baber/WOPTO huggingface dataset:
Patent GB-534064-A (GB)
Title: Improvements in or relating to push-pull amplifying tubes
IPC: H01J21/20
Filed: 1939-12-22
Abstract: 534,064. Thermionic valves. MULLARD RADIO VALVE CO., Ltd. Dec. 22, 1939, No. 32780. Convention date, Dec. 28, 1938. [Class 39 (i)] In a push-pull amplifier the two control grids 2, 3 and anodes 8, 9 are arranged symmetrically about the cathode 1, the conductors thereto and the cathode conductors with their internal contacts being arranged at the same side of the valve. The grids may be formed by rods and be screened from each other by rods 4, 5. Screen and suppressor grids 6, 7 may be used.
Patent GB-491829-A (GB)
Title: An adjustable constant tension pulley mounting for short-centre belt drives requiring high speed reduction
IPC: F16H7/12
Filed: 1937-11-27
Abstract: 491,829. Belt gearing. HUDSON, A. Nov. 27, 1937, No. 32817. Convention date, Nov. 28, 1936. [Class 80 (i)] In a tension-adjusting mounting for a pulley 4 the pulley spindle 17 is carried by plates 15 pivoted at 16 to a base 5 and supporting a spindle 18 on which bear springs 23. The base is slotted at 6, 8 so as to be adjustable as to position lengthwise of the belt. The springs surround rods 20 secured to pivoted yokes 21 and their tension may be adjusted by means of nuts 24.
Patent GB-1196557-A (GB)
Title: Improvements in or relating to Spark Ignition Internal Combustion Engines
IPC: F02M35/108
Filed: 1968-07-10
Abstract: 1,196,557. Intake systems for I. C. engines; spray carburetters. SOC. ANON. ANDRE CITROEN. July 10, 1968 [July 26, 1967], No.32899/68. Heading F1B. Mixture is supplied to the combustion chamber 2 of a spark-ignition I. C. engine from a pair of carburetters 7 and 10 through respective induction passages 5, 6 and 8, 9 opening into the combustion chamber through respective valve controlled ports. The passage 8, 9 and its respective port are of larger cross-sectional area than the passage 5, 6 and its respective port and the carburetter 10 supplies a mixture suitable for maximum engine output and the carburetter 7 mixture for low output or idling. The mixture passing through the passage 6 is heated by the close proximity of exhaust gases flowing through the exhaust manifold 12. At maximum engine output both carburetters 7, 10 may supply mixture or the carburetter 7 may be rendered inoperative. A single air filter 11 or separate air filters may be provided for the carburetters. The inlet valve 18 may be opened for a longer period than the inlet valve 14 or vice versa.
Patent GB-538439-A (GB)
Title: Improvements in exothermic mixtures for use in the production of iron and iron alloys and a method of using such mixtures
IPC: C22B5/06
Filed: 1939-12-28
Abstract: 538,439. Thermo-aluminic processes; alloys. UDY, M. J. Dec. 28, 1939, No. 32981. Convention date, Jan. 28. [Class 82 (i)] An exothermic mixture for use in the production of metallic iron consists of ferric oxide chemically combined with calcium oxide and a silicon-containing reducing agent such as low carbon ferro-silicon, or silicon alloyed with other metals such as nickel, aluminium, magnesium, and calcium. In the production of alloys such as iron-chromium alloys, the reducing agent used is chrome silicon or ferro-chrome silicon. The exothermic mixture may also be caused to react with molten metals to produce alloys or may be used to alter the composition of an iron by dilution with pure iron by igniting the mixture in contact with the molten iron. An oxidizing agent such as sodium nitrate, sodium chlorate or manganese dioxide may be added to the mixture and the calcium oxide content of the latter may be greater than.that equivalent to one molecule of that substance to one atom of silicon.
Patent GB-174798-A (GB)
Title: Improvements in or relating to splicing mechanism for circular knitting machines
IPC: D04B9/18
Filed: 1920-11-23
Abstract: 174,798. Spiers, W. Nov. 23, 1920. Circular machines. - Splicing- mechanism applicable particularly to machines with two coaxial opposed needle cylinders and mainly intended for half-round splicing above the heel and along the foot bottom of a stocking &c. comprises a yarn guide 3 pivoted at 10 on the inner end of a slide 2 mounted substantially at right-angles to the needles in a bracket 3 fixed to the outside of the cam-box 1. The slide 2 is moved towards the needles by a pattern-controlled arm 5 against the action of a spring 4. At each revolution of the needle cylinders a cam 17 on the bottom cylinder by striking an arm 16 on a. shaft 14 rocks an upper arm 19 thereon against the action of a spring 20. When the slide 2 has been pushed in for splicing, the arm 19 engages the guide 9 at each revolution, and withdraws the splicing-yarn from the needles for a portion of a revolution. A vertically movable trapper 22 pivoted at 21 on the bracket 3 is raised by an incline 23 on the slide 2 to release the splicing-yarn as the slide moves forward and is drawn down on the yarn by a spring as the slide retires, and a reserve of yarn is drawn off the supply by a wire finger 26 on the arm 5. Mechanism is provided for slackening the loops on those needles that take the splicing- yarn consisting of a lever 29 operated by a cam 30 on the bevel driving-wheel 31 or other convenient part and acting on a projection 28 carried by the sinker ring 27. The ring 27 when oscillated rides up and down inclines on its support, the movement being timed to synchronize with the turning movement of the guide 9.
Patent GB-795207-A (GB)
Title: A double-purpose electric switch for controlling electric circuits and particularly motor cycle equipments
Inventor: COOKE WILLIAM
IPC: H01H25/00
Filed: 1955-11-18
Abstract: 795,207. Head-lamps. LUCAS (INDUSTRIES), Ltd., J. Nov. 12, 1956 [Nov. 18, 1955], No. 33029/55. Class 38 (5). A switch suitable for controlling the headlamp dimming and horn circuits of motor cycles comprises a pair of fixed contacts e connected to the separate lamp filaments, a snapaction mechanism comprising a spring link k, m and hand-operating lever i, j and movable contact f, the lever and movable contact f being co-pivoted on a post g secured to a resilient strip h on the base c. Depression of handle j causes an insulating stud p on post g to depress a resilient blade n against a contact o in the horn circuit.
Patent GB-1323632-A (GB)
Title: Memory accessing arrangement
IPC: H01L27/105
Filed: 1971-07-14
Abstract: 1323632 Data storage NATIONAL CASH REGISTER CO 14 July 1971 [3 Aug 1970] 33046/71 Heading G4C [Also in Division H1] A data store comprises a matrix array of memory elements scanned in rows by an electron beam, each element having an associated indexing member, the arrangement being that a predetermined number of indexing members in each row, the number being more than one and less than the total number in the row, are connected to a common row conductor which is in turn connected to a logic circuit arranged to detect the pulses produced in the conductor as the beam crosses each connected indexing member. The subject matter of this specification is similar to that of Specification 1,323,631.
Patent GB-916181-A (GB)
Title: Improvements in or relating to mixing machines
Inventor: HARRISON KENNETH JAMES
IPC: B28C5/08
Filed: 1960-09-27
Abstract: 916,181. Concrete mixers. LINER CONCRETE MACHINERY CO. Ltd. Sept. 4, 1961 [Sept. 27, 1960; July 1, 1961], Nos. 33100/60 and 23847/61. Class 86. In a rotary tilting drum concrete mixer the drum 12 is directly driven by an hydraulic motor, the casing 14 of the motor secured to the inside of the drum 12, and its shaft 16 fixed in the tilting yoke 17. Pressure fluid is supplied to the motor through the flexible connections 25 and hollow shaft 16 from hydraulic means or from a pump or pumps 21 mounted, together with the driving engine 22, supply tank 23 and control valve 24, on the wheeled or fixed mixer carriage 11; or on a selfpropelled vehicle. The drum 12 is tilted over top dead-centre to effect discharge, which may be assisted by the mixing blades 20, the hydraulic motor being reversible ; the motor speed may also be varied at will by the control valve. The drum is loaded by a skip 19. In a modification (see Fig. 3, not shown) the casing of the hydraulic motor is attached to the yoke 17, and its shaft 16 is rotatable and is secured to the drum. A flexible coupling may be inserted in the drum drive.
Patent GB-521397-A (GB)
Title: Improvements in the spring suspension of motor vehicles
IPC: B60G11/00
Filed: 1938-11-14
Abstract: 521,397. Vehicle spring-suspensions. ZAVODY RINGHOFFER-TATRA AKCIOVA SPOLECNOST. Nov. 14, 1938, No. 33105. Convention date, Nov. 20, 1937. [Class 108 (ii)] In a rear-engined motor vehicle with driving half-axles 1, the suspension springs 4 are carried at one end on the outer end of the axles or their brake drums 3, and at the other end on the housing of the motor or the change-speed gear. The centres 5 of the springs are articulated to the axle-cover 2 connecting the motor housing to the vehicle body.
Patent GB-464517-A (GB)
Title: Improvements in floors and similar structures employing filler blocks
IPC: E04B5/21
Filed: 1936-09-29
Abstract: 464,517. Floors. SMITH, G., and REINFORCED CONCRETE STEEL CO., Ltd. Sept. 29, 1936, No. 33130/35. [Class 20 (iv)] A reinforced-concrete floor is provided on its underside with a plurality of cells formed by longitudinal and/or transverse undercut ribs which support, within the cells, pre-cast filler blocks a made of a concrete employing pumice-stone or other light porous material as an aggregate, such blocks having flat upper and lower faces and being provided on their undersides with flanges e which are arranged to abut beneath the undercut ribs so that the underfaces of the blocks form a substantially continuous surface. The blocks a shown in Fig. 1 are of rectangular shape in plan and have flanges e and undercut recesses d on two opposite sides so that, when the blocks are arranged in rows with the flat vertical faces b and flanges e in abutment, undercut channels are provided between the blocks ; concrete h is cast over the blocks and in the channels, reinforcing rods g, h being provided. In the modification shown in Fig. 4, the blocks 9, which are square in plan, have flanges e on three sides and are disposed in pairs so that intersecting channels are provided between the blocks. Wood fibre may be used instead of pumice as the aggregate. The upper and/or lower faces of the blocks may be formed with recesses for holding a light-weight material such as cork, in the form of a loose or compacted mass. Recesses or projections may be provided on the blocks to key with the concrete.
Patent GB-618802-A (GB)
Title: Improvements in or relating to magnetic systems for moving coil loudspeakers and like apparatus
IPC: H04R9/02
Filed: 1946-12-07
Abstract: 618,802. Loud-speakers. CHAVE, D. M. Dec. 7, 1946, No. 33168. [Class 40 (iv)] [Also in Group XXXV] In a loud-speaker magnet producing a radial flux in an annular air-gap, the outer annular polepiece is of conical shape such that its rear surface is inclined forwardly as it extends away from the gap, whilst the inner polepiece is tapered right up to the gap. As shown, the outer cylinder 10 is the permanent magnet, the inner plug being of mild steel, but an alternative form has the inner member permanently magnetic or as a further alternative the whole magnet may be coil energized. The inner polepiece 14 is made of high saturation steel, e.g. Swedish iron or electrolytic iron, the outer polepiece 21 being made of a high saturation iron of high cobalt content and may be partly of mild steel with a central ring of the special iron if desired. The inner face 25 of the annular polepiece makes an angle a of between 95 and 120 degrees with the axis of the magnet. The outer surface of the polepiece is in several frusto-conical stages 29, 30, 31 of increasing angle.
Patent GB-672211-A (GB)
Title: Synthesis of vitamin a
Filed: 1947-12-16
Abstract: A compound of the formula B.CMe : CH-CH : CH-CMe(OH).CH2CH2O.COR wherein B is the radical of which b -ionone is the methyl ketone, is obtained by reacting a compound of the formula B-CMe : CH.C \sn CMgX (wherein X stands for halogen) with a compound of the formula CH3.CO.CH2CH2.O.CO.R (wherein R stands for alkyl or aryl) and hydrolysing the product to give a compound of the formula B.CMe : CH.C \sn CMe(OH).CH2CH2.O.CO.R the acetylenic linkage of which is catalytically hydrogenated.  Samples have been furnished under Sect. 2 (5) of vitamin A and its acetate prepared by the above processes. Specification 664,815 is referred to.
Patent GB-331868-A (GB)
Abstract: 331,868. Odolini, C. Jan. 10, 1929. Systems, electric.-A dual system employs the magneto interrupter, condenser and distributor for both the magneto and a coil circuit. The shaft carrying the rotary distributor arm 6 and the interrupter cam 12 is driven by helical gearing from the armature shaft 1, the casing for the distributor &c. being screwed to the magneto frame. The choice of circuit is determined by a switch C. Four contacts 28, 30, 31, 27 are spaced equidistantly around the shell 26 while an additional contact 29 is placed half-way between the contacts 28, 30. The spindle 24 is integral with an insulating block 25 having a contact 32 long enough to span the contacts 28, 29. A third radial contact 38 is placed as shown in Fig. 4, and communicates with the spindle 33 and the lead 35 connected to the central contact of the distributor head. The contact 29 is connected to the low-tension interrupter by lead 19. Contacts 28, 30 are connected to the magneto and coil primaries respectively, and contacts 27, 31 to the corresponding secondary windings. In a modification, discs mounted on the armature shaft are engaged by brushes connected to contacts 28, 29 of the switch C.
Patent GB-466752-A (GB)
Title: Improvements in bookbinding
IPC: B42B5/10
Filed: 1935-11-29
Abstract: 466,752. Bookbinding. TRUSSELL MANUFACTURING CO. Nov. 29, 1935, No. 33198. Convention date, Feb. 12. [Class 16] In a cover element for use with sheets 18 of material such as paper, cloth, or metal attached together by means of a binding element 16 consisting of a series of attaching loops passed through openings along corresponding margins of the sheets, the cover having parallel rows of openings spaced in accordance with the spacing of the loops of the binding element, there is provided in the cover midway and between the rows of openings a crease or fold to facilitate the assembling of the cover and the binding element and to provide ready folding of the cover when using the book. The binding element may consist of a length of wire bent to provide spaced loops as described in Specifications 422,409 and 447,231, or a length of wire bent into a simple spiral. As shown in Fig. 5, the cover comprises a spine 20b and sides 29b secured together by means such as stitching or adhesive, and the spine is folded along a central zone 31. In the form shown in Fig. 8, the main part of the spine is arranged outside of and closely adjacent the binding element 16, and is creased or otherwise treated to provide a zone of weakness 31e, and strips 34 of relatively rigid material may be inset on opposite sides of the zone 31e. Four rows of perforations are provided, and the portions of the spine lying between the outer-pairs of rows are folded and secured together. In a modification, of the form shown in Fig. 8, the intermediate main portion of the spine arranged on the outside of the binding element is spaced from the latter and may be V- shaped. In a further form, the cover spine has two rows of perforations, is folded inwardly so that the two rows coincide with each other for the reception of the binding element, and the folded portion is secured by stitching or other means. In another form, the spine is provided with four rows of perforations, is folded between the two inner rows so that these rows coincide with each other and to form an outward projection from the spine, and the loops of the binding element pass from the inside to the outside of the cover through one of the outer rows of perforations, then through the two inner rows, and into the cover through the other outer row.
Patent GB-176083-A (GB)
Title: Improvements in or relating to shock absorbing devices and resilient supporting means
IPC: F16F1/46
Filed: 1920-11-25
Abstract: 176,083. Turner, A., and Turner, H. J. Nov. 25,1920. India-rubber springs. - A shock-absorbing device comprises an elastic rubber cord which, under load, is extended by the members of a toggle device. As shown, a set of double toggle-levers 1, 2, Fig. 1, are placed at right-angles to a similar set 3. Endless bands 5, 6 of rubber cord connect the joints of the toggles so that the approach of plates 10, 11 extends the bands. The lower levers of each set have rigid extensions such as 1<b>, 2<b>, 3<b>, the upper ends of which are connected by rubber bands 7, 8 arranged to come into action after the bands 5, 6 have taken the initial strain. More than two sets of toggles may be employed in a group. In a modification, long and short levers 13, 13 and 15, 16, Fig. 3, are pivoted together at fixed points 14, 17 respectively and are connected at their outer ends by levers 18, 19 having rigid extensions 18a, 19a provided with rollers 22 against which the load bears. Elastic bands 23, 24 connect, as shown, the joints of the levers. Reference has been directed by the Comptroller to Specifications 9440/13 and 2564/14.
Patent GB-630541-A (GB)
Title: Resilient mounting for the abutment supports of industrial furnace arches
IPC: F27D1/02
Filed: 1947-12-17
Abstract: 630,541. Furnace roofs. THIEMANN, W. H. A. (Oesterreichisch-Amerikanische Magnesit Akt.-Ges.). Dec. 17, 1947, No. 33332. [Class 51 (ii)] In a furnace roof support of the type in which the thrust of the arch is taken by spring pressed arch abutments guided in a pivoting movement on expansion of the arch, the springs 9 act between the nuts 7 of tension screws attached to bolts 8 and the end discs of box girder elements 6 which are pivoted about said bolts 8. The bolts 8 run transversely through channel-shaped girders forming the buckstays 5 and through slots 15 in the sides 14 of said box girder elements 6. The arch abutments 3 are articulated to transverse buckstays by the suspension bolts 4 the upper joints 12 being disposed slightly outwards relative to the lower guides 13, which positioning, in conjunction with the pivoting of the box girder elements 6, ensures that said elements are always at right angles to the abutments 3 on expansion of the arch.
Patent GB-789145-A (GB)
Title: An improved device for fitting to exhaust pipes of motor vehicle internal combustion engines
IPC: F01N13/08
Filed: 1955-11-22
Abstract: 789,145. Exhaust ejectors. TREVELYAN, R. J. Oct. 2, 1956 [Nov. 22, 1955], No. 33334/55. Class 7(2) An exhaust extractor fitted to the end of an exhaust pipe comprises a funnel 6 facing the direction of motion of the vehicle and integral at its narrow end with an annular plate 4 containing a series of holes 5 surrounding the end of the exhaust pipe 2, the air forced through the holes due to the motion of the vehicle exerting an extraction effect on the exhaust gases which is supplemented by the suction produced by a flange 7 on the edge of the funnel 6. The extractor may be made of aluminium and in Fig. 4 it is provided with a protecting cover 9.
Patent GB-1388307-A (GB)
Title: Needles
IPC: B68G15/00
Filed: 1972-07-17
Abstract: 1388307 Mattress tufting needle MATRAMATIC CO Ltd 28 June 1973 [17 July 1972] 33409/72 Heading DIG A needle 1 for a mattress or upholstery tufting machine has a point 4, a hook shaped groove 8 engagable with the button cord 7 to carry it through the padded work 2, 3 and a further uniformly curved groove or recess 10 which is disposed at right angles to the groove 8 to accept the retaining wire 6 before the needle is withdrawn.
Patent GB-521506-A (GB)
Title: Improvements in propeller pencils
IPC: B43K21/12
Filed: 1938-11-17
Abstract: 521,506. Pencil-holders. BINA & BARREY, Ltd., and BARREY, F. F. Nov. 17, 1938, No. 33437. [Class 146 (iii)] In a pencil holder having a screw-projecting lead-carrier 1, the spiral 3 is not secured to any other part of the holder but is held in slight compression between abutments 4, 6a the abutment 6a being so formed that normally, when the spiral presses against it, it holds the spiral against rotation with the lead-carrier, while upon the lead-carrier reaching the end of its travel adjacent this abutment, the spiral is further compressed, so that it is disengaged from the abutment and is free to rotate with the lead-carrier, whereas the other abutment 4 is plain, and on the leadcarrier 1 reaching the end of its travel adjacent this abutment, it lifts the end of the spiral and passes freely thereunder. The abutment 6a is formed by a slightly tapered constriction in a tube 6 surrounding the spiral and having at one end screw-threaded engagement with the casing 7. A member 8 limits the upward movement of the lead-carrier 1, and is formed with a square socket in which engages a member 9 carrying a cap 10. The usual slotted tube 2 is secured to the member 8 whereby rotation of the member 9 causes rotation of the tube relative to the spiral 3. Specifications 309,003, and 331,271, [both in Class 146 (iii)], are referred to.
Patent GB-387461-A (GB)
Title: Improvements in or relating to internal combustion engines of the hot-bulb type
IPC: F02B9/00
Filed: 1931-12-02
Abstract: 387,461. Oil engines; cycles. BAGNULO, A., 54, Rue Armand Silvestre, Courbevoie, Seine, France. Dec. 2, 1931, No. 33449. Convention date, Dec. 29, 1930. [Classes 7 (ii) and 7 (iii).] In a hot-bulb engine, the bulb D is thermally insulated by an air space F from the cylinder head and communicates with the cylinder through a conduit M, the bulb being formed with openings in its walls to accommodate an igniter and the conduit M. The igniter and the conduit are thermally insulated by an air space from the walls of the bulb. The bulb is preferably carried by a cross-piece G so that it can be withdrawn from a recess E through a removable cover N, which is also insulated from the bulb. The cover N, the conduit M, and the fuel injector O are water-cooled. By closing the exhaust valve before the end of the exhaust stroke, burnt gases are retained in the cylinder to form part of the working charge. Specification 300,658 [Class 7 (iii), Internal-combustion engines, Carburetting-apparatus &c. for], is referred to.
Patent GB-1507711-A (GB)
Title: Glass for use in dielectric optical waveguides
IPC: C03C13/04
Filed: 1974-07-29
Abstract: 1507711 Sodium borosilicate glass POST OFFICE 14 July 1975 [29 July 1974 9 Dec 1974 24 Jan 1975] 33484/74 53097/74 and 3306/75 Heading C1M A sodium borosilicate glass has a composition comprising 95-99À99% by weight of a mixture of Na 2 O. B 2 O 3  and SiO 2  in a ratio lying within Region A of Figure 1, the glass also comprising 0À01-5% by weight of a redox buffering oxide (e.g. As 2 O 3  or Sb 2 O 3 ). The glass may be used to form the core and/or cladding of a dielectric optical waveguide, the waveguide preferably being made using a double crucible apparatus. In making the glass, the batch materials may be heated to 250‹C. in vacuo (to reduce the hydroxyl group content of the glass) and then melted, and then the melt held at 800-1400‹C. for ¢-2 hours while a dry reducing gas is bubbled therethrough (to achieve an optimum redox state). The reducing gas preferably consists of 80-100% (by volume) CO 2  and 0-20% CO. The melt is subsequently fired for up to 40 hours (e.g. in dry air, CO 2  or N 2 ). Specification 1.507,712 is referred to.