baber/WOPTO huggingface dataset:
Patent GB-537901-A (GB)
Title: Improvements relating to electric discharge lamps
IPC: H05B41/18
Filed: 1940-03-01
Abstract: 537,901. Discharge lamps. BRITISH THOMSONHOUSTON CO., Ltd., and SCOTT, W. J. March 1, 1940, No. 3875. [Class 39 (i)] Relates to electric discharge lamps of the type in which the cathode is pre-heated prior to the initiation of the discharge and the pre-heating current is then interrupted, and in which the cathode has a resistance of such value that a preliminary arc discharge takes place between the ends thereof when it is heated, and consists in providing, during manufacture, that the product of the resistance of the cathode and the current therethrough when heated is such that the preliminary arc current is not substantially less than the lamp discharge current. The lamp may be coated internally with fluorescent material and the cathode may be provided with auxiliary anodes as described in Specification 533,451, the auxiliary anodes being disposed one on each side of the cathode and extending along its whole length. Specification 462,363 also is referred to.
Patent GB-328928-A (GB)
Title: Improvements in ballast cars
IPC: B61D7/06
Filed: 1929-02-05
Abstract: 328,928. Dehn, F. B., (Hart, H. S.). Feb. 5, 1929. Hopper wagons; doors, wagon.-In a railway dumping-wagon of the kind wherein longitudinally disposed hoppers with oppositely inclined surfaces 5, 6 are located on at least one side of a central sill 4 and co-operate with discharge doors 8 to direct the material in the desired direction, an additional directing or shedding surface or surfaces 21, 22 is positioned below each hopper opening 7 and has its lower edge or edges arranged in a line or lines A, B, which pass through the rails at points below the heads of the latter and are inclined to the horizontal at the angle of repose of the ballast or other material which the wagon is designed to carry, such an arrangement preventing the rails from being covered by the material in the process of discharging. In the construction shown, hoppers are located at each side of the centre sill 4, the discharge openings 7 are normally closed by doors 8 having the shape of a sector of a cylinder, and a double shedding surface 21, 22 is arranged below each opening 7, so that the material can be directed either between or to the outside of the rails. The doors are mounted on longitudinal rotary shafts 9 operated from transverse shafts 17 through the medium of worms 16 and wormwheels 15.
Patent GB-539244-A (GB)
Title: Improvements in sparking-plugs
IPC: H01T21/02
Filed: 1940-03-01
Abstract: 539,244. Sparking plugs; uniting materials by heat. K. L. G. SPARKING PLUGS, Ltd., and CARINGTON,. C. M. March 1, 1940, No. 3916. [Class 7 (iv)] [Also in Group XXXVI] For sealing the central conductor in a ceramic insulator, a mixture 18 of glass and a powdered or granulated material infusible at the fusion temperature of glass is inserted and the assembly heated to glass-fusion temperature. Borosilicate glass and powdered alumina may be used within an alumina insulator. Material known under the Registered Trade Mark "Corundite " may be used. The central conductor comprises a steel case 13, a copper sheath 14 and a molybdenum wire 17 traversing the sealing material and a screwed terminal 16. The insulator, sealing mixture components and the conductor have substantially the same thermal co-efficient of expansion. Specifications 29,777/39 and 535,594 are referred to.
Patent GB-389249-A (GB)
Title: An improvement in or relating to fireworks
IPC: F42B4/20
Filed: 1932-02-10
Abstract: 389,249. Fireworks. STANDARD FIREWORKS, Ltd. and GREENHALGH, R., Half Moon Street, Huddersfield. Feb. 10, 1932, No. 3919. [Class 9 (ii).] Charges c producing coloured flames are attached to catherine wheels or the like comprising a tube of driving mixture b around a disc a having a central hole a<1> for a pivot pin. Two charges c of different colours may be used. These charges may be placed over the disc, or coiled between the disc and the tube b, or, as shown in the Figure, may be placed in recesses in the disc. The charges and the tube are secured in place by paper bands d.
Patent GB-972761-A (GB)
Title: Orthodontic apparatus
IPC: A61C7/00
Filed: 1961-02-02
Abstract: 972,761. Orthodantic apparatus. H. A. TRAIGER. Feb. 2, 1961, No. 3969/61. Heading A5R. Orthodantic apparatus comprises a retention body having means of attachment to groups of natural teeth, at least one posterior mounting member carried on the retention body and traction means for exerting corrective pressures on selected teeth. An arcuate body 17 of channel cross-section is secured over the front teeth of the upper or lower jaw by dental cement which may be omitted in places to subject the teeth to corrective pressures or by engagement of the sides with the narrower parts of the teeth adjacent the gum. Wire loops 28 having hooks 29, 31, 32 extend rearwardly from the body 17 around the remaining upper and lower teeth at each side of the jaw. Elastic bands 33 are secured over the hooks and around or against malpositioned teeth to exert corrective pressures thereon. The hooks are either integral with the loops or provided by adjustably mounted brackets. Hooks 24, 26 on the ends of the body 17 are used in co-operation with the hooks on the loops for the attachment of elastic bands. Elastic bands may also extend between the loops and hooks (not shown) secured by orthodantic bands on individual teeth. A pair of bodies 17, 28 may be mounted on the upper and lower teeth simultaneously and interconnected by elastic bands 48 to exert a corrective pressure on the lower jaw. The retention body may comprise separate arcuate sides 97, 98 (Fig. 9) each having flanges 100, 101 which adjustably overlap to cover the teeth and define spaces through which malpositioned teeth are exposed. Hooks 106 arranged along the sides are used to mount elastic bands for correction of exposed malpositioned teeth.
Patent GB-311260-A (GB)
Title: Improvements in, or relating to, water-trapped gullies
IPC: E03F5/04
Filed: 1928-02-08
Abstract: 311,260. Downing, J. F. Feb. 8, 1928. Traps. - In double and single water-trapped gullies comprising a chamber leading to the sewer and a canopy integral with the walls of the chamber and the gully tank or body, with the depending part of the canopy overlapping the inlet to the chamber, a cleaning chamber is provided, externally of the gully tank but integral therewith, immediately over the outlet from the chamber to the sewer and projecting upwardly to the level of the top of the gully tank. In the double-trapped gully shown, the chamber b is divided by a downwardly projecting partition e forming part of the gully wall f. The imperforate front wall h of the chamber b is contiued upwards and turned over to meet the gully wall f to form the roof of the canopy. The water from the tank a passes over the side walls k of the chamber b through inlet spaces l. The upper part of the wall h and the roof j of the canopy are containued laterally beyond the chamber b and are joined to the side walls of the tank a, thus forming partitions n at the sides of the chamber b under which the water must pass to the inlets l. Gratings z may project downwards from the lips n. A hole o in the canopy roof j is closed by a plate p of slate or other breakable material, so that if the water in the top tank freezes the plate p may be broken to allow water to pass through the hole o. A chamber q on the side of the tank a above the vertical sewer outlet g and the outer part c of the chamber b is closed by a pivoted plug r, which is held closed by the bevelled edge v of the grating i and is formed with a flange s engaging in a recessed rim u to form an air-tight and water-tight joint. The plug r is removed for cleaning purposes. In a single-trapped gully the partition y between the chamber b and the outlet g is omitted, the bottom of the chamber b being horizontal.
Patent GB-369334-A (GB)
Title: Improvements in or relating to the treatment of textile fabrics
IPC: D06B1/00
Filed: 1930-10-11
Abstract: Paper, textile fibres, partly or wholly spun yarn, knitted or woven fabrics, &c. are treated in a homogeneous gas stream containing finely divided solids or liquids in the form of a mist which are taken up by the materials treated by causing a sudden or substantially sudden reduction of velocity of the matter carried by the gas stream, the reduction in velocity being preferably effected by a reduction in pressure.  The suspended materials may be water, oil, waterproofing media, rubber solution and the process may be used for the bronze dusting of materials, the coating of photographic paper with barytes and making waterproofed translucent paper, cellulose, &c.  The apparatus used, which is the same as that described in Specification 364,130, may be p  divided into three portions, in the first the material is treated with a gas containing a volatile liquid a part of the liquid being deposited in the material by a reduction in temperature or pressure or both, in the second with a gas containing a liquid or solid in suspension, and in the third the material is dried, heated, or cooled.  The material may be cooled before entering the apparatus.  Specifications 16765/86, 15171/95, and 13356/05, [all in Class 15, Bleaching &c.], are referred to.
Patent GB-1164343-A (GB)
Title: Improvements in Pressure-Limiting Devices for Hydraulic Brake Systems.
IPC: B60T8/26
Filed: 1967-01-26
Abstract: 1,164,343. Brake pressure limiting devices; valves. REGIE NATIONALE DES USINES RENAULT. 26 Jan., 1967 [31 Jan., 1966], No. 4008/67. Addition to 1,094,099. Headings F2F and F2V. In a device of the kind claimed in Specification 1,094,099 the elastically deformable partition means comprises a plunger piston 216<SP>1</SP>, Fig. 2, and an elastically deformable spring 217 of greater diameter than the plunger piston which moves in the second passage against the action of the spring. In a modification the housing is in two separate parts, one of which contains the valve and the other contains the elastically deformable partition, the housing parts being mounted in parallel between the supply fluid inlet and the outlet leading to a rear-wheel brake circuit.
Patent GB-931202-A (GB)
Title: Improvements in and relating to gas control valves
Inventor: WARBURTON JAMES EDMUND
IPC: F16K35/02
Filed: 1961-02-02
Abstract: 931,202. Valves. RADIATION Ltd. Dec. 29, 1961 [Feb. 2, 1961], No. 4011/61. Class 135. A gas-control valve is constructed to permit variation at will in gas flow between two predetermined rates by actuation between a high and low rate setting position but to stop gas flow when actuated to any position below said low rate setting position. The valve comprises a housing 1 with an inlet port 2 and an outlet port 3 in a bore 4 containing a rotatable and axially displaceable valve member 9. When the member is axially displaced to the left against spring pressure a pin 26 on the spindle 8 traverses slots 34 in washers 29, 30 and is locked behind the innermost washer 29 once the spindle is turned to hold a single beat closure 12 off its seat 14 to provide the minimum gas flow through a bore 20. Rotation of the spindle causes the pin to engage a slot 35 when a port 16 registers with the inlet 2 and subsequently to engage a slot 36 when the port 16 and a port 17 both partly register with the inlet to provide a setting intermediate minimum and full on. In the latter setting the pin 26 engages a shoulder 37 on a series of washers 28. To prevent accidental operation of the valve, additional slotted washers may be provided on the outer surface of the washers 30 to receive the pin 26 when the valve is in the off position. Specification 931,201 is referred to.
Patent GB-773884-A (GB)
Title: Improvements in or relating to locks
IPC: E05B65/44
Filed: 1954-02-11
Abstract: 773,884. Locks. HENSEL, E. Feb. 11, 1954, No. 4029/54. Class 44. In a mortice lock a sleeve 2 houses a sliding bolt 3, and a projection 11 on the sleeve projects into a slot 9 in the bolt. A cylindrical plug 1 is shaped to receive a shouldered key 8 which on insertion rotates in either direction for a quarter of a revolution in a semi-cylindrical keyway shaped with lands 7. The plug 1 is offset from the axis of the bolt 3 and during its revolution the key engages a talon 9<SP>1</SP> in the bolt to throw the bolt into or out of engagement with a keeper 6 in a jamb 14. A catch 4 lies in the slot 9 in the bolt and retains it in the shot position by engaging the projection 11. The catch is released by the pressure of the key bit on arm 4<SP>11</SP> of the catch which is pivoted against spring 5. The parts of the lock can be inserted and glued into simple borings made in a door and jamb and are preferably made of an injection moulded plastic material. A pip is provided on the end of the bolt to mark the position of the keeper bore on jamb 14.
Patent GB-231291-A (GB)
Title: Improvements in latch locks
IPC: E05B59/00
Filed: 1924-02-19
Abstract: 231,291. Thompson, H. A., and Nettlefold & Sons, Ltd. Feb. 19, 1924. Latches, sliding.-A spring shot latch bolt which is retracted by a pivoted lever acted upon by the follower has two coil springs of phosphor bronze to ensure smooth return of the parts to normal position, one acting directly on the latch bolt and coiled round the shank of the bolt, and one acting between an arm of the lever and a stop on the casing. The bolt-withdrawing lever D is pivoted at D‹ and has a slot D' through which passes the shank C of the latch bolt B. The shank is provided with a collar C<1> behind the slot D<1>. The lever D has a free arm G with a stud G<1> which engages a coil spring H, the other end of which abuts on a fixed stop I of channelshape secured to the casing. A second spring E is coiled round the bolt shank C and abuts at one end on the fixed stop F' and at the other on a collar C<2> on the shank.
Patent GB-229489-A (GB)
Title: Improvements in and relating to box spanners or wrenches
IPC: B25B23/10
Filed: 1924-06-17
Abstract: 229,489. Fuller's United Electric Works, Ltd., and Welch, A. P. June 17, 1924. Rigid-jaw wrenches; retaining in engagement. - Box spanners or wrenches of the kind in which the nut is gripped by a spring d passing through a slot a in the box spanner c, are so constructed that the axes of the shank e, the box c, and a fluted cylindrical handle on the shank e are all coincident, so that the device can be used and axial pressure applied whilst the device is held in one hand.
Patent GB-924010-A (GB)
Title: Improvements in and relating to wellpoints
Inventor: CHAPMAN HAROLD ALFRED
IPC: E21B7/18
Filed: 1960-02-05
Abstract: 924,010. Wellpoints. CAMPBELL & McGILL Ltd. Feb. 3, 1961 [Feb. 5, 1960], No. 4252/60. Classes 68 (1) and 85. In a wellpoint a disc valve 16 is provided to close off the lower end of the outer tube 1 during a jetting operation.
Patent GB-1275391-A (GB)
Title: Improvements in or relating to aerial systems
Inventor: NOLAN SEAN ULCI
IPC: H01Q9/44
Filed: 1970-01-29
Abstract: 1275391 Aerials MARCONI CO Ltd 28 Aug 1970 [29 Jan 1970] 4259/70 Heading H4A A wide band substantially omni-directional H.F. aerial system comprises a pair of dipoles which are in mutually perpendicular planes, and which each consist of two respective coplanar half dipoles (D1, D2), (SD1, SD2) sloping downwardly and outwardly from a common upper centre. A feeder, such as a twin wire line F, is connected to the upper ends of the half dipoles D1, D2, and the lower ends of said half dipoles are respectively connected to the lower ends of the half dipoles SD1, SC2 by lines CF1, CF2, which are substantially non-radiating, and which may be screened cables. The feeder F may be run up a vertical supporting mast, insulators I being interposed between the outer ends of the half dipoles and the ground.
Patent GB-1407233-A (GB)
Title: Powerless lift with automatic balance and differential action
IPC: B66B9/00
Filed: 1972-01-29
Abstract: 1407233 Lifts K S SMART 10 Jan 1973 [29 Jan 1972] 4284/72 Heading B8L A powerless lift comprising a lift car with two platforms which form a step at a lower level and a reverse step at an upper level, the two platforms being suspended respectively from the larger and smaller barrels of a differential drum whereby when a person steps on to the lower platform, the remote end of the platform suspension rope rises to pick up weights until the person is counterbalanced, whereafter the person steps up on to the other platform and descends if the other platform is suspended on the larger diameter barrel or ascends if its on the smaller diameter barrel. In the latter case, a carrier with the counterbalance weights thereon is transferred to the smaller diameter barrel at the mid-point of travel whereby the ascending person is counterbalanced to retard his progress and is eventually halted. The counterweight carrier is similarly transferred during descent of a person. When a passenger steps on to the lower platform at the lower level, latches on the carrier at the remote end of that platform suspension cable rise to lift and accumulate weights from latches on a fixed structure, until balance is reached. As the passenger steps on to the upper platform, it descends slightly against springs to operate a control rope causing retraction of all the unloaded latches on the fixed structure so that movement of the picked up weights is not impeded as the car ascends. The car starts to decelerate once the cable supporting the weight carrier is transferred on to the small barrel of the drum at mid travel and the car is finally stopped by deposition of the balance weights on to latches at the lower level and by a damper arrangement for the car at the upper level. As the car approaches the lower level, the balance weight carrier picks up more weights at the top of its travel, to halt the car, after which the weights are deposited on to the fixed upper level latches as the carrier settles when the passenger steps from the platform. In a second embodiment, the system comprises two elevator cars and a separate weight carrier is not required.
Patent GB-785470-A (GB)
Title: Improvements in or relating to load supporting props
Inventor: GULLICK ERNEST DONALD MERTON
IPC: E21D15/54
Filed: 1955-02-14
Abstract: 785,470. Pit props. DOBSON, Ltd., W. E. & F. Feb. 7, 1956 [Feb. 14, 1955], No. 4341/55. Class 20(2) A pit prop comprises a column or columns 2. Fig. 1, engaging base and head plates 1, 6 by ball and socket joints 7, 16, springs 20 welded to the base or head plate holding the column upright against load on the head plate. The column may comprise telescoping parts 2a, 2b extensible by fluid-pressure. In a modification a single column 25, Fig. 10, is supported by a corrugated resilient ring 42 held between plates 40, 41 and frame 39. The upper ball joint is surrounded by a resilient sleeve 52 held in a sleeve 49 by a plate 51 which is notched so that it may be pushed up over webs 50 and turned to engage slots 54. The sleeve 49 is secured to a plate 46 having side flanges 47 and supporting a load supporting bar 48.
Patent GB-608266-A (GB)
Title: Obtaining valuable light-oil fractions from fuel distillates
IPC: B01D3/40
Filed: 1946-02-12
Abstract: Orthoxylene of high purity, i.e. above 90 per cent pure, is separated from a mixture containing isomeric xylenes by distilling the mixture to a stage beyond that at which a fraction of lowest freezing-point is obtained and collecting the fraction having a freezing-point corresponding to that of pure orthoxylene.  The reflux ratio is preferably about 10 : 1 before the fraction of lowest freezing-point is obtained and is increased to at least 13 : 1 for further distillation, increases in the ratio being made for higher freezing-points recorded for the fractions separated, i.e. to 15 : 1 after -55 DEG  C., to 20 : 1 after -45 DEG  C., the latter ratio being maintained until a fraction having an o-xylene content of at least 90 per cent is obtained.  An organic liquid of higher boiling point than the xylenes, e.g. heavy petroleum oil, may be included in the distillation mixture.  In the example, a mixture of a xylene fraction obtained from acid-washed light oil and 10 per cent of a light oil heavy solvent fraction similarly washed are distilled in a still communicating with a rectifying column having thirty-five bubblecapped trays as described above.
Patent GB-827119-A (GB)
Title: Ski-stopping device
IPC: A63C9/085
Filed: 1958-02-11
Abstract: 827,119. Skis. GERTSCH, E. Feb. 11, 1958 [Feb. 14, 1957], No. 4479/58. Class 132(1) A ski-stopping device comprises a brake lever pivoted to the ski which, on release of the ski-fastening moves from an ineffective to an effective position protruding downwardly beyond the sliding surface of the ski to brake the detached ski. Ski-boot 2 has bolts 20 at its front and rear by which it is held in a safety binding comprising a front part 3 and a rear bolt 22 both secured to the ski 1 . Bolt 22 is movable manually against the tension of a spring 21 by a lever 23. A lever 6 of stiff sheet material is pivoted on a pin 5 mounted in members screwed to the sides of the ski and is biased to its vertical position, chain dotted lines Fig. 1, by a torsion spring. The rear arm 6a of the lever 6 carries a transverse terminal portion 6b which during skiing is held against the ski by the toe of the ski-boot thus holding lever 6 in its inoperative position. When the boot is removed suddenly, e.g. when the skier falls, the lever is released, end 6c engages the snow and the ski is prevented from sliding away. The lever may be locked in its inoperative position during transport by the end of a part slidable by means of flap 9a in grooves 10a in a member 10 secured to the ski and having a part 10b which covers pivot 5 and sping 7 (Fig. 2, not shown). As shown in Fig. 3, boot 2 is retained in a foot plate 13 at whose front end there is a pin 14 engaging a recess in a support 15 adjustably fastened to ski 1 by longitudinal slots. Hinged to a lateral part of support 15 there is a brake lever 17 spring biased to the position shown in chain dotted lines and having an extension 19 normally held under foot plate 13.
Patent GB-102715-A (GB)
Title: An Improved Planescope or Range Finder for Aircraft.
Inventor: HARRY ATKINS
IPC: F41G3/24
Filed: 1916-03-28
Abstract: 102,715. Atkins, H. Jan. 17, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Sights and methods of sighting.-Relates to sighting and aiming devices for use in dropping bombs from aircraft, and comprises an arrangement wherein a binocular telescope 1, 2 mounted in gimbal rings 3, 8 is adjusted in inclination according to the speed and altitude of the aircraft by means of a hand-operated pinion 16 which engages a rack 17 and thereby rotates a flat annulus 11, graduated for altitudes and attached to the binoculars, having a sliding bearing in brackets 13, 14 formed on the gimbal ring 3. A similar annulus 21 graduated for engine speeds is fixed in the brackets 13, 14 and bears against the ring 11. In adjusting the inclination of the binoculars, the annulus 11 is rotated until the division of the graduations 20, indicating the altitude, is brought into alinement with the division on the adjacent annulus 21 corresponding to the engine speed. The binoculars are focused by means of a spindle 25, having oppositely-screwed ends engaging connecting plates 28, 29 and operated by means of a milled wheel 30. A modification is described in which a camera body with a ground glass observation screen is substituted for the binoculars.