baber/WOPTO huggingface dataset:
Patent GB-598068-A (GB)
Title: Diaryl paraffins and their production
IPC: C07C17/26
Filed: 1945-03-15
Abstract: Diaryl paraffins are prepared by condensing an aryl compound having at least one replaceable hydrogen attached to the aromatic nucleus with a saturated aliphatic aldehyde of at least 2 carbon atoms in the presence of hydrogen fluoride as catalyst.  Aryl hydrocarbons and their hydroxy, chlorine, bromine or fluorine substituents may be used, also halogenated aldehydes. Hydrocarbons having nuclear methyl substituents, e.g. toluene and xylenes, are the most reactive. Others specified are benzene, naphthalene, diphenyl and ethyl xylenes.  Aldehydes include acetone, acetaldehyde, propionaldehyde, butyraldehyde, n-valeraldehyde, trimethyl-acetaldehyde, heptaldehyde and dichlor-, dibrom-, trichlor- and tribrom-acetaldehyde and butyl chloral.  Those of 8 carbon atoms or less are preferred.  The amount of aldehyde should not be more than 60, and preferably 50 per cent or less of the theoretical, especially when mixtures of hydrocarbons, such as m- and p-xylenes, are treated to react one, for example m-xylene, preferentially.  Temperatures for acetaldehydes are about - 20 DEG  to 65 DEG  C. or higher, preferably about 0 DEG  C., until the initial condensation has taken place, when an increase to 65 DEG C. may be permitted.  The weight ratio of HF to acetaldehyde is generally 1.4-5 : 1 when using the more reactive aromatics, but for diphenyl and chlor-aryl compounds may reach 50 : 1.  Inert solvents such as chlorinated hydrocarbons may be employed, for example when solid aromatic compounds are reacted. Chlor-aromatics such as chlorbenzene may be used owing to their low reactivity as compared to the hydrocarbons.  Superatmospheric pressures may be used to prevent volatilization of the reactants and catalyst.  Pure asymmetric diaryl ethanes such as di-(p-tolyl, o-xylyl, and m-xylyl)-ethanes, and 2-, 5-, 21-, 51-tetramethyl diphenyl ethane prepared by the process yield pure styrenes by the processes of Specifications 569,465, 592,867 and 598,069.  The diaryl paraffins are also used for insecticides and electrical insulating media.  Examples describe the condensation of toluol, xylenes, naphthalene, dissolved in chlorbenzene, and diphenyl, in chloroform, with paraldehyde. Using mixtures of m- and p-xylene, the former only is reacted, and the residual xylene enriched in the p-isomer is further reacted, in one case after first cooling to separate pure p-xylene which may itself be subjected to the condensation.  Samples are furnished of dihydroxy diphenyl ethane prepared from phenol and paraldehyde, and ditolyl butane from toluene and butyraldehyde.  The Specification as open to inspection under Sect. 91 comprises the use of any saturated aliphatic compound having a carbonyl group, acetone, methyl ethyl and methyl hexyl ketones being specified.  This subject-matter does not appear in the Specification as accepted.
Patent GB-138205-A (GB)
Title: Improvements in and relating to protective devices for electric circuits
Filed: 1919-03-17
Abstract: 138,205. British Thomson - Houston Co., (General Electric Co.). March 17, 1919. Safety apparatus for the discharge of high potentials.-Safety spark-apparatus for lighting discharge and other excess voltages consists of spherical electrodes 1, 2 protected from weather by metal shields 3, 5, the contour of which substantially follows surfaces which are equipotential with respect to the electrodes. Spark relief horns 7. 8 may be attached to the shields. In a modification, one of the electrodes is in the form of a ring 10, Fig. 3, and the other is a cylinder 11, the shields 12, 13 being shaped as shown.. An electrolytic cell is used in series with the gap. Specification 14482/15, [Class 40 (iii), Telegraphs, Electric], is referred to.
Patent GB-414314-A (GB)
Title: An electrically heated wax pot for waxing threads
IPC: D05B67/00
Filed: 1934-03-02
Abstract: 414,314. Waxing threads. MEISTER, F., ADRIAN, J., and ADRIAN, jun., J., 31, Feldbergstrasse, Oberursel, Taunus, Germany, (trading as ADRIAN & BUSCH). March 2, 1934, No. 6775. Convention date, July 6, 1933. [Class 140.] An electrically-heated wax pot for waxing threads comprises an inner chamber in which are located an electric heating device and thread guiding means. The inner chamber preferably contains a heating element and a thermostat in separate tubes, and thread guiding means carried on a separate detachable plate. The wax pot 1 has an inner chamber 14 in which is a tube 11 containing a heating element 33, a tube 12 containing a thermostat 30, the two tubes being connected by a perforated webbing 13 for purposes of heat transmission, and a detachable plate 17 having thread guiding means 18, 19. Wax is fed in through the funnel 2, and only the wax in the inner chamber 12 is kept melted. When the wax is sufficiently hot, the thermostat 30 causes the point 27 to rise and engage the lever 25 pivoted at 24, and so tilt the mercury switch 22 to break the circuit to the heater. The mercury switch and its lever are mounted on a second lever 26 pivoted at 28 for purposes of adjustment, a locking nut 34 being provided.
Patent GB-449817-A (GB)
Title: Improvements in road demarkation or traffic studs or the like
IPC: E01F9/06
Filed: 1935-03-05
Abstract: 449,817. Road-marking studs. JULIEN, J. D., 102, Atwood Road, Didsbury, Manchester. March 5, 1935, No. 6842. [Class 3 (ii)] A road stud has a head made up of a circular part and a part with a square or other quadrilateral contour with one part superposed on the other which is provided with a plain upper surface. As shown, the stud comprises a shank 1 having a square head 2 with a raised circular part 3 which may be plain or provided with concentric grooves 5 or a spiral groove. Projections 7 may be provided on the underside of the head. In modifications, the head 2 may be rectangular or diamond shaped. In a further modification, the head is circular and has a raised square part.
Patent GB-1380420-A (GB)
Title: Closeable containers having means for suppressing fire and or ex plosion
IPC: B64D37/32
Filed: 1971-03-15
Abstract: 1380420 Minimising fires in tanks DEFENCE SECRETARY OF STATE FOR 14 March 1972 [15 March 1971] 6862/71 Addition to 1341693 Heading A5A In a modification of the invention of Specification 1341693 a closeable container includes therein a plurality of openly reticulated foam pieces of 15-25 pores per linear inch, there being left externally of and between the pieces and within the container a free volume constituting more than 50% of the interior volume of the container, whereby in the event of fire within the container an unacceptable pressure rise is prevented. The foam pieces may be balls of foam, in particular hollow balls comprising a foam layer surrounding a hollow interior. The polyurethane foam of the parent Specification may be used. The pieces may be retained adjacent the inner side walls of the container in support netting. The container may also have a layer of openly reticulated foam covering at least part of its external surface. The container is particularly an aircraft fuel tank.
Patent GB-1237345-A (GB)
Title: Improvements in washing machines
IPC: D06F37/10
Filed: 1970-02-12
Abstract: 1,237,345. Washing machines. G. A. BRAUN Inc. 12 Feb., 1970 [13 Feb., 1969], No. 6910/70. Heading D1A. A washing machine has a wash drum which is rotatable about a horizontal axis for washing and spin-drying and is divided by walls 42 arranged tangentially of a rotary shaft 24 into three compartments each with an unloading door 68 and a loading door 70 adjacent a respective wall 42, a stationary shell 84 surrounding the drum and having a sump 86 and an arcuate opening 90 which extends above and below the drum axis and by the circumferential width of the doors 70 and 68 and is closable by a slidable door 92. The drum further comprises circular flat end plates interconnected by six tubular members 36, 38 and 40 and a perforated shell 66 and the doors 68 and 70 have side hinges. In use each compartment is unloaded by opening the door 68 adjacent the lower edge of the opening 90 when the laundry slides out on the inclined lower wall onto a chute or conveyor and is loaded by rotating the drum anticlockwise by say 40 and dropping laundry from a conveyor or chute through the opened door 70.
Patent GB-1367852-A (GB)
Title: V-belt transmission devices
IPC: F16H61/662
Filed: 1972-02-15
Abstract: 1367852 Expanding wheel gear C G HARD A F SEGERSTAD 15 Feb 1972 [22 Feb 1971] 6919/72 Heading F2D A centrifugally-closed expanding pulley 2, 3 on an engine-driven shaft 1 and driving a load such as a motor-vehicle through abelt and spring- loaded output pulley, is provided with a device to delay downshift movement towards open position, said delay device comprising a one-way clutch 39, subject to a braking action so that it brakes opening (downshift) movement but does not affect closing (upshift) movement of the pulley flange. The braking effect may be cancelled by kickdown and also full release of the usual accelerator pedal, by the brake pedal or by a separate control. A ratio hold control may also be provided. A splined pulley-flange 3 is moved axially towards an axially-fixed flange 2 by the outward movement of a pair of masses 14, each pivoted at the junction of two links 9, 10, one, 9, pivoted on a. plate 5 fast to the pulley shaft 1, the other, 10, pivoted to a toothed rack 13 radially slidable thereon, its outward movement turning a toothed segment 18, carrying a roller 19 which thrusts on a surface 20 of the flange 3 to shift the latter towards the flange 2. The return downshift opening movement is braked by the one-way spring clutches 39, each secured to one of the segments 18, and surrounded by a brake band 26 tensioned by a spring 28. The downshift braking is cancelled by axially thrusting, through a bearing (40), Fig. 6 (not shown), axial pins (35), which pass through the plate 5 and have chamfered ends which cam outwardly the springs 28, thus releasing the brake band tension to permit unrestricted downshift. The brake-release thrust bearing (40) is operated through a guided cable (42), Fig. 7 (not shown), either directly by kickdown of the accelerator (43); through a lever (48) by a separate control (46); or Fig. 8 (not shown), also by accelerator release. For ratio-hold, a control, not described, thrusts stop pins through the plate 5 to hold the racks 13.
Patent GB-558852-A (GB)
Title: Improvements in directional aerial systems
IPC: H01Q21/12
Filed: 1942-05-21
Abstract: 558,852. Directive wireless signalling. MARCONI"S WIRELESS TELEGRAPH CO., Ltd., and GREEN, E. May 21, 1942, No. 6926. [Class 40 (v)] A directional aerial system comprises a plurality of spaced dipole aerials Ai in a common plane and with their centres on a common straight line, each dipole having associated therewith a reflector Re and one or more directors Di, all the reflectors being on one side of the dipoles and the directors on the other, the spacing of the reflectors and directors being the same as that of the dipoles, one half of each dipole being connected near its centre to one feeder and the other half to the other feeder. The dipoles may be spaced apart by a half or whole wave length. The dipoles, reflectors and directors may be metal rods, adjustable in length and secured directly at their centres to a metal mast Mi or metal brackets Bi. In Fig. 3, open-wire balanced feeders are. used but the feeder may be enclosed inside the mast, if the latter is tubular, insulating glands being provided through which connections are made to the dipoles, Fig. 4 (not shown). A number of dipole systems such as shown in Fig. 3 may be arranged side by side and fed in phase.
Patent GB-1387591-A (GB)
Title: Inside rear view mirror assembly for a vehicle
IPC: B60R1/04
Filed: 1972-02-15
Abstract: 1387591 Rear view mirrors G F GIEBLER 15 Feb 1972 [28 Oct 1971] 6965/72 Heading B7J A "break-away" inside rear-view mirror comprises a mounting plate or base 12 secured by adhesive to a vehicle front windscreen 10, a support arm 18 formed at one end with a carriage 30 adjustable (in this case reciprocatingly) on the mounting plate and at its other end with a ball adjustably engaging a socket in an adjustable holder 32 for a mirror reflector, the carriage 30 being readily disengageable from the plate when receiving a predetermined impact and being readily replaceable on the plate. The plate is formed with a rack 16 engaged by a pinion 24 received in a slot 22 in the carriage 30 and rotatable by spindle 26 operable by a knob 28. Flexible tongues 20a, 20b of the carriage frictionally engage under lateral undercuts 14a, 14b of the plate 12. The parts may be made of plastics. In other embodiments the pinion is replaced by a friction wheel engaging a groove in the plate or the carriage is provided with a slit which may be opened or closed by a threaded spindle to decrease or increase the friction between the tongues and undercuts. According to a further embodiment the tongues may be adjusted by a spreading cam device described with reference to Fig. 8 (not shown). Other embodiments provide rotary motion between the mounting plate member and the support arm. In still further forms circular interengaging members on the support arm and mounting plate are adjusted in their frictional engagement by spreading screws as described with reference to Figs. 11 to 15 (not shown). The mirror reflector may be antidazzle as described with reference to Fig. 15 (not shown).
Patent GB-1126073-A (GB)
Title: Improvements in or relating to rotary electric machines
Inventor: RAWCLIFFE GORDON HINDLE
IPC: H02K23/66
Filed: 1966-02-17
Abstract: 1,126,073. Change-pole machines. NATIONAL RESEARCH DEVELOPMENT CORP. 30 Jan., 1967 [17 Feb., 1966], No. 7005/66. Heading H2A. A commutator machine is arranged for polechanging by reversing half of the stator field and lifting or disconnecting some of the brushes used in the lower pole-number. The machine may be of any sort, A.C. or D.C., and stator and rotor may be interchanged, and pole-changing may be by pole-amplitude modulation. In its simplest form, a 2/4 pole machine has an armature of 2/3 pitch for two poles and so 4/3 pitch for four poles, thus being inductive to both. In the 2-pole connection, only two of the four brushes are used, alternate brushes being lifted from the commutator, but the effective number of armature conductors in series in this connection is doubled so that the machine runs slower. For higher pole-numbers, brushes which are used in parallel but lifted for the lower pole-number, may be permanently shorted together (Fig. 3, not shown). The field windings may be wound on salient poles (Fig. 2, not shown) and interpoles may be used. Alternatively (Figs. 4 and 5, not shown) the field winding may be distributed in slots, and it is described (Figs. 4, 5 and 5a, not shown) how a single-phase winding derived from a threephase winding by the omission of one phase, may be connected to provide two or eight poles. Where salient poles are used, these may be graded as regards pole amplitudes and poll width, for the higher pole numbers. Alternate poles are narrower but more strongly excited (Fig. 7, not shown), and a similar effect may be produced in distributed windings by grading the pole-amplitudes by coil grouping.
Patent GB-125762-A (GB)
Title: Improvements in and relating to Electric Ignition Devices for Internal Combustion Engines.
Inventor: KENNINGTON WILLIAM OSCAR
Filed: 1918-04-25
Abstract: 125,762. Kennington, W. O. April 25, 1918. Systems, electric; contacts, arrangement of ex, ternal.-For the purpose of rendering negligible the sparking impulse if the engine tends to rotate in a counter-normal direction, a second interrupter 16, 17, having no condenser across its terminals, is inserted in series with the usual interrupter 14, 15 and is actuated by a second cam 9 arranged to open the contacts 16, 17 slightly later than the cam 8 opens the contacts 14, 15. If the engine reverses, the contacts 16, 17, opening slightly the earlier, nullify the action of the contacts 14, 15. and owing to the absence of condenser action, the sparging impulse produced is insumcient for ignition. The impulse may be further weakened by making the secondary contacts 16. 17 of a material such as nickel instead of platinum or tungsten. Reference has been directed by the Comptroller to Specification 122,184.
Patent GB-307302-A (GB)
Title: Improvements in and relating to the manufacture of plate and sheet glass
IPC: C03B13/02
Filed: 1929-03-04
Abstract: 307,302. Heuze, C. March 3, 1928, [Convention date]. Roller-way conveyers. - Relates to means for conveying a strip of glass through a leer. According to the invention the strip, as it leaves the rolling-apparatus, is received on a transporting table with a surface formed of parallel rollers, and the speed of these rollers is varied between the speeds of 'rolling and annealing, the strip being maintained in constant movement on the table until it enters the leer. Two transporting tables 6 are mounted on rails 8, 9 so that they can be moved parallel with the rolling-apparatus to and from the front of the leer. Each table has its upper surface formed as a roller-conveyer, the rollers 26 being rotated by motors 10, 14, and the speed of the rollers is variable and their direction of rotation reversible. In a modified construction, the rollers may be rotated by connecting them with the driving-mechanism of the rolling-apparatus and of the leer rollers, by means, for example, of clutches 16, 17, connected with the table rollers 26 and the leer rollers respectively. which engage when the table is in line with the leer. A motor 14<1> may be provided to assist the clutch drive. In another modified construction, the rails on which the rolling-apparatus and the tables are mounted are not straight, but are in the form of arcs of a number of concentric circles.
Patent GB-468899-A (GB)
Title: Improved fastener suitable for application to corsets and other garments
IPC: A44B13/00
Filed: 1936-03-09
Abstract: 468,899. Hook - and - eye fastenings. BIENVENU, A. H. J. March 9, 1936, No. 7059. Convention date, March 8, 1935. [Class 43] The lateral bar 9 of the eye element and /or the return bends 6 of the hook element are de. pressed an amount equal to the thickness of the wire from which they are made so that the two elements interengage snugly. The tip of the hook 2 may be slightly flattened at 11, and is curved outwards, its legs 3 being reversely curved before merging into the return bends 6. Recesses are formed in the legs 3 and in the opposite faces of the return bends 5, and also in the lateral bar 9 and in the opposite faces of the side legs 8 of the eye element, these recesses occurring where the elements cross. The legs 3 may be close together and the lateral bar 9 may be flattened. The Specification as open to inspection under Sect. 91 comprises also a form of hook and eye in which the recesses are absent. This subjectmatter does not appear in the Specification as accepted.
Patent GB-638750-A (GB)
Title: Improvements in the manufacture of drying oil substitutes or extenders
Filed: 1947-03-13
Abstract: A drying oil substitute (or an extender for a natural drying oil) which may be used with pale pigments, is produced by blending an aromatic fraction obtained from petroleum by solvent extraction, having an iodine value (Wijs) of not less than 50, with a minor proportion of polymerized higher-boiling constituents removed from cracked gasoline, having a viscosity (Redwood 1 at 140 DEG  F.) of not more than 100 seconds and an iodine value of not less than 200. Both the aromatic extract and the polymer may be treated with decolourizing clay prior to the blending.  In an example, cracked gasoline was treated with clay and the product was distilled to remove gasoline.  The bottoms were then further distilled until the residue had a viscosity of about 60 seconds-this necessitated raising the temperature in the still to about 250 DEG  C. and reducing the volume by about half. The polymer so obtained had an iodine value of 299.  The aromatic extract was obtained from a wax-free, naphthenic, lubricating oil distillate by the Edeleanu process, and was treated with small quantities of sulphuric acid (85-90 per cent), lime, and bleaching clay.  The refined extract had an iodine value of 66. The refined extract when mixed with 1 per cent of polymer had a drying time of 36 hours; and had a drying time of 20 hours when mixed with 10 per cent of polymer.  If the polymer is refined by percolating it (dissolved in straight-run gasoline) through clay, the drying times are substantially unaffected, but the colour of the blend is appreciably lighter.
Patent GB-125771-A (GB)
Title: Improvements in and relating to Projectiles.
Inventor: ROBINSON HUGH MANSFIELD
IPC: F42B30/04
Filed: 1918-04-26
Abstract: 125,771. Robinson, H. M. April 26, 1918. Projectiles. - Relates to projectiles adapted to be discharged from a rod or stem by means of a cartridge situated in a central tube a in the projectile, and consists mainly in arranging the cartridge b<1> in front and clear of the conoidal nose of the projectile c. The tube a extends backwards and carries longitudinal or inclined vanes k which are of uniform width or increase in width rearwards. The vanes are welded to the tube or are riveted to collars l on the tube. The front collar may be screwed to the tube and secured thereto by grubscrews; and the rear collar may merely fit smoothly over the tube. The vanes may also be brazed to the body of the projectile, the rear of which may be of conoidal shape. An auxiliary propellent rocket charge r may be used adapted to be ignited by the flash from the cartridge b<1> through a tortuous passage in the tube a or through a fuse u extending longitudinally between the tube a and the base of the rocket charge The bursting charge q is fired by a short fuse z from the rocket charge or by an ordinary time fuse. A percussion fuse is also provided. Several such projectiles may be strapped together on centring distance-pieces, around a central one fitting over the discharging stick; and the bursting charges of these projectiles may be combined into a single charge.
Patent GB-350431-A (GB)
Title: Improvements in or relating to mechanical projectors for use in playing games
IPC: A63B65/12
Filed: 1930-03-04
Abstract: 350,431. Table games. MURPHY, T. and COLLINS, L. W. J., 158, Latimer Road, Notting Hill, London. March 4, 1930, No. 7107. [Class 132 (ii).] A mechanical projector for use in playing games of the kind in which a coin or disc is projected towards a stationary or moving objective comprises means for receiving the coin, spring means for expelling the coin therefrom, and counting or registering mechanism operable upon insertion of the coin. The projector comprises a tray 22 slidable within a casing 12 and retractable against the action of a spring 31 by means of a knob 32. A coin 28<1> is inserted into the tray through registering slots 27, 28 in the casing and tray, respectively. As the coin enters, it makes contact between the metal end-wall of the tray and a spring 29 mounted on the insulated side wall of the tray, thus actuating an electrically operated counter. The casing is adjustable for aiming purposes about a pivot 19 adjacent the edge of a table.