baber/WOPTO huggingface dataset:
Patent GB-673256-A (GB)
Title: Improved method of, and device for, winning coal and such like minerals
IPC: E21C27/18
Filed: 1950-04-26
Abstract: 673,256. Mining-machines. TANNER, E., and ZIGAN, A. April 26, 1950. [April 26, 1949] No. 10295/50. Class 68 (i). For mining mineral there is guided along the face, either on a conveyer 5 or other suitable guide means, a combination of apparatus which comprises an endless chain cutter 1 behind which is secured a kirving tool 3 that removes from the face a strip of undercut mineral the width y of which is less than the depth x of the undercut slit. The dislodged mineral is loaded onto a face conveyer by a shovel 4. The shovel is secured behind and to the tool 3 but does not extend so far into the seam as the tool 3. Knives may be provided on the shovel for stripping the floor.
Patent GB-1043867-A (GB)
Title: Apparatus and process for controlling dendritic crystal growth
IPC: C30B15/36
Filed: 1965-03-11
Abstract: A dendritic crystal is pulled from a supercooled melt in which the temperature decreases in the direction of crystal growth and the cross-sectional dimensions of the crystal are controlled by temporarily increasing the temperature of the melt (to reduce the thickness) and then temporarily decreasing the temperature of the melt (to increase the width).  The rate of withdrawal may also be varied.  The material treated may be silicon, germanium, zinc selenide or sulphide, or the antimonide, arsenide or phosphide of aluminium, indium or gallium.  According to Fig. 7 (not shown), a covered crystal-pulling crucible is heated from above and at its circumference and heat is allowed to dissipate from below. According to Fig. 8 (not shown), the crucible is heated from above and below and heat is allowed to dissipate from a water-cooled gap between circumferential heaters.
Patent GB-793049-A (GB)
Title: Power actuated vehicle window raising and lowering mechanism
Inventor: MASLONKA JAN
IPC: E05F15/16
Filed: 1955-04-12
Abstract: 793,049. Power actuated vehicle window operating mechanism. WILMOTBREEDEN, Ltd. March 21, 1956 [April 12, 1955], No. 10427/55. Class 20(3) In a power actuated vehicle window raising and lowering mechanism of the kind in which a constant torque reversible electric motor 2 is used for effecting the raising and lowering of the window, the fact that, due to the weight of the window, lowering would be effected at a great speed than raising, is compensated for by connecting a resistance 4 in series with the power supply when a switch 3 is operated to energize the motor 2 for lowering the window. In an alternative arrangement the resistance 4 is replaced by a resistance 4a as shown in dotted lines.
Patent GB-556350-A (GB)
Title: Improvements relating to plansifters
IPC: B07B1/46
Filed: 1942-07-27
Abstract: 556,350. Sifting apparatus. SIMON, Ltd., H., and LOCKWOOD, J. F. July 27, 1942, No. 10482. [Class 117] In plansifters of the type in which the sieves c fit like drawers between runners a, b springs f, g are provided which act, during the final part of the movement of the sieve into its service position, to raise the sieve so that it makes sealing but resilient engagement with the runner above. The springs f may be, as shown, secured to the inner ends of the runners, and the springs g to the outer ends of the sieve frame, or vice versa. Alternatively, both springs may be secured either on the runners or the sieve frame.
Patent GB-178449-A (GB)
Title: Improvements in and connected with valve-operating mechanism
IPC: F02M63/00
Filed: 1922-04-12
Abstract: 178,449. Daimler-Motoren-Ges. April 16, 1921, [Convention date]. Void [Published under Sect, 91 of the Act]. Regulating; valvegear.-In valve-operating mechanism, particularly applicable to fuel-injection valves, and of the kind in which a camactuated tappet-rod is adjusted to vary the duration of opening of the valve, the adjustable portion of the tappet rod comprises a swinging section c pivoted at b so that, during its adjustment, the cam roller f moves in an arc of the same curvature as the ascent of the cam d, whereupon the commencement of the opening of the valve always occurs at the same point in the stroke, while the duration of opening and the amount of lift are varied. The section c is connected by a rod g to an adjustable swinging member h.
Patent GB-351589-A (GB)
Title: Improvements in or relating to cinematograph projection screens
IPC: G03B21/60
Filed: 1930-04-03
Abstract: 351,589. Projection screens. BLOOR, H., 80, Ella Road, West Bridgford, and MITCHELSON, H. M., 713, Mansfield Road, Sherwood, both in Nottingham. April 3, 1930, No. 10533. [Class 97 (i).] Projection screens comprise a fabric sheet having a surface of natural or artificial silk presenting fine ribs disposed close together and extending across the sheet, preferably horizontally. The sheet may be positioned immediately in front of a second sheet which may have a raised or pile surface, and may be of grey, aluminium or other colour. The second sheet may consist of " Madras " chenille " Leno chenille, &c., or may be united to the first, the two sheets being produced as a single fabric on one lace curtain machine. Methods of producing the united sheets are described. Specification 332,882, [Class 97 (i). Optical systems &c.], is referred to.
Patent GB-234609-A (GB)
Title: Improvements in or relating to railway-signalling apparatus
IPC: B61L3/04
Filed: 1924-04-29
Abstract: 234,609. Terrett, H. C. April 29, 1924. Track apparatus actuating signals on, and for stopping, trains; wire and like compensators.-In apparatus of the kind in which a transversely movable track ramp member 5 set in conjunction with the usual semaphore signal coacts with a depending train-carried shoe 3 to sound an alarm on the train or apply the brakes when the signal is at danger, and in which lost motion is provided for in the connection between the separating lever and the track device, the member 5 is mounted on a sliding bar 11 with upstanding jaws 15, 16 engaged by the lower end of an arm 14 on a counterweighted lever 12. The weight normally holds the member 5 in the danger position, from which it is moved by chain &c. connection between the lever 12 and the cabin signal lever not shown. The jaw 16 has a curved extension, and arm 14 engages this jaw during the initial portion of its movement, after which the arm 14 moves idly with its end in proximity to the curved portion of the jaw, this arrangement serving as a lock to retain the member 5 in its displaced position. The member 3 as described is raised vertically by the ramp 5, its upper end raising a valve supplying steam to a whistle, and in another form raising two valves, one controlling an alarm and the other the brakes. Member 3 is retained raised by a pawl engaging ratchet teeth.
Patent GB-106547-A (GB)
IPC: C03B5/08
Abstract: 106,547. Gray, J. June 26, 1916. Drawings to Specification. Crucibles, particularly for use in glass manufacture, are made up of rods, bars, or elabs of tungsten, held together by detachable bands, the edges of the slabs being united by means of tungsten powder nickel, or copper fused on by an arc in hydrogen. Specification 6952/93 is referred to.
Patent GB-106626-A (GB)
IPC: H05B3/00
Abstract: 106,626. Watson & Co., T. H., Greaves, H. A., and Etchells, H. March 1, 1916. Electrode furnaces. -Relates to methods of supplying current from three-phase or two-phase mains to a furnace having a hearth electrode and two upper electrodes or groups, so as to impose equal loads on the phases. In the three-phase system, three transformer primary windings are mesh - connected, while the secondaries are star-connected. The transformer secondary connected to the hearth electrode gives a smaller electric pressure than those feeding the upper electrodes or groups, and may be regulated by means of an auto-transformer or primary tappings to give exact equality of loading in accordance with the resistance of the hearth. In the two-phase system, a transformer is arranged in each phase, and one secondary D is connected at one end to the mid-point of the other secondary A B, which is designed to give a pressure twice as great as the secondary D, unless resistance is interposed between the hearth electrode and the bath, in which case the ratio may be less than 2, though always greater than unity. The upper electrodes or groups a, b are connected to the divided secondary A B and the hearth electrode c to the other secondary D.
Patent GB-106930-A (GB)
IPC: A47B23/04
Abstract: 106,930. Humfrey, W. P. Oct. 12, 1916. Invalids' tables &c.-The upright of an invalids' table or desk is clamped to a bedstead rail and pressed against the floor by a cam or eccentric, and the top can be adjusted at an inclination to the upright to which it is secured by tongued and grooved members and a clamping-bolt. The cam or eccentric 2 preferably has a bevelled edge to engage the underside of the bedstead rail 6, and its spindle 3 can be arranged in any one of a series of holes 4 in the upright 1. When applied to wooden rails, a flange of slightly helical form may be provided on the cam to engage the rear of the rail. The inclination of the top may be adjusted by a semicylindrical tongued member 12 and a cylindrical grooved member 11 clamped together by an eye-bolt 16 mounted on the central pin 15. The table top preferably comprises two flaps 13, 19 hinged together, means such as a slotted stay and a clamping-nut being provided to retain the upper flap 19 at any desired angle to the lower flap 13. The foot of the upright 1 is preferably resilient and may comprise thin metal side plates 7 to which are attached india-rubber blocks or rollers to rest on the floor.
Patent GB-708994-A (GB)
Title: Improvements in or relating to machines for applying closures to containers
Inventor: EVANS ARTHUR JAMES PERCIVAL
IPC: B67B3/20
Filed: 1952-04-28
Abstract: 708,994. Closuring containers. METAL BOX CO., Ltd. March 9, 1953 [April 28, 1952], No. 10709/52. Class 125 (2) In apparatus for applying screw closures to containers of the kind described in Specification 450,093 in which a closure is held in a chuck 16 which is lowered and turned angularly to apply th closure to the container a sleeve 7 is supportec by the chuck, can move relatively thereto and is formed with an in wardly-extending pro jection to hold the closure in axial alignment with the chuck until it is grippec thereby. As shown ir Fig. 1, the sleeve 7 is suspended by pegs 8 working in slots 9 in the chuck and is urged downwardly by a spring 10. As the head descends, an annular projection 14 on the sleeve engages a bead 15 on the closure 6 to centralize it and, on further descent of the chuck, the sleeve remains stationary to compress the spring 10 until the closure enters the chuck. The chuck may hold the closure by suction, magnetic attraction or spring-loaded plungers. An ejector 17 is provided for the closure. In a modification, Fig. 2 (not shown), for closures not provided with a bead, spaced projections are provided on the inner wall of the sleeve to engage the top of the closure, the projections working in slots in the chuck.
Patent GB-766893-A (GB)
Title: Improvements in or relating to electrical busbar trunking
IPC: H02G5/08
Filed: 1954-04-12
Abstract: 766,893. Conduits. GENERAL ELECTRIC CO., Ltd., and MARTIN, J. T. April 6, 1955 [April 12, 1954], No. 10712/54. Class 36. A bare conductor 2 which is insulatingly supported in trunking 1 has its position at a tap-off point 4 defined by a pair of spaced members 5, 6 arranged one on each side of the point 4 and one on one side and one on the other side of the conductor, each member 5, 6 being grooved to locate the conductor. A number of conductors, which may be in the form of flat strips, may be arranged side-by-side in the trunking, the members 5, 6 being arranged transversely of the conductors and having a separate groove for each conductor.
Patent GB-848315-A (GB)
Title: A walk-type tractor
IPC: A01D34/08
Filed: 1959-03-26
Abstract: 848,315. Operating clutches; change-speed gear. ANCIENS ETABLISSEMENTS CLEMENT-BAYARD S.A., DES. March 26, 1959 [March 27, 1958], No. 10724/59. Addition to 771,406. Class 80 (2). [Also in Group XXXI] The number of forward and reverse speeds of the walk-type tractor described by the parent Specification is increased by providing an intermediate device between the power input and output shafts of the change-speed device. The device consists of two gear-wheels 191, 192 slidably splined on the shaft 15 and which may be displaced selectively to mesh with gear-wheels 201, 202, respectively, on the shaft 21, displacement being effected by forks 193, 194 mounted on rods 195, 196 having notches 195a, 196a for selective engagement by a plate 198 on a handle 197. To provide space for the device, the cams for operating the wheel clutches are mounted on coaxial shafts 48d instead of on spaced parallel shafts.
Patent GB-405486-A (GB)
Title: Indicating plaque for road surfaces
IPC: E01F9/06
Filed: 1933-04-11
Abstract: 405,486. Road - surface markings. TARALON, T. V., 21, Route de Sees, and LASSEUR, G. A., 43, Rue du Jeudi, both in Alencon, Orne, France. April 11, 1933, No. 10790. Convention date, May 4, 1932. [Class 3 (ii).] A road-marking plaque, of the kind having no stem, has a toothed periphery and is secured to the road surface and to the road carpet, when present, by a bonding medium adapted to soften at high temperatures. In the form shown in Fig. 1, the plaque 4, of metal or other strong material, is let into a recess in the carpet 2 and is secured therein and to the road surface 1 by a bituminous bonding medium 5. In applying the plaques to the road, the face thereof and the base of a recess in the carpet layer are first coated with the bonding medium of tar or bitumen of high melting point and the plaque is then set in the recess. Finally the teeth are connected to the road surface by filling the cavities between the teeth with the same bonding medium. In the modification shown in Figs. 2a and 3, the carpet 2, which is comparatively thin, is thickened locally with the bonding medium at 6 to receive the plaque, which is provided beneath with concentric grooves 9 and radial abutment ribs 10.
Patent GB-108012-A (GB)
IPC: E01B3/22
Abstract: 108,012. Fabre, F. July 17, 1916. Sleepers and parts, arrangement of.-A railroad track is stabilized by means of plates or stays 4, preferably metal, secured by brackets or otherwise to the lower surface of the sleepers 2 and other alternating plates 3 to the upper surface of the sleepers. Secondary stays may be employed below the upper stay-plates, and the ballast may be packed as desired. Metal cover-plates to protect from rain may be used.
Patent GB-294285-A (GB)
Title: Improvements in or relating to electro-acoustic devices
IPC: H04R9/04
Filed: 1927-04-22
Abstract: 294,285. Round, H. J., and Rust, N. M. April 22, 1927. Magnetic instruments; diaphragms.-A conical or similarly shaped diaphragm 1 is driven by a coil 3 located in the annular air gap of a magnet 5, 6 and is supported by spiders 8, 9 of flexible material such as paper mounted on a shaft 7 which may be screwed or otherwise fixed to the polepiece 5.
Patent GB-440769-A (GB)
Title: Clipping device for napkins and similar objects
IPC: A47K10/14
Filed: 1935-04-08
Abstract: 440,769. Brackets; clips and clamps. SOC. GRIPPS, 27, Rue de Grenelle, Paris. April 8, 1935, No. 10871. Convention date, Aug. 16, 1934. [Class 44] [See also Group XIV] A device for holding napkins and like articles comprises a disc 6 of rubber or other resilient material having slots meeting at a common point and through which the napkin X is inserted, the disc being mounted in a removable and non-rigid manner. Figs. 3 and 5 show a channel-sectioned frame or mounting ring 13. The ring may be suitably embodied in a cupboard or other structure. Figs. 7, 9, 10, show a fitting 1 with holes 3 for attachment screws &c., the fitting having a rebated aperture 4 with slots 17, the disc being retained by a ring 18 with tongues 19 which are passed through the slots 17 and clinched. In both forms clearance is left round the periphery of the disc to permit radial expansion.
Patent GB-802483-A (GB)
Title: Improvements in or relating to method of dip brazing aluminous metal
IPC: B23K35/36
Filed: 1955-04-15
Abstract: A molten salt bath for brazing comprises 2-70 per cent total of at least one of the following salts: beryllium chloride, magnesium chloride, calcium chloride, strontium chloride and barium chloride, and 30-80 per cent total of at least one of the salts, potassium chloride and sodium chloride, the total of all the said chlorides constituting the major portion, preferably at least 90 per cent, of the bath, and the bath is activated by at least periodically passing a direct current therethrough to liberate nascent chlorine.  Calcium chloride preferably forms 20-40 per cent, strontium chloride preferably forms 2-15 per cent, and beryllium, magnesium or barium chloride preferably form 10-30 per cent total, with the total of these chlorides being preferably 20-70 per cent.  The total of the salts potassium and sodium chloride is preferably 50-80 per cent. Lithium chloride up to 25 per cent, preferably 0.2-2 per cent, may be included as may 0.5-10, preferably 2-5, per cent of at least one of beryllium fluoride, magnesium fluoride, aluminium fluoride and the double fluorides of aluminium and alkali metal or alkali metal fluoride and aluminium fluoride in the proportions necessary to form the double fluoride.  Examples of the baths has the following percentage compositions: (a) 35 NaCl, 65 CaCl2; (b) 15 NaCl, 41 KCl, 30 CaCl2, 6 SrCl2, 8 Na3AlF6; (c) 0.5 LiCl, 22 NaCl, 46 KCl, 29 CaCl2, 2.5 Na3AlF6.  The bath may be treated with gaseous hydrohalide, viz. hydrogen fluoride and/or chloride, before or at the same time as the application of current.  The hydrohalide may be bubbled through the bath, possibly diluted with helium, argon or nitrogen or may be added as a decomposable halide, e.g. ammonium chloride.  Specifications 539,337 [Group XXII], 744,862, and U.S.A. Specification 2,602,413 are referred to.
Patent GB-811459-A (GB)
Title: Improvements in and relating to the silencing of the exhaust of internal combustion engines
Inventor: RUTHERFORD JOHN NORMAN
IPC: F01N1/06
Filed: 1956-04-11
Abstract: 811,459. Exhaust-silencers. SPANNER BOILERS Ltd. July 11, 1957 [April 11, 1956], No. 10987/56. Class 7(2) I.C. engine exhaust is divided, preferably equally, between the interior of a helicoidally grooved tube d and the space between it and a smooth-walled tube c supporting it through upper and lower spacers f. All the connections between the spacers f and the tubes c, d are welded except one set of connections, between the upper and lower spacers and one or other of the tubes, which are frictional to allow relative tube expansion. A plurality of the tubes c are expanded and perhaps welded into plates a, b of headers, the upper of which discharges upwards to atmosphere and the lower of which is supplied vertically or, according to the Provisional Specification, from one side by an exhaust pipe. The tubes c, d may be inclined and the headers annular.
Patent GB-274960-A (GB)
Title: Improvements relating to the production of hydroxylic compounds
IPC: C07C45/64
Filed: 1926-04-28
Abstract: 274,960. Crawford, J. W. C., and Willson, F. G. April 28, 1926. Hydroxylic compounds are produced by treating primary amines with nitrous acid or a nitrite, and decomposing the resulting product in the presence of an inert solvent for the hydroxylic compound substantially not miscible with the aqueous solution, so that the hydroxylic compound is removed from the aqueous solution immediately following its formation. Extraction of the hydroxylic compound is facilitated by agitation, and the reaction may be assisted by the addition of a metal salt such as copper sulphate as a catalyst. If desired the extraction may be made under pressure so that a higher temperature may be used. Examples are given of the production of (1) phenol from aniline, the solution obtained by treating the aniline with nitrous acid in the usual manner being added to a boiling mixture of xylene and water under reflux; the mixture is cooled and the xylene layer separated, and the aqueous liquid is extracted with ether, phenol being recovered from both the xylene and the ether; anisol mixed with dilute sulphuric acid may be used instead of xylene ; (2) p-cresol from ptoluidine by adding the solution resulting from the treatment of p-toluidine with nitrous acid to a boiling mixture of xylene and dilute sulphuric acid; (3) p-chlorphenol from p-chloroaniline in the same way; (4) m-hydroxybenzaldehyde from maminobenzaldehyde by adding the diazotized solution to a boiling well agitated mixture of chlorbenzene and water; (5) 1-hydroxy-2 : 4- dimethylbenzene from 1-amino-2 : 4-dimethylbenzene, using boiling xylene mixed with water for extracting; (6) salicylic acid from anthranilic acid using boiling xylene mixed with dilute sulphurc acid for extracting.
Patent GB-916031-A (GB)
Title: Improvements in or relating to polish applicators
Inventor: PERCIVAL WILLIAM
IPC: A47L13/22
Filed: 1958-04-09
Abstract: 916,031. Polish applicators. GODDARD & SONS Ltd., J. April 9, 1959 [April 9, 1958], No. 11230/58. Class 19. Liquid polish in an inverted container C screwed into the back of the applicator is urged by air pressure within the container down through an opening 18 in the stock of the applicator into a compressible porous pad 20 for application directly or indirectly to the surface to be cleaned. Pressure in the container is created by compressing the pad into the stock of the applicator to cause air to be urged up through bores 19 in the stock into the container.
Patent GB-1294182-A (GB)
Title: Spherical lens structures and process for producing the same
IPC: A61B1/00
Filed: 1970-03-10
Abstract: 1294182 Modifying spherical glass lens NIPPON SELFOC KK 10 March 1970 [17 March 1969] 11317/70 Heading C1M [Also in Division G2]  A spherical glass lens has at least two species of cations constituting modifying oxides whose concentrations vary from the centre to the surface of the lens to produce a distribution of refractive index given by the equation.  where n=the refractive index at a distance r from the centre of the lens, n 0 =the refractive index at the centre, a=a constant, and r/a<1. A method of making the lens comprises immersing a sphere 5 made of glass containing a cation which produces a high refractive index, such as Pb or T1 ions in a molten salt containing at least one cation which produces a lower refractive index, such as a nitrate or sulphate of K, Na and/or Li, with or without the addition of T1 nitrate, whereby the Pb or T1 ions are substituted by the cations by diffusion through the glass. To make diffusion uniform the sphere 5 is suspended and agitated by air bubbles coming through holes 9 in a compressed air line 8. The surface of the sphere is then removed by etching or by grinding and polishing to produce the required lens, which has a 180 degree field of vision. The lens may be used in conjunction with optical fibres (4), Fig. 2 (not shown), arranged to contact the outer surface of the lens to produce a remote image. A specific example is given.