baber/WOPTO huggingface dataset:
Patent GB-697488-A (GB)
Title: New azo dyestuffs which can also be used as intermediates for the manufacture of other dyestuffs and process for their manufacture
IPC: C09B43/44
Filed: 1951-02-26
Abstract: Azo dyestuffs of the type R1-N:N-R2 where R1 is the residue of 1-amino-7-naphthol-3- or -4-sulphonic acid attached in the 2-position or of 2-amino-5-naphthol-7-sulphonic acid attached in the 1-position and R2 is a benzene or arylazo-benzene nucleus, are treated to replace the amino group by hydroxyl; such replacement is effected by (1) heating in an alkaline, neutral or acid aqueous medium; or (2) treating with a nitrite in acid aqueous medium.  The invention also includes the products of these reactions.  Preferred methods of carrying out the process are refluxing in neutral or alkaline solution, heating with aqueous caustic alkali in an autoclave at 140-150 DEG  C., heating with aqueous mineral acid, and treatment with nitrous acid.  The products may be used as coupling components for the preparation of disazo and polyazo dyestuffs which may be metallized.  In the examples (1) the dyestuff aniline-2 : 5-disulphonic acid --> (acid) J acid is boiled with water; (2) the dyestuff anthranilic acid --> (acid) J acid is autoclaved with caustic soda solution; (3) the dyestuff 2-aminoanisole-4-sulphonic acid --> (acid) J acid is autoclaved with caustic soda solution; (4) the dyestuff aniline - 2 : 5 - disulphonic acid --> (acid) 1 - amino - 7 - naphthol - 3 - sulphonic acid is refluxed with caustic soda; (5) the dyestuff 4-sulphoanthranilic acid --> (acid) 1-amino-7-naphthol-3-sulphonic acid is heated with caustic soda; (6) the dyestuff 5-nitroanthranilic acid --> (acid) J acid is refluxed with hydrochloric acid; (7) the dyestuff 4-sulphoanthranilic acid --> (acid) J acid is refluxed with hydrochloric acid; (8) the dyestuff 5-sulphoanthranilic acid --> (acid) J acid is refluxed with hydrochloric acid; (9) the dyestuff sulphanilic acid --> anthranilic acid --> (acid) J acid is refluxed with hydrochloric acid; (10) the dyestuff of (9) is treated with sodium nitrite and acid; (11) the dyestuff aminoterephthalic acid --> (acid) J acid is treated with sodium nitrite and acid; (12) the dyestuff 5-nitro-2-aminoanisole-4-sulphonic acid --> (acid) J acid is treated with sodium nitrite and acid; (13) the dyestuff 5-nitroanthranilic acid --> (acid) 1-amino-7-naphthol-4-sulphonic acid is heated with hydrochloric acid; (14) the dyestuff of (5) is boiled with hydrochloric acid; (15) the dyestuff 2-aminoanisole-4-sulphonic acid --> (acid) 1-amino-7-naphthol-3-sulphonic acid is refluxed with hydrochloric acid; (16) the dyestuff of (4) is refluxed with hydrochloric acid. Other starting materials are mentioned.  In general the substituents in R2 may be halogen, methyl, alkoxy, aralkoxy, aryloxy, cyano, trifluoromethyl, carboxylic acid, carboxylic ester, sulphonic acid, sulphonamide (which may be substituted by alkyl, aralkyl, aryl or acyl), nitro, amino, alkylamino, aralkylamino, arylamino, acylamino or arylazo. Specification 421,421 is referred to.
Patent GB-121876-A (GB)
Title: An Improved Device to Cause "Variable Compression" to any Internal Combustion Engine.
Inventor: SMITH NORMAN
IPC: F02B75/04
Filed: 1918-03-18
Abstract: 121,876. Smith, N. March 18, 1918. Cylinders, varying clearance of.-A small cylinder E is screwed into some convenient aperture in the combustion chamber. Its piston J is adjusted by a quick-threaded screw C working in a nut G. The movement of the piston is limited by a set-screw 4.
Patent GB-1415596-A (GB)
Title: Colour cathode ray tube arrangements
IPC: H01J29/72
Filed: 1973-01-31
Abstract: 1415596 Colour cathode-ray display tubes SONY CORP 31 Jan 1973 [3 Feb 1972] 4793/73 Heading H1D A colour c.r.t. includes temperature responsive magnetic means 1 for compensating for misregistration of electron beams on the phosphor screen due to thermally induced dimensional changes of a beam selecting element and to maintain colour purity, the magnetic means comprising a permanent magnet (2) (Figs. 1, 2 (not shown)) and a magnetic shunt element (3) having temperature responsive permeability, the shunt element engaging with the magnet to form a path for at least part of the flux originating in the magnet. Magnet (2) may be Ba-ferrite containing BaCo 3  and Fe 2 O 3  in the ratio 15 : 85 mol. per cent, and material (3) of Mn.Zn ferrite, e.g. Fe 2 O 3 , MnCo 3  and ZnO in the ratio 50 : 27: 23 mol. per cent. Components (2), (3) may alternatively be rectangular for example. Horizontal landing correction in a tube with vertical phosphor stripes and a slitted selecting electrode, six devices may be provided by six devices (Fig. 5, not shown), and in a shadow mask c.r.t. further devices as dotted may be provided. The magnets (2) preferably face outwards (Fig. 6, not shown). The magnetic permeability may decrease or increase with temperature, magnet mounting and deflection variations being discussed with reference to Figs. 7 to 10 (not shown). The magnets may also be mounted on the deflection coil holder or frame (10) of the mask (6) (Fig. 11 (not shown)).
Patent GB-590741-A (GB)
Title: Improvements relating to apparatus for time measurement
IPC: G04C3/027
Filed: 1945-02-26
Abstract: 590,741. Electric clocks..STOTT, H. T. Feb. 26, 1945, No. 4805. [Class 139] [Also in Group XL] A mechanism for counting the vibrations of a pendulum, balance wheel or other mechanical vibrator has a member carried by the vibrating member arranged to cause, during each vibration, light pulses of short duration to be directed to a photo-electric cell or other light-sensitive element. As shown in Fig. 1, a pendulum P carries at its bottom end a shutter d having a slit e through which a ray of light from a lamp f passes to photo-electric cell PC as the pendulum swings through its mid position. The photo-electric cell is in the circuit shown in Fig. 4 and the change in its resistance when a beam of light strikes it causes an impulse to go through said circuit to actuate relay L1, and close contact m from whence impulse is led to a clock dial, or a counter and also to means for maintaining the pendulum. Photo-electric cells PC 1 and PC 2, Fig. 1, are provided and are positioned to be illuminated if the pendulum overswings and to prevent temporarily the pendulum maintaining means from acting. Instead of a shutter the pendulum could carry a mirror which reflects a beam of light from a light source placed near the pendulum on to a photo-electric cell in the mid-position of the pendulum.
Patent GB-1236481-A (GB)
Title: A method of improving the behaviour of glass surfaces exposed to laser radiation
Inventor: DAVIT JEAN
IPC: C03C21/00
Filed: 1969-01-30
Abstract: 1,236,481. Treating glass surfaces. COMMISSARIAT A L'ENERGIE ATOMIQUE. 30 Jan., 1969 [2 Feb., 1968], No. 5152/69. Heading C1M. [Also in Division H1] The damage threshold of glass exposed to laser radiation (e.g. laser rods of doped glass) is increased by treating the glass surface with liquid dimethyl dichlorosilane before such exposure. OH- ions in the glass are replaced by -CH 3  radicals. The glass may be dipped in the liquid for approximately 30 minutes. The glass may subsequently be washed with water or alcohol.
Patent GB-256498-A (GB)
Title: Improved shop awning and sign support
IPC: E04F10/06
Filed: 1926-02-23
Abstract: 256,498. Goldberg, H. M. Feb. 23, 1926. TVindow blinds.-A combined shop awning and sign has positively actuated means to maintain the sign in upright position for any position of the awning. The awning 15 which is of the roller type is attached to the front bar 14 of a frame, the inner ends of the frame side bars being pivoted to a support 11 adapted to slide on guide, ways 12. Upper rods 20 parallel to the frame side bars are attached at their front ends to a sign 18 pivoted parallel to the front bar, and at their rear ends to sliding members 2i on the guide bars, forming a parallel motion for the sign. The sign may extend the whole length of the front awning bar or only along a portion of it. In a modification the inner pivoted ends of the side bars and parallel bars are pivoted to fixed supports, while in a further modification rock bars 30 and pivoted toothed quadrants 28 give the desired positive actuation to the sign. If the sign is to be illuminated the supports bars are formed as tubes to carry the necessary wiring.
Patent GB-621364-A (GB)
Title: Improvements in self-loading and tipping vehicles
IPC: B60P1/48
Filed: 1947-02-21
Abstract: 621,364. Loading and unloading vehicles. IRWIN, G. Feb. 21, 1947, No. 5196. [Classes 78 (iv) and 78 (v)] [Also in Group XXXI] A vehicle is provided with a self-loading and tipping receptacle the front and rear ends of  which are supported by separate means, said receptacle being mounted on a pivot movable in fixed guides so that, by suitably manipulating said supporting means, said receptacle can be positioned to force its lower edge under or into loosely-piled material when the vehicle is driven to raise and carry the material picked up, or to tip said material. In the embodiment shown, the receptacle b is mounted on the chassis a by pivots e carried by rollers movable along slots e<SP>1</SP> in guide members fixed on the chassis. The front or lower edge of the receptacle is connected to wire ropes h which pass over pulleys g<SP>1</SP>, mounted on arms g on uprights f<SP>1</SP> secured to the chassis, and pulleys j<SP>1</SP>, j<SP>2</SP>, j<SP>3</SP> mounted on a crossbar f connecting the uprights f<SP>1</SP> to a pulley block j<SP>4</SP> to which is attached a rope k wound round one barrel m<SP>1</SP> of a double-barrelled winch m. The upper or rear edge of the receptacle is connected at n<SP>1</SP> to ropes n passing over pulleys p<SP>1</SP>, p<SP>2</SP>, p<SP>3</SP> to a pulley block p<SP>4</SP> to which is attached a rope q passing over a pulley q<SP>1</SP> to a second barrel m<SP>2</SP> of the winch. The barrels m<SP>1</SP>, m<SP>2</SP> are separately controlled through clutches and the winch is driven through gearing from the engine of the vehicle. When the front edge of the receptacle is lowered by suitably manipulating the winch so as to rest on the ground, the vehicle may be driven to force this front edge into a heap of material and load the receptacle. The receptacle ,may now be swung into the dot-and-dash line position s and the vehicle moved to the discharging point. Here the receptacle is allowed to tip to the dot-anddash position t by manipulation of the winch, and empty. For digging into hard material the thrust of the vehicle may be increased by providing power-driven tracks u carried by arms u<SP>1</SP> which may be swung so as to bring the tracks into contact with the ground. These tracks may be driven from the engine of the vehicle or by a separate engine mounted on the chassis a.
Patent GB-1375875-A (GB)
IPC: E05F11/38
Filed: 1972-02-03
Abstract: 1375875 Window-operating device L C E MILLY 3 Feb 1972 [12 Feb 1971] 5207/72 Heading E2M In a window-operating device for car-door windows a casing 1 is moulded in a single piece from plastics material and is provided with connecting lugs, a drum-part reinforced by a metal tube 4 inserted during the moulding operation, a toothed sector 3 and a housing for retaining a balancing counter-spring 12 which bears on one end of a rocking arm 14 connected to a lower section of the window. A speed reduction gear 8, 15 is provided and a pinion 17, co-axially associated with the toothed wheel 15, engages an arcuate outer toothed sector 3 of the casing 1. A coiled spring 5 co-acts with the metal tube 4 to form a non-return member. Alternative embodiments are disclosed in the specification in which the toothed sector 3 is transposed onto an internal sector (19, Fig. 3, not shown) in a circumferential recess 22.
Patent GB-536081-A (GB)
Title: Improvements in life-saving and protecting suits
IPC: B63C9/093
Filed: 1940-03-21
Abstract: 536,081. Life-saving and protective garments. MORNER, H. G. March 21, 1940, No. 5306. Convention date, Sept. 13, 1939. [Class 1411 A life-saving and protective suit of the overall type having a front or side opening extending from the neck to the crotch and closable by means of interlocking tongued and grooved rubber strips closable by slide members, is, according to the invention, further provided at the opening and beneath the rubber strips with a sliding clasp fastener. The suit is made of rubber or similar water and gas tight fabric, and comprises a jacket portion 1, padded at 6 with kapok &c. integral trouser portions 4, and an elastic collar 5, and the front opening 7 being closable by interlocking tongued and grooved rubber strips 8, 9 extending. from the base of the collar 5 to the crotch. These strips are adapted to be closed by a runner slide 17 operable by a yoke piece 21 and provided with rollers 18 which engage recesses 20 on the outer edges of the strips. Further closing slides each comprising a bent metal strip 22 operable by a yoke piece 24 may be used, and these slides may be independently operated or may be linked together by chains for simultaneous operation. Beneath the strips 8, 9 the front opening is fitted with a sliding clasp fastener 25, 26, 27 which extends to the top of the collar 5. If the suit is to be used' as a protection against gas, it is fitted with a gastight cap and a gas mask.
Patent GB-344633-A (GB)
Title: Improvements in or relating to telephone pay stations
IPC: H04M17/02
Filed: 1930-02-17
Abstract: 344,633. Coin-freed telephone apparatus. TELEPHON-APPARAT-FABRIK E. ZWIETUSCH & CO., GES., 6, Salzufer, Charlottenburg, Berlin. Feb. 17, 1930, No. 5337. Convention date, Nov. 14, 1929. [Class 27.] In a telephone paystation of the prepayment type wherein collection or refund of coins occurs on the replacement of the receiver, means are provided which prevent refund until either the collecting magnet is operated or the connection is released. The Figure shows apparatus at the paystation. After removal of the receiver from the switchhook HU the coin is inserted in the slot 1 and is held in an intermediate position by a projection 7 on the switchhook. When the dial switch is operated a member MF tests for the presence of the coin which if absent allows a contact to short circuit the dial springs. Upon replacement of the receiver the projection 7 releases the coin the movement of which is again checked by projection 9 operated by a magnet Sp. If the call is effective, magnet KM is operated and the flap 4 is moved into the dotted position to allow collection of the coin in the chamber 2. In the event of an ineffective call magnet KM remains inoperative and upon release of the exchange selectors relay Sp is de-energized to permit refund of the coin through chamber 3.
Patent GB-833945-A (GB)
Title: Improvements in or relating to lithographic transfer sheets and method of making the same
IPC: B41C1/10
Filed: 1958-02-19
Abstract: 833,945. Electrostatic precipitation. RITZERFELD, W., and RITZERFELD, G. Feb. 19, 1958 [March 15, 1957], No. 5353/58. Class 39(1). [Also in Group XVI] In the manufacture of a transfer sheet for use in the preparation of lithographic printing master sheets, (see Group XVI), a paper carrier containing metal particles and coated with a composition comprising fat, wax, and/or a wax-like synthetic substance has electrostatically precipitated thereon a substantially non- fat-containing powdery material. As shown in Fig. 4, the coated carrier 28 is passed over heated rollers 29 and 30 and over an electrostatically charged plate 31. The non-fat-containing material 39 is distributed from a container 38 and passes through a charged grid of opposite polarity to the plate 31 whereby the particles of material are attracted to the carrier. Particles not adhering are removed by a charged trough system 40.
Patent GB-291156-A (GB)
Title: Improvements in or relating to spectacle or like frames
IPC: G02C5/20
Filed: 1927-02-26
Abstract: 291,156. Cornwell, E. T., and Cornwell, F. W. Feb. 26, 1927. Spectacles.-The side arms of spectacles comprise two parts 10, 12, adapted to be adjusted relatively to vary the length of the arm, provided with a clamping device 15 which may comprise a nut co-operating with a screwed and split conical end 14 to the hollow part 10. In a modification the inner part 12 is provided with circumferential grooves into which inwardly bent portions of the end 14 engage.
Patent GB-718299-A (GB)
Title: Arrangement for springing or insulating against road irregularities and shocks the rear wheel of a pedal cycle or motor cycle
IPC: B62K25/04
Filed: 1952-03-03
Abstract: 718,299. Spring frames for cycles. KAY, J. Nov. 5, 1952 [March 3, 1952], No. 5474/52. Class 136(3) In a cycle or motor-cycle frame the lower parts of the seat stays 13 telescope into the upper parts about one third of the way from the top of the seat stays. A portion of the lower part of each stay is of elliptical section. The telescopic movement is damped by a screw 17 passing through lugs 16 ir. the upper parts of the stays. Strengthening webs 14 are provided where the seat tube 11 and chain stays 12 join the journal 15 for the large sprocket.
Patent GB-766216-A (GB)
Title: Improvements in and relating to pumps or fans provided with an axial flow impeller
IPC: F04D19/00
Filed: 1955-02-23
Abstract: 766,216. Axial-flow pumps and fans. KONINKLIJKE MACHINEFABRIEK GEB. STORK & CO., N.V. Feb. 23, 1955 [March 5, 1954], No. 5495/55. Class 110 (1). In a pump or fan having an axial-flow impeller 1 through which the fluid can flow in either direction and having guide vanes 7 arranged at one side at least of the impeller, a fixed curved auxiliary vane 8 is arranged at the impeller side of each guide vane of a set of guide vanes and is circumferentially spaced from the corresponding guide vane. Reversal of direction of flow is effected by reversing the direction of rotation of the impeller. The guide vanes 7 are flat and axially disposed and are overlapped slightly in an axial direction by the vanes 8. The downstream vanes 8 deflect the fluid on to the downstream guide vanes 7, while the upstream vanes 8 have little effect on the flow of the fluid. If the pump or fan is used mainly for one direction of flow, the vanes 8 may be provided at one side only of the impeller, downstream with respect to this direction. The guide vanes 7 upstream with respect to this direction may then be omitted.
Patent GB-474875-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/24
Filed: 1937-02-24
Abstract: 474,875. Vacuum cleaners. JACKSON, L. MELLERSH-. (Quadrex Corporation) Feb. 24, 1937, No. 5503. [Classes 8 (i) and 8 (ii)] A vacuum cleaner comprises an annular motor-suction unit structure and has a cylindrical filter with a solid top, the operating- handle extending centrally therethrough ; a dirt-laden air-duct and a manually-emptyable, dirt-receiving compartment are arranged centrally between the suction inlet and filter. Means are provided for manually opening the filter top for inspection. The motorsuction unit 1 includes a casing 2 surrounding the motor and a fan 3. Dirt-laden air is exhausted from the fan into a chamber between the outer casing 4 and the unit 1. The outer casing has a partition 6 which separates an up-draught tube 7 from the dirt-receiving chamber 8. The filter is joined to a continuous ring 9. The chamber 8 may have a door or a removable dirt-receptacle. A blower cover 12 may be joined by screws 15 or by a hinge 13 and a manual attachment 14. The tube 7 may have a cover 16. The filter 20 has an updraught 21 leading to the top and communicates at the bottom with the tube 7. The filter has a hard fibre sleeve 22. The filter top 30 is secured to the sleeve 22, carries the operator's handle, has an inspection lift lid 32, carries a flexible lead-in for a cord line 33, holds a floor wheel 34, and may carry a cord hook 35. The handle has a switch 36. A strip of metal and fibre covers the electric connections. The filter is anchored between a ring 45 and the sleeve 22. In a modification, the entire top is hinged and may be opened. The cover may carry an automatically-releasable cord hook which may be snapped into the, vertical or horizontal position, and which operates in conjunction with a lower hook 65, Fig. 1. A fixed, spring finger holds the last turn. Modified forms of filter tops which may be opened for inspection are shown in Fig. 7 (not shown). In one construction the filter sleeve is made in two parts connected by a piano hinge and a latch and secured at the top by bayonet joints. Specifications 474,876 and 474,877 are referred to.
Patent GB-992416-A (GB)
Title: Improvements in or relating to implements for the lateral displacement of crop or like material lying upon the ground
IPC: A01D78/00
Filed: 1962-02-13
Abstract: 992,416. Haymaking machines. C. VAN DER LELY N.V. Feb. 13, 1962 [March 14, 1961; Oct. 31, 1961], No. 5521/62. Heading A1F. The rake-wheel type of haymaking machine described in Specification 914,096 and as shown in Fig. 1 is characterized in that it can be adapted to be pushed by a tractor by attaching the draw-bar 64 to the rearward end of the frame member 5, extending it by an auxiliary beam 97 arranged for connection to the tow bar 68 of the tractor and by providing an additional coupling bar 81 for pivotal attachment by a member 87 to the front of the tractor. The draw-bar 64 and beam 97 are telescopically adjustable whereby the machine can be turned about pivot 109 at the front of the tractor. The lever 46 which operates to lift the rake wheels is connected to a cord 47 operable from the tractor. In the case when the implement is front mounted the cord passes over a pulley 115. The coupling bar 81 forms the web of a U-shaped member fastened between the two frame members 5, 6 of the machine which is thus pushed by the tractor at a point which is lower than the frame members. In the embodiment shown in Fig. 9 the implement comprises two vertically spaced frame members 121, 122 and the coupling to the front of the tractor is formed by a bent member 152 pivoted to the frame member 121. When not coupled to the tractor this front coupling can be turned about its pivots 151 on the frame and can be held in position by a locking pin 161 passing through an apertured arm 162 on the frame. The frame of the machine is completed by two members 132, 133 extending over the rake wheels and being supported at their ends by a castor wheel 137. A coupling member 138 is used when the machine is trailed by the tractor.
Patent GB-575019-A (GB)
Title: Improvements in the mounting of pictures, photographs, designs, letter-press, and the like
IPC: A47G1/06
Filed: 1944-03-27
Abstract: 575,019. Picture &c. mounts. HOARE, R. R. March 27, 1944, No. 5589. [Class 11] A method of mounting pictures, photographs, letterpress, ribbons. &c. for display purposes consists in mounting the matter to be displayed centrally upon a backing sheet of cardboard &c. and applying a glass cover to this sheet, the cover being painted around its marginal portions with an opaque paint which also serves as an adhesive when pressed against the backing sheet. A layer of the same paint may be applied in a similar pattern to the backing sheet. The paint is preferably one with a cellulose base, e.g., a solution of cellulose nitrate, or one formed from resins in a solvent suitably plasticised. The backing sheet is preferably slightly larger than the glass cover, and after the two are united the sheet is trimmed and the edges coated with paint. The backing may be fitted with a hook for suspension, or with a hinged support. One edge of the glass may be left open for insertion of a changeable notice such as a calendar slip. To deal with thick pictures &c. surrounds of cardboard painted with adhesive on both sides may be used between the backing sheet and the glass.