baber/WOPTO huggingface dataset:
Patent GB-285092-A (GB)
Title: Improvements in sound radiators
IPC: H04R1/40
Filed: 1928-02-10
Abstract: 285,092. Victor Talking Machine Co., (Assignees of Williams, S. T.). Feb. 12, 1927, [Convention date]. Loud-speakers. - Starting from a, given horn design. Fig. 1, for example one based on the exponential law and having a mouth area A2 which will give a suitable cut-off frequency, two similar horns, Fig. 2, are derived such that the sum of their areas at any point is equal to that of the basic horn at the corresponding point, the narrow ends of the horns then being removed up to a point at which the area of each separately is equal to that of the inlet Ao of the basic horn. To each inlet a sound box or telephone receiver is attached so that the energy output is doubled without overloading or distortion, whilst at the same time the transmission characteristics of the basic horn are retained and the overall length of the apparatus has been reduced. In a similar manner any number of smaller and shorter horns may be derived from the basic horn, Fig. 3 showing an arrangement of nine horns with their inlets separated and their outlets contiguous. Fig. 5 shows an assembly of eight horns 6 arranged in a circle, with baffles 8 closing the spaces between the outlets. A small departure from the calculated number of horns is permissible. For example, only seven of the sections shown in Fig. 3 may be employed. If however, the number be reduced to five, a supplemental mouth section of inlet area equal to the sum of the outlet areas of the sections used and of outlet area equal to that of the basic horn must be added to the structure. Specification 307,084 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement in which a large number of horns are grouped so that their outlets lie on a sphere. This subjectmatter does not appear in the Specification as accepted.
Patent GB-215830-A (GB)
Title: Improvements in the manufacture of linoleum
IPC: D06N7/00
Filed: 1923-02-14
Abstract: 215,830. Linoleum Manufacturing Co., Ltd., and Godfrey, A. A. Feb. 14, 1923. lnlaid linoleum.-A number of grained sheets A of linoleum are packed into a block alternately with thin sheets B of a different colour. The sheets B have, preferably, holes C cut in them. The block is then compressed in the direction of the arrow D. It is then cut into slabs along the lines E, the slabs being then rolled out in the direction of the arrow F. The sheets B may alternatively be formed of layers of paint.
Patent GB-805540-A (GB)
Title: An improved liquid pump
Inventor: SHARPE ARCHIBALD WALTER
IPC: F01L25/06
Filed: 1953-02-17
Abstract: 805,540. Reciprocating pumps. SPERRY GYROSCOPE CO. Ltd. Nov. 13, 1953 [Feb. 17, 1953], No. 4378/53. Class 102(1). [Also in Group XXVI] A double acting liquid pump for supplying liquid at substantially the pressure of a supply of gas comprises two coaxially arranged cylinders spaced apart by a fixed member of a sliding valve device, a free piston in each cylinder, each piston being mechanically independent of the other, a space for liquid on the inner side and a space for gas on the outer side of each piston, an inlet duet for low pressure liquid for each cylinder and an outlet duct for high pressure liquid for each cylinder, a non-return valve normally closed in each duct, and a movable member of the sliding valve device extending into the liquid space of each cylinder and operated by the pressure of the liquid, the arrangement being such that when the piston in one cylinder is at or near the end of its inward travel gas under pressure is admitted to the gas space of the other cylinder and gas is allowed to escape from the first cylinder. Referring to Fig. 1, low pressure liquid from an accumulator (not shown) is supplied through a channel 3 and non-return valves 5 to the cylinders 1 at the inner sides of the pistons 2 and the high pressure liquid is delivered from the inner sides of the piston through non-return valves 8 and outlet channel 7. High pressure gas is supplied through channel 9 to the outer end of one or other of the cylinders according to the position of the shuttle valve 10, the outer end of the other cylinder being connected to an exhaust channel 9A or 9B ; the position of the shuttle valve is changed over by each piston in turn as it reaches the end of its stroke. During the changeover only a slightly reduced high pressure liquid is available from the pump and if this interruption cannot be permitted these may be provided a small high pressure accumulator into which the cylinders supply high pressure liquid and from which high pressure liquid can be withdrawn even during the changeover period.
Patent GB-418953-A (GB)
Title: Improvements in methods for protecting surfaces
IPC: C09D101/08
Filed: 1934-02-10
Abstract: 418,953. Protecting surfaces. HOLM, E. R., 3, Kvintus Alle, Copenhagen. Feb. 10, 1934, No. 4515. [Class 93.] Surfaces are protected against the action of liquids, gases, &c. by applying one or more coatings of cellulose lacquer, or other lacquers, varnish, or the like, and then applying to the last coating, while it is still adhesive, a layer of material adapted to form, or being in the form of flakes or scales, such as graphite in flake form. Alternatively a volatile solvent may be applied after the coating has dried to render it adhesive before the scale material is applied, or the scale material may be applied to a dry coating in mixture with a volatile solvent. The scale layer may be compacted by a roller, brush, or suitable tool before it has hardened. If the surface is liable to become distorted under temperature variations &c., a yielding material is used to form an intermediate layer beneath the scale material.
Patent GB-1486767-A (GB)
Title: Device for the control of the tools of a fish processing machine
IPC: A22C25/08
Filed: 1976-02-05
Abstract: 1486767 Controlling fish-dressing tools NORDISCHER MASCHINENBAU RUD BAADER 5 Feb 1976 04530/76 Heading A2U A device for controlling a fish processing tool comprises a first sensing element 1, supported to be pivotably displaceable by a fish longitudinally fed along a feed path 4, the degree of displacement depending on the thicknes of the fish, a second sensing element 2 disposed downstream of the first sensing element and diplaceable by the fish to cause control means 25 to generate a signal for controlling the tool, the second sensing element and the control means each being automatically displaceable downstream in presettable proportionality ratio to the extent of the pivotable displacement of the first sensing element to vary the position of the second sensing element relative to the first in accordance with the size of the fish. In the embodiment shown first sensing means 1 is pivotably mounted at 12 and biased downward by spring 14. Displacement by the fish causes carriage 23 carrying control means 25 and second sensing element 2 to slide in a downstream direction on rod 15. The ratio between the displacements of first sensing means 1 and carriage 23 is adjustable by moving lever 3. In use lever 3 is set according to the length/thickness ratio of the fish being treated so that the tool operates correctly for any type of fish.
Patent GB-895551-A (GB)
Title: Process for the manufacture of reinforced pipes and pipes produced by the process
IPC: F16B15/00
Filed: 1961-02-07
Abstract: 895,551. Flexible pipes; pipe joints. MULLER, J. Feb. 7, 1961 [March 17, 1960], No. 4540/61. Classes 99(1) and 99(2). A process for making a reinforced pipe comprises the steps of winding at least one band of woven or braided material in a spiral with the edges of the band contiguous, fastening the edges of the band to each other, and embedding the reinforcement constituted by the band in the pipe. The cylindrical reinforcement 3 may be produced by winding the band 2 on a mandrel and subsequently embedding the reinforcement in moulded or extruded material; alternatively, the band is wound on to a base pipe 1 and coated or covered by a vulcanised or other covering 4 of the same or a different material as that of the base pipe. As shown, metal wire 5 is bent into a zig-zag form and having the points thereof bent up at right angles to the plane of the zig-zag to form rows of teeth 6, 7 and the toothed strip is wound ahead of the band so that one row of teeth penetrates the edges of one convolution of the band and the other row of teeth penetrates the contiguous edge of the next convolution of the band, the teeth then being bent over by a roller; there may be two parallel and staggered rows of teeth to each edge of the band, and where the band is of braided metal wire, the teeth are formed on one edge of the band. Coupling flanges provided at the ends of the pipe, may comprise concentric, metal rings 10, 11, 12, Fig. 11, spaced to permit the passage of bolts through holes 13 and connected together and to the reinforcement 14, 14<SP>1</SP> by interwoven wires 15, 15<SP>1</SP>, one of the latter being brought into contact with a metal counterflange 17 whereby static electricity may be discharged; alternatively, the flange has a tapered surface and a single reinforcing ring 19.
Patent GB-814747-A (GB)
Title: Improvements in or relating to a pellet mill
IPC: B30B11/20
Filed: 1956-02-14
Abstract: 814,747. Pellet mills. SPROUT, WALDRON & CO. Inc. Feb. 14, 1956 [Feb. 15, 1955], No. 4557/56. Class 87(2). A pellet mill has means for the separate introduction of fluid, for mixture with pulverous material to be extruded and cut into pellets, and for directing the fluid on to the die just prior to the contact of the material by the means for forcing it through the die. Two rollers 15 are carried in a fork 14 on the end of a shaft 12 which is normally stationary in the position in whcih the rollers are horizontally side by side, their alignment being maintained by a tie bar 16. The shaft is prevented from rotating by a shear pin 35 passing through aligned holes in a fixed lug and a collar 36 secured to the shaft. A pipe 61 passes through a longitudinal bore in the shaft, bends downwards through a transverse bore 63 and ends in a spray head 65 which preferably occupies the " 5 o'clock " angular position shown in Fig. 2. An annular die 20 with perforations 21 is freely rotatable, with its housing 22 and cover 50, on the shaft 12, through bearings 23, and is belt-driven from a motor 25 through a large pulley 27. The tension of the drive belt 26 is adjustable through a screw threaded rod 33, operation of which swings the motor mounting 30 about a hinge 31. The material to be pelleted, e.g. dried sewage waste, fertilizer mixtures, animal feeds, fibres &c., is fed from a hopper 55 through an opening 52 in the cover 50. The rotary die assembly is shrouded by a housing 56 with a bottom discharge outlet 58. Rotation of the die carries the material into the pipe between it and the rollers, Fluid is pumped through a flow meter 67 at a pressure required for the necessary intensity of spray and passes through a rotary fluid-tight joint 70 into the pipe 61 to issue as spray against the inner face of the die 20. The moistened material is forced through the perforations 21 by the pressure between the die and the rollers and issues as extruded strings which are cut off by knives 40 into pellets. If jamming occurs the shear pin 35 breaks and the shaft 12 rotates until its collar 36 operates a microswitch 44 which causes the motor 25 to be shut off. In a modification the pipe for the spray fluid is introduced through the front face of the die cover below the hopper 55 and is made of brittle material, e.g. hard rubber, so that it will break and prevent damage if the shear pin 35 breaks and the rollers 15 rotate with the die. Suitable fluids are water, oil, or molasses (for animal feeding stuff) ; acids, ammonia or other fluid intended to react chemically with the dry material (for fertilizers), or steam where heat facilitates extruding the material.
Patent GB-578677-A (GB)
Title: Improvements in or relating to fluid pressure-sensitive devices
IPC: G01L7/04
Filed: 1944-03-13
Abstract: 578,677. Pressure gauges. GRANT, C. R. A. March 13, 1944, No. 4681. Addition to 562,097. [Class 106 (ii)] In a Bourdon-type gauge for measuring pressures above and below atmospheric, the movement of the tube 1 when measuring pressures above atmospheric is regulated' by one or more adjustable stops 14, 15 engaging the outer part of the tube whilst when measuring vacua the movement is controlled by an adjustable stop 16 bearing on the inner side of the tube. The zero (atmospheric pressure) position of the pointer is set by adjusting the various stops. All the stops are adjustable radially and the stops 14, 15 are also movable in a slot 9 to vary their positions along the length of the tube 1. Specifications 562,868 and 567,240 are referred to.
Patent GB-852699-A (GB)
Title: Self-propelling road rollers with improved driving means
Inventor: WHEELER ARTHUR VINCENT
IPC: E01C19/26
Filed: 1958-02-13
Abstract: 852,699. Hydraulic drives to vehicles. MARSHALL SONS & CO. Ltd. May 12, 1959 [Feb. 13, 1958], No. 4712/58. Class 79(2). In a road roller, an internal combustion engine 6 drives a variable displacement hydraulic pump. 8 which drives a motor 9 which drives a pair of the vehicle wheels and means are provided for infinitely varying, or adjusting in small steps, the output of the pump. The pump 9 drives the wheels 2 through the gear train 12, 14, 16, 17, and 19, the latter meshing with an internally toothed annulus 20 attached to the rear wheel 2. The gear 17 is the crown wheel of a differential gear comprising half shafts 18 and 18a from which each back wheel is driven by a gear 19. The output of the pump 8 is varied by varying its tilt angle by means of a servomotor 23 under the control of a link 25 operated by a ratchet lever 28 or by a spring urged clamp co-operating with a smooth quadrant so giving, in the first case, step by step adjustment and in the second, continuously variable adjustment. A booster pump 34 is provided to maintain an increased pressure in the hydraulic system.
Patent GB-636295-A (GB)
Title: Improvements in and relating to the production of water-soluble mixed cellulose ethers
IPC: C08B11/155
Filed: 1948-02-18
Abstract: A water-soluble mixed ether of cellulose containing the cyano-ethyl group is obtained by dissolving a water-insoluble alkali-soluble cellulose ether, the degree of substitution of which does not exceed one ether group per anhydroglucose unit of the cellulose, in a dilute aqueous alkali hydroxide solution containing not more than 6 per cent by weight of caustic alkali, and reacting on the solution obtained with from 0.1 to 2.5 mols. of acrylonitrile per anhydroglucose unit originally present in the cellulose.  The water-insoluble cellulose ether may be a lowly substituted methyl or hydroxyethyl cellulose ether.  The acrylonitrile may be added in drops to the solution of cellulose ether while stirring or shaking, the temperature of the reaction being maintained at 20 DEG  C.  The water-soluble mixed ethers may be obtained from the reaction mixture by stirring the mixture into a weak aqueous solution of hydrochloric acid to obtain a clear, slightly acid, solution which can then be purified by dialysis in a regenerated cellulose casing.  If the mixed ether is required as a paste, the dialyzed solution may be concentrated by evaporation under reduced pressure.  If the solid ether is required, the dialyzed liquid may be concentrated by vacuum distillation and the ether is precipitated by adding alcohol or acetone.  The mixed ether may be obtained by directly precipitating from the neutralized reaction mixture by the addition of alcohol or acetone.  The mixed ethers are readily soluble in acidic, neutral, or alkaline aqueous solutions as well as in hot or cold water. They may be used as sizes for textile yarns, particularly for viscose rayon warp yarns.  They may be used as emulsifying agents, thickeners for printing pastes, and adhesives for wall-papers. They are resistant to attack by micro-organisms.  In an example, a mixed ether containing 0.36 cyano-ethyl groups per anhydroglucose unit is obtained by the action of acrylonitrile on a solution in 4 per cent caustic soda of a water-insoluble hydroxyethyl cellulose. In another example, a mixed ether containing 0.4 cyanoethyl groups per anhydroglucose unit is obtained by the action of acrylonitrile on a solution in 5 per cent caustic soda of a water-insoluble methyl cellulose.  Specifications 344,488, 374,964, 588,751 and 592,352, are referred to.
Patent GB-1485253-A (GB)
Title: Hot melt composition
IPC: C08L31/04
Filed: 1976-02-06
Abstract: 1485253 Hot melt compositions TOYO SODA MFG CO Ltd 6 Feb 1976 [6 Feb 1975] 04734/76 Heading C3P [Also in Division C5] Hot melt adhesive and coating compositions comprise (1) an ethylene/vinyl acetate copolymer containing 10 to 45 weight per cent of vinyl acetate and having a melt index of 1 to 1000 g./10 mins. and/or a rubber and (2) an oxidized propylene/ethylene copolymer having an acid value of 1 to 20, an ethylene content of 1 to 20 weight per cent and an average molecular weight of 500 to 10,000. The compositions may also contain a tackifier, e.g. rosins, modified rosins and petroleum resins, a wax or an asphalt, or a conventional pigment or filler. Examples describe compositions comprising oxidized propylene/ethylene copolymers; ethylene/vinyl acetate copolymers or styrene/butadiene block copolymers; and glycerol ester of hydrogenated rosin, hydrogenated dicyclopentadiene resin, hydrogenated rosin, cyclopentadiene resin, polymerized rosin or wax.
Patent GB-840175-A (GB)
Title: Delay line structure for travelling wave amplifier tubes
IPC: H01J23/24
Filed: 1959-02-11
Abstract: 840,175. Travelling-wave tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 11, 1959 [Feb. 12, 1958], No. 4742/59. Class 39(1). A delay line for a forward-wave travelling- wave amplifier tube consists of alternate cylinders 1 and rings 2 supported by one or more conductive bars within a cylindrical support 9. As shown the cylinders 1 are supported by bars 3, 5 which form part of comblike structures. To inhibit the propagation of undesirable modes, resonant slots 8 are provided in the portions of these structures opposite the rings 1, but may also be provided in the supports for the rings 2. The line has particular application to M-type tubes having an axial conductor traversed by an electric current. Specification 747,252 is referred to.
Patent GB-139183-A (GB)
Title: Improvements in attachment for garment-pockets
IPC: A41D27/20
Filed: 1920-02-17
Abstract: 139,183. Bell, O. D. Feb. 19, 1919, [Convention date]. Pockets. - To strengthen the corners of pockets, more particularly of fur garments, reinforcing means C are provided having slots 12 for engaging the two layers of the pocket and slots 13, 13a for stitching purposes. The reinforcing means may be of stamped metal.
Patent GB-1470795-A (GB)
Title: Helium cooled nuclear reactors
IPC: G21F9/02
Filed: 1974-02-01
Abstract: 1470795 Cooling nuclear reactors UNITED KINGDOM ATOMIC ENERGY AUTHORITY 9 Jan 1975 [1 Feb 1974] 04870/74 Heading G6C A helium-cooled nuclear reactor, especially an HTR employing graphite as moderater, ineludes a main, closed coolant loop and a by-pass coolant purification loop through which a fraction of coolant from the main loop is circulated to pass over an oxidizing bed for oxidizing impurities and, successively, through an absorption bed for absorbing oxidized impurities prior to the coolant being returned to the main loop, and further circuitry arranged for recycling wet gas from an oxidizing bed to the main loop. In this way the ratio of hydrogen to water in the helium is reduced without increasing the absolute water content (which would increase graphite corrosion). In one embodiment (Fig. 1, not shown) a portion of the gas leaving the oxidizing bed (4) to pass to the absorption bed (5) (where CO 2  and H 2 O are removed) is diverted so as to by-pass the absorption bed (5) and return to the main coolant loop via a further absorption bed (5a) which removes only CO 2 . In another embodiment (Fig. 2, not shown) two by-pass loops (3, 3a) are provided, the second (3a) of which includes an oxidizing bed (7) and an absorption bed (5a) for removal only of CO 2  from gas returning to the main coolant loop. In a further embodiment (Fig. 3, not shown) a single by-pass loop (9) includes a pair of oxidizing beds (10, 11) mutually in series upstream of the absorption bed (12); and a portion of the gas leaving the first, upstream oxidizing bed (10) is returned directly to the main loop. In a further embodiment (Fig. 4, not shown) two by-pass loops (3, 14) are provided, the second (14) of which includes a catalyst (oxidizing) bed (15) which oxidizes hydrogen only (carbon monoxide being unaffected) before returning the gas to the main loop. In another embodiment (Fig. 5, not shown) in which a single by-pass loop (16) includes a pair of absorption beds (18, 19) mutually in series downstream of an oxidizing bed (17), the first, upstream absorption bed (18) absorbs CO 2  only and a portion of the gas leaving that bed (18) is returned directly to the main loop.
Patent GB-1569962-A (GB)
Title: Anti-tumoral agents and their use
IPC: A61K31/74
Filed: 1978-02-07
Abstract: The composition contains at least one water-soluble homopolymer or copolymer which contains unsaturated mono- or polyhydroxy compounds or their esters or urethanes in incorporated form. The composition is prepared by dissolving the homopolymers or copolymers in a physiological saline solution. For the treatment of tumours, the composition is administered intraperitoneally, intravenously or intramuscularly.
Patent GB-866903-A (GB)
Title: Improvements relating to electric hot-plates
Inventor: BYFORD GEORGE PLEDGER
IPC: F24C15/10
Filed: 1957-02-13
Abstract: 866,903. Electric hotplates. A.E.I.-HOTPOINT Ltd. Feb. 13, 1958 [Feb. 13, 1957], No. 4943/57. Class 39(3). A hot-plate includes sheathed wire electric heater 1 pivoted on a support 2 carrying plug-in terminals 8 to engage sockets on a supporting frame, e.g. on a cooker and a reflector 3, the support comprises a metal plate 2 of generally circular shape providing at diametrically opposite regions along its periphery a housing 7 for the plug-in terminals 8 and a pair of ears 11 perpendicular to the plane of the plate and forming a pivotal support for the heater; a pressed metal casing 20 between the ears forms a protection for the terminal ends 23 of the heater and for the conductors 24 connected to the ends 23 and the plug-in terminals 8. The housing 7 is formed by bending a flange on the plate 2 up and over at 13 and down at the edges 14, 17 to the bottom of which is welded a closure plate 15 apertured for the passage of the pin plugs 8 in insulators 16 and of an earthing pin 18 in an insulating bush 19. The heater 1 is carried on a spider 28 resting on indented projections 27 within an upward flange 26 of the reflector 3. The bent-down ends 12 of the heater are brazed into a steel box 20 and are pivoted between ears: 11 bent up from a wide notch in the plate 2. The ends of the conductors 24 from the pins 8 pass through apertures in a refractory bar 21 in the box 20 to the terminal ends 23 of the heater. The metal plate 2 has on its lower side brackets 25 supporting the hotplate on a cooker and has a central opening 4 in which engages a flanged rim 5 of reflector 3, which may be of glass or enamelled steel.