baber/WOPTO huggingface dataset:
Patent GB-471002-A (GB)
Title: Improvements in optical instruments
IPC: G01M11/02
Filed: 1936-05-29
Abstract: 471,002. Optical apparatus. WHITWELL, A., WHITWELL, L. E., and FINCHAM, E. F. May 29, 1936, No. 15153. [Classes 97 (i) and 98 (i)] An optical instrument is focused by dividing the field of view into two parts in such a manner that, when the instrument is not properly focused, one of the two parts appears blurred compared with the other and is also displaced relatively to the other, and when the instrument is properly focused both the relative blurring and the relative displacement vanish. The focusing means comprises a lens and a thick parallel plate of glass placed obliquely to the axis of the lens so that one of its non - refracting faces divides the field of view and the pupil of the observer's eye, thus enabling the observer to see part of the field of view through the lens alone and part through both lens and plate. Fig. 1 shows the elements of the invention, L being a lens having its focal plane at F and abc being a vertical linear object intersecting the axis of the lens and not lying in the focal plane. The thick parallel plate P is placed in the lower half of the field between the lens and the observer's eye E with its refracting faces inclined to the axis of the lens. Since the pencils emerging from the lens are not parallel the image seen by the observer consists of two lines one below the other and laterally displaced relatively to the other. If the object is moved into the focal plane, the rays emerging from the lens consist of parallel pencils and the image seen by the eye E is a continuous line. Fig. 5 shows the application of the invention to an ophthalmoscope, the plate P being positioned between the observer's eve E and the observed eye E<1> so as to split the field of view and the observer's pupil. If the observed eye is ametropic, e.g. hyperopic, the image of the fundus is formed at F.P. behind the retina and the observer sees the two halves of the field relatively displaced and one part blurred as above. described. The power of the lens L which has to be inserted in order to bring the two halves of the field into coincidence is then the error of the eye E<1>. Fig. 4 shows the application of the invention for focusing the objective of a camera, the lens L and plate P being fixed on the back of the camera in such a position that the focal plane of the lens coincides with the photographic sensitive surface when the latter is in position. The formation by the objective of an image in this plane is secured when the eye E sees the two parts of the image in coincidence as above described.
Patent GB-1423738-A (GB)
Title: Method and apparatus for preparing the ends of cables for splicing
IPC: H02G1/12
Filed: 1973-03-29
Abstract: 1423738 Shearing USS ENGS & CONSULTANTS Inc 29 March 1973 [12 April 1972] 15205/73 Heading B3W [Also in Division H2] Apparatus, Fig. 1, for preparing the end of a multiconductor cable C, Fig. 6, for splicing, by stripping off a portion of the jacket J and any insulated conductors P/S or bare conductors G to different lengths, comprises a step cutter 4, Fig. 1, mounted in a fixed housing 31, Fig. 3, and having a pair of opposed notching blades (64, Fig. 4, not shown) for cutting only the jacket and pairs of opposed cutting blades, e.g. 68, Fig. 3, spaced on one side of the notching blades in longitudinal succession, each pair for cutting one conductor to the required length. Blades of opposite sets, each set comprising one blade of each pair, are simultaneously movable together by driving means. A stripper 6 having cable gripping means 102, 111, Fig. 10, on the other side of the notching blades, is movable along a slidable mounting 92 when the blades are closed together, to withdraw the cable C from the severed end of its jacket J. Preferably the opposite sets of blades are mounted in upper and lower blade supports 40, 42 forming a die block 38, the upper support 42 being fixed and the lower support 40 being upwardly movable by an hydraulic drive 32, 34, 36. A cable support 44 arranged between the blade supports 40, 42 has a longitudinal guide opening 62 adjacent each pair of opposed blades. The bottom blade support 40 and the cable support 44 are guided by rods 46 and upwardly driven against the resistance of pairs of springs 58, 60 surrounding the rods 46. The stripper 6 has a gripping jaw 102 mounted on a longitudinally slidable block 94 and an opposite gripping jaw 111 mounted on a cover 108 pivoted on the block 94 and releasably locked by a toggle mechanism 114. An hydraulic drive 83, 88, 90 coupled to the block by a pull rod 96 provides power to pull the block 94 with the gripped cable C away from the cutter 4 after the opposed sets of blades have been brought together by the hydraulic drive 32, 34, 36.
Patent GB-115370-A (GB)
Title: Improvements in and connected with Glass-ware for Illuminating purposes.
IPC: F21V5/00
Filed: 1917-10-20
Abstract: 115,370. Holophane, Ltd., (Holophane Glass Co.). Oct. 20, 1917. Reflectors.-A prismatic glass reflector comprises an inner member 1 and an outer member 3 secured together by a screw-threaded metal ring 5 engaging a screw-thread 2 on the neck of the inner member. In one form, the outer member rests upon a ledge or shoulder 4, Fig. 1, on the inner member, and is held in position by the metal ring 5 engaging its upper end. A packing- ring 7 of india-rubber, asbestos, &c. may be placed between the metal ring 5 and the neck of the outer member, or between the necks of the inner and outer members. The ring may be formed with a lip for engaging a holder. In a second form, the ring 5, Fig. 2, in addition to screwing on the neck of the inner member, is formed with an enlarged internally screwed part for engaging a screw-thread 9 on the neck of the outer member 3, and is provided with an upwardly flared part 8. The two members 1. 3 are separated at their lower edges.
Patent GB-596338-A (GB)
Title: Shoe construction
IPC: A43B9/06
Filed: 1945-06-15
Abstract: 596,338. Boots and shoes. MANAHAN, T. M, June 15, 1945, No. 15274. Convention date, June 7, 1944. [Class 17 (ii)] A sock lining 1 larger than that required for a shoe of the size concerned has secured to it by separate seams 6, 8 and inwards of its edge the lower edge 5 of an upper 4 and a welt strip 7 forwards of slits 3 positioned at the heel breast face location. A last is then inserted and the projecting edge of the sock lining 1 is pulled over and cemented to a bottom filler secured to the underside of the lining 1, to. bring the welt 7 into position for attachment of an outer sole, and heel.
Patent GB-405512-A (GB)
Title: Improvements in crinkled materials and methods and apparatus for making the same
IPC: B29C37/00
Filed: 1933-05-27
Abstract: 405,512. Crinkling sheet material. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.- (Assignee of Galligan, J. J.; and Robinson, W. J.; Providence, Rhode Island, U.S.A.) May 27, 1933, No. 15399. Convention date, May 28, 1932. [Class 141.] Elastic sheet material is manufactured in crinkled form by passing the plain unstretched sheet through rollers while it is superposed upon a stretched resilient backing sheet, utilising the rollers to attach the plain sheet temporarily to the backing sheet at a number of spaced points, and then releasing the tension in the backing sheet to cause the top sheet to crinkle between the points of attachment. Vulcanising or other setting treatment then stabilises the wrinkled formation so that the backing can be removed. In the application of the process to the crinkling of rubber for the manufacture of bathing caps, belts, purses, and the like, the backing material passes from a storage reel 2 braked by the hanging weight 21, between a pair of plain rollers 3, 4 of which the latter is driven by chain 27 driven in turn through change-speed gear from a motor 40. Afterwards, it is stretched by being passed through a pair of faster-driven search rollers 5, 6 and also spread by a reversely-driven roller 61 cut with opposite threads at its ends so that it tends to stretch the material laterally and remove wrinkles. Prior to entering the bite of the rollers 5, 6 one or more layers 8 of unvulcanised rubber passing over stationary spreader bars 84 from storage reels, are superposed on it. The lower roller 6 is driven through a separate change-speed gear from the motor so that its speed can be regulated independently of the roller 4. The upper roller 5 is provided with ridges 7, Fig. 8, or with both longitudinal and transverse ridges forming cells 79, Fig. 9, for securing the sheet to the backing and the combined sheets then pass to a storage reel 9 driven at the same speed as the roller 4 so that the tension imposed by the greater speed of the rollers 5, 6 is completely relaxed before winding. The rolled-up material is partly cured, stripped from the backing, and then cut up into articles, which are then completely cured. The process can be carried out with synthetic rubber of the kind described in U.S.A. Specification 1,829,502.
Patent GB-440407-A (GB)
Title: Improvements in and relating to vacuum-tight joints
IPC: H01J5/42
Filed: 1934-05-24
Abstract: 440,407. Assembling force fits ; jointing ; vacuum discharge apparatus. AKT.-GES. BROWN, BOVERI, & CIE, Baden, Switzerland. May 24, 1934, No. 15513. Convention date, May 24, 1933. [Class 83 (iv)] [See also Group XL] A slightly undersize thin-walled cylindrical metal part is forced mechanically on to a ceramic insulator, to produce a connection tight to high vacuum. Anodes 1, Fig. 1, of a rectifier are secured in apertures of a cooled plate 13, and are insulated therefrom by an insulator 8 supported from the plate by a flanged member 11. The joint between the members 11, 13 comprises asbestos packing 17 and mercury 16. The control grid 19 is supported on a cylindrical member 12. A cap 3 on the insulator supports a cooling radiator 15 and a bolt 2 for the anode 1. To produce vacuum-tight connections, the insulator 8 and the members 3, 11, 12 are assembled as force fits, and the insulator 9 for the grid lead is similarly secured to the metallic members 7, 10. Such a joint is also effected in the case of a hot cathode tube between the insulator 8<a>, Fig. 2, and the anode 1 and cap 3. The contacting surfaces may be previously ground. The anode 1 is closed by a welded on cover 26, the internal surface of which, and also that of the cap 3, are polished or plated with nickel or chromium to reflect heat radiated from the cathode 20. Current is fed to the cathode through leads 21, 22. Gaps 6 on the external side receive a sealing medium, and on the inner side serve to increase the insulation creeping path. The sealing medium may serve as a lubricant during the pressing operation. The gaps 6 may be partially closed to provide an annular recess for the reception of mercury, and a refilling tube, serving as a gauge, and an exhaust pipe, may be provided. According to the Specification as open to inspection under Sect. 91, the vacuum-tight connections may also be produced by shrinking, hot or cold drawing on, or hot pressing. This subject-matter does not appear in the Specification as accepted.
Patent GB-317903-A (GB)
Title: Improvements in line drawing or ruling appliances
IPC: B43L7/00
Filed: 1928-05-26
Abstract: 317,903. Shepherd, J. L. May 26, 1928. Protractors; levels.-An instrument primarily for drawing lines at any desired angle comprises a straight-edge &c. a on one edge of which is formed a semi-circular protractor &c., at the centre of which is pivoted a pendulous pointer g to swing over the protractor graduations. The edge a<1> of the straight-edge may be graduated.
Patent GB-539889-A (GB)
Title: Improvements in mechanically operated contactor switches
IPC: H01H9/02
Filed: 1940-10-23
Abstract: 539,889. Press-button switches; snap-action switches ; motor controllers. MORRIS, Ltd., H., and FREEMAN, W. Oct. 23, 1940, No. 15595. [Classes 38 (iii) and 38 (v)] A reversing switch of the pendent type suitable for controlling motors comprises a two piece casing, one piece 4 forming a handle carrying oppositely-disposed push buttons 8, 8a each controlling a snap action switch mounted on a block disposed in the other portion 5 of the casing. A common spring 20 returns the push buttons which act on levers 9, 9a controlling levers 14, 14a connected by dead-centre springs to contact arms 15, 15a. Depression of one button prevents depression of the other button sufficiently to operate its switch and a pin 21 also positively prevents simultaneous closure of the two switches.
Patent GB-144680-A (GB)
Title: Improvements in carburetors
IPC: F02M17/14
Filed: 1920-06-09
Abstract: 144,680. Booty, P. C. P. Jan. 11, 1918, [Convention date]. Spray carburettors.-A suction-actuated member controls, in a uniform ratio, the air and fuel supplies, and manually adjustable means controllable from a distance are provided to vary such ratio. Air enters at 11, fuel through an orifice 20 in the nozzle 17, and mixture leaves at 12. A suction-actuated piston 36 in an enlargement 14 of the carburettor passage carries loosely from a spider 42 a grooved needle valve 38 and has a depending tubular portion 35 which carries at its lower end an annular piston 37 which serves', in conjunction with an adjustable conical part 34 on the nozzle, to vary the air supply. The pistons 36, 37 are a fairly clooe fit in their casings and the piston 37 is perforated at 46 to prevent fluttering. The fuel valve groove 39 increases in depth downwardly, and at the lower end of the valve is a perforated piston which serves to augment the fuel supply during rapid acceleration. To obtain a rich mixture at starting and to vary the proportion of air to fuel during normal running the cone 34 may be raised manually through a lever 47. Fuel is supplied to the float chamber through a column 23 and is controlled by a valve 25 supported on the float 22. In a modification, the piston 36, in order to prevent leakage past its edge, is provided with a light bellows diaphragm.
Patent GB-439413-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/34
Filed: 1935-05-29
Abstract: 439,413. Vacuum cleaners. HOOVER, Ltd., Perivale, Middlesex. (Assignees of Smellie, D. G. ; 357, 23rd Street, N.W., Canton, Ohio, U.S.A.) May 29, 1935, No. 15628. Convention date, June 25, 1934. [Class 8 (i)] A suction cleaner is provided with a carpet agitator mounted to rock upon a horizontal axis under the influence of a member eccentrically carried by a rotary member on a vertical axis. The carpet agitator comprises a U- shaped member having rolled edges 16 which is mounted upon a spindle at either end in a casing 18 which is pivotally supported in the main cleaner casing. This beater is coupled through a pin 52 with a pin 49, the head of which is embedded in a rubber block 43 contained within a casing 40 having an upstanding spigot 41. This latter is eccentric with respect to the spindle 31 which is suitably supported in the forward part of the cleaner and which has a pulley section to take a driving belt 37 which passes also around an extension of the fan spindle. In this construction the pulley is provided with upstanding flanges 34 in a casing with outer rims 35 for protecting the mechanism from dirt. In a modification the pin 56 instead of being embedded in rubber only may rest against a flexible metal membrane embedded in the rubber and instead of having two beater rims 16, on one side may be mounted a brush member 16<a>.
Patent GB-768702-A (GB)
Title: Improvements in or relating to a process for the manufacture of electrical condensers
IPC: H01G13/00
Filed: 1954-05-27
Abstract: 768,702. Capacitors. SIEMENS & HALSKE AKT.-GES. May 27, 1954 [May 27, 1953], No. 15643/54. Class 37. In the manufacture of an electric capacitor by rolling together two metal-foil electrodes interleaved with strips of a synthetic thermoplastic resin, an outer casing for the capacitor is formed by winding at least one additional turn of the plastic strips around the capacitor body and then fusing them to the body and simultaneously severing them by the application of heat and pressure. In the arrangement shown, the capacitor comprises polystyrene strips 2, 3 which are wound on to the capacitor from supply reels (not shown), the strips being severed and simultaneously fused to the capacitor body by the rotation of the handle 5 in an anticlockwise direction, the portion 4 effecting the severing and fusing operation being electrically heated by the coil 9. The portion 4 may contain one or more resilient inserts to enable it to conform to the shape of the capacitor body. Preferably the dielectric strips comprise stretched polystyrene, heat treatment being applied to the capacitor after its winding in order to cause the dielectric windings to shrink and fuse together. It is also stated that the invention may be applied to other forms of capacitor, e.g. plate capacitors, the capacitor body being encased in one or more turns of the synthetic thermoplastic material.
Patent GB-701013-A (GB)
Title: Improvements in or relating to modified organosilicon resins
IPC: C08G77/38
Filed: 1951-07-02
Abstract: A resinous composition consists essentially of (1) the reaction product of 65 to 80 per cent. by weight of a resinous material having the composition 65 to 75 mol. per cent. of an alkoxyphenylmethylsiloxane and 35 to 25 mol. per cent. of an alkoxy - monophenylsiloxane. 10 to 17.5 per cent. of glycerine, and 10 to 17.5 per cent. of phthalic anhydride, and (2) a butylated melamine-formaldehyde resin in amount to give 85 to 97.5 per cent. of (1) and 2.5 to 15 per cent. of (2).  Component (1) may be made according to Specification 691,014.  The compositions may be made by dissolving the resins in solvents, e.g. xylene, toluene, ketones and ethers, a mixture of xylene and butanol being preferred for the melamine resin, mixing the solutions and removing the solvent. Examples are given.  The compositions are used as high temperature electrical varnishes.  Specification 633,599 also is referred to.
Patent GB-996322-A (GB)
Title: Simultaneous recovery of pure ammonium sulphate and pure lactams from rearrangement mixtures of alicyclic ketoximes
Inventor: NIESWANDT WERNER
IPC: C01C1/242
Filed: 1962-04-25
Abstract: A process for continuously recovering pure ammonium sulphate in the preparation of lactams (see Division C2) by Beckmann rearrangement of a cycloalkanone oxime having 6 to 10 ring carbon atoms with 98 to 100% wt. sulphuric acid or oleum containing up to 35% wt. of free sulphur trioxide, which reaction mixture contains 30 to 50% wt. lactam, followed by neutralizing said reaction mixture by contact with ammonia in the presence of 5 to 50 times the amount (with reference to the weight of reaction mixture) of 25 to 45% wt. ammonium sulphate solution, comprises separating the resulting lactam and ammonium sulphate phases, evaporating the ammonium sulphate phase until ammonium sulphate has been precipitated in an amount corresponding to the sulphuric acid in the rearrangement mixture, diluting the mother liquor with such an amount of water as is necessary to restore the ammonium sulphate solution to its original concentration, and returning the diluted mother liquor to the neutralization zone.  Concentration of the ammonium sulphate fraction may be effected by evaporation under reduced pressure.  Preferably 5 to 50 times the weight of mother liquor (with reference to the weight of rearrangement mixture) is returned to the neutralization zone.ALSO:A process for the recovery of pure lactams and pure ammonium sulphate from reaction mixtures obtained by Beckmann re-arrangement of a cycloalkanone oxime having 6 to 10 ring carbon atoms with 98 to 100% wt. sulphuric acid or oleum containing up to 35% wt. of free sulphur trioxide, which reaction mixture contains 30 to 50% wt. of lactam, comprises neutralizing said reaction mixtures by contact with ammonia in the presence of 5 to 50 times the amount (with reference to the weight of the reaction mixture) of 25 to 45% wt. ammonium sulphate solution, separating the resulting lactam and ammonium sulphate phases, evaporating the ammonium sulphate phase until ammonium sulphate has been precipitated in an amount corresponding to the sulphuric acid in the re-arrangement mixture, diluting the mother liquor with such an amount of water as is necessary to restore the ammonium sulphate solution to its original concentration, returning the diluted mother liquor to the neutralization zone, extracting the lactam phase with at least three times its weight of benzene, toluene or xylene, and distilling to obtain the lactam.  Preferably 5 to 50 times the amount of mother liquor (with reference to the weight of re-arrangement mixture) is returned to the neutralization zone.  Concentration of the ammonium sulphate solution may be effected by evaporation under reduced pressure.  The lactam may be extracted by a countercurrent extraction in a one-stage or multi-stage process.  In specific examples caprolactam and caprylolactam are produced from cyclohexanone oxine and cyclooctanone oxine respectively.
Patent GB-308924-A (GB)
Title: Improvements in and relating to reinforced concrete structures
IPC: E04C5/065
Filed: 1928-05-29
Abstract: 308,924. Ritchie, H. C., and Structural Steelcrete, Ltd. May 29, 1928. Ad'dition to 238,837. Reinforced concrete; beams.-The reinforcement described in the parent Specification is modified as regards the stirrups. In Fig. 1, the stirrups d project through both flanges, the lower ends are bent around the bars and again through the lower flange, and project down into the concrete; a washer c may be provided. The upper ends of the stirrups are passed through the top flange and hooked over the edge, or they may be merely bent completely over the flange. In Figs. 2 and 3, the stirrups are passed around the lower flange and bars f, g, the upper ends being hooked in holes in the top flange or web. Additional ordinary stirrups are used with the, form shown in Fig. 3 near the centre of the span. Extra bars h, i, Fig. 6, may be secured to the others by saddles or stirrups.
Patent GB-1162328-A (GB)
Title: Process for Recovering Mercury from an Inactive Mercuric Chloride/Active Carbon-Catalyst
IPC: C22B43/00
Filed: 1968-04-02
Abstract: 1,162,328. Recovery of mercury chlorides from catalysts. KNAPSACK A.G. 2 April, 1968 [4 April, 1967], No. 15742/68. Heading C1A. [Also in Division C7] In the recovery of Hg from a contaminated inactive HgCl 2 / active C catalyst by burning the C with a deficiency of O 2  or air so as to produce predominantly CO, a mixture consisting of gaseous Hg, HgCl 2  and Hg 2 Cl 2  is expelled or sublimed off (together with combustion gases), the mixture is condensed, and the HgCl 2  and Hg 2 Cl 2  in the condensate are reduced to Hg by addition of a reducing agent such as hydrazine sulphate, ferrous sulphate or formaldehyde. As shown, inactive catalyst 9 is burnt in shaft furnace 3. The products leave the furnace through line 10 and are cooled in tube condenser 11. Condensate and combustion gases pass through line 13 to scrubbing tower 14 which is supplied with reducing solution 15. Hg is withdrawn at 17, while combustion gases, after scrubbing out of mercury chloride contaminants and reduction thereof, leave through line 16 and are burnt. The reducing solution is recycled by pump 19 through line 18, fresh solution being introduced when necessary through line 21.