baber/WOPTO huggingface dataset:
Patent GB-465529-A (GB)
Title: Improvements in or relating to electric indicating apparatus more particularly liquid level indicators
IPC: G01F23/64
Filed: 1935-12-02
Abstract: 465,529. Photo electric control of liquid-level indicators. GILLES, G., and LUSTIN, H. Dec. 2, 1935, Nos. 33397 and 33398. Convention dates, Dec. 3, 1934 and Nov. 22, 1935. [Class 40 (iii)] In a system for indicating the movements of a member, such as the float of a liquid level apparatus, the member selectively controls the projection of the light from a plurality of lamps on a photo-electric cell connected in the circuit of an indicating device. As shown in the Figure, a plurality of lamps k<1> ... k<7> are arranged in tubes b which surround a central tube a. Each tube is provided with a mirror q<1> ... q<7> which reflects the light through apertures in the outer and central tubes, in order that the interior of the central tube may be illuminated. The apertures are arranged helically around the central tube. A photoelectric cell h is mounted at the bottom of the central tube and a float p is provided to act as a screen. The lamps are connected to a switch board m and the arrangement is such that the lamps are brought into operation in succession until the indicator n connected to the cell h is operated. The cell is operated when the lamp which projects light just below the screen p is illuminated. In a modification the cell h may be arranged at the top of the central tube. In a further modification, a float operates a slotted screen which permits light from one of a number of lamps to fall on to the cell. The level is then determined by operating the lamps in succession until an indicator connected to the photo-cell is operated. In order to increase the precision of the indications, a second screen associated with a second group of lamps and a photoelectric cell may be provided, the arrangement being such that the second screen rotates through one complete revolution while the first screen moves from one lamp to the next. The Specification as open to inspection under Sect. 91 describes a system wherein a screen having a slot of varying width is provided and is operated by the float to allow light from a single lamp to illuminate the photo-electric cell, the amount of light falling on the cell being proportional to the height of the liquid. To permit calibration the screen is movable by an electromagnet in order that the cell may be fully illuminated. That Specification also describes further modifications wherein the amount of light falling on the cell depends upon the height of liquid. For example a lamp and a cell may be mounted at the top of neighbouring tubes provided with apertures along their line of contact or the lamp and cell may be supported at the top of a tube and light may be directed on to the cell by reflectors carried by a float. This subject-matter does not appear in the Specification as accepted.
Patent GB-473222-A (GB)
Title: Improvements in and relating to cellulosic sheets and films and methods for producing the same
IPC: C08L1/24
Filed: 1936-12-05
Abstract: Viscose is coagulated as a continuous film of a water-insoluble metal cellulose xanthate and the film is stretched transversely and regenerated.  For example, a liquid sheet of viscose is treated with a coagulating non-regenerating <PICT:0473222/IV/1> bath containing zinc, aluminium or lead salts, or a film is first formed from viscose and then converted to the water-insoluble metal xanthate, before stretching and regeneration.  Shrinkage of the regenerated cellulose film is inhibited in the longitudinal direction.  A small amount of a weak acid or of an acid salt may be added to the coagulating or metal bath to prevent precipitation of the metal hydroxides.  The metal bath also may contain a small quantity of another salt such as ammonium chloride, sodium chloride or sodium sulphate.  Examples of suitable baths are given.  The film may be stretched transversely by passing it between bowed expander bars 21 which include non-rotatable parallel shafts 23 and a plurality of interlocking rollers 22 which are rotatably mounted on the shafts 23 and are covered by a smooth yieldable material 24 such as rubber.
Patent GB-324450-A (GB)
Title: An improved device for use in connection with the pouring of lead into the joints ofpipes
IPC: F16L13/12
Filed: 1928-11-16
Abstract: 324,450. Oliver, J. Nov. 16, 1923. Jointing tools and apparatus.-In a joint for pipes wherein fluidtightness is secured by lead poured into the annular space between the pipe ends with the aid of a mould comprising asbestos rope or braided wire a, which is wrapped around the spigot end of the pipe c and pressed against the faucet d' of the other pipe d so as to leave a pouring hole f, the ends of the mould are held together by a clip b connected thereto by a chain g. The clip comprises a pair of pivoted jaws b<1>, b<2> curved outwardly to correspond with the normal shape of the mould at the hole f and provided with raised extensions b<11>, b<22> to accommodate a compression spring e which tends to. force the jaws together.
Patent GB-194765-A (GB)
Title: Improvements in and relating to thermionic valve relays
IPC: H03F3/02
Filed: 1921-12-13
Abstract: 194,765. Pollock, E. Dec. 13, 1921. Thermionic modulating systems.-The output circuit of a low-frequency alternator g, Fig. 1, is controlled by means of two or more interposed diode tubes a, b, which are normally non-conducting because their filaments are cold. A shunt circuit p, p', r, k, across the alternator g, when closed by means of a key k, incandesces the filaments of the diodes through transformers p, s and p', s<1> respectively, whereupon both halfcycles of the power supply are passed to energize the primary p<2> of an output circuit s<2>. A separate microphone circuit may replace the key-controlled shunt circuit. As shown in Fig. 3, the output of a high-frequency alternator g is similarly controlled by means of a separate circuit comprising a direct-current generator g<2>, a rotary interrupter i, and a key k to give tonic train eignals. A low-frequency alternator may replace the generator g<2> and interrupter i. In Fig. 4, a key k energizes the filament of a diode a through a battery e and a rotary interrupter i. Power from a direct-current generator g is thus supplied to the primary p<2> of an output transformer p<2>, s<2>, the power supply being also cut up by the rotary interrupter. The Provisional Specification describes a modification of the arrangement shown in Fig. 4 wherein the key k is replaced by a microphone and the generator g by a battery, the interrupter i being omitted.
Patent GB-322079-A (GB)
Title: Improvements in or relating to control switches for vehicle direction indicators
IPC: B60Q1/42
Filed: 1928-11-16
Abstract: 322,079. Trier, V. A. Nov. 16, 1928. Road-traffic signals on vehicles. - In direction indicators for motor-vehicles of the kind in which a switch for illuminating signs is set by hand and restored to the "off" position by the return movement of the steering- wheel, the switch lever H on being set by hand rotates a spindle P carrying a roller E which is thus moved from the. position shown in Fig. 2 in full lines between two conical terminals C, C<1> to the raised position shown in broken lines between one of the terminals C, C and one of the stop terminals D, D<1>. The lever H is thus lifted so that its spring-supported knob J may be engaged by a part of the steering-wheel L<1> on its return movement, the lever H being thereby restored to neutral. When the wheel is turned from its " mid " position the knob J yields without moving the lever H.
Patent GB-812623-A (GB)
Title: Electric power distribution system
IPC: H01H83/00
Filed: 1955-11-23
Abstract: 812,623. Protective cut-out arrangements. C.T. ELECTRICAL CONTROLS Ltd. Nov. 23, 1955 [Jan. 31, 1955], No. 33594/55. Class 38 (5). In an electric power system having two portions adapted for parallel operation, a circuit-breaking device A is connected for paralleling the portions, the device having operating means 29 connected between one conductor of one portion and an electrically different conductor of the other portion. In the three-wire single phase arrangement of Fig. 5 having transformers C, D supplying loads ZI, Z2, the circuit-breaking device of Specification 812,625 has its contacts 25, 26 and overload-responsive means connected in the paralleling conductors 14, 15 and its operating solenoid 29 and a switch 44 operated by the overload responsive means connected as shown. Under normal conditions the full voltage betwaen the phase conductors is applied to the soleroid 29 which maintains the contacts 25, 26 closed. In the event of an overload condition in one of the portions of the system, the switch 44 is opened by the overload-responsive means to de-energize the solenoid 29 and open the contacts 25, 26. The appropriate supply circuit would then be opened by the blowing of fuses F. After the opening of the contacts 25, 26, the switch 44 would reclose, but the voltage applied across the solenoid 29 would only be that between a phase conductor and earth so that the contacts 25, 26 would not be reclosed until the supply to the disconnected portion is restored. Fig. 6 (not shown) illustrates a three-phase arrangement in which the circuit-breaking device is associated with two of the phases. Specifications 812,622, 812,624 and 812,626 also are referred to.
Patent GB-989651-A (GB)
Title: Improvements in or relating to the separation of slag from molten metal
Inventor: COATES RODERICK BOMFORD
IPC: B22D43/00
Filed: 1962-09-01
Abstract: 989,651. Removing slag from molten metal. BRITISH CAST IRON RESEARCH ASSOCIATION. Oct. 2, 1963 [Sept. 1, 1962], No. 33648/62. Heading BID. [Also in Division F4] A stream of molten metal containing slag is poured into compartment 11, of a separator, which communicates by passageway 14 with compartment 12, compartments 11, 12 having respective outlets 15, 16 from which slag and clean metal respectively overflow, outlet 16 being at a lower level than outlet 15. In use, only one outlet 15 and one outlet 16 are used, the others being blocked. Drain holes 17 are blocked and also channel 18, used only if the metal in passageway 14 freezes. The separator may be a single block 10 of graphite (90% coke, 10% tar), may be coated with another refractory, to resist oxidation, and is buried in a sand-box in use. The separator may be made in two pieces, each containing one compartment 11, 12 and keying together, in which case two qualities of refractory may be used for the two pieces. The separator may remove slag formed when a desulphurizing agent, sodium carbonate, is added to molten iron, or may be the front slagging box used with a continuously tapped furnace employing basic slag.
Patent GB-321334-A (GB)
Title: Production of a bituminous composition
IPC: C08L95/00
Filed: 1928-11-17
Abstract: 321,334. Montgomerie, J. A. Nov. 17, 1928. Grant of Patent revoked. Emulsions, making.-An aqueous emulsion of artificial or natural asphalt, pitch, tar and the like is prepared with the aid of colloidal clay containing a small quantity of magnesium oxide or hydrate. Suitable proportions are 100 parts water, 95 parts bitumen, 5 parts clay and ¢ part magnesium compound. Specification 105,202, [Class 22, Cements &c.], is referred to.
Patent GB-929787-A (GB)
Title: Improvements relating to heat exchangers
IPC: F28D7/08
Filed: 1959-10-05
Abstract: 929,787. Air-heating apparatus. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Oct. 5, 1959 [Oct. 4, 1958; Nov. 15, 1958], No. 33748/59. Classes 64 (1) and 64 (3). A tubular heat-exchanger particularly the convection part of an air heater consists of a heating gas passage containing tube coils connected in pre-assembled groups 15 (Fig. 7), to relatively small inlet and outlet headers 3, 4 (Fig. 1), or 16, 17 (Fig. 7), each tube group comprising one or more tube banks, and each tube bank comprising several coplanar tubes connected in parallel between the headers, the tube banks being disposed in parallel planes extending in the direction of gas flow and spaced transversely across the passage. In the air heater shown in Fig. 1, the tube coils 2 in each group are arranged in two banks, the tubes of which are connected to their respective headers 3, 4 through tubular forked branches to which the corresponding tube ends of each bank are joined, the branch ending on the header side in a short tube 5 which communicates with the header. The branches of each forked member are not in alignment so that the tube coils of the pair of banks forming the group are relatively staggered. The tube assembly shown is arranged in a flue in which heating gases flow upwardly, air or other fluid to be heated flowing through the tubes. The arrangement shown is such that air or other fluid entering the tube assembly through the inlet headers 3 flows first in a general direction in countercurrent and then in a concurrent flow with respect to the direction of flow of the heating gases before reaching the outlet headers 4. The convection air heater of the invention may be associated with a radiant heating section 12, 13, 14 also comprising prefabricated units and arranged in the manner shown in Fig. 7. The duct 18 interconnecting the radiant and convection heating sections may alternatively comprise a plurality of parallel connected ducts (Fig. 8, not shown). Each tube coil may comprise several sections welded together to form the coil and each of a different grade of steel selected in accordance with the working temperature in that part of the flue in which it is situated.
Patent GB-343431-A (GB)
Title: Improvements in or relating to talking picture apparatus
IPC: G03B31/02
Filed: 1929-11-07
Abstract: 343,431. Sound-reproducing apparatus associated with kinematographs. HARRIS, A. W., 76, Brondesbury Villas, Kilburn, London. Nov. 7, 1929, No. 33977. [Class 40 (ii).] Comprises an arrangement of a talking-picture apparatus employing a sound head for reproduction by optical means, in which the sound head is mounted independently of the kinematograph projector and has no driving connection therewith other than by the film. The sound head comprises a rotatable film - band pulley divided into two parts 1, 2 which rotate on ball bearings 3, 4 on a fixed hollow hub 5. Rigidly mounted by a sleeve 6 on the hub 5 is a tube 7 which-fits between the concavo-conoidal surface of the parts 1, 2. The inner end of the tube 7 coincides with a hole in the sleeve 6 and a hole in the hub 5. In this way a light beam from the light source 8 can be projected through the sound record on the divided pulley and the tube 7 to a light-sensitive cell which is supported within the hub 5 by shock-absorbing collars 14. The hub 5 is supported independently of the kinematograph projector by a pedestal 9 to which is connected a bracket 10 to which one end of the hub 5 is secured. The bracket 10 also carries an arm 11 supporting the light source 8 and an oscillatable arm 12 bearing a roller 13 which maintains the film in place. The pulley is not provided with special driving means but is driven solely by the friction of the film, which is set up by the pressure of the roller 13. Reference has been directed by the Comptroller to Specification 328,968, [Class 40 (ii), Phonographs &c.].
Patent GB-408056-A (GB)
Title: Improvements in package wrapping arrangements
IPC: B65D75/68
Filed: 1932-12-02
Abstract: 408,056. Unpacking. WRIGLEY JR. CO., W., 400, North Michigan Avenue, Chicago, U.S.A. Dec. 2, 1932, No. 34134. Convention date, Jan. 22. [Class 94 (i).] An outer wrapper for a package of chewing- gum or other material is provided with an opening strip passing completely around the package near one end and having a projecting tab at one edge of the package. In one form (Fig. 2) the strip S is gummed to the wrapping material before the individual wrappers W are out, while in a second form (Fig. 3) the strip S<1> is attached to the wrapper only at the edge a by the adhesive which seals the wrapper. The edges of the wrapper are cut in a serrated manner, and it is arranged that the serration corresponding to the position of the strip is increased to provide the tab T. The wrapper and strip are made of the material known under the Registered Trade Mark " Cellophane," and the strip is of a colour which is readily visible through the wrapper.
Patent GB-1400508-A (GB)
Title: Method of and apparatus for ctoninuously producing a twisted stranded wire
IPC: D07B5/00
Filed: 1972-07-21
Abstract: 1400508 Wire twisting GRANGES ESSEM AB 21 July 1972 [6 Aug 1971] 34191/71 Heading D1T A twisted, stranded wire is formed by flattening a running single strand wire and cutting the flattened wire into strands, the single strand wire and the combined strands being rotated about the flattening and cutting means to twist the strands together. As shown, flattening rollers 14, 15, cutting rollers 17, 18 and apertured plate 20 are supported within stationary cradle 26 supported by rotating shafts 27, 28. Single wire 13 is fed in a loop which rotates with the shafts and about the cradle to rollers 14, 15, and the strands 19 are twisted together in die 21 due to the resulting wire 22 being fed to winding means via a loop which also rotates with the shafts and about the cradle Wire 22 is also twisted beyond sheave 36. The wire loops need not be arranged diametrically opposite one another, the guide pulleys may be replaced, e.g. by bent tubes, and the twisted wire may be plastics coated.
Patent GB-421922-A (GB)
Title: Improvements relating to the smoothing of glass sheets
IPC: B24B7/24
Filed: 1933-12-05
Abstract: In the smoothing of glass sheets, abrasives are employed which are formed from homogeneous vitrified products such as glass, fused silica or enamels, e.g. alkaline, alkaline earth or lead silicates, these being reduced to the granular state and graded. Three sets of grains may be employed having the dimensions 70 to 100, 45 to 70 and 20 to 45 microns.
Patent GB-1134804-A (GB)
Title: Improvements in and relating to particle size measuring and recording apparatus
Inventor: KNIGHTS PETER BRIAN
IPC: G06M1/10
Filed: 1966-07-29
Abstract: 1,134,804. Counting particles. INTERNATIONAL SYNTHETIC RUBBER CO. Ltd. 25 July, 1967 [29 July, 1966], No. 34245/66. Heading G4D. In particle-sizing and counting apparatus pointers 2, 3 are adjusted so as to align with the periphery of the image of a particle, movement of the one pointer positioning a cam 18 so as to prime one of a set of counters according to the size of the particle, operation of a foot switch 20 then energizing the selected counter. Movement of the pointer 3 is transmitted by wires 8, 14 to sweep cam 18 round a circle of sprung contacts 19 so that two sets such as L2, L3 are closed at any one time. Closure of fast switch 20 then operates totals counter L33 and the earlier of the size counters L2.
Patent GB-310070-A (GB)
Title: Improvements in methods of guarding for overhead electric lines
IPC: H02G7/18
Filed: 1927-12-19
Abstract: 310,070. Fennell, W. Dec. 19, 1927. Transmission conductor arrangements. - Overhead lines are connected by a metal bridge to space two lines at points in a span between two supporting posts, or to form a catch guard beneath a higher live wire to catch and earth cr short-circuit it if it breaks, the bridge being connected to one line directly and to the other through an insulator so that the two lines may in all cases be used to separate conductors. A metal wire or strip B, Fig. 2, may be clamped or bound to one conductor D<1> and may carry at its other end an insulator C which carries a metal part bound to the other conductor D, or which receives and is bound to the conductor D. The metal of the ends of the bridge contacting with the lines is the same as, or electropositive to, the metal of the lines to prevent electrolytic corrosion of the lines. In a single-phase, hightension line, the bridge B may connect two guard wires R, E, Fig. 3, beneath the live line L to earth the line L when it falls, only one guard E then being earthed directly and the other wire R serving as the return lead. In 3-phase lines, the wire L is replaced by two or three live wires connected to the phases, the wire R then serving respectively as the earthed third phase or the neutral. Insulated bridges B may space the three live wires in the above arrangement or the four lines L<1> - - L<3>, N, Fig. 5, of a 3-phase, low-tension system. In the arrangement of Fig. 3, low-tension lines may be supported vertically beneath the lines R, E by insulated bridges or high-tension lines may be so supported, the line L being at low-tension.
Patent GB-905110-A (GB)
Title: Improvements in or relating to cathode ray tube display apparatus
Inventor: WARD JOHN JOSEPH
IPC: G01R13/22
Filed: 1961-06-28
Abstract: 905,110. Cathode-ray tube displays. BUSH & RANK CINTEL Ltd. June 28, 1961, No. 34305/58. Class 40 (7). A cathode-ray tube apparatus comprises means for producing a display in the form of a straight line of which the position, length, and attitude may be altered. Provision is also made for the addition of a second line which is always perpendicular to the first line, is of variable length, and has a variable point of intersection with the first line. A generator 1 produces a repetitive waveform, e.g. a sawtooth, which is fed via a phase-splitter 2 to a sine-cosine resolver 3. The resolver outputs are amplified and a fraction of the outputs is passed to adding circuits 12, 13. Phase sensitive rectifiers 8, 9 also receive the outputs from the resolver 3, a fraction of their outputs being added in circuits 12, 13 to the voltages from the amplifiers 4, 5. The outputs of circuits 12, 13 generate the first line, mentioned above, when fed to the X and Y plates. By varying the tap on resolver 3 the attitude of the line is altered, and the length of the line changes in response to change in the fraction of the voltages taken from amplifiers 4, 5. The line can be displaced from the origin of the display in a direction perpendicular to its length by altering the fraction of the voltages from the rectifiers 8, 9 fed to the circuits 12, 13. The resolver 3 outputs are further fed to amplifiers 14, 15 and a selected fraction of the resultant outputs passed to adding circuits 21, 22. The latter circuits also receive D.C. sine and cosine components derived from a variable D.C. source 18, generator 19, and sine-cosine resolver 20. The outputs of circuits 21, 22, which give the second line, are passed to the deflection plates in alternation with the outputs of circuits 12, 13, switching circuits 23, 24 being provided for this purpose. The length of the second line depends upon the tap setting of amplifiers 14, 15 and the point of intersection with the first line on the setting of the potentiometer 18. The direction in which the second line moves relative to the first depends on the setting of the resolver 20. Usually the second line moves in the direction of the first line.
Patent GB-1476689-A (GB)
Title: Rotary pump of tee vane type having slipper type pumping  vanes
IPC: F01C/
Filed: 1974-08-05
Abstract: 1476689 Rotary positive-displacement fluidmachines TRW Inc 5 Aug 1974 [14 Aug 1973] 34344/74 Heading F1F In a double-acting slipper-vane pump suitable for a power steering system the profile of the inner circumferential surface, or "cam contour", 40 of the casing comprises a "decompression arc" 32 at the leading end of each "inlet arc" 31 and extending between a corresponding "tangent arc" 30 and an adjacent inlet port 28, the spacing of the vanes being such that at least one vane is in register with the tangent arc at all times. The decompression arcs are said to reduce cavitation and also noise due to turbulence created by each vane as it passes between the outlet ports 27 and the inlet ports. Preferably, each decompression arc subtends at the central axis an angle of 10 degrees Œ ¢ to 1 degree, the angles subtended by the other arcs and the ports being as shown. The ports 27, 28 are formed in a housing end-plate, matching ports being formed in an opposite end-plate, Fig. 4 (not shown).