baber/WOPTO huggingface dataset:
Patent GB-240805-A (GB)
Title: Improvements in and relating to automatic reclosing circuit breaker systems
IPC: H02H3/06
Filed: 1925-08-29
Abstract: 240,805. British Thomson-Houston Co., Ltd., (Assignees of McNairy, J. W.). Oct. 3, 1924, [Convention date]. Electric protective arrangements.-In an automatically-reclosing circuit-breaker system employing an automatic circuit-breaker which is held in the closed position by normally energized electrical means and is associated with an electromagnetically operated switch or contactor and other relays of the reclosing equipment, the holding force of the circuit-breaker maintaining means is increased during the closure of the circuit breaker and until the operation of the associated electromagnetic switch or contactor. In the system shown in Fig. 1 employing an automatic circuit-breaker of the type described in Specification 187,993, in association with reclosing gear as described in Specifications 220,275 and 232,226 the excitation of the normally energized maintaining coil 13 is arranged to be increased during the automatic reclosure of the circuit-breaker as described in Specification 227,118 and until the subsequent opening of the, feeling-out contactor 16 takes place. The coil 13 is normally in series with a resistance 20 connected between the supply line 10 and earth. During the reclosing operation after the circuit-breaker has been tripped on overload the winding of the reclosing relay 34 is placed in shunt with the resistance 20 so increasing the current through the winding 13 during the initial part of the circuit-breaker closing movement. When the circuit-breaker is in its intermediate position a short circuit is formed around the resistance 20 through back contacts of the circuit-breaker and contacts of the relay 16 so that the coil 13 is still further over-excited. being now supplied with the full line voltage. The re-energization of the maintaing coil is however reduced to normal on the closing of the circuitbreaker contacts 36, 37 and the subsequent deenergization of the feeling-out contactor 16. A further embodiment of the invention is described in connection with an automatic load-limiting protective system for a dynamo in which the circuit-breaker is associated with an electromagnetically-operated line contactor.
Patent GB-1332733-A (GB)
Title: Furniture
IPC: A47C19/20
Filed: 1971-04-19
Abstract: 1332733 Bedsteads H FICKLER 19 April 1971 [ 20 Feb 1970] 21770/71 Heading A4J In a two-tier bunk arrangement, the two bed frames 3, 4 are inter-connected by disconnectible means providing pivoted links to enable the upper frame to be lowered, while remaining parallel to the lower one, to facilitate bed-making. The two bunks may be used as independent beds and their height may be varied by detachable legs. In the form shown the corner posts 14, 15 of the respective bed frames are hollow profile members and the inter-connecting means comprise links 13 with end members 11, 12 pivoted thereto at 7..10 respectively, the members 11, 12 being formed with pins to fit into the ends of the frame members 14, 15. Legs 20, with pins 21 fitting into the frame members, support the structure with the beds at the required height. To assist return of the upper bunk to its raised position weight-compensating springs may be provided, e.g. tension or compression springs connected diagonally between the upper and lower frames or torsion springs associated with the pivots Figs.2 - 4, (not shown).
Patent GB-614712-A (GB)
Title: An improved closet seat for children
IPC: A47K13/06
Filed: 1946-07-22
Abstract: 614,712. Closet seats. McARD & CO., Ltd., R., and McARD, L. July 22, 1946, No. 21774. [Class 26] A child's closet seat of the kind comprising a seat rim A adapted to be supported upon a normal sized closet seat or basin top, in combination with a back and side members G hingedly connected to said rim to be capable of folding against the rim, is characterised by the provision of a strap N passed through eyes in or on the foldable parts to hold the latter erect for use, and adapted to fasten across the front of the seat to keep the child in place. The rim A and members G may be of moulded plastic material. The seat is positioned by means of a stud C carrying a detachably secured retaining member (not shown) to engage under the edge of the supporting seat or basin, and lugs D which may be hook-shaped. To prevent the parts G falling outwardly integral lugs F may be fitted with shoulders L adapted to engage abutments M on the rim A and between the lugs E ; or the parts L, M may be dispensed with and outward movement of the side members prevented by forwardly projecting flanges on the seat back.
Patent GB-1348319-A (GB)
Title: Package of plastic bags
IPC: B65D71/00
Filed: 1971-04-19
Abstract: 1348319 Packing plastics bags INDUSTRIELE ONDERNEMING WAVIN NV 19 April 1971 [19 Feb 1970] 21875/71 Heading B8C Plastics bags 1 are folded about three axes 3, 4, 5 to a W-shape and are then nested. The bags may first be folded in half about an axis at right angles to the axes 3, 4, 5. The nested bags are then placed in an envelope 7 which may have a bag supporting ridge at its bottom. Alternatively, a skeletal holder (9, Fig. 3) has a central bag supporting partition (10) which is straddled by the bags, and side ledges (13) which hold the edges of the bags.
Patent GB-168497-A (GB)
Title: An improved pocket clinometer
IPC: G01C9/12
Filed: 1920-07-22
Abstract: 168,497. Wright, Ltd., J. & E., and Rule, J. W. A. July 22, 1920. Cinometers.-A pocket clinometer comprises a base or casing 2 having two pivoted folding levers 3, 8 of which the leaf 3 can be turned into a position at right-angles to the base and carries a freely-swinging pointer 7 pivoted at 6 to the leaf, while the other leaf can be extended into a position, defined by a stop, in which a scale 15 thereon coacts with the pointer to indicate the inclination of the surface on which the base is placed. The leaf 3 is pivoted at 1 to the base and has a flange 4 which abuts against the end of a plate in the base when the leaf is opened to its correct position. The leaf 8 is also pivoted at 1 and has a stepped portion 9 adapted to abut against a step 10 on the leaf 1 to define its opened position. Sighting apertures 16, 17 are respectively formed in the casing and in the flange 4 to allow the instrument to be used as a sighting clinometer; additional apertures 21, 22 are for use in sighting depressed objects. The leaves 3, 8 are provided at their outer ends with projections 11, 12 so that they can be used as callipers, the separation of the projections being read on a scale 18 or 19. The pointer 7 may be graduated for use as a depth gauge. The instrument can be folded down as shown in Fig. 5.
Patent GB-759318-A (GB)
Title: Device for igniting and stabilizing a welding arc
IPC: B23K9/073
Filed: 1954-07-27
Abstract: 759,318. Supply systems for welding arcs. SOC. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE. July 27, 1954 [July 30, 1953], No. 21929/54. Class 38 (4). Relatively low voltage recurrent arc-initiating and -stabilizing pulses are injected over a spark gap into an A.C. welding arc, particularly one used for welding aluminium and operating in a shielding atmosphere of argon or helium, the spark gap working in a gaseous medium having a dielectric strength less than that of air and arranged to break down at a D.C. voltage substantially less than 1500 volts, say, between 250 and 450 volts. The pulses, which preferably recur at audio frequency, are obtained from a condenser charged from the welding circuit, or other source, and discharged, when the sparkgap breaks -down, into the arc. The employment in the gap of a dielectric medium with a lower disruptive strength than air provides for greater spacing between its electrodes, whilst the formation of the electrodes of aluminium allows still greater spacing. The gap may be in a closed container filled with the gaseous medium, or the container may be arranged to permit flow therethrough of the gaseous medium, which may be the same medium as used for shielding the arc. In the arrangement shown in Fig. 2, the welding circuit E, W, fed from transformer T<SP>1</SP>, is shunted by a stabilizing circuit comprising the spark gap S and a condenser C which is permanently on charge over a resistor R<SP>1</SP> from a battery B of insufficient voltage to break down the spark gap. The combined voltages of the battery and the open circuit voltage of the transformer are, however, sufficient to break down the gap once per cycle at a time when the arc is tending to extinguish. The battery B may be replaced by a transformer supplied from the mains. Alternatively, a stepup transformer T<SP>2</SP>, Fig. 3, energized from the welding circuit and associated with condensers C<SP>1</SP>, C2, may supply the arc stabilizing pulses. The condensers may be connected as shown, or condenser C<SP>1</SP> may be directly across the secondary winding of the transformer T<SP>2</SP>.
Patent GB-276358-A (GB)
Title: Improvements in compressed air brake systems of the automatic type
IPC: B60T13/36
Filed: 1927-08-20
Abstract: 276,358. Ahond, F. J. M. Aug. 20, 1926, [Convention date]. Fluid-pressure.-To facilitate the charging of the train-pipe and the auxiliary reservoirs of compressed air brake systems of railway trains, the usual single main reservoir is replaced by two reservoirs 3, 6 one of which 6 is connected to the driver's valve and is maintained at the usual pressure somewhat in excess of the normal trainpipe pressure by means of a pressure regulating valve 8 disposed in a pipe connection 7 connecting this reservoir to the reservoir 3 in which a high pressure is maintained by the compressor 1 under the control of a pressure regulator 4. The reservoir 3 provides a reserve supply of compressed air whereby the pressure in the reservoir 6 is substantially maintained during the charging of the train pipe 12 and release of the brakes while the slight fluctuations of pressure in the reservoir 6 due to the opening and closing of the valve 8 produce a succession of air waves in the train-pipe which assists the movement of the triple valves on the vehicles of the train to the release position.
Patent GB-222851-A (GB)
Title: Kitchen gas range
IPC: F24C13/00
Filed: 1924-09-19
Abstract: 222,851. Bourdon, A. V. A. Oct. 4, 1923, [Convention date]. Gas cooking-stoves; ovens; hot-plates; linings; doors; boilers, arrangement of.-A gas cooking-stove comprises an horizontal flue below the topplate, a vertical flue adjacent the oven and leading from the horizontal flue to the chimney, a water-tank in the vertical flue, and burners, with adjustable air-inlets, in the horizontal flue and below the oven, the gases from both burners circulating under the top-plate and around the boiler. In the stove shown the gases from the hotplate burner 20 pass along the horizontal flue formed between the hot-plate and the oven top 17, down the side oven flue containing a water-tank 14a, and thence to the outlet 13. The lower ends of the side walls 3. 4 of the oven are bent as shown in Fig. 1 to form a partition extending across the casing, the ends being again bent to form a channel 5 containing the tubular oven burner 31. Sheetmetal members 8, 9 complete the closure of the bottom of the casing. Sliding dampers 6, 10 in the bottom of the channel 5 and in the member 9 control the air supplies to the burners 31, 20 respectively. The oven comprises a ribbed bottom plate 22 supported on angle members 21 and containing a removable portion 23. At the sides are sheet-metal members 24, the lower ends of which slide in grooves in the plate 22, whilst their upper ends are bent over and engage guides 25 carried by the side walls. The gases pass up between the members and the side walls, into the oven through perforations 26<a> in the tops of the members, and thence through an aperture 18 to the flue beneath the hot-plate. The members 24, together with a horizontal plate 27 supported by them, may be removed in order that objects may be more intensely heated on the plate 2. The oven door 32 is horizontally pivoted, one of the hinges 34 being provided with a counterweight 35. The hot-plate 11 is provided with a ribbed plate 12 having two sets of rings and covers 14. The annular burner 20 is seated in the plate 17, which is provided with air-supplying apertures 19 surrounding the burner. The oven burner comprises an elongated body 31 with a cap 45 having notches 46.
Patent GB-139425-A (GB)
Title: Tractors
IPC: B62D49/00
Filed: 1919-09-09
Abstract: 139,425. Melcher, L. W. Sept. 9, 1919. Frame components, forms of. - An integral frame for a tractor comprises a transverse tubular member, to the outside of which the wheel spindles are bolted, and various brackets adapted to support the engine, driving-gear, mud-guards, seat-support, draw-bar attachment, and a tubular reach extending forward to the steering- wheel. A plan of the frame is shown in Fig. 1, a section in Fig. 5, and a side view of the tractor with one wheel removed in Fig. 10. The transverse tubular member 1<A> is integral with a forwardly-projecting main bracket 3 and with a diagonal stiffening- member 3e. U-bolts 11 secure the spindles 19, on which the road wheels rotate, to the tubular member. The two-cylinder horizontally-opposed motor A is carried by a bracket 2 extending rearwards from the tube 1<A>, and a bracket 8 extending forwards from the main bracket 3. The transverse driving-shaft 6<a>, having pinions on its ends which gear with internal teeth on the road wheels, is mounted in three bearings, two of which are carried by brackets 6<d>, 7 projecting from the main bracket 3, while the third is carried by a bracket 5 integral with the tubular member 1<A>. The rear end of the tubular reach 15 is secured by U-bolts to the underside of a curved bracket 14 integral with the main bracket 3. The forward end of the reach 15 carries a bracket 29 for the steering- wheel, which is operated by worm or other suitable gearing from a steering-shaft 36 extending to the rear within reach of the driver. Mud-guards are supported by rearwardly-extending brackets 9, 10<a> and by portions 9, 10 of the forward bearing brackets. The draw-bar attachment 20 is bolted to the underside of the tubular member 1<A> and is provided with an extension 21 for the seat. The tubular reach 15 supports the radiator 27, and the engine exhaust is discharged into the rear end of the reach.
Patent GB-1031835-A (GB)
Title: Improvements in and relating to methods of manufacturing semi-conductor bodies of silicon carbide
IPC: H01L21/205
Filed: 1963-06-04
Abstract: 1,031,835. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. June 4, 1963 [June 6, 1962], No. 22157/63. Heading H1K. In a method of producing a silicon carbide body with a PN junction, extrinsic material of one conductivity type is deposited on a substratum of silicon carbide material of the opposite conductivity type and the combined total of the concentrations of donor impurities in both deposited and substratum regions is equal to, or greater than (if the substratum is N-type) or less than (if it is P-type) the combined total of the concentrations of acceptor impurities. This ensures that any movement due to diffusion effect, of the PN junction which exists initially at the interface between substratum and deposited regions is such that the junction moves into the deposited region and not into the substratum region where it might reach the outer edge and so be eliminated. Fig. 17 shows a section of a silicon carbide crystal in which 96 shows the boundary between the P-type substratum 93 and the newly deposited material and the PN junction 95 which has been shifted into the deposited region due to diffusion during the deposition process. A thin intrinsic region may exist between the P and N regions. Fig. 13 shows an apparatus for producing such crystals. Lumps of silicon carbide 62 are placed in a graphite vessel 61 to leave a central chamber 83 in which silicon carbide crystals are deposited when the material is heated to 2000‹ C. Aluminium and nitrogen are used as acceptor and donor impurities. Aluminium carbide may be placed around support 64, and a flow of argon supplied via pipe 82; heating is effected by means of copper electrodes 78 with cooling ducts 79, connected to carbon oven 77. The process results in the deposition of P-type silicon carbide crystals containing 7 x 10<SP>18</SP> atoms per c.c. of aluminium. After 4 hours heating, nitrogen is added to the argon so that the silicon carbide material then deposited contains 14 x 10<SP>18</SP> atoms per c.c. of nitrogen in addition to the aluminium. The combined total of donor concentrations thus equals the combined total of acceptor concentrations and under these conditions the PN junction tends to remain stationary at the original boundary (i.e. where the nitrogen was introduced) in spite of subsequent diffusion effects. In a further example, aluminium chloride added to the argon was used to provide the aluminium impurity. Deposition may alternatively be effected from a melt or by evaporation, sublimation, thermal decomposition or reaction.
Patent GB-503385-A (GB)
Title: Apparatus for curling hair
IPC: A45D6/04
Filed: 1938-07-26
Abstract: 503,385. Hair curlers. ZONIS, L. July 26, 1938, No. 22231. [Class 131] In a hair curler, wherein the hair is gripped between two pivoted tubular limbs 1, 2 and wound thereon, the wound hair is subsequently transferred to a spring grip 9 held with its limbs spread apart by a sliding engagement with the notched and curved end 7 of the longer limb 1. Fig. 7 shows a form wherein a sleeve 13 holds together two tubular portions having a slot 12 provided between them.
Patent GB-1186186-A (GB)
Title: Improvements in or relating to Circuit-Interrupting Devices.
Inventor: BARKER JOHN
IPC: H01H33/835
Filed: 1966-05-19
Abstract: 1,186,186. Gas blast switches. ENGLISH ELECTRIC CO. Ltd. 11 May, 1967 [19 May, 1966], No. 22231/66. Heading H1N. The contacts 13 of a gas-blast switch are arranged at the outlet of a chamber 58 arranged within a gas-filled reservoir 15, a piston 54 coupled to an operating mechanism being arranged to draw gas through a first non-return valve 59 from the reservoir during closing and to deliver it through a second non-return valve 56 to the chamber 58 during opening so that a blast of gas from the outlet extinguishes the arc. The fixed contact 19 forms a portion and a movable arcing contact 26 extends through the fixed contact in the closed position to engage a fixed arcing contact 20; a movable main contact 28 has fingers 29 gripping the fixed contact and is coupled to an overcentre spring toggle 70, 72 and operating piston 66 whose position is controlled by valves 80, 81 operated from the ground by rod 77. Filters 25, 63 clean the recirculating blast gas. The reservoir 15 may be filled with air at 1000 Ibs./in<SP>2</SP>. In a modification (Fig. 2, not shown), arcing contact 26 may be solid instead of hollow as shown.
Patent GB-244533-A (GB)
Title: Improvements in and relating to grabs
IPC: B66C3/12
Filed: 1924-09-22
Abstract: 244,533. Smith, W. Sept. 22, 1924. Grab-buckets. - Relates to the locking and tripping mechanism of grabs or excavators of the kind in which the lower sheaveblock 3 slides in guides connected with the grabhead 2 and is looked to the lower cross-beam 4 for closing and raising the grab by means of pawls 14, 15 pivoted on the member 3 and arranged to engage automatically with the head of a catch-pin 12 on the lower cross-beam for closing the buckets, and to be disengaged automatically when the buckets are lowered on to a dump, and the object is to permit of opening the buckets in mid-air either by manipulating the grab chain or by a hand-line. The sheave-block 3 moves between telescopic guides attached to the crossbeam and to the grab-head. The pawls 14, 15 are pivoted on a cross-head 11 on the sheaveblock and are locked in engagement with the pin 12 by a ring 25 pivoted in a ring-shaped lever 23 which is pivoted at 24 on the member 3. The lever 23 co-operates, as described below, with the tripping device 30, 26 and with a weighted lever 20 pivoted at 24. While the grab is closing, a gravity-catch 26 pivoted on the lever 23 passes above a catch-bar 30 attached to the links 7, and on supporting the grab and lowering the sheaveblock in the guides, the catch 26 is held by the bar 30 so that the pawls 14, 15 are freed from the locking-ring 25 and the buckets fall open. The locking-ring 25 may also be disengaged from the pawls 14, 15 to discharge the grab in mid-air by pulling on the line 37 connected to the lever 20 which is provided with a toe 20' engaging a pin 28 on the lever 23. If the closed grab is lowered on to the dump and the chain 31 is slackened. a weight 22 on the lever 20 lifts the locking ring 25 and the pawls 14, 15 fall free of the pin 12 so that buckets may be opened by hauling in the chain 31. When the open grab is lowered to the ground and the chain 31 payed out, the sheave-block 3 is lowered in the guides and a stirrup 19 suspended from the lever 20 comes against a bar 29 on one of the buckets, raising the weighted lever 20 to the position shown in Fig. 2, with the locking ring 25 resting on the ends of the pawls 14. 15. On further descent of the sheave-block 3, the lever 20 is raised, leaving the ring 25 free to fall and the ends 16 of the pawls 14, 15 come against bars 17 on the buckets so that the pawls are brought under the head of the pin 12 and are then locked bv the ring, and the grab can be closed and lifted. Specification 172,761 is referred to.
Patent GB-1013761-A (GB)
Title: Improved compatible single-sideband system
IPC: H03F1/02
Filed: 1962-06-08
Abstract: 1,013,761. Single sideband systems. L. R. KAHN. June 8, 1962 [June 14, 1961], No. 22371/62. Heading H3R. In a compatible S.S.B. transmitter an S.S.B. wave (without carrier) is produced and applied to a pair of networks 26, 28 non-linearly processing its amplitude so that the ratio of its amplitude to the original modulation amplitude increases with the latter; and then each of the network outputs added in summation circuits 30, 46 to pure carrier of amplitudes respectively equal to and twice the maximum amplitude level of the two processed S.S.B. waves (without carrier). This produces 1 PM and 0À5 PM single sideband plus carrier waves respectively, at 100% modulation (PM denoting phase modulation), which are then added together in a mixer 44 and transposed up in frequency from a 500 kc/s. oscillator 56. This output is then limited at 68 and transposed up to transmitter carrier frequency by an oscillator 74 before being modulated by amplitude modulating voltage, preferably derived from the S.S.B. filter 18 by a product demodulator 86 with carrier input. The non-linear networks 26, 28 ensure that at 100% modulation the phase modulation corresponds to 1PM + 0À5PM but at lower modulation levels the phase modulation is less and approximates to that of an unmodified single sideband plus carrier wave. The non- linear networks may each comprise three parallel connected paths, two of them each including a reverse biased diode oppositely poled in each case to pass only positive and negative extremes of the modulation amplitude to a phase shifting tuned network. The bias of each network is then adjusted to give the required total phase deviation as a function of the original amplitude modulation index and the square of that index, i.e. of the amplitude of the S.S.B. (without carrier) wave.