baber/WOPTO huggingface dataset:
Patent GB-217143-A (GB)
Title: Improvements in, or relating to, means for collecting and discharging solid matter when pumping liquids containing same
IPC: B01D33/15
Filed: 1922-12-11
Abstract: 217,143. Gwynne, N. G., and Breeze, J. F. Dec. 11, 1922. Rotary strainers.-A grid or strainer for use in means for collecting and discharging solid matter when pumping liquids containing the same is composed of a plurality of movable elements adapted to break up or free fibrous or similar material adhering thereto. A central member e, rotating on a shaft d in a casing a, has radial blades l and lateral cages or spiders h, i, grooved to receive rings k, which fit loosely in the grooves. Liquid enters the casing through an inlet m, the solid matter is retained in the pockets formed between the blades, and the liquid passes laterally through the grids formed by the rings and away to the pump. The liquid returned from the pump is delivered behind the grids at the upper part of the casing and entering therethrough carries the solid matter from the corresponding pockets away through an outlet n. Grooves for the rings k may, alternatively, be formed on the edges of the blades l.
Patent GB-427295-A (GB)
Title: Improvements in gear cases for cycles
IPC: B62J13/04
Filed: 1934-11-24
Abstract: 427,295. Cycle gear-cases. SPEEDWELL GEAR CASE CO., Ltd., 276, Broad Street, and BEESLEY, W. H., 4, Broadway, Warley, both in Birmingham. Nov. 24, 1934, No. 33830. [Class 136 (i)] In a gear-case for cycles, of the type having an inclined elongated opening 2 in one side to permit of chain adjustment by means of an inclined forwardly - opening slot in each fork end, and a movable part 16 (e.g. pivoted at 13) arranged beneath the opening 2 to permit removal of the wheel and hub, the gap between the circular hub and one end of the elongated opening 2 is normally closed by a cover 7 pivoted to the gear case 1 by means of a head on one member adapted to be passed under a bridge or loop on the other member and then deformed to maintain the pivotal engagement. The cover 7 is provided with a hook-like head 10 adapted to be passed through a bridge or loop 6 slit and pressed up out of the metal of the case 1, a lug 11 being then bent laterally. to hold the parts in pivotal engagement. The cover 7 is stiffened by a peripheral rib 9, and is retained in the closed position by the frictional engagement of the end of the rib 9 in an angular bracket 12.
Patent GB-950769-A (GB)
Title: Process for polymerising vinyl chloride
IPC: C08F214/06
Filed: 1961-09-21
Abstract: Vinyl chloride is polymerized by means of a catalyst comprising an organo aluminium compound and one or more boric acid esters in the presence of one or more unsaturated polymerizable compounds. Preferably the polymerization is effected in the presence of an oxidizing agent, e.g. sulphur, nitrogen dioxide, nitrogen tetroxide, bromine or iodine.  Specified unsaturated compounds are vinyl acetate, vinyl stearate, ethylene, propylene, diethyl maleate, vinylidene chloride, allyl chloride, dichlorethylene, trichlorethylene and acrylonitrile.  Polymerization may be effected in the presence of a liquid medium, e.g. tetrahydrofuran or petroleum ether.  Examples describe the polymerization of vinyl chloride in the presence of trimethyl borate and (1) triethyl aluminium, bromine and vinyl acetate; (2) triethyl aluminium, bromine, vinyl acetate and trichlorethylene; (3) tributyl aluminium, iodine and ethylene; (4) triethyl aluminium, nitrogen tetroxide and diethyl maleate; (5) triethyl aluminium, diethyl maleate and 1,2-dichlorethylene or allyl chloride; (6) triethyl aluminium and acrylonitrile; and (7) triethyl aluminium, sulphur and vinylidene chloride. The products may be washed with methanol and hydrochloric acid.
Patent GB-1042537-A (GB)
Title: Improvements in nozzle connections for pressure vessels
IPC: F22B37/10
Filed: 1964-08-19
Abstract: 1,042,537. Pipe coupling. R. HILTSCHER. Aug. 19, 1964 [Aug. 21, 1963], No. 33934/64. Heading F2G. A nozzle for attachment of a pipe to a non- spherical, preferably cylindrical, pressure vessel is characterized in that the nozzle orifice located at the internal surface of the pressure vessel is oblong, preferably elliptical, and that the ratio of the minor and major axes or corresponding axes for non-elliptical orifices is at least 1: 2. For a cylindrical pressure vessel the major axis is situated circumferentially and the minor axis axially of the pressure vessel. The nozzle need not be integral with the wall of the pressure vessel but may be secured by welding to a, preferably circular, opening in the pressure vessel. Fig. 3 shows such a nozzle, the welding occurring at 6 and shows various nozzle shapes. The generatrix shown at 5 has an inflexion, the shape shown at 4 reduces the maximum stresses in the material is lower.
Patent GB-339388-A (GB)
Abstract: 339,388. Wigley, F. S., and Austing, L. F. Sept. 24, 1929. Body harness.-Parachute harness of the type in which two V-shaped loops are provided to serve as a seat, is arranged so that the legs of the aviators are in both loops, and the strap of one loop passes upwardly in front, and the strap of the other loop passes upwardly and behind, the wearer. A quick release device is provided to enable the aviator to escape quickly and for the harness to be donned readily. As shown, the harness comprises V-shaped straps 1, 2 serving as a seat, the former strap passing behind and the latter in front of the wearer, corresponding cross straps 6, 13 maintaining the straps in position. The front straps 2 are interrupted by a quick release device 7 comprising a housing 22 carrying four spring loaded plungers 23 having inclined surfaces over which strap attachments 24 can be snapped in one direction. Release of the straps is obtained by depressing a press button 26 acting on a plate 31 which latter engages flanges on the plungers. Accidental depression of the press button is prevented by a spring loaded detent working in an L-shaped groove which only frees it after it has been turned.
Patent GB-177836-A (GB)
Title: Improvements in and relating to hats
IPC: A42B1/22
Filed: 1920-12-01
Abstract: 177,836. Moses, H. L., and Levy & Sons, Inc., M. S. Dec. 1, 1920. Leathers or sweat bands; ventilating. - In a hat of the type in which the sweat band is spaced from the interior wall, a flexible band 10 of resi. lient material, such as elastic webbing, is held in a floating position between the interior wall 8 of the hat and the sweat band 17, but indepen. dently of the sweat band, by connecting means extending around the whole periphery of the hat. As shown, the connecting means comprise threads or stitches 9 extending radially from the wall of the hat and attached to the centre of the flexible band.
Patent GB-1249256-A (GB)
Title: Improvements relating to printing
Inventor: PAIGE WALTER GRIFFIN
IPC: B41J2/285
Filed: 1969-07-05
Abstract: 1,249,256. Selective printing; ink ribbon mechanism. BURROUGHS CORP. 5 July, 1969, No. 34001/69. Heading B6F. A mosaic printer comprises a print head 14 including plurality of converging styli such as 29, Fig. 2, the ends 18 of which are in a straight line while the styli themselves lie on a surface which is as near conical as is practicable. The styli are selectively longitudinally displaceable for impression by respective electromagnets each comprising a moving coil 37 coaxial with a stationary pole piece 38 connected into a magnetic circuit through ferromagnetic members 21, 22 and an annular permanent magnet 20. The print head 14 is arranged to print on paper tape fed from a reel 10, Fig. 1, by gripper rollers 12, 13, the roller 13 being continuously rotated and the roller 12 being selectively engageable with the paper tape. Printing is effected against a platen 4 by means of an ink ribbon fed from a spool 2 round the platen 4 and on to a spool 8 by similar gripper rollers 5, 6. The take-up spool 8 is driven through a slip clutch or belt to take up slack. The arrangement of the ink ribbon guide rollers permits printed impressions to be seen immediately after their formation.
Patent GB-1078165-A (GB)
Title: Improvements in or relating to method for producing anodic films on beryllium
Inventor: PITTMAN RICHARD DUNCAN
IPC: C25D21/16
Filed: 1965-08-09
Abstract: Beryllium is anodized in an aqueous solution containing borate and free hydroxyl ions, typically sodium borate and sodium hydroxide produced by adding excess sodium hydroxide to a boric acid solution. The anodic coating, which may be 0.1 to 0.3 mil thick, comprises a beryllium oxide-boron composition.  As described the anodizing bath contains per litre 177 g sodium borate and 30 g sodium hydroxide and is used at 100 to 120 DEG F. with an applied potential of 6v. Various colours of coating from light grey to dark brown and containing blue, violet or olive tints may be obtained. Cleaning or other surface preparation treatment may be employed before anodizing.
Patent GB-871540-A (GB)
Title: Combined templet and frame unit for eye shield front
IPC: G02C7/16
Filed: 1959-10-08
Abstract: 871,540. Frames for goggles. PARMELEE PLASTICS CO. Oct. 8, 1959 [Nov. 10, 1958], No. 34111/59. Class 97(1) A frame for holding a transparent eye shield comprises a main frame with a pair of templets integral therewith and biased towards their folded positions; the main frame and the templets being formed of a tough, flexible and resilient material so that the templets may be moved to an open, head receiving position. In the embodiment shown the main frame 12 and templets 16 are made of nylon and are molded in one piece with the templets in their folded position. The eye shield 13 is inserted in a channel 22 in the main frame and held there by projections 30 in the frame which engage notches 32 in the shield. The shield is provided with a nose pad 20. V-shaped (semi-circular, &c.) notches 33 are provided at the templet-main frame joints, the depth of these notches being greater than the depth of the remaining parts of the frame at these points. Further, these remaining parts may be crushed to make them even more flexible. The width of the frame at these points is increased at 26 to strengthen the joints. A longitudinal rod extending along the frame may be provided to strengthen said frame.
Patent GB-603277-A (GB)
Title: Improvement in sound recording and reproducing control system
IPC: H03G3/00
Filed: 1945-12-17
Abstract: 603,277. Automatic volume control. DICTAPHONE CORPORATION. Dec. 17, 1945, No. 34141. Convention date, Dec. 29, 1944. [Class 40 (iv)] [Also in Group XL (c)] An A.V.C. voltage which is fast acting and consequently contains a distorting A.C. component is fed to two valves one of which also receives the signal voltage, and the respective outputs are then fed to two further valves connected together in a cathodefollower phase inverter circuit so that the resulting output, being the difference between the inputs to the two valves, is substantially distortionless. The invention is shewn applied to a recording and reproducing apparatus. Signals from source 100 are amplified by triode V, and again by pentode V 4  and rectified by the doublediode V 5  to provide A.V.C. bias voltage across condenser C 14  which in combination with resistances R 22 , R 23  has a low time constant so that audible (distortion) frequencies especially in the lower range are not entirely suppressed. A portion of the A.V.C. voltage is fed back to V 4  to enable it to handle a wide amplitude range. The A.V.C. voltage is also fed to the two pentodes V 2 , V 3  the former of which also receives from V 1  the input signal and their outputs are fed respectively to triodes V 6 , V 7  which have a common cathode resistor R 17  whereby the A.V.C. distortion voltages applied to V, are introduced in antiphase to the distortion voltages applied to V 6  so that the output to load resistance R 19  is substantially distortionless. The volume control potentiometer R 37  feeds this output to beam tetrode V 8  whose output feeds the recording element 130. For playing back the relay K is operated and currents picked up by the reproducing element 132 are fed in succession to valves V 3 , V 7 , volume control R 36'  valve V 8  and the loudspeaker 118. The control lever 136 by which either the recording or reproducing element can be put in the operative position also controls the operation of relay K, short circuiting either coil K or resistance R 42  in the H.T. circuit. The lever also has a neutral position in which K and R 42  are in series thereby reducing the H.T. supplied to the valves when the apparatus is not in use.
Patent GB-745328-A (GB)
Title: Improvements in or relating to the conveyance of a flat strip product in coil form
IPC: B65G13/00
Filed: 1953-12-11
Abstract: 745,328. Roller conveyers. SUMMERS & SONS, Ltd., J., and WILLOTT, R. L. Feb. 7, 1955 [Dec. 11, 1953], No. 34496/53. Class 78 (1). A conveyer for heavy cylindrical objects comprises a series of dished rolls 2, 3 of which alternate rolls 3 are idlers and the remainder 2 are driven one from another by gearing which includes gears 8 fast on the shafts of the driven rolls and idler gears 9 freely mounted on the shafts of the idler rolls. The conveyer is composed of a number of sections each provided with separate driving means and each comprising a number of rolls. A driven roll 1 near the middle of each section is connected through flanges 4, 5 and a gear-box 6 with an electric or hydraulic motor 7. The rolls are journalled in roller bearings 10 mounted in side housings 11, 12, each of which is formed in two parts 15, 16 and 17, 18. The lower parts have projections 21, 22 on their undersides which take into corresponding recesses 19, 20 in the base-plate 13. The upper sections of the housings have inclined faces 28 which follow approximately the dished contour of the rolls.
Patent GB-1105107-A (GB)
Title: Hydraulically operated apparatus for the mechanical splitting of rocks by means of inserts which are pushed apart by a wedge
IPC: E21C37/04
Filed: 1966-08-02
Abstract: 1,105,107. Splitting stone. H. DARDA. 2 Aug., 1966 [11 Aug., 1965]. No. 34666/66. Heading B5E. An apparatus for the mechanical splitting of rock comprises a cylinder block 1 having an hydraulically - actuated piston 8 connected to a wedge 21 which is adapted to slide between a pair of inserts 17, 18 after the latter have been inserted into a hole drilled in the rock. The inserts are suspended from a member 2 screwed into the cylinder 1 by means of pins 15, 16 urged towards the wedge by springs 14. The outer surfaces of the inserts may be semicircular or triangular and the crosssection through the wedge may be rectangular or triangular; three equispaced inserts may be used. In a modification (Fig. 6), the inserts (47) are suspended by means of semicircular flanges 46 engaging a hardened ring (45).
Patent GB-1280527-A (GB)
Title: Ball-and-socket joint
IPC: F16C11/06
Filed: 1969-07-10
Abstract: 1280527 Ball and socket joint ELASTOGRAN GmbH 10 July 1969 [10 July 1968 26 June 1969] 34769/69 Heading E2F In a ball-and-socket joint a ball is received in a cavity in a bearing of resilient material, the bearing being closely fitted in a tapering bore of the socket and having a plurality of resilient projections against each of which a cover closing a bore mouth is pressed to force the bearing into the bore. Each projection is capable of being deformed in two mutually perpendicular directions each perpendicular to the direction of the force applied by the cover. The tapered bearing portion is shorter than the tapered bore. The joint shown, Fig. 1, comprises a ball pin 2 received in bearing 3 fitted in bore 1' of socket 1. Cover 5 is pressed against projections 3'. The projections, Fig. 2, may comprise ribs 7 disposed on a circle. The ribs may be cylindrical.
Patent GB-283174-A (GB)
Title: Process and apparatus for pressing articles of fused silica and novel products resulting therefrom
IPC: C03B9/193
Filed: 1927-12-23
Abstract: 283,174. Quartz et Silice. Jan. 6, 1927 [Convention date]. Forming silica glass articles ; pressing. - A method of producing pressed articles from fused silica consists in heating a silica blank up to a temperature at which the material volatilises freely, and then transferring the blank quickly to the press. The apparatus comprises a furnace A, an hydraulic press B, and a cooling or anneal. ing furnace C. The furnace A consists of a crucible a, which may be made of zirconium or graphite, contained in a casing c which is filled with heat-insulating material d, the whole, being revolvable on an axis e by means of a handle f. The crucible is inductively heated by highfrequency currents passing through a winding b on the outside of the casing and it is fitted with a stopper g having a peep hole h. The press is preferably operated by hydraulic pressure generated by a pump k operated by a motor l. Two moulds or dies m are used and they are operated by opposed cylinders i. The moulds are preferably made of nickel, although carbon or iron-chromium alloys can be used, and they are heated by a gas, ring q or by suitable electric heating means. The furnace C, into which the articles are placed after pressing, is heated up to a temperature of 1200‹ C. by gas burners s. In use, a silica blank is placed in the crucible a and is heated to a temperature of 2200‹ C. at which it volatilizes. The crucible is rotated in order to prevent the blank from sticking to the crucible, and this is also prevented by the free volatilization of the silica in contact with the hot walls of the crucible. The rotation also shapes the softened silica blank. The hot blank is transferred to the press and is shaped by pressure between the heated moulds. The shaped article is then transferred to the furnace C where it is reheated and then allowed to cool slowly. Articles may also be shaped by pressing and blowing. In this case, the silica blank is pressed into a mould t, Fig. 3, by a plunger v which grips a part of the blank against an apertured plate u placed on the mould. The pressed blank, or parison, thus formed is blown to shape by compressed air supplied through passages v<1>, v<2> in the plunger.
Patent GB-627488-A (GB)
Title: Improvements in or relating to ultra-high frequency antenna systems
IPC: H01Q19/13
Filed: 1945-12-27
Abstract: 627,488. Electric resonators. PHILCO RADIO & TELEVISION CORPORATION. Dec. 27, 1945, No. 34931. Convention date, Aug. 26, 1944. [Class 40 (viii)] [Also in Group XL (c)] In an ultra-high frequency directive system comprising an aerial system mounted in front of a reflector 11, the aerial system comprises dipoles 21, 22 insulatedly mounted in a cavity resonator 15 so that interference by the dipolesupporting means with the radiation from the dipoles to the reflector is reduced. As shown, a cylindrical resonator one wavelength long is energized in the JM01 mode by means of a rectangular wave-guide 13 projecting through the reflector which is energized in the TE01 mode and coupled to a hole in the resonator in such a manner as to ensure proper matching. Annular metal discs with a central aperture of #/2 diameter are fitted to the ends of the resonator and the #/2 dipoles are supported at their mid-points by insulating discs filling the apertures, Figs. 3 and 4 (not shown), so that the inwardly projecting #/4 lengths of the dipoles are axially disposed in the resonator in positions of maximum field strength, a slight adjustment of the dipole lengths being made to secure impedance matching ; alternatively the insulating discs are omitted and each dipole is supported by a #/4 conductive arm which forms a short-circuited #/4 line and thereby insulates the dipole from the disc, Figs. 5 and 6 (not shown). In order to reflect radiation from the dipoles towards the reflector, #/4 parasitic reflectors 31 and 32 are mounted on the metallic discs or alternatively the parasitic reflectors are replaced by corner reflectors. The main reflector may be of parabolic or other suitable shape and the wave-guide 13 may be centrally located as shown or mounted at any angle to the reflector.
Patent GB-191376-A (GB)
Title: Improvements in or relating to surface condensers
IPC: F28B9/08
Filed: 1922-12-22
Abstract: 191,376. Akt.-Ges. der Maschinenfabriken Escher, Wyss, et Cie. Jan. 5,1922, [Convention date]. Drip-interception devices. -The water of condensation collecting on and dripping from the cooling pipes of a steam condenser is intercepted and led away by closed-ended pipes which replace some of the cooling pipes and which are formed with slits along their top surfaces and with discharge openings in their bottom surfaces. The discharge openings are formed opposite parts of top tube surfaces which are not slit. Every third pipe in each vertical row of cooling pipes 1 is replaced by a drip-intercepting pipe 2 closed at its ends by plugs 3 and formed with a slit 8 in its upper half extending nearly the whole length of the pipe and with bottom discharge openings 7 at its ends. In modifications, the discharge openings are formed at the middle of the pipes adjacent to a tube supporting-plate and they may open into the space between two tube-supporting plates.
Patent GB-838029-A (GB)
Title: Process for the production of hydroperoxides
Inventor: WHITFIELD GORDON HOWARD
IPC: C07C409/08
Filed: 1956-11-16
Abstract: A process for the production of aromatic hydroperoxides comprises oxidizing at a temperature of 50 DEG  to 150 DEG  C. a hydrocarbon of aromatic character substituted by at least one CH3, CH2R1 or CHR1R11, R1 and R11 being alkyl, alicyclic or aryl groups unsubstituted or substituted by alkyl groups in the liquid phase by means of molecular oxygen or ozone in the presence of not more than 5% by weight of free hydrobromic acid and in the presence of an alkaline stabilizer, the hydrobromic acid being calculated on the weight of the reaction mixture.  The alkaline stabilizer is a salt of an alkali or alkaline earth metal and an acid, especially an organic acid, the first dissociation constant of which is not greater than 10-2.  Examples of such stabilizers mentioned are acetates, propionates, benzoates, toluates, phosphates other than the dihydrogen phosphates of alkali or alkaline earth metals, e.g. sodium acetate or benzoate, calcium carbonate and barium propionate.  The hydrobromic acid may be introduced as such or by interaction of an aromatic or aliphatic acid and an alkali metal or alkaline earth bromide.  Carboxylic acids may be formed as a by-product during the process.  Starting materials mentioned include di-isopropyl benzene, sec.-butyl and disec.-butyl benzenes, ethyl benzene, cyclohexyl benzene, ethyl benzene, dicyclohexylbenzene and triphenyl methane.  Aids to peroxidation specified include ultra-violet light optionally together with benzoyl peroxide and azo-diisobutyronitrile.  Solvents specified include aliphatic carboxylic acids, preferably containing 2 to 4 carbon atoms, aromatic hydrocarbons, halobenzenes, e.g. o-dichlorobenzene and aromatic carboxylic.  Temperatures of from 50 DEG  to 150 DEG  C. and pressures from atmospheric up to 50 atmospheres may be employed. In an example, cumene is oxidized with air in the presence of benzoic acid and sodium bromide. Comparative tests are carried out in the presence of sodium benzoate, benzoic acid and a mixture of sodium carbonate and stearate.  Specification 578,608 is referred to.
Patent GB-619205-A (GB)
Title: Improvements in or relating to binoculars
IPC: G02B7/06
Filed: 1946-11-27
Abstract: 619,205. Binoculars. KERSHAW & SONS, Ltd., A., KERSHAW, N., and RYDER, H. Nov. 27, 1946, No. 35127. [Class 97 (i)] In binoculars in which the eye-lenses are supported for focusing on a movable bridge 5, each lens 9 is held in the eye-cup 11 by helical springs 12 engaging at one end the surface of the eye-cup and at the other end out-turned flanges 13 of a U-shaped lens cell 14 which presses the lens against its seating. The eyecups 11 are held on the bridge 12 by a pair of clips 16 engaging the cup at 17 and the bridge at 20. Each cell 14 has a rectangular aperture 15 and the springs permit ready release of the eye-lenses.