baber/WOPTO huggingface dataset:
Patent GB-625908-A (GB)
Title: Multi-range oscillator system
IPC: H04B1/26
Filed: 1946-08-01
Abstract: 625,908. Valve generating circuits. RADIO CORPORATION OF AMERICA. Aug. 1, 1946, No. 22981. Convention date, Aug. 1, 1945. [Class 40 (v)] In an electron coupled oscillator covering two frequency ranges one relatively high with respect to the other, the tuned circuit for the higher frequency range is coupled to the valve by means other than a switch, but is rendered ineffective when the lower frequency tuned circuit is connected. Fig. 1 shows a superheterodyne receiver for medium frequency broadcast signals and V.H.F. F.M. signals. The receiver comprises alternative signal sources 6, 7, R.F. amplifier 1, mixer 2, I.F. amplifier 3, demodulator 4 and local oscillator 5. Tuning and range switching controls are ganged as indicated by the dotted lines. The local oscillator is of the electron coupled type and the higher frequency tuned circuit 26, 27, 20, 19<1> is connected to the valve in the Hartley manner. The grid circuit includes a small condenser 23 whose reactance is neutralised at the high frequencies by series inductor 24 and whose reactance at the lower frequency range is very high. For operation in the lower frequency range a separate tuned circuit 37, 40, 41 is connected to the same electrodes of the valve, but in the Colpitts manner. This circuit has a low impedance at the high frequencies and prevents oscillation in that band, but the higher frequency circuit does not similarly effect the low frequency circuit because of the high impedance of grid condenser 23. In an alternative arrangement of the electron coupled local oscillator, Fig. 2, the high frequency tuned circuit 20, 26, 27 is connected between the grid and cathode in series with a small grid condenser 23 and the feedback is applied by a reaction coil in the circuit of the grids 28. Two lower frequency ranges are provided and the respective tuned circuits 50, 50<1>, 70 and 90, 91, 70 are connected as before in the Colpitts manner and switched into circuit by switch 25. An additional byepass and padding condenser 61 is connected into circuit on the lowest range by switch 60.
Patent GB-702010-A (GB)
Title: Improvements in and relating to textile ring spinning frames
IPC: D01H5/68
Filed: 1951-10-03
Abstract: 702,010. Suction end-catchers; introducing rovings into twist tubes. ZINSER, E., WAHL, H., ZINSER, K., and REPKY, H. [trading as SUEDDEUTSCHE SPINDELWERKE ZINSER DIPL. ING. H. ZINSER]. Oct. 3, 1951 [Oct. 4, 1950], No. 22993/51. Class 120(2) In a ring spinning frame having an endsuction device and a pneumatic roving introduction arrangement for twist tubes, separate fans are provided to create the suction and air blast, both fans being mounted on the same shaft. A suction fan 4 may be located facing a passage 1 with a replaceable filter 3 interposed between a collecting chamber 2 and the fan 4, which expels air through a pipe 5. Some of the air expelled through the pipe 5 is sucked into a box 6 by a fan 7 and expelled along a conduit 8 to the injector nozzles of twisttubes.' Both fans 4, 7 are mounted on a shaft 13 driven through pulleys 14, 15 from a motor 16. For obtaining a strong injection at the twist tubes each nozzle has a divergent end..
Patent GB-264757-A (GB)
Title: Improvements in and relating to springs
IPC: A47C27/06
Filed: 1926-09-17
Abstract: 264,757. Slee, A. L. Sept. 17, 1926. Spring surfaces.-Springs for mattresses and like spring surfaces are constructed of a number of pairs of radially arranged bent wire springs 4 connected by upper and lower caps 10. In a vertical plane the arms of the springs converge outwardly and at the point of convergence are formed with a coil 5, the coils being interconnected by an indented spacing-ring 6. Adjacent pairs of the radial springs are formed from one length of wire, the loops 9 at the upper and lower ends being engaged by tongues or hooks on the caps. The springs are mounted within a mattress casing which may also be stuffed.
Patent GB-638353-A (GB)
Title: Improvements in or relating to hydrocarbon oil blends having improved viscosity-temperature characteristics
IPC: C10M163/00
Filed: 1946-08-06
Abstract: The viscosity index of lubricating oils formed by adding thickening polymers such as polybutene, polyacrylates, or aliphatic-aromatic condensates to a hydrocarbon base oil is improved by adding up to 50 per cent of the weight of the blend of an oxyester which is a non-solvent for such polymers below 110 DEG  F., but an appreciable solvent above that temperature to reduce substantially the viscosity of the blend at temperatures below 100 DEG  F.  Preferably from 1 to 5 per cent of the polymer is added and from 4 to 20 per cent of a high boiling aliphatic oxyester such as triethylene glycol di - 2 - ethyl butyrate, dibutoxyethyl phthalate, or butyl acetyl ricinoleate. Other specified oxyesters which may be added are diethylene glycol mono laurate, glyceryl mono oleate, diethylene glycol mono oleate, butoxy ethyl stearate, and methoxy ethyl oleate.  In one example, a blend of hydrocarbon oil with 2 per cent of polybutylene of 13,000 M.W., having a viscosity index of 128, is mixed with 36 per cent of dibutoxyethyl phthalate, giving a mixture having a viscosity index of 171.7.ALSO:The viscosity index of lubricating oils formed by adding thickening polymers such as polybutene, polyacrylates, or aliphatic-aromatic condensates to a hydrocarbon base oil is improved by adding up to 50 per cent of the weight of the blend of an oxyester which is a non-solvent for such polymers below 100 DEG  F., but an appreciable solvent above that temperature. Preferably from 1 to 5 per cent of the polymer is added and from 4 to 20 per cent of a high boiling aliphatic oxyester such as triethylene glycol di-2-ethyl butyrate, dibutoxyethyl phthalate, or butyl acetyl ricinoleate. Other specified oxyesters which may be added are diethylene glycol mono-laurate, glyceryl mono-oleate, diethylene glycol mono-oleate, butoxy-ethyl stearate and methoxy-ethyl oleate.
Patent GB-1285327-A (GB)
Title: Method of preparing a cotton web
Inventor: SERVIERE HUBERT DE LA
IPC: D04H1/06
Filed: 1971-04-19
Abstract: 1285327 Cotton web; treating fibres H DE LA SERVIERE 19 April 1971 [9 March 1970] 23422/71 Headings D1F D1R A method of preparing a self-supporting raw cotton web comprises wetting a web of raw cotton fibres with a solution of a wetting agent for the fibres, and compressing the web to remove excess solution. In the method described, a web 12 of cleaned raw cotton fibres is carried on belt 1 into a bath 10 of wetting agent solution, which may be a non-ionic surfactant, and is compressed between belts 1, 2 and rollers 5, 7 while being withdrawn from the bath. Guide rolls 13, 14 serve to squeeze remaining excess solution from the web. The belts may be made of perforated metal. The solution is preferably maintained hot, e.g. at a temperature of from 50‹C to 70‹C. The web may subsequently be boiled, bleached washed and dried to from a cotton felt.
Patent GB-313807-A (GB)
Title: Improvements in or connected with silencers for internal combustion engines
IPC: F01N1/08
Filed: 1928-08-14
Abstract: 313,807. Maffey, P. J. Aug. 14, 1928. Exhaust silencers.- Each exhaust cutlet 2, 3, 4 is provided, immediately adjacent the engine cylinder, with a flange 5, 6, 7 near each of which a baffle 8, 9, 10 is arranged so as to form a narrow radial passage through which the gases flow into a chamber 11 whence they are discharged to atmosphere through outlets 13, 14. The centre parts of the discs are preferably domed, and the associated parts of the flanges shaped accordingly. The domes may be replaced by substantially conical portions with concave sides. The distance between each flange and its baffle may be varied. The flanges may be formed' either on a plate 1 secured to the cylinders, or integrally with the cylinders. The sides of the exhaust chamber may be lagged or utilized for heating the air supply to a carburettor, or the mixture flowing therefrom.
Patent GB-337418-A (GB)
Title: Method of preparing dull artificial silk
IPC: D01F11/02
Filed: 1929-07-31
Abstract: 337,418. Naamlooze Vennootschap J. A. Carp's Garenfabrieken. May 24, 1929, [Convention date]. Yarns &c., treating with liquids.-Artificial silk is given a dull lustre by treatment with a silicofluoride solution under such conditions that silicic acid is produced by hydrolysis and partly incorporated in the silk in such a way that it cannot be washed out with water, dilute acids, or soap solutions. In an example finished artificial silk such as viscose silk is immersed in cold magnesium silicofluoride solution and the. temperature is gradually raised to 70 or 90 C. The silk is washed and may then be dyed. The treatment is applicable to other forms of artificial silk, such as cuprammonium silk or cellulose acetate silk.
Patent GB-583746-A (GB)
Title: Improvements in welding machines
IPC: B23K11/06
Filed: 1944-11-27
Abstract: 583,746. Welding. BARTON CONDUITS, Ltd., and PRICHARDS, A. Nov. 27, 1944, No. 23558. [Class 83 (iv)] In a machine for welding longitudinally seamed tubes, pipes or the like of the kind seamed tubes, pipes or the like of the kind comprising a pair of rotatable electrodes connected to the terminals of a transformer secondary liquid such as mercury, a pair of conductors of large section are directly connected to the feet of the secondary coils of the transformer and extend longitudinally beyond the transformer to carry the electrode assembly. The transformer may be pivoted to enable the welding pressure and position to be controlled. The transformer 5, Fig. 1, is contained in a rigid structure comprising side plates 7, 8 affixed to angles 9, 10. The lower angles 9 are connected to a triangular framework 11 which is supported by bearings 12 on a bed 13. A bracket 39 carries a reduction gear 41, 42 driven by a hand wheel 43 and the spindle 40 of the gear is connected to a screwed pin 44 which engages a nut 45 pivoted in a bracket 46 on top of the transformer to orientate it to the required position and pressure. Brackets 25 are bolted to but insulated from the conductors 16 and carry the bearing for a spindle 23, Fig. 3, on which is mounted on an insulating sleeve 26 a pair of copper contact rings 27 having V- section annular grooves to co-operate with V-section ribs in a pot formed in the conductors. Mercury fills the spaces 35 between the ribs and the disc to provide a continuous circuit to the electrodes as they rotate under influence of the tube 20 being welded, which is held in correct alignment by horizontal rollers 22. The electrode discs 19 with an insulating ring between are clamped between flanges in a rebate on the inner faces of the contact rings and secured by insulated bolts. The spindle 23 has an axial bore 36 to conduct coolant to the electrode discs through ducts in the contact rings. The conductors 16 are secured by bolts 15 to the feet of the transformer secondaries 6 and may also be keyed to the feet at 18 to ensure parallel relations between the conductors and length of the transformer. Through bolts 17 may draw the separate rows of feet together, and means for adjusting the conductors to or from one another, thereby controlling the distance between electrodes, may be provided by bolts 47, Fig. 1, contained in an abutment 48 on the bed screwed into the conductors and secured by a lock-nut on the side face of the conductor. Specification 517,714 is referred to.
Patent GB-1491128-A (GB)
Title: Adjustable stop device for a part to be worked by a machine-tool
IPC: B21D11/22
Filed: 1975-05-30
Abstract: 1491128 Gauging stops PROMECAM SISSON-LEHMANN 30 May 1975 [10 June 1974 15 Oct 1974] 23643/75 Headings B3E and B3W An adjustable gauging stop, e.g. for a metal sheet on a bending press or shearing machine, comprises a reciprocable carriage 5 supporting work stops 3, a rotary drum 13 having a series of adjustable abutments 14, a movable member 15 with which the abutments register in sequence, and a speed reduction mechanism coupling the carriage to the movable member, whereby the movement of the carriage exceeds that of the member in fixed ratio. In the figures, the carriage 5 is movable by jack 11 along rod 8 and rail 10 on a bracket 6 fixed to a lower bending die 2. The rotary drum 13 with adjustable studs 14 rests on rollers 16a (not shown) one of which is indexable by motor 17 to being each stud in turn opposite a member 12 slidable in bracket 6. The positions of studs 14 are adjustable collectively by sleeve 18 and set screw 20. The speed-reduction mechanism is a pair of gear-wheels 21a, 21b, fixed together and freely rotatable in the carriage, one pinion 21a meshing with a rack 23a fixed to bracket 6, a and the other 21b meshing with a rack 23b on member 12. Contact between an abutment 14 and member 15 operates a microswitch 29. In operation, after a bend is made, jack 11 withdraws the carriage and stops 3 from the work, this withdrawing member 15 from abutment 14a. Consequent disengagement of switch 29 causes indexing of drum 13 to its next operative position, detected by the next operative abutment 14 contacting a switch (not shown) to stop motor 17, and also cause jack 17 to return the carriage and stops 3 to their new gauging position. The drum also operates contacts 30 which control a sequence indicating system operating by binary code. The drum 13 is readily replaceable by another drum to set up a different sequence of gauging positions. In another embodiment, Fig. 5 (not shown), the speedreduction mechanism is a wedge device, the reduction ratio being determined by the slope of the wedge.
Patent GB-1007250-A (GB)
Title: A rotary internal combustion engine
IPC: F02B53/08
Filed: 1963-06-13
Abstract: 1,007,250. Rotary internal combustion engines. R. L. TERRY. May 28, 1964 [June 13, 1963], No. 23697/63. Heading F1F. A rotary I.C. engine comprises first and second stage compressor chambers 3, 4, Figs. 1 and 2, and a combustion chamber 2, Fig. 3, with in each of which is eccentrically and rotatabily mounted a rotor having vanes slidably mounted in radial slots and a distributing valve 5 located between the second stage compressor chamber 4 and the combustion chamber 2 An air/fuel mixture when operating as a four-stroke "Otto" cycle engine or air when operating as a compression-ignition engine is sucked into the chamber 3 through ports 9 and after compression by the rotor is discharged through a port 6 to the chamber 4 where it is further compressed. After the further compression, the charge is discharged through a port 7 into a recess 31 in the valve cylinder 29 formed with longitudinally extending passages 33 which at the mid-length of the valve cylinder communicate with pairs of radial passages 30, so that on rotation of the valve cylinder the passages 30 are sequentially brought into communication with a port 8 opening into the combustion chamber 2. At a point 34 in the chamber 2 is fitted a spark-plug in the case of an "Otto" cycle engine or a fuel-injector in the case of a compression-ignition engine. The expanding gases which are finally exhausted through ports 10 drive the rotor 12 and with it the first stage compressor rotor 13 and through 1:1 ratio gearing 26b, 26a the second stage compressor rotor 27 and the valve cylinder 29. The timing of the closure of the port 8 in relation to the rotation of the rotor 12 may be adjusted by the vertical adjustment of a wedge 36, Fig. 4, which in co-operation with a wedge 38 secured to the engine casing 1 moves a key in a helical key-way 35 to axially move the gear 26a and rotate the shaft 25 to which the valve cylinder 29 is secured. Cam rollers in the bottom of the vane slots in co-operation with a cam groove together with centrifugal force urge the vanes of each of the rotors sealingly against the inner wall of its respective chamber. Lubrication may be provided by the use of a petrol/oil mixture or by forced lubrication. The engine may be water cooled and a thermally insulating gasket provided between the combustion chamber and the two compression chambers. Any build up of carbon in the combustion chamber is removed by the vanes rotating therein. A by-pass channel 40 may be provided in the wall of the chamber 2 so that after the engine has been started the ignition means may be switched off, the newly introduced ignition mixture into the chamber then being ignited by back-ignition from the preceding charge through the channel 40. For cold starting heat could be applied from a suitable source at the location 34.
Patent GB-1073774-A (GB)
Title: Improvements in or relating to spindle mountings for textile spinning or like machines
Inventor: SCRAGG FREDERICK
IPC: D01H7/04
Filed: 1963-06-14
Abstract: A spindle mounting for a textile spinning machine comprises a damping member of meshed material, e.g. metallic or synthetic plastics wire, expanded synthetic plastics sheet, or expanded metal.  In Fig. 1 (not shown) the damping member (11) surrounds a bearing (13) which receives the spindle foot (14) and abuts a stepped sleeve (15) contained within a bolster (16) which may contain a viscous liquid. In a second construction the damping member is disposed between the bolster and a flanged sleeve which receives a radial bearing for the spindle.  In Fig. 3 (not shown) the spindle (33) is received in a bolster (32) which is mounted in a meshed wire damping member (31) and is held down against a rubber ring (35) by a compression spring (37).
Patent GB-411089-A (GB)
Title: Controlling the liquid levels within closed tanks and the like and protecting the mechanism therefor against frost
IPC: F16K31/18
Filed: 1932-08-25
Abstract: 411,089. Fluid-actuated valves. ROSE, S. A. M., 111, Gray's Inn Road, London. Aug. 25, 1932, No. 23765. [Class 135.] Liquid level is regulated by a flexibly supported vessel communicating with the liquid, the vertical movements of which actuate a feed valve. The actuating mechanism includes a horizontal tube containing balls, rollers or mercury, which by their movement from one end to the other, ensure a positive movement of the valve. A lever 3, pivoted at 1 to a bracket 2 is connected by links 4, 41 to an external controlling chamber 5 and counterweight 6. The chamber 5 is connected to an internal floating chamber 7, moving over a guide 26, by flexible tubes 8, 8<1>, 9, 91 the outer and inner tubes being connected at 12, 12<1>. Flexibility of the connecting tubes is ensured by helices 13, 13<1>, 13<2>, 13<3 >and the vessels 5, 7 contain dilute alcohol to avoid freezing. The feed to the main tank is controlled by a valve 14 connected by a link 15 to the lever 3. The tank is closed by a sealed cover 19, and is provided with relief pipe 20 having an enlarged and meshcovered end 23, and with a dribble-indicating pipe 21. Movement of the vessel 5 and counterweight 6, is limited by stops 24, 25. When protection against freezing is unnecessary, the internal floating chamber 7 and the alcohol contents are omitted. The device is applicable to storage tanks, boilers, condensers, steam traps and the like, working under atmospheric or other pressure or vacuum. In the case of a steam trap, the valve 14 is attached to an outlet pipe, and is actuated from a point 29 on the lever 3 so that it opens at a maximum level. The lever 3 carries a tube 10 containing balls 11 which move from end to end as the tube passes through the horizontal position. Specification 18598/06, [Class 135], is referred to.
Patent GB-424892-A (GB)
Title: Improvements in or relating to voice modifying instruments and to apparatus in whichsuch instruments are employed
IPC: G09F25/00
Filed: 1933-08-29
Abstract: 424,892. Theatrical and musical amusement apparatus. SHEPHERD, W. V., The Weir Hotel, Rayleigh, Essex. Aug. 29, 1933, No. 23909. [Classes 132 (i) and 132 (iii)] [See also Group XXXIX] Dance band equipment includes gramophone and lighting devices and a voice modifying instrument comprising an imitation wind instrument, mouthpiece, microphone, amplifier and loud - speaker. The voice modifying instrument shown in Fig. 1 comprises a reed or other mouth piece a, a tube b, and microphone c, an amplifier e, and a loud-speaker f in the bell of a tubular brass instrument d simulating for example a double-bass. The microphone c may be mounted on or incorporated with the instrument d or together with the amplifier e may be disposed in any convenient relation to the instrument. The loud-speaker f need not be disposed in the bell of the instrument d but can be located in any position in which the sound waves will appear to be proceeding from the instrument and will not effect the microphone. The instrument will preferably be suspended or supported in such position that the mouthpiece a is level with the performer's mouth, as shown in Fig. 2, so that the instrument need not be held. Fig. 2 shows devices for use in a dance hall including an instrument d as described above, platform g, lights h, in a pivotally mounted casing h<1> and a gramophone or radio-gramophone with turntable, pick-up and amplifier connected to cone type loud-speaker j mounted behind baffle-board j<1>. A second loud-speaker k<1> with baffle board k can be placed in series or parallel conjunction with the loud-speakers j and k<1> or with the loud-speaker f in the instrument d. The amplifier or amplifiers of the gramophone can be connected to the loud-speaker f in the instrument d as well as to the loud-speakers j and k<1> and those replacing the lamps x<2> and y<2>. The whole of the devices are controlled by a single performer from a switchboard to give the effect of a full dance orchestra.
Patent GB-503597-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03B33/08
Filed: 1937-09-01
Abstract: 503,597. Cameras for colour photography and kinematography. TUCK, D., and STICKLAND, A. T. Sept. 1, 1937, No. 23909. [Classes 97 (i) and 98 (ii)] A camera for taking colour - separated photographs on an intermittently fed sensitive film which is exposed through filters successively arranged in an exposure member, which may be an endless film, fed synchronously with the sensitive film, has means which move to an inoperative position during the period of movement and to an operative position during the period of rest to maintain the sensitive film and exposure member in correct registration. The sensitive film 1 and the endless successively coloured film 5 are fed simultaneously step by step through the gate 4 by means of the crank oscillated feed lever 6, having forked arms 7 carrying pins 10 guided in curved slots 11 in fixed plates 12 and carrying teeth 8 entering and leaving holes at both sides of the two films. In addition to the intermittent feed the films 1 and 5 are continuously fed by means of a feed sprocket 31 co-operating with rollers. During each stationary period of the films they are locked against movement by means of teeth 15 on side members 14 of a frame pivotally mounted on a rod 13 and periodically rocked by a rotating cam 16 engaging one arm 17 of a bellcrank lever rotatable upon a rod 18, the other arm 19 of the bell-crank lever having a slot 20 engaging a cross rod 21 extending between the side members 14 of the pivoted frame. Further during the stationary period of the films they are at the region of exposure pressed together between a fixed glass pane 22 and a glass pane 23 horizontally slidable on two studs 24 mounted on the gate 4, the pane 23 being biassed rearwardly by two flat springs 25 in compression between the upper and lower ends of said pane and the gate 4 and being periodically pressed forward in opposition to said springs by a cam 26 engaging a plunger 27 engaging a pivoted plate 28 carrying two leaf springs 30 engaging the upper and lower ends of the pane 23. The camera is provided with the usual rotating shutter 39 mounted on the same shaft as a skew gear 40 in mesh with a skew gear 41 at right-angles to it and mounted on the same shaft as the cam 16. The reel 3 on to which the film 1 is wound is loosely driven from a grooved wheel 43 by a slipping belt 42. The whole mechanism is driven from a main shaft 32. Specification 473,191 is referred to in the Provisional Specification.