baber/WOPTO huggingface dataset:
Patent GB-1164774-A (GB)
Title: Improvements in Fluid Pressure Signal Converters
IPC: F15B7/08
Filed: 1968-06-17
Abstract: 1,164,774. Fluid digital-to-analogue converters; counters. HONEYWELL Inc. 17 June, 1968 [18 July, 1967], No. 28797/68. Headings G4D and G4P. In a fluid digital-to-analogue converter, a set of pulses representing a number in one number system applied to inlets 41-44 displaces liquid through a channel 12 and into a chamber 25 thus moving an indicator 18, on which there are marked appropriate digits, so that the corresponding number in another number system can be read through a window 37. The displacement is effected by a set of pistons 31-34 of identical cross-section but moving distances in respective chambers 21-24 in proportion to successive powers of the radix of the input number. Thus, in the binary system, the chamber heights are in the ratios 1: 2: 4: 8 as shown. A head of liquid greater than the height of the largest chamber is maintained in the chamber 25 so that the system returns to the " zero " position when the input pulses terminate. In a modification (Fig. 2, not shown), the chamber heights are the same but the distances moved by the pistons are limited by valve members 161-164, 181-184 that engage upper and lower ends respectively of stop pipes 171-174 of different lengths. In a further modification (Fig. 3, not shown), the liquid is expelled into chamber 225 by diaphragms 231- 234 of differing cross-sections but that move the same distance. The connecting channels 212, 213, 214 replace the channel 12 of the previous embodiments.
Patent GB-745860-A (GB)
Title: Improvements in electroluminescent materials
Inventor: RANBY PETER WHITTEN
IPC: H05B33/14
Filed: 1953-10-19
Abstract: 745,860. Electroluminescence. THORN ELECTRICAL INDUSTRIES, Ltd. Oct. 18, 1954 [Oct. 19, 1953], No. 28840/53. Class 39 (1). An electroluminescent material comprises copper and lead activated zinc sulphide containing 0.002-0.5 per cent of combined chlorine and 0.2-5 per cent of potassium by weight. The potassium is added as the sulphate, nitrate, hydroxide, oxalate, carbonate or bicarbonate, its preferred amount being 1 per cent. Copper may be 0.01-0.15 per cent and lead 0.02-2 per cent. The addition of a little zinc oxide is beneficial. Firing at 650-1050‹ C. and reheating in a closed crucible or in nitrogen is preferred, and the material subsequently washed in acetic acid. The material suspended in castor oil or other insulating medium and subjected to an electric field gives a deep blue luminescence.
Patent GB-1372587-A (GB)
Title: Manufacture of insulated electric cables
IPC: B29C48/06
Filed: 1971-06-21
Abstract: 1372587 Extrusion coating of cores BRITISH INSULATED CALLENDERS CABLES Ltd 20 June 1972 [21 June 1971] 28966/71 Addition to 1201528 Heading B5A [Also in Divisions G3 and H1] A further covering layer 22 of material is extruded from an annular die outlet around a covering layer 21 of a different material extruded around an electrical conductor 1, e.g. of sector shape, which is fed through the die along a core tube 15, and the modification of the parent Application comprises preventing the layer 22 from being forced back along the orifice from which the layer 21 extrudes, by maintaining by means of differential pressure control means, a predetermined pressure differential across the layer 22 between a treatment chamber 5 at the die outlet containing fluid medium at super-atmospheric pressure, and the space 17 between the extruding layers into which nitrogen under pressure is injected through a die passage 16. As in the parent Application, the layer 21 may be prevented from being forced back along the core tube 15, by maintaining a predetermined pressure differential of nitrogen, by differential pressure control means, across the layer 21 between the space 17 and the interior of the core tube 15. The layer 21 may be of a semi-conducting material, with the layer 22 being of insulating material, and being extruded with an exterior covering layer 23 material which may be the same as layer 21, or of a different material having a weaker bond to layer 22 to be readily strippable to facilitate joining or terminating. The treatment chamber 5 may contain water coolant for cooling the extruded covering but in the described embodiment, wherein the layers 21, 23 are of the same semiconducting polyethylene and the layer 22 is of insulating polyethylene, the chamber 5 contains steam to effect curing and is downwardly inclined from the die, Fig. 1 (not shown), and also contains cooling water at its lower end, the cable passing from the chamber 5 through further cooling fluid vessels and, via a haul-off unit, to a take-up drum. The differential pressure control means for monitoring the pressure differential across the layer 22, Fig. 3, comprises a differential pressure cell 31 which transmits to a controller 34, via a transducer (not shown), a signal proportional to the pressure difference across layer 22 and which is compared by the controller 34 with a pre-set level to effect, in accordance with the difference between the signal and the pre-set level, the automatic closing or opening of valves (not shown) to respectively effect either injection of nitrogen from a source 36 and through pipe 37 to the passage 16, or release of nitrogen from the passage 16. A vacuum pump 38 is also provided to establish and maintain the predetermined pressure level from the commencement of extrusion when the pressure inside the chamber 5 is atmospheric.
Patent GB-319741-A (GB)
Title: Improvements in or relating to lubricating systems for power engines
IPC: F16N39/00
Filed: 1929-09-24
Abstract: 319,741. Aktiebolaget Separator. Sept. 27, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Liquid level, maintaining.-In an engine or turbine wherein oil in a sump 2, from which the bearings are supplied, is cleaned by being withdrawn therefrom through a pipe 3 and returned thereto by a pump 4 through a separator 5 and a pipe 6, an oil tank 12 is connected to the sump through a float-controlled valve 10 and the sump is provided with an overflow pipe 14, whereby a predetermined level of oil is maintained in the sump. In a modification, the pipe 3 leads from a tank communicating with the sump at a certain level, so that the pump 4 cannot cause the oil in the sump to fall below that level.
Patent GB-1399285-A (GB)
Title: Seat assembly for attachment to an invalid carriage or  supporting frame
IPC: A47C7/46
Filed: 1972-06-21
Abstract: 1399285 Adjustable seats ORTOPEDIA GmbH 21 June 1972 28994/72 Heading A4J [Also in Division B7] In a seat assembly, such as for attachment to an invalid carriage, comprising a back portion 1 with vertically and transversely adjustable side supports 8, a rear support member 9, Fig. 7, is mounted to provide at least one curved deformation of variable extent out of the general plane of the back portion, and the support member is also vertically adjustable relative to the back portion 1. In a preferred embodiment the back rest 1 and foot support 4 are articulated to the seat 2 for pivotal adjustment. Padding, such as leather coated foam is applied to the back rest 1, Fig. 4, which has oblong holes 7 for adjustably securing padded side supports 8. Rounded securing studs 13 have a rectangular region 15 to prevent rotation in an oblong hole 12 of the support 8 when retaining nuts 23 are tightened. The back rest 1 has two holes 29, Fig. 7, of T shape cross-section each having a rectangular nut 31 for receiving a threaded bolt 33 which by rotation causes a pulling or pushing motion to the padding 6 via a reaction block 37 and disc 38 thus providing an adjustable back support. The foot support 4, Fig. 8, comprises a rest 40 having guide rails 43 in which engage guide-members 44, 45 of a sliding extension member 41 one of the guide-members having a screw knob 44a which may be tightened for locking the extension member 41. The foot support 4 is preferably provided with foam padding.
Patent GB-699458-A (GB)
Title: Improvements in warp knitting machines
Inventor: MACAULAY JAMES
IPC: D04B35/10
Filed: 1950-11-28
Abstract: 699,458. Knitting-machines. FINE SPINNERS & DOUBLERS, Ltd. Nov. 27, 1951. [Nov. 28, 1950] No. 29031/50. Class 74 (ii). The bobbin threads which pass round the ways beams of a warp knitting-machine to control the speed o: rotation of the beams also pass through de vices which upon ab sence of the threads or in the event of their breakage actuate the stop motion of the machine. Each thread fed from its bobbin passes between fixed guides a<SP>3</SP> between which a lever is pivotally supported One arm b of the lever has a guide b<SP>3</SP> and i: supported by the thread passing througl this guide. In the event of absence o: breakage of the threac the lever falls freely until a second arm b engages a plate C for ming an electrical con tact thereby completing an electrica circuit causing the stop motion to be operated Spring pressed discs form a tensioning means E which is associated with each device.
Patent GB-418537-A (GB)
Title: Improvements in or relating to electric tumbler switches
IPC: H01R13/70
Filed: 1933-11-24
Abstract: 418,537. Tumbler switches. ALLDAY & SON (1922), Ltd., H., 19, Warstone Lane, and BAIN, R., 25, Beaudesert Road, Handsworth, both in Birmingham. Nov. 24, 1933, No. 29051. [Class 38 (v).] A tumbler switch, particularly for use in a connector for an electrically heated appliance, comprises an insulating dolly 23 and a substantially U-shaped movable contact-member 22 pivoted on a pin 24 which is moulded at one end into one half 11 of the connector casing and has a bearing 25 in the other half 10 of the casing. The base of the contact member 22 is provided with an insulating stud 27 having a prolonged shank 29 which supports one end of a compression spring 26 the other end of which is supported by a raised part 32 of a shoe 30 pivoted at 31 on the inner end of the dolly. The shoe 30 is provided with integral lugs 33 extending along the outside of the spring 26 one of which co-operates with a projection 36 on a fixed member 37 to lever against the spring 26 and shank 29 to open the switch positively. One fixed contact 20 is connected to one of the sockets 14, the other fixed contact 19 being formed by an upturned end of a spring strip 18 to which one of the leads 16 is connected, the other lead being connected directly to the socket 13.
Patent GB-192480-A (GB)
Title: A new or improved combined foot tread and scraper for use on motor road vehicles and the like
IPC: B60R3/04
Filed: 1921-11-02
Abstract: 192,480. Harvey, A. A., Harvey, F., and Clews, H. T., (trading as Clews & Co., H.). Nov. 2, 1921. Mats.-In a combined foot-tread and scraper particularly applicable to the running board of a motor-vehicle of the kind comprising a main frame a of grid-like formation having a number of longitudinal bars a<2> spaced apart by slots a<4> and themselves slotted to receive upwardly-projecting strips of rubber or the like c which are held in place by a secondary frame f, the outer edge of the main frame a is provided with a marginal flange a<1> around its upper edge whereby the frame may be mounted in an aperture b<1> in the running-board b. The rubber strips e are preferably of inverted T-section and the secondary frame f, which is attached to the main frame by screws, is provided with slots f<1> corresponding to the slots a<4> in order to afford a clear passage for dirt through the running-board.
Patent GB-1506644-A (GB)
Title: Cable tie installation tools
IPC: B65B13/02
Filed: 1975-02-28
Abstract: 1506644 Cable tie installation tool PANDUIT CORP 28 Feb 1975 [12 March 1974] 29171/77 Divided out of 1506642 Heading H2C The subject-matter of this Specification is included in parent Specification 1,506,642 but the claims are concerned with the tool member.
Patent GB-706945-A (GB)
Title: Magazine for packet wrapping machines
IPC: B65B41/02
Filed: 1951-12-13
Abstract: 706,945. Feeding packages. FORSTER, L. G. Dec. 13, 1951, No. 29261/51. Class 78 (1) A magazine, Fig. 5, for delivering packages has angle side guides 13 adjustable to and from each other, and a single rear guide 32 adjustable relative to the side guides. The adjustment of side guides 13, Fig. 3, is effected by screw 26 which is operated by knob 27, the two parts of the screw being formed of opposite threads and working in nuts fixed each to a side guide 13, the side guides 13 being resiliently mounted on fixed bar 14 so that they slide therealong to narrow or widen the width of the magazine. Packages are fed to the magazine from the shoot or guide 32 shown as having two adjustable sides, side 52 being secured at 61 and bearing resiliently at 56 against a side guide 13 so as to move therewith, and side 51 being adjustable in slots. Guide 32, Fig. 2, is carried by framework 43-34, the framework being resiliently mounted on fixture 2 at 36 and being displaced by screw 37 operated by knob 38. Specification 645,418 is referred to.
Patent GB-1120843-A (GB)
Title: Invertor control circuits
Inventor: MOSCARDI MICHAEL HENRY
IPC: H02M7/515
Filed: 1965-07-09
Abstract: 1,120,843. Inverting; control of D.C. motors. ENGLISH ELECTRIC CO. Ltd. 6 July, 1966 [9 July, 1965], No. 29328/65. Headings H2F and H2J. [Also in Division G3] A thyristor inverter 4 having D.C. input terminals 5, 6 is automatically controlled to produce at terminal 7 a variable frequency output for application to a load such as an induction motor, the control being such that the output voltage increases and decreases in response to corresponding changes in the frequency. The control circuit includes an integrator 8 constituted by an input resistor R1 and an operational amplifier shunted by a capacitor C1; the integrated output from the inverter 4 is fed over a resistor R2 to a trigger circuit 9, together with a reference waveform from terminal 10, and when the difference between these two inputs exceeds a predetermined magnitude the circuit 9 triggers from one state to the other and produces a series of rectangular pulses which have widths determined by the periods which elapse between the difference signal successively attaining upper and lower trip levels at which the circuit 9 operates. These pulses are applied over an output stage 11, which includes differentiating circuits, and leads 12 and 13, to control the firing of the thyristors in the inverter 4, and the Specification explains with reference to Figs. 2 and 3, (not shown) how this arrangement produces the desired voltage/frequency characteristic. A three phase embodiment in which the load motor (14) itself acts as the integrator 8 is described with reference to Fig. 4 (not shown), this embodiment also having an additional control loop to vary the amplitude of the reference signal in order to compensate for variations in the loading of the motor. In a third embodiment (Fig. 5, not shown) the integration is performed by a small induction motor (19) having similar characteristics to the load motor; alternatively the motor 19 can be replaced by a static circuit possessing the same effective resistance and reactance as the motor.
Patent GB-293640-A (GB)
Abstract: 293,640. Cool, H. R. April 20, 1927. Divided on 294,189. Recording particular operations. -In apparatus for recording the periods of operation or idleness of a machine such as described in Specifications 157,458 and 294,189, a resilient backing 15 pressing on the moving record disc immediately behind the recording stylus is constructed so as always to remain parallel to the record disc. The backing 15 forms the front surface of a thimble 14 resiliently mounted in a recess in the casing 3 of the recorder. The thimble has a flange 16 and slots 17, and is made of resilient material to enable it to be sprung into the recess A tapered spiral spring 18 presses it outwardly.
Patent GB-789189-A (GB)
Title: Improvements in or relating to portable electric tools
IPC: B24B23/02
Filed: 1955-10-14
Abstract: 789,189. Portable grinding tools. DUSS, F. Oct. 14, 1955 [Oct. 30, 1954; May 26, 1955], No. 29409/55. Class 60. [Also in Group XXXV] A portable tool has a rotary tool-member driven by an electric motor surrounded by a housing through which air is caused to flow, to cool the motor, by a rotary vaned member driven by the motor through speed-increasing gearing, the speed of the vaned member being at least equal to that of the tool-member. In one embodiment, Fig. 1, a housing 1 surrounds an electric motor M, which drives through speed-increasing bevel gearing 12, 13 a flexible grinding disc 7 of perlon or nylon incorporating or coated with abrasive particles. A fan 6 mounted on the grinding disc spindle draws air through the hollow rotor shaft 9 of the motor and also through the annular space 28 around the motor ; a shield 5 associated with the grinding disc causes the air to flow around the grinding disc and on to the workpiece. In a modification, Fig. 3, air is drawn around the outside of the motor by a fan 6 driven by the motor through speed-increasing gearing 15, 16. The grinding disc 7 is driven through speed-increasing bevel gearing 12, 13 or it may be driven directly by the motor. The fan may be constructed and positioned so as to force air into the motor housing instead of exhausting it therefrom.
Patent GB-1092283-A (GB)
Title: Improvements in the warming of foodstuffs
IPC: A47J27/16
Filed: 1963-08-15
Abstract: 1,092,283. Cooking by steam. T. B. NELSON. Aug. 12, 1964 [Aug. 15, 1963], No. 29553/65. Divided out of 1,092,282. Heading A4D. [Also in Division F4] A foodstuff is warmed, by passing steam into a saucepan supported on a pedestal, through a hole in a loosely fitting lid thereof. The disclosure is the same as that of the parent Specification (Division F4) and provides details only of a water heating system and the connection to the saucepan lid.
Patent GB-648054-A (GB)
Title: Dominoes and other counters for games
IPC: A63F9/20
Filed: 1948-11-15
Abstract: 648,054. Dominoes ; games counters. SPEAR, J. R. Nov. 15, 1948, No. 29575. [Class 132 (ii)] A games counter e.g. a domino, is built of two pieces, the lower being formed as an open-topped box a having a central boss b and an internally formed top-ledge c and the upper piece being a sheet d resting on the ledge c and boss b. The ledge c may be formed with an acute angle so that the sheet d may be sprung into place. A nail e may hold the sheet in place, or the boss b may be extended to protrude through the sheet b. The box a may include a weight f.
Patent GB-917252-A (GB)
Title: Philatelic mounts and method of making same
IPC: B31D1/00
Filed: 1961-08-17
Abstract: 917,252. Stamp &c. mounts. HATHAWAY, C. T. Aug. 17, 1961 [Oct. 7, 1960], No. 29705/61. Class 11. Stamp mounts comprise a fibrous adhesivebacked sheet 12 of kraft paper and a transparent cover sheet 10 of cellulose acetate or polystyrene bonded thereto at two adjacent edges, the mounts being cut to the desired size from larger rectangular sheets having the transparent cover secured at all four edges. In a method of making stacks of such sheets webs 10, 12 are drawn from their respective rolls by rollers 13 and are cut longitudinally into strips 15 which are stacked with their edges in registered relation and are cut to provide desired sheet size, the stacked sheets are clamped together by plates 22 and clamp 24 sufficiently tightly to inhibit entry of fluid therebetween and the stack is dipped or immersed in a tank 28 containing a liquid 26 such as acetone which softens the plastic without dissolving the adhesive backing of the paper and the fibres of the paper become embedded in the transparent cover at the marginal edge portions. In a modification, Fig. 8, the mount has two transparent sheets 34, 36 and the stamp is placed between the sheets.
Patent GB-669538-A (GB)
Title: Colour television receiver
Inventor: FREDENDALL GORDON L
IPC: B65B9/20
Filed: 1947-11-07
Abstract: 669,538. Television. RADIO CORPORATION OF AMERICA. Nov. 7, 1947 [Dec. 5, 1946], No. 29717/47. Drawings to Specification. [Class 40 (iii). In a colour television receiver for use in a simultaneous colour television system in which signals representative of at least one component colour are modulated on to a subcarrier which modulates the main carrier a signal filter having a sloping attenuation characteristic about the frequency of the subcarrier is employed to separate out the modulated sub-carrier from the main carrier. In one embodiment employed in a three-colour system in which signals representative of one component colour are modulated directly on to the main carrier and the other colour component signals on to respective sub-carriers which then modulate the main carrier, the received (main) carrier wave is connected to an intermediate frequency which, after appropriate amplification and detection (in a linear detector), supplies signal energy to the parallel connected input circuits of three filters, the first being a low-pass filter supplying at its output the component signals modulated directly on to the main carrier and the other two, being band-pass filters, each having a sloping attenuation characteristic about the frequency of the appropriate sub-carrier and adapted respectively to supply the component signals modulated on to the sub-carriers. The output of the low-pass filter is fed to a corresponding colour image reproducing device and the outputs of the band-pass filters, after detection and amplification are fed to respective image reproducing devices appropriate to their component colours. In an alternative embodiment the low-pass and band-pass filters of the previous embodiment are replaced by I.F. filter amplifiers, each of which is tuned to a frequency appropriate to the respective colour signals about which each filter amplifier has a sloping attenuation characteristic. Specification 666,481, [Group XL (c)], is referred to.
Patent GB-1423064-A (GB)
IPC: C25D5/36
Filed: 1973-06-22
Abstract: 1423064 Electrolytic pickling HENKEL & CIE GmbH 22 June 1973 [26 June 1972] 29721/73 Heading C7B Steel sheet, prior to electro-plating is, after an optional preliminary cleaning, electrolytically cleaned in a 1-10 wt per cent solution at pH >13.5 of a cleansing agent which contains free caustic alkali and from 2-40 wt per cent of an alkanolamine having at least 3 free OH groups, at a temperature of 50-90‹C and a current density of 3-15A/dm<SP>2</SP>, followed by acid pickling in HCl, H 2 SO 4  and/or HNO 3 . Solutions of NaOH and triethanolamine are specified which may contain e.g. Na 3 PO 4 , Na silicate, Na gluconate and a polyalkylenether wetting agent. The pickling bath is preferably 5-10% H 2 SO 4  optionally containing 1-5% HNO 3  together with an additive e.g. urea or amidosulphonic acid, to inhibit nitrogen oxide formation. Alternating current may be used.
Patent GB-1007506-A (GB)
Title: Improvements in devices for providing rapid communication between two reservoirs at different pressures
Inventor: LECHEVALLIER MAURICE
IPC: F16K17/16
Filed: 1963-07-26
Abstract: 1,007,506. Controlling reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. July 26, 1963 [July 31, 1962], No. 29744/63. Heading G6C. [Also in Division F2] In a nuclear reactor safety control, a neutron absorbing fluid may be released rapidly into a container in the reactor core to reduce the reactivity. The fluid is stored under pressure in a chamber 2 and is admitted into a chamber 3 within the core by the fracture of the diaphragm 17, which is supported by the dome 19 and which separates the two chambers. The pressure of the intermediate chamber 4 is normally equal to that of 2 and in an emergency is reduced to that of 3. The diaphragm 13 is deformed and the striker 16 fracture 19 to allow bursting of 13.