baber/WOPTO huggingface dataset:
Patent GB-576591-A (GB)
Title: Improvements in refractors for use in street lighting
IPC: F21V5/00
Filed: 1943-10-30
Abstract: 576,591. Prismatic lamp refractors. HOLOPHANE, Ltd., and ENGLISH, S. Oct. 30, 1943, No. 17970. [Class 75 (ii)] Dome refractors for street lighting are formed with horizontal annular prisms 1, 2, 3 extending to a substantial angle above the light source and subtending at the light source L an angle extending to form 7¢‹ to 10‹ below the horizontal for refracting the incident light to an angle below the horizontal, and with vertical prisms 4 extending to from 20‹ to 25‹ below the horizontal for concentrating the light passing through the annular prisms and part of the light below the annular prisms in substantially opposite directions. The refractor may be formed in one piece with the prisms on its inner and outer surfaces or in two parts the outer part having prisms on its inner surface and the inner part having prisms on its outer surface. The outer part may be longer than the inner part and be formed with a shoulder resting on on a lip at the bottom of the inner part. The refractors may be of rounded form as illustrated in Specifications 337,398, [Class 75 (ii)], and 398,419.
Patent GB-1169956-A (GB)
Title: Improvements in or relating to the measurement of the gas content of metals by use of a Vacuum Fusion Gas Analysis Apparatus
Inventor: ASPINAL MICHAEL LESLIE
IPC: G01N33/00
Filed: 1967-04-19
Abstract: 1,169,956. Mass spectrometers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 10 April, 1968 [19 April, 1967], No. 17983/67. Heading H1D. A device for introducing a very small known quantity of a calibration gas into a mass spectrometer comprises a housing assembly 71 and a slidable rod 83 provided with portions of reduced diameter and carrying a series of 0-ring seals 85, 87, 89, 91 and 93, the seals 85, 87, 89 and 91 fitting bores within housing elements 75 and 79. The calibration gas is admitted at 73A and, as the rod 83 is moved to the right, successively trapped in a first chamber 101, expanded in a second chamber 103 which includes the volume of a third chamber 111 to reduce the pressure in a fixed ratio, and isolated in the third chamber 111 from which the gas is released at 73B to the mass spectrometer. Suitable volumes for the chambers 101, 103 including 111, and 111 are respectively 2 ml., 100 ml. and 1 ml. The device is included in a manifold system including bottles of various calibration gases, corresponding expansion chambers to allow control of the gas pressure, and a pair of differently sized capillary leaks for alternative connection to the inlet of the ion source of the spectormeter. The specific application mentioned is to the measurement of the quantity of oxygen, nitrogen and hydrogen present in a copper sample melted under vacuum in a crucible to, e.g. less than one part per million.
Patent GB-733901-A (GB)
Title: Steering arrangement for motor vehicles
IPC: B62D7/00
Filed: 1953-06-29
Abstract: 733,901. Fluid-pressure servomotor control systems. MORGEN, A. L. A. June 29, 1953 [June 30, 1952; Dec. 31, 1952], No. 18013/53. Class 135. [Also in Groups XXXI and XXXII] A motor vehicle (see Group XXXI) has a front axle 4 mounted for sliding movement laterally with respect to the chassis frame 1 by means actuated by the steering wheel 7. Due to articulated connections 12a, 12b between the frame 1 and stub axles of the road wheels 8, 8, this movement results in steering movement of the wheels. The steering column carries a pinion 19 meshing with a rack carried by the control member 18 of a servomotor 17, and a pinion 6 meshing with a rack formed on the axle 4. The servomotor is of the irreversible fluid pressure type. Movement of the member 18 results in a corresponding power-actuated movement of a member 22 connected to the axle 4. Thus on turning the steering wheel 7 the servomotor operates to drive the chassis frame downwards (as viewed in Fig. 5). When turning pressure on the steering wheel is released, centrifugal force tends to produce relative movement between the chassis frame and the axle 4 to rotate the pinion 6. This results in movements of the member 18 to provide a return movement of the steering. There may be a degree of lost motion between the pinion 6 and the steering column.
Patent GB-1463075-A (GB)
Title: Air separation
IPC: F25J3/04
Filed: 1973-04-13
Abstract: 1463075 Separating air CRYOPLANTS Ltd 8 April 1974 [13 April 1973] 18042/73 Heading F4P An air separation process comprises compressing feed air at 1, cooling it in exchanger 1 before passing it to column 3 which is at the same pressure as the compressed air, separating the air in column 3 into an O 2 -enriched bottoms and N 2  vapour, expanding the O 2 -enriched bottoms through valve 4 before heat exchanging it at 5 with the N 2  vapour which then returns to column 3 as reflux, and introducing liquid N 2  from storage 7 to cool column 3.
Patent GB-261340-A (GB)
Title: Improvements in expansible bottle-stoppers
IPC: B65D39/12
Filed: 1926-07-19
Abstract: 261,340. Linner, J. July 19, 1926. Stoppers, expanding plug.-In expanding plug stoppers for bottles in which the plug 1, Fig. 1, is pressed against a body member 4 having a flanged periphery by which it is seated on the bottle mouth, the nut-engaging portion of screwbolt 2 is of a diameter greater than that of the aperture in the body member through which the bolt passes to prevent the bolt from dropping into the bottle, the bolt being introduced laterally into the body through an aperture 8. The bottom of the body 4, Fig. 5, is formed with a radial slot 9 wide enough to pass only a narrow neck 10, formed on the bolt beneath its head which is of greater diameter than its unthreaded portion and the nut 3 is actuated by a bow 6 hinged to it at 5.
Patent GB-482733-A (GB)
Title: Improvements in and relating to colour cinematography
IPC: G02B27/12
Filed: 1936-06-29
Abstract: 482,733. Colour kinematography. CHRISTIANI. L., and MASCARINI, G. June 29, 1936, No. 18057. Void. Convention date, June 29, 1935. Addition to 441,907. [Class 97 (i)] In an optical system for colour kinematography according to the parent Specification, comprising a first objective b producing a real image of an object a at a<1>, and a second objective c<1> and prism system d to form a number of juxtaposed identical 'secondary images e<1>, e<11> a further objective c is provided between the image a<1> and the prism. A second prism may be provided close to the image plane to equalize the ,paths of the rays to the several parts of the images. An aspherical lens may be arranged close to the prism d, or this prism may be an achromatic combination.
Patent GB-948654-A (GB)
Title: Method of drying electrodes for use in electric arc welding
IPC: B23K35/40
Filed: 1961-05-18
Abstract: 948,654. Drying electrodes. ALLMANNA SVENSKA ELEKTRISKA A.B. May 18, 1961 [May 21, 1960], No. 18110/61. Heading F4G. In a method of drying an electrode for use in electric arc welding, the electrode comprising a wire core and a damp casing, the electrode and a heating curtain disposed substantially at right angles to the longitudinal axis of the electrode are moved relative to one another substantially in the direction of the longitudinal axis. A casing 4 of an electrode 1 is dried by a heating curtain e.g. flames 6 from gas burners 2, 3, positioned in a direction perpendicular to the longitudinal axis of the electrode. The electrode and/or curtain are moved so that the curtain and the electrode are moved relative to one another. Heat radiating from an electrical source of heat may replace the gas burners.
Patent GB-405000-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: H01H71/24
Filed: 1932-06-27
Abstract: 405,000. Electromagnetic switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2 Friedrich Karl-Ufer, Berlin.) June 27, 1932,' No. 18140. Convention date, June 25, 1931. [Class 38 (v).] A switch comprises an armature located between a holding electromagnet and a releasing electromagnet energized by overload to cause the armature to strike a contact making member and to accelerate it in the opening direction within the leakage field of the releasing electromagnet. As shown, the armature 2 is normally held by the saturated magnet 3 carrying voltage and current coils 8, 10 respectively but when it is attracted by an increased current in coil 6 on the unsaturated magnet 5 it moves alone for a distance before striking the contact lever 7 which it moves away from fixed contact 12 against spring pressure. The contacts open in the leakage field of the coil 6 and magnet 5. In a modification, the magnet 3 is not polarised but carries only a series coil. The re-closing of the contacts may be effected by the spring or other means. Specification 219,723, [Class 38 (v), Electric switches &c.], is referred to. The Specification as open to inspection under Sect. 91 comprises also an arrangement wherein the armature and switch lever are rigidly connected. This subject-matter does not appear in the Specification as accepted.
Patent GB-381154-A (GB)
Title: Improvements relating to machines for removing tobacco from cigarettes
IPC: A24C5/36
Filed: 1931-06-23
Abstract: 381,154. Recovering tobacco from imperfect cigarettes. LEGG, 0., 21; Goswell Terrace, London. June 23, 1931, No. 18148. [Class 130.] In apparatus wherein the cigarettes are ripped open and passed through sieves, the paper and adhering tobacco which do not pass through a sieve are conveyed to a succeeding sieve or to final collectors by a blower 5 with a pipe 6 opening with a narrow mouth into the receptacle 4 of the first sieve 1, and a suction pipe 7 having a larger mouth leading from the receptacle 4 to a cyclone 8 arranged to deliver the papers &c. to the next sieve 2. Similarly, the papers &c. collected in a receptacle 9 from the sieve 2 are conveyed to a third sieve 3 by a blower 10 and cyclone 13. Again, conveyance from the receptacle 15 at the end of the sieve 3 is effected by the same blower 10 and by a pair of cyclones 19, 20 delivering into sacks or other receptacles. A damper 21 may be used to bring either of the cyclones 19 or 20 into action.
Patent GB-190694-A (GB)
Title: Method of treating cellulose esters
IPC: C08B5/04
Filed: 1922-07-01
Abstract: Cellulose esters such as the nitrates are dissolved in liquids in which they are not initially soluble, by treating them with liquid anhydrous ammonia, transferring the treated ester into the liquids, and evaporating the ammonia.  The ester may be completely dissolved in liquid anhydrous ammonia, for example as described p  in Specification 182,488, or may be slightly moistened therewith to form a gelatinous mass, in which case the subsequent admixture with the liquid may be carried out at atmospheric pressure.  In this way solutions of cellulose nitrates in aliphatic or aromatic alcohols, or their esters, either alone or admixed with one another or with carbon tetrachloride, chloroform, monochlorethane, tetrachlorethane, benzene, benzine naphthalene, or any of the chloraromatic compounds may be obtained.
Patent GB-245176-A (GB)
Title: Improvements relating to calling up devices for wireless communication
IPC: H04W88/02
Filed: 1924-07-31
Abstract: 245,176. Beddington, G. C. July 31, 1924. Calling apparatus. -In a wireless calling-up system, two or more " key " valves tuned to different frequencies are interposed between the receiving circuits and control the operation of a relay device contained in the plate circuit of a subsequent valve. As shown in Fig. 1, the calling- device is operated by two waves of different frequencies received simultaneously by the tuned coils L', L<2> connected to a double-grid valve V<1>. The effect of the combined reception imposes a negative charge upon the grid G<3> of the valve V<2>. This shuts off the normal plate current and energizes the relay R to operate a call. The resistance r provides a delay action which protects the calling device from actuation by fortuitous signals or atmospherics, whilst a condenser C holds the negative grid charge for a perceptible period of time. The arrangement shown in Fig. 2 operates when two sets of signal waves are received consecutively. During reception bv the coil L' the valve V<1> removes the negative charge normally imposed by the valve V<2> upon the grid G' of the double-grid valve V<3>. Subsequent reception by the coil L<2> similarly removes the prohibitive bias upon the grid G<4> of the double-grid valve, thereby paralysing the valve V<4> and energizing the relay R as before. In a further modification, three " key " valves are arranged to control a common relay valve so that the calling-device be operated only when three separate signals are received consecutively within a given time-interval.
Patent GB-736640-A (GB)
Title: Flow control valves for pneumatic conveying systems
IPC: B65G53/56
Filed: 1953-07-02
Abstract: 736,640. Valves. BAKER PERKINS, Ltd. July 2, 1953 [Sept. 30, 1952], No. 18389/53. Class 135. [Also in Group XXX] A flow control valve for pneumatic conveying systems, comprises a piston valve 13 which in one position provides a passage 14 connecting conduits 3, 4, radial to the valve cylinder and in another position, away from the open end 8 of the cylinder, provides a deflecting portion 17 which directs air and conveyed material from the conduit 3 through the open end of the cylinder into a container 2 and allows the conveying air to pass to the conduit 4 after the material has been deposited in the container. The valve may operate a limit switch in a control circuit for a solenoid-operated fourway valve controlling the air or liquid supplied or exhausted via pipes 18, 19 for actuating a piston 11 operating the valve 13. Specifications 725,388 and 727,300, [both in Group XXX], are referred to.
Patent GB-1034792-A (GB)
Title: Improvements in or relating to package holders for creels
IPC: D02H1/00
Filed: 1962-05-14
Abstract: 1,034,792. Creels. CROWTHER Ltd. May 14,1963 [May 14, 1962; Jan 14,1963], Nos. 18395/62 and 1604/63. Heading D1M. A yarn package support for a warping creel consists of a U-shaped bracket 12 embracing an upright 10 of the creel frame, and a sleeve 13 passing through holes in the legs of the bracket 12, the assembly being clamped on the upright by setscrews (not shown) in the loop of the bracket, which draw the sleeve 13 against the upright. To change a yarn package 18, the operator reaches between uprights 10 and grasps the package, whilst turning the peg 15 to disengage its looped end 22 from inside the bracket 12; the peg can then be withdrawn from the package as far as permitted by a circlip 17.
Patent GB-1018767-A (GB)
Title: Improvements in and relating to shelving
Inventor: DUNNING CHRISTOPHER ALFRED FRE
IPC: A47B57/36
Filed: 1964-05-04
Abstract: 1,018,767. Shelving. A. J. DUNNING & SON (WEYHILL) Ltd. Dec. 29, 1964 [May 4, 1964], No. 18430/64. Heading A4B. Shelves 6 are supported by projections 7 fitting between frame uprights 1, 2 and resting on bridge members 5, which are removably inserted in slots 4 in the facing sides of the uprights 1, 2. The bridge members 5 are formed of angle-section metal and the shelves 6 may have strips 8 on their undersurfaces to form stops to prevent the displacement of the bridge members 5.
Patent GB-1388232-A (GB)
Title: Apparatus for conversion of the format of digital pulse code modulation signals
IPC: H04B14/06
Filed: 1973-04-18
Abstract: 1388232 PCM conversions WESTERN ELECTRIC CO Inc 18 April 1973 [19 April 1972] 18651/73 Heading G4H Apparatus is described for wholly digital conversion between signals in differential and adaptive differential pulse code modulation forms (DPCM, ADPCM). In Fig. 3, an ADPCM signal (containing, e.g. 3-bit words), is examined by LOGIC 30 to ascertain the appropriate (3-bit) binary multiplier factor to expand or contract the scale of the applied signal. The signal and the output from 30 are combined in a multiplier 31 to produce 6-bit-word DPCM signals which are stored in a register 32. If the subsequent circuitry can only handle, e.g. 4-bit words, then the contents of 32 are truncated, the two lowest bits passing to an accumulator 33: when the sum in 33 totals one or more, a unit digit code value is read out and combined with the 4-bit truncated signal from 32 in an adder 36, any remaining fractional part remaining in 33 for further accumulation. The output from 36 is a 4-bit-word DPCM signal which may be fed to an accumulator 37 to obtain a PCM signal. In Fig. 4, a 4-bit-word DPCM signal is converted to PCM by an accumulator 41 which contains an adding register so that the output may be truncated to any desired accuracy (e.g. 6-bit). This output is fed to a subtracter 42 together with a (6-bit) local digital estimate of it which reflects the nature and extent of the companding desired for the ADPCM format. The 6-bit-word difference signal is truncated in a register 43 so that, e.g. a 3-bit-word signal is fed to an adder 44 together with the "carry" signal from an accumulator 45 receiving the lowest 3 bits. The output from 44 constitutes the ADPCM signal in 3-bit-word form. The local estimate of the input PCM signal is developed by integrating a processed version of the output signal: to achieve the adaptive characteristic required for ADPCM the output signal is adjusted by altering its scale in a multiplier 47 controlled by LOGIC 46 which examines the output bit stream for quantizer occupancy characteristics. The local estimate signal may then be truncated in a register 48.
Patent GB-1492306-A (GB)
Title: Marine vessel propulsion unit
IPC: B63H5/15
Filed: 1975-05-05
Abstract: 1492306 Rudders GLACIER METAL CO Ltd 5 May 1976 [5 May 1975] 18671/75 Heading B7V A Kort rudder has upper and lower pintle bearings 8 and 9, the lower of which is located in a housing 15 which is removable from the hull. The housing 15 is held by bolts 18 and dowels 16, 17 and when released by a diver, allows the rudder to be lowered to release the upper pintle from its bearing 11, and the rudder to be lifted by a mechanism 21, 22. The propeller has removable blades 6, and a shaft 1 that can be moved axially to facilitate this operation. In Fig. 4, not shown, the upper pintle 8 is bolted to the rudder to obviate the need to lower the rudder before removal.
Patent GB-835895-A (GB)
Title: Process for the manufacture of ª‡:ª‰-di-[aryloxazolyl-(2)]-ethylene compounds
Inventor: DUENNENBERGER MAX
IPC: C07D263/62
Filed: 1956-06-15
Abstract: a ,b -Di-[aryloxazolyl-(2)]-ethylene compounds are manufactured by condensing two molecular proportions of an ortho-hydroxy aminoaryl compound at raised temperature with one molecular proportion of fumaric acid, malic acid or aspartic acid or an alkyl mono- or di-ester of one of these acids, and, without separating the condensation product, subjecting it to ring closure by heating to 100-200 DEG  C. in the presence of a catalyst capable of eliminating the elements of water to form the di-oxazolyl compound, and, when malic acid or aspartic acid or one of their esters is used as starting material, splitting off water or ammonia, respectively, from the residues of these acids.  The condensation is preferably carried out in the presence of an organic solvent, e.g. mono-, di- or tri-chlorbenzene, nitrobenzene, toluene, xylene or cumene.  Suitable catalysts are, for example, sulphonic acids of the benzene series and boric acid, and these catalysts also eliminate water or ammonia from the dicarboxylic acid residue when necessary.  The ortho-hydroxy amino aryl compounds used as starting materials may contain further substituents such as alkyl and alkoxy groups having 1-4 carbon atoms, halogen atoms and nitro groups.  Examples are given of the preparation of <FORM:0835895/IV (b)/1> <FORM:0835895/IV (b)/2> <FORM:0835895/IV (b)/3> <FORM:0835895/IV (b)/4> <FORM:0835895/IV (b)/5> and <FORM:0835895/IV (b)/6> Specifications 835,892 and 835,898 are referred to.ALSO:a .b  - di - [aryloxazolyl - (2)] - ethylene compounds are produced by condensing 2 molecular proportions of an o-hydroxy amino aryl compound at raised temperatures with one molecular proportion of fumaric acid, malic acid or aspartic acid or an alkyl mono- or di-ester of one of these acids, and, without separating the condensation product, subjecting it to ring closure by heating to 100-200 DEG  C. in the presence of a catalyst capable of splitting off water and, when malic acid or aspartic acid or one of their esters is used as starting material, splitting off water or ammonia respectively from the residues of these acids.  Suitable catalysts are, for example, sulphonic acids of the benzene series and boric acid.  The o-hydroxy amino aryl compounds used as starting materials may contain further substituents such as alkyl and alkoxy groups having 1-4 carbon atoms, halogen atoms and nitro groups. Specifications 835,892 and 835,898 are referred to.
Patent GB-134374-A (GB)
Title: Improvements in Punching Machines.
IPC: B21D28/24
Filed: 1918-11-18
Abstract: 134,374. Wood & Co., E., Rothwell, W. E., and Coombes, F. Nov. 18, 1918. Spacing racks and like bars.-A gauge for spacing holes when punching bars &c. comprises a spindle B rotatable in brackets C and carrying radial pegs D with which the end of the work engages in succession. The pegs may be inserted in holes in the spindle, or may be carried by collars adjustable on the spindle. The end of the spindle engages an adjustable stop E.
Patent GB-1219148-A (GB)
Title: Non-linear decoder for ternary codes
Inventor: AVIGNON MICHEL LOUIS
IPC: H03M1/00
Filed: 1968-04-22
Abstract: 1,219,148. Digital to analogue converters. INTERNATIONAL STANDARD ELECTRIC CORP. 22 April, 1968, No. 18872/68. Heading G4H. In non-linear digital to analogue converter for ternary scale numbers, the non-linear characteristic is approximated by a plurality of differently sloped straight line segments, the most significant ternary digits of a number being used to develop a signal representing the minimum voltage of the corresponding segment, the remaining digits being used to develop a signal representing the position within the segment and the two signals being combined in a weighting and summing circuit to produce the analogue output. The characteristic, Fig. 2, comprises seven segments formed by lines having four different slopes. The value of the digits depends upon the zone in which the code falls and this is determined by the value of the two highest valued ternary digits. Each ternary digit is expressed by two binary bits. The four bits corresponding to the two highest ternary digits are recoded to produce a signal representing one of the nine zones CO, C<SP>1</SP>1-C<SP>1</SP>4. The remaining digits are recoded to give a "position signal" marking certain ones of twelve leads to represent the position within a zone. Eight zone leads, representing the eight zones C<SP>1</SP>-C<SP>1</SP>4 and C<SP>11</SP>1-C<SP>11</SP>4 and the twelve position signal leads are each connected to a weighted current generator producing currents having weights of 1, 2 or 3. These are additively connected in six groups, and applied to six different inputs of a resistive ladder network. The values of the resistors are such that the effect of the second input along the ladder is one-third that of the first input, and the effect of the third input is one ninth and so on. The network sums the minimum zone value, and the position signal which is given the appropriate value for the zone in which the number falls. The converter may be used in a balancing type analogue-to-digital converter.