baber/WOPTO huggingface dataset:
Patent GB-935082-A (GB)
Title: Improvements relating to yarns
IPC: D02G1/02
Filed: 1959-01-27
Abstract: 935,082. Spinning and finishing yarns. BROCKLEHURST - WHISTON AMALGAMATED Ltd., and V. CASTLE. Jan. 21, 1960 [Jan. 27, 1959], No. 2931/59. Drawings to Specification. Class 120 (3). A compound yarn, in which high stretch and bulk properties due to helical crimp may be developed when the yarn is released, is produced by intertwisting at least two " thermoplastic " yarns, the doubling twist being in the same direction as the twist in the component yarns, setting the doubled yarn in the twisted condition, and then reverse twisting the doubled yarn to an extent which exceeds the original doubling twist so as to leave a reverse twist of at least four turns per inch in the compound yarn. The remanent twist is dependent on the count, and increases with the fineness, of the yarn. The component yarns may be staple and continuous filament yarns of acrylics, polyamides or polyesters, or of wool. The doubled yarn may be set and/or relaxed under dry, moist or wet heat conditions.
Patent GB-1098131-A (GB)
Title: Electrical insulation
Inventor: REES DONALD ERNEST WILLIAMS
IPC: H01B3/30
Filed: 1964-01-23
Abstract: 1,098,131. Insulated conductors. MIDLAND SILICONES Ltd. March 12, 1965 [Jan. 23, 1964], No. 2942/64. Heading H1A. A conductor is insulated by wrapping with a film of a flexible substantially moisture impervious organic material at least one surface of which is coated with a silicone rubber composition. The organic material may be polyethylene, polyethylene terephthalate, cellulose acetate, cellulose triacetate, P.T.F.E., a polyimide, a polybenzimidazole or polyoxadiazole. The silicone rubber composition may comprise a vulcanized organopolysiloxane or a semi- or non-vulcanized polysiloxane, may contain fillers or other additives, cross-linking agents and condensation catalysts, boron compounds such as alkyl borates or boric acid to impart self adhesion and preferably exhibits the property of " cold flow " under pressure. A composition containing two vulcanizing agents which act at different temperatures may be applied to the organic substrate and heated to activate one of the agents. The vulcanization is completed after application to the conductor. The composition may be applied from a solution or dispersion in e.g. toluene or xylene. A primer such as an alkoxysilane improves the bonding between the substrate and the silicone rubber composition.
Patent GB-1436799-A (GB)
Title: Endless-track vehicles and methods of steering them
IPC: B62D55/00
Filed: 1974-01-22
Abstract: 1436799 Steering endless track vehicles J T T POHJOLA 22 Jan 1974 [26 Jan 1973] 02956/74 Heading B7H In an endless track vehicle having a track mat 10 which laps over front and rear rolls 4, the vehicle is turned by turning the front roll about a vertical axis whilst the rear roll is either held stationary or turned at a substantially slower rate about a vertical axis and in opposite direction to the front roll. As shown in Fig. 2 the vehicle comprises a chassis 1 with front and rear frames 2, 3 respectively pivoted thereto by respective universal joints 6, 7. Each frame has a shaft 5 carrying rolls 4 for guiding the track mat 10. Steering arms 8, 9 are rigidly attached to frames 2, 3 respectively, the arm 9 being attached at its other end by a pivot 15, Fig. 3, to a T-shaped stay 14. Stay 14 carries a roll 16, which enters the fork 13 of the steering arm 8, and cam followers 17 which rest against a shaped cam 19 fixed to chassis 1, when a steering force F is applied, for instance at fork 13, the stay 14 will turn about pivot 15 and arm 8 will turn with front frame 2 about pivot 6. The roll 16 reaches an extreme position and further turning will cause one of the two cam followers 17 to travel onto the part 19a of cam 19 whereby the arm 9 begins to turn, about pivot 7, simultaneously with the rear frame 3. In a modification the cam 19 is so shaped as to allow the rear arm 9 to turn even before the front arm 8 has reached the said extreme position. The rear end of track mat 10 turns with a slower turning rate than the front end since arm 8 is longer than arm 9. A motor (20) Fig. 1, (not shown) is mounted on a frame (3a) which turns with the rear frame about pivot (11). Chains (21), (22) transmit power from the motor (20) to the rear end rolls 4.
Patent GB-199756-A (GB)
Title: Improvements in notching or like presses
IPC: B21D28/22
Filed: 1922-02-02
Abstract: 199,756. Cooper, A. E., and Jones, C. Feb. 2, 1922. Dynamo-electric machines.-A notching &c. press for laminµ used in electrical machines has two tools d carried by brackets a<1>, a<2> on opposite sides of a cylindrical slide a carried in a guide b. The upper part of the slide is rectangular and is engaged by flat extensions of the guide b, Fig. 2, and strips f. The slide is reciprocated by a crank shaft k and threaded connecting rod g which is rotated by its squared end for adjustment and has a ball end g' to allow oscillation. The rings or segments being notched are indexed by dividing-mechanism not shown.
Patent GB-579863-A (GB)
Title: Distance indicating radio detection system
IPC: G01S7/282
Filed: 1944-02-18
Abstract: 579,863. Radiolocation. STANDARD TELEPHONES & CABLES, Ltd. Feb. 18, 1944, No. 3111. Convention date, Feb. 20, 1943. [Class 40 (v)] [Also in Group XXXVI] In a pulse operated radiolocation system the range of a selected target is indicated at a remote point in terms of the pulse recurrence frequency which is controlled in accordance with the range of the target. A modulator 12 and transmitter 10 radiate pulses 11, which are received after reflection by receiver 14 which is blocked during emission of pulses by circuit 18. The received echo pulses are displayed as vertical deflection on the oscillograph 21, the time base for which is provided by generator 20, triggered by the modulator. In order to select a particular echo pulse such as 30 and to determine the time interval between it and the transmitted pulse, an adjustable delay device 32' of the type; for example described in Specification 571,772 is fed with the modulator pulse, and the delayed pulse 35 shaped in circuit 34, is fed to the vertical deflecting plates of the oscillograph and aligned with the peak of a selected signal. The adjustment of delay device 32 is then a measure of the range of the selected target and the control of device 32 is ganged with the timing control of the modulator to cause the pulse recurrence frequency to assume a value indicative of the target range. At points remote from the transmitter are receivers adapted to receive the transmitted pulses, comprising flip-flop circuits which generate pulses of constant area corresponding to each transmitted pulse, which are integrated by a meter the indication of which is then proportional to pulse recurrence frequency, and which may be calibrated in terms of range. The range indications and the rate of change of the recurrence frequency can be employed to predict the course of a target.
Patent GB-1099417-A (GB)
Title: Method of incorporating photographic ingredients into photographic colloids
Inventor: PAUW ALFONS JOZEF DE
IPC: G03C7/388
Filed: 1965-01-25
Abstract: 1,099,417. Incorporating photographic ingredients into colloids. GEVAERT-AGFA N. V. Jan.25, 1965, No.3152/65. Heading G2C. A colour coupler or mask-forming compound is incorporated into a hydrophilic photographic colloid by forming a solution of the coupler or compound in tetrahydrofuran, blending the solution with the colloid and removing all the tetrahydrofuran. The colloid may be a light-sensitive silver halide emulsion or it may be a colloid which is subsequently added to a light-sensitive silver halide emulsion. The tetrahydrofuran may contain formamide and/or tetrahydrothiophen-1: 1-dioxide and other solvents such as ethanol, isopropanol and ethylene glycol monomethyl ether, and may be removed by washing the colloid, by evaporation under vacuum or by evaporation after coating the emulsion composition. Moistening agents such as saponin, aryl-alkyl sulphonates and polyoxyalkylene compounds may also be present. Colloids specified are gelatine, polyvinyl alcohol, zein and casein.
Patent GB-1136714-A (GB)
Title: Apparatus for and a method of successively fitting taut screens to a frame
IPC: B41F15/36
Filed: 1966-01-24
Abstract: 1,136,714. Stencils. LUXAR S.A.R.L. 24 Jan., 1966 [25 Jan., 1965], No. 3200/66. Heading B6C. An apparatus for successively fitting taut screens, e.g. silk screens for printing, to a frame comprises supporting means for the frame, screen stretching members actuable by a pressure fluid to stretch each screen before it is attached to the frame, frame compressing members actuable by a pressure fluid to impart a preliminary compression to the frame in a manner opposed to the stretching forces before attachment of the screen and means for supplying a pressure fluid to both members to subject the frame to compression forces proportional to the stretching forces exerted on the screen. The pressure fluid actuable means preferably consist of a series of jacks mounted on a table, each of said jacks comprising traction means for pulling the screen and pressure means for compressing the frame, e.g. the jacks may each include a cylinder and a piston slidable in the cylinder, the stretching and compressing being carried out one by the cylinder and the other by the piston. The table may be provided with two sets of mutually perpendicular guideways formed between guide heads, each of the jacks being slidable along their respective guide paths. In Fig. 3, a single jack is shown. A cylinder 6 is provided in a support 5. The cylinder contains a piston 7 connected to a piston-rod 8. Rod 8 is connected by a transverse bar 13 to spring strip 16 which is in turn connected to assembly 17 which assembly forms a clamp for attaching to the screen 4 which is to be stretched. The screen 4 holds one edge of the frame 35 in the stepped portion 34/36 provided in the cylinder support 5. The chamber 11 at the right hand end of cylinder 6 behind the piston 7 can be supplied with compressed air as the " pressure fluid ". A base-plate 41 is provided on each jack support to slide under the overhanging top plates 39 of circular guide heads (38, Fig. 2) so that each jack may slide backwards and forwards between two parallel sets of guide heads but is held on to the table 1. Opposite rows of jacks in their respective guides may be fed simultaneously with compressed air resulting in regular stretching of the screen 4 and in compression of the frame with pressure proportional to the traction exerted on the screen.
Patent GB-579637-A (GB)
Title: Improvements in filter frame
IPC: A47J31/043
Filed: 1945-02-08
Abstract: 579,637. Filters. DEHN, F. B. (Silex Co.). Feb. 8, 1945, No. 3219. [Class 46] A filter frame suitable for use with a coffeemaker is made of wire and comprises an upwardly-extending handle 9, Figs. 1 and 2, a ring-shaped portion 10 and an arched projecting portion 12 the point of which is passed through the filter cloth. The ring portion clamps the cloth against the sides of a recess 8 in the bowl 5 and the portion 12 supports the cloth away from the outlet 6. In the construction shown in Fig. 6 the projection 12a has a hook 21 supporting the centre portion of the cloth.
Patent GB-142910-A (GB)
Title: Improvements in and relating to drills
IPC: B23B39/00
Filed: 1919-02-10
Abstract: 142,910. Fogleman, E. L. Feb. 10, 1919. Drilling-machines.-A pneumatic or electric motor driven drilling-machine is mounted on wheels so that it can be moved over the plate &c. to be drilled by means of handles which are pressed down to feed the drill axially. The motor 22, Fig. 4, has secured to its laterally projecting trunnions 21, arms 28 connected by a bar 29 moving in slots of a frame 32 pivoted on the axle 12. The frame has also a sleeve 36 to guide the chuck 35, an adjustable leg 41, and a rearward arm 47 connected to the handle framing 11 by a spring 49. This spring is assisted by a compression spring 34 arranged between the trunnions 21 and the framing 11, and by weights 52 in a box 10 forming part of the framing 11, which is also pivoted on the axle 12. The trunnions 21 engage horizontal slots in the framing 11, and an adjustable roller 26 engages a curved bar 27, so that the motor and drill are normally held in the raised position limited by the adjustable stop 55, as shown; but if the handles 14 are pressed down, the drill is fed into the work on which the apparatus rests. If the handles 14 are raised, the leg 41 is lifted, and the apparatus may be wheeled to the place desired. Fluid pressure may be supplied to the motor from a pipe through a valve mounted in one of the handles; or an electric motor may be employed, the switch being arranged on one of the handles 14.
Patent GB-570791-A (GB)
Title: Improvements in or relating to lamp structures
IPC: F21V11/00
Filed: 1944-02-22
Abstract: 570,791. Lamps for illuminating instrument dials &c. STEVENS, A. H. (Electronic Laboratories, Inc.). Feb. 22, 1944, No. 3284. [Class 75 (iv)] [Also in Group XXXVII] A lamp suitable for use in aircraft for illuminating instrument dials, maps, &c., comprises a fluorescent type lamp 6, arranged in a two part cylindrical casing 1, 2 fitted at the end with a primary and secondary shutter, the primary shutter being movable from a fully open to a fully closed position in which only light rays of a predetermined wavelength can issue and the secondary shutters being then movable to cut off or reduce to a minimum the rays of predetermined wavelength. The predetermined wavelength may be that of ultra-violet, or nearultra-violet rays to illuminate indicators coated with fluorescent material or near-infra-red rays not visible from a great distance. The shutters may be mounted at the end of the casing in a ring 26 and consist of aperture discs 33, 44 of a material pervious only to light rays of the predetermined wavelength and iris diaphragm segments 53 impervious to all rays pivoted to a ring 50 and having pins 55 engaging radial slots 52 in flange 51 on the casing. Rotation of the ring 26 operates through a ring 31 first to turn the disc 33 relatively to the disc 44 till the openings 34, 35 in the disc 33 cease to register with the openings 45, 46 in the disc 44 and then to turn a ring 41 engaging the ring 50 to close the iris diaphragm. The lamp 6 is mounted in the casing 1, 2 by a cup 4 supporting on guide posts 10 a spring-pressed plate 7 carrying a lamp switch consisting of a base 12 and cap 18 of insulating material arranged on a central post 19. To start the lamp the cap 18 is turned to the "on" position and pressed inwards for a short time to cause a conical contact member 22 on the post 19 to complete at contacts 23, 24 the circuit for heating the lamp cathode 6b.
Patent GB-115417-A (GB)
Title: Improvements in or relating to Automatic Apparatus for Shaking Snow from Electric Conductors.
Inventor: CISARI VIRGINIO
IPC: H02G7/16
Filed: 1918-02-25
Abstract: 115,417. Cisari, V. April 30, 1917. [Convention date]. Clearing snow from conductors. - Electric conductors are freed from snow by a shaking apparatus automatically operated by the weight of the accumulated snow. In the construction shown in Fig. 5, the conductors are carried by the insulator-supporting arm 21 supported from the pole or wall 19 by means of brackets 20 and springs 26. The arm 21 is provided with abutments 22 which engage the spring- controlled levers 23 when the conductors become loaded with snow. As the load increases, the levers 23 are rotated until the abutments are free, when the arm 21 drops suddenly and the snow is removed by the consequent shaking. The springs 26 restore the arm to its normal position. The bevelled end portions of the levers 23 are made separate from and pivotally mounted on the levers to facilitate the upward movement of the abutments to their normal position. In the modified arrangement shown in Fig. 4, the levers are controlled by springs wound on drums 8<1> which carry grooved disks 14 connected to arms 17 on the conductor support 3. A flat spring 18 fixed to the frame 1 engages the periphery of the disks in which notches 15 are made. By this arrangement, the springs 8' give a double shake action owing to the falling abutment 4 suddenly releasing these springs by striking and withdrawing the spring 18 from the notches 15 in the disks 14.
Patent GB-462209-A (GB)
Title: Manufacture of ketones of the pyrene series
Filed: 1936-02-04
Abstract: Monoketones of the pyrene series are made by reacting pyrene at a temperature below 50 DEG  C. in presence of benzene, toluene, chlorbenzene or tetrachlorethane and in presence of a condensing agent such as aluminium or anhydrous ferric chloride with at least one molecule of a halide of a mono-carboxylic acid containing the grouping <FORM:0462209/IV/1> Acids specified are benzoic acid, halogenated benzoic acid, toluic acids, a - and b -naphthoic acids, cinnamic acids, pyridine-carboxylic acids or acrylic acids.  The products are vat-dyestuff intermediates.  An example describes the reaction of benzoyl chloride (or p-bromo-benzoyl, a -naphthoyl, p-toluyl or cinnamoyl chlorides) with pyrene in benzene in presence of aluminium chloride.
Patent GB-1016180-A (GB)
Title: Arrangement for the continuous feeding of fire arms such as machine guns and guns bymeans of an ammunition carrier located underneath the support of the gun carriage
IPC: F41A9/04
Filed: 1964-08-21
Abstract: 1,016,180. Reciprocating conveyers. BREDA MECCANICA BRESCIANA S.p.A. Aug. 21, 1964 [Feb. 28, 1964], No. 34320/64. Heading B8A. [Also in Division F3] In an arrangement for feeding ammunition to guns (see Division F3) cartridges 8 are stored on a series of shelves, on the top surface of which are movable by means of a speed reducing gear 15/ 1 , rod 15/ 2  and a bell-crank 15/ 3  carriages 12 provided with elastic teeth 13 for engaging the cartridges, elastic teeth underneath each half preventing return movement of the cartridges. The cartridges are thus moved past one tooth 13 for each oscillation of the carriages and are moved off the end of the carriage by a lever 19 on to the bucket chain 9, an abutment system preventing such movement unless the number of empty spaces on the chain equals the number of shelves.
Patent GB-489731-A (GB)
Title: Manufacture of tertiary aliphatic amines
IPC: C07C209/64
Filed: 1937-02-05
Abstract: A nickel catalyst activated with chromium, copper, magnesium oxide or aluminium oxide is mentioned as a hydrogenating or dehydrogenating catalyst.  A typical catalyst is prepared by impregnating precipitated nickel carbonate with a small proportion of ammonium chromate, depositing the mixture on granular pumice, and reducing it with hydrogen.ALSO:Tertiary aliphatic amines are obtained by passing a vaporized mixture of a primary and a secondary aliphatic amine at a temperature below 300 DEG  C. over a metallic hydrogenating or dehydrogenating catalyst.  Preferably, the reaction is effected between 100 and 200 DEG  C. and an activated catalyst is used, e.g. a nickel catalyst activated with chromium, copper, magnesium oxide or aluminium oxide.  The amine mixture advantageously contains about 1-1,5 mol. of secondary amine per mol. of primary amine. The amines may have the same or different alkyl radicles, and more than one primary and/or more than one secondary amine may be present.  The reaction may be effected at any desired pressure, and hydrogen or other gas or vapour which does not participate in the reaction may be included in the mixture.  The reaction products may be separated by fractional cooling.  In an example, a mixture of mono- and di-ethylamine is passed with hydrogen at 140 DEG  C. over a catalyst prepared by impregnating precipitated nickel carbonate with a small proportion of ammonium chromate, depositing the mixture on granular pumice, and reducing it with hydrogen; the products are passed in succession through cooling devices cooled with water, brine and solid carbon dioxide, whereby triethylamine, unchanged mono- and di-ethylamine, and ammonia are successively eliminated; the triethylamine is purified by fractional distillation, and the mono- and di-ethylamine may be returned to the process; tributylamine is similarly obtainable from a mixture of mono- and di-butylamine.
Patent GB-625970-A (GB)
Title: Improved method for the production of bottle capsulcs, cups or like containers
IPC: B65D41/62
Filed: 1946-02-04
Abstract: 625,970. Bottle capsules; non-metallic hollow-ware. MUGUET, F. Feb. 4, 1946, No. 3501. [Classes 66 and 125(iii)] Bottle capsules, cups or like containers are made by winding on a mandrel a sheet of extra thin material 1, such as metal, paper, or " Cellophane " (Registered Trade Mark), previously cut out to the required form, and having at least one edge adhesive, and flanging on the head of said mandrel the extremity of the material thus wound so as to form the end 5 of the capsule or container. The adhesive may be in the form of a strip placed between the overlapping edges during winding, and the cementing may be effected by electric heating. A disc 6 having an adhesive lining may be applied to the end 5 by a heated punch which may also perform a stamping or printing operation. The finished capsule or container may be ejected from the mandrel by means of compressed air.
Patent GB-917541-A (GB)
Title: Method for making a laminate article, and the laminated article
Inventor: STRICKLAND EDWARD T
IPC: B29C53/80
Filed: 1959-02-02
Abstract: A hollow laminated article is made on a mould, of which at least part tapers along the mould, by providing over the mould a layer of binder-coated unwoven fibrous material applied under tension along a helix coaxial with the mould, giving windings in planes substantially normal to the axis of the mould, with slide-resisting material between the mould and the fibrous material, providing a layer of controlled thickness and controlled distribution comprising binder-coated fibrous material applied axially and of unequal lengths, and solidifying the binder. Further helical and axial layers may be applied, up to 20 to 40 layers in all.  The binder may be a thermo-setting synthetic resin, e.g. a polymer of triallyl cyanurate, or a polyester or epoxy resin.  The fibrous material may be a roving of glass, quartz or asbestos fibres, and the slide resisting material granular aluminium oxide.  The mould may be first coated with a parting agent, and the slide-resisting material applied directly over it, or over a layer of binder.  The Specification includes detailed descriptions of two embodiments.  In one, the axially disposed fibres are first formed into several gussets each comprising rovings of unequal lengths.  These gussets are placed on the mould with their edges touching, and a layer of helical fibre wound on over them.  In the other embodiment, slidable rods are provided around the mould, each carrying devices for engaging and cutting off loops of roving from sources mounted around the mould.  These serve to draw loops of roving along the axis of the mould by unequal distances, and to cut off and release each loop just before its end is covered by the windings of a layer of axial fibres.  A final helically wound layer of material, e.g. nylon, more elastic than that of the other helical layer or layers may be wound over the other layers, and removed after the binder has solidified.  The moulds may be of conical or ogival shape, and the articles produced may be used as radomes.