baber/WOPTO huggingface dataset:
Patent GB-297072-A (GB)
Title: Improvements relating to electrically operated sound reproducing apparatus
IPC: H04R1/20
Filed: 1927-06-14
Abstract: 297,072. Dunn, W. F. June 14, 1927. Magnetic instruments.- Relates to electrically operated sound reproducing apparatus wherein a universal joint which may be locked in an adjusted position is employed between the armature or coil and the diaphragm or soundboard. As shown in Fig. 1, the armature B of the electromagnet A is mounted on a pin D secured in a socket E which contains the spherical head g<1> of a screw G screwed into the bellybar H of a soundboard C. The armature and socket are supported in the casing for the electromagnet by a ring J having radial arms j'. The head g<1> is held in the socket E by a screw-threaded cup F which, during assembly of the apparatus permits a predetermined relative movement between the armature and sound board to overcome difficulty in obtaining correct alignment, but after the desired adjustment is effected, is tightened on to the socket E to lock the connection. The socket E may have a false bottom comprising a plate supported by a spring or a pad of rubber, and may be threaded externally to receive the locking cup. In a modification the socket may be fixed to the soundboard while the spherical body is fixed relatively to the armature or coil. In a further modification the connection comprises a rod having spherical ends, the spheres being located in sockets fixed to the sound board and armature or coil respectively. When a socket is provided with a false bottom the arrangement facilitates adjustment of the magnetic air-gap.
Patent GB-708651-A (GB)
Title: Optical bleaching agents
Filed: 1951-07-03
Abstract: The invention comprises fluorescent compounds of the formula <FORM:0708651/IV (b)/1> in which X means a direct linkage or the group -CH=CH-, Y is oxygen, sulphur or the -NH- group, and R1 is hydrogen, an aryl or unsaturated aralkyl group, and in which the aromatic nuclei may contain sulphonic acid groups.  They are prepared by p  condensing a compound of the formula <FORM:0708651/IV (b)/2> with an aldehyde or organic acid or functional derivatives thereof containing the radical R1, followed, if necessary, by sulphonation. In examples: (1) o,o1-dihydroxybenzidine is heated with benzoyl chloride or benzamide and the product sulphonated; (2) o,o1-dihydroxybenzidine is heated with cinnamic acid chloride and the product sulphonated; (3) 4,4-dibenzoylamino - 3,31 - dimethoxydiphenyl is heated with aluminium chloride, sodium chloride, and potassium chloride; (4) 3,31-diamino-4,41-dihydroxydiphenyl is heated with benzoyl chloride in nitrobenzene and the product sulphonated; (5) 3,31-dimercaptobenzidine hydrochloride is heated with benzoyl chloride in nitrobenzene; (6) the bisthiazole obtained in (5) is sulphonated; (7) 3,31 - dimercaptobenzidine hydrochloride is heated with o-chlorobenzoyl chloride in nitrobenzene and the product sulphonated; (8) 3,31,4,41 - tetra - aminodiphenyl is heated with benzoyl chloride in nitrobenzene, or 3,31-dinitro-N,N1-dibenzoylbenzidine is heated with tin and hydrochloric acid, and the product sulphonated; and (9) o,o1-dihydroxybenzidine is condensed with benzaldehyde.ALSO:The invention comprises fluorescent compounds of the formula <FORM:0708651/IV(c)/1> in which X means a direct linkage or the group -CH=CH-, Y is oxygen, sulphur or the -NH - group, and R' is hydrogen, and aryl or aralkyl group, and in which the aromatic nuclei may contain sulphonic acid groups.  They may be used as optical bleaching agents.  In examples for the preparation of such compounds, (1) o, o'-dihydroxybenzidine is heated with benzoyl chloride or benzamide and the product sulphonated; (2) o, o'-dihydroxybenzidine is heated with cinnamic acid chloride and the product sulphonated; (3) 4, 4-dibenzoylamino-3, 3\sv-dimethoxydiphenyl is heated with aluminium chloride, sodium chloride, and potassium chloride; (4) 3, 3\sv-diamino-4, 4\sv-dihydroxydiphenyl is heated with benzoyl chloride in nitrobenzene and the product sulphonated; (5) 3, p 3\sv-dimercaptobenzidine hydrochloride is heated with benzoyl chloride in nitrobenzene; (6) the bisthiazole obtained in (5) is sulphonated; (7) 3, 3'-dimercaptobenzidine hydrochloride is heated with o-chlorobenzoyl chloride in nitrobenzene and the product sulphonated; (8) 3, 3\sv, 4, 4\sv-tetra-aminodiphenyl is heated with benzoyl chloride in nitrobenzene, or 3, 3\sv-dinitro-N, N'-dibenzoylbenzidine is heated with tin and hydrochloric acid, and the product sulphonated; and o, o1-dihydroxybenzidine is condensed with benzaldehyde.
Patent GB-740068-A (GB)
Title: Oil-diverting means for sewing machines
IPC: D05B71/00
Filed: 1954-05-28
Abstract: 740,068. Sewing-machines. SINGER MANUFACTURING CO. May 28, 1954 [June 12, 1953], No. 15816/54. Class 112. [Also in Group XXXIV] A sewing - machine is provided with an eccentric 22 secured upon a rotary main shaft 23 and adapted through the medium of an eccentric strap link 24 to impart vibratory motions to a take-up arm 28 and thereby take up slack in the needle-thread when the needlethread loop has been shed by the looper, and means are provided for preventing oil for lubricating the eccentric from being thrown on to the work by the take-up arm 28, the means comprising an L-shaped oil-diverting sheet metal finger 35 secured between the arm 28 and the link 24. The free end of the finger extends rearwardly so that any oil which may reach the finger is finally deposited into the rear portion of the machine for delivery to the oil sump. The finger 35 is formed with a ledge 39 which partly surrounds the upper part of the link 24. The sewing machine shown has a main casing 10 which carries over-edge stitch forming mechanism comprising an oscillatory needle 11 an under loop-taking looper 12 and an over-edge looper 13. Trimming mechanism comprises a trimmer-bar 18 pivotally mounted on a stud 20 and vibrated by means of the eccentric 22 and the link' 24. The eccentric 22 is lubricated by an oil wick 31 extending through a tube 32.
Patent GB-547731-A (GB)
Title: Improvements in grinding machines
IPC: B24B5/16
Filed: 1940-10-29
Abstract: 547,731. Grinding. BRYANT CHUCKING GRINDER CO. Oct. 29, 1940, No. 15832. Convention date, Oct. 30, 1939. [Class 60] Two or more grinding-tools are mounted on a carrier which is traversed parallel to the axis of the work and can be rocked laterally to present the selected tool to the work, each tool being provided with lateral-feed means. In the machine shown in Figs. 3 and 5, rough or finish grinding-wheels 20, 21 are mounted on an arm 25 on a bar 26 which can rock and move axially in bearings. A motor 30 on the arm drives a pulley 37 which is connected by a belt 36 to pulleys 40, 38 on the grinding-wheel shafts 22, 23. The work-piece 14 is mounted on a holder secured to a driving-spindle and provided with a mandrel having clamped thereon a sleeve provided with a spline for engaging a groove in the work. On removal of the clamp, the work-piece can be turned end-to-end to present one or other of two internal surfaces of different inclination to the appropriate grinding-wheel. When the grinding- wheel 20 is operative, the arm 25 is in forward position, this being determined by means of a track 91 on the framework, and a co-operating roller 90 on a slide 93 which is mounted in a bracket 45 on the arm and can be raised by means of a lever 95. During grinding, the arm is moved axially to feed the grinding- wheel by co-operation of a cam-part of a plate 60 on the arm with a roller 61 on a shaft 62 which is axially adjustable by means of a screw operated by a hand-wheel 65. To render operative the grinding-wheel 21, the roller 90 is raised, the arm 25 is swung to the rear, and the roller is then allowed to engage a track 92. Feed of the grinding-wheel is effected by cooperation of a cam-part 100, 102, Fig. 5, of a plate 64 on the arm with a roller 70 on a shaft 71 which is axially adjustable by a screw 74 geared to a hand-wheel 65, The grinding-wheel 20 or 21 can be trued by a tool 115, the contour being determined by co-operation of the roller 70 or 61 with a cam-part 101, 103 on the plate 64 or a cam-part on the plate 60 during traverse of the arm 25. The cam-parts may be separate from the plates. The Specification as open to inspection under Sect. 91 comprises also description of a trueing- tool mounting. This subject-matter, does not appear in the Specification as accepted but now forms the subject-matter of Specification 547,762.
Patent GB-417841-A (GB)
Title: Calculating device
IPC: G06G1/00
Filed: 1934-05-28
Abstract: 417,841. Calculating-apparatus. WELLINGTON, B. R., 17, 1st Street, Troy, New York, U.S.A. May 28, 1934, No. 15853. [Class 106 (i).] A device for use in solving arithmetical, algebraic, and trigonometrical problems comprises a frame 1, Fig. 1, of triangular form with attachable scale bearing members 2, 3 arranged at right angles and jointed at the angle, a slide 20 adjustable along the scale member 3 carrying a protractor and a pivoted hypotenuse scale bar 25, and a diagonal scale member 34 slidable through undercut grooves at the corner of the scale members 2, 3 and provided with limbs 36, 37 at right angles for cooperation with lugs 18, 19 on slidable scales 14, 15 on the members 2, 3. The members 1, 2 and 3 are held together by spring clips 7, Fig. 3, and are formed with tongued and grooved edges and the slide 20 is formed to slide on a track formed in the frame 1 and member 2. The scales on the members 2, 3, and 25 are equal and uniform, while the scale on the diagonal member 34 represents the squares of the numbers of the scales 11, 12. Modified forms of the mounting of the members and of the slide are described. Examples of the use of the device are set forth in the Specification. A curved track 65 mounted on the member 1 and engaging a pin on a slide 40 on the bar 25 may be provided for use in solving quadratic equations.
Patent GB-529335-A (GB)
Title: Improvement in process for roasting ore
IPC: C22B1/10
Filed: 1939-05-30
Abstract: 529,335. Roasting ores. CARTER, B. M. May 30, 1939, No. 15862. [Classes 1 (ii) and 1 (iii)] In suspension roasting, the superfluous heat of the highly exothermic oxidation of metal sulphide fines, e.g. iron pyrites flotation concentrates, pyrrhotite, low grade coal brasses or coal refuse, or elementary sulphur, preferably finely divided, is usefully applied to the decomposition of waste metal sulphate fines, e.g. ferrous or ferric sulphate from waste pickle liquors ; both materials being suspended in an oxidizing gas which may be pre-heated. When using iron sulphate, both materials yield a relatively free-flowing cinder of predominantly magnetic oxide desulphurized to not more than 0.5 per cent. sulphur and a 15.5 per cent. sulphur dioxide gas. The sulphate fines are preferably dehydrated to not more than one molecule of water. Zinc and other metal ores may also be treated, while two metals may be present if no disadvantage arises. Detailed examples are given. The sulphate supply is regulated to maintain the combustion zone temperature above the sulphide ignition point, say at 985-1040‹C. for iron sulphide, and preferably above the dissociation temperature of sulphur trioxide though never above a maximum of 1040‹C. since then the oxide cinder is no longer free flowing but fuses to form a solid cake. As shown in Fig. 1, the mixed materials are fed at 18 into the roasting chamber 17 of shaft furnace 10 having an insulating layer 14 between cylindrical steel shell 11 and firebrick lining 15. The sulphur dioxide proceeds via outlet 33 to a supplemental combustion and dust settling chamber 35, connected by flue 37 to a chrome-steel heat exchanger 40, linked by conduit 46 to a similar exchanger 50 of ordinary steel. Atmospheric air at 40‹C. supplied by blower 53, is preheated to 260‹C. in exchanger 50 and proceeds at 510‹C. from exchanger 40 to air inlet 30 of furnace. The sulphur dioxide continues through pipe 63 to a small cyclone separator 65 followed by a wet purification plant, drying system, blower, contact unit and absorption system for sulphuric acid recovery. In a modification the heat exchangers are replaced by a waste heat boiler delivering steam or hot water, but the non-pre-heated air blast must be dried in a tower to minimize condensation of sulphuric acid in the boiler. Furnaces wherein separate injectors or an upward injection of the solid ores are involved may be used.
Patent GB-515190-A (GB)
Title: Improvements in or relating to electron emitters for discharge tubes
IPC: H01J9/04
Filed: 1938-05-27
Abstract: 515,190. Electrode materials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 27, 1938, No. 15894. Convention date, May 27, 1937. Drawings to Specification. [Class 39 (i)] A method of making an electron emitter for discharge tubes comprises applying a layer of magnesium oxide and a nitrogenous compound of barium to a metallic core and heating the coated core in a non-oxidizing environment to cause the oxide to adhere to the core and to reduce the barium compound to metallic barium so as to make the said layer electron emissive. The electrode is made by painting or spraying pure magnesium oxide in water or an organic binder such as nitrocellulose on to a nickel core to a thickness of .5-1 inch, and drying. The barium may be added in the form of the azide, either in. the magnesium-water mixture or by subsequently soaking the electrode in a concentrated solution of the azide, or by applying a very thin layer by spraying or coating to the core, before the magnesia. Barium fluoride may be mixed with the magnesia. After coating the electrode is heated in a non-oxidizing environment to 650-700‹C. for a short time to drive off the nitrogen and bring metallic barium to the surface. If the electrode is to be used as a secondary emitter the thickness of the barium on the surface is increased either by using stronger azide solutions or increasing the number of dipping operations. An indirectly heated tubular cathode is described and illustrated. The Specification as open to inspection under Sect. 91 states that the barium may be alloyed with the refractory core-metal, the barium being dispersed into the magnesium oxide coating on heating. This subject-matter does not appear in the Specification as accepted.
Patent GB-1105479-A (GB)
Title: Plasma burner
IPC: H05H1/40
Filed: 1966-04-12
Abstract: 1,105,479. Wind tunnels. SIEMENS - SCHUCKERTWERKE A.G. 12 April, 1966 [12 April, 1965], No. 16036/66. Heading B7G. [Also in Divisions F1 and H5] Air for use in a wind tunnel is heated in an are heater (see Division H5) comprising a chamber 7 into which air is introduced tangentially through holes 27 and is heated by a rotating arc 6 between electrodes 1, 5.
Patent GB-1527292-A (GB)
Title: Electrolytic flotation
IPC: C02F11/12
Filed: 1976-04-21
Abstract: 1527292 Electrolytic flotation SIMON-HARTLEY Ltd 13 April 1977 [21 April 1976] 16050/76 Heading C1C In a process for the electrolytic flotation treatment of sewage sludge, the sludge is treated with sulphuric acid.
Patent GB-1221101-A (GB)
Title: Convergence deflection system for a color picture tube
IPC: H01J29/51
Filed: 1968-04-03
Abstract: 1,221,101. Cathode-ray tube circuits. SONY CORP. 3 April, 1968 [6 April, 1967 (2)], No. 16118/68. Heading H4T. In colour television receiver utilizing a singlegun three beam picture reproducing tube 5, Fig. 1, in which electron lens means L<SP>1</SP>, L act on the beams to direct one (B G ) along the tube axis and to cause the other two (B B ), (B R ) to diverge so that they pass between respective pairs of deflecting plates P<SP>1</SP>, Q<SP>1</SP> and P, Q static convergence of the three beams is effected by a deflecting voltage V c  applied between the plates of each pair and generated by rectifying by diode 26 the voltage developed in a winding 24 on the line (horizontal) output transformer 21. The converged beams then pass between adjacent grid wires gp of a grid Gp and impinge on appropriate ones of a repeating series of vertically extending colour strips on the tube screen S and to ensure convergence throughout each horizontal scan a dynamic convergence correction voltage V<SP>1</SP>C having aparabolic waveform is generated by the integrating effect of an inductor 31 and a capacitor 30 and combined via capacitor 29 with the static convergence correction voltage Vc so that the voltage between the deflecting plates = Vc + Vc<SP>1</SP>. This voltage " stands-on " a high voltage V Q , produced by rectifying in diode 33 the voltage across a further winding 23 on transformer 21 and provides a voltage V p  = V Q  + V c  + V c <SP>1</SP> which is connected to the deflecting plates P, P<SP>1</SP> the electron leans elements G3, G5 and to the screen S by connection means (not shown) internal of the tube. An advantage of the arrangement is that when the voltage Vp varies due to tube current variations caused by variations in pictire brightness the ration VC/VP is unaltered so that static convergence remains unchanged. Another advantage is that since the high anode voltage VP is derived from the sum of (two) lower voltages insulation requirements are not so stringent. A modification of the arrangement of Fig. 1 in which the diode 26 is reversed and the terminals 32a, 32b connected to terminals 34 and 35 respectively (instead of to 35 and 34 respectively) is described with reference to Fig. 2 (not shown). This arrangement however does not provide the feature of maintaining a constant ratio of VC/VP. A two-piece insulated housing containing the winding 24 and the circuit elements 26-31 and which is supported by the core of transformer 21 with winding 24 surrounding the core is described with reference to (Figs. 3 and 4, not shown).
Patent GB-120428-A (GB)
Title: Improvements in and relating to Appliances for Spraying Tar and Distributing Stone Chips on to Roadways and the like.
Inventor: HENDRY WILLIAM
IPC: E01C19/21
Filed: 1917-11-07
Abstract: 120,428. Hendry, W. Nov. 7, 1917. Surface treatment with liquid or semi-liquid materials.-Relates to apparatus for spraying tar and distributing stone chips on to roads, of the kind in which a wagon for chips is fitted at the rear with a chip-distributor, in the form of an open-topped hopper having a bladed or spiked shaft, and with a tar spray having a pipe flexibly connected to a tar boiler coupled up in front. According to the invention, the hopper and the tar spray are removably secured to an ordinary end-tipping wagon without structural alterations in the wagon. In the construction shown, the hopper 12 is bolted to the undersurface of the wagon 1, and contains a rotary bladed or spiked shaft 17 driven from the road wheels of the wagon. The tar-distributor 10 is supported by brackets 6 fixed to the wagon, and the pipe 4 passes freely through an eye 8 carried by a bracket on the rear axle.
Patent GB-150855-A (GB)
Title: Improvements in fittings for metal aircraft construction
IPC: B64C3/00
Filed: 1919-06-28
Abstract: 150,855. Mooney, D. J., and Underwood, F. B. June 28, 1919. Securiug-stays; guy-ropes.-The wires of aircraft, such as the drift wires for bracing t.he wings, ara attached to pulleys bearing in loops of wire or metal strip the ends of which are attached to the spar, longeron, &c. Fig. 1 shows bracing- wires k connected to pulleys : i bearing in wire loops g attached at their ends to projections e formed on plates b secured to the top and bottom of the spar a. A turn-buckle may be inserted between the wire k and the pulley. Fig. 2 shows a fitting for connecting a single wire k; the edges of the plates b may be bent to form flanges l fitting in the corrugations of the spar. Fig. 4 shows a loop composed of a metal strip m attached directly to the spar. The projections e may be formed on the saddle-plates used to connect the wing-ribs to the spars.
Patent GB-515485-A (GB)
Title: Improvements in and relating to motor road vehicles
IPC: B60G11/18
Filed: 1938-06-01
Abstract: 515,485. Vehicle spring-suspensions. WORKS DEVELOPMENT CO., Ltd., and EHRLICH, J. June 1, 1938, No. 16363. [Class 108 (ii)] In a motor vehicle having a central tubular chassis frame 1, the wheels are independently mounted on articulated semi-axles 12 .... 15 which are resiliently supported on the frame 1 by means of torsion rods 16...19. The torsion rods 16... 19 may be entirely independent or as shown, comprise two rods only passing at intermediate points through a platform or bracket 26, to which the body is bolted and which is formed of -two halves embracing the frame 1. The engine is supported at the rear of the vehicle, preferably over the rear axles 12, 13 and drives the rear wheels through the intermediary of a chain wheel 28, a single drive shaft 28a, universal joints 31, 32 of the rubber disc type, and axle shafts 29, 30. Additional springs may be inserted directly between the body and semi-axles.
Patent GB-724493-A (GB)
Title: Improved floodlight
Inventor: ROBBINS EDUARD RUBINI
IPC: F21V17/00
Filed: 1953-06-15
Abstract: 724,493. Projector lamps. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 15, 1953, No. 16405/53. Class 75 (4). In a floodlight comprising a reflector housing 1, a lampholder housing 2 and a reflector 3 secured at its front end to the reflector housing, the lampholder housing 2 comprises a cylindrical body coaxially disposed with respect tothe reflector and having two offset outwardly flared portions at its front end, one flared portion 9a forming a seat to which the rear portion of the reflector housing is permanently secured and the other flared portion 9b extending externally of and supporting the rear portion of the reflector. The reflector is secured to the flared portion 9b by thumb screws 12 which, pass through radial slots in the reflector and engage threaded bushings on the flared portion. The front end of the reflector has an outwardly extending flange 3a abutting a corresponding flange la on the reflector housing. A glass cover 15 abuts the flange 3a, and a clamping ring 14 secured by screws to the flange 1a of the reflector housing abuts the-glass cover. The lampshade 7 is secured to a plate 8 adapted to travel along rods 18, 19 disposed, parallel to the axis of the reflector. The plate has a bush 20 which slides along the rod 18 and another bush 20a which is in threaded engagement with the rod 19. The rods 18, 19 are supported by an inner end wall 22 of the lampholder housing and by a member 23 carried by the other end wall 24 and the rod 19 is rotated by a gear 25 meshed with a gear 26 on a shaft 27 passing through the outer end wall 24 and connected to a hand wheel 28. The reflector housing is pivotally mounted on a stand 4.