baber/WOPTO huggingface dataset:
Patent GB-843334-A (GB)
Title: Improved clothes drier and method of drying clothes
IPC: D06F58/24
Filed: 1958-10-07
Abstract: 843,334. Tumbler driers for clothes. GENERAL MOTORS CORPORATION. Oct. 7, 1958 [Oct. 11, 1957; March 27, 1958], No. 31947/58. Class 34(2) The operation of a tumbler drier is automatically accomplished by a timer motor actuated electrical control circuit in three stages (1) in. which air heated by electric elements 22. Fig. 1, is circulated in a closed circuit by a fan 20 driven by the drum motor 18 through the drum, a lint collecter 34 and an adsorbent unit 10 until 'the moisture content of the clothes is reduced to a predetermined level (2) in which the heater 22 is de-energized whilst a heater 24 is switched on, a damper 91 is almost closed and the fan motor is reversed to drastically reduce the air flow velocity whilst raising its temperature sufficiently to burn any lint trapped by the collecter 34 and (3) in which the timer motor is switched off, the damper 91 is opened, and a damper 28 is closed so that the. fan, still reversed, drives air heated by the heater 24 through the unit 10 to regenerate the adsorbent, the moisture-laden air thus produced being discharged to atmosphere through a conduit 26, the necessary make-up air to the fan being admitted to the circuit through seals 74, 84, placed between the rotating ends of the drum 14 and its stationary casing 36, Fig. 3. The drier is finally shut down by a switch sensitive to a thermostat placed in the conduit 26. The drum is stationary during the lint burning and regeneration stages as reversal of the motor 18 causes operation of a slip-clutch 16 located between the motor and the drum. During the clothes drying operation the fan 20 circulates heated air from a chamber 66, Fig. 3, to pass in succession through an annular chamber 72, drum perforations 76, the drum, perforations .78, an annular chamber 80, a chamber 90, a lint collector unit 92, a duct 99, the fan 20, a duct 56, an adsorbent unit 10, Fig. 5, comprising concentric perforated cylinders 102, 104, housing silica gel 106, and a duct 62 leading to the chamber 66 which houses the heater 22. During lint burning the damper 91 is almost closed whilst the air is heated by the heater 24 which is disposed in the adsorbent housing. Whilst the silica gel is undergoing regeneration the damper 28, Fig. 5, closes the opening 96 in the chamber 66 so that the moistureladen air streaming from the adsorbent is directed to atmosphere through the conduit 26. In a further embodiment the unit 10, Fig. 6, comprises a casing housing an aluminium filter 306 through which the air is blown. The casing has a sump 292 filled with glycerine or ethylene glycol and a motor-driven pump 296 which forces the liquid through a pipe 316 to a distributer 312 within the aluminium from whence it is allowed to trickle down through the filter to the sump. Regeneration is effected by energization of a heater 300 in the sump. In this drier access may be had to the lint collecter unit.
Patent GB-485658-A (GB)
Title: Improvements in or relating to power hammers
IPC: E02D7/08
Filed: 1936-11-23
Abstract: 485,658. Pile drivers; quarrying,. WALKER, R. H. Nov. 23, 1936, No. 31956. [Classes 68 (i) and 68 (ii)] [Also in Groups XXII and X] A mechanical hammer which may be used in quarrying, demolition, excavation, ramming or other similar work, is mounted on a lorry or tractor with the aid of framework 17, 18, the hammer head 6 sliding in a slotted sleeve 12 and being raised by a tongs 7, connected by a rope 8 to a winding drum 10. Lugs 15 on the head 6 slide in a slot in the sleeve. The tongs slide over a conical end of the hammer to engage a neck part 11, and are released at the top of the stroke by striking the end part of the slot, which is reinforced at 13. To make the sleeve adjustable, T-shaped members 22, slidable in guides in the framework, are attached to the sleeve, which is supported in its adjusted position by a rope 19 attached to a drum 20. The sleeve is raised by winding the rope 8, the engagement of the tongs 7 with the end of the slot moving the sleeve, after which the ropes 19 are wound in and the drum 20 locked.
Patent GB-1217564-A (GB)
Title: Improvements in or relating to the control of synchronous dynamo-electric machines
Inventor: HUTCHINS ROY
IPC: H02P25/02
Filed: 1968-07-04
Abstract: 1,217,564. Control of A.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 14 July, 1969 [4 July, 1968], No. 32050/68. Heading H2J. The field winding F on the rotor of a brushless synchronous machine is adapted to be supplied from an exciter through bridge B and thyristor SCR2. During the starting operation prior to the firing of thyristor SCR2, the slip-frequency current developed in the field winding is limited by resistor R associated with diode D1 and thyristor SCR1 which conducts when zener diode Z breaks down. The thyristor SCR2 is fired when point 1 is positive with respect to point 3, and if the preceding negative half-cycle of the slip-frequency voltage has endured for a period not less than a predetermined value so that the machine is operating at a proper speed for application of excitation to the field winding. For this purpose, the trigger circuit for the thyristor SCR2 is associated with a timer. The triggering and timing circuits are supplied from points 3, 4, having a stabilizing Zener diode VR1 in parallel with reservoir capacitor C1. Point 4 is connected to points 1 and 2 through respective diodes D2, D3, and current limiting resistors R2, R3. The timer comprises a variable resistor R1 in series with capacitor C2 which is discharged by transistor T1 when a positive signal is received from point 1. A capacitor C3 provides time-delay to ensure that the thyristor SCR1 has turned off and that the current through the thyristor SCR2 is established before the timer is reset by discharge of the capacitor C2. A transistor T2 is rendered conductive by a positive signal from point 1 so that transistor T3 will produce a trigger signal if it receives an enabling signal from the capacitor C2. Such an enabling signal is produced after a predetermined period of charging of the capacitor corresponding to the duration of a half-cycle of the slip-frequency voltage at the correct speed for synchronization. An amplifier T4, T5, T6, responds to a trigger signal from transistor T3 to fire the thyristor SCR2, the field current continuing in the same direction, and the potential between points 1, 3, being reversed to disable the discharge circuit. The control circuit is de-energized by short-circuiting points 2, 3, until the machine pulls out of synchronism and thyristor SCR2 is turned-off. In another arrangement, a transistor switchesoff the supply to the timing resistor R1 if the auxiliary supply voltage is too low for proper operation, Fig. 4 (not shown). The resistor R2 and diode D2 may be omitted, a resistor being interposed between point 1 and the junction of resistors R5, R6, to limit the current through a Zener diode between this junction and the point 3. With this arrangement, the diodes D4, D6, for protecting the transistors T1, T2, may be omitted.
Patent GB-392608-A (GB)
Title: Improved electrical sign
IPC: G09F13/06
Filed: 1931-11-19
Abstract: 392,608. Luminous signs. ROBERTS, H., 42, John Street, Woollahra, near Sydney, Australia. Nov. 19, 1931, No. 32066. Convention date, Jan. 7. [Class 3 (ii).] A sign comprises a front stencil 6 having slots 7 with rounded ends forming the edges of the characters to be displayed, a casting 9 containing lamps 15, and light colouring and diffusing means disposed behind the stencil, the whole being designed to simulate a neon sign. As shown in Fig. 3, the plate 6 is backed by a transparent coloured sheet 10, a diffusing sheet 11 which may also be coloured if desired, and an opaque plate 12 having a cut-out portion over the area of the sign, the sheets preferably being slightly spaced. The inner faces 14 of the casing constitute irregular reflecting surfaces. The sign may be doublesided, in which case prismatic reflectors are disposed between the lamps.
Patent GB-421083-A (GB)
Title: Improved front clasp for corsets and the like articles of apparel
IPC: A41F1/04
Filed: 1933-11-17
Abstract: 421,083. Strip fastenings. SPIRELLA CO. OF GREAT BRITAIN, Ltd., Letchworth, and SIMMONDS, F. E. DE LA S., 201, Icknield Way, Letchworth, Hertfordshire. Nov. 17, 1933, No. 32148. [Class 44] [See also Group VII] A clasp fastening for corsets comprising a pair of busks carrying, respectively, headed pins and plates with keyhole slots, is characterized by the provision of one or more projecting tags 8<1> attached to the front face of one busk 1 and cranked so as to pass between the busks when the clasp is fastened and to lie against the rear face of the other busk 2 or against its covering. Each tag 8<1> is passed through a slot in the covering material (not shown) of the busk 1, the material being tucked behind the cranked part 10 of the tag, which serves also to keep the busks apart. Additional tags 16 may be secured near or on top of the tags 81 to lie on top of the opposite busk 2 so as to form a slot into which the said busk can be fitted. The slotted plates 3 may be of the type described in Specification 363,069, being slightly bent so that the two busks lie in the same plane when interengaged, and a flap may be provided to cover the fastening.
Patent GB-637300-A (GB)
Title: Improvements in or relating to weighing apparatus
IPC: G01G1/18
Filed: 1946-10-30
Abstract: 637,300. Weighing-apparatus. BERKEL AUTO SCALE CO., Ltd. (Maatschappij van Berkel's Patent N.V.). Oct. 30, 1946, No. 32196. [Class 143] An indicating counter-scale having a weigh-beam B supporting a goods platter E has an arm U secured to the beam and terminating in an arcuate head concentric with the beam's pivotal axis C, crossed ribbons conecting the arm head with a disc R on the indicator spindle P. One ribbon is shown secured at T to one end of the head, and the other by a spring V to the opposite end of the head. The load resistant is a pendulum weight W integral with the weigh-beam, but springs may be used as an alternative. Check links J and M guide extensions I and L of the goods platter E and weights platter F respectively.
Patent GB-819947-A (GB)
Title: Improvements in and relating to vehicle brakes
IPC: F16D65/833
Filed: 1957-10-16
Abstract: 819,947. Cooling brakes. SANFORD, R. S., EATON, W. A., EAMES, J. O., CASLER, R. H., and SEDERGREN, E. D. Oct. 16, 1957 [Dec. 27, 1956], No. 32317/57. Class 103 (1). A liquid-cooled brake shoe comprises an arcuate flange member 18 and an arcuate metallic friction plate 20 of relatively high thermal conductivity provided with a plurality of longitudinally extending ribs 22 for supporting the plate radially separated from the arcuate flange member 18 to form jacket spaces 23 for the circulation of cooling liquid therethrough. At least the marginal ribs are secured to the arcuate flange member 18 as by brazing. The brake shoe is formed with inlet and outlet plenum chamber members 28 as shown in Figs. 2 and 4 and brake shoes may be arranged in a brake as shown in Fig. 2 wherein the friction 16 is secured to the inside surface of the brake drum 15. Fig. 6 shows an alternative embodiment to that illustrated in Fig. 4, the arcuate flange member 24 of the brake shoe 171 carrying spaced longitudinally disposed ribs 25, the friction plate 26, comprising a plain arcuate member, forming the working face. The friction plate in both cases may be of copper, copper alloy or silver having a relatively high thermal conductivity preferably at least 40 per cent of that of pure electrolytic copper and must have a melting point of at least 1500‹ F. Reference has been directed by the Comptroller to Specification 775,052.
Patent GB-728314-A (GB)
Title: Mineral sorting screens
Inventor: BARKER WILLIAM NORMAN
IPC: B07B1/46
Filed: 1952-12-22
Abstract: A horizontal or inclined vibratory screen for use in sorting, e.g. coal, is suspended from an overhead structure by four cables or rods, two helical springs being provided at each support point, one above and one below the structure, the two springs having different initial deflections, i.e. different resonant frequencies, in order to avoid excessive vibration during starting and stopping.
Patent GB-304876-A (GB)
Title: Improvements in opening machinery for textile fibres
IPC: D01G9/00
Filed: 1927-12-02
Abstract: 304,876. Jolly, J. Dec. 2, 1927. Openers and cleaners; feeding openers and cleaners.-In a machine for opening hard cotton waste in which the drum C is provided with several sets of feed rollers B, B<1>, B<2> by which the partly treated material is returned to the drum for further treatment, each set being of successively smaller diameter and being placed closer to the drum, the material is deflected by a guide plate H, H<1> to a perforated rotating suction drum J, J<1> which delivers the material directly to the succeeding pair of feed rollers. A feed roller and feed plate may be used in place of the last pair of feed rollers.
Patent GB-1080751-A (GB)
Title: A fastener to be used for example in lieu of a stud or screw for holding parts together
IPC: F16B13/12
Filed: 1964-08-10
Abstract: 1,080,751. Jigs. G. O. CONNER. Aug. 10, 1964], No. 32495/64. Heading B3C. [Also in Division F2] A drill bush 11 is secured in a drill jig 10 by an expander-fastener (see Division F2].
Patent GB-1387759-A (GB)
Title: Manufacture of polyesters
IPC: C08G63/80
Filed: 1972-07-21
Abstract: 1387759 Solid phase preparation of polyesters IMPERIAL CHEMICAL INDUSTRIES Ltd 10 July 1973 [21 July 1972 14 Nov 1972] 32501/73 and 32502/73 Divided out of 1387335 Heading C3R A process for preparing a polyester comprises reacting an aromatic dicarboxylic acid in the solid state with a diol or a diol monoacylate, the reaction conditions being controlled so that throughout the reaction a major part of the reaction mass forms a solid phase. The reaction may be carried out under fluidized bed conditions with the diacid in particulate form and the diol or diol monoacylate in the vapour state, preferably in a chemically inert carrier gas, e.g. nitrogen. The examples describe reacting terephthalic acid with ethylene glycol. The following are also described; (a) reaction of ethylene glycol with naphthalene - 2,6 and 2,7 - dicarboxylic acid, 1,2-diphenoxy-ethane and butanep,p<SP>1</SP> - dicarboxylic acid, biphenyl - 4,41- dicarbocylic acid, diphenyl sulphone-4,41-dicarboxylic acid, bibenzyl-4,41-dicarboxylic acid, stilbene - 4,4<SP>1</SP> - dicarboxylic acid, 1,2 - di - pcarboxy - benzoyloxyethane and 1,6 - di - pcarboxybenzamidohexane, (b) reaction of 1,3- propanediol with biphenyl-4,4<SP>1</SP>-dicarboxylic acid and diphenyl sulphone-4,4<SP>1</SP>-dicarboxylic acid and (c) reaction of 2-hydroxyethyl acetate with terephthalic acid.
Patent GB-1478967-A (GB)
Title: Safety belts
IPC: B60R21/18
Filed: 1973-07-09
Abstract: 1478967 Safety belt J W FOX 9 July 1974 [9 July 1973] 32608/73 Heading A3V A safety belt is in the form of an evacuated tube held flat by the vacuum inside it against resilient means tending to open it out. In an emergency air is let into the tube so that it opens out to provide a greater area of support and, if a one way valve is incorporated in it, a cushioning effect due to controlled release of the air trapped in it. The resilient means may be in the form of hoops or a helical spring or like folded means 36 inside the tube 37. The air valve may be incorporated in the anchoring means of the belt (Fig. 1 not shown) and triggered by an impact or inertia sensitive device.
Patent GB-793652-A (GB)
Title: Improvements in or relating to electrical inductance devices
Inventor: RICHARDSON ALAN GEORGE
IPC: H01F27/02
Filed: 1955-11-15
Abstract: 793,652. Inductors and transformers. MARCONI INSTRUMENTS, Ltd. July 26, 1956 [Nov. 15, 1955], No. 32631/55. Class 38 (2). In inductive apparatus an envelope surrounding a coil 1 is formed by the outer edges of a core and two insulating cover members 3, 4 preferably of bonded glass resin, and the envelope is filled through an aperture 8 with a thermosetting plastic which may be a solventless varnish. Leads 9 are brought out through apertures and soldered to tags. Details of the heating process for polymerization of the varnish to a rubber-like consistency are described.
Patent GB-192858-A (GB)
Title: Process of and apparatus for the treatment with fluids and centrifuging of textile fibres and materials
IPC: D06B5/00
Filed: 1921-12-06
Abstract: 192,858. Larivei, F. F. Dec. 6, 1921. Treating textiles.- Textile materials are treated with liquor for dyeing, bleaching, or washing &c. by filling a centrifugal machine with liquor and setting up circulating currents by means independent of the centrifugal force of the apparatus; the goods may also be treated by circulating currents of liquor containing air or by air only. The basket 2 on the spindle 3 is rotated inside the casing 1 by means of a driving pulley 6 for high speed or by bevel-gearing 7, 8 for low speed. The bevel-gearing cas be disengaged when the high speed drive is used. The basket is shown divided into outer and inner compartments 12, 12a each with an inner annular space 14, 14a. The inner walls 22, 22<a> of the annular spaces are imperforate and the outer walls 23, 23a are perfcrated. Spurt pipes 13, 13<a> project into these annular spaces and are connected to the conduit 17 supplied from the pump 18. The casing 1 with its cover 24 forms an air-tight enclosure when the hinged working opening is closed. The material is packed in the compartments 12, 12<a> and the prepared liquor is drawn from its tank into the container 1 through valves 19b, 19<a> and pump 18. The valve 19<b> is then closed, valve 19 is opened, the pump 18 is started and the centrifugal machine is run at its low speed. A circulating flow of liquid is maintained by the pump 18 from the spurt pipes 13, 13<a> through the material in the chambers 12, 12<a>. Air may be injected into the liquid if desired. The material is freed from surplus moisture by centrifugal force and may be further dried by currents of air at high pressure through the spurt pipes.
Patent GB-1002767-A (GB)
Title: Method for the manufacture of polyacrylonitrile
IPC: D01F6/18
Filed: 1961-09-12
Abstract: 1,002,767. Polyacrylonitrile fibres. TOHO RAYON KABUSHIKI KAISHA. Sep. 12, 1961 [Sep. 24, 1960], No. 32637/61. Heading B5B. Polyacrylonitrile fibres are obtained by spinning a solution of the polymer in aqueous zinc chloride solution of above 50% by weight zinc chloride into an aqueous coagulation bath containing from 10 to 20% by weight zinc chloride, rinsing the coagulated fibres in water at up to 80 C., stretching the fibres in water at above 95 C., and before the fibres cool or the water content of the fibres changes, relaxing them in contact with water at above 95 C. Rinsing may be effected under sufficient tension to stretch the fibres, and after rinsing, the fibres may be dried and then passed through a water bath to readjust their water content prior to stretching. The stretching and relaxation operations may be effected in the same bath, e.g. a boiling water bath. Alternatively stretching and relaxation may be effected in separate baths, the fibre passing over heated rollers to maintain its temperature during transference from one bath to the other.
Patent GB-1004086-A (GB)
Title: A tidal power machine
IPC: F03B13/26
Filed: 1961-09-12
Abstract: 1,004,086. Utilising tidal energy. R. M. STEPHENS. Sept. 12, 1961, No. 32643/61. Heading F1S. [Also in Division F4] A machine for utilising the energy of flow of a tide or a river comprises a series of buoyant vessels 5 rigidly secured at intervals to a braced structure 4 floating transversely of the flow and having propellers 6 at either end operated thereby to convert the energy into heat which is used in a prime-mover 17. The Specification describes various methods of mooring the structure to the shore by a "cantilever" construction as in Fig. 1, by a "fulcrum" constrfuction, by constructions moored to a river bank or on piles, or simply floating, as a ship. [Figs. 4 to 9 and 11 to 15 not shown.] Alternative devices (see Division F4) may be employed in which water pumped by energy from the propellers 6 is caused to generate heat frictionally to drive the turbo-generator at 17.
Patent GB-1047727-A (GB)
Title: Improvements in or relating to magnetic storage devices having movable heads
IPC: G11B5/52
Filed: 1964-08-11
Abstract: 1,047,727. Magnetic disc-record information stores. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 11, 1964 [Aug. 14, 1963], No. 32667/64. Heading G5R. A serial access magnetic store has, Figs. 2a, 2b, four banks of heads K1-K4 (Fig. 2a) scanning a stack of discs P, or a single bank of heads K1 (Fig. 2b) sequentially scanning partial tracks on four stacks of discs P1-P4, the heads and discs being simultaneously driven to produce successive partial trochoidal tracks and the heads being switched sequentially. In an alternative development, Fig. 5, two sets of heads K1,1 to K1,6 and K2,1 to K2,6 scan interleaved tracks, the head support also having heads (not shown) scanning a stationary record disc to provide head-switching information. The heads may be switched to record and read the tracks alternately and may be airspaced from the disc P1, Fig. 10, or foil discs P1, P2 may be urged by air-pressure towards rigidly mounted heads, Fig. 11. The choice of machine parameters and their relations to access time is discussed in some detail.
Patent GB-635961-A (GB)
Title: Improvements in or relating to the cutting of curved gear teeth
IPC: B23F9/10
Filed: 1939-12-22
Abstract: 635,961. Gear-cutting. FORSTER, A. Dec. 22, 1939, No. 32755. Convention date, Aug. 24. [Class 83 (iii)] Gears with curved teeth are cut with a continuous generating motion by a machine having at least two milling - heads having their axes laterally out of line in the direction of the axis of the blank and the speeds of the spindle vary according to a formula taking into account the feed of the heads tangentially of the blank. To facilitate obtaining the required speeds without the use of unduly large change wheels, the variation required is introduced by means of one or more differential gears variously located. In one form the cutter spindles 11, 21 have their axes displaced by an amount S and are mounted ori slides 13, 23 traversed by screws 14, 24 worm-driven at 67, 77 at equal speeds in opposite directions. The drive is obtained from a shaft 66 bevel-geared to a change-gear train 81, 83 driven at 8 through bevels 43<SP>1</SP> from the shaft 43 driving the cutter 21. The cutter 11 is driven from a corresponding shaft 33 and the shafts 33, 43 are connected through gearing 37 giving any desired speed ratio, and a differential 49 controlled at 46 from the change-gear train 83. The blank table 2 is worm-driven through change-gears 8 and bevel-gears 6. The feeding speeds of the cutter slides may have different values and in this case a planetary gear 54 is introduced controlled by a, worm 56 driven from the train 83. In a modification (Fig. 2, not shown) employing three cutter spindles and slides, the differential gear is located in the drive to the feed screws. A greater number of cutter slides may be employed. In a further modification (Fig. 3, not shown) the differential gear is inserted between the shafts driving the cutter spindles. More than one planetary gear may be employed. The drive may be entirely mechanical or may be by electric, pneumatic or hydraulic means. Several sources of drive may be employed provided that these be synchronized.