baber/WOPTO huggingface dataset:
Patent GB-879802-A (GB)
Title: A composition and method for stabilizing trichloroethylene
IPC: C07C17/42
Filed: 1959-02-09
Abstract: Trichlorethylene is stabilized for use in metal degreasing by the addition of a mixture comprising (a) a hydrazine derivative, preferably in an amount by weight of the trichlorethylene of 0.001-0.1%, (b) an alcohol, preferably in an amount of 0.01-1%, (c) an epoxide, preferably in an amount of 0.01-1%, and (d) a phenol, preferably in an amount of 0.001-0.1%. (a) may be N : N-dimethylhydrazine, benzalazine, diethylideneazine or dimethylketazine; (b) may be butyl, isobutyl, propyl, isopropyl, amyl, isoamyl or ethyl alcohol; (c) may be propylene, butylene, amylene, or chlorpropylene oxide; and (d) may be phenol, thymol, o-nitrophenol, eugenol, or isopropyl- or ethyl-p-hydroxyanisole. Preferred compositions comprise (1) N : N-dimethylhydrazine, isobutanol, butylene oxide and phenol, and (2) N : N-dimethylhydrazine, isobutanol, propylene oxide and o-nitrophenol. Specification 878,718 is referred to.ALSO:Trichlorethylene is stabilized for use in metal degreasing by the addition of a mixture comprising (a) a hydrazine derivative, preferably in an amount by weight of the trichlorethylene of 0.001-0.1%, (b) an alcohol, preferably in an amount of 0.01-1%, (c) an epoxide, preferably in an amont of 0.01-1%, and (d) a phenol, preferably in an amount of 0.001-0.1%. (a) may be N:N-dimethylhydrazine, benzalazine, diethylideneazine or dimethylketazine; (b) may be butyl, isobutyl, propyl, isopropyl, amyl, isoamyl or ethyl alcohol; (c) may be propylene, butylene, amylene or chlorpropylene oxide; and (d) may be phenol, thymol, o-nitrophenol, eugenol, isopropyl-p-hydroxyanisole or ethyl-p-hydroxyanisole.  Preferred compositions comprise (1) N:N-dimethylhydrazine, isobutanol, butylene oxide and phenol, and (2) N:N-dimethylhydrazine, isobutanol, propylene oxide and o-nitrophenol. Specification 878,718 is referred to.
Patent GB-667989-A (GB)
Title: Improvements in or relating to electrical measuring devices
Inventor: DUNN ROLAND HARRIS
IPC: H04M3/12
Filed: 1950-02-21
Abstract: 667,989. Frequency measurements. STANDARD TELEPHONES & CABLES, Ltd. Feb. 21, 1950, No. 4415/50. Class 37. In apparatus for measuring a rate, e.g. of operation of an electrical contact irl, comprising a condenser C1 which is periodically charged at the said rate to feed a saw-tooth A.C. into a smoothing circuit TC whose D.C. output, indicative of the rate, is measured by a meter M, the rate of response of the smoothing circuit is controlled by a second synchronous electrical contact ir2. In the normal position of contact irl, condenser C2 is charged to a negative potential, so that with operation of contact irl a negative impulse is applied to the grid of a valve VI, which stops conducting, and its anode volts rise, thereby charging condenser C1, the anode volts gradually dropping due to the feed-back via C1 to the grid, producing a saw-tooth voltage wave across C1. This is fed to valves V2, V3 via smoothing circuit TC, and the reading of meter M in the cathode lead of the valves indicates the impulsing rate of ivl. A negative feed-back circuit is supplied via resistance R7 to speed the voltage changes on the grid of valve V1. The smoothing circuit TC comprises two parallel branches, the first being rectifier W, resistance R12 and condenser C3 having an overall large time constant to give a high degree of smoothness, the second comprising synchronous contact ir2 and resistance R13. In the normal position ir2 allows a condenser C4 to be charged from the junction of resistances R3, R4, and this voltage is applied on impulsing to the grids of valves V2, V3 to increase the rate of response of the circuit.
Patent GB-1062880-A (GB)
Title: Improvements relating to centrifuges
IPC: B04B11/02
Filed: 1966-02-01
Abstract: 1,062,880. Centrifuge drums. HEIN, LEHMANN & CO., A.G. Feb. 1, 1966 [March 27, 1965], No. 4465/66. Heading B1D. Flow of air through centrifuge screen 14 to solid receiving chamber 32 is prevented by a hydraulic seal 21a caused by damming ring 20, which dams up centrifugal liquid into which the end 16 of continuous casing 15 extends. The ring 20 is attached to ring 18 by triangular members so arranged that solids that have passed through screeen 14 are washed by the liquid into compartment 23 through gaps between the triangular members, while solidfree liquid passes round the ring 20 into chamber 26. Ring 18 and ring 34 are of such outer diameter that the opposite suction effects due to this rings are equal so that there is no air flow into liquid receiving chambers 23 and 26. Screen 14 is supported on flat rings 13 which are mounted on bars 12, which bars are joined to drum 15.
Patent GB-482633-A (GB)
Title: Improvements in or relating to photographic light sensitive elements
IPC: G03C1/06
Filed: 1937-02-15
Abstract: 482,633. Photographic sensitive materials. KODAK, Ltd. Feb. 15, 1937, No. 4494. Convention date, Feb. 15, 1936. Drawings to Specification. [Class 98 (ii)] Alteration in acidity or hydrogen ion concentration of photographic emulsion layers due to material leaching from a contiguous or adjacent layer into the emulsion is prevented by the provision between the layer and the emulsion of a layer of inert hydrophilic colloid buffered at substantially the same hydrogen ion concentration as the emulsion by the addition thereto of an inert soluble weak acid or base with or without a salt thereof. The buffered layer may be placed between the emulsion and a cellulose nitrate support ; between the emulsion and a gelatine substratum particularly when a cellulose acetate or ester support is used ; on the back of the support, a substratum being provided between the emulsion and the support ; or may comprise the adhesive layer in a stripping film. A stripping film comprises a temporary paper support having a gelatine layer on one side and a baryta coating on the other, on which baryta coating is the buffered adhesive layer, the permanent cellulose nitrate support, and the emulsion. The adhesive layer may consist of glue or glue and dextrin, and may contain glycerine. A layer of dextrin may be coated directly on the paper and the buffered adhesive layer of glue or glue and dextrin applied thereto. A gelatine layer may be applied between the permanent support and the emulsion or between the support and the adhesive layer. In a film having emulsion layers on both sides, the support carries buffered gelatine layers, and if desired additional substrata, and finally emulsion layers on both sides. Abrasion preventing or anti-static layers may be coated over the emulsion. Buffered backing layers may contain dye to enable them to be used as anti-halation layers. The substrata may be of casein, agar-agar, cellulose derivatives or resins.
Patent GB-1131192-A (GB)
Title: Apparatus for withdrawing suspension rods from cathode plates
IPC: C25C7/08
Filed: 1967-01-30
Abstract: 1,131,192. Endless conveyers; lift trucks. A.B.C.J. WENNBERGS MEKANISKA VERKSTAD. 30 Jan., 1967 [8 Feb., 1966], No. 4512/67. Headings B8A and B8H. [Also in Division B4] An apparatus for withdrawing suspension rods 22 from cathode plates 20 which are advanced, one after another, by a conveyer 18 while suspended from the rods comprises a holding means 52 for gripping the plates while an extracting device is adapted to withdraw the rods. The extracting device includes tongs having a movable limb 102 and a fixed limb 104, the tongs being mounted on a carriage 98 which is movable by means of a ram 98, 100; the movable limb is actuated via a ram 108, 110. The cathode plates are moved by the conveyer 18 on to a forked support 40 which can be raised by a ram 50 and moved longitudinally by a ram 32, 34. The holding means includes jaw 52 movable inwardly by means of rams 72 in order to grip the plates 20, the jaws being pivotable through ninety degrees by means of chain- and-sprocket drive 76, 77 actuated by a motor 84 and raised and lowered by means of a ram 66, 68. In operation, when the forked support is full as shown in Fig. 2 it is moved by the ram 32, to bring the plates between the jaws which are then closed by the rams 72 to grip the edges of the plates. The extracting device is then operated so that the rods are withdrawn from the plates and deposited on to a ram-operated support 111, 114 within a magazine 94. The gripped plates are then rotated through ninety degrees and lowered on to a trolley 120. When the magazine is full of rods it is moved away on rails 90. The various rams of the apparatus may be pneumatically or hydraulically actuated.
Patent GB-944966-A (GB)
Title: Improvements in or relating to duplicate-writing appliances
IPC: B41L3/00
Filed: 1962-02-06
Abstract: 944,966. Book-keeping apparatus. H. WILSON. Nov. 13, 1962 [Feb. 6, 1962], No. 4569/62. Heading B6A. Book-keeping apparatus comprises a base 1 of synthetic plastic material, a metal strip 2 with a dovetailed groove therein secured to the underside of the base, and a slide member 7 of L-shape cross-section which slides within the strip 2, the slide 7 having two upstanding lugs 8 to locate a bound pad of slips or cards 21, and a clip member 11 pivotally mounted in lugs 14 on a metal plate 10 secured to the slide 7. The slide 7 and pad of slips &c. 21 can slide along the strip 2 between end stops, and a leaf spring arranged between the dove-tailed portions of the slide and the strip serves as a friction member to retain the slide in any position. Two or more record sheets 18 and carbon sheets 19 are located on pins 17 on the base 1, and are gripped by a spring clip 20. The loop 12 of the clip 11 embraces all but the bottom slip of pad of slips 21, so that when the clip is swung away from the base 1, only the bottom slip remains overlying the top record sheet 18 to enable entries to be made thereon. Holes 23 in the base 1 facilitate firing the apparatus in a folio.
Patent GB-248694-A (GB)
Title: Improvements in or relating to cooking stoves
IPC: F24C3/04
Filed: 1924-12-09
Abstract: 248,694. Pell, W. Guy-. Dec. 9, 1924. Atmospheric gas burners. - The gas heating-elements in a grilling-stove are adapted to be moved towards and from one another as described in Specification 249,059. The burner heads may be provided with means for controlling the number of jets in use, that shown comprising obstructors 28 upon a rotary spindle 29 within the burner.
Patent GB-104411-A (GB)
Title: Improvements in Relieving Mechanism for Weighbridges.
IPC: G01G19/04
Filed: 1916-03-30
Abstract: 104,411. Avery, W. & T., and Sykes, C. M. March 30, 1916. Relieving mechanism; weigh-bridges.-A relieving mechanism for use with single or " combined " weigh-bridges comprises a main relieving lever 6 coupled to an intermediate lever 1, from which the fulcrum of the usual transfer lever 4 of the weigh-bridge is suspended. Upon lowering the long arm of the relieving lever 6 by any suitable means, such as the worm gear 16, the transfer lever 4 is lowered, thus bringing the platform girders 18 on to fixed abutments and relieving the weigh-bridge. When applied to a " combined " weigh-bridge, each platform is provided with the above-described relieving mechanism coupled either to independent or to a common operating gear.
Patent GB-945064-A (GB)
Title: An axial-flow turbine
IPC: F01D25/12
Filed: 1961-02-08
Abstract: 945,064. Turbines. LICENTIA PATENTVERWALTUNGS-G.m.b.H. Feb. 8, 1961 [Feb. 8, 1960], No. 4681/61. Heading FIT. An elastic-fluid axial-flow turbine comprises at its high-pressure end an annular casing which is disposed coaxially with respect to the turbine shaft so as to surround the latter, the cavity within the annular casing being connected to the working fluid supply line. A number of channels are provided in the annular casing for passage of working fluid from the cavity to the first stage of the turbine, admission valves being provided to control flow of working fluid into the channels. The casing is formed with an axial cylindrical projection within which is disposed one of the turbine shaft bearings. In the turbine shown, the annular casing 11 is formed integrally with the turbine casing 44 the casing not being divided in an axial plane. Working fluid is supplied through a shut-off valve 21 to the space 13 within the annular casing and then passes through ducts 23 which lead first radially and then axially to the first stage 22 of the turbine. Each duct 23 is controlled by a valve 12, the valve member 15 of which co-operates with a valve seat 16. As shown in Fig. 2, there are five valves 12, spaced at intervals of 60 degrees, the shut-off valve 21 being disposed centrally between two of the valves 12 also at an angle of 60 degrees therefrom. The valves 12 are controlled by means of bellcrank levers 32 connected to the valves by means of links 40. The annular casing 11 is formed with a cylindrical extension 25 within which is disposed a turbine shaft bearing, the extension 25 having a cover 24 which provides a passage for the flow of cooling air to the bearing. A ring member 27 is rotatably mounted on the cover 24 and is formed with cam grooves 28 in which are disposed followers carried by the bellcrank levers so that angular movement of the ring member 27 produces a corresponding opening or closing movement of the valves 12.
Patent GB-970561-A (GB)
Title: Reactive dyestuffs of the monoazo-stilbene series
Inventor: BAKER RONALD
IPC: C09B62/465
Filed: 1962-02-07
Abstract: The invention comprises azo dyes of formula <FORM:0970561/C4-C5/1> wherein R is a chlorine atom or a nitro group, Y is a hydrogen atom or a C1-C4 alkyl radical, Z1 and Z2 are hydrogen or chlorine atoms, Z3 is a hydrogen or chlorine atom or a methyl radical and the benzene ring B may be substituted by methyl, methoxy, acetylamino or ureido groups. The dyes are prepared by treating an aminoazo dye of formula <FORM:0970561/C4-C5/2> with a suitable acylating agent e.g. acryloyl chloride, crotonyl chloride, a - or b -chloroacryl chloride, b  : b -dichloroacryloyl chloride, a  : b  : b -trichloroacryloyl chloride and b -chlorocrotonyl chloride.  The dyes may be used to colour viscose rayon, regenerated cellulose, wool silk and modified polyamide fibres but are preferably used to dye cellulose textiles in the presence of an acid-binding agent in reddish-yellow shades. The preparation of the dyes is described in examples.  The Provisional Specification describes dyes of the above formula wherein the following additional meanings for the various substituents and rings are specified:  R is a bromine atom or a cyano, acetylamino, benzoylamino, 11 : 21 : 4 : 5-naphthatriazolyl or acylamino group of the formula shown linked to B wherein Y is an hydrogen atom; Y is a substituted or unsubstituted alkyl radical; Z1 and Z2 are bromine atoms or alkyl or hydroxyalkyl radicals; Z3 is a bromine atom or an alkyl, hydroxyalkyl or carboxylic acid group and B which may also be a 1,4-naphthylene residue may be substituted other than by amino or monoalkylamino groups.  Suitable starting materials but no additional specific dyes are described.  Specification 885,814 is referred to.
Patent GB-163460-A (GB)
Title: A new or improved glazing bar for glass roofs or the like
IPC: E04D3/08
Filed: 1920-02-17
Abstract: 163,460. Young & Martin, Ltd., and Edwards, E. M. Feb. 17, 1920. Glazing. - In a glazing-bar of the kind having a tongue engaging a groove in a capping-strip, the tongue f and groove g are made wedge-shaped, and the packing-strips d, e of felt are treated with a heavy oily liquid of a preservative and antiseptic nature, such as wood-tar, &c. The capping is secured preferably by round-headed brass screws, and the groove and tongue are so dimensioned as to give suitable pressure on the edges of the glass on contact at the sides or base of the groove. The bar and capping are preferably made of wood.
Patent GB-684498-A (GB)
Title: Improvements in or relating to ship-propulsion plant
IPC: B63H23/00
Filed: 1950-02-24
Abstract: 684,498. Ship propulsion. NAAMLOOZE VENNOOTSCHAP KONINKLIJKE MAATSCHAPPIJ DE SCHELDE. Feb. 24, 1950. [Feb. 24, 1949] No. 4823/50. Class 114. [Also in Group XXIX] In a ship propulsion installation of the type comprising two propeller shafts connected to the engines by means of non-positive couplings, any deviation in the synchronous running of the shafts is detected and a correcting signal applied to one or more of the engines. The detecting and controlling mechanism comprises relatively rotatable sleeve valves 25, 26 connected to and rotating with the two shafts. Pressure oil is fed continuously to the interior of the inner valve through a passage 33, groove 34, and ports 35, 36, and when relative movement between the two valves occurs due to loss of synchronisation of the two propeller shafts, one of the pairs of ports 40, 41 or 50, 51 in the two valves will start to coincide and the pressure oil will flow either to the top or the bottom of a piston 91. The particular pair of ports which overlap is determined by the direction in which the relative motion between the valves takes place, i.e. the sense in which the loss of synchronisation between the propeller shafts occurs. Movement of piston 94 adjusts a valve 95 controlling the flow of pressure fluid to a piston 99 which is connected to a member controlling the flow of fuel to one of the sets of engines. The exhaust fluid from servo-piston 91 flows to exhaust passage 03 through a valve 31 which is similar to, and is integral with, the fluid pressure inlet valve 21. As shown, the system is duplicated and the two systems are connected together in such manner that the correcting movement of servo-motor 99<SP>1</SP> is in the opposite direction to that provided by servo-motor 99. If there is negative lap between the pairs of ports 40, 41, &c. the two sides of piston 91 are interconnected by a passage 103 which is adjustably throttled by a needle valve 104. Should the pressure oil supply fail, valve 95 will be opened by its loading spring 102 to ensure a full supply of fuel being provided for the engines.
Patent GB-1041001-A (GB)
Title: Programme switch
IPC: H01H51/08
Filed: 1964-02-05
Abstract: 1,041,001. Time switches. SAIA A.G. Feb. 5, 1964 [Feb. 6, 1963], No. 4868/64. Heading H2B. A programme control device, for washing machines, for example, comprises a plurality of cams 15 arranged along a common axis with corresponding control switches assembled in axial rows in units of three (one unit only being shown in Fig. 2). The three switches of each unit comprise fixed contacts 7 and 8 co-operating with bridging contacts 9 which can be lifted against springs 12 by cam followers 11. The three switches in each unit are staggered (Fig. 3, not shown), such that their followers 11 co-operate with different adjacent cam tracks. The cams 15 are stepped by a pawl 23 acting on ratchet wheel 26 and driven by oscillation of lever 21 by a cam 20. The cam 20 is carried on the end face of two cams coaxial with cams 15 operating similar switches and driven at one revolution in two minutes by a geared synchronous motor (Fig. 1, not shown). A member 29 coupled to the plunger of a solenoid (Fig. 1, not shown), can be moved thereby to lock the lever 21 on its lifted position and prevent stepping of cams 15.
Patent GB-588532-A (GB)
Title: Improvements in and relating to firebars for electric fires
IPC: F24H3/00
Filed: 1945-02-27
Abstract: 588,532. Electric fires. BARRIE, D. G. E. Feb. 27, 1945, No.4869. [Class 39. (iii)] A firebar for an electric fire comprises a rectangular backing 4 of refractory material carrying on one surface a heating element, the backing having at each end separate and adjustably attached edge portions 3 in which are notches 7 for securing the firebar to a carrying framework. The parts 3 have screws 6 passing through rearwardly extending flanges 5 on the backing 4, nuts 10 and 11 enabling the position of the parts 3 to be adjusted axially.
Patent GB-712779-A (GB)
Title: Improved method of and apparatus for drawing or stretching textile filaments especially of synthetic materials
IPC: D02J1/22
Filed: 1952-02-26
Abstract: <PICT:0712779/IV (a)/1> <PICT:0712779/IV (a)/2> <PICT:0712779/IV (a)/3> <PICT:0712779/IV (a)/4> <PICT:0712779/IV (a)/5> <PICT:0712779/IV (a)/6> Synthetic filaments are stretched to an extent which will orient the fibre in apparatus which comprises filament advancing means and filament take-up means which operate at different speeds and between which is interposed a friction device which is responsive to changes in tension in the filament and tends to maintain the tension at a desired value.  Filaments are fed from rollers 6 to rollers 61, Fig. 1, and are guided by pins 7, 8 through a tensioning device comprising pins 1 mounted upon a rotatable disc 2.  Anti-clockwise rotation of the disc 2 is opposed by a spring 5. The pins 1 are placed relatively to the guides 7 and 8 so as to define an S path.  Increase of the tension in the filament rotates the disc so as to straighten the path and diminish the frictional retarding force on the filament.  The spring may be replaced by a weighting device or electromagnetic means for opposing anti-clockwise rotation of the disc.  A modified tensioning device comprises a plate 12, Fig. 2, having a slot 13 in which slides a pin 11 from which is suspended a weight 14.  In a further modification the weight 14 may be replaced by a spring and the sliding pin 11 may be connected to the piston of a hydraulic damping mechanism.  In a modification, Figs. 5 and 6, the disc 48 is arranged vertically and is provided with a weighted arm 46, the position of the weight being adjustable. The pins 40 and 401 are connected to a plate 47 and are pivotally attached to a support 48 by a screw 43.  A hide disc 49 is interposed between the disc 47 and support 48 to provide a damping arrangement or a damping arrangement may be provided by electromagnetic means.  A further form of the friction device comprises a pivotally mounted elliptical cylinder 22, Fig. 3, rotation of which is opposed by a spring 26 and about which the filament takes one or more turns.  In this modification if the difference in the yarn tensions on each side of the cylinder 22 increases, the spring yields so that the cylinder 22 rotates in an anti-clockwise direction and the frictional drag on the filament diminishes.  In another modification, Fig. 4, two elliptical pins 30 and 31 are mounted on a pivoted arm 32, anti-clockwise rotation of which is opposed by an adjustable weight 34.