baber/WOPTO huggingface dataset:
Patent GB-588648-A (GB)
Title: Process for moulding polytetrafluoroethylene
IPC: B29C43/32
Filed: 1945-03-02
Abstract: Shaped articles of polytetrafluoroethylene are made by subjecting discrete particles to pressure and thereafter heating the shaped product in a closed, closely-fitting chamber to a temperature of 320-400 DEG  C. under autogenous pressure.  The product may be quenched in water or liquid nitrogen or allowed to cool gradually. The chamber, e.g. a cylinder, may be provided with a small hole through which excess polytetrafluoroethylene can extrude.  The articles may be agitator paddles for chemical vessels, pistons and diaphragms of pumps or electric insulators. Specification 583,418 is referred to.ALSO:Shaped articles of polytetrafluoroethylene are made by subjecting discrete particles to pressure and thereafter heating the shaped product in a closed closely fitting chamber to a temperature of 320 DEG -400 DEG C. under autogenous pressure.  The product may be quenched in water or liquid nitrogen or allowed to cool gradually.  The chamber, e.g., a cylinder, may be provided with a small hole through which excess polytetrafluoroethylene can extrude.  The articles may be agitator paddles for chemical vessels, pistons and diaphragms of pumps or electric insulators. Specification 583,418, [Group IV], is referred to.
Patent GB-1493706-A (GB)
Title: Bonded fabrics of nylon-6 filaments
IPC: D04H3/12
Filed: 1975-02-07
Abstract: 1493706 Non-woven fabric LUTRAVIL SPINNVLIES GmbH & CO 7 Feb 1975 [9 Feb 1974] 5241/75 Heading D1R A bonded non-woven fabric comprises continuous nylon-6 filaments which have an average molecular orientation of up to 80% of the theoretical maximum, the orientation being produced by drawing, and whose crystalline regions have the gamma (hexagonal) crystal structure, these filaments comprising at least the major proportion by weight of the fabric. Some polyester fibres may be included. The binder may be polyacrylate or polyurethane. Molten nylon-6 is spun through holes in spinneret(s) I and fed by jets of primary air 2 heated to the same temperature 270C as the melt, into duct 4. The filaments 3 are drawn by jets of tertiary air 6 at 80C and 12 g/m<SP>3</SP> humidity blown through slits 5 so that secondary air 7 at 45C and 8 g/m<SP>3</SP> humidity is drawn into duct 4. The drawn filaments of 0.4 to 3 dtex are collected in fine loops on belt 9 with the aid of suction. The bundle of filaments is reciprocated in the collecting zone 8 by the action of the air streams or by moving the duct. The filaments are smaller by sucking air at 45C and 8 g/m<SP>3</SP> humidity through the fabric in chamber 15. This causes them to form arcs in planes perpendicular to the belt 9. A foamed aqueous polyacrylate dispersion is applied to one side of the fabric at the nip of the rollers 20, the fabric dried by hot air blown against it from above and optionally also from below the other side of the fabric is impregnated, the fabric again dried and then heated a third time to cross-link the binder. A 35 g/m<SP>2</SP> fabric takes up 10 g/m<SP>2</SP> of binder at each application. The binder is concentrated at the surfaces of fabric which is thus rendered scuff resistant.
Patent GB-1036732-A (GB)
Title: Improvements in or relating to cutting cloth or other material in sheet form
Inventor: AINSWORTH JOHN RICHARD
IPC: B26F1/40
Filed: 1963-04-24
Abstract: 1,036,732. Cutting-out presses. SAMCOSTRONG Ltd. April 24, 1963, No. 5269/65. Divided out of 1,036,731. Heading B4B. The subject matter of this Specification is contained in Specification 1,036,731 but the claims differ.
Patent GB-312249-A (GB)
Title: Improvements in or connected with window blinds
IPC: E06B9/64
Filed: 1928-02-20
Abstract: 312,249. Elliott, F. C. Feb. 20, 1928. Window blinds.-A blind roller is bodily raised and lowered by cords arranged in a closed circuit, and attached to end bearing E, E<1> carrying the roller, the cords being arranged above the roller and at the sides of the window frame. Figure 2 shows an arrangement which permits raising and lowering of the blind roller and also the rolling or unrolling of the blind. An endless cord F is carried by a pulley A<3> on the roller and a loose pulley block H the cord passing under a pair of pulleys G<1> at the bottom of the window frame. A cord C is attached to the bearing E<1> and passes over pulleys D<4>, D<3> above the roller, under a pulley D<2> at the bottom of the window frame and thence up to the bearing E. A cord C<1> extends from the bearing E over the pulleys, D<3>, D<4> to the pulley block H. The two pulleys G<1> may be connected, as by a spring plunger, to turn together and the pulley D<2> may be fixed. The arrangement is such that on the pulleys G<1> rotating independently, the pulley D being locked, rotation of one pulley G<1> rotates the roller to roll or unroll the blind. When the pulleys G<1> are connected to rotate as one, the pulley D<2> being freed, rotation of the pulley D<2> raises or lowers the roller, the endless cord F acting as a single cord. When a spring roller is used one of the end bearings is elongated to resist the twisting effect of the roller. In a modified arrangement two rollers are adjusted simultaneously. Reference has been directed by the Comptroller to Specification 144,313.
Patent GB-802856-A (GB)
Title: High capacity choke for d.c. installations
IPC: H01F30/08
Filed: 1957-02-15
Abstract: 802,856. Inductors. MASCHINENFABRIK OERLIKON. Feb. 15, 1957 [March 6, 1956], No. 5286/57. Class 38 (2). A choke of high current-carrying capacity for D.C. installations comprises a coil of axially adjacent turns 13, separated by insulation rings 7, of an edgewise wound strip 1 which has holes 4 through which tie bolts 6 pass to hold the winding together. The internal diameter of the coil may be 5-20 times the width of the strip. The strip may be aluminium or aluminium alloy, 10 cms. wide and 10-20 mm. thick.
Patent GB-193858-A (GB)
Title: Improvements in automatic weighing machines
IPC: G01G13/00
Filed: 1922-05-06
Abstract: 193,858. Jagenberg-Werke Akt.-Ges. May 11, 1921, [Convention date]. Automatic - feed weighers. - fn an automatic weighing- machine a device for controlling the intermittent supply of material from the feed hopper to the weigh pan comprises a pivoted feed gate for arresting and releasing the material a trip dog mounted on the weigh beam to engage directly in the upstroke of said beam with a trip lever actuating an arm of, and thereby opening, the feed gate; a hook-shaped catch lever engaging and maintaining the feed gate in the open position and a trip dog adjustably mounted on the weigh beam to engage directly on the down stroke of the beam, with a catch lever thereby allowing the feed gate to close by gravity. The feed gate 23 is retained in the open position by a catch or lever 24. On the descent of the weigh beam 1, an adjustable pin 26 thereon releases the catch 24 and the feed gate falls and arrests the flow of material down the shoot 21. On the return of the weigh-beam a hook 27 thereon actuates a lever 25 and re-starts the feed by pressing back an arm 28 secured to the feed gate.
Patent GB-1376361-A (GB)
Title: Transformer tap changer
IPC: H01F29/04
Filed: 1972-02-04
Abstract: 1376361 Transformer tap-changing ALLMANNIA SVENSKA ELEKTRISKA AB 4 Feb 1972 [5 Feb 1971] 5299/72 Heading HIT In a transformer tap-changing system wherein taps 8 and 9 are moved during periods when they are not carrying current, which periods arise from the control of pairs of oppositely poled thyristors 1, 2, 3, 4, the commutation between thyristors to allow tap changing is effected by so-called "natural commution" for inductive loads and for changing upwards with a resistive load but is by so-called "switching when the load current is zero" for changing downwards with a resistive load this operation being effected by an auxiliary thyristor 5 and resistor 13 (Fig. 2). For natural commutation, one may consider changing upwards with the load 7 in Fig. 1, resistive. If thyristor 3 is conducting and thyristor 1 is fired, current transfer from 3 to 1, and the higher voltage at 8 is applied to the cathode of 3 to shut this off contact 9 is now current-free and may be moved upwards. For switching when the load current is zero which is necessary when one is changing downwards and the load is resistive, then Fig. 2, may be considered. Thyristors is conducting and it is anticipated that thyristor 4 will take over during the next half cycle thyristor 1 is conducting thyristor 5 is triggered on and a circuit is completed via 8, 1, 5, 13 and 9. The current through thyristor 1 falls to zero and as the negative half-cycle commences the load current i is carried by the thyristor 5. The resistor 13 increases the reverse voltage applied across the thyristor 1 which is being turned off. After a short delay thyristor 4 is triggered on to shortcircuit thyristor 5 and carry the load current for the remainder of the half-cycle. The disclosure sets out in detail (Figs. 3 and 4, not shown), a control arrangement with sensing means provided for indicating the states, e.g. conducting, with reverse blocking voltage, under "off state voltage" (i.e. forwardly biased but not conducting), of the various thyristors. This control arrangement is such that commutation between thyristors takes place under "natural commutation" when tap-changing is proceeding upwards, or when it is proceeding downwards and the load is not a resistive load. However it determines that top-chainging is proceeding downwards and the load is resistive than commutation is of the switching when the load current is zero type, and utilizes a pair of auxiliary thyristors such as the thyristor 5.
Patent GB-563443-A (GB)
Title: Improvements in and relating to portable mirrors
IPC: A45D42/04
Filed: 1943-04-02
Abstract: 563,443. Portable mirrors. BAUMANN, H. April 2, 1943, No. 5333: [Class 52 (iii)] A strap 5 is attached to the lower edge of a portable mirror 1 in a case 3, 4, and passes out through a guide slot 6 in the tip of the side 4 so that pulling out the strap raises the mirror to standing position. When folded up the strap passes over the tips of 3 and 4 and into a loop 7 on 3 to hold the case closed.
Patent GB-987454-A (GB)
Title: Improvements in a device adapted to be incorporated in a fluid pressure braking system of a double axle vehicle for regulating the pressure in proportion to the load on the vehicle
IPC: B60T8/18
Filed: 1962-02-13
Abstract: 987,454. Fluid-pressure brakes. WESTINGHOUSE BREMSEN-G.m.b.H. Feb. 13, 1962 [Feb. 27, 1961], No. 5444/62. Heading F2F. [Also in Division B7] In a fluid-pressure braking system for a double axle vehicle, such as a railway carriage having rockable bogies, the brake pressure in the system is controlled in accordance with vehicle load but independently of rocking movements of the double axle by the provision of telescopic tubes 5, 6 interconnecting the axles 3, 4, the tubes being connected at the pivotal point A of the rocking movement of the bogie to a linkage actuating a brake pressure regulator 15. The linkage consists of a link 13 connected by a spring 12 to an upstanding member 11 secured to the tubes. Ball-and-socket joints 9, 10 connect the ends of the tubes with the axles. The linkage may also act on a valve for controlling pressure in air springs of the vehicle.
Patent GB-737382-A (GB)
Title: Improvements relating to vehicle power transmission mechanism
Inventor: HAYDON DAVID PERCY
IPC: F16H37/00
Filed: 1952-03-03
Abstract: 737,382. Driving auxiliary parts. PRESTAGE, Ltd. Feb. 23, 1953 [March 3, 1952], No. 5462/52. Class 79(2). A two part casing 121, 122 for power take-off gearing is arranged between and connected by bolts to the vehicle clutch housing 13 and change speed gear box 14 and the casing houses a shaft 10 which interconnects the clutch and change speed gear and carries a pinion 16 meshing with an idler gear 17 connectable with a power take-off shaft 20 by a lever 27 through a shaft 26 and a member 22 slidable on guide rods 23. In the embodiment shown in Fig. 3 the idler gear 17 meshes with a gear 19 clutchable to the shaft 20 by a dog clutch member 211 engaged by the member 22, the gears 16, 17, 19 being helically toothed. In a modification, Fig. 6 (not shown), the gearing is spur toothed, the gear 19 being splined onto the power take-off shaft for slidable engagement with and disengagement from the gear 17. The power take-off shaft may be coupled. at 29 to fire fighting equipment, a dynamo or air compressor. In a modification, power take-off shafts may be arranged on both sides of the change speed gear box.
Patent GB-917785-A (GB)
Title: Improvements in or relating to an ink fountain
Inventor: DENT BOYCE CHILDRESS
IPC: B41F31/04
Filed: 1961-02-14
Abstract: 917,785. Inking-apparatus. KOPPERS CO. Inc. Feb. 14, 1961, No. 5462/61. Class 100 (2). An ink fountain for a printing-press having a rotatable fountain roller comprises an ink reservoir with a blade support, a flexible blade mounted on the support parallel to the roller with an edge in close proximity to the roller, inflatable means operative when inflated to urge the blade towards the roller so that the blade edge is in lengthwise contact with the roller, and means operative when the inflatable means is inflated to space the blade edge from the roller at desired spans along the length thereof. The blade 33, Fig. 2, is carried on a support 23, and underlying it are a plurality of axially spaced pivot blocks 37 rotatable on a shaft 39, each block having a node 41 engaging the underside of the blade. A hose 43 when inflated presses the blocks counterclockwise and the blade against the roller 11. Each block 37 is engaged by a rod 47. Rotation of a thumbscrew 49 causes the rod to pivot the block clockwise against the force of the hose to space the blade edge from the roller at the desired part. For cleaning the fountain, a hand-wheel 57 is rotated, rotating a shaft 63 on the base member 17, a pinion on the shaft 63 meshing with a rack on the support 23, to move the latter towards the roller 1. The blade is thereby forced by the roller against the nodes 41, rotating the blocks 37 against the pressure of the hose to release the pressure of the rods 47, so that the blade engages the roller with uniform pressure. The roller 11 is rotated counterclockwise to clean all the inking rollers, the reservoir 13 is drained, the hose pressure released, and the support 23 retracted, the ink on the blade edge and roller being wiped off. The hose is then inflated and the blade returned to operating position. The roller 11 is mounted on ink-sealing end plates 29 carried on the base member 17, and the fountain assembly is adjustable horizontally by rotating a bolt 79 carrying a stud 73 threaded into the member 17, the bolt 79 being threaded into a fixed frame member 19, openings 81 in the member 17 allowing some relative movement when bolts 83 are loosened. In another form, Fig. 6, the inflatable hose 133 acts directly against the blade 129. Rods 157 rotate blocks 145 clockwise, the blocks engaging pins 143 on rods 141 welded to the blade to space the blade from the roller 11 where desired. The hand-wheel 163 rotates a shaft 169 carrying a pinion meshing with a rack fixed to the support 121 to move the latter relative to the base member 111.
Patent GB-552359-A (GB)
Title: Selective multiple feed device for rolling mill
IPC: B21B39/18
Filed: 1942-04-23
Abstract: 552,359. Rolling. TRIGGS, W. W. (Pittsburgh Steel Co.). April 23, 1942, No. 5477. [Class 83 (iv)] Rolling mills, particularly those for rolling wire from bars, have means for feeding a bar &c. from a single discharge station of a furnace to any one of three or more roll entry positions irrespective of the presence of other bars extending from the furnace to any or all of the remaining positions. Bars 14 are fed into a furnace 12 and fed laterally by shifters 15 to the discharging plunger 17 which ejects them through the door 18 over a feed table 26 and through fixed guides 23, 24, 25 to the entry pass of a roll train 20. The feed teeth has fixed inclined guides 27, 28, 29 and movable guides or baffles A, B, C, D, E that may either be flush with the bath or stand above it at least one baffle in front of each entry guiding towards the other passes. The baffles are pivoted to levers 31 having counterweights 34 and connected by chains 35 to the rams of hydraulic cylinders carried by a bracket above the front of the furnace. When a bar is to be fed to pass x baffles A and C are raised lifting the ends of bars that may be entering passes Y and Z so that the new bar to be fed may pass underneath. To feed a bar into pass Y, A, B and D are raised and to pass Z, B and E are raised.
Patent GB-776157-A (GB)
Title: Solvents and softeners for polyesters of terephthalic acid with aliphatic dihydroxy-compounds
IPC: C08K5/00
Filed: 1954-02-24
Abstract: A solvent or softener for a polyester derived from terephthalic acid and an aliphatic dihydroxy compound is an acid of formula R-COOH or R-X-COOH, wherein R is an aromatic radical or nitrogen-containing benzenoid heterocyclic radical and X is -CH2-or -OCH2- or an anhydride, monohydric alcohol or phenol ester, amide or nitrile of such an acid.  The solvent or softener may contain more than one carboxylic group or derivative thereof and may contain further substituents, e.g. hydroxy groups, alkyl or alkoxy groups, nitro groups, halogen atoms, keto groups or aldehyde groups.  Moreover they may be diluted with naphthalene, diphenyl, tetrahydronaphthalene, decahydronaphthalene, xylene, 1-methyl naphthalene, 2-methyl naphthalene or mesitylene.  Examples disclose polyethylene terephthalate dissolved in benzoic acid, benzoic anhydride, methyl benzoate, phenyl benzoate, methyl salicylate, methyl 3-hydroxybenzoate, methyl 2-nitrobenzoate, phenylacetic acid methyl phenylacetate, phenoxyacetic acid, benzamide, benzonitrile, methyl nicotinate, methyl 3-hydroxybenzoate and methyl benzoate, benzoic acid and methyl benzoate, benzoic acid and benzaldehyde, methyl benzoate and o-dichlorobenzene and methyl benzoate and p-dichlorobenzene.
Patent GB-748344-A (GB)
Title: Improvements relating to engine-electric transmission systems for rail vehicles
Inventor: ABBINK-SPAINK JOHANN HERMANN
IPC: H02P5/68
Filed: 1953-02-27
Abstract: 748,344. Control of several D.C. motors. ENGLISH ELECTRIC CO., Ltd. Feb. 26, 1954 [Feb. 27; 1953], No. 5530/53. Class 38(3) A traction system comprises a main generator G driven by a diesel engine DE and having its field winding GF excited by means of an auxiliary machine AE which is also driven by the diesel engine. Traction motors Ml, M2, M3, are supplied in parallel from the main generator 'through a field winding EF of an exciter E for the reversible field windings M1f1, M2fl, M3f1, of the traction motors, the machine E being driven by the engine DE. Amplifying exciters BE1 and BE2 supply additional motor field windings M1f2 and M2f2, M3f2, respectively, and have control windings BE1f, BE2f, connected between normally equipotential points in the motor circuits. When the generator load current or the engine speed rises, increased field excitation of the traction motor is obtained, so that the torque characteristic of the motors follows closely that of a series-wound motor under transient conditions. Under steady running conditions, wheel-slip is reduced by the exciters BE1, BE2, which operate to balance the currents taken by the motors, since any potental difference across the field windings BE1f, BE2f, causes the excitation of the appropriate traction motor to be varied in a corrective sense. A generator field regulator GFR may be controlled to match the output of generator G with the available horse-power of the engine, and may be coupled with the motor field regulator MFR to reduce automatically the motor field excitation after all the generator field resistance has been removed. In a modification, the exciter E has a shunt field winding EFC of sufficient resistance to prevent selfexcitation, and the regulator MFR is connected in series with this winding. For dynamic braking, the winding EFC is connected across the auxiliary exciter AE, and a braking resistance BR is connected across the traction motor armatures. A shunt resistor SR is connected in parallel with the exciter field winding EF which, under these conditions, opposes the winding EFC. Specification 579,570 [Group XXXV] is referred to.
Patent GB-1173461-A (GB)
Title: Improvements in or relating to Apparatus for Tapping Holes in Work Pieces
Inventor: ASHTON WILLIAM ADAM
IPC: B23G1/20
Filed: 1967-02-06
Abstract: 1,173,461. Tapping. R. A. LISTER & CO. Ltd. 6 Feb., 1967, No. 5546/67. Heading B3N. [Also in Division F2] A tapping device comprises one or more tapping spindles 11, each of which is telescoped into a drive shaft 17, rotated by a pinion 19 driven by a reversible electric motor. The spindles are mounted in a body 25, which is moved towards and away from the work to be tapped by a lead screw driven by a second reversible electric motor. A number of microswitches 56-59, Fig. 7, are provided, which are successively actuated by dogs 61 mounted on a push-rod 62, so as to control the motors, the push-rod being connected to a second lead screw by a rocker arm 65 for moving the rod 62 axially. Shaft 17 is externally screw-threaded at 20 and engages a nut 21 having a thread pitch equal to that of the tap and is connected to body 25 by shear pins. The inner end of spindle 11 has a hard metal pad 26 with a ball 27 disposed therein, the ball co-operating with a spring-urged metal peg 28 located in shaft 17. Spindle 11 has longitudinal grooves 40 which support rollers 41 surrounded by a spring 43, and the rollers project into internal slots (42) in shaft 17. One end of the rollers is loosely encircled by a sleeve 44 screwed to shaft 17, and the other end is engaged by a sleeve 4, which abuts an internally screw-threaded split ring 47, screwed to shaft 17, and held together by a rupturable wire 49, to provide an overload release. In operation, when a predetermined torque is reached, rollers 41 move out of slot 40 and into adjacent grooves to provide slip. This slip continues until the cause is removed or the reversing motor is actuated. When the hole is tapped the motor reverses the drive and shaft 17 moves to the right, Fig. 1. However should the tap stick, the end of split ring 17 engages the end of slots 40, wire 49 snaps, and shaft 17 moves relative to spindle 11. Should the axial load be too great, shearing of the pins of nut 21 will occur.
Patent GB-638510-A (GB)
Title: Improvements in or relating to substituted omega-aminoacetophenones and method of preparing the same
Filed: 1947-02-26
Abstract: Meta - hydroxy - omega - methylaminoacetophenone is prepared by continuously and separately introducing meta-benzoyloxy-omega-bromoacetophenone and methyl amine into a reaction zone containing an alkanol having from 1 to 4 carbon atoms, e.g. isopropanol, at a temperature below 65 DEG  C. and removing the keto amine from the said reaction zone in a portion of the reaction medium and neutralizing the keto amine containing the product substantially as rapidly as it is formed.  Preferably an excess of the amine is employed and a reaction temperature of 45-65 DEG  C. is maintained.  In an example, m-benzoyloxy-o -bromoacetophenone in isopropanol and aqueous methylamine are gradually added to a reaction vessel and the reacted product is continuously run off into an excess of hydrochloric acid from which m-hydroxy-o -methylaminoacetophenone hydrochloride is isolated.