baber/WOPTO huggingface dataset:
Patent GB-473740-A (GB)
Title: Improvements relating to endless chains
IPC: B62D55/205
Filed: 1936-12-09
Abstract: 473,740. Endless tracks for vehicles. SOC. DE CONSTRUCTION DU TRACTEUR VIGNERON G. VIDAL. Dec. 9, 1936, No. 33811. Convention date, Dec. 11, 1935. [Class 79 (i)] [Also in Group XXV] Endless tracks for tractors comprise shoes 1 provided with pairs of connecting link plates 3, Fig. 5, cranked as shown to form a narrow spigot end 4 fitting into a socket end 5. Each end of the plates has keyhole slots 7, 8, 9, 10, Fig. 1, the slot 7, 8 at the spigot end and the small part 10 of the slots at the socket end being on the axis of the link, while the large part 9 of the slots at the socket end lies slightly below the axis. The connecting pin consists of a central part 11 of a width corresponding to the spacing of the plates at the spigot end of the link and of a diameter to pass through the wide parts of the keyhole slots, two end extensions 12 equal in width to the thickness of two plates and of a diameter equal to that of the small parts of the slots, and integral heads 13 bearing on the outside faces of the plates. The links are assembled by placing the large parts of the slots in coincidence, passing the pin through and drawing the links apart so that the small extensions of the slots embrace the reduced parts of the pin, the angular setting of the slot 9, 10 permitting the shoe parts to clear one another in the assembling operation. The connecting plates and shoes may be cast together.
Patent GB-447775-A (GB)
Title: Process for the manufacture of azodyestuffs
IPC: C09B33/00
Filed: 1934-11-24
Abstract: Azo dyes containing copper in a complex form are made by coupling a mono-azo dye of the formula <FORM:0447775/IV/1> (in which x=hydroxyl, alkoxy, halogen or carboxyl, y=hydroxyl amino or substituted amino, one z means the same as y and the other z stands for hydrogen or any substituent, and in which R means a benzene or naphthalene radicle and R and R<1> may contain further substituents), with a diazo compound containing only once the grouping --N=N--, if desired, coupling the disazo dye with a further diazo compound, and transforming the dyestuff by a wet process either prior or subsequent to the final coupling into the copper complex compound of the corresponding o-hydroxy- or o-carboxy azo dye.  They dye leather, and animal and vegetable fibres in brown shades.  The following dyes are described in examples: (1) 2-anisidine-4-sulphonic acid --> resorcinol (coppered) \sM m-nitroaniline or 4-nitro-1 : 3-phenylenediamine; (2) 2-anisidine-4-sulphonic acid \sQ resorcinol treated with copper ammonia solution; (3) 6-chloroaniline-3-sulphonic acid --> resorcinol (coppered) \sM dehydrothiotoluidine sulphonic acid; (4) 5-nitro-2-anisidine-4-sulphonic acid --> resorcinol (coppered) \sM p-chloraniline; (5) the second disazo dyestuff in (1) coupled with diazotized 2-anisidine-4-sulphonic acid or 4-nitroaniline-3-sulphonic acid; (6) 2-anisidine-4-sulphonic acid \sQ resorcinol \sM p-nitroaniline treated with copper ammonia solution; (7) 2-chloraniline-4-sulphonic acid --> resorcinol (coppered) \sQ p-nitroaniline and dehydrothiotoluidine sulpho acid.  Specification 297,003, [Class 2 (iii)], is referred to.  The Specification as open to inspection under Sect. 91 comprises the coupling of the monoazo dyes of the above formula with a diazo compound suitable for preparing azo dyes with the exception of a diazoazo compound, if desired, coupling the disazo dye with a further diazo compound, and transforming the dyestuff either prior or subsequent to the final coupling into a heavy metal complex compound.  Examples of the following dyestuffs are given: (1) 6-chloro-2-aminophenol-4-sulphonic acid --> resorcinol \sM dehydrothiotoluidine sulphonic acid or 4<1>-nitro-4-aminodiphenylamine sulpho acid treated with chromium formate; (2) anthranilic acid --> m-aminophenol (chromed) \sM p-nitroaniline-3-sulphonic acid; (3) nitro-1-amino-2-naphthol-4-sulphonic acid --> resorcinol (chromed) \sM naphthionic acid; (4) the dyestuff of (3) coupled alkaline with diazotized p-nitroaniline; (5) 4-nitro-2-aminophenol - 6 - sulphonic acid \sQ m - phenylene diamine treated with chromium sulphate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-781723-A (GB)
Title: Improvements in and relating to the production of pre-stressed reinforced concrete
IPC: E04G21/12
Filed: 1953-12-04
Abstract: 781,723. Reinforced concrete. MORANDI, R. Dec. 4, 1953 [Dec. 6, 1952], No. 33858/53. Class 20(4) Concrete is pre-stressed by a jack A, the annular piston B of which carries a chuck C having tapered grooves into which the reinforcement rods J are jammed by a wedge plug, the jack bearing against a plate M, in contact with the concrete, which plate serves as an abutment for a chuck I, likewise provided with tapered grooves into which the rods are jammed by a wedging plug K. The chuck I holds the rods in tension when the jack A is released, but is releasable when it is necessary to re-apply the jack to re-tension the rods. The jack bears on the plate M through legs H which are formed with keys 0, the ends of the keys bearing upon a ring G when the ring is turned to bring the keyways N and the keys O out of alignment. When the ring is turned to align the Keys and keyways, it may be slid over the keys out of contact with the chuck I. The plug K is prevented from falling out by a cross pin F, which is withdrawn to permit a rod D to be hammered against the plug to jam it into gripping position, the chuck I being held against the plate M by the ring G. The pressure admitted to the jack is a measure of the tension applied to the rods, and then the apparatus is re-applied to tensioned rods to measure the residual tension. or to re-tension, the rods, the hydraulic pressure is again used as a measure.
Patent GB-1495238-A (GB)
Title: Tampon applicators for compressed plug-shaped tampons
IPC: A61F13/26
Filed: 1976-08-13
Abstract: 1495238 Tampon applicator VEREINIGTE PAPIERWERKE SCHICKEDANZ & CO 13 Aug 1976 [22 Aug 1975] 33886/76 Heading A5R A tampon applicator comprises a tampon receiving cup 2 provided with a handle 4, for receiving the tampon string 6, and a removable cap 7 which is friction-fitted, snap-fitted screwed or bayonet-fitted to the cup 2. The handle may have a notch 15 to hold the string and may have thinner walled portions to increase flexibility and tension the string. The interior of the cup is preferably frustoconical, widening towards its top and readily releases the tampon upon withdrawal.
Patent GB-209271-A (GB)
Title: Improvements in apparatus for use in applying bituminous, or like matter liquefiable by heat, to roadways, or other surfaces
IPC: E01C19/17
Filed: 1922-12-12
Abstract: 209,271. Dale, H. L. Dec. 12, 1922. Cauldrons; surface treatment with liquid materials.-Relates to tar boilers having a tar pump a<4> which normally draws tar through inlet valves d<3> for delivery to the sprayer through pipes e, but which is adapted to scavenge the tar passages by drawing hot air from the furnace flues B<4> through a pipe k and valve k<2>. According to the invention, the hot-air valve k<2> and the tar valves. d<3> are interconnected, as by linkage d<5>, d<4>, so as to be simultaneously operated. The arrangement is such that, when a handle: l is operated to close the valves d<3>, the valve k<2> is opened and vice versa. In the form shown, a double-acting tar pump is mounted within the tar space and is worked by a hand-lever a<5>.
Patent GB-836362-A (GB)
Title: A mechanism for a synchronous motor clock
IPC: G04C15/00
Filed: 1957-10-31
Abstract: 836,362. Toothed gearing. SUNDT, E. V. Oct. 31, 1957, No. 33998/57. Class 80 (1). [Also in Group XVIII] In a synchronous motor clock the gear train to the hands includes a preferably plastic wobble gear 38, Fig. 3, on an inclined crank 33 and an eccentric gear 54. The wobble gear toothed ring 39 has one more tooth than the normally stationary reaction gear 27 and the toothed ring 41 has one more tooth than the driven gear 47. The gear ring 40 of the wobble gear 38 has the same number of teeth as the driven gear 44. The sleeve 49 of the gear 47 has an eccentric portion 52 which supports the gear 54 the teeth 55 of which co-operate with the reaction gear 56 formed in the dial plate 16 and with the driven gear 58 which has one more tooth than the gear 54. The hours, minutes, seconds and fractions of a second hands 65, 64, 63, 62 are attached to the appropriate shafts.
Patent GB-1462833-A (GB)
Title: Proximity indicating system
IPC: G01S13/933
Filed: 1974-02-20
Abstract: 1462833 Radio navigation LITCHSTREET CO 20 Feb 1974 [27 March 1973] 34024/76 Divided out of 1462831 Heading H4D The disclosure is part of that of Specification 1,462,831, the claims relate to the selection of the mode of operation of the adaptive proximity indicating system in accordance with the altitude of the aircraft.
Patent GB-1103067-A (GB)
Title: The division of semiconductor wafers into wafers of smaller face area
IPC: H01L21/00
Filed: 1966-07-28
Abstract: 1,103,067. Etching. SIEMENS-SCHUCKERTWERKE A.G. 28 July, 1966 [28 July, 1965], No. 34048/66. Heading B6J. [Also in Division H1] A wafer of semi-conductor material, such as silicon or germanium, is divided into smaller wafers by a method involving covering at least one major face of the wafer with etch resistant, scoring lines definng the peripheries of the smaller wafers through this covering, and dividing the wafer by an etching process in which the scored covering serves as a mask. During the scoring, all the peripheries are traced simultaneously, each by a separate tool. Figs. 1 and 2 show one form of the scoring apparatus. This consists of a holder 1 for the wafer 2 and two sets 26, 28 of spring-loaded scoring tools 27. The holder 1 is connected to a beam 6 which pivots on a crank-pin 7 which is driven in a circular path about the axis of a shaft 9. Linkwork 10, 11, 14, 19, 20 between the beam 6 and a fixed member 23 ensures that the beam 6, and thus holder 1, follows bodily the circular motion of the pin 7. In use, gearing 41, 40, 39 is first driven to bring the tools into contact with the wafer 2 and the drive is then switched to shaft 9 to rotate the wafer between the sets of stationary tools. The tools thus each trace a circular path 42 on the coated wafer surface. Figs. 3 and 4 (not shown), depict variants of the guiding linkwork 10, 11, 14, 19, 20 of Fig. 2, in combination with a modification of the holder 1, the modified holder being capable of carrying two semi-conductor wafers. Figs. 5 to 7 (not shown), depict alternatives to the simple crank-pin drive of Fig. 2, such that the scored peripheries are hexagonal or rectangular or elliptical, instead of circular. Whilst in Figs. 1 and 2 the wafer rotates beneath stationary tools, it is possible to rotate the tools with the wafer held stationary. Such an arrangement is depicted in Fig. 8 (not shown).
Patent GB-1312808-A (GB)
Title: Heat-shrinkable ethylene polymer films
IPC: C08L23/04
Filed: 1970-07-14
Abstract: 1312808 Heat-shrinkable films E I DU PONT DE NEMOURS & CO 14 July 1970 [15 July 1969] 34105/70 Heading B5B [Also in Division C3] Heat-shrinkable films are prepared by melt extruding at 190‹ to 225‹ C. homogeneous blends of (1) 70 to 80 weight per cent of polyethylene or ethylene/vinyl acetate copolymer containing 1 to 6 weight per cent of vinyl acetate, the polymer having a density of 0À91 to 0À93 g./c.c., a melt index of 1À5 to 12À0 and a melting point of 95‹ to 110‹ C., and (2) 30 to 20 weight per cent of an ethylene/α-olefin copolymer having a density of 0À94 to 0À98 g./c.c., a melt index of 0À2 to 1À5, a stress exponent of at least 1À5 and an ultimate elongation of at least 1400% at 120‹ C., stretching the resulting film to at least 3 times its original dimensions in each of two perpendicular directions at 90‹ to 120‹ C., and thereafter cooling the film while maintaining its stretched dimensions. Preferred high density copolymers are of ethylene with octene-1 or decene-1, and the compositions may also comprise 2,6 - di - t - butyl - 4 - methylphenol, oleamide, stearamide and silica. Preferably the compositions are extruded and oriented by a tubular process and stretched at least 5 times the original dimensions to provide films with a shrinkage of at least 20% along each axis.
Patent GB-1397419-A (GB)
Title: Charger for electric storage batteries
IPC: H02J7/00
Filed: 1972-07-21
Abstract: 1397419 Battery charging circuits GOULD Inc 21 July 1972 [31 Aug 1971] 34115/72 Heading H2H A circuit for charging a battery 28 comprises an A.C. source 25, a bridge rectifier 27 and a transformer 26 having a leakage reactance which enables a suitable charge terminating current to be supplied to the battery without undercharging or overcharging the battery. The leakage reactance is provided by mounting the transformer windings on a common core but separated from each other by an air gap. Initially contacts T1a, T1b of a timer T1 are closed and as the battery approaches full charge a relay coik K1C is energized sufficiently to close contact K1 and start the timer T1. At the end of a pre-set time the contacts T1a, T1b are opened to terminate the charge. A timer T2 having a contact T2<SP>1</SP> enables periodic recharging of the battery and a thermistor 31 provides a temperature dependent control of the relay. In a modification a circuit including a thyristor and a Zener diode controls the current through the relay coil. The relay may be replaced by a thyristor.
Patent GB-1216843-A (GB)
Title: Sponges containing detergents or other materials
Inventor: TAYLOR DEREK PETER
IPC: A47L13/17
Filed: 1967-07-25
Abstract: 1,216,843. Sponges containing detergents or other materials. HOWLAN INVESTMENTS Ltd. 19 July, 1968 [25 July, 1967], No. 34116/67. Heading C5D.  A method of making a sponge containing a detergent or other liquid soluble material in which at least a part of the sponge is formed by chemical reaction adjacent to a mass of the detergent or other material and serves to retain the mass inside the sponge.
Patent GB-348623-A (GB)
Title: Improvements in or relating to the treatment of oleaginous and leguminous grain
IPC: A23L25/00
Filed: 1929-11-08
Abstract: A vegetable cheese is obtained from oleaginous and leguminous materials containing vegetable casein, e.g. soya beans, arachis nuts, sesame and flax seeds &c., by husking, and if necessary decorticating, and then grinding the material, and treating it with water made slightly alkaline, the pulp obtained being mixed with water and then treated centrifugally.  The residues are returned to the grinder.  The casein is precipitated from the milky liquid obtained in the centrifugal treatment and is separated centrifugally, giving the vegetable cheese.  The material may be extracted by a jet of water in apparatus comprising a worm rotating in a channel perforated with small holes, the amount of water used being about 8-10 times the weight of the material.  The casein may be precipitated by rennet or an acid or other suitable reagent, the casein carrying down with it the oil.  Non-oleaginous material may also be treated, fatty material of animal or vegetable origin being added to the precipitated vegetable casein.  Foreign fatty material may also be added to the casein derived from oleaginous material. Where the vegetable material has too high a fat content a part of the fat may be separated centrifugally to reduce the fat content of the product to that of ordinary cheese.  The milky product may be treated centrifugally to separate part of the fat, and foreign fatty matter added to restore the fatty content to that of ordinary cheese.
Patent GB-461033-A (GB)
Title: Improvements in or relating to indicating instruments
IPC: G01P1/02
Filed: 1935-12-10
Abstract: 461,033. Indicating - apparatus. ARCHBALD, R. H. Dec. 10, 1935, No. 34252. [Class 106 (iv)] The casing 10 of an indicating instrument has a cover comprising a transparent or windowed end 11 and a peripheral flange 12 extending at right-angles to the end 11 and having means for attachment to the casing 10, the peripheral flange 12 being transparent for the whole or a part of its depth, so that the instrument can be illuminated in a lateral direction from an external source 23. The cover may be made in a single-piece moulding from transparent synthetic resin and may be attached to the case by a screw thread 13. The end 11 has a flange 17 which, in conjunction with a bridge piece 15 and nut 16, holds the instrument in place in a panel 21. Lamps 23 may be placed behind the panel and may be in a compartment as shown. One lamp may be common to several instruments. An opaque ring 24 is painted round the end 11.
Patent GB-427986-A (GB)
Title: Improved torsion meter
IPC: H01M4/02
Filed: 1933-12-06
Abstract: 427,986. Rotary transmission dynamometers. WATTS & SON, Ltd., E. R., GUTHRIE, W. J., and TOWNS, V. W. H., 123, Camberwell Road, London. Dec. 6, 1933, No. 34285. [Class 106 (ii)] Relates to apparatus in which the relative twist between two defined axially spaced points of a shaft is measured, and consists in securing a member at each of the two points, one member carrying a scale and the other a microscope, an index line or the like in which provides an indication on an enlarged image of the scale. Two collars a, b are formed on or secured to the shaft at a suitable distance apart. To the collars are secured sleeves c, k. Upon the free end of the sleeve c is arranged a housing e carrying a scale f, the face of which is square to the shaft and which may be illuminated by lamp g, the rays of which may pass through a lens h on to a mirror i by which it is directed on to the translucent glass of the scale. On the sleeve k is mounted a microscope which may be provided with an axial adjustment to align it with the scale. The microscope is fitted with an index line and final adjustment of this with respect to the scale is secured by means of the scale-adjusting screws. The objective of the microscope may project into the housing e, a pentagonal or other prism m being fitted as shown. The eyepiece may be arranged for axial observation or as shown for radial observation, a fixed baffle n-of cylindrical form in the latter case-being provided and fitted with an eye-shield o. A dark background p may be provided. The scale is roughly midway between the collars a, b.
Patent GB-1504425-A (GB)
Title: Salts of clavulanic acid
IPC: C07D503/00
Filed: 1975-08-20
Abstract: 1504425 Salts of clavulanic acid BEECHAM GROUP Ltd 23 July 1976 [20 Aug 1975 27 Sept 1975] 34518/75 and 39664/75 Heading C2C Pure solid sodium and potassium salts of clavulanic acid are prepared by hydrolysis of an ester of clavulanic acid in an aqueous media containing a sodium or potassium base and thereafter rotating the salt.
Patent GB-1011580-A (GB)
Title: Surface treatment of mild steel
Inventor: MITCHELL ERIC
IPC: C23C8/26
Filed: 1961-09-27
Abstract: Mild steel containing up to 0.2% of carbon is heated in an atmosphere of ammonia between 450  DEG C. and 590  DEG C. to form a surface layer containing iron nitride and below it a layer containing nitrogen in solid solution, the steel then being cooled sufficiently rapidly to retain the nitrogen in solution.  The nitriding atmosphere may also contain a hydrocarbon or other carbon containing gas.
Patent GB-174333-A (GB)
Title: Method and apparatus for testing electrically insulated wires
IPC: G01R31/02
Filed: 1921-12-23
Abstract: 174,333. Mollerh¾j, J. S. Jan. 15, 1921, [Convention date]. Locating faults in insulation.- In testing electrically-insulated wires or cable by applying a voltage between the conductor of the cable &c. and an outer electrode, the air around the outer surface of the dielectric of the cable &c. being ionized, the electrode comprises a bath of small metallic balls or cylinders or small conducting members of other shape, through which the cable &c. is drawn. In the form shown, a receptacle e containing small metallic spheres d such as lead slot is used as the outer electrode, the air pressure in the receptacle e being reduced if necessary so that the testing voltage applied between the spheres d and the conductor of the cable b may produce the ionization of and puncture the air layer c. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following modifications: metallic chains may be used instead of metallic spheres; a comparatively long conducting tube, through which the cable slides and which fits the cable closely may be used as the outer electrode, the interior of the tube being connected at a point between its ends to a suction device by means of which low pressure may be produced and maintained in the tube; or the ends of this tube may be provided with stuffing-boxes through which the cable slides during the test, so that a shorter and wider tube may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-931976-A (GB)
Title: Improvements in or relating to paper-making machines
IPC: D21F9/00
Filed: 1959-10-13
Abstract: 931,976. Paper-making machines; paper. BLACK-CLAWSON CO. Oct. 13, 1959 [Oct. 13, 1958], No. 34676/59. Class 96. A paper-making machine comprises two perforate forming webs looped around two breast rolls and two couch rolls and so arranged that in the forming zone they travel vertically but slightly convergently and means for delivering liquid stock to the nip between the breast rolls. As shown, pulp is supplied from a flow-box 40 to the nip between two wire-cloths or felts or woven bands 25, 35 travelling about breast rolls and between pairs of suction rolls 21, 31 &c. which co-operate with seal rolls 130 to form suction enclosures so that the pulp is under suction from both sides throughout its vertical travel. White water passes into the suction rolls directly at the nips, and intermediately via deflector plates 155 which prevent pools of water from forming near the nips. Seals between the opposed edges of the adjacent portions of the forming webs to prevent lateral flow of stock from the space between them, or entry of air into the space comprise tubes of flexible material, e.g. polyethylene filled with a liquid at a pressure higher than that exerted on the tube by the stock. The height and lateral position of the flow-box 40 are adjustable by screws 173 coacting with sloping support-blocks 171. The wirecloths &c. are cleaned by showers 50 and the suction rolls by showers 53. Jets 54 trim the edges of the web, the strips 55 being removed as illustrated. The trimmed web is couched at 47 to a felt 46. The whole assembly is supported on four pedestals (two shown at 61 and 63), each section having provision for pivotal movement about a vertical axis on the pedestal, not shown, and having support blocks 74 which may be removed from the pedestal 61 or 63, pistons 75 raising the section for this removal and then being retracted, so that the section may be turned about its pivot for wire-changing &c. The interiors of the pedestals, not shown, are hollow and are connected with a source of vacuum, so that they act as conduits for the removal of white water. Rolls of the take-off section may be synchronized with the presssection, and the other forming-section synchronized by electric tachometers 106. The Specification includes also the subject-matter of Specifications 931,977 and 931,978. If the stock comprises fibres of different lengths and filler materials, then in the finished paper the longer fibres will be concentrated towards the centre of the thickness of the sheet, and the shorter fibres and filler materials towards both surfaces. Both surfaces then have practically matching physical characteristics, and require minimum amounts of surface coating before being printed upon.