baber/WOPTO huggingface dataset:
Patent GB-1427426-A (GB)
Title: Optical projection apparatus
IPC: G03B21/11
Filed: 1973-03-22
Abstract: 1427426 Optical projection apparatus J ROTTER 22 March 1973 [11 April 1972] 13869/73 Heading G2A An optical projection apparatus has at least two image-forming elements, at least one of which has a variable focal length, and at least two mirrors which can be disposed so that a light beam incident thereon from the image-forming optical system is reflected so that a marginal ray of the reflected beam lies parallel to, or forms an angle of less than 14 degrees with, the axis of the optical system. In the arrangement of Fig. 1, light from a lamp 10 passes through an original held in a guide 7, which original may be a frame of a film strip passing between cassettes 8, 8'. The light beam is then reflected by a mirror 11 to pass axially through an optical system comprising a zoom lens having elements 2, 3 and a magnification eye-piece 4. Two further mirrors 12, 13 reflect the light beam down on to a table 14 where a viewing screen may be provided. A marginal ray of this final beam lies parallel to the optical axis. A camera 20 may be inserted at the position shown. When not in use the mirror 13 and support rod 17 may be folded back about a pin 18 into the position shown in dash-dot line. In the arrangement of Fig. 2 the light beam passes in the reverse direction. The table 14 is replaced by a glass plate 22, against which a page of a book 26 is placed. This is illuminated by a lamp panel 24, and the reflected light beam is further reflected by mirrors 13, 12 through the optical system 4, 2, 3, mirror 11 then reflecting the beam to a film cassette 27. Fig. 3 (not shown) is a modification in which a mirror can be pivoted from one position, in which the light beam is reflected on to a photo-sensitive sheet, to another position in which the beam is reflected on to a viewing screen. In the further modification of Fig. 4 the light beam, after passing through the zoom lens and eye-piece system 40, 41, is reflected by a mirror 45 to a roller mirror 60 comprising five mirrors 61 offset helically with respect to one another. As the roller 60 revolves, each of the mirrors 61 is brought successively into the optical path, and reflects the light in a succession of beams 62 which fall on photo-sensitive material in a cassette 63. Data 52 can be projected by an auxiliary system 54, 55, 56 to be recorded on an edge of the photo-sensitive material.
Patent GB-807347-A (GB)
Title: Improvements in or relating to elements for high rupturing capacity electrical fuses
Inventor: ELLIOTT WILLIAM JAMES
IPC: H01H85/10
Filed: 1956-05-04
Abstract: 807,347. Fusible cut-outs. GENERAL ELECTRIC CO. Ltd. May 3, 1957 [May 4, 1956], No. 13908/56. Class 38 (1). The element 3 of a H.R.C. cartridge fuse is wound in the form of a spiral and has a transverse cross-section in the form of a rectangular channel, semi-circle, V or wave to provide rigidity. The ends of the element are connected through solder 6 and end plates 5 to the end caps 2, and the ends of the fuse are closed by saucer-shaped caps 7. The body 1 of the fuse is filled with arc-quenching material and may contain several elements.
Patent GB-612343-A (GB)
Title: Improvements in or relating to a feed and rapid traverse mechanism for a milling machine
IPC: B23Q1/25
Filed: 1946-05-09
Abstract: 612,343. Actuating and driving machines; brakes. CINCINNATI MILLING MACHINE CO. May 9, 1946, No. 14011. Convention date, May 21, 1945. [Class 83 (iii)] A feed and rapid traverse mechanism for milling machines &c. having a movable member comprises a prime mover driving said member through change - speed gearing and an overrunning clutch, a rapid traverse drive including a clutch and a momentum brake for said member and means for disengaging the rapid traverse clutch and for momentrialy applying the brake in a predetermined manner. The table 10 is traversed by a feed-screw 31 working in a fixed nut 32a and is reversed by the clutch 32. The screw is driven for feed purposes through the change-speed box 18 and an overrunning clutch 20 and for rapid traverse through a gear 36, clutch 38 and shaft 39. The clutch 40 is actuated by pistons 52, 53 which are operated by hydraulic pressure from a pump 54 under the control of either of the hand-operated valves 61 and 67. When the change is made from rapid traverse to feed, a brake 43 is applied to the shaft 39 and is held for a predetermined time by means of a valve 81 and check valve 84. The table may be automatically operated by controlling the valve 67 by a trip plunger 87 and bell-crank 94, the plunger being actuated by dogs 95, 96 at each end of the traverse. The clutch 32 is then automatically operated by a yoke arm 92.
Patent GB-596972-A (GB)
Title: Improvements in or relating to dry-contact rectifiers
IPC: H01L29/00
Filed: 1944-07-21
Abstract: 596,972. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. July 21, 1944, No. 14012. Convention date, July 16, 1943. [Class 37] In a rectifier element a thin metal disc 12 has a layer of selenium 14 on its periphery and counter-electrode alloy 16 on the selenium, a contact arm 24 of a contactor 22 bearing against the alloy. A number of such units may be mounted in series as shown in Fig. 1 on a shaft 18 of insulating material or having an insulating sleeve 20, each contactor 22 or 23 being electrically connected with the next element, and spaced from the disc whose periphery it contacts by an insulating washer 28. 26 is a connecting tab, and 30, 31 are metal washers, the former (30) having an extension forming a second connecting tab. A full-wave rectifier may be formed by reversing the position of two of the elements shown in Fig. 1, and providing each one with a lug 26 (see Fig. 3, not shown). In modifications (Figs. 4, 5 and 6, not shown), the selenium layer on a single disc may be divided into two separate equal sections to form a pair of rectifier elements in parallel, or into several sections of differing currentcarrying capacities.
Patent GB-775485-A (GB)
Title: Improvements in therapeutic compounds formed from modified saccharides
IPC: C08B37/00
Filed: 1954-05-13
Abstract: A polysaccharide compound having alphaglycol groupings oxidized to a modified saccharide containing two available reactive, hydrated carbonyl functions in each recurring unit of the polysaccharide structure is reacted in an aqueous solvent with thiosemicarbazide or an aminoaryl-thiosemicarbazone or a mixture of these compounds with isoniazid.  The preferred solvent is water and the term polysaccharide includes insulin, cellulose, oligosaccharides and polyuronides such as pectic or alginic acids. The oxidation of the polysaccharide to a modified saccharide may be effected with aqueous periodic acid or an aqueous periodate such as sodium metaperiodate. The product of such an oxidation contains recurring units of which Formula (I) is a typical example, and it is believed that water present in the reaction mixture reacts with these units so that a molecule of water links the carbonyl groups in each recurring unit to yield an oxygen linkage and 2 free hydroxyl groups.  This structure is then believed to be broken down by a compound containing a reactive primary amine group to give a product containing recurring structural units of which Formula (2) is a typical example <FORM:0775485/IV(b)/1> <FORM:0775485/IV(b)/2> R being the radical or nucleus to which the reactive amino group is attached.  In examples: (1) potato starch is treated in the cold with aqueous NaIO4, the oxidized starch is dissolved in boiling water and thiosemicarbazide is added to give a white precipitate of empirical formula C7H13N3O5S; (2) oxidized starch is reacted in hot water containing acetic acid with p-aminobenzaldehyde thiosemicarbazone to give a pale orange powder; (3) the process of Example (2) is repeated using a mixture of p-aminobenzaldehyde thiosemicarbazone and isoniazid.
Patent GB-1087585-A (GB)
Title: Improvements in or relating to tetrahydropyranylethers of steroids
IPC: C07J17/00
Filed: 1965-04-02
Abstract: Novel steroids of the formulae <FORM:1087585/C2/1> (wherein R is H or CH3; R1 is OH, Oacyl or tetrahydropyranyloxy; R2 is H, C1- 8 alkyl, C2- 8 alkenyl or C2- 8 alkynyl, or R1\h + R2 is keto; R3 is H, OH, Oacyl or CH3; R4 is H or a - or b -CH3; X is H, CH3, Cl or F; and Z is a double or single bond) and other 3-tetrahydropyranyloxy - D 4 - steroids of the androstane, 19 - norandrostane and pregnane series are prepared from the free 3b -ols and an excess of dihydropyran in the presence of an arylsulphonyl halide catalyst.  Free 17-ols are converted to the 3,17-bistetrahydropyranyl ethers.  Products which are 17-acylates can be hydrolysed and 17 ols acylated.  3 - Hydroxy - D 4 - and D 4, 6 - steroids used a starting materials are prepared by reduction of the corresponding D 4-3-keto-steroids, with, if necessary, protection of other OH groups e.g. at C-17, by esterification.  The steroid tetrahydropyranyl ethers of the invention are stated to promote nitrogen retention when administered orally, variously to possess anti-estrogenic, blood cholesterol lowering, gonadotrophin inhibiting and progestational properties, and to be useful in fertility control, and they may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-696129-A (GB)
Title: Improvements in roller electrode welding machines
Inventor: HENDERSON JOHN LEONARD
IPC: B23K11/31
Filed: 1950-06-07
Abstract: 696,129. Welding by pressure. TUBE MAKING MACHINES, Ltd. May 31, 1951 [June 7, 1950], No. 14174/50. Class 83 (iv). In a roller-electrode welding- machine in which the electrodes 16, 17 are rotated by the work, a chain-wheel 2 is mounted on the head spindle 1 and is driven by an electric motor to enable the electrodes to be trued. A stationary sleeve 7 through which the spindle passes mounts inlet and outlet pipes for cooling water, with means for establishing communication between said pipes and inlet and exhaust passages 3, 4 in the spindle. The sleeve 7 contains sealing- rings which form annular channels 8, 9 registering with ports 5, 6 formed in the periphery of the spindle.
Patent GB-1109334-A (GB)
Title: A magnetic reed relay
Inventor: COMB JAMES
IPC: H01H1/02
Filed: 1966-03-30
Abstract: 1,109,334. Electromagnetic relay. ELECTROTHERMAL ENGINEERING Ltd. 15 March, 1967 [30 March, 1966], No. 14179/66. Heading H1N. An electromagnetic relay has a sealed magnetic reed contact unit 6 and operating coil 5 in an insulating box 1 lined with magnetic screening material. The inside of the box between lines 3, 4 and its lid (not shown) is plated with a nickel-iron, or nickel-cobalt alloy or nickel or other magnetic material. The box may be made of formaldehyde resin or epoxy resin and have its " free space " filled with silicone rubber.
Patent GB-1033683-A (GB)
Title: Rectifier assembly having a plurality of parallel connected semi-conductor diodes
Inventor: RILEY JOSEPH JOHN
IPC: H01L25/03
Filed: 1965-04-05
Abstract: 1,033,683. Rectifying. TAYLOR-WINFIELD CORPORATION. April 5, 1965, No. 14251/65. Heading H2F. A polyphase rectifier assembly comprises parallel semi-conductor diodes mounted on conducting discs around a plurality of concentric tubular conductors, the innermost one being a neutral conductor. The impedances between the terminal area of a disc and each diode are equal and a further conducting disc mounted parallel to the first has the other connections of the diodes arranged on it in such a way that the impedances between the terminal area of the further disc and each diode are equal. Holes or grooves may be made in the discs to equalise the impedance of different discs or to compensate for the terminal area not being at the centre of the circle on which the diodes are disposed.
Patent GB-354377-A (GB)
Title: Improvements in or relating to frictional epicyclic train mechanism
IPC: F16H15/56
Filed: 1930-05-09
Abstract: 354,377. Friction gearing. GODFREY, E. L., Woodchester Works, Woodchester, near Stroud, Gloucestershire, and COWBURN, F. C., 17, Welsh Street, Chepstow, Monmouthshire. May 9, 1930, No. 14261. [Class 80 (i).] A frictional epicyclic train comprises a spring- pressed sleeve b slidable on the central shaft a and having a point contact with each of the planetary rollers d. If a is the driving-shaft, the driven shaft is a hollow one supporting the rollers d. The sun gear f may be fixed to shaft a, as shown, or slidable under spring pressure as described in Specification 354,761. The drive is engaged by applying a brake o to an internal gear member g. The rightward thrust on the rollers d by presser sleeve b may be resisted by a floating ring h described in Specification 297,396, [Class 80 (i), Gearing, Belt &c.].
Patent GB-1318848-A (GB)
Title: Milk replacer for mammals
Inventor: VAN OS H F
IPC: A23C11/04
Filed: 1972-03-27
Abstract: 1318848 Milk replacer AKZO NV 27 March 1972 [26 April 1971] 14273/72 Heading A2B A mother's milk replacer for non-human mammals, in particular calves, comprises fats, proteins, carbohydrates, and minerals, the protein content including at least one source of protein other than skim milk, there being present sufficient calcium disodium ethylene diamine tetra-acetate such that the assimilable iron content does not exceed 10 ppm. The protein may be for example soya powder, fish meal, blood meal, whey powder, potato protein or protein obtained by growing yeast cells on a paraffin wax nutrient medium.
Patent GB-418910-A (GB)
Title: Improvements in or relating to curtain-operating mechanism
IPC: A47H5/032
Filed: 1933-05-17
Abstract: 418,910. Operating theatre curtains. HALL, G. S., 29, Rosedene Avenue, Streatham, London, and HALL, R. G., 19, Osterley Gardens, Thornton Heath, Surrey. May 17, 1933, No. 14279. [Class 132 (i).] Curtain-operating mechanism in which the curtains are drawn laterally and simultaneously festooned is provided with means to complete the festooning during part of the lateral movement and cause the festooning to be retained during the rest of the drawing operation. The curtains are suspended by bobbins 46 sliding on rails 47 and operated by draw wires 14, 15 which pass around a grooved draw barrel 13 operated by a reversible motor 11. At some distance from the leading edges of the curtains the bobbins are replaced by travellers 42 mounted on ball races 43 and carrying pulleys 41 over which pass the festooning wires 20, 21 which pass through rings 22 on the curtain and are carried over fixed pulleys 24, 25 and a moving jockey pulley 26 and connected to the framing at 27. The top of the jockey pulley 26 is connected by a wire 29 passing over a fixed pulley 30 to a weight 28 while the bottom of the jockey pulley is connected by a wire 31 to a draw barrel 32 on the shaft of the barrel 13. The curtains are thus rapidly festooned during the first part of the draw movement and to retain the festooning during the rest of the draw movement the wire 31 passes by way of a snail 37 to a second grooved barrel 35 of half the diameter of the barrel 13 so that the festooning wires 20, 21 are then drawn off at the same rate as the draw wires.
Patent GB-514698-A (GB)
Title: Improved liquid control valve or regulator
IPC: G05D11/03
Filed: 1938-05-13
Abstract: 514,698. Valves; treating grain. SIMON, Ltd., H., and BRIAN, J. C.' May 13, 1938, No.14279. [Class 135] [Also in Group I] A valve device particularly adapted for controlling the supply of liquid to grain with which it is mixed in predetermined proportions comprises a rotary cylindrical valve the casing of which has an inlet branch b and an elongated slot c extending around a part of the circumference while the valve member d has a slot e adapted to bridge said' inlet branch and delivery slot. The valve member is secured to a spindle g rotatably mounted in a removable cover and provided with an actuating wheel f. In the proportioning apparatus shown in Fig. 3 a constant head of liquid is maintained over the valve inlet by a float operated valve fitted with an indicating pointer k. Grain entering at m falls on a presser plate n connected by an arm p and link with a three-armed lever r, s, t on the spindle s<2> of the grain valve u which co-operates with an outlet port fitted with a triangular baffle v. A clip adjustably mounted on the arm t is coupled to a cord or the like secured to the wheel f. A weighted lever s' acts on the arm s in the direction required to close both valves.
Patent GB-1460175-A (GB)
Title: Headbox for a paper-making machine
IPC: D21F1/06
Filed: 1974-04-01
Abstract: 1460175 Paper-making apparatus ESCHER WYSS GmbH 1 April 1974 [17 April 1973] 14312/74 Heading D2A  In a headbox 2 comprising a nozzle duct 6 extending between a partition such as perforated plate 5, and a slice opening, the nozzle duct being defined between slice lip portions 8, 10, whose positions can be adjusted by mechanisms 14, 16, and the screen 7 of a paper-making machine, the mechanisms 14, 16 and the slice lip portions 8, 10 are mounted on a support structure 12, 15, 17 which is pivotally attached as a unit at 18 to the fixed casing 3 of the headbox such that the unit can be pivoted, e.g. by hydraulic cylinder device 19, to a position (Fig. 2-not shown) in which the screen 7, the plate 5, and the interior of the nozzle duct 6 are exposed for maintenance and cleaning.
Patent GB-279147-A (GB)
Title: A process for the production of cellulose from cellulose-containing materials
IPC: D21C3/04
Filed: 1926-06-07
Abstract: 279,147. Classes, A. June 7, 1926. Cellulose solutions and processes for making products therefrom.-Cellulose is obtained from wood meal, paper refuse, and the like by dissolving in strong hydrochloric acid with or without another strong acid such as sulphuric or phosphoric acid, at or below 0‹ C. or not substantially above 0‹ C. preferably with the introduction of gaseous hydrochloric acid, separating any undissolved material, and adding a precipifating agent such as an alkali salt. The precipitation may be effected by adding the precipitant in solid form, or in suspension or concentrated solution, or by adding the cellulose solution to a suspension or concentrated solution of the precipitant. Precipitants mentioned are alkali chlorides and sodium and ammonia sulphates. In the examples, wood meal or sawdust is moistened with hydrochloric acid of any desired concentration or with a mixture of hydrochloric and sulphuric aicds, and gaseous hydrochloric acid is admitted to the mass, which may be in a rotary cylinder or autoclave, the temperature being kept between 0 and -15‹ C. until the cellulose is dissolved. After separating undissolved material, the solution is run into a strong solution of potassium chloride or sodium sulphate and the precipitated cellulose is separated and washed and may be treated with air or inert gases to remove the last traces of hydrochloric acid. Gaseous hydrochloric acid is then introduced into the mother-liquid to precipitate alkali chloride which, as well as the acid liquor, is available for use again. Specifications 10605/14 and 104,173 are referred to. One of the Provisional Specifications mentions straw as a raw material, and states that the cellulose may be precipitated by diluting the acid solution with 10 times its volume of water.
Patent GB-1432052-A (GB)
Title: Radar simulators
IPC: G01S7/40
Filed: 1973-03-26
Abstract: 1432052 Radar simulators SINGER CO 26 March 1973 [13 April 1972] 14425/73 Heading H4D A simulator of several radars (e.g. of training purposes) includes a computer memory 21 in which data representing radar targets over a wide portion of the earth is stored on a magnetic drum 23 in XY form and divided into subsets each of which contains data which can be seen by the radar on a ship which is anywhere within that subset; when an instructor inserts into the computer, from source 43, the (XY) os  coordinates of an own ship (i.e. the ship carrying the radar being simulated) the computer 24 searches drum 23 the identified subset is stored in core 22 and, utilizing (XY) os  and the XY co-ordinates of the targets stored in core 22, converts it into polar co-ordinates and arranges it in a particular store 26 to 29 by polar co. ordinates. One combination of a store 26, a register 33 and a display 38 is for one own ship and the arrangement shown is for four own ships. Once the computer has converted all the radar data in core 22 into polar co-ordinates and transferred it into the particular one of stores 26 to 29 for which it was intended, core 22 is cleared and the subset for the next own ship is read into it from drum 22. The radar data may include elevation. The logic and other digital items necessary for these operations is described in detail Figs. 3 to 5 (none shown).
Patent GB-1421323-A (GB)
Title: Pharmaceutical compositions containing sodium tri-n-propylacetate
IPC: A61K31/19
Filed: 1973-12-10
Abstract: 1421323 Compositions containing sodium tri-n-propylacetate LABAZ 10 Dec 1973 [11 Dec 1972] 14425/75 Divided out of 1415228 Heading A5B [Also in Division C2] Sodium tri-n propyl acetate has neuroleptic properties and forms with a carrier a pharmaceutical composition which may be administered orally, parenterally or rectally.
Patent GB-496214-A (GB)
Title: Process for the production of water-insoluble diaromatic peroxides
IPC: C07C409/00
Filed: 1937-05-25
Abstract: Diaromatic peroxides are made by reacting one or more chlorides of aromatic acids and an alkaline peroxide solution in presence of a dispersing agent, such as a sulphonated oil, e.g. turkey red oil, a soap, sodium taurocholate, saponin, or lecithin or mixtures thereof. The product may be mixed with an inert inorganic or organic powder or made into a stable suspension with water and a protective colloid. In examples, (1) a mixture of m- and o-toluyl chlorides is introduced into a cooled solution of sodium peroxide containing ricinoleic acid, with agitation, giving a mixture of m.m1-, o, o1- and m.o1-toluyl peroxides; (2) benzoyl chloride is introduced into a solution of hydrogen peroxide and caustic soda, containing oleic acid, the degree of fineness of the product being controlled to a grain size 1-3m  or 5-10m  by regulating the rate of addition of the acid chloride and the speed of stirring; the oleic acid may be replaced by some of the above-mentioned dispersing agents.
Patent GB-722554-A (GB)
Title: Improvements in or relating to the manufacture of flat glass in continuous ribbon form
IPC: C03B13/04
Filed: 1953-06-08
Abstract: 722,554. Glass. PILKINGTON BROS., Ltd., WYNNE, H. C., and NUTTALL, J. R. L. June 8, 1953 [June 9, 1952], No. 14525/52. Class 56 In the manufacture of flat glass in continuous ribbon form R by flowing molten glass from the spout of the furnace on to a moving casting surface 7, the rate of flow of the glass in the middle area of the spout is restrained to compensate for the slower speed of the more viscous glass in the side areas of the spout whereby the ribbon of glass formed on the casting surface has a cross section of substantially constant thickness. This is effected by making the lip 4 convex, the centre 4a of the lip, in the central area of the spout, being above the floor level L and the ends 4b of the lip, in the side areas, being below the floor level. The upper face of the ribbon is engaged by rollers 17 only at its edges. After formation of the ribbon, it passes over a chamber whereby its under surface is swept by a flame to give it a fire-finish, the ribbon being held somewhat spaced above the flaming chamber by means of a suction canopy.