baber/WOPTO huggingface dataset:
Patent GB-771913-A (GB)
Title: Improvements in or relating to cushion-tyred wheels
Inventor: DRAKEFORD GEORGE EDWARD
IPC: B60C7/12
Filed: 1954-03-05
Abstract: 771,913. Wheels. DUNLOP RUBBER CO., Ltd. March 1, 1955 [March 5, 1954], No. 6434/54. Classes 144 (1) and 144 (2). A wheel comprises integral rim, disc and hub portions 1b, 1c and 1a of vulcanite, which may be reinforced with a fibrous material such as cotton, rayon, fibre-glass, metal or nylon, and has a hollow, or sponge-rubber filled, rubber cushion tyre 4 vulcanized to its rim 1b. The wheel is formed by compression moulding and is initially partly cured and formed with circumferentially spaced radial ribs 1d. The tyre 4 comprises a length of extruded unvulcanized rubber which is applied to the roughened, vulcanite-solutioned, circumferentially -grooved rim surface and then butt-jointed prior to final curing of the assembly in a mould. A roller bearing housing comprising two interfitting pressed steel sleeves 2, 2a may be moulded integrally with the hub 1a, the axially outer ends of each sleeve being turned radially inwardly to retain the rollers 2b when mounted on a shaft 8. Alternatively a metal bush 5, Fig. 2, is moulded in the hub and the wheel is secured to a rotatable shaft by a set-screw 6. Specification 771,914 is referred to.
Patent GB-638950-A (GB)
Title: Improvements in shoe insoles
IPC: A43B7/22
Filed: 1948-03-01
Abstract: 638,950. Insoles. MIDGLEY, E. E., and MIDGLEY, D. March 1, 1948, No. 6453. [Class 17 (ii)] An insole comprises a single blank which is left at its full thickness over the heel seat area 5 but is reduced in thickness at the forepart 6, to increase the flexibility, and is skived along the line A to a thin edge 3 over the waist portion. An extension 2 may be provided to form a lateral arch support and a metatarsal pad 7 may be left at the full blank thickness. The blank is moulded to the desired shape and, if required, a metal shank stiffener is attached to the thick central part 4 of the waist.
Patent GB-657816-A (GB)
Title: Mixed fatty acid and rosin esters of resinous epoxides
IPC: C08G59/16
Filed: 1948-03-01
Abstract: Esters of resinous alkylene oxide polymers suitable for use in quick-drying coating compositions are obtained by esterifying 3.5-5 parts of a resinous epoxide having a softening point of 90-110 DEG C. (obtained by reacting dihydroxy-diphenylmethane, epichlorhydrin and alkali) with 1-2 parts of rosin and 3-5 parts of a long-chain unsaturated fatty acid, e.g. oleic, linoleic, licenic, linolenic, clupanodonic, eleostearic acids, which are present in drying and semi-drying oils.  Mixtures of fatty acids may be used, e.g. as found in linseed fatty acids, soybean fatty acids or cottonseed acids. Temperatures of 200-300 DEG  C. are employed and an inert gas is blown through the reaction vessel. The esters are soluble in hydrocarbons solvents and mixed with driers are used as quick-drying varnishes; pigments, e.g. titanium oxide, barium sulphate, calcium sulphate, zinc oxide, iron oxide, chrome yellow, alkyd resins and resin gums may be added.  In examples: (3) 50 parts epoxide resin, 8.44 parts W.G. rosin and 48.61 parts linseed oil acids in mineral spirits were refluxed at 250-260 DEG  C.; (4) 43.4 parts epoxide resin, 19.1 parts rosin, 18.1 parts linseed oil acids and 22.1 parts cottonseed fatty acids were similarly treated.  The resinous epoxide is prepared by reacting "Bisphenol A" and epichlorhydrin in presence of excess caustic soda which is added at intervals.  "Bisphenol A" is a mixture of the isomers of dihydroxy-diphenyl-dimethylmethane obtained by condensing phenol with acetone.
Patent GB-502340-A (GB)
Title: Improvements in or relating to machines for blowing hollow glassware
IPC: C03B9/24
Filed: 1937-06-08
Abstract: 502,340. Making hollow glassware. EVANS, W. E. (O'Neill European Machine Co. of Montreal). June 8, 1937, No. 6461/39. Divided out of 502,246. [Class 56] In a suction-gathering machine of the kind described in Specifications 315,154, [Class 56], and 470,326, each of the parison mould units is provided with cam-operated mechanism for adjusting the time at which the ring mould is opened. The halves of the ring mould 17, Fig. 1, are opened by a spreader 28 composed of two radial fingers secured to the lower end of a shaft 29 and extending between the mould arms. An arm 31, secured to the upper end of the shaft 29, is connected by a link 32 to a frame 34 pivoted at 35. The frame 34 carries a roller 36, and when this roller is moved inwards by a stationary cam, the spreader 28 is rocked and separates the mould halves 17. The roller 36 is slidably, mounted in the frame 34 and can be moved to and from the pivot 35 by a screw 38. The adjustment of the position of the roller enables the time at which the roller makes contact with its operating cam, and the time at which the mould is opened, to be adjusted. Specifications 502,246 and 502,339 also are referred to.
Patent GB-419789-A (GB)
Title: Improvements in rectiflers of the mercury arc type
IPC: H01J13/20
Filed: 1933-05-17
Abstract: 419,789. Mercury - arc rectifiers. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT, 75, Boulevard Haussmann, Paris. May 17, 1933, No. 6480/34. Convention date, May 25, 1932. Divided out of 421,401, [Group XXXV]. Drawings to Specification. [Class 39 (i).] A control grid is located below the anode and in the path of the arc therefrom, and consists of a wire mesh coated or covered with insulation such as quartz. Specifications 253,097 and 279,045, [both in Class 39 (i)], are referred to.
Patent GB-878838-A (GB)
Title: Air conditioning apparatus
Inventor: LEWIS RAYMOND CLAUDE
IPC: F24D13/02
Filed: 1959-02-25
Abstract: 878,838. Electrically heated doors. LEWIS, R. C. Feb. 12, 1960 [Feb. 25, 1959], No. 6496/59. Class 39(3). [Also in Group X] A ventilator for use in a door or operable panel 16 comprises two plates 10, 11 which are placed either-side of the door to cover a hole therein and to form an air duct, an aperture with mesh 12 towards the top of one of the, plates and an electrical heating device 18 between the plates below the aperture. A strip of flexible material 17 at the base of the door guides air into the duct and a fitter supported on brackets 20 may be incorporated. Protective plates 19 are positioned on the plates 10, 11 adjacent the heating element.
Patent GB-709425-A (GB)
Title: Apparatus for feeding flexible material during treatment
Inventor: MORRILL FRANK BAXTER
IPC: D06B23/04
Filed: 1951-03-19
Abstract: 709,425. Feeding webs. HUNTER MACHINE CO., J. March 19, 1951, No. 6541/51. Class 100 (1). [Also in Group VIII] Apparatus for feeding a length of flexible material in web or rope form during treatment comprises at least one resilient transport roll disposed in the path of travel of the material and variable in radius according to the pressure of the material thereon, means for driving the or each roll at a predetermined angular speed, and means for retarding the feeding of the material to the roll or rolls to limit the feed to a linear speed equal to the peripheral speed of the or each transport roll when at a radius intermediate its maximum and minimum. As shown in Fig. 1, a web of material F is fed to a container 10, containing water or other liquid, by feed rollers 17, 17a driven by an electric motor 22. A rotatable shaft 11 driven by an electric motor 24, carries a plurality of rollers 13 comprising flanges 13a secured to the shaft 11 which supports circumferentially spaced members 13b of rubber or other flexible material. When the members 13b in each roll 13 are unflexed they provide a roller of maximum radius. The fabric is fed by the rollers 17, 17a at-a speed, less than that at which the rollers 13 feed the material when the members 13b are unflexed so as to impose a slight tension on the web, the tension being adjustable by varying the speed of the motor 24. Thus, due to the tension, the members 13b will be slightly flexed. Should the web shrink during passage through the liquid in the container 10, then the consequent increase in tension causes flexing of the members 13b adjacent the shrunk portion, thus reducing the peripheral speed of the corresponding rol'er or rollers 13 which consequently feed the web more slowly to the next loop. For treating wide webs, rollers 32, Fig. 7, provided on parallel shafts 33 may replace the rollers 13. In this case,tangentially-extending resilient members 32a are secured to the flat faces of a member fixed to each shaft 33, while separate guide rolls 33a are provided below the liquid level. The means for retarding the material may alternatively comprise tension bars which have a snubbing effect on the web F.
Patent GB-736535-A (GB)
Title: Improvements in or relating to gas filters
IPC: B01D46/04
Filed: 1953-03-10
Abstract: 736,535. Engine valve-gear. G. G. ENGINEERING (LONDON), Ltd., WARREN, A. E., WHITTON, R., and WHITTON, R. S. March 10, 1953, No. 6633/53. Class 122 (2). [Also in Groups XXVIII and XXIX] A pneumatic or hydraulic motor piston 35, Fig. 3, for actuating an air filter bag shaking mechanism (see Group XXVIII) is normally held at the upper end of the motor cylinder by pressure fluid supplied from a source 43, e.g. a pump through lines 36, 40, a fluid actuated combined inlet and exhaust piston valve 41 and a line 42, and the downward stroke is initiated by the opening of a time switch controlled solenoid valve 44 which allows pressure fluid to flow along lines 46, 49 through an open valve 50 and along a line 51 to reverse the valve 41 and so allow access of pressure fluid to the cylinder space above the piston and connect the space below to exhaust through the line 42 and the valve 41. The piston rod 34, Fig. 5, carries a transom 57 to which is secured a rod 55 to which is adjustably secured a tappet 58 which at the beginning of the downward stroke closes the valve 50 and at the end opens a valve 53 to allow pressure fluid from the source 43 and line 36 to flow through a line 54 to the other end of the valve piston K<SP>1</SP>, Fig. 9, in order to return it to its initial position and so provide for continued reciprocation of the piston 35 during such time as the valve 44 remains open. The valve piston K<SP>1</SP> has a groove F which in the position shown connects the pressure line 40 and an associated port G to a port H leading to the line 42 and when the piston is displaced by pressure fluid in line 51, the groove F connects the line 40 with the line 52. Annular spaces J, J<SP>1</SP> are connected to exhaust.
Patent GB-561459-A (GB)
Title: Improvements in or relating to electric frequency changing systems such as are employed in superheterodyne radio receivers
IPC: H03D7/22
Filed: 1942-05-18
Abstract: 561,459. Discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd, May 18, 1942, No. 6702. Convention date, May 17, 1941. [Classes 39 (i) and 40 (v)] In a mixing circuit the transconductance of an electron discharge device for one of the frequencies to be mixed is successively reversed in sign by the operation of the other frequency ; as the first frequency is thus effectively reversed in phase at each successive half-cycle of the second frequency, both halves contribute to the intermediate frequency component, and the conversion efficiency is double that of the usual multiplicative mixer in which one half-cycle is effectively switched off. The effect is obtained by working on an output current-control voltage characteristic with portions of positive and negative transconductance separated by a maximum or a minimum ; to reduce standing current and resulting noise it is preferable to work at a minimum. In one form, a thermionic valve has three grids between the control grid G1, Fig. 5, and the anode P. The middle grid G3 is negative and, in conjunction with the positive outer grids G2, G4, produces a virtual cathode at sufficiently high values of cathode current ; under such conditions the control grid-anode current characteristic has a negative slope. In a modified form the local oscillator voltage may be applied to G3, the potential of which will under suitable conditions alter the sign of the transconductance of grid G1 as shown about the point A in Fig. 8. In the preferred form, a cathode-ray tube with deflection control comprises a strip cathode 33, Fig. 17, supported by wire 35 in an aperture in plate 34, an accelerating anode 37 divided into two compartments by partitions 38, 39, 40, a pair of deflecting plates 43, 44 in the second compartment, and an output anode 42. The ribbon electron beam after passing through aligned slots is deflected by plates 43, 44 over the aperture 41 and the resulting anode currentdeflecting voltage curve has a single maximum. The anode 42 is in the form of a ring for ease in degassing by high-frequency currents, and may be made secondary emissive to increase the output current. Both frequencies may be applied across the same plates as shown, or one may be applied to each plate. If it is desired to work on a minimum, a wire R, Fig. 12a, may be inserted in the aperture. In this example, separate deflecting plates D3, D4 are provided in the first compartment. Such multiple apertures give characteristics in which the transconductance changes sign a number of times and may be used in cases where it is desired to use a harmonic of the oscillator frequency to beat with a very high signal frequency, the number of changes of sign being equal to the order of the harmonic which it is desired to emphasize.
Patent GB-124313-A (GB)
Title: Improvements in Machines or Apparatus for Cleaning and Grading Seeds.
Inventor: HAUGHTON SAMUEL GILLMOR
IPC: B07B13/00
Filed: 1918-04-20
Abstract: 124,313. Haughton, S. G. April 20, 1918. Density separators; driving.-A machine for cleaning and grading seeds comprises a tray a to which is imparted a rotary and a rocking motion. The tray is supported on chains h and is moved by means of an adjustable crank b on the shaft c and a ball joint f. The lighter particles are discharged from a funnel and pipe arranged above the centre of the tray. The tray a is provided with a false bottom having one or more openings, which may be adjustable, through which the heavier seeds pass to the pipe m.
Patent GB-761055-A (GB)
Title: Improvements in methods and apparatus for detecting and measuring the concentration of gases
IPC: G01N27/16
Filed: 1953-03-25
Abstract: <PICT:0761055/III/1> A method for detecting or measuring oxygen or hydrogen in a gas or gas mixture comprising the other of said gases, comprises flowing the gas to be tested over a palladium catalyst and observing or measuring the difference in temperature between the catalyst and the gas flowing towards it.  The method is performed in an apparatus which comprises two temperature sensitive elements, means to pass the gas in succession thereover, a palladium catalyst in direct contact with or in direct contact with a solid support which is in turn in direct contact with the second element, and means for detecting or measuring any difference in temperature of said elements.  One of the above said gases may if necessary be added for the purposes of the test.  In one embodiment, the two elements are mounted in separate thermally insulated chambers connected by a passage, this assembly being enclosed in a common insullated chamber. As shown, the temperature sensitive elements 5, 6 are situated within a chamber 1, thermally insulated by a jacket 2, into which the gas mixture enters at 3 and leaves at 4.  The elements consist of thermisters comprising a small bead 7 of a coupled metal oxide compound which is secured to copper disc 8, and having lead-in wires 10 by which they are connected to the conjugate arms of a bridge circuit.  The catalyst 11 consists of a disc of sintered glass supporting palladium, incorporated therein by saturating it with palladium chloride solution and heating it to 600 DEG C., said disc being secured by means of a cold setting resin loaded with metallic powder.  Alternative temperaturesensitive devices are (a) a thermister device having a local coating of glass on which the palladium is deposited, and (b) a platinum resistance wire element wound on to a palladium-impregnated sintered glass tube through which the gases pass.
Patent GB-903267-A (GB)
Title: Improvements in or relating to stacking trucks
IPC: B66F9/14
Filed: 1960-02-26
Abstract: 903,267. Fork lift trucks. JUNGHEINRICH, F. Feb. 26, 1960 [April 6, 1959], No. 6756/60. Class 78 (3). A fork lift truck comprises a mast 2 movable on the truck chassis 4 in the longitudinal direction of the truck, a lifting slide movable vertically on the mast, lifting forks 1 connected to the lifting slide and movable in the longitudinal direction by scissors levers 3 and movable in the longitudinal direction. The forks 1 may be displaced a short distance transversely of the longitudinal axis of the truck so as to facilitate alignment with a load. This is effected by mounting the levers 3 so as to slide along transverse rails on the lifting slide. All the various movements are controlled from the driver's seat and are effected through hydraulic, electrical or mechanical means.
Patent GB-861651-A (GB)
Title: Improvements in and relating to interchangeable objectives for photographic cameras
IPC: G03B7/00
Filed: 1958-03-03
Abstract: 861,651. Interchangeable photographic objectives with coupled diaphragm and shutter speed settings. AGFA A.G. March 3, 1958 [March 26, 1957], No. 6773/58. Class 98(1) An interchangeable objective for a photographic camera has a coupling device between diaphragm setting means on the objective and shutter speed setting means on the camera body, the coupling device comprising a member arranged outside the objective and provided with a telescopic connection to allow relative axial focusing movement between the objective and the camera body. As shown, a coupling member 8 is fixed to the diaphragm operating ring 5 and is provided with a pin-and-slot telescoping connection at 10 and is releasably coupled by the end 11a of a spring 11 to a toothed ring on the inside of the shutter speed setting ring 7 so that by disengaging the spring 11 from ring 7 the objective may be freely removed or reinserted.
Patent GB-197116-A (GB)
Title: Improvements in apparatus for ploughing, or forming, furrows, or trenches, in rows in proximity to each other
IPC: A01B13/00
Filed: 1922-03-08
Abstract: 197,116. Dijk, H. N. van, and Mc- Laren, H. March 8, 1922. Multiple-tool and disc-tool implements; lifting- devices, power.-Ploughs, trench-formers, and like impllements comprise side wheels 1, 1<a> mounted on cranks 2, 2a on separate parallel axles 3, 3<a>, a ratchet-toothed sector 4, 4a keyed on each axle, a catch-lever 10, 10<a> and an adjustable stop 11, 11<a> to engage each sector, and chains or ropes 5, 5a for coupling the sectors to opposite ends of a quadrantal part 6 of a Y-lever 7 or its equivalent to which the hauling chains or ropes 8, 8a are connected. Fig. 3 shows the positions of the cranks &c. while the implement is at work with the wheel 1 in the furrow. The tooth 9 of the sector 4 rests on the catch-lever 10 and the end of the sector 4a rests against the stop 11<a> which is carried by swinging levers 12a and adjusted by means of a screw 13a. At the headland, the wheel 1 runs out of the trench and the pull on the rope 8<a> turns the lever 7 and the axle 3<a> until the sector 4a engages a fixed stop 14<a>. The plough having thus been raised, the continued pull on the rope 8a turns the implement round, when the sector 4<a> leaves the stop 14<a> and engages the catch lever 10<a>, and the catch lever 10 is moved to allow the sector 4 to engage the adjustable stop 11 so that the wheet 1<a> may now act as furrow wheel and the wheel 1 as land wheel. Specification 197,117 is referred to.
Patent GB-867569-A (GB)
Title: Flange assembly on laminated pipe of polytetrafluoroethylene and thermosetting resin
IPC: F16L23/024
Filed: 1960-02-26
Abstract: 867,569. Moulding pipe ends. RESISTOFLEX CORPORATION. Feb. 26, 1960 [March 9, 1959], No. 6885/60. Class 87(2). A method of flanging a laminated pipe consisting of a layer of cured thermosetting resin and an inner layer of polytetrafluoroethylene comprises beating the end of the pipe until the thermosetting resin begins to break down and deteriorate, outwardly flaring the end of the pipe to mould the layer of p.t.f.e. and reconstituting the thermosetting layer of the flared portion with a compatible resinous cement. The laminated pipe, a flange 16 and a back-up ring 22 are placed in a moulding tool having a heated member 50 and a split collar 18, 20, the collar 18, 20 is tightened to grip the pipe and the member 50 is advanced until it contacts the pipe and its heat begins to break down the outer layer of the pipe. Additional external heating may be applied. The member 50 is then further advanced to flair the pipe and mould it against the ring 22 and the member 50 and pipe are allowed to cool to mould the p.t.f.a. layer. A layer of resinous cement is then applied to the cracked outer layer and the pipe is clamped between the flange 16 and a flange 66 to set the cement and unite the pipe to the ring 22. Specification 840,602 is referred to.
Patent GB-122565-A (GB)
Title: Improved Box or Holder for Shaving Sticks or the like.
Inventor: HOPKINSON HARRY
IPC: A45D40/12
Filed: 1918-04-25
Abstract: 122,565. Hopkinson, H. April 25, 1918. Contents, delivering.-The lower end of a stick of shaving- soap, grease paint, &c., is secured in a socket - piece C arranged to slide in a box or holder a having a vertical slot h in one side and holes or depressions i in the opposite side. The socket-piece c is pressed up-wards by a spring k bearing against a member e carrying a spring- pressed bolt f. The member e may be secured at different heights in the box by causing the bolt f to engage with the holes i and with recesses j formed at one side of the slot h.
Patent GB-852207-A (GB)
Title: Improvements in and relating to electrical protective relays using double rectifier bridge comparators
Inventor: ANTOSZEWSKI EUGENIUSZ
IPC: H02H3/40
Filed: 1958-03-04
Abstract: 852,207. Protective cut-out arrangements. ENGLISH ELECTRIC CO. Ltd. March 2, 1959 [March 4, 1958], No. 6993/58. Class 38 (5). [Also in Group XXXV] In a protective relay arrangement, e.g. a distance relay having a mho characteristic, using a double rectifier bridge comparator having two full-wave rectifier bridges with opposed parallel-connected outputs, the halfwave rectifier elements forming one bridge are of a different type from the rectifier elements forming the other bridge so that a modified relay characteristic results. In Fig. 1, the bridge A producing the operating signal comprises rectifier elements having a low forward characteristic and the bridge B producing the restraining signal comprises rectifier elements having a relatively high forward characteristic. Thus the elements of bridge A may be of germanium or copper oxide and the elements of bridge B may be of selenium or silicon. Alternatively or additionally the elements of bridge B may have a larger number of plates or cells than those of bridge A.