baber/WOPTO huggingface dataset:
Patent GB-380915-A (GB)
Title: Improvements in and relating to tennis rackets and the like
IPC: A63B51/12
Filed: 1931-08-21
Abstract: 380,915. Rackets. WETHERED, C. H., High Hedges, Tadworth, and MARPLES, S. A., Norton, Walpole Avenue, Chipstead, both in Surrey. Aug. 21, 1931, No. 23584. [Class 132 (ii).] The stringing of a tennis or like racket comprises a number of lengths 1 of gut, wire or other material, each anchored at one end to the frame 2, passing over intermediate guide pulleys 3 mounted in the frame, and connected at its other end to a tensioning device 4 also mounted in the frame. The frame is formed of channel section aluminium alloy, the pulleys and straining devices being rotatably mounted within the channel. Each straining device, Fig. 3, comprises a drum 4 rotatably mounted on a stud 5 projecting inwardly from one wall of the channel and provided with a spigot for engagement within a hole in the opposite wall. The drum is rotatable by means of a key inserted into a square recess 6, and is held against backward movement by means of a square or rectangular plate spring, an offset part 9 of which co-operates with radial ratchet grooves 8 formed in a flange 7 of the drum. The key and recess may be other than square and the recess may be replaced by a head to receive a spanner. The key is so designed as to prevent over-tensioning of the strings. A hole 11 is provided in the drum to receive the end of the string. The ratchet device may be replaced by lock nuts. Spare strings, winders and other tools may be carried in a recess in the handle.
Patent GB-648435-A (GB)
Title: Improvements relating to trays for use in baking operations
Inventor: LAKE FRANK
IPC: A21B3/15
Filed: 1948-09-08
Abstract: 648,435. Making aluminium and copper baking trays. RADIATION, Ltd. Sept. 8, 1948, No. 23600. [Class 83 (ii)] [Also in Group XVII] A baking tray made from a metal of high thermal conductivity is provided with a surface of high emissivity. In an embodiment the tray is made from aluminium sheet blackened by a stoved black paint or anodized to produce a surface of high thermal emissivity. Alternatively the tray may be made of copper and then blackened.
Patent GB-584052-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/46
Filed: 1944-11-27
Abstract: 584,052. Circular knitting-machines. CHELL, H., JOLLIFFE, E. N., and CHESTERTON, E. Nov. 27, 1944, No. 23620. [Class 74 (ii)] The downward movement of an axially adjustable needle cylinder 1 of a circular machine, for varying the length of the loops drawn by the needles, is effected by springs 7. Equidistantly spaced pins 4 screwed in the base of the cylinder 1 protrude through a 'carrier bevel wheel 3 and a gear wheel 6 and are bolted to a ring plate 5. Helical springs 7 supported by the pins 4 are positioned between the ring plate 5 and gear wheel 6. The cylinder is raised about a vertical bearing sleeve 2 by the end of a lever-operated quality-arm 12 which acts on the underside of the ring plate, and is lowered by the expansion of the springs when the lever is released. Nuts 9 secure the ring plate to the pins against collars 8 formed on the ends of the pins.
Patent GB-170708-A (GB)
Title: Improvements in revolving hangers for coats and other garments
IPC: A47G25/06
Filed: 1920-08-13
Abstract: 170,708. Davenport, P. M., and Davenport, T. E., (trading as Eagle Foundry Co.). Aug. 13, 1920. Hooks fixed to flat surfaces.- In multiple coat hooks of the type comprising an upper fixed portion A and a lower revolving portion B, one of the contacting faces is provided with an annular concentric recess a<3> in which engages, so as to be a good turning fit therein, a circular projection b<3> provided on the opposing face.
Patent GB-452239-A (GB)
Title: Improvements in and relating to generating hobs
IPC: B23F21/16
Filed: 1935-08-23
Abstract: 452,239. Hobbing splines. BURGESS, A. F., 10, New Court, Lincoln's Inn, London.- (Barber-Colman Co. ; River Street, Rockford, Illinois, U.S.A.) Aug. 23, 1935, No. 23695. [Class 83 (iii)] A generating hob 10 for cutting the keys 13 of a shaft 11 for securing an outer member such as a gear hub has a helical thread consisting of a series of successive finishing teeth of uniformly varying width at the pitch line, the opposite faces of the teeth having different constant lead angles. The spaces between the keys have roots b, Fig. 4, which lie on a cylinder and are thus of constant depth while the sides c d bounding these spaces taper inwardly from the shaft end and form helicoidal surfaces. Clearance slots 15 are preferably formed along the sides of the roots b. The hob is preferably single threaded and has longitudinal gashes 20 to form teeth 21 which are backed off spirally in the usual way. For generating straight sided splines, the sides f, g, of the teeth are of involute form. The thread 18 has uniform lead but opposite sides of the thread have different leads according to the form of splines to be generated. Thus the two sides c, d of the splines are generated on different pitch circles, Fig. 2, i, j, showing the pitch circles and ii, jj, the corresponding pitch cylinders of the two sides of the hob thread. The mean longitudinal pitch of the hob thread is found by dividing the pitch circle at the outer end of the work by the number of keys 13. The difference in lead of opposite sides of the hob thread is then calculated from the difference in widths of the keys at opposite ends and the number of convolutions of the hob, the two sides of the thread preferably having leads equal to the mean lead plus and minus, respectively half the above difference. Spaced clearance lugs 22 produce the grooves 15. In one form, Fig. 2, the teeth are of uniform height but in a modification the hob is uniformly tapered externally so that the teeth are of decreasing height. In operation the hob 10 is positioned as shown in Fig. 3 with the wide end of the teeth leading and the operative teeth lying along the grooves to be cut. During the timed rotation of hob and work the hob is fed in the direction k to the dotted line position, the component n being preferably a constant speed and the component o adjustable to give the required resultant. Specification 454,291 is referred to.
Patent GB-763034-A (GB)
Title: Improvements in or relating to the exhaust devices for internal combustion engines mounted on vehicles
IPC: F01N13/08
Filed: 1954-08-16
Abstract: 763,034. Motor-vehicles. INNOCENZO PASSUELLO and RASPA, V. Aug. 16, 1954 [April 13, 1954], No. 23743/54. Class 79(3). [Also in Group XXVII] An exhaust device for I.C. engines installed in land vehicles, which produces a stabilising torque acting on the vehicle when the direction of motion thereof varies, a stabilizing force increasing the adhesion of the vehicle on the surface on which the vehicle travels, and a separate force which when the vehicle is braked will cooperate to annul the inertia of the vehicle, comprises a container 1 attached at 16 to an exhaust manifold of the engine and connected by ducts 3 . . . 6 of aerfoil cross-section to a number of air intakes which are arranged symmetrically about the longitudinal centre-line of the vehicle and with an upward inclination of 10 to 15 degrees, the forward end of the device being at the lower level. Each intake comprises inner cylindrical and frusto-conical tubes 7, 10 surrounded by a jacket formed of cylindrical and frusto-conical tubes 11, 13, the tubes 10, 13 having different apex angles to provide an annular exhaust gas flow channel which decreases in cross-sectional area towards the outlet end 18. One or more frusto-conical secondary air-intake tubes 14 are arranged in the tube 7. The container 1, Fig. 2, includes coaxially-disposed cones 32, 33 forming a narrow passage for the exhaust gases, and filters 19, 19<SP>1</SP>. In a modification, the air intake 24, Fig. 7, is rotatably mounted in the jacket 23 and has blades 28 and blades 30 or helical grooves respectively on the outer and inner surfaces thereof.
Patent GB-743371-A (GB)
Title: Improvements in and relating to liquid blast electric circuit breakers
Inventor: LOVE KENNETH GEORGE
IPC: H01H33/92
Filed: 1953-08-28
Abstract: 743,371. Oil-blast switches. ENGLISH ELECTRIC CO., Ltd. Aug. 27, 1954 (Aug. 28, 1953], No. 23816/53. Class 38(5) In an oil - blast switch wherein, on separation of the contacts, a controlled flow of oil to reduce cavitation is followed by the blast proper, the flow and blast are produced by means which are independent of the arcing energy, such as a piston driven by a spring which is stressed by the closing movement of the contacts. When the movable rod contact 7 is lowered to. open the switch, the plunger 14, 20 follows it under the action of a battery of springs 17, 18, 19 until a flange 15 thereon engages the upper face of a piston 12 and, aided by a spring 13, drives the piston downwards under the retarding influence of a dashpot chamber 11 having a restricted vent 21. When contact_7 finally parts from fixed contact 6 to draw an arc, the reduced part of the piston clears, a post 22 and so allows unrestricted movement of the piston to produce a blast through contact 6 restricted by the post 20 and also round the passages 9, the piston movement being finally cushioned when the reduced portion of the piston passes below the lower end of cylinder 2. In the closing movement a flange 16 on the plunger 14 carries the piston with it. The piston may alternatively be actuated by a hydraulicpressure source.
Patent GB-636880-A (GB)
Title: Improvements in or relating to surface treatments for aluminium and aluminium alloys
IPC: C25D5/44
Filed: 1946-08-12
Abstract: A method of treating the surface of a metal consisting substantially wholly of, or comprising a major proportion of, aluminium, comprises the step of pickling the metal in a mixture of more than 90 per cent by the volume of concentrated nitric acid and less than 10 per cent by volume of concentrated hydrofluoric acid, and ascertained by test upon the particular metal to be treated, that chemical attack of the mixture upon the pure aluminium is inhibited but attack on constituents of the metal other than aluminium is not inhibited. Thus, the metal may be immersed in a quantity of concentrated nitric acid, concentrated hydrofluoric acid being added with mixing until evolution of gas commences and concentrated nitric acid then added until evolution ceases.  The acids referred to are approximately 71 to 72 per cent nitric acid and 50 per cent hydrofluoric acid. Preferably a mixture is used which is approximately 95 per cent of 67 per cent nitric acid and 5 per cent of 48 per cent hydrofluoric acid. After treating with the acid mixture the metal may then be anodized, e.g. in an aqueous solution of sodium carbonate through which alternating current may be passed, and may then be electroplated, e.g. with copper in a bath containing copper pyrophosphate and a conducting salt, or with cadmium.  On a coating of copper another metal component may be bonded by fusion, e.g. by soldering or brazing, the unbonded copper being then stripped, e.g. by dipping in concentrated nitric acid, and cadmium plating applied generally.
Patent GB-946149-A (GB)
Title: Improvements in or relating to electric lamps
Inventor: MOORE JOHN ALFRED
IPC: H01K1/24
Filed: 1961-07-03
Abstract: 946,149. Making wire articles. GENERAL ELECTRIC CO. Ltd. July 3, 1962 [July 3, 1961], No. 23955/61. Heading B3E. [Also in Division H1] The filament of a tubular incandescent lamp is supported at intervals by members 6 of tungsten wire consisting of a single turn 7 surrounding the filament and a part extending out and being bent round to bear on the inside of the tube at a number of points. The part of the support member engaging the tube may be of waveform and terminate in an out-turned stub 8. To form the support member, a rod of diameter equal to the internal diameter of the tube has an axial pin projecting from one end and two sets of radial pins in parallel planes spaced along the axis of the rod, the pins of one set being aligned with the gaps of the other set. A single turn of wire is made round the axial pin and the wire then wound alternately round the pins of the two sets, the wire being maintained at red heat during winding and subsequently heated to 1300‹ in dry hydrogen.
Patent GB-766786-A (GB)
Title: Improvements in heat exchangers
IPC: F28D15/02
Filed: 1951-10-15
Abstract: 766,786. Axial-flow fans. HUET, A. Oct. 15, 1951 [Oct. 13, 1950], No. 23982/51. Class 110 (1). [Also in Group XIII] In a heat exchanger, e.g. for air and hot gases (see Group XIII), Perkins tubes, extending in radial planes from a rotor which has its axis in the direction of flow of the heat-exchanging fluids, have longitudinal fins which are helically curved so as to impel one or both fluids if a motor drives the rotor. In one form, Fig. 1, the two fluids flow through passages A, B separated by a partition b which has a gap just large enough to accommodate the rotor c and its tubes d. In another form, Fig. 4, the fluid passages A, B are coaxial and separated by the cylindrical rotor g and cylindrical walls h extending above and below it. The tubes extend through the rotor into both fluids, and are either radial, as shown, or inclined downwardly and inwardly. The fins i<SP>1</SP>, j<SP>1</SP> in this form may be helically shaped to impel one gas only, as to impel both gases in the same or opposite directions. In a modification of the second form (Fig. 5, not shown) the longitudinal fins are inclined to the general direction of fluid flow, so as to form helical passages for the fluids. The fins may be of increasing width outwardly from the rotor axis, so that their edges meet along their whole length. The helical passages on the inside and outside of the rotor may be of the same or opposite hand. Reference has been directed by the Comptroller to Specification 665,299, [Group XIII].
Patent GB-414904-A (GB)
Title: Improvements in telephone systems
IPC: H04M1/70
Filed: 1933-08-29
Abstract: 414,904. Exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Aug. 29, 1933, No. 23983. Convention date, Aug. 29, 1932. [Class 40 (iv).] In a party-line system, the sub-station circuits are such that a party, on lifting his receiver, is connected to line by a relay operated by a condenser discharge, the condenser being normally charged over the line and the charging potential being automatically decreased or reversed, when a call is made, to prevent other parties connecting themselves. In the automatic party-line system shown in Fig. 1, the condenser 3 is normally charged over a contact of the switch hook 4 and line relay LR connected to 50 volt battery. On making a call, relay 7 of party A or B is connected across condenser 3 and connects the telephone apparatus 9, 10 to line, its armature being mechanically locked by a member 21. LR, on operating, changes over to a 32 volt battery which does not charge other condensers such as 3 sufficiently to operate the corresponding relays if another call is made. The condenser may serve as the usual condenser in series with the bell. When the party replaces his receiver, relay 12 operates over a switch hook contact, releases the locked armature of relay 7 and falls back. In the arrangement shown at C, the locked armature is released mechanically by the switch hook. In order to ensure that relay 7 operates when the receiver is lifted during a ringing period, condenser 3 may be bridged across the line in series with a choke or resistance 24, Fig. 3, the time constant of the circuit being such that the charge remains substantially constant during the application of ringing current which is superposed on the direct current. In the automatic two-party line shown in Fig. 3, the bell at A is connected to the upper wire and that at B to the lower wire, the bells being selectively rung by A.C. over transformer 44 or 45 dependent on the position of contacts 46, 47. In either position of these contacts, D.C. for charging the condensers 3 is fed over one or other of the transformer secondaries. Rectifiers 27 may be inserted in series with the relays 7 as shown in Fig. 3 or polarized relays may be used, the current from the exchange being reversed when a call is made. A method of reversing the current flow is shown in Fig. 6 in connection with a manual party line comprising a single conductor with earth return. On a call being made, LR1 pulls up and operates LR2 which connects reversed battery 29 over itself to the line and releases LR1. Instead of definitely varying the potential at the exchange, the voltage drop due to the connection of a party to the line may be relied on.
Patent GB-749391-A (GB)
Title: Improvements in or relating to synthetic lubricating oil
Filed: 1953-08-31
Abstract: A lubricating composition, suitable for use at high and low temperatures and under extreme pressures, especially for lubricating the moving parts of the turbines of prop jet and turbo-jet aircraft, comprises a major proportion of a branched chain alcohol diester of a dicarboxylic acid and minor proportions of tricresvl phosphate and of a complex ester.  The complex ester is a reaction product of compounds chosen from two or more of the following classes (subject to the proviso that at least one polyfunctional alcohol and at least one polyfunctional acid are employed):- (1) monohydric alcohols, (2) monocarboxylic acids, (3) dicarboxylic acids, (4) glycols, (5) polyhydric alcohols and (6) polycarboxylic acids.  The various types of suitable complex esters are described, some of them containing sulphur.  The branched chain alcohol diester is preferably a C6-C16 branched chain alcohol diester of sebacic or adipic acid and may be derived from oxo alcohols.  The lubricating composition may also contain oxidation inhibitors (e.g. polynuclear phenols, alkylated phenols, phenothiazine and alkylated phenothiazine), detergents (e.g. metal salts of petroleum sulphonic acids), rust inhibitors (e.g. polyhydroxy esters such as sorbitan monooleate and pentaerythitol monooleate), corrosion inhibitors (e.g. lecithin), foam depressants (e.g. silicone fluids), mineral oil, viscosity index improvers, pour point depressants and sludge dispersants.  In the examples, lubricating compositions are described which consist of (a) di-C7-oxo adipate, di-C8-oxo adipate, di-C13 oxo adipate or di-2-ethylhexyl sebacate, (b) tricresyl phosphate and (c) a complex ester which is the reaction product of 2 mols of a half ester of sebacic acid and 2-ethylhexanol with 1 mol of a polyethylene glycol having a molecular weight of about 200.  Tests are described in which the lubricating compositions of the examples are compared with similar compositions from which one or other of the ingredients has been omitted.
Patent GB-1391878-A (GB)
Title: Interpolymers useful as binding agents for nonwoven fibrous products
IPC: D04H1/64
Filed: 1973-05-21
Abstract: 1391878 Non woven fabric MONSANTO CO 21 May 1973 [22 May 1972 2 Feb 1973] 24056/73 Headings D1R and D2B [Also in Division C3] Binding agents for non-woven fibrous materials consist of an interpolymer made from (a) ethylene (preferably at least 5%) (b) vinyl chloride (at least 30%) (c) acrylamide or a mixture thereof with methacrylamide, an N- alkyl (meth) acrylamide, an unsaturated carboxylic acid, salt, alkyl ester or hydroxyalkyl ester thereof or an (meth) acrylyl amide of an aminoalkanoic acid (0.1-10%) and (d) an N-(C 1 -C 10 ) alkoxymethyl (meth) acrylamide (0.1-10%). They are prepared by emulsion technique and in Examples (c) is acrylamide or a mixture with N-methylacrylamide, N- methylmethacrylamide, maleic acid, 2-hydroxyethyl fumaric acid or aconitic acid. The products may be hydrolytically modified by treatment with alkali or acid and cross link on heating. In an example a non-woven cellulose nylon fibre fabric is immersed in a latex of such a copolymer, dried and calendered. The non-woven fabric may be formed from natural and/or synthetic fibres.
Patent GB-461233-A (GB)
Title: Improvements in or relating to cartridge fuses
IPC: H01H85/20
Filed: 1936-09-03
Abstract: 461,233. Fusible cut-outs. WHITELEY, E., and WO-BAR MANUFACTURING CO., Ltd. Sept. 3, 1936, No. 24098. [Class 38 (i)] A fuse cartridge consists of a rod-like body 1 of insulating- material having communicating passages 1b, 1c in which lies a fuse wire 2, the ends of the wire being associated with a contact ring 3 and an end cap 4 either by clamping the bent ends as shown or by soldering. The rod may be formed with an enlarged integral or screwedon head 1a determining the correct insertion of the cartridge in a fuse box, for example, as described in Specification 457,945. Indication of the blowing of the fuse may be given by discoloration of paper closing the end of a small transverse hole communicating with passage 1b. Different diameters of the body 1 may characterize fuses of different ratings.
Patent GB-855926-A (GB)
Title: Improvements in and relating to the control of radiant electric heating devices suchas hot plates
Inventor: WALTON GORDON HERBERT FRANCIS
IPC: H05B1/02
Filed: 1956-08-07
Abstract: 855,926. Thermal switches. DIAMOND H SWITCHES Ltd. Aug. 1, 1957 [Aug. 7, 1956], No. 24141/56. Class 38 (5). [Also in Groups XI and XIII] In a thermal switch 25 constructed as in Specification 831,527, the axial position of the fulcrum member 27 of the operating lever 26 is axially adjustable. A manuallyoperable adjusting-spindle 31 carries a face cam 32 engaging a follower 33 on the fulcrum member 27. The slope of the face earn is non-linear and has a gentler slope at 220‹ to 280‹ F. to afford greater sensitivity of control in this range. Specifications 655,989, 800,773, 800,775 and 831,527 also are referred to.
Patent GB-501816-A (GB)
Title: Improvements in or relating to cathode ray apparatus
IPC: H04N5/74
Filed: 1937-09-03
Abstract: 501,816. Cathode - ray tubes; light valves. BOSCH, F. J. G. VAN DEN. Sept. 3, 1937, No. 24155. [Classes 39 (i) and 40 (iii)] A cathode-ray produced by a gun 11 scans a screen 12 capable of developing under the bombardment of the scanning beam localized static charges which affect the orientation of a multitude of soft iron particles or filings suspended in a clear liquid so as to permit the passage of light between the particles on to a larger screen. The screen 12 may be the ordinary zinc sulphide screen and the liquid, preferably a light oil such as paraffin, fills a disc-like container 15 clipped on to the end of the tube. Light from a powerful source 14 projects on to a further screen an enlarged and intensified replica of the charge image built up on the screen 12 by the modulated scanning ray.
Patent GB-1530441-A (GB)
Title: Impermeable ecological barrier and process of making same from reconstituted shale
IPC: E02B3/12
Filed: 1977-06-09
Abstract: 1530441 Forming barrier walls in permeable strata A G AVEDISIAN 9 June 1977 [14 June 1976] 24156/77 Heading E1H A process for forming an impermeable barrier along a wall of a hole in the ground comprises the steps of crushing shale mined from the Upper Ordovician strata to produce a readily compactible aggregate, mixing water with the crushed shale to provide a wetted aggregate which is spread along the wall, and secondarily crushing and mixing said wetted aggregate in place against said wall to compact it into a substantially solid impermeable state.
Patent GB-280675-A (GB)
Title: Improvements in or relating to wringers, mangles and ironing machines
IPC: D06F45/18
Filed: 1926-09-30
Abstract: 280,675. Sheppee Motor Co., Ltd., and Jowitt, S. G. Sept. 30, 1926. Reversing-gearing.-In a power-driven mangle &c. in which the bottom roller spindle 14 is selectively driven in either direction from a vertical drive-shaft 4 through the bevel train 5, 10 or 15, 10 the clutch member 6 which is actuated by an eccentric 8 and handle 11 is restored to neutral position on release of the handle by springs 29, 30. The springs may be replaced by a single external or internal spring which may be secured at one end to the gear casing and at the other to a pin on the lever or its hub.