baber/WOPTO huggingface dataset:
Patent GB-687567-A (GB)
Title: Drafting and measuring ruler
IPC: B43L7/00
Filed: 1949-03-25
Abstract: 687,567. Drawing-appliances. DOORNE, H. VAN. March 26, 1949 [April 19, 1948], No. 8197/49. Class 97 (iii). A drafting and measuring ruler having bevelled ruling edges 2, Fig. 1, subdivided in standard units, and interchangeable scale strips 14, 15, 16, Fig. 2, is characterized in that one or more scale strips lie in rectangular slots 4, 5 parallel to the base of the ruler and separated by a rib 6, with the strips immediately beside the subdivided ruling edges and held in the slots by a cover strip 7 attached to the rib 6, the cover strip extending on each side of the rib over at least one-half of the width of the scale strips. The cover-strip 7 may be permanently fixed to the rib 6 and chuck-plates 12, 13 may be fitted to the rib and cover strip for attaching the ruler to a drafting machine. As shown, the rib 6 is recessed at one or more points 18 to accommodate springs 17 which press the strips against their adjacent ruling edge. The strips may be of different widths and/or thicknesses so as to preclude insertion in the wrong slot and may have graduations on all four longitudinal edges.
Patent GB-1242342-A (GB)
Title: Electrostatic spraying apparatus
IPC: B05B5/16
Filed: 1969-02-14
Abstract: 1,242,342. Spray producers. TUNZINI-SAMES. 14 Feb., 1969 [14 Feb., 1968; 3 May, 1968], No. 8249/69. Heading B2F. [Also in Division H2] Electrostatic spraying apparatus incorporat ing a high voltage generator comprises a passage 12 with convergent-divergent portion 17capable of conferring a supersonic speed to a gaseous fluid flowing through said passage and electrode means 16 for transmitting electric charges to said gaseous fluid. Many suitable embodiments of the apparatus are described and illustrated, wherein the generator comprises an electrode 16 connected to a medium voltage source by cable 20, a counter electrode 17 earthed via the casing 22 and metal braid 23 covering the cable 20 and spray material supply pipe 6, and constituting a convergent-divergent nozzle whereby the gaseous fluid flow in passage 12 is at least partially supersonic. The charge may be collected by an electrode or wire, or by ball 24 and passed via spring 25 to metallic nozzle member 29, or directly to the material to be sprayed where the nozzle is non-conducting. The gaseous fluid may be humidified, e.g. by wick 32 from container 33, and may be used to atomise the spray material and/or to drive a rotary spray head. Whirling motion may be imparted to the gaseous fluid and/or spray material, flow of which may be controlled by trigger devices or pneumatically operated pistons. The generator device may be constructed as a detachable cartridge.
Patent GB-510000-A (GB)
Title: Improvements relating to linear dimension gauges
IPC: G01B3/22
Filed: 1939-03-15
Abstract: 510,000. Indicating-apparatus; linear dimension gauges. CAPP, A. March 15, 1939, No. 8342. [Classes 106 (ii) and 106 (iv)] In a linear dimension gauge similar to that described in' Specification 468,243, a spring pressed feeler 3 is mounted in guides in a body 9 so that it is capable of longitudinal rectilinear displacement, and the inner end of the feeler is rigidly connected to a wire helix 11 the convolutions of which .lie in a corresponding helical groove in a spindle rotatably mounted in the body 9 and carrying an indicating pointer. The pointer and its associated dial are covered by a glass 17. The helix operates the pointer against the action of a spiral balance spring.
Patent GB-1411874-A (GB)
Title: Process for the production of aniline-4-azo-4-naphthylamine-1
IPC: C09B41/00
Filed: 1973-02-21
Abstract: 1411874 Process for production of aniline- (4-azo-4-)-naphthylamine-1 BADISCHE ANILIN- & SODA-FABRIK AG 21 Feb 1973 [22 Feb 1972] 8478/73 Heading C4P An improved process is described for the production of aniline-(4-azo-4-)-naphthylamine-1 (Cellitazol STN) The process in which p-nitroaniline is diazotized, coupled with 1-naphthylamine, the intermediate nitro compound reduced with sodium sulphide and the dye separated from the molten liquor is modified by the addition of sodium sulphite to the reaction mixture to destroy excess sulphide. The reduction process may be carried out in caustic-alkaline solution at a pH of more than 9. The coupling reaction may be modified by adding the diazo compound to a suspension of 1-naphthylamine hydrochloride (prepared by dissolving the hydrochloride in an organic solvent which is miscible in all proportions with water, e.g. N-methylpyrrolidine, formamide, dimethyl formamide, glycol or acetic acid, and introducing the solution into dilute HCl). A combination of these features is particularly advantageous.
Patent GB-127884-A (GB)
Title: Improvements in Telephone Apparatus particularly for Use on Aeroplanes.
IPC: H04M9/00
Filed: 1917-06-13
Abstract: 127,884. Western Electric Co., (MatÚriÚl TÚlÚphonique Soc. Anon.). June 13, 1917. Head sets; portable sets; receivers; mouthpieces ; telephone systems.-In a telephone head and breast set for aviators, a depending spring 14, pivotally mounted at its end on the receivers 1, is connected to the transmitter 18, normally resting on the breast of the aviator, and controls contacts in the speaking circuit. The transmitter is protected from external vibration bv enclosure in a casing 21 of leather lined with cork, and is mounted on horizontal pivots and counterweighted so as to maintain a. vertical position. The casing 21 is provided with a hollow flexible gasket 23 shaped so as to fit the lower part of the face. A strap 24 passes round the neck of the wearer. The spring 14, enclosed in leather, passes beneath a metal plate 26 on the casing 21 and is connected by a ball joint 15, 16, Fig. 3, to the back of the receiver on which are mounted the circuit-closing springs 17, so that when the aviator inclines his head to speak, the movement of the receivers 1 relatively to the spring 14 closes the switch 17. The receiver 1, Fig. 2, is mounted in a leather casing 2 and is surrounded by a ring of cork 3, brass rings 4, 5, and a rubber gasket 6 enclosed in flexible leather. The receivers are secured to pieces of flexible leather 9, 10 connected by elastic bands 11. The instruments are coupled by plugs 31, 33 to a portable box containing a battery and coil.
Patent GB-178295-A (GB)
Title: Improvements in drilling machines
IPC: B23B45/06
Filed: 1921-03-18
Abstract: 178,295. Kenyon, E. A. March 18, 1921. Hand drills.-In drilling-machines in which the drill spindle is driven by bevel-gearing, a hubless driving-wheel is mounted in two ball bearings arranged on its periphery, a central axis for the driving-wheel being thereby dispensed with. In application to the hand drilling machine shown in Fig. 1, the drill spindle 25, Fig. 3, is mounted in ball bearings carried in lugs 6, 7 projecting from an annular part of the frame, and is driven through the bevel-gear 10 which runs in ball bearings at 12, 15, axial movement of the wheel being prevented by the thrust collar 9 and the cover-plate 16, the latter being screwed to the driving-wheel.
Patent GB-554887-A (GB)
Title: Improvements in frequency modulators for electric signalling
IPC: H03C3/14
Filed: 1942-06-22
Abstract: 554,887. Frequency modulation. GENERAL ELECTRIC CO., Ltd., and THOMPSON, G. T. June 22, 1942, No. 8531. [Class 40 (v)] Relates to frequency modulators using a thermionic reactance with a phase-shifting network comprising a capacity C<SP>1</SP>, Fig. 1, in series with a tuned circuit B as in Specification 542,675 ; and consists in adding series resistance r, Fig. 3, and shunt resistance R in the circuit B of such values that the deviation caused by a given modulating voltage MV (applied to the valve grid) is substantially the same throughout the working range W 1  to W 2  of the mean carrier frequency. The resistance r must be less than R and less than wL, but greater than wL/Q, for values of w within the range w, to W 2 , where Q refers to the circuit B without the added resistances. Moreover the condition W 1 W 2 C<SP>2</SP>rR = 1 must be satisfied where C represents the capacity Co plus the capacity C 1  and any adventitions capacity associated with Co. The series resistance r may be arranged in the inductive branch of the tuned circuit B as shown in Fig. 3, or divided between the inductive branch and the capacity branch. The actual values of the added resistors r and R should be reduced by amounts representing the dissipation of the inductance L and the capacity C of the circuit B. The main oscillatory circuit A and the tuned circuit B of the network each comprise a constant capacity, and their variable indutances are gang-controlled for varying the mean carrier frequency. The circuit A may have a slightly greater inductance than the circuit B so that the circuits resonate at the same frequency despite the added resistance in circuit B.
Patent GB-1089575-A (GB)
Title: High-power switch
IPC: H01H9/54
Filed: 1966-02-28
Abstract: 1,089,575. Arcing preventing in switches. BROWN, BOVERI & CO. Ltd. Feb. 28, 1966 [March 2, 1965], No. 8592/66. Heading H2B. A rectifier unit for shunting the contacts of a high-power switch, and wherein a control means then opens the circuit of the rectifier in the halfcycle during which it is non-conducting, comprises a column of disc-shaped semi-conductor rectifier elements (7) respectively separated by heat reservoir discs (8) of the same diameter as the semi-conductor elements but of sufficient thermal capacity to absorb the heat produced by a half-cycle of short-circuit current without a dangerous temperature rise, thus enabling relatively small semi-conductor elements to be used. The semi-conductor elements are of silicon and the heat reservoirs may be of molybdenum or tungsten. The column may be built up of cells each consisting of three discs in the sequence molybdenum silicon, molybdenum, the selected number of cells being readily soldered together for improving contact. Terminal leads may be brought out from the semi-conductor elements for connection to potential control elements or, if thyristors are used, to control apparatus.
Patent GB-373324-A (GB)
Title: Improvements in centrifugal machines for casting metals
IPC: B22D13/04
Filed: 1931-03-20
Abstract: 373,324. Casting-machines. CRAVEN BROS. (MANCHESTER), Ltd. and GREENWOOD, J. R., Reddish, Stockport. March 20, 1931, No. 8596. [Class 83 (i).] A centrifugal casting. machine comprises a horizontal rotating table a to which is hinged at c an internally tapered ring b, which can be fixed at d by a pin tc clamp a flask or chill holding ring e to the table. The ring e has an inturned flange to hold a bottom plate g. The mould shown in Figs. 1 and 3 consists of an annular chill i, a core m, having a bottom plate and projections defining three spiral runners p, Fig. 3, extending from a central hole t, and a top plate o. The core m is positioned by projections n on the plate g. The table a has spiral cooling ribs q.
Patent GB-899715-A (GB)
Title: Improvements in or relating to lubrication of conveyor systems
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: F16H57/05
Filed: 1960-03-11
Abstract: 899,715. Lubricating. KING Ltd., GEO. W. Feb. 28, 1961 [March 11, 1960], No. 8661/60. Class 12 (3). In a lubricating system for conveyer chains 10 lubricant is supplied intermittently to the connecting pins 11 via tubes 16, 17 connected by conduits 18, 19, respectively, to a mist lubricator 20. In operation, a star-wheel 27 meshes with the chain to actuate a microswitch 26 and cause periodic opening of a valve 23 which allows a supply of pressurised air to flow to the lubricator 20 and thus cause the oilmist to be sprayed on to the chain. The pressurised air is supplied from a source (not shown) and is passed through a regulator 24 and a cleaner 25. The spray discharged is regulated by a valve 28 on the lubricator 20. Foreign matter may be removed from the chain, prior to lubricating, by jets of air or liquid also controlled by the micro-switch.
Patent GB-579243-A (GB)
Title: Improvements relating to optical glasses
IPC: C03C3/074
Filed: 1943-05-31
Abstract: 579,243. Optical glass. CHANCE BROS., Ltd., BASTICK, R. E., and HAMPTON, W. M. May 31, 1943, No. 8681. [Class 56] An optical glass, particularly for photographic lenses, comprises 10-25 per cent SiO2, 10-35 per cent BaO, 10-20 per cent PbO (the barium and lead oxides together not exceeding 45 per cent of the whole), B2O3 10-26 per cent together with substantial quantities of both lanthanum and thorium oxides which together do not exceed 35 per cent of the whole, the lanthanum oxide being not greater than 20 per cent. One or more of the following oxides may also be added to the composition; beryllium, zirconium, zinc and aluminium. The refractive index of the glass is greater than 1.746- 0.0021V, where V-is-the AbbÚ constant and lies between 40 and 50.
Patent GB-582547-A (GB)
Title: Improvements in and relating to electric lamp signalling units
IPC: F21L14/00
Filed: 1944-05-08
Abstract: 582,547. Battery lamps. BRITISH THOMSONHOUSTON CO., Ltd. May 8, 1944, No. 8703. Convention date, May 11, 1943. [Classes 39 (ii) and 75 (iv)] A signal light comprises a lamp 10, having a thermostatic element 29 inside the bulb which breaks the circuit when the filament 25 lights up, mounted in a transparent watertight casing 22. When attached conductors are plugged into a battery the lamp flashes continuously for the life of the battery. The lamp casing is provided with a dome fastener 20 for attachment to the user.
Patent GB-657665-A (GB)
Title: Apparatus for grinding organic materials
IPC: B02C23/04
Filed: 1948-01-22
Abstract: A mill in which there is, during use, danger of fire, explosion or deterioration of the material being ground due to frictional heat generated by the grinding operation, is provided with grinding elements of a construction capable of grinding material in the dry state mounted in a completely enclosed housing communicating with an inlet conduit, containing a sealing means, for feeding dry material to be ground to the mill and with an outlet conduit, for the ground material, having air-excluding means and a mechanically operated, continuously operable discharge means, an inlet conduit with a regulating valve being arranged to introduce a cooling fluid into the mill under the control of means responsive to increases and decreases in the load or rate of feed of material being ground.  The mill described is identical with that described with reference to Fig. 1 of Specification 657,621.  The cooling fluid may comprise steam introduced as such into the mill.
Patent GB-215330-A (GB)
Title: Improvements in the construction of automobile vehicles
IPC: B60G11/08
Filed: 1924-04-08
Abstract: 215,330. Beltrami, C. May 2, 1923, [Convention date]. Frame components, forms of.-In a vehicle having the bodv 1 of streamline shape and the power unit 3, 15, 16 arranged at the rear, the frame comprises a single central member supported at each end by transverse laminated springs.
Patent GB-590053-A (GB)
Title: Improvements in or relating to self-sealing container for alcohols
Filed: 1945-04-11
Abstract: A composition containing a polyvinyl acetal or ketal having 10-40 per cent hydroxy groups and one or more organic non-acidic ethanol-soluble modifiers boiling above 200 DEG  C. at 760 mm. and compatible with the vinyl resin is used as a sealant interlayer in a compound fabric (see Group VIII) for self-sealing containers for alcohols.  Acetals and ketals specified are those obtained from polyvinyl alcohol and acetaldehyde, propionaldehyde, isobutyraldehyde, benzaldehyde, acetone, diethyl ketone and methyl ethyl ketone.  Modifiers specified are butanesulphonamide, N - (beta-hydroxy - ethyl) formamide, N-ethyl-o- and p-toluene sulphonamides, morpholine formamide, cyclohexyl formamide, allyl glycol amide, ethyl lactamide, dibutyl sebacate, dibutyl phthalate, di-(beta-butoxyethyl) glutarate, beta-methoxyethyl acetyl ricinoleate, butoxyethyl phthalate, triethylene glycol di-(2-ethyl) butyrate, di-methoxyethyl adipate, butoxyethyl levulinate, di-(beta-butoxyethoxyethyl) glutarate, dimethoxytetraethylene glycol, the formal of monomethoxy diethylene glycol, the reaction products of glycerol with furfural or cyclohexanone, glycerol, 2-nitro-2-ethyl-1,3-propanediol, tetraethylene glycol, p-tert-butyl phenoxyethanol, castor oil and castor oil monoglyceride.  Other substances which may be added are rosin, hydrogenated rosin, rosin turpentine resins, terpene-maleic anhydride, phenol formaldehyde, polyvinyl acetate, ethyl cellulose, urea-formaldehyde and coumarone-indene resins, alkoxymethyl nylons and carbon black.  In one of the examples, a polyvinyl butyral of 20 per cent hydroxy content, dibutyl sebacate, N-ethyl-o-and p-toluene sulphonamides, rosin turpentine resin, N-methoxy-methyl polyhexamethyleneadipamide and butanol modified melamineformaldehyde resin are mixed together, sheeted and cured.  The compositions may be cured by heating, preferably with dimethylolurea, dimethylolurea dimethyl ether, urea-formaldehyde resins, melamine-formaldehyde resins or bis-methoxymethyl uron.
Patent GB-663242-A (GB)
Title: Improvements in or relating to tilting doors
IPC: E05D15/44
Filed: 1949-04-04
Abstract: 663,242. Doors. DE VRIES ROBBE & CO., N. V. April 4, 1949 [April 2, 1948], No. 9071/49. Class 20(iii) A tilting door 3 adapted to close an opening 1 in a wall 2 is suspended by a hinged arm 5 pivoted to the wall at a point 6 on a level with the centre of gravity Z of the door and to the door midway between the centre of gravity and the lower edge 4 which is guided by means of a roller in the plane of the door. A weight 10 is rigidly secured to an extension of the door panels to bring the centre of gravity to the point shown : the door is of lightweight construction, e.g. aluminium sheeting. The lower guiding point 4 may be above the bottom edge which in this case projects outside the opening as the door rises.
Patent GB-583803-A (GB)
Title: Improvements in or relating to the prevention of "knock" in internal combustion engines
IPC: F02B77/02
Filed: 1943-06-07
Abstract: 583,803. Preventing "knock." HEATON, W. B., and TRINIDAD LEASEHOLDS, Ltd. June 7, 1943, No. 9099. [Classes 7 (ii), 7 (iv) and 7 (vi)] To reduce or prevent "knocking," one or more parts of the combustion chamber or other parts which come into contact with the fuel during the period of its combustion and are not subject to any scraping action of the piston are constructed of porous metal or are provided with a coating, layer &c. of porous metal containing in its pores a deposit of one or more oxides of the alkaline earth metals. The oxides may be obtained by impregnating the porous metal with a solution of the corresponding nitrates and then heating the mass to about 700‹C. in an inert atmosphere. The porous metal is prepared by heat and pressure treatment of the metal in powder form and may consist of nickel, the oxides being a mixture of those of barium and strontium. The coating &c. may be applied to a piston, valve, cylinder, sparking plug or other part of the engine provided it comes into contact with the fuel at the moment of combustion. Specifications 536,221 and 581,689 are referred to.
Patent GB-512962-A (GB)
Title: Improvements in looms for weaving axminster carpets and like tufted pile fabrics
IPC: D03D39/02
Filed: 1938-03-25
Abstract: 512,962. Looms with weft inserting needles. CARPET TRADES, Ltd., and READ, E. March 25, 1938, No. 9111. [Class 142 (ii)] In a jacquard Axminster loom of the gripper type, two weft inserting needles 8, 9 guided by slotted tubes 10, 11 are used, the upper needle having an arm 14a with a bracket 14, co-operating with a clamping plate 15 and an endless cord 16, whereby the upper needle is reciprocated. The lower guide tube 11 can be rocked by crank arms 19, a rod 20 and a cam to move a member 17 on the lower needle into and out of engagement with forked part 14b of the bracket 14, whereby the lower needle can be clutched to or unclutched from the upper needle. A weft may be first inserted by the needle 8 and afterwards wefts may be inserted by both needles. A lug 18 with an inclined face 18a ensures correct engagement of the member 17 with the. forked part 14b. Each needle has a tension device comprising clamping members 21 and complementary lever clamping plates 23 connected to cam-controlled bars 23a. The weft passes around spring loaded arms 25. The selvedge shuttles 28, 29 are operated by arms 26, 27 on a vertical spindle, which is oscillated to give a dwell. The shuttles are mounted in vases 33, 34, which carry a guide 35 for reciprocatory cam-operated selvedge needles 31, 32, which engage the weft loops. The tuft yarn knife is made in sections, the healds elongated and the reed slots deepened. -
Patent GB-1150262-A (GB)
Title: Improvements in or relating to Electric Discharge Lamps and Their Manufacture.
Inventor: RIGDEN SYDNEY ALFRED RICHARD
IPC: H01J61/36
Filed: 1966-03-02
Abstract: 1,150,262. Metal vapour lamps. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. 23 Feb., 1967 [2 March, 1966], No. 9180/66. Heading H1D. The exhaust tube 10 of a discharge lamp having an envelope 1 of a material containing more than 85% by weight of alumina, is made of a substantially non-ductile refractory metal or alloy-e.g. Mo-projecting through and sealed to a Nb closure member 3 sealed to the envelope, the tube itself being sealed by a plug of metal or alloy 11 having a lower melting point than that of the metal of the tube, and which alloys with the metal of the tube without the formation of any brittle intermetallic compound. If the tube is of Mo, the plug may be of Ti, Zr or V, or of an alloy of these metals, and a silicated tungsten lamp electrode 12 may be brazed with Ti to the inner end of the tube, the aperture 16 permitting evacuation and subsequent filling of the envelope. The end capexhaust tube assembly is sealed to the envelope by a Zr/V/Ti alloy 17 formed by interposing three washers of the above metals respectively and heating to 1400‹ C. under pressure. The lamp filling may be of mercury, sodium, and argon: the sodium, introduced into the exhaust tube in a metal capsule 18, vaporizes and enters the lamp when the plug 11 is heated to alloy with and seal the tube. In an alternative embodiment, the tube may be sealed to an intermediate member in the Nb end cap 3.
Patent GB-382207-A (GB)
Title: Method and machine for rolling cigars
IPC: A24C1/30
Filed: 1932-03-30
Abstract: 382,207. Cigar-making machines. KJAER, J. W., Holte, S÷ller÷d, Denmark. March 30, 1932, No. 9197. Convention date, March 30, 1931. [Class 130.] A tobacco filler 22 is lowered by a piston 21. The leaf 20 is retained at one side against a casing 12 by suction acting through perforations 13, and rests at the other side on a projection 17. The piston withdraws leaving the filler in the bend of the leaf, and a cam-actuated grooved roller 18 rolls the leaf about the filler. The pivoted, spring-held stop 23 rises into alignment with the plate 14 and the wrapped filler is continuously rolled as it passes between the plate 14 and the endless belt 8. Knives trim the ends, and as the bunch reaches an opening in the plate 14 the external wrapper is applied. Rolling is maintained during this operation by rollers 42, 43 which are successively raised to permit the bunch to enter and leave the gap in the plate 14. The raising is effected by cams 57 actuating racks 59 which engage segments 52. In gear with these are segments on the side-plates in which bear the spindles of the rollers 42, 43. Knife trimmings and similar tobacco residues are conveyed by suction through pipes 40 to a container 39. Form plates for non-cylindrical cigars may be inserted in the surfaces of the table 11 and plate 14.