baber/WOPTO huggingface dataset:
Patent GB-685334-A (GB)
Title: Improvements in and relating to objective lenses
IPC: G02B13/00
Filed: 1950-09-27
Abstract: 685,334. Optical objectives. VOIGTLANDER & SOHN AKT.-GES. Sept. 27, 1950 [Jan. 16, 1950], No. 23679/50. Class 97 (i). In an anistigmat of modified Gausss type having two lens combinations arranged one on each side of an internal stop, each combination consisting of a meniscus dispersing component adjacent to the stop and a collecting component beyond the dispersing component and having its outermost surface concave to the stop, the two components of the front combination being menisci concave to the stop and each consisting of two lenses of opposite sign which lenses have broken contact or are cemented together, the front lens of the front meniscus component is a meniscus lens of such dispersing power that the radii of the adjacent surfaces of the lenses of this component are less than the radius of each of the other two surfaces of this component and are also less than two-thirds of the objective focal length. The front combination of the objective shown consists of lens groups I and II, the radii of the adjacent surfaces R2, R2<SP>1</SP> of the lenses of the front component being less than the radii of surfaces R1 and R3 and less than the two-thirds of the focal length. Preferably, the radii R2, R2<SP>1</SP> are each less than 80 per cent of the diameter D of the objective entrance pupil and less than the radius of each of the surfaces R5, R5<SP>1</SP>. Also, the sum of the radii R1 and R6 may lie between 0.8D and 1.8D, while the difference thereof is less than 0.8D. Optical data are given for one example.
Patent GB-397672-A (GB)
Title: Process for tanning animal hides
IPC: C14C3/20
Filed: 1932-08-24
Abstract: Tanning-agents are prepared by condensing a non-sulphonated dioxydiphenylsulphone with an aromatic sulphonic acid and formaldehyde or sulphur chloride.  Among the sulphonic acids which are particularly suitable are those of substituted phenol ethyl ethers such as are obtained by etherifying phenol with glycol chlorhydrin or ethylene dichlorides.  According to the examples: (1) Naphthalene sulphonic acid is condensed with dioxydiphenylsulphone and formaldehyde; (2) tetrahydronaphthalene sulphonic acid is condensed with dioxydiphenylsulphone and formaldehyde; (3) the product obtained by sulphonating diphenylglycol ether with 93 per cent sulphuric acid is condensed with dioxydiphenylsulphone and formaldehyde; (4) the product obtained by sulphonating monophenyl glycol ether with 95 per cent sulphuric acid is condensed with dioxydiphenylsulphone and formaldehyde; (5) naphthalene sulphonic acid and dioxydiphenylsulphone are condensed with sulphur chloride. Specification 375,160 is referred to.
Patent GB-1035078-A (GB)
Title: Preparation of radioactive substances
Inventor: BOUTEILLER EPHREM
IPC: G21G1/02
Filed: 1965-06-03
Abstract: 1,035,078. Preparation and separation of radioisotopes. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 3, 1965 [June 5, 1964], No. 23778/65. Headings G6P and G6R. A substance is made radioactive by subjecting to a neutron flux a mixture of the substance with an additive, and separating the two components by a method dependent on a chemical or physical difference between the substance and the additive. Preferably, the substance and the additive are mixed in powder form and the mean diameter of the particles of the powdered substance is less than the mean free path of neutrons within the substance. The powdered mixture is preferably compressed into pellets before irradiation. A mixture of powdered europium oxide and alkali metal carbonate is pelletted, irradiated in a nuclear reactor, and separated by washing out the alkali metal carbonate with water. Alternatively, a sintered mass of silica is impregnated with a solution of europium chloride, dried, irradiated, and then the europium chloride is extracted with dilute hydrochloric acid and europium precipitated as oxalate. In another embodiment, activated iridium is made by compacting a powdered mixture of iridium and carbon, irradiating, and calcining to remove the carbon. The method may also be used to irradiate gold, thallium, or substances enriched in the isotopes Eu151. Ir191, or Re185.
Patent GB-1116016-A (GB)
Title: Corrosion-proofing primer coating and metal article coated therewith
IPC: C08G59/70
Filed: 1967-05-23
Abstract: A composition comprising a solution in at least one organic solvent of: (A) 50 to 65 parts by weight of a composition consisting essentially of one part by weight of a polymeric polyol (i.e. a polymer containing several hydroxy groups), 0.05 to 5.0 parts of an epoxy aryl ether, and 0.1 to 2.0 parts of phosphoric acid; (B) 0.01 to 1.5 parts of a dilute aqueous solution of at least one inorganic, water-soluble chromium compound, at least a portion of the chromium in said solution being hexavalent chromium; and (C) 4-30 parts of a non-reactive inorganic filler. Preferred component A is a styrene-alkyl alcohol copolymer and the epoxy aryl ether prepared by the reaction of epihalohydrin with a phenolic compound, e.g. epichlorohydrin with bisphenol A. Preferred component B is a dilute aqueous solution containing (1) calcium dichromate and (2) partially reduced chromic acid. Preferred components C are silica, alumina, carbon black, titanium dioxide, magnesium silicate or a clay. Organic solvents employed in the examples are methyl isobutyl ketone, xylene, ethyl acetate, isobutyl alcohol, ethylene glycol monobutyl ether and high boiling aromatic solvent.  In examples, component B is prepared by partially reducing chromic acid with methanol and water and adding calcium dichromate.ALSO:A metal article is provided with a protective film by applying to its surface a film comprising a composition comprising a solution in at least one organic solvent of (A) 50-65 parts by weight of a composition consisting essentially of one part by weight of a polymeric polyol (i.e. a polymer containing several hydroxy groups, 0.05-5.0 parts of an epoxy aryl ether, and 0.1-2.0 parts of phosphoric acid; (B) 0.01-1.5 parts of a dilute aqueous solution of at least one inorganic, water-soluble chromium compound, at least a portion of the chromium in said solution being hexavalent chromium; and (C) 4-30 parts of a non-reactive inorganic filler, and drying said film.  The compositions may be applied by dip-coating, roller-coating or spraying &c.  They are particularly suitable as primer coatings for steel surfaces, also aluminium, galvanized steel and similar metal surfaces.  The primer-coated surface may then be further treated with a siccative organic coating composition e.g. an alkyd, epoxy or acrylic paint.
Patent GB-893692-A (GB)
Title: Improvements in or relating to the separation of bromine or iodine from solutions containing the same
Inventor: AVESTON JOHN
IPC: C01B7/09
Filed: 1957-07-29
Abstract: Bromine or iodine is extracted from a solution thereof by contact with an anion exchange polystyrene resin in halide form, the halogen of the halide being the same as or stronger than the halogen being extracted.  The resin may be a quaternary ammonium polystyrene.  The resin may be regenerated by washing with an organic solvent for the halogen, e.g. alcohol or acetone, or with a solution of a compound reactive to the halogen, e.g. a solution of aniline or styrene in alcohol, of ethylene in ethylene dibromide, or an aqueous solution of sodium bisulphite or thiosulphate.  The solution treated may be a 48% aqueous hydrogen bromide solution containing free bromine, a 30% aqueous hydrogen iodide solution containing free iodine, or sea water which has been acidified with sulphuric acid to produce a pH of 3,5 and then treated with chlorine to liberate free bromine.ALSO:Bromine or iodine is extracted from a solution thereof by contact with an anion exchange polystyrene resin in halide form, the halogen of the halide being the same as or stronger than the halogen being extracted.  The resin may be a quaternary ammonium polystyrene.  The resin may be regenerated by washing with a solution of a compound reactive to the halogen, e.g. a solution of aniline or styrene in alcohol or of ethylene in ethylene dibromide, when halogenation of the double bond takes place.  The solution treated may be a 48% aqueous hydrogen bromide solution containing free bromine, a 30% aqueous hydrogen iodide solution containing free iodine, or sea water which has been acidified with sulphuric acid to produce a pH of 3.5 and then treated with chlorine to liberate free bromine.
Patent GB-1047626-A (GB)
Title: Friction engaging mechanism
IPC: F16D55/02
Filed: 1963-06-17
Abstract: 1,047,626. Friction clutches; cooling disc brakes. BORG-WARNER CORPORATION. June 17, 1963 [June 29, 1962], No. 24094/63. Headings F2C and F2E. To reduce relative sliding between frictionengaging elements of a clutch or brake, either the driven (or rotary) disc 115 is freely rotatable on and mounted eccentric to a driven (or rotary) shaft 112 (Fig. 2, not shown) or, as shown, the presser plate 214 is freely rotatable in and eccentric to a driving (or fixed) housing 213. As shown, pressure fluid supplied through ducts 224a ... 224c to servos 218a, 218b moves the presser plates 214a, 214b towards each other to clamp driven discs 216a, 216b between the presser plates 214a 214b and an intermediate plate 217 which is eccentric to and freely rotatable in the housing 213. During initial engagement the presser and intermediate plates tend to rotate with the discs 216a, 216b relative to the driving housing 213 which causes eccentric motion of the plates relative to the housing and orbital motion relative to the discs 216a, 216b which are driven thereby. The clutch is cooled by fluid flowing through ducts 221a, 221b, 223, 223a . . . 223h. In Fig. 1 (not shown), the housing 13 is fixed to provide a brake. In Fig. 2 (not shown), a driven disc 115 is freely rotatable on an eccentric 125 of a driven shaft 112 and the disc 115 is clamped between presser and back plates 114, 117 fast with a driving housing 113.
Patent GB-478558-A (GB)
Title: Improvements relating to dividing heads and tables and like instruments or devices
IPC: B23Q16/02
Filed: 1937-09-03
Abstract: 478,558. Dividing-mechanism. HIRST, C. Sept. 3, 1937, No. 24098. [Class 83 (iii)] [Also in Group XX] A series of balls or rollers 55 are positioned in an annular groove 54 formed between the meeting surfaces of two relatively rotatable parts 53 57, and are held against movement around the groove relatively to one part 53 by an adjustable plunger 56. A plunger 58 is mounted upon the other part 57 for movement towards the groove to engage either one or two of the balls or rollers and hold the two parts in desired relative angular position. A third member 61 may be angularly adjustable relatively to the member 57 by a similar arrangement in which the number of rollers 60 is different from the number of rollers in the groove 54. The plungers 58, 59, may be formed as described in Specification 472,234.
Patent GB-812826-A (GB)
Title: Improvements in or relating to taper chemical milling apparatus
IPC: B01L99/00
Filed: 1955-08-22
Abstract: 812,826. Electric tests. NORTH AMERICAN AVIATION Inc. Aug. 22, 1955 [Oct. 4, 1954], No. 24118/55. Class 37. [Also in Group XXXVIII] In apparatus for producing a taper by inserting or withdrawing the workpiece with respect to a bath of etchant, the rate of withdrawal is controlled in accordance with etchant conductivity and bath temperature. Alternatively the object does not move but the rate at which liquid is pumped from the bath is varied. As shown, the workpiece 2 is suspended in the bath and is arranged to be raised or lowered by motor 20. A heater 6 and temperaturesensitive resistance element 4 maintain the temperature of the bath approximately constant. A cell 8 produces a voltage proportional to etch conductivity while a resistance thermometer 9 senses bath temperature. Each of the elements forms one of the arms of a bridge circuit fed with a reference A.C. and unbalance signals are fed through combined thermionic and magnetic servo-amplifiers to drive servomotors 12, 13 which rebalance the bridges by adjusting variable resistors in one of the other arms and position the sliders of potentiometers to produce an output voltage which controls motor speed through magnetic amplifiers 17, 18. The control circuit is shown in Fig. 5, potentiometer 5 being set by the output of servomotor 12 and potentiometer 62 by servomotor 13. Potentiometer 51 is logarithmic. A reference voltage is applied across terminals 52. An output signal is fed to the control windings of magnetic amplifier 94 which is the sum of a voltage derived from manually set potentiometer 95, a voltage produced by potentiometers 51, 62 and a feed-back voltage derived from tacho-generator 99 driven by the motor 20. The control windings of the amplifiers are series connected and control the shunt fields of a motor-driven generator G and the control motor itself. Thus the voltage of speed of the motor is adjusted on changes of both conductivity or temperature until the feed-back voltage offsets the increase. In the arrangement of Fig. 3 the conductivity cell 68 controls the amplitude of an A.C. voltage appearing across a resistor 69 the voltage being amplified at 70, fed through logarithmic circuit comprising resistors 71, 72 and a proportion which depends on the value of temperature-sensitive resistor 73 fed to a control circuit 77. In a further modification (Fig. 4, not shown), the conductivity cell is in one arm of a bridge while a temperature variable resistor forms one of the ratio arms. The output of the bridge controls a servomotor to position a motor-speed control resistor.
Patent GB-1529769-A (GB)
Title: Device for introducing a liquid other than blood into an organ
IPC: A61M5/165
Filed: 1977-06-09
Abstract: 1529769 Infusion apparatus G CHARVIN 9 June 1977 [9 June 1976] 24159/77 Heading A5R An infusion assembly for infusing liquids other than blood into a vein, comprises a hollow hypodermic needle 3 mounted at one end of a first hub portion 4a, and a membrane 1 which is permeable to air, impermeable to blood, and permeable to the liquid to be administered, membrane 1 being held between first hub portion 4a and a second hub portion 4 which has a frusto-conical internal surface for receiving the male end of a liquid-administering device. Membrane 1 may be a textile or wire gauze having meshes of 5-30 microns and is preferably treated at least on the surface facing the needle with heparin, p.t.f.e. or a silicone. The rigid needle may be provided with a flexible portion or be replaced by a flexible tube for use with a removable stylet in which case the hub has two branches, the membrane being provided in one branch, Figs. 4-6 (not shown). The membrane may be provided in a removable adapter for use with a conventional infusion needle, Figs. 7-10 (not shown).
Patent GB-612081-A (GB)
Title: Improvements in or relating to guards for pneumatic drop hammers or hydraulic presses
IPC: F16P3/04
Filed: 1946-08-14
Abstract: 612,081. Machinery guards. COOKE, F. A. Aug. 14, 1946, No. 24176. [Class 80 (iv)] In guard-control mechanism for pneumatic drop hammers or hydraulic presses, verticallyslidable front and rear guards 2 are carried by rods 10 adapted to be locked in the safety position by the projecting stems 7 of two locking piston valves 5, connected in series, engaging the heads 10a of rods 10. The machine is started, after closing the guard, through a pedal-operated valve 1, to allow air from the main, 12, to pass through a pipe 14 to an inlet 15 of the locking cylinder 4 of the piston valve 5, which is at this instant closed. Tapped off the line 14 is a line 16 having a non-return valve 17 through which air is delivered through branch pipes 16a and inlets 20 to open the pistons 5 and look the guards. The outer wall of each locking cylinder 4 has a small bleeder hole 20a through which air can escape to close the pistons and release the guards. Should the operator take his foot from the pedal whilst pressure is in the ram cylinder, the guards are kept locked by said pressure acting through lines 21 and non- return valves 22 on the inlets 20 to hold the pistons 5 open.
Patent GB-1604157-A (GB)
Title: Apparatus and method for limiting access to a security system
IPC: G07C11/00
Filed: 1978-05-30
Abstract: A security system in which access at remote locations is limited to personnel inserting in the system a coded data card, the data of which compares favorably with data stored in a memory. The memory data comprises a table which permits access to selected terminals by selected personnel at selected times. Programming access to the system for the purpose of altering data in the access authorization table is limited to individuals who insert a supervisor's card into the system, which card enables the logic required for altering the authorization table.
Patent GB-233236-A (GB)
Title: Improvements in egg testers
IPC: G01N33/08
Filed: 1924-10-14
Abstract: 233,236. Kerr, A. J. Oct. 14, 1924. Eggs, testing. - A device for testing eggs comprises a box 1 fitted internally with an electric lamp 2 and having a lid 3 formed with one or more apertures 4 to the edges of which are secured strips 11 faced with felt or wadding 10. The lid 3 may, as shown, be pivotally mounted by means of a screw 6 and held in the closed position by a catch 7, 8, or it may be fixed, in which case the bottom 9 is removable. Reference has been directed by the Comptroller to Specifications 8204/14, 12804/14 and 182,206.
Patent GB-650153-A (GB)
Title: Improvements in or relating to readily detachable couplings
IPC: F16L37/23
Filed: 1948-09-16
Abstract: 650,153. Disconnectible couplings. WESTLAND AIRCRAFT, Ltd., GRAY, R. W., and STONE, J. N. Sept. 16, 1948, No: 24373. [Class 99(i)] In a detachable coupling for members such as a spigot 11 and socket 2, one of the members 11, as shown, has a series of holes containing balls 9 which are adapted to be outwardly thrust by rotation of a cam-ring 10 mounted on the member 11 and carried by a sleeve 14 into locking engagement with an internal annular groove 5 in the member 2 or an associated part, if such is provided, a self-sealing washer 7 providing an air-tight connection.
Patent GB-689330-A (GB)
Title: Improvements in doors and like pivoted elements
Inventor: EDSON ARTHUR DANIEL
IPC: E05D7/08
Filed: 1950-10-05
Abstract: 689,330. Door-operating appliances. STANMORE SPRINGS, Ltd. Oct. 5, 1950, No. 24373/50. Class 65 (i) Means for coupling the vertical spindle of a floor spring to a swinging door, for enabling the closed position of the latter to be adjusted, comprise a channel member 5 adapted to be fitted to the edge of the door 4, a separate end block 6 fitted to the end of the channel member, a socket member 8 rotatably mounted in the end block, and a lever 10 projecting from the socket member into a channel in the member 5, the lever being engaged by a threaded spindle 11 traversing the said channel and accessible from either face of the door. Both upper and lower edges of the member 5 are of channel form, the upper channel accommodating the door and an extension 7 of the end block, and the lower channel the lever and spindle. The member 8 is formed with a square socket 9 for the spindle of the floor spring.
Patent GB-498071-A (GB)
Title: Improvements in door opening and door securing contrivances
IPC: E05F13/04
Filed: 1937-09-07
Abstract: 498,071. Door-operating appliances. GIBBONS, Ltd., J., and GIBBONS, F. J. J. Sept. 7, 1937, No. 24395. [Class 65 (i)] A door-opening device comprises a bell-crank lever e, f pivoted on a fixed horizontal axis d near the outer edge of the door b, and a spring keeping one arm e upright against a bracket &c. l on the door and the other arm f in position to form a pedal k, depression of which turns the arm e and opens the door.
Patent GB-231092-A (GB)
Title: Improvements in or relating to crushing machinery
IPC: B02C1/04
Filed: 1924-10-15
Abstract: 231,092. Phelps, P. Oct. 15, 1924. Crushers with vibrating jaws.-A crusher for coal, stone, &c. has an oscillating crushing-plate with a curved crushing-surface pivotally mounted between the ends of the crushing-surface on an eccentric mounting, with means for oscillating the plate upon the mounting, and means for actuating the eccentric mounting for effecting a relief of pressure. As shown, Figs. 1 and 3, the stationary breaker-plate is pivoted at its upper end 14, and has a curved' portion 15 and a flat portion 16 terminating in a detachable flat plate 17. Rods 21 supported by pins 20 in bearings 19 on the side walls 18 of the breaker-plate extend longitudinally through the side frames 10 of the machine and are provided with springs 22 which bear at one end against the frames 10 and at the other end against adjustable washers 23 on the rods. The curved base-plate 25 of the crushing-plate has side walls 26 terminating in a bearing-portion 27 and carries detachable facing-plates 126, 128 supporting detachable crushing and cutting teeth 127 of different sizes. The centres of curvature of the upper and lower portions 126, 128 of the crushing-plate are eccentric with respect to the eccentric pivot or shaft 29, the radius of curvature of the lower portion 128 being smaller than that of the upper portion 126. The non-eccentric or supporting portions 31 of the shaft 29 are larger in diameter than the shaft 29 to allow the shaft to be removed through the bearing openings in the side frames 10. One end of the shaft 29 carries a driving-pulley 32, and the other end carries a wheel 33 gearing with a wheel 133 on a shaft 34 supported in bearings 36, 37. An eccentric 38 on the shaft 34 operates a link 39 supported on a pin 43, carried by ears 42 on the plate 25. Fig. 8 shows modified means for oscillating the crushing-plate upon its eccentric mounting, the link 139 being adjustable in length and an adjustable eccentric collar 137 being provided between the shaft 134 and the eccentric 138.
Patent GB-835123-A (GB)
Title: Laminated electrode for a salt bath furnace
IPC: H05B3/60
Filed: 1956-08-13
Abstract: 835,123. Furnace electrodes. AJAX ELECTRIC CO. Aug. 13, 1956 '[April 13, 1956], No. 24693/56. Class 39(3) An electric salt bath furnace electrode includes a portion having a plurality of parallel laminations which expose a relatively large surface area to the atmosphere for cooling purposes and which interleave with elements of a bus-bar. As shown, a furnace F has a pot P, a movable cover C and one or more pairs of electrodes E each of which comprises a hot leg HL welded at 31, 32 to an intermediate portion IL welded in turn at 30 to a cold leg CL constituted by laminations 27, 28 and 29 which interleave with and are clamped to elements 33 and 34 of a bus-bar B or B<SP>1</SP> of a power source T. The electrodes are clamped in place by bolts 22 passing through washers 23, insulators 24 and an angle iron 25 secured to furnace side supports 8. The furnace walls are chamfered as at 18 and closely surrounding tiles such as 19 and 20 minimize contact between the intermediate portion IL and the atmosphere in the region of the salt bath level 13. The inner lamination 28 is thicker than the outer laminations 27, 29 and may have an interior passage (Fig. 5, not shown) for the circulation of a liquid coolant.