baber/WOPTO huggingface dataset:
Patent GB-1113177-A (GB)
Title: A multi-channel amplifying system
IPC: H04J1/16
Filed: 1965-08-04
Abstract: 1,113,177. Multiplex radio signalling. NIPPON ELECTRIC CO. Ltd. 4 Aug., 1965 [4 Aug., 1964], No. 33461/65. Heading H4L. In a frequency division multiplex system in which a plurality of carriers are amplified by a common amplifier, the carriers are arranged to have frequency spacings which are less towards either end and greater towards the centre frequency of the pass band of the amplifier. In this way, interference due to intermodulation caused by non-linearity of the amplifier, particularly at the transmitter, which with equal frequency spacings would be concentrated in the centre of the pass band, is minimized. Examples and graphical methods of calculating the optimum carrier frequencies and frequency spacings are described.
Patent GB-623453-A (GB)
Title: Aluminium-magnesium alloys
IPC: C22C21/06
Filed: 1946-11-11
Abstract: An aluminium-base alloy consists of 9-12 per cent magnesium, 0.1-1.0 per cent beryllium, 0.001-0.05 per cent boron and the balance aluminium, the preferred amounts of magnesium and of beryllium being 11 per cent and 0.20-0.25 per cent, respectively. The beryllium is preferably added in the form of a beryllium-aluminium alloy to an aluminium-magnesium alloy containing 9-12 per cent magnesium either during or subsequent to fusion of the latter alloy, and preferably before degasification by boron trichloride.  The boron is introduced by the continued introduction of boron trichloride into the molten mix after degasification is completed, as described in Specification 623,452.
Patent GB-1276532-A (GB)
Title: Shutter mechanism for cameras
Inventor: SPECKHART FRANK HENRY
IPC: G03B7/083
Filed: 1969-07-03
Abstract: 1276532 Photographic shutters EASTMAN KODAK CO 3 July 1969 [3 July 1968] 33563/69 Heading G2A A shutter blade S is held in a light admitting position by frictional engagement between an armature 52 and an electromagnet C. The blade is pivoted at 18 and has a return spring 20. Depression of push button 15 closes contacts 28 to switch on exposure timing circuit T and releases shutter driver 10 to impact projection 16 of shutter blade S, the projection wedging itself between the armature 52 and electromagnet C which is energized. At the end of the exposure interval determined by a timing circuit formed by photo-resistor 32 and capacitor 34, uni-junction transistor 36 fires to render SCR 44 conducting and SCR 40 non- conducting thus de-energizing electromagnet C to allow the shutter blade to regain its closed position. Stops 26, 102 are provided to limit movement of the shutter blade. Timing circuit switch 28 may alternatively be operated by movement of shutter driver 10 or by movement of blade S.
Patent GB-1040729-A (GB)
Title: Preparation of polyacetals
Inventor: KOECHER ERNST ULRICH
IPC: C08G75/12
Filed: 1963-08-26
Abstract: Polyacetals comprising the recurrent group -CH2CH2OC(R)2-X-, optionally with -CH2-(CH2O)m-C(R)2-X-, wherein at least one X group is sulphur, any remaining X groups being oxygen, m is 0 or 1, R is H, alkyl or halogeno-alkyl, may be used as lubricants.ALSO:1:3-Oxathiolane is prepared by reacting mercaptoethanol with a stoichiometric amount of paraformaldehyde in the presence of an acid catalyst.  The crude product was purified with KOH or Al(OH)3 and dried over metallic Na.ALSO:Sulphur containing polyacetals are prepared by polymerizing a compound of Formula (I) <FORM:1040729/C3/1> either alone or with a compound of Formula (II) <FORM:1040729/C3/2> where at least one group X is sulphur, X otherwise being oxygen, n is 0 or 1, R is a H, C1- 4 alkyl or halogeno-alkyl group, using an acid catalyst (e.g. a mineral acid or a Lewis acid or addition compound thereof) and, optionally, a chain terminator (e.g. an alcohol, amine, thio-alcohol, open-chained acetal, ester or amide). Specified monomers are ethylene, propylene and butylene oxides and sulphides, epichlorohydrin, 1 : 3-dioxolane, 2 - methyl - 1 : 3 - dioxolane, 1 : 3 - oxa - thiolane and 2 - methyl - 1 : 3 - oxa-thiolane. Suitable catalysts and chain terminators are listed.  The Examples describe the polymerization of 1 : 3-oxathiolane, (1), (2) alone, and with (3) mercaptoethanol, (4) methylal, (6) 1 : 3-dioxolane, and (7) dioxolane and glycerol, and of (7) 1 : 3-dioxolane and propylene sulphide.
Patent GB-322083-A (GB)
Title: Improvements in diaphragms for loud-speakers and the like
IPC: H04R7/12
Filed: 1928-11-17
Abstract: 322,083. Bischoff, P. Nov. 17,1928. Diaphragms. - A diaphragm for loudspeakers &c. is formed from a sheet of paper which is first divided by radial folding creases a into a plurality of triangular fields b whereupon the outer portion 2 of each field is bent along an arcuate fold c substantially at right angles to the inner part so as to curve the surfaces b and form a rigid concave structure. In a modification, the outer portions 2 are extended and again folded along arcuate folds to form further curved surfaces which are substantially parallel to the main surfaces b.
Patent GB-1500082-A (GB)
Title: Terminal insulator fittings for high tension electric cables
IPC: H02G15/06
Filed: 1975-08-14
Abstract: 1500082 Insulator FELTEN & GUILLEAUME KABELWERKE AG 14 Aug 1975 [12 Oct 1974] 33861/75 Headings H2C and H2E A terminal insulator comprises a body 1 of resin-reinforced glass fibre, made by filament winding, and a connection bolt 6. The body ratio comprises collars 4, 5 and the connection bolt is held at collar 4 by locknuts 10 and the joint sealed by rings 13. A shield electrode 16 may be provided and the body and head evacuated via bore 15 and groove 14. A cable may be connected to the hollow connector bolt by soft solder, or by a compression joint. For use as an outdoor insulator the body may be placed inside a porcelain insulator (Fig. 2, not shown) and the assembly filled with oil under pressure.
Patent GB-1074386-A (GB)
Title: Hydraulic axial piston pumps and motors
Inventor: SLIMM VICTOR ROY
IPC: F01B3/10
Filed: 1964-08-19
Abstract: 1,074,386. Reciprocating pumps and motors. DOWTY TECHNICAL DEVELOPMENTS Ltd. Aug. 9, 1965 [Aug. 19, 1964], No. 33865/64. Heading F1A. In an axial piston pump or motor the leading sides of the arcuate inlet and outlet ports 29, 31 in a stationary valve plate are provided with grooves 32 and 33, respectively, which provide a restricted connection between the cylinder ports and the plate ports. In a pump the T.D.C. and B.D.C. of the pistons occur when the respective cylinder port has just broken communication with the plate ports and in a motor just prior to communication with the plate ports. The cylinder ports are slightly offset from the axes of the respective cylinders. Fig. 1 (not shown) illustrates a tilting head pump having a cylinder block (1) mounted for axial and tipping movement relative to the valve plate (2). The valve plate may be used with fixed and variable displacement cam plate pumps and motors. The cylinder block may be mounted for rotation in bearings and be provided with a valve plate rotatable therewith and axially movable and tiltable relative thereto. The plate is connected to the block by sleeves which enter the cylinder bores.
Patent GB-1032178-A (GB)
Title: Improvements in or relating to pallets, stevedore's pallets, cargo boards and the like
Inventor: CRAGG EDWARD HUTCHINSON
IPC: B65D19/38
Filed: 1963-08-27
Abstract: 1,032,178. Pallets for handling loads. W. H. SHERIDAN & SON Ltd. July 22, 1964 [Aug. 23, 1963], No. 33951/63. Heading B8H. Figs. 1, 2 show a two-way entry pallet each face being constructed of four main decking boards 2 and two shorter decking boards 4, 6 attached to three wooden bearers 8. The boards 6 are narrower than the boards 2, 4 and are removably attached to the bearers 8 by countersunk coach bolts 10 and nuts. Two metal reinforcing and lifting devices 18 convert the pallet into a stevedore's pallet by providing loops 24 for the attachment of chains &c. adjacent to each of the four corners of the pallet. Each device 18 consists of upper and lower parallel arms 20, 22 of square steel tubing having round section steel loops 24 welded at each end (with an insert shown dotted to reinforce the adjacent bearer 8). Reinforcements 26, 28 are welded between the arms 20, 22 and are so arranged that they fit snugly against the bearers 8 when the boards 6 are temporarily removed to enable the devices 18 to be fitted adjacent to and transversely of the bearers 8 and upon the upper and lower faces thereof. Fig. 5 shows a four-way entry pallet with two of the metal devices 18 built-in with crossmembers 32, 34 welded to the arms 20, 22 and with tie members 36. Fig. 6 shows a modification of the pallet shown in Figs. 1, 2 wherein the loops 24 are omitted and lifting rings 90 provided on I-beams 88 retained at each end by a spring 92 engaging a chamfer 91 on a bearer 80.
Patent GB-410429-A (GB)
Title: Improvements in or relating to piezo-electric devices
IPC: H03H9/19
Filed: 1933-12-04
Abstract: 410,429. Piezo - electric crystals. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL, 79, Boulevard Haussmann, Paris. Dec. 4, 1933, No. 34038. Convention date, Dec. 3, 1932. Drawings to Specification. [Class 40 (v).] A quartz crystal is shaped as a rectangular parallelepiped having the electric axis and one other axis equal to one another, while the length of the. third axis is different, the axes being proportioned so that the frequencies of vibration along them are all equal. A piezo-electric lamina may be built up of a number of crystals cut in the above manner. Specification 383,075 is referred to.
Patent GB-357000-A (GB)
Title: Inflatable hollow rubber articles and process for their production
IPC: B29D22/02
Filed: 1930-11-12
Abstract: 357,000. Pneumatic toys. DOROGI ES TARSA GUMMIGYAR R. T. DR., DOROGI, I. and DOROGI, L., Albertfalva, Budapest. Nov. 12, 1930, No. 34130. [Class 132 (iii).] Inflatable hollow rubber toys consisting of flat outer sheets with at least one insertion piece joined at its edges to the outer sheets, are controlled as to shape when inflated by joining the inner faces of the outer sheet at suitable points to the insertion piece so as to divide the internal space into several interconnected spaces. Outer sheets 2, 3, joined together at their edges 1, and to a folded insert 4 at 13, 14, are also attached to the inset at 6, 7, so that the article inflates as at Fig. 7 to something resembling a motor-car. The joints may be made by means of an adhesive, or by the use of perforated templets, e.g. of paper. Specifications 233,676 and 242,227, [Class 132 (iii), Toys], are referred to.
Patent GB-900104-A (GB)
Title: Improvements in apparatus for use in a game
IPC: A63F9/02
Filed: 1959-10-09
Abstract: 900,104. Games. SHEKTER, R. J. Jan. 9, 1961 [Oct. 9, 1959], No. 34378/59. Class 132 (2). In apparatus for a game simulating the firing of both missile and anti-missile rockets arms 7, 8 pivotable about points 9, 12 define the rocket trajectories and are provided, beneath a translucent screen with a number of electric light bulbs 10, 13, each associated with sensing whiskers 11 or 14. The first player moves arm 7 to select a missile trajectory and the bulbs are illuminated in turn, the second player using arm 8 to select an anti-missile trajectory and whiskers 11, 14 being able to touch each other where the arms cross so that if they touch while both activated a hit is scored and registered by a bright flash of light. In a modification, Fig. 3, two pulley arrangements are provided with cords 17, 24 carrying bulbs 18, 19 with whiskers 20, 21 and bulbs 25, 26 and whiskers 27, 28 respectively. The speeds of the rockets may be fixed or variable.
Patent GB-339448-A (GB)
Title: Apparatus for testing the amount of muscular imbalance for near vision and also for determining the amount of accommodation in the human eye
IPC: A61B3/08
Filed: 1929-11-12
Abstract: 339,448. Bateman, F. W., and Bateman & Co., Ltd., F. Nov. 12, 1929. Sight-testing apparatus. - Apparatus for the estimation of the muscular imbalance for near vision comprises a vertically rotatable screen, Fig. 1, with vertical and horizontal scales and a centrally placed convex or plane mirror, by which light is reflected into one eye from a source at the side of the head. A cylindrical lens placed before the eye produces a line of light whose apparent position on the scales determines the muscular imbalance'. A standard letter test for accommodation may be mounted on the other side of the screen. The apparatus may be slidably mounted upon a graduated rod.
Patent GB-176492-A (GB)
Title: Improvements in side delivery hay raking machines, swath turners and tedders
IPC: A01D78/00
Filed: 1920-12-07
Abstract: 176,492. Bamford, J., and Bamford, C. J. Dec. 7, 1920. Haymaking.-A side-delivery hay-raking machine, swath-turner, or tedder of the type in which rack-bars carrying pendent tines extend between eccentrically-placed revolving spiders or the like is provided with shields to prevent hay from becoming entangled in the rotating parts. The back face 1 of the boss 8 of the revolving spider 3 is provided with an annular rim 4, within which a flanged portion 5 of the non-rotating boss part 6 of the axle 7 fits. An annular shield 14 secured by blocks 11, clips 12, and bolts to the spider arms keeps the hay from the cranked ends of the arms, the outer edge of the annulus having a flange 14a. The crank-pins project through holes in this annulus and carry rake-bearing blocks 17 which are formed with shieldlike members also projecting through the annulus and covering the crank-pins. The front ends of the crank-pins are protected by shields 22 held in position by the rake-holding bolts.
Patent GB-894966-A (GB)
Title: Improvements in or relating to electrostatic writing tubes
IPC: H01J31/06
Filed: 1959-02-09
Abstract: 894,966. Electric recording etc.; heads. DICK CO., A. B. Feb. 9, 1959 [Feb. 7, 1958], No. 34531/61. Divided out of 894,965. Class 40 (2). [Also in Group XL (a)] In an electrostatic writing tube such as described in Specification 871,194, in which a plurality of separate writing wires pass through the end wall of the envelope, each wire passes between arcuate glass segments 66a, 66b, Fig. 3, or between two glass semicylinders 60a, 60b, Fig. 2, in order to reduce the capacitance between wires. In each case 30 is the end wall of the tube and the wires are fastened to a glass rod 64.
Patent GB-823988-A (GB)
Title: Improvements in or relating to bending machines
Inventor: BESWICK WILLIAM
IPC: B21D7/08
Filed: 1956-11-13
Abstract: 823,988. Curving. GENERAL SHEET METAL CO. (BURY) Ltd. Nov. 13, 1957 [Nov. 13, 1956], No. 34611/56. Class 83 (4). A machine for curving metal angles comprises two main rolls over which the angle passes, an intermediate roll beneath which it passes and a roll exerting an edgewise pressure on the angle to control lateral distortion thereof during bending. Main rolls 12, 13 having flanges 12a, 13a are adjustable on shafts 14, 15 by abutment nuts 16, 17. An intermediate roll 18 is mounted on a pin 19 secured in a fork 20 slidable vertically, in guides 21, 22 in front and rear frame members 10, 11 by a screw 24 moving a saddle 23 to which lower ends of the fork 20 are secured. A transverse pressure roll 25, formed with an annular recess 25a, is mounted in a block 26 on a spindle 27 slidably mounted on the pin 19 and supported by a guide pin 28. The roll 25 is positioned on the pin 19 by a packing piece 29 between the block 26 and the fork 20. The roll 25 is adjusted vertically in the block 26 by a screw 31 and yoke 30. The main roller shafts 14, 15 are slidable in their bearings and tie members 33, 34 between the front and rear frames 10, 11 extend forwardly to carry, slidably thereon, a pressure bar 35 pressed against the ends of the shafts 14, 15 by nuts 36, 37, rotated on the tie members 33, 34 by a shaft 40, to load the work against the roll 25. The front frame 10 has a dip 10a at its centre to permit coiling. Specification 689,103 is referred to.
Patent GB-1262473-A (GB)
Title: Apparatus for forming a curved surface, struck at a required radius on a workpiece
Inventor: ROYLE STANLEY JAMES
IPC: B24B47/04
Filed: 1968-07-19
Abstract: 1,262,473. Machine tool details. S. J. ROYLE. 3 June, 1969 [19 July, 1968], No. 34659/68. Heading B3T.  A device, for forming a curved surface on a workpiece, comprises a tool or work-holder 7, slidably located in a block 4 carried on a frame 5, a lead screw 2 for sliding the frame through bearings 6 in a base 1, and means including an adjustable angle bar 8, for moving holder 7 through block 4. Screw 2 may be rotated by power means, or manually by a wheel 3. Holder 7 is slidable along a guide 17 which is slidable on the bed 1. Bar 8 is pivoted to frame 5 at 13, is adjustably fixed by a clamp 9, and is slidable through a bearing 11 which swivels on a rack 12. The latter meshes with a gear-wheel 14, to which a link 16 is adjustably fixed in a slot 19, by a clamp 18. In operation, bar 8, Fig. 1, is set by a scale 10 at the required angle, screw 2 is rotated so as to slide the tool or work-holder 7 along slide 17, bar 8 moves through bearing 11 so as to move rack 12 axially and rotate gear-wheel 14. This rotation causes link 16, slide 17, and holder 7 to move vertically, so that the tool or work, moves in a curved path. In a modification, bar 8, Fig. 2, is adjustably fixed on bed 1, and a table 20 carrying rack 12 is moved. A second work or tool holder 22 may be employed whose vertical movement is different to that of holder 26, and is produced by a second rack 21a movable with holder 26, which meshes with a pinion 21b coaxial with a gearwheel 21, which meshes with a rack on holder 22.
Patent GB-481771-A (GB)
Title: Improvements in and relating to air-space insulated electric cables
IPC: H01B11/00
Filed: 1936-12-17
Abstract: 481,771. Cables. FELTEN & GUILLEAUME CARLSWERK AKT.-GES. Dec. 17, 1936, No. 34675. Convention date, Jan. 2. [Class 36] In an air-space insulated cable having an outer conductor consisting of helically wound metal bands, over which is applied an oppositely wound wire armouring, the bands are wound in an overlapping manner, or with small spaces between them, so as to allow relative lateral movement of the bands when the cable is twisted.
Patent GB-337612-A (GB)
Title: An improved cooling vessel
IPC: A01J9/04
Filed: 1929-11-13
Abstract: 337,612. Bourne, H. R. M. Nov. 13, 1929. Receptacles with cooling- means.-A bottle, jug or other container 4 for milk &c. is placed in water in a porous earthenware vessel 1 having overflow holes 2 at such a height as to prevent the water from entering the container 4. A porous lid 5 has a flange 5a, preferably apertured and depending into the water so as to become wetted and serve as an additional evaporative surface.
Patent GB-1326423-A (GB)
Title: Process for the manufacture of phosphoric acid
IPC: C01B25/22
Filed: 1970-07-17
Abstract: 1326423 Phosphoric acid OCCIDENTAL PETROLEUM CORP 17 July 1970 [14 Jan 1970] 34705/70 Heading C1A Phosphoric acid is produced by reacting asmined phosphate rock in a slurry of water, phosphoric acid, H 2 SO 4 , CaSO 4  and part digested rock particles, wherein part of the slurry is continuously withdrawn and divided into two portions, that containing the slower settling particles being removed, and that containing the faster settling particles being returned to the slurry. The continuously withdrawn part of the slurry may be subjected to gravitational or hindered settling, centrifugation, or liquid cycloning before being divided, or may be withdrawn upwardly through a hindered settling zone such that the stream velocity is greater than the settling rate of the more completely digested particles but less than that of the less completely digested particles.
Patent GB-325804-A (GB)
Title: Improvements in or relating to window construction
IPC: B61D25/00
Filed: 1928-11-26
Abstract: 325,804. Mohun, J. L., and Piesch, H. Nov. 26, 1928. Vehicle windows; double windows; frames ; draught and weather excluding means forming part of sash.-A window construction for all-steel or other vehicles, or for buildings, comprises a frame insulated by felt &c. from the body, Fig. 3, and singles or double sashes, frameless except at the lower edges, Fig. 4, sliding in felt channel-guides 20, 21 enclosed by metal sheaths. The middle bead 7 of bent sheet metal is spring-pressed against the guides by spring tongues or by helical springs engaging projections pressed out from plates riveted to the guides, and is held against vertical movement by a pin 12 passing into the body member 13. Racks 17 are secured to flats on the middle bead and spring-pressed pivoted catches 30, Fig. 1, engage therewith to hold the sash closed or in an intermediate position. The catches are housed in casings on the bottom rail and are actuated by pivoted levers 33 situated adjacent to sash lifts 25. The sill member comprises flats 53, 53a, Fig. 4, for the sash rails and inclines 55, 55a with which engage the felt edgings 56, 56<a> reinforced and secured to the rails by metal strips 57, 57<a>. At the top, the panels are engaged by felt strips 78, 90, Fig. 34, folded into metal clips and secured to the inner and outer linings of the vehicle body. The guide channel of single sash constructions may be spring-pressed against the sash by any suitable blade or helical spring integral with or engaging a plate 69 or a flat on the bead 6. The felt guide may be extended to insulate the bead 6 from the body, Fig. 26. Fastening and sash holding means such as spring-pressed bolts 80a adjacent to sash lifts 58 may be used in conjunction with racks attached to the body for single sashes as shown in Fig. 15. The channel guide may have a projecting strip of metal or rubber and the guide may be L-shaped, the sash being engaged on the free side by a strip of lead 68, Fig. 23.
Patent GB-1033127-A (GB)
Title: Improvements relating to guns
IPC: F41A27/24
Filed: 1964-08-26
Abstract: 1,033,127. Gun mountings. VERWALTUNGSGESELLSCHAFT DER WERKZEUGMASCHINENFABRIK OERLIKON. Aug. 26; 1964 [Aug. 30, 1963], No. 34938/64. Heading F3C. [Also in Division F2] In a gun mounting the support 33 on an armoured vehicle for a rotatable mounted armoured cupola 35 is formed with an internally toothed crown 32 which is engaged by a manually operated toothed gear 45 for setting the gun in azimuth and is engaged by an elastically yieldable body 18 on a member 17 for locking the cupola in position. The member 17 which is movable radially of the crown 32 in a casing 9 secured to the cupola is actuated by a solenoid 10 to move a spring-loaded link 14 downwards so as to spread the arms 20, 22 and apply the body 18 against several teeth of the crown 32. The body 18 may be a block of rubber or of a metal fabric. A similar locking device 61, Fig. 2 (not shown), is provided for the elevation setting mechanism.