baber/WOPTO huggingface dataset:
Patent GB-271154-A (GB)
Title: Improvements in or relating to apparatus for cleaning kinematograph films
IPC: G03D15/00
Filed: 1926-02-18
Abstract: 271,154. Goldston, A. Feb. 18, 1926. Cleaning.- Apparatus for cleaning kinematograph films which is designed for use with ordinary film rewinding mechanism, comprises a pair of co-acting cleaning pads, between which the film is drawn, and which are floatably mounted between the reels of the rewinding mechanism so that they may rise or fall, or rock about an axis or axes parallel to the axes of the reels, in order to adjust themselves to the varying height and inclination of the portion of film stretching between the reels. In the form shown the pads e, e<1> are of elongate form, and carry trunnions e<4>, e<5> engaging guide slots in standards f pivoted at f<2> to heel pieces f<1> which are secured to a base g so mounted on the base a of the rewinding mechanism that it may be removed therefrom, or swung aside thereon, when the film is to be rewound without cleaning. The film d, which passes from the reel c, and between the pads e, e<1> to the reel c<1>, actually supports the pads, which may. rise or fall in the guide slots, or rock about the axis f<2> or the trunnions e<4>, e<5> to accommodate themselves to the position and inclination of the film passing between the reels, which vary as the amounts of film on each reel vary. The pads may be drawn together as by endless crossed flexible bands e<6> passed round the trunnions e<4>, e<5>. The pads may comprise rigid cores wrapped bobbinwise with long lengths of lint &c., which may be removed in short lengths as it becomes soiled. Slip-on coverings may also be used provided with means for holding them in position.
Patent GB-510196-A (GB)
Title: Improved apparatus for the thermal production of magnesium
IPC: C22B26/22
Filed: 1938-02-15
Abstract: 510,196. Alloys ; condensers. MAGNESIUM ELEKTRON, Ltd. Feb. 15, 1938, No. 4753. Convention date, March 27, 1937. [Class 82 (i)] [Also in Group XII] A condenser F forming part of a rotary furnace for use in the production of magnesium is enclosed within a casing K having valves L for the admission of air while metal is being condensed, and is surrounded by a heating- coil J by which the solidified magnesium may be remelted in an atmosphere of hydrogen for discharge through the taphole G. The condenser may be made of an iron alloy containing between 5 and 30 per cent., and preferably between 6 and 8 per cent. of chromium, together with, if desired, .5-1 per cent. of silicon and/or .7-2 per cent. of aluminium.
Patent GB-729112-A (GB)
Title: Improvements in electrical phase-shifting or frequency changing arrangements
Inventor: LEYTON ERIC MCPHAIL
IPC: H04N3/36
Filed: 1950-02-24
Abstract: 729,112. Phase displacing and frequency changing. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 26, 1961 [Feb. 24, 1950], No. 4757/50. Class 38 (2). An electrical phase-shifting and frequencychanging arrangement, e.g. for a television film scanner, comprises a polyphase transformer or a plurality of single-phase transformers, windings 4 ... 6 of which are tapped at a number of points a . . c whereby selection thereof enables a shift of the transformer output voltage to be obtained relatively to the input voltage, a further polyphase transformer or plurality of single transformers having windings 24 ... 26 tapped similarly to the first mentioned transformer(s), and means which simultaneously and sequentially select in opposite directions of phase rotation the respective tapping points of the transformers and which interconnect the selected tapping points whereby to shift the phase of the output voltage of the arrangement relatively to that of the input voltage thereof but such that the voltage amplitude variations which occur in the tapping point selections during phase shift are substantially eliminated. The means comprises two commutators 14, 22 whose segments 13, 23 are connected to the respective winding tapping points a .. c and a<SP>1</SP> ... c<SP>1</SP> and whose brushes 15 ... 17 and 19 ... 21, rotated by a common shaft 18, are suitably electrically interconnected and positioned to select the tappings in the correct sequence, the directions of rotation and sequence being indicated by the arrows. The primary windings 1 ... 3 alternatively may be star connected. A partial rotation of shaft 18 yields the phase shift but continuous rotation thereof yields a frequency change; a device which rotates said shaft may be provided with speed stabilizing means to maintain a desired output frequency. The respective brushes or segments may be angularly offset with respect to each other by half a segment. The Provisional Specification describes arrangements wherein only a single polyphase or plurality of single phase transformers is/are used.
Patent GB-121878-A (GB)
Title: Improvements in and relating to Vacuum Tubes.
Filed: 1918-03-20
Abstract: 121,878. British Thomson - Houston Co., (General Electric Co.). March 20. 1918. R÷ntgen - ray tubes.-An anode, particularly a target for a highpcwer tube, comprises a body 2 of metal such as invar having a low or negligible coefficient of thermal expansion. An' alloy of 63 parts of iron, 36 of nickel, and 1/2 part each of carbon and manganese, or an alloy of 49 parts of iron and 51 parts of nickel, may be used. The body 2 may be faced with tungsten, tantalum, platinum, or other refractory metal 1, attached by electric welding, or by a film of copper 3 fused in hydrogen or a vacuum. A water-cooling and supporting tube 4 may be secured to the body 2 by silver solder.
Patent GB-558654-A (GB)
Title: Improvements in and relating to the production of modified phenol-aldehyde resinous condensates and compositions comprising said condensates
IPC: C08G8/28
Filed: 1942-04-17
Abstract: 558,654. Phenol-aldehyde resins. BRITISH THOMSON-HOUSTON CO., Ltd. April 15, 1942, No. 4992. Convention date, April 17, 1941. [Class 2 (iii)] Modified phenol-aldehyde resins suitable for use as varnishes or in admixture with fillers, lubricant, dyes &c. as moulding compositions are obtained by reacting Vinsol resins, i.e. pitchy residues obtained in the extraction of pine wood with solvent and then distilling off the solvent and rosin, with phenol and formaldehyde under acid conditions and with a mole ratio of aldehyde to phenol less than 1:1 adding sufficient formaldehyde to increase the ratio to greater than 1:1 and continuing the reaction under alkaline conditions. A dispersion agent e.g. natural gum, acacia, ghatti, or tragacanth is then added and the mixture neutralized with the addition of ammonia or a secondary amine to prevent loss of excess aldehyde. The liquid resin obtained is then mixed with fibrous fillers (wood flour) lubricant (zinc stearate) dyes (nigrosine) dried and processed on differential rolls to give a moulding powder which cures at 175-185‹C. under 2,000 lb. pressure. Specification 489,747 is referred to.
Patent GB-1410126-A (GB)
Title: Formation of piles in the ground
IPC: E02D5/54
Filed: 1973-02-01
Abstract: 1410126 Forming concrete piles FUNDEX PVBA 1 Feb 1973 [1 Feb 1972] 5018/73 Heading E1H A pile is formed by driving into the ground an assembly comprising a tube 2 and a stem 3 having a pointed tip 4, the stem being guided within the tube, whereby after the assembly has been driven to the required depth, the tube is held and the stem driven in further by the punch 8, 8' of a pile driver 7. The space within the tube is filled with concrete grout either before, during, or after the driving operations. During the second driving operation the punch 8 forces grout out of the tube 2 along with the stem 3, additional grout being injected through a pipe 14, 12 and nozzle 11 into the gap formed behind the tip 4. After removal of the punch 8, 8' the tube is re-filled with grout. In the final position dogs 6 fixed to the lower end of the tube abut dogs 5 fixed to the upper end of the stem 3. If the pile is to be loaded compressively the dogs 5 are arranged to pass through gaps between the dogs 6, whereafter the stem is rotated to bring the dogs into longitudinal alignment. A reinforcing structure may be provided. The tube 2 is preferably hexagonal and the stem 3 of I-section.
Patent GB-568599-A (GB)
Title: Improvements in or relating to coated fabrics suitable for use in the manufacture ofaircraft
IPC: D06N3/00
Filed: 1943-03-29
Abstract: Pliable coated fabrics having a potential shrinkage and suitable for covering parts of aircraft, drums and cinema screens are made by wetting the fabric with water, allowing it to shrink while wet, coating it with a solution of cellulose derivative and a small proportion of plasticiser in a volatile, water-immiscible solvent having an evaporation rate greater than that of water, and stretching the coated fabric to its original dry width during or after drying. The stretching minutely fractures the dried coating.  In use the coated fabric is fitted or stretched over an aircraft part &c. and coated by brushing or spraying with a solution of a cellulose derivative in an organic solvent which dissolves the minutely fractured coating and shrinks the fabric. The primary coating composition may comprise cellulose nitrate, castor oil, dibutyl phthalate, methyl ethyl ketone, and, if desired, a pigment, or cellulose acetobutyrate or acetopropionate, triphenyl phosphate and methyl ethyl ketones and the subsequent coatings may comprise cellulose nitrate, dibutyl phthalate, castor oil, pigment, ethyl and butyl alcohol, ethyl and butyl acetate, and petroleum naphtha.  The dried coated fabric may be calendered between heated polished rolls. The fabric bearing the primary, discontinuous coating may also be used in tape form to cover seams or for reinforcing or finishing purposes in aircraft, being applied over a brushed-on coating of dope.
Patent GB-257173-A (GB)
Title: Improvements in diaphragms for the reception and conversion of sound waves
IPC: G10K13/00
Filed: 1926-02-22
Abstract: 257,173. Walker, W. L. Feb. 22, 1926. Subaqueous audible signals; detecting subaqueous sounds.-Comprises a sonant receiving and transmitting device adapted to be inserted in an opening in the skin of a ship including a diaphragm forming a continuous portion of the ship's skin and made of hard resilient non-corrodible insulating material together with sound transmitting means operated by the diaphragm. A housing 2 is fitted to an opening in the skin 1 of the ship and receives a flanged ring 4 preferably formed in one with the diaphragm 3 of hard rubber compounds containing cellulose such as cellulose acetate. The ring 4 is screwed internally to receive a ring 5. The diaphragm 6 supporting the microphone 8 is of smaller diameter than the diaphragm 3 and is secured at the rim between rubber gaskets 10, 11, and clamped in place by a gasket 12 and the ring 5. A central rubber pad 13 is fitted and this may be formed in one with the gasket 10, being connected thereto by spokes. By varying the thickness and dimensions of the diaphragm 3 and the pad and gaskets and the pressure of the ring 5, the diaphragm may be made resonant to desired vibrations and remain unaffected by undesired vibrations. The pad 13 when formed separately may be centred on a boss on the diaphragm. In a modification shown in Fig. 5 for cases where it is desirable to insert and remove the outside, the ring 21 is screw-threaded both internally and externally and the diaphragm 22 has a boss for engaging the threaded rod 24 of the microphone 25.
Patent GB-571843-A (GB)
Title: An improvement in or relating to capstan or turret lathes
IPC: B23Q16/00
Filed: 1944-03-20
Abstract: 571,843. Turning. WOODHOUSE & MITCHELL, Ltd., and WALKER, D. March 20, 1944, No. 5103. [Class 83 (iii)] A stop-bar for a capstan or turret lathe is provided with integral projections between which, or by means of which, stop members, which may carry adjustable abutments, are located and whereby said stop members are anchored against any axial movement along the bar. In the form shown, the stop-bar a has integral annular projections a<1> between which stop members b are screwed to the bar by screws e, all axial thrust being taken by the projections. The inner ends of the members or blocks b are curved to fit the periphery of the bar and are of such a width that four blocks can be located between two collars. Each block carries an adjustable stop in the form of a bolt c with lock-nuts d. The continuous annular projection may be broken to form a series of radial projections. In a modified form, the bar is provided with ribs or projections adapted to engage in similar recesses formed in the inner ends of the stop members.
Patent GB-1515772-A (GB)
Title: Method and device for forming a bipolar signal of duty cycle of one half
IPC: H04L25/49
Filed: 1976-02-10
Abstract: 1515772 Data transmission; forming bipolar signals SOC ANON DE TELECOMMUNICATIONS 10 Feb 1976 [14 Feb 1975] 5149/76 Heading H4P In a method of forming a bipolar signal B<SP>1</SP> with a duty cycle of one half from a binary signal S constituted by binary elements "0" and "1" of width T, two trains of pulses S<SP>1</SP> 1  and S<SP>1</SP> 2  of width T are derived from the signal S the signal S<SP>1</SP> 1  being constituted by the odd-numbered binary "1"s in the signal S, e.g. the pulses numbered 1, 3 and 5 in Fig. 5, and signal S<SP>1</SP> 2  by the even-numbered "1"s, e.g. the pulses numbered 2 and 4; the signals S', and S<SP>1</SP> 2  are then combined through the agency of clock pulses H of width T/2 to form the required signal B'. A suitable circuit arrangement for carrying out the method is described with reference to Fig. 3 in which the signals S<SP>1</SP> 1  and S<SP>1</SP> 2  are produced by AND gates P<SP>1</SP> 1 . P<SP>1</SP> 2  which receive on their inputs the signal S together with, respectively, the Q and Q outputs of a JK flip flop 2 controlled by a clock signal H. The signals S<SP>1</SP> 1  and S<SP>1</SP> 2  are fed to the primary winding 3 of a transformer by way of a switching arrangement including transistors T1, T2. T3 controlled by the inverted clock signal H whereby the required signal B' is produced at the secondary winding 4 of the transformer.
Patent GB-250189-A (GB)
Title: Improvements in or relating to driving mechanism
IPC: B04B9/12
Filed: 1926-02-23
Abstract: 250,189. Sharples Specialty Co., (Assignees of Ayres, A. U.). April 6, 1925, [Convention date]. Universal joints; clutches, ratchet. - A mechanism for driving high-speed spindles of centrifugal machines &c. consists of a hollow non-vibrating quill 15 which carries a pulley or like driving member 14 at one end while a positive driving engagement is maintained between the spindle 2 and the quill, and the spindle which is free for flexure in the quill is guided in the quill, both without the use of springs. The driving means, which allow the spindle to overrun the quill, are housed within the pulley, and comprise co-operating conical surfaces to centre the spindle with respect to the quill while allowing angular motion and parts associated with the conical surfaces whereby the spindle is positively driven. The quill runs on ball bearings 3 carried by a sleeve 9 which is formed with channels 9<1>, 33 to feed lubricant to the bearings from a supply passage 32. A ring nut 16 holds the inner ball race 6<1> on the quill and is bevelled to form with a flared ring 12 supporting the outer ball race 5' on oil passage 13 through which the lubricant passes out to a groove 36 and pipe 38. The driving pulley 14 houses a ring ratchet 25 having spring pressed pins 28 engaging a ratchet surface 28<1>. This ring ratchet carries the outer member 19 of the conical driving and centreing members, Fig. 6, which it drives by means of lugs engaging slots 42. The inner member 45 is secured to the spindle by means of a taper headed screw expanding a split end 20<1> of the spindle and engages by means of lugs 47 the remaining slots 42 of the outer member 19. The inner member 45 may be lifted out.
Patent GB-470778-A (GB)
Title: New rubber compositions
IPC: C08L7/00
Filed: 1936-02-20
Abstract: In the compositions described in the parent Specification, all or part of the chlorinated rubber is replaced by a chlorinated polymeric aliphatic compound, having a chlorine content of over 50 per cent, e.g. polyvinyl chloride, or an after chlorinated product, such as obtained by the process described in Specification 401,200, [Group IV], chlorine-containing polyvinyl ethers, or afterchlorinated 2-chlorobutadiene polymers. Specification 420,116 also is referred to.
Patent GB-452214-A (GB)
Title: Improvements in or relating to blasting cartridges or borehole charges
IPC: F42B1/00
Filed: 1935-02-18
Abstract: 452,214. Blasting - charges. WHITE, A. G., Arthurlie, Caledonia Road, Saltcoats, Ayrshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. Feb. 18, 1935, No. 5228. Drawing to Specification. [Class 9 (i)] To provide a free space in a borehole for "cushion blasting," the explosive charges placed end-on are given a solid triangular or other non-circular cross-section circumscribed by the circle of the borehole cross-section but of substantially smaller area, and having such a shape that, whatever the relative rotational position of the adjacent charges, the area of contact between them is never less than 50 per cent of the cross-sectional area of the borehole, thereby ensuring effective propagation of the explosion.
Patent GB-230073-A (GB)
Title: Method of and means for operating mechanically driven rectifiers in connection with electric transformers
IPC: H02M1/20
Filed: 1925-02-25
Abstract: 230,073. Lodge-Cottrell, Ltd., (Lurgi Apparatebau-Ges.). Feb. 25, 1925. Commutator switching-arrangements. - A method of operating several synchronouslyrotating mec!hanicallydriven rectifiers in conjunction with one transformer consists in displacing the fixed contacts of the several rectifiers relatively to one another, so that a lower potential is obtained from the second and subsequent rectifiers than from the first. The transformer UV supplies two rectifiers E1, E2, the fixed contacts of the first of which are in position for collecting current at the peak, whereas those of the second are displaced so that current is obtained therefrom at a lower potential than that of the first.
Patent GB-457186-A (GB)
Title: Improvements in and relating to artificial teeth
IPC: A61C13/08
Filed: 1935-02-18
Abstract: 457,186. Artificial teeth. WACKER, F., 52, Mainzer Landstrasse, Frankfort-on- Main, Germany. Feb. 18, 1935, No. 5242. Application for addition to 405,297. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 17, 1935]. [Class 81 (ii)] The porcelain portion of an artificial tooth of the kind described in the parent Specification is so formed that the recess in the tooth which receives the pin on the backing lies at an angle to the tooth axis. This construction permits the tooth to be formed in a twopart mould 1, 2, wherein the tooth forming cavities 7, 8 lie on inclined faces 3, 4 connecting the stepped horizontal contact surfaces 5, 6. The tooth recess is formed by a pin 12 on the mould part 1. Moulds may be used having a number of pairs of recesses so as to produce a series of, for instance, incisor and canine teeth. Teeth of different sizes may have parts of uniform size to fit the backings; thus the arched surface 9 formed by the part 16 of the mould shown in Fig. 1 may extend to the sides of the tooth as shown in Fig. 4, or may, in larger teeth, be continued as a straight portion formed by the part 15 of the mould.
Patent GB-1162614-A (GB)
Title: Method for Obtaining Pure Acetyldigoxin in the alpha-Form
IPC: C07G3/00
Filed: 1968-02-01
Abstract: 1,162,614. α-Acetyldigoxin. HEILMITTELWERKE WIEN G.m.b.H. 1 Feb., 1968 [7 Feb., 1967], No. 5290/68. Heading C2U. Pure α-acetyldigoxin is obtained from a mixture containing acetyldigitoxin, acetylgitoxin and acetyldigoxin, by dissolving the mixture in an alcohol, distributing the resulting solution between water and a chlorinated hydrocarbon, and isolating the α-acetyldigoxin which separates from the chlorinated hydrocarbon phase.
Patent GB-1167463-A (GB)
Title: An improved Low Pressure Casting Furnace
IPC: B22D18/04
Filed: 1968-02-02
Abstract: 1,167,463. Discharging molten metal. MASCHINENFABRIK OERLIKON. 2 Feb., 1968 [1 March, 1967], No. 5338/68. Heading F4B. A low-pressure molten metal casting furnace comprises an open-topped iron vessel 1 having a refractory lining 2, which is sealingly closed by a two-part quick release cover. One part 4 of the cover carries a resistance heating element 5, and the other part 6 carries one or more riser pipes 7 to discharge the molten metal when the furnace is pressurized by gas introduced through pipe 8.
Patent GB-511849-A (GB)
Title: Improvements in and relating to stands or trestles for wringers and the like
IPC: D06F1/00
Filed: 1938-02-21
Abstract: 511,849. Trestles; wringer stands. SIMS, R. S. C. Feb. 21, 1938, No. 5354. [Class 52 (iii)] [Also in Group VIII] In a folding trestle for wringers, the two front legs 10 each carry a pivoted stay 16, the free ends of which are connected by a cross-member 20 slidable in slots or guides 18 in or on the rear legs 12. The cross-member may be rotatably secured to the stays or integral therewith. One stay may be formed as a footrest. According to the Provisional Specification the stay members may be unconnected. Specification 449,966 is referred to.
Patent GB-738674-A (GB)
Title: Improvements in or relating to electric circuit interrupter
Inventor: TAYLOR PHILIP LEONARD
IPC: H01H9/34
Filed: 1953-02-27
Abstract: 738,674. Arc-rupturing in switches. ALLISCHALMERS MANUFACTURING CO. Feb. 27, 1953, No. 5523/53. Class 38 (5). A switch has an arc chute with a plurality of spaced notched or slotted insulating barrier plates arranged transversely to the arc, some of the plates each having a cluster of apertures some of which are equally spaced from the zone of arc initiation to facilitate the formation of parallel arc branches. Fig. 6 shows one group of plates in which plate 50 has apertures 52 arranged in a cluster adjacent a semi-circular arc-centring notch 51, plate 53 has a V-shaped notch 54 with apertures 52 in a smaller cluster near the closed end of the notch and plate 55 has an elongated arc-constricting slot 56 with apertures 52 extending in a line towards the exhaust end of the plate. The Specification also describes and illustrates many other combinations of barrier plates having various types of slots or notches in conjunction with varied patterns of apertures, and refers to Specification 738,730 which was divided out of the present application.
Patent GB-274755-A (GB)
Title: Improvements in brakes for bicycles and the like vehicles
IPC: B62L1/16
Filed: 1927-03-01
Abstract: 274,755. Jeay, M. March 1, 1927. Brake mechanism.-The brake is of the calliper type wherein brake blocks g are mounted on the lower ends of two two-armed levers a, b, the upper ends of which are adapted to be separated against spring action by an arch-shaped bridgepiece 13, which engages rollers 3 on the levers and passes through transverse slots in the upper arms of the levers. According to the invention, each of the levers a, b is made of two flat plates, 1, 2, united by distance-pieces, which may comprise the rollers 3, the pivot bearing 5, and bolts 4 carrying the brake shoes, the levers being controlled by torsion spring 10 at the pivots. For adjustment purposes, the brake shoes are carried by studs' 6 rotatably mounted in transverse holes in the bolts 4, which are also rotatable in the plates 1 ,2, the parts being locked by nuts 7.
Patent GB-948095-A (GB)
Title: Liquid handling apparatus
IPC: F04F1/02
Filed: 1961-02-16
Abstract: 948,095. Raising liquids by gaseous pressure. UNION TANK CAR CO. Feb. 16, 1961 [May 26, 1960], No.5737/61. Heading F1R. A chamber 16 is connected at 20 to a reversible compressor P so that the chamber may be subjected to positive or negative pressure by reversing the motor M whereby liquid is drawn from a chamber 18 and discharged to-an outlet 28. Starting, stopping and reversing of the motor is controlled by electrodes 46, 48, 50 in the chamber 18 and electrodes 52, 54, 56 in the chamber 16, which when shorted or cleared by the liquid make or break control circuits.