baber/WOPTO huggingface dataset:
Patent GB-1465874-A (GB)
Title: Multiple access message retrieval system
IPC: G09B7/04
Filed: 1975-05-05
Abstract: 1465874 Selective signalling; educational appliances EDUTRON Inc 5 May 1975 02904/76 Divided out of 1465873 Headings G4H and G5G [Also in Division H4] In a multiple-access information retrieval system, each of a plurality of message receiving locations receives N (a plurality) message segments of duration t multiplexed into a signal of duration t and demultiplexes this signal into a message of duration Nt, a segment being selected out for this purpose by mixing the multiplexed message with an adjustable frequency and passing the resulting heterodyne signal through a filter. The disclosure is as in the parent Specification q.v.
Patent GB-672348-A (GB)
Title: Improvements in manufacturing of lime-putty
IPC: C04B2/04
Filed: 1950-02-03
Abstract: <PICT:0672348/III/1> Lime putty is prepared by slaking quick lime, including magnesium lime, to provide a milk, partially de-watering the milk immediately after slaking by vacuum filtration on a filter medium in a continuous rotary drum filter, then conveying the de-watered material on the filter medium as a uniform cake through a cooling and aging cycle, and finally discharging as an irregular, putty-like mass.  As shown, lime is slaked at say 180 DEG F. in tank 15 by water from pipe 19, using say 75-80 per cent by weight water, and passes to the pan 28 of a rotary filter 29.  Pump 30 returns overflow from the pan to tank 15 via pipe 31.  The filter drum is formed into a number of segments 33, those submerged and on the rising side of the drum being connected to pump 34 which returns liquid to tank 15.  The filter web comprises contiguous filaments 32 passing around the drum and a roller 39, and which are caused to separate by guide rollers 391, 3911 on passing over roller 39 to discharge the material on to conveyer 50.  Each filament consists of a core of neoprene &c. covered by a helical stainless steel spring. The filter cake at the topmost position of the drum may contain equal parts by weight of water and solids, its time of cooling on passing to roller 39 being, say, five minutes.
Patent GB-1360578-A (GB)
Title: Semiconductor integrated circuits
IPC: H01L27/04
Filed: 1972-01-21
Abstract: 1360578 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 21 Jan 1972 [30 March 1971] 2910/72 Heading H1K An integrated circuit voltage-variable capacitor utilizes as one "plate" an inversion layer contiguous with and of the same conductivity type as a region of a co-integrated device. In the structure shown an IGFET having source 20 and drain 22 regions is provided with a capacitor connecting its gate and source. The thin gate oxide 14 bears conductive areas of polycrystalline silicon acting as capacitor electrode 18 and transistor gate 16 and which are parts of an original layer used in defining the source and gate diffusions. An apertured thick oxide layer 26 bears metallization forming the source and drain electrodes and interconnecting the capacitor and gate.
Patent GB-348059-A (GB)
Title: Improvements in lawn mowers
IPC: A01D69/02
Filed: 1930-01-28
Abstract: 348,059. Motor lawn-mowers. BROOKE, J. M., Adrian Works, Lowestoft, Suffolk. Jan. 28, 1930, No. 2976. [Class 6 (ii).]' In a lawn-mower adapted to be manually propelled, but wherein a motor 19 is provided for driving cutting-blades 15, the motor 19 is mounted on a platform 18 above a main roller 10, and one end 2 of the motor shaft is arranged to drive the blades 15, and the other end of the shaft is adapted to drive any one of a number of small accessory devices, as by attaching a flexible shaft 38 to a sleeve 36 fixed to the shaft. The motor 19 drives the blades 15 through a slip clutch comprising friction discs 20, 21, the latter being splined to a shaft, coaxial with the motor shaft, and operatively connected to the shaft 14 of the blades as by a sprocket drive, with reduction gear if necessary. The cutter drive may be disconnected and the motor used to drive an accessory device alone. For an electric motor, current is obtained by a flexible conductor 34 from mains, a control switch 35 being provided. A small roller 16 and a support 17 for a grass-box may be provided in front, and the mechanism may be protected by a cover.
Patent GB-708867-A (GB)
Title: Slide rule
IPC: G06G1/04
Filed: 1952-02-05
Abstract: 708,867. Calculating-apparatus. QUILLINAN, M. J. Feb. 5, 1952, No. 2994/32. Class 106. (1) A slide rule comprises a stock or "housing" of triangular or polygonal cross-section having a channel in one face which receives a slide of substantially circular cross-section resiliently urged towards this channelled face. The slide is rotatable in the channel and, as shown, has four separate scaled surfaces 10 any one of which may be rotated to the upper operative position; the opposite surface rests on a fabric layer 13 on top of a strip 12 resiliently supported by transverse leaf springs 14. Pins 18 carried by the strip pass through holes in the springs and the bottom of the channel. The index 23 extends over two sides of the triangular stock to co-operate with scaled surfaces 10 and 24-27 and is held in position by portions engaging the surface 10 and an indentation 28.
Patent GB-952702-A (GB)
Title: Oil-fired coke ovens
Inventor: JOHNSON HORACE
IPC: C10B21/00
Filed: 1962-01-26
Abstract: 952,702. Liquid fuel-fired coke ovens. ESSO RESEARCH & ENGINEERING CO. Jan. 15, 1963 [Jan. 26, 1962], No. 3035/62. Heading F4B. A coke oven has means for injecting a normally liquid fuel into the combustion flues thereof. Retort chambers 1 are heated by arrays of combustion flues 2 each having a relatively narrow inspection chamber 3, the cover 6 of which is provided with an injection tube 5 to deliver liquid fuel from the tank 7 through pump 9 and valves 10, 13, 14 and 15 to said combustion flue. The valves 13, 14 and 15 and the metering valve 10 containing the piston 11 are actuated by a suitable mechanical, pneumatic, hydraulic or electrical device to regulate the pulses of fuel delivered, at a rate between 4-24 pulses per minute, each pulse providing 2 to 12 c.c. of fuel. The fuel may also be supplied continuously through atomizing nozzles or alternately from each end of the combustion flue in continuous streams.
Patent GB-627048-A (GB)
Title: Improvements in or relating to concentric conductor electric cables
IPC: H01B11/00
Filed: 1946-01-31
Abstract: 627,048. Transmission cables. STANDARD TELEPHONES & CABLES, Ltd., and BAGULEY, E. Jan. 31, 1946, No. 3123. [Class 36] A communication cable of given outer diameter with three concentric conductors is arranged to give a maximum number of frequency-band channels as determined by the permissible attenuation in the cable length. For an attenuation of X decibels in a length L miles of two concentric-conductor cables, the maximum frequency in megacycles per second (F) is given by the equation where D and d are the diameters in inches of the outer and inner conductors, p the specific resistance (ohms per centimetre cube) and K the specific inductive capacity. For a frequency-band channel of four kilocycles per second the number of channels (N 1 ) is therefore 250 F. With copper conductors (p=1.67Î 10<SP>-6</SP>) and using the above formula, this gives where the logarithm is to base 10 and this D has a maximum value when -=3.6. Now, for d a three-concentric-conductor cable providing two transmission lines and of given outer diameter D with intermediate conductor of diameter d and central conductor of diameter d d 1  the ratio of - is made 3.6, giving a maximum d 1  number of channels N 2  for this inner transmission line of the cable. The total number of channels N  1  + N 2  is therefore where d/d 1 -=3.6. The total number of channels N 1 +N 2  as given by the above expression is a maximum when D/d=3.2 and is greater than the number that would be given if D/d and d/d1 were each made equal to 3.6. If the inner and outer transmission lines of a single threeconductor-cable are to be used for simultaneous out and return communication then the inner transmission line is arranged as before with a ratio d/d 1 =3.6 to give the maximum number of channels therein N 2  and the outer transmission line must give the same number of channels. D This condition N 1  = N 2  gives a value -=1.58. d The inner conductor 4 may be tubular and may contain additional conductors 7, each covered with an insulating layer 8 of a solid polymer of ethylene. A further layer 9 is extruded around these, over which the conductor 4 is formed. Conductors 3 and 1 are applied around further solid insulating layers 5, 6 and the cable is completed by insulation 2, armouring 10 and external covering 11. The intermediate conductor 3 may be constructed to include a thin layer of steel to form a magnetic screen between the two transmission lines.
Patent GB-1005523-A (GB)
Title: Encased electrical components
IPC: H01G4/224
Filed: 1964-08-05
Abstract: 1,005,523. Capacitors. STANDARD TELEPHONES & CABLES Ltd. Aug. 5, 1964 [Aug. 6, 1963], No. 31797/64. Heading H1M. [Also in Division H2] An electrical component 1, e.g. a capacitor, is enclosed in a tubular case 1a whose end is sealed by an insulating cover plate 2 carrying a terminal 8 connecting to the component, which is connected by wire 7 to flexible insulated lead 5 which is sealed by adhesive into an aperture of a protective cap 4. The cover plate seats on a ridge of the casing wall which is swaged to retain the plate; the latter having exterior annular groove 3 into an under cut 10 of which fits annular projection 9 of the foot of the protective cap; retained by encompassing resilient washer 12 and sealed by adhesive. In Fig. 2 (not shown) the flexible lead emerges from the side of the protective cap, and in Fig. 3 (not shown) it is retained by a binding sleeve within the cap and comprises two wires connected to two terminals of the cover plate. The latter may be formed in situ by a mass of sealing compound.
Patent GB-746538-A (GB)
Title: Improvements in or relating to a method and device for compensating for tolerances in matrices in sine composing and casting machines
IPC: B41B11/18
Filed: 1954-02-03
Abstract: 746,538. Type-bar-making machines. LINOTYPE GES. Feb. 3, 1954 [Feb. 9, 1953], No. 3255/54., Class 100 (3). Aligning matrices.-A device for compensating for differences in the widths of matrices in line-casting machines comprises resilient means for pressing the matrices forming a line against the mould. Matrices 5 are pressed against the mould 16 by means of a pressure bar 8 having a resilient facing 9, and located between upper and lower justification rods 7, 10. The facing 9 may be of rubber. Alternatively, the pressure member may be a rubber bar.
Patent GB-1413622-A (GB)
Title: Flow control valve system with single spool second
Inventor: BYERS JR J O
IPC: F15B13/043
Filed: 1973-01-22
Abstract: 1413622 Fluid pressure servomotors SANDERS ASSOCIATES Inc 22 Jan 1973 [24 Feb 1972] 3275/73 Heading G3P A fluid pressure servomotor system comprises a first stage spool valve 11, the rate of flow through which is proportional to the input signal, a second stage spool valve 12 the rate of flow through which is proportional to the rate of flow through the first stage spool valve, and a pair of fluid pressure sources P1 and P2 connected respectively to the first and second stages, the pressure of P1 being larger than that of P2, whereby the load 45 is moved under the combined effect of fluid from both sources so that the rate of flow to it is independent of the force on the load. The second stage spool valve has end chambers 33, 33' which receive fluid from the source P1 according to the movement of the first stage spool. When the spool 35 is in the neutral position, two lands 35b, 35c block the working parts 43, 44. In addition, the passages 51', 51 in the spool are closed off apart from a pair of orifices 55', 55 which communicate with the second source. When an input signal is applied by the motor 26, the first stage spool 15 moves to admit fluid to one of the end chambers. After the pressure has built up to counteract the end springs 36, 36', the spool 35 moves allowing fluid from source P1 to flow to the load via passages 51 or 51' and fluid from source P2 to flow via annular groove 41 or 42. In a modification, the space between lands 35b and 35c may communicate with reservoir whilst the orifices are spaced apart to communicate with the second pressure source, Fig. 4 (not shown). Also, the first stage spool may be four-way and communicate with a reservoir or the second stage source, Figs. 5 and 6 (not shown) and may be solenoid actuated, Figs. 7 and 8 (not shown).
Patent GB-560592-A (GB)
Title: Improvements in or relating to paper and like containers
IPC: B65D3/30
Filed: 1943-03-01
Abstract: 560,592. Paper &c. containers. GEE, L. F., and GEE, J. A. March 1, 1943, No. 3288. [Class 125 (iii)] A threaded metal' ring c for engagement by the skirt of a screwthreaded closure cap has the lower doubled portion d entered in the mouth of a fibrous container, an outwardly extending lip l provided at the edge of the doubled portion being clinched or pressed into the exterior surface of the wall.
Patent GB-1189287-A (GB)
Title: Hand-Rail Return Guide Means for an Escalator
IPC: B66B23/24
Filed: 1969-01-21
Abstract: 1,189,287. Endless conveyers. ORENSTEIN-KOPPEL und LUBECKER MASCHINENBAU A.G. 21 Jan., 1969 [26 Jan., 1968], No. 3314/69. Heading B8A. Hand-rail return guide means for an escalator comprising a chain consisting of hand-rail support rollers 1 linked by fish-plates 3 and adapted for attachment by its ends 9 to an escalator balustrade in alignment with the escalator hand-rail 6. The rollers are mounted on a bearing pin 2 linking the plates 3 and 2, the ends of which are supported on ledges 7 in a hand protection unit 8. The pins 2 are held in the fish-plates 3 by means of detachable elastic spreader rivets (5) (Fig. 2, not shown).
Patent GB-1361616-A (GB)
Title: Rearing of fish
Inventor: ANDERSON J I W
IPC: A01K61/10
Filed: 1971-01-28
Abstract: 1361616 Fish rearing UNILEVER Ltd 23 March 1972 [28 Jan 1971] 3363/71 Heading A1A A method of rearing fish of the family Salmonidae in which the fish are reared to the smolt stage in fresh water, i.e. up to 10 parts of salt per 1,000, enclosures and thereafter are reared while contained in tidal sea water, of at least 20 parts but usually 30-35 parts salt per 1,000. The smolts are transferred from fresh to sea water without acclimatisation in water of intermediate salinity, at a Condition Factor (K) of at least 0.8 defined by where w is the weight of the fish in grams and 1 is its length in centimetres. The condition factor should be attained at least two weeks before transfer, and immediately preceding transfer the smolts are starved for from 1-3 days.
Patent GB-215426-A (GB)
Title: Sheaf shockers
IPC: A01D75/06
Filed: 1923-02-05
Abstract: 215,426. Varley, F. W. Feb. 5, 1923. Directing and adjustably supporting endless chain conveyers and elevators; discharging devices for endless chain conveyers and elevators; tensioning chains.-A shaft 75 driven through a belt 79 from a motor 82 drives through a belt 121 a shaft 119, Fig. 24, this shaft being provided with sprockets 118 connected by chains 117 to sprockets 116 keyed to a sleeve on a shaft 115. The sleeve also carries pinions which mesh with similar pinions on shafts 110, 111 driving the sprocket wheels 112, 113 of the horizontal and the inclined portions 108, 109 respectively of a conveyer that carries sheaves from a binder to the feeding device for the basket of a shocking-machine. The shafts 110, 111, 115 are mounted in T-shaped members of which the arms are adjustable. The shaft 115 is also supported by triangular members 126 adapted to pivot about the shaft 119 and provided with rolling and sliding devices engaging guides in arcuate brackets secured to the main frame. The members 126 are adjusted along the arcuate brackets by rotating the shaft 115 this shaft being provided with pinions 123 engaging racks 124 on the brackets; dogs 127 normally locking the pinions are interconnected so that they may be lifted to permit the adjustment of the members 126 by turning a cranked handle 126<c> on either side of the machine. The sheaves pass from the upper end of the conveyer 109 to a discharging device comprising a skeleton frame 136 the top of which has plates 138 mounted on spring hinges which are adapted to direct the sheaves butt upwards through the funnel shaped lower portion of the frame into the basket 19. The sides of the frame 136 are hinged to the back 144 and are covered with canvas or sheet metal. The back 144 of the frame consists of two arms carrying a sheet metal member through spring connections; in a modification the sheet metal member is replaced by two spring hinged doors.
Patent GB-568120-A (GB)
Title: Improvements in or relating to radio beacons
IPC: G01S1/02
Filed: 1940-02-23
Abstract: 568,120. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., and EARP, C. W. Feb. 23, 1940, No. 3433. Addition to 525,182. [Class 40 (v)] The directive system described in the parent Specification is modified by transmitting both the angularly-related signals and the " comparison " signal on one carrier-wave, instead of two, and by using only one receiver. In transmission, Fig. 1, a carrier-frequency F is modulated at M by two tone-frequencies f1, f2, and the modulated output is applied to a non- directive aerial V1. Simultaneously, the two frequencies f1, f2 are combined at D to give sum and difference frequencies which are separated. by filters and superposed on the carrier wave F at MA and MB before being applied to the two " crossed " directional aerials L1, L2. At the receiver, Fig. 2a, signals picked up by the aerial V2 are separated into the sub-frequencies by the filter circuits shown. Of these, f1 and f2 are modulated at MR to produce the comparison frequencies f1 + f2 and f1 - f2, which are applied respectively to the two field-coils X, Y of the dynamometer indicator B. Simultaneously, the original sum and difference frequencies f1 + f2 and f1 - f2 are applied directly from the detector D through a filter FS3 to the moving-coil S of the indicator. The same tone-frequency may be applied to each of the directive aerials L1, L2 if a phasedifference is imparted so as to simulate a single rotating aerial. As shown in Fig. 3, a single tone-frequency f is combined with a carrier F and applied to the non-directive aerial V1. The same frequency f is " doubled " at HG and split into phase-quadrature at PS before being applied to the modulators MA and MB and thence to the directive aerials L1, L2. In reception, the tone-frequencies, after detection, are filtered out and applied to a phase-meter indicator, Fig. 4 (not shown). Modulation may be effected by the mechanical (rotating coil or condenser) arrangement described in Specification 567,967. The carrier wave may simultaneously be used to carry speech or telegraphic signals.
Patent GB-229291-A (GB)
Title: Improvements in electric circuits supplied by electric generators driven by windmills
IPC: F03D9/00
Filed: 1925-02-07
Abstract: 229,291. Constantin, L., and Beaulieu, P. Fortier-. Feb. 12, 1924, [Convention date]. Regulation, automatic.- A separately excited generator G driven by a windmill supplies energy to a work circuit such as a motor M in series with which is an electrically heated boiler C. The variations in power output of the generator are absorbed by the boiler so as to maintain constant absorption of energy by the motor. A regulating device V is arranged to move one of the electrodes L in the boiler C so as to compensate for the variations in output of the generator. Specification 228,918, [Class 39 (iii), Heating by electricity], is referred to.
Patent GB-341296-A (GB)
Title: Improvements in or relating to means for detecting frequency modulated energy
IPC: H03D3/12
Filed: 1930-02-03
Abstract: 341,296. Wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Hansell, C. W. ; Port Jefferson, Long Island, New York, U.S.A.) Feb. 3, 1930, No. 3673. Convention date, Feb. 1, 1929. [Class 40 (v).] A detector for frequency-modulated signals comprises an analysing circuit 44, a detector 40 and means 54 to couple regeneratively the input and output circuits of the detector with respect to high frequencies. The reaction is inductive or capacitive (Fig. 4, not shown) according to the side of the signalling frequencies beyond which the analysing circuit is tuned, in order to straighten the response curve over the frequency band (Fig. 2, not shown). As shown, a second analysing circuit 46 is tuned to a frequency lying to the other side of the frequency band and is connected to the grid of a second detecting valve 42, an output transformer 50 is connected in series with the anodes of the valve, and regenerative coupling 54, 56 in the anode circuits straighten the intersecting sides of the resonance curves of the analysing circuits (Fig. 6, not shown).
Patent GB-1146556-A (GB)
Title: Viscosity reduction of wet process superphosphoric acid
IPC: C01B25/24
Filed: 1967-01-25
Abstract: 1,146,556. Superphosphoric acid; viscosity reduction. ARMOUR AGRICULTURAL CHEMICAL CO. 25 Jan., 1967, No. 3726/67. Heading C1A. The viscosity of wet process superphosphoric acid is reduced by simultaneous ageing and agitation of the acid for at least one day at temperatures above 150‹ F., preferably between 150-220‹ F. The process may be applied to the superphosphoric acid obtained by concentrating wet process orthophosphoric acid to 68-78% P 2 O 5 , if necessary after cooling to the ageing temperature.
Patent GB-770176-A (GB)
Title: Radar or visual display apparatus
Inventor: CUTLER ALBERT ERNEST
IPC: G09B9/40
Filed: 1954-02-09
Abstract: 770,176. Air and marine traffic supervision. COMMUNICATIONS PATENTS, Ltd. Feb. 3, 1955 [Feb. 9, 1954], No. 3748/54. Class 118 (2). [Also in Group XL (c)] In a system for displaying the plan position of a number of craft, e.g. aircraft, the positions of the craft relative to a control station, e.g. an aircraft carrier, are displayed at said station, e.g. on a plotting board or radar display, and means are provided for displaying on a cathoderay tube the locations, relative to a selected craft, of the other craft. As shown, the main display 3, Fig. 1, comprises a radar P.P.I. display, Fig. 2, centred on the control station location 8 and video signals from display unit 3 are applied to the cathode-ray tube 5 in the auxiliary unit 4 together with scanning potentials from a timebase unit 6 so that an enlarged circular portion 17 of the main display is displayed on the tube 5. Unit 7 provides voltages representing the x and y co-ordinates of each of the five aircraft displayed as dots in Fig. 2 on the main display 3, unit 11 provides corresponding voltages u=R sinα and v=R cosα where R is proportional to the radius of the auxiliary display and α is the heading of the craft and unit 14 provides corresponding signals representing the heading α, the outputs from units 7, 11 and 14 corresponding to a particular craft 16 (the second as shown) being selected by ganged switches 9, 10, 12, 13 and 15 and applied to unit 4. Outputs x and u are combined and applied to the X deflection circuit and outputs y and v are combined and applied to the Y deflection circuit so that the resultant display on tube 5 corresponds to the circular portion 17, Fig. 2, of the main display and the selected craft 16 appears at the edge of the auxiliary display with the direction of the diameter 18 passing through the selected craft 16 corresponding to the heading of craft 16. The output from unit 14 rotates the tube 5 through the angle α to make the diameter 16 vertical. The lines on the face of tube 5 then indicate bearings relative to the heading of craft 16. If deflection voltages u and v are omitted, the selected craft will be at the centre of the auxiliary display which can be confined to the forward zone of the craft by a mask which is rotated by the heading signal.