baber/WOPTO huggingface dataset:
Patent GB-763120-A (GB)
Title: New pyrimidine derivatives
Inventor: BOON WILLIAM ROBERT
IPC: C07D239/50
Filed: 1952-04-18
Abstract: The invention comprises pyrimidine derivatives of the general formula <FORM:0763120/IV(b)/1> wherein X is hydrogen or a C1-C6 alkyl group, Y is a C1-C6 alkyl group or X and Y together with the N atom form a heterocyclic ring, X1 is hydrogen or a C1-C6 alkyl group and Y1 is a C1-C6 alkyl group or X1 and Y1 together with the N atom form a heterocyclic ring.  They are prepared by the reduction of the corresponding derivatives of general formula <FORM:0763120/IV(b)/2> wherein Ar is an aryl group which may be phenyl or naphthyl and may be substituted, e.g. by one or more alkoxy, alkyl, halogen or nitro radicals; such compounds are described in the parent Specification. In examples: (1) 2,4 - bismethylamino - 5 - p - chlorobenzeneazo-6-aminopyrimidine is reduced by hydrogen in the presence of Raney nickel to 2,4-bismethylamino - 5,6 - diaminopyrimidine; (2) 2-methylamino - 4 - chloro - 5 - p - chlorobenzeneazo - 6 - aminopyrimidine is reacted with dimethylamine and the 2-methylamino-4-dimethylamino - 5 - p - chlorobenzeneazo - 6 - aminopyrimidine formed reduced by hydrogen to 2-methylamino - 4 - dimethylamino - 5,6 - diaminopyrimidine; (3) 2 - dimethylamino - 4-methylamino - 5 - p - chlorobenzeneazo - 6-chloropyrimidine is converted with ammonia to 2 - dimethylamino - 4 - methylamino - 5 - p-chlorobenzeneazo - 6 - aminopyrimidine which is then reduced to 2-dimethylamino-4-methylamino - 5,6 - diaminopyrimidine; (4) by using the appropriate starting materials compounds of the general formula <FORM:0763120/IV(b)/3> are similarly prepared in which Z is dimethylamino, morpholino, piperidino, diethylamino, butylamino, isopropylamino, ethylamino and propylamino; (5) 6-amino-5-p-chlorobenzeneazo - 2 - diethylamino - 4 - methylaminopyrimidine is reduced to 5,6-diamino-2-diethylamino-4 - methylaminopyrimidine; and (6) 6 - chloro-2 - ethylamino - 4 - methylaminopyrimidine is coupled with p-chlorobenzenediazonium chloride and the product converted first to 6-amino-5 - p - chlorbenzeneazo - 2 - ethylaminopyrimidine and then reduced to 5,6-diamino-2-ethylamino-4-methylaminopyrimidine.  According to the Provisional Specification the above defined alkyl groups may be replaced by any hydrocarbon radicals and the group NX1Y1 may be replaced by thiol or alkylthiol. Specification 763,044 also is referred to.
Patent GB-614147-A (GB)
Title: Improvements in ball caster
IPC: B60B33/08
Filed: 1946-07-10
Abstract: 614,147. Ball castors. THURSTON, A. P. (Ford Instrument Co., Inc.). July 10, 1946, No. 20611. [Class 52 (i)] A roller 19, mounted in fixed relation to the castor attachment means 10, bears on a castor ball 20 positioned in a rotatable carrier 30 by rollers. 35 contacting a diametrical plane of the ball.
Patent GB-429861-A (GB)
Title: Improvements in and relating to packing strips
IPC: E06B7/232
Filed: 1934-07-14
Abstract: 429,861. Packing-strips for windows. WABER, J. E., 87, H³tteldorferstrasse, Vienna. July 14, 1934, No. 20719. Convention date, April 17. [Class 20 (iii)] A packing-strip particularly suitable for sash windows is made from finely porous rubber coated with a layer of loose fibres in order to diminish friction. The fibres may be long or short, of vegetable, mineral, or animal origin. Particular fibres mentioned are cotton fibres, wool fibres, artificial silk fibres, hair, leather meal, and asbestos. The strips may be profiled and have thin tongue-like extensions of the profile. Specification 387,451, [Group VIII], is referred to.
Patent GB-189075-A (GB)
Title: Improvements in or relating to loaded electric conductors
IPC: H01B11/14
Filed: 1921-05-17
Abstract: 189,075. Western Electric Co., Ltd., (Western Electric Co., Inc.). May 17, 1921. Resistance furnaces.-A muffle-furnace has heating-elements 20 between the fire-clay muffle and the fire-brick, and around the fire-brick is a sheet-iron outer wall. The iron tube passing through the centre of the furnace is lined with copper. Reference has been directed by the Comptroller to Specification 165,416, [Class 37, Electricity, Measuring &c.].
Patent GB-820837-A (GB)
Title: A handling trolley for pushing and pulling motor vehicles into and out of the parking bays in multiple storey garages
IPC: E04H6/24
Filed: 1957-07-02
Abstract: 820,837. Handling road vehicles. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. July 2, 1957 [July 5, 1956; Sept. 11, 1956], No. 20824/57. Class 78 (4). A trolley for pushing vehicles in a mechanical garage has arms 9 which can be swung about pivots 10 to embrace the pairs of wheels on a single axle of the vehicle so that the vehicle can be pushed without lifting it. The arms 9 preferably carry rollers 16 and may be swung hydraulically or, as in the form illustrated, may be swung by worms 12 engaging worm sectors 11 and driven from a motor 15 through a torque-limiting coupling. The pivots 10 are preferably inclined so that the arms 9 move upwardly as they swing outwards and all supporting wheels similar to the wheels 3 may be mounted on an axle between the fore and aft arms 9 so that the trolley rises and falls at the same time as the vehicle when passing irregularities in the ground. Rollers 4 are shown guiding the trolley in a recess runway 5 in a parking stall or in the cage of a lift.
Patent GB-589819-A (GB)
Title: Improvements in hinges or clips
IPC: B42F13/00
Filed: 1944-10-26
Abstract: 589,819. Fastenings; hinges. STRANG, W. B. Oct. 26, 1944, No. 20834. [Classes 44 and 65 (ii)] A hinge or clip for attaching a lid or door A to a box or frame B, Fig. 2, comprises two main parts separate from the pivoted members, one of which E is a plate curled over at one edge to form a hook e and the other part C being a flat plate with one edge c<5> engaging the hook e together with a rib or like projection D forming a pivot located between the pivoted members A and B which causes the edge c<5> to bear against the inner surface of the hook e when the members A and B are closed. The projection D may be integral with either of the members C and E or may be entirely separate from them. The members C and E may extend all along the edge so as to form a watertight seal. The free or outer edge of the door is secured by a known type of toggle hasp F. A projection e<3>, Fig. 6, may be formed on the edge of the plate E to co-operate with a corresponding projection c<2> so that when they engage the edge c<5> is forced into the hook e. In a modification, the projection c<2> is dispensed with and the projection D co-operates with the projection e<3>. The part C may be attached to the part E by pins c<4>, Fig. 8, sliding in L-shaped slots e<4> formed in plates e<5> attached to the ends of the part E. When used for packing cases, the parts C and E may be provided with additional attachment flanges perpendicular to the ones shown to give greater strength.
Patent GB-1292775-A (GB)
Title: Temperature-compensated adjustment arrangement
IPC: H01G4/02
Filed: 1971-04-19
Abstract: 1292775 Screw-and-nut mechanism INTERNATIONAL STANDARD ELECTRIC CORP 19 April 1971 [9 Feb 1970 (2)] 20875/71 Heading F2Q In a temperature compensated lead screw arrangement comprising a base member 2, a fixed element 3 secured to the base member 2 and spaced therefrom, a shaft 4 constrained from rotation but arranged for axial movement towards and away from the fixed element 3 by rotation of a lead screw member 5 which is captive with the base member 2, and a nut 7 engaging a lead screw threaded portion 6 over a length short compared to the length of the screw threaded portion 6, the nut is fixed to the shaft 4 by means of a re-entrant member 8 coaxial with the shaft 4 and of a material of a different coefficient of thermal expansion from that of the shaft material. The shaft 5 may be connected to the screw threaded portion 6 at its centre or at one end thereof. In a vacuum variable capacitor shown in Fig. 2, a set 10 of concentric cylindrical capacitor plates is mounted on an end plate 11 of an evacuated envelope having a base member 12 at the opposite end of the envelope. A set of axially movable plates 13 is mounted on a plate 14 secured to a hollow shaft 15 having a re-entrant member 31 made of a material having a co-efficient of thermal expansion different from the material of shaft 15. Threads 34 on the member 31 are adapted to engage a lead screw. The member 31 has an adjustable screw-threaded connection 32 with the shaft 15 in order to vary the amount of differential expansion that can occur between them. In a modification, a threaded sleeve 6, Fig. 3, is secured at one end 50 to a shaft 5, the materials of the sleeve 6 and shaft 5 having different coefficients of expansion. Alternatively, the sleeve 6 and shaft 5 may be joined at a position intermediate their lengths.
Patent GB-337781-A (GB)
Title: Improvements in fishing tools for use in well boring operations
IPC: E21B31/20
Filed: 1929-07-03
Abstract: 337,781. Triggs, W. W., (Doheny-Stone- Drill Co.). July 3, 1929. Borehole apparatus.-A tool for removing broken &c. casings from wells comprises jaws mounted in inclined ways in a body and means acting on the jaws to cause them to move radially outwards into work-gripping position, such means being opposed by a spring. The hollow body 10 is provided with angularly-spaced recesses 21 with inclined and preferably curved inner walls 25 and curved upper walls 27; jaws 29, with serrated outer faces and with inner and upper walls complementary to the walls 25, 27, are arranged in the recesses 21 and are vertically movable therein. Inclined rods 32 may be provided as guides to the jaws, the lower ends of the rods engaging apertures in a ring 35 dowelled to the body and held by a nut 42. A sleeve 44 is slidable on the body, the jaws 29 projecting through apertures of corresponding form therein ; a pilot head 51 with an inclined face 53 is threaded to the lower end of the sleeve 44. A tube 59 is threaded to the pilot head and passes through the lower part of the body, the upper end of the tube being secured to a hollow piston 48 pressed by a spring 65. In use, the tool is lowered in the position shown in Fig. 2 until it enters the casing &c. w to be raised. The flushing fluid is then caused to depress the piston 48, either by building up the pressure of the fluid or by dropping a ball 64 so as to close the passage through the piston; depression of the piston causes downward movement of the sleeve 44 and jaws 29 whereby the latter are caused to grip the casing &c. w, and the tool is then pulled upwardly. If the casing &c. w cannot be moved, the supply of flushing fluid is cut off and .the tool lowered to disengage the jaws, the spring 65 completing inward movement of the jaws. The serrations on the jaws are preferably inclined thread-wise and opposite to the thread of the usual tool joints, whereby if the jaws cannot be released in the above manner, the tool may be rotated to thread its way out of the casing.
Patent GB-1450739-A (GB)
Title: Process for the preparation of aromatic di-and polycarbo- xylic acids
IPC: C07C63/00
Filed: 1974-05-10
Abstract: 1450739 Preparation of aromatic di- and polycarboxylic acids COAL INDUSTRY (PATENTS) Ltd 23 April 1975 [10 May 1974] 20903/74 Heading C2C The invention comprises a process for preparation of aromatic di- or polycarboxylic acids which comprises oxidizing an aromatic hydrocarbon/aldehyde resin. The oxidation may be carried out by (i) using oxygen under pressure in the presence of water and an alkali metal hydroxide, (ii) heating with a dichromate or (iii) reaction with nitric acid. Examples describe the preparation of naphthalene-1,8-dicarboxylic acid, a mixture comprising trimellitic, pyromellitic and mellitic acids and benzene pentacarboxylic acid, and pyromellitic acid by oxidation of, respectively, naphthalene and toluene-formaldehyde resins. Naphthalene - 1,8 - dicarboxylic acid may be isomerized using the conditions of the Henkel reaction to obtain naphthalene-2,6-dicarboxylic acid.
Patent GB-1457732-A (GB)
Title: Heating and cooling system
IPC: F24F11/06
Filed: 1975-05-16
Abstract: 1457732 Space heating and cooling systems; refrigerating AMERICAN AIR FILTER CO Inc 16 May 1975 [12 June 1974] 20953/75 Addition to 1457433 Headings F4U and F4H A space heating and cooling system as described in Specification 1,457,433 is modified in that the refrigerant/water heat exchanger 8 of each reversible refrigeration circuit is a coil-incoil heat exchanger.
Patent GB-796054-A (GB)
Title: Improvements in and relating to colour photographic processes
IPC: G03C7/00
Filed: 1953-07-29
Abstract: 796,054. Colour photographic processes FRAUNHOFER, H. VON., and COOTE H. E. July 28, 1954 [July 29, 1953], No 21050/53. Drawings to Specification. Class 98(2) For the production of colour separation records a negative multilayer film normally free from colour formers is exposed, developed, fixed, treated with a bleach to convert the uppermost silver image to a silver salt and then, in the manner described in Specification 795,186, contacted in the presence of hypo with a take-off film including a metallic sulphide to produce a silver sulphide image therein; the uppermost layer of the negative film is then removed and the procedure repeated to obtain a record in a second take-off film of the image of the intermediate layer; and the bottom layer, remaining untouched, serves as the third separation record. The process is further described in application to a negative film having a low melting point yellow filter layer beneath the uppermost blue sensitive layer whereby the latter may be removed when required with aid of hot water. The bleach concerned is described as being viscous. The images in the two take-off films may themselves be bleached and redeveloped so that all three records may be of silver.
Patent GB-300301-A (GB)
Title: Improvements in or relating to apparatus for making forgings
IPC: B21J9/18
Filed: 1927-08-10
Abstract: 300,301. Withers, J. S., (Smith, J. W.). Aug. 10, 1927. Eccentrics.-The ram 97 of a forging press is reciprocated from a shaft 92 by a pitman 95, the length of which may be varied to adjust the stroke by means of an eccentric bushing 93 provided with an adjustment device 94.
Patent GB-631945-A (GB)
Title: Improvements relating to the making of thermoplastic moulding pellets
IPC: B29C48/395
Filed: 1946-07-15
Abstract: Moulding-pellets of cellulose derivatives are prepared by mixing granular cellulose acetate, ethyl cellulose &c. with a plasticizer which is not a solvent therefor in such a way as to retain its granular character, drying the mix, still retaining its granular character, to remove all aqueous moisture in excess of 0.5 per cent, and feeding the material to a hot extrusion machine to form rods which are subsequently cut into pellets.  The granular material is mixed with plasticizer in batches in a tumbling mill, each bath being delivered to a reservoir from which the mixture is fed by a chute 18 to a drier.  The mixture falls in a thin stream on to inclined vibrating plates 20, 21 where it is exposed to radiant heat from lamps 22 and gradually moves towards the closed passage 25 leading to the hot extrusion machine in which it is plasticized by heat and homogerized by a screen 40, finally issuing as plastic rods 53.  The rods are guided down on to a conveyer 54, cooled by air blasts 58 and <PICT:0631945/IV (a)/1> <PICT:0631945/IV (a)/2> finally cut into pellets by a rotary cutter 62.  In an example a composition containing 72 per cent of acetylated cellulose (acetyl content 56 per cent) 14 per cent dimethyl phthalate, 14 per cent diethyl phthalate with pigment, if required, added up to 1.5 per cent of the batch, is mixed for 20-30 minutes (for a batch of 320 lb.), dried at 260 DEG F. and extruded &c.  In another example a composition of 89.6 per cent ethyl cellulose, 4.9 per cent butyl oleate, 4 per cent dibutyl phthalate, 1 per cent opal wax and 0.5 per cent diphenylamine with pigment, if required, is mixed and dried at 260 DEG  F. and extruded.
Patent GB-861037-A (GB)
Title: Improvement in the erection of tower cranes
IPC: B66C23/28
Filed: 1959-06-19
Abstract: 861,037. Erecting tower cranes; pulleys and tackle. TICHAUER, M. June 19, 1959 [Sept. 26, 1958], No. 21184/59. Classes 78 (2), 78 (4) and 78 (5). A balancing device 13, Fig. 1, comprising a weighted lever is connected to a tower crane mast element 12 to form an assembly to enable the element to be lifted and added to the mast structure by means of the crane hook 9, the distance between the centre of gravity of the element 12 and the assembly being equal to or greater than the minimum operational radius of the hook 9. As shown, Fig. 4, the mast head 5 can be raised to allow enough space for an opensided element to be added to the mast by holding a carriage 8 against a stop 36 so that a force applied to a rope 23 will urge yokes 29, 32, of a block and tackle towards each other thereby hoisting the mast head 5 by means of a rope 33. The device 13, which is attached to an element 12 by means of a hook bolt 18, Fig. 1, is subsequently detached from the element which has been placed on the mast, and suspended at its centre of gravity to enable it to be returned to the ground by means of the hook 9. Specification 853,096 is referred to.
Patent GB-531412-A (GB)
Title: Improvements in address printing machines
IPC: B41L47/24
Filed: 1939-07-21
Abstract: 531,412. Addressing-machines. ADREMA MASCHINENBAUGES. July 21, 1939, No. 21193. Convention date, July 23, 1938. [Class 100 (ii)] In an address-printing machine of the kind described in Specification 383,477 in which the holding-device 126 of the list is advanced step by step in the longitudinal direction and after each impression of the printing-plate is automatically and laterally displaced to and fro by an actuating rod 118 displaceable transversely to the longitudinal direction, the rod 118 is arranged to operate a lever 122 pivoted at one to the list-shifting plate 48 and connected by a link 127 to a crosshead 128 to which the holding- device 126 is adjustably secured The crosshead 128 is carried by parallel links 129 which are pivoted to a slide 130 adjustably secured to the plate 48 by means of a nut 133 and a bolt, a scale and indicator being used to adjust the setting. The slide 130 can be set so that the second impression may be staggered in the longitudinal direction relatively to the first impression. A cover plate 134 for the linkage is screwed to the plate 48.
Patent GB-281024-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P7/282
Filed: 1926-08-28
Abstract: 281,024. British Thomson-Houston Co., Ltd., Trutch, C. J. H., Peacock, J. V., and Nixon, L. R. Aug. 28, 1926. Exciting.- An electric motor 1, Fig. 1, fed from a constantseries supply has its excitation automati - cally varied so as to give decreasing torque with increasing speed, by using a separately excited field winding 2 and an opposing shunt field winding 4. both being adjustable by rheostats 3, 6. As a modification, a single field winding is connected across the motor armature in a circuit containing the source of separate excitation. In the modification shown in Fig. 2, the shunt winding 14 forms one component of the field of a regulating motor 12, the other component of which is a separately excited winding 13. A further modification achieves a similar result by the use of a balanced relay. Specifications 278,467 and 281,009 are referred to.
Patent GB-666034-A (GB)
Title: Improvements in or relating to wire working machines
IPC: B21K1/44
Filed: 1949-08-16
Abstract: 666,034. Forging nails and rivets. GUT, E. Aug. 16, 1949 [Dec. 2, 1948], No. 21284/49. Class 83 (iv). In a wire-working machine such as a nail, pin or rivet press, a ram slide 1 having one or more dies 4 is rockably supported between vertical guiding cheeks 2, 3 and actuated for reciprocation and rocking by cam discs 9, 12, respectively, the ram being rockable. to remove scrap from the wire end or to present a different die to the work. As shown, the cams 9, 12 are mounted on a main driving shaft 10, the " reciprocating" cams 9 engaging through rollers 8, the upper end of a pivoted arm 6 to which the ram 1 is pivoted on a pin 5. The " rocking " cam 12 engages one end of a pivoted lever 14 the other end of which bears on the free end of the ram 1 which is counter-urged upwardly by a spring 17. A rotatably adjustable eccentric 37 engages an upward extension of the arm 6 to limit the spring-urged rearward movement of the ram so that the die 4, when rocked into the initial swaging position passes close to the wire end to eject the presevered nail &c. and remove any scrap. The wire stock 20 is releasably clamped near the die by fixed and movable clamping members 211 and 21<SP>11</SP> respectively, and is fed by interengaging toothed segments 22, 23, each having replaceable wire-gripping inserts 25. The segment 22 is oscillated about a fixed pivot by a cam 28 on the shaft 10 and the segment 23 is moved into and out of gripping position for the feed by being connected to one arm of a bellcrank lever 30 which is actuated by a cam 31 on the shaft 10. The bell-crank lever 30 has an extension connected to the movable clamping member 21<SP>11</SP> and is arranged so that during swaging the wire is clamped by the members 21, with the feed segment 23 disengaged from the wire, and during the feeding movement of the segments 22, 23 the clamping member 21<SP>11</SP> is released from the wire end.
Patent GB-204028-A (GB)
Title: Improvements in electro-magnetic devices
IPC: H01H50/36
Filed: 1923-08-23
Abstract: 204,028. Western Electric Co., Ltd., (Assignees of Mead, E. D.). Sept. 18, 1922, [Convention date]. Magnets.-The core of an electromagnet or relay is stamped from a sheet of magnetic material into a blank having flat polar portions 23, 24 and an intermediate flat portion 20 which is swaged to a greater thickness than the polar portions. The blank is supported on a plate 50 which is provided with a pair of sliding blocks 51, 52; a second plate 56 co-operates with the plate 50. When the blocks 51, 52 are moved inwards together, the portion 20 of the core assumes the shape shown in Fig. 7.
Patent GB-278297-A (GB)
Title: Improvements relating to buckles
IPC: A44B11/24
Filed: 1927-08-15
Abstract: 278,297. Walker, Ltd., T., Walker, G. T., and Wood, H. H. Aug. 15, 1927. Buckles. - A lav band or keeper loop 3 is secured to an extension plate 2 carried by the buckle 1 by passing the flanged sides 4 of the plate forming the lay band through apertures cut in the extension plate, shoulders 5 on the lay band bearing against the plate. The non-adjustable end of the belt may be secured to the buckle by looping it over a bar carried between the ends 4 and stitching, or by a lever clip 8 pivoted in apertures 7 formed in the sides 4 of the lay band.