baber/WOPTO huggingface dataset:
Patent GB-691020-A (GB)
Title: Improvements in or relating to pyrimidine derivatives of therapeutic value and to the manufacture thereof
Filed: 1951-02-09
Abstract: The invention comprises 5-phenylpyrimidines of the general formula <FORM:0691020/IV (b)/1> wherein X is hydrogen, halogen, nitro, amino or acidylamine and Y is halogen or hydrogen and their acid addition salts.  They are prepared by (a) condensing an a -formylphenylacetic acid ester with guanidine to give a 2-amino-4-hydroxy-5-phenylpyrimidine which is chlorinated and aminated to give the 2 : 4-diamino compound; (b) introducing a nitro group into the phenyl nucleus of 2 : 4-diamino-5-phenyl pyrimidine to give 2 : 4-diamino-5-p-nitro phenyl pyrimidine which may be reduced and acetylated to give the p-amino and p-acetylamino compounds; (c) reacting a 5-phenylpyrimidine containing 2 : 4-dihydroxy, 2-mercapto-4-hydroxy, 2-ethylmercapto-4-hydroxy or 2 - amino - 4 - hydroxy substituents with phosphorus pentasulphide to give the 2 : 4-dimercapto derivative which is converted to the 2 : 4-diamino compound by reaction with ammonium or by the methods of Specifications 663,567, 671,927 and 684,759; or (d) condensing an a -formylphenylacetonitrile or its enol ether with guanidine.  In examples: (1)-(6) 2-amino-4-hydroxy-5-phenylpyrimidines are chlorinated and aminated to give the corresponding 2 : 4-diaminopyrimidines substituted in the 5-position by phenyl, p-chlorophenyl, p-bromophenyl, 3 : 4 - dichlorophenyl, m - chlorophenyl or m-bromophenyl groups; (7) 2 : 4-diamino-5-phenylpyrimidine is nitrated to give 2 : 4-diamino - 5 - p - nitrophenyl pyrimidine; (8) the product of (7) is reduced to give the p-amino compound; (9) the p-amino compound from (8) is acetylated to 2 : 4-diamino-5-p-acetamidophenylpyrimidine; (10) 2 : 4-dithiol-5-phenylpyrimidine is aminated to 4-amino-5-phenyl-2-thiol pyrimidine which is reacted with chloracetic acid to give 4-amino-2-carboxymethylthio-5-phenylpyrimidine which is further aminated to 2 : 4 - diamino - 5 - phenylpyrimidine; and (11) phenylformylacetonitrile methyl ether is treated with guanidine to give 2 : 4-diamino-5-phenylpyrimidine.  2 - Amino - 4 - hydroxy - 5 - phenylpyrimidines.  The 5-phenyl-, 5-p-chlorophenyl-, 5-p-bromophenyl-, 5-(31 : 41-dichlorophenyl)- and 5-m-chlorophenyl-, 2-amino-4-hydroxypyrimidines are prepared from the corresponding ethyl phenylacetate, ethyl formate and guanidine.  Specification 687,032 also is referred to.
Patent GB-119395-A (GB)
Title: Improvements in Oil Groove Cutting Devices.
Inventor: GILBERT BERNARD
IPC: B23B5/48
Filed: 1918-02-23
Abstract: 119,395. Gilbert, B. Feb. 23, 1918. Bearings and bearing surfaces.- Curved interrupted oil grooves are out in bearings, liners, &c., such as 47, by a tool 27 pivotally mounted on a boring head 10 and having means, such as the cam-ring 39, attached to or revolving with the work, for oscillating the tool 27 laterally, and also for varying the depth of the cut. The depth of the cut may also be adjusted by hand through a thumb-screw 18 and rod 17 attached to an arm 16 turning an eccentric bush on which the pivot pin 20 of the tool-holder 23 is mounted. The lateral movement is transmitted from the cam 39 to the holder 23 by the bell-crank lever 37, 29, and link 30. The automatic variation in depth of cut is obtained by a pawl 31 engaging a toothed collar 21 between the two eccentric portions of the pivot pin 20. A spring 50, mounted on an adjustable sliding bar 42, keeps the roller 38 at the end of the lever 37 in engagement with the cam 39.
Patent GB-1142436-A (GB)
Title: Methods of starting up boilers
Inventor: ILLIES GUNTHER
IPC: F22B35/14
Filed: 1967-01-23
Abstract: 1,142,436. Raising steam in forced flow boilers. SULZER BROS. Ltd. 23 Jan., 1967 [4 Feb., 1966], No. 3287/67. Heading F4A. The economizer, evaporator and optionally the superheater heating surfaces of a oncethrough forced flow boiler 1 are filled with feed water prior to the ignition of the firing system, which feed water has been preheated, as by auxiliary steam in heat exchanger 19, to a temperature between 10‹ and 20‹ C. less than the saturated steam temperature at the start up pressure. This reduces the start up period of the boiler. Alternatively the feed water preheater may be directly fired.
Patent GB-1496692-A (GB)
Title: Process for the preparation of ceph-2-em compounds
IPC: C07D501/04
Filed: 1975-01-27
Abstract: 1496692 Ceph-2-em derivatives CIBAGEIGYAG 27 Jan 1975 [5 Feb 1974] 3362/75 Heading C2C Compounds I (R is 1-7C alkyl, 2-7C alkenyl, 2-7C alkinyl, or heterocyclyl, bonded to the sulphur via a ring carbon atom, which contains 1-4 ring N atoms and optionally a S or O atom and which may be substituted by 1-4C alkyl; R<SP>a</SP> 1  is H or an amino protective group R<SP>A</SP> 1 ; R<SP>b</SP> 1  is H or acyl or R<SP>a</SP> 1  and R<SP>b</SP> 1  together denote a divalent amino protective group; and R 2  is H or a radical R<SP>A</SP> 2  which together with the -COO- grouping forms a protected carboxyl group) and salts thereof are prepared by reaction of a compound II (Y is OH or esterified OH) with a compound R-SH; with the proviso that when using a starting material II where Y is OH or esterified OH, other than CF 3 COO, the reaction is carried out in the presence of an optionally protonic Lewis acid; followed where necessary by conventional chemical modifications.
Patent GB-793926-A (GB)
Title: Improvements relating to the preparation of dialkyl esters of terephthalic acid
IPC: C07C69/82
Filed: 1957-01-31
Abstract: Dialkyl esters of terephthalic acid are prepared by passing a continuous current of a mixture of terephthalic acid, an aliphatic alcohol containing not more than 4 atoms per molecule and sulphuric acid, at a pressure sufficient to maintain the alcohol in the liquid state, through a reaction space at a temperature of 100-200 DEG  C. in such a way that turbulence is set up in the mixture, at least in the first part of its passage.  The turbulence may be retained for only a third part of the passage of the reaction mixture through the reaction space, in which case a wide tube, fitted with a narrower entrance part, in which the turbulence may be easily effected, may be used.  Baffles or perforated plates may be used, or a pulsatory feed, in order to intensify the turbulence.  The reaction mixture is generally passed through the tube for less than ten minutes, preferably 1-3 minutes, and about 20 per cent sulphuric acid, by weight of the terephthalic acid is preferably used.  Suitable strengths of the sulphuric acid are, e.g. 50 to 90 per cent. Pressures up to 50 atmospheres, preferably about 25 atmospheres, are used.  Esters of higher alcohols may be obtained from the esters resulting from this process by reacting them with higher alcohols. Examples are given of the esterification of terephthalic acid with methanol by passing the reaction mixture through (1) a spiral reaction tube, by means of a pulsatory feed, or (2) a spiral reaction tube by means of a pulsatory feed and then through a wider tube, without a pulsatory feed.
Patent GB-823388-A (GB)
Title: Improvements in closure members for high pressure vessels
Inventor: LONDON JOSEPH CLARE
IPC: F16J13/02
Filed: 1956-02-03
Abstract: 823,388. Closures for resisting fluid pressure. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. Jan. 17, 1957 [Feb. 3, 1956], No. 3475/56. Class 123(1) A closure for a vessel subjected to high internal pressure, for example, the valve chest of a steam turbine, consists of an inner cover 3 and an outer cover 3a which are assembled on the vessel and define a chamber 2 between them. The inner cover 3 is a sliding fit within the vessel portion A and is retained by a split annular key 4 which engages in a groove formed internally in the portion A and is held therein by a clamp ring 5 which may be provided with bolts 9 to draw the cover upwardly into initial engagement with the sealing surface 8 of the key. The outer cover 3a is secured by bolts 10. The space 2 is connected by a pipe (not shown) to a source of pressure which is lower than that in the vessel, for example, to the exhaust end of the turbine, so that the inner cover is only subjected to the pressure difference between the interior of the vessel and the space 2.
Patent GB-582207-A (GB)
Title: Improvements in or relating to drawing tools
IPC: B43L7/10
Filed: 1944-02-24
Abstract: 582,207. Protractors ; beam compasses.. WESSEN, G. A. Feb. 24,. 1944, No. 3482. [Class 97 (iii)]. A drawing appliance comprises a set square mounted on a board having a paper sheet thereon, the set square being mounted to slide along a guide rail which is adjustable ; the set square may be provided with marks indicating angles and also with an adjustable pin and apertures for a pencil whereby arcs of circles may be drawn. Fig. 1 shows a set square having angle marks terminating in apertures 1, 2 and also with a slide adjustable along a guide 5, the slide being provided with a needle 4 adapted to penetrate a sheet of paper mounted on a supporting board and apertures 3 at varying distances for a pencil point, whereby arcs of circles may be drawn. Fig. 8 shows a set square 20 having a part 31 slidable along a rail 25 which is engaged by screwed studs 23, 24 carried by the board 22 and penetrating a paper sheet. The rail 25 may be released from one or other of the studs and swung about the other stud, whereby the set square is set at various angles and parallel lines at that angle drawn on the paper as the set square moves on the guide rack 25.
Patent GB-447218-A (GB)
Title: Improvements in carburetters for aircraft
IPC: F02M1/00
Filed: 1935-02-04
Abstract: 447,218. Spray carburetters. FARMER, G. H., Sunnydale, Shamrock Street, Derby. Feb. 4, 1935, No. 3554. [Class 7 (iii)] During inverted flying, a flat m on the float k closes an outlet h through which normally fuel flows to a chamber g leading to the fuel nozzle c, fuel being supplied through a small orifice h<1>, and vents d2 n, are closed by ball valves d<3>, n<1>. Specification 447,216 is referred to.
Patent GB-347322-A (GB)
Title: Improvements in and relating to lighting appliances
IPC: F21V5/02
Filed: 1930-02-03
Abstract: 347,322. Shop window &c. lamps. HOLOPHANE, Ltd., Holophane House, Elverton Street, Vincent Square, London.-(Dorey, W. A.; Newark, Ohio, U.S.A.) Feb. 3, 1930, No. 3650. [Classes 75 (ii) and 75 (iv).] Overhead lamps; lantern fronts.-A shop window or like lamp comprises an electric lamp bulb 4 the socket 3 of which is carried by a laterally extending vertical and preferably diffusing partition 2 which divides a closed housing 1 into a narrow front wiring compartment and a long rear chamber the bottom of which is formed by a prismatic cover-plate which is dished to receive the bulb and is adapted to concentrate downwardly directed light into a rearwardly slanting beam of moderately limited lateral spread. A spherical reflector 5 may be mounted above the bulb with its centre at the centre 6 of the light source, the reflector being provided with a ventilating hole 8 and carried by a yoke 9 provided with a baffle-plate 10. The upper and front walls of the housing may be of corrugated metal 11 and the front wall may be provided with ventilation holes 12, 13. The prismatic cover - plate comprises a dished upper part 14 having a smooth upper surface and a lower surface provided with concentric prisms, and a flat lower part 15 having a smooth lower surface and an upper surface provided with parallel refracting prisms, the part 14 being provided with smooth pyramidal sides which are cemented to the part 15. The reflector 5 may be cut away at 7 to allow some light to fall on a flat inclined diffuse reflector 18 which reflects downwardly on to a refracting plate 16 having a smooth outer surface and an inner surface provided with parallel refracting prisms. A number of such lamps may be mounted in a row with adjacent ends of the housings omitted so that stray rays of light may pass through the prismatic plates of adjacent sources whereby a substantially uniform distribution of light may be obtained when only a few of the bulbs are switched on. Specifications 301,281, [Class 75 (iv), Lamps &c., Kinds &c. of], and 347,571 are referred to.
Patent GB-1459243-A (GB)
Title: Photographic silver halide products and processes
IPC: G03C8/08
Filed: 1974-01-28
Abstract: 1459243 Photographic silver halide material treated with tetraaza macrocyclic ligand POLAROID CORP 28 Jan 1974 [29 Jan 1973] 03763/74 Heading G2C A photographic material comprises a support bearing a photo-sensitive silver halide layer and, either in the layer (see Example I-IV) or capable of being applied to the layer before development, a macrocyclic ligand having 4 electron donor atoms and having the Formula:- where each X is a carbon chain of at least 2 carbon atoms. The ligand may be applied to the layer after exposure and before development (see Example V). X maybe -(CH 2 ) 2 -, -C(CH 3 ) 2 - CH 2 -C(CH 3 )=, -C(CH 3 ) 2 -CH 2 -CH(CH 3 )-, or -(CH 2 ) 3 -. The material may be a colour diffusion transfer material (see Example I-III) or a silver salt diffusion transfer material and may contain an additive colour screen. In Example I a magenta dye developer is associated with a bluesensitive silver halide layer and in Example III a cyan dye developer is associated with a bluesensitive silver halide layer.
Patent GB-857893-A (GB)
Title: Improvements in or relating to quick-release boxes suitable for parachute harnesses
IPC: B64D17/32
Filed: 1959-02-03
Abstract: 857,893. Strap fastenings. AUTOFLUG GERHARD SEDLMAYR G.m.b.H. Feb. 3, 1959 [Feb. 3, 1958], No. 3834/59. Class 44. In a quick-release box having a plurality of plungers 13 for releasably engaging members to be interconnected and a rotary and axially slidable main spindle 3 serving pursuant to axial movements to move all the plungers from their engaged positions into their retracted positions and to allow them to become restored to their engaged positions and pursuant to its rotary movements to lock the plungers in their engaged positions and to free them for movement in a releasing direction, the main spindle is movable into an "inserting position", a "locked position" and a "releasing position" and means are provided whereby the main spindle is prevented from being moved directly from any one of its predetermined positions to an earlier position in the sequence of positions necessary for effecting a release operation. As shown, in which the box provides for releasable engagement with four strap lugs, the spindle is provided with a control disc 6, a guiding member 7 which is non-rotatably, but axially movable with the spindle 3, and a safety disc 8 which is rotatably and axially movable with the spindle 3 and which in the position shown in Fig. 8 provides abutments for the plungers 13. Forked arms of the member 7 engage flats on the plungers to prevent rotation thereof. A spring-loaded detent pin 19 engages a groove 24 or 25 on the spindle 3, the grooves being spaced apart by a projection 26, Fig. 1, and connected at the ends by axial grooves 27, 28. Groove 25 is formed with locking surfaces 29 and 30, Fig. 3, separated by a step 31, and a locking surface 33. Groove 24 is formed with locking surfaces 34, 35, Fig. 2, lying in axial alignment with surfaces 33 and 29 respectively of groove 25. In operation, with the box in locked condition, the pin 19 engages the locking surface 30 and a step 31 and thus prevents anticlockwise rotation of the spindle 3 by the disc 6. Depression of the plungers 13 is prevented by the disc 8. Upon clockwise rotation of the disc 6 through 90 degrees, the pin 19 abuts against the surface 33 and allows the disc 6 to be depressed and the plungers 13 retracted against springs 14 by the member 7, the pin then being traversed by the groove 28 into engagement with surface 34 of groove 24. Return movement of the spindle 3, outwardly is blocked by engagement of the pin 19 by a step on the spindle but the disc 6 can be rotated in a clockwise direction through about 135 degrees to bring the pin 19 into engagement with the surface 35 thereby to allow movement of the spindle 3 outwardly to restore the plungers to their original positions. In this position of the spindle 3, the disc 8 is disengaged from the plungers which are free for snap engagement with the lugs after which the disc 6 may be rotated through 45 degrees only in the clockwise direction to the fully locked position in which the pin engages the step 31.
Patent GB-414680-A (GB)
Title: Improvements in or relating to photographic sound recording apparatus
IPC: G11B7/00
Filed: 1933-02-08
Abstract: 414,680. Valve amplifying circuits. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Feb. 8, 1933, No. 3854. Convention date, Feb. 16, 1932. [Classes 40 (iii) and 40 (v).] Relates to sound-recording apparatus of the type in which alternating currents corresponding to sound waves (which currents may be predistorted, e.g. by volume-level equalization) are used to produce a photographic record in any usual manner, and in which the average exposure and/or average width of the exposed track on the photographic surface, for a length representing several cycles of the alternating currents, is also controlled by means of a relatively slowly varying bias voltage set up in a control circuit with which is associated a device for limiting the magnitude of the bias voltage. According to the invention, the limiting device consists of a device of which the impedance changes rapidly at or about some definite value of applied voltage, and is connected in shunt with the control circuit. The limiting device is preferably a rectifier of the copper oxide type. In the arrangement shown, a portion of the microphone currents applied to the input terminals 1 passes to a valve 2, the output of which, amplified at 18, controls a recording-device comprising a Kerr cell 15, which is connected to a battery 16. Another portion of the microphone currents passes through a transformer 3, the secondary of which is connected to a control circuit which includes a rectifier 4 and a filter 5, 6, 7 for suppressing high frequencies. The rectifier produces a slowly varying voltage in the circuit. Passing over fixed and variable resistances 8, 9, the rectified currents are delivered to the biaslimiting device. This comprises a rectifier 11, connected together with a resistance 10 and a battery 12 in shunt with the control circuit. A resistance 13 is connected to the rectifier 11 and to another battery 14 as shown, and a bias voltage for the grid of the amplifier 2 is tapped off at 21 from the resistance 13, whilst another tapping at 22 provides a bias potential for the Kerr cell 15. At the ends of the resistance 8 there is a voltage which varies continually in accordance with the volume of the sounds being recorded. The voltage of the battery 12 is such that so long as the voltage across the resistance 8 does not exceed a predetermined limit, no current can flow through the branch 11, 12, the voltage drop along the resistance 13 varies continually, and the bias voltage applied to the Kerr cell varies accordingly. When however the voltage supplied caross the resistance 8 exceeds the determined limit, current flows through the rectifier 11 and the resistance 10 in the direction opposite to that shown by the arrow A, and the Kerr cell bias voltage remains practically constant. Instead of applying the limited voltage tapped off from the resistance 13 to the Kerr cell, in order to vary the position of the zero line on the record, it may serve the same purpose by controlling a shutter or influencing the current in the recording lamp.
Patent GB-1385643-A (GB)
Title: Herbicidal compositions
Filed: 1973-01-25
Abstract: 1385643 Methabenzthiazuron compositions RHONE-POULENC SA 25 Jan 1973 [28 Jan 1972] 3889/73 Heading ASE Herbicidal compositions and methods of combating weeds utilize as active ingredients a combination of chlortoluron of formula: with methabenzthiazuron in a weight ratio of between 30:70 to 55:45.
Patent GB-201502-A (GB)
Title: Improvements in fumigating devices for the protection of draught-animals
IPC: A01M13/00
Filed: 1923-02-09
Abstract: 201,502. Habl³tzel, E. Feb. 9, 1923. No Patent granted (Sealing fee not paid). Vaporizing by combustion.-A device for protecting draught animals from annoyance by flies and the like comprises a casing which is suspended from the pole of the vehicle and within which fumigating material is burnt. The fumigating material is so supported that excessive heating of the casing is prevented, and the lateral dimensions of the casing correspond substantially to those of the pole. Referring to Figs. 1 and 2 the casing a supported from the pole D by the strap R and toothed springs c contains an inner member f holding a fumigating cartridge p. Apertures b, g permit access of air to the burning cartridge and escape of the fumes produced. The frontal wall h of the inner member is prolonged to create a space i between that member and the casing, excessive heating of which may be further prevented by an asbestos lining n. A spring k and latch m hold the inner member in position in the casing. In the construction shown in Fig. 6 the inner member comprises two parallel horizontal rods b connected by a plate c and supporting a number of U-shaped bands a along which the cartridge is laid. A pin s cooperating with an angular slot in the casing holds the inner member in position, and extensions g, h, together with a spring r, prevent undue heating of the outer casing. In another construction the inner member assumes the form of a worm on which the cartridge is wound. In the form shown in Fig. 11 the inner member is provided with lugs w which form a number of communicating chambers within which the cartridge may be extended, or fibrous fumigating material may be burnt.
Patent GB-155145-A (GB)
Title: Improvements in discharge controls for jigs and like machines
IPC: B03B5/24
Filed: 1920-02-09
Abstract: 155,145. Thompson, W. P., (Elmore, G. H., and McLean, H. L.). Feb. 9, 1920. Jigs.-In a jig in which a discharge valve for the heavier material is controlled by a float sup ported at the upper level of the heavier material the float is completely shielded so that the surrounding material cannot reach its sides or upper surface. In the form shown, a ratchet-wheel 32 is mounted on the axle of a rotary discharge valve 4, and a pawl 38 carried by an oscillating lever 36 is adapted to engage with the teeth of the wheel 32 or to be raised 'out of engagement therewith according to the position of a float 22 which is adjustably connected to the pawl and is loosely mounted in a vertical cylinder 20. The materia to be treated is fed into a hopper 52, and the heavier material reaches the valve 4 through an adjustable gate 7, while the lighter material passes out over a fixed outlet 6 and a de-watering plate 17, the water being returned to the hutch 10 Fine material settling in the hutch is discharged through an outlet 11. In a modification the ratchet mechanism is dispensed with and the rotary valve 4 is replaced by a hinged valve the position of the upper edge of which is controlled bv the float.