baber/WOPTO huggingface dataset:
Patent GB-808817-A (GB)
Title: Differential gears
IPC: F16H48/08
Filed: 1956-07-04
Abstract: 808,817. Differential gearing. AUSTIN MOTOR CO. Ltd., and HARNOTT, J. R. June 28, 1957 [July 4, 1956], No. 20659/56. Class 80 (2). In a worm or bevel driven differential gearing having planetary pinions 15 meshing with sunwheels 16 on axially aligned output shafts 17, the planet pinion carrier 14 is in the form of a one-piece housing closely confining the planet and sun-gears having axially opposed bearings 18 for the output shafts 17 and a lateral opening 21 through which the gears can be entered, and the output shafts 17 are tubular with longitudinally split 25 and splined ends expanded into corresponding splined bores of the sungears 16 by expander bolts 28 axially adjustable by nuts 29 reacting on the outer ends of the shafts 17.
Patent GB-808408-A (GB)
Title: Improvements in or relating to radio beam transmitting and receiving arrangements of variable directivity
IPC: H01Q3/26
Filed: 1957-07-01
Abstract: 808,408. Waveguide accessories. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. July 1, 1957 [July 13, 1956], No. 20668/57. Class 40 (8). [Also in Group XL (c)] In a conical scan aerial system, means 3 produce a rectalinearly polarized electromagnetic wave in a circular guide with the E vector parallel to the axis Oy. This passes directly (though the Figure shows the parts separately) into a circular guide 1 where it is subjected to the gyromagnetic effect of a magnetic field H1 of variable intensity but constant axial direction. The strength of this field is varied in sawtooth manner between limits such that the angle α in the plane xOy through which the electric vector E 1 of the emergent energy is turned varies between O and #. Guide 1 leads into guide 2 wherein the wave is subjected to the field displacement effect of a constant intensity magnetic field H2 which has a variable direction maintained parallel with that of the vector E 1. At the end of guide 2 the energy is concentrated in a segments # whose bounding cord is parallel to E1. A dielectric frusto-conical member 6 radiates the energy as indicated at F1. The gyromagnetic effect is produced by a ferrite rod 4 with tapered ends axially arranged in the guide 1. It is preferably supported by solid dielectric material and because of the high dielectric constant of the ferrite and the dielectric the diameter of the guide is reduced where they are present. Tapered transition sections are provided to prevent abrupt impedance discontinuities (Fig. 3, not shown). An energizing solenoid is wound round the guide. The field displacement effect is achieved in a waveguide coated internally with a ferrite layer 5 in which is set up a uniform magnetic field H2. The control and synchronization of the devices producing the two effects is described with reference to Figs. 4 and 5 (not shown).
Patent GB-910262-A (GB)
Title: New nicotinic acid esters and methods of producing them
Filed: 1961-06-08
Abstract: The invention comprises nicotinic acid esters of the general formula <FORM:0910262/IV (b)/1> and their acid addition salts in which R1 and R2 which may be the same or different, are hydrogen atoms, or alkyl groups containing not more than 6 carbon atoms, and R3 and R4 which may be the same or different are straight or branched chain groups having the empirical formula (CH2)m in which m is an integer between 1 and 6 inclusive and the preparation thereof by reacting a dialcohol of the general formula <FORM:0910262/IV (b)/2> with a nicotinic acid, nicotinic acid chloride or a lower nicotinic acid ester.  Ointments with a hyperaemic effect may be prepared from the esters of the invention.
Patent GB-460211-A (GB)
Title: Improvements in cables suitable for the transmission of high frequency electric currents
IPC: H01B11/18
Filed: 1935-07-22
Abstract: 460,211. Cables. GRENFELL, A. R. July 22, 1935, No. 20812. [Class 36] In a high frequency airspace cable comprising a conductor supported within a hollow sheath by an insulating strip of zigzag or other wavy shape, the strip comprises two strip elements and the conductor is accommodated in slots formed in one of the strip elements and is retained therein by the other strip element. In one construction each strip element is of the form shown in Fig. 1, having along its centre line a series of slots 2 which are spaced apart by a distance equal to the length of a slot. Two similar strip elements 1, 4, Fig. 2, having gummed surfaces, are arranged face to face with the conductor 3, disposed axially between them and with the slots 2 in one strip element opposite the spaces between the slots 5 in the other strip element. The strip thus formed is then passed longitudinally between a pair of intermeshing toothed wheels so that it is deformed into the wavy form shown in Fig. 3. The teeth of the wheels are provided with central notches which allow the conductor to pass between the wheels without deformation. The deformed strip, which may be twisted about the axis of the conductor, is surrounded by a paper wrapping 18, Fig. 4, which is enclosed in a lead or braided wire sheath 19. To prevent tearing of the strip elements, the ends of the slots may be enlarged, or short transverse cuts may be formed in the strip elements at the ends of each slot. A plurality of conductors may be carried by a single strip. According to the Provisional Specification the sheath surrounding the conductor is formed by a paper strip which is lapped about the conductor and which has inwardly bent projections for centring the conductor within the sheath.
Patent GB-499827-A (GB)
Title: An improvement in the manufacture of viscose artificial silk
IPC: D01F2/06
Filed: 1937-07-28
Abstract: Viscose artificial silk of uniform mat lustre is obtained by spinning in a Müller bath, containing magnesium sulphate or both magnesium sulphate and zinc sulphate, a viscose of high viscosity prepared from unripened alkali cellulose, in which is emulsified an additional liquid substance which is insoluble or sparingly soluble in the viscose.  The viscose has a viscosity exceeding 50 seconds as measured by the falling ball method.  In this method, the time taken for a steel ball of 3 mm. diameter to fall through a column of 20 cms. of solution at 20 DEG  C. is noted.  The added substance may be an aliphatic or hydroaromatic alcohol or a mixture of alcohols such as a mixture of higher alcohols produced in the catalytic manufacture of alcohols, or fenchyl alcohol, terpene alcohol, or a mixture of hydroaromatic alcohols such as pine oil.  Dispersing agents such as alkyl esters of high molecular fatty acids, or turkey red oil, may be added.  The sparingly - soluble substance may be added during the production or comminution of the alkali cellulose or with the carbon bisulphide or after xanthation during dissolution of the xanthate, or it may be emulsified with part of the spinning solution and then with the whole mass.  The artificial silk produced is especially suitable for the stocking industry and for weaving.
Patent GB-479039-A (GB)
Title: Improvements in and relating to electric heat radiators
IPC: F24C15/08
Filed: 1936-07-29
Abstract: 479,039. Wall brackets. MORPHYRICHARDS, Ltd., and MORPHY, D. W. July 29, 1936, No. 20929. [Class 52 (v)] The base 5 of an electric pedestal heater has an aperture 8 adapted to engage a hook 3 on a wall plate 1 and a recess adapted to engage a central rib 4 on the plate. An enlargement 9 in the aperture engages a tongue 2 on the plate. The Provisional Specification refers to domestic electric appliances such as fans and to the association of plug and socket supply connections between the two parts of the bracket.
Patent GB-646410-A (GB)
Title: Improvements in and relating to dielectric compositions
IPC: H01B3/24
Filed: 1948-08-09
Abstract: Dielectric and insulating composition comprises a mixture of fluorinone and halogenated fluorinone.  Chlorine is the preferred halogen.  The components may be separately made and blended or fluorinone may be chlorinated to the degree necessary to give the required mixture.  Other dielectrics, e.g. chlorinated anthracene and chlorinated naphthalene can be added.
Patent GB-1531805-A (GB)
Title: Semiconductor varactor device and electronic tuner using the same
IPC: H03J3/18
Filed: 1976-05-20
Abstract: 1531805 Varactor device; printed circuit assemblies SONY CORP 20 May 1976 [20 May 1975] 20952/76 Headings H1K and H1R A varactor device 1 particularly for use in an UHF tuner, comprises a plurality of varactor elements in a semi-conductor body 8, separated by a semi-conductor region 6 of one conductivity type, each varactor element including a PN junction formed between regions 10a, 11a or 10b, 11b; an electrode 5 contacting the region 6; a plurality of electrodes 4a, 4b each in contact with the respective region 11a, 11b, and individual electrical conductors typically in the form of nodules 2a, 2b, 3a for each of the electrodes 4a, 4b and 5 respectively. The electrode 5 is preferably in the form of a cross, Fig. 1 (not shown), and four varactor elements are disposed at the corner of a square. A printed circuit board 15 having electrically conducting strips 12, (13a-13d) thereon is bonded to the nodules so as to facilitate the mounting of the varactor elements in a chassis of a UHF tuner, Fig. 3B. The semi-conductor body 8 is provided with a metallic layer 14 which is bonded to shielding members 16a, Fig. 3b, by soldering or by using a conductive resin (17), Fig. 5 (not shown). Various stages of a UHF tuner, each mounted in a compartment formed by the shielding members 16a, and each including a varactor element, are isolated from each other by earthing the cross-shaped conductors 12 and the shielding members 16a. A modified printed circuit board, Fig. 7 (not shown), typically of alumina, comprises a conductive coating (20) on its other surface, the coating also extending through holes (22a-22d) in the board to contact the cross-shaped conductor 12 and thereby reduce stray capacitance between varactor elements.
Patent GB-149211-A (GB)
Title: Electric discharge vessels
IPC: H01J21/02
Filed: 1920-07-12
Abstract: 149,211. Huth Ges., Dr. E. F. Dec. 29, 1917, [Convention date]. Vacuum tubes.-A tube such as a thermionic valve has a cathode, two concentric openwork electrodes of general cylindrical form and of different diameters, and a cylindrical anode, the potentials on the openwork conductors being of an oscillating, alternating or like variable character. As shown in Fig. 1, a filament-cathode is wound around an axial glass support 7, or an insulated metal tube, the controlling electrodes consisting of two concentric helical coils 10, 11 spaced by insulating or conducting supports 12, 13. The metal tube support may be maintained at any desired potential. The controlling electrodes may be in parallel or may be connected with circuits having different frequencies, for instance of high or low values or frequencies producing beats. The anode 2 is mounted on glass rods 3, 4. According to the Specification as open to inspection under Sect. 91 (3) (a) a thermionic valve may have one or two controlling electrodes so shaped or arranged that the resulting field due to them is uniform in spite of the drop of potential along the cathode, or the non-uniformity of the field due to this cause may be increased, for instance in a valve for use as a detector. In the arrangement shown in Fig. 3 (Cancelled), the grid consists of a wire 17 wound around grooved glass rods, so that the turns cross at the centre, one or more cathodes 20 being mounted adjacent to the centre. In the arrangement shown in Fig. 5 (Cancelled), a part f of a control electrode adjacent to the cathode g is made of concave shape. The anode a may be of similar shape or flat, and is mounted on the other side of the cathode. In another arrangement, Fig. 8 (Cancelled), the grid consists of a slotted plate 25, having tongues 23 bent radially or tangentially to the plate. Flat, cylindrical or spherical grids of very fine mesh may be used. In a further arrangement, Fig. 20 (Cancelled), the grid 37 is of spiral form with turns of increasing diameter, or of helical form with increasing pitch between the turns. The anode 32 may be of conical or cylindrical shape. Two anodes, one cylindrical and the other conical, may be used with a helical grid. The anode may consist of a wire helix or spiral. In the arrangement shown in Fig. 24 (Cancelled), a helical grid h is mounted around a curved wire or strip cathode k surrounding a central cylindrical anode a. Cylindrical or other screens w maintained at a negative potential are mounted around the grid. This subject-matter does not appear in the Specification as accepted.
Patent GB-810612-A (GB)
Title: Centrifugal governor, particularly for internal combustion engines with fuel injection
IPC: F02D1/04
Filed: 1956-07-06
Abstract: 810,612. Centrifugal governors. SATZGER, E. July 6, 1956 [July 12, 1955], No. 20975/56. Class 57. In a centrifugal governor, particularly for internal combustion engines with fuel injection, arranged on the end of a shaft, such as the injection pump shaft 2, and having its flyweights 9 driven through a flexible coupling, the weight carrier 8 is freely mounted on a sleeve 7 that is connected at one end to the shaft end and has at its other end a driver 11 which is detachable from the shaft end independently of the sleeve and is coupled to the carrier through resilient means, such as rubber members 12. The sleeve 7 is secured to the coned end of the shaft 2 by a nut 6 and the driver 11, which is rotatably locked to the sleeve 7 by a pin 29, has a part 21 extending into the sleeve 7 and secured to the nut 6 by a screw 23. The rubber members 12 are compressed against cheeks 14 of the carrier 8 and have arcuate surfaces engaging concave recesses 13 in the driver 11, the radius of curvature of the recesses exceeding that of the members. The carrier 8 is held in engagement with a face 18 of the driver 11 by a spring 17 bearing on a collar 10 on the sleeve 7. A pin 25 extending through axial slots 26 and 27 formed in the part 21 and in the sleeve 7 respectively connects the weight arms 24 to the governor sleeve 20. The sleeve 7 is coned at its free end and engages a coned recess 28 in the driver 11. In a modification, the rubber members 12 are replaced by leaf springs extending between the cheeks 14 and bearing against flat surfaces on the driver 11.
Patent GB-333362-A (GB)
Title: Improvements in self-acting mules
IPC: D01H3/06
Filed: 1929-07-08
Abstract: 333,362. Sokal, S., (Sõchsische Maschinenfabrik vorm. R. Hartmann Akt.-Ges.). July 8, 1929. Mules and twiners.-In a self-acting mule of the type driven by two electric motors 1, 2, the former driving the carriage and drawing rollers and the latter arranged on the carriage square driving the tin-roller shaft, through a differential gear, the motor 2 is adapted to drive the differential gear 11 on the tin-roller shaft through gearwheels 6, 7, 9, 10 the wheels 7, 9 being mounted on an intermediate shaft 8 and serving as change wheels.
Patent GB-655213-A (GB)
Title: Idlers for use in connection with belt conveyors
IPC: B65G39/02
Filed: 1948-08-09
Abstract: 655,213. Belt conveyers. SUTCLIFFE MOULDED RUBBER CO., Ltd., SUTCLIFFE, T. D., and GLOVER, A. Aug. 9, 1948, Nos. 21012/48 and 6998/49. [Class 78 (i)] An idler or troughing roller comprises a metal shell f mounted on a spindle and provided with a rubber cover c which has ribs or bars d upstanding from its outer surface. The ribs may be arranged parallel or inclined to the axis of the roller or in chevron or helical form. In the case of a belt supported by sets of rollers each comprising a central idler with a wing idler on each side, ribbed rollers are arranged in alternate sets on opposite sides of the belt.
Patent GB-300979-A (GB)
Title: Improvements in or relating to chains for endless track vehicles
IPC: B62D55/04
Filed: 1928-07-19
Abstract: 300,979. Soc. Lagache et Glaszmann. Nov. 22, 1927, [Convention date]. Endless-track vehicles.-An endless-track comprises U. or channel-shaped links 6 connected together by bolts 8 which pass through the flanges of the links and through rubber or other buffers 9 which are higher than the flanges and so extend beyond them. The flanges grip the surface on soft ground, and the buffers act as the ground-engaging surfaces on hard roads. The links are formed with central projections 10 to engage between twin tyres, as shown in Fig. 2, or they may be formed with side projections to engage the sides of a single tyre. The holes 11 for the bolts 8 are elongated.
Patent GB-187743-A (GB)
Title: Improvements in apparatus for conveying material from place to place, more especially intended for use in loading and unloading barges and other vessels
IPC: B65G63/06
Filed: 1921-08-08
Abstract: 187,743. Wellman Smith Owen Engineering Corporation, Ltd., and Smith, J. Aug. 8, 1921. Transporters; jib cranes.-Apparatus for unloading vessels comprises a grab F or other suitable device, carried by a luffing crane A or by an overhead traveller or equivalent, a skip H, and means for traversing the grab and skip alternately towards and away from each other. The grab delivers to the skip in the position F<1>, H<1>, and the skip delivers to storage K or to trucks d when the grab is at F. The grab moves a set distance according to the position of the vessel E, whilst the travel of the skip may be limited as desired. As shown, the jib A is luffed inwards by a weight m on paying out the rope A<5> from the drum A<4>. Movement of the jib is transmitted to the skip H by a rope I fixed to the frame B at a<3>, reeved over pulleys i, i<2> - i<10> and fixed at i<12>. The skip is moved to the left by contraction of the loop i<5>, i<6>, i<7>, and to the right by a rope J attached to the skip and to a fixed point j<6> and kept taut by a weight j<5> hanging in the loops j<4>, j<6>. Movement of the skip to the left may be stopped at any point by a brake on the pulley j<1>, or by preventing the weight j<5> from rising, the continued outward movement of the jib A then merely lifting a weight i<11>, which is suspended in the loops i<9>, i<10> of the rope I but normally rests on a platform O. In a modification, the rope I is wound upon a drum geared to the luffing drum, and the rope J is attached at its ends to opposite sides of the larry and passes over a pulley at each end of the structure B, the counterweight j<5> and loops j<4>, j<6> are dispensed with, the larry moving to the right under gravity or by driving the pulley j<1> so as to haul on the rope J.
Patent GB-668530-A (GB)
Title: Method for the pyrolysis of ricinoleic esters
IPC: C07C51/09
Filed: 1948-08-10
Abstract: Heptanal and undecylenic acid or esters thereof are prepared by pyrolysis of ricinoleic esters or mixtures of such esters, the ricinoleic esters being brought into contact with an inert body, stable and solid or liquid at the reaction temperature, heated to between 400 DEG  and 650 DEG  C., and at such a rate that the said esters vaporize as fast as they arrive in contact with the heated body, the vaporized reaction products being removed from the reaction zone as soon as they are formed and rapidly condensed.  The preferred ricinoleic esters are those formed from monohydric alcohols having less than 6 carbon atoms; the ricinoleic esters may be used in the form of esters of the mixed acids from castor such as the alcoholysis products of castor oil with lower aliphatic alcohols.  These esters yield heptanal and undecylenic esters on pyrolysis; castor oil itself may be used whereupon heptanal and undecylenic acid are formed together with some glycerol undecylenate from which more undecylenic acid may be recovered.  The pyrolysis may be effected on heated metal surfaces such as steel, cast iron and other metals or alloys whose melting-points exceed 650 DEG  C., as well as metals and alloys fusible below 650 DEG  C., molten salts and refractories such as quartz.  Suitable types of apparatus are described.  In examples employing apparatus comprising a quartz tube closed at its lower end and placed vertically in an electric furnace and having an inlet tube and pyrometer contacting the upper surface of a contact body and an outlet tube connected to a condenser, the mixed methyl esters obtained by alcoholysis of castor oil with methanol are pyrolysed using (1) molten lead as contact material in the tube at 550-560 DEG C.; and (2) quartz sand at 480-500 DEG  C., and the mixed ethyl esters obtained by alcoholysis of castor oil are pyrolysed using stainless steel as contact body at 550-570 DEG  C.; in each case the condensed products are distilled to recover heptanal and methyl or ethyl undecylenate and the residue is recycled.
Patent GB-479049-A (GB)
Title: Improvements relating to motor vehicle wind screen wipers
IPC: B60S1/18
Filed: 1936-07-30
Abstract: 479,049. Windscreen - cleaners. LUCAS, Ltd., J., and MASON, S. A. July 30, 1936, No. 21077. [Class 138 (i)] [Also in Group XXIV] Means for actuating windscreen-wipers for motor vehicles comprises one or more flexible reciprocatory racks engaging one or more pinions or like toothed parts, for transmitting motion from a source of power to the wiper or wipers. In the construction shown, a suctionoperated piston within a cylinder a is connected to a flexible rack comprising helically-wound. wire d carried on a stranded wire or other flexible core e. The rack engages a pinion f to the shaft of which is connected a wiper arm j. The pinion f also engages one end of a second flexible rack, the other end of which engages a pinion m for the purpose of oscillating a wiper arm p. The wipers instead of being given oscillatory movement may be adapted to move with a parallel reciprocatory movement.
Patent GB-345906-A (GB)
Title: Improved arrangement for reducing the output of compressors
IPC: F04D27/02
Filed: 1930-07-11
Abstract: 345,906. Centrifugal compressers. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. July 11, 1930, No. 21091. Convention date, July 19, 1929. [Class 110 (i).] Multi-stage ; regulating.-In a multistage centrifugal compresser, in which two parallel low-pressure stages or groups of stages 1, 2 co-operate with the same high-pressure stage or group of stages HD and means are provided for cutting out one of the low-pressure stages when passing to low output, the stage 2 which may be cut out by closing valves 3, 4, is dimensioned for less than half the output. When the stage 2 is disconnected, the current passing to the high pressure section HD is throttled by means of a member 5 and the air contained in the idle stage 2 is drawn off by connecting this stage to the air exhaust of the condensing installation of the driving steam turbine.
Patent GB-280656-A (GB)
Title: Improvements in tightening and gripping devices for string
IPC: B65D63/14
Filed: 1926-08-28
Abstract: 280,656. Wollaston, H. J. Buchanan-. Aug. 28, 1926. addition to 243,635. Strap and cord fastenings.-A device of the kind described in the. parent Specification for securing string, ropes, straps &c., is stamped from one piece of metal to provide a base A, Fig. 1, with an open-sided perforation or slot into which the string can be passed laterally, the toothed member C which operates with the edges B of the slot to secure the string being formed on a tongue which is bent over at D to bring the teeth to the required position. Fig. 2 shows the blank for a modified form in which a. tongue E is provided adapted to be bent up and passed through a perforation F in member C. The tongue gives support to member C during the tightening of the string, and may be subsequently hammered flat to secure the string and may be covered with wax or molten metal to seal the fastening. Fig. 3 shows a form of blank, to be bent along the line D, provided with an aperture G to which the free end of the string may be secured by knotting. The fastenings are designed for use with string drawn from a ball &c. so that only one free end is available. Modified forms are described including one specially for flat webbing &c. and others for two strings drawn from separate balls and crossing each other at right-angles in parcelling.