baber/WOPTO huggingface dataset:
Patent GB-919063-A (GB)
Title: Slide rule
IPC: G06G1/12
Filed: 1961-01-27
Abstract: 919,063. Slide rules. SANGWIN, G. W. F. Jan. 27, 1961, No. 3280/61. Drawings to Specification. Class 106 (1).  A slide rule for carrying out computations in connection with the loading of oil into ships comprises a basic portion having upper and lower logarithmic scales graduated in cubic feet and tons, respectively, and a slide carrying upper, middle, and lower logarithmic scales, the upper scale of the slide being graduated in terms of cubic feet per ton but numbered in terms of the appropriate specific gravities, the middle scale being a standard logarithmic graduation for converting long or metric water tons into oil tons according to the specific gravity, and the lower scale being graduated in terms of international specific gravity but actually numbered in terms of the appropriate A.P.I. values. A cursor is marked with three lines for reading off in long, metric, or American short tons.
Patent GB-306130-A (GB)
Title: Process for utilising the lost and residual gases produced when liquefied gases of low boiling point are drawn off or transferred from one vessel to another, particularly for welding and cutting purposes
IPC: F17C5/06
Filed: 1929-01-31
Abstract: 306,130. Ges. fur Industriegasverwertung. Feb. 16, 1928, [Convention date]. Revaporizing liquefied gases. - Waste or residual gases produced when liquefied gases are drawn off or transferred from one vessel to another by auto-compression are brought to working pressure by mechanical compression. The compressor 2 and a liquid gas supply tank 1 are mounted on a wagon, the compressor having supply and discharge hose pipes 3, 7 fitted with instantaneous couplings for connection with a gas pipe from the evaporating vessel 11 and with storage cylinders 10 respectively. The residual gas in the vessel 11 after evaporation of the liquid is removed and compressed from its pressure of about 6 atmospheres to working pressure, allowing the vessel to be refilled with liquid; or the gas may be compressed during evaporation of the liquid. The compressor may be stationary.
Patent GB-1085194-A (GB)
Title: Improvements relating to shaft seals
IPC: F16J15/18
Filed: 1966-01-25
Abstract: 1,085,194. Seals. CARL HUTH & SOHNE. Jan. 25, 1966 [Feb. 4, 1965], No. 3355/66. Heading F2B. A seal for a crank-shaft or gear-box shaft comprises a U-shaped casing 1, 2, 3 and two bevelled sealing rings 7, 8 urged by a common helical spring 6 so as to act radially towards the shaft and in axially opposite directions. The rings may be made on a textile base and from elastomers or synthetic plastics, the radial sealing surfaces being cylindrical as shown or lip-shaped. The casing may be made of metal or synthetic plastics and, if desired, may contain a lubricant or be connected to suction.
Patent GB-329348-A (GB)
Title: Improvements in machines for treating fabrics by drying, drycleaning, dyeing, or washing
IPC: D06F34/06
Filed: 1928-12-15
Abstract: 329,348. Pierce, H. May 7, 1928, [Convention date]. Divided on 311,222. Fats and fatty oils, extracting by solvents.- A unit for machines for treating fabrics by dry cleaning comprises a casing containing a rotatable cylinder and power shafts, for driving the cylinder, extending beyond the casing and provided with coupling devices for connecting the unit in series with similar units. Means are provided for automatically stopping the operation at the end of a predetermined interval. In the apparatus shown, which is that described in Specification 311,222; and 329,347, [Class 34 (ii), Drying systems &c.], the cylinder 24 is mounted in a casing 1, and supported and driven by discs 30, 31, which engage V-shaped grooves 29 in the cylinder. The driving shafts 32, 33 of the units are directly coupled. A timing device is connected with means for raising the cylinder from the driving discs which comprises discs 45 which engage the grooves 29. and are raised by a spring 46 through levers 40, 42. The timing device also releases a sliding door 3 which is opened by a spring 10, at the same time closing a door 15 through which drying air is supplied through the heater 14 by a fan 20. The timing device comprises a rack 65 which normally engages a pinion 94 but which can be released by the operator and set in a predetermined vertical position according to graduations on the casing 59. A pivot, 78, Fig. 14, carries a latch 80 which engages the door 3, a latch 83 which engages a bar 74 connected to the lever 40 and an arm carrying a sliding block 86. The closing of the door 3 releases the latch 83, and allows the lever 40 to be depressed by the pedal 41, lowering the cylinder on to the driving discs, the bar being held down by the latch 83 as shown in Fig. 14. The pinion 94 is actuated through two ratchet mechansms 103, 114, Fig. 7, by a rod 112 eccentrically pivoted on the cylinder. A lug 71 on the rack moves the block 86 into the path of a lug 90 on the cylinder whereby the latches 80, 83 are released, the door 3 being opened and the cylinder raised from the driving discs into engagement with brake blocks 38.
Patent GB-830141-A (GB)
Title: Improvements in instruments for testing vision
IPC: A61B3/02
Filed: 1956-02-03
Abstract: 830,141. Sight-testing apparatus. ASHER, H. M. F. May 3, 1957 [Feb. 3, 1956], No. 3417/56. Class 97(1) An instrument for testing and exercising vision comprises, for each eye, a light source for projecting a picture on a transparency on to a mirror and thence the eye of the patient through a lens system including a pair of circular cylindrical lenses; the component parts of the apparatus being adjustable for horizontal and vertical squint, to alloy for strength of spherical corrections and for astigmatic corrections in both strength and axis. As shown two cylindrical housings 1 contain light bulbs 2 which illuminate lantern slides 3 on which are represented letters of differing sizes. Above the slide is a suitably mounted convex lens 4 and a halfsilvered mirror 5 tilted at 45 degrees to the vertical. Two circular cylindrical lenses 6 and 7 of equal strength but opposite sign are arranged coaxially so that light from the lamp 2 reflected by the mirrors 5 will pass through them. Means are provided for rotating the lenses 6 and 7 in opposite directions, and additional means for rotating them simultaneously in the same direction. The housings 1 are adjustable for interocular distance, and also angularly adjustable about the pivots together with the rest of the optical system for each eye to allow for horizontal squint; tilting of the mirrors 5 about a horizontal axis allows for vertical squint. Motion of the lenses 6 and 7 in the sense indicated by D<SP>1</SP>, D allows for astigmatic corrections and vertical movement of the slides 3 allows for strength of spherical correction. The various motions may be provided with scales to indicate the correction to be applied. In use, the optician adjusts the controls until the patient sees clearly the charts on the slides 3, all the components are then swung out of the way so that the patient views an ordinary wall chart through lenses 6 and 7 only, the correcting glasses indicated by the test are then inserted in front of the eyes so that the wall chart is seen clearly as a check of the apparatus.
Patent GB-322130-A (GB)
Title: Improvements in or relating to balancing-mechanism for sliding windows and the like
IPC: E05D13/00
Filed: 1929-02-01
Abstract: 322,130. Beckett, Laycock, & Watkinson, Ltd., Beckett, J. E., and Willans, G. H. Feb. 1, 1929. Sashes balanced by springs. - A spring controlled lazy-tongs device for balancing sliding windows or the like, is provided with means whereby the tension of the springs can be readily adjusted from the esterior. The springs 3 are each connected at one end to the lazy-tongs and at the other end to a screwed rod 5. A worm wheel 6 screws on the rod 5 and is rotatably mounted in a bearing 7, but is incapable of endwise movement. A worm 8 meshes with the worm wheel and is fitted to a spindle 9 with square end 11, which end extends through the wall or floor of the compartment, in which the window slides. Bevel wheels may be substituted for the worm and worm wheel. A looking device, applied to the square end 11, may be provided to maintain the adjusted tension of the spring.
Patent GB-432810-A (GB)
Title: Improvements in or relating to the manufacture of sodium and other light metals
IPC: C22B26/10
Filed: 1934-02-02
Abstract: 432,810. Recovering light metals. DU PONT DE NEMOURS & CO., E. I., Wilmington, Delaware, U.S.A. Feb. 2, 1934, No. 3559. Convention date, Feb. 2, 1933. [Class 82 (i)] To recover sodium and other light metals from the sludges produced in the production of light metals by the electrolysis of fused metal salts or to recover a substantially pure light metal from a mixture, the sludge is introduced into a bath of molten salt having a specific gravity higher than that of the metal or alloy to be recovered and a composition such that the metallic constituents of the sludge do not react with it or such that one or more of such constituents react with one or more of the constituents of the bath to form a metal or metals, the bath being maintained above the melting point of the metal or alloy to be recovered, such metal or alloy being floated off. In a specific example a steel vessel 1 is filled to a point above the top of a bell 2 with a fused anhydrous mixture of calcium chloride and sodium chloride ; a sludge containing about 70 per cent of metallic sodium, about 20 per cent of metallic calcium and about 10 per cent of salts and oxides of these metals is continuously fed into the bell 2 by a pipe 3, the salt bath being agitated by a stream of nitrogen: the metallic calcium reacts with the sodium chloride to produce sodium which, with the free sodium, flows off through the pipe 4 into the trap 5. Calcium separates out in the trap, which is air cooled to about 100-175‹ C., and is scraped into a well 7 whence it is removed by a baling device ; the sodium flows off through the outlet 8. Calcium oxide settling out in the lower part of the bath is removed at intervals and the sodium chloride content is maintained at not less than 30 per cent. The calcium chloride formed may be used to replenish the electrolyte in the electrolytic cells in which the sludge is produced. By varying the composition of the molten bath used the composition of the metal or alloy recovered may be varied. The process is stated to be applicable to the manufacture of sodium and other light metals, i.e. the alkali and alkaline earth metals including beryllium and magnesium.
Patent GB-1363532-A (GB)
Title: Production of metal-containing materials by gel-precipitation
IPC: G21C3/62
Filed: 1971-02-01
Abstract: 1363532 Gel spheres UNITED KINGDOM ATOMIC ENERGY AUTHORITY 17 Jan 1972 [1 Feb 1971] 3632/71 Heading C1A [Also in Division G6] Gel spheres of refractory materials, e.g. Pu, U and/or Th oxides or carbides, are prepared by mixing a solution containing a metal salt with a polyacrylamide and formamide and introducing drops of the mixture into an aq. alkaline solution to form the solid gel spheres. The gel spheres can be converted to microspheres by subsequent drying and calcining. Carbon may be added to the mixture before introduction into the aq. alkaline solution either (a) to obtain the carbide by subsequent heating of the gel spheres in an inert atmosphere or (b) to obtain a porous sphere by heating in an oxidizing atmosphere. The product may have a particle size of 100-400 Á. The polyacrylamide gelating agent may have a M.W. of 4 Î 10<6>. The salt may be a uranium and/or thorium nitrate, e.g. an anion-deficient solution. Other gelating agents may be employed in admixture with the polyacrylamide. The spheres may be dried in a chlorinated hydrocarbon atmosphere.
Patent GB-1055191-A (GB)
Title: Electrostatic printing method
IPC: G03G13/26
Filed: 1964-01-28
Abstract: 1,055,191. Electrophotographic processes. RESEARCH LABORATORIES OF AUSTRALIA Ltd. Jan.28, 1964 [Jan.29, 1963], No. 3672/64. Heading G2H. [Also in Division H1] In a method of successively producing multiple copies an electrostatic developed image of insulating material is produced on a master and then the master is electrostatically charged, subjected to light and developed in the image areas with developer toner suspended in an electrically insulating liquid, the developed image is transferred to a copy sheet while wet, and the image on the copy sheet is fixed. As shown, an electrostatic image 3, Fig. 1 on a photo-conductive layer 2 is developed to form an insulating image 4. The developer may be powdered natural on synthetic resin, e. g. thermoplastic phenolic resin or may be a resin suspended in an insulating liquid. Examples of such resins are polystyrene, polyethylene, silicone resin, vinyl resin, acrylic resin, alkyd resin, ethyl cellulose, ethyl hydroxy ethyl cellulose, rubbers, gums, or waxes. Examples of insulating liquids are n-hexane, n-heptane, and cyclohexane, and perchloroethylene. The developer may also include varnishes, oils, dispensing agents, polarity agents, dyes and pigments. The master, Fig.3, is electrostatically charged e.g. by a metallic or conductive roller or needles connected to a source of potential and then exposed to light, ultraviolet, or infrared radiation from a source to discharge non-image areas 6. The insulating image 4 is then developed with a printing toner comprising toner dispersed in a liquid, e.g., a hydrocarbon of volume resistivity not less than 10<SP>9</SP> ohm. cm., of dielectric constant of 3 or less and low solvent power. Examples of such liquids are mineral spirit and naphthas. Examples of toner concentrate for dispersion in such liquids are given and generally include pigment, varnish, and paraffin wax. While the printing toner is wet, the wet image is transferred to a copy sheet 9, Fig.6, by passage through rollers 10, 11 connected to a source of potential. The copy sheet with transferred image is separated from the master and upon evaporation of the dispersing liquid, the image on the copy sheet becomes fixed. The master is again exposed to light and developed before a further transfer operation. To prolong the life of a master the backing may be of foil instead of paper.
Patent GB-534451-A (GB)
Title: Improvements in electric immersion heaters for hot water bottles and the like
IPC: H05B3/06
Filed: 1940-03-01
Abstract: 534,451. Electric immersion heaters. VERNON, T. W., and STERLING UTILITIES, Ltd. March 1, 1940, No. 3884. [Class 39 (iii)] [Also in Group XVII] An electric immersion heater for a hot water bottle comprises a resistance wire 1 wound on a flexible core 2 of insulating material, such as silk. latex, or rubber reinforced with silk. The heating element is bent into U-shape, and the wire secured to terminal blocks 3 carried by an insulating ring 4 to which blocks the ends of the supply wires 5 are also secured. The heater is enclosed in a rubber cover 6 which is extended to enclose the connections 3, cable 5, and plug 7. The flanged stopper 8 is mounted on that part of the cover enclosing the cable 5, and is screwed down against a collar 9 integral with the cover, whereby a watertight seal is formed. To ensure that the heater is in contact with the water, it is provided with a cover of braiding or felt 10, or the rubber may be formed with projections 11. In a modified form of stopper, Fig. 4, a threaded annular groove 14 receives a flanged sleeve 15 which engages the collar 9 of the heating element to secure it. The stopper, with the heating element, is then screwed into the neck of the bottle
Patent GB-1298712-A (GB)
Title: Method of protecting water and materials liable to come into contact with water against contamination
IPC: A01N47/06
Filed: 1970-01-27
Abstract: 1298712 Molluscicidal and algicidal compositions RHONE-PROGIL 27 Jan 1970 [28 Jan 1969] 4009/70 Heading A5E Water and materials liable to come into contact with water are protected against contamination by aquatic algae and molluscs by applying thereto a composition comprising at least one carbonate of the formula wherein R is an alkyl group, e.g. a methyl, ethyl or butyl group, and a diluent or carrier. The compositions may be applied to textile fibres and fabrics, timber, resins, elastomers and fish-raising tanks in the form of finely ground or agglomerated solids or of an aqueous emulsion or solution optionally also comprising a penetrating agent, fixative, anti-oxidant, sequestering agent, surface active agent and/or antiflocculating agent.
Patent GB-205760-A (GB)
Title: Improvements in grinding mills
IPC: B02C17/06
Filed: 1923-02-12
Abstract: 205,760. Davies, A. Feb. 12, 1923. Ball and like mills.-A tube mill for grinding ores &c. comprises one or more containers or drums provided with one or more hollow trunnions each comprising an annular sieve-like structure through which the ground material is discharged from the mill and a clear central opening through which fresh material can be fed into the mill. Fig. 1 shows a mill consisting of a pair of drums 1 supported bv hollow trunnions 2 in bearings 3, each trunnion having a truncated conicalshaped axial aperture 5. The two drums are connected in axial alignment by an axial sleeve-portion 6 which is provided with a transverse partition 7 and carries a pair of scoops 8 forming an S-shaped hollow structure with the open ends of the scoops pointing in opposite directions. On rotating the mill, the scoops pick up material from a feed-trough 9 and transfer it to the drums 1. On rotating the mill in the backward direction, the scoops deliver the material from the drums. The mill may be charged through the trunnions and by the scoops; or the scoops may be used for charging and the trunnions for discharging, or vice versa. The peripheral wall of each drum consists of a number of renewable portions 10, secured together by web portions 12, Fig. 2, a smaller part 11 serving as a man-hole. The inner faces of the side walls of the drums are provided with a number of separately-detachable segmental plates 14 which may be arranged in two or more concentric sets a, b. Preferably the walls increase in thickness towards the periphery of the drum. The innermost set a of plates terminates so as to leave an axial clearance 15, and the edges of these plates are spaced for a short distance so as to provide a number of short radial slots 16. Fig. 3 shows a single drum mill with inner hollow truncated conical inlets 17 supported by the innermost set of plates 14 and outwardly-flared discharge cones 20 secured to the trunnions 18, so that the drum may be charged and discharged simultaneously through one or both ends. The mill may be formed of more than two drums and scoops as shown in Fig. 1 connected axially end on end. The inclined side-plates of the mill may be extended so as to meet without the interposition of peripheral plates, a man-hole then being provided in the side of the mill.
Patent GB-1445241-A (GB)
Title: Method of producing water vapour and a vapour generator for performing such a method
IPC: F22B1/30
Filed: 1974-01-29
Abstract: 1445241 Vapour generators PLASCON AG 29 Jan 1974 [9 March 1973] 4166/74 Heading F4A [Also in Division G3] The supply and removal of water from a vaporization vessel 1 having heating electrodes 2 is controlled by a device for comparing the measured current flow with a preset desired flow and a device for opening and closing inlet and outlet valves 3a, 4a, depending on the result  of the comparison. With the switching positions as shown in Fig. 1, a control voltage U ST  is applied to the valve 3a to feed water into the vessel 1. As the water rises up the electrodes 2, the current in lines 2a, 2b increases until it reaches a maximum preset by a rheostat 5e at which point a threshold switch 6 is actuated to supply the control voltage to a timer 9. The supply of water to the vessel is thus interrupted together with the simultaneous actuation of a relay 10 to connect liner 8b with line 4b. The current now drops due to the water vaporization and the time taken for it to reach a predetermined minimum value is measured. The measured time is longer than the desired time since the latter has been calculated for water having a conductance higher than that found in the local water supply. Thus the relay 10 will return contact 10c to its initial position before the threshold switch 6 can return contact 6c to its initial position. Thus when the minimum value for the current is reached the switch 6 reactivates the valve 3a to feed water to the vessel 1. As the number of these cycles increases, the concentration of salt in the water rises so that eventually the actual dropping time is shorter than the predetermined time. At this stage the switch 6 will return to its initial position before the return of the relay 10 so that the control voltage is applied to the valve 4a. Water is thus drained from the vessel 1 until the expiry of the time set on the timer 9 after which the valve 4a is closed and the valve 3a opened. The replenishment cycle may now begin again. In a second embodiment (Fig. 2, not shown) the circuit of Fig. 1 is modified so that when the actual dropping time is shorter than the preset time a locking device (12b) is actuated by a second threshold switch (11). As a result the relay 10 is prevented from being switched back to its initial position after the expiry of the desired time. Thus water is removed from the vessel 1 for a longer period and allows the current to drop to a lower limiting value. On attaining the lower limiting value, the second threshold switch (11) applies the control voltage to a cancelling switch (12c) so that the locking of the relay is cancelled and the valve 3a opened. Two other embodiments (Figs. 5 and 6) are described in which the timer 9 is replaced by a differentiating-comparison network (14) or a desired-flow simulator (18).
Patent GB-903364-A (GB)
Title: Improvements in hinge cover folding boxes
Inventor: LEFIEF FRANK MAXIM
IPC: B65D5/42
Filed: 1960-02-05
Abstract: 903,364. Cartons. BALJAK CORPORATION. Feb. 5, 1960, No. 4217/60. Class 18. A folding box formed from a cardboard blank has end flaps 32, 33 and 28, 29 on the back and front panels 13, 12 respectively, slit at 36, 37, 42, 43 to engage hookwise to form the outer end walls of the box, and end flaps 24, 25 on the bottom panel 11 which are bent up to form the inner end walls of the box, the upwardly extending parts 38, 39 of the flaps 28, 29 forming guiding tabs to facilitate the introduction, between the inner and outer end walls, of side flaps 20, 21 on the cover 16 hinged at 17 to the back panel 13. The cover side flaps are scalloped as shown to facilitate closing by automatic machinery. A front tuck-in flap 18 is hinged to the cover. The parts 38, 39 form stops for the cover. The cover flap 21 is inserted in front of the tab 39 and behind the end panel 33, the scalloped edge 50 providing clearance with respect to the end of the slit 37. In the closed position a flat portion 56 rests upon the bottom of the slit 37 increasing the stacking strength of the box. A window may be provided in the lid and back panel, closed by a sheet of transparent material.