baber/WOPTO huggingface dataset:
Patent GB-1362702-A (GB)
Title: Circuits for electronic commultation
IPC: H02M3/135
Filed: 1971-07-22
Abstract: 1362702 Semi-conductor switching circuits D F PARTRIDGE 22 July 1971 [30 July 1970] 34495/71 Heading H3T [Also in Division H2] A switching circuit comprises an inductor 24 in series with a switching device, such as a thyristor 21 or a thyratron, a free wheeling device such as diode 27, connected effectively across the inductor 24 and a turn-off circuit 28, 29 for reversing the polarity of the voltage across the thyristor 21. The arrangement is such that when thyristor 21 is triggered repetitively so as to switch pulses from source 26 into a load 22, the free wheeling current in inductor 24 is sufficiently greater than that of the load 22, not to inhibit the voltage from source 26 being applied to the thyristor 21. Assuming thyristor 21 to be conductive, and capacitor 29 to be charged negatively, thyristor 21 is turned off by triggering thyristor 28, the current in inductor 24 being maintained by free wheeling diode 27 and limited by resistor 25. Thyristor 28 becomes non-conductive when the current in diode 27 becomes equal to that in inductor 24. The voltage across capacitor 29 reverses during commutation and has to be further reversed under control of thyristor 30 and inductor 31. The invention minimizes trapped energy in the commutation circuit. In Figs. 2 and 3 (not shown) resistor 25 is omitted and diode 27 connected across a tapping on inductor 24 or to a winding coupled to inductor 24. In Figs. 4-6 (not shown) capacitor 29 is connected between the cathode of thyristor 28 and the source 26. In Fig. 5 (not shown) a further thyristor is connected between the anode of thyristor 30 and the source 26. In Fig. 6 (not shown) the recharging circuit 30, 31 includes an auxiliary source and further thyristor.
Patent GB-949870-A (GB)
Title: New or improved loading device for gear shaving machines
Inventor: GARNER PERCY
IPC: B23F23/04
Filed: 1961-09-28
Abstract: 949,870. Gear-finishing. DAVID BROWN INDUSTRIES Ltd. Sept. 28, 1961, No. 34803/61. Headings B3B and B3K. A loading device for a gear shaving machine comprises means 17 for imparting a slight, non- positive rotation to a gear 13 if it fails to mesh with the cutter 14. The gear is transferred from a shoot to a recess 15 in a slide 10 which is advanced by fluid-pressure towards the cutter. If meshing does not occur even with the gear riding up the slope 17, a rod 19 is moved to actuate a switch 24 causing the slide to be withdrawn and advanced again: a slight rotation of the cutter may also be imparted. A finished gear is ejected from the recess 15 when a further gear is loaded.
Patent GB-1281152-A (GB)
Title: Railway car automobile transporters
Inventor: JAEKLE WILLIAM MATTHEW
IPC: B61D47/00
Filed: 1970-07-17
Abstract: 1281152 Railway vehicles for transporting automobiles W M JAEKLE P V GARIN W E THOMFORD W M GREB and N N UDALOFF 17 July 1970 [14 Aug 1969] 34838/70 Heading B7L A railway vehicle for transporting automobiles comprises roof 16, floor 14, end walls 11, 13 and side walls formed of doors 24, each door being pivoted to the floor and adapted to have secured thereto three automobiles 40, the doors being provided with wells 36 to locate the automobile wheels and receivers 42 into which shoes fixed to the bottom of the automobiles are inserted to enable the automobiles to be supported by the doors clear of the floor 14 and roof 16 when the doors are closed. The hinges 28 are formed with cammed surfaces which enable the weight of the automobiles to be born by the floor 14 and not the hinge pins when the doors are closed. In a modification, Fig. 14, the automobiles are mounted on the doors with their longitudinal axes horizontal.
Patent GB-1017902-A (GB)
Title: Toothed gears silencing
IPC: F16H57/00
Filed: 1962-09-12
Abstract: 1,017,902. Toothed gearing. GENERAL MOTOR CORPORATION. Sept. 12, 1962 [Sept. 21, 1961], No. 34887/62. Heading F2Q. In a planetary gear train, the shapes of the tooth engagement surfaces of the sun gear and the planet pinions, and of the planet pinions and the ring gear are so formed that the acoustic impulses respectively due to contact between the sun-pinion and the pinion-ring teeth are substantially 180 degrees out of phase so that the resultant noise from the gear train is minimized. This may be achieved by relieving some tooth surfaces and crowning others so as to position accurately high spots of the tooth engagement surfaces, the high spots corresponding to the peaks of the acoustic impulses. A method of determining the high spots is described.
Patent GB-646460-A (GB)
Title: Improvements in automatic guns
IPC: F41A25/06
Filed: 1947-12-31
Abstract: 646,460. Automatic guns. AKTIEBOLAGET BOFORS. Dec. 31, 1947, No. 34980. Convention date, March 29, 1945. [Class 92 (i)] Rebound of the recoiling barrel 1 at the end of run out is prevented by resilient friction rings 18, 21 housed in the fixed casing 3 and recoiling barrel part 2 respectively, the striking surfaces on the rings being conical.
Patent GB-1267539-A (GB)
Title: Device for severing a travelling yarn thread
IPC: B65H54/71
Filed: 1969-07-11
Abstract: 1,267,539. Severing yarn. GLANZSTOFF A.G. 11 July, 1969 [11 July, 1968], No. 35022/69. Heading B4B. A device for severing a travelling yarn 1 or like elongated material comprising a cutter 17 connected to a piston-rod 18 of a piston 19 which is adapted to be actuated by compressed air under the control of a valve 31, the air being fed, in one position of the latter, to one side of the piston in order to load a spring 16 and in a second position of the valve, to act on the other side of the piston in order to drive the cutter on its operative stroke in addition to the power supplied by the loaded spring. The yarn 1 is fed from a processing machine over rollers 1, 3, 8, through a knot catching fork 9 and an aperture 14 in a cutter housing 15 to a pair of feed wheels 37 in a cutting machine 38. The piston-rod 18 is slidable in the housing 15 and prevented from rotating therein by means of a guide 20 cooperating with a rod 21, the guide also serving as an abutment for the spring 16. With the valve 31 in the position shown air is fed from a supply source 33, pipes 32, 30, vent valve 29 and pipe 28 into a chamber 27 in the cylinder 25 thereby loading the spring 16. In the event of a knot contacting the fork 9, the latter is deflected so as to actuate a switch 13 in an electrical circuit to a solenoid 34 connected to the valve thereby changing over the position of the valve. Air is then fed into a chamber 25 and the chamber 27 exhausted so that the cutter suddenly moves to cut the thread. Further switches 7 and 41 are included in order to actuate the cutter when excessive tension in the yarn raises a roller 3 or a build-up of shred occurs in the cutting machine 38.
Patent GB-502433-A (GB)
Title: Improvements in or relating to bobbin lifting mechanisms for stranding, twisting, lapping and the like machines
IPC: B65H67/06
Filed: 1937-12-18
Abstract: 502,433. Machines for making ropes &c. LARMUTH, J. H. Dec. 18, 1937, No. 35111. [Class 109] Relates to devices for lifting the bobbins of stranding, twisting, lapping, &c. machines. Each bobbin is rolled into place below the cradle where it is to be mounted, along a track 14 and on to a platform with side flanges 17 until checked by a stop pin 23. The flanged platform is mounted on a rod 10 carried by two arms 9, pivoted at 8 to brackets 7. Two telescopically adjustable links 19 are pivoted at 20 to the brackets 7 above the pivots 8 and also, to arms 18 fixed to the rod 10. The arms 9 are suspended from chains 12 which pass over sprockets 24, 25, 24, the ends hanging free, as shown. By turning the shaft 27 the platform and bobbin 15 can be drawn up or let down. The links 19 may be arranged to cause the platform to tip when raised, as shown in dotted lines, so that the flanges of the bobbin press against the stop pin 23. Two adjacent lifting devices may be coupled together so as to be operated from a common shaft 27. In a modification; the platform is lifted by means of four chains, cables, &c. passing over two sprockets which are geared together.
Patent GB-303441-A (GB)
Title: Improvements in gill bars and the like
IPC: D01H5/14
Filed: 1928-11-29
Abstract: 303,441. Gegauff, C. Jan. 3, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Gill bars or fallers. - The end portions of the bars or fallers, which receive the blows of the cams to raise or lower them on the slides are made more flexible and lighter by providing them with cut-away portions g, i, Fig. 3, or with holes g, Fig. 5, or by forming slots in them. The parts may be made thinner than the normal width of the bar and the guide surface h may be parallel to the plane containing the whole bar.
Patent GB-856209-A (GB)
Title: A method of, and apparatus for, controlling a number of consecutive operations
Inventor: BEK STEEN JACOB
IPC: F15B21/08
Filed: 1957-11-12
Abstract: 856,209. Regulating switches. SMIDTH & CO. A.S., F. L. Nov. 12, 1957, No. 35269/57. Class 38 (5). [Also in Groups XXIX and XXXV] In apparatus for controlling a number of consecutive operations in a repeated cycle, a cam-shaft 1 is rotatable stepwise by ratchet and pawl mechanism 5, 6 to a number of positions for actuating in sequence a series of impulse transmitters 4a . . . 4e, each of which is associated with a separate cam 2a . . . 2e on the shaft 1 and transmits a pneumatic or electrical signal to a device for starting each operation. Each increment of rotation of the shaft 1 is effected by leftward displacement of a piston 8 under the control of a pneumatic valve 12 which is actuated against a loading spring 29 by a signal transmitted thereto as each operation is completed. This signal may be pneumatic, as shown, consisting of pressure derived from a supply conduit 16 and passing through a valve 18b . . . 18g operated as each operation is completed and fed through a rotary valve 24 driven by the cam-shaft 1 to a chamber 26 bounded by a flexible diaphragm 28 for operating the valve 12, or it may be electrical, in which case the valves 18b . . . 18g are replaced by switches, the rotary valve 24 by a rotary switch arrangement, and the diaphragm 28 by a solenoid. The purpose of the rotary valve 24 or switch is to connect each valve 18b . . . 18g or switch with the means for operating the valve 12 as the corresponding operation is being performed. As shown, the arrangement is for apparatus in which the second operation is in two parts, necessitating the operation of both valves 18c, 18d before pressure is fed through a conduit 22c-22d. A manually-operable valve 18a is provided for initiating each cycle of operations. The Specification describes also a valve 24 of rotary disc-type. Specification 632,961 is referred to.
Patent GB-1272440-A (GB)
Title: Improvements relating to gas cushion vehicles
Inventor: KNUTH WILLIAM H
IPC: B60V1/16
Filed: 1969-07-14
Abstract: 1,272,440. Air cushion vehicles. AEROJETGENERAL CORP. 14 July, 1969, No. 35284/69. Heading B7K. A gas cushion vehicle has at least one ga<SP>s</SP> cushion cell the or each cell having a flexible retractable skirt 32, traction of the or each skirt 32 being caused by inflation of toroidal bladders 36, 38, 40, the or each skirt 32 being bonded at 34 to plate 24 which is fixedly attached to the recessed portion 22 of wall 20 of the vehicle. Inflation of the bladders 36, 38, 40 is controlled by solenoid actuated valves on each of the pipes 52, 56, 60 which are connected to a pressure fluid sources. The valves are controlled so that by selective retraction of the skirts 32, pitching and rolling of the vehicle may be affected to counteract accelleration and manoeuvring forces.
Patent GB-330219-A (GB)
Title: Improvements in the manufacture and production of nonknocking motor fuels
IPC: C10G47/00
Filed: 1928-11-30
Abstract: 330,219. I. G. Farbenindustrie Akt.- Ges. Nov. 30, 1928. Addition to 281,247, [Class 32, Distilling &c.]. Mineral and tar oils; motor spirit; paraffin and mineral waxes.-In the production of non-knocking motor fuels from bituminous coals as described in the parent Specification, the bitumen is removed in stages in which the conditions are successively more vigorous. The vigour of the treatment may be increased by raising the temperature or pressure, treating for a longer time or with larger volumes of solvent, or using different solvents. The extracted substances may be refined by distillation, be submitted to destructive-hydrogenation or to low temperature carbonization, or be extracted with aromatic solvents. For example, brown coal rich in bitumen is extracted with benzene at 200-250‹ C. and at atmospheric or 12 atmospheres pressure, then at 380-400‹ C. and 200 atmospheres with heavy oil containing substantially no ingredients boiling below 350‹ C. and obtained by destructively hydrogenating brown coal, and finally with benzene at 450‹ C. and pressures up to 1000 atmospheres. The residue, is destructively hydrogenated at 200-1000 atmospheres and 440-450‹ C. with hydrogen in presence of a catalyst made by drying at 120‹ C. an aqueous paste of molybdic acid and zinc oxide. Benzine, middle oils, and lubricating oils are recovered from the product by distillation. From the first extract of the coal montan or paraffin wax is obtained by distilling off the benzene and, if desired, treating with chromic acid. The second extract may be destructively hydrogenated in presence of condensing catalysts to produce lubricating oils.
Patent GB-522278-A (GB)
Title: Improvements in and relating to control systems for electric winders, haulages and the like
IPC: H02P1/16
Filed: 1938-12-05
Abstract: 522,278. Electric control systems. BRITISH THOMSON-HOUSTON CO., Ltd., and LIDDIARD, H. W. C. Dec. 5, 1938, No. 35395. [Class 40 (i)] [Also in Group XXXVII] A rheostat 11, 12, controlling a winder motor is operated by an auxiliary motor 24 operating through one of two electromagnetically-controlled clutches 27, 28, the clutch 28 being engaged when de-energized to move the rheostat towards its off portion, and the clutch 27 being engaged when energized to move the rheostat in the opposite direction. The clutches are under the control of co-operating contacts 7-9 carried by the member operating the rheostat, and a concentric member coupled to the driver's lever 1, so that unless the rheostat and the driver's lever are in corresponding positions both clutches are energized or de-energized to cause movement of the rheostat until positional agreement is reached, whereupon the clutch 28 is energized and the clutch 27 de-energized to uncouple the rheostat from the motor 24. On failure of the supply to the clutch coils, the rheostat is returned to its off position. A flywheel 23 ensures movement of the rheostat during a short interval following failure of the motor 24. To give freedom of control at slow speed the speed of the motor 24 may be increased by contacts on the hand lever or rheostat, or by a relay responsive to the voltage applied to the main motor or the speed. Alternatively an auxiliary field on the supply generator for the main motor may be made effective at low speed positions of the control lever. The speed of the motor 24 may also be adjusted in accordance with the position of the cage driven by the main motor.
Patent GB-432624-A (GB)
Title: Improvements in direction indicators for motor vehicles
IPC: B60Q1/34
Filed: 1934-12-10
Abstract: 432,624. Road - traffic signals on vehicles. HASSE, J. N., 12, Walkerville Road, St. Peter's, South Australia. Dec. 10, 1934, No. 35454. Convention date, March 12. [Class 118 (ii)] A roact - trattic signal comprises a tubular member 1 terminating in a housing 4 with uncoloured lenses 5 and 6 directed to front and rear of the vehicle respectively and containing a coloured lamp 10 which is projected into the housing 4 and switched on when a signal is to be given. The lamp is held in its normal position by the spring- pressed locking disc 30 and is projected by handle 27 through link 25 and rod 23, the return being by spring 33 or, if this is not provided, by hand. The link-work may be replaced by a Bowden cable. When the lamp is being projected, movement of the sleeve 14 is stopped by screws 15 co-operating with slots 16 and further movement of the handle 27 moves member 18 against the action of spring 20 to make contact between the conductor 21 and the terminal of the lamp. When the lamp is to be returned to its normal position, the spring 20 forces the conductor away from the lamp to extinquish the lamp. The lenses 5, 6 being uncoloured prevent a false signal being given by the headlamps of another vehicle shining through the housing 4.
Patent GB-767657-A (GB)
Title: Process of preparing mulch for agricultural purposes
IPC: C05F3/00
Filed: 1953-12-21
Abstract: 767,657. Treating garbage and sewage; fertilizers. FAIRWEATHER, H. G. C. (Wilbro Corporation). Dec. 21, 1953, No. 35495/53. Class 111. [Also in Groups II and VIII] Garbage (other than that consisting wholly of paper) and other fresh organic matter of solid fibrous character subject to putrefaction, is subjected to mechanical disintegration in the presence of water sufficient for the insoluble fibrous content of the disintegrated mixture to be about 5 per cent, the disintegration being continued for such a time that the mass is reduced to a free flowing pulp whereby a product is obtained which is free from odour and no longer subject to putrefaction. A suitable apparatus is shown in Fig. 1. A tank 1 is charged through a hopper 6 with material to be disintegrated together with water sufficient to cover the upper edge of a concave impeller 5, the latter being fitted with abrasive grains. The impeller 5, supported on a shaft 4 is driven by a motor 17 through a sprocket 21 and a handoperated clutch 22, 23. The sprocket 21 also has an associated belt pulley for driving a pump 13 the input side of which is connected via pipe 11 and cocks 12 and 10 to the bottom of tank 1 for removing the disintegrated contents thereof. The tank 1 is also provided with a recess 7 to retain heavy insoluble pieces such as rocks and nails. The apparatus is mounted on a carriage 2. Suitable refuse for disintegration includes garbage, dry leaves, grass, grass clippings, stable and poultry manure and straw ; in addition paper may be added to increase the fibrous content. The sludge resulting from the disintegration may be applied as such to the soil before or after planting whereby an opaque mat forms on drying, which is water permeable but sufficient in continuity to prevent weed growth. If desired the mulch may be dried either by spreading it on the ground or more preferably on a fine screen whereby the water draining away may be recovered and utilized, optionally for the disintegration of a fresh charge in the disintegrator. The dried web of material obtained in this way may be crushed and dried by hot air.
Patent GB-911444-A (GB)
Title: Improvements in and relating to means for guiding a cage or skip in a mine shaft
IPC: B66B7/02
Filed: 1959-10-20
Abstract: 911,444. Mine cages and skips. STAMICARBON N.V. Oct. 20, 1959 [Oct. 24, 1958], No. 35558/59. Class 78 (3). Guide means for a cage or skip 2 comprises two vertical guideways 3 each having two inner faces 15, 16 forming tracks for guide rollers 7, 8 on the cage or skip. The rollers 7, 8 are resiliently supported by means of levers 9, 10 and buffers 11, 12.
Patent GB-1194464-A (GB)
Title: Circuit Arrangement for Recording Information in and Recovering it from a Magnetic Core
Inventor: REEFMAN PIETER DAVID CORNELIS
IPC: G11C27/02
Filed: 1968-07-25
Abstract: 1,194,464. Magnetic storage arrangements. NETHERLANDS POSTAL & TELECOMMUNICATION SERVICE, DIRECTOR GENERAL OF. 25 July, 1968 [10 Aug., 1967], No. 35558/68. Heading H3B. The flux of a magnetic core K, Fig. 6, having a substantially rectangular hysteresis loop is switched by discharge of a capacitor C through a resistor R1-R10 and a coil L from a saturated level #1, Fig. 2, to a level #3 intermediate the saturation level limits #<SP>1</SP>, #<SP>4</SP>, and is subsequently restored in steps 1-5, Fig. 5, to its initial level #1 by a train of pulses each of the same volt-second content, the extent of flux change #1 to #3 caused by the capacitor discharge being denoted by the number of restoration pulses required. The capacitor is shunted by a Zener diode Z and is charged through a resistor Ra from a D.C. supply +24 v. when relay A is released. Closure of switch S operates relay A and so completes the capacitor discharge path through a resistor R1-R10, each of a different value, selected by a stepping switch contact T. The value of resistance selected determines the extent by which the core flux changes from the saturated level. The change of core flux, #1 to #3, is read out by stepping the switch contact T to the next position so as to connect a pulse generator G to the coil, an output for each generator pulse being applied to a recording device until the core flux is restored to its initial saturated level #<SP>1</SP>. An oscillatory capacitor discharge is obtained as shown in Fig. 3, the positive half-cycle causing the core flux to be driven further into saturation #2, while the negative half-cycle switches the flux to an intermediate level #3.
Patent GB-1423338-A (GB)
Title: Propellents
IPC: C06B23/00
Filed: 1958-11-05
Abstract: 1423338 Propellants IMPERIAL CHEMICAL INDUSTRIES Ltd 5 June 1959 [5 Nov 1958] 35605/58 Addition to 1423337 Heading C1D In the process for the production of a cast propellant claimed in Specification 1,423,337, the casting liquid is introduced into the blend of the two nitrocellulose compositions without any evacuation. The amount of potassium salt in the final product is preferably 1 to 7% by weight. Additional platonization agents specified are lead citrate, lead salicylate, lead 2:4 dihydroxy benzoate, lead sulphite, lead oxide, cupric oxide, and the salicylate, oxalate, and 2:4 dihydroxy benzoate of copper. In additional examples, carbon black is present in the composition and nitrocellulose is used in the form of pyronitrocellulose.