baber/WOPTO huggingface dataset:
Patent GB-376640-A (GB)
Title: Free-wheel and brake mechanism for velocipedes, cycles and other vehicles
IPC: B62L5/16
Filed: 1931-12-22
Abstract: 376,640. Brake shoes acting on drums. CONDOR MANUFACTURE SUISSE DE CYCLES ET MOTOCYCLES, Courfaivre, Switzerland. Dec.. 22, 1931, No. 35438. Convention date, Nov.. 7. [Class 103 (i).] In a free-wheel hub provided with a backpedalling brake drum arranged at one end, the thrust for applying the brake is produced by the axial movement of members in the interior of the hub on back-pedalling, the hub being driven in the forward direction through oneway clutch mechanism. The sprocket wheel 4 is fixed to a sleeve 5, which drives the hub 1 forward through a one-way clutch 6 of the wedging-roller type. In back-pedalling, bevelled teeth 22, Figs. 1 and 4, act on bevelled teeth on an inner sleeve 11, which is thus caused to slide on the spindle 8, thereby displacing rods 13, 13<1> slidably mounted in bores in the inner cone 7 of the ball bearing 3. The rods 13, 131 have bevelled ends engaging the correspondingly bevelled ends of rods 14, 14<1>, which are thus displaced radially to cause wedge-shaped heads 16, 161 to expand spring-controlled brake shoes 15, 15<1> against a brake drum 2. The shoes 15, 15<1> are radially slotted at their centres to receive pins rigid with a cover-plate 10, which is rigidly secured to the cycle frame by an anchor arm. During back-pedalling, rotation of the sleeve 11 is prevented by a one-way clutch 12 comprising rollers adapted to wedge into corrugations on the inner periphery of a hollow extension of the cone 7. The cone 7 and the hollow internally-corrugated part may alternatively be formed as separate members connected together. A disc 21 transmitting movement from the sleeve 11 to the rods 13, 131 may either be a separate member, or may be integral with the rods.
Patent GB-1217080-A (GB)
Title: Improvements in and relating to piston rods
Inventor: SMITH LAWRENCE HEDLEY
IPC: B23P15/10
Filed: 1968-07-25
Abstract: 1,217,080. Welding by pressure. ARMSTRONG PATENTS CO. Ltd. 25 July, 1968, No. 35442/68. Heading B3R.  In providing a piston-rod with an axially projecting spigot, the spigot is projection welded to the end of the rod. A piston-rod 12, for the piston of a telescopic hydraulic shock absorber, is cut from steel stock, formed with a reduced diameter end 16 threaded at 18 to mount a piston and has its end face formed with an annular groove 22 forming an axially extending frusto conical pip 28 (shown dotted). A spigot 10 is cut from steel stock, threaded at 14 to receive a valve body and then case hardened. The spigot and piston rod are located in a jig so that the unthreaded end of the spigot abuts the pip 28 and current is passed to projection weld the parts, the pip and spigot end fusing to form a circular flange-like weld 30 confined by the outer wall 26 of the groove 22. The piston is then mounted on the thread 18 and the valve structure is secured to the thread 14.
Patent GB-464633-A (GB)
Title: Improvements in and relating to drilling, boring, milling and like machine tools
IPC: B23B47/26
Filed: 1936-12-28
Abstract: 464,633. Balancing. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. Dec. 28, 1936, No. 35526. Convention date, Jan. 28. [Class 78 (ii)] [Also in Group XXII] In a drilling or like machine tool having a slide 15 movable along a horizontal guide 13 and carrying a vertically movable part such as a tool-spindle 1 and quill 2 which is balanced by a weight 3, the weight is carried by a lever 9 which is supported by one or more rollers 11 resting on a rail 12 formed on the guide 13, the free end of the lever being pivoted at 10 to the slide 15 so as to relieve the guide 13 of at least a part of the weight of the slide. The weight is attached to the quill by a chain 4 passing over pulleys 7, 8 on the lever, the pulley 7 being preferably journalled on the pivot 10. Instead of mounting the lever 9 directly on the roller 11, the lever may rest on a support carrying one or more rollers moving on the rail 12.
Patent GB-849219-A (GB)
Title: Improvements in or relating to magnetic ferrites
IPC: C04B35/26
Filed: 1956-11-21
Abstract: 849,219. Magnetic compositions. STEATIT-MAGNESIA A. G., and STEATITE RESEARCH CORPORATION. Nov. 21, 1956 [Nov. 21, 1955, Nov. 25, 1955], No. 35588/56. Addition to 849,217. Class 38 (2). Ferromagnetic ferrites having constricted hysteresis loops and comprising between 0.1% and 5% by weight of cobalt oxide added to copper-zinc; copper cadmium or magnesium copper ferrite, are produced as described in the parent Specification. The allowable percentages by weight of the main constituents are shown by the areas ABCD in Figs. 4-6. Reference has been directed by the Comptroller to Specification 803,625.
Patent GB-1037800-A (GB)
Title: Electronic timer
IPC: H03K17/292
Filed: 1964-08-31
Abstract: 1,037,800. Delayed switching circuits. BENDIX CORPORATION. Aug. 31, 1964 [Sept. 3, 1963], No. 35588/64. Heading H3T. A circuit for operating a relay 33 at a specified time after closure of a switch 13 comprises a capacitor 63 which charges up through a variable resistor 69 and operates the gate of an S.C.R. 43 through a unijunction transistor 77. When the S.C.R. fires it energizes the relay 33 and through contact 25 operates a stepping switch 27. A temperature-variable impedance 79 stabilizes the operating point of the unijunction. The R.C. circuit 35, 37 prevents arcing across the contacts and resulting transient damage to the S.C.R. Resistor 37 also provides the initial holding current for the S.C.R. for the inductive load of the relay coil. Different values of resistor 69 can be switched in. The circuit is suitable for operating inflatable de-icing elements on aircraft.
Patent GB-864293-A (GB)
Title: Improvements in apparatus for detecting inflammable gases
Inventor: SIEGER JOSHUA
IPC: G01N27/16
Filed: 1959-10-23
Abstract: <PICT:0864293/III/1> <PICT:0864293/III/2> An inflammable gas detecting apparatus comprises a wheatstone's bridge containing a detector arm 12, the spaces between the helix turns thereof being substantially equal to the wire diameter.  A balancing arm 13 has more widely spaced helix turns.  The wires, preferably at Pt (or Pd, Rh, Ni, &c.), are wound on ceramic or asbestos cores 16 and 17 held by supports 11, and the detector is made catalytically reactive to inflammable gases by impregnation with a mixture of Pt and Pd salts which are subsequently heated in a hydrogen atmosphere until they are sufficiently decomposed.  The elements are mounted on an insulating base 10 and covered with e.g. two layers of 50 mesh wire gauze to prevent flashback. Indicators or alarms &c. are connected as required in the circuit (see Group XXXVIII).
Patent GB-792485-A (GB)
Title: Process for the production of hardenable mixtures of polymerizable ethylenic derivatives and unsaturated polyesters
IPC: C08G63/553
Filed: 1955-12-15
Abstract: Hardenable mixtures comprise ethylenic monomers, catalysts and polyesters derived from a ,b -unsaturated dicarboxylic acids and polyhydric alcohols containing bis-(hydroxycyclohexyl)-alkanes of the formula: <FORM:0792485/IV (a)/1> whrein A is an alkylene group. Unsaturated acids specified are maleic and fumaric acids and their anhydrides, and the alkanes may be those obtained by hydrogenation of the corresponding bis-phenols as exemplified by bis-(hydroxy cyclohexyl)-methane, a ,a 1-bis (hydroxycyclohexyl) - ethane, b ,b  - bis - (hydroxycyclohexyl)-propane and 1,1 - bis - (hydroxycyclohexyl)-cyclohexane.  Optional polyester components are succinic, adipic, phthalic and terephthalic acids, ethylene and diethylene gylcols, propanediol and butanediols.  The polyesters are preferably stabilized with hydroquinone or t-butyl-pyrocatechol. Ethylenic monomers disclosed are styrene, divinylbenzene, acrylic and methacrylic acids, and esters of vinyl and allyl alcohols, and the catalyst used is 1-hydroxy-11-hydroperoxy-dicyclohexyl peroxide. Accelerators such as cobalt naphthenate and t-amines may also be included.  Optional ingredients included in the examples are solvents such as ethyl acetate, a castor oil modified alkyd resin and pigments such as calcium carbonate, barium sulphate and titanium dioxide.  The mixtures harden in air and find application in lacquers and coatings, e.g. on wood and iron, and in casting and moulding.  Glass fibre laminates may also be obtained.
Patent GB-1269998-A (GB)
Title: Carbinoalkylmercapto compounds and process for their manufacture
Inventor: HEUSLER K
IPC: C07D205/095
Filed: 1969-07-17
Abstract: 1,269,998. Azetidinones. CIBA GEIGY A.G. 17 July, 1969 [23 July, 1968; 11 Dec., 1968], No. 36127/69. Heading C2C. Novel compounds I (including optical isomers and O-esters, with mineral and organic acids, thereof ) wherein R is H or acyl, are obtained by treating II with a hydride reducing agent which is inert towards amide groups, e.g. sodium borohydride, and, if desired, in a resulting compound the hydroxy group is esterified, and/or, in a resulting compound having an acyl radical containing protected functional groups such groups are liberated, and/or an acylamino group is split off and, if desired, a free amino group is acylated, and/or a mixture of isomers is resolved. 1 - Acetyl - 2α - (2 - acetyloxymethyl - 2 - propylmercapto) - 3α - (N - phenyloxyacetylamino)- aseidtin - 4 - one is obtained by treating corresponding I with acetic anhydride. Pharmaceutical preparations contain I as active ingredient; administration may be enterally or parenterally.
Patent GB-996314-A (GB)
Title: Improvements in or relating to venetian blinds
IPC: E06B9/326
Filed: 1963-09-13
Abstract: 996,314. Toothed gearing. PER-CO MATERIALSERVICE. Sept. 13, 1963 [Sept. 19, 1962], No. 36149/63. Heading F2Q. A device for setting the obliquity of the laths of a venetian blind comprises flexible cords 19, 20 attached to the ends of parallel racks 13, 14 which are adapted to be moved longitudinally in opposite directions by rotation of a gear-wheel 16 arranged between them. The racks 13, 14 are guided in parallel grooves 11, 12 in a housing 10, and the cords 19, 20 are located in individual channels in a flexible tube 18. The gear-wheel 16 may be rotated by a hand wheel 23 adapted to engage a square recess in the gear-wheel 16, which is provided with a spring- pressed locking member 25.
Patent GB-395256-A (GB)
Title: Improved shuttering for concrete and like construction
IPC: E04G15/06
Filed: 1932-12-21
Abstract: 395,256. Moulding walls in situ. CAMUS, H., 101, Cours de la RÚpublique, Le Havre, Seine InfÚrieure, France. Dec. 21, 1932, No. 36223. Convention date, Dec. 22, 1931. [Class 20 (ii).] A collapsable core for forming hollows in cast concrete and like walls, comprises two parts 49, 50, each forming one side and one end of the cavity and spaced apart at diagonally opposite corners by two independent removable members 52. The core parts, in the form shown, are provided with upper and lower flanges 53, 54, which are perforated to receive a bolt 55 and a pair of spikes 58. The spikes hold the core parts in their correct relative positions. To remove the core after the concrete has set, the members 52 which abut against end flanges 51 of the core parts, are first loosened by rods 59 and then removed. The spikes 58 are then withdrawn and the core is raised by the handle 55.
Patent GB-363800-A (GB)
Title: Improvements in cotton harvesting machines
IPC: A01D46/10
Filed: 1930-12-02
Abstract: 363,800. Harvesting cotton. COTTON HARVESTER CORPORATION OF AMERICA, 541, Wood Street, Pittsburg, U.S.A.-(Assignees of Wirth, L. E. ; 421, Stratton Lane, East End, Pittsburg, U.S.A.) Dec. 2, 1930, No. 36317. Convention date, May 21. [Class 6 (iii).] A cotton harvester of the type in which the cotton is picked by rotary needles 21 projecting from rotating cylinders has the cylinders so mounted that they may be adjusted either angularly or transversely. The cylinders are supported by members 3, 4, having tubular portions 6 journalled on tubular pivots extending from a housing 2 on the machine frame. Motion is transmitted to the needles and their associated mechanism from a power shaft through a clutch 10a, gearing 10, telescopic side shafts 9, and worm gear 7, 8. To adjust the cylinders laterally one or both of the tubular sleeves 6 is moved along its journal 5. A rod 11 provided with nuts 12 connects the two cylinders and permits them to be angularly adjusted as a unit. They are adjusted angularly about the pivots 5 by set-screws passing the arms of a yoke connected to the cylinder assembly and bearing against a rod 15 fixed in the main frame. Grids 20 to co-operate with the picking needles are mounted on vertical rods that are carried by adjustable links from brackets extending from the cylinder assemblies.
Patent GB-906478-A (GB)
Title: Improvements in or relating to a method and a device intended for the improvement ofthe contexture of ingots during their setting
IPC: B22D7/00
Filed: 1960-10-26
Abstract: 906,478. Casting processes. DAUSSAN, H. J. Oct. 26, 1960 [Oct. 28, 1959; May 31, 1960; July 2, 1960; Aug. 26, 1960], No. 36707/60. Class 83 (1). The head of an ingot is kept liquid by immersing in a peripheral portion a substance which will create an exothermic effect and be decomposed by the molten metal and evolve gases to agitate the melt. One form of device for supporting in the top of the mould L, Figs. 1, 2, comprises a metal frame A supporting plates B comprising an upper member 8 of an inert material such as a mixture of sawdust or cellulose fibres or waste products bound with sodium silicate, and a bottom member 9 of an active material which will disintegrate under heat. The active material may comprise, for example, wood fibres, sawdust, or cellulose waste, sand, an aqueous solution of sodium silicate, powdered sodium carbonate, manganese dioxide, and ferro-silicon, ferro-siliconaluminium or other reducing metals or alloys. The active members may be formed on wire netting, either singly, Fig. 17, or by mounting on a netting band, Fig. 12. Alternatively small members B3, Figs. 6 and 7, may be suspended from bars 36. A thin sheet metal cover T is pierced by the casting jet.
Patent GB-511343-A (GB)
Title: A road-vehicle suspension system
IPC: B60G3/14
Filed: 1938-12-20
Abstract: 511,343. Road - vehicle spring suspensions; steering mechanism. WOTTIER, M. J. B. Dec. 20, 1938, No. 36995. [Class 108 (ii)] [Also in Group XXXI] In a road-vehicle suspension system, of the kind in which the wheel assemblies are carried at the rear end of V-like trailing arms whose forwardly extending limbs are journalled at spaced points on a transverse bar of the frame, the arms being connected to the frame' near their rear ends by the suspension springs, the pivotal axis of a trailing arm is arranged at a materially lower level than that of its wheel. In the construction shown, a trailing wheelcarrying V-arm 13 is pivoted at spaced points on the transverse chassis bar 14, and at 27, near its upturned rear end, is pivotally attached to the centre of a longitudinal laminated spring 22 shackled to the chassis frame. The steering gear 29. operates an arm 30 and link 31 connected to one pair of bell-crank levers 32, 35 adjustably connected at 36. Each of the levers 32, 35 is connected to a steering-arm 38 by a link 37, the connections of the bell-cranks 32, 35 to the links 37 lying in the line of the bar. 14. Coil springs may be used in place of the leaf springs.
Patent GB-1532916-A (GB)
Title: Weft thread selector for a shuttle-less loom
IPC: D03D47/38
Filed: 1977-09-05
Abstract: 1532916 Weft selector for shuttleless looms SAURER DIEDERICHS 5 Sept 1977 [5 Nov 1976] 37023/77 Heading D1E A draw bar device 12 essentially similar to that described in Specification 1327866 is operated by a pivoted lever 9 which selects one of four wefts by operating on rollers 32 the lever 9 being pivoted by a sheathed cable 7 driven by two dobby levers 4, 5. The end 52 of sheathed cable 7 is connected to levers 4, 5 by a deformable parallelogram linkwork to provide four positions for the extreme movement of said levers. A mechanical memory device 8 comprises a spring 8 which is compressible by the cable 7 to various discrete positions so that it can "store" the next required position oil lever 9 whilst lever 9 is locked angularly by pin 40 in one of the holes 42 in the draw bar arrangement.
Patent GB-1488736-A (GB)
Title: Manufacture of iron(ii)chloride
IPC: C01B7/03
Filed: 1975-09-09
Abstract: 1488736 Ferrous chloride RHEINISCHE BRAUNKOHLENWERKE AG 9 Sept 1975 [14 Sept 1974] 37079/75 Heading ClA Iron (II) chloride is made by converting monomeric iron (III) chloride into dimeric form in the lower part of the reactor 1 held at a temperature above the melting of iron (III) chloride or by introducing said dimeric form into said lower part of the reactor, whereby the rising dimeric vapours decompose to form a mixture of FeCl 2 , Cl 2  and monomeric iron (III) chloride, completely condensing the monomeric iron (III) chloride vapours in the upper part of the reactor which is held at temperature below said melting point, the monomeric iron (III) chloride thus produced being returned to the lower part of the reactor where it is again vaporized and the iron (II) chloride and chlorine gas formed are removed from the lower and upper parts of the reactor respectively. An inert and optionally preheated carrier gas, e.g. HCl, N 2  or He may be introduced into the lower part of the reactor to enhance the movements of the circulating system. When the iron (III) chloride is produced outside the reactor it may be introduced by means of the carrier gas. At normal pressure the temperature in the lower part of the reactor is preferably 300-320‹ C. and is 100-300‹ C. in the upper part. In the illustrated embodiment, the reactor 1 is provided with a heat circuit comprising evaporator tubes 2, a compressor 3, condenser tubes 4 and a cooler 5 whereby heat is removed from the upper part of the reactor and supplied to the lower part. Any solid iron (III) required precipitating on the reactor walls is removed by means of a scraper 8.
Patent GB-931107-A (GB)
Title: Improvements in and relating to the working-up of chocolate
Inventor: CAVALIERI EMILIO
IPC: B01F13/10
Filed: 1959-11-02
Abstract: 931,107. Mixing chocolate. CARLE & MONTANARI S.p.A. Nov. 2, 1959, No. 37080/59. Class 86. A chocolate crushing machine has two coaxial horizontal mixing pans 4, 5 having a heating jacket 6 and connected by ports 30 closable by arcuate shutters 29. A central shaft 3 carries impeller blades 28 in the inner compartment 5 in which operate also two truncatedcone shaped rollers 9 journalled in a casing 20a also carried by the shaft 3. The outer compartment 4 has a stirrer 27. The shaft 3 drives through a chain 12 a rotating cover 18 from which depends into the outer compartment 4 the stirrer 27 which is thereby also given a planetary motion about the shaft 3; the rollers 9 and the stirrer 27 are also rotated on their own axes, the rollers by reaction gearing 21, 22, 23 and the stirrer by the chain drive 10, 24, 25. In operation, the chocolate mixture is first worked up in the outer compartment 4 with the shutters 29 closed; they are then opened and a circulation of the material through the two compartments as shown at X is set up by the action of the impeller 28 and rollers 9. The shutters 29 are mounted on an internally toothed ring 33 actuated by a hand wheel 35.
Patent GB-1328328-A (GB)
Title: Electrophotographic photosensitive material
IPC: H01L31/08
Filed: 1972-08-09
Abstract: 1328328 Electro-photographic material FUJI PHOTO FILM CO Ltd 9 Aug 1972 [12 Aug 1971] 37234/72 Headings G2C C1702 and C17E An electro-photographic device which can be positively or negatively charged comprises a conductive support coated with a dispersion in a resin binder of a mixture of zinc oxide and a  titanium oxide in a molar ratio of 3:1 to 70:1, the titanium oxide having been obtained by hydrolysis of an organic titanium compound and the mixed oxides having been heat-treated at at least 300‹C. The organic titanium compound may be an alkyl titanate, acyl titanate or titanic acid ester. The zinc oxide is preferably obtained by vapour phase oxidation. The mixture may be formed by dispersing ZnO powder in an alcohol, adding sufficient water to hydrolyse the organic titanium compound then adding the latter gradually preferably with ultrasonic or mechanical agitation, and separating the mixed oxides in a centrifuge. Alternatively the titanium oxide may be prepared separately and the oxides mixed. The support may be paper or polymer made conductive e.g. by vapour deposition of aluminium. The coating composition may have sensitizing dyes added to it, of which examples are given. The binder may be, inter alia, a mixture of a styrenated alkyd resin and a polyisocyanate.
Patent GB-779951-A (GB)
Title: Improvements in or relating to electromagnetic actuating mechanisms or relays
Inventor: WOODHEAD HARRY STANLEY
IPC: H01H50/54
Filed: 1954-12-29
Abstract: 779,951. Electromagnets. PLESSEY CO., Ltd. Dec. 29, 1955 [Dec. 29, 1954], No. 37511/54. Class 35. [Also in Group XXXVII] An electromagnetic actuating mechanism comprises an armature 1 having side ears 13 pivoted on a non- magnetic pin 3 between ears 21 of a yoke 2 having a core 5 mounted in a hole 7. Energization of the coil 4 causes movement of the armature end 1a towards the core against the bias of a spring 8 connected between points 9, 10, stops 11 engaging the edges of the ears 13 to limit the return movement of the armature. Adjacent ears 13, 21 are closely spaced, by washers 14 to provide low-reluctance magnetic paths between the armature and yoke, the ears 13 lying within the boundary of the ears 21 throughout the range of armature movement.
Patent GB-1444086-A (GB)
Title: Polyurethanes
IPC: C08G18/12
Filed: 1972-08-12
Abstract: 1444086 Polyurethanes DUNLOP Ltd 14 Sept 1973 [12 Aug 1972] 37731/72 Heading C3R Polyurethanes are prepared by reacting a mixture of a relatively low M.W. diol having a M.W. up to 400 and a relatively high M.W. diol having a M.W. of at least 750, in solution in an inert solvent, with from 100 to 120% of the stoichiometric equivalent of a polyisocyanate in a process comprising (a) reacting an initial charge of 90 to 99% of the stoichiometric equivalent of the polyisocyanate with the diol mixture, the initial concentration of the reactants in the solvent being 60 to 80% by weight; (b) adding the remainder of the polyisocyanate incrementally during or on completion of the reaction (a); and (c) adding additional solvent, as the polymerization proceeds, only when necessary to maintain the processibility of the reaction mixture. The relatively low M.W. diol may be ethylene glycol, propylene glycol, 1,4-butane diol or 1,6-hexane diol. Polyethers and polyesters are the preferred relatively high M.W. diols. The most preferred relative molar proportion of the relatively low M.W. diol to the relatively high M.W. diol is between 2 : 1 and 5 : 1. A triol may be included in the diol mixture. The solvent may be toluene, a ketone, e.g. methyl ethyl ketone, an ester, e.g. ethyl acetate or a chlorinated hydrocarbon. An adhesive may be prepared by mixing the polyurethane elastomer with a resin which may be phenol-formaldehyde, melamineformaldehyde, urea-formaldehyde, a rosin ester, a metal resinate, a vinyl chloride-vinyl acetate copolymer, a chlorinated rubber, an oxidized wood rosin, a coumarone resin or a furane resin.