baber/WOPTO huggingface dataset:
Patent GB-1423962-A (GB)
Title: Electrical device
IPC: G01J1/24
Filed: 1974-03-12
Abstract: 1423962 Non contact potentiometer INTERMADOX A G 12 March 1974 [21 March 1973] 10959/74 Heading G1A In a non-contact making potentiometer comprising two simultaneously movable (rotatable) cylindrical masks 9 and 10, one mask 9 co-operates with a light source 6 (a photo-diode) and a photoelectric element 8 to provide an output voltage (Ua) Fig. 4a, (not shown) proportional to the relative position of the mask 9, while the other mask 10 is shaded 23 so that it co-operates with the light source 6 and a photo-electric element 7, in a control feedback circuit Fig. 4b (not shown) to vary the intensity of the light source 6 to compensate for linearity errors in the photo-electric element's 7 output to an operational amplifier with a loose feedback coupling. The connections to the operational amplifier are such that any difference between the two input voltages due to, for example, the amount of shading 23 on the mask 10 or a decrease in the source's output light intensity, will cause the intensity of the lamp to increase until its two input voltages are equal. The light source may be positioned relative to the first and second photo-electric elements 7 and 8 such that the photoelectric element 8 is illuminated more intensely than the photo-electric element 7, Fig. 3 (not shown), thereby increasing the sensitivity of the photoelectric element 7 to variations in the shading of the mask 10. The masks in the Figs. are in the form of strips of photographic film bent to fit into annular grooves 20 in two discs 1 and 2 on a rotatable shaft 3, but the description briefly refers to glass discs or to stationary masks associated with movable sources and detectors.
Patent GB-362303-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J17/56
Filed: 1931-04-14
Abstract: 362,303. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hull, A. W.; 1435, Lowell Road, Schenectady, New York, U.S.A.) April 14, 1931, No. 11027. Convention date, April 14, 1930. [Class 39 (i).] In a thermionic device of the kind adapted to operate with a supported arc discharge and comprising a thermionic cathode, an electrostatic control member and an anode mounted within an evacuated envelope, the cathode is so mounted that when energized its most negative portion is the nearest to the anode. The resistance or impedance load on the grid circuit is thus reduced, the effect of charges on the glass walls is in some cases diminished, and more effective control in accordance with variations of voltage on the grid is attained, especially when the power available for control is small. In the arrangement shown in Fig. 1 the V-shaped cathode filament 10, e.g. of nickel ribbon, which may be coated with an alkaline earth oxide or other electronically active material, is mounted with its ends near to and its apex remote from the anode 15, which may be of carbonized nickel and of dish shape with the concave side towards the cathode. The electrostatic control grid 5 is a cylinder of mesh material, e.g. an alloy consisting of approximately 80 per cent of nickel and 20 per cent of chromium, open at one end to receive the cathode and closed at the other end. The ends of the filament 10 are supported by conductors 11 sealed in a re-entrant stem 2 and connecting with contact pins 12. The apex of the V is supported by a hook 13 secured to a wire 14 fused. into the stem. The grid 5 is supported by rods 6 fixed to a band 7 clamped about the stem 2 and connected by a lead 8 to a contact pin 9. The anode 15 is carried by a rigid conductor 16 provided with an insulating glass sleeve 18 and connecting with contact members 17. The ionizing medium may be mercury vapour at a pressure of 1-100 microns, or argon, helium or neon at a somewhat higher pressure, or for the highest efficiency an alkali vapour, e.g. of sodium or caesium, with an admixture of an inert gas to assist in starting. An alternating voltage from a transformer 19 is impressed on both the anode 15 and grid 5, and the filament 10 may be energized from the same source or bv direct current. The phase of the grid voltage with respect to that of the anode may be varied in any well-known manner. Fig. 2 shows the relations between the anode voltage a, the critical grid voltage b, and the actual voltage c applied to the grid, the shaded areas in the sets of curves A and B representing the amount of current per cycle (A) when the grid voltage is nearly 180‹ out of phase and (B) when it is nearly in phase with the anode voltage.
Patent GB-332963-A (GB)
Title: Process for the manufacture of synthetic resins
IPC: C08F240/00
Filed: 1929-04-30
Abstract: 332,963. I. G. Farbenindustrie Akt.- Ges. April 30, 1929. Divided on and addition to 310,816, under which a Specification was laid open to inspection under Sect. 91 of the Acts, May 1, 1929. Coumarone and indene resins.-In the production of synthetic resins by treating crude solvent naphtha with borofluoro fatty acids as described in the parent Specification, analogous compounds of boron fluoride with hydroxy-acids such as lactic acid or with unsaturated acids such as oleic acid are employed. These complex acids may be produced as described in Specification 316,987. In the examples, crude solvent naphtha free from bases and phenol but containing, indene is heated to 50‹ C. with cresol and borofluoro-oleic acid is added, the mixture being heated at 50-60‹ C. with stirring, diluted with benzene, heated at 80-100‹ C. with quicklime or barium oxide with stirring, filtered, and the unresinified portion distilled off in a vacuum, the product being a light resin soluble in polymerized oil; (2) the naphtha employed in the previous example is heated with borofluoro lactic acid at 50-60‹ C and further treated as in the previous example, the product being a resin soluble in solvent naphtha, turpentine, and turpentine substitutes.
Patent GB-953710-A (GB)
Title: New metallised monoazo dyestuffs containing triazinylamino groups
Inventor: BERRIE ALISTAIR HOWARD
IPC: C09B62/095
Filed: 1960-09-22
Abstract: The invention comprises the chromium and/or cobalt complex azo compounds which contain 1 atom of chromium or cobalt in complex combination with 2 molecules of a monoazo compound of formula <FORM:0953710/C3/1> wherein A is a benzene nucleus having the hydroxyl group in the ortho-position to the azo group and also containing a single nitro group and a single sulphonic acid group and which may be further substituted, for example by chlorine or methyl, B is a naphthalene nucleus having the hydroxyl group in the 1-position, the azo group in the 2-position, the -NR group in one of the positions 5, 6, 7 or 8 and having 1 or 2 sulphonic acid groups, R is a hydrogen atom or an alkyl group having up to 4 carbon atoms, m is 0 or 1 and Z is a 1,3,5-triazine radical containing one or two labile atoms or groups.  Labile atoms or groups are those which are bound by a covalent bond to a carbon atom of the triazine nucleus but which readily dissociate under the influence of heat or alkalis, especially in the presence of moisture, to form an ion or an uncharged molecule.  The dyes are prepared by reacting 2 moles of a halotriazine with 1 mole of a 1 : 2-chromium or -cobalt complex of an appropriate aminoazo dye.  Any halogen atoms linked to the triazine residue of the resultant product may be replaced by reaction with, for example, ammonia, amines, alcohols, phenols, potassium thiocyanate or mercapto compounds.  The dyes may be used in dyeing and printing of wool, polyamides and polyurethanes and, in particular, cellulose textile materials in the presence of an acid-binding agent, in red, green, brown, blue and black shades. Many examples and suitable components are specified. Specifications 797,946, 847,635 and 870,985 are referred to.
Patent GB-215751-A (GB)
Title: Improvements in and relating to carburetters
IPC: F02M7/22
Filed: 1924-05-05
Abstract: 215,751. Kolko, A. May 12, 1923, [Convention date]. Spray carburettors.- The body 1 forms a float chamber, a float 18 in which is guided by a tube 12 coaxial with a passage 27 to which air is admitted at 22, fuel at 28 and from which the mixture leaves at 30 controlled by a sliding valve 29, Fig. 2, which also controls additional air at 32. Petrol enters at 2 and passes to the float chamber by a valve 5 actuated by the float 18 through a lever 6 pivoted to a support 8 at 7 and engaging collars on the valve by projections passing through a slot in the support. With this arrangement, the float need not be lighter than the liquid. The support 8 carries a plug 16 in which is an orifice o protected by a filter 17, said orifice supplying fuel to the chambers 20<1>, 20 and apertures 26, 28. The valve 29 which controls the mixture and the additional air is ported at 30, and its end 29<1> may be shaped to vary the air admission according to any predetermined law. The valve has a projection 34 sliding in a slot 35 to prevent rotation and is moved axially by rotating a sleeve 36, a helical groove 40 in which engages and moves a pin 41 projecting from the part 34. The sleeve is rotated from a distance by a rod connected to a ball-and-socket joint 43 on the arm 38 which may be adjusted relatively to the valve. A small duct 32<1> in the valve admits air when the passage 32 is closed, and, at starting and slow speeds, another small duct admits mixture in addition to that theoretically required, in order to compensate for infiltration of air due to wear of parts. The port 30 may be closed and air only admitted for braking. The float chamber may be emptied by a plug 50 formed with a valve 51 and axial bore 52. The plug 4 Fig. 1, may be replaced by a filter plug, Fig. 9. In this the fuel enters at 2 and passes by way of the ducts 3<1a>, filter 46 and bcre 3<a> to the float chamber.
Patent GB-288651-A (GB)
Title: An improved sewing machine for use in uniting pieces of fabric or the like
IPC: D05B57/02
Filed: 1928-04-14
Abstract: 288,651. Spezial-Maschinen-Fabrik Rowley & Kieser Ges. April 14, 1927, [Convention date]. Addition to 263,821. Multiple-needle machines.-In a machine of the kind described and claimed in the parent Specification, in which a primary needle co-operates with a looper to form a chain-stitched seam and a secondary needle co-operates with two loopers to form an over-oast whip-stitched seam covering the first seam, the two needles, being driven simultaneously, the primary needle co-operates with a looper to form an over-cast whip-stitched seam and the secondary over-cast seam is formed simultaneously by a looper identical with the primary looper. The primary stitch needle f co-operates with a looper a driven from the shaft e through a link b pivoted at k, a pitman c and a wrist pin d. In order to engage with its point, the loop of the needle thread underneath the fabric and to present the whip-stitch thread to the needle above the fabric, the movement of the looper a is controlled by a rod h pivoted at m to the main frame j. The secondary stitch needle f<1> co-operates with a similar looper a<1> driven from a shaft e<1> through a link b<1> pivoted at k<1>, a pitman e<1> and a wrist pin d<1>. The rod h' serves the same controlling purpose for the looper a<1> as the rod h for the looper a.
Patent GB-592367-A (GB)
Title: Improvements in or relating to apparatus for displaying positional, numerical or like data
Filed: 1945-05-02
Abstract: 592,367. Apparatus displaying positional and like data. PARKER, E., and WRIGHT, C. S. May 2, 1945, No. 11185. [Class 97 (i)] [Also in Group. XL] The apparatus comprises a display device, e.g. a cathode-ray tube, for producing substantially in a single plane a visible composite representation of the variable quantities e.g. range, elevation and bearing, constituting the data and means for reciprocating the device or an image thereof in a direction normal to or inclined to the plane of the representation so that the representation has apparent depth in the direction of movement and the instantaneous value of one of the variable quantities can be observed as a function of the apparent depth. As shown in Fig. 1, a frame F carries a cathode-ray tube, on the screen S of which is produced a B-scan, Fig. 2, wherein intensity modulation traces I<1>, I<2>, I<3>, I<4>, I<5> defined in terms of range and bearing co-ordinates OB, OA represent objects from which radar echo signals are. derived with the radar aerial scanning at elevation #, such traces varying with change in #. Below the screen S a mirror M is vertically oscillated by rotation of a motor P which is coupled to the mirror support T by eccentrics E and rods R. The reciprocatory movement of the mirror is synchronized with the elevation scan of the aerial. Owing to the persistence of vision, an observer of the mirror M will see an apparent prism, the height of which is formed by the elevation co-ordinate, and intensity modulation traces therein corresponding in position with the positions of the echo-producing objects within the volume of space scanned by the aerial. The mirror M may be replaced by a rotor Q on which a number of stepped mirrors M1 ... M10, Fig. 4, is built, the rotor being rotated about a central axis normal to or inclined to the screen S. For the same purpose, there may be used (1) a lens and a screen, both of which are movable, or (2) a rotating disc carrying lenses of progressively varying focal length and associated with a fixed screen. Measurement may be effected by a grid movable relatively to a scale or " electrical cross-wires " may be formed in the apparent prism by employing a cathode-ray tube in a known manner. The Provisional Specification also describes speeding up and slowing down of the movement of the reciprocating systems whereby a particular portion of the apparent prism will be exaggerated.
Patent GB-610626-A (GB)
Title: Improvements in or relating to kettles and like vessels incorporating electrical heating means
IPC: A47J27/21
Filed: 1946-04-11
Abstract: 610,626. Thermal switches. BEETHOVEN ELECTRIC EQUIPMENT, Ltd., and BURTON, D. C. April 11, 1946, No. 11210. [Class 38 (v)] The foot 16 supporting an electric kettle 10 opposite to the spout, is attached to a spindle 29 slidable in a boss 27 of an annular member 25 surrounding a slotted bush 20 of an immersion-heater unit 13 and clamped by a ring-nut 26. A grub screw 33, guiding the spindle is locked to the member 25 by a nut 34, and serves as an adjustable abutment for one end of a spring 36 bearing on a collar 35 fixed to the spindle. A circular insulating block 37 carries U-shaped resilient contacts 42, 43 which are closed when the weight of the kettle and its contents is sufficient to move the collar 35 upwards, but open the circuit through the heater element when the kettle boils dry.
Patent GB-336615-A (GB)
Title: Improvements in and relating to the manufacture of nitrocellulose solutions or compositions
IPC: C09D101/18
Filed: 1929-04-11
Abstract: 336,615. Jenkins, W. J., and Imperial Chemical Industries, Ltd. April 11, 1929. Compositions containing nitrocellulose.- Nitrocellulose compositions are made by dissolving water-wet nitrocellulose in a solvent which evaporates in air at normal temperatures and has a boiling point not less than about 127‹ C., with the addition of a water miscible or partly miscible volatile solvent or diluent in amount sufficient to keep the water in solution. ,The volatile solvent boiling above 120‹ C. may be miscible or partly miscible with water for example ethylene glycol monoethyl ether, or immiscible with water, for example butyl acetate. Examples of the water miscible or partly miscible solvent or diluent are industrial alcohol and ethyl acetate. Additions may include a solvent of higher boiling point than the main solvent, for example methyl-cyclo-hexanone. and water wet or moist pigments. Specification 310,062 is referred to.
Patent GB-541057-A (GB)
Title: Improvements in or relating to vibratory mechanism
IPC: B06B1/16
Filed: 1940-07-05
Abstract: 541,057. Mixing concrete. ROSENFELDER, R. July 5, 1940, No. 11265. [Class 86] [Also in Group XXIV] Consists in mechanism in which rotary motion is transformed into radial vibrations particularly for use in imparting vibrations to a concrete mix. In a known mechanism a substantially cylindrical weight is caused to move in the manner of a conical pendulum within a cylindrical housing so that the outer surface of the weight by bearing against the inner surface of the housing produces in the latter pure sinusoidal radial vibrations. The cross-section of the housing has been made elliptical. According to the invention the housing is caused to vibrate irregularly by introducing a disturbing factor which does not consist merely in an elliptical cross-section of the housing. The outer surface of a cylindrical weight 1, Fig. 1, suspended by a universal joint 4 is adapted to contact with a surface 2 fixed to the housing 5. The disturbing factor is introduced by making the wall of the casing thicker on one side of the axis than on the other or by making the walls on these sides of different materials so as to throw the centre of gravity of the housing away from its axis 7. In a modification, the weight is recessed on one side of its axis, and in a further modification the universal joint for suspending the weight is offset from the axis of the housing. In Fig. 4, the weight 20 and housing 21 are each provided with two cylindrical surfaces 22, 23 and 24, 25, the surfaces of at least one pair, e.g. 24, 25, being eccentric with respect to one another. The weight has a concentric cylindrical recess and, in operation, the surface 22 of the weight contacts with the inner surface 24 of the housing alternately with the inner surface 23 of the weight. contacting with the outer surface 25 of the projection 27. The projection may be eccentric to the housing and the recess eccentric to the weight. In a modification all four surfaces are concentric and the weight is adapted to be tilted during operation. The cross-section of at least one of the surfaces is made non-circular but not merely elliptical. Thus the weight may have a bulge or sharp edge, or it may be circular and the housing rendered non-circular, e.g. by adjustable screws, or by a bulge. In a still further modification, Fig. 9, the weight 50 has a cavity 51 in which are located one or more weights 52. the free movements of which may be regulated by one or more screws 53. The cylindrical surfaces may be replaced by conical surfaces and, instead of frictional engagement between the housing and weight, positive gearing may be used.
Patent GB-107286-A (GB)
Title: Improvements in and relating to Crucible Melting Furnaces.
Inventor: HALL ISAIAH
IPC: E21C35/12
Filed: 1916-08-10
Abstract: 107,286. Hall, I. Aug. 10, 1916. Crucible furnaces.-An annular blast chamber m is provided in a furnace adapted for solid fuel, and a door l gives access to the spaces above and below the grate, being preferably constructed to form a segment of the blast chamber. The blast enters the blast chamber tangentially. A counterbalanced cover p, capable of horizontal as well as vertical movement, is provided, and fitted with a small inspection cover s.
Patent GB-200247-A (GB)
Title: Improvements relating to tower wagons
IPC: B60M1/28
Filed: 1922-04-22
Abstract: 200,247. Rawlinson, S., Rawlinson, J., and Stirrup, J. April 22, 1922. Scaffolding.-Lateral movement of the sections of a tower wagon constructed in two or more sections is prevented by wedge members D, E, located in recesses in the upright frames of the sections B, C, and movable vertically between the frames of the sections C, B and B, A respectively by levers d<3>, e<2>. The outer end of the lever e<2> is secured to a collar e<7> movable vertically on a screw - threaded tube adapted to be rotated by a hand-wheel e<10> on the lowest section C, the tube having a collar d<10> formed with a non- circular aperture to accommodate a sliding rod d<8> provided at its upper end with a similar collar d<6> attached to the lever d<3>.
Patent GB-101155-A (GB)
Title: Improvements in Acetylene Generators.
Inventor: MARGRETH JOSEPH
IPC: C10H9/00
Filed: 1916-08-11
Abstract: 101,155. Margreth, J. Aug. 11, 1915, [Convention date]. Regulating head of liquid directly; solid in separate charges in generator.-An acetvlene-generator comprises a water tank a with an enlarged top b, a gas-bell c, a generating-bell d, and carbide - con - tainer e; the bells c, d are connected by an inverted U-tube o, the end q of which dips into the gas-bell and is below the lever of the top of the carbide-container e, so that the gas pressures in the bells c, d, are equal, and entry of water over the top of the carbide-container is prevented. The carbide is arranged in a series of trays h, i, k divided into compartments by partitions l, m, n; water enters by an opening f, passing under the guide-wall g to the bottom of the container, and enters the several carbide compartments in succession through the openings 1 - - 12; gas is led off for consumption by the pipe s. In a modified construction, the partitions l, m, n are omitted, and the end q of the pipe o is flush with the top of the gas-bell c, which is below the level of the top of the carbide-container e.
Patent GB-979490-A (GB)
Title: Improvements in or relating to carrying cases
IPC: B65D71/52
Filed: 1961-03-28
Abstract: 979,490. Boxes. NOVO INDUSTRIAL CORPORATION. March 28, 1961 [March 28, 1960], No. 11376/61. Heading B8P. A non-collapsible case for carrying bottles, cans and the like is made of synthetic plastic material and comprises a body 10 having a base and four upstanding side walls 14, 16, a partition 66, 88 joined to walls 16 and having a handle 52 which extends above the top edges of the side walls and partitions 22 joined to walls 14 and base 12 which extend inwardly without reaching partition 66, 88, but defining therewith articlereceiving compartments. In one embodiment the handle 52 has legs 64 which are detachably secured to tabs 80 on stubs 74, integral with a longitudinal rib 28, by means of buttons 84, and partition members 66 which rest on members 30 are attached to side walls 16 by button-in-hole connections 68. The base is apertured to facilitate washing and sterilization and the apertures delimit strips 40, 42 and discs 44, the latter being upwardly domed and provided beneath with circular beads 46 (Fig. 7, not shown) to facilitate vertical stacking of the bodies 10. In a second embodiment legs 64 are extended and terminate in vanes which, on twisting the legs about a vertical axis, may be made to pass through slotted sockets formed in the base (Fig. 5, not shown). On releasing the legs the vanes are brought to a position approximately at rightangles to the slots by the resilience of the material. The connections 68 may be replaced by dovetail-type joints.