baber/WOPTO huggingface dataset:
Patent GB-844077-A (GB)
Title: Improvements in or relating to a method of reproducing documents
IPC: B41C1/10
Filed: 1957-06-07
Abstract: 844,077. Photolithography. D'HAUTERIVE, G. M. G. June 7, 1957 [July 11, 1956], No. 18149/57. Class 98(2) Documents are copied onto a photosensitive surface which yields an imagewise change of acidity by light action, such surface is then pressed onto an inert support carrying a layer of aluminium compounds to cause a corresponding change of acidity therein and result, with or without application of a hygroscopic agent, in an imagewise variation of ink-accepting and inkrefusing portions, and the layer is inked up for lithographic printing. The zone for inkability of the aluminium compounds is centred on the neutrality value of pH7 but may extend between pH4 and pH11, thus change from pH4 to pH4À5 may allow inking and the reverse change cause this property to disappear. In Example 1 a tracing or a typewritten or printed text on a transparent support is exposed for 10 minutes onto an iron perchloride coated paper to release hydrochloric acid in the exposed areas, this is pressed for 4 or 5 minutes onto a glass plate coated with aluminium sulphocyanate and the latter is treated with a solution containing glycerin, lactic acid and sodium benzoate, and then with a specified fatty ink, to yield positive copies of the original. In Example 2 the initial material is a photographic negative and this is exposed to paper sensitised with ammoniacal ferrie oxalate and hydrochloric acid whereby exposed areas lose some of their acidity, and subsequent procedure is similar to that of Example 1 but of reversed effect whereby positive copies result from the negative original. Example 3 indicates that a water-steam treatment or a treatment employing the breath may be effected after the pressing of Examples 1, 2 and then inking may be effected directly. Photodissociation of diezonium chloride releasing hydrochloric acid may be used to operate the invention and numerous other variations are indicated.
Patent GB-468312-A (GB)
Title: Improvements in or relating to universal joints and the process of making the same
IPC: F16C11/06
Filed: 1936-06-30
Abstract: 468,312. Universal joints. DICKER, S. G. S. (Thompson Products, Inc.) June 30, 1936, No. 18157. [Class 65 (ii)] [Also in Group XXII] A universal joint comprises two hardened metal spherical seat elements in bearing relation, one of which is secured within a housing, and the other of which is secured by pressing to a separate stud of tough metal so as to form an integral member therewith. A stud 18 has a tapered portion 20 to receive the end of a link connection and a threaded portion 19 for receiving a locking nut, and is formed at the lower end with a flange 22 and a part spherical end 23. The stud is rendered tough by heat treatment, while the end 23 is case-hardened. A case-hardened member 24 with a segmental spherical bearing surface 25 is pressed as a force fit on to the stud so that it is firmly united thereto, and is lapped into engagement with a case-hardened bearing seat 27 which has been forced into a housing 10. Lubricating grooves are formed in either or both of the faces of the bearing members 24, 27. A cap 30, with a depression 31 and a spring 34 are retained by a plate 32 which is secured by caulking over the edge 33 of the casing 10.
Patent GB-313533-A (GB)
Title: Carrier for the winding roll in photographic film cameras
IPC: G03B19/04
Filed: 1929-02-25
Abstract: 313,533. Neithold Akt.-Ges., C. March 12, 1928, [Convention date]. Divided on 307,744. Cameras, roll-holding devices for.-Means for holding the take-up spool in a roll-film camera comprises a wedgeshaped motion spring 7 pivotally mounted on the camera casing opposite the winding handle. When in the outward position, the spring allows the spool to be inserted; when swung inwards the tongue 9 engages between the side wall of the camera and the end disc of the spool, and the latter is pushed on to The stud of the winder and held in position in the casing by the engagement of the edge 8 with the rim of the end disc.
Patent GB-1381336-A (GB)
Title: Apparatus and method for controlling the cure of a rubber compound
IPC: B29C35/02
Filed: 1972-04-20
Abstract: 1381336 Automatic control of vulcanization McNEIL CORP 20 April 1972 [26 April 1971] 18382/72 Heading G3N Apparatus for controlling the operational steps in the process of curing a rubber compound, comprises means for providing command signals dictating the duration of the steps in cure equivalents, as defined in the Specification and terminating the operation step in accordance with a comparison with a measurement signal. As shown, a tyre cure programme, set out in steps having a desired duration specified in cure equivalents or additionally in real time is deciphered by a punch card reader and set into a time comparator 12 or a cure equivalent comparator 157. In the real time mode the duration of a step is determined from a mains-frequency divider 13, and the completion of a step enables logic circuitry 29, set to the desired mode from the reader 11, which resets the divider through a circuit 35, actuates a step counter 30 which, in turn, causes the next row of the punched card to be read. Facilities are provided for extending the duration of certain programme steps by a circuit 50. In the cure-equivalent mode, the temperature of a tyre, or the lowest temperature tyre of a pair of tyres, is sensed by a thermistor device as disclosed in Specification 1381337 and in a function generator 101 selected and fed as a voltage signal to a convertor 150 providing a signal through a divider 151 having a frequency proportional to cure equivalents per minute to a synchronization circuit 152. The signal from circuit 152 is fed to a decade counter 153 and compared in a comparator 157 with the step duration from the reader 11. The circuit 152 also 'blanks' comparator 157 during step changes. The tyre-moulding press cycle is controlled by the read-out from the reader 11 through amplifiers 80 and interface devices 81.
Patent GB-579778-A (GB)
Title: Improvements relating to radio antennae
IPC: H01Q9/28
Filed: 1943-11-05
Abstract: 579,778. Aerials. STANDARD TELEPHONES & CABLES, Ltd., and WILLOUGHBY, E. O. Nov. 5, 1943, No. 18436. [Class 40 (v)] An aerial system having a substantially flat amplitudefrequency characteristic over a wide frequency band is provided by coupling a tubular radiating element to a transmission line by means of a resonant stub formed inside the tubular radiator. A hollow conducting cylinder 1, Fig. 1, with conical end 3, half-wave resonant at the mean frequency and supported by an insulating bush 6 in an insulating tubular casing 5 above the earth plate 4, forms the radiating element. A central conductor 7 connected to the closed upper end 2 forms with the cylinder 1 a short-circuited stub which is tuned by condenser 11 to be half-wave resonant at the mean operating frequency. The aerial is fed from a transmission line 8 by a quarterwave matching transformer 10, connection being made to the central conductor 7 so that the impedance across the open end of the stub is in series with the aerial, and the variations in impedance of the aerial and stub neutralize one another at frequencies other than the mean value. As a refinement, the reactance introduced by the stub may be made to overcompensate for the aerial reactance in order to take account of the reactance introduced by the transformer 10 at frequencies other than that at which it is correctly one-quarter wavelength long. In a modification, Fig. 2 (not shown), a dipole system comprises two halfwave elements, similar to that shown in Fig. 1, arranged end to end and fed through two coaxial lines or a two-wire screened or unscreened line. Fig. 4 shows a dipole arrangement in which the coaxial line 8 and matching transformer 10 are brought coaxially through the lower cylindrical member 1A, the outer conductor of the line being connected to the member 1A while the inner conductor is connected to the inner conductor 7 of the upper element. With this arrangement the conductor 7 and cylinder 1 form the only stub in series with the aerial system and have to introduce the required reactance to neutralize both members of the dipole. In order to prevent energy being transferred to the outer conductor of the line 8, a short-circuiting disc 15 is provided inside the cylinder 1A a quarter wavelength from the open end. In a modification, Fig. 5 (not shown), a two-wire screened feed is employed, one conductor being connected to the conductor 7 and the other to the cylinder 1A at its upper end. A short-circuiting disc 15 is fitted to make the lower portion of cylinder 1A operate as a quarter wave suppressing stub, the upper portion having additional capacity to cause it to operate in the same manner. Various methods of mounting the dipole aerials on a mast or supported from guys are illustrated in Figs. 3, 6 and 7 (not shown). Specification 541,870 is referred to.
Patent GB-402695-A (GB)
Title: An improved sheet feeding machine
IPC: B65H3/34
Filed: 1933-06-29
Abstract: 402,695. Feeding sheets. MILLS, C. K., 34, High Holborn, London.-(Cross Paper Feeder Co. ; 185, Summer Street, Boston, U.S.A.) June 29, 1933, No. 18490. [Class 100 (i).] A sheet-feeding apparatus of the kind in which the separation of the sheets is effected by the aid of a rising and falling combing device 68 acting on a bank of fanned-out sheets produced by bands 8, 40, 29 and upper and lower tables 1, 36 connected by a curved throat, is constructed so that the sheets are fed from the lower table 1 to the upper table 36, and the combing rollers 68 register the top sheet against a feeler device 69 which raises the combers 68 as soon as the sheet is registered. The rollers 68 impart a final separating movement to the sheets in the same direction as the fanning-out movement. At this time pivoted drag members 72 engage the top of the sheet below the top one and air blasts are directed from the members 72 under the top sheet, and separation of the top sheet is completed by suction nozzles 73 on a tube 75 carried by arms 77 which are oscillated by cam mechanism through mechanism including a lost-motion device to permit the nozzles to operate on banks of different thicknesses ; or telescopically mounted nozzles may serve the same purpose. The separated sheet is finally fed off by drop rollers 88, 89, and is directed to the printing-machine by guides 95. The separated sheet moves from the bank in a direction which is the reverse of that produced by the belts 40 and the combers 68, and the speed of the machine may be high owing to the fact that the combers may act on a succeeding sheet before the separated sheet is withdrawn completely from the fanned-out pile. The belts are actuated by ratchet mechanism 43-47 which is controlled in known manner by the time period of operation of the combing rollers. To adjust the pile tables and associated parts for dealing with sheets of different lengths, the table 1 is supported by links 11, 28 from supports movable on tracks 14, 20 and connected by side bars 16 adjustable longitudinally by means of a screw 23. The front of the table 36 is supported by brackets 38 extending from the side bars 16. Specification 25663/02, [Class 100, Printing, Letterpress &c.], is referred to.
Patent GB-1424576-A (GB)
Title: Reciprocating lifting mechanism
IPC: D01H9/04
Filed: 1973-04-17
Abstract: 1424576 Doffing and donning ZINSERTEXTILMASCHINEN GmbH 17 April 1973 [17 April 1972] 18527/73 Heading DID Grippers are raised and lowered, to don and doff bobbin tubes, by at least one drive unit via mechanical linkages, the speed of each unit being automatically varied during gripper movement. Gripper-supporting rail 11 is raised and lowered by hydraulic or pneumatic drive unit 52 via axially slidable rod 24; and linkages 19, 20. The rail, linkages, rod and non-sliding bearings 7 are pivotable about the rod axis by drive means (not shown). Endless chain 58, moved by rail 11, adjusts valve 55 to control the speed of unit 52 to move the rail at contant speed. The chains may be replaced by a cam surface fixed to the rail or to the unit 52, or by a snail cam rotatable with a link 19 about a pivot 29. Unit 50 may be replaced by an electric motor driving gears engaging a rack on bar 24'; the gear ratio being adjusted by a linkage connected to bar 11. Alternatively, Fig. 5, a threaded rod 24' may be moved by motor 69 rotating nut 67. Tachogenerator 95, driven by rail 11 via rack and pinion 94 emits a signal dependant upon rail speed which is compared with a reference value in controller 96 to produce a difference signal which adjusts the speed of motor 69 via servomotor 97 and variable resistance 71. The rail speed may be non-uniform, e.g. increasing and decreasing uniformly on either side of the mid-point of rail movement. The rail speed may alternatively be controlled by a time programme, e.g. by punched cards.
Patent GB-498389-A (GB)
Title: Improvements in or relating to variable electrical condensers
Filed: 1937-07-03
Abstract: 498,389. Variable condensers. BRITISH MECHANICAL PRODUCTIONS, Ltd., and HAWKE, K. N. July 3, 1937, No. 18553. [Class 37] In a trimmer condenser a movable plate 11, normally held at the desired inclination by a screw 13, secured to the base plate 3, passing through a hole in it, is fastened to the base by a fixed part of channel formation, a single rivet 5 traversing holes in the arms 7, 8 of the channel. The connection tag 10 and the movable plate 11 are attached one to the free edge of one of the arms of the channel and the other either to the other arm or to the base of the channel. In the example the movable plate is secured to the base of the channel by integral springy curved portions 14 arising from a bent up part 17 of full width. of the plate. The fixed plate 1 may also be of channel formation similarly attached to the base plate, or may consist of a coating of metal electrolytically chemically or otherwise deposited.
Patent GB-768706-A (GB)
Title: Improvements in or relating to printed circuits
IPC: H05K3/38
Filed: 1954-06-25
Abstract: 768,706. Printed circuits. COLE, Ltd., E. K., and KING, A. E. June 27, 1955 [June 25, 1954; Oct. 16, 1954], Nos. 18628/54 and 29843/54. Class 36. A printed circuit is made by filling shallow recesses in a mould with a finely-divided metal powder, removing any surplus powder from the unrecessed portions of the mould, transferring the powder from the mould to an insulating base in the pattern determined by the recesses, and treating the powder to bond it to the base. The mould may be removed from the base without dislodging the powder, which is subsequently consolidated and bonded to the base by heat and pressure, or pressure may be exerted between the mould and the base to compress the powder and cause it to adhere to the base before the mould is removed. In an alternative method the mould is placed in contact with a plate, preferably of polished steel, and pressure is exerted partly to consolidate the powder and to cause it to adhere temporarily to the plate. The mould is removed, and the powder-bearing surface of the plate is placed against the base, heat and pressure being applied to transfer the powder from the plate to the base and bond it to the latter. The base may comprise or be coated with a thermosetting substance which is partly cured to a non-tacky state at the time the powder is applied, the curing being completed by the applied heat and pressure. Reference has been directed by the Comptroller to Specification 690,486.
Patent GB-479418-A (GB)
Title: A teat cup for use in connection with milking machines
IPC: A01J5/08
Filed: 1937-07-05
Abstract: 479,418. Cow - milkers. BLAND, L. H. P. July 5, 1937, No. 18637. [Class 84] A teat cup having a telescopic casing formed of two sections a, b within which extends under tension an elastic rubber or like inflation c has a nipple d of glass or like transparent material fitting into the liner and formed near its inner end with a bead or flange e, arranged externally of the teat cup, over which a part of the inflation extending beyond the end of the nipple d is rolled up. A bead f may be provided on the lower end of section b, bearing against the rubber &c. covered bead or flange e.
Patent GB-412414-A (GB)
Title: Improvements in teeth-cleaning appliances
IPC: A46B7/06
Filed: 1933-06-30
Abstract: 412,414. Toothbrushes. VACHOUX, W., 57, Rue de Montchoisy, Geneva, Switzerland. June 30, 1933, Nos. 18657 and 18658. Convention dates, July 1, 1932 and June 22, 1933. [Classes 19 and 61 (i).] A toothbrush comprises two spring-supported parts carrying bristles and capable of independently oscillating in a plane perpendicular to the longitudinal axis of the brush handle, the parts being mounted on a rod which carries the spring and extends longitudinally beyond one end of the handle. In the construction shown in Figs. 2, 3 and 5, two plates 7 carrying bristles 7<a> are connected by screws 5 to a resilient blade 4 which is fixed in a rod 8. The rod fits in a recess in a handle 1 and is held in place by means of a button 10 which is adapted to slide in a hole in the handle and is provided with a cross-piece 11 for engagement in a groove 12 formed in the rod 8. The brushes are replaceable by brushes mounted on the concave side of a similar resilient blade. In a modification shown in Figs. 6 and 8, brushes 17, 18 are hinged together about an axis 16 on the end of a rod 15 which is detachably secured to the handle 1. A blade-spring 20 fixed on the axis 16 engages in recesses formed on the brush stocks. The brush 18 is formed with a groove 23 in which a U-shaped member 24 is slidably mounted, the member being adapted to straddle the end of the axis 16. The blade 20 is slightly curved so that the brushes 17, 18 form together a convex brush, which is replaceable by a concave brush with a blade shaped correspondingly. A single flat blade spring may be used with one pair of brushes 17, 18 which by pressure on the blade spring may be caused to conform to the interior or exterior curvature of the jaw.
Patent GB-516370-A (GB)
Title: Improvements in and relating to electrically heated units for permanent hair waving
IPC: A45D4/12
Filed: 1938-06-23
Abstract: 516,370. Heating by electricity. RAYMOND, A. S. June 23, 1938, No. 18678. [Class 39 (iii)] A permanent hair-waving appliance comprises an aluminium body 1 which encloses a movable electric heating cartride consisting of a resistance 13 wound on a porcelain rod 11. This heating element is adapted to be preheated by having terminals 14 at each end to engage current supply terminals in a receiver. The cartridge is encased in an insulating tube 18 and to facilitate its removal a plug 17 is screwed into one end of the body 1. The curler is mounted in a recess 4 in the lower part of the device, and kept in place by means of jaws 5 which are pivotally supported at 7 and are manipulated by finger-pieces 9.
Patent GB-653035-A (GB)
Title: Improvements in or relating to a process of purifying titanium chloride
IPC: C22B34/12
Filed: 1948-07-12
Abstract: Suspended foreign metal chlorides are removed from crude titanium chloride obtained by chlorinating ores containing titanium oxide, by distilling the crude turbid chloride, condensing the vapours to a hot liquid, cooling the condensate at such a rate, say not more than 10 DEG  C. per second, that the solid metal chlorides which have been distilled with the titanium chloride are precipitated in coarse granular form, and separating the liquid.  The sediment with the precipitate is returned to the undistilled titanium chloride.  The condenser cooling liquid is preferably at not less than 100 DEG  C.
Patent GB-186452-A (GB)
Title: Improvements in or relating to the suspension of the underframes of automobile or other vehicles
IPC: B60G21/04
Filed: 1921-07-11
Abstract: 186,452. Benuzzi, A. July 11, 1921. Equalizing load on wheels and springs; springs, arrangement of.-To distribute throughout the underframe of a motor or like vehicle the shock on any wheel, the inside end of each suspension spring is connected to the underframe by a bellcrank lever, the pairs of levers on each side being connected by rods. As shown, the inside end of the front spring 4 is connected to a shackle 6 depending from a bell-crank lever 7, while the corresponding end of the rear spring 5 is connected to a bell-crank lever 11 by a shackle 10 situated above the lever. The levers 7, 11 are connected by a rod 14 controlled by springs 16, 17 which are arranged between an abutment 15 on the underframe and an adjustable abutment 16<1> on the rod 14. The rear ends of the rear springs are connected by a transverse connection of a similar nature. Reference has been directed by the Comptroller to Specifications 20368/12 and 7332/15.
Patent GB-1184122-A (GB)
Title: Fabrics Woven from Drawn Plastics Bands
IPC: D03D15/00
Filed: 1968-04-22
Abstract: 1,184,122. Fabrics woven from drawn film. SAINT FRERES. 22 April, 1968 [3 May, 1967], No. 18889/68. Heading D1K. A fabric, e.g. for sacks, is woven, from drawn polyethylene or polypropylene film of from 30 to 60 microns thickness, of from 1.6 mm. to 2.5 mm. width and having a set of plus or minus 10% the multiple of the total number of yarns per considered area. Examples are given.
Patent GB-423505-A (GB)
Title: Improvements in and relating to recording sound
IPC: G11B11/00
Filed: 1933-07-04
Abstract: 423,505. Recording sound. KOLB, O. K., Beverley Court, Wellesley Road, Chiswick, and BRITISH ACOUSTIC FILMS, Ltd., Film House, Wardour Street, both in London. July 4, 1933, No. 18989. [Class 40 (ii)] Sound tracks which are to be electro - optically reproduced, are inked on a record medium by a writing edge or surface, the whole of which vibrates over the space allotted to the sound track. The writing member may take the form of prongs 6, 7 forming a slit through which ink is fed or pressed, or may be formed as a wedge-shaped member, having grooves down an inclined face, leading ink to the edge contacting with the record medium. The ink may consist of aniline dyes, the fluidity being controlled by the addition of pigment or liquid. The record medium may consist of paper, metal, celluloid, cellulose hydrate, &c., and where paper is used, reproduction may be effected by modulated light reflected from the surface of the record. The records may be duplicated. The writing edge may be formed of wearresisting material such as an alloy of platinum and iridium. Immediately before reaching the inking member, the record medium may be chemically treated, as by rubbing with alcohol to ensure a good connection between the ink and the medium, and the drying of the ink may be artificially accelerated. The writing member may be controlled in known manner, both by the sound frequencies and by the average value of the sound amplitudes, to reduce background noise. The record medium may be slightly curved in a plane normal to the direction of travel, the writing member also being curved so that contact between the record and writing member is maintained at all amplitudes. The writing member may be vibrated in known manner by electromagnetic &c., devices. The Provisional Specification describes also the production of a record by means of a writing pin, or by pressing the vibrating pin against a colour carrier placed against and moving with the record .medium.
Patent GB-1301884-A (GB)
IPC: A01N27/00
Filed: 1970-04-21
Abstract: 1301884 Treating plants INTERNATIONAL MINERALS & CHEMICAL CORP 21 April 1970 [30 April 1969] 19122/70 Heading A1E [Also in Division Cl] A method of treating plants to increase the crop yield therefrom comprises introducing an effective amount of an unsaturated hydrocarbon gas into the soil substantially below the surface of the soil and sufficiently near the roots of the plants that the gas diffuses in the soil to the plants. The gas is suitably ethylene and may be introduced into the soil in the form of, e.g. a gas, an aqueous solution or a compound which yields the gas through contact with the ground. The gas may also be used in conjunction with ammonia.