baber/WOPTO huggingface dataset:
Patent GB-362785-A (GB)
Title: Manufacture of artificial threads, bands, films and the like
IPC: D21C9/08
Filed: 1931-03-02
Abstract: Artificial threads, bands, films, &c., of cellulose or cellulose derivatives are prepared from solutions prepared from a cellulose pulp made from the wood of deciduous trees, e.g. beech or aspen, by the sulphite process, such pulp being subjected to refining by means of alkali.  Such pulp forms a substitute for cotton, yielding clear solutions and white products.  In the manufacture of viscose only about one-fourth of the usual quantity of fresh alkali lye is necessary for mercerization.  In examples, (1) viscose is prepared unripened alkali cellulose obtained by mercerizing refined beech wood pulp with 18 per cent caustic soda for 3 hours at 16 DEG  C., the solution being spun after a single filtration into a sodium bisulphate bath: (2) beech-wood pulp, refined by a known alkaline refining process, is treated with freshly precipitated basic copper sulphate and then with ammonia to obtain a 10-20 per cent solution: (3) refined beech-wood pulp is sprinkled in a closed vessel with glacial acetic acid and allowed to remain for some hours and is then gradually introduced into an esterifying mixture of glacial acetic acid, acetic anhydride and sulphuric acid monohydrate, the temperature being kept down by cooling so that in 3-4 hours it rises from 10 to 20-30 DEG  C.; a clear solution results, which is hydrolysed to give acetone solubility, and precipitated and, if necessary, lightly bleached and dried; a 20 per cent acetone or acetone-alcohol solution may be worked up on a casting-machine to produce films.
Patent GB-1210782-A (GB)
Title: Improvements relating to flame type glow plugs in internal combustion engines
IPC: F23Q7/00
Filed: 1969-02-06
Abstract: 1,210,782. Starting; heating induction pipes. DAIMLER-BENZ A.G. Feb.6, 1969 [Feb.7, 1968], No.6443/69. Headings F1B and F1K. An air compressing internal-combustion engine has a flame-type glow plug 13 disposed in the air induction pipe 11 and comprising at least one glow element 19 which can be heated and which is connected to fuel supply means. The part of the plug projecting into the pipe is surrounded by a protective cap 17 which is open on the side towards the engine and substantially closed on the other side and which is fixed to the wall of the pipe and surrounds an opening through which the plug is inserted in the pipe. The cap may be provided with at least one small hole on the upstream side thereof.
Patent GB-374087-A (GB)
Title: Improvements in or relating to ventilating window panes
IPC: E06B7/02
Filed: 1931-03-02
Abstract: 374,087. Window ventilators. McMANN, W. R., 600, West 113th Street, New York, U.S.A. March 2, 1931, No. 6486. Classes 20 (iii) and 137.] A window pane 6 is formed with a bulged portion 6a terminating in an offset edge at one end of the pane thereby providing a ventilation aperture. The pane is provided with a metallic edging 7 on three straight sides, a corresponding cap or bar 8 straight across the fourth side and an edging 9 on the offset edge. A hit- and-miss regulator 11 controls the passage of air through the aperture between the edging 9 and' bar 8. When incorporated in a sliding sash window, the bulge is arranged inwardly with the aperture uppermost in the case of a lower sash and outwardly with aperture at the bottom in the case of an upper sash. This arrangement prevents the entry of rain and avoids interference with the movements of the sashes. In a modification, as applied to a casement window, the pane is formed with an outward bulge 19a at the bottom and an inward bulge 19b at the top.
Patent GB-1240306-A (GB)
Title: Apparatus for dispensing reagents
Inventor: MORAN JOHN JOSEPH
IPC: G01N35/02
Filed: 1968-10-25
Abstract: 1,240,306. Reagent dispensing device. J. J. MORAN. 25 Oct., 1968 [14 June, 1968], No. 6504/70. Divided out of 1,240,303. Heading B1X. [Also in Division F1] Apparatus for dispensing controlled amounts of liquid reagents into a plurality of reaction tubes 24 containing samples to be analysed comprises a plurality of reagent flow lines, one end of each line being connected to a reagent container 38 and the other end being situated above a tube 24, valve means in each line, the valve means including a piston and cylinder assembly 280, 278 and two oneway valves 282, 284 to enable liquid to be drawn from a container 38 through valve 282 on the suction stroke of the piston and delivered on the forward stroke through valve 284 to the tube 24, and drive means for moving the piston within the cylinder. The row of reaction tubes may be carried by a transverse slat of an endless belt. The ends of the reagent flow lines 332 then pass through holes in a stationary bar 334 mounted across the belt. The apparatus may be automatically operated (see Specification 1,240,303).
Patent GB-885961-A (GB)
Title: Purification of gas containing hydrogen sulphide
IPC: C10K1/10
Filed: 1960-02-24
Abstract: 885,961. Purifying gas. GUINOT, H. M. Feb. 24, 1960 [April 4, 1959]. No. 6527/60. Class 55 (2). In a process for removing hydrogen sulphide from a gas containing hydrogen sulphide the gas is scrubbed with an aqueous solution of ferric salts in which the greater part of the iron is in the form of one or more ferric salts of lower aliphatic carboxylic acids and the remainder in the form of ferric sulphate. The ferric salts of mono- or di-carboxylic acids or hydroxy-carboxylic acids containing 2-4 carbon atoms, e.g. acetic, propionic, butyric and lactic acid, may be employed. In an example the scrubbing solution contained ferric iron in the following proportions by weight: ferric propionate 55%, ferric acetate 25%, ferric lactate 10%, ferric sulphate 10%. Used scrubbing liquid is regenerated by radiation with an oxygen-containing gas. Specification 769,854 is referred to.
Patent GB-879138-A (GB)
Title: Improvements in or relating to bobbins and to methods and apparatus for winding them
IPC: D01H1/36
Filed: 1959-02-25
Abstract: 879,138. Winding bobbins of yarn. PHRIXWERKE A. G. Feb. 25, 1959 [Feb. 28, 1958], No. 6600/59. Classes 120(2) and 120(3) A method of winding a bobbin comprises the steps of winding successive layers on the bobbin and terminating the winding of each layer at a point along the bobbin axis different from the point along said axis at which the starting end of the next preceding layer is located, and arranging the ends of the layers with respect to each other at each end of the bobbin in a manner which will provide, when the layer ends are radially projected in a plane which includes the bobbin axis with the projection of the trailing end of each layer at a slightly greater radial distance from the axis than that of the next preceding layer, a series of points located at each side of a central straight line in the said plane and located midway between the ends of the bobbin, straight lines interconnecting the series of points on one side of the central line forming a continuous line of a configuration different from a continuous line formed by straight lines interconnecting the series of points on the other side of said line, said continuous lines being asymmetrical with respect to the central line, one of the continuous lines having alternating portions obliquely directed toward and away from the central line and the other continuous line either having at least a major portion gradually approaching the central line or oscillating about a median line which gradually approaches the central line. In the arrangement shown for carrying out the method, gear box 1 houses a reversing drive for reciprocal rotation of an element threadedly engaging spindle 2 such that the latter is given a reciprocating axial movement. A flexible chain 3 is attached to the spindle 2 and to the ring rail, for example, of a spinning machine. A trip dog 4 is adjustably secured on spindle 2 and cooperates with two stops 5 and 7 mounted on control spindle 6 which is rotatable. Abutment of dog 4 against either stop causes reversal of the spindle 2. The stop 5 has a cam face and is fixedly mounted on spindle 6 so that rotation of the latter presents successive peripheral portions to the dog 4. The stop 7 is threadedly movable on spindle 6 and is secured against rotation by rod 8 such that rotation of spindle 6 causes gradual axial displacement of stop 7. This arrangement gives a pattern of winding traverse as shown in Fig. 1a. The stop 7 may also have a cam surface and it may also be releasably fixed to spindle 6 to give different winding traverse patterns at the lower end of the bobbin.
Patent GB-601445-A (GB)
Title: Improvements in or relating to purification of liquid halides
IPC: C01G1/06
Filed: 1944-04-11
Abstract: A liquid halide of a metal of Group IV of the Periodic Table is purified by precipitating the impurities therefrom by means of a reactive sulphide, e.g. hydrogen sulphide, methyl or ethyl mercaptans, arsenious or cuprous sulphides, antimony trisulphide or a reaction product of hydrogen sulphide and a halide of the type being purified.  The precipitated impurities may be removed by distillation of the liquid halide therefrom.  The process may be conducted under pressure.  In one modification, the liquid halide percolates through a tower packed with a porous bed of discrete inert solid particles while gaseous hydrogen sulphide flows therethrough.  In a further modification the halide is treated concurrently with hydrogen sulphide.  The halides specified are: the tetrafluoride, tetrachloride and tetrabromide of titanium, tetrachlorides, liquid bromides or fluorides of germanium or tin.  Specification 588,657 is referred to.
Patent GB-593135-A (GB)
Title: By-pass valve for hydraulic motors
IPC: B64C25/22
Filed: 1944-04-11
Abstract: 593,135. Hydraulic control valves. ADEL PRECISION PRODUCTS CORPORATION. April 11, 1944, No. 6652. Convention date, April 9, 1943. [Classes 69 (ii) and 135] [Also in Group XXXIII] A control valve for byepassing the flow from one end to the other of a hydraulic motor, especially for operating the landing gear of an aircraft, comprises the valve A arranged between the supply lines B, C to the ends of a motor E for operating the landing gear F. A distributing valve D controls the supply and exhaust of pressure fluid from a supply line G and an exhaust line H. As shown, when the landing gear is being lowered, pressure developed in the lower end of the motor E acts on a check valve 20 which opens to byepass the pressure fluid through a passage J to the top end of the motor cylinder, thus assisting the normal delivery from the supply pump through valve D. Towards the end of the stroke of the motor, the pressure builds up in the line C and the valve 20 closes, and the pressure from the lower end of the motor also builds up sufficiently to overcome a check valve 22 in a sliding piston member 7 to exhaust along line B to valve D and line H. For operation in the other direc- - tion, to raise the landing gear, the pressure fluid is supplied to line B and moves the piston member 7 to seat on a seating 9 to close the byepass passage J and open a passage 10, controlled by a check valve 12, to the lower end of motor E. The exhaust from the top end of the motor takes place through the line C directly back to the valve D and line H. Various different constructional forms of the valve are shown and described. U.S.A. Specification 2,267,284 is referred to.
Patent GB-601678-A (GB)
Title: An improved method of and means for securing asbestos-cement articles to each other,or to other objects
IPC: F16B21/08
Filed: 1945-03-16
Abstract: 601,678. Stud-and-socket fastenings. UNIVERSAL ASBESTOS MANUFACTURING CO., Ltd., and SNELLING, J. C. March 16, 1945, No. 6655. [Class 44] [Also in Group X] A one-piece fastening device C of spring metal for securing asbestos-cement articles to each other, or to other objects, e.g. tiles, and timber or concrete battens, comprises a straight tubular portion E, and a bulb-like lower portion shouldered at G and longitudinally slotted at F, to permit of its compression while going through the bored hole. The number of legs H formed by the slotting is optional. A portion of the bulb, e.g. half, engages the spalled hole I left in the asbestos-cement by the boring tool, and the post projects through the sheet B. The outer end D of the tubular portion E is spun or turned over to form a head which may be covered by a rosette, or the like, of any suitable metal to prevent the entry of moisture or air into the tube. Thus the sheets A and B are held together by spring-pressure located on the turned over part of the head D and on the shoulders G. Lateral pressure which tends to split the material, is obviated, for the pressure necessary for fixing is exerted in a direction parallel to the axis of the hole.
Patent GB-855087-A (GB)
Title: Production of perforated sheets
IPC: B21D31/04
Filed: 1957-02-28
Abstract: 855,087. Sieves. HEIN, LEHMANN & CO. A. G. Feb. 28, 1957 [Feb. 28, 1956], No. 6768/57. Class 117 [Also in Group XXII] A sieve consists of a sheet having rows of elongated irregularly shaped apertures, e.g., as shown in Fig. 9. The edges of the apertures may be raised to project from one or both of the surfaces of the sheet. The sheet is made by perforating between dies to form apertures 2 shaped, e.g. as shown in Figs. 1 or 3, having edges projecting from one or both sides of the sheet. The end surfaces of the raised projections 5 may be discontinuous or as shown at 8a in Fig. 1 may extend across the sheet. The sheet is subsequently rolled to force the projections 5 partially or completely back into the apertures 2 to form the finished sheet. Specifications 712,411 and 734,731 are referred to.
Patent GB-1497111-A (GB)
Title: Additives for alkali metal silicates
IPC: C07H3/02
Filed: 1975-02-18
Abstract: 1497111 Alkali-metal silicate composition IMPERIAL CHEMICAL INDUSTRIES Ltd 30 Jan 1976 [18 Feb 1975] 6773/75 Heading C1A [Also in Division C3] A composition suitable for use as a bonding/impregnating agent in the formation of foundry moulds or cores from sand comprises (a) water and dissolved therein (b) at least one alkali-metal silicate and (c) formose. The solution may also comprise (d) formaldehyde and (e) a compound which forms a resin therewith, or (f) such a resin (e.g. a phenol-, urea- and/or melamine-formaldehyde resin). The formose may be preformed or formed in situ from formaldehyde (e.g. in the presence of Ca(OH) 2  and dextrose). The composition may contain 1-6 parts by wt. of silicate (calculated as SiO 2 ) per part of formose and 4-30 parts per part of resin.
Patent GB-1170504-A (GB)
Title: Earth-Moving Equipment
IPC: E02F5/02
Filed: 1967-02-13
Abstract: 1,170,504. Trench back-filling equipment. KIEVSKOE OTDELENIE TSENTRALNOGO NAUCHNO-ISSLEDOVATELSKOGO INSTITUTA SVYAZI. 13 Feb., 1967 [12 Feb., 1966], No. 6794/67. Heading E1F. Tractor-mountable equipment for the backfilling of trenches is so provided with two scraper units 2, 4 that the two scraper-carrying endless chains of the units each circulates in a plane at right angles to the plane containing the other chain so that heaped back fill earth is broken up by the leading unit 4 and delivered thereby into the path of the unit 2 to be delivered thereby into a trench that is to be filled in.
Patent GB-525852-A (GB)
Title: Improvements in or relating to constant velocity universal joints
IPC: F16D3/30
Filed: 1939-03-02
Abstract: 525,852. Universal joints. BENDIX, Ltd., and IRVING, J. S. March 2, 1939, No. 6798. [Class 80 (ii)] In a universal joint, yoke members 34, 37 are secured by pins 35, 38 to the ends of shafts 30, 31. Swivel pins 40 at right angles to the pins 35, 38 connect the yokes. In order that the . lateral movement which takes place when the joint is rotating with the shafts not in alignment may be confined to the yoke members, the pins 35, 38 are anchored in the yoke members and extend through slots 36, 39 in the shaft ends. The joint may be enclosed in a two-part spherical housing 47, 48 which may be anchored or floating. The ends of the shafts may be located with a ball on one shaft end engaging a slot in the other.
Patent GB-379234-A (GB)
Title: Improvements in fabric take-up and stop device for knitting machines
IPC: D04B35/18
Filed: 1932-03-07
Abstract: 379,234. Knitting. SCOTT & WILLIAMS, Inc. and SWINGLEHURST, H., 366, Broadway, New York, U.S.A. March 7, 1932, No. 6801. [Class 74 (ii).] Relates to a stop-motion acting in case of a partial press-off of the fabric or in other cases of improper operation of a knitting-machine. The invention is described as applied to the take-up of a circular machine of large diameter in which the needle cylinder revolves. To stop or start the machine the clutch collar 20 is moved by a yoke 25 controlled by a hand-lever 26, which is moved to the left, for starting, against the compression of a spring surrounding a trip rod 28. A trip lever 29 normally engaging a notch in the rod is lifted and releases it upon the occurrence of any of the faults of operation for which it is desired to stop the machine. A row of detectors 110 is provided to become operative on a needle breaking or the latch being misplaced or on accumulation of yarn or fibre in the needle throat. When one is operated, a corresponding shaft 113 is released and slid upward, carrying with it an arm 117 and a twoarmed rocker 119. Pins 120 screwed into the underside of a rotary gearing then encounter the rocker and cause an annulus 122 to react with a lever 124 the lower end of which rides down the lever 29 and stops the machine. Downward motion of the take-up frame 32 in response to the growth of the fabric pinched between the rolls 30, 31 exerts pressure on a friction clutch 67 and results in operation of the roll 30 until the frame has risen again. When the weight of the rolls is not counterbalanced bv the normal amount of resistance of the fabric and the frame consequently descends to an abnormal position, the slotted end of a link 88, Fig. 4, moving therewith depresses a pin 97 on a latch 93. An actuator lever 91 is then released and a pin 91a thereon engages one of the notches 84 of a rotary stop ring 80. A catch 102 which normally supports a drop rod 105 may be operated by stops 101 in the ring 80, the resetting of the stopmotion being dependent on the proper position of the knock-off parts 28, 29.
Patent GB-700560-A (GB)
Title: Improvements in electrical systems more especially speed measurement systems for control purposes
IPC: H02P7/06
Filed: 1951-03-22
Abstract: 700,560. Automatic speed control systems. LAURENCE, SCOTT & ELECTROMOTORS, Ltd., and LANGHAM, E. M. March 24, 1952 [March 22, 1951], No. 6903/51. Class 38 (4). [Also in Group XXXVIII] A variable, e.g. speed, to be measured or regulated, is translated by one device to a proportional voltage A of high accuracy but subject to appreciable A.C. spurious components, and is translated by a second device to a proportional voltage B of less accuracy but devoid of spurious componets. The outputs A, B are passed through individual R-C networks such that the accurate signal is initially suppressed by its network and subsequently allowed to rise to a value corresponding to the variable, while the less accurate signal is initially transmitted by its network and subsequently dies away. The network outputs are then summed to indicate or regulate the variable. As shown, an electric motor 1, the speed of which is to be regulated, drives a D.C. tachogenerator 3 and an induction generator 2. The output from the D.C. generator 3, is compared with a standard voltage tapped from a potentiometer 15, fed from a source 16, and adjusted according to the desired motor speed, the difference (error) voltage B being applied through a differentiating network 19, 20,. to a register 22. The induction generator is of the squirrel cage or short-circuited wound rotor type having a two phase stator, one phase being duplicated. One of the duplicate phases is energized at 4 ; a constant reference voltage is taken at 6 from the other duplicate phase and through a phase shifter 7, 8 provides a voltage 7<SP>1</SP> in phase with the output 5 derived from the second measuring phase. The tapping 7<SP>1</SP> is adjusted to a reference value corresponding to the desired speed, the difference between this reference voltage and the measuring voltage (i.e. error voltage A) is taken from the junction of resistors 9, 10, amplified at 11, rectified at 12 and passed through an integrating network 13, 14 to a resistor 21. The outputs from the two networks 13 ... 14, 19 ... 20 are summed at 21, 22 and applied through D.C. amplifiers 23, 24 to the brushes of the motor 1 or to a speed controller therefor. Provided the time constants of the networks are adjusted appropriately the time response of the control system is equivalent to that of a D.C. tachogenerator with a steady state accuracy equivalent to that of an induction generator. The D.C. tachometer output may alternatively be applied directly to the differentiating network.
Patent GB-254262-A (GB)
Title: Improved manufacture of charcoal
IPC: C01B31/12
Filed: 1926-03-12
Abstract: 254,262. Urbain, E. June 25, 1925, [Convention date]. Addition to 249,138. Materials for making coke and other products. - charcoal is obtained by calcining a mixture of a substance of vegetable origin, tricalcium phosphosphate, and phosphoric acid, in quantity sufficient to convert the tricalcium phosphate to bicalcium phosphate. Fresh bones or bones deprived of their organic matter may be used as the tricalcium phosphate.
Patent GB-576232-A (GB)
Title: Light filters of coloured gelatin
IPC: G03C7/06
Filed: 1944-04-14
Abstract: Light filters of coloured gelatin are made by applying to the gelatin sheet or layer, from aqueous solution, the sulphuric ester of the leuco compound of a vat dyestuff and regenerating the vat dyestuff by treatment with an oxidising agent.  The gelatin may be in the form of a sheet or foil or may be a layer of gelatin on a smooth, continuous, non-fibrous substrate, e.g. a celluloid film or a glass plate. Alternatively, an aqueous solution of the gelatin may be so coloured and thereafter formed into a sheet or layer.  In examples: (1) a celluloid film, coated with a layer of gelatin, is immersed in an aqueous solution of the sodium salt of the disulphuric ester of 16 : 17-diethoxydihydrodibenzanthrone and thereafter in one containing sulphuric acid and sodium nitrite; and (2) an aqueous solution of the disulphuric ester of tetrabromodihydroindigo is added to an aqueous solution of gelatin, aqueous solutions of sulphuric acid and sodium nitrite are added successively and the whole is allowed to set, broken up, washed, melted, poured upon glass plates and allowed to set.  The film may be stripped off the plate.  Other sulphuric esters of leuco vat dyestuffs specified are those of dichlorodihydroisodibenzanthrone, tetrahydro-1.21.2.11-dianthraquinone-azine and dibromoanthanthrone.
Patent GB-308881-A (GB)
Title: Improvements in or relating to drop-side bedsteads or cots
IPC: A47D7/02
Filed: 1928-03-08
Abstract: 308,881. Wales, Ltd., and Adie, B. March 8, 1928. Dropside cots.-A dropside cot is provided with short tubes 9 or annular members so pivoted to longitudinal members 7 of the cot that one dropside can be moved into a position below the mattress and the other into. a position above the mattress. The, tubes are shown pivoted at 11 to screw shanks 10<a>. A rod 12 may be provided to guide one dropside by means of a loop 14.