baber/WOPTO huggingface dataset:
Patent GB-477678-A (GB)
Title: Improvements relating to high frequency inductance coils
IPC: H01F17/04
Filed: 1937-06-02
Abstract: 477,678. Inductances. STEATITMAGNESIA AKT.-GES. June 2, 1937, No. 15365. Convention date, Feb. 17. [Class 38 (ii)] Magnetic dust cores for high - frequency inductance coils are formed to have a centre part, made of carbonyl iron powder, passing through the winding and the remaining parts, made of magnetite powder, arranged wholly or partly to close the magnetic circuit of the centre part. The cores may be reel-shaped or of the pot type and the differently composed parts may be formed into an integral whole by suitably charging the mould in which the core is made. The centre part g of the core may be formed separately from the remainder of the core and may be adjustable to vary the inductance of the coil. The part g may be screw-threaded and arranged to engage with a screw-thread in the parts e, f of the core or in the coil former of the winding a.
Patent GB-671951-A (GB)
Title: Improvements relating to arrangements for measuring voltage and/or current
Inventor: ROSSER WILLIAM JAMES
IPC: G01R17/00
Filed: 1949-06-10
Abstract: 671,951. Bridge circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 12, 1950 [June 10, 1949], No. 15456/49. Class 37. In order that the terminals of a voltage or current measuring instrument shall be at lower potentials than the terminals of the source of voltage to be measured this source is included in one arm of a bridge, the instrument being in a diagonal. Two voltage sources 1, 2, Fig. 1, are connected in series, one terminal of the source 1 being earthed. It is required to measure the voltage across source 2, which may be a stand-off voltage in a television transmitting apparatus, while keeping the terminals of the measuring instrument at low potentials relative to earth. The source 2 is connected in one arm of a bridge including resistors 3, 4, 5, 6, Fig. 2, a current meter 7 being included in one diagonal of the bridge in series with a current-reducing resistor 8. The source 1 is connected across the other diagonal, so that the meter 7 is connected to the source 2 through resistors 6, 8, 3 and to earth through resistors 4, 5. The bridge is balanced as regards the resistances in the arms, including the resistance of the source 2, so that the voltage of the source 1 has no effect on the current flowing in the meter 7. The meter 7 then indicates the voltage of the source 2. The potentials of the terminals of the meter 7 with respect to earth may be adjusted by suitable choice of the resistors in the bridge arms and may be further adjusted by including a voltage source between the earthed terminal of the source 1 and the junction of the resistors 4, 5. To compensate for errors introduced if a bleeder resistor is connected across the sources 1, 2 in series, a resistor may be connected between the junction of the resistors 4, 5 and a point on the resistor 6 which divides the resistor 6 in the same ratio as the ratio of the resistance of the source 2 to the resistor 3. For measuring current, the source 2 is replaced by a resistor of known value in the current circuit. The junctions of the resistors 3, 4 and of 5, 6 may be connected to earth via devices such as neon tubes which are normally non-conducting so that if resistor 4 or 5 becomes open-circuited a current path to earth is provided and the meter terminals are prevented from rising to high potentials.
Patent GB-593654-A (GB)
Title: Improvements in and relating to sound recording apparatus
IPC: G11B17/02
Filed: 1945-06-18
Abstract: 593,654. Sound-recording apparatus. BRITISH BROADCASTING CORPORATION, and DAVIES, H. June 18, 1945, No. 15481. [Class 40 (ii)] In a sound-recording machine for disc records, in which a carriage carrying the cutting head is made to traverse along guides by means of a lead-screw, settable stops are arranged at intervals along the traverse of the carriage corresponding to particular points on the recording blanks, such as the correct starting places for blanks of various sizes, the said stops being arranged to be effective only while the carriage is being traversed manually, i.e. when engagement between carriage and lead-screw is interrupted. Fig. 2 shows a sectional end-view of a lead-screw 26 at a moment when engagement between the lead-screw 26 and a half-nut 25 is interrupted. The half-nut 25 is mounted on the end of a lever 27 which is movable about a spindle 24 on the carriage 44 by a cam 19 which raises a bar 21 in contact with a roller 22 on the end of the lever 27. When the cam 19 is turned anticlockwise the half-nut 25 is brought into engagement with the leadscrew 26 owing to the tension of the spring 41 and at the same time the stop-pin 36 is lowered a small amount by means of members 28, 31 so that it cannot be engaged by either of the settable stops 15, 16, 17, 18, Fig. 1, or by the fixed stops 42, 43. Switches 48, 49 with contact arms 46, 47 are provided to enable the motor to be automatically switched off in the event of the carriage 44 being inadvertently allowed to travel beyond the end stops 42, 43 while in engagement with the lead-screw 26.
Patent GB-793161-A (GB)
Title: Improvements in and relating to storage devices for images
IPC: H01J31/52
Filed: 1954-05-26
Abstract: 793,161. Storage tubes. SHELDON, E. E. May 26, 1954, No. 15491/54. Class 39(1). The composite screen of a discharge tube for converting X-ray and other radiation images into visible images comprises a fluorescent layer separated from the photo-electric layer by a light-transparent layer of a synthetic plastic material, the fluorescent material also being embedded in a similar material, e.g. a polyester. Radiation falling on screen 5A is converted to an electron image which is amplified in a similar screen 8, 9, 10, 11, to give a composite electron stream which is accelerated on to a perforate storage target 41. An electron beam 50 is modulated by the storage image to yield a light image on the fluorescent screen 44 corresponding to the original radiation. Penetrating gamma radiation e.g. from radioisotopes requires a pen-hole screen with the photo-cathode.
Patent GB-1283115-A (GB)
Title: Improvements relating to gas cushion vehicles
IPC: B60V1/16
Filed: 1970-04-01
Abstract: 1283115 Gas cushion vehicles AEROJETGENERAL CORP 1 April 1970 [1 April 1969] 15508/70 Heading B7K A gas cushion vehicle comprises a plurality of cushion cells 18 and a plurality of peripheral cushion cells formed by skirts, e.g. 44 which are movable to vary the effective lifting surface area of the vehicle. The skirts 44 are extended by inflation of bladders 48, 50, 52 with gas such as air supplied by a pump 26, through solenoid valves 58, 60, 64 and respective conduits 56, 62, 66, inflation being controlled by a controller 70, e.g. in response to the proximity of an object. The pump 26 also supplies air to the cells 18 some of which escapes through openings 24 to inflate the skirts 44. Roller mechanisms 36, 38 with straps 40, 42 respectively are provided to retract the skirts 44 after the pressure in the bladders has been decreased. The skirts forming cells 18 and the skirts 44 may be made from "Dacron" (Registered Trade Mark) or nylon, neoprene coated.
Patent GB-529262-A (GB)
Title: Improvements in and relating to the production of levulinic acid
IPC: C07C51/00
Filed: 1939-05-25
Abstract: 529,262. Levulinic acid. CORN PRODUCTS REFINING CO. May 25, 1939, No. 15594. Convention date, Aug. 18, 1938. [Class 2 (iii)] In the process of making levulinic acid by heating a solution containing a hexose sugar with a dilute mineral acid, such as phosphoric, sulphuric or hydrochloric acid, improved yields of levulinic acid are obtained by adding sodium chloride to the solution, either separately or together with the hexose. The hexose may be in the form of hydrol, the mother liquor retained from the crystallization of dextrose ; this liquor already contains sodium chloride. The mixture is heated, and the water, formic acid and the mineral acid, if volatile, are distilled off ; the residue is then distilled under reduced pressure to isolate the levulinic acid. The hexose is preferably added slowly to the heated solution containing the mineral acid. An example of the preparation of levulinic acid from hydrol is given.
Patent GB-549630-A (GB)
Title: Improvements relating to infusion packages
IPC: B65D81/00
Filed: 1941-12-04
Abstract: 549,630. Tea infusers. SALFISBERG, L. L. Dec. 4, 1941, No. 15656. Convention date, Nov. 28, 1940. [Class 129] [Also in Groups XVI, VIII and XVII] A tea infuser comprising a bag of parchment paper, or other heat and water resistant paper, is provided with markings, e.g. the name of the tea, or perforations for separating a tag portion from the main body of the bag, or both markings and perforations, formed by scorching so that the liquid into which the bag is immersed is not contaminated by ink used for marking, or by particles of paper left on the edges of the perforations by an ordinary punching operation. The Figure shows an infuser comprising two sheets secured together at their edges to form a bag 4 having a tag 5 provided with markings and separable along a line of perforations 6 and connected to the bag by a spring 7 so that the tag and string may form a handle for the bag. The markings and perforations may be effected by pressing the sheets between heated discs.
Patent GB-117193-A (GB)
Title: Improvements in Firegrates of Kitchen Ranges or the like.
Inventor: FERGUSON WILLIAM DEEBLE
IPC: F23H13/02
Filed: 1917-10-29
Abstract: 117,193. Ferguson, W. D. Oct. 29, 1917. Grates; fuel-economizers.-The front and rear parts B, H of a grate of, or a false grate in, a range are made imperforate in order to prevent air from passing into the flues E, F otherwise than through the fuel. A door C gives access to the flue F to enable the ashes &c. to be removed.
Patent GB-355297-A (GB)
Title: Improvements in or relating to duplex telegraph systems
IPC: H04L5/14
Filed: 1930-05-21
Abstract: 355,297. Transformers. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London, and ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Bell Telephone Laboratories, Inc. ; 463, West Street, New York, U.S.A.) May 21, 1930, No. 15697. Addition to 341,528. Drawings to Specification. [Class 38 (ii).] A screened transformer similar to that described in the parent Specification is employed.
Patent GB-599745-A (GB)
Title: A new or improved instrument for measuring the cutting pressure exerted on metal cutting tools
IPC: B23Q17/09
Filed: 1945-06-20
Abstract: 599,745. Measuring forces. SCHLESINGER, G. June 20, 1945, No. 15719. [Class 106 (ii)] A device for use in measuring solely the tangential cutting pressure exerted on a metal cutting tool, comprises a support 6, 6<1> having a spherical surface 2 forming a mount for a tool holder 1 which reacts against the free end of a resilient cantilever 8 which is anchored at its root end between spaced bearing blocks 12 and 13 carried by the support 6 and wherein also the holder 1 is restrained against movement in the direction of feed by a strut which extends, in a direction normal to the tangential cutting pressure, between the holder and the support 6, the holder being resiliently urged to engage the cantilever and strut. As shown in Fig. 1, the tool holder 1 is mounted on the ball 2 in a rigid support 6 clamped to a machine. The machine tool is placed in a recess 3 in the holder 1 and is clamped therein by two screws 4 and 5. The holder 1 is spring-urged into engagement with a horizontal ball-ended strut 15, not shown, which takes up the " feed force," the ball 2 taking the shank force. The tangential force on the tool A causes the tool holder 1 to move downwardly against the action of a cantilever spring plate 8 which at its forward end has a knife edge 10 bearing against a plate 14 on. the holder 1 and at its back end is fixed as shown between two bearing blocks 12 and 13. The back end of the cantilever plate 8 is of such a strength as to resist any change in position or length due to the tangential force which causes therefore deflection only of the forward end of this plate 8. A stop 21 is provided on the support 6 to limit the deflection of the plate 8. The tool holder 1 has secured to it an armature 23 of an electromagnet 24 so that movement of the holder varies the gap between the armature 23 and the electromagnet 24 which changes can be used to effect meter readings, point readings or graphic records.
Patent GB-1349237-A (GB)
Title: Coated propulsive compositions based on ammonium nitrate and nitrocellulose
IPC: C06B45/24
Filed: 1972-04-05
Abstract: 1349237 Propellants FRANCE ARMED FORCES MINISTER OF 5 April 1972 [6 April 1971] 15725/72 Heading C1D A propellent composition consists of granules comprising ammonium nitrate and nitrocellulose coated with nitrocellulose containing powdered aluminium. More than one coating may be applied using nitrocelluloses of differing nitrogen content. The aluminium may be mixed with the coating material or deposited on the final layer and serves to facilitate ignition and increase water resistance. Diphenylamine or 2-nitrodiphenylamine may be present as a stabilizer. Up to 40% of the nitrocellulose may be replaced by polyvinyl nitrate. In an example, granules formed from ammonium nitrate, nitrocellulose, diphenylamine, and acetone are immersed in water to remove some ammonium nitrate, and then dried and glazed with a mixture of nitrocellulose, diphenylamine, aluminium powder, camphor, ethanol and acetone. The propellent composition may be used as a mortar secondary charge.
Patent GB-352176-A (GB)
Title: Process for the preparation of aliphatic acid anhydrides, specially of acetic anhydride
IPC: C07C45/54
Filed: 1930-05-22
Abstract: Acetic and other anhydrides, dichlor- and diaceto diethyl ether.-Aliphatic anhydrides are produced by heating diaceto-diethyl ether, CH3CH (O,CO,CH3)-O-CH (O,CO,CH3),CH3, or analogous bodies with a catalyst.  Suitable catalysts are substances of acid or salt but not basic nature, such as hydrochloric and sulphuric acids, sulphur dioxide, and zinc and stannous chlorides.  These ethers are produced by reacting with the aliphatic acid or its salt upon the corresponding dichlor ether, which is obtained by the reaction of hydrochloric acid on acetaldehyde or paraldehyde.  In the examples, (1) the dichlor diethyl ether is allowed to stand at ordinary temperature with anhydrous alkali acetate; decahydronaphthalene and a small quantity of zinc chloride in acetone are added, and the acetaldehyde formed is distilled off; the acetic anhydride forms a layer separate from the decahydronaphthalene; (2) the dichlor ether is heated to 80 DEG  C. with benzene and glacial acetic acid until the hydrochloric acid is expelled; the benzene is then distilled off and zinc chloride in acetone is added, when acetaldehyde distils off followed by acetic anhydride; (3) the diaceto ether is heated with zinc chloride in glacial acetic acid at 110-115 DEG  C., acetaldehyde and acetic anhydride distilling off together; they are separated by fractional distillation; (4) the diaceto ether is heated with decahydronaphthalene and zinc chloride in alcohol; (5) the diaceto-ether is heated at 100-105 mm. pressure with zinc chloride in acetone; (6) the diaceto-ether is heated to 120 DEG  C. and sulphur dioxide is passed in, acetaldehyde, paraldehyde, and acetic anhydride being distilled over; (7) the dipropio-ether is heated with zinc chloride in alcohol at 110 DEG  C., propionic anhydride and acetaldehyde being distilled off.
Patent GB-869355-A (GB)
Title: A method of heat exchange between two gases
IPC: F28C3/02
Filed: 1958-05-16
Abstract: 869,355. Gasifying apparatus. HILGERS, G. May 16. 1958, No. 15820/58. Classes 55 (1) and 55(2) Two gases are caused to flow within a cylindrical casing along helical paths having a common axis but different radii such that the angular velocities of both gas streams is substantially the same while their axial velocities have the same or opposite directions. Preferably one gas is a heating gas, e.g. carbon dioxide, and the other gas consists of gaseous hydrocarbons or carries atomized liquid hydrocarbons or powdered coal. As shown, the gases may be caused to flow in apparatus comprising an outer casing a, an internal coaxial hollow cylinder b, a disc-shaped base having two concentric rows of nozzles c, d, and an upper end having annular discharge channels g, h. One gas stream may be supplied through distribution ring f to outer nozzles d while the other gas stream may be supplied through the interior cylinder b to the inner nozzles c. The disc-shaped base may be caused to rotate such that the same angular velocity is imparted to both gases. In Fig. 1 G 1  and G II  represent the helical paths followed by two gases which do not tend to mix and which may be separately withdrawn through discharge channels g and h. If the casing and cylinder are long axially a third discharge channel m may be provided for partially mixed gases (see Fig. 2). In a modification (not shown) the inner coaxial cylinder is replaced by a perforated truncated cone. In an example the two gases are steam containing powdered coal and combustion gases from burning coal in air, the products including watergas. In another example a stream of steam carrying atomized mineral oil is introduced through nozzles c and the products which are withdrawn include CO, H 2 , CO 2  and H 2 .
Patent GB-168688-A (GB)
Title: Improvements in or relating to automobile front axles and steering wheels
IPC: B62D7/18
Filed: 1920-06-11
Abstract: 168,688. Spence, W. L. June 11, 1920. Deflectable axle-ends. - Steering- wheel mountings, of the kind wherein the stub axle of a dished wheel rotates in a bearing sleeve and bush, are constructed with an eyebolt, the depending stem of which forms the steering-pivot, while the eye embraces and is welded or otherwise fixed to the bearing sleeve. In the construction shown in Fig. 1 for ball and roller bearings, the stub axle P rotates by means of roller bearings in a shell L which is embraced by the eye K of an eyebolt having a stem G adapted to swivel for steering in a vertical tube A forming part of the axle, ball thrust bearings being interposed between the stem G and tube A. In a modification with plain bearings shown in Figs. 2 and 3, the stub axle P rotates in a bush N secured in the shell L which forms an oil reservoir, the bearing being lubricated by an oiling ring O. In both forms, the steering arm Q passes through and is bolted to the shell L.
Patent GB-341376-A (GB)
Title: Improvements relating to sliding windows
IPC: E05F11/38
Filed: 1930-05-23
Abstract: 341,376. Window holders. SLEIGH, H. L. and CHESTON, A. S., Widney Works, St. Paul's Square, Birmingham. May 23, 1930, No. 15910. [Class 44.] Sliding windows are held by an eccentric cam 15 which is mounted in a recess 9 and is adapted on rotation by a handle 13 to exert pressure on the edge of the window. The cam may act directly on a flexible lining 4 or through a spring strip 20 having an arched centre part 19 and bowed wings 21. The device may be used with a pair of windows moving in parallel guides.
Patent GB-571948-A (GB)
Title: Improvements in or relating to supports of ropes and cables for aerial ropeways or the like
IPC: E01B25/18
Filed: 1943-09-28
Abstract: 571,948. Suspension bridges. HOLMAN, H. Sept. 28, 1943, No. 15930. Convention date, Oct. 1, 1942. [Class 20 (i)] [Also in Groups XXX and XXXIV] The supporting rope of an aerial ropeway, as distinct from the travelling rope, or of a suspension bridge is carried by a shoe sliding on a curved support carried on a trestle or tower, the ends of the shoe projecting on both sides of the support sufficiently to support the rope equally during idle times as well as when the rope moves slightly due to load or temperature changes. The shoe, Fig. 4, may consist of a series of linked members 9 grooved to receive the rope and having a central rib 13 to take between the flanges of rollers 8 mounted in a piece 6 recessed into a saddle 1a pivoted at 4a to a tower. The roller axles are seated in recesses provided along a curved path or the roller flanges are of varying sizes to provide a curved path. The end shoes may each carry a stop pin 21 which engages a notch in the saddle to prevent overrunning. The curved path may have a uniform curvature or be formed by parts of different radius. The flanges of the rollers 8 and their spindles may rotate in an oil bath formed by the recess 5 for the piece 6, and this recess may have a sump 48, Fig. 19, having an overflow pipe 46 with outlet 47 above the normal oil level 45 so that rain-water collecting in the sump will be forced out by the pressure of the oil above it. The shoes may carry shields 49, Fig. 20 with ends 51 extending beyond the sides 52 of the sump, adjacent shields being overlapped and grooved. The shoes may be connected by hinge joints or they may be secured to a flexible steel strip. The spindles of the rollers may be mounted in ball bearings or recesses lined with anti-friction material. The end shoes may be supported by arms which engage the rope just below its highest point so as to leave a clear trackway.
Patent GB-355734-A (GB)
Title: Improvements in and relating to doffing apparatus for flyer spinning, twisting and like machines
IPC: D01H9/04
Filed: 1930-05-23
Abstract: 355,734. Doffing-apparatus for spinning and like machines. BENZ, E. STUTZ-, 71A, Max Bahrstrasse, Landsbergon-Warthe, Germany. May 23, 1930, No. 15944. [Class 120 (ii).] In flyer spinning, twisting, and like machines the bobbin rails or the carriage upon which they are deposited for doffing purposes are provided with rollers or runners arranged to run on the floor or upon tracks which do not project to any appreciable extent beyond the front of the machine, means substantially independent of the carriage being provided for displacing the bobbin rails thereon, and the means for moving the rails or the carriage being arranged either without or within the path of travel. In the arrangements shown in Figs. 1 and 4, the apparatus being in the position prior to the raising of a bobbin rail into the spinning position, the carriage 53 and duplicate bobbin rails 54, 55 are provided with rollers engaging the floor, chains 50, operated by suitable gear 60, being provided to traverse the carriage and rails, and latches 59 mounted beneath the spinning position being adapted by engagement with a ledge 58 on the rail during such traverse to effect the displacement of the rail 54 in preparation for the succeeding doff. After the rail 55 is raised to the spinning-position and the full bobbins on the rail 54 have been replaced by empty bobbins, the rail 54 is withdrawn to the position shown in Fig. 2 and retained by the latch 59, thus permitting the carriage, in the arrangement shown in Fig. 1, and the operating hook 62, in the arrangement shown in Fig. 4, to be brought into position to engage the rail 55 when it is lowered for doffing. The movement of the rails and carriage to the position shown in Fig. 1 is effected by a stop 56, Fig. 2, on the chain 50. In place of the chain 50, ropes or racks may be used, and the gear 60 may be arranged at such a height that the carriage may run beneath it. In the arrangement shown in Fig. 7, the operating gear is arranged within the path of travel of the carriage 53 and comprises rack and pinion gear 67, 71, which may be arranged on the top of the carriage, the back runner being dispensed with and the carriage resting on a fixed support such as the bearing block of the pinion. A supporting bar for the rails may be arranged with its surface above that of the carriage so that the rails only rest on the carriage when the full bobbins are being exchanged for empty ones.