baber/WOPTO huggingface dataset:
Patent GB-460479-A (GB)
Title: Fluorescent screen
IPC: C09K11/63
Filed: 1936-03-02
Abstract: 460,479. Fluorescent materials. FARNSWORTH TELEVISION, Inc. March 2, 1936, No. 6257. Convention date, March 13, 1935. Drawings to Specification. [Class 98 (i)] A mixture of zinc borate activated with ¢-3 per cent by weight of manganese dioxide and non-activated zinc sulphide are used in a screen composition which is processed in a cathode-ray tube at a temperature below that at which combination between the zinc sulphide and the manganese dioxide would take place. The zinc borate is prepared by combining zinc oxide with boric acid to give different compositions and different yellow fluorescences. The manganese dioxide is added to the zinc borate in about 2À5 per cent by weight and the mixture heated to dull red heat for half an hour. The zinc sulphide which has a sky blue. fluorescence is added to the actuated zinc borate to give a substantially white fluorescence. The material is ground, made into a water suspension and applied to the tube by a spray gun. The processing of the material within the cathode-ray tube is done at 300-400‹ C.
Patent GB-951120-A (GB)
Title: Method and apparatus for analysis of particles in a gaseous stream
IPC: G01N21/72
Filed: 1961-02-22
Abstract: 951,120. Determination of the amount of finely divided substances present in gaseous mediums. NATIONAL SPECTROGRAPHIC LABORATORIES Inc. Feb. 22, 1961 [Feb. 25, 1960], No. 6444/61. Heading G1A. In order to determine the amount of a toxic material present as fine particles suspended in a gaseous medium, such as air, a known volume of the medium is drawn through a filter to collect the particles and obtain a sample, the sample is then heated in an electric arc and the intensity of a suitable spectral line investigated. The apparatus described operates cyclically to draw the gaseous medium through a portion of a continuous band of filter paper for one minute, then to move the band forward so that the sample reaches the test position and the timing and integrating devices are reset. For the first thirty seconds of the next cycle the previously prepared sample is heated in an electric arc. An inlet funnel 11 is coupled by a tube 10 to a mouthpiece with an annular seal held in contact with a portion of filter paper 15 during the preparation of a sample. The plate on the opposite side of the band includes an orifice leading to a pump and volume measuring device. After air has been drawn through for one minute the seal is released and the pump stopped. The band 15 is then driven forward until the sample lies between electrodes 33, 34. To prevent scattering of the sample a band of adhesive coated tape 43, moistened at 51, is brought down and stuck to the filter paper before the sample reaches the electrodes. After a suitable time has elapsed the apparatus is reset and the preparation of a fresh sample commenced. At the same instant a stabilized supply is connected to cause an arc discharge between the electrodes. This discharge is timed to last 30 seconds and is viewed by a photo-multiplier through a lens system and a fixed monochromator passing a spectral line characteristic of the substance of interest. The output of the photomultiplier is integrated and applied to a recording device, to an indicator, and to a limit device. If the integrated output exceeds a certain value a relay operates to energize audible and visible alarms. A diagram indicating how the various units in the apparatus are connected and timed to operate cyclically is given (Fig. 7, not shown).
Patent GB-901645-A (GB)
Title: A process for the production of potassium phthalate and phthalic anhydride
IPC: C07C51/41
Filed: 1959-02-25
Abstract: A process for working up monopotassium phthalate to dipotassium phthalate and phthalic anhydride comprises heating dry monopotassium phthalate to a temperature at least equal to its melting point to cause conversion thereof to dipotassium phthalate, phthalic anhydride and water, distilling off the phthalic anhydride and water and crystallising out the dipotassium phthalate.  In two modified processes (a) the phthalic anhydride obtained is reacted with dipotassium terephthalate and water to produce terephthalic acid and monopotassium phthalate and (b) the dipotassium phthalate obtained is thermally isomerised to dipotassium terephthalate which is then used in the production of terephthalic acid by reaction with phthalic anhydride and water. Examples are furnished.
Patent GB-348742-A (GB)
Title: Improvements in automatic emergency brake mechanism for motor-driven road vehicles
IPC: B60R19/26
Filed: 1930-02-27
Abstract: 348,742. Vehicle brakes. BARDELL, W., 985, Yardley Wood Road, and TAYLOR, J., 61, Glastonbury Road, both in Yardley Wood, Birmingham. Feb. 27, 1930, No. 6476. [Class 103 (i).] Actuated or applied by wheel guards and by driving-mechanism disengagers.-In an emergency brake mechanism for motor-driven road vehicles having a collision guard or bumper which automatically applies either the front wheel brakes or all four brakes through operative connections independent of the ordinary lever or pedal controls, and simultaneously declutches the engine through operative connections to the clutch-pedal lever, the bumper, to maintain braking, is provided with automatic locking devices releasable by the driver of the vehicle. The Figure shows a method for applying all four brakes by means of two rods l attached to a bumper a having two pairs of angle brackets b interconnected by a rod c and slidingly supported on guide blocks d on the chassis e against the action of springs g surrounding control pins /. Pivoted to each block d is a ratchet lever h cooperating with a pawl i fixed to one of the anglebrackets b and held against movement by a spring j. The inner ends of the rods l are secured to rocking levers q connected by rods s to double-armed levers t having connections v, w, to the front and rear wheel brakes respectively. The levers q are also connected by links x, y, z to a cam shaft 1 in operative association with the clutch-pedal lever 3. When the brakes are applied and the clutch disconnected by inward movement of the bumper a the latter is locked in this position by the ratchet and pawl devices h, i until the lever is lifted by the driver by means of a connection k. In a modification the front wheel brakes only are applied when the bumper is struck.
Patent GB-470240-A (GB)
Title: Improvements in electric accumulators
IPC: H01M10/24
Filed: 1937-03-05
Abstract: 470,240. Batteries. CHLORIDE ELECTRICAL STORAGE CO., Ltd. March 5, 1937, No. 6533. Convention date, June 8, 1936. [Class 53] An accumulator having a zinc negative electrode is provided with an electrolyte consisting of an alkali which is partly neutralized by boric acid. Potassium hydroxide may be used and sufficient boric acid may be added to form a solution of potassium metaborate. The negative electrode may comprise a plate of porous iron or nickel or a nickel iron alloy, the pores of which are filled with zinc which may be mixed with cadmium. The zinc may be introduced into the porous plate by first filling the pores with a solution of zinc oxide in ammonia, evaporating the water and ammonia and electrolytically reducing the zinc hydrate left in the pores. A quantity of cadmium hydrate may be dissolved in the zinc oxide solution to cause cadmium to be mixed with the zinc. Instead of the zinc oxide solution a solution of a zinc salt may be used. The porous plate may be amalgamated with mercury before or after the deposition of the zinc. Alternatively, the negative plate may be formed with pockets into which are pressed pellets of spongy zinc or zinc dust mixed with mercury oxide. The positive electrode may consist of nickel hydrate.
Patent GB-232009-A (GB)
Title: Improvements in turning lathes
IPC: B23Q35/10
Filed: 1924-03-13
Abstract: 232,009. Kemp, J. W., and Zeale, R. T. March 13. 1924. Lathes. - In means for turning articles of non-circular cross-sectional shape, comprising a stationary workpiece and a rotating tool guided through the medium of a cam groove and a roller or equivalent, the toolholder is mounted in a carrier driven by a shaft on which the carrier is capable of sliding movement. The tool holder 7 is mounted in the flange 5<a> or a carrier 5 rotatably mounted in a fixture 2 which carries a detachable guide plate 3 and is movable along the bed of the lathe. The carrier 5 is rotated by a splined shaft 11. The tool is slidably held in the holder by a bracket 9 provided with a roller 10 travelling in a groove 4 in the guide plate 3. The tool, in addition to its radial movement, may, as shown in Fig. 3, be rocked on a pivot by means comprising a lever 16 pivoted on the bracket 9 and carrying an additional roller 17 also engaging the groove 4. The shorter arm of the lever fits within a forked portion of a clamp 13 which is pivotally mounted on the bracket' 9 and carrier the tool 8.
Patent GB-989939-A (GB)
Title: Pneumatic bearing for supporting an electric motor
IPC: G01C19/20
Filed: 1964-02-17
Abstract: 989,939. Bearings. BENDIX CORPORATION. Feb. 17, 1964 [Feb. 18, 1963], No. 6539/64. Heading F2A. [Also in Division G1] A device such as a gyroscope has both its gimbal and a rotor supported by pressurized air. In an embodiment, a rotor 36 is positioned within a cylinder or gimbal 12, which is supported by pressurized air supplied from an inlet 20 and passages 22, 24 to a bearing-gap 18 formed between a sleeve 14 and the gimbal 12 and to a bearing-gap formed between endplates 16, 16a and the gimbal 12. Pressurized air is also supplied to the bearing gaps from the passage 22 through radial passages 51, 51a which are in end-plates 16, 16a, through passages 53, 53a, 55 and 55a, through bores 59, 59a, through passages 61, 61a, and through counter-bores 63, 63a. The rotor 36 is supported by pressurized air supplied from the bearing gap 18 through a passage 26, bores 28, 40 of a shaft 30 and through a passage 42 which leads to bearing gaps 38, 44 formed between the shaft 30 and the rotor 36 and between endplates 46 and the rotor 36 respectively. The end-plates 46 are integral with the shaft 30 which is carried by arms 34 extending from the gimbal 12.
Patent GB-632811-A (GB)
Title: Improvements in or relating to caps for the reclosure of containers normally closed by a disc of sheet material
IPC: B65D51/22
Filed: 1947-11-01
Abstract: 632,811. Milk-bottle openers. SLATER & WHEELER, Ltd., and DAVIES, J. P. Nov. 1, 1947, No. 6553. [Classes 125(ii) and 125(iii)] A cap 11 for reclosure of a container such as a milk bottle normally closured by a disc com prises a dependant spike 12a for removing the disc and a handle 12b con stituted by a single piece of metal 12. The cap 11 may have a shoulder 11b or two such shoulders to fit different sized bottles. The metal strip may be riveted to the cap, Fig. 3 (not shown).
Patent GB-882695-A (GB)
Title: Improvements in or relating to structural parts subject to fatigue stresses
IPC: C21D9/50
Filed: 1958-03-03
Abstract: A method of heat treating a structural part comprises locally heating a selected region of the part and modifying the surface configuration to indicate the centre of such region and the extent of the heating. The heating may be by arc welding, resistance welding, induction heating, or gas welding and the surface modification may comprise a stud welded thereto or a dimple formed therein, the shape of the stud or dimple indicating the amount of heat applied and the location indicating the centre of the region. A stud of the kind described in Specification 804,804 may be used and a narrow annular groove machined round the weld.
Patent GB-681966-A (GB)
Title: Improvements in or relating to root crop harvesting machines
IPC: A01D17/00
Filed: 1950-03-20
Abstract: 681,966. Root-crop harvesting. SMITH T. S. Feb. 13, 1951 [March 20, 1950], No.. 6858/50. Class 6(iii) A root-crop harvester includes a riddle 7 comprising bars 12 individually pivoted at their front ends to a cross-member 11a and free at their rear ends. The harvester may be similar to that described in Specification 633,573, in which roots lifted by a share 4 are propelled up the riddle 7 by scrapers 6 on an endless chain 5, to fall into a rotary drum 8. Each bar, Fig. 3, is L- shaped with one limb 13 passing through a hole 14 in the member 11a and being retained there by a pin 15. Towards the rear, the bars rest on a grooved roller 16. which may be eccentrically mounted so as to reciprocate the riddle when driven. Alternatively, the bars may rest on an angle bracket having a corrugated upper surface. The scrapers 6 may be grooved where they engage the bars 12.
Patent GB-884445-A (GB)
Title: Improvements in or relating to the construction of ceilings, roofs and the like
Inventor: FELDMANN ALEXANDER
IPC: E04G11/48
Filed: 1957-03-01
Abstract: 884,445. Ceiling shuttering. FELDMAN, A. March 3, 1958 [March 1, 1957], No. 6937/58. Class 20(2) Ceiling shuttering 12 is supported by a structure comprising vertical telescopic supports 21, 22 connected together by horizontal members 16, 17 and inclined braces 18, 19. The members 21, 22 are connected together by a pin 24 engaging a slot 25 and adjustment is effected by nuts 27, 28 or a bifurcated nut (Fig. 7, not shown) to lower the upper part of the structure on to a wheeled carriage 34 and then to raise the lower members 22 so that the structure may be moved to another position. The pin 24 is engaged with one of a number of holes in the member 21. In a modification an unscrewed collar is arranged between the nuts 27, 28. Adjacent structures are connected by horizontal members 13.
Patent GB-758916-A (GB)
Title: Improved method of gear shaving
IPC: B23F19/06
Filed: 1953-03-13
Abstract: 758,916. Gear-finishing. HINDMARCH, T. Jan. 12, 1954 [March 13, 1953], No. 6947/53. Class 83 (3). In a method of gear-shaving in which either the gear or tool is rotated while the other is braked, the braking load is so adjusted as to produce a tooth deformation equal to that which the finished gear will have in service. The cutter A is mounted on a slide D traversed by power, or by a handle F. The work G is carried on an angularly-adjustable slide L and is braked by a dynamometer K. The slide L is carried on a slide N traversed vertically between fixed stops. The dynamometer may be replaced by an electrical, hydraulic or mechanical regenerative system. A pitch-line speed of 200-500 ft./min. is employed.
Patent GB-397397-A (GB)
Title: Improvements in and relating to reflectors
IPC: C03C17/38
Filed: 1933-03-08
Abstract: A refractory paint used for coating the metal protective backing layer of a silvered reflector consists of zinc oxide, talc, and sodium silicate ground in water to a homogeneous mass. Suitable proportions are zinc oxide 25 pounds, talc 10 pounds, sodium silicate 4 quarts, water 12 quarts.  The paint is sprayed on to the metal surface which is then dried at a temperature of, e.g. 150-200 DEG  F. for about an hour.
Patent GB-939114-A (GB)
Title: Improved vehicular steering column
IPC: B62D1/181
Filed: 1962-02-23
Abstract: 939,114. Adjusting steering columns. FORD MOTOR CO. Ltd. Feb. 23, 1962 [March 24, 1961], No. 7097/62. Addition to 911,856. Class 79(5). In a modification of the invention of the parent Specification wherein the steering column of a vehicle is pivotally mounted so that it may be displaced to one side to enable the driver to enter the vehicle, a spring loaded latch retains the steering column in the driving until it is released by moving a transmission ratio selector lever to the " park " position. The steering column 15 (Fig. 3) is pivotally attached at its lower end to the vehicle frame by a bracket 23 and is supported near its upper end from the underside of the dashboard by a bracket 24 having an arcuate track portion 26 engaging nylon bearings 29, 30 (Fig. 4) on a bracket 28 secured to the steering column. When the steering column is in the driving position a nylon bumper 38 on the bracket 28 engages an adjustable stop 39 on the bracket 24 and a detent member 45 (Fig. 6) carried by a spring-loaded latch 43 pivoted on a bracket 42 secured to the steering column 15 engages a notch 47 in a plate 46 bolted to the bracket 24. A tube 21 disposed co-axially within the steering column 15 and connecting the ratio selector lever with an automatic transmission system carries a cam member 52 projecting through an aperture in the steering column. When the ratio selector lever is moved to the " park " position the cam member 52 (Fig. 7) engages the end 53 of the latch 43 to move the detent member 45 out of the notch 47 so that the steering column 15 may be displaced to one side. Due to interference between the detent member 45 and the edge of the plate 46 the cam member 52 is retained within a notch 54 in the latch 43 so that further actuation of the ratio selector lever is prevented until the steering column is returned to the driving position. An adjustable stop 34 (Fig. 3) engages a nylon bumper 33 to limit displacement of the steering column 15 and the end of a leaf spring 35 on the bracket 28 engages a notch 37 to resiliently retain the column in the displaced position.
Patent GB-356669-A (GB)
Title: Lighting arrangement for kinematograph protectors with lens crowns for the optical compensation of the travel of the picture
IPC: G03B41/08
Filed: 1930-03-04
Abstract: 356,669. Kinematograph apparatus. BUOL, C. J., 47, Susenbergstrasse, Zurich, Switzerland. March 4, 1930, No. 7111. Convention date, March 4, 1929. Void [Published under Sect. 91 of the Acts]. [Class 97 (i).] In continuous-feed kinematograph apparatus, flickering is prevented by the production of a real image of the source of light, of dimensions at least equal to those of two adjacent compensating lenses between the film and the synchronously rotated compensating lenses. As shown in the Figure, the compensating lenses 5 produce on the plane 6 stationary images of the moving pictures 1, while the condenser 3 produces at 4, immediately in front of the compensator 5, a real image of the source of light 2. The upper and lower edges O, O<1>of the light aperture 7, 7<1>, the distance between which corresponds exactly to one picture section, are of graduated permeability to light in the direction of their effective edges. Alternatively, a clear sheet of glass of which two facing margins are darkened to complete opacity could be employed.
Patent GB-900703-A (GB)
Title: High frequency coil assemblies for use with thermionic and semi-conductor devices
Inventor: PRESSLY ARTHUR DAVID
IPC: H01F17/04
Filed: 1960-03-01
Abstract: 900,703. Transformers and inductances. WEYMOUTH RADIO MANUFACTURING CO. Ltd. Nov. 7, 1960 [March 1, 1960], No. 7183/60. Class 38 (2). [Also in Group XXXVI] An adjustable highfrequency coil assembly for use with thermionic or semiconductor devices comprises a ferrite or bonded iron core b carrying a winding c which is surrounded by an axially adjustable screwthreaded ferrite or bonded dust bush d fitted in an internallythreaded insulating sleeve e attached to the base a which carries the core and circuit terminals h. A small capacitor i may be included in the assembly, as shown, or in a recess in the base. A detachable metal cover g is provided. A flat or cup-shaped ferrite ring (Figs. 2 and 3, not shown) surrounding part of the core may be attached to the base. According to the Provisional Specification the assembly may be a transformer.
Patent GB-549856-A (GB)
Title: A device for use in cleaning chimneys
IPC: F23J3/02
Filed: 1941-06-07
Abstract: 549,856. Removing and collecting soot. WHITTINGHAM, R. June 7, 1941, No. 7233. [Class 126] A device for use in cleaning the chimneys of open fireplaces, so as to collect the soot while preventing its escape into the room, comprises a loose canvas or like screen 5 attached to a frame 1 and formed with a hole 6 for the insertion of the broomsticks, and a receptacle 9 adapted to enter the grate and to be attached to, the frame, the back face 27 of which together with that 28 of a second frame 12 carring the receptacle 9, is surfaced with felt, rubber &c. to bear against the tile surround of the fireplace. The frames 1, 12 are adjustably connected together by bolts and slotted plates, and the upper edge of the frame 1 is attached to the top of the grate opening by clamping- plates 33, 34 connected to sleeves 31, 32 adjustably secured upon pins 29, 30 by screws 35, 36. The receptacle 9 has a closed forwardly-extending bag portion 10 to retain the soot. Closable openings 7, 8 serve for the insertion of the sweep's hands for manipulating the parts. An extension may be fitted to the top of the frame 1 by means of pins entering holes 41. Specifications 490,235, 490,236 and 490,279 are referred to.
Patent GB-726701-A (GB)
Title: Milling and boring machines and the like having turret-heads
IPC: B23B39/02
Filed: 1953-03-17
Abstract: 726,701. Boring, facing, &c. machines. SOC. NOUVELLE DE CONSTRUCTION DE MACHINES - OUTILS ET D'OUTILLAGE PROCEDES, C. W. B. March 17, 1953 [April 15, 1952], No. 7327/53. Class 83 (3). A milling and boring machine &c. comprises a rotary turret 15 mounted on a body 14 detachably secured to the machine headstock 9, the axis of the turret being transverse to the axis of the spindle 10 and offset so that the turret clears the spindle. The turret-head is fitted to a machine having a work slide 2, a sliding column 5, a vertical slide 7 and a slide 9 fitted both with a milling spindle 49 and also the concentric boring spindle 10 which can be fed axially. The turret 15 is indexed and positioned by conventional means indicated at 33 and manually rotated or power-driven worm gearing 35. It is clamped by a nut 27, which is manually tightened by worm-gearing 31. The bearings 17, 18 carrying the turret shaft 16 are mounted in a freely sliding sleeve 19 to prevent distortion when the turret is clamped. The tool spindles, such as 38, are rotated from the milling spindle 49 through a clutch 52, a sleeve 46 and gearing 45 ... 43. The gear 44 is disengaged before the turret is indexed. The two spindles 10, 49 may be used in a normal manner while the turret is in position. The turret may carry a planing tool and the table 2 be reciprocated. Alternatively, a turning tool may be fitted and a turn-table provided on the machine. In a further modification, the turret toolspindles are vertical and are rotated from the sleeve 46 through bevel gearing and an axially movable splined shaft. The turret axis may be horizontal or oblique. The turret may have horizontal, vertical and oblique tool-spindles. Specifications 687,280 and 707,505 are referred to.