baber/WOPTO huggingface dataset:
Patent GB-470401-A (GB)
Title: Improvements in means for controlling automatically a variable condition
IPC: G05D23/275
Filed: 1936-02-10
Abstract: 470,401. Automatic control systems. KENT, Ltd., G., IVANOFF, A., and HOWARD, G. P. E. Feb. 10, 1936, No. 4035. [Class 38 (iv)] Temperature &c. -A valve 5 is actuated in order to control a variable condition such as the temperature of a furnace 2, by a reversible electric motor and a contact 9, on an arm 8 co-operating with two contacts 11, 12, on an arm 13. The arm 8 is positioned in accordance with the state of the variable condition, such as the furnace temperature by means of a connection from a device 1 responsive to the condition. The arm 13 is moved by two devices to which it is differentially connected, one of which is moved in accordance with changes in the setting of the valve 5 and the other at a speed depending on the extent of departure of the variable condition from the desired value. The first movement is produced by a Selsyn connection 16, 18, from the valve or its motor 15 to a cam 20, actuating an arm 21 coupled to one end of a link 24. The second movement is produced as follows. The arm 8 carries a pin (not shown), lying between two spring- controlled arms 36, 37, which close upon it, while a cam 32 is permitting a spring brake to hold it ; the arms are opened at regular intervals by a cam 38. A three armed rocker 40, has a pin 39 lying between these arms so that when they close its position is determined by the position of the other pin. The rocker arms 41, 42 have upturned ends containing rollers adapted to clutch them to a disc 44 on their upward movement. The speed of movement of the disc 44 and its direction thus depends on the extent and sense of the departure of the variable condition from the desired value. The motion of the disc is communicated through gears and a link 25 to the other end of link 24, and the arm 13 is connected to an intermediate point in this link.
Patent GB-490293-A (GB)
Title: Improvements in or relating to sound heads and amplifier apparatus for use in connection with sound films
Filed: 1937-02-11
Abstract: 490,293. Optical sound reproducing apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BANKS, G. B. Feb. 11, 1937, No. 4130. [Class 40 (ii)] Relates to a sound-head apparatus for use in connection with sound film comprising within a housing an optical system for providing varying light corresponding to sound recorded on a film passed through said housing and for focusing said varying light on a photo-electric cell within said housing. According to the invention, the sound head is adapted to accommodate within said housing, in place of the photo-electric cell, a reflector and is also adapted to accommodate in the orifice provided for the accommodation of the photo-electric cell carrier tube a readily attachable unitary extension member including an electron multiplier and a co-operating optical system, the reflector within the housing being so positioned and the electron multiplier and optical system within said extension being likewise so positioned that light is reflected by said reflector into the unitary extension member to fall on the cathode of the electron multiplier, the whole arrangement being such that ready conversion of a usual sound head from photo-electric and amplifier operation to electron multiplier operation may be effected. As shown, the sound head comprises the usual main housing 11 enclosing an electric lamp 1, an image of the filament of which is projected by the lens system 2 on to the sound track portion 3 of a film 4. Located behind the film is a further lens system 12 which projects an image of the sound track on to a narrow slit in a diaphragm member 5. In place of the usual photo-electric cell behind the member 5, there is provided a prism 6 which reflects the light through a right-angle out through the normally provided wall aperture for receiving the normal cell tube. Into this aperture is inserted one end 14 of a tubular extension member 13 which contains a collimating lens 7, a second right-angled prism 8 and a lens 9 which brings the light to a focus on the photo-electrode cathode of an electron multiplier disposed in the housing 10. The focal length of the lens 7 is preferably equal to its optical distance from the lens 12. According to a modification, the prism 8 is dispensed with and the lens 9 and housing 10 are arranged to be coaxial with the member 13. A further modification is also described, Fig. 2 (not shown), in which a common electron multiplier is employed for two associated sound heads. If desired, a lens system may be arranged to collimate the light immediately after it has passed the member 5 and the lens 9 may be cylindrical or partially cylindrical so as to give a " line " image instead of a " spot " image on the cathode of the electron multiplier.
Patent GB-548252-A (GB)
Title: Improvements in or relating to high aperture objectives
IPC: G02B9/34
Filed: 1941-03-27
Abstract: 548,252. Lenses. KODAK, Ltd. (Eastman Kodak Co.). March 27, 1941, No. 4154. [Class 97 (i)] In a photographic objective having focal length F and consisting of two outer positive components and two inner meniscus components highly concave to a diaphragm between them, the front component is a doublet including a positive front element I cemented to an element II having a refractive index at least 0.05 less than that of the element I, the radius R 2  of the cemented surface, if negative, being numerically greater than 1.5 F, and, if positive, greater than F. Preferably R 2  equals infinity, the radius R, of the front surface is between 0.4 F and F, and the radius R 3  of the rear surface is greater than F and less than 5 F. The element II may be negative and have a dispersive index at least 5 less than that of the element I, or it may be positive, the radii being then, respectively, R, between 0.5 F and 0.7 F, R 2  between 0.75 F and R 3 , and R 3  being greater than F. Limits for the radii of the other lens surfaces, and complete data for two examples are set out in the Specification. Specifications 548,251, 548,253, 548,254, 548,255 and 548,256 are referred to.
Patent GB-238473-A (GB)
Title: Improvements in unidirectional power transmission mechanism
IPC: B06B3/00
Filed: 1924-02-18
Abstract: 238,473. Schieferstein, H. Feb. 18, 1924. Addition to 211,110. Variable-speed ratchet gearing; differential or balance gearing.-Consists in tuning the energy accumulating oscillating system " of the parent Specification to the normal periodicity or speed of the driving mechanism by altering the inertia of the mass component or the elasticity of the elastic component of the system and also includes constructional arrangements wherein the elastic component of the oscillatory system is arranged partly or wholly outside the actual transmission train involving in some cases the use of loose couplings as described in Specifications 188,633 and 237,934, [both in Class 80 (iii), Link-work &c.]. Various constructional arrangements are described. In the form shown in Fig. 1, the oscillatory system comprises a lever or fly-wheel e carrying adjustable weights a and a spring b through which the drive is transmitted from the crank g, the lever being connected directly or through links to the hub of a free wheel or ratchet gear. The natural frequency of the device is attuned to the normal speed of the crank shaft by altering the position of the weights. Instead of the drive being transmitted through the spring as in Fig. 1, the constraining spring or springs may be partly or wholly outside the actual transmission system as shown in Figs. 3 and 5, in the latter case a loose or yielding coupling k being necessary to transmit the drive without interfering with the natural frequency of the oscillating system a, b. The loose coupling may comprise a spring as shown, or a " friction " or an " intermittent ' coupling as described in Specification 237,934, [Class 80 (iii), Link-work &c.], such couplings being adjustable. In further modifications, the oscillatory mass may be embodied in a frame surrounding the unidirectional driven mechanism and connected thereto by links or rack-and-pinion gearing. In another arrangement chain gearing is employed.
Patent GB-1514884-A (GB)
Title: Fastening device for a shaft
IPC: E04H12/22
Filed: 1976-02-03
Abstract: 1514884 Pedestal stands FERIEPRODUKTER AB 3 Feb 1976 [15 April 1975] 04225/76 Heading A4H [ Also in Division E2] A parasol shaft 1 is fastened to a base (2) by means of a fastening device (3) comprising a plastics bushing 4 rigidly fastened to the base (2) for receiving the shaft 1 and a plastics wedge 7 pressed into the bushing 4, the bushing 4 and the wedge 7 having respective grooves 6, 9 on surfaces 5, 8 for interengagement to hold the wedge 7 in its fastening position. The wedge 7 has a V-shaped contact surface 10 abutting the shaft (1) and a hole 11 for connecting the wedge 7 by means of a cord to the bushing 4.
Patent GB-718132-A (GB)
Title: Vitreous phosphate enamels and their use
IPC: C03C3/17
Filed: 1952-02-18
Abstract: 718,132. Vitreous enamel frits. DU PONT DE NEMOURS & CO, E.I. Feb. 18, 1952, [March 22, 1951.] No. 4289/52. Class 56. A vitreous enamel frit comprises, in mole percentages, P 2 O 5  20-50, Al 2 O 3  10-45, alkali metal oxide 20-50 of which at least half is Na 2 O and the balance K 2 O and/or Li 2 O, the K 2 O being 0-25 and Li 2 O 0-15, B 2 O 3  0-20, TiO 2  0-15, and ZrO 2  0-5, with or without ceramic pigment. Preferred mole per cent ranges are P 2 O 5  25-45, Al 2 O 3  15-40, alkali oxide 25-45, together totalling at least 60 per cent, B 2 O 3  0-10, TiO 2  3-6, and ZrO 2  0-3, the K 2 O being 5-15, and the Li 2 O 0-10. If the enamel is required to have a coefficient of expansion near that of aluminium, B 2 O 3  is omitted or does not exceed 3 mol per cent. Minor amounts of other ingredients may be present, but the SiO 2  content is not more than 2 per cent. The frits are used for the porcelain enamelling of aluminium and aluminium with alloys, e.g. at least 80 per cent Al and 1-20 per cent of ingredients such as Mn, Mg, Cu, Cr, Zn, Si. The ingredients are fired at about 480-540‹C. and fritted, and the frit dried at about 150‹C. or less, and ground with water or other desired liquid with the addition of up to about 10 per cent by weight of opacifying agents, e.g. TiO 2  or ceramic pigments, e.g. cobalt, aluminate blue. A small amount of phosphoric acid is advisably added. The firing temperature of the enamel is not above about 580‹C., and is 'preferably 500-560‹C. The alloys to be enamelled are preferably prepared by treating with an alkaline aqueous solution of a chromate and heating at 350-600‹C. Examples, showing the compositions in mole percentages, are:-(1) Na 2 O 40, Al 2 O 3  30, P 2 O 5  30 milled with 130 c.c. water and 2 c.c. of 85 per cent H 3 PO 4 , fired at 560‹C., (2) Na 2 O 29.1, K 2 O 9.7, Al 2 O 3  24.2, P 2 O 5  29.1, B 2 O 3  4.9, TiO 2  3.0, fritted, dried, milled, and fired at 520-540‹C., (3) Na 2 O 30.4, K 2 O 10.0, Al 2 O 3  21.8 P 2 O 5  34.8, TiO 2  3.0, fritted, &c., and fired at 540‹C., (4) 150 gm. of glass at (2) milled with 60 c.c. water, 1 c.c. of 85 per cent orthophosphoric acid, and 9.0 gm. of cobalt silicate blue pigment, fired at 520-540‹C., (5) Na 2 O 32, K 2 O 10, Al 2 O 3  24, P 2 O 5  24, TiO 2  3, B 2 O 3  5, ZrO 2  2, (6) Na 2 O 32.8, Li 2 O 10.0, Al 2 O 3  24.6, P 2 O 5  24.6, TiO 2  3.0, B 2 O 3  5.0. The batch compositions and results of firing these examples are given. Frits containing alkali oxide 35-45, Al 2 O 3  20-30, P 2 O 5  30-40, B 2 O 3  0-3 have coefficients of expansion near those of aluminium and alloys. Specification 642,228 is referred to.
Patent GB-122953-A (GB)
Title: Improvements in the Manufacture of Acetate of Lead and other Acetates.
Inventor: MORRIS EDGAR FORD
IPC: C07C51/41
Filed: 1918-03-12
Abstract: 122,953. Morris, E. F. March 12, 1918. Lead acetate is prepared by extracting aqueous solutions of acetic acid by organic solvents insoluble in water (e.g. benzene or toluene) and neutralizing the extract with a basic lead acetate solution; the solvent is separated from the neutralized solution and used again for extracting the acetic acid solution. The process may be applied to the dilute sodium acetate liquor resulting from the manufacture of chrome yellows from lead acetate; the sodium acetate liquor is acidified with sulphuric acid and extracted with benzene, which is repeatedly circulated between the acid solution and a solution of basic acetate of lead.
Patent GB-852308-A (GB)
Title: Resins comprising polyesters modified by dextran and a monoethylenically unsaturated monomer
Inventor: NOVAK LEO J
IPC: C08G63/676
Filed: 1959-02-07
Abstract: A composition which may be copolymerized comprises a dextran modified polyester, prepared by heating together 30-65% by weight of an unsaturated polycarboxylic acid or anhydride, from 15 to 50% of a polyhydric alcohol and from 5 to 25% of dextran; and an ethylenically unsaturated monomer copolymerizable with the polyester.  The polycarboxylic acid may be maleic, phthalic, chlorofumaric, citraconic, methylethyl maleic, diethyl maleic, chloromethylmaleic, or mesaconic; or the anhydrides of acids such as maleic, or phthalic. The polyhdric alcohol may be ethylene glycol, di-, tri-, or tetra-ethylene glycol, trimethylene glycol, glycerol, or pentaerythritol.  The dextran component may be obtained by biosynthesis from sucrose or by bacterial conversion of 1,4 linkages of dextrin to 1, 6 linkages of dextran.  The mono-ethylenical monomer may be styrene, divinylbenzene, methyl methacrylate, vinyl acetate, or diallylphthalate.  The manufacture of the polyester may be carried out in an atmosphere of an inert gas such as carbon dioxide or nitrogen to inhibit darkening of the product, A catalyst is not usually necessary but ozone, ozonides, barium peroxide, sodium peroxide, acetyl peroxide, lauryl peroxide, stearyl peroxide, benzoyl peroxide, p-chlorobenzoyl peroxide, acetyl benzoyl peroxide, acetone peroxide, triacetone peroxide, ethyl hydrogen peroxide, diethyl peroxide, perborates persulphates, perchlorates, or aluminium chloride may also be used.  Metallic powder may be added before it is applied as a coating.
Patent GB-964402-A (GB)
Title: Nut-panel assembly and method of making same
IPC: F16B37/06
Filed: 1963-02-04
Abstract: 964,402. Jointing by forging; perforating. MULTIFASTENER CORPORATION. Feb. 4, 1963 [March 14, 1962], No. 4426/63. Headings B3H and B3W. [Also in Division F2] In an assembly wherein a pierce nut 22 having a pilot portion 26 projecting through an aperture 23 in a sheet metal panel 21 and a laterallyprojecting shoulder 35 against which the panel is positioned, the end face 25 of the nut has an undercut groove 30 outwardly of the threaded aperture 23 the nut being secured to the panel by displacing into the nut groove only a portion of the panel overlying the groove which has been severed by the nut. The nut is used to punch the panel in co-operation with a die button 40, the nut being moved relatively to die button with the panel 21 interposed therebetween. The die button 40 has a central aperture 39 and a pair of elongated projections 45, each provided with a pair of longitudinally spaced sharpened shearing edges 46 which co-operated with piercing edges 28 of the nut pilot portion 26 to sequentially pierce the panel and then swage or othersise deform the panel into the nut groove 30. The die button has arcuate surfaces radiused respectively longitudinally and transversely of the panel so that only the spaced longitudinal portions 50 of the severed length are swaged in the grooves. The joining portions 51 are deflected to project through the mouths of the groove to join the severed portions 50 to the non-deformed portions of the plate. The parallel cutting edges 41 of the die button 40 punch through the panel at 42, Fig. 2, and displace the panel 21 downwardly relatively to the nut, displacing the nut material beneath the panel. In a modification, Figs. 6-11 (not shown), only a single medial portion of the panel is deflected into the nut groove following piercing. Specification 783,220 is referred to.
Patent GB-851081-A (GB)
Title: Improvements in or relating to soldering machines
IPC: B23K1/002
Filed: 1957-02-11
Abstract: 851,081. Soldering. SCHULER A.G., L. Feb. 11, 1957 [Feb. 11, 1956], No. 4664/57. Class 83 (4). In a soldering-machine with a mandrel for carrying a workpiece suspended thereon and having means to clamp the workpiece fast on the mandrel including a carrier and a pressurebar mounted for movement therein against the workpiece, an inductor supplied with medium or high-frequency current is mounted in a holder in the pressure bar or in the mandrel. In an embodiment the overlapped ends of a sheet-metal body 13 with band or wire solder 15 therebetween are clamped on a mandrel 12 by a pressure bar 3 mounted for vertical movement on a carrier 1. An insulated tubular copper conductor 9 forming the inductor is held in a laminated holder 7 in the replaceable bar 3. Current is supplied to the inductor by leads 10 connected to sliding contacts 11 or knife blade or roller contacts. The joint may be preheated by induction and the inductor may be held in a porcelain or synthetic plastic holder. The inductor may alternatively be similarly mounted in the mandrel and the temperature may be automatically adjusted by means dependent on the thickness of workpiece material and cam or time relay means may be provided to regulate the heating period. A number of mandrels forming a capstan may be provided, the capstan being rotated intermittently to different working positions.
Patent GB-428715-A (GB)
Title: Improvements in or relating to toilet-roll holders
IPC: A47K10/32
Filed: 1934-02-13
Abstract: 428,715. Toilet-roll holders. EYRE, E., The Woodlands, Walton, Chesterfield, Derbyshire. Feb. 13, 1934, No. 4718. [Class 18] A toilet-roll holder carries on a shelf or on a peg E', Fig. 4, or in an open or closed receptacle F, Fig. 5, a reserve roll of paper D<1>, which is not so conveniently available as the in - use roll D. A hinged cover may be provided for the shelf. The peg E<1> is so disposed that the spare roll, which may be protected by a cover, will not revolve easily, and the spare roll of Fig. 5 is not accessible until the roll D is removed. Members F, built into the wall, form the top and bottom of the receptacle, the brackets B extend backwards to form the side walls, and beadings A may be provided.
Patent GB-658875-A (GB)
Title: Improvements in cigarette lighters
IPC: F23Q2/08
Filed: 1949-02-21
Abstract: 658,875. Cigarette lighters. FLORMAN, I. Feb. 21, 1949, No. 4734. [Class 75(iii)] In a cigarette lighter the flint wheel 50 is properly disposed relative to the flint tube-20 by the flint wheel 50 being mounted between ears 12 formed on a plate 10 having holes 11, 18 and 16 to align with the flint tube 20, with a thumb piece plunger 28 and with the wick tube 34, the arrangement being such that depression of thumb 32 raises a snuffer cap 36 and rotates the flint wheel 50. The thumb piece 32 has extensions 56 straddling the snuffer cap 36 and actuates the same by means of lugs 58 operating in slots 52. A disc 46 secured to a side wall of the snuffer 38 has a tongue 48 to rotate the flint wheel 50 in a clockwise direction. The plate 10, holes 14, 18, 11 and 16, and ears 12 are formed in one piece from plate by stamping. Specification 586,982 is referred to.
Patent GB-115455-A (GB)
Title: Improvements in Button Clasps.
Inventor: STUART HENRY JOSEPH
IPC: A41F11/04
Filed: 1917-04-04
Abstract: 115,455. Stuart, H. J. April 4, 1917. Dress-suspender grips.-A button clasp for garment-supporters &c. is provided with a button having a headed stud which is passed through a hole in a tape which covers the base-plate of the button. An elastic sleeve 7 is slipped over the head of the stud 3 and presses against the tape D which may be attached as shown to the button loop C.
Patent GB-509165-A (GB)
Title: Improvements in or relating to insulators for use in electric overhead trolley wire systems
IPC: B60M1/18
Filed: 1938-02-17
Abstract: 509,165. Insulators. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. Feb. 17, 1938, No. 4922. Convention date, Feb. 20, 1937. [Class 36] A. section insulator for an overhead trolley wire system comprises a main insulating member 11, end members 13, 14 adapted to position the insulating member in operating relation in the overhead system, and means comprising an arc-current conducting path or path disposed so as magnetically to repel from the insulating member arcs formed by the passage of a current collector across the insulator. As shown in Fig. 1, the insulator is intended for use in a system wherein the current collector passes across the insulator from left to right, the collector being transferred from the end member 13 to an insulating runner 18, associated with the end member 14, by a series of metallic runners 15, 30, 36, 37 which are connected together in pairs, as shown, so as to sub-divide the are drawn by the current collector. The connectors, such as 38, 39, between the metallic runners are arranged mainly in a vertical direction so that the passage of arc-current therethrough produces a magnetic field tending to repel the arc from the insulating member 11. To reduce the arc-current, resistances 58, Fig. 9, may be used to connect the metallic runners 54 in pairs. In a modified construction, Fig. 6, coils 45 of resistance material are arranged on opposite sides of the insulating member and connected between metallic runners 30, 47, the resistance coils serving both to reduce the arccurrent and to blow out magnetically the arcs formed at the runners 30, 47.
Patent GB-1501362-A (GB)
Title: Method of and apparatus for severing synthetic textile sheet material or pile loops consisting of synthetic threads
IPC: D06C13/08
Filed: 1976-02-09
Abstract: 1501362 Grinding wheels and belts WIRKMASCHINENBAU KARL-MARX-STADT VEB 9 Feb 1976 [14 March 1975] 4932/76 Heading C4V [Also in Divisions B3 and Dl] A grinding element for severing a synthetic textile fabric or pile loops of a synthetic fabric consists of a pressure-moulded or cast polymerfiller mixture in which the filler is constituted by abrasive particles. The element may comprise a rotating wheel, Figs. 1-3 (all not shown), or a number of elements comprising individual plates may be associated with a belt drive, Fig. 4 (not shown). A preferred composition comprises ebonite containing 70-95%, by weight, of fine-grained corundum filler. "Fine-grained" denotes a particle size of 3 Ám to 55 Ám. Other specified abrasive particles are nitrides and diamond chips. The polymer may be a plastics material.