baber/WOPTO huggingface dataset:
Patent GB-856275-A (GB)
Title: Improvements in or relating to fluid control valves
IPC: G05D7/06
Filed: 1957-02-18
Abstract: 856,275. Valves. REGIE NATIONALE DES USINES RENAULT. Feb. 18, 1957 [Feb. 5, 1957], No. 21603/60. Divided out of 856,274. Class 135. A movable valve-closure member 160, Fig. 1, which is made of rubber or elastic plastic material, comprises a disc 163 slidable in a bore 164 and incorporating a guide stem 165 with a collar 168 which bears against the valve body 155 and lifts the member 160 so that a part 170 thereof bears against a seat 161, the stem 165 and collar having four axial slots that are associated with recesses 176 in the disc 163. The seat 161 is made of elastic material and has a peripheral toric ring 175 clamped between the body 155 and a nut 162; the upper seat face is formed with concentric beads 177 and radial grooves 178 which open into passages 179 in the nut 162. In the inoperative position fluid is present in the chambers 167, 174, and upon depressing a button 157 an elastic packing 182 around the button stem 181 is compressed and the closure part 170 is unseated whereupon the fluid in chamber 174 escapes to atmosphere via grooves 178, passages 179 and slots 180 in the button guide sleeve; the latter is retained by an elastic ring. In a modification, the atmospheric slots are replaced by an outlet connection 189, Fig. 4, and the stem 190 has vanes 191 thereon whilst within the button 185 is a ribbed elastic packing 192 which abuts the top of the stem 190. A seating bellows 196 is disposed between the button 185 and upper body part 182<1>. When the button 185 is depressed by a cam, not shown, acting through a roller 201 and a lever 198, a shoulder on the packing 192 contacts a body shoulder 195 and the closure member 160 is unseated. The packing 192 absorbs any over travel of the button 185. In a further modification (Fig. 5, not shown), a vent connection is provided which is normally open to the outlet connection but upon operation of the button a valve comprised of an annular packing on the stem shuts off the communication between these connections. In another modification (Fig. 6, not shown), the closure member, which is elongated, is actuated by an electromagnet, the coil of which is disposed within the valve body; a grooved steel collar is attached to the closure member and the atmospheric openings are covered by an elastic packing on the body exterior. In a further modification (Fig. 7, not shown) the atmospheric openings are replaced by an outlet connection. In a still further modification, a packing 225, Fig. 8, which is slidable in a sleeve 229, has a slit collar 230, the elasticity of which urges the packing on to a seat 232 and permits communication between the outlet connection 226 and the atmospheric ports 227. Upon energization of the electromagnet the closure member 260 is unseated and the fluid lifts the packing 225 to cut-off the communication between the connection 226 and ports 227 and allow egress of fluid through passages 236 in the packing 225 leading to the outlet connection 226.
Patent GB-1003007-A (GB)
Title: Improvements in or relating to the production of ethyl acrylate
Inventor: SNELL RONALD CHARLES
IPC: C07C69/54
Filed: 1963-05-30
Abstract: Ethyl acrylate is prepared by continuously feeding a mixture containing acrylic acid and at least 1 mole of ethanol per mole of acrylic acid into a reactor maintained at an elevated temperature and containing an acid catalyst, removing the vaporized reaction products from the reactor, passing them to an intermediate point in a distillation column operated under reduced pressure, and recovering an overhead fraction comprising ethyl acrylate from the column.  An entrainer such as ethyl acetate may also be present. When the entrainer is ethyl acetate it may be formed in the reaction vessel from acetic acid present in the acrylic acid feed. An example is given.  Specification 923,594 is referred to.
Patent GB-1152575-A (GB)
Title: Purification of Aromatic Polycarboxylic Acids.
IPC: C07C67/00
Filed: 1966-05-16
Abstract: 1,152,575. Purifying aromatic polycarboxylic acids. STANDARD OIL CO. 16 May, 1966 [17 May, 1965], No. 21654/66. Heading C2C. Aromatic polycarboxylic acids, particularly those containing aldehyde impurities which are produced by catalytic liquid phase oxidation of polyalkylaromatic hydrocarbons, are purified by contacting an aqueous solution of such acid at elevated temperature and pressure and in presence of H 2 -containing gas with a Pt-group metal-containing catalyst under mild hydrogenation conditions, the purified acid being recovered from the solution by crystallization employing controlled-rate evaporative cooling. Details are given for the purification of terephthalic acid, but the process is said to be also applicable to isophthalic, trimesic, trimellitic, mellitic and naphthalenedicarboxylic acids.
Patent GB-1168192-A (GB)
Title: A Centering Element for Bobbins
Inventor: STEFFENINI FRANCESCO
IPC: B65H75/18
Filed: 1968-05-08
Abstract: 1,168,192. Bobbins; centring elements. F. STEFFENINI. 8 May, 1968 [12 May, 1967], No. 21672/68. Heading B8M. A centring element for a yarn bobbin comprises a first portion 2 secured to the inner surface of the bobbin 1, and a second portion 7 abutting a spindle 3 for rotatably driving the bobbin, the two portions 2 and 7 being interconnected through at least one flexible arm 6 integral with both portions. By means of the flexible arm 6, radial deformations of the bobbin 1 are not transmitted to the portion 7 abutting the spindle. The portion 7 is annularly shaped and may comprise a plurality of annular segments adjacent one another. The first and second portions 2 and 7 preferably lie on different planes and the flexible arm 6 is a tubular member. The first portion 2 is preferably integral with the bobbin 1. The bobbin may be provided internally with fins parallel to the bobbin axis or in a helical configuration. Slots engaging keys on the spindle may be provided at the base of the bobbin.
Patent GB-579993-A (GB)
Title: Improvements in telescope observation instruments
IPC: G02B7/06
Filed: 1943-12-27
Abstract: 579,993. Telescopes. BARR & STROUD, Ltd., and FRENCH, SIR J. W. Dec. 27, 1943, No. 21703. [Class 97 (i)] In a water-tight prism telescope or binocular, having its end lenses fixed in position in the casing, a concave lens 5 intermediate the objective 1 and the prisms is movable axially for focusing by means operable from outside the casing. In the form shown, the lens 5 is carried by a slide 6 moved by a rack and pinion 8, 9 operable by a small diameter spindle attached to an external head provided with a water-tight rubber sleeve. In a modification, the lens 5 is situated between two elements of a compound objective. The use of the negative lens diminishes the obliquity of the rays and so avoids the necessity of using prisms of high refractive index glass. Specification 435,220 is referred to.
Patent GB-662028-A (GB)
Title: Improvements in bricklayers' gauging devices
IPC: G01C15/12
Filed: 1949-08-22
Abstract: 662,028. Lines for bricklayers. CLIFTON, D., and CLIFTON. D. R. Aug. 22, 1949, No. 21772/49. Class 20(ii) In a bricklayer's gauging device comprising rods provided with means for attaching a guide string, the rods are mounted vertically and in spaced relation from the wall structure by cramp bolt devices having spiked or tanged ends for insertion into mortar between courses already laid. the other ends being adjustably screw connected to the rod. Cramps comprising a block 6 having a hooked end 6a to embrace the rod 1, and bored to receive a spiked bolt 4 threaded at the outer end and provided with a wing nut 7, are used in conjunction with cranked clamp bolts 9 each extending through a transverse aperture in the rod and having a threaded end to receive a wing nut 10. A screw 8 passing through a lug in the block 6 and a grub screw 11 passing through an aperture in the rod and abutting the wall assist in positioning the rod. In a modification wherein the clamp bolts 9 may be dispensed with, the block 6 is provided with a pivoted plate adjustable by screws. In another modification for use at internal corners co-operating cramp bolts passing through apertures in the rod are provided with wing nuts having reversed action. In a further modification, Fig. 5, a flat plate 18 has a tang 19 and aperture 20 wherein engages the shouldered end of the bolt 22. A guide string attachment and spirit level which may be mounted on the rod are described.
Patent GB-1383882-A (GB)
Title: Tow truck for truck conveyor systems
IPC: B60B33/02
Filed: 1973-05-08
Abstract: 1383882 Tow truck conveyer systems S I HANDLING SYSTEMS Inc 8 May 1973 21773/73 Heading B7L [Also in Division F2] A tow truck 10 has one-way bearings in its front wheels 16 to prevent backwards movement of the truck. Thus a truck whose accumulation bumper has been operated will remain in position with its drive pin 22 out of engagement with the conveyer beneath the guide slot 24 until the obstruction operating the bumper has moved. As illustrated in Fig. 3, the one-way bearing is a roller bearing which surrounds a fixed wheel shaft 38 and is a force fit on the inner rim of the wheel 36. Rollers 47 are located by races 42 and 44 joined by a wall 46. When the wheel attempts to move in the reversing direction, cam surfaces 52 wedge the rollers against the shaft to prevent movement. During forward movement, the rollers operate without restriction in spaces 50. In a modification (not shown), the bearing is a force fit on the shaft 38.
Patent GB-321158-A (GB)
Title: Improvements in and relating to apparatus for centrifugal casting hollow metal bodies
IPC: B22D13/10
Filed: 1928-07-27
Abstract: 321,158. Croad, A. K., (Sand Spun Patents Corporation). July 27, 1928. Casting-machines; metal-pouring. - A centrifugal casting- machine has means for feeding empty moulds to the casting position and discharging them at the opposite side of the machine. Moulds 5, Fig. 3, for casting pipes &c. are supplied by a runway 11 to the machine, charged moulds being removed on a runway 12. After a cast has been made, a platen 10 is raised by a plunger 39 and engages legs 8 to lift the hood 6, then legs 15 to lift the bridging rails 13, which are inclined to cause the charged mould to roll towards the rails 12 and an uncharged mould to be arrested between the supporting rolls 4. Switch rails 20 pivoted at 19 are also lifted by the legs 15 to cause a mould on the rails 11 to roll onto the bridging rails 13. When the platen is lowered the fresh mould is deposited on the rolls 4 and the hood over it. As soon as the mould is free from the rails 13 the fall of the platen 10 is arrested, by closing the three-way valve 103, Fig. 1, the ladle 21 is filled with molten metal and a fork-ended adjustable strut 32 is inserted between a lever 34, operated by the platen, and a frame 22 pivoted in one of the notches 27 and in which the ladle is supported. The valve 103 is then reopened to exhaust so that the hood completes its downward movement and, by means of a leg 62 and lever 58 operates control mechanism 50, as described in Specification 278,560, which, with float control 115, causes an electric motor 70 to rotate the mould slowly at first and then, after a predetermined time, rapidly. An electromagnetic or other clutch is used to connect mould and motor. The spout 38 has renewable insets of refractorv material to take the impact of the metal from the ladle and is given an inclination which, having regard to the other factors, will ensure the metal reaching the end of the inclined mould quickly but without any rebound. That part of the spout where the metal from the ladle strikes may, for instance, be formed as an arc having a radius equal to one eighth of the length of the mould.
Patent GB-1259976-A (GB)
Title: Urea synthesis process
Inventor: MAVROVIC IVO
IPC: C07C67/00
Filed: 1969-04-30
Abstract: 1,259,976. Urea synthesis. I. MAVROVIC. 30 April, 1969 [16 May, 1968], No. 21920/69. Heading C2C. Urea is synthesized by reacting ammonia and carbon dioxide in a reactor to form an aqueous urea solution (A) containing ammonium carbamate and ammonia, said aqueous urea solution (A) is split into a major portion thereof and a minor portion thereof, said minor portion of said aqueous urea solution (A) is cooled, said major portion of said aqueous urea solution (A) is passed to a first ammonium carbamate decomposer wherein ammonium carbamate is decomposed to ammonia and carbon dioxide and the resulting gaseous phase containing ammonia and carbon dioxide are expelled from said aqueous urea solution (A) together with water vapour and ammonia in said solution (A), and forming a first decomposition product (D) comprising a gaseous phase (B) containing ammonia gas, carbon dioxide gas and water vapour and a liquid phase (C) comprising an aqueous urea solution containing residual ammonium carbamate and urea, the improvement which comprises the sequential steps of passing said first decomposition product (D) containing said gaseous phase (B) and said liquid phase (C) into a lower section of a separator, wherein said gaseous phase is separated from said liquid phase (C) and rises in said separator, passing said minor portion of said aqueous urea solution (A) at a lower temperature than said gaseous phase (B) into an upper section. of said separator counter currently to said separated rising gaseous, phase (B) to heat said minor portion of solution (A) to a temperature above the decomposition temperature of ammonium carbamate to decompose ammonium carbamate in said minor portion of solution (A) to ammonia and carbon dioxide, and to cool said gaseous phase (B), removing said gaseous phase (B), and recovering the resulting aqueous urea solution.
Patent GB-385561-A (GB)
Title: Anti-dazzle lamps
IPC: F21S13/00
Filed: 1932-08-05
Abstract: 385,561. Suspended or pedestal lamps. MULLER, C. F. O., 138, Kaiserstrasse, Karlsruhe, Baden, Germany. Aug. 5, 1932, No. 22065. Convention date, Jan. 28. [Class 75 (ii).] In a suspended or pedestal lamp in which the electric lamp bulb a or other source of light is surmounted by a large dome-shaped member b made wholly or mainly of translucent or opaque material and is surrounded by one or two rather small cylindrical, conical, parabolic or other annular members c, d made of translucent glass, such members being adapted to reflect or diffuse all rays of light direct from the source, the annular members c, d are supported by a transparent glass bell e which forms with the member b a complete enclosure for the annular members and the source of light. The bell e may be stepped to receive the annular members, and its lowermost portion may be frosted, or the member d may carry a frosted glass shell f, so as to diffuse the downwardly directed rays of light. The member b may comprise a lower portion b<1> of opal glass and an upper portion b<2> of opal, frosted, or mirror glass, the portion b<2> may be replaced by a downwardly reflecting extension q of the supporting hood k, or a flat or arched reflector, which may be coloured, may be inserted between the two portions b<1>, b<2>.
Patent GB-261135-A (GB)
Title: Improvements in or relating to mixing process and apparatus
IPC: C10L5/22
Filed: 1925-09-04
Abstract: 261,135. Smith, J. W. Sept. 4, 1925. Freely-flowing material mixed in conduits.- Apparatus for miixng finely divided solids, or liquids, in a stream of gas for making fuel mixtures for burners, blast furnaces &c., or other purposes, comprises a succession of mixing devices placed in a pipe line and each consisting of a crown of inwardly directed pointed deflectors of slightly helical formation, the deflectors may be arranged to rotate the stream in opposite directions. As shown in Figs. 2 and 3 a section is let into the pipe 12 comprising a part 11 formed in halves provided with flanges 18, 19 by means of which the insertion. is supported on a stand 20. The crown 28 is inserted between the flanges 14, 15 and comprises a casting formed with inwardly directed curved points 34 lying in the direction of the stream and helically curved so as to impart slight rotational movement to the stream. The form shown in Fig. 5 comprises stampings supported between flanges 15<1> in pipe lengths 12<1>, the members 33<1> having an opposite twist to the members 34<1>. The inner surface of the base of the crown is continuous with the inner surface of the pipe. The apparatus is described as applied to a plant for mixing a powdered fuel with air and comprising a container for the powder fitted with a rotary pocket feed.
Patent GB-1140437-A (GB)
Title: Testing semiconductor devices
Inventor: SANDBANK CARL PETER
IPC: G01R31/26
Filed: 1967-05-12
Abstract: 1,140,437. Electron microscopes. STANDARD TELEPHONES & CABLES Ltd. 12 May, 1967, No. 22151/67. Heading H1D. [Also in Division G1] A number of PN junctions in a single slice of semi-conductor material are tested by using the slice as the target in a mirror-type electron microscope and flooding the slice either with photons or with electrons provided by a ring cathode 15 so that induced voltages are set up in the P and N regions and then these induced voltages are measured by scanning the slice with a low-energy electron beam and picking up on an output lead 38 a signal representing the voltage at the instantaneous position of the scanning beam.
Patent GB-1517331-A (GB)
Title: Lamps for use in fog
IPC: F21S8/10
Filed: 1975-05-22
Abstract: 1517331 Polarized foglamps ROBERT BOSCH GmbH 22 May 1975 [24 Oct 1974] 22167/75 Heading F4R A vehicle foglamp comprises a curved (parabolic) mirror with a light source at the focus, means (an interference polarizer with zig-zag-shaped steps) being provided for polarizing light issuing from what is) in use, the upper half of the mirror whilst light issuing from the lower half of the mirror is either polarized in a different direction or leaves the lamp without polarization. Reference has been directed by the Comptroller to Specification 1,421,404.
Patent GB-668532-A (GB)
Title: Improvements relating to the alkylation, arylation and aralkylation of organo-silicon compounds
IPC: C07F7/18
Filed: 1948-08-23
Abstract: Organo silicon compounds are prepared by substituting an alkyl, aryl or aralkyl group in a silane having an alkoxy, aroxy or aralkoxy group attached to the silicon atom, the said substitution being effected by reacting the silane with an alkali metal and an alkyl, aryl or aralkyl halide, and decomposing the organic alkali compound of the alcoholate or phenolate type formed prior to separation of the desired organo silicon compound.  The organic alkali compound may be decomposed by adding silicon tetrachloride to the reaction product or carrying out the reaction in the presence of silicon tetrachloride. A hydrohalide, an acid anhydride or other acidic substance may also be used to decompose the organic alkali compound.  The above reaction may be carried out in the presence of an anhydrous inert gas and/or in a solvent. The reaction may be repeated to effect further substitution of an alkyl, aryl or aralkyl group for an alkoxy, aroxy or aralkoxy group.  The alkyl, aryl or aralkyl halide may contain one or more halogen substituents, e.g. methyl or ethyl bromide, ethylene chloride or chlorobenzene may be used.  Aromatic radicals which may be introduced are the tolyl, naphthyl and retenyl radicals. In the examples, phenylethoxysilanes and ethyltriethoxysilane are prepared.
Patent GB-747857-A (GB)
Title: Improvements in warning devices
IPC: B64D45/00
Filed: 1952-09-04
Abstract: 747,857. Warning devices on aircraft. LYLE, W. W. Sept. 3, 1953 [Sept. 4, 1952], No. 22265/52. Class 4. The handle of a pilot's control member on aircraft incorporates mechanism to give a tactile warning of certain operating conditions by connecting it to sensing apparatus such as a Mach meter. The handle is moulded in two parts 10a, 10b which are formed with longitudinally extending slots 18 to receive blades 19 urged inwardly of the handle by springs 20. A tube 21, formed with cam faces 27, is rotatably mounted by bearings 23 on a fixed central tube 22 and is attached to a worm wheel 24 driven by an electric motor (not shown) through a worm 25. The motor is energized automatically when predetermined operating conditions arise so that the tube 22 is rotated to cause in and out pulsating movement of the blades 19. In an alternative arrangement (Fig. 1, not shown), the handle is formed with longitudinally extending cavities filled with flexible tubes connected to a common source of pressure fluid through a solenoid-operated control valve so that under certain conditions the tubes are caused to distend with a pulsating movement.
Patent GB-791773-A (GB)
Title: Improvements in or relating to machines for grinding, polishing or brushing parquet flooring, or other flat surfaces
IPC: A47L11/162
Filed: 1955-08-03
Abstract: 791,773. Floor grinding and polishing machines. RUUD, E. Aug. 3, 1955 [Aug. 27, 1954], No. 22276/55. Classes 60 and 138(1). A machine for grinding, polishing or brushing parquet floors or other flat surfaces has a grinding or polishing, or brush, disc 4 disposed forwardly of a driving motor 8 so that the machine housing can be pushed under overhanging objects, the housing having a part 2 to form a linear or twopoint abutment which steadies the machine against bodily rotation when it contacts a wall or other obstacle. The disc 4 may be covered with abrasive paper and secured to a shaft 3 which runs in ball-bearings and is connected by a V-belt 6 to the motor 8, the latter being secured by screws to slots in a part 1 of the housing to enable the belt 6 to be tightened. To prevent displacement of the motor from affecting the balance of the machine, casters 10 are mounted for vertical adjustment in brackets 11 adapted to be adjustably connected to the machine frame by a number of screw threaded holes 9. The motor is provided with a pair of side handles (not shown) for manoeuvring the machine and is fitted with a fan 12 which exhausts the dust from the lower part 2 of the housing and blows it through a flexible hose 13 into a filter 14. The lower part 2 of the housing is extended laterally, instead of conforming concentrically with the grinding disc 4, so that the forward edge of the part gives good support at widely spaced points against the skirting board. Alternatively, the part may have a recess so that only the corners engage the skirting board or it may be made narrow and fitted with lugs at the corners.