baber/WOPTO huggingface dataset:
Patent GB-663831-A (GB)
Title: Optical projection apparatus
IPC: G01C21/22
Filed: 1947-10-05
Abstract: 663,831. Optical-projection apparatus. MARMOUR, A., and SOC. GENERALE DES METAUX NON FERREUX. Oct. 6, 1947 [Oct. 5, 1946], No. 26846/47. Class 97 (i). An apparatus for the projection of documents on to a ground glass screen comprises means for moving the document in its own plane across the light path from a source of illumination and a plano-convex magnifying lens located on the side of the screen away from the document, the space between the lens and screen being enclosed so as to form a camera obscura. As shown, the apparatus comprises a housing 23 in which is disposed the screen 15 and lens 16 and a frame 6 carrying the document to be projected. A rod 8 threads through a nut 7 carried by the frame 6 and the underside of the latter is provided with a rack 9 engaged with a toothed rod 10. Rods 8, 10 are selectively rotatable by a slidable knob 13 to move and the frame 6 in orthogonal directions in the plane of the document carried thereby. Beneath the frame is a housing 4 which encloses a parabolic reflector 2, lamp 1 and condensing lens 3, whereby light is directed through the document and an objective 5 on to mirrors 14 and the screen 15. Stereoscopic pairs of documents may be projected on to the screen 15, two lenses 16 being provided for viewing the images on the screen stereoscopically. A sunshade 17 is provided with a pivoted flap 18 which, when opened, switches on the light from lamp 1. A collapsible device 19 is also provided for positioning, when desired, an auxiliary document 20 in the light path. Above the lamp housing 4 or instead thereof may be mounted an episcopic illuminating arrangement.
Patent GB-1471470-A (GB)
Title: Oxygen valves
IPC: F16K1/30
Filed: 1974-06-18
Abstract: 1471470 Valves UNION CARBIDE CORP 18 June 1974 [19 June 1973] 26860/74 Heading F2V In a valve for connecting an oxygen cylinder to a pressure regulator, inlet pressure P1 bleeds through passages 23, 21 into a chamber 3 after a valve stem has been lifted manually until the outlet pressure P2 has risen to a predetermined value when a spring 25 lifts a plunger from the inlet to open the valve fully. Pressure surges are thus prevented. The stem may be operated by a hand wheel (9, Fig. 1). The plunger may be made from nylon or from brass or bronze with nylon inserts (18, Fig. 2) to engage the stem and the inlet. The passage 21 may be omitted if an adequate clearance is provided between the plunger and the stem.
Patent GB-151609-A (GB)
Title: Electrical resistances
IPC: H01C7/00
Filed: 1920-09-21
Abstract: 151,609. Lafeuille, J. L., (Assignee of Coeuille, J. F. and Unal, V. A.). Sept. 22, 1919, [Convention date]. Resistances are composed of one or more conducting elements in granular form such as retort carbon, graphite, carborundum, chromate, &c. mixed with one or more resistance elements such as asbestos, talc, kaolin, mica, lime, magnesia, calcium phosphate, zinc white, barytine, &c. with the addition of a cohesive element consisting of a very fine metallic powder of one or more metals such as aluminium, zinc, bronze, nickel, &c. For heating-resistances a refractory element may be added. The resistance is in pulverulent form rammed or compressed in a badly conducting casing. An example consists of 3 parts by volume of graphite having granules from 0.48 mm. to 0.40 mm. diameter, 2 parts of talc having granules from 0.20 mm. to 0.17 mm. diameter, and 1 part of aluminium in impalpable powder, the constituents being intimately mixed by stirring. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a resistance formed as an agglomerate by fusion, silicatization, compression &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-1040708-A (GB)
Title: Improvements in or relating to processing machines
Inventor: TAYSOM PATRICK ARNOLD
IPC: B23Q1/62
Filed: 1963-07-08
Abstract: 1,040,708. Machine tool details. STANDARD TELEPHONES & CABLES Ltd. July 3, 1964 [July 8, 1963], No. 26972/63. Headings B3B and B3C. A drilling or like machine comprises a vertically movable tool turret 1, a work-table 12 formed as an open frame, clamps 6 for clamping the work 5, a support 10 mounted below the table for aligning the tool being used, and also for supporting the work, and means for moving the table relative to the turret. Six drills are carried by the turret and they are guided by drill bushes in a plate 2, which is indexed along with the turret. The turret drive has a range of nine spindle speeds, and nine spindle feeds, the speeds being supplied by an electric motor, and the feeds being supplied by an hydraulic unit 4. Table 12 is slidable along rods 13, 14 by a shaft 15; the rods being supported on a frame 18, which in turn is movable along rods 19, 20 by a shaft 21. Clamps 6 are slidable on a bar 8, and a retractable work stop 22 is provided. Turret 1 and plate 2 are slidable on rods 30, Fig. 5 (not shown), and a plate device 31 controls the indexing of the plate to correspond with that of the turret, which indexing is effected pneumatically. As the turret is vertically movable the drive shaft 33 has a flexible coupling. Coolant is supplied to the drill and work via a pipe 36, Fig. 2 (not shown), the coolant being caught by a tray 37, Fig. 1 (not shown). A control unit 3, Fig. 1 (not shown) controls the machine by means of a punched tape which is read by an electromechanical or a photoelectric reader. Drive shaft 33 is driven by an electric motor through a belt drive. A variable-speed device for varying the spindle drive comprises a rotatable control shaft which is angularly adjusted to select the required speed. The shaft is driven through an electromagnetic clutch, by a reversible electric motor, which also drives a multi-position rotary switch through a gear train. The punched tape indicates that a particular speed is required, and the contact of the switch, the clutch, and the motor are energized. When the arm of the switch reaches the energized contact the clutch is disengaged, and the motor stops, thus stopping the shaft at the required position. The feed of the turret is effected by the hydraulic cylinder 4, a variable flow valve being used to vary the feed rate, and the required feed is selected by the tape and a second rotary switch, and a solenoid valve actuates the hydraulic cylinder. In operation, the workpiece is clamped by clamps 6, and stop 22 is retracted. A start button on unit 40 is actuated to start the feeding of the punched tape. Table. 12 is moved by hydraulic rams, and the feed and speed and the particular tool are selected. The first hole is drilled, and then the cycle is repeated after indexing turret 1 and plate 2. It is stated that the machine may carry out punching, forming, slotting or assembling operations.
Patent GB-426399-A (GB)
Title: Improvements in and relating to striplike razor blades
IPC: B26B21/26
Filed: 1933-10-02
Abstract: 426,399. Razors. ERN, R., 591, Vlierboomstraat, The Hague, and NIEPENBERG, K. F., 19, Kotterstrasse, Solingen, Germany. Oct. 2, 1933, No. 27097. Convention date, Oct. 4, 1932. [Class 30] A continuous strip-like blade for safety razors is provided with one or more ribs 2, 6<a>, 6b (Figs. 1, 2 and 3) extending longitudinally of the blade, at least one rib being provided with openings 4 to increase the flexibility of the blade. The Specification as open to inspection under Sect. 91 comprises also a razor (Figs. 1, 2, 5, and 7, Cancelled), the blade 1 being coiled at 2 and passing through a guide 4 and between a bridgepiece 8 and a cap 16. The cap 16 is part of an outer cover 15 secured to the body by spring studs 5 and the blade is released by pulling the cover 15 away from the body. The strip blade is also provided with spaced openings 10 which serve to locate the length of blade between pins 3, 3, in the bridgepiece and to enable the blade to be pulled round by a disc 11. This subject-matter does not appear in the Specification as accepted.
Patent GB-623002-A (GB)
Title: Improvements in dynamo-electric systems
IPC: D01B3/02
Filed: 1945-10-17
Abstract: 623,002. Smoothing direct currents; systems depending on two or more machines. BRITISH THOMSON-HOUSTON CO., Ltd., and PETCH, T. H. Oct. 17, 1945, No. 27134. [Classes 38 (ii) and 38 (iv)] [Also in Group XXXVII] Dynamo-electric machines are operated so as to afford in a variable voltage direct-current circuit the equivalent of a high-capacity condenser having no leakage. The armatures 11 and 12 of two direct-current motors, having suitable inertia, are mechanically coupled and are connected to a variable-voltage supply, the motor field windings 13 and 14 being separately excited from a constant source. Various constants of the motors and their associated circuits 'are so chosen that if the variable applied voltage attains a steady value for a period of time sufficient for the speed of the combination to reach a correspondingly steady value, the back-electromotive force of one of the machines, which acts as the condenser, becomes equal to that value of the applied voltage, the other machine serving to supply the mechanical losses of the first. Each armature may have resistances 17 and 18 connected in series therewith. A fly-wheel may be coupled to the armatures. The Specification contains a mathematical demonstration showing how the arrangement can be made equivalent to a circuit wherein a condenser having no leakage is connected across a variable voltage supply in series with the resistor 18. The applications to systems for timing the rate of closing of a contactor, and for affording a gradual rate of change of the exciting-current of a generator, are respectively illustrated in Figs. 5 and 8 (not shown).
Patent GB-440253-A (GB)
Title: Improvements in machines for producing helically toothed or fluted gears, cutters, hobs and the like
IPC: B23Q5/40
Filed: 1935-10-02
Abstract: 440,253. Making hobs &c. KLINGELNBERG, G. A., KLINGELNBERG, W. H., and KLINGELNBERG, H. W., (trading as KLINGELNBERG SOHNE, W. F.), 56, Berghauser Strasse, Remscheid, Berghausen, Germany. Oct. 2, 1935, No. 27207. Addition to 407,950. [Class 83 (iii)] [See also Group XXIII] The machine for relieving hobs &c. described in the parent Specification is modified by the provision of means for eliminating the backlash in the gearing driving the table lead-screw 1 so that the tool may operate on the work 25 during both forward and return strokes of the work-table 24. The lead-screw has an extension 3 carrying splined bushes 4, 5, supporting the members 8, 9 which together form a piston located between end flanges on the bushes. An annular member 10 located in a recess in the piston is screwed to members 11, 12 forming a fixed cylinder. A fixed sleeve 15 on the member 8 is screwed to receive a nut 16 which may be rotated by worm gearing 17 to adjust the clearance 18 between the piston and the nut face. Clearance chambers are also provided at 19, 20 and 21. Pressure fluid may be admitted selectively either to the pipe 23 and chambers 19, 21 or to pipe 22 and chambers 18, 20. In operation, during movement of the work-table to the left, Fig. 1, the chambers 19, 21 are open to pressure and the lead-screw is held in its left-hand position against the nut 16. On reversal of the worktable, the pressure is transferred to chambers 18, 20, thus moving the piston and lead-screw to the right to compensate for the backlash in the driving train. The movement is adjusted by means of the nut 16 which, for ordinary one-way working may be set so as entirely to prevent the piston movement.
Patent GB-599048-A (GB)
Title: Improvements relating to the manufacture of alkyl and alkenyl ethers of dianhydridesof hexahydric alcohols
IPC: C07D493/04
Filed: 1945-10-17
Abstract: Dialkyl and dialkenyl ethers of the dianhydrides of mannitol and sorbitol are manufactured by treating a dianhydromannitol or dianhydrosorbitol, or a mixture thereof (e.g. one obtained from the product of the hydrogenation of sucrose or invert sugar) with an alkyl or alkenyl halide or sulphate in the presence of alkali at 25-100 DEG C., and isolating the product by solvent extraction or distillation.  The products may be used as solvents, or plasticizers or modifying agents for cellulose esters and ethers, vinyl resins, acrylate and methacrylate resins, whilst the dialkenyl ethers may themselves polymerize to resinous products, which may be used as such or mixed with other resins.  In examples: (1) an aqueous solution of dianhydrosorobitol is stirred at 40 DEG C. while dimethyl sulphate and caustic soda solution are added gradually and, after neutralizing and evaporating to dryness, the resulting dimethyl dianhydrosorbitol is extracted into chloroform; (2) diethyl sulphate similarly yields the corresponding diethyl ether; (3) dianhydrosorbitol is stirred with excess of allyl bromide at 70 DEG C. while slowly adding caustic soda solution, the mixture is then steam distilled and the residue extracted with a solvent, e.g. ethers, to isolate diallyl dianhydrosorbitol; on passing oxygen through the product at 99 DEG C. it polymerizes to a gelatinous resin; (4) dianhydromannitol similarly yields diallyl dianhydromannitol and its polymer; (5) the ally bromide in (4) is replaced by crotyl bromide and the etherification is carred out at 100 DEG C., producing dicrotyl dianhydromannitol and its polymer; (6) dianhydrosorbitol, methallyl chloride, caustic soda solution and acetone are heated in an autoclave at 120 DEG C., the reaction mixture is diluted with water and steam distilled, and the residue is extracted with ether to isolate dimethallyl dianhydrosorbitol; (7) dianhydromannitol similarly gives dimethallyl dianhydromannitol; (8) dianhydromannitol is heated with methallyl chloride and caustic soda solution at 100 DEG C., the reaction mixture is cooled, diluted with water and allowed to separate into two layers, and the upper layer is fractionated to obtain dimethallyl-dianhydromannitol.
Patent GB-1310839-A (GB)
Title: Device for varying the pitch of propeller blades
IPC: B63H3/08
Filed: 1970-06-05
Abstract: 1310839. Variable pitch propellers INGENJORSFIRMAN S MAN AB 5 June 1970 [6 June 1969] 27360/70 Heading B7V A fluid pressure servo-motor device for adjusting the pitch of a marine propeller comprises an output member 10 and closure member 20 carried by an output piston 11, a spring loaded piston seat 19 movable in cylinder 31 to vary the flow of fluid through closure member 20 to and from chamber 13 in response to changes in pressure in chamber 18<SP>1</SP>, and a manually actuated control valve 40 for regulating the pressure in chamber 18<SP>1</SP> and thereby the propeller's pitch. Valve 40 (Fig. 3, not shown) comprises a floating piston closure member (55) subjected to the differential force of a pair of springs (56, 57) one of which (57) is adjustable by a screw (60) operated by hand control 59. A pitch graduated pressure gauge 41 is connected to chamber 18. As shown piston 11 is spring loaded but in a modification (Fig. 4, not shown) spring 14 is replaced by a fluid loading.
Patent GB-404766-A (GB)
Title: Improvements in pile driving equipment
IPC: E02D7/08
Filed: 1932-10-01
Abstract: 404,766. Pile-driving. ROTINOFF, A. G., Regent House, Kingsway, London. Oct. 1, 1932, No. 27329. [Class 68 (ii).] A pile-driving equipment adapted to be conveniently mounted upon a tractor or lorry comprises a jib a pivoted to a platform b, and suspended from the jib head d, guides c for a drop hammer e, and a head g by which the pile mandrel and pile sections are driven. To facilitate the placing of pile and mandrel sections, there is attached to the lower end of the guides c a swivelling crane-like fitting i, shown supporting a pile-section j. The fitting i swings upon an upright k secured to members h, h<1> which brase the guides c. The parts i, j are lifted by a wench m; the part being in position, part i is then raised and swung clear. The lower ends of the guides c have screw jacks o for stabilization, and wheels p fitted to enable the parts c &c. to be trailed on the ground when moving the equipment. Specification 402,754 is referred to.
Patent GB-245395-A (GB)
Title: Improvements in hot-water boilers or heating stoves
IPC: F24C13/00
Filed: 1924-10-11
Abstract: 245,395. Taylor, R. Oct. 11, 1924. Closed solid-fuel stoves: ashes, collecting: boilers, arrangement of.-In a stove of the kind in which a chute 10 is formed at the front of the grate to direct ashes into the ash-space, a trivet-door 13 is hinged just in front of the guide 9 forming the front of the chute so that it may either rest in an inclined position against the grate front, or be turned down to the horizontal position; the constriction avoids any gap. through which cinders might fall, between the lower edge of the door 13 and the guide 9. The ashpan 8 is provided with a front ventilator 19 behind which is a vertical baffle plate 20 to keep the ashes from it.
Patent GB-791278-A (GB)
Title: Improvements in or relating to fire extinguishers incorporating gas discharge indicators
Inventor: MITCHELL DONALD VICTOR FRANCIS
IPC: A62C13/00
Filed: 1954-09-22
Abstract: 791,278. Fire-extinguishing. KIDDE CO., Ltd., W. Sept. 21, 1955 [Sept. 22, 1954], No. 27446/54. Class 47 A gas discharge indicator positioned in the gas line of an inert gas type fire extinguisher comprises a body formed with a longitudinal bore having a gas inlet and having located therein a tell-tale member which normally obstructs passage of gas from the inlet to an outlet in the side wall of the bore, but which is moved under the gas pressure into a position past the outlet to permit unrestricted flow of gas between the inlet and outlet, the tell-tale member, or a member associated therewith being visible in either its normal and/or its displaced position. In a gas discharge indicator 1, Fig. 1, which is adapted to be connected between the outlet valve (not shown) and outlet horn (not shown) of a portable fire extinguisher, gas flowing along a passage 2 to outlet apertures 15 displaces a small rubber piston 14 to a position beyond the apertures 15 where it allows unrestricted egress of gas through these apertures. In its normal position, as shown, the piston 14 is visible through apertures 5 and a transparent tube 6, and displacement of the piston 14 from behind the apertures 5 is an indication of the passage of gas. A rod 16 carried by the piston 14 is forced out of the end of the device 1 when the piston is displaced and is visible in the outlet horn whereby it serves as a further indication of the passage of gas. The rod 16 also serves as means for resetting the piston. In another embodiment, Fig. 2, in which gas flows from a nozzle 27 into a body 21 and through apertures 30 to a rotatable outlet piece 22, a piston 34 is projected by_ the gas so that a striker 37 pierces or deforms a copper diaphragm 32 providing an indication of gas flow which can be detected either by the sight or by the touch. A washer 38 on the striker 37 acts as a buffer and prevents any substantial outflow of gas through the ruptured diaphragm. The diaphragm 32 'is retained by a circlip 33 which must be inserted or removed with a special tool so that the device cannot be easily reset in the event of unauthorized use.
Patent GB-823760-A (GB)
Title: Silicone compositions for imparting water-repellency to materials
Filed: 1957-09-02
Abstract: A composition for rendering materials waterrepellent comprises an aqueous emulsion of an organopolysiloxane containing Si-bonded hydrogen atoms and a catalyst obtained by treatment of a polyhydric alcohol ester of titanic acid with an alkaline-reacting organic substance, the content of the silxane preferably being between 0.5 and 6% by weight with the content of titanium varying between 0.1 and 0.5% by weight.  The preferred siloxanes have the formula RxHySiO 4-x-y/2 , wherein the ratio y:x is between 0.1 and 5, the sum x + y is between 1.2 and 2.1 and each R is methyl, ethyl, phenyl or vinyl. The catalysts specified are made by heating the ester obtained, e.g. by reacting TiCl4 with ethylene or diethylene glycol, 1 : 2- or 1-3-propane diol, 1 : 3-butane diol, glycerol or pentaerythritol, with from 1 to 6 molar proportions of an amine or aminoalcohol, e.g. diethylenetriamine, monoisobutylamine, cyclohexylamine, morpholine, mono-, di- or tri-ethanolamine or -isopropanolamine or any mixture thereof, as described in the parent Specification and Specification 812,505.  The compositions may also contain emulsifying agents and siloxane resins and liquids free from Si-bonded hydrogen atoms.  In examples, a catalyst solution made by heating the reaction product of TiCl4 and 1 : 3-butanediol with triethanolamine and diluting the resulting product with water, was added to (1) an aqueous emulsion of a methylhydrogenosiloxane oil, a methylsiloxane resin and an emulsifying agent; the emulsion of (1) containing also (2) an amylsiloxane resin, (3) a vinylsiloxane resin, (5) ethyl siloxane oil and an amylsiloxane resin; (4) an aqueous emulsion of methylhydrogenosiloxane oil, methylene chloride and an emulsifying agent.  The subject-matter of Specification 822,673 is disclaimed.
Patent GB-558091-A (GB)
Title: Improvements in or relating to torpedo tubes
IPC: F41F3/08
Filed: 1939-10-10
Abstract: 558,091. Launching torpedoes. BARKER, S. N., and SELMAN, G. S. Oct. 10, 1939, No. 27631. [Class 9 (ii)] A torpedo tube comprises a separate combustion chamber for the production of propellent pressure for the torpedo, the chamber being separated from the tube by a passage 18 through which the pressure gases pass, which passage converges in a streamline manner from the combustion chamber to a venacontracta 17 and thereafter diverges in a streamline manner. The passage is contained within a ribbed casting 12 disposed between the chamber and the tube and is protected at the combustion end by a grating 22 of mild steel dull nickel-plated. The grating may be provided with apertures 24 converging towards the narrow part of the passage or, alternatively, may be of dome-shape, with apertures perpendicular to its surface.