baber/WOPTO huggingface dataset:
Patent GB-476298-A (GB)
Title: Improvements in the manufacture and production of leuco esters of dyestuffs of the anthraquinonyl-azole series
IPC: C09B9/02
Filed: 1936-06-02
Abstract: m -Anthraquinonyl anthraquinone - oxazoles and -thiazoles containing in the anthraquinonyl radicle a primary or secondary amino group in o-position to the carbon atom of the azole ring are converted to their leuco sluphuric esters by treatment with sulphur trioxide or agents supplying the same in the presence of a tertiary base and a metal under mild conditions.  Up to four sulphuric ester groups may be introduced, and the initial materials should contain no unprotected amino group other than that above referred to.  The products give red or blue shades on the usual fibres.  In examples: (1) 1-amino-2-anthraquinonyl - a  - monochlor - 2<1>.3<1> - anthraquinoneoxazole is treated with sulphur trioxide and chlorsulphonic acid in pyridine in presence of copper powder, and the tetra-sulphuric ester so obtained may be converted to a disulphuric ester having a greater affinity for the fibre by treating with dilute acetic acid and sodium nitrate or during dyeing; anthraquinonyloxazoles containing a chlorine or bromine atom in 1- or 1<1>- or 3- or 3<1>-position, or other, substituents such as alkoxy, cyano, alkylamino or acylamino, may also be used; (2) 1-amino-2-anthraquinonyl-2<1>.3<1>-anthraquinoneoxazole is treated with chlorsulphonic acid in pyridine in presence of copper powder; the chlorsulphonic acid may be replaced by sulphur trioxide or mixtures of sulphur trioxide and sulphuric acid or chlorsulphonic acid, or chlorsulphonic acid esters and iron powder may replace the copper; the tetrasulphuric ester may be converted to a trisulphuric ester by standing with dilute acetic acid, a conversion which may be accelerated by leading in oxygen or adding sodium nitrite or another oxidizing agent and the disulphuric ester may be prepared by intensifying such treatment; the di- and tri-esters may also be prepared by allowing an acidified solution of the tetraester to stand at elevated temperature, or during dyeing; (3) 1-amino-2-anthraquinonyl - 2<1>.3<1> - anthraquinonethiazole is converted to its tetra-sulphuric ester as in (1) and this may be converted to the di-ester; the thiazole used may be replaced by its 4-ethoxy derivative; (4) 1-amino-2-anthraquinonyl - 4<1> - ethoxy - 2<1>.3<1> - anthraquinoneoxazole is treated as in (2).  The 1 - amino - 2 - anthraquinonyl - a -monochlor - 2<1>.3<1> - anthraquinoneoxazole is obtained by treating 2-amino-3-hydroxyanthraquinone with sulphuryl chloride in nitrobenzene, and heating the monochlor body so obtained with 1 - aminoanthraquinone - 2 - carboxylic acid chloride in nitrobenzene.  1 - Amino - 2 - anthraquinonyl - 2<1>.3<1>-anthraquinonethiazole is obtained by condensing 1-aminoanthraquinone-2-carboxylic acid chloride with 2-mercapto-3-aminoanthraquinone.  Specification 298,545, [Class 2 (iii)], is referred to.
Patent GB-1305927-A (GB)
IPC: B66F9/10
Filed: 1970-04-01
Abstract: 1305927 Changing wheelbase TOWMOTOR CORP 1 April 1970 [14 April] 1969 15407/70 Heading B7D [Also in Division B8] The wheelbase of a masted lift truck is variable by means of hydraulic rams. As shown, the main portion of the truck is provided with a pivotally mounted mast assembly 22 and is supported at one end by steerable drive wheels 18 and at the other end by wheels 32 mounted on arms which are longitudinally extendible and retractable by hydraulic rams 40. The wheels 32 and the wheels 18 are each provided with selective brakes so that operation of the rains 40 can be utilized either to retract the load on fork 30 towards the truck or to pull the entire truck body forward towards the load. The fork 30 is mounted on a side-shift mechanism.
Patent GB-1182471-A (GB)
Title: Organo Block-Silicon-Containing Block, Organopolysiloxane Copolymers and methods for preparing the same
IPC: C08G77/442
Filed: 1967-04-04
Abstract: 1,182,471. Organosilicon containing block copolymers. GENERAL ELECTRIC CO. 4 April, 1967 [11 April, 1966 (3)], No. 15419/67. Headings C3P and C3T. Organo block, silicon containing block copolymers are prepared by a method which comprises forming a mixture in an aprotic solvent (e.g. tetrahydrofuran) of (A) a lithium terminated compound selected from: (I) an organolithium compound containing at least one Liatom attached to a Si-atom through an oxygen atom; (II) an organolithium compound of formula R m -N-(R<SP>1</SP>OLi) 3-m  in which R is a monovalent hydrocarbon radical, R<SP>1</SP> is a C 1-10  alkylene radical and m is 0, 1 or 2; (III) a polymer of an olefinically unsaturated monomer which has Li attached to a terminal carbon atom; and (B) a cyclic polysiloxane in which R1<SP>1</SP> is a monovalent organic radical free from aliphatic substituted halogen and is selected from monovalent hydrocarbon radicals, cyanoalkyl radicals and halogenated aryl radicals. After reaction of compounds (A) and (B) has been effected there is added to the reaction product a second cyclic polysiloxane having the same general formula as (B) but which is different from (B) and further reaction is effected. (I) may have the general formula in which each R<SP>111</SP> is a monovalent organic radical and X is selected from R<SP>11</SP>, OH, OR<SP>11</SP>, OLi, OSiR<SP>111</SP> 3 , A1H 4  and NR<SP>1111</SP> 2  in which R<SP>1111</SP> is the same as R<SP>111</SP> or is H, n is a whole number. Specific examples are (a) R<SP>111</SP> (1) = CH 3 , R<SP>111</SP>(2) = C 6 H 5  and X = C 4 H 9 , (b) both R<SP>111</SP> = CH 3 , X = OH and (c) R<SP>111</SP> (1) = CH 3 , R<SP>111</SP> (2) = C 6 H 5  and X = A1H 4 . (II) may have the formula (LiOC 2 H 4 ) 3 N; (LiOC 2 H 4 ) 2 NCH 3 ; or LiOC 2 H 4 N(CH 3 ) 2 . (III) may be a lithium terminated styrene homo- or co-polymer or a lithium terminated isoprene homo- or copolymer. The cyclotrisiloxane (B) may be hexamethylcyclotrisiloxane, trimethyltriphenylcyclotrisiloxane or cis- or trans- 2,4,6 -trimethyl - 2,4,6 - triphenylcyclotrisiloxane, The second cyclic siloxane may be trimethyltriphenylcyclotrisiloxane or hexaphenylcyclotrisiloxane. In general the products of the invention are crystalline elastomers.
Patent GB-296814-A (GB)
Title: Process for the precipitation (cementation) of copper
IPC: C22B15/00
Filed: 1927-06-09
Abstract: 296,814. Carpmael, A., (1. G. Farbenindustrie Akt.-Ges.). June 9, 1927. Precipitating.-In the precipitation of metallic copper from solutions by means of iron, the solution is agitated by means of a gas containing sulphur dioxide and oxygen, for example air containing a small proportion of sulphur dioxide, or waste gases from a plant for making sulphuric acid by the contact process.
Patent GB-283411-A (GB)
Title: Oar for rowing boats
IPC: B63H16/10
Filed: 1927-06-10
Abstract: 283,411. Kruse, G. June 10, 1927. Oars and rowing apparatus. - A bow facing oar comprises blade and shaft sec tions 1, 2 hinged to gether at 5, the shaft 1 being pivotally supported at 6 on a frame 7 pivotally mounted at 8 on the gunwale. The blade 2 is slidablv mounted in a forked collar 11 which is pivotally mounted at 10 on the frame 7.
Patent GB-396903-A (GB)
Title: Improvements in and relating to wall and other bracket-like tables
IPC: A47B5/00
Filed: 1932-06-01
Abstract: 396,903. Bracket tables. SPITZ, K., 104, Ottakringerstrasse, Vienna. June 1, 1932, No. 15524. Convention date, June 3, 1931. [Class 52 (iii).] A wall table or other bracket-like table 8 is supported by an arm 7 with a pivot 6 of approximately semicylindrical form slidably fitted in a slotted guide channel 2 which has at its upper end a circular enlargement 8<1> with a projection 9 forming an abutment for the rear edge of the pivot 6.
Patent GB-773433-A (GB)
Title: Improvements in or relating to tufter hook
IPC: D05C15/24
Filed: 1955-05-31
Abstract: 773,433. Sewing machines. AMERICAN SAFETY RAZOR CORPORATION. May 31, 1955 [July 14, 1954], No. 15556/55. Class 112. The tuft-receiving hook in a tufting machine comprises a forwardly extending finger portion 46, a nose 48 extending downwardly from the front end thereof, a neck portion 44 extending downwardly from the rear end portion thereof, and a channel 60 for a loop-cutting blade 70 extending rearwardly from adjacent the nose through the finger and neck portions, the channel being shorter than the blade so that the latter, when inserted, projects rearwardly from the neck portion. A tail 42 projects rearwardly from the neck and is received in one of two or more slots 22 in a bracket 2, the tail being secured by a grub screw and the bracket being mounted adjustably on a rocker arm in the machine. The hook consists of two platelike members 50, 52, the latter of which is formed with the blade-receiving slot. The rear end of the blade abuts a stop 80 provided on bracket 2.
Patent GB-774629-A (GB)
Title: Improvements in two-stroke cycle internal combustion engines
Inventor: KIEP JOHANN NIKOLAS
IPC: F02B25/00
Filed: 1955-05-31
Abstract: 774,629. Two-stroke engines ; valves. REMBOLD, V. May 31, 1955, No. 15608/55. Addition to 714,459. Classes 7 (2) and 7 (6). In a two-stroke engine as claimed in the parent Specification comprising a reciprocating cylinder 2, Fig. 1, with a cooling jacket 4 and exhaust ports 13, a fixed cylinder head 6 projecting into the cylinder and provided with an exhaust passage 7, and scavenging air and supercharging air chambers 9, 10, opening into the cylinder through ports 11, 12, controlled by ports 14 in the cylinder 2, an annular flange 18 on the cylinder 2 serves as the piston of an annular air pump 19 for the supply of scavenging air or supercharging air or mixture. In Fig. 1 the pump 19 is double-acting, drawing air in through a valve 22 and forcing compressed air out through a valve 23 into the supercharging chamber 10 on each stroke. The space below the piston 5 and cylinder 2 is closed by a plate 27 to form a pumping space from which air is forced into the scavenging chamber 9. In a modification the piston 18 forces air into chamber 10 on its upstroke and into chamber 9 on its downstroke. The cylinder 2 is driven through rods 17 from eccentrics on the crank-shaft as described in Specification 715,497. In Fig. 2 (not shown) the piston 18 is situated at the lower end of the cylinder 2 below the ports 14 and on its upstroke feeds the chamber 10 whilst on its downstroke it assists the piston 5 in feeding the chamber 9. The piston 18 may be detachably connected to the cylinder 2. Reference has been directed by the Comptroller to Specification 715,497.
Patent GB-582828-A (GB)
Title: Improvements in or relating to buttons
IPC: A44B1/12
Filed: 1944-08-17
Abstract: 582,828. Buttons. PARSONS, C. S. (Ludi & Cie.). Aug. 17, 1944, No. 15707. [Class 43] The cloth covering 5 of a button is drawn through an aperture in the button structure and is secured on the underside against retraction, e.g., by a pin 9, to present a ruffled cloth covering on the button face. The aperture may be formed in a cover plate 1 of the button structure and have a crimped edge 7 on barbs formed on which the covering 5 may be held. The covering 5 may be held in position by a back plate 3. The plate 1 may be flat or of dome or other shape and may be embossed.
Patent GB-762316-A (GB)
Title: Improved bosun's chair
Inventor: FRY PERCIVAL GEORGE STEEHEN
IPC: A47D13/10
Filed: 1954-05-27
Abstract: 762,316. Scaffolding cradles. NORTH THAMES GAS BOARD. June 20, 1955 [May 27, 1954], No. 15717/54. Class 20(2) A bosun's chair comprises a seat 2 supported by an angle frame 1 carrying a back 3 which acts as a guard and prevents the user from falling out backwards, and is provided near the front edge of the seat with a rigid suspension member 6 which passes between the user's legs and so prevents the user from falling out forwards. The suspension member 6 is welded to plate gussets 5 arranged in T shape and welded to the frame 1. The suspension member 6, terminating at its upper end in a hook 8 fitted with a safety catch 9 by which the chair is hung, is inclined backwardly so that the suspension point is vertically above the centre of gravity of the occupant and is provided with a helical ring guide 11 through which the suspension rope may be passed and with a cleat 10 to which the rope is fastened after adjustment. Helical rings 12 are fitted to vertical stays 4 to carry paint kettles or tool trays.
Patent GB-582111-A (GB)
Title: Improvements in or relating to means for permanently waving hair
IPC: A45D7/06
Filed: 1944-08-18
Abstract: 582,111. Heating by chemical action. HEXT, D. Aug. 18, 1944, No. 15796. [Class 64 (ii)] A sachet containing chemicals for use in hair waving comprises a non-metallic fluid proof bag, e.g., of regenerated cellulose, which is enclosed in an outer metallic bag, e.g., of metal foil. The complete sachet may itself be enclosed by a further bag of non-metallic fluid proof material.
Patent GB-800084-A (GB)
Title: Improvements relating to rotary cutting tool and method and apparatus for making the same
Inventor: BABBIT SETH MACREATH
IPC: B23Q15/00
Filed: 1956-05-22
Abstract: 800,084. Making fluted cutting tools. ECLIPSE COUNTERBORE CO. May 22, 1956, No. 15854/56. Classes 83 (2) and 83 (3). [Also in Group XXIII] A fluted tool such as an end mill is formed from prehardened tool stock in a single automatic grinding operation (Group XXIII), with a number of helical flutes, each with its finished cutting edge, the intervening grooves each being defined by a continuously curved surface leading from one cutting edge to the next. Each groove may be formed with a cylindrical surface a at the core of the tool.
Patent GB-129527-A (GB)
Title: Improvements in Differential Gearing for use on Cycle Cars and the like.
Inventor: GUNTON FRANK WILLIAM
IPC: B62D61/08
Filed: 1918-10-01
Abstract: 129,527. Gunton, F. W. Oct. 1, 1918. Differential gearing; transmission gear of invariable ratio.-Comprises an arrangement of differential gearing which is driven from one side of the vehicle and is especially suitable for twotrack, three-wheeled cycle-cars. The half-axles. 6 are driven through the differential gear 8, the housing 14 of which is fixed to sleeves 9, 10, rotating in bearings 11, 12, carried by the springs 13. The sleeve 10 is driven from the engine 19 through bevel or worm gear enclosed in a casing. 20 rotatably mounted on an extension of the bearing 12. The casing 20 is bolted to the anchor-plate of the brake for the road wheel 4, and has secured to it a casing 22 enclosing the driving shaft, this casing being supported at its front end in a boss 23 fixed to the chassis.
Patent GB-947521-A (GB)
Title: Improvements in combination positioner and controller for automatic fluid control systems
Inventor: PUSTER LOUIS MEDART
IPC: G05D23/12
Filed: 1960-05-05
Abstract: 947,521. Fluid-pressure servomotor systems. ROBERTSHAW-FULTON CONTROLS CO. May 5, 1960 [May 18, 1959], No. 15951/60. Heading G3P. A control system comprises a valve 10 connected to a pressure operated actuator 34<SP>1</SP>, means for regulating the pressure applied to the actuator including a flapper 88 and a nozzle 86 connected by a fluid line 100, 110 to a pressurized supply and to the actuator, a primary measuring element, such as a pressure thermometer 116,operatively connected to a flapper actuator 92, and feedback means comprising a first lever 78 carrying the flapper and the nozzle and a second lever 150 operatively connected for movement with the valve and engageable with the first lever. The pressure thermometer 116 causes actuation of a bellows 120 having an end wall 118 in contact with a spring-loaded rod 114 carrying the actuator 92 for the flapper 88 co-operating with the nozzle 86. The lever 78 is pivoted at 80 and the nozzle is fed with air through a restrictor 102 the downstream side of which also communicates through the conduit 110 the interior of a cap 18 surrounding the bellows 34<SP>1</SP> having an end wall 36 in contact with an adjustably spring-loaded valve spindle 46. When a temperature change causes movement of the flapper 88 towards the nozzle and hence an increase in the pressure on the bellows 36,the resulting movement of the valve spindle is conveyed to the lever 78 through a turnbuckle 166 and the lever 150, pivoted at 152, so that the flapper 88 moves away from the actuator 92 and hence from the nozzle. The decrease in pressure on the bellows 36 moves the valve spindle upwardly with consequent movement of the flapper towards the nozzle, this action being repeated until a point of balance in reached. This point may be adjusted by a screwed cap 134 for varying the spring load on the rod 114. A series of holes a, b, c, d &c. allows the position of a bolt 168 connecting the turnbuckle with the lever 150 to be changed so that the proportional band may be adjusted. To compensate variations in valve lift, a further series of holes a<SP>1</SP>, b<SP>1</SP>, c<SP>1</SP>, d<SP>1</SP> permits adjustment of the position of a screw 154 carried by the lever 150 to bear on an edge of the lever 78. The turnbuckle is connected to a trapezoidal plate 160 on the valve spindle by a U-shaped channel 160 provided with a vertical guide 169. The thermometer may be replaced by an orifice plate and a differential pressure transmitter. Alternatively, the pressures at opposite sides of the orifice plate may act in opposition on diaphragms carried by the ends of the rod 114. The flapper and nozzle may control the valve through a pneumatic relay and the action of the apparatus may be reversed by rotating an enclosure 32 for the rod 114 through 180 degrees.
Patent GB-1478007-A (GB)
Title: Indole derivatives and process for their preparation
IPC: C07D209/42
Filed: 1976-04-20
Abstract: 1478007 Substituted 3-carboxy-2-methylindol- 5-yloxyacetic acids and their esters MERCK PATENT GmbH 20 April 1976 [22 April 1975] 16001/76 Heading C2C The invention comprises compounds of formula and their physiologically acceptable salts, wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are each H or C 1-6  alkyl; R<SP>4</SP> is H or Me; and R<SP>6</SP> is Me, Ph, or ClC 6 H 4 . In examples, these compounds are prepared by (1) etherifying 5-hydroxyindoles; (2) esterifying acids; (3) hydrolysing to the acids the corresponding amides, nitriles or esters; (4) N- or alpha-substitution. Therapeutic compositions having activity with respect to cholesterol, triglyceride and uric acid levels, and inducing liver enzyme, comprise compounds of the above formula, and may be administered orally, parenterally or rectally.
Patent GB-989344-A (GB)
Title: Improvements in or relating to deaerating devices
IPC: F16K24/04
Filed: 1961-05-03
Abstract: 989,344. Centrifugal separators. M. CLAUSEN, [trading as DANFOSS VED ING. M. CLAUSEN]. May 3, 1961 [May 4, 1960], No. 16098/61. Heading B2P. A deaerating device, particularly for use in oil feed systems, comprises a vertical separating chamber 15, a cyclone tube 16 coaxially within the chamber, a fluid inlet duct 14 entering tangentially into the tube, a liquid outlet 17 from the space between the tube and the chamber wall and a gas outlet 22. The chamber is closed by a transparent cover 18 secured by a screw 19 surrounded by a helical spring 20 wound in the opposite direction to that of the rotation of the fluid in the tube 16. In Fig. 1, the device is located between an oil suction pump 9 and a pressure pump 10 and oil supplied through the inlet 14 and deaerated in the tube 16 flows over the top of the tube and is discharged through the outlet 17 whilst the separated air enters a recess 21 from which it escapes via the outlet 22. In modifications, Figs. 3 and 4 (not shown), the air escapes either along the thread of the screw 19 or through passages in the screw to a collecting chamber and thence into an outlet pipe.
Patent GB-837118-A (GB)
Title: Preparation of aliphatic monocarboxylic acids
IPC: C07C51/15
Filed: 1957-05-21
Abstract: Aliphatic monocarboxylic acids containing 3-30 carbon atoms are prepared by reacting an aluminium trialkyl, in which each alkyl group has 2-29 carbon atoms, with CO2 for a sufficient time to form the aluminium salt of the acid or acids produced, hydrolysing and/or acidifying the aluminium salt to form the free acid or acids, and recovering these.  Preferred conditions for the treatment with CO2 are: the use of a diluent; pressures from atmospheric to 3000 p.s.i.g.; and temperatures of from -80 DEG  to 180 DEG C.  The aluminium salt may be hydrolysed with an excess of an aqueous solution of a base, e.g. an alkali metal hydroxide, and the resultant aqueous phase acidified, e.g. with a mineral acid.  Excess aluminium trialkyl, if present in the reaction product mixture, may be removed by distillation if it is of low molecular weight; if it is of higher molecular weight, e.g. having an average of more than 4 carbon atoms per alkyl radical, the product mixture may be treated with air or oxygen at 20-100 DEG  C. and 0-1000 p.s.i.g. to convert the aluminium alkyl to the corresponding alcoholates; on hydrolysis the free alcohol is formed.  Higher aluminium trialkyls may be prepared by reacting ethylene with an aluminium trialkyl in which each alkyl group has 2-4 carbon atoms or with an aluminium alkyl hydride; or by reacting an aluminium alkyl with an olefin containing more carbon atoms than any of the alkyl groups-this method gives satisfactory yields only when the alkyl groups have 2-4 carbon atoms and the olefin has 8 or more.  The olefin displaces the low alkyl groups.
Patent GB-1172321-A (GB)
Title: Semiconductor Device and Method of Making Same
IPC: H01S5/32
Filed: 1967-04-07
Abstract: 1,172,321. Electroluminescence. RADIO CORPORATION OF AMERICA. 7 April, 1967 [25 April, 1966], No. 16161/67. Heading C4S. [Also in Divisions C1 and H1] An intrinsic or extrinsic gallium arsenide substrate with (100) or (111) major faces is lapped with alumina or silicon carbide particles, polished with sodium hypochlorite and a silk cloth, and etched before being clamped in a graphite boat in a quartz furnace tube. The tube is subjected to a non-oxidizing atmosphere of one or more of hydrogen, helium, and nitrogen while a solution in gallium of gallium arsenide and tellurium is placed in contact with the free face of the substrate at a solution temperature of 880-920‹ C. The solution first dissolves gallium arsenide from the wafer but as it cools deposits an epitaxial layer of gallium arsenide doped with Ca. 4 x 10<SP>18</SP> atom. cm.<SP>-3</SP> of tellurium. The solution is removed when it has cooled to about 400‹ C. After the surface of the epitaxial layer has been wiped, washed in boiling concentrated hydrochloric acid, lapped, polished and etched the wafer is replaced in the boat and a P-type epitaxial layer deposited using a solution in gallium of gallium arsenide and zinc applied at an initial temperature of 910-950‹ C. and removed at about 400‹ C. After further lapping, polishing and etching the structure may be subjected to a heat treatment at 900- 975‹ C. to diffuse zinc from the second epitaxial layer into the first to shift the location of the PN-junction. After removal (by lapping) of the substrate wafer (if this is not of high conductivity N-type material) an evaporated tin layer is applied to the surface of the N-type layer (with a substrate temperature of 550‹ C.) and coatings of nickel and gold then applied by electrodeless deposition to the surfaces of both layers. In a laser, parallel faces 10-50 mils. apart may be obtained by cleavage at (110) planes, the perpendicular sides (3-5 mils. apart) being sawn and roughened to prevent reflection. The diode emits light at Ca. 8,500 Š and may be operated at liquid nitrogen temperature or at room temperature. Reference has been directed by the Comptroller to Specification 1,021,783.