baber/WOPTO huggingface dataset:
Patent GB-333209-A (GB)
Title: Electromagnets
IPC: H01F7/20
Filed: 1929-05-03
Abstract: 333,209. Sokoloff, B. N. May 3, 1929. Electromagnets.- The armature of an electromagnet of the pot or yoke type consists of a number of separate portions, relatively movable and serially arranged in a single air gap. Fig. 1 shows three such portions 5, 6, 7 moving in a nonmagnetic sleeve 11 within a coil 6 having pole-pieces 1, 4 connected by a magnetic casing 3. To the piece 5 is secured a rod 8 of nonmagnetic material formed with shoulders against which the pieces 6, 7 bear. When the magnet is not excited, the space between the pole-piece 4 and the piece 7 is less than that between the piece 7 and the piece 6, which is less than that between the piece 6 and the piece 5. When the magnet is energized the piece 7 comes in contact with the pole-piece, then the piece 6 with the piece 7 and the piece 5 with the piece 6. The magnet may be energized by currents of strengths corresponding to these three stages. Fig. 7 shows the invention applied to a power hammer &c. The pieces 39, 45, 44 of the armature are carried on the shouldered and nonmagnetic piece 46 which strikes the head of the tool 57. The pole-pieces 31, 32 are laminated and held together by endpieces and bolts and connected magnetically by a casing 35 of corrugated sheet-metal slotted to lessen eddy-currents. The armature is returned by a spring 42, which may be of such strength that the return may take longer than the power stroke, and the length of the stroke is regulated by a screw 58. The winding is in two portions 59, 60 of different numbers of turns and connected in parallel. This is stated to reduce sparking.
Patent GB-1098878-A (GB)
Title: d-4-phenyl-ª‡-methylphenylacetic acid and its derivatives and anti-inflammatory compositions containing such compounds and their racemic forms
IPC: C07C69/616
Filed: 1965-04-01
Abstract: 4 - Phenyl - a  - methylphenylacetic acid and its salts, esters and anhydride, the d forms of which are novel, are prepared by reacting biphenyl with ethyl oxalyl chloride to give ethyl - 4 - biphenylglyoxylate, converting this with methyl magnesium iodide to ethyl-4-phenyl-a  - hydroxy - a  - methyl - phenylacetate, hydrolysing this to the free acid and boiling this with red phosphorus and iodine.  The dl-acid thus prepared may be resolved and converted to the salts, esters and anhydride by standard procedures. The preparation of the ethyl, propyl, ethoxyethyl, tetrahydrofurfuryl, phenyl, benzyl, g -diethylaminopropyl, g -piperidinopropyl, b -piperidinoethyl and b -diethylaminoethyl esters, the last-named via the acid chloride, is described, and other esters are referred to.ALSO:Compositions for treating inflammation comprise 4-phenyl-a -methylphenylacetic acid or its salts, esters or anhydride, in d- or dl-form, and an orally administrable pharmaceutical liquid diluent containing a suspending agent, a solid, semi-solid or oleaginous pharmaceutical diluent or carrier, a pharmaceutical coating, a sterile isotonic liquid, carrier or diluent, or a liquid propellant.
Patent GB-1154663-A (GB)
Title: Improvements relating to Electrical Detection Apparatus and Method.
IPC: G01N27/66
Filed: 1967-03-28
Abstract: 1,154,663. Ionization fire alarm systems. DENVER BURGLAR ALARM PRODUCTS Inc. March 28, 1967 [March 30, 1966], No. 13900/67. Heading G1N. An ionization fire alarm depends on the state of charge reached by a capacitor which is charged through the ionization chamber and periodically discharged. The circuit comprises three parts, and uses unijunction transistors: (i) a first R. C. timing circuit 29-31 controlling transistor 24 to energize relay 26 which is connected in a "self-holding" circuit in series with the alarm lamp. (ii) a "measuring" capacitor 15 charged through ionization chamber 14. (iii) a second R. C. timing circuit 44, 45 (with a shorter time-constant than the first) controlling transistor 41, to periodically energize relay 43 and connect the measuring capacitor 15 to the base of transistor 33 which normally fires to discharge capacitor 15 and also capacitor 31 so that the alarm circuit is not energized. In event of a fire, the products of combustion reduce the conduction through the ionization chamber 14 so that capacitor 15 is not sufficiently charged to fire transistor 33 and thus capacitor 31 continues charging to fire transistor 24 and operate the alarm relay.
Patent GB-598195-A (GB)
Title: Improvements in or relating to electric heating elements
IPC: H05B3/06
Filed: 1945-06-02
Abstract: 598,195. Electric heating resistances. WILKINSON, G. H. June 2, 1945, No. 13904. [Class 39 (iii)] [Also in Group XXXVI] A heater comprising a rod 1 of insulating material with a helically. wound resistance element 2 or incorporating resistance material therein has fixed at each end a metal cap 3 with a supporting arm 8 welded thereon and connected to clamps serving as terminals. The inner end of the cap is swaged into an annular groove 4 in the reduced end of the ceramic rod, and lugs 5 on the inner end of the cap are bent over the ends of resistance wire 2 wound on the caps. A rivet 7 passes through the end cap and rod, or the cap is depressed into grooves 6 on the rod to prevent rotation. The metal arm 8 may be of " Inconel " (Registered Trade Mark) and has a slotted end 11 engaging a terminal post 12 in a support 14 on an electric fire.
Patent GB-291026-A (GB)
Title: Improvements in and relating to electric rectifiers
IPC: H01L25/07
Filed: 1928-05-12
Abstract: 291,026. Siemens & Halske Akt.- Ges. May 24, 1927, [Convention date]. Contacting-solid resistances. - In dry surface contact rectifiers of the metal-metal oxide type, variation in contact pressure due to unequal expansion between the disc elements l and the support on which they are clamped on increase of temperature is avoided by making the support a of a material having the same expansion coefficient as the material of the discs. A comparatively long spring f is introduced as a further safeguard against variation in clamping pressure. Nickel alloys, German silver, and bronze are mentioned as suitable materials for a support for a rectifier in which the electrodes are of copper and copperoxide.
Patent GB-631762-A (GB)
Title: Improvements in or relating to self-oiling bearings
IPC: F16N9/02
Filed: 1947-05-27
Abstract: 631,762. Lubricating. RAMSDEN & CHAPLIN PROPRIETARY, Ltd. May 27, 1947, No. 14065. Convention date, May 28, 1946. [Class 12 (iii)] Means for lubricating the bearing 13 of a pulley 2 rotatably mounted on a shaft 14 comprise an oil reservoir 6 formed between the bearing 13 and a hollow boss 3 of the pulley 2, - and conduits through which the oil may be delivered to the interior of the bearing. A shaft extension 18, shown in Fig. 5, is secured to the shaft 14 by bolts 22 and has a socket portion 21 fitting over the end of the shaft. The socket portion 21 passes through an aperture in the end wall 26 and co-aligned circumferential oil grooves 27, 28 are formed in the two parts. Several ducts 29 are formed between groove 28 and a chamber 33 disposed between the end face of the member 18 and the adjacent end of the shaft 14. Passages 34 from the chamber 33 lead to the centre of the bearing surface. The bearing member 4 has an annular groove 16 therein which is connected to the reservoir 6 by passages 17. An oil inlet 7 is provided in the boss 3, and an auxiliary shaft bearing may be located at the extension 18. In operation, oil is centrifuged in the reservoirs 6 and an oil mist or spray is formed which collects in the grooves 27, 28. Oil from the groove 28 gravitates through the ducts 29, enters the chamber 33 and then flows to the bearing surface through passages 34. The oil then returns to the reservoir.
Patent GB-573369-A (GB)
Title: Production of polymeric materials
IPC: C08F214/08
Filed: 1941-11-04
Abstract: Polymeric materials are prepared by causing vinylidene chloride, by itself or together with one or more other polymerizable compounds containing the group >C=CH- which are not present in preponderating amount, to polymerize in an aqueous medium in the presence of persulphuric acid or a water-soluble persulphate and of a water-soluble compound capable of taking up molecular oxygen.  The other polymerizable compounds specified are the esters, amides and nitriles of acrylic, methacrylic, fumaric and maleic acids, styrene, vinyl ethers and vinyl esters with inorganic or organic acids.  The aqueous medium may be such that the polymerizable material is dispersed or dissolved therein, and may be weakly acid or alkaline. The persulphate may be the ammonium, sodium or potassium salt, and the compound capable of taking up molecular oxygen may be sulphurous acid or its water-soluble salts, water-soluble hydrosulphites or pyrosulphites, hydroxylamine or hydrazine or their water-soluble salts, thioglycollic acid or its water-soluble salts or addition compounds of aldehydes with salts of oxyacids of sulphur.  When the aqueous medium is such that the polymerizable material is not wholly dissolved, emulsifying agents may be present, e.g. soaps, the water-soluble salts of sulphonated animal and vegetable fats and oils, the water-soluble salts of the sulphuric esters of fatty alcohols, and water-soluble colloidal materials such as water-soluble cellulose ethers.  The polymerization may be carried out in a closed vessel which restricts the ingress of air or in a vessel from which air is displaced by an inert oxygen-free gas such as nitrogen or carbon dioxide.  The polymerized material may be isolated by precipitation with electrolytes, by evaporation, or by spray drying. Examples are given of the polymerization of vinylidene chloride in the presence of ammonium persulphate and of hydrazine sulphate, sodium hydrosulphite, sodium bisulphite, sodium sulphite, sodium formaldehyde sulphoxylate or sodium thioglycollate, and of the interpolymerization of vinylidene chloride with vinyl acetate, vinyl chloride, methyl methacrylate or styrene in the presence of ammonium persulphate and sodium hydrosulphite.  Specifications 525,048 and 532,308 are referred to.
Patent GB-1004937-A (GB)
Title: Preparation of molded articles
IPC: B29C43/12
Filed: 1964-04-08
Abstract: 1,004,937. Casting fluoro and fluoro-chloro polymeric materials. HAVEG INDUSTRIES Inc. April 8, 1964 [April 11, 1963; Aug. 27, 1963], No. 14409/64. Heading B5A. A method of moulding articles, in particular hollow articles, comprises placing in a porous mould a slurry of a polymeric halohydrocarbon in a liquid dispersant inert to and capable of wetting the halohydrocarbon, applying a pressure differential between one side of the mould and the other to conform the halohydrocarbon and to remove a substantial amount of the dispersant, and heating the conformed polymeric halohydrocarbon to the fusion point of the polymer. The polymeric material is from the group containing P.T.F.E., polymonochlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, polyhexafluoropropene and copolymers of tetrafluoroethylene with members of the group containing hexafluoropropene, vinyl fluoride and vinylidene fluoride and the copolymer of vinylidene fluoride with hexafluoropropene. Suitable liquid dispersants include kerosene, naphtha, hexane, n-heptane, tetrachloroethylene, pinene ethyl alcohol, acetone, isopropyl alcohol, methyl alcohol, diethyl ether, ethyl acetate, dibutyl phthalate and triethanolamine, and the porous mould may be made, e.g. of salt, sand, glass, corundum, metal resin bonded sand or microporous thermosetting resins such as phenol-formaldehyde, melamineformaldehyde, ureaformaldehyde, alkyd resin or epoxy resin. In the embodiment of Fig. 2, a P.T.F.E. article 18 is formed by applying a vacuum to a mould 2 and subsequently removing the mould from the vacuum chamber 8 and heating it to sinter the article. A low density product is obtained in this way which may be further compacted by using a hydroclave, the article being removed from the mould and placed in a bag impervious to the liquid of the hydroclave (Fig. 3, not shown). Alternatively, an autoclave or cableclave process may be employed. Also a male mould member may be used of similar or different shape from mould 2 (Fig. 7, not shown). Instead of using a vacuum, a direct pressure method may be employed and in the embodiment of Fig. 6 pressure applied through an inlet 58 by admission of air, nitrogen, argon, helium, carbon dioxide, carbon monoxide or nitrous oxide, is combined with a spray 52 through which the slurry is pumped to be deposited on to the surface of a porous mandrel 44. The mould may be rotated during the introduction of the slurry or the latter may be introduced by means of a rotating spray. Articles having areas of varying thickness may be obtained by tilting the mould, varying its porosity or varying the degree of vacuum applied.
Patent GB-636688-A (GB)
Title: Yarns and fabrics and method of making same
IPC: D02G3/36
Filed: 1947-05-30
Abstract: 636,688. Yarns. UNITED MERCHANTS & MANUFACTURERS, Inc. May 30, 1947, No. 14456. Convention date, Nov. 30, 1946. Drawings to Specification. [Class 120 (iii)] A composite yarn comprising a continuous filament nylon core and a wrapping of staple fibres is characterised in that the nylon core is in interlocking engagement with the wrapping of staple fibres. The yarn may be formed by wrapping the nylon core preferably with a staple rayon wrapping and then subjecting it to boiling water, or steam under 15 to 30 lbs. pressure for about 1¢ to 3 minutes, so that the core and wrapping interlock but do not permanently adhere together. Alternatively, a fabric may be woven from the composite yarn and the fabric heat treated as above to interlock the core and wrapping of the yarn. The core of the yarn may be of 7 - 25 turns per inch, 20-75 denier 10 filament nylon, and the wrapping of from 3 - 8 hank rayon fibres, preferably of average length 1¢ to 3 inches, the composite yarn size being from 20À5 - 59À 5 cotton count, the rayon fibres being from 48 À 4 - 88 À 8 per cent of the yarn content, and the abrasion resistance from 16 - 106 strokes. The number of turns per inch of the composite yarn may be from 14 to 25. Alternatively, the wrapping fibres may be of polyvinyl chloride and acetate copolymers, polymethacrylonitrile, nylon and blends of these fibres with cotton, wool, &c.
Patent GB-253711-A (GB)
Title: Improvements in liquid rheostats
IPC: H01C10/02
Filed: 1925-06-04
Abstract: 253,711. West & Co., Ltd., A., and Breeze, V. June 4, 1925. Liquid resistances.-In a rheostat of the type comprising a fixed electrode and a moving electrode moving insulated shields are interposed between the electrodes when these have reached a certain distance apart so as to increase the resistance still further. In the arrangement shown one electrode 3 is fixed at the bottom of a vessel 2 at the top of which are pivoted flaps 6. 7 of insulating material. These flaps are raised into the horizontal position by their own buoyancy, increased by floats 15, and by springs, but are forced down by the moving electrode 4 and held by guides 17, 18 attached thereto.
Patent GB-1093745-A (GB)
Title: A hydraulic direct-acting shock absorber
IPC: F16F9/348
Filed: 1966-04-01
Abstract: 1,093,745. Shock-absorbers. MONROE AUTO EQUIPMENT CO. April 1, 1966 [April 22. 1965], No. 14593/66. Heading F2S. In order to prevent aeration of the liquid in an hydraulic shock-absorber of a standard type and comprising a two-way valved piston 21 and rod 9 in a working cylinder 11 which communicates with an annular compensation reservoir 10 within an outer cylinder 6 through a foot valve assembly 38 a central chamber 24 in the body 39 of the valve assembly 38 communicates with the reservoir 10 solely through a laterally directed-passageway 43 in the body 39 so that, when the shock absorber is mounted, e.g. horizontally with the passageway 43 at the bottom position, there is no danger of air, present in the reservoir 10 above the liquid, from being drawn into the working cylinder 11. The body 39 has a recess 55 to receive a projection 56 on an end closure cap 12 so that the passage 43 which is located opposite the projection 56 can be located at the bottom of the horizontal position of the shock absorber. The word " top " or other connotation can be stamped, painted or otherwise placed on the cylinder 6.
Patent GB-829445-A (GB)
Title: Railway route-setting systems
Inventor: OEHLER KARL
IPC: B61L19/06
Filed: 1957-05-08
Abstract: 829,445. Railway route-setting systems. SOC. TECHNIQUE POUR L'INDUSTRIE NOUVELLE S.A. STIN. May 8, 1957 [May 8, 1956], No. 14610/57. Class 105. In a railway route-setting system in which the control circuits comprise electrical unitary networks, the circuit diagrams of which simulate the track layout and in which means are provided between corresponding lines of two such networks so verify the electrical conditions in these two unitary networks, e.g. as described in Specification 793,945, there is provided in the lines of the unitary networks at places corresponding to the locations of the track points in the track layout, electronic control elements having two or more terminals which determine the direction of the current or polarity of the voltage in the adjoining line sections. Such electronic elements may be thermionic valves, cold cathode tubes, transistors or crystal diodes. As shown at A and B, Fig. 2, two unitary networks simulate the track layout shown in Fig. 1, and corresponding lines in the networks are coupled by electromagnetic O1, O2, O3 and O4, thereby forming a " grid." To set up a route from track A1 to track B3, Fig. 1, voltage is applied to the line A1, Fig. 2, in one network A, corresponding to track A1 to reach all the other lines except the line corresponding to track A2, while in the network B a voltage applied to the line B3 must reach the line corresponding to tracks A2 and A1, but not to the lines corresponding to tracks B1 and B2. As shown, the voltage applied to line B3 is negative and to A1 is positive and rectifiers 11 are poled as shown to carry out the required conditions stated and the control circuit, e.g. for the route A1-B3 runs from line Al through relay winding O1 to rectifier 11 and line B3 in network B, the relay O1. on operation being employed, e.g. to move the points W1 to the required position. A circuit may also be traced through the thick lines in the drawing for the relay 02 which is used to move the points W2 and W3 to the required positions. The polarity applied to line B3 may also be positive in which case the rectifiers 11 in network B are reversed from the condition shown and the verifying elements coupling the networks may be electronic instead of electromagnetic (Fig. 3, not shown). The verifying elements may also take the form of relays with divided windings as shown at 03 and 04, Fig. 2, and may be such that they pick up only when both windings are energized simultaneously or current through either winding alone may be sufficient to energize the relay. Several examples of connections for resistors in place of rectifiers 11 are described.
Patent GB-1393110-A (GB)
Title: Adjustment mechanism eg for use in a digital timer
IPC: H01H43/04
Filed: 1973-03-27
Abstract: 1393110 Manual counters SEIKO KOKI KK 27 March 1973 [28 March 1972] 14613/73 Heading G4D [Also in Divisions H1 and F2] An adjustment mechanism for a digital timer comprises number wheels 14a, 15a to which ratchet wheels 33, 34 are attached and an adjusting rod 16a extending for longitudinal movement between the ratchet wheels 33, 34 and carrying a pivotally mounted pawl member 30 which has two pawl parts 31, 32 which are adapted to be brought into engagement selectively with the ratchet wheels 33, 34 respectively by vertical movement of a plate 42 provided with an operating button 43 and attached to the rod 16a by a spring 47. When one of the pawl parts 31, 32 is in engagement with the corresponding ratchet wheel, axial movement of the rod 16a in the direction of the arrow B causes angular displacement of the ratchet wheel. Springs 35, 36 prevent reverse rotation of the ratchet wheels. In a modification, a vertically movable selector plate 54, Fig. 4, is provided with fingers 61, 62 which are adapted to engage a pin 63 on a toggle arm 30.
Patent GB-575275-A (GB)
Title: Improvements in sheet feeding tables for office printing machines
IPC: B41L47/24
Filed: 1944-07-31
Abstract: 575,275. Feeding sheets. BLOCK & ANDERSON, Ltd., GERLACH, H., and WRIGHT, A. J. J. July 31, 1944, No. 14619. [Class 100 (i)] A sheet-feeding table for an office printing- machine is constructed of a part 13 which extends approximately from the wall 14 of the frame to the printing-rollers 10, 11 and a part 16 which can be withdrawn from a position below the table section 13 to the position shown in order to form a longer table for dealing with longer sheets. The parts 13, 16 are flush when in the position shown, and the part 16 is integral with a thinner part 17 which forms a support for the part 13. The parts 16, 17 are capable of sliding in guides attached to brackets 15 secured to the side frames of the machine, and the part 17 is pressed upwards by rollers 18 carried by spring-raised slides 19, and is fitted with a stop 25 which limits the outward motion of the parts 16, 17. When the parts 16, 17 are pushed inwards the part 13 is supported by the part 16. A handle 24 is fitted at the part 16, and screw-nuts 23 serve to adjust the spring- pressure on the slides 19.
Patent GB-1034484-A (GB)
Title: Improvements in or relating to the electrodeposition of copper
IPC: C25D3/38
Filed: 1963-04-11
Abstract: Copper plating baths include a poly-ether compound containing at least 3 and preferably 6 ether groups and no aliphatic chain exceeding 6 C atoms together with an organic sulphide group which may be linked to an -SO3H group.  Alternatively the polyether and the S-compound may be added as separate compounds. The polyethers include polymers of 1:3 dioxolane as described in Specification 1,020,168, preferably of mol. wt. about 5000. They may contain the group (-C2H4OC2H4O-)x where x is 3 or more, or (-C3H6OC3H6O-)y where y is 3 to 10.  The S-compounds include thiols, phenyl disulphides, and have present halogen, alkoxy, and other groups. Phenazine dyes may also be added.  The copper salt may be sulphate, fluoborate, or a copper alkyl sulphonate or di-sulphonate.  The poly-ethers having a terminal OH group form compounds with alcohols, chlorhydrin, nitriles, sulphonic acids, amides, alkanolamines and other compounds. The S-compound when added as a separate compound, preferably has a sulphonic group which may be used as a salt e.g. of triethanolamine, guanidine, ethylene diamine, or pyridine.  A range of examples of poly-ethers and S-compounds are given with graphic formulae.  In plating iron and steel, a preliminary flash coat of Cu or Ni is desirable. Preferably phosphorized copper anodes are used in the main plating process.