baber/WOPTO huggingface dataset:
Patent GB-958216-A (GB)
Title: Improvements in or relating to charge storage discharge devices
Inventor: BENNETT ANTHONY WILFRED
IPC: H01J31/26
Filed: 1959-08-26
Abstract: 958,216. Television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 25, 1960 [Aug. 26, 1959], No. 29138/59. Heading H1D. In a television pick-up tube including a photo-emissive cathode 2 receiving the optical image, a photo-emissive change-storage target 4 with stabilizing grid 5 and scanned by a light spot, and an electron collector which may be the first dynode of an electron multiplier 13, the wall electrode between the target 4 and the electron collector consists of a foraminated electrode 14 in order to reduce the reflection of light from the light spot. The target 4 consists of a sheet of partially conducting glass provided on the surface remote from the cathode with a mosaic of photo-emissive elements. The wall electrode may consist of conducting rings and bars, e.g. of platinum paste which is fixed on to the envelope wall, or may consist of a mesh 14, e.g. of " Monel " (Registered Trade Mark), coated with manganese to reduce photo-emission as well as light reflection. The mesh 14 may be surrounded by a non-reflecting insulating or conductive wall coating or by a solid electrode 15 which is positively biased with respect to the mesh to collect any photoelectrons which are released from the mesh. The outside of the envelope may be blackened and/or roughened to prevent the entry of exterior light.
Patent GB-867266-A (GB)
Title: Improvements in or relating to photographic objectives
IPC: G02B13/00
Filed: 1959-08-26
Abstract: 867,266. Photographic objectives. LEITZ (CANADA) Ltd., ERNST. Aug. 26,1959 [Aug, 30. 1958]. No. 29152/59. Class 97(1) A photographic objective comprises, on the object side of the diaphragm, a simple positive lens and a negative meniscus doublet concave towards the diaphragm, and, on the image side of the diaphragm, of a simple positive lens, a negative meniscus doublet concave towards the diaphragm and a further simple positive lens between the diaphragm and the second negative meniscus doublet. This further positive lens is a meniscus concave towards the diaphragm, has a rear radius at least two times as large as the front radius of the second negative meniscus doublet and a focal length greater than the equivalent focal length of the objective. Preferably, the front radius of the negative meniscus doublet to the front of the diaphragm is less than the sum of the distance from said front surface to the front surface of the further simple positive lens and the thickness of this lens. Optical data are given for two examples of such an objective, one example being as shown.
Patent GB-506424-A (GB)
Title: Improvements in duplicating machines
IPC: B41L7/08
Filed: 1937-10-26
Abstract: 506,424. Moistening sheets. FORD, F. R. Oct. 26, 1937, No. 29170. [Class 95] In a duplicating-machine of the kind in which the master sheet is mounted on a cylinder and the copy sheets are -moistened by an absorbent pad, the moistening fluid is fed to the moistening'pad by a feeding pad or member having a movement towards and away from the moistening pad, the amount of fluid delivered, in this way, to the moistening pad during each cycle of operations being under control either by varying the period of contactbetween the feeding and moistening members, or by varying the amount of fluid fed to the feeding member or the force applied to the feeding member. In the machine shown, the master sheet is carried on a cylinder 14, and the copy sheets 16 are moistened by a pad 18 and fed between the pressure roller 15 and the' cylinder 14. An absorbent member 22 is permanently in contact with the moistening pad 18. Within the tank 24, for moistening fluid, are arranged rocking levers 26, mounted on a shaft 25 and carrying an absorbent wicklike feeding member 28. The rocking levers are normally held, by a spring, in raised position. A cam 30 is rotated at a speed proportional to that of the cylinder 14, and oscillates a lever 36 carrying a pin engaging any one of a number of recesses 43 in an actuating member 41. This member 41 is provided with a sector-shaped recess 49, the side 51 of which engages a member 50 on the shaft 25, thus rocking the levers 26 downwardly. The amount of lost motion between the side 51 and the member 50 is adjustable, so that the period, in each cycle, during which the feeding pad 28 is out of contact with the absorbent pad 22, is controllable. In an alternative construction, the rocking levers 26 carry a cup, filled with moistening fluid into which dependent wicks, on the absorbent member 22, are periodically dipped, while, in a further modification, moistening fluid is controllably and periodically thrown on to the absorbent member 22 from a cup actuated by the shaft 25, which is then oscillated against the action of a spring and released with a snap action. Instead of using a stationary pad and a stationary moistening member, a movable absorbent pad or a movable moistening member may be used, or an absorbent roller or absorbent travelling band may be employed as the moistening member. Specifications 384,771 and 483,091 are referred to.
Patent GB-235471-A (GB)
Title: Photographic film washing apparatus
IPC: G03D13/10
Filed: 1924-12-05
Abstract: 235,471. O'Hara, A. G. Dec. 5. 1924. Washing-apparatus for films comprises a hollow body a having means, preferably a branch c formed with a groove for a rubber ring d, for detachably securing it to a water tap or like water supplying means, the film or films i being detachably connected at opposite sides of the body a so as to be supported exterior thereof and water for washing the films being discharged therefrom adjacent to their point of attachment, preferably through apertures o, p or longitudinal slots. In one form, water defecting members q are provided above the upper apertures o, and the film i is attached by forming loops h at its ends which are then passed, through key-hole slots f in the ends b of the body a into longitudinal slots e in which they are secured by passing pins g through the loops h, the heads j of the pins preventing axial movement. A spring retaining device for engaging the ends of the pins g may also be provided. In another form, the pins g and key-hole slots f are dispensed with and the slots e are made of such a width as to prevent the looped ends of the film being readily disengaged, the film being held in position by the ends b of the body, one of the ends being preferably detachable to permit the film being attached.
Patent GB-727409-A (GB)
Title: Improvements relating to open fireplaces with back boilers
Inventor: HETHERINGTON MICHAEL ARNOLD
IPC: F24B1/183
Filed: 1951-12-13
Abstract: 727,409. Open fireplaces. NEWTON, CHAMBERS & CO., Ltd. Dec. 15, 1952 [Dec. 13, 1951], No. 29231/51. Class 126. An open fireplace in which the lower part of the back wall is formed by a boiler, and a boiler flue is provided which leads from the hearth under and up the back of the boiler and a plate above the boiler forms the front of a part of the boiler flue leading from above the boiler to join a chimney and can rock about its lower edge so as simultaneously to vary the cross-sections of the boiler flue and the direct passage for the combustion gases from the fire to the chimney, is characterized. in that the plate is also movable bodily to a position in which it severely restricts all communication between the hearth and the chimney. In the fireplace shown with the lower part of the back wall formed by a boiler 8 heated by a semicylindrical flue 10 passing round the back thereof an upward extension 18 of the flue is formed by the structure shown in Fig. 4. This comprises a back 20, a trough 26 and parallel sector shaped sides 22 formed with lips 24 which fit against the splayed fireplace side walls 25 when the structure is in position. The front wall of extension 18 is formed by a plate 16 adapted to be rocked about its lower edge when the latter is placed in the trough. Lugs 28 on the plate rest on the upper edge of the sectors 22 to retain it frictionally in position. The plate serves also to enclose the fire when necessary and for this purpose a pivoted hob-like extension 38 on the fret 6 is swung into a vertical position to support the plate, with its top edge resting against the top edge of back 20, by engaging a hook 40 provided thereon.
Patent GB-225697-A (GB)
Title: Improvements in floating gun platforms, passenger cabins or the like fitted on boardships
IPC: B63B29/12
Filed: 1923-11-20
Abstract: 225,697. Couty, L. T. Nov. 20, 1923. Self-levelling apparatus; gun platforms.-Sets of self-levelling compartments mounted in sunk platforms on the decks of vessels and serving either as gun platform or as cabins to prevent sea-sickness, are interconnected by a framework of metal bars so that the compartments, when they float off from the vessel in the event of shipwreck, are all maintained in a substantially vertical position. A set of four compartments F with hemispherical ends working in cup-shaped hollows in the deck are interconnected by pairs of links 5, 6 extending from supports 2, 3 carried by the upper part of the compartment. The compartments are further connected by links 4 carried by supports 1 also mounted on the upper part of the compartment.
Patent GB-219859-A (GB)
Title: Improvements in or relating to means for use in making walls and other structures of concrete or the like
IPC: E04G17/075
Filed: 1923-11-21
Abstract: 219,859. Blanchford, H. H. Nov. 21, 1923. Wall-ties.-Walls built in situ between removable shutters have tapered rods b inserted between the courses of shutters, these rods being subsequently left in position to act as tie-rods, especially in the construction of hollow walls.
Patent GB-640187-A (GB)
Title: Method of producing sodium selenate
IPC: C01B19/00
Filed: 1947-11-04
Abstract: 640,187. Electrolytic production of sodium selenate. CANADIAN COPPER REFINERS, Ltd. Nov. 4, 1947, No. 29429. Convention date, Jan. 8. [Class 41] A method of producing sodium selenate electrolytically comprises the steps of preparing an electrolyte consisting of an aqueous solution of sodium selenite having a concentration of approximately 400 grams per litre and containing a minor proportion of at least one addition agent consisting of sodium dichromate in a concentration of approximately 5 grams per litre, sodium orthovanadate in a concentration of approximately 10 grams per litre, and sodium molybdate in a concentration of approximately 25 grams per litre, adjusting the pH value of the solution to a range of approximately 7.1 to 8.0, supplying the solution to a cell having electrodes of metallic material composed predominantly of lead, applying a direct current so as to produce an anode current density of approximately 15 amperes per sq. ft. and a cathode current density of approximately 50 amperes per sq. ft. maintaining the temperature of the solution at approximately 120‹ F., continuing the process until the selenite has been completely converted to selenate, and recovering sodium selenate from the solution after the electrolysis. A cell for use in carrying out the process comprises a case 2 provided with a lining 1 of sheet lead to which is secured at each end of the cell a pair of socket members 4. These members support pipes 5 from which depend sheet metal anodes 6. The cathode 9 is supported by a pipe 10 carried at each end by an insulating member 8. Air at a low pressure may be introduced into the cell through a U-shaped perforated pipe 18, for the purpose of agitating the electrolyte.
Patent GB-953927-A (GB)
Title: Pump with radial cylinders
IPC: F04B1/04
Filed: 1961-08-15
Abstract: 953,927. Reciprocating pumps. RECHERCHES ETUDES PRODUCTION. Aug. 15, 1961 [Sept. 1, 1960], No. 29470/61. Heading F1A. [Also in Division F2] A radial cylinder pump has a delivery chamber 22 having a transverse radial face 23 into which open passages 21 from the cylinders 6; in one embodiment an annular metallic valve member 24 overlies the face and controls flow through the passages 21 by local deformation. The valve member 24 may be pressed axially by a plurality of rubber blocks 31 (Fig. 3) or by springs or be axially resilient. In another embodiment, a hinged valve is provided for each pair of ports, the valve being attached either to the block 1 or cover 2. In a modified pump two radial faces and delivery chambers are provided and the cylinder ports open to one or other of the radial faces, the chambers having separate outlets. The delivery chambers may be concentric or coaxial and more than two may be provided to give multiple outlets. The pump may comprise two adjacent groups of cylinders each group supplying two outlets. Inlet may take place through the drive shaft 7 and passages in the polygonal eccentric member 10 and piston 12. In the embodiment shown each piston has a peripheral port 38 which clears the inner edge of the cylinder to communicate with a chamber 36 fed by a centrifugal pump 37 on the drive shaft.
Patent GB-1267836-A (GB)
Title: Magnetic recording medium
IPC: C09D5/23
Filed: 1969-06-11
Abstract: 1,267,836. Magnetic recording media. FUJI PHOTO FILM CO. Ltd. 11 June, 1969 [11 June, 1968], No. 29574/69. Heading H1H. In a magnetic recording medium comprising a support bearing a coating of ferromagnetic powder dispersed in a binder, the ferromagnetic powder comprises a mixture, in the weight ratio of 9 : 1 to 3 : 7, of (1) ferromagnetic iron oxide and/or ferromagnetic chromium dioxide with or without addition of a further metal, and (2) a ferromagnetic material or mixture having a maximum magnetic induction (B m ) of at least 10,000 Gauss. Specified materials (1) are: γ-Fe 2 O 3  or Fe 3 O 4  with or without Co, Ni or Zn, and CrO 2  containing Te, Sb, Fe or Pt. Specified materials (2) are: Fe and alloys of Fe-Co, Fe-Co-Ni, Fe-Ni or Co-Ni, optionally containing Cu, Mn, Cr or Zn. The coercive forces of the components of the mixture may be equalized by adding Co, Te, Mn, Cr, Cu or Be to one or other of the materials. In examples, polyethylene terephthalate films are coated with (1) γ-Fe 2 O 3  and Fe-Co-Ni alloy in polyvinyl acetate; (2) γ-Fe 2 O 3  and Fe-Co-Ni in cellulose nitrate; (3) CrO 2  and Fe-Co-Ni in polyvinyl acetate; (4) CrO 2  and Fe-Co in cellulose nitrate; (5) Fe 3 O 4  and an alloy in polyvinyl acetate.
Patent GB-937419-A (GB)
Title: Improvements relating to the wet grinding of mineral materials
Inventor: CLEEMAN JORGEN OLAV
IPC: B02C17/00
Filed: 1960-08-29
Abstract: A process for wet-grinding a slurry of mineral material in a mill as part of a tumbling load that includes pebbles as grinding bodies or as an autogenous tumbling load, consists in arranging for the slurry to have a volume of 40% to 80% of the spaces between the individual grinding bodies and the yield value-a measure of the fluidity-of the slurry to be in the range of 300 to 900 dynes/cm.2.  When autogenous grinding is to be carried out, the grinding bodies may be regarded as those particles which will not pass through a sieve having 2 mm. meshes. The ratio of drum length to diameter of the mill should be between 0.5 and 2 and the rotational speed at or greater than the critical speed.  A partition may divide the drum into two compartments, the material being fed in at both ends and discharged through slots close to the partition.  Material from one compartment may be conveyed to the inlet of the other, or alternatively, the grinding in either one or both compartments may be in closed circuit. Specification 624,468 is referred to.
Patent GB-210048-A (GB)
Title: Improvements in moistening and inking rolls used in printing machines
IPC: B41F31/30
Filed: 1923-11-26
Abstract: 210,048. Schmautz, H. E. A. Tan. 19, 1923, [Convention date]. Damping-apparatus for lithographic machines; inking-apparatus.-In printing-machines having pneumatic moistening or inking rollers, the latter are supported when in working position in contact with at least three rigid rolls with parallel axes to prevent distortion due to the pneumatic pressure. The damping-mechanism shown comprises a supply roller 15, feed roller 11, distributing- roller 13, and forme rollers 10<a>, 10<b>, each pneumatic forme roller 10<a>, 10<b> contacting with an auxiliary roll 14 and also with the roller 13 and forme cylinder, and the pneumatic feed roller 11 being supported by two auxiliary rolls 16<a>, 16<b>. The Specification as open to inspection under. Sect. 91 (3) (a) comprises also a construction of pneumatic rollers, as shown in Fig. 1 (Cancelled), formed of 'an inner rigid body 1 secured to end discs 2 grooved at 3 for fixing the fabric, leather, rubber &c. casing 4, the annular space 5 being filled by a tubular casing inflatable by means of a valve 6. Ball bearings 8 support the roller on its shaft 9. This subject-matter does not appear in the Specification as accepted.
Patent GB-1517537-A (GB)
Title: Lasers and photo-detectors
IPC: H01S5/12
Filed: 1975-07-16
Abstract: 1517537 Semiconductor lasers POST OFFICE 5 Aug 1976 [16 July 1975] 29810/75 Heading H1C A single piece of semiconductor material 12 includes a laser 15 and a photodetector 14 arranged to receive an output beam from the laser. By monitoring the laser output in this way a further output beam, used, e.g. in an optical communication system, may be maintained at a constant intensity level (using the photodetector output in a feedback loop to the laser pumping source 24).
Patent GB-978719-A (GB)
Title: A process for obtaining pure optically active glutamic acid
Filed: 1962-08-03
Abstract: Optically active glutamic acid is prepared from a mixture of, (I) optically active and racemic glutamic acid; (II) soluble optically active and racemic alkali metal or ammonium glutamates; and (III) inorganic acid salts of optically active or racemic glutamic acid by treating the mixture with a substantially equivalent amount of an acid or alkali in (i) calculated on the racemic glutamic acid, in (ii) with an acid calculated on the optically active glutamate, and in (iii) with an alkali, calculated on the optically active salt, to form a water and/or alcohol soluble racemic salt and optically active glutamic acid. The mixture is adjusted with water and/or alcohol to substantially saturate the mixture with respect to the racemic salt and to form a solid phase containing the optically active acid and a liquid phase containing the racemic salt in equilibrium and separating the solid and liquid phases. The acids used may be hydrochloric, sulphuric and trichloracetic acids or an acidic cation-exchange resin, and the alkalis, sodium, potassium and ammonium hydroxides, diethylamine or an ion-exchange resin in (OH) form. The inorganic acid soluble salt of glutamic acid may be the glutamic acid hydrochloride or sulphate.
Patent GB-521547-A (GB)
Title: An improved arrangement of folding or collapsible type baby carriages or push chairs
IPC: B62B7/02
Filed: 1938-10-17
Abstract: 521,547. Types of road vehicles. BIRD. G. W. Oct. 17, 1938, No. 29979. [Class 108 (i)] A baby carriage or push chair of the folding type comprises in combination a single main support 1, Fig. 1, a saddle or seat 3, handle bars 5, folding axles 16, Fig. 3, and wheels 2, the parts being so arranged that the seat, handlebars, axles and wheels may be moved simultaneously to and from a.position, Fig. 3, directly adjacent to and substantially parallel with a plane passing vertically through the centre line of the support 1 and no part of the apparatus projects beyond the support a distance substantially greater than the radius of the wheels. A stay (not shown) may be hinged, as for example, on the rear side of the lug 6 so as to lie normally parallel with the support 1 but which may be swung into a position to act as a prop to render the device self-supporting.
Patent GB-359575-A (GB)
Title: Improvements in and relating to jacking apparatus
IPC: B60S9/10
Filed: 1930-08-05
Abstract: 359,575. Reciprocating- pumps. LOGETTE, A. I. and DAINTON, E. H., 186, Walmer Road, London. Aug. 5, 1930, No. 30055/29. [Class 102 (i).] In jacking apparatus of the kind wherein a number of fluid-pressure jacks are connected to the supply source through separate control valves, the several valves, together with a hand or poweroperated force pump, are all mounted inside the motive fluid reservoir so as to form a compact self-contained unit adapted for use either with jacks mounted on a motor vehicle or with independent jacks. The valve control chest 4, Fig. 3, and the pump body 17, Fig. 5, may be cast integrally with the fluid reservoir 14. Inlet and outlet passages 20, 21, for the pump and circulating passages 22, 22a, leading to the delivery outlets 8, are formed in the casting by drilling, the ends of the borings being sealed by metal obturators 23 secured by screw plugs 24. The reservoir may be formed with a flange 14a for attachment to the floor or dashboard of a motor vehicle, the jacks being connected to the respective outlets 8 by flexible pipes 19, the ends 25 of which are secured in the outlets by screwed sleeves 26. The valves controlling the outlets 8 comprise spindles 2 with conical seating ends 1 and enlarged threaded parts 2a operating in sleeves 5 screwed into the valve housing 4 and clamped by lock-nuts 5a. The upper ends of the spindles pass through glands 41 with packing 42 in the reservoir cover 15 and are provided with external handles 16 operating over indicator dials &c. The lower ends of the spindles pass through flanged packing sleeves 10 secured by screw plugs 9 and compressed around the spindles by internally-coned washers 11 pressed upwards by springs 12. The double barrel pump 17, Fig. 5, operated by a detachable handle 36, draws fluid from the reservoir through passages 20 and non-return valves 29 and delivers it through valved outlets 30 to the circulating passages 22 leading to the outlets 8. The fluid is returned to the reservoir, when the jacks are retracted, by means of a release valve 18 in the pump body. The pump plungers 27 are connected to a rocking crosshead 31 having a socket 32 for the handle. The valve 18, which is of the kind described in Specification 280,754, [Class 102 (i), Pumps &c.], comprises a screw-threaded stem 18a operating in a threaded sleeve 34 and formed with a head 35 engaging a squared bore in a sleeve 33 threaded into the socket 32. The sleeve 33 is also engaged by a reduced squared extension of the pump handle 36, enabling the release valve to be operated by rotation of the handle. A plate is provided to close the opening 38 in the reservoir cover 15, when the handle 36 is dismounted.
Patent GB-204565-A (GB)
Title: Improvements in directional submarine sound receivers
IPC: G10K11/00
Filed: 1922-11-03
Abstract: 204,565. Signal Ges. Oct. 9, 1922, [Convention date]. Drawings to Specification. Detecting and locating subaqueous sounds.- Subaqueous directional sound detectors are rigidly supported and are spaced away from the stern of a ship in order to avoid certain errors and disturbances. Each detector is carried by a rigid stem mounted on the bottom of a ship, or on the deck or conning tower of a submarine, and is surrounded by a stream-lined protective casing which is perforated to admit water.