baber/WOPTO huggingface dataset:
Patent GB-987997-A (GB)
Title: Alternative-route blocking circuit arrangements for railway signalling systems
IPC: B61L19/06
Filed: 1962-01-11
Abstract: 987,997. Route setting. STANDARD TELEPHONES & CABLES Ltd. Jan. 11, 1962 [Jan. 12, 1961], No. 1083/62. Heading B7N. In a route setting system for the track arrangement shown in Fig. 2 which includes entrance-exit points S, Z between which a preferred route including track sections 1R and 4L and an alternative route including track sections 1L, 2L, 3R and 4R exist, the setting up of the alternative route is prevented by opening the circuit means controlling the reverse switching of the track switch providing access to the alternative route. The track switch giving access to track section 1L and 1R is controlled by the circuit shown in Fig. 3 which includes normal and reverse switching means WSR and WSL each energized via a transformer, a transistor amplifier and a back contact WSR1 or WSL1 of the other switching means. The back contact WSL1 in series with the energizing circuit to the normal switching means WSR is shunted by a removable bridge a + to b + whereby when circuits E to L and E to R are energized via the entrance-exit arrangement only the normal switch means WSR is energized. When access to the alternative route is desired bridge a + to b + is removed and bridge a - to b - across back contact WSR1 is inserted.
Patent GB-875885-A (GB)
Title: Improvements in or relating to speed control apparatus
Inventor: HORNER REGINALD GEOFFREY
IPC: H02P29/00
Filed: 1959-01-12
Abstract: 875,885. Automatic speed-control systems. ILFORD Ltd. Dec. 31, 1959 [Jan. 12, 1959], No. 1102/59. Class 38 (4). [Also in Group XVI] A web 1 passes from feed roll 2 to a roll 6 at which a coating is applied to the web which then passes to a drying zone 8 and to a take-up roll 12, a roll 10 being driven to draw the web through the system of rolls. The roll 6 drives magnetic tape 13 so that an electric signal is produced at head 16, the frequency of the signal being proportional to the speed of the roll 6. In another arrangement, a radial optical grating is secured to the roll 6 and a fixed optical grating is placed in line therewith, a beam of radiation passing through the gratings to a photo-cell which thus provides a signal having its frequency proportional to the speed of the roller 6, Figs. 2, 3 (not shown). The roll 6, 4 or 7 has a driving clutch of the magnetic particle type, powered by an electric motor and a braking clutch with an anchor. The output from the photo-cell is amplified, limited and frequency demodulated. The resultant frequency proportional voltage is compared with a direct reference voltage and the error voltage is applied to an amplifier which energizes the two clutches in a push-pull manner. The speed of the web is thus maintained at a substantially constant value determined by the reference voltage, Fig. 5 (not shown). Alternatively, the output of the frequency demodulator may be coupled through a capacitor to the input of a push-pull amplifier controlling the clutches. This system does not control the mean speed of the web but minimizes short-term speed variations, Fig. 6 (not shown). In a further modification, the output of the photo-cell is amplified and compared with the output of a reference oscillator. An output voltage is thus obtained proportional to the phase difference between these two signals and this output voltage is applied to a push-pull D.C. amplifier controlling the clutches, Fig. 7 (not shown).
Patent GB-573175-A (GB)
Title: Improvements in or relating to the manufacture of unsaturated organic compounds
IPC: C08F2/38
Filed: 1943-01-22
Abstract: Methacrylic acid and its derivatives such as the esters, amide and nitrile are protected against polymerization during their production or distillation by intimate contact with air or oxygen while at temperatures at which polymerization would otherwise occur.  Air or oxygen may be bubbled through the liquid or introduced into the vapour.  A known inhibitor such as pyrogallol or hydroquinone may be added in small quantity.  Examples describe the production from acetone cyanhydrin of methacrylic esters and methacrylic acid.  The Provisional Specification states that oxygen is effective for preventing the polymerization at ordinary temperature.
Patent GB-1246741-A (GB)
Title: An injection moulding machine
IPC: B29C45/06
Filed: 1969-01-08
Abstract: 1,246,741. Injection moulding apparatus. BRITISH BATA SHOE CO. Ltd. 8 Jan., 1969 [12 Jan., 1968], No. 1137/69. Heading B5A. In an injection moulding machine, particularly for footwear, and comprising at least one injection unit 10 co-operating with a plurality of moulds 4 supported on a rotary table 3, the or each injection unit 10 is mounted on a reciprocable carriage 2, and a clamping press 11 rigidly mounted on the or each carriage is arranged to engage and close each mould during injection. The movements of the carriage 2 are synchronized with rotation of the table 3. The clamping press comprises hydraulic jacks 16, 17, 18 (Fig. 4) bearing on the sides, top and bottom of a mould located in a space 15. The table is rotated intermittently by mechanism comprising a connecting-rod 5, crank 6, worm and pinion reduction gear 7, actuator 8 and a maltese cross 9.
Patent GB-877946-A (GB)
Title: Electric lamp holder and connector device
IPC: F21S4/00
Filed: 1959-01-12
Abstract: 877,946. Lamp holders. NOMA ELECTRIC CO. Ltd., and CAPEL, F. E. Jan. 12, 1959, No. 1144/59. Class 38 (1). A holder for capless electric lamps comprises a lamp-receiving cap 3 that fits frictionally in one end of a tubular member 9 having a restricted opening at the other end for passage of conductor wires F, the cap having holes 5 to locate the lamp terminal wires 1, which are bent radially outwards and over the outer surface of the cap so as to engage the conductor wires, or brass contacts 21 thereon, when the cap and lamp are inserted. A wedge-fitting plug 10 with grooves 11, 11<1> locates the wires F and contacts 21 in the tubular member 9. Alternatively, the tubular member may have internal integral ribs to separate the wires and provide compartments for contacts of arcuate strip form (Fig. 5, not shown). To improve inter-engagement between the cap 3, member 9 and the contacts, the cap may have bored legs to take the lamp wires and straddle the ribs (Fig. 9, not shown). The cap and tubular member are of conductive, e.g. plastics, material.
Patent GB-235796-A (GB)
Title: Improvements in barrettes
IPC: A45D8/24
Filed: 1925-01-14
Abstract: 235,796. Bechtold, W. S. Sept. 10, 1924, [Convention date]. Hair slides. - A hair slide or barette is provided with two rows of teeth at an angle to each other, the teeth of one row being staggered in relation to those of the other row, and a semi - rigid tongue pivoted and provided with locking means so as to be capable of being locked in position between the two rows of teeth. The slide comprises a curved base 10, provided with a catch 11 and a hinge 12 to which is pivotally attached a tongue 13. Secured to the inner side of the base 10 its an angular member having its edges serrated or toothed so that the teeth 16 on one edge are staggered with respect to those on the other edge. The teeth are disposed at such an angle that when the device is locked the tongue 13 lies between the teeth and the hair is firmly held.
Patent GB-544830-A (GB)
Title: Improvements in or relating to register control apparatus for maintaining the operation of a rotating element on a travelling web in register with any prior conditioningof said web
IPC: B41F13/02
Filed: 1941-01-29
Abstract: 544,830. Automatic control systems for multi-colour printing. CHAMPLAIN CORPORATION. Jan. 29, 1941, No. 1188. Convention date, Feb. 27, 1940. [Class 38 (iv)] [Also in Group XL] . Registration -control apparatus maintaining the operation of an element on a travelling web in register with any prior conditioning of the web comprises light-sensitive electrical means controlled in accordance with the pre-conditioned portion and other light-sensitive means controlled in accordance with one limit of tolerance and the position of the element and a device for indicating the need for, or performing, a correction when the error in register exceeds the limit of tolerances. Preferably photo-cells produce impulses which co-operate in the control of the anode current of a single space discharge device. Marks 14, printed by a cylinder 13, passing in front of a light beam cause a photo-electric cell 38, or the like, and amplifying valves 61, 62 to produce voltage variations simultaneously in the grids 65A, 65B of valves 65, 66. A member 45 in apparatus 111 having slots 46, 47 defining both tolerance limits is rotated in step with a second printing cylinder 17 to admit light to photo cells 50, 51 respectively whereby amplifiers 102, 109 are caused to produce voltage variations on grids 65B, 66B normally before and after the variations on the grids 65A, 66A. When the tolerance limit is passed in either direction the appropriate valve 65, 66 receives corresponding and simultaneous voltage changes on both grids whereby it passes current to energize a relay 75 or 80 energizing a capacitor motor 27 in a direction causing longitudinal movement of a worm 22 to correct the registration of the cylinder 17. The limits of tolerance may be adjusted by circumferential movement of the cells 50, 51 in relation to the slots 46, 47 and the construction of the register control apparatus 111 provides facility for jointly adjusting their optical systems in the same and in opposite directions. The relays 75, 80 also operate upon the grid circuit of a valve 85 so as to energize a relay 84 to open the plate circuit and the valves 65, 66 to stop the correcting movement of the motor after a time interval determined by adjustment of resistances 90, 92 in the circuit of a condenser 97 in the grid circuit of valve 85. Lamps 70, 79 indicate incorrect registration. When the colour of the registration work 14 is yellow a photo cell having a rubidium surfaced cathode in a bulb of lime glass is used in association with an optical filter transmitting the blue end of the spectrum predominantly.
Patent GB-488166-A (GB)
Title: Cages for ball bearings
IPC: F16C33/44
Filed: 1938-01-13
Abstract: 488,166. High-speed noiseless ballbearing cages. HOFFMANN MANUFACTURING CO., Ltd. Jan. 13, 1938, No. 1192. Convention date, May 22, 1937. [Class 12 (i)] A noiseless ball-bearing cage for high-speed usage made of a synthetic resinous product comprises a main part 13a with projecting arms 14 against which an annular end plate 20 is fixed by screws passing through holes 21 and 12. The arms 14 are of length equal to the diameter of the balls to be used, and surfaces 13 and end plate 20 are plane giving two point contact only between them and the balls. Sides 18 and 19 of the arms are slightly less curved than the balls, a slight clearance being given the latter and thus one point contact only with either of the sides. End plate 20, being thin, yields resiliently, without undue friction arising, to any ball that may be slightly too large. Specification 411,359 is referred to.
Patent GB-591283-A (GB)
Title: Process for the preparation of sulfides of alkylated phenols
Filed: 1945-01-15
Abstract: Alkylated monohydroxy phenol sulphides are prepared by alkylating a phenol with an olefine in the presence of a boron halide catalyst, dissolving the reaction product containing the catalyst in an organic solvent and treating the solution with a sulphur halide.  In addition to the monohydroxy phenols as starting materials there may also be used high molecular weight alkylated phenols prepared by condensing phenols with chlorinated petrolatum or chlorinated paraffin wax or with a chlorinated kerosene or gas oil.  The alkylation is preferably carried out by first adding the boron halide catalyst to the phenol and then introducing the olefine.  This is stated to avoid sludge formation.  As olefines there may be used individual olefines or mixtures derived from petroleum and refining gases.  The preferred catalysts are boron trifluoride and combinations of boron trifluoride with water and with phosphoric acid.  For the sulphurization the preferred reagents are sulphur chloride in a petroleum naphtha solvent.  An example is included in which tertiaryoctyl phenol is produced by the reaction of diisobutylene on phenol and the product sulphurized with sulphur chloride in a petroleum naphtha solvent.
Patent GB-1282263-A (GB)
Title: Purification of aluminium
Inventor: HARDING JOHN VINEY
IPC: C22B21/06
Filed: 1970-01-09
Abstract: 1282263 Refining molten Al or Al alloys BRITISH OXYGEN CO Ltd 22 Dec 1970 [9 Jan 1970] 1217/70 Heading C7D A gas mixture containing 0À5-20% vol. chlorine and at least one of argon or helium is passed into molten Al or an alloy containing more than 50% wt. Al to remove hydrogen and metal oxide inclusions. The gas may be introduced into the melt before casting via a lance or a porous plug at the end of a metal tube or fixed in the wall of the melt container. In an example a gas mixture containing argon and 5% vol. chlorine was bubbled at 57_1/min for 30 minutes through 1050 Kg of molten Al alloy containing 0.3 cc. hydrogen/100 gms, 0.75% wt. Mg, 4.3% wt. Cu and 0À8% wt. Si. The hydrogen content was reduced to 0À1 cc. /100 gms.
Patent GB-283588-A (GB)
Title: Warm-water-container for dental purposes
IPC: B67D3/00
Filed: 1928-01-13
Abstract: 283,588. Kaufmann, B. Jan. 13, 1928. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 16, 1928]. Discharge devices.-Apparatus rendering available a supply of hot water at constant temperature for use by dentists comprises a vacuum jacketed bottle 12, Fig. 8, provided with a stopper 11 having a U-shaped passage 11<a> forming a seal and providing a reservoir from which warm water may be drawn by a syringe. Air may be admitted to the bottle to replace the withdrawn water through the passage 11<a>, in which case the bottle is supported in an oblique position and the passage 11<a> is made oblique with respect to the bottle. Alternatively the bottle may be supported vertically and air may be admitted through a tube 16 controlled by a floating valve 17. The passage 11<a> may comprise a vacuumjacketed tube and the stopper 11 may be of heatinsulating material.
Patent GB-763761-A (GB)
Title: Coaxial electric cables and methods of making same
IPC: H01B3/44
Filed: 1955-01-14
Abstract: 763,761. Cables. STANDARD TELEPHONES & CABLES, Ltd. Jan. 14, 1955 [Jan. 19, 1954], No. 1255/55. Class 36. A coaxial cable comprises an inner solid or stranded conductor 1, a semi-conductive layer 2 in contact therewith, an insulating layer 3 of polytetrafluoroethylene, a semi-conductive layer 4 and an outer conductor 5 in contact therewith, the semi-conductive layers being composed of a homogeneous mixture of polytetrafluoroethylene and finely-divided carbon. An additional conductive braid 7, insulating layer 8 and screening braid 9 may be applied beneath an outer elastomeric jacket 6. The layers 2 and 4 are applied by dip-coating, using an aqueous suspension of graphite and polytetrafluoroethylene in which the graphite preferably comprises from 15-60 per cent by weight of the total solids content. The coated wire is passed through an oven after each passage through the suspension. The insulating layer 3 is applied by extrusion, using a pasty composition of polytetrafluoroethylene and a low-boiling mineral oil or naphtha, the liquid being vaporized before sintering the polytetrafluoroethylene. Specification 739,962 is referred to.
Patent GB-492497-A (GB)
Title: Method for weaving blankets and like woven fabrics
IPC: D03D11/00
Filed: 1938-01-14
Abstract: 492,497. Double fabrics &c. NAAMLOOZE VENNOOTSCHAP WOLINDUSTRIE VOORHEEN J. REGOUT & CO., and REGOUT, J. W. M. H. Jan. 14, 1938, No. 1308. [Class 142 (iv)] A blanket, rug, plaid or carpet fabric comprises two surface layers the respective warp threads k<1>, k<2> of which interweave with weft threads a, b, c, but do not interchange, the layers being connected at intervals by the weft threads. as shown, which in parts are arranged in pocket like spaces between the layers. Extra filling threads may be arranged in the space between the layers, weft-wise or warp-wise or both. Some threads may be used to produce infrequently occurring parts of the pattern such as lines or spots. In a modification, the upper surface layer may comprise warp threads k<1>, k<2>. Fig. 4, interchanged between the centre and surface as shown, parts of the threads k<3> being arranged in the pocket like spaces referred to. One or more similar series of extra warp threads may be associated with the lower surface layer, the layers being interconnected in each case by wefts. The threads may be of various colours to produce patterns and 'the threads may be carded. Specification 2964/88, [Class 142], is referred to.
Patent GB-575476-A (GB)
Title: Improvements in or relating to priming compositions adapted for igniting chemical heating compositions, and to chemical immersion heaters containing said priming and heating compositions in association with one another
IPC: C09K5/16
Filed: 1943-01-27
Abstract: 575,476. Primers for chemical heating compositions. GILLIES, J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 27, 1943, No. 1369. [Class 9 (ii)] A priming composition for use in igniting chemical heating compositions comprises calcium silicide and cupric oxide, but is free from lead or its compounds. The cupric oxide'may be the pure chemical compound, or the incompletely oxidized black copper oxides of commerce provided they contain not more than 5.5 parts of copper in association with each part of oxygen, but the hydrated forms of copper oxide are excluded. The composition may contain a diluent such as china clay or red ochre, and may be used in the compressed condition. The composition may be ignited by (a) a combustible train terminating in a bead comprising calcium silicide, red lead and nitrocellulose (as binding agent), or (b) a bead made from the composition itself plus nitrocellulose as a binder, and may be used in combination with a heating composition comprising (1) calcium silicide, hammerscale and china clay, or (2) calcium silicide, iron oxide and aluminium, or (3) silicon, hammerscale, aluminium and calcium silicide (see Specification 575,475, [Group XIII]). Specification. 575,506 also is referred to.
Patent GB-887438-A (GB)
Title: Improvements in or relating to mattresses and other interior spring filled articles
Inventor: BROCKENSHAW HARVEY
IPC: A47C27/05
Filed: 1958-01-15
Abstract: 887,438. Spring mattresses. RELYON RESEARCH (WELLINGTON) Ltd. Jan. 15, 1959 [Jan. 15, 1958], No. 1398/58. Class 52(4) A spring assembly 1 supports a layer or layers 2, 3 of foamed synthetic resin, preferably polyurethane, on which is placed a further layer of bonded synthetic fibres, preferably cellulose acetate. When two layers of foamed material are used the underside of the upper layer 3 may be corrugated. Specification 887,439 is referred to.
Patent GB-804934-A (GB)
Title: Interlocking arrangement between a stepping switch and a cyclically operable device
IPC: H01H67/06
Filed: 1957-01-15
Abstract: 804,934. Switching systems. NATIONAL CASH REGISTER CO. Jan. 15, 1957 [Jan. 27, 1956], No. 1466/57. Class 38 (4). [Also in Group XIX] In apparatus in which a stepping switch controls the repeated operation of a cyclicallyoperating device, alternate contacts, e.g. 180, 182, of one level of the stepping switch are connected to either side 177, 176 of a change-over switch 161 in circuit with the stepping switch magnet SS1 and with means L9 for initiating the cycles of operation of the device, and the change-over switch is operated by the device so as to ensure that the latter operates in step with the stepping switch. The invention is applied to the arrangement described in Specification 779,005, [Group XIX], in which a known punch operates through a series of cycles to punch, in sequence, characters set up in a cash register. Initially, a circuit is prepared through the stepping switch wiper 179, lead 174 and the switch 161 to a solenoid L9 controlling a one-revolution clutch for the punch. This circuit is completed when contacts SC7a1 are closed in known manner on the selection of one or more punches and consequently a punch cycle is initiated. At 90 degrees in this cycle, contacts SC6bc1 are opened and contacts SC6ac1 are closed. The clutch solenoid L9 is thus de-energized and the stepping switch magnet SS1 is energized. Self-interrupting contacts SS1b1 open and the stepping switch advances at 230 degrees in the cycle, the contacts SC6bc1 and SC6ac1 are restored, and at 240 degrees the change-over switch 161 is operated by a cam 159 driven through a 1: 1 reduction gear from the punch cam-shaft 118. Only when the switch 161 changes over can the circuit from the stepping switch wiper 179 (now on contact 182) be completed-on this occasion over lead 175. Thus the clutch magnet L9 cannot be re-energized prematurely and yet will be re-energized in time to prevent the temporary arrest of the punch cam-shaft 118. Advance of the stepping switch is likewise prevented until a chosen point in the punch cycle. If the stepping switch and punch become out of phase, due, e.g., to the return of the stepping switch to its initial position after an odd number of cycles of the punch, a switch or relay is operated to open contacts R1bc1 and Rlbc2 and to close contacts R1ac1 and R1ac2.
Patent GB-509765-A (GB)
Title: Improvements in or relating to coin-freed game apparatus
IPC: G07F17/34
Filed: 1938-01-17
Abstract: 509,765. Coin-freed game apparatus. PETER, R., BIAL, H., and STEIN, A. Jan. 17, 1938, No. 1479. [Class 27] [Also in Group XV] Coin-freed prize-delivering apparatus for playing a game simulating roulette comprises a coin-freed numbered rotatable disc S, a disc R coupled to the disc S and having apertures or contacts 23 in the central circular area R<1> and in the outer annular areas R<2>-R<5>, and knobs 15 acting in conjunction with pointers and dials n<1>-n<5 >for moving, through levers 16, levers 18 having pins 21 into selected positions relaytive to the areas R<1>-R<5>, prizes being, delivered if the disc R comes to rest with an aperture or contact 23 opposite a projection 21. A coin, is inserted in one of the slots a<1>-a<5> dependent upon the selected mode of playing and passes down a shoot 1 to a coin container moving the lever 3 to liberate from the lug 5 the lever 8 which is moved downwards by the spring 7 to actuate the rod 10 and Maltese-cross prizedelivering mechanism 11-13 if the pin 9 on the arm 22 has been moved out of the path of the lever 8. The latter condition is obtained if when the disc R comes to rest an aperture or contact 23 is opposite a projection 21 so that it can be moved into engagement therewith by the action of a cam 19, the arm 22 carrying the pin 9 being simultaneously moved either by means of a suitable connection 17 between the lover 18 and the arm 22 or through a relay.
Patent GB-494329-A (GB)
Title: Improvements in or relating to electron multipliers
IPC: H01J43/04
Filed: 1937-01-20
Abstract: 494,329. Electron multipliers. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Jan. 20, 1937, No. 1731. Void. Convention date, Jan. 21, 1936. [Class 39 (i)] Electrons from a cathode K are accelerated by cathodes G<1> .. G<4> formed as grids or diaphragms and emitting secondary electrons and the stream is collected by an anode A. The electrons are focused by electrodes or a magnetic field. The stream may be modulated by a grid G<1> .. G<4> or by separate grids screened from the grids G<1> .. G<4> by further grids. The cathode K may be photo-electric and illuminated from the front or rear and may be planar or curved and inclined or perpendicular to the axis of the tube. The output circuit may be connected to a grid instead of to the anode.