baber/WOPTO huggingface dataset:
Patent GB-1046374-A (GB)
Title: Process for foaming thermoplastic polymers and foamed polymers obtained therewith
Inventor: BREUKINK CAREL JAN
IPC: C08J9/14
Filed: 1965-03-29
Abstract: Foamed polymers are prepared by extruding at elevated temperatures a thermoplastic synthetic organic polymer and a thermally decomposable blowing agent, injecting directly into the extruder a volatile organic foaming agent to form a mixture with the polymer and blowing agent and intensively homogenizing the mixture during its passage in the direction of the die; the pressure of the mixture during said passage remaining constant or decreasing and the blowing agent being such that it decomposes in the extruder at a temperature not more than 60 DEG  C. lower than the maximum mass temperature within the extruder.  The polymers may be addition polymers, e.g. propylene, ethylene, vinyl chloride, or styrene polymers, suitable thermally decomposable blowing agents for the first three being azodicarbonamide, 4,41-oxy-bis-(benzene sulphone hydrazide), and diphenylsulphone - 3,31 - disulphohydrazide respectively. Suitable volatile foaming agents are the hydrocarbons having boiling points between 10 DEG  and 100 DEG  C.  The blowing agent and the volatile foaming agent are preferably used in amounts ranging from 0.25 to 1% and from 5 to 10% by weight respectively.  The extrusion may be carried out in an extruder having the ratio of its length to its internal diameter between 20 and 35, which is provided with a mixing zone wherein the foamable mass may be intensively homogenized by passing it through a number of grooved mixing elements, which are separated from each other by short, narrow, annular flow zones, thereby subjecting the mass to fluctuating tangential forces.
Patent GB-961362-A (GB)
Title: Improvements in cigarettes
Inventor: DAVIS ALFRED CHARLES
IPC: A24C5/18
Filed: 1962-04-06
Abstract: 961,362. Cigarette making machines; cigarettes. IMPERIAL TOBACCO CO. (OF GREAT BRITAIN & IRELAND) Ltd. March 5, 1963 [April 6, 1962], No. 13250/62. Heading A2C. A method of combining with the shredded tobacco of a cigarette a predetermined proportion of tobacco web material comprises feeding a ribbon of tobacco web with the shredded tobacco stream in a continuous rod cigarette machine, the shredded tobacco and tobacco web being wrapped in a paper wrapper. The tobacco web may form an inner sleeve 15 around the shredded tobacco 10, such a cigarette being made by feeding the tobacco web together with the paper wrapper to the garniture of a continuous rod cigarette machine. Perforations 20 may be provided in the wrapper 9 or in both wrapper 9 and sleeve 15. Alternatively the tobacco web may be cut and fed at intervals on the paper wrapper web to the continuous rod machine to provide dense end cigarettes with sleeves at one end only or to provide stiff cigarettes with sleeves at the central portion only. In a further embodiment the tobacco web may be fed through the hopper containing the shredded tobacco so that the tobacco web is embedded in the shredded tobacco.
Patent GB-403863-A (GB)
Title: Improvements in or relating to hinged lid boxes
IPC: A45C11/24
Filed: 1933-05-06
Abstract: 403,863. Display boxes. ZENOBIA, Ltd., and LAX, W. W., Woodgate, Loughborough. May 6, 1933, No. 13284. [Class 18.] A box comprises a body 10 having continuous surrounding peripheral walls, a lid 11 having depending peripheral walls, and a connecting hinge 13 which permits only of pivotal movement between the lid and body, the hinge being positioned forward of the back of the body and preferably substantially coincident with the bottom thereof, so that by pivotal opening movement of the lid there is presented below the body a part of the lid adapted to serve as a support to elevate the rear of the box. As shown the lid is of such a size as to embrace the body when closed. The edge A of the wall 11b may be cut away in a shallow curve to facilitate opening ; as shown it is straight and coacts frictionally with the base of the inwardly-inclined body wall 10b. The box is shown provided with a tray 16.
Patent GB-781713-A (GB)
Title: Improvements in or relating to television transmitters
Inventor: DAVIES ERIC
IPC: H04N5/202
Filed: 1955-05-09
Abstract: 781,713. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 17, 1956 [May 9, 1955], No. 13298/55. Class 40 (3). Relates to a television transmitter comprising a camera cathode-ray tube having a picture signal amplitude-scene brightness characteristic, such as that shown at B, C or G, approximating to a linear characteristic over at least a substantial part of its range. In accordance with the invention, an approximation to a desired square root law characteristic D (suitable for complementing the square law characteristic A of a typical image-reproducing cathode-ray tube) is obtained by superimposing upon the camera output signal a direct-current signal of amplitude so chosen that the resultant signal or a condition of minimum scene brightness is substantially equal to that which would be obtained if said characteristic were a desired square root law characteristic. Curve E shows the result of this operation in the case of a camera having a characteristic as shown at B, and curve F the result in the case of camera with a characteristic as shown at C. In the case of a camera, such as an image orthicon, with a characteristic as shown at G, attenuation is first employed to reduce the characteristic to C. Curves E and F provide a reasonably close approximation to curve D, but shaping amplifiers may be used to produce a closer approximation. In one way of carrying out the invention, Fig. 2 (not shown), the desired D.C. signal is added to the camera signal by connecting the output load resistor of the camera tube to an adjustable potentiometer connected across a noise-free D.C. source. In a second way, Fig. 3 (not shown), the potentiometer is connected in parallel with the load resistor. These two arrangements result in a signal which is only suitable from transmission through a channel capable of transmitting the D.C. level of the signal. In a third way of carrying out the invention, the D.C. signal is added in the form of a pulse derived from the normal line and field blanking pulses. With this arrangement, the signal may be transmitted through a channel which is incapable of transmitting the D.C. level, a suitable D.C. restoration circuit being provided at the receiver.
Patent GB-302113-A (GB)
Title: Improvements in and relating to knife blades
IPC: B26B11/00
Filed: 1928-05-07
Abstract: 302,113. Altenbach, O. May 7, 1928. Pocket and like knives. - A knife blade has a substantially thickened portion 2 lying behind the edge 5 and extending completely around the blade point 3, the latter being formed as a screw-driver, priser. chisel, or other tool. As shown for a pocket knife, the thickened part 2 of the blade extends approximately halt-way across the blade and has notches 7 and holes 8 which serve for prising, breaking glass, or for turning small nuts. The handle 6 has a cut-away part 9 to expose the notches 7 when the blade is in the closed position. The blade may be rigidly secured to a handle to form a sheath knife.
Patent GB-1200002-A (GB)
Title: Improvements in or relating to heat-exchange devices
IPC: F28D11/02
Filed: 1968-03-20
Abstract: 1,200,002. Heat exchanger. COMPAGNIE DES ATELIERS ET FORGES DE LA LOIRE. 20 March, 1968 [7 April, 1967], No. 13466/68. Heading F4U. A heat exchanger for effecting heat exchange between a surface of revolution rotatable about its axis of revolution and a fluid comprises a cylinder C 1 , the outer surface of which is heated or cooled by contact with a ring of hot or cold fluid fed by a pipe 32 to an annular space formed between the surface and a coaxial stationary housing A. The space is defined at each end by a serpentine seal formed by dam plates 22 and deflector plates 27, 28 secured to the cylinder to move therewith and stationary deflectors 23, 24 secured on stationary shells A 1 , A<SP>1</SP> 1 , about the cylinder, which shells form part of the housing. The fluid may be in a closed circuit and after contacting the surface by centrifugal action, viscosity of the fluid, its speed of flow and by gravity, flows from annular chambers 30, 31 delimited by sleeves 21, 25 forming parts of the shells A 1 , A<SP>1</SP> 1  and deflectors 23, 24 through apertures 34 to an outlet chamber 35.
Patent GB-408105-A (GB)
Title: Improved method of and means for making upholstery
IPC: B68G7/00
Filed: 1933-05-10
Abstract: 408,105. Endless belt and chain conveyers. ABBEY, A., 111, Hatton Garden, London.-(National Automotive Fibres, Inc.; Railroad Street, Oakland, California, U.S.A.) May 10, 1933, No. 13619. [Class 78 (i).] In a machine producing pleated stuffed upholstery in a continuous length, by stitching through nested ridges in covering and backing sheets between which strips of batting have been fed, the covering sheet, which may be continuous or in separate pieces, is held pneumatically at the parts between the seams while it is advanced through the machine. The preferred arrangement employs main and auxiliary perforated conveyer bands B, B<1>, Fig. 3, which pass over the perforated tops of exhausted chambers 3 and separate covers are fed at intervals from a stack by a reciprocating head N with gripping fingers 94e on a synchronously operated rocking shaft 94c. The depth of the pleats can be adjusted by altering the vertica,l height of the conveyer belts. After the stitching operation the emergent web 151 may be folded upon a delivery truck 152, Fig. 20, by a " camel-back " conveyer consisting of a V-shaped jointed frame 135 carrying chain driven feed rolls and having its outer end supported on a truck 143 which reciprocates on a table A<3>.
Patent GB-348864-A (GB)
Title: Flexible transfers
IPC: B44C1/175
Filed: 1930-05-03
Abstract: 348,864. Ink. PEACE, H. E., 22, Ludgate Hill, Birmingham. May 3, 1930, No. 13630. [Class 146 (iii).] The ink employed in printing transfers has added to it an adhesive comprising guttapercha or rubber solution in order to render the transfer suitable for application to articles subject to bending or stretching in use. The adhesive may be prepared by dissolving guttapercha in naphtha, carbon bisulphide, turpentine, or petrol, and removing the undissolved impurities.
Patent GB-611692-A (GB)
Title: Improvements in shaving machines
IPC: B26B19/26
Filed: 1946-05-06
Abstract: 611,692. Dry shavers. FLORMAN, I. May 6, 1946, No. 13709. Convention date, May 7, 1945. [Class 131] In a dry shaving apparatus the shaving head comprises a number of blades each mounted edgwise for rotation about an axis perpendicular to the surface to be shaved and having an arcuate edge at least where it is in contact with the undersurface of one of a corresponding number of perforated dome-like protuberances on a stationary guard. As shown the drive shaft 15 is rotated by a motor within the casing 11 and passes through a central opening in the plate 22 to be secured to a pinion 28 meshing with pinions 27 each of which is secured to a blade-carrying shaft 24. The shafts 24 are each forked at their upper ends and support a disc-like cutting blade 35 which is freely rotatable about the axle 36 so that the effective cutting arc in contact with the under-surface of the hemispherical protuberances' 45 is constantly renewed. The protuberances 45 are arranged in a circle on the outer surface of the guard 40 and may have elongated or circular perforations.
Patent GB-107134-A (GB)
Title: Improvements in Steam Heated Radiators.
IPC: F24H9/12
Filed: 1916-09-28
Abstract: 107,134. Still & Sons, W. M., and Still, W. C. Sept. 28, 1916. Radiators; thermostats.- In a radiator of the type in which the steam inlet is controlled by a thermostatic valve, the expanding tube or rod c carrying the valve f is surrounded by a tube b communicating at the end remote from the steam inlet h with the space inside the main tables or walls a, to cause the steam to pass through and heat the whole length of the outer walls of the radiator before the thermostatic valve can operate. The tube b is preferably slidably supported at one end in a guide e' carried by the end cap e, and at the other end communicates with an open passage m, which serves as an additional outlet in case the ordinary outlet o should become blocked Water of condensation is prevented from passing from the inner tube b to the passage m by a lip or weir n formed on the cap d adjacent to the end of the inner tube. A screen p perforated to allow the passage of water is arranged across the outlet o so as to deflect the steam towards the inner tube b.
Patent GB-263398-A (GB)
Title: Improvements in massaging apparatus
IPC: A61H15/00
Filed: 1926-06-02
Abstract: 263,398. Jacobi, A. Jan. 29, 1926, Massage. - In a massaging device of the type comprising two handles connected by a rod on which a number of ribbed balls is loosely threaded, the circular ribs are formed co-axially about a diameter of the ball which is disposed at an acute angle to the axis of the supporting rod. In the form shown, two handles c are connected by a rod b on which a number of balls a is mounted, the balls being formed with circular coaxial ribs d arranged at an angle to the axis of the rod. In use, when the device is moved in the direction of the arrows g the ribs tend to work the skin to and fro in the direction of the arrows h.
Patent GB-1323176-A (GB)
Title: Aircraft control systems
IPC: G05D1/00
Filed: 1971-05-10
Abstract: 1323176 Aircraft control system BENDIX CORP 10 May 1971 [15 May 1970] 13997/71 Heading B7G An aircraft control system comprises a pitch controller 2 feeding a signal indicative of desired aircraft pitch to means for controlling the aircraft, and further means providing a signal to cause the aircraft to fly at a fixed altitude when the desired pitch is zero. The desired pitch is set by the pilot by means of a thumb wheel 4 and the resultant signal fed to flight computer 20 which controls elevator 14 through servo-system 22; when the set pitch is zero a groove 8 in the wheel 4 receives a plunger (32), Figs. 2 and 3 (not shown), thereby allowing switch 12 to close, supplying power to altitude controller 18, which causes the flight computer to maintain the aircraft at constant altitude.
Patent GB-112286-A (GB)
Title: Improvements in Apparatus for Removing the Pericarp from Palm Fruit and for analogous purposes.
Inventor: BERRY HARRY
IPC: A23N5/08
Filed: 1916-10-04
Abstract: 112,286. Berry, H. Oct. 4, 1916. Hulling, husking, and decorticating.-Apparatus for depericarping palm fruit and for like purposes comprises a belt conveyer b travelling horizontally between abrading-drums c, with a superposed more slowly running endless chain or the like i carrying angularly disposed plates j which deflect the articles under treatment repeatedly into and out of contact with the abrading- members under the impulse of the greater speed of the belt, The abrading-drums c comprise a series of circular saws d separated by washers f secured on shafts e. Between the drums c, the conveyer, consisting of a pair of belts b, runs on a bed or table g with raised edges h. The endless chain i carrying the deflecting-plates j at an angle of about 45 degrees is supported by blocks i<1> which slide along the bed g between the belts b, as shown in Fig. 3. The stripped pericarp is discharged through shoots m beneath the table, by means of grid bars k interposed between the saws d of the abrading-drums. The bars k may be tapered and arranged to bear against the washers f between the saws, being suspended on rods l and raised or lowered to expose more or less of the abrading-teeth. As shown in Fig. 3, the rods l are carried in overhanging brackets o. Tn a modification, the rods l are adapted to be rocked on quadrant supports, which are slidably adjustable on cross-bars, the cross-bars being slidably adjustable on the overhanging brackets o<1>. The abrading-drum shafts e may be vertically adjustable, as by means of screw-threaded stems u, whilst the brackets o<1> may be adjusted laterally on the standards by means of screw bolts s. The countershafts v drive the abrading- drums by belts x on fast and loose pulleys y. The conveyer b running over a pulley 6, and the chain i on a pulley 8, are driven by belts or chains 10 from the main shaft 12, which drives by bevel-gearing 11 the countershafts v.
Patent GB-202707-A (GB)
Title: Improvements relating to illuminated indicating devices
IPC: G09F7/00
Filed: 1922-05-19
Abstract: 202,707. Murray, E. T. R., and Murray, L. E. R. May 19, 1922. Dials, hands, etc.; illuminating, means for. - The relatively movable terminal elements of an indicating device adapted to serve as a clock dial are constituted by sheets or discs of plate glass or other transparent material upon the surface of which the graduations and other co-operating indications are cut or etched and are arranged to be illuminated from a common source of light by internal reflection by utilising the principle of illumination described in Specification 11112/09. The edges of one or more of the relatively movable sheets &c. may be provided with colour strips as described in Specification 191,220, [Class 3 (ii), Advertising and displaying other than moving &c.] to vary the colour of the light transmitted. Relatively rotatable discs 19, 20, Figs. 4, 5, contained in a casing 21 are mounted on rollers 22 one of which for each disc is provided with teeth adapted to mesh with teeth on the bezel 23 surrounding the discs 19, 20, and to be operated by the actuating mechanism of the clockwork. The pointers 29, 30 on the dials 19, 20 and the indications 28 on a stationary disc 31 are adapted to be illuminated by a lamp 26 projecting into the central aperture 25 of the discs, an opaque cover 27 being provided to intercept the rays of light.
Patent GB-904044-A (GB)
Title: Improvements in or relating to thermostatic electric switch assemblies
IPC: H01H37/48
Filed: 1960-04-22
Abstract: 904,044. Thermal switches. THOMPSON & CO. (SUNBURY) Ltd., R. E., and MACANDREW, J. F. April 14, 1961 [April 22, 1960], No. 14256/60. Class 38 (5). A switch assembly comprises an insulating base having a thermostatic switch on one side and a safety switch on the other side, the former having a thermal element exposed to air temperature, and the safety switch having a thermal trip device in contact with a probe transmitting heat thereto so as to operate the safety switch if the transmitted heat becomes excessive. The assembly is shown controlling an electrically heated fluid-filled radiator, and the thermostatic switch comprises a snap-action spring 5, which may be similar to that of Specification 751,483, acted upon by pair of bimetals 7, 8 floatingly mounted by a spring 10 and adjustable by a knob 12. The spring controls contacts 4, 39 in series with normallyclosed contacts 23, 24. The latter may be separated by an insulating piece 26 on a rod 25 which is normally held in the Fig. 2 position by a ratchet-wheel 19 held by solder which melts when the fluid temperature, as detected by a probe 22, reaches an excessive value. This switch may be re-set by a button 31. An indicator lamp 33 is connected across the supply terminals.
Patent GB-605873-A (GB)
Title: A method of forming strongly adherent low reflection coatings by glow discharge
IPC: H01B1/00
Filed: 1945-06-07
Abstract: A method of adhering a low reflection coating to a siliceous material, e.g. glass, comprises applying to the material by thermal deposition in an evacuated chamber, a layer of a metal or metallic compound, oxidizing said layer by glow discharge in an oxygen containing atmosphere with the pressure in the chamber still below normal, and thermally depositing thereupon a low reflection coating after rebuilding the vacuum.  The low reflection coating may consist of two or more layers, each layer being of a different material. Apparatus for carrying <PICT:0605873/III/1> out the method comprises as shown a bell jar 16 removably mounted on a base 15 having a conduit 18, a support 27 for the siliceous material 28, and supports 31, 35, 39 on which filaments 29, 33 and 37 respectively are vertically adjustable.  The bell jar has an electrode 23 connected to an electric supply and is earthed at 26. The pipe 18 leads to a vacuum pump and through valve-controlled branch pipes 18a, 18b to supplies of air and oxygen respectively. In use, the chamber is evacuated and filaments 29 are heated so that the metal or metallic compound deposited thereon is evaporated to coat the material 28 such that the thickness of the coating gives no optical effect.  Air or oxygen is introduced to permit a glow discharge from electrode 23, whereby the metallic layer is oxidized.  The vacuum is rebuilt and the low reflection coating deposited from one of the heated filaments 33 on to the oxidized layer.  Filaments 37 are used when a second low reflection coating is desired.  Metals which may be used to form the first adhesive layer include aluminium, zinc, tin, silver, lead or compounds thereof, such as lead sulphide, lead selenide and zinc phosphide.  Suitable low reflection coatings include magnesium fluoride, calcium fluoride, sodium fluoride, cryolite, lithium fluoride and sodium silico fluoride.  Specifications 605,871, 605,872 and 605,874, [all in Group II], are referred to.
Patent GB-277089-A (GB)
Title: Improved processes for rendering cellulose acetate silk and similar products resistant to deterioration during treatment with hot or boiling aqueous liquors
IPC: D06M13/53
Filed: 1926-06-08
Abstract: 277,089. Silver Springs Bleaching & Dyeing Co., Ltd., and Hall, A. J. June 8, 1926. Yarns, stretching; hanks, treating.-The resistance of cellulose acetate silk in the form of yarns, skeins, &c. to hot or boiling aqueous liquors in increased by stretching the fully set and finished silk filaments beyond their elastic limit; the stretching may be assisted by pretreatment of the silk with swelling-agents, such as acetone, alcohol, formaldehyde, or glycerine; a stretch of 15-25 per cent. is suitable. Threads so treated retain their lustre and do not become curly or wool like in boiling water. Specifications 206,113, [Class 120 (i), Spinning, Preparation &c. for], and 246,879 are referred to.
Patent GB-403874-A (GB)
Title: Improvements in and relating to voltage control of electron discharge devices
IPC: G05F1/52
Filed: 1933-05-18
Abstract: 403,874. Valve circuits. BRITISH THOMSON HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Cockrell, W. D. ; 1, Rugby Road, Schenectady, New York, U.S.A.) May 18, 1933, No. 14436. Convention date, May 20, 1932. [Class 40 (v).] The anode current of a screen grid valve is made independent of variations in the supply source by shunting the screen gridcathode circuit with a glow discharge tube, so maintaining the screen grid voltage constant. As applied to a pyrometer, a photo-electric cell 1 is connected between the screen and control grids 6, 10 of a thermionic valve whose output includes an indicator 2. A potentiometer 12, 13 across a D.C. supply 3, 4 supplies operating potentials to the valve, a glow discharge device 19 being connected across the points 16, 4 to stabilise the potential of the screen grid. A tapping 14 supplies a bias to the valve. According to the Specification as open to inspection under Sect. 91, a glow tube may be connected across the anode-cathode circuit of a triode. This subject-matter does not appear in the Specification as accepted.