baber/WOPTO huggingface dataset:
Patent GB-937876-A (GB)
Title: A machine for stitching fabrics
IPC: D04B23/10
Filed: 1960-06-27
Abstract: 937,876. Sewing machines. SDRUZENI PODNIKU TEXTILNIHO STROJIRENSTVI. June 27, 1960 [July 10, 1959], No. 22366/60. Class 112. In a sewing machine adapted to reinforce by stitching a web of fibrous material, the needle or needles is or are arranged to feed the work, and the needle or each needle is hooked and is provided with a movable guard for the hook. A bar 6 carries a bank of hooked needles 1, each of which is associated with a mechanically-operated latch tongue 4 carried by a bar 7. Bar 6 is connected by a link 13 to a bell-crank lever 17 oscillated by a cam 19 on a rotary shaft 20 for imparting aerial movement in a direction S 2  to the needles. Link 13 is connected by a link 15 to a crank 29 on an oscillating shaft 30 for imparting feed movement to the needles in the direction S 1 . Bar 7 is similarly connected by a link 21 to a bell-crank lever 25 oscillated by a cam 27 on shaft 20, and link 21 is connected by a link 24 to a crank 32 on shaft 30. A crank 42 on the latter is connected by a link 40 and adjustable connection 38, 39 to a bell-crank lever 36 oscillated by a cam 34 on a rotary shaft 35.
Patent GB-423873-A (GB)
Title: Improvements in and relating to harrows for sports grounds, lawns and the like
IPC: A01B1/24
Filed: 1933-08-11
Abstract: 423,873. Implements for working land. KOOL, A. A. D., 8, Leeuwerikenlaan, Aerdenhout, Holland. Aug. 11, 1933, No. 22468. [Class 6 (i)] A harrowing device for grass on sports grounds &c. comprises a board 1 provided on one side with a large number of closely spaced rigid spikes 3 driven into the board over substantially its entire surface, and with means, such as a draw-bar, for enabling it to be drawn over the grass. The board 1 of wood or the like has a number of metal strips 4 fixed thereto by screws &c. and connected to the draw-bar 5. A pair of metal strips 6 provide bearings 7 for an axle 8 which carries a pair of wheels 2. The device is wheeled into position on the wheels 2 and then reversed and dragged over the grass resting on the spikes 3.
Patent GB-760281-A (GB)
Title: Process and apparatus for the partial liquefaction of gas mixtures by means of pressure and low temperature cooling
IPC: F25J5/00
Filed: 1954-08-03
Abstract: 760,281. Cold separation of gas mixtures. GES. FUR LINDE'S EISMASCHINEN AKT-GES. Aug. 3, 1954 [Aug. 12, 1953], No. 22524/54. Class 8(2) Partial liquefaction of a compressed gas mixture, e.g. air, and remova1 of high boiling point impurities is effected by cooling the mixture at between four and twenty atmospheres pressure in one or other of change-over regenerators 2, 3 dividing the so cooled mixture at a point 16 into a major auxiliary portion and in a minor useful portion which latter is warmed by passage through coils 8, 9 within the regenerators 2, 3 then cooled in an exchanger portion 4a of a combined exchanger and liquefier 4a, 4b in counter current heat exchange with the auxiliary portion and partially liquefied in liquefier portion 4b traversed by the auxiliary portion after expansion in a turbine 5 and also by residual gas from a separator 12 to 'which the partially liquefied useful gas is fed after expansion at a valve 11. In a modification the warmed useful gas is compressed to about 200 atmospheres, precooled and expanded to liquefaction pressure before entering the combined heat-exchanger and liquefier; the combined residual gas and expanded auxiliary gas being led through said combined heat-exchanger and liquefier to the regenerator being derimed.
Patent GB-460925-A (GB)
Title: Improvements in or relating to indicating or recording instruments
IPC: G01D5/04
Filed: 1935-08-09
Abstract: 460,925. Indicating - apparatus ; pressure gauges. NEGRETTI, H. N., NEGRETTI, P. E., ZAMBRA, M. W., and 1BBOTT, H. W. Aug. 9, 1935, No. 22539. [Classes 106 (ii) and 106 (iv)] The movement of a sensitive indicating instrument is protected from effects which might arise due to distortion of the casing by providing, between the instrument movement and the casing, a flexible plate 1 which is attached to the casing at points 2 and to the instruments at points 6, the latter points being spaced relatively close to each other about the geometric centre of the area defined by the points 2. The invention is shown applied to a pressure gauge having an aneroid capsule 10 to which is adjustably fixed an arm 16 connected by a link 17 to a short crank on a shaft 18 carrying an arm 18<1> connected bv a link 19 and lever 25 to a toothed sector 20 actuating the pointer 22. The magnification can be varied by bending the lever 25.
Patent GB-895388-A (GB)
Title: Improvements in or relating to the manufacture of polyurethanes
Inventor: FRANCE HAROLD
IPC: C08G18/42
Filed: 1959-07-01
Abstract: In an improvement in or modification of the process of the parent Specification for preparing polyurethane elastomers, a polyester and a liquid polyisocyanate composition which contains a major molecular proportion of 4:41-diisocyanato-3-methyl diphenyl methane are reacted together in the proportions of between 0,7 and 1,2 moles of polyisocyanate to each mole of polyester.  Specified polyesters are those derived from succinic, adipic, suberic, azelaic, sebasic, iso-phthalic, phthalic, tere-phthalic or polymerized unsaturated monocarboxylic acids and ethylene glycol, 1:2-propylene glycol, tetramethylene glycol, diethylene glycol, pentamethylene glycol, hexamethylene glycol, decamethylene glycol, 2:2-dimethyl trimethylene glycol, hexanetriol, trimethylol propane, pentaerythritol, trimethylol ethane or glycerol.  Catalysts, e.g. dimethyl cyclo-hexylamine or iron acetyl acetonate may be present in the reaction mixture.  In the examples, a polyisocyanate composition containing 4:41-diisocyanate-3-methyl diphenyl methane is reacted with polyesters derived from: (1) and (2) diethylene glycol, pentaerythritol and adipic acid; (3), (5) and (6) diethylene glycol and adipic acid, the reaction being effected in the presence of trimethylol propane in (3) and (6) and a polyester derived from pentaerythritol, adipic acid and diethylene glycol in (6); (4) ethylene glycol, diethylene glycol. pentaerythritol and adipic acid and (7) diethylene glycol, pentaerythritol and polymerized tall oil fatty acids, the mixtures being reacted and cured in moulds.
Patent GB-745043-A (GB)
Title: Improvements in or relating to furnaces
Inventor: QUICKE KENNETH GEORGE
IPC: H05B6/02
Filed: 1951-09-28
Abstract: 745,043. High frequency electric heating. GARRINGTONS, Ltd. Dec. 23, 1952 [Sept. 28, 1951], No. 22649/51. Class 39(3). [Also in Group XII] Apparatus adapted to heat a number of similar articles in succession, such as round metal bars from which gas turbine or compressor blades are formed, comprises a rotary conveyer table 10 formed with receptacles for the bars 26, a superposed field coil structure 11 defining an annular heating zone, a supporting framework 12 accommodating a drive mechanism 13, and release means 14 arranged to free the bars for gravitational discharge at a discharge station 15. The field coil structure 11 comprises skatetype windings forming an inner and outer series of conductors 34 and 35 defining the annular beating zone and connected at the entrance end 36 by bridging conductors 37. The field structure is supported by bars 39 dependant from screwed rods 40 carried by pillars 41 forming part of the framework 12. The top member 16 of the table conveyer may be made of aluminium to shield the parts below it from the induction heating field. Where the articles are non-conductors of electricity the heating zone may comprise a high frequency electric field set up by electrodes. Specification 743,974 is referred to.
Patent GB-760644-A (GB)
Title: Improvements in method of preparing titanium dioxide
Inventor: SCHAUMANN HOLGER HEINRICH
IPC: C01G23/07
Filed: 1954-08-04
Abstract: In the production of titanium dioxide by vapour phase oxidation of the tetrachloride at 800 to 1,350 DEG C., 0.1 to 10 per cent of a subchloride of titanium is added to the tetrachloride as a nucleating agent.  The subchloride is preferably formed by passing a portion of the tetrachloride feed over a reducing agent such as a metal or a hydride, or by contact with hydrogen, and the resulting vaporous or finely divided solid lower chloride/tetrachloride mixture is reunited with the main tetrachloride stream.  The temperature of the lower chloride generator is preferably 136 to 400 DEG C.  The halide oxidation may be effected with air or oxygen, mixed, if desired, with inert gases and 0.05 to 5 per cent of water vapour, the oxygen preferably being present in excess.  Atmospheric, lower or higher pressures may be employed and the reactant retention time may be from 0.01 to 5 seconds.  The reaction products are preferably quickly cooled and subsequently the titanium dioxide may be calcined and ground.  According to a typical example, a titanium tetrachloride vapour stream, preheated in a nickel heat exchanger to 400 DEG C., was split and a minor portion contacted with pulverized titanium metal sponge to generate subchloride, after which this side stream rejoined the main stream and was fed to an elongated reactor. Air, preheated to 1100 DEG C. was injected through a separate inlet. The dioxide reaction product was calcined and ground in the usual manner. Another example relates to tetrachloride, preheated to 200 DEG C. and a diverted portion reacted with molten sodium to generate the lower chlorides.  In this case oxygen preheated to 850 DEG C. was employed as oxidant.  If metals are employed as reducing agents in the subchloride generator, their chlorides may be carried into the main reactor.  Thus tin or aluminium may be employed and their chlorides oxidized with the titanium tetrachloride.  Alternatively, aluminium chloride may be added in small amounts as in Specification 707,560. Other nucleating agents such as water vapour, nitrogen oxides or normally unstable metal subhalides may also be employed.
Patent GB-961629-A (GB)
Title: Apparatus for studying wear on materials in a hermetic enclosure
Inventor: ALFRED MARC
IPC: G01N3/56
Filed: 1962-06-13
Abstract: 961,629. Studying wear. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 13,1962 [June 21, 1961], No. 22707/62. Heading G1S. Apparatus for studying the wear of materials in an hermetic enclosure 1 comprises a cylindrical friction member 2 Integral with the enclosure 1 and rotated about its axis of revolution and a movable device 9-18 which holds the sample material 19 against the friction member 2. The device 9-18 is such that gravity holds it in a fixed position in space when the enclosure is revolved.
Patent GB-149674-A (GB)
Title: Improvements in and relating to golf score cards
IPC: A63B71/06
Filed: 1920-07-30
Abstract: 149,674. Brown, K. W. Aug. 1, 1919, [Convention date]. Drawings to Specification. Memorandum appliances.-A golf scoring-card is marked on the front with the names of the various clubs used, with a distinctive symbol opposite to each, and also bears graphic representations of eighteen " fair greens," numbered consecutively and provided with spaces for the insertion of the lengths of the holes, and the number of strokes taken for each. Each fair green has a representation of a tee at one end and of a putting-green at the other. The fair greens are spaced apart, the interspaces being regarded as representing the " rough." The card is also provided with designated spaces for the name of the player, the name of the course, the date, total " out," total " in," and total strokes. A nineteenth fair green may be provided for use in playing off a tie. In use, when a shot is played from the tee or through the green, the symbol of the particular club employed is marked on the corresponding fair green in a position approximating to that reached by the ball on the course. The number of " putts " taken is marked with a numeral on the putting green space. The back of the card has tabulated spaces for marking, for four players, the total number of strokes taken for each hole, and for the totals " out " and " in," and the combined total. It also bears a representation of a fair green, with instructions, showing the manner of marking. Similar directions may be placed on a cover containing the score cards, or on sheets assembled with them &c. The score cards are preferably sheets of paper assembled to form a booklet or pad, and, when used, may be removed and fastened together as by a loose-leaf binder &c.
Patent GB-1500061-A (GB)
Title: Method of marine reflection-type seismic exploration
IPC: G01V1/38
Filed: 1975-05-23
Abstract: 1500061 Seismic exploration TEXACO DEVELOPMENT CORP 23 May 1975 [19 Aug 1974] 22757/75 Heading G1G A method of marine reflection-type seismic exploration comprises generating seismic energy in the water, spacing at least two seismic detectors vertically apart in the water, and subtracting the concurrently-generated detector signals one from the other so as to cancel signal components due to horizontally travelling seismic noise while reinforcing signal components due to vertically travelling seismic energy. In the Fig. 1 embodiment vessel 12 tows two detector streamers 23, 24 with the detectors (or detector groups) A, B, &c. of one maintained vertically above the respective detectors (or groups) A, B, &c. of the other, the vertical separation being approximately half the seismic wavelength. A respective difference signal for each of detector pairs A, B, &c. is formed by circuitry on vessel 12, filtered to restore the wavelet shape (which is distorted by the subtraction process) then recorded. The recording is monitored visually.
Patent GB-990501-A (GB)
Title: Improvements in fountain pens
Inventor: DAY WILLIAM JOHN
IPC: B43K5/14
Filed: 1963-06-07
Abstract: 990,501. Fountain pens. E. S. PERRY Ltd. March 23, 1964 [June 7, 1963], No. 22761/63. Heading B6P. A fountain pen comprises a nib section 4, Figs. 1 and 2, having fixedly mounted therein an annular flange 6 into the aperture of which is inserted from the front a piercing member 7 outwardly flanged at its forward end, its flange being held against the flange 6 by a shoulder of the nib unit 5 when the latter is screwed into the section 4. The member 7 has a functional fit in the aperture. An ink cartridge 10 is placed in the bowl.1, which is provided with a recess 12 to accommodate a diametral bar 11 on the cartridge, whereby, when the barrel is screwed on to the section 4 the cartridge is rotated and a diaphragm 13 thereof is pierced by the member 7, which is formed with a piercing point 8 or with a plain oblique rear edge.
Patent GB-1304808-A (GB)
IPC: B29C44/34
Filed: 1971-04-19
Abstract: 1304808 Moulding hollow foamed articles MATTEL Inc 19 April 1971 [2 March 1970] 22794/71 Heading B5A A method of moulding a foamed plastics product comprises placing a moulding compound in a mould, heating the mould to foam the compound to fill the mould and to leave a cavity within the product, cooling the mould and directing a cooling gas into the cavity to set the cavity wall before removing the product. A doll body having an outer skin 21 and a foamed portion 23 is produced in a mould 11 having a closure cap 15; a cavity 25 remains after full expansion of the compound and after mould cooling. A tubular probe 29 is inserted into the cavity and a cooling gas, e.g. air, is supplied to the cavity via apertures 33. Such gas escapes from the cavity via passages formed between the probe and the body. A gas escape passage may be provided by a tube connected to and extending parallel to the probe.
Patent GB-692138-A (GB)
Title: Improvements in or relating to weighing apparatus more particularly for use with mixing and like machines
Inventor: BUTLER HERBERT GEORGE FREDERIC
IPC: G01G13/00
Filed: 1950-11-10
Abstract: 692,138. Weighing-apparatus. WINGET, Ltd. Nov. 10, 1950, No. 22868/52. Divided out of 692,092. Class 143 [Also in Group XXX] In a weighing-apparatus for measuring the weight of material in the loading skip of a concrete mixing machine, the skip is guided for movement along a rectilinear path during weighing. As shown in Fig. 1, the skip 4 is pivoted about trunnions 6, which may be either pins or anti-friction rollers, by a ram 10, the trunnions being so arranged in slots 7 that, at the top of the lifting movement; they drop in these slots and so jolt the skip to facilitate discharge of material. During weighing, the skip is guided by movement of the trunnions in the slots, and by the engagement of rollers 14 with faces 15. In a modified arrangement (Fig. 2), parallel weighing movement is effected by rollers 32 co-operating with slots 34 in sloping guides 35, and rollers 33 engaging faces 36. To allow for horizontal movement of the skip during weighing, rollers 44 are inserted between the hydraulic weighing device 41 and the base 43. Alternatively, rollers (not shown) may be incorporated in the head 39. A cable 45 effects luffing movement of the skip about rollers 32. Hydraulic weighing-apparatus. The weighing device is as described in Specification 692,092, and consists of a piston and cylinder which supports the skip and is connected with a weightcalibrated pressure gauge.
Patent GB-399639-A (GB)
Title: Improvements in or relating to processes of stabilizing fats and/or fatty oils and the products resulting therefrom
IPC: C11B5/00
Filed: 1932-08-16
Abstract: Fats and fatty oils, especially edible products such as lard, shortening, &c. are stabilized against oxidation by adding a small proportion (,001-,1 per cent or more) of guaiacum resin.  The resin may be added to the fat &c. while melted prior to packaging, and after refining, for example, with caustic alkali or by hydrogenation, has been completed, or it may be added to bakery mixtures containing fats &c.ALSO:Edible fats and fatty oils, such as lard, shortening, &c., are stabilized against oxidation by adding a small proportion (,001.,1 per cent or more) of guaiacum resin.  The resin may be added to the fat while melted prior to packaging, and after refining, for example with caustic alkali or by hydrogenation, has been completed, or may be added to bakery mixtures containing fats &c.ALSO:Edible fats and fatty oils, such as lard, shortening, &c. are stabilized against oxidation by adding a small proportion (,001-,1 per cent or more) of guaiacum resin.  The resin may be added to the fat while melted prior to packaging, and after refining, for example with caustic alkali or by hydrogenation, has been completed.
Patent GB-222862-A (GB)
Title: Improvements in or relating to valves for pneumatic tires
IPC: B60C29/06
Filed: 1924-09-29
Abstract: 222,862. Hughes, F. C. Oct. 4, 1923. [Convention date]. Dust caps for tyre valves.-A dust cap is provided with an inner member formed separately from the cap and adapted to plug the end of the casing. The inner member 13 has a cylindrical part 18 adapted to fit snugly within the end of the valve casing and a slightly tapered part adapted to be gripped by packing material 15 compressed around it when the cap is first applied to a casing. The packing may be of asbestos, fibre or cotton and may be moistened with oil or a solution of calcium chloride or dextrine. The cap itself has internal screw threads to engage the nipple on the casing which is provided with a lock-nut.
Patent GB-277174-A (GB)
Title: Improvements in or relating to motor vehicles
IPC: F16H29/02
Filed: 1926-09-17
Abstract: 277,174. Spencer (Melksham), Ltd., and Philip, J. Sept. 17, 1926. Transmission gear of invariable ratio; driving auxiliary parts; driving-gear for winding-apparatus. - In vehicles driven by ratchet and pawl mechanism the motion of the pawls is derived from eccentrics g on a rotating shaft h. Check pawls i are provided. Disengagement of the pawls is effected by means of a lever k. The method of driving may be applied to a winch mounted on the vehicle.
Patent GB-388041-A (GB)
Title: Improved process for the manufacture of crystallised hydrates of sodium metasilicate
IPC: C01B33/32
Filed: 1931-08-15
Abstract: A predetermined hydrate of sodium metasilicate is obtained by bringing a solution of the salt to supersaturation with respect to the desired hydrate at a temperature below the melting point of the desired hydrate, but above that of the next higher hydrate and after the formation of crystals separating the latter at a temperature substantially within such range.  Preferably crystallization is effected at a temperature as near as possible to the melting point of the desired hydrate.  In carrying out the process, an aqueous solution of the metasilicate is first obtained at a temperature above the melting point of the desired hydrate and its specific gravity so adjusted that there is sufficient water to form the desired hydrate but insufficient initially to form a higher hydrate and sufficient water also to ensure that no appreciable separation of the crystals will take place at temperatures lying between the melting points of the desired hydrate and the next lower hydrate; the solution is then cooled below the melting point of the desired hydrate and slowly brought to a condition of supersaturation with respect thereto, as by slow removal of heat, and crystallization allowed to take place, with or without the addition of seed crystals, the crystals being separated from the mother liquor at a temperature ensuring a low viscosity of the latter.  The temperature of the solution after cooling may be kept constant and supersaturation be brought about by slow evaporation, for instance at reduced pressure.  To prevent undesirable stiffening of the magma, the amount of seed crystals added is small, say 2\ba1/2\be parts per 1000 parts of the solution. Separation of the formed crystals is preferably effected at a temperature not considerably below that of the magma at the end of the crystallizing step.  After separation, as by centrifuging, the crystals are agitated during cooling or are dried by hot air or under reduced pressure.  In examples, the preparation of the pentahydrate from a solution of specific gravity 1,692 at its boiling temperature is effected by cooling to 65 DEG  C., seeding, and withdrawing heat from the liquor to maintain its temperation of the enneahydrate from a solution of specific gravity 1,42 at 100 DEG  C. is effected by cooling to 45 DEG  C., seeding if necessary, and reducing the temperature very gradually to 42 DEG  C.  During crystallization the number of crystal nuclei present is controlled and cooling of the solution may be replaced by vacuum evaporation.  The crystals obtained may be washed prior to cooling or drying.