baber/WOPTO huggingface dataset:
Patent GB-755354-A (GB)
Title: Improvements in reclining chairs or like furniture
IPC: A47C1/0355
Filed: 1954-04-29
Abstract: 755,354. Reclining chairs. BANK, A. M., and KATZ, A. J. April 29, 1954, No. 12414/54. Class 52(2). The seat 27 of a reclining chair is carried by linkwork 91, 143, 150 causing it to tilt at its front and move rearwardly as the back rest 28 is titled and a normally vertical footrest 29 is simultaneously elevated and projected forwardly by a lazy tongs linkage pivoted at 156, 159 to the seat frame. A friction shoe 96a operating on the link 91 holds the parts in adjusted position.
Patent GB-846737-A (GB)
Title: 3-substituted 4-hydroxybenzoic acids and their preparation
IPC: C07C51/15
Filed: 1957-04-16
Abstract: The invention comprises 3-(g ,g -dimethylallyl)-4.hydroxy-benzoic acid, 3-isoamyl-4-hydroxy benzoic acid and their esters and alkali metal salts.  They may be prepared by reacting an alkali metal salt of a p-hydroxy benzoic acid ester with a g ,g -dimethyl-alkyl halide under essentially anhydrous conditions in an inert solvent to produce the corresponding ester of 3-(g ,g -dimethyl-allyl)-4-hydroxy-benzoic acid.  This ester may be treated with alkali to give the corresponding alkali metal salt of the hydroxy acid, which may be isolated, by conventional means, if desired, or acidified to give the free hydroxy acid.  The side chain may then be hydrogenated catalytically to give the corresponding isoamyl compound. Alternatively the side chain may be hydrogenated first and the resulting 3-isoamyl-4-hydroxy benzoate converted to the free acid. In examples ethyl p-hydroxy benzoate is treated with sodium in toluene and g ,g -dimethyl-allyl bromide added to the mixture.  The resulting ester is then saponified and reduced or reduced and then saponified.  These compounds are stated to be useful as precursors in the production of novobiocin and a further example describes the addition of 3-isoamyl- and 3-(g ,g -dimethylallyl)-4 hydroxy benzoic acid to fermentation broths containing a culture of Streptomyces Spheroides and a nutrient medium.
Patent GB-400659-A (GB)
Title: Improvements relating to the remote control of railway points and signals or the like
IPC: B61L21/06
Filed: 1932-04-30
Abstract: 400,659. Railway signalling systems. PETER, L. H., WOODFORDE, J., and WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London. April 30, 1932, No. 12433. [Class 105]. In a system in which points and signals at a number of field stations are selectively operated from a central despatch office by current over a transmission line a lock relay controlled by local conditions prevents the transmitted current being received unless the local conditions are favourable. The lock relay MR is energized only if the signals are at danger and approach and fouling sections are unoccupied, signal indication relay contacts LGP1 RGP1 and fouling and approach section relay contacts WTR, ATR then being closed, Fig. 5. When a code is sent from the despatch office a delivery relay D closes its contacts D1-D5 and if the code is that for putting the points to reverse then transmitted current is applied to terminal 1 and picks up the points reverse control relay RSR over front contact MR1 and back contact 7 of a thermal cut-out hr ; the relay RSR then sticks by current from a terminal B over back contact NSR2 of relay NSR the stick circuit of which was de-energized by the opening of contact RSR2. The circuit to relay RWR is now completed over front contact RSR4 and back contact NSR4 and the points motor WM is reversely operated by current from a terminal B, over front contact RWR1, down through the rotor 8 and over front contact RWR2 to the field winding 9. To clear the signal corresponding to such reverse setting of the points the appropriate code is despatched and transmitted current is applied to terminal 3 to pick up signal control relay RHR which sticks over back contact LHR2, front contact WTR1, points indicator contact KR1 at reverse (the position shown is the at normal position), and front contact RSR5. The signal when cleared de-energizes the lock relay MR by opening the signal indication relay contact RGP1, Fig. 5 and the points cannot now be altered. If the signal is returned to danger but with a train in the approach section the relay MR can only be re-energized after a time interval has permitted a time element relay TER to close its contact TER1. The relay TER is energized over a contact of a relay TESR which is picked up by transmitted current applied to terminal 5. When the relay MR has thus been re-energized after an interval sufficient for the train to have passed through or to have been stopped the points can be altered.
Patent GB-1082882-A (GB)
Title: Improvements in or relating to steering gears for vehicles
IPC: B62D5/04
Filed: 1966-03-22
Abstract: 1,082,882. Power steering. SOCIETE DES ENGRENAGES DURAND. March 22, 1966 [March 31, 1965], No. 12638/66. Heading B7H. In a vehicle steering gear comprising a steering wheel shaft 2, separate from a steering column 3, a non- reversible worm and worm-wheel reduction gear 4, 5 in a casing 6 and an electric motor 8 drivingly connected to worm 4, the wormwheel 5 is secured to shaft 2 or to column 3 and casing 6 is secured to column 3 or to shaft 2. Normally rotation of steering wheel 1 is transferred to column 3 directly through the worm-wheel 5 and casing 6 but for slow speed driving and parking when steering loads are higher column 3 is rotated through the worm gearing 4, 5 by motor 8 while the steering wheel 1 is held stationary. The energization of motor 8 is controlled by a hand- or foot-operated knob. A clutch 11 may be provided, for connecting the shaft 2 to the casing 6 directly, controlled by a lever 12 which may be arranged to cut out the motor 8 automatically when the clutch 11 is engaged. The worm and worm-wheel and motor may be provided on the steering shaft adjacent a foot-operated knob.
Patent GB-292943-A (GB)
Title: Clutch plates
IPC: F16D69/02
Filed: 1928-04-30
Abstract: 292,943. Gamble, D. E. June 27, 1927, [Convention date]. Clutches, friction.-In order to render friction clutches progressive in action, the intermediate driven plate 5 is peripherally divided by slits 7 into sectors 6, which are bent about a circular line 9 alternately to opposite sides of the main body, hard friction rings 11 being secured by rivets &c. 12 to the sectors with which they contact. Transverse slits 8 allow the radial margins 10 of the sectors to be reversely bent to lie against the opposite ring 11. Clearance holes 13 receive the rivet heads when the rings 11 are closed together on clutch engagement.
Patent GB-662678-A (GB)
Title: Improvements in electric lighting circuits for pedal bicycles
IPC: B62J6/00
Filed: 1949-05-12
Abstract: 662,678. Supply systems for cycle lighting. RALEIGH CYCLE CO., Ltd., and HOLLIDAY, L. A. April 27, 1950 [May 12, 1949], No. 12646/49. Class 38 (iv). In a lighting system for a pedal cycle of the kind in which a primary battery 5 and a generator 1 driven by the machine work in conjunction to supply a lamp 4, the battery and generator are individually connected to the lamp circuit over oppositely poled metal rectifiers 6, 2 so that the lamp is fed by whichever source has the greater E.M.F. and circulating currents between the sources avoided. If the generator 1 is an alternator, its output may be applied to the lamp circuit through a rectifier bridge, in which case the additional rectifier 2 is unnecessary. The switch 3 in the lamp circuit may be of the three-point type adapted to open the parallel connection between the two sources when the lamp circuit is opened.
Patent GB-355727-A (GB)
Title: Dyeing animal fibres
IPC: D06P1/22
Filed: 1930-04-24
Abstract: In the processes of dyeing with indigoid vat dyes, acid dyestuffs of the triphenylmethane, oxazine, thiazine, and azine classes, sulphur dyes, and mordant dyes, the dyes or mixtures thereof are vatted with sodium hydrosulphite and ammonia, or ammonium carbonate, without the addition of salts of higher fatty acids, and the vat is employed direct for dyeing animal fibres. Indigo, its derivatives including carboxylic and sulphonic acids, sulphur Black T extra, Hydrone blue R and G, alizarine, and gallocyanine are specified and the vat may be prepared in presence of the substratum to be dyed.  Specification 279,550, [Class 15 (ii), Dyeing, Processes &c. for], is referred to.
Patent GB-474755-A (GB)
Title: Improvements in or relating to devices for displaying road maps or charts
IPC: G09B29/06
Filed: 1936-05-05
Abstract: 474,755. Map holders. AUTO AVISO SOC. ANON. May 5, 1936, No. 12691. Convention date, May 6, 1935. [Class 146 (ii)] A device for displaying road maps or charts comprises a strip 6 of paper or other suitable material having a contour of the road thereon and adapted to be wound from one roller 2 to another 3, a driving-roller 7 between the rollers 2, 3 being provided with spikes or teeth 9 which engage perforations in the strip, and being connected to one of the rollers 2, 3 by an elastic rope or the like, the roller 7 being rotated by a worm 15 and worm wheel 14, one of which can be moved to disengage the worm from the wheel. The elastic rope drive allows for slippage to compensate for increasing diameter of the roller 3. The shaft 16 of the worm 15 is driven by hand or motor, and is journalled at one end in a thimble 19 which can be rocked to disengage the drive. Apertures in the strip 6 opposite places of interest on the map are detected by a switch 22 which operates audible or visible signals or both.
Patent GB-149784-A (GB)
Title: Improvements relating to means for securing printing plates to the cylinders of printing presses
IPC: B41F27/10
Filed: 1919-05-20
Abstract: 149,784. Terrey, A., and Butler, J. H. May 20, 1919. Printing - surfaces. -Printing-plates are secured to the cylinders of printing- presses by clamping- devices held in position by electro-magnetic action. As shown, the clamping- means comprise segmental fastening-rings, as c, Fig. 1, connected to end segmental plates e by means of bars d moving in dovetail grooves in the ends of the cylinder a. The plates e can be moved axiallv of the cylinder a by hand, being guided in this movement by the bars d engaging the dovetail grooves. The plates e are locked in the position shown with the bevelled edges of the plate c in engagement with the plate b by means of pivoted catches j, which are held by springs against pins of the cylinder a. The catches j operate as switches to energize solenoids g the cores of which attract iron disks f let into the rings e, and thus form an additional locking-means for the rings. The leads for the solenoids g pass through axial holes o leading to radial holes in the cylinder. On releasing the catches j, the solenoids are de-energized, and the plates e are moved outwards to free the printing- plate by means of spiral springs arranged in axial holes in the cylinder a. Dogs or clips may replace the segmental clamping-rings.
Patent GB-628870-A (GB)
Title: Improvements in and relating to boring bars for use more especially in reboring cylinders of internal combustion engines
IPC: B23Q17/22
Filed: 1947-05-12
Abstract: 628,870. Linear-dimension gauges. WHATTON & SONS, Ltd., and WHATTON, J. A. May 12, 1947, No. 12728. [Class 106 (ii)] [Also in Group XXII] A micrometer gauge adapted to be used in conjunction with a boring head (see Group XXII) to adjust the cutting tool thereof, has an offset arm 35 which carries a dowel pin 36 made a good fit in a bore 37 formed in the end of the boring head 11. In addition the arm 35 has three extensions which carry spring-pressed balls 46 to engage recesses in the head to locate the micrometer. Specification 420,278 is referred to.
Patent GB-792992-A (GB)
Title: Process for the preparation of mercurated propylurea derivatives
IPC: C07F3/10
Filed: 1955-05-03
Abstract: Compounds of formula H2NCONH.CH2CH(OR)CH2HgX where R is an alkyl group containing up to 3 carbon atoms and X is Cl or Br are prepared by reacting monoallylurea with mercuric chloride or bromide and an alkanol containing up to 3 carbon atoms in the presence of a weakly basic compound.  Specified basic compounds include mercuric oxide, potassium bicarbonate and alkali metal or alkaline earth metal salts of weak acids, especially carboxylic acids.  In an example, 2 - methoxy - 3 - chloro - mercuripropyl urea is prepared by mixing allyl urea and mercuric chloride in methanol, adding sodium acetate and heating. The precipitate is filtered off, washed from inorganic salts and dried.  Other examples describe the preparation of 2-methoxy-3-bromomercuripropyl urea, 2-ethoxy-3-chloromercuripropyl urea, and the preparation of 2-methoxy-3-chloromercuripropyl urea in the presence of potassium bicarbonate, cadmium carbonate, mercuric oxide and calcium acetate.
Patent GB-235167-A (GB)
Title: Improvements in watch bearings
IPC: G04B31/04
Filed: 1925-05-15
Abstract: 235,167. Brun, J. F., and Brun, P. A. June 5, 1924, [Convention date]. Jewelling and pivoting.-The balance cock 1 which carries a jewel 2 bored at 3 to take the balance staff or pivot 4 has fixed to its upper surface by screws 7, 8 a plate 6 housing a cap jewel 14 against the flat underface of which presses the pivot 4. A disc spring 16 having a central aperture 18 is housed in the plate 6 by burring over the edges 17 of the latter and bears on the top of the cap and jewel. When the watch is subjected to shock, the pivot may thus move axially against the spring action to the dotted line position shown, the spring thereafter restoring the parts. There is a gap 13 to permit slight lateral movement of the cap jewel.
Patent GB-787858-A (GB)
Title: Improvements in and relating to the preparation of aromatic nitriles
Inventor: DEWING TOM
IPC: C07C255/56
Filed: 1955-05-03
Abstract: The invention comprises a process for the preparation of 1-p-chlorophenyl-2-ketovaleronitrile by the condensation of p-chlorophenylacetonitrile with a lower alkyl propionic ester, in an inert solvent in presence of sodamide or potassamide.  In examples, p-chlorphenylacetonitrile is condensed with isopropyl propionate in toluene using excess of sodamide.  The product, obtained as the sodium derivative of the enolic form, is isolated with acid.
Patent GB-1136243-A (GB)
Title: Ignition systems
Inventor: PARISH NORMAN ARTHUR
IPC: F02P3/08
Filed: 1965-03-26
Abstract: 1,136,243. Ignition systems. ROTAX Ltd. April 28, 1966 [March 26, 1965], No.12818/65. Heading F1B. An ignition system comprises in combination a capacitor means for charging the capacitor, a plurality of trigger devices which when conductive permit discharge of the capacitor to produce a spark, a voltage sensitive device and a plurality of transformers, the primary windings of which are connected in series with the voltage sensitive device across the capacitor. The voltage sensitive device conducts when the voltage across the capacitor reaches a predetermined value so that current flows in the primary windings of the transformers each having a secondary winding and the secondary windings being connected to the plurality of trigger devices respectively, the arrangement being such that when a voltage is generated in a secondary winding the trigger device associated with that secondary winding will conduct. The system further includes switch means operable to determine which transformer turns its associated trigger device on when the voltage sensitive device conducts. As shown the transformers are provided with tertiary windings 40, 38 which have one end connected to a relay contact 39 operable by a relay 16. When the relay 16 is energized the contact 39 bridges the winding 40. When the gap 32 breaks down a pulse is produced in the winding 37 which causes the device 27 to become conductive so that the main discharge path for the capacitor 29 is through the plug connected to the terminal 26. In a modification either the first transformer or the second transformer is saturated instead of short circuiting one of the windings 38, 40. The invention can be applied to circuits in which more than two plugs are to be used alternatively.
Patent GB-784437-A (GB)
Title: Improvements in or relating to bleaching textile materials
Inventor: FELL ERIC TOM
IPC: D06L4/13
Filed: 1955-05-03
Abstract: Textile materials not containing wool are bleached in an aqueous medium with permonosulphuric acid or a salt thereof at a temperature above 80 DEG  C.  Small amounts of hydrogen peroxide may be present as an impurity.  Examples refer to the treatment of polyamide, polyester, polyacrylonitrile, cotton, cellulose triacetate and regenerated protein fibres, and pH values given range from 0.9 to 9.0, adjustments being made with phosphoric acid or sodium or potassium hydroxide.  Temperatures vary from 80 DEG  C. to boiling. Cotton may be previously kier-boiled and scoured.
Patent GB-1093037-A (GB)
Title: Improvements in or relating to oil-fed torches
Inventor: THEOBALD EDMOND ERNEST
IPC: F21L17/00
Filed: 1966-03-23
Abstract: 1,093,037. Oil burners. TOP SECRET Ltd. Sept. 20, 1966 [March 23, 1966], No. 12927/66. Heading F4R. An oil burning torch comprises a cylindrical container 1 having a detachable end 3 with a perforation 4 through which a wick 5 passes and an inverted cylindrical base portion 6, the end wall of which is secured to the end wall of container 1. The part 6 may be closed by a screw cap or may be open to fit over a pole or finger bracket. A suction pad may be fitted to the part 6 or to a pole inserted therein so that the torch can be fixed to a surface.
Patent GB-501238-A (GB)
Title: Improvements in circuit arrangements for varying the tuning of oscillatory circuits
IPC: H03J3/18
Filed: 1938-04-30
Abstract: 501,238. Electric condensers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 30, 1938, No. 12967. Convention date, May 1, 1937. Drawings to Specification. [Class 37] [Also -in Group XL] The tuning of an oscillatory circuit is varied in accordance with a direct current control voltage by means of a condenser the capacity of which varies with the said control voltage. The condenser may take many forms; it may comprise fixed electrodes separated by an insulating layer of 10<SP>-3</SP> cm. maximum thickness, which layer may be bounded by a coating of a semi-conductor of the "oxidation " type, e.g. peroxide of copper or uranium dioxide, or of the "reduction" type, e.g. zinc oxide ; or the layer may be a coating of shellac, the substance' known under the Registered Trade Mark " Bakelite," &c. Again the layer may be such as is employed in dry or wet rectifiers or electrolytic condensers. The invention is applicable to remote or automatic control of tuning in radio receivers or transmitters.
Patent GB-291594-A (GB)
Title: Improvements for holding, feeding, and guiding drilling tools of the hand, breast drill and ratchet types
IPC: B25H1/00
Filed: 1927-05-14
Abstract: 291,594. Abel J. H. May 14, 1927. Drilling-machines.-An attachment for holding and feeding a portable drill of the hand and breast or ratchet type comprises a plate A attached to the body of the drill by bolts or studs c in place of the usual horizontal handle. The plate may be used for guiding the drill by hand or may be fitted in a guide B, Figs. 3 and 5. attached by a wooden block G to an upright flat or channelled metal strip F. A hand feed-lever J is adjustably pivoted by holes in a bracket K on the guide and operates between studs L on the plate A. When used with a. ratchet drill the latter may be fed by a sleeve E, Fig. 5, attached to the plate A and having a stud H for engagement by the chain feeding device described in Specification 222,171. This device may be also used with a stud H, Fig. 4, attached to the breast drill in place of the hand lever J.
Patent GB-1512484-A (GB)
Title: Process and apparatus for producing a photopolymer plate having relief images thereon
IPC: G03F7/20
Filed: 1976-03-31
Abstract: 1512484 Producing relief images ASAHI KASEI KOGYO KK 31 March 1976 [4 April 1975] 13016/76 Heading G2A A photopolymer relief image is produced by applying a layer of liquid photopolymer to the upper surface of a transparent protective web, forming a laminate with a backing sheet, imagewise exposing through the protective web, removing the protective web, and removing unhardened non- exposed portions of the photopolymer layer, the web being passed along a horizontal path in substantially wrinkle-free condition between the steps of liquid application and web removal, supported by a flat stationary support member during liquid application, and downwardly turned for web removal. The backing sheet may be precut or cut during the process. As shown, a transparent protective web 112 (eg of polyethylene or polypropylene) is passed through liquid application and exposure stations from a supply spool 110 to a take-up spool 122 with the aid of a driving roller 118 and is maintained wrinkle-free by means of pinch roller units 600 (see also Figs. 2 and 6, not shown). An original transport web 330 to which a transparency may be attached electrostatically is passed through the exposure station below web 112 from a supply spool 332 to a take-up spool 122 with the aid of a driving roller 344. It may also be maintained wrinkle-free by means of pinch roller units (not shown). Liquid is spread on web 112. using a pivotable bucket 212 having a flowcontrolling blade (228) Fig. 3 (not shown), while web 112 passes over a stationary metal support 210. A backing web 242 from a supply spool 240 passes round a reversible driving roller 244 to form a laminate above plate 210. The laminate is passed through sensitizing pre-exposure station 310, backing web cutting station 500 and imagewise exposure station 320. After web 112 has been removed, the exposed photopolymer is passed through a washing station 400. At sensitizing station 310, the photopolymer may be exposed (from below) to a pattern of light dots Fig. 9 (not shown), which may be preceded by a plain sensitizing exposure Fig. 10 (not shown). Cutting station 500 comprises a reciprocatory rotary cutter (530) Fig. 5 (not shown), wedge-shaped separator (540), and a vacuum pipe (546) for initially raising the backing material for insertion of the separator between webs 112 and 242. Exposure station 320 comprises a lower transparent fixed plate 326 and an upper movable plate 350, which is lowered for the exposure. Washing station 400 comprises upper and lower pairs of conveyers 410 and 412 and spray nozzles 414. The process may be controlled automatically with the aid of a length sensor in the form of a roller 700 having a rev counter.