baber/WOPTO huggingface dataset:
Patent GB-863210-A (GB)
Title: Improvements in or relating to light sensitive devices
Inventor: TAYLOR STANLEY
IPC: H01J9/233
Filed: 1956-07-24
Abstract: 863,210. Photo-electric devices. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 11, 1957 [July 24, 1956], No. 22811/56. Drawings to Specification. Class 37. A light-sensitive device, such as a television pick-up tube, comprises a light-sensitive layer consisting of or including photo-conductive antimony selenide in spongy form, in order to obtain increased sensitivity at the red end of the spectrum. The spongy form has a lesser degree of photo-conductive lag and a higher resistivity than the solid form but to improve the overall sensitivity of the device the layer preferably includes antimony trisulphide, or some other photo-conductive material such as selenium, cadmium sulphide or cadmium selenide. When antimony trisulphide is employed the amount may range between 80 and 50% but is preferably 78%. The photo-conductive material is preferably evaporated in an atmosphere of xenon at a pressure of 0.4 mm. of Hg., but other suitable gases such as argon, nitrogen or air at a pressure between 0.3 and 0.9 mm. of Hg may be used to obtain the porous or sponge-like structure of the layer. When a plurality of photo-conductive materials are used they may be evaporated from a mixture or from separate sources either simultaneously or consecutively. The device may have one or two spongy layers formed on a transparent conductive coating of a tin salt on the window of the tube and a solid photo-conductive layer may be formed on the outer spongy layer by evaporating material which has deposited on other parts of the tube by evacuating the tube to a high degree of vacuum. The total thickness of the photo-conductive layer or layers is preferably about 5 microns, the solid layer being from 0.5 to 1 micron in thickness.
Patent GB-1141333-A (GB)
Title: Device for the removal of the underwinding of a cop
IPC: B65H67/08
Filed: 1966-05-23
Abstract: 1,141,333. Winding yarns. W. REINERS. 23 May, 1966 [26 May, 1965], No. 22858/66. Heading D1J. A device for the removal of underwinding from a cop 1 by means of a curved suction pipe 4 overlapping over the underwinding 3 of the cop, is characterized in that a cutting device 6 for the sucked-away thread is provided in the curvature of the pipe 4. The pipe 4 is provided with a slot 5 at the position of the smallest radius of curvature thereof. The device 6 is secured outside the slot 5 and may comprise three knives 6a, 6b, 6c, Fig. 3, of razor blade form, the knives 6a, 6c being parallel to one another. A circle of barbs 8 is provided in the mouth of the pipe 4. Preferably, the pipe 4 is fixed and, in use, the cop 1 is introduced from above the pipe mouth and briefly raised and lowered a number of times. If the thread end 2a protruding from the underwinding 3 and the thread end 2b which forms the start of the winding are intertwined, then the relative movement between the pipe 4 and the cop 1 causes the barbs 8 to tear these ends apart. The end 2a is drawn through the slot 5 and is severed by the device 6 and the backwinding 2 is partly unwound.
Patent GB-621378-A (GB)
Title: Ophthalmic apparatus for testing the field of vision (bowl perimeter) with artificial lighting and means for the optical projection of a light mark
IPC: A61B3/024
Filed: 1945-09-05
Abstract: 621,378. Sight-testing apparatus. STREIT, W. HAAG-, (trading as HAAG-STREIT, WERKSTATTE FUR PRAZISIONSMECHANIK). Sept. 5, 1945, No. 22862. Convention date, Nov. 2, 1944. [Class 97 (i)] In a perimeter for testing the field of vision comprising a hemispherical bowl, over the inner surface of which a sight mark is moved, the latter consists of a light spot projected by a device pivoted about a vertical diameter of the bowl and carrying a projection device rotatable about a horizontal axis passing through the centre and vertex of the bowl. The mark may thus be projected to any part of the bowl under the control of a lever system. As shown, the bowl 1 has an aperture 4 through which the patient's eye may be observed by a telescope 5, and is diffusely illuminated by a lamp 3, as described in Specification 621,377. The mark projector 33 is pivoted in a tube 24 supported by tubes 22, 23 on a member 21 mounted in bearings 19, 20, to rotate about a diameter of the bowl, light from the lamp 3 reaching the projector via mirrors 29, 31, 32. Rotation of the projector 33 and of the member 19 is effected by a lever 13 sliding in a sleeve 14 horizontally rotatable in a fork 15a pivoted in a vertical trunnion 15b. One end of the lever 13 engages a ball joint 16 on a crank 17, which rotates a shaft 25, thereby rotating the projector 33 through a belt 27, the lever 13 simultaneously effecting rotation of the whole device about the axes 19, 20. Lever 13 is connected to the guide 12 of a pantograph 11, Fig. 2, the other arm of which has an index 9 moving over a diagram 8. Thus by setting the index at any point on the diagram, the light mark is directed on to the corresponding point on the bowl 1. The pantograph may be omitted and the free end of the lever 13 carry the index 9 co-operating with the diagram 8. Filters 35 permit variation of the intensity of the projection beam.
Patent GB-316265-A (GB)
Title: Improvements relating to the bleaching and dyeing of jute, hemp, and like fibrous materials
IPC: D06L4/30
Filed: 1929-07-25
Abstract: 316,265. Robertson, T. E., (Assignee of Spectrum Dyes Proprietary, Ltd,). July 26, 1928, [Convention date]. Bleaching, processes and materials for.-Jute, hemp, &c. is bleached by treatment successively with a weak chlorine solution and solution of sulphur dioxide or other reducing agent containing sulphur and oxygen without the use of intermediate chemical treatment. The fibre is first treated with a cold solution prepared from bleaching powder and acetic acid, and then, after washing, with a boiling solution of sodium hydrosulphite to which sulphonated castor oil after a time may be added. Or bisulphite of zinc may be used for the second solution. After washing and drying, the fibre may be fast dyed with any normal direct dye by employing soda ash, sodium chloride and sodium sulphate in the boiling dye bath. The process may be repeated.
Patent GB-804061-A (GB)
Title: Improvements relating to beet harvesting machines
IPC: A01D27/04
Filed: 1957-07-19
Abstract: 804,061. Beet harvesters. JONGENEEL, A. M. July 19, 1957 [April 9, 1957], No. 22958/57. Class 6(3). A beet harvester comprises a spiked pickup wheel 3 and a topping mechanism 1 mounted in a floating frame 4 which is movable up and down towards and away from the wheel, the downward movement being limited by a stop arrangement. The frame 4 has upright posts 5 and a cross-bar 6, the lower ends of the posts 5 being fixed to arms 7, pivoted at 8 to a longitudinal frame 2, and vertically movable in guides 9 also fixed to the frame 2. Springs 12 urge the frame 4 downwards, and each of the posts 5 has a stop rod 13 slidably carried in vertically spaced ears 14, 15, and with an adjustable post 16 normally resting on a crossbar 11, each stop rod 13 being engageable by a cam 17 projecting from a cross-shaft 18 rotatably mounted on the cross-bar 6. Short radial arms 19, fitted to the shaft 18, carry rotatably a nut 20 which receives the shaft 21 of a hand crank 22 which may be turned to raise or lower the cams 17 and thereby the frame 4. Plates 24 and 25, each pivoted on one of the posts 5, carry respectively sleeves 28 and 32 in which shafts 29 and 33 are respectively mounted. The shaft 29 carries a cutting disc 30, cleaned by a scraper 31 mounted on the plate 24, and shaft 33 carries a cutting disc 34. An adjustable stop rod 35, pivoted to the sleeve 28 at 36, extends through a bracket 37, fixed to a bar 38 which is rigididly secured to one of the posts 5, and includes a shoulder 39 abutting against the bracket 37 through which an adjustment screw 40 is threaded. The screw 40 bears against a finger 41 rigidly fixed to the sleeve 32. Adjustment of the rod 35 and the screw 40 enables the spacing between the shafts 29 and 33 to be varied ; a tension spring 42 fitted between the finger 41 and a bolt 43 connected to the sleeve 28 provides lateral resilience when discs 30 and 34 are subjected to a heavy load. The shafts 29 and 33 are driven from the shaft 46 by an endless chain and sprocket unit, an idler shaft 45 rotatably carried in a post 44 being similarly driven and transmitting drive to a beet deflecting auger 52 rotatably mounted on the post 44. A rubber curtain 51 is secured between an extension 50 of the post 44 and one of the posts 5 to deflect the beets which, when topped, pass round on the discs 30 and 34 and fall on to a conveyer 54. Stripper bars 55 remove the foliage and tops from the spiked wheel 3, the foliage then passing over a driven roller on to a conveyer, Fig. 3 (not shown).
Patent GB-861471-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J5/00
Filed: 1957-07-19
Abstract: The invention comprises steroids of the formul\m 9 <FORM:0861471/IV (b)/1> <FORM:0861471/IV (b)/2> and <FORM:0861471/IV (b)/3> (wherein R is hydrogen or the acyl radical of a hydrocarbon mono- or di-carboxylic acid containing 1 to 12 carbon atoms, R1 is alkyl or aryl, R11 is hydroxy or keto and X1 is chlorine, bromine, iodine or fluorine); and their preparation by dehydration e.g. with sulphuric acid or with a hypohalous acid followed by treatment with sulphur dioxide, of a compound of the formula <FORM:0861471/IV (b)/4> (wherein Ac is the above-defined acyl radical), treatment of the resulting 6-alkyl- or 6-aryl-17a  : 21 - dihydroxy - 1 : 4 : 9(11) - pregnatriene-3 : 20 - dione 21 - ester with an acid HOX (wherein X is chlorine, bromine or iodine) to obtain the corresponding 9a -halo-11-hydroxy compound, treatment of this with a base e.g. anhydrous potassium acetate, to obtain the corresponding 9b  : 11b -oxido compound, reaction of this with HF to obtain the corresponding 9a  - fluoro - 11 - hydroxy - compound or the free 21-hydroxy compound and oxidation of this to give the corresponding 11-keto-compound.  Compounds of the invention wherein R is a hydrogen atom may be obtained by hydrolysis of any of the above intermediates and may, if desired, be subsequently re-esterified, and compounds of the general formula (I) wherein R11 is keto and X1 is chlorine, bromine or iodine may be obtained by oxidation of the corresponding 11-hydroxy compounds.  The oxidations are preferably effected with chromic acid in acetic acid.  Other methods of dehydration and epoxidation are also referred to.  Examples are given.  Steroids of the general formula IV are prepared by reacting 11b  : 17a  : 21-trihydroxy-5-pregnene - 3 : 20 - dione 3 : 20 - bis - (ethylene ketal) with perbenzoic acid to give 5a  : 6a -oxido-11a  : 17a  : 21 - trihydroxyallopregnane - 3 : 20-dione 3 : 20-bis(ethylene ketal), reacting this with the appropriate alkyl or aryl Grignard reagent R1MgHal to give 5a  : 11b  : 17a  : 21 - tetrahydroxy - 6b  - R1 - allopregnane - 3 : 20 - dione 3 : 20 - bis(ethylene ketal), and from this the free 3 : 20-dione, dehydrating this to give 6a - or 6b -R1-hydrocortisone (acetate described), dehydrogenating this with a culture of Septomyxa affinis or other micro-organisms in the absence or presence of steroidal promoters or with selenium dioxide to form 1-dehydro-6a - or 6b -R1-hydrocortisone and, if required, converting this to a 21-ester thereof.ALSO:Pharmaceutical compositions comprise 1-dehydro - 6 - methyl - 9a  - fluoro - cortisone and -hydrocortisone and the 21-esters thereof and suitable carriers, and may be in the form of tablets, ointments, lotions, jellies, creams, suppositories, bougies and aqueous suspensions.
Patent GB-1203910-A (GB)
Title: Conjugate spinning
IPC: D01D5/32
Filed: 1969-05-06
Abstract: 1,203,910. Composite acrylic filaments. ASAHI KASEI KOGYO K.K. 6 May, 1969 [8 May, 1968], No. 22959/69. Heading B5B. Composite bi-component filaments having an eccentric sheath-core or a side-by-side arrangement are made by conjugate wet-spinning, from a nitric acid type solvent, a first fibre component comprising a polymer C which is a mixture of (1) a copolymer A consisting essentially of acrylonitrile, methyl acrylate or methacrylate and methallyl sulphonic acid which satisfies the inequalities; v+2Àlw 18À23 < 0; v+w-7À95 > 0; v+0À02w-0À55 > 0 and v+ 0À01w - 0À674 < 0, wherein v is the per cent by wt. of methallyl sulphonic acid and w the per cent by wt. of the acrylate component and (2) a copolymer B consisting essentially of the above polymers and acrylamide and which satisfies the inequalities (*); x+1À75y- 19À45 < 0; x+ 3À3y - 28À63 > 0; x - 0À0208y - 0À4288 > 0; x +0À013y - 0À6904 < 0; t+u=y; u # 2 and x # v, wherein x is the per cent by wt. of methallyl sulphonic acid, u the per cent by wt. of acrylamide and t the per cent by wt. of the acrylate component, the copolymer C containing 25-75% by wt. of copolymer A and also satisfying inequalities (*) above, and a second fibreforming component comprising copolymer A. The spinning solvent and coagulant may be aq. HNO 3 , free of HNO 2 , and of 66-75% and 28-40% concn. respectively. The spun filaments may be washed, drawn, dried, heattreated at 100-150 C., further drawn and finally heat-relaxed to crimp them. A spinneret comprises a chamber (8, 9) above each orifice (10, 11) which receives the two polymer components from separate inlets (4, 5, 6, 7) and combines them for spinning.
Patent GB-905253-A (GB)
Title: Method of making a semicrystalline body, a semi-crystalline body, article comprising the semicrystalline body, and method of making it
IPC: C04B35/497
Filed: 1960-06-30
Abstract: 905,253. Ceramic glass. CORNING GLASS WORKS. June 30, 1960 [July 1, 1959; May 18, 1960], No. 23000/60. Drawings to Specification. Class 56. [Also in Group XXXVI] A semi-crystalline ceramic body intended for use as a dielectric comprises, as to at least 30- 90%, the constituent oxides of at least one oxygen octahedra ferro-electric compound, at least 30% of the body being in the form of a crystalline phase uniformly dispersed in another phase, being crystallized in situ from a homogeneous glass, the body containing at least one glass-forming oxide. The percentages quoted are " cationic mol." figures, i.e. figures calculated in respect of molecules, or part molecules, containing one cationic atom, e.g. SiO 2 , AlO 1 . 5 . The glass-forming composition is melted, cooled and heat-treated to crystallize it. The temperature at which crystallization occurs is determined by " differential thermal analysis," i.e. observing discontinuities in the rate of change of temperature, during heating, as a result of endothermic and exothermic processes occurring in the glass. The optimum heat treatment temperature is mid-way between the crystallization temperature and about 50 ‹ C. below the melting temperature which can be similarly determined. The length of treatment decreases with increasing temperature. The preferred oxygen octahedra ferro-electric compound is barium titanate and the initial composition for this purpose contains 30-15% BaO, 15-10% TiO 2 , the amount of BaO being 0-100% in excess of the 1/1 stoichiometric equivalent of BaTiO 3  on the amount of TiO 2  present, 7-26% SiO 2 , 3-30% AlO 1.5 , the amount of AlO 1.5  not differing from the amount of SiO 2  by more than about <SP>4</SP>/ 3  of the amount of SiO 2  and 0.5 to 1.5% F, the total of BaO, TiO 2 , SiO 2 , AlO 1.5  and F being at least 90%. Other oxides which may be added are those of K, Li, Be, Mg, Ca, Sr, Zn, Cd, Ga, In, Ti, Y, La, Ce, Zr, Ge, Sn, Sb, Bi, V, Nb, Ta, Cr, Mo, W, Te, U, Mn, Fe, Co, Ni, Pb, Cu. Other compositions are given in which the glassforming oxide used instead of, or in addition to, SiO 2  is B 2 O 3  or P 2 O 5 . Further compositions are given which form a body in which the ferroelectric compound consists of one or more of:- titanate of barium or cadmium; niobate of sodium, potassium, strontium, cadmium, barium or lead; zirconate of cadmium, barium or lead; tantalate of sodium or cadmium; ferrate of lead or lanthanum; germanate of iron; tungstic oxide. Specification 567,996 and U.S.A. Specification 2,405,529 are referred to.
Patent GB-282165-A (GB)
Title: Improvements in the purification and softening of water
IPC: B01J39/02
Filed: 1926-09-17
Abstract: 282,165. Paterson, W. Sept. 17, 1926. Purifying liquids.-In order to soften and sterilize water it is treated with excess of caustic lime, then subjected to carbonation and finally passed through a zeolite bed. The carbonation may be effected either by adding carbon dioxide directly or as a solution of predetermined strength.
Patent GB-958371-A (GB)
Title: Improvements in or relating to electronic tachometers
IPC: G01P3/48
Filed: 1960-07-01
Abstract: 958,371. Frequency detectors. SUN ELECTRIC CORPORATION. July 1, 1960 [Oct. 19, 19591, No. 23149/60. Heading H3A. [Also in Division G1] In a tachometer for an internal combustion engine, Fig. 2, in which the frequency of pulses derived from the engine ignition circuit is measured, capacitor 18 is charged through resistor 44 to the stabilizing potential of Zener diode 46, the capacitor being discharged through transistor 38 each time a pulse, derived from the ignition circuit of the engine and rectified and filtered in the circuit shown on the left of Fig. 2, is applied to the base of the transistor. The discharge circuit for the capacitor 18 is completed via diode 20 whilst the charging current flows through meter 22 whose indication is therefore proportional to the engine R.P.M. Capacitor 18 is variable to enable adaptation of the tachometer to engines having different numbers of cylinders or different numbers of strokes per cycle.
Patent GB-261502-A (GB)
Title: Improvements in and relating to protective coatings for metals
IPC: C23C10/52
Filed: 1925-09-17
Abstract: 261,502. North, N. E. Sept. 17,1925. Coating.-In a sherardizing process for coating metal articles, the articles are treated with a mixture of zinc and cadmium with or without other ingredients such as sand and ground carbon. The commercial metal known as dust may be used and the proportion of cadmium may vary from 1-20 per cent. In an example a mixture is used containing 5 per cent of cadmium.
Patent GB-263456-A (GB)
Title: Improvements in or relating to brake mechanism for vehicle wheels
IPC: B60T11/04
Filed: 1926-09-22
Abstract: 263,456. Brookes, N. E., (Bendix Brake Co.). Sept. 22, 1926. Blocks and shoes acting on drums; force - transmitting mechanism.-Operating mechanism for a brake or the steering-wheel of a vehicle includes a lever 62 fulcrumed at its inner end on the frame 20 and having at its outer end a joint which is moved in applying the brake to a position in or immediately adjacent the swivelling axis of the wheel, the lever being operated by means 72 engaging it between its ends. The support for the inner end of the lever may include a flexible fabric member 64 of triangular shape secured at two corners 66, 68 to the frame 20 and carrying the lever 62 at the other corner, endwise movement of the lever being thus provided for. The outer end of the lever is connected by a ball and socket point to the end of the levers 60 on the shaft 38 which rotates the operating cam 36. The centre of the ball and socket joint is preferably slightly to the inside of the swivelling axis of the wheel so that on rounding a curve the brake on the outer wheel is applied less strongly than that on the inner wheel. In a modification the operating lever is arranged below the swivelling axle of the steering wheel and the inner end is pivoted on the axle. The operating mechanism described may be used in connection with an arrangement of three shoes comprising a reverse shoe, a central shoe and a servo shoe, or in connection with a first shoe and a servo shoe only.
Patent GB-176291-A (GB)
Title: Improvements in or relating to portable stands for boiling sets
IPC: A47J36/34
Filed: 1921-09-03
Abstract: 176,291. Marris, G. S. Sept. 3. 1921. Supports for artictes to be heated.-A stand 7 for supporting utensils over a lamp is provided with brackets 6 hinged so that they may take the position shown to support the utensil, or be turned outwardly over the rim to allow the utensil to telescope in the stand. Slightly modified forms of the brackets 6 are described.
Patent GB-653884-A (GB)
Title: Improvements in and relating to connecting devices
IPC: B65D41/04
Filed: 1948-09-07
Abstract: 653,884. Closures for containers. SIMON, J. E. Sept. 7, 1948, No. 23499. [Classes 66 and 125 (iii)] [Also in Groups XXV and XXXVI] Means for connecting two members to-  gether comprises a plane surface b on one member with a projection c, part at least of which is cylindrical, at right angles thereto, a plane surface on the second member with a cylindrical bore f at right angles thereto, one or more screw threads g<SP>1</SP>, g<SP>11</SP> on one cylindrical form and one or more protuberances h<SP>1</SP>, h<SP>11</SP> on tne other to engage when the projection is rotated in the bore, and one or more projections from the plane surface of one member which engage one or more abutments on the other member to prevent rotation after the members have reached a predetermined relative position, at which position the plane surfaces of the two members are in one plane. Figs. 1, 3, 4 and 8 show embodiments in which the invention is applied to scent bottles to ensure that the bottle and closure are aligned. In Fig. 1 arcuate projections i<SP>1</SP>, i<SP>11</SP> on the stopper engage and abut the ends of arcuate slots j<SP>1</SP>, j<SP>11</SP> in the container, and in Fig. 3 projections l<SP>1</SP>, l<SP>11</SP> engage recesses m<SP>1</SP>, m<SP>11</SP>. In Fig. 4 the bottle o and closure n form a heart shape, the bottle has a dovetail projection p cooperating with the recess q in the closure, and the parts engage by means of the screw thread g<SP>1</SP>, g<SP>11</SP>, the rotation being limited by abutments engaging slots j<SP>1</SP>, j<SP>11</SP>. In Fig. 7 the bottle r and closure s have a raised flower decoration, and rotation is limited by projections on the closure entering arcuate slots u on the bottle, the bottoms of the slots being shaped to the same pitch as the screw thread. The parts may be of glass, plastic, metal &c., and the two parts may or may not be of the same material and colour. The invention may be applied to electrical connections in which the contacting surfaces of the two members are provided with resilient or other electrical contacts.
Patent GB-1152863-A (GB)
Title: Method and device for Voltage Regulation
IPC: H02M3/335
Filed: 1966-05-26
Abstract: 1,152,863. Automatic voltage control. CROUZET. May 26, 1966 [May 29, 1965], No.23507/66. Heading G3R. A load 4 is supplied from an unstabilized D.C. source 1 by way of a squarewave generator 2 and a smoothing circuit 3, the pulses produced by generator 2 being width-modulated in dependence upon output voltage variations as detected by a comparator 5 which also receives a reference voltage Vr, whereby there is derived an error signal for application to a regulating circuit 6 associated with an oscillator 7; the output from circuit 6 is applied over an amplifier 8 to control the generator 2, the arrangement being such that the pulses produced by the latter have a frequency set by the oscillator 7 and a width determined by the said error signal. These width modulated pulses are applied to the load over a transformer, a rectifier and a filter, the modulation being such that the load voltage is maintained constant. The regulating circuit 6 includes a thyristor 6c and a Schmitt trigger 6b, and a suitable transistor arrangement for the system as a whole including an overload protective circuit is described with reference to Fig.4 (not shown).