baber/WOPTO huggingface dataset:
Patent GB-464553-A (GB)
Title: Stabilisation of television amplifiers
IPC: H04N5/16
Filed: 1936-07-24
Abstract: 464,553. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE. July 24, 1936, No. 20555. Convention date, July 25, 1935. [Class 40 (v)] In order to prevent picture flicker in a television system the amplifier for the picture signals is compensated against back coupling due to the impedance of the supply source. As shown, the amplifier comprises a preliminary stage 3 coupled to the photo-cell 2 followed by a chain of resistance-capacity coupled amplifiers, the whole being supplied with anode current from a mains rectifier 6 and smoother 7, 33. The output stage 5 of the amplifier is coupled through a potential-divider 16 to a compensating valve 13, the arrangement being such that the anode variations of the valve 13 are equal in amplitude but opposite in phase to those of the valve 5. Under these conditions the signal current in the valves 5, 13 does not produce any voltage drop in the supply unit, and is therefore not fed back to the grids of earlier valves through the lead 8. Grid bias for the valves 5, 13 is fed from a resistance 23 through a filter 34, 35. Further resistance-condenser filters 9, 10 ; 11, 12 may be employed between the anode lead 8 and the earlier valves. The valve 13 may be used to give a negative picture if the valve 5 gives a positive picture. Loss of high frequencies in the coupling between the valves 5, 13 may be controlled by a variable condenser 21. The Specification as open to inspection under Sect. 91, includes the method of decoupling for screen-grid valves described in Specification 468,350. This subject-matter does not appear in the Specification as accepted.
Patent GB-1520964-A (GB)
Title: Processes of applying urethane top coatings to resilient floor coverings
IPC: D06N3/14
Filed: 1976-05-24
Abstract: 1520964 Preparing floor covering material CONGOLEUM CORP 24 May 1976 [23 May 1975] 20564/76 Heading B2E A resilient floor covering material is prepared by treating a substrate, e.g. of felt, woven fabric or knitted fabric made of wooly rayon, nylon polyesters, polyolefins, asbestos, glass wool, mineral or slag wool or metallic threads optionally impregnated with a vinyl resin, a butadiene styrene resin or other thermoplastic or thermosetting resin, with a foamable material, e.g. PVC homo- or copolymer, polyethylene, polypropylene, polystyrene, phenolic resin, urea resin, synthetic rubber, urea formaldehyde and neoprene, gelling and printing. A polyurethane wear layer is applied to the gelled and printed layer as a composition of viscosity 40-100 centipoises by reverse roll coating using a ratio peripheral speed casting roll: peripheral speed back up roll of 0.8:1 to 1.1:1 and the layers are foamed and cured so that the curing of the polyurethane does not exceed 80%.
Patent GB-975892-A (GB)
Title: Turbine rotors
Inventor: KELLETT ERIC
IPC: F01D5/04
Filed: 1960-06-13
Abstract: 975,892. Turbine rotors. C. A. V. Ltd. June 12, 1961 [June 13, 1960], No. 20646/60. Heading F1T. A radial flow turbine rotor has radially extending blades 4 intersected by and integral with a hollow nose 5 which has a concave outer surface and an inner surface such that its axial depth increases with radius. The nose is joined at its circumference to a toothed member 7 so as to provide outlets between them, the toothed member 7 having a hollow hub 9 to receive a hollow shaft 10. The part of the blades 4 inside the nose serve as impellers to draw air through the shaft 10 into the hollow nose for cooling.
Patent GB-1189272-A (GB)
Title: A Device for Scanning, Storing, and Punching Value Indications Formed on a Tape Type Data Carrier
Inventor: RITZERFELD GERHARD
IPC: G06K1/18
Filed: 1968-05-01
Abstract: 1,189,272. Tape to card converters. G. RITZERFELD. 1 May, 1968 [16 May, 1967], No. 20710/68. Heading G4M. Rows of data sensed from a punched tape are stored in a relay decoder/store, and are read out sequentially in decoded form in synchronism with the advancement of a card through a punching station by way of a rotary switch coupled to the card feeding mechanism. The store has two sections, one for " heading " data to be punched in common on all cards, and one for line data which is updated by reading a new section of tape. After punching a card, feeding of the next tape section is initiated when a new card arrives at the punching station, and continues until an " end of line " code is read, punching of the new card taking place concurrently but independently.
Patent GB-333359-A (GB)
Title: Improvements in self-acting mules with several spindle speeds
IPC: D01H3/06
Filed: 1929-07-05
Abstract: 333,359. Sõchsische Maschinenfabrik vorm. R. Hartmann Akt.- Ges. Feb. 20, 1929, [Convention date]. Mules and twiners.--In a self-acting mule with several spindle speeds, of the type wherein the main or rim-shaft 5 is driven continuously in the same direction by an electric motor 1 through gear-wheels 2, 3, 4, the mule being equipped with a differential gear 16 on the shaft of the tinroller 17, for driving the spindles 9 and the backing-off motion, the small pulley 7 on the rim-shaft 5 for the slower speed is driven by a ratchet-wheel 6 keyed on the shaft 5, and a pawl 8, while for the faster speed the clutch-member 14 is moved to engage the member 12 coupled to the larger pulley 13, the pawl 8 being disengaged by a spring device from the ratchet wheel 6.
Patent GB-261116-A (GB)
Title: Improvements in and relating to sensitive electrical regulating or indicating devices
IPC: G01K7/02
Filed: 1925-08-19
Abstract: 261,116. Foster, C. E. Aug. 19, 1925. Pyrometers.-An electrical regulating or indicating device employing a thermocouple is provided with means for operating an alarm and/or control automatically on failure of the thermocouple. The thermocouple 1, 2 has its hot junction at 3 and its cold junctions at 4, 5, and is connected to a milli voltmeter comprising an adjusting resistance 8, control springs 9, 10 and moving coil 11. The junction 3 is subjected to heat from an electric furnace, and the temperature is indicated by a pointer such as 16. The pointer is periodically depressed by a presser bar carrying a contact 19 so as to complete a circuit at a predetermined temperature and actuate an alarm and/or automatic control. To provide for breakage or failure of the thermocouple, an additional circuit comprising a battery 15 and resistance 14 is connected at 4, 5. The. resistance 14 is relatively high compared with all other resistances, and the current from the battery only affects slightly the zero setting of the voltmeter, and most of this current passes through the low resistance 1, 3, 2. If the thermocouple breaks, the whole current from the battery is diverted through the millivoltmeter, causing an increased deflection of the pointer and completion of a circuit through contact 21, which actuates an alarm and/or reduces or cuts off the current to the furnace.
Patent GB-738007-A (GB)
Title: Improvements in and relating to apparatus for manufacturing stationery units comprising an envelope having a sheet or strip of paper attached thereto
Inventor: WOODFIELD THOMAS ARTHUR
IPC: B31B27/00
Filed: 1952-08-19
Abstract: 738,007. Attaching paper strips to envelopes. LAMSON PARAGON SUPPLY CO., Ltd. Nov. 19, 1953 [Aug. 19, 1952], No. 20838/52 Class 73. [Also in Group XVI]. Envelopes, e.g. pay envelopes, have adhesively secured to them paper strips, e.g. giving details of wages, deductions, &c., in a machine through which a paper web a is intermittently fed over a table 2, envelopes b carried in a magazine 6 being fed by a reciprocating suction device 8, 14, (see Group XVI) to bring each envelope in turn over the web a on the table 2 during a dwell in the feed movements of the web, vertically reciprocating presser arms 22 then engaging the envelope to press it on the web and a vertically reciprocating knife 27 or other severing device subsequently severing the web between adjacent envelopes to divide it into a series of separate strips each having an envelope attached thereto. The web may be provided with strips or patches of water soluble adhesive which are moistened by pads 20 or the envelopes or web may be coated with a heat sensitive adhesive and a H.F. heating unit provided to engage an envelope on the web. Instead of the reciprocating knife 27, the web may be severed along scored or weakened lines by means of a burster unit comprising pairs of rollers rotated at different speeds whereby the web is drawn taut against a blade located between the pairs or rollers.
Patent GB-637123-A (GB)
Title: Improvements in or relating to winches
IPC: B66D1/20
Filed: 1947-07-31
Abstract: 637,123. Winch drums. A. C. E. MACHINERY, Ltd., and STILES, B. L. July 31, 1947, No. 20850. [Class 78 (v)] A winch (Fig. 1) comprises a framework 1, 2 within which a winding drum 3 having a flanged rim 9 is mounted in eccentric bearings 5 and is provided with manual means (by arm 18) for moving its centre of rotation to bring the interior of said rim into frictional engagement with a driving disc 10, the manual means being operated by counterweight 19 to move the rim out of engagement with the disc and to bring its exterior into contact with a brake 14. As shown, drum 3 is fixed on shaft 4 which is eccentrically mounted in bushes 5, 6, which latter are rotatable in plates 1, 2 of the framework by means of counterweighted arms 18. The drum 3 has flanged rim 9 driven by friction disc 10, the latter being mounted on driving shaft 11 which is journalled in a separate frame carried by side brackets 20. Side brackets 20 are adjustably mounted by nuts-andbolts 22 slidable in slots 21 in plate 1 so that driving disc can be adjusted in position to compensate for wear. Also brake 14 is mounted on an eccentric bush 15 carried by a pin 16 so that it too can be adjusted for wear. Operation. Drum is normally braked by brake 14. Operator lifts arm 18 to lift the drum so to free the latter from brake 14 and to bring it into driving contact with friction drive 10. Operator half-lowers the arm 18 to move drum out of contact with friction drive 10 and out of contact with brake 14 and so allows the rope to pay off the drum freely.
Patent GB-706182-A (GB)
Title: Improvements relating to television systems
Inventor: JAMES IVANHOE JOHN PENFOUND
IPC: H04N7/08
Filed: 1950-08-24
Abstract: 706,182. Television. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 20, 1951 [Aug. 24, 1950], No. 20922/50. Class 40 (3) In a television system for transmitting simultaneously on the same carrier wave picture signals of comparable band width derived from at least two different pictures, the carrier wave is modulated in cyclic order by the picture signals derived from said different pictures, the repetition frequency of said cycles being high compared with the line frequency. Thus signals from two different pictures interspersed with line and frame signals derived from a common generator are sampled alternately so that 200 spaced signals of one programme interspersed with 200 spaced signals of the other programme occur between line synchronizing pulses. The timing of the sampling is changed periodically by 180 degrees to effect interlacing and the Specification describes two sequences for use with normal odd-line interlaced signals to provide interlacing of the samples of one picture produced in one line and staggering of the samples in adjacent lines. Four frames are required to produce a complete picture. Selection of a desired picture at a receiver is effected by a gating device opened at the correct times. In order to change the phase of the gate operation in accordance with the interlacing operation at the transmitter, a special synchronizing pulse may be added to the transmitted signals. Alternatively the change may be controlled by modifying the duration of the line synchronizing pulses. Reference is made to a sampling operation taking place at a large odd multiple of half the line frequency. The two pictures may be those forming a stereoscopic pair. Sound signals associated with the two pictures may also be interspersed with the picture signals. To reduce the cross-talk produced between pictures the gating device operates for only a narrow fraction of the cycle, and any residual cross-talk is reduced by delaying a certain amount of the mixed signals in a high pass filter by a half period of the gating frequency and mixing it with the undelayed signals in suitable phase and amplitude so that the undesired programme components are opposed and reduced.
Patent GB-614571-A (GB)
Title: Collapsible stoves
IPC: F24B1/20
Filed: 1946-07-12
Abstract: 614,571. Collapsable stoves. SPEAKER, J. W. July 12, 1946, No. 20931. [Class 126] A collapsable stove comprises a rectangular pan 1, on the bottom of which fuel tablets T are burnt, embraced by a pair of channel members 5 which, when collapsed, cover the pan 1 and, when operative, act as legs and supports for a receptacle C. The channel members 5 are pivoted to the pan 1 at points 4 intermediate their sides and when collapsed are held in position by ribs fitting into recesses 7 in the sides of the pan 1 in which the fuel tablets T may then be stored.
Patent GB-238892-A (GB)
Title: Improvements in buckles for suspenders and like articles
IPC: A41F11/12
Filed: 1925-08-21
Abstract: 238,892. Hatheway, W. E. Aug. 21, 1924, [Convention date]. Clamps, eccentric.-Relates to buckles for suspenders and like articles and of the type in which teeth are formed on the inner edge of the opening in the floor of the buckle frame and at right-angles thereto to engage the webbing when forced thereagainst by the floor clamping- sections. The floor of the buckle frame has upturned ears, and a lever supporting-bar spaced therefrom to form a slot, and elongated webbing- clamping sections having cranked teeth on their free edges, which are adapted to be offset temporarily above or below the floor to form a stop for the end of the webbing and then to be forced towards the floor to clamp the end of the webbing. The buckle frame consists of a single piece of sheet metal comprising the floor 1, ears 2, and bar 3, on which is journaled the usual lever 15 the blade 15<a> of which is provided with teeth 17. In Figs. 2 and 3 the clamping-sections 9, 10 are shown depressed below the floor with their teeth 11, 12 at right-angles to the sections to form claws to hold the webbing 18, and the ears 2 are set at an obtuse angle to the floor 1. The sections 9, 10 are closed with the end of the webbing anchored thereto, and the remaining portion of the webbing 1 is passed around under the sections, over the upper surface of the floor, and under the grip of the lever blade 15<a> as shown in Fig. 5. With the ears 2 erect and the clamping-sections elevated above the floor 1 as shown in Figs. 6 and 7, the webbing 18 is first passed over the floor with its end abutting the base of the upturned sections, which are then closed down on to the underlying end of the webbing, and the webbing is then carried over a portion of the upper surface of the buckle frame and under the lever 15, around the edge of the frame, and returned to form the loop 19, thence over the frame and under the grip of the lever 15. The ears 2 are reinforced at their base by a small fillet a, the base of the ears and the fillet being practically in line with the inner edge b of the floor. The sides c are inclined so as to be concealed within the webbing.
Patent GB-835530-A (GB)
Title: Stable resin latices
IPC: C08F4/30
Filed: 1958-06-30
Abstract: <PICT:0835530/IV (a)/1> <PICT:0835530/IV (a)/2> Stable resin latices of high solids content are produced, in the absence of emulsifying agents, in a process comprising selecting a monomer or monomers from (a) lower aliphatic vinyl esters, i.e. vinyl acetate, propionate, n- and iso-butyrate; (b) mixtures of said lower aliphatic vinyl esters; and (c) mixtures of said lower aliphatic vinyl esters with one or more monomers selected from (i) lower alkyl maleic esters, i.e. the esters and half-esters formed by reaction of maleic acid with ethyl, propyl, n- or iso-butyl, hexyl, ethyl-hexyl or octyl alcohol; (ii) lower alkyl fumaric esters i.e. the esters and half-esters of fumaric acid of the same alcohols as in (i); and (iii) higher aliphatic vinyl esters, i.e. vinyl valerate, caproate, heptanoate, 2-ethyl-hexoate, octanoate and pelargonate, the minimum proportions by weight of lower aliphatic vinyl esters in mixtures (c) being 30% for vinyl acetate, 45% for vinyl propionate, and 50% for vinyl n- and iso-butyrates; adding the monomer or monomers continuously in step-wise addition to an aqueous solution containing a polymerisation initiator selected from alkali metal and ammonium persulphates and a protective electrolyte selected from water-soluble, oxidation- and hydrolysis-resistant, alkali metal and ammonium salts of inorganic and saturated organic acids containing at least two oxygen atoms in the acid radical, the concentrations of persulphate and protective electrolyte being such that when plotted as in Fig. 1 they lie within the area ABCDEFA; and maintaining the reaction mixture at a temperature above a minimum between 68 DEG  C. and 77 DEG  C. as indicated in Fig. 2. The function of the protective electrolyte is to stabilize the latex of polymer particles.  Specified electrolytes are sodium and potassium carbonates, bicarbonates, bisulphates, phosphates and borates, and also sulphates and nitrates (especially in admixture with salts of weak acids).  Alkali metal and ammonium salts of the lower saturated monocarboxylic and polycarboxylic acids may be used, of which acids many examples are given and of their sulphonated and chlorinated derivatives.
Patent GB-959889-A (GB)
Title: Tube making machine
Inventor: JENSEN ERLING
IPC: B21C37/12
Filed: 1959-06-18
Abstract: 959,889. Coiling helically jointed tubes; seaming. SPIRO INTERNATIONAL A.S. June 17, 1960 [June 18, 1959], No. 20985/59. Addition to 830,504. Headings B3A, B3E and B3J. An improvement in or modification of the machine for producing helical lock seamed tubing as claimed in the parent Specification comprises either (a) the provision of an inside roll and, co-operating therewith, an outside spool whose axis is radial to the coiling head, which together give an initial pinching to the mating flange and channel at the edges of the strip, or (b) carrying the rollers, between which the mating flange and channel are pinched into the finished helical lock seam, by a unitary mounting or (c) the provision of guide and support means for the finished tube comprising a longitudinal rotatable roller and an abutment rod parallel and adjustable laterally relative thereto. Strip 4 is pushed by rollers 3, which form a channel 6, Fig. 7, along one edge of the strip and a flange 5 along the other edge. As the strip 4 enters a helically slotted cylindrical forming head 1 the flange 5 is bent over to 45 degrees by a spool 7 having a reduced diameter neck 13 and freely rotatably supported in a bar 21 axially adjustable along a lower mandrel bar 12 extending into the head 1. The spool 7 cooperates with the edge of a guide plate 2 to bend the flange 5. The bar 12 also carries a roller 14 which co-operates with a spool 8 to pinch the mating flange 5 and channel 6 together at an angle of 45 degrees. The spool 8 is carried on a plate 16, Fig. 5, pivoted at 17 and is adjustable laterally by a handle 16a on the plate 16. The mating channel 6 and flange 5 is finally pinched over between a roller 9 supported on a mandrel bar 11 inside the head 1 and a roller 10 supported outside at a location of 90 to 180 degrees from the beginning of the helical slot in the head 1. The rollers 9, 10 may be carried by a U-shaped bracket 28, Fig. 8, and mounted in eccentric bushings rotatable to adjust the rollers, by levers 31a, 32a. The seamed tube is guided from the head 1 by freely rotatable guide tubes 36, Figs. 1, 10 and by a laterally adjustable guide rod 38. When the leading end of the tube engages a switch a saw 42 is operated to sever the tube. The finished tubes are displaced on to racks 43. Lubricant is fed to the inner surface of the head 1. Specification 882,925 also is referred to.
Patent GB-427711-A (GB)
Title: Method of producing high-emission thermionic cathodes
IPC: H01J9/04
Filed: 1933-07-26
Abstract: 427,711. Thermionic cathodes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, and WALDSCHMIDT, E., 49, Klingsorstrasse, both in Steglitz, Berlin. July 26, 1933, No. 20998. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 31, 1934]. [Class 39 (i)] [See also Group XXXVI] A high-emission thermionic cathode is produced by coating a tungsten filament electrolytically with a layer of barium tungstate. The coated filament is mounted in the discharge tube and, after de-gassing and heating, an alkaline earth metal is applied thereto by atomization, the coating being thereby converted into an oxide.
Patent GB-722102-A (GB)
Title: Improvements in or relating to circuit arrangement for employment in telephone installations for the selection of line groups
IPC: H04Q3/00
Filed: 1951-09-05
Abstract: 722,102. Automatic exchange systems. STRUB, R. Sept. 5, 1951, No. 21006/51. Class 40 (a). Each selector of three or more groups of selectors, i.e. line finders, preselectors or numerical selectors, is provided with two wiper sets, one serving a main contact field and the other an auxiliary contact field, the partial multiple connecting the main fields of a selector group being multipled to the partial multiple connecting the auxiliary fields of the next group and the partial multiple connecting the main fields of the last group being multipled to the partial multiple connecting the auxiliary fields of the first group. Each group such as Tn of 100 subscribers' lines can be reached over the main contact field of one group LWn of final selectors or the auxiliary contact field of another group LW1. The preceding stage consists of 200-point group selectors such as 111GW having 20 outlets from each decade gwdl . . . gwdn, the first ten or the odd outlets being connected to the main wiper set 1<1> . . . n<1> of one final selector group and the last ten or the even outlets being connected over wiperswitching relays U1 . . . Un and their contactsu1 . . . un connecting up the auxiliary wiper set 1<11>. . . n<11> of selectors of another group.
Patent GB-1105572-A (GB)
Title: An electromagnetic flow-meter
Inventor: STERU MARIUS
IPC: G01F1/60
Filed: 1965-05-18
Abstract: 1,105,572. Induction flowmeters. COMPAGNIE GENERALE d'ELECTRONIQUE INDUSTRIELLE LEPAUTE. May 18, 1965, No. 21100/65. Heading G1N. In an electromagnetic flowmeter, a tube 16 carrying the liquid to be measured has a magnetic field applied across it by coils 5a, 5b, and pick-up electrodes 7a, 7b, are connected via a two-core screened cable, B, to a transistorized, differential, feedback amplifier, A, a feedback loop of which contains the capacity of the cable. The arrangement maintains a high input impedance to the amplifier, the outputs from electrodes 7a, 7b being fed to cable conductors 1 and 2 and thence to the amplifier inputs 24, 25, while the screens 1a, 2a of the respective cable conductors are connected to feedback lines 27, 26 of the amplifier. An overall cable screen 3 is connected to a third, reference, electrode, 18, on the tube 16, and to the amplifier earth line. A signal proportional to the applied magnetic field is derived by a circuit, D, from the A. C. source 17 which supplies the coils 5a, 5b, and this signal appears at 14 where it is compared with the output signal, at 13, of the amplifier in a comparison means (not shown); this eliminates the effect of field variations upon the flow measurement signal. Correction is also applied to the output of the electrodes 7a, 7b, by a circuit consisting of resistors 6a, 6b and a coil 4 mounted inside the flowmeter casing 8 with an associated moving core 21, this circuit serving to compensate for noise signals introduced, by the field, in the connecting leads to the electrodes.