baber/WOPTO huggingface dataset:
Patent GB-257634-A (GB)
Title: Improvements in apparatus for testing the strength of bar-shaped and thread-like test pieces
IPC: G01N33/36
Filed: 1926-08-31
Abstract: 257,634. Metallbearbeitung Ges. Aug. 31, 1925, [Convention date]. Testing physical qualities of materials. - Comprises apparatus for testing specimens of small cross-section such as fibres and consists in effecting the loading by allowing a weight of chain or cord, which chain is wound and unwound on a drum, to act upon a scale beam, the elongation of the fibre being compensated and indicated by the movement of one of the clamps. The scale beam a is pivoted on a knife edge and has suspended from one arm a clamp b securing the upper end of a thread-like specimen c the lower end of which is secured in a clamp f carried by a screwed rod g which is slid vertically without rotation by a nut formed in one with a drum h adapted to be turned by a cord passing to a weight i. The drum is normally acted upon by a brake k. The other arm of the beam a is acted upon by a weight of chain d wound on or off a drum e. Upon the scale beam moving from normal an electrical contact m is made releasing the brake k and allowing the drum h to turn and the rod g to move down and take up the elongation of the specimen. The chain is passed around pulleys to a recording pen o which marks on a drum n in one with the drum h. The rotation of the drum n corresponds to elongation of the specimen.
Patent GB-1154245-A (GB)
Title: New Azetidine Compounds and methods for their production
Inventor: CAVALLA JOHN FREDERICK
IPC: C07D205/04
Filed: 1966-05-13
Abstract: 1,154,245. 3-Aryl-3-alkyl azetidines. PARKE, DAVIS & CO. 18 April, 1967 [13 May, 1967], No. 21491/66. Heading C2C. The invention comprises azetidines of the formula and the acid addition salts and phenotates thereof, where R is hydrogen, a C 1-4  alkyl or a C 1-4  alkanoyl group, R<SP>1</SP> is a propyl or butyl group and Z is a methyl or phenethyl group. The compounds may be prepared by reacting a compound of the formula with a methylating or phenethylating agent, e.g. a methyl halide, sulphate or p-toluene sulphonate or a phenethyl halide. The compounds in which R is hydrogen may also be made by treating the compounds in which R is a C 1-4  alkyl group with an acidic reagent capable of splitting the ether linkage, e.g., HI, HBr, AlCl 3 , AlBr 3 , BBr 3  or pyridine hydrochloride. The esters, compounds in which R is alkanoyl, can also be obtained by esterifying the hydroxy compounds, e.g. by using the appropriate acid, anhydride or acid halide. The compounds in which R is alkyl are also obtained by reduction, using LiAlH 4 , of the corresponding 3-(m-alkoxylphenyl) - 3 - (propyl or butyl) - 2 - azetidinones. The acid additions salts are obtained by treatment with the appropriate acid, e.g., HCl, HBr, H 2 SO 4 , H 3 PO 4 , acetic, succinic, citric, maleic or panioic acids. The free hydroxy compounds form salts with bases, e.g., NaOH, K 2 CO 3  and strong amines. The 2-azetidinone reactants are obtained by reacting an alkyl ester of 2-cyano-2-(m-alkoxyphenyl) acetic acid with a propyl or butyl halide, hydrogenating the resulting alkyl ester of a 2-cyano-2-(m-alkoxyphenyl) alkanoic acid to the corresponding ester of a 2-amino methyl- 2-(m-alkoxyphenyl) alkanoic acid and cyclizing this ester by treatment with methylmagnesium iodide. The 3-aryl-3-alkyl azetidines are analgesic agents which may administered orally or parenterally.
Patent GB-1112072-A (GB)
Title: A filter for liquid
IPC: B01D24/48
Filed: 1965-05-20
Abstract: 1,112,072. Automatic cleaning of "sand" filters. UNION TANK CAR CO. 20 May, 1965 [27 May, 1964], No. 21492/65. Heading B1D. A filter for liquid has a filtered-liquid storage chamber connected for two-way communication by a valved pipe with the outlet side of its filter chamber, the two chambers being so disposed that filtered liquid can flow by gravity from the storage chamber to the filter chamber, an unfiltered-liquid inlet and a normally-closed backwash discharge outlet connected to the inlet side of the filter chamber, a service outlet communicating with the outlet side of the filter chamber, and a source of gas pressure (e.g. air) connected to the outlet side of the filter chamber by a valveless gas line; liquid is prevented from entering the pressure source, in use, by the positioning of the source, the pressure source is operable to exert sufficient pressure to force gas into the outlet and inlet sides of the filter chamber during a gas scouring cycle, means are provided for opening the backwash discharge outlet to allow liquid from the storage chamber to flow through it, and means are provided whereby the valve in the pipe is closed and the pressure source is actuated during the gas scouring cycle, and whereby the valve is opened to allow passage of liquid from the storage chamber to the filter chamber during a backwash cycle. Fig. 3 shows the "air-scour" phase, but during normal filtration, unfiltered liquid flowing up pipe 46 and over weir 40 reaches inlet chamber 26 via conduit 30, valve 62 being closed. Filtered liquid passes upward through normally-open valve 70 into backwash storage tank 11 and out at 50. On clogging of the filter bed 12, liquid rising in a pipe 54 contacts probe 58 of switch 56. Thereupon valve 62 is opened quickly, valve 70 is closed slowly, and a blower 74 is switched on for a predetermined period. Air passed upwards through the filter bed is discharged along conduits 30 and 34 and up vent pipe 75. When the blower 74 shuts off, valve 70 is opened, and because valve 62 is still open (to drain), tank 11 empties through pipe 48 and upwards through the filter bed, the liquid and foreign matter being discharged along conduits 30 and 34. When the liquid level in tank 11 falls to the lower end of a probe 68 in a pipe 64, a switch 66 operates to close valve 62: the valves being now in their normal positions and the blower not operating, normal filtration resumes automatically. The blower pressure may be chosen to be less than the normal pressure in underdrain compartment 28, in which case the blower may be connected to the underdrain compartments of a plurality of filters. It is switched on (as described), by any filter needing cleaning, and thereafter the air scour takes place only in that filter, the remaining filters continuing their normal operation.
Patent GB-614664-A (GB)
Title: Improvements relating to fluid controlling valves
IPC: F16K1/48
Filed: 1946-07-18
Abstract: 614,664. Manually-actuated valves. ELLISON, Ltd., G., and MORGAN, W. A. July 18, 1946, No. 21495. [Class 135] A hydraulic &c. valve, in which a rotary screw-threaded member h, Fig. 1, co-operating with a stationary part d carries a spring-loaded closure member q, is actuated by a coaxial non- reciprocating spindle e in tongue and slot connection with the screw-threaded member. As shown, two similar valves mounted in a casing c are interlocked by recessed discs z, Fig. 2, so that the valves may be alternately opened to connect either a fluid supply port v or an exhaust port w to a port x communicating with a fluid pressure operated device. Friction rings u between the closure members and the screw-threaded members ensure rotation of the closure members relative to their seats during operation of the valves. The members hare substantially balanced by fluid pressure by the provision of passages s and longitudinal grooves in the members h.
Patent GB-244052-A (GB)
Title: Improvements in swash plates or slants for crankless engines
IPC: F16H23/10
Filed: 1925-08-27
Abstract: 244,052. Crankless Engines, Ltd. Dec. 5, 1924, [Convention date]. Engines with main shaft parallel to axis of cylinder; driving-gear.- In swash-plate engines of the kind described in Specification 118,098, the swash plate comprises plane sides 11, 12 and an annular rim 1 with turned inner and outer peripheries 13, 14 of cylindrical form coaxial with the shaft 4, which rim is bolted between webs 2, 3 which are turned about axes inclined to the shaft and keyed thereto between a collar 7 and a nut 8. The webs have annular projections engaging recesses in the rim, and spherical bosses 2<c>, 3<c> adjacent the keys. In the construction shown in Fig. 4, the webs 2, 3 and the internal surface 14 of the rim 1 are turned about the same axis. The spherical bosses are hollow; the webs 2, 3 and rim 1 are secured by through bolts. In a modification of Fig. 4, the webs 2, 3 comprise circular plates with reinforced, hollow, eccentric, circular bosses. In further modifications, the bosses are made as truncated cones which may be separate parts and solid and act as balance weights, or may be light with internal, conical recesses and flanges for securing to flanges on the main shaft. In the construction shown in Fig. 11 the outer flanges of the webs 2, 3 cover the lateral faces of the rim 1 and constitute the working faces. The rim 1 has a separate band 1<a> which may be of wrought steel welded to the webs 2, 3, the rim 1 being of iron, steel, or lead subsequently cast in position while the swashplate is rotated. In a modification of Fig. 11, the flanges of webs 2, 3 are brought into contact, and external annuli secured thereto by screws and/or welding. In the construction shown in Fig. 13, the webs have spherical bosses, and the outer edges are turned concave at 2g, 3g and are normal to surfaces 2<e>, 2<i>, 3e, 3d respectively. The rim 1 is clamped between the webs 2, 3; screws 35, 36 supplement the nut. Where possible, the webs 2, 3 in the various constructions may have internal cylindrical or conical bosses 37, 38. The swash-plate may have manholes, hand holes, &c., and may contain lubricant, and the two sides thereof may be differently designed.
Patent GB-1345850-A (GB)
Title: Laminate of aluminium and a resin and its use in manufacture of printing plates
IPC: G03F7/11
Filed: 1972-05-09
Abstract: 1345850 Coating aluminium W R GRACE & CO 9 May 1972 [13 May 1971] 21544/72 Heading B2E [Also in Division G2] A laminate comprises a sheet of aluminium or an alloy containing at least 50wt% thereof having on one or both sides a conversion coating for the sheet and a resin layer over the conversion coating, which resin comprises a copolymer of vinyl chloride and vinyl acetate. The conversion coating is produced by spraying or dipping with an acid chromate or fluoride solution, and preferably comprises a permeable mixed oxide-chromate coating. The resin may be applied preferably by dipping as a solution or dispersion of a vinyl chloride/ vinyl acetate copolymer with or without a third copolymerised monomer such as a maleic anhydride derivative. The resin preferably includes dyes to provide a gold colour, such as a mixture of red and yellow dyes. The thickness of the resin layer may be controlled by a draw bar. After baking the resin an additional layer of a photohardenable material may be applied to the resin, which coat comprises a polyene component (a compound or compounds having at least two non-aromatic carbon-carbon multiple bonds per molecule) and a polythiol component. Preferably the polyene component comprises a mixture of where R is the group, and the polythiol component is pentaerithritol tetrakis-(#-mercaptopropionate). These components are mixed with benzophenone accelerator and coated onto the resin using a doctor blade. In use the photohardenable coat is exposed to UV light shone through a photographic transparency. Unexposed coating is washed off leaving a hardened layer having the image of a transparency. The coated sheet thus treated is used as a flexible printing block.
Patent GB-1170039-A (GB)
Title: Improvements relating to Filter Presses
IPC: B01D25/176
Filed: 1968-05-07
Abstract: 1,170,039. Filter press plates. POLYSIUS G.m.b.H. 7 May, 1968 [19 May, 1967], No. 21551/68. Heading B1D. A filter press plate with a central feed aperture (Fig. 1, not shown) has an array of projections 4a, 4b, extending outwards from its web 2 to level with its peripheral frame (1), projections on adjacent plates abutting when the press is closed, to prevent webs 2 deforming if different pressures exist in adjacent chambers. Projections may be integral with the webs 2, as in Fig. 2 (not shown), or may screw together as a nut and bolt through web 2. Washers 11 ensure that projections project the correct distance from the web, and grooves 5 receive the filter cloths 6, retained by elastic rings 7.
Patent GB-215590-A (GB)
Abstract: 215,590. MacLeod, J. May 28, 1923. Transmission mechanism ; arrangement of bearings.-The rotor 3, gear pinions 4 and shaft 2 are made in one piece and supported by thrust bearings 5, 6 on either of the pinions and a bearing 8 which permits axial movement of the shaft on the side of the rotor remote from the pinions. The gears are provided' with oil under pressure by a toothed-gear pump to which is attached a speed governor as described in Specification 203,982, [Class 57, Governors &c.]. Packing rings 7<1>, 8<1> are provided on either side of the rotor.
Patent GB-614682-A (GB)
Title: Automatic driving device or chuck for machine tools
IPC: B23B31/12
Filed: 1946-07-19
Abstract: 614,682. Chucks. DUBIED & CIE SOC. ANON., E. July 19, 1946, No. 21696. Convention date, Aug. 28, 1945. [Class 83 (iii)] In an automatic driving device or chuck having at least two gripping jaws, adjusting members attached to the gripping jaws lie against an axially movable conical member which is moved manually against spring resistance to open the jaws so that, on retraction of the conical member, the toothed clamping surfaces of the jaws grip the work independently under the influence of centrifugal force and the resistance to the turning action. The toothed jaws 11 carried on pivots 12 are actuated by weights 15 assisted by springs 18. Adjusting screws 17 contact a conical member 6 which is advanced against an annular spring, to open the jaws, by a rod sliding within the spindle and bearing a manually-operated yoke. In a modification, the jaws act as their own weights and are adjusted by screws passing through them which have conical or eccentric ends bearing on a sliding guide ring having two inner concentric conical surfaces.
Patent GB-632256-A (GB)
Title: Electrically conducting films and method of application
IPC: H01B1/00
Filed: 1947-08-07
Abstract: 632,256. Electric heating resistance coatings. LIBBEY-OWENS-FORD GLASS CO. Aug. 7, 1947, No. 21719. Convention date, Oct. 5, 1942. Drawings to Specification. [Class 39(iii)] [Also in Group XXIII] Clear, transparent, electrically-conducting coatings are formed on vitreous substances, e.g. glass sheets, by heating them approximately to their softening point and then treating them with a tin chloride. The resultant film consists substantially of tin oxide and may be of the order of a half wave length of light in thickness. In particular examples the tin chloride may be applied as a liquid including anhydrous stannic chloride containing an excess of chloride dissolved therein and alcohol, the heated glass sheets being dipped into this liquid. Glass sheets so coated may be used as windshields or other windows, the sheets being provided with spaced electrodes in contact with the coating for supplying de-icing current thereto.
Patent GB-627983-A (GB)
Title: Improvements in optical projection systems
IPC: H04N5/74
Filed: 1946-07-20
Abstract: 627,983. Optical projection systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 20, 1946, No. 21725. Convention date, July 20, 1945. [Class 97 (i)] [Also in Group XL (a)] In an optical projection system comprising a cathode-ray tube, a spherical reflector for projecting images formed on the screen of said tube and a correcting plate disposed in the light path from the reflector, a positioning member is provided which contacts the reflecting surface at at least three points so that the centre of curvature of the reflector lies on the optical axis of the correcting plate. As applied to a system for projection of television images comprising a cathode-ray tube 10, a concave mirror 18 and a figured plate 26, the positioning member consists of a cylindrical shell 36, between one end of which and a support 78 the mirror is clamped so that its optical axis is aligned with the cylinder axis. The figured plate 26 is supported on an inwardly projecting flange 44 at the other end of the shell 36, a shoulder 42 on this flange being so positioned that the centre of the plate lies on the cylinder axis; the height of the shell 36 is such that the centre of the plate lies at the centre of curvature of the concave mirror 18. The neck 31 of the cathode-ray tube is accommodated in a central aperture provided in the plate 26 and the tube surface 12 rests on a ring 33 carried by a bracket 51 on a rod 52 which may be axially moved by adjustment of the screw 53 by means of which it is secured to the shell 36. Diametrically opposite the bracket 51 is a bracket 63 having a slot to receive the end 72 of an axially movable rod 74 carried by the shell. Thus, when the shell 36 is held fast, the rods may be adjusted to vary the position of the tube face 12 in relation to the mirror 18 for focusing purposes. Specification 537,738 is referred to.
Patent GB-614718-A (GB)
Title: Improvements in latching devices
IPC: E05B65/00
Filed: 1946-07-22
Abstract: 614,718. Gates. AGRICULTURAL SUPPLIES (CAMBRIDGE), Ltd., SMITH, M. BOND-, and HANCOCK, A. July 22, 1946, No. 21810. [Class 45] [Also in Group XXV] A gate, particularly for use in cattle pens, is formed of vertical metal tubes 1 and has mounted on it a stop bar 3 extending beyond the opening edge of the gate to co-operate with a fixed part of the pen, e.g. a post 2, and a movable latch plate 8 biased to co-operate with the post 2 to prevent opening. As shown the latch is pivoted on a bolt 4 so as to be biased by gravity to the latching position, and is lifted by pressing on a handle 7.
Patent GB-1294144-A (GB)
Title: Magnetic compass or like indicating instrument
Inventor: CARROLL DOUGLAS VICTOR
IPC: G01C17/08
Filed: 1970-05-06
Abstract: 1294144 Magnetic compass; Indicating apparatus TMC (CANADA) Ltd 6 May 1970 [16 May 1969] 21851/70 Headings G1F G1J An indicating instrument, such as a magnetic compass, comprising an indicating member 30 supported within a liquid 14 in a spherical cavity 11 is characterized by a mercury column 21 which is located in a recess 22 of the indicating member and which acts to maintain the indicating member vertical immaterial of the orientation of the housing 10 defining the cavity 11. The indicating member 30, which may be defined by a pair of frusto-conical surfaces and have indicating inscriptions thereon, may house a bar magnet 32. The recess 22 in which the mercury is located may be tubular and provided with a constricted portion 38 adjacent its mouth, the mouth being in contact with a mercury pool 20 at the base of the cavity 11.
Patent GB-462229-A (GB)
Title: Annular ball bearing
IPC: G04B31/012
Filed: 1935-08-01
Abstract: 462,229. Ball bearings. ANNEN, R. Aug. 1, 1935, No. 21852. [Class 12 (i)] In an annular step or thrust ball-bearing made entirely of stamped sheet metal and particularly adapted for manufacture in small sizes for use in watches and similar mechanisms, comprising a cylindrical portion adapted to be pressed into an aperture in a supporting plate, a lower race ring formed integral with or carried by said cylindrical portion in such a position that said lower race ring is not distorted by the lateral pressure on the cylindrical portion caused by its mounting in said aperture, and an upper race ring, the axial thrust of the shaft is transmitted resiliently to said upper race ring. The lower race ring 22, Fig. 1, is integral with a flanged cylindrical portion 21 mounted in an aperture in a plate 1 and closed by a washer 7 to exclude dirt and retain lubricant; a neck 5 on the shaft 4 engages the upper race ring 6 which is of thin sheet steel and is somewhat resilient. In a modification, Fig. 2, the lower race ring is curved upwardly at 23 and the upper race ring 6 is concave on the underside. In a modification, Fig. 3, the lower race ring 7a is pressed into the cylindrical portion 21 which forms a cover 2 ; the upper race ring 6 is provided with openings 8 to increase its resilience. In a modification, Fig. 5, the lower race ring is conically extended at 24 and a washer 9 is provided ; in this case either the upper race ring 6 or the washer 9 or both is resilient ; the race ring 6 is cut away to increase its resilience. In a further modification, the washer serves as a cover, and the cylindrical portion has lugs, some of which are bent outwardly to secure the portion in the plate, and others are bent inwardly to retain the parts.
Patent GB-698585-A (GB)
Title: Improvements in and relating to asymmetrically conductive devices
IPC: H01L29/00
Filed: 1951-09-18
Abstract: 698,585. Rectifiers. BRITISH THOMSONHOUSTON CO., Ltd. Sept. 18, 1951 [Sept. 27, 1950], No. 21883/51. Class 37. A rectifier comprises a stack of germanium or other semi - conducting pellets made, e.g. as described in Specification 718,265, alternating with conducting material. The latter may be in the form of a plating of ferromagnetic material 21, Fig. 3, covering about half the surface of each pellet and a magnetic field can be used to assist the correct orientation of the pellets during assembly. Alternatively metal plates 14 ... 16, Fig. 2, which are soldered to one pellet and provide the limited-area contact to another are used. In another form, Fig. 1 (not shown), the metal plates are flat on both sides. The correct pressure between semiconductors and counter-electrodes is ensured by springs 12.
Patent GB-916948-A (GB)
Title: Improvements in methods of applying a rectifying connection to a semiconductor body
IPC: C30B31/04
Filed: 1959-06-26
Abstract: 916,948. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 26, 1959 [June 27, 1958; Aug. 27, 1958], No. 21957/59. Class 37. A method of making a junction with a semiconductor body comprises applying to the body a metal which is neither donor nor acceptor, and in which the semi-conductor is soluble, heating to form a pool of the metal and dissolved semi-conductor, exposing the pool to an atmosphere containing a donor or acceptor and cooling to solidify the pool. In one embodiment lead is placed on top of a 5 ohm cm. P-type germanium body and heated to 700‹ C. whereupon it melts and dissolves the surface germanium. During the heating the acceptor impurity in the body diffuses into the lead to leave the germanium immediately beneath the lead substantially free of acceptors and hence of intrinsic resistivity. After reducing the temperature to 500‹ C. to partially recrystallize the germanium, arsenic vapour is introduced which rapidly dissolves in the lead. When the assembly is subsequently cooled the recrystallizing material therefore contains an excess of arsenic and is N-type. In a method of making an NPN transistor a P-type layer is produced by diffusion of acceptors into one surface of an N-type body including both donors and acceptors. Subsequently lead is placed on the P-type layer and heated while maintained in a donor, e.g. arsenic-containing, atmosphere to partially dissolve the semi-conductor. The donors preferentially diffuse outwards into the molten lead to leave a P-type layer forming an extension of the layer formed by diffusion. Simultaneously donor impurity from the atmosphere dissolves in the lead so that on recrystallization an N-type layer forms above the P-type layer.