baber/WOPTO huggingface dataset:
Patent GB-592625-A (GB)
Title: Improvements in relation to paper pulp refiners, beaters and the like
IPC: B02C2/10
Filed: 1944-12-13
Abstract: 592,625. Paper-pulp refining-machines. FRASER, D., CONOLLY, A. L., and FOGG, P. H. Dec. 13, 1944, No. 25013. [Class 59] [Also in Group XXIX] In a paper-pulp refining or like machine of the kind in which the material to be treated is fed between the co-operating blades or bars of a rotary conical beater roll and a non- rotary conical shell capable of axial movement relative to one another, such movement is effected by fluid pressure acting on a double-acting ram formed as a differential piston acted on both sides by a common fluid pressure supply also connected to a compressed gas supply so as resiliently to maintain the said fluid pressure, means being provided to exhaust one side of the piston when a predetermined overload on the machine occurs. The driving motor of the machine is also cut out when the predetermined overload occurs. Fig. 1 shows a pulp refiner A comprising a rotor 1 enclosed in a stator 2 both having beater blades 6. The stator is slidable in guides 4 under the action of a ram B. The latter comprises a piston 8, Fig. 3, and a reduced part 10 operating in a cylinder 7. Hydraulic fluid such as oil is normally supplied to both ends of the ram through pipes 12, 14 by a hand or motor driven pump such as C drawing from a reservoir 19. A gauge 23 on the delivery pipe 20 indicates when the desired pressure is attained. The pipe 12 is joined to the system through a control valve F which is normally held upon by an electromagnetically operated latch 44. A gas bottle E containing an inert gas such as nitrogen is also connected to the hydraulic system to give it resilience, such connection being made through a relief valve D and a four-way junction 21. An isolating valve 22 and a filling valve 24 are provided. Due to the differential action of the hydraulic pressure on the piston 8 the rotor and the stator are normally maintained in contact to the desired degree. Should the refiner tend to choke due to insufficient water, unsuitable material or other cause, the ram is able to give to a certain extent to prevent excessive load on the driving motor. When, however, an overload occurs, a relay H which acts also as an ammeter, operates directly or through an auxiliary relay (not shown) a circuit-breaker for the driving motor and also an electromagnetic latch G having a retractable arm 44. The latter releases a lever 32, Fig. 4, which opens an exhaust valve 40 connecting the pipe 12 to an exhaust conduit 26. The lever 32 is actuated by a spring-pressed piston 33 having a rod 31 which normally holds a spring-closed ball valve 29 from a port 27 connecting the hydraulic system to the pipe 12. In a modification, the rotor is movable axially by fluid pressure instead of the stator.
Patent GB-343986-A (GB)
Title: Improvements in or relating to the production of cellulose esters and cellulose ester products therefrom
IPC: C08B3/00
Filed: 1929-08-16
Abstract: Cellulosic material containing more than 8 per cent, and particularly 10 to 30 per cent or more, of water is esterified by the processes of Specifications 309,201, 312,095, 312,096, [all in Class 2 (ii), Cellulose &c.], 342,738, 342,739, and 342,740. The starting material is preferably subjected to a pretreatment, for example, with organic acids, or with hydrohalide acids or halide salts, or mixtures of the said acids and halide salts. Chemical wood pulps may be subjected to an alkaline purifying treatment followed by treatment with organic acids as described in Specification 249,173, [Class 2 (ii), Cellulose &c.].  The cellulosic material is preferably impregnated with the water some time prior to effecting the esterification, or prior to the pretreatment.  The water may, however, be introduced during the alkaline treatment referred to above, the materials being washed with water after the treatment and the excess water removed by any suitable means.  According to examples, (1) cotton linters are allowed to stand in water overnight and then centrifuged or pressed down to 10-20 per cent of water, after which they are preheated with glacial acetic and esterified; (2) sulphate wood pulp is treated as in Specification 249,173, [Class 2 (ii), Cellulose &c.], with 2-3 per cent caustic soda, washed, treated with acetic acid, again washed and centrifuged or pressed down to 15-25 per cent moisture content.  It is then pretreated with glacial acetic acid and finally acetylated. Specifications 263,938 and 312,098, [both in Class 2 (ii), Cellulose &c.], also are referred to.  Reference has been directed by the Comptroller to Specifications 309,201, 312,095, and 312,096, [all in Class 2 (ii), Cellulose &c.].
Patent GB-1418847-A (GB)
Title: Ink composition
IPC: C09D11/02
Filed: 1973-05-25
Abstract: 1418847 Acrylic inks containing natural resins SAKATA SHOKAI Ltd and LION FAT & OIL CO Ltd 25 May 1973 [29 May 1972] 25058/73 Heading C3P An ink composition comprises an acrylic resin and at least one of copal dammar and shellac natural resins dissolved in a mixed organic solvent. Exemplified inks comprise butyl methacrylate-copolymer, Sumatra dammar, polyethylene wax, dimethylpolysiloxane antifoaming agent, dioctyl phthalate or dicyclohexyl phthalate plasticizer, a pigment which is watchuing red, phthalocyanine blue, iron oxide red, Ca amine 6B, or dis-azo yellow, and as solvent an isopropanol/ethyl acetate/toluene mixture ethanol/ethyl acetate/methyl Cellosolve (Registered Trade Mark) mixture or an isoprodanol or ethyl acetate/toluene/ethyl Cellosolve mixture.
Patent GB-931813-A (GB)
Title: Improvements in or relating to a work-piece positioning device
IPC: B23Q3/10
Filed: 1960-08-18
Abstract: 931,813. Work-holders. A. J. WEAVERS, R. C. PORTER, and W. J. SLAUGHTER. Nov. 9, 1961 [Aug. 18, 1960], No. 25061/60. Class 83 (3). [Also in Group XXIII] A workpiece positioning device comprises a block having six planar faces and holes 2a, 2b, 2c in one surface, at the corners of a square, for supporting an angle bar or the like. The holes are formed directly in the block or in bushes. Screw-threaded holes 4a &c., are also provided. A workpiece may be set at a required angle by locating it against fences 5, 6 and setting the block by inserted ball feet 5b contacting slip gauges 6b. Alternatively, rods 17b, Fig. 4, rest on slip gauges 14. In a further modification, a bar 19, Fig. 5, is mounted by pegs in holes 18a &c. set in a circle, so that a workpiece set against a stop 20 may be located at a particular angle. A workpiece 21, Fig. 7, can be clamped against a fence 22 by a screw 25.
Patent GB-982254-A (GB)
Title: Improvements in or relating to inverter circuit arrangements
Inventor: DAWSON LESLIE HOWARD
IPC: H02M7/515
Filed: 1962-06-29
Abstract: 982,254. Inverting. MARCONI CO. Ltd. Jan. 4, 1963 [June 29, 1962], No. 25078/62. Heading H2F. In an inverter having a centre-tapped transformer 2 connected through two silicon-controlled rectifiers 8, 9 to a D.C. source, an inductor 15 is connected in series with the commutating capacitor 3 across the transformer to form with it a resonant circuit. At each commutation, the energy which was stored in the capacitor is received by the inductance and then the inductance recharges the capacitor with the reverse polarity. This avoids the dissipation of the stored energy twice in each cycle. In the Figure, diodes 11, 12 are connected across the silicon-controlled rectifiers to carry reverse current, and the D.C. smoothing inductor 6 also has a diode across it. Other embodiments (Figs. 3-6, not shown) are bridge circuits, with different arrangements of the commutating capacitor and inductor and output transformer.
Patent GB-891012-A (GB)
Title: Improvements relating to air inlet bypass control systems
IPC: F02C7/057
Filed: 1959-07-22
Abstract: 891,012. Gas turbine plant. UNITED AIRCRAFT CORPORATION. July 22, 1959 [July 22, 1958], No. 25174/59. Class 110 (3). [Also in Group XXXVIII] The air supply to the turbojet power plant of an aircraft is automatically controlled in accordance with the Mach. number, the temperature and pressure upstream of the compressor, and the engine R.P.M. As shown (Fig. 1), the Mach number is determined by a probe cone 20 positioned in the free air stream measuring the total pressure PT 1  and the static pressures PS 1 , PS 2  on opposite sides of the cone. The average static pressure is divided by the total pressure at 32 to give a signal representing the Mach number, and the difference between the two static pressures gives a signal representing the angle of attack. These are combined at 64 to determine the air inflow to the turbojet WC 1  via inlet 12. The required air flow to the engine is obtained from the air temperature measured at 80, and the air pressure measured at 82, at positions immediately upstream of the compressor 14, the signals being combined at 104 to give the required air flow signal WC E , which is subtracted from the actual air flow WC 1  to give a signal representing the excess air WC B , which after modification at 110, is fed to a servomotor 114 controlling the by-pass door 116. In a modification (Fig. 8, not shown), correction for the angle of attack is omitted.
Patent GB-151977-A (GB)
Title: Improvements in application of the bark (suber) of melaleuca leucadendron to thermic, hydraulic and di-electric devices
IPC: B27K7/00
Filed: 1920-09-01
Abstract: 151,977. Roussan, P. E. H. Oct. 3, 1919, [Convention date]. Detachable ship structures form rafts. - The bark of the Melaleuca leucedendron, a tree common in Australia and South China, where it is known by the names " niaculi, tram, tramÚ, " is used as a non-conducting covering for heat and sound, an electric insulator, buoyant bodies, and for all purposes for which cork is employed. The bark is cut into blocks, p ates, &c., which are cleaned, treated with alkali to remove resin from the superficial layers, and then with dilute acid to eliminate carbonate and oxalate of lime, after which the objects are dried and coated with paraffin or the like. Waste may be shredded and mixed with an agglutinant
Patent GB-856408-A (GB)
Title: Improved liquid motor fuels
IPC: C10L1/14
Filed: 1959-07-23
Abstract: A gasoline composition contains a tetraalkyl lead compound and 0.25 to 1.0% by volume of a tertiary butyl ester of an aliphatic carboxylic acid containing 2 to 4 carbon atoms.  In examples gasolines contain tetraethyl lead, tertiary butyl acetate, tertiary butyl propionate and tertiary butyl butyrate.
Patent GB-1183574-A (GB)
Title: Knitting Method
Inventor: ROBINSON FRANK
IPC: D04B15/00
Filed: 1966-06-07
Abstract: 1,183,574. Knitting. COURTAULDS Ltd. 6 June, 1967 [7 June, 1966], No. 25251/66. Heading D1K. [Also in Division A3] A knitted garment is produced on a two bed flat knitting machine by simultaneously knitting a number of tubular portions and then joining them together to form a single tubular portion and continuing to knit that or vice-versa wherein the wales in the portions lie at an angle to each other in the finished article. As shown in Fig. I a Raglan style pullover is formed in this way. Firstly six welts 4 are produced, three on each bed, and then three tubular portions 1, 2 and 3 comprising body and sleeve portions are formed by three separate yarn carriers 7, 8 and 9 Fig. 3, knitting taking place on one needle bed on one traverse and on the opposite needle bed on the return traverse of the yarn carrier and cams. When the knitting has reached the arm hole 5 the arm portions which have been separated by one needle space, 11, from the body portion are moved inwardly so that the loop 13 is transferred to the needle 14 and all other arm loops are correspondingly moved as in line B of Fig. 3. Tubular knitting is continued as in line C on all body and arm needles and the body and/or arm portions are decreased according to requirements. Various types of sleeves and shoulder patterns can be produced by decreasing or by increasing with the use of tuck loops formed in the opposite bed. Garments can be shaped in three dimensions by increasing the number of needles used on one bed once in a given number of courses. Garments such as "cat-suits" can be produced by knitting initially four tubular portions and eventually joining them up to form a single tubular portion.
Patent GB-995052-A (GB)
Title: Improvements in or relating to the recovery of metallic lead
IPC: C22B13/02
Filed: 1963-06-25
Abstract: Lead is recovered from a lead product, especially a by-product, in the manufacture of tetraalkyllead compound by reacting on alkyl chloride with lead monosodium alloy, which contains finely divided metallic lead, water and lesser amounts of PbO and PbS, by mixing the lead product with 0.4-1.2% by weight NaOH based on the metallic lead, drying the mixture by heating it at 100-160  DEG C. with agitation until the water content is reduced to 1-6% by weight, heating the dried mixture in a reverberatory furnace at 650-1200  DEG C. to melt the lead and convert PbO and PbS to metallic lead, and separating the molten lead from the reaction mixture. The lead product usually consists of by weight 76-89% of finely divided metallic lead, 9-19% of water, 0-0.05% NaOH, up to 2% total of PbO and PbS and 0-4.5% total of graphite and aluminium hydroxide (latter present when by-product of tetramethyllead). The NaOH may be mixed with the lead product in the form of an aqueous solution or as anhydrous flake. The drying may be effected continuously in a steam-heated drier containing a screw type agitator and conveyer. Up to 10% of lead dross, based on the weight of the lead product, may be added to the dried mixture in the furnace, the dross consisting of by weight 86-97% of metallic lead, 2-8% PbO and 1-6% PbS.  U.S.A. Specifications 2,691,575, 2,692,197 and 2,899,296 are referred to.
Patent GB-323719-A (GB)
Title: Improvements in or relating to apparatus for separating and/or classifying suspended matter from fluids
IPC: B01D46/04
Filed: 1928-09-04
Abstract: 323,719. Waring, H., and Associated Lead Manufacturers, Ltd. Sept. 4, 1928. Density separators.- Dust &c. is separated from gases by a downwardly directed conical separating chamber 1 having a tangential inlet 9 at the top and a bottom discharge outlet 12 and containing a perforated cone 11 also having a discharge outlet. Coarse dust &c. is separated in the outer space 10. The partly c le a n e d gas flows through the perforations and through apertures in a cover plate 5 to filter bags 6 suspended by a counterweight. The holes in the plate 5 are obturated in turn by a plate 14 rotated slowly through a worm wheel; dust &c. falls from the interior of the bag thus isolated and descends afterwards into the inner cone 11. The perforations in the cone may be circular flanged holes or slots. Several coaxial perforated partitions may be used with the perforations of adjacent partitions staggered.
Patent GB-1368695-A (GB)
Title: Setting of contacts on a support
IPC: H05K13/04
Filed: 1972-05-31
Abstract: 1368695 Riveting; shearing E H B O E E VON GRAEVE 31 May 1972 [8 June 1971] 25430/72 Headings B3U and B3W A method of setting a contact 74, Fig. 4, in a support 72 comprises feeding a wire 70 to a severing station, severing a predetermined length of the wire, pushing the severed length into the support, and riveting the severed length to the support, the operations of feeding, severing and pushing the wire being controlled sequentially by cams 41-43 during each cycle of a press 44, 45. In operation the plate 44 of the press is moved upwardly to the position shown in Fig. 1, the upward movement disengaging cam 41 from roller 24 to enable a slide 23 and consequently a shear blade 21 to move to the right, under the action of a spring 27, until orifice 25 of the blade 21 is aligned with an orifice (28) in shear blade 22. Following the disengagement of cam 41 from roller 24, the cam 42 leaves a roller 15 to allow a slide 11 to move to the left under the action of spring 12 and simultaneously feed a predetermined length of wire into the orifice 25 of blade 21. The plate 44 is then moved downwardly so that the cam 42 engages the roller 15 to push the slide 11 to the right and thereby load the wire supply for a new cycle. The cam 41 then engages the roller 24 to push the blade 21 to the left to shear the previously fed wire length and feed it to a position opposite the orifice 71 of the support. The cam 43 then pivots a lever 31 so as to move a push member 33, 34 upwardly to insert the sheared length into the support. On upward movement of the plate 44, the support is removed from the press to a riveting device where the sheared length is riveted to the support. A plurality of wire lengths may be fed to a support and the sheared lengths of wire can punch their own holes.
Patent GB-200740-A (GB)
Title: Automatically rotating transparency displaying lantern
IPC: G09F23/00
Filed: 1922-09-20
Abstract: 200,740. Lennard, F. M. Sept. 20, 1922. Cylinders, prisms, and like elements, rotating; optical-projection apparatus, applications of; actuating.-A polygonal or other shaped drum 30 which carries slides or transparencies illuminated by a central lamp 19 is rotated by convection currents acting upon vanes (not shown), means being provided to temporarily arrest the rotation of the drum. The slides may be viewed directly or upon a screen 13 on to which advertisements or pictures are projected. The means for arresting the movement of the drum comprise pins, carried by the drum itself, which engage a freely suspended mass which, when struck, moves out of the path of the pins. Ventilation gratings 17, 18 are fitted to the casing 10.
Patent GB-789658-A (GB)
Title: Improvements relating to settling tanks
IPC: B01D21/18
Filed: 1956-08-22
Abstract: 789,658. Gravity separation apparatus. HARTLEY, C. J. Aug. 22, 1956, No. 25612/56. Addition to 700,940. Class 111. A circular settling tank 10 has scrapers, in the form of two curved blades 29 oppositely arranged and joined by a blade 31, suspended from a rotating cross bridge 20 so that sludge settling in the tank is directed inwards from the periphery and outwards from the centre into an annular path of the point of convergence and is deposited into sumps or wells 34 from where it is withdrawn by pipes 37 to a common receiver 38. Two sets of blades may be used as shown in the Figure. In a modification the cross bridge 20 carries a suction pump, which may be of the type described in Specification 685,544, having a pipe extending downwards and forward of the blade 31 for withdrawing the sludge in which case the sumps 34 are omitted. The floor of the tank 10 may be flat or may slope inwardly on either side to the point of convergence of the blades.
Patent GB-1341764-A (GB)
Title: Razor head
IPC: B26B21/32
Filed: 1971-04-19
Abstract: 1341764 Razors GILLETTE CO 19 April 1971 [8 April 1970] 25613/71 Heading B4B A razor head 2 comprises a pivoted cap member 6 provided with a catch 8 adapted to cooperate with a hook device 10 which is actuated by an actuator 26 under the influence of a spring 20. The hook device is provided with a pivot pin 16 engageable in slots 18, the spring 20 being engaged with the pin. A cam surface 22 is formed on the hook device so that as the cap is closed, the catch rides on the cam surface thereby causing the hook 14 to snap into engagement with the catch. A detent (40) Fig. 5 (not shown) may be provided in order to cause a more rapid closure. In a modification, a toggle lever 50 may be pivotally connected to the hook device and actuated by the actuator 26. In the embodiment shown in Fig. 7, a guard member 66 which can be raised or lowered to adjust the coarseness of the cut by means of a threaded nut 60.
Patent GB-320484-A (GB)
Title: Improvements relating to expanders for piston rings & the like
IPC: F16J9/06
Filed: 1928-09-07
Abstract: 320,484. Andrews, E. S., (Simplex Piston Ring Co. of America, Inc.). Sept. 7, 1928. P i s t o n-packing.- The tension of a wave spring E, employed for expanding a radiallythin packing-ring D, is varied by altering the radius of curvature of the bends E<1>, E<2>, without altering the distance apart of the centres of curvature. The temper of the spring is drawn at a temperature in excess of the maximum temperature to which the spring is subjected in the engine.
Patent GB-192444-A (GB)
Title: Improvements in or relating to neck-ties
IPC: A41D25/00
Filed: 1921-10-01
Abstract: 192,444. Hogan, J. P., and Hird, F. Oct. 1, 1921. Neck - ties. - In a knitted neck-tie elastic threads are incorporated into the neck-band during knitting to enable the knot to 'be tied away from the collar when the neck-tie is stretched. Elastic threads may be incorporated throughout the tie or may be knitted into portions such as a, a<1> and b, b<1>.
Patent GB-152521-A (GB)
Title: Improvements in or relating to lathes
IPC: B23Q35/10
Filed: 1919-10-23
Abstract: 152,521. Tardy, H. Oct. 23, 1919. Lathes; beds and frames; headstocks; tailstocks. - The headstock and tailstock of a lathe are braced by a sliding bar J, Fig. 1, passing through split clamps F, G either wholly or in part integral with the headstock and tailstock respectively. The bar may serve to mount copying, feeding, steadying, and tailstock spindle details. Specification 126,991 is referred to. Copying mechanism; feed motions, tool.-A lever pivoted on the bar J, Fig. 3, has a roller K<4> on one arm engaging a cam N formed on the periphery of a faceplate or otherwise driven by the mandrel. The other arm engages the slide rest at K<2>. In a modification a grooved templet O, Fig. 4, pivotally mounted on the slide rest engages a pin P' carried by a bracket on the bar. Centre rests.-A centre rest R, Fig. 6, may be carried by the bar. Such a rest does not obstruct the saddle. Tailstock spindles and spindle feeds.-The tailstock spindle is hollow throughout and the forwardend is coned to receive the centre or other tool or a bush U, Fig. 1, with a square or other hole for guiding a pump-spindle V fed by a lever pivoted to a fitting carried by the bar J.
Patent GB-1276927-A (GB)
Title: Improvements relating to fluid flow control valves
Inventor: MARSHALL JOHN STEPHEN
IPC: G05D16/10
Filed: 1969-05-22
Abstract: 1276927 Valves RUBERY OWEN & CO Ltd 3 June 1970 [22 May 1969] 26054/69 Heading F2V A landed spool valve is provided with a regulating valve 10 carried in the spool and responsive to the rate of flow across a metering orifice 11, so as to maintain a constant flow rate e.g. in the position where a service port 4 is connected to exhaust 7 through radial ports 15, 16 in the spool. A tapered needle 17 in the spool extends into the orifice. The needle may be profiled to give two flow rates, e.g. in lowering a load on a fork lift truck a relatively slow lowering rate initially may be followed by a higher rate in a lower position of the load where risk of overturning in the event of an abrupt halt is less. The needle is adjustable.