baber/WOPTO huggingface dataset:
Patent GB-973409-A (GB)
Title: Improvements in or relating to apparatus for use with power circuits and transmission lines
Inventor: MATTHEWS PAUL
IPC: H01F38/30
Filed: 1959-09-04
Abstract: 973,409. Transformers. HIGH VOLTAGE ACCESSORIES Ltd. Dec. 1, 1960 [Sept. 4, 1959], No. 30225/59. Heading H1T. A combined capacitor and current transformer comprises a primary high-voltage conductor 1 (which may include a " line trap" inductance 2) secured by a metal support 4 and an insulating support 5 within a tubular electrode 3. The outer concentric tubular electrode 6 of the capacitor is separated from the electrode 3 by moulded insulation 11, e.g. of polythene, polystyrene or epoxide resin, and carries thereon one or more secondary air-cored windings 7-10 which are encapsulated by the moulded insulation. Instead of the insulation being ribbed at 12, porcelain conical end caps 30, Fig. 2, may be provided therefor and bolted to the outer electrode 26.
Patent GB-602952-A (GB)
Title: Improvements in separating pneumatic tyres from the wheels of aircraft and other vehicles
IPC: B60C25/132
Filed: 1945-11-13
Abstract: 602,952. Wheel tyres. DUNLOP RUBBER CO., Ltd., DAW, R. F., and FLETCHER, H. R. Nov. 13, 1945, No. 30261. [Class 144 (i)] For forcibly freeing the beads of a pneumatic tyre from the fixed and detachable flange seatings, the complete wheel and (deflated) tyre is laid on a base-plate 6 having spaced rings 1, 2 adapted respectively to support the wheel inwardly of the detachable flange and the adjacent side-wall of the tyre. The upper bead 19 is then forced clear of the fixed flange 14 by means of a ring 12, Fig. 1, which is actuated by a nut 17 threaded on a spindle 7. The ring 12 is then removed, and the wheel body and air-tube 21 withdrawn from the tyre, which is now supported solely on the ring 2. A second forcing-ring 13, Fig. 2, is then assembled on the spindle 7 to engage the inner edge of the flange 15 to free the latter from its associated bead 20.
Patent GB-765977-A (GB)
Title: Improvements in or relating to luminescent substances
IPC: C09K11/74
Filed: 1954-10-20
Abstract: 765,977. Luminescent &c., materials &c. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 20, 1954 [Oct. 22, 1953], No. 30279/54. Drawings to Specification. Class 39(1). A luminescent material, particularly for a high-pressure mercury vapour discharge tube, contains mainly a magnesium lithium arsenate activated by manganese, satisfying the formula xMgO.yLi2O.zAs2O5 : pMn, wherein (x + 2y): z is 6 : 1, y : z lies between 0À1 and 1À0 and is preferably 0À4, and p : z lies between 0À001 and 0À1 and is preferably 0À01. The material is excited by radiation of 2537Š and 3650Š to emit radiation having a maximum between 6300Š and 6700Š. The material is prepared by firing at a temperature of more than 500‹C., e.g. of about 1100‹ or 1200‹C. in air or oxygen for about 3 or 16 hours a mixture of magnesium containing compounds, e.g. MgO lithium containing compounds, e.g. Li2CO3, arsenic containing compounds, e.g. HszOs or As2O3 with H2O2, and manganese containing compounds, e.g. MnCOs. The firing can be performed in the presence of a fluorine or boron containing flux, e.g. MgF2 or B2O3. The mixture can be prefired at about 600‹C. for one to ten hours in air or oxygen. The material can be applied to the wall of a discharge tube, to the inner side of a glass bulb surrounding a high pressure mercury vapour discharge tube, to a reflector, to the knob of a radio apparatus or to the pointer of a measuring instrument. In references to prior art compounds Mg3As2O8 and Mg6As2O11 are referred to.
Patent GB-978548-A (GB)
Title: Thermal insulation
IPC: B29B7/76
Filed: 1963-07-31
Abstract: 978,548. Refrigerator cabinets. GENERAL MOTORS CORPORATION. July 31, 1963. [Aug. 31, 1962], No. 30368/63. Heading F4H. [Also in Division B1] In apparatus for mixing the components of a polyurethane insulating foam the mixture is discharged on to a rotary flinger by which it may be distributed in a confined space. As shown, the components are supplied by proportioning pumps 66, 68 to a valve block 78 having valves 80, 82 operated in unison by a handle 84 to recirculate the components or to deliver them to a mixing chamber 96. The components are mixed by pin stirrers 137, 139 rotated by a shaft 133 which also carries at the mixing chamber outlet a rotary flinger disc 38; this may be inserted through an aperture 36 into a confined space 32, such as the hollow wall of a refrigerator cabinet, which is to be filled with insulating foam. The flinger is surrounded by a spring-loaded guard ring 141 which is retracted by contact with the wall 34 of the space 32 when the flinger is inserted into the aperture 36 (see also Fig. 3, not shown). The stirrers and flinger are rotated at 18,000 r.p.m. by the motor 135.
Patent GB-1438275-A (GB)
Title: Fluid control valves
IPC: F16K11/074
Filed: 1972-06-29
Abstract: 1438275 Valves SANDALL PRECISION CO Ltd 28 June 1973 [29 June 1972] 30476/72 Heading F2V A distributor valve comprises a rotatable disc 15 having a central bore 21a, annular grooves 22a, 23a, channels 21b (22b and 23b, Fig. not shown) and bores 21c (22c, 23c) which are connected to any one of eight corresponding sets of bores 21d, 22d, 23d in the body of the valve, the body also having a bore 21 to correspond with bore 21a in the disc, and bores 22 and 23 which connect to the annular grooves (22a, 23a). Thus, in one position of the disc, fluid may enter bore 21, pass to bore 21a, channel 21b, bore 21c and exit at bore 21d to, e.g. a fluid motor, the return connection being made through bores 22d (22c), channel (22b), groove 22a and bore 22. Different fluid apparatus can be connected to each set of bores, utilizing a second fluid inlet 23 is necessary. The disc 15 is biased upwardly away from the sealing faces by a spring 19, and downwardly by fluid pressure acting in a chamber 46. The biasing fluid is admitted via a manually operated spool valve 33. To alter the connections through the disc the spool valve is first actuated to exhaust the chamber 46, the spring 19 biasing the disc upwardly so that it is easily rotatable on bearings 20. When the new connections are made, the spool is actuated to admit fluid pressure to the chamber 46. A detent 27 locates the disc 15 in its various angular positions. Electric contacts 26 are used to indicate the particular positions of the disc.
Patent GB-239413-A (GB)
Title: Improvements in and connected with stretching, tentering, spreading and like machines for the finishing or treatment of fabrics
IPC: D06C3/04
Filed: 1924-12-18
Abstract: 239,413. Schmitt, E. Dec. 18, 1924. Drawings to Specification. Stretching, tentering, spreading, and producing elasticity. - Chain links, tentering clips, pin blocks, and other parts of fabric-finishing machines subject to wear or to the action of moisture, lyes, &c., are coated entirely or partly with chromium. The parts may be constructed of an inferior metal such as iron.
Patent GB-999213-A (GB)
Title: A process for the production of metallic copper powder and ammonium sulfate from copper sulfate solutions
IPC: B22F9/20
Filed: 1963-08-01
Abstract: A process for the production of metallic copper comprises the steps of (1) adding ammonia to a solution of copper sulphate to obtain a cupric ammonium sulphate complex solution, (2) treating this solution with sulphur dioxide to give a crystalline precipitate and (3) treating the solid from step 21 with sulphuric acid to form copper or with oxygen while heating to give copper oxide and copper. By-products from the process include (NH4)2SO4, CuSO4 and SO2.  In the second alternative for step (3) the copper oxide may be removed by treatment with sulphuric acid to leave the metallic copper.  The product of step (2) is said to contain equal mole quantities of copper, nitrogen and sulphur.ALSO:A process for the production of metallic copper comprises the steps of (1) adding ammonia to a copper sulphate solution to give a cupric ammonium sulphate complex solution, (2) this solution is then treated with sulphur dioxide to give a crystalline precipitate, and (3) treating the solid from (2) with sulphuric acid to form copper or with oxygen while heating to form copper and copper oxide.  By-products from the process include (NH4)2SO4, CuSO4 and SO4.  In the second alternative for step (3) the copper oxide may be removed by treatment with sulphuric acid to leave the metallic copper.  The product of step (2) is said to contain equal mole quantities of copper nitrogen and sulphur.
Patent GB-238123-A (GB)
Title: Improvements in thermionic triodes
IPC: H01J19/30
Filed: 1924-12-18
Abstract: 238,123. General Electric Co., Ltd., and Smithells, C. J. Dec. 18, 1924. Vacuum tubes.-In a thermionic valve operating with grid rectification and a filament voltage of less than 2.5 volts, the surface of the grid consists of a highly electropositive metal such as magnesium. The filament may consist of thoriated tungsten or of alkaline earths. A piece of magnesium may be attached to the outside of the anode and heated during the exhaustion process by electronic bombardment or by high-frequency induced currents; another piece of magnesium may be attached to the inside of the anode and evaporated in the same way, so as to form a deposit on the grid. Specifications 202,300, 214,262, and 225,234, are referred to.
Patent GB-1465095-A (GB)
Title: Gold- or gold alloy-coated chromium-base alloy articles
IPC: C25D5/50
Filed: 1975-07-04
Abstract: 1465095 Chromium based alloys; electroplating gold; electrlytic cleaning; gold diffusion alloy FULMER RESEARCH INSTITUTE Ltd 4 July 1975 [10 July 1974] 30555/74 Headings C7A C7B and C7D A Cr-base alloy article containing at least 90 wt per cent Cr with one or more of Nb, Ta, Hf, Zr, Ti, Mo and W and a lesser proportion of one or more of C, N, B and Si alloying components (and optionally containing Y, Ce and/or rare earths) has bonded thereto a coating at least 15Ám thick of Au or an alloy thereof containing at least 50% Au and one or more of the following alloying elements up to the maximum wt. % stated in parenthesis Pd (30%), Pt (50%), Rh (5%), Ti (12%), V (10%) and/or Ni (38%). The Au may be applied electrolessly or electrolytically, and should be subsequently heated to diffusion-bond it to the substrate. The Au alloying elements may either be codeposited or subsequently applied, in which case the double layer is heated to form the alloy by diffusion. In examples the Cr alloy contains the following components, the balance being Cr:(1) 2À33% Ta, 0À12% C; (2) 1% Zr, 0À2% B, 1À2% Y, and 1% Ce. The alloy is cleaned mechanically and with organic and acidic agents, cathodically cleaned in the bath specified below, cathodically activated in HCl and plated in an acid cyanide Au bath twice. The coating provides protection from nitriding to gas turbine components. The cathodic cleaning bath contains Na 2 Co 3 , NaOH, Na 3 PO 4 , EDTA, Na 2 SiO 3 , benzoic acid and a commercial surfactant.
Patent GB-1425694-A (GB)
Title: Recorder checking device
IPC: G07C5/12
Filed: 1974-07-10
Abstract: 1425694 Recording apparatus KIENZLE APPARATE GmbH 10 July 1974 [21 July 1973]  30602/74 Heading G1J A vehicle tachograph with one or more record medium carriers 13 driven by a clock mechanism, and a spring-mounted stylus 8 or 20 movable perpendicularly of the carrier 13, has a switch associated with the record carrier 13 and/or the stylus to control an impulse transmitter 4 to produce a visual or audible warning when the tachograph is not functional, e.g. if there is no record medium 12 present, or the stylus has jammed clear of the record medium, or the lid of the tachograph is not properly closed, or the power supply to a motor 45 which oscillates the stylus to produce a bar diagram is interrupted. In Fig. 1, a switch 3 is closed when a pre-set vehicle speed is exceeded, to light a warning lamp 2. The impulse transmitter 4 causes this lamp 2 to flash when the tachograph is not functional. A normally open switch 5 closes if the stylus 8 drops into a recess 14 in the carrier 13 due to the absence of a record medium (disc) 12, or if the stylus is jammed in a retracted position, or if the lid of the tachograph is not properly closed so that the stylus support arm 9 is too far from the carrier 13. A support plate 18 for a second record medium 18 carries a conducting bridge 19 which is contacted by spring contacts 17, 16 of a switch 6 in the carrier 13 if the second record medium 18 is absent. In Fig. 2, an arm 25 on the stylus 20 actuates the contacts of a switch 27 if the record medium 12 is absent. In Fig. 3 (not shown), the stylus carries an insulated bridge contact (32) engageable with contact strips (30, 31) along the sides of the recess (14) if the stylus drops into the recess. A modification Fig. 4 (not shown) uses two wires (34, 35) in the recess (14) instead of the strips. In a further form Fig. 5 (not shown) the stylus has an insulated support, and can engage a contact brush (37) in the bottom of the recess (14). In Fig. 6, the pulse transmitter 4 is energized if the motor 45 for oscillating the stylus is deenergized, via a sensing circuit having a capacitor 44, resistor 42, diode 43, resistor 40, capacitor 41, and transistors 38, 39. Capacitive, inductive, or photo-electric switching may be used.
Patent GB-958402-A (GB)
Title: Digital-analogue comparator
IPC: H03M1/00
Filed: 1960-09-06
Abstract: 958, 402. Electric selective signalling systems. UNITED AIRCRAFT CORPORATION. Sept. 6,1960 [Sept. 28, 1959], No. 30631/60. Heading G4H. A comparator comprising a coded scale and an array of transistor gates produces an output signal when the position of an angularly displaceable shaft agrees with a digital signal comprising a combination of binary markings applied to a set of leads. As described the bits of the digital signal are applied in true and inverse form to terminals 10, 20, 30, 40 and 10a, 20a, 30a, 40a respectively, and the rotatable shaft positions a coded scale having four tracks 14, 24, 34, 44 shown in developed form. Each track, except the least significant track 44, comprises two interlinked tracks of conductive material, e.g. 14, 14a, deposited on a non-conductive base, and is associated with four sensing brushes, indicated by heavy dots, e.g. 13, 13a, 15, 15a. In operation each input bit of the digital signal opens one of a pair of gates to effect a coupling between the neighbouring tracks. For example the bit applied to terminals 20 and 20a (in true and inverse form) opens one of gates 22, 22a, thereby coupling brush 15 or 15a with brush 23 or 23a. Also the circuit is so arranged that when the input digital signal agrees with the shaft position (which is position 7 as shown) then a low impedance path exists from a positive terminal 1 to an output terminal 48, whereas if there is disagreement then there is no low impedance path and hence no output signal. In a second embodiment (Fig. 2 not shown) the path begins at the track of least significance rather than at the track of most significance as in Fig. 1. Specification 819,252 is referred to.
Patent GB-500716-A (GB)
Title: Method of colour processing a colour photographic element
IPC: G03C1/815
Filed: 1937-05-10
Abstract: 500,716. Electric signalling systems. SPERRY GYROSCOPE CO., Ltd., HARDING, W. G., and NISBET, R. H. Mav 7. 1937. No. 37101/38. Divided out of 498,738. [Class 40 (i)] A system for transmitting indications from an indicator, such as the sensitive element of a gyro-compass, comprises parts 101 and 102 of a twopart controller mounted on a sensitive element 99 and a follow-up member 100 respectively, and causing a servomotor 104 to rotate an electrical transmitter 111, the signals from which are amplified by means of a constantly running generator 115 described, in Specification 500,714, the field windings of the generator being excited by the signals. Specifications 360,428, [Group XXXVII], and 417,995 describe suitable arrangements for controlling the servomotor. The amplified signals are transmitted over lines 116, 117, and 118 to receivers, one, 119 of which drives the follow-up member. The receivers in this example are of the selsyn type and the transmitter is a circular potentiometer supplied with A.C. Devices which may be used in such a system for correcting the follow-up element of the gyro-compass for the " North-steaming error are described in Specifications 433,494 and 461,424, [both in Group XX].
Patent GB-1369213-A (GB)
Title: Disc dispensing apparatus
IPC: G07D9/00
Filed: 1971-06-30
Abstract: 1369213 Discharging hoppers J G WILLIAMS and P J GRIFFITHS 26 June 1972 [30 June 1971 27 Nov 1971] 30732/71 and 55148/71 Heading B8S [Also in Division G4] A device for dispensing discs, particularly coins, see Divisions G4-G6, comprises relatively rotatable plates 7, 11, the upper plate having a disc receiving hole and the lower plate a disc receiving recess 18 which receives a disc from the hole 14 during initial relative rotation of the plates, a projection 16 on the upper plate ejecting the disc from the recess on continued relative rotation of the plates. In the embodiment shown the lower plate has a surface 29 for supporting a disc in the hole 14 until it is in register with the recess 18, the projection 16 running in a groove 17 in the surface 29. The upper plate is provided with six holes 14 and six projections 16 (see Fig. 2, not shown) and is driven in rotation by an electric motor 13. The discs are dispensed through a slot 22 in a side wall of hopper 2. The plates may be horizontal rather than inclined and a vertical disc storage tube, with its end terminating above upper plate 11, used instead of hopper 2. In Figs. 4 and 5 (not shown) forms of the lower plate are shown with modified shapes of recess 18 to reduce the tendency for discs to jam between the upper plate and walls of the recess. Counting means may be provided to count the discs ejected and to interrupt relative rotation of the plates when a required number of discs have been dispensed.
Patent GB-679812-A (GB)
Title: Drawing-off mechanism for circular knitting machines
IPC: D04B15/88
Filed: 1946-10-16
Abstract: 679,812. Knitting - machines. BATA, NARODNI PODNIK. Oct. 16, 1946 [Feb. 15, 1943], No. 30770/46. Class 74 (ii). A mechanism is adapted to be connected to the take-up mechanism of a circular machine so as to operate the take-up rollers and effect take-up of the fabric during reciprocating knitting, for example, during the knitting of the foot of a stocking. A ratchet wheel 7 is positioned on the end of one of the rollers, which are geared together, and is operated to rotate the rollers by a pawl 8 pivotally attached at one end of a lever 9 which itself is pivoted at 10 to a bracket 3. A pin 11 carries, during rotary knitting, a roller engaging with a cam surface 18 such that as the take-up mechanism revolves the lever 9 is actuated to cause the pawl 8 to rotate the rollers, but during reciprocatory knitting the pin 11 pivotally supports an arm 12 from the end of which extends a rod 14 having a hooked end 15. The take-up mechanism is positioned adjacent the toothed quadrant 21 imparting a reciprocatory motion to the needle cylinder and a pin 30 extends from the quadrant in the path of the rod 14. A spring 31 connected to the arm 12 and the lever 9 retains the rod 14 in engagement with the pin 30. As the quadrant 21 reciprocates about its pivot the rod 14 follows in abutment with the pin 30. The path of the hooked end 15 revolving about the pin 11, however, intersects and passes below the path of the pin 30 on the quadrant such that the pin 30 engages the hooked end 15 raising the arm 12 to cause the pawl 8 to actuate the ratchet 7 and thereby rotate the rollers. When the quadrant returns in the reverse direction the rod 14 remains engaged with the pin 30 under the action of a spring 17 and thereby returns gradually to its initial position. When it is desired to stop take-up of the fabric being knitted, such for example during the knitting of a heel or toe of a stocking, a bell crank lever 36 is operated by a cam 35 on a drum 34 to cause a spring-loaded arm 42 to engage a pin 32 on the arm 12 and prevent movement of the arm 12. If the arm 12 is on its return stroke, it is engaged by a cam surface 43 on the arm 42 and raises the arm 42 against a spring 45 and passes on to another cam surface 44 which retains it in its initial position. The rod 14 may be adjusted in the arm 12 to effect the amount of take-up by the rollers.
Patent GB-1320075-A (GB)
Title: Electroplating
IPC: C25D7/06
Filed: 1971-07-01
Abstract: 1320075 Continuously electro-plating steel strip USUI KOKUSAI SANGYO K K 1 July 1971 [11 July 1970] 30908/71 Heading C7B A steel strip 2 is continuously electro-plated e.g. with Cu on one face only by passing it attracted by and coated with a flexible bandshaped sheet magnet 4 on the other face through an electro-plating solution 7a, e.g. containing copper and potassium pyrophosphate or cyanide and ammonia or KOH, and pulling off the magnet after its discharge from the solution. The sheet magnet e.g. an extruded, magnetized, kneaded mixture of steel or barium ferrite powder and thermoplastic resin, may be drawn from an uncoiler 5a to be applied to attract and coat the strip, and after peeling off, rewound on a recoiler 9a; a tape 11 non-penetrable by the electroplating solution, e.g. of resin or paper, may be interposed, being fed from uncoiler 12a and rewound on recoiler 13a. Alternatively the sheet magnet may be endless Figs.8-11 (not shown) passing in a rotational path partly through the solution. Subsequently, the plated strip may be zinc melt coated.
Patent GB-739401-A (GB)
Title: Improvements relating to electric motors
IPC: G01R31/34
Filed: 1953-11-09
Abstract: 739,401. Frequency converters. BROADBENT & SONS, Ltd., T., and GRIMWOOD, G. L. Oct. 19,1954 [Nov. 9, 1953], No. 30918/53. Class 35. [Also in Group XXXVII] An A.C. motor has an auxiliary winding 5 placed in closed slots in the stator teeth for the purpose of picking up slot-ripple and thus generating A.C. at a frequency depending on the motor speed. The A.C. generated may be used as a signal to perform some operation at a preset speed, e.g. by acting on a circuit set to resonate at a certain frequency or by feeding it into a coil wound on a core which is also magnetized at mains frequency, so that at a certain speed, when the frequencies are equal, a third coil on the core is de-energized and a relay is operated. The invention may be applied to switching off the D.C. braking current of a motor when this is reduced to a slow speed, or taking off a friction brake and energizing the motor at a reduced frequency to sustain it at a lower speed.
Patent GB-356535-A (GB)
IPC: G10K9/12
Filed: 1930-10-16
Abstract: 356,535. Vehicle horns. BOSCH, AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Oct. 16, 1930, No. 30938. Convention date, Nov. 8, 1929. [Class 13.] An electric horn with short sound tube c and front coverplate b is provided with one or more apertures l, m in the plate b to give access to the inner adjustable parts. The plate b is arched outwardly and is made in one piece with the tube c.
Patent GB-739744-A (GB)
Title: Pilot lamp with various uses, but more particularly for automobiles
IPC: H02B15/00
Filed: 1953-11-10
Abstract: 739,744. Indicator lamps. COLOCOLOFF, M., and COLOCOLOFF, [nee STEWART], L. Nov. 10, 1953 [March 6, 1953], No. 31042/53. Classes 75 (3) and 75 (4). A pilot lamp comprises an electric bulb G disposed within a casing D and contact pins E, F which are rigidly secured to the rear wall of the casing and extend outwardly therefrom for engagement in plug sockets. A translucent window I secured to the front of the casing bears letters, signs and designs which may be in relief. The casing and window may be made as an integral body which may be wholly translucent or translucent at parts only ; in this case the casing also may bear letters, signs and designs.