baber/WOPTO huggingface dataset:
Patent GB-131951-A (GB)
IPC: B27D1/08
Filed: 1918-05-08
Abstract: 131,951. Valeri, R. F. S. Feb. 4, 1918, [Convention date]. Shaping or forming.-Laminated propellers are constructed from cut lengths of veneers such as 1, 2, 3, 4, Figs. 4-7, with the grain arranged as shown. These are glued and superposed with a full length main ply arranged in the centre of thickness of the blade. Holes 5 formed in these veneers are threaded over tapered pins 18 extending from the bottom part 7 to the top part 8 of the mould 12, which is steam-heated to the temperature of 50‹ C. The parts 7, 8 are shaped to the contour of the finished propeller. When the laminµ are in place in the heated mould, mechanical pressure is applied to the upper block at the points 9, 10, 11. The propeller is allowed to cool slowly for 24 hours before removal from the mould.
Patent GB-739597-A (GB)
Title: Steroid ketals
IPC: C07J21/00
Filed: 1953-03-20
Abstract: The invention comprises 11b -hydroxypro-gesterone - 3 : 20 - diketals of the formula <FORM:0739597/IV (b)/1> wherein R is hydrogen or an alkyl radical containing from one to six carbon atoms, inclusive, and n is one or two, provided that the total number of carbon atoms in the polymethylenedioxy residue does not exceed 8, and also a process for their preparation which comprises treating the corresponding 11-keto-3 : 20-diketal with a reducing agent, classified as a mixed metal hydride, or hydrogen in the presence of a hydrogenation catalyst. The reaction is conducted in an inert solvent, e.g. ether, benzene, tetrahydrofuran and petroleum ether, and when using a mixed hydride, e.g. lithium aluminium hydride, lithium borohydride or sodium borohydride, the reaction product is hydrolysed with water. In examples (1) 11b -hydroxyprogesterone 3 : 20 - ethylene glycol diketal is prepared from the corresponding 11-keto compound by reduction with lithium aluminium hydride in ether or benzene.  Other examples describe the formation of the corresponding 11b  - hydroxy - 3 : 20 - diketals in which the polymethylenedioxy residue is derived from propane - 1 : 2 or 1 : 3 - diol; butane - 1 : 3-diol and octane-1 : 2-diol.  (2) 11b -hydroxyprogesterone-3 : 20-ethylene glycol diketal is also prepared using sodium borohydride in aqueous isopropanol, and lithium borohydride in aqueous ethanol as the reducing agents.  A further list of other 11b -hydroxyprogesterone-3 : 20-diketals is provided.  Specification 734,805 is referred to.
Patent GB-1099285-A (GB)
Title: A method and apparatus for treating highly viscous substances
IPC: B02C4/04
Filed: 1965-02-24
Abstract: 1,099,285. Compression mixers. ONDERZOEKINGSINSTITUUT RESEARCH N.V. Feb. 24, 1965 [March 11, 1964], No. 8011/65. Addition to 1,094,375. Heading B1C. The method and apparatus of the Parent Specification are modified by the provision of a comb-like element the teeth 8 of which extend into the nip between the rollers from the side at which the treated material emerges.
Patent GB-1377262-A (GB)
Title: Communication systems
IPC: H01Q13/08
Filed: 1972-02-22
Abstract: 1377262 Radio signalling; generating oscillations SPERRY RAND CORP 22 Feb 1972 [12 March 1971] 8048/72 Headings H4L and H3X - A radio receiver of the type disclosed in Specification 1,377,263 is used with a radio transmitter of the type disclosed in Specification 1,293,737 to produce an output pulse of substantially greater duration than the received pulse which is of very short duration, e.g. less than one nanosecond. The transmitter described differs slightly from that referred to above and includes the balanced horn antenna 82, 82a forming part of and terminating a balanced strip transmission line 81, 81a of the prior Specification, bridged by a transistor switch 92 controlled by a multivibrator 94 through a capacitor 93. Resistors 91, 91a each have a resistance equal to half the characteristic impedance of the line. When the transistor 92 is non-conducting the line is charged from a source 90 and when the transistor conducts a narrow pulse is radiated. The multivibrator 94 may be modulated to produce pulse rate or pulse interval modulation. Similar equipment may be included in a repeater station.
Patent GB-615649-A (GB)
Title: Improvements in or relating to machines for grinding and polishing non-spherical optical surfaces
IPC: B24B13/04
Filed: 1946-03-15
Abstract: 615,649. Grinding and polishing. HILGER Ltd., A., PERRY, J. W., and WEINSTEIN, W. March 15, 1946, No. 8193. [Class 60] A machine for grinding and polishing predetermined forms of non-spherical optical surfaces by a reciprocating curvilinear travel of a tool over the rotating surface comprises a tool reciprocable under the guidance of linkage comprising an oscillatory lever linked to a tool guiding member by means of a connecting link of adjustable length, and cam surfaces, shaped according to the desired form of the optical surface, upon which bear respectively the tool guiding member and the link or a roller or other element carried thereby, whereby the tool is orientated and positioned, i.e., has a unique position for each position of the oscillatory lever. A tool 3, Fig. 1, rotating about an axis 4 is rigidly carried by a tool guiding member 9 pivoted at one end P to a link 6 adjustably pivoted at L to a lever 5 oscillatable about a fixed point O. The other end of the link 9 bears on a cam surface 10 and an extension 7 of the link 6 bears on a cam surface 8 so that as the lever 5 is oscillated the tool is guided over the face of a lens 1 rotating about an axis 2. Various modifications are described for grinding concave lenses or in which the arrangement of the pivots L P is reversed or the end of the link extension 7 is caused to move along the required path by means of a roller held in contact with a cam surface. The Provisional Specification includes a modifica- 'tion in which P coincides with L and the cam 8 is eliminated. In the apparatus shown in Fig. 8 the cam 10 and contact edge 9 are replaced by the equivalent combination of a modified cam form 11 and a displaced contact edge 9<SP>1</SP>. The oscillation of the linkage mechanism may extend on both sides of the axis 2. In limiting cases a cam may degenerate into a straight line or even a pivot point. Instead of a rotating spherical tool a nearly pointed rotatable or non-rotatable tool may be used.
Patent GB-609582-A (GB)
Title: Improvements in or relating to the shot peening of metallic articles
IPC: B24C1/10
Filed: 1946-03-18
Abstract: 609,582. Shot-peening metallic articles. FORD MOTOR CO., Ltd. March 18, 1946, No. 8291. Convention date, April 18, 1945. [Class 60] The invention relates to the peening by a blast of metallic shot of metallic articles such as machine components, e.g. ring gears and pinions for automotive axles, quills, shafts, thrust washers, connecting rods, &c. for the purpose of improving their physical characteristics, e.g. fatigue life. A method of shotpeening metallic articles comprises subjecting the surface of the article to the action of a high velocity stream of metal shot and utilizing said stream to effect rotation of said article while under said treatment so as to present successive portions of the surface of the article to said stream. A method of shot-peening bevel gears and like objects having the principal surfaces to be treated disposed obliquely to the axis of rotation of the object comprises the steps of passing said object underneath a high velocity stream of shot particles, rotatably supporting said object so that said oblique surfaces are successively substantially normal to said stream of treating particles, and rotating said object while passing it through said stream of treating particles. The shaft 20, Fig. 2, of a spiral pinion 21 is secured, e.g. by a set-screw in a tube 22, which masks the sleeve, and has a trunnion bearing loosely received in an aperture in the right end 16 of a fixture 14; a shield 23 protects the bearing. The other end 24 of the pinion shaft 20 is rotatably seated in an open notch 25 in the left end 16 of the fixture 14. As shown, the pinion axis is inclined to the horizontal so that the upper pinion surface is substantially horizontal. The tube 22 carries paddles 18 screened on one side by a shield 19. The fixture is placed on a conveyer which carries it under a hood enclosing a shot projecting device. In a modification, Fig. 4, for treating the central portion only of a quill 36, the ends are masked by sleeves 38, 41; the quill and sleeves are supported in notches 32 in walls 31 of the fixture 29 and adjusting screws 34 are provided to accommodate work of different lengths. The sleeve 41 carries paddles 43 screened on one side by a shield 35. An auxiliary air jet may be provided within the hood containing the shot projecting device directed along the path traversed by the fixture and localized on the paddle wheel.
Patent GB-435397-A (GB)
Title: Improvements in or relating to electrical power measuring means for prime movers
IPC: G01R21/06
Filed: 1934-03-16
Abstract: 435,397. Power meters. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and DAVIES, E. C., c/o General Electric Co., Witton, Birmingham. March 16, 1934, Nos. 8346 and 15668. [Class 37] The output of a prime mover is measured by an electrical instrument responsive to the output of a constant voltage generator driven by the engine, the instrument having at least one coil the current through which depends on the setting of the field regulator. this coil being energized from a circuit of the generator. In the form shown, reduction of the excitation of the field winding 2 reduces the current in the differential coil 16 on the wattmeter 4 which also has a voltage coil 15 and a coil 5 carrying the load current of the generator 1. The position of the slider 8 on the rheostat 7 varies with that of the slider 9 on the main field resistance 10. Instead of the coil 16 being connected as shown, it may carry the field current or a current proportional thereto, whilst in a further modification it is replaced by a cumulative coil carrying a current inversely proportional to that of the generator field winding. In place of a wattmeter, an ammeter may be used, its current being party dependent on the exciting current, for example by passing the field current through a differential coil on the instrument.
Patent GB-308086-A (GB)
Title: Improvements in or relating to hand tools for punching or perforating letters, papers, or the like for filing
IPC: B26F1/36
Filed: 1928-03-19
Abstract: 308,086. Stolzenberg Patent File Co., Ltd., and Kayser, B. F. T. March 19, 1928. Reciprocating-punch machines.-In a machine for punching holes in documents for filing purposes punches 14 are reciprocated from a lever 15. The base plate 10 is formed with a recess 23 for containing the punchings. An extension 24 of the recess is closed by a dished plate 25 pivoted on an inclined pin. An edge gauge is located by pins engaging staggered holes.
Patent GB-756597-A (GB)
Title: Improvements in or relating to the preparation of polyalkylene terephthalates
IPC: C08G63/60
Filed: 1954-03-23
Abstract: A viscosity stabilized polyalkylene terephthalate is made by reacting a glycol of formula HO(CH2)nOH where n is 2 to 10 with terephthalic acid or an ester-forming derivative thereof, and incorporating with the reactants prior to completion of the esterification, an alkyl beta-naphthoate or 2-carboalkoxyl-3-hydroxy naphthalene wherein the alkyl and alkoxy groups contain 1-4 carbon atoms, in such amount that the unsubstituted naphthoyl radical of such alkyl naphthoate or hydroxy naphthalene constitutes 1.34 to 0.93 per cent of the molecular weight of the polyalkylene terephthalate produced, excluding the weight of the naphthoyl radicals.  The polyesters may be used for preparing filaments or fibres or for preparing biaxially oriented films of 0.003-0.008 inches thick for use as photographic film bases as described in Specification 718,422. Specified esterification catalysts are litharge, zinc salicylate, zinc acetate; lithium, sodium, potassium, calcium, beryllium, magnesium, zinc, cadmium, aluminium, chromium, molybdenum, manganese, iron, cobalt, nickel, copper, silver, mercury, tin, lead, bismuth, antimony, platinum, palladium; the alcoholates of the alkali metals, the alkaline metals or magnesium; the carbonates or borates of the alkali metals, and magnesium oxide. Examples are given.
Patent GB-103937-A (GB)
Title: Apparatus for Indicating the Amount of Oil in the Oil Fuel Tanks of Submarines and for like purposes.
IPC: B63G8/08
Filed: 1916-06-16
Abstract: 103,937. Scotts' Shipbuilding & Engineering Co., and Stobie, P. June 16, 1916. Indicators adapted to remove a column of liquid-from the liquid vessel.-To measure the quantity of oil in a tank into which water is admitted to replace oil as it is withdrawn, for example in the oil tank of a submarine, an openended tube is inserted in the tank so that the liquid enters the tube to the same level as in the tank, and means are provided for transferring the liquid from the tube to a measuring-vessel. Oil in the pipe d, Fig. 1, depending from the top of the tank a<1> is forced by the pressure in the tank through a pipe h<1> into a measuring-vessel k. The oil enters the vessel through the bottom of a funnel m<2>, Fig. 4, so arranged that the water in the pipe h' just fills the measuring-vessel up to the level of the funnel, the oil entering the vessel upon the top of the water. When the oil reaches the top of the vessel, it overflows through a passage o<4> into a gauge glass o, by which the dividing line between the oil and the water, and thus the quantity of oil in the measuring-vessel, is indicated. The measuring-vessel is emptied and cleaned by turning a hollow plug at the top of the tube d so as to close the tube and place a pipe i opening into the sea in communication with the pipe h<1>. The oil from the measuring-vessel is delivered into a funnel r beneath the outlet pipe p, and is forced by a pump r<3> back into the tank. The vessel is drained through the pipe s'. A portable measuring-vessel comprises an inner open-ended tube w, Fig. 8, a concentric metal cylinder x, and an outer glass cylinder y. The liquid is run into a funnel w<2> at the top of the tube, and, as described above, the oil floats upon the water in the cylinder x until it reaches the apertures x<1>, whereupon it overflows into the annular space, corresponding to the gauge glass, between the cylinders x, y.
Patent GB-217670-A (GB)
Title: Improvements in and connected with electric welding machines
IPC: B23K11/10
Filed: 1923-03-26
Abstract: 217,670. British Insulated & Helsby Cables, Ltd., Bullock, S. C., and Wilson, L. B. March 26, 1923. Transformers.-The current supplied to the roller electrodes 7 of a welding machine by the secondary 6 of a transformer 4 is synchronously reduced below welding strength whilst the electrodes are rotated by means of a choking coil 11 in the circuit of the primary 5. The electrodes are rotated through the medium of a pawl lever 15. rachet wheel 16, and belt 17, the lever being connected by links 14, 13, 12<a> to the core 12 so that the latter is pushed further into the core when the electrodes are rotated.
Patent GB-582743-A (GB)
Title: Improvements in or relating to fastening devices
IPC: F16B5/02
Filed: 1944-05-05
Abstract: 582,743. Bolted fasteners. ELASTIC STOP NUT CORPORATION OF AMERICA. May 5, 1944, No. 8581. Convention date, May 6, 1943. [Classes 44 and 89 (i)] In bolting together thin sheet-metal parts a carrier member 10 is secured as by rivets 16 to one part 12 and is formed as a two-diameter housing 18a, 18b with connecting flange 22 formed into a series of slotted cam surfaces 28 through which pass lugs 44 on a bearer member 30 having legs 45 that, in the closest position of the bearer member to the sheet 12 bear against the sheet and release the lugs 44. The bearer is apertured to pass the nut and is further cut away at 34 leaving projections 36 with rigid stops 38 at one end and cam projections 40 at the other. The screw 50 is received in a countersink in the other sheet and carries a nut 54 preferably of the type having an inserted fibre lock washer 56. On insertion the screw is turned until projections 58 on the nut pass through the recesses 34 and over the projections 40 till arrested by the stops 38. The bearer 30 now turns, the lugs 44 travelling down the cam surfaces until arrested by the shoulders at the ends thereof. The legs 45 now contact the sheet 12 and further rotation of the screw tightens the nut and effects clamping. On releasing, the bearer turns to the other end of the movement permitted by the lugs 44 after which further slackening backs off the nut sufficiently for the projections 58 to clear the cam projections 40. Adequate clearance is thus ensured to permit reassembly notwithstanding possible warping or presence of intervening dirt &c. An indicator member rests on the nut at 66 and is flanged to receive a spring confined by the top of the housing. Should the projections on the nut, on reassembly, fail to pass over the projections 40 on to the projections 36, the spring pressure forces the nut back through the opening causing the screw to project. In a modification, the axial height of the device is reduced but the nut must be turned by hand so that the projections are in the correct position to pass through the bearing member before assembly is attempted. The anchor member 10a is formed as a flat flange 14a, Figs. 12 and 13, and from it cam surfaces 28a are stamped surrounding the central aperture. Lugs 78 are also formed which are bent over to retain the bearer member 80 in place. The nut projections 58 pass through recesses 34a in the bearer and over cam projections 40a to stops 38a. The bearer is stamped with cam surfaces corresponding to the surfaces 28a and relative movement between the anchor and bearer members is limited in one direction by contact of the shoulders 82, 76 and in the other direction by contact of the shoulders 82 with the legs 78. A number of the members 10 or 10a may be formed as a continuous strip with narrow connecting portions enabling the strip to be bent to suit variously curved work.
Patent GB-586316-A (GB)
Title: Time-controlled radio programme preselector
IPC: G04C23/00
Filed: 1944-05-06
Abstract: 586,316. Wireless receiving sets. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 6, 1944, No. 8610. Convention date, May 6,1943. [Class 40 (v)] The invention comprises a device for predetermining whether a radio receiver is on or off, and which of two push-button tuners shall be operative, for each quarter-hour interval throughout the major part of the day. The mechanism is mounted on a circular frame 22, Fig. 2, secured to the rear of the front panel 10 of the receiver, through which is seen the face 15 of an electric clock. A cam 83 is rotated once an hour by the clock motor and has four lobes each terminated by an axial edge 87. Thus, in each quarter of an hour cam 83 engages pin 62 to turn lever 55 clockwise about pivot 56 until edge 87 is reached. Lever 55 then suddenly returns due to spring 74 to effect actuation of the selected push-button 26 by means of oppositely directed pawls 66, 67 at the upper end of lever 55. The selection is determined by the amount of return travel of lever 55. This is determined by a lever 48 coupled by pin 50 to a member 52 which is coupled by pin 54 to lever 55. The upper end of lever 48 coacts with recesses 31, 32, 33 on a setting lever 17, according to the three angular positions of lever 17. Recesses 31, 32 allow full and partial return of lever 55 to select appropriate push-buttons. Recess 33 allows no return, and in this position a lug on lever 55 engages a pin 95<1> to open the receiver supply circuit at 95. Lever 48 is carried on a bracket 47 which is rotated by the clock once per day, and the upper end of lever 48' engages a succession of setting levers 17 arranged at quarterhour intervals round the clock face. According to the angular setting of each lever 17 so is the receiver tuned during each quarter-hour interval. A pair of locking levers (not shown) coact with slots in disc 88 to hold the mechanism in its set position during the quarter-hour intervals while lever 48 is passing from one setting lever to the next. The time tuning may be put out of operation by turning a knob 18 which causes a bar 76 to move upwards to turn actuating lever 55 in a clockwise direction to maintain the parts 66, 67 free of the pushbuttons. At the same time a switch (not shown) is actuated to close a shunt circuit round switch 95. Fig. 10 shows a modification suitable for selecting more than two stations. Here, as before, the released position of lever 55 is determined by stops on the setting levers (not shown) and this determines the position of a rack 911 urged to the left by spring 96. The rack is locked in each adjusted position by the interaction of lugs 93<1> with slots in rotatable disc 88. In its left or off position, rack 91<1> opens the supply circuit at 95. In its four other positions it sets shaft 103 and switches 104, 105 to select appropriate tuning elements. U.S.A. Specification 2,209,959 is referred to.
Patent GB-733623-A (GB)
Title: Improvements in or relating to edge-moulding
IPC: B29C65/78
Filed: 1952-04-04
Abstract: 733,623. Making belts from plastic material. RUBBER IMPROVEMENT, Ltd., and LEWIS, J. July 1, 1953 [April 4, 1952], No. 8644/52. Class 87 (2). In a method for the edge moulding of plastic belts and the like, (made e.g. of an elastomer type of vinyl, vinylidene, vinyl formal, vinylbutyral, vinyl alcohol, ethylene, amide or sulphide polymer) the belt edge is covered with a similar or different mouldable plastic material, comprising an extruded section, a sheet material, or a paste, which is spotwelded at points along the edge or is held in position by material such as adhesive plastic film, thin aluminium, or by a metal former, after which the prepared edges are introduced into open moulds 8 hinged at 10, having sliding edges 11 allowing for the edge thickness, and mounted on frame members 1A, 1B. Member IB slides on shafts 2 fixed to member 1A, its distance from member. 1A being adjusted by bolts 7 engaging nuts on member 1B and driven by sprockets 4 and 6. In operation, the moulds are closed, pressure is applied, e.g. by a hand-screw, to the sides and a heating fluid circulated through the apertures 9. When finished the moulds are cooled by introducing cooling fluid while still under pressure or, where plastic film, thin aluminium, or a metal former is used, the belt section may be removed while still hot.
Patent GB-1378630-A (GB)
Title: Biocompatible articles including polymeric membeanes having per meability to gases and uses thereof
IPC: A61M60/196
Filed: 1973-02-22
Abstract: 1378630 Olefin-sulphur dioxide copolymers OWENS-ILLINOIS Inc 22 Feb 1973 [22 Feb 1972 11 Aug 1972 2 Feb 1973] 8671/73 Heading C3P [Also in Division A5] Permselective biocompatible membranes may be made of bulk polymerized C 8-18  α-olefin/ sulphur dioxide copolymers. Preferred copolymers are of C 16  α-olefins. The membranes may be used for heart valves, surgical implants, artificial arteries and veins, soft contact lenses, drug delivery systems, surgical tapes and wound dressings.