baber/WOPTO huggingface dataset:
Patent GB-221856-A (GB)
Title: Improvements in or relating to telephonic receivers
IPC: H04R7/22
Filed: 1923-06-14
Abstract: 221,856. Graham, E. A. June 14, 1923. Diaphragms.-The diaphragm of a telephone receiver is supported in a definitely limited manner on the side upon which is the electromagnet and supported or retained on the opposite side by comparatively yielding or elastic means. T h e diaphragm, Fig. 1, is embraced on opposite sides of its periphery by a ring e of elastic material, of the shape shown, which rests on an internal flange of the casing. The ring e is lightly pressed upon by a metal or other bearing ring k, having a number of spring fingers k<1> extending radially inwards and bearing against the inner side of the cover f. These fingers may lie in shallow grooves f<2> formed in the cover. The bearing ring k may be provided instead with spring fingers which bear directly downwards upon the ring e, and in that case the ring k may be housed in a recess in the cover f, or the spring fingers may bear against the underside of the cover or a channel therein. The spring fingers may be attached, as by riveting, to the cover f or to the ring k as the case may be, and when the ring k is of metal the fingers may be struck from it. Elastic bow-shaped members k<2>, Fig. 3, may be attached to the cover f and bear on the ring k; or the ring k may be dispensed with and the bow-shaped members act directly on the ring e. These members k<2> may be fixed to the ring k and bear against the cover f. In a further modification, the cover mav be recessed above the bearing ring k, and a number of rubber balls or pads or coiled metal springs be arranged to bear upon the ring k. The ring e may be supported over only a portion of its radial width, leaving an inner portion unsupported. The invention is applicable to large diaphragms, the cover f being replaced by a ring of metal. Specifications 25112/09 and 15369/15 are referred to. According to the first Provisional Specification, a ring of sound-deadening material such as felt is interposed between the cover and the ring which embraces the periphery of the diaphragm.
Patent GB-1382426-A (GB)
Title: Rotary positive-displacement hydraulic machines
IPC: F04C15/00
Filed: 1971-05-18
Abstract: 1382426 Rotary positive-displacement machines DOWTY HYDRAULIC UNITS Ltd 18 May 1972 [18 May 1971] 15530/71  Heading F1F In an hydraulic gear-pump, or motor, with axially-pressure-loaded bearing-bushes 20. .23 supporting shafts 16. .19 for the gears 14, 15, the diameter of each bush is sufficiently less than that of a bore 54 in which it is lodged to provide a clearance 55 allowing liquid to flow from the highpressure port 13 into an aperture 50 to lubricate the respective shaft. Liquid issuing from the aperture 50 in each bush flows in opposite directions axially along the shaft into either a chamber 36 or 37 communicating with the low-pressure port 12 through a hole 48 or an annular recess 40, 41, 42 or 43. Pressure-loading chambers 34, 35 are sealed relative to the chambers 36, 37 by rings 31 and communicate with the port 13. Slots 39 determine the circumferential extent of high pressure areas on the faces of the bushes adjacent the gears. The bushes on at least one side of the gears may be united.
Patent GB-1503573-A (GB)
Title: Drawing device for textile fibres
IPC: D01H5/26
Filed: 1975-04-16
Abstract: 1503573 Drawing device N SCHLUMBERGER & CIE 16 April 1975 [27 May 1974] 15544/75 Heading DID In a drawing device, a movable upper cylinder is applied against a lower cylinder by at least one hook acting on the upper cylinder axle, the or each hook being carried by one end of a movable arm connected to a frame of the device by means incorporating two parallel rods of equal length articulated on the arm and frame by pins and shafts respectively whose axes are parallel to the cylinder axes, the arm being subjected to elastic means to urge the upper cylinder against the lower, the plane containing the axis of the pins on the arm passing through the zone of contact of the cylinders, the rods being located nearer to the lower cylinder than the upper, and the arm and rods being located in the lower portion of the device and being part-overlaid by a casing. Arm 12, mounted on parallel equal length pivot links 17, 18 is moved by inflation of air bladder 31 against arm member 33 so that arm hook 11 urges roller 7 against fluted roller 8. The arm has adjustable stop 36 limiting hook movement. The bladder may be replaced by other actuator means. Roller 7 may abut two rollers 8. Casing 38 partcovers the arm.
Patent GB-229619-A (GB)
Title: Process for the purification of pine tars
IPC: C10G21/14
Filed: 1924-06-30
Abstract: According to the Specification as open to inspection under Sect. 91 (3) (a), resin oils, residues from the purification of turpentine oil, &c. are purified by extraction with volatile solvents, e.g. petroleum ether, gasoline, ligroine, carbon disulphide, benzol, carbon tetrachloride, trichlorethylene, or other halogen-containing carbon compounds.  The solution is run off from the dark deposits, clarified by agitation and standing or centrifuging, and heated to distil off the solvent.  The deposit may be made into cobbler's wax. Resin oils may be suitably thickened before treatment by blowing air through.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1214402-A (GB)
Title: Screw terminal
Inventor: KINDELL COLIN DAVID
IPC: H01R11/26
Filed: 1968-04-02
Abstract: 1,214,402. Making terminals. AMP Inc. 27 March, 1969 [2 April, 1968], No. 15676/68. Heading B3A. [Also in Division H2] A terminal is stamped and formed from a sheet metal blank in one piece to include a tubular screw portion 1 integral with a wire connecting portion 4 at opposed ends of the terminal. One end of the sheet metal blank is cut to have a lateral extension of frusto-conical shape and a series of ridges and grooves is cut in the extension, which is then rolled or folded up. The portion 1 is preferably tapered and its longitudinal axis may lie normal or parallel to the axis of the portion 4, which may either be formed as a ferrule to be crimped to a wire or as a tab (8) for engagement with a mating receptacle, Fig. 7 (not shown). To assist in screwing the terminal into a panel aperture, a screwdriver slot 5 may be formed in the portion 1, and the resilience of the threaded portion, due to the provision of a slot 3, holds the terminal tight in the aperture.
Patent GB-821778-A (GB)
Title: 18-oxygenated steroids
IPC: C07J75/00
Filed: 1956-05-18
Abstract: The invention comprises D 4-3,20-dioxo-11b -hydroxy-pregnene-21-oxalo acid esters having a ring C of the partial formula <FORM:0821778/IV (a)/1> in which X represents an oxo group or the grouping <FORM:0821778/IV (a)/2> , and functional derivatives thereof, such as esters, ethers, thio-esters, thioethers, thiol or thione esters, acetals, mercaptals, ketals, enol esters, enol ethers, enamines, hydrazones and semi-carbazones.  The compounds are prepared by treating the corresponding 21-unsubstituted pregnenes with an oxalic ester, e.g. methyl, ethyl, propyl or benzyl ester, in the presence of a condensing agent such as sodium methylate, ethylate or potassium t-butylate.  The racemic 21-oxalo esters can be resolved into their optical isomers, e.g. by hydrolysis to the corresponding acids, separation of the brucine or strychnine salts and re-esterification. In examples: (1) (18 --> 11b )-lactone of d,l- D 5-3,3-ethylenedioxy-11b -hydroxy - 20 - keto - pregnene - 18 - acid is condensed with dimethyl oxalate using sodium methylate, giving the (18 --> 11b )-lactone o d,l - D 5 - 3,3 - ethylenedioxy - 11b  - hydroxy-f 20 - oxo - pregnene - 18 - acid - 21 - oxalo - acid methyl ester; (2) acetylated 18,11-cyclosemiacetal of d,l - D 5 - 3,3 - ethylenedioxy - 11b  - hydroxy-18,20-dioxo-pregnene is treated as in (1) to give the acetylated 18,11-cyclosemiacetal of d,l - D 5 - 3,3 - ethylenedioxy - 11b  - hydroxy-18,20 - dioxo - pregnene - 21 - oxalo acid methyl ester.  Starting material.  The (18 --> 11b )-lactone of d,l - D 5 - 3,3 - ethylenedioxy - 11b  - hydroxy - 20 - oxo - pregnene - 18 - acid is prepared by hydrogenation of the (18 --> 11b ) - lactone of d,l - D 5,16 - 3,3 - ethylenedioxy - 11b  - hydroxy - 20- oxo pregnadiene - 18 - acid using a palladium-calcium carbonate catalyst.  Subsequent treatment with aqueous acetic acid gives the (18 --> 11b )-lactone of d,l -D 4-3,20-dioxo-11b -hydroxy - pregnene - 18 - acid. Specifications 805,603 and 821,779 also are referred to.
Patent GB-532163-A (GB)
Title: Improvements in or relating to dividing or indexing heads for machine tools
IPC: B23Q16/02
Filed: 1939-07-24
Abstract: 532,163. Dividing-engines. GHAYE, A. L. J. July 24, 1939, No. 15761/40. Divided out of 531,978. [Class 97 (iii)] [Also in Group XXII] In indexing heads of the type described in Specifications 531,978 and 532,023, to increase the range of divisions possible some of the rollers or balls are replaced by one or more slip gauges such as 5. The gauges are bevelled to leave a ridge 5c that is engaged by the clamping ring 4. The sides of the gauges are flat and parallel and the back is concave to fit the bottom of the groove 3.
Patent GB-294233-A (GB)
Title: Improvement in metallic alloys
IPC: C22C9/02
Filed: 1928-05-30
Abstract: 294,233. Barber Asphalt Co. (Assignees of Davis, A. B.). July 21, 1927, [Convention date]. Alloys.-Copper-nickel-tin alloys containing 80- 90 per cent of copper, 2-10 per cent of nickel, and 1-8 per cent of tin. are modified by the addition of 0.5 per cent or more cf silicon. One or more of the following may also be present:- 0.1-2 per cent of chromium, 0.5-2 per cent of antimony, and 0.2-5 per cent of manganese. According to the Specification as open to inspection under Sect. 91 (3) (a) the copper-nickeltin alloys above referred to are modified by the addition of one or more of the elements silicon, chromium, antimony, and manganese, generally within the proportions 0.1-3 per cent of chromium, 0.5-3 per cent of antimony, 0.2-5 per cent of manganese, and silicon in such proportions as to ensure substantial saturation. This subject-matter does not appear in the Specification as accepted.
Patent GB-588235-A (GB)
Title: Improvements in torsion bars
IPC: F16F1/14
Filed: 1945-06-21
Abstract: 588,235. Torsion springs. WOODHEAD & SONS, Ltd., J., and BERRY, W. R. June 21, 1945, No. 15814. [Class 108 (iii)] A torsion bar 1 for vehicle and other spring suspensions has its ends 2, 3 of regular polygonal sections, to engage similarly shaped holes in the supported and supporting parts, one end 2 having a different number of sides from the other end 3 to enable a differential angular adjustment of the bar in the holes to be obtained. As shown the two ends 2, 3 have ten and nine sides respectively which permit angular adjustments of four degrees or multiples thereof.
Patent GB-557933-A (GB)
Title: Improvements in or relating to drills or boring tools
IPC: B23B51/00
Filed: 1942-03-06
Abstract: 557,933. Drills. BLACK, L. G. March 6, 1942, No. 15815/41. Convention date, Dec. 7, 1940. [Class 83 (iii)] A drill has a body of non-circular cross-section and an end portion having a number of recessed or protruding facets having friction contact with the work as it is drilled. In one form the drill comprises a shank of triangular section, the flats 11 extending from edges 12 which conform to the curvature of the hole to be drilled. The end of the drill is of pyramidal form, the faces 14 separated by blunt edges 12 being at about 120 degrees to the flats 11. Grooves 16 assist the escape of cuttings. In a modification, Fig. 4, the end of the drill is formed with recessed facets 24 separated by radial edges 25 alternating with short radial ridges 26. This drill forms a flat-bottomed hole or counterbore. In another modification, Fig. 6, the drill is of square section and the end has eight recessed facets with ridges 35 at 120 degrees to the longitudinal shank edges and grooves 36. The heat developed in drilling softens the metal of the wall of the hole and facilitates a subsequent tapping operation.
Patent GB-190111-A (GB)
Title: Improved method of and apparatus for regulating centrifugal blowers and compressors
IPC: F04D27/02
Filed: 1922-06-07
Abstract: 190,111. Akt.-Ges. Brown, Boveri, et Cie. Dec. 12, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Regulating or controlling.-In order to obtain a constant terminal delivery pressure from a centrifugal compressor at a distant point of consumption an additional regulation is provided such that the effect produced is to cause a rise of the delivery pressure from the compressor as the volume increases so as to compensate for the increased distribution losses which occur with increased consumption. In the arrangement shown in Fig. 2, a regulator having the usual characteristic curve which rises towards the zero point, i.e. as consumption falls, is provided in the form of a piston 1 loaded by a spring 3 and exposed beneath the terminal compressor pressure through the pipe 2- This piston controls a valve 4 for the oil distribution, the oil-pressure so controlled acting on the upper side of the piston 1 and producing a regulation the nature of which is to cause an increase of pressure with increase of delivery volume. If the consumption is reduced and the pressure accordingly increases the control of the valve 4 allows the oil pressure to fall and the steam valve 5 to be partially closed, the fall of pressure on the oil above the piston 1 causing a still further reduction in the speed of rotation. Variation of the effect produced is obtained by adjusting the spring 3. In the arrangement shown in Fig. 4, the additional regulation is provided by means. dependent on the volume delivered. The piston 8, exposed to the delivery pressure by a pipe 7, is balanced by a piston-diaphragm 9 the opposite sides of which communicate with pipes 5, 4 to utilize the pressure difference in an intermediate cooler Z, this 'being dependent on the delivery volume. The space under the piston is exposed to the atmosphere. The slide valve 11 controlling the oil supply is thus actuated and regulation is effected in the pressure exerted by the oil passing through the pipes 12, 14 to a piston 15 which is associated with the speed-regulator 17, 18 in the control of a slot 21 actuating the steam-admission valve 20. The blow-off valve 22 is also placed under the control of the regulated oil-pressure through the pipe 24 and in order to compensate for diminished oil-pressure as the delivery pressure rises the piston 27 is placed under influence of the flatter through the pipe 28, the valve in this manner being caused to open correctly at the " hunting " limit.
Patent GB-546903-A (GB)
Title: Improvements in or relating to sealed bearings
IPC: F16C33/66
Filed: 1940-10-31
Abstract: 546,903. Magnetic separation of particles from oil. ALLIS-CHALMERS MANUFACTURING CO. Oct. 31, 1940, No. 15902. Convention date, Nov. 29, 1939. [Class 72] [Also in Groups XXXIV and XXXI] A sealed bearing comprises two axially spaced bearings for a shaft within a housing, the bearings moving in lubricant supplied through a shaft passage leading to the housing near one bearing so that old lubricant is ejected through a second passage opening into the shaft or housing close to the second bearing and at the other end of the shaft passage. As applied to the truck roller of an endless track vehicle, with wheels 8, 9 united at 13 and mounted by conical rollers 16 on a shaft 4, the wheel hubs 10 form with the shaft 4 a lubricant chamber, so that lubricant forced into tube 49 passes through a bore in the shaft, radial passage 37 and the roller bearings, while the old lubricant is ejected through radial passage 36 and the passage surrounding tube 49. This passage is closed by a spring-pressed conical valve 53 carried by the tube, whilst the shaft bore is closed by a plug 55. The inner races 17 engage shoulders 21 on the shaft whilst the outer races 15 are adjusted by the threaded members 22. The shaft bore is formed in steps of progressively decreasing diameter. A magnetic plug 57 collects loose iron particles from the chamber or the lubricant.
Patent GB-604453-A (GB)
Title: Improvements in, or relating to, extending tables
IPC: A47B5/04
Filed: 1945-06-22
Abstract: 604,453. Tables. WALLOWS (WALSALL), Ltd., HARRIS, G. H., and RILEY, C. R. June 22, 1945, No. 15923. [Classes 52(iii) and 52(v)] A leaved table top is mounted upon telescopic cantilever arms extending from a box and sloping in such a way that the outside leaf slides under the adjacent leaf as the arms are telescoped, and the whole can be pivoted, to a vertical position about pivots slidable in vertical slots formed in uprights in the box and then pushed down into the box. Each arm 16-comprises three C-shaped units 30, 31, 32, with rollers 38 on the intermediate unit 31, the front leaf 1 of the table being attached to a bracket 49 fastened on the unit 32, and the rear leaf 2 to a Z-shaped bracket 33 upon the lower flange of which is fixed the unit 30, while the intermediate leaf 3 is hingedly connected to the leaf 2 and rests at its other end on a projecting portion of the bracket 49, the leaf 2 being sufficiently thick to allow the front leaf 1 to fit under the leaf 3. To collapse the table, the intermediate leaf is first tilted by mechanical means (not shown) and the front leaf slid underneath it, units 31 sliding inside units 30 and units 32 sliding inside units 31, then pivoted about rollers 17 fixed on the outside of units 30 and pushed into the box against the action of springs 24, the rollers 17 riding in vertical slots 19. The springs 24 assist the raising action, and the table is maintained horizontally by a bracing bar 25 abutting stop plates 29.
Patent GB-618496-A (GB)
Title: Improvements in practice or indicating bombs
IPC: F42C15/20
Filed: 1942-04-21
Abstract: 618,496. Practice bombs. LINDMAN, E. I. April 21, 1942, No. 16073/43. Convention date, June 19, 1941. Divided out of 618,494. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 15, 1942.] [Class 9 (i)] The firing pin 10 and the striking plate 11 secured thereto form a movable light assembly which, on contact with water or the ground, ignite a low-sensitive primer 19 having the sensitivity of a shotgun cartridge. The primer may be a shot-gun cartridge with the pellets removed. The primer ignites a black powder or nitrous powder charge contained in a tube 18, and this charge in turn expels (or ignites and expels) a smoke - forming or light-emitting substance contained in a tube 27, this substance (or its products of combustion) being blown backwards, out of the bomb, through the open end of a tube. A wad 50 is disposed between the tubes 18 and 27. During its flight through the air, the pin 10 is held spaced from the primer by a spring 16. During transport the pin is locked in safe position by means of a clip disposed around the firing pin, this clip comprising two pieces of resilient sheet metal 21, 22, held together by a piano wire 25 which is threaded through a hole in a headed pin which passes through the pieces 21, 22, and may be secured to the aeroplane by means of an eye 26, (see Specification 618,495). The tube 18 is held in position by means of a screw 17, or other shoulder and the tube 27 by means of a splitpin 28 or a resilient hook. Smoke-forming substance may be held in a glass ampulla (shown in dotted lines). The body 1 of the bomb is made of concrete and tail vanes 7 are provided.
Patent GB-186969-A (GB)
Title: Apparatus for compressing sugar or the like
IPC: C13B50/02
Filed: 1921-06-10
Abstract: 186,969. Soc. des Raffinerie & Sucrerie Say Soc. Anon., and Chambon, L. June 10, 1921. Rotary-mould-table machines; delivery; feeding; cleaning apparatus.-Sugar is fed by a pair of intermeshing blades 16 from a hopper 15 into moulds 2 in a tablet 1 rotated intermittingly by pin-and-slot gear. Each mould is fitted with a plunger 3 having a stem 4 fitted with a roller 7 engaging stationary cams 10, 10<1> of which the cam 10<1> is carried by a member 12 adjustable vertically by a screw 13 to regulate the feed. The sugar is compressed against an abutment 18, Fig. 4, by toggles 19 operated from a cam 22, the pressed cakes being ejected above the moulds by a cam-operated lever furnished with a slot adapted to embrace a second roller 6, Fig. 3, on each stem 4. The cakes are pushed from the table 1 by a pusher 25 on to a receiving-table 24 and are delivered therefrom by a pusher 28 on to trays 34 carried along by a continuously moving conveyer 29. A shaft 40, Fig. 5, operates through cams and levers both pushers 25, 28, and also imparts intermittent movement to the receiving table 24 through pin-and-slot gear 24<11>, 24<1>. The plungers are cleaned by rotating arms 36, Fig. 6, carrying blades of rubber and kept moist by passing over a moistened spongy roller 42 mounted in a trough 38. The arms 36 sweep over the mould table and are adjustable vertically upon their shaft 39 by a screw 41.
Patent GB-612631-A (GB)
Title: Improvements connected with hose clips
IPC: F16L33/08
Filed: 1946-05-28
Abstract: 612,631. Band clips. TERRY & SONS, Ltd., H., and TERRY, C. May 28, 1946, No. 16118.- [Class 44] A band clip comprises a housing a associatec with a band d, a pro jection a<1> on the housing engaging a slot bl in ar open arch-shaped washer b seated on inwardly directed flanges a<2> or the housing, thereby having a three-point lo cation on the housing The washer co-operates with a neck on the screw and forms a closure for the housing.
Patent GB-852938-A (GB)
Title: Improvements in and relating to the reduction or prevention of dampness in walls andother permeable surfaces of building structures
Inventor: RICHARDSON BARRY ARTHUR
IPC: C04B41/70
Filed: 1958-05-20
Abstract: 852,938. Waterproofing buildings. RICHARDSON & STARLING Ltd. May 20, 1958, No. 16165/58. Class 20(2) [Also in Group VIII] To prevent dampness in walls or other permeable parts of building structures they are treated with an aqueous based water repellant preparation which diffuses inwardly to set up a water repellant layer but allows evaporation of moisture, this is allowed to dry and the wall then treated with a non-aqueous based water repellant or water proofing preparation. The non- aqueous based preparation penetrates through the water repellant layer and into the dry wall beyond. The aqueous based preparation may be solutions of sodium or potassium methyl siliconate or of the alkali metal salts of hydrocarbon-substituted silane triols. This solution is applied by brush or spray. The non-aqueous based preparation may be paraffin wax or silicone resins in organic solvents with toluene or N-butanol to prevent precipitation during storage. This solution is sprayed at 30 to 50 lbs. per sq. inch or applied by brush for small areas. Specifications 621,970 and 738,693 are referred to.
Patent GB-185530-A (GB)
Title: Improvements in disc record carrying cases
IPC: A47B81/06
Filed: 1921-06-13
Abstract: 185,530. Buckle, H. L. T., and Gramophone Co., Ltd. June 13, 1921. Contents, facilitating access to; lids.- A case for carrying disc records comprises halves 1, 2, Fig. 2, hinged at 3 and provided with two pairs of pivoted struts 9, 10 connected by cross-bars 11 so that records may be supported in the manner shown, the arrangement being such that the case can stand on its two bottom edges. A strap 12 limits the extent to which the struts can move. In a modification shown in Fig. 3, each strut consists of two pivoted members, to the lower of which are secured bars 21 which come up behind the records and raise them into a position convenient for removal. The body of the case is recessed at 22 to receive these bars. A central partition 23 is secured in the joint between the struts.