baber/WOPTO huggingface dataset:
Patent GB-324803-A (GB)
Title: Improvements in separating devices for solids and liquids
IPC: B01D29/39
Filed: 1929-01-25
Abstract: 324,803. Wigan Coal & Iron Co., Ltd., and Leek, A. E. Jan. 25, 1929. Filters having sheet filtering-material; filters having loose filtering-material. - In that type of apparatus for the removal of solids from mixtures of liquids and solids, e.g. coal slurries, in which a number of filtering trays superposed within a container are pivoted about their axes so that they may be tipped to discharge the matter deposited thereon, the trays 2, 3 and 4 are mounted so that their axes 5 lie in vertical planes displaced from one another. The container 1 which is similarly inclined to the vertical, is filled by letting the slurry into it at a number of different levels. Filtering proceeds by allowing a bed to form by gravity upon the perforated surface of the trays, and then applying a pressure difference, so that the liquid is drawn through the filter beds on the trays and passes off through the draw off pipes 6 connected to the hollow trunnions 5.
Patent GB-942182-A (GB)
Title: Removing flesh by shot blasting
Inventor: LINDALL REGINALD
IPC: A22C17/04
Filed: 1959-01-23
Abstract: 942,182. Preparing meat and fish. UNILEVER Ltd. Jan, 20, 1960 [Jan. 23, 1959], No. 2637/59. Heading A2U. [Also in Divisions A4 and B3] Meat, fish or fruit flesh is stripped e.g. from bone, part or whole carcases, stones, or pips, as the case may be, by shot blasting using solid particles e.g. of ice, solid carbon dioxide, sodium chloride, which can subsequently be extracted by changing their phase. The flesh may be chilled or frozen and the particles sub-cooled to increase their abrading power and jetted at the flesh in a stream of fluid e.g. air, or liquid such as water. Pieces of meat 1 on a steel mesh conveyer 2 are traversed past nozzles 3 and blasted withsmall sub-cooled ice particles issuing therefrom. Ice particles and shredded flesh are collected in a hopper 4 and passed to a discharge shoot 5. Ice particles in a hopper 6 pass to a cooled chamber 7 fed by a pipe 9 from conduit 8 with compressed air, the main flow of air however passing to a Venturi 10 and drawing ice particles through a pipe 11, leading from the chamber 7, and carrying them to the blasting nozzles 3.
Patent GB-521528-A (GB)
Title: Process and device for de-gumming ramie and other similar fibres
IPC: D01C1/02
Filed: 1939-01-26
Abstract: 521,528. Degumming ramie and similar fibres. NEILL, D. S. Jan. 26, 1939, No. 27.13. Addition to 447,013. [Class 2 (ii)] The process of degumming ramie fibre or other similar fibres by cooking the fibre in soap solution and then subjecting it to a mechanically produced vibratory motion, described in the parent Specification, is modified by producing the vibratory motion by means of a flattened jet of water at a pressure of 7 or 8 atmospheres and at the temperature of the surrounding air instead of by mechanical means.
Patent GB-802718-A (GB)
Title: A process for degrading polyethylene terephthalate to dimethyl terephthalate
Filed: 1957-01-25
Abstract: Dimethyl terephthalate is prepared by mixing polyethylene terephthalate with up to 50 per cent of its weight of dimethyl terephthalate and heating the mixture at 10-35 atmospheres gauge pressure to a temperature of up to 210 DEG  C. in the presence of methanol and a transesterification catalyst in a proportion of 0.5-10 per cent by weight of the polyethylene terephthalate. Suitable catalysts are zinc, zinc oxide, magnesium oxide, zinc acetate, lead oxide, lead acetate, magnesium and iron.  The pressure is preferably 10 to 19 atmospheres gauge.  Examples are given illustrating the reaction using varying proportions of dimethyl terephthalate and different polyethylene terephthalate wastes, viz.: polyethylene terephthalate waste fibres, and chips. A comparative example is also given of the degradation of polyethylene terephthalate, in the absence of dimethyl terephthalate.
Patent GB-1462395-A (GB)
Title: Boot-strapped amplifier
IPC: H03F3/34
Filed: 1974-01-22
Abstract: 1462395 Transistor amplifying and switching circuits TEKTRONIX Inc 22 Jan 1974 [12 Feb 1973] 2856/74 Heading H3T An amplifier or switch, more particularly for feeding a capacitive deflection circuit, comprises first and second amplifier devices 10, 16 (Fig. 1) for carrying load current in respective directions, a bootstrap circuit (including Zener diode 24) for maintaining a constant quiescent through the amplifier devices and a current steering circuit comprising transistors 12, 14 and 18 located between the devices for steering the load current to amplifiers 10 and 16 respectively in accordance with the direction of the current. The steering circuit is in the form of a current mirror amplifier and may take the alternative form shown in Fig. 3. Negative feedback is provided through resistor 26. In Fig. 2, the feedback is via an active network comprising resistors 42,44, 46, 48 and emitter-follower 40, Fig. 2, while a transistor 24 with collector strapped to base functions in the Zener diode. Additional series transistors are provided to enable the circuit to handle larger voltage swings, including Darling- ton pair 50, 52: this minimizes loading on the feedback network. Resistor 56 provides a current path for reverse base current during large voltage excursions and avoids breakdown. Transistor 54 provides a grounded base stage reducing the Miller effect in transistor 16. In the upper part of the amplifier transistors 64, 66 and 60, 62 from Darlington pairs, resistors 76, 74 again providing for reverse base currents on large voltage excursions.
Patent GB-821198-A (GB)
Title: Improvements in air blast electric circuit breakers
IPC: H01H33/02
Filed: 1958-01-29
Abstract: 821,198. High-tension switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Jan. 29, 1958 [Feb. 1, 1957], No. 2937/58. Class 38 (5). An air-blast circuit-breaker with contacts 10, 23 in a metal container 2 filled with compressed air, has a lead-through insulator 7 in the wall of the container 2 carrying the movable contact 10 and its operating piston 11, and another leadthrough insulator 6 which carries the stationary nozzle contact 23 and a blast valve 29. To open the breaker a coil 59 is energized to overcome a holding magnet 58 so that a spring 54 moves a piston 56 and rod 55 upward to operate a valve 48 so that compressed air passes from the container 2 along a pipe 49 to act on a piston 43. This operates a valve 35 to pass compressed air from container 2 to the operating cylinder 25 to open the blast-valve 29. The latter part of the movement of the piston 43 allows compressed air to pass along a tube 46 and act on a piston 40 which operates a valve 22 to open the underside of the contact piston 11 to the atmosphere. As the contacts open exhaust air passes around the arcing contact 27 and through a cooling grid 28 and the blast valve to the atmosphere. Air also passes through a hole 45 in the piston 43 so that after sufficient time for circuit interruption the blast valve is again closed. To close the breaker a coil 63 is energized to operate a valve 60 and supply compressed air to the piston 56 so that it is restored to the position where it is retained by the magnet 58. This allows a spring 53 to reset the valve 48 so that the compressed air supply is cut-off from the piston 40 and the valve 22 is restored so that spring pressure on the piston 11 closes the contacts. The valve 29 may alternatively be arranged close to the contact 23.
Patent GB-325670-A (GB)
Title: An improved oil or like lamp
IPC: F21V37/00
Filed: 1929-01-29
Abstract: 325,670. Whillock, F. A. Jan. 29, 1929. Fuel reservoirs.-In a lamp of the type in which the fuel level is above the burner level, the fuel container 1 is fitted with a filling tube 3 and a locking tube 2 of U-shape, the upper end of which is brought through the container and covered by a splash guard 7. When filling the burner is temporarily replaced by a cap or plug 4. As the fuel is consumed its place is taken by air which enters through the burner chamber 6 and opening 5.
Patent GB-1216841-A (GB)
Title: Improvements in or relating to micro-wave phase shifters
Inventor: PROCTOR JOHN HOWARD
IPC: H01P1/195
Filed: 1967-01-20
Abstract: 1,216,841. Ferrite phase-shifters. ELECTRIC & MUSICAL INDUSTRIES Ltd. 22 Jan., 1968 [20 Jan., 1967], No. 3012/67. Heading H1W. A ferrite phase shifter having reciprocal properties comprises ferrite rings (square or circular) arranged on either side of the axis of a waveguide, the rings being magnetized by current conductors passing therethrough. As shown, two sets 11, 12 of ferrite rings arranged on either side of the axis of a rectangular waveguide 2 are magnetized by oppositely-directed currents in conductors 13, 14. The conductors pass through ferrite beads 19-22 in the narrow sides of the guide. The currents may be continuous or, if a ferrite having a square-loop hysteresis characteristic is used, single pulses may be used to drive the rings to a remanent condition. A number of phase shifters arranged in tandem in the waveguide may be controlled by pulses representing binary numbers. Temperature compensation may be obtained by using two or more ferrites having different temperature characteristics for the different rings. Alternatively, each single ring may have two semi-peripheral portions made of different ferrites. The Specification describes a known non-reciprocal phase-shifter in which a set of rings is arranged on the axis of a waveguide within a section of restricted width (Fig. 1, not shown). The rings are magnetized by a conductor surrounded by a dielectric tube.
Patent GB-1208984-A (GB)
Title: Improvements in or relating to pneumatic tyres
Inventor: JOHANNES GUNTER
IPC: B60C9/07
Filed: 1968-01-19
Abstract: 1,208,984. Pneumatic tyres. CONTINENTAL GUMMI-WERKE A.G. 19 Jan., 1968, No. 3040/68. Heading B7C. A pneumatic tyre comprises two carcase plies, each carcase ply comprising an inner portion 5 the cords of which are arranged at 90 degrees to the mid-circumferential plane and an outer portion 6 the cords of which are arranged at 90 degrees to the mid-circumferential plane in the sidewall region of the tyre and are angled off in the tread region of the tyre, the outer portion of one ply overlying the outer portion of the other ply in the tread region. The cords in the outer portions of the plies in the tread region may be arranged at opposite angles with respect to the mid-circumferential plane. The cords of the inner portions of the plies may be arranged so as to overlap in the tread region of the tyre and the cords of the outer portions may be arranged so as to extend from one sidewall region into the other (Fig. 3 not shown). In another embodiment, the cords of the outer portions overlie one another in the tread region at the same angle with respect to the mid-circumferential plane and a breaker strip is arranged above the outer portions with its cords cross-laid with respect to the cords of the outer portions (Fig. 4, not shown).
Patent GB-1302961-A (GB)
IPC: C08L71/00
Filed: 1970-01-22
Abstract: 1302961 Adhesive compositions BOSTIK Ltd. 22 Jan 1970 [24 Jan 1969] 3227/70 Addition to 1139586 Heading C3P  A hot melt adhesive composition comprises (a) 30 to 50% by wt. of an ethylene-vinyl acetate copolymer having 60-72% by wt. ethylene and 28-40% vinyl acetate, (b) at least 2% of a phenoxy resin, (c) 20-40% of polystyrene, polybetapinene, polyalphapinene, hydrogenated rosin, ester gum or a coumaroneindene resin, the material having a softening- point of 50-85‹ C. and (d) 15-40% of a chlorinated polyphenyl, the composition having a softening point from 90‹ to 100‹ C. (Ball and Ring) and being characterized by either the chlorinated polyphenyl containing from 40 to 65% by wt. chlorine, the copolymer having a softening point (B. and R.) less than 125‹ C. but not less than 85‹ C. and the composition having a viscosity at 190‹ C. of 10,000 to 25,000 cp. at 50 sec.<SP>-1</SP> on an extrusion rheometer or by the chlorinated polyphenyl containing 42% chlorine, the copolymer having a softening point (B. and R.) from 125‹ to 175‹ C. and the composition having a viscosity of 10,000 to 15,000 cp. under the above conditions.
Patent GB-747126-A (GB)
Title: A sampling device for continuous supply of gas
IPC: G01N1/00
Filed: 1954-02-03
Abstract: A periodic sampling device for extracting a constant mass of gas per unit time from a continuous gas supply comprises two relatively rotating contacting members 3, 7 having sampling channels 8, 10, respectively, communicating periodically during rotation and thermal means 13 for displacing one of the members and varying the channel section to compencate for temperature-volume changes in the gas.  An electric motor 5 rotates the sleeve 3 within the sleeve 7 so that gas pumped into pipe 17 and escaping at 9 is periodically led to a gas analyzer connected to the flexible tube 12 when the channels 8, 10 coincide.  The sleeve 7 is carried on bimetal strips 13 the outer ends of which flex downwardly on a knife edge 14 on an adjustable ring nut 18 when the gas temperature rises and increase the overlapping area of the channels.  In another embodiment the sleeve 3 is lowered by the bimetal strips and the gas enters through ports in sleeves 3, 7.  The members 3, 7 may be relatively rotating discs, one of which is displaced by the bimetal. Specification 714,898 is referred to.
Patent GB-418738-A (GB)
Title: Improvements appertaining to the pattern surface mechanism of jacquard machines
IPC: D03C3/24
Filed: 1934-02-05
Abstract: 418,738. Jacquards for looms. HARDAKER, H., Holmfoot, Ilkley, Yorkshire. Feb. 5, 1934, No. 3290/33. [Class 142 (i).] The bar 7, which guides the needles, is moved vertically by means of a yieldable lever 8 controlled by a pattern surface 6, 6<a> on a barrel 10 into two positions, the needles 2 engaging correspondingly with either upper rows of holes and blanks on the pattern cards on the cylinder B to produce a figured part of the pattern, or with lower rows of holes &c. to produce a plain part of the weave. This barrel 10 is rotated by a pawl 11 on a lever 15 on a shaft 5 operated by lever mechanism and an eccentric. The engagement of the pawl 11 with the barrel is controlled by a cam-wheel 12 and by a member 22 operated by a lever, a spring 19b, and two jacquard hooks 3<a>. These are controlled by needles governed by special openings in the pattern cards. The cam wheel can be intermittently rotated by a pawl 13 pivoted to the lever 15 engaging a ratchet wheel 13<a> fixed to the cam-wheel, but, normally when the part 22 is lowered the pawl moves idly over a long tooth 13<a> and the cam-wheel is stationary. When the part 22 is raised, this raises the pawl 11 and a projection 11<a> therein enters a groove &c. 12<a> in the cam wheel. As the raised pawl 11 oscillates, it turns the barrel 10 and at the same time turns the cam wheel a quarter of a revolution thereby bringing the small teeth on the ratchet wheel 13<a> into the path of the pawl 13. The part 22 now drops, the projection 11<a> leaves the groove &c. 12<a>, and the cam wheel has now been turned to such a position that if the hooks 3<a> are raised the spring 19<b> yields and the part 22 is not raised to its full extent as the projection 11<a> cannot enter the groove 12<a>. After several movements of the pawl 13 the cam wheel is turned again into position with its groove &c. 12<a> beneath the projection and with the pawl 13 working over the long tooth. Both pawls 11, 13 now work idly and no change occurs till the part 12 is raised again.
Patent GB-1152964-A (GB)
Title: Substituted Imidazoline Derivatives
IPC: C07D401/12
Filed: 1968-01-22
Abstract: 1,152,964. Antihypertensive &c. compositions. BOEHRINGER INGELHEIM G.m.b.H. 22 Jan., 1968 [20 Jan., 1967; 21 Aug., 1967 1-5 Dec., 1967], No. 3339/68. Heading A5B. [Also in Division C2] Pharmaceutical compositions comprise a compound of formula I: in which A is a heterocyclic ring system with aromatic character, if desired substituted by one or more alkyl and/or alkoxy groups with 1-3 carbon atoms, chlorine or bromine atoms or phenyl groups, which optionally may themselves carry one or more alkyl groups with 1-3 carbon atoms, the said ring system consisting of either a 5- or 6- membered ring, a fused 5- and 6- membered ring or two fused 6-membered rings and containing 1-3 hetero atoms at least one of which is a nitrogen atom or a physiologically acceptable acid addition salt thereof in conjunction with a suitable carrier or diluent and optionally other antihypertensive and/or saluretic agents, e.g. benzothiadiazines and/or spasmolytics, or psychosedatives. The active ingredients of formula I exhibit anti-hypertensive activity and some also possess analgenic, secretion-inhibiting, vasoconstricting and/or sedative activities. The compositions may be administered, orally or parenterally.
Patent GB-344615-A (GB)
Title: Improvements in or relating to playing-nets for lawn tennis and like games
IPC: A63B61/04
Filed: 1930-01-31
Abstract: 344,615. Lawn-tennis &c. nets. CARVER, E. C., Elphick's Charity, Burgess Hill, Sussex. Jan. 31, 1930, No. 3421. [Class 132 (ii).] A height-adjuster for use at the centre of a lawn-tennis or like net comprises a loop of webbing connected to a ground anchor e, the two ends a, b of the webbing being provided with eyelets f and being drawn together by means of a cord or lace g threaded therethrough. The free end of the cord is secured by passing it around a spring-button h. The connection between the webbing and the ground anchor comprises a chain o and hook d. A flap may be attached at or near one end of the webbing to cover the lacing.
Patent GB-892827-A (GB)
Title: Process for the production of direct positive images
IPC: G03C8/06
Filed: 1959-01-30
Abstract: 892,827. Photographic direct positive image production. AGFA A.G. Jan. 30, 1959 [Feb. 1, 1958(2)], No. 3441/59. Class 98(2). A process primarily directed to the silver salt diffusion transfer procedure comprises wetting negative and positive layers with developer liquid, bringing them into contact by means of a developing apparatus provided with a pair of pressure rollers, and drying by passing them through a device directly connected to the developing apparatus following the pressure rollers and which has a flat or curved heating surface and/or one or more pairs of heated rollers. The developing apparatus 6 having pressure rollers 5 followed by a web 4, which may be heated, and then by heated rollers 3 mounted on bearing plates 2 fixed on base-plate 1 may be used for the process. Four further figures, not shown, illustrate variations of the web and roller heating arrangements. Specification 814,154 is referred to.
Patent GB-671980-A (GB)
Title: Improvements relating to chairs
Inventor: JAMES JOHN NORMAN
IPC: A47C7/46
Filed: 1950-02-13
Abstract: 671,980. Seats; furniture frames. EVERTAUT, Ltd. Nov. 6, 1950. [Feb. 13, 1950] No. 3574/50. Class 52 (ii). A chair with an open back frame has fitted thereto a back rest consisting of a resilient flexible plate or panel of sheet metal attached at its upper end to the top of the back frame and at its lower end to the rear portion of the seat. As shown the flexible panel 9 is secured at 12 to the rear of the seat 5 and at 10 to the top of the back frame 1. The flexible panel 9 may be bent to provide a portion 9a the panel thus conforming to the shape of the back frame 1 while an upholstered back pad 11 may be fixed as shown. In modifications the flexible panel may comprise a bowed part at its lower end or it may be corrugated above and below the pad 11. The chair shown is intended for stacking purposes and comprises back and seat frames 1, 2 fixedly secured together in crossed relation and provided with feet 6, 3. The seat is recessed at the sides of its rear part and the back panel 9 leaves openings between it and the back frame 1 to permit a similar chair to be lowered into stacked relationship with it.
Patent GB-868212-A (GB)
Title: Improvements in holders for fastening elements on hand and power-operated tools
IPC: B25B13/48
Filed: 1958-02-04
Abstract: 868,212. Screw-drivers; spanners. CHRISTMAS, J. T. April 14, 1959 [Feb. 4, 1958; April 15, 1958], Nos. 3610/58 and 10002/58. Class 61. A screw or nut retaining device for a screw-driver or box spanner comprises one or more flexible fingers 7, Fig. 1, attached to a split tubular member 6 which is slidable over the tool shank to release the screw or nut. The device may be extended by a strip 12 coupled to an outwardly bent strip 10 in the region of the handle of the tool and engageable by the operators thumb. A modified device for a flexible screw-driver 14, Fig. 5, comprises a tubular member 6 which is coupled to the thumb-operated strip 10 by means of a flexible cable 16. Jointed tubular members 18, 19 set to the required angular portion of the screw-driver provide guideways for the cable 16.
Patent GB-1535263-A (GB)
Title: Rotary positive-displacement fluid motor or pump having blade construction
IPC: F03C7/00
Filed: 1976-01-30
Abstract: 1535263 Rotary positive-displacement fluid machines EMPIRE OIL TOOL CO 30 Jan 1976 [31 Jan 1975] 03735/76 Heading F1F In a pump or motor having flexible vanes 34 secured in slots 36 in a rotor 6 each vane is biased by its own resilience and by fluid-pressure against a stop 42 defining part of slot 36 and acting on the centre of pressure of the vane portion 34b, a cavity 58 being formed between the wall 40 of slot 36 and the low-pressure face of vane portion 34b to allow some radially inward movement of vane portion 34b. The vane is secured by a plate 48 and screws 50 having locking washers 76, and has reinforcing plates 52, 54, the former co-operating with stop 42 and having a tail portion 52a which engages stop 42 to limit inward folding of the vane portion 34b. The inward movement of vane portion 34b allowed by cavity 58 is controlled and opposed by a series . of buttons 60 along the junction of vane portions 34a, 34b. The casing 2 has inlet and outlet ports (22, 24) Fig. 1 (not shown) and abutment members (14, 16), the outlet ports (24) terminating a short distance upstream from the start of an abutment so that a pocket of fluid may be trapped and thus start inward movement of the vane before it strikes the abutment thus cushioning the vane and reducing wear.
Patent GB-197392-A (GB)
Title: Improvements in pistons for use in fluid pressure engines
IPC: F02F3/00
Filed: 1922-02-09
Abstract: 197,392. Talbot, E. Feb. 9, 1922. Pistons; guiding means within cylinder; connecting-rods.-In a piston of the type in which a skirt or slippers are attached to an extension of the head of reduced diameter, the skirt or slippers may be each in two parts, or a one-piece skirt may be employed with a packing piece inserted at the junction between the skirt and the head. In the latter case the packing-piece may carry integral gudgeon-pin bosses. The piston head 'A, Fig. 5, preferably of aluminium alloy, is formed with an extension A<2> having an outer flange A<3> to which the flange H<2> of a cast-iron or other skirt is secured. The latter is formed with a waist H<4> and may be divided in the plane of the waist, or, as shown, may be in one piece. In the latter case a packing piece G is inserted between the skirt and the head. The gudgeonpin bosses G<2> may be formed integral with the packing piece G, the extension A<2> and the skirt H being recessed to accommodate them. In modifications the extension A<2> is continuous with the ring-carrying portion of the head and is formed with an inner flange A<3> to which are secured a one-piece skirt and a distance piece, or a two-part skirt B, C, Fig. 6. Oil scraped by the edge C<3> of the skirt may pass by suitable channels to the gudgeon-pin bearings. In the case of a piston for a two-stroke engine leakage is prevented by a packing-ring in a groove in the extension A<2> bearing on the interior of the skirt. Where slippers are employed instead of a skirt the extension A<2> may have flat sides carrying the gudgeon-pin bosses.