baber/WOPTO huggingface dataset:
Patent GB-801516-A (GB)
Title: Improvements in position measuring transformer
IPC: B23Q17/22
Filed: 1956-04-30
Abstract: 801,516. Transformers. FARRAND OPTICAL CO., Inc. April 30, 1956 [May 18, 1955], No. 13275/56. Class 38 (2). A transformer which forms a position determining device comprises two relatively movable closely-positioned supports each provided with a winding formed by an array of series-connected strip conductors. As shown in Figs. 1 and 7, each array extends around circular superposed supports 9, 11, current flowing up and down alternate conductors 6. With an alternating current applied to one array (primary) induced voltages are produced in the other (secondary) conductors which add together to produce the output voltage. On relative rotation the output voltage varies cyclically, the distance between centres of two adjacent conductors representing half a cycle. Thus positions intermediate of two alternate conductors may be determined by examination of the output voltage. Modifications are described designed to overcome difficulties due to (a) extraneous induction due to the overall circulatory current, (b) the effect of harmonics, (c) mechanical asymmetry. In one arrangement (Fig. 4, not shown) the circulatory current flows in opposite directions in two opposite halves. In Fig. 5 the secondary comprises ninety-six conductors 44 arranged in groups of four which are connected alternately into two windings, the direction of current flow in alternate groups of each winding being reversed. Such a secondary is combined with a primary of one hundred and eight conductors as in Fig. 1 whose average thickness and spacing are a and b respectively, the groups of the secondary being spaced on centres by an integral multiple of (a + b)/2. The spacing apart of the members of each group is arranged to minimize harmonic effects and the ratios of thickness to spacing of the conductors in both the primary and secondary are chosen to this end, for example if a/b + b = 2/3 the third harmonic is suppressed. Embodiments are described of similar arrangements for linear relative movement and of these the embodiments of Figs. 11 and 12 (not shown) provide arrangements whereby the effect of harmonics is minimized by varying the separation of the conductors. In Fig. 13 secondary conductors 156 are inclined to primary conductors at an angle to minimize harmonics. Fig. 15 shows a perspective view of a linear transformer, conductors 103, 104, 105 and 106 being deposits of metal (e.g. silver) produced by a photo etching process on glass plates 99, 108.
Patent GB-639759-A (GB)
Title: Improvements in straps for wristlet watches and the like
IPC: A44C5/16
Filed: 1948-05-14
Abstract: 639,759. Attaching articles to the person. GRUNBERGER, K. May 14, 1948, No. 13295. [Class 43] In a watch or like bracelet of the type comprising two cords, each of which is looped through an eye 2 or the like on the watch 1 and doubled back on itself, the free ends of the cords being provided with fastening means or being attached to straps carrying fastening means, the two lengths of each doubled-back cord are held parallel to one another by a ring 6, each cord being in two parts 3, 4, the abutting ends 3a, 4a of which are releasably joined together and so positioned that the join is covered by the ring 6 when the latter is slid up towards the watch. The parts 3, 4 may be joined by a wire clip 5.
Patent GB-456344-A (GB)
Title: Improvements in and relating to base-exchanging material for bringing about ion exchanges
IPC: C01B33/46
Filed: 1935-05-03
Abstract: The minerals immediately adjoining the coal deposits in the Faroe islands, or minerals of similar chemical composition and physical properties, are treated in a comminuted state with an alkaline compound such as an alkali hydroxide, soda, potash, or waterglass to obtain a substance having base-exchanging properties.  A solution of the alkali may be used, or the pulverized or granular mineral may be admixed with the solid alkali; in the latter case the base-exchanging properties are developed only when the mixture is soaked in water. The mineral may be dried before treatment, and also after treatment when necessary.
Patent GB-611654-A (GB)
Title: Pumps, motors, compressors, engines, gears, and the like, of the rotary type
IPC: F01C3/02
Filed: 1946-05-03
Abstract: 611,654. Rotary pumps or engines. HUGHES, C. May 3, 1946, No. 13446. [Class 110 (ii)] The pump (or engine) has rotary or oscillatory vanes 2, carried in the periphery of a rotor 22, an inclined Z-section shaft 8, connecting together each pair of vanes, a forked shaft 3 causing rotation of the rotor 22 about the axis of a shaft 28, and rotation of each vane about its own axis. The prongs 4, 5 of the shaft 3 have a wristpin effect on the shaft 8. Segmental, fixed abutments 27, separating inlet and outlet ports leading to the pumping chambers, or grooves, co-act with slots 11 in the vanes. A cranked Z-section shaft couples together a pair of vanes at right-angles to those shown in Fig. 1, and is driven by a shaft 9, journalled within the hollow shaft 3. Two liquid-supply rings 18 connect inlets 20 with holes 21 leading to the working chamber swept by the vanes 2. The delivery zones are connected to an annular chamber 24. Clearances are provided between the end faces of the rotor and the casing, and these may be adjusted by means of a carrier ring 25 and two screwed rings 26.
Patent GB-134678-A (GB)
IPC: C14B1/00
Abstract: 134,678. Robinson, J. Dec. 19, 1918. Cylindrical - cutter type. - Relates to the adjustment of cutter in skiving- machines of the cylindrical cutter type. The cutter 1 is fed in the direction of its axis 2 by a sleeve 3 that abuts against the cuttersupporting flange 5 and is carried by a collar 4 secured to a screw spindle 6 traversed by a nut 7. The collar 4 may be loosened to allow the sleeve 3 and cutter to be withdrawn for replacement of cutter. The lower feed-roll 9 is adapted to be tilted about its supporting spindle 11 by a screw 14 serving to rock the lever 13 against the action of a spring 17. The spindle 11 is mounted in a bracket adapted to be swung about an axis 22 by an operating screw 24 against the action of a spring 25. A modified mounting of the lower feed-roll is indicated in the Provisional Specification. The upper feed-roll 26 is supported in a bracket 29 pivoted at 30 to a vertically adjustable slide 31, the angular position of the bracket 29 being determined by a screw 34 passing through a cylindrical nut in the bracket 29 and into a sleeve 35 carried by the slide 31. A screw 36 engages an annular groove in the screw 34 to fix the position of the latter.
Patent GB-1526605-A (GB)
Title: Lift chair
IPC: A47C3/025
Filed: 1977-03-31
Abstract: 1526605 Lift chairs E J GAFFNEY 31 March 1977 [16 April 1976] 13513/77 Heading A4J In a lift chair an extensible and retractable power operated device 24 is provided between a seat 11 and a lift base 12 to raise and lower the seat, there being an accessory base provided on the seat which engage the floor before the power operated device is fully retracted so that the lift base 12 is raised from the floor on full retraction of the power operated device. The accessory base may be a wheeled base, as shown, or a rocking base, Fig. 1 (not shown).
Patent GB-153029-A (GB)
Title: Improvements in the driving of reciprocating machinery
IPC: F16H19/02
Filed: 1917-09-20
Abstract: 153,029. White, J. W. Sept. 20, 1917. Planing.-The reciprocating table of a planing &c. machine is driven by a chain 1 of the inverted tooth or Morse type passing round a pair of toothed wheels 2, both of which may be driven. The chain is connected to the table 5 by brackets 4, or it may have additional teeth engaging rack teeth on the table against which it is held by jockey wheels. One of the pulleys is adjustable to take up slack. As shown, the pulley 2 is reciprocated by a crank-pin 3.
Patent GB-669235-A (GB)
Title: Machine tool load control
Inventor: JR FREDERICK FINDLAY ROHRER
IPC: B23Q5/10
Filed: 1950-05-31
Abstract: 669,235. Driving rotary spindles. HEPPENSTALL CO. May 31, 1950, No. 13571/50. Class 83 (iii). A machine-tool, such as a lathe, having a chuck 2 rotated by an electric motor 16, has a meter 26 to indicate the load on the motor in terms of percentage of its full load and means, such as a rheostat 21 and change-gearing 7, for varying the motor speed to keep the machine fully loaded and give the correct peripheral cutting-speed according to the diameter of the work-piece 1. A milliammeter 30 connected to a generator 27 driven directly or indirectly by the chuck spindle 5 indicates the correct peripheral speed, being calibrated in terms of different diameters of work-piece; separate scales may be provided for different types of metal to be cut.
Patent GB-683116-A (GB)
Title: Improvements in high power circuit-breakers having arc-extinguishing means
IPC: H01H33/985
Filed: 1951-06-08
Abstract: 683,116. Liquid-blast switches. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. June 8, 1951 [June 9, 1950], No. 13625/51. Addition to 615,749. Class 38 (v) The member 11 of the parent Specification is replaced by gas-containing cavities 19, 19a, 20, 20a in the immediate vicinity of the channels 9, so as to damp out the pressure impulses at the points at which they are created. The fluids passing into said cavities through passages 21, 22, 22a during arc extinction also assist in maintaining the arcs in the channels 9.
Patent GB-1260922-A (GB)
Title: Improvements relating to electrical testing apparatus and methods for testing the relationship between voltage and current in a component
Inventor: DENNIS WILLIAM HENRY
IPC: G01R31/26
Filed: 1969-03-17
Abstract: 1,260,922. Electrical tests. INTERNATIONAL RECTIFIER CO. (GREAT BRITAIN) Ltd. March 16, 1970 [March 17, 1969], No. 13880/69. Heading G1U. The relationship between the current through and voltage across a component is tested by passing through the component under test a current building up in time in accordance with a predetermined law, and measuring the voltage when the current reaches a predetermined level. To test the forward volt drop across a high current semi-conductor diode 21 at a particular current level, an increasing current, Fig. 2 (not shown), is passed through both the diode and two shunts 17, 18. A capacitor 31 is connected across the diode 21 until switching device 24, connected across shunt 17, senses that the required current level has been reached, when contact 30 changes over to connect the capacitor to voltmeter 32. The apparatus may be calibrated by connecting the voltage measuring circuit across shunt 18. The increasing current may be derived from a thyristor rectifying network 12 and smoothing circuit 13 energized from a three-phase supply 10. Under the control of firing circuit 14 the thyristors are caused to conduct for a progressively-increasing proportion of each cycle of the supply so as to provide the required increasing current output. The maximum current output may be altered by switching circuit 16 or pre-selector 16A. Pairs of forward/reverse thyristors 22, 23 may be included in the current path.
Patent GB-370226-A (GB)
Title: Improvements in or relating to distributing devices for pulverised or pasty material
IPC: A45D33/00
Filed: 1931-05-11
Abstract: 370,226. Powder &c. boxes. MAILLARD, J. E. B., Nogent-le-Roy, Eure-et-Loir, France. May 11, 1931, No. 13902. Convention date, May 12, 1930. [Class 18.] A b o x f o r powders or pastes, e.g. rice powder, rouge, powdered soap, comprises a sieve 13 held in a casing which is joined to the base of the box by flexible material 7 so that the sieve can move both laterally and vertically. The sieve is locked in a casing 11 by a ring 15, and the casing 11 fits in a casing 6 supported by a conical spring 10, a further casing 4 with an inturned flange enclosing the whole assembly. The upper part of the material 7 is fixed to the casing 6 by a ring 8, and the lower part is fixed to the base of the box by adhesive, or gripped between the base and a locking ring or the casing 4. A smaller inturned flange is provided on the casing 4 when the box is to be filled by withdrawing the casing 11. The base of the box is covered with hide or fabric. Powder &c. passes through the sieve to a puff 17 by pressing the latter down on to the sieve and moving it laterally.
Patent GB-1298172-A (GB)
Title: A method of isolating and chemically purifying amphotericin b
Inventor: KULBAKH VALTER OSVALDOVICH
Filed: 1971-05-08
Abstract: 1298172 Amphotericin B purification LENINGRADSKY NAUCHNO - ISSLEDOVATELSKY INSTITUT ANTIBIOTIKOV 8 May 1971 13906/71 Heading C2A A method of purifying crude amphotericin B comprises dissolving the crude antibiotic in dimethylformamide, adding distilled water to the solution in amount equal to half the volume of dimethylformamide used, acidifying the resulting mixture to a pH of between 2 and 3À6, removing the precipitated impurities, adding to the filtrate a volume of water equal to the volume of dimethylformamide used, adjusting the pH of the solution to a pH of from 6À5 to 7À0 and recovering the precipitated product. Preferably, the solution of the crude antibiotic in dimethylformamide is prepared by mixing 1 part by weight of crude antibiotic with from 10 to 20 parts by volume of dimethylformamide, followed by acidifying the resulting mixture with hydrochloric acid to pH 7 to 7À5. Then the mixture is stirred for 1À5 to 2 hours until the heptaenes are completely dissolved. Distilled water is then poured slowly into the mixture with stirring, in an amount of half the volume of the dimethylformamide used. The pH of the resultant solution is brought to 2À0 to 3À6 and the resultant precipitate, which consists mainly of antibiotically inactive heptaenes, is filtered off. Then further distilled water, equal in volume to that of the dimethylformamide used, is added and the pH of the mixture raised to 6À5 to 7À0 with 10% sodium hydroxide solution. The precipitated antibiotic is either filtered off or centrifuged and washed with 50% n-propyl alcohol and then acetone. Finally the amphotericin B is dried under vacuum.
Patent GB-1038192-A (GB)
Title: Improvements in or relating to flat electrical insulated cables
IPC: H05K1/11
Filed: 1963-04-09
Abstract: 1,038,192. Electric cables. IRC Inc. April 9, 1963 [April 17, 1962], No. 14111/63. Heading H1A. Layers of insulation of a flat cable having parallel conductors are bonded together through holes of a non-adhering separator so that these layers may easily be pulled apart. As shown in Figure 1, two insulated cables 12a, 12b each of which consists of a series of spaced parallel metallic conductors sandwiched between two bonded layers of insulation, are spaced apart by a separator 14 which does not adhere to the insulation and which has a plurality of holes enabling the cables to be partially bonded together. In another embodiment, to facilitate stripping the insulation of a flat multi-conductor cable, longitudinally spaced (or continuous) separating strips are arranged adjacent the conductors. The neighbouring layers of insulation are bonded together through the holes in the separating strips. The insulation may be of polyethylene, polyvinyl chloride or polytrifluorochloroethylene and the separator may be made of " Mylar " (Registered Trade Mark), polytrifluorochloroethylene or polytetrafluoroethylene.
Patent GB-1453407-A (GB)
Title: Extrusion press
IPC: B21C26/00
Filed: 1975-04-07
Abstract: 1453407 Extrusion SCHLOEMANN-SIEMAG AG 7 April 1975 [24 April 1974] 14131/75 Heading B3P An indirect or direct extrusion press has its die holder stem 10, Fig. 2, or its pressing stem 10, Fig. 1, mounted on a fixed platen 1 or a movable platen 2 by a mounting which allows small articulation of the stem to centre it in the billet container 3. The foot 11 of the stem engages a pressure plate 12 with a convex or concave rear surface engaged with a mating surface of a support plate 13. A retainer ring 14 with springs 16 urges the surfaces together. The stem is centred in the bore by a sleeve 20 so that during either direct or indirect extrusion a shell 25 of billet material is formed containing billet surface impurities. The sleeve 20 may be spring-biased against the billet container 3, Fig. 3 (not shown), or may be composed of one or more slippers (28), Fig. 5 (not shown).
Patent GB-1499405-A (GB)
Title: Burning refuse and coal
IPC: F23G5/44
Filed: 1975-04-07
Abstract: 1499405 Incinerators IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 18 March 1976 [7 April 1975] 14144/75 Heading F4B In a combined coal and refuse burning furnace including a moving chain grate 3 at the bottom of the combustion chamber 1 carrying a uniform bed 6 of burning coal, refuse in particulate form is injected into the combustion chamber and on to the bed of coal through one or more apertures 10 in the back wall 9 of the chamber 1 in a direction opposite to the direction of movement of the grate 3. Domestic refuse from a hopper 12 is injected by being entrained in a high velocity air stream 11 leaving an injector 13. A further air stream 14 directed upwardly deflects and carries the lighter fraction of the refuse into the upper area of the combustion chamber where it burns in suspension. Coal is supplied from a hopper at the front end of the grate, the thickness of the coal bed on the grate being controlled by means of a movable gate 7. Air is passed through the grate 3 in the direction of arrows 8 to burn the coal. The combustion chamber is provided with water tube-lined walls 2 for steam generation purposes.
Patent GB-1196693-A (GB)
Title: Self-Cleaning Poppet Spool Valve.
Inventor: HARPMAN WEBSTER B
IPC: F15B13/043
Filed: 1968-03-25
Abstract: 1,196,693. Valves. KING VALVE CO. 25 March, 1968, No. 14166/68. Heading F2V. A pilot operated valve comprises a spool 28 fitted with polyethylene balls 29, 29A each of which co-operates with a pair of fruato-conical seats 17, 24; 17A, 24A to control communication between inlet 19, work ports 35, 35A and exhaust ports 33, 33A. The spool is carried at its ends by diaphragms 26, 26A and moves in response to the pressures in chambers 30, 30A. These pressures are controlled by a similar solenoid-operated spool 43 having polyethylene balls 44, 44A thereon. The balls render the valves self-cleaning. Each valve housing is of sandwich construction and the components thereof can be assembled with any desired orientation. The diaphragms can be omitted, in which case the control pressures act directly on the spool ends.
Patent GB-194595-A (GB)
Title: Improvements in or connected with the manufacture of thermionic valves and the like
IPC: H01J9/385
Filed: 1922-05-19
Abstract: 194,595. Frost, S. G. May 19, 1922. Vacuum tubes. - A fusible element is connected inside the bulb of a thermionic valve or vacuum tube between one or more electrodes or an internal member and an external circuit so that the electrodes or other part may be heated by passage of current during exhaustion of the bulb, the fuse being afterwards ,blown by increasing the current. The internal member may be a metallic or other support, or an insulator associated with a conductor. The fuse 6 may be connected by spot-welding or pinching between an anode 2 and a grid 1 each of which has a single lead 4, 3 respectively; or the fuse may be connected between a separate conductor and an electrode. The filament may be mounted on a grooved insulating sleeve 8 on a cross-wire 9 - secured to the grid which maintains the filament in tension, the sleeve, being heated during exhaustion by current passed through the grid.
Patent GB-660493-A (GB)
Title: Improvements relating to electromagnetically operable switches
Inventor: BOURNE WILLIAM GEORGE
IPC: H01H50/20
Filed: 1949-05-27
Abstract: 660,493. Electromagnetic switches. ROTAX, Ltd. May 18, 1950. [May 27, 1949]. No. 14219/49. Class 38 (v). The electromagnet e, with its base piece f, slidable core and moving contact members p, may be bodily detached from its supporting bracket a by removing the screws i which fix the plate f to the base of the bracket and then sliding it bodily outwards perpendicular to the paper. In so doing slots at the far side of the plate disengage headed studs fixed to the base. The fixed contacts of the switch comprise two sets of four contacts s, mounted on two bars t which can be detached by removing screws x which fix them to the bracket and then sliding the bars outwards along runners v fixed to the frame.
Patent GB-571608-A (GB)
Title: Improvements relating to variable speed gears for cycles and the like
IPC: B62M9/124
Filed: 1943-09-02
Abstract: 571,608. Variable - speed gearing. FITZPATRICK, H., and FITZPATRICK, A. A. Sept. 2, 1943, No. 14313. [Class 80 (ii)] In variable-speed chain gearing, a driving chain C is transferred from one sprocket-wheel to another of a cluster A, A<1>, A<2> to change the gear ratio, by a sprocket-wheel B mounted on a crank-pin E projecting from a disc e fixed on a stud e<1> that is slidably and rotatably mounted in a housing F. A chain H is connected to the stud e<1>, and, when it is pulled, the stud moves axially and is rotated simultaneously about its axis. The last-named movement is caused by a pin, such as the end of the lubricator L, engaging a helical groove in the stud e<1>. The chain length between the sprocketwheel B and the cluster remains constant during a gear change. Reverse movement of the stud e<1> is effected by a combined compression and torsion spring M which encircles the stud and which is anchored at one end m<1> and bears at its other end m on an arm O journalled on the disc e and carrying a chain-tensioning sprocket-wheel o. The housing F is carried adjustably by a two-part bracket g<3>, g<4> clipped to a stay D. The control chain H is connected to an arm J on a control lever L movable over a plate k having inclined portions k<4> and end abutments k<5>.
Patent GB-778174-A (GB)
Title: Improvements in or relating to dispensing apparatus for liquid fuel
IPC: F04D9/00
Filed: 1954-01-12
Abstract: 778,174. Dispensing liquids. TOKHEIM CORPORATION. Jan. 12, 1954 [Jan. 15, 1953], No. 14317/56. Divided out of 778,171. Class 116. A siphon 34, Fig. 1, joining two tanks 26, 32 from which liquid is delivered by a pump 30 is primed by an ejector 250, 254, Fig. 2, operated by liquid delivered by the pump. The invention is illustrated as applied to the system of Specification 778,171 and the vent 254 serves as in Specification 778,173 to bleed air or gas from a delivery space 208 before delivery commences. The ejector 250 returns liquid to the tank 26 and a check valve 260 is included in the connection 36 priming the siphon. Specification 753,542 also is referred to.
Patent GB-1071731-A (GB)
Title: Improvements relating to carpet looms
Inventor: JOWETT JOHN BERNARD
IPC: D03D39/02
Filed: 1964-04-07
Abstract: In a three-shot Axminster loom the tuft-binding shots (12) are beaten-up to a lesser extent than the other shots (13), (14).  A bell crank lever (31), is pivoted at (32) and supports a reed (4) which is pivoted about (30) by a cam (40).  An eccentric (35) operates at a third of the speed of the cam (40) to rock the bell crank (31) and move the pivot (30) so that the reed (4) does not beat as far forward for the tuftbinding shot (12).