 11c to generate a further driving torque.
Patent GB-1137490-A (GB)
Title: Improvements in and relating to the monitoring of control systems
Inventor: BARLTROP RICHARD KENNETH
IPC: B64C13/00
Filed: 1965-06-30
Abstract: 1,137,490. Aircraft controls. ELLIOTT BROS. (LONDON) Ltd. 28 June, 1966 [30 June, 1965], No. 27627/65. Heading B7G. [Also in Division G3] A control system for operating an aircraft elevator 19 includes a control lever 11 movable to cause through a first control path corresponding operation of an actuator 15 connected to the elevator 19, and a comparator 30 adapted to compare a demand input signal from a pickup 12b associated with the lever 11 with an actuator position signal from a pick-up 20b, whereby if the error between the signals is above a predetermined amount the comparator 30 operates a changeover switch 24 to discontinue control through the first control path and establish control through a second control path also operated by the lever 11. The first control path comprises an amplifier 13 fed with electrical demand signals from a pick-up 12a and with feedback signals from a position pick-up 20a, the output being supplied to a torque motor for operating the opening of a valve 14 controlling the hydraulic supply to the actuator. Other features of the first control path are as described in Specification 1,131,854. While the first control path is operating satisfactorily, the second and similar control path (indexed reference numerals) is rendered inoperative by a by-pass valve 22<SP>1</SP>. When the changeover switch 24 is operated by the comparator 30 the by-pass valve 22<SP>1</SP> is caused to close and the bypass valve 22 of the first control path is opened. The changeover switch 24 also causes opening of a switch S1 connecting the output from the amplifier 13<SP>1</SP> to a servomotor 26 having output connections to the amplifier 13<SP>1</SP> and the associated comparator 30<SP>1</SP>. The function of the servomotor 26 is to ensure that the output from the amplifier 13<SP>1</SP> is zero at changeover, and that the comparator 30<SP>1</SP> does not immediately cause re-opening of the by-pass valve 22<SP>1</SP> due to the fault condition initiating the changeover being detected by the comparator 30<SP>1</SP>. In a modification, Fig. 2 (not shown), the switch S1 causes interconnection between the input and the output of the servo motor 26 and thus the error which occurs due to the signals stored in the servo motor before changeover is eliminated.
Patent GB-152990-A (GB)
Title: Process for increasing the yield of chromium in the aluminothermic production of carbon-free ferro-chromium or multiple alloys thereof from chrome-iron ore
IPC: C21C7/00
Filed: 1920-09-29
Abstract: 152,990. Goldschmidt Akt.-Ges., T. Oct. 14,1919, [Convention date]. Thermo-aluminic and like mixtures and metalextracting processes.-Carbon-free ferro-chromium is obtained bv the thermo-aluminic reaction of a mixture of chrome iron ore, aluminium or other reducing metal, and oxides of iron, preferably roll scale. Oxides of other metals, such as cobalt, nickel, tungsten, molybdenum, and vanadium, may be added to produce the corresponding alloys.
Patent GB-763865-A (GB)
Title: Improvements in or relating to production of radioactive iodine 131
Inventor: EVANS CHARLES CHARLTON
IPC: C01B7/14
Filed: 1954-09-27
Abstract: 763,865. Purifying radio-isotopes. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Sept. 27, 1955 [Sept. 27, 1954], No. 27780/54. Class 39(4). I<131> is recovered from neutron-irradiated tellurium by distilling off the iodine. Tellurium dioxide in the form of a precipitated compound is irradiated with a flux of 1012 thermal neutrons/ square centimetre per second for 14 days in a silica vessel. The vessel is then heated in a stream of oxygen to 650‹C. and the iodine is collected in bubblers containing 0À01N aqueous caustic soda, subsequently treated with sulphur dioxide. The tellurium dioxide can then be further irradiated. The Specification also refers to the recovery of I<131> by oxidation with chronic and sulphuric acids, then reducing with oxalic acid and distilling off the iodine.
Patent GB-1007736-A (GB)
Title: Improvements in and relating to internal combustion engines
Inventor: MAY CLAUD HECTOR
IPC: F02B1/04
Filed: 1962-07-19
Abstract: 1,007,736. Reciprocating pumps; fuel injection systems. WALKER MANUFACTURING CO. July 19, 1962, No. 27882/62. Headings F1A and F1B. A pump 910, Fig. 1, disposed about the stem of an air intake valve 922 injects rich fuel-air mixture into the intake manifold immediately upstream of the intake valve 2 Figs. 1 and 3, the rich mixture is supplied by a carburetter 928 through a pipe 933 and flap valve 1150 to a pump space 1121 formed around the cylinder air inlet valve 922. The pump is formed by a sleeve 994 fixed to the valve stem and reciprocating in a cylinder 1102. A sleeve valve 984 on the valve stem controls the pump outlet port 982, the compressed charge in the space 1121 being forced through passages 982, 965, into the air entering the cylinder when the sleeve valve 984 opens on the opening movement of the valve 922. The air throttle valve 926 is controlled conjointly with a fuel metering valve 930 in the carburetter 928. In a modification the pump is actuated by an overhead cam-shaft.
Patent GB-383710-A (GB)
Title: Improvements in and relating to variable speed transmission mechanism
IPC: F16H9/16
Filed: 1931-10-08
Abstract: 383,710. Expanding pulley gearing. BARKER, J. E., 29, Gaythorne Street, Bradford, Yorkshire. Oct. 8, 1931, No. 27933. [Class 80 (ii).] Expanding pulley gearing comprises two pairs of coned pulley discs 4, 4a arranged so that when the members of one pair are closed in those of.the other are separated. The levers 11 which operate both pulleys are pivoted on pins 12 on blocks 21 carried at an adjustable distance apart by a right-and-left-handed screw 22. The pins 12 are encircled by loose hexagonal sleeves which engage slots 19 in the levers 11. The levers are simultaneously turned about their pivots by rotating a right- and-left-handed screw 15 engaging nuts 14 connected to the levers by pivoted links 13. In order to keep the tension in the belt constant, the levers 11 are also constrained to move longitudinally about their pivots so that the effective lengths of their arms on each side of the pivots are altered and a differential movement of the pulley discs obtained. For this purpose pins 31 secured to the ends 33 of the levers are surrounded by hexagonal sleeves which slide in slots 30 in fixed brackets 29, the slots being inclined to the path which the pins 31 would describe if the levers were fixed on their fulcra. The levers 11 press on thrustbearings 7 on the pulley-discs through pivoted thrust-plates 9, which engage ribs 8 on the bearings.
Patent GB-459248-A (GB)
Title: Improvements in electric lamps
IPC: H01K1/46
Filed: 1935-10-10
Abstract: 459,248. Two-part couplings. HAYASHI, M., 85, 2 Cuome, Ichibehcho, Azabu-Ku, Tokio. Oct. 10, 1935, No. 27959. Convention date, Oct. 10, 1934. [Class 38 (i)] A cap or base for an electric incandescent lamp comprises a main shell 1 with a recessed or countersunk upper portion 11 adapted to receive an insulating disc 4 to which two contact plates 3, 3<1> are attached by means of prongs 5 engaging slots 6 in the disc, , a second insulating disc below the recessed top 11 of the shell being secured in position by eyelets 14, 14<1> passing through the contact plates. The contact plates are disposed above apertures 10 in the top 11, disposed symmetrically relatively to the centre thereof. Rotation of the insulating disc 4 is prevented by providing its edge with notches 7 to engage projections 9 on the shell 1. A metal pin 2 extending diametrically through the shell is secured in position by flattening the portions of it adjacent to the inside wall of the shell.
Patent GB-876916-A (GB)
Title: Improvements in or relating to devices for laterally displacing crop lying on the ground
IPC: A01D78/00
Filed: 1957-09-04
Abstract: 876,916. Side-delivery rakes. VAN DER LELY N.V., C. Sept. 4, 1957 [Dec. 8, 1956], No. 27967/57. Class 6(3). [Also in Group XXV] In a side-delivery rake, of the type having rake-wheels 10-15 floatingly mounted on cranks, such as 16, the wheel plane of each rake-wheel is angularly adjustable. The machine is similar to that described in Specification 876,914 and comprises a frame 1, 2, E-shaped in plan, carrying adjustable beams 4, 5, 6, on the ends of its limbs. A pair of cranks 16, 17, is mounted on each beam and is acted upon by springs such as 18A, 19A, alternately anchored above and below the beam. Each crank terminates in a bearing 27 in which a stub-axle 33 is fixidly but adjustably mounted. The stub-axle is slightly cranked, so that by rotation of it relatively to the bearing the wheel plane of the rakewheel carried by the outer end of the axle, is varied. As shown in Fig. 3, the axle 33 is secured in the bearing 27 by a clip 39 passing through a groove 51, in the axle, alternative grooves 52, 55, being provided at 90 degrees and 180 degrees. In a modification, Fig. 4, the crank 21 terminates in a vertical pivot 56, locking of the stub-shaft being effected by a pin 57 co-operating with an annulus 59. Specifications 876,915 and 876,917 also are referred to.
Patent GB-388697-A (GB)
Title: Improvements in dobby machines for looms for weaving
IPC: D03C1/14
Filed: 1932-10-07
Abstract: 388,697. Loom shedding-mechanism. STAUBLI. H., ST€UBLI, H., ST€UBLI, R., and ST€UBLI, H., (trading as ST€UBLI & CO., GEB.), Horgen, Zurich, Switzerland. Oct. 7, 1932, No. 27998. Convention date, Nov. 20, 1931. [Class 142 (i).] To reduce friction, exchangeable members such as steel rings &c. e, Fig. 2, are placed on the pins d of the shaft lifting levers a, b of a dobby, and on the pins g of the vibrating levers h, the pins receiving the usual connecting rods i, c. In a modification, U-shaped segments f, Fig. 4, are fitted closely on the hook-parts of the connecting rods.