baber/WOPTO huggingface dataset:
Patent GB-268521-A (GB)
Title: Improvements in locking pins, dowel pins, or similar pegs
IPC: F16B19/02
Filed: 1926-03-01
Abstract: 268,521. Guest, Keen, & Nettlefolds, Ltd., and Farrow, G. W. March 1, 1926. Drawings to Specification. Pins, dowel.-Metal dowel pins which are driven into holes in metal members to secure them together have circumferential or helical grooves. The pins may have threads of the buttress type, Taper pins are rolled from cylindrical wire with tapered dies.
Patent GB-511926-A (GB)
Title: Improvements in the process for treating rubber and products obtained thereby
IPC: C08K5/00
Filed: 1939-02-20
Abstract: 511,926. Vulcanizing rubber. UNITED . STATES RUBBER CO. Feb. 20, 1939, No. 5673. Convention date, Feb. 25, 1938. [Class, 70] [Also in Group IV] Rubber or the like is vulcanized in the presence of an accelerator comprising a heterocyclic mercapto compound having the nuclear structure where R is hydrogen or a substitute. radical. Preferably there is a double bond in the 3-4 position and there may also be a double bond in. the 1-2 position. The heterocyclic nucleus may be condensed with a carboxylic ring to form the nuclear structure Examples of such compounds are : 4-mercapto pyrimidine ; 4-mercapto-6-methyl pyrimidine ; 4-mercapto 5-methyl pyrimidine ; 4-mercapto-6, 6 diethyl pyrimidine ; 4, 6-dimercapto pyrimidine ; 2, 4 -dimercapto pyrimidine ; 4- mercapto dihydropyridmidine ; 4-mercapto tetra hydropyrimidine ; 4-mercapto-2-methyl quinazoline ; 4-mercapto-2-dodecyl-quinazoline; 4-mercapto- 2-phenyl quinazoline ; 4-mercapto-2, 6 dimethyl quinazoline ; 4-mercapto dihydro quinazoline ; 4-mercapto-N-methyl dihydroquinazoline ; 4- mercapto-8-ethoxy quinazoline; and 4-mercapto-5, 6-naphtho pyrimidine. In examples, (1) 4-mercapto.-quinazoline is prepared by the following procedure : 30 gms. of 4-oxyquinazoline and 48 gms. of phosphorous pentasulphide are ground together and placed in a flask with 300 c.c. of xylene. The reaction mixture is refluxed for 3 hours using an oil bath at 155C. and is filtered hot. The residue is boiled for 1 hour with 100 c.c. concentrated hydrochloric acid, diluted with water and again filtered. The yellow residue is dissolved in 10 per cent. sodium hydroxide, the solution filtered and the compound is precipitated by addition of dilute hydrochloric acid. After drying the product is recrystallized from boiling alcohol. (2) 2, 4 dimercapto quinazoline is prepared as follows : 5.5 gms: of 2, 4 diketotetrahydroquinazoline and 16 gms. of P 2S 5 are ground together and refluxed in xylene as in example 1 for 6 hours ; the reaction mixture is filtered hot the residue is boiled for one hour with 75. c.c. of concentrated hydrochloric acid, then water is added and the solution is removed by filtration. 'The yellow residue is dissolved in hot 10 per cent. sodium hydroxide; after filtration the product is separated from the filtrate by acidifying with dilute hydrochloric acid ; the yellow precipitate is washed with water and finally with petroleum ether. (3) The zinc salt of 4-mercapto quinazoline is prepared as follows: 16.2 gms. of 4- mercapto quinazoline is dissolved in 200 c.c. of water containing 4 gms. of sodium hydroxide ; 25 gms. of zinc nitrate hexahydrate dissolved in 66 c.c. of water are added ; a yellow precipitate is formed and is filtered off, washed with hot water and air dried. The compounds may be used in conjunction with other accelerators, e.g. aldehyde-amines, guanidines, guanidine salts, dithiocarbamates, xanthates and mercaptobenzothiazoles.
Patent GB-704436-A (GB)
Title: Improvements in or relating to fluid pressure braking systems
IPC: B60T13/58
Filed: 1952-03-05
Abstract: 704,436. Fluid pressure brakes. BENDIX AVIATION CORPORATION. March 5, 1952 [March 9, 1951], No. 5777/52. Class 103(1) In a vacuum servo operated hydraulic brake system for tractor-trailer vehicle combinations as shown in Fig. 1, the trailer brakes 16 are arranged to be applied on the first movement of the pedal 60 by the closing of a switch 52 which energizes a solenoid operated valve 36, thus allowing the pressure operative in a regulator valve 32 to be transmitted by conduits 38, 40 and 44 to relay valve 21 of known type which admits atmospheric air to the trailer brake cylinder 18 which is of the vacuum suspended type. The trailer brakes are thus applied in advance of the tractor brakes which are of known hydraulic type, the pressure applied by a master cylinder 54 being boosted by a vacuum servo unit 48. The regulator valve 32, shown in detail in Fig. 3, which is the same as that described in Specification 550,686 comprises a self-lapping valve, the valve elements 132, 138 of which are adjustable by a hand-set member 146 controlling the position of rod 130 to produce a definite pressure in chamber 108, the pressure being chosen to suit particular road conditions so that the brakes may be applied without skidding. This pressure then becomes the maximum operative to control the brakes at the relay valve 21. In the arrangements shown, apart from the initial advance application of the trailer brakes, both tractor and trailer braking pressures are subsequently controlled by the valve 58, there being a two-way shuttle valve, shown in Fig. 6, fitted at 42. In another arrangement described an advance pressure increase is maintained at the trailer brakes right up to the maximum pressure obtainable. The system described above clearly has advantages over a system such as that described in Specification 629,225 in that there is no lag in the normal application of the tractor brakes, although there is still an advance given to the trailer brakes.
Patent GB-108460-A (GB)
Title: Improvements in Testing or Determining the Hardness of Metals and other Substances.
Inventor: BOYELLE-MORIN GEORGES
IPC: G01N3/48
Filed: 1917-04-24
Abstract: 108,460. Morin, G. Boyelle-. April 25, 1916, [Convention date]. Slide-rules.-In connection with apparatus for ascertaining the relative hardness more especially of metals by means of the impression producible by a ball of superior hardness, it is stated that the hardness numbers on the Brinell scale are inversely proportional to the square of the diameters of the impressions made in the specimen and in a comparison piece of known hardness by the same blow. A correction may be applied for the fact that the Brinell numbers are proportional to the surfaces of the spherical impressions, and is taken account of in a slide-rule having, on the fixed part, scales h<1>, h<2> for hardness numbers and resistance in kilograms per square millimetre respectively, and, upon the slide, a scale of diameters of impressions obtained upon the block of known metal.
Patent GB-1381141-A (GB)
Title: Paper coating
IPC: B41M7/00
Filed: 1972-02-08
Abstract: 1381141 Cellulose propionate composition EASTMAN KODAK CO 8 Feb 1972 [8 Feb 1971] 5787/72 Addition to 1,282,480 Heading C3F  A composition for coating paper products consists of a solution containing: (a) from 10 to 25 parts of a cellulose propionate having an acetyl content of from 0 to 4À5% by weight, of an hydroxyl content of from 4À4 to 12% by weight, a propionyl content of at least 35% by weight and a viscosity of from 0À02 to 20 seconds as herein defined; (b) from 12À5 to 30 parts by weight of water in isopropanol.
Patent GB-915407-A (GB)
Title: Apparatus for the continuous polycondensation of diol esters of terephthalic acid
IPC: C08G63/78
Filed: 1961-02-16
Abstract: <PICT:0915407/III/1> Bis-(beta-hydroxyethyl)-terephthalate is continuously polycondensed to polyethylene terephthalate by introducing it, via a pipe 1, into a reaction vessel 2 slightly inclined to the horizontal and sub-divided by weirs into a plurality of chambers each provided with a stirrer vane 3.  The ethylene glycol liberated by the polycondensation is discharged via a column 7 packed with vitrified dished rings and having a reflux condenser 8 at the top.  Any bis-(betahydroxyethyl)-terephthalate and other oligomeric constituents entrained with the ethylene glycol are trapped in the column 7 and returned to the reaction vessel 2 whilst ethylene glycol vapours are discharged from the top of column 7 and condensed in a cooled pipe 9 which is connected to a vacuum pump.  Polyethylene terephthalate is discharged from the reaction vessel 2 by a worm 4.ALSO:<PICT:0915407/IV(a)/1> Bis-(beta-hydroxyethyl)-terephthalate is continuously polycondensed to polyethylene terephthalate by introducing it, via a pipe 1, into a reaction vessel 2 slightly inclined to the horizontal and sub-divided by weirs into a plurality of chambers each provided with a stirrer vane 3.  The ethylene glycol liberated by the polycondensation is discharged via a column 7 packed with vitrified dished rings and having a reflux condenser 8 at the top.  Any bis-(betahydroxyethyl)-terephthalate and other oligomeric constituents entrained with the ethylene glycol are trapped in the column 7 and returned to the reaction vessel 2 whilst ethylene glycol vapours are discharged from the top of column 7 and condensed in a cooled pipe 9 which is connected to a vacuum pump.  Polyethylene terephthalate is discharged from the reaction vessel 2 by a worm 4.
Patent GB-987069-A (GB)
Title: Substituted benzimidazoles
IPC: A61K31/00
Filed: 1962-02-15
Abstract: The invention comprises compounds of the general formula <FORM:0987069/C2/1> (in which R is a thiazolyl, isothiazolyl or thiadiazolyl radical, either unsubstituted or C1- 5 alkyl-substituted, R1 is a hydrogen atom, a C1- 5 alkyl or C2- 5 alkenyl group or an acyl group, and R2 is an alkoxy, alkylthio, aryloxy or arylthio group) and non-toxic acid addition salts of those compounds in which R1 is not an acyl group, pharmaceutical and veterinary preparations and animal feedstuffs containing them, and their preparation by (a)-for compounds in which R1 is a hydrogen atom-reacting a compound of the formula <FORM:0987069/C2/2> (in which Y is a nitro or amino group, one R2 is an alkoxy, alkylthio, aryloxy or arylthio group, and the other R2 is a hydrogen atom), with RCOOH or a derivative thereof, reducing the product when it contains a nitro group, and treating the resulting o-aminoanilide with an acid, optionally followed by conversion to the free base or an acid addition salt, or (b)-for compounds in which R1 is a C1- 5 alkyl or C2- 5 alkenyl group or an acyl group-reacting an alkali metal derivative of the corresponding compound in which R1 is a hydrogen atom with an appropriate alkylating, alkenylating or acylating agent, optionally followed by conversion to an acid addition salt when R1 in the product is an alkyl or alkenyl group. The compounds of the invention are anthelmintics and may be administered orally in the form of pharmaceutical or veterinary preparations (e.g. boluses and liquid drenches) containing them together with a diluent or carrier, as a constituent of animal feedstuffs or feedstuff additives, or in drinking water.
Patent GB-138459-A (GB)
Title: Improvements in or relating to the pointing of bars prior to drawing them
IPC: B21C5/00
Filed: 1919-03-10
Abstract: 138,459. Flather, G. D. March 10, 1919. Forging. - m a - chines; drawing.- Bars are pointed prior to drawing, by a machine having a vice and a bell - mouthed die and means for forcing one towards the other. In the machine shown, the vice is stationary and comprises two wedge jaws 2 with springs 5 to open and a lever 6 to close them. The bell-mouthed die 12, Fig. 4, is reciprocated by cranks 9 driven by an electric motor at 20 through a one-revolution clutch device. As the die returns to the right, the rod 15 strikes an adjustable abutment 16 and ejects the pointed bar, and an adjustable cam 28 on the gear 17 moves the lever 29, which, acting through the spring 30 and lever 23, opens the clutch 22 and stops the machine. The spring 30 allows the lever 23 to be moved, to close the clutch 22, by a treadle 27 and lever 26. The die may be stopped in such a position that it may serve as a gauging-stop for the work; or the bar 15 may be projected for this purpose by a spring abutment, or by a wedge forced between the bar 15 and abutment 16 by means connected to the handle 6 as this is moved to open the jaws 2, the springs 5, in this modification, serving to close the jaws. Other arrangements of stops may be employed, and if the die is fixed while the vice reciprocates, the extractor bar 15 is also reciprocated. The die may reciprocate continuously, and the vice jaws may be replaced by pivoted pawls or other gripping-means.
Patent GB-1095101-A (GB)
Title: A ventillating system for collecting and removing waste gas or particles emitted from a source
IPC: B22D45/00
Filed: 1966-02-10
Abstract: 1,095,101. Confining and removing dust &c. in industrial processes. SVENSKA FLAKTFABRIKEN A.B. Feb. 10, 1966 [Feb. 27, 1965], No. 5946/66. Heading F4X. A ventilating system for the removal of fumes or solid particles arising from a source 1 such as the melt flowing from a pouring ladle into a mould 3 comprises a hood which is connected to a blower duct 5 and an evacuation duct 12, the air from the blower being directed at high velocity by means of guide means 8 to pass close by the source 1. The high velocity air carries the impurities in a path defined by the arrows 18 into a chamber 10 leading to the evacuation duct 12. The entrance to the chamber 10 comprises a wall 11 perforated over its whole surface. The air flow is said to form a curtain 13 shielding the system from ambient air.
Patent GB-324833-A (GB)
Title: Improvements in means for supporting posts for tennis-nets and for other purposes
IPC: A63B71/02
Filed: 1929-02-23
Abstract: 324,833. Gooch, A. D., and Wisden & Co., Ltd., J. Feb. 23, 1929. Ground anchors.-A post, which may be a tennis net post, football goal post, aerial mast, clothes line post &c., is removably secured to the ground by means of a flat plate B resting on the ground and provided with upstanding lugs E having bearings to receive trunnions C fixed to the foot of the post.. An adjustable strut G connects the post to the base plate, which is recessed at F to receive the lower end of the post.
Patent GB-613865-A (GB)
Title: Paper or paper-like containers with re-inforced ends
IPC: B65D3/30
Filed: 1946-02-26
Abstract: 613,865. Containers. STUART, K., and STUART, E. R. B. Feb. 26, 1946, No. 6013. [Class 66] A container has a body formed from a sheet 10 of paper &c. the two end-edges of which have reversely bent internal flanges clamped against the sheet 10 by " C " sectioned metal reinforcing rims 16 and 18. The flanges have tabs 12 and 14. The sheet 10 is bent and its overlapping side-edges are secured together. The tabs 12 and 14 are then bent at right angles to the body wall and paper &c. ends are fitted against the inner faces of the tabs. and secured thereto as by stapling or stitching. One end may have a metal-bushed aperture receiving a screw-plug. The body may be made by winding the paper &c. spirally.
Patent GB-588953-A (GB)
Title: Improvements relating to the propulsion of watercraft
IPC: B63H1/36
Filed: 1945-03-12
Abstract: 588,953. Propellers. HOTCHKISS, D. V. March 12, 1945, No. 6095. [Class 114] A propeller comprises a segmental diaphragm 1 of rubber sheeting, canvas or the like, one edge being clamped between two members constituting an arcuate frame 2, leaving the trailing edge free to permit flexure to the action of sea-waves, oscillatory or reciprocatory motion. Bodily movement of the propeller to the left results in flexure of the diaphragm 1 to the curved position shown in Fig. 2, conversely movement to the right will flex the diaphragm 1 to the opposite side, whilst from a rocking movement about axis N (Fig. 1), sinsusoidal flexure will result, as indicated by the dotted outline in Fig. 3. In Figs. 7, 8 a boat 4 is equipped with horizontal propellers 1, 2 supported by shaft 4, turnably mounted for steering purposes in tube 5. The vessel is about to rise at its forward end to wave W flexing diaphragm 1 of the forward propeller downwards, the water strikes the diaphragm in the direction DC, creating a reactive thrust and propelling the vessel in the direction FD. When the vessel rolls both diaphragms 1 assume a sinusoidal flexure as in Fig. 3. In another arrangement, spring means are combined with the propeller to ampliiy the pitch, both being attached to an actuating lever (or tiller) to induce an oscillatory motion. In a further arrangement the propellers are mounted in a vertical plane and are simultaneously reciprocated towards and away from the sides of the vessel by crank means.
Patent GB-1244155-A (GB)
Title: A construction kit and method of building using the kit
Inventor: EDMONDSON RONALD
IPC: E04C2/40
Filed: 1967-08-17
Abstract: 1,244,155. Panels &c, building structures. PLASTIERS Ltd. 13 Aug., 1968 [17 Aug., 1967; 7 Feb., 1968 (2)], Nos. 37891/67; 6143/ 68 and 6144/68. Headings E1B and E1W. A hollow open-ended panel 91 (Fig. 2) having its two side walls 93 shaped to form one or more recesses extending the length of the panel is provided along each side wall with a channel 95 on one edge facing inwardly of the panel and an outwardly projecting rib 94 on the other edge, the channel and rib being such that when two panels are disposed coplanar and side by side the channel on one panel can receive a rib on the other panel to latch the panels together against movement in the plane of the panels. Walls, floors, ceilings and roofs are formed from such panels which are so latched together by inserting into the space 97 formed by the recesses in the adjacent side walls one or more locking members which fit into the space and prevent unlatching of the panels, the locking members being of considerably less cross-sectional area than the space. As shown, the panels which typically are formed of extruded synthetic plastics material have side walls with two parallel half cylinders of semi-circular cross section and are locked together by tubular members 96 or a member 100 of metal or plastics which. may be in the form of two or more short lengths or may extend the length of the panel. The spaces 97 as well as the panel interiors may be filled with concrete or another material providing strength or heat and/or sound insulation during or after insertion of the locking members. Wires 101 may be embedded in the infill material, particularly for roofs, ceilings or floors when the wires are anchored by tying to members embedded in the walls of the building. Also for roofs, ceilings or floors panels can be combined with and supported by girderlike spanning units 151 (Fig. 6) of synthetic plastics or metal, at least the ends of which rest on walls, these units comprising a central element 153 for mating with panels 141, upper and lower tubes 152 and connecting arms or webs 154. The tubes 152 may be infilled or may encase steel strengthening bars 155. For curved ceilings or roofs the panels, locking members and spanning units may be curved along their lengths. As shown in Fig. 6, the side walls of the panels may form shallow V-troughs, the space formed between two such side walls being of rhombic cross section and receiving a cruciform locking member (see also Fig. 3, not shown). In a modification (Fig. 4, not shown), the bottom of the V may be replaced by a semi-circular portion and the corresponding arms of the locking member modified to seat in this portion. Fig. 5 (not shown) shows a panel in which the side wall recess comprises in cross section both a semicircular central portion and flanking shallow V-troughs, the locking member being a tube with oppositely extending fins. Fig. 1 (not shown) depicts a panel with a single semi-cylindrical recess in its side walls.
Patent GB-291850-A (GB)
Title: Process for the preparation of easily soluble derivatives of metaaminobenzoic acid esters
Filed: 1927-03-04
Abstract: 291,850. Ellis, G. B., (Chemical Works formerly Sandoz). March 4, 1927. Salts of m-aminoberzoic acid alkyl esters with alkylsulphonic acids are prepared by interaction of the two components in equimolecular propertions, or by double decomposition in suitable solvents of soluble salts of m-aminobenzoic acid esters, e.g. hydrochorides, hydrobromides or sulphates with alkali and alkaline earth metal salts of alkylsulphonic acids. The products possess anµsthetic properties; they are readily soluble in water to form solutions which are stable on boiling. Examples are given of the preparation of salts of m-aminobenzoic acid ethyl, n-propyl and isobutyl esters with methane and ethanesulphonic acids. m-Aminobenzoic acid n-propyl and isobutyl esters are obtained by heating m-nitrobenzoyl chloride with n-propyl and isobutyl alcohol respectively and reducing the resulting m-nitrobenzoic acid esters with iron filings and acetic acid.
Patent GB-428717-A (GB)
Title: Improvements in or relating to folding seats
IPC: A47C4/14
Filed: 1934-02-26
Abstract: 428,717. Folding chairs. DAVIS, H. G., 53, Bath Terrace, Gosforth, Northumberland. Feb. 26, 1934, No. 6160. [Class 52 (ii)] In an X-frame folding chair in which the upper ends of the rear legs A are pivoted to the front of the seat B and the front legs C are pivoted to the rear of the seat, the rear legs consist of a U-shaped metal prop, and pass through elements D pivotally secured to the front legs. In the position of use, stops E on the legs A bear against the elements D. The latter may consist of rings with shanks rotating in the legs C, and the stops E may consist of rings secured to the legs A.
Patent GB-817531-A (GB)
Title: A stable phenylazo-diaminopyridine:sulphonlyl-thiourea complex
IPC: C07D213/72
Filed: 1958-02-26
Abstract: The invention comprises a molecular complex of 2 : 6-diamino-5-phenylazopyridine and 4-aminobenzenesulphonyl thiourea in the molecular proportions 1 : 2 and the preparation of this complex by reacting the two components in a molecular ratio of 1 : 2 in a hot, water-miscible reaction medium.  Suitably the reaction medium is methanol, ethanol or dioxan.  The product is used as an antibacterial and an sthetic agent for example in the treatment of infections of the urinary tract.
Patent GB-1076831-A (GB)
Title: Improvements in and relating to variable reactive impedance devices
Inventor: JOHNSTONE GEORGE GORDON
IPC: H03C3/18
Filed: 1964-02-14
Abstract: 1,076,831. Frequency modulation; transistor oscillator circuits. BRITISH BROADCASTING CORPORATION. Feb. 15, 1965 [Feb. 14, 1964], No. 6383/64. Headings H3R and H3T. An oscillator comprises a series resonant circuit 18, 19 in the emitter circuit of a transistor 16 feeding through transistors 21, 22 a centretapped inductor coupled with the coil 18 of the series tuned circuit, and also, through a further transistor 28, feeding back its input so that oscillations are generated of mean frequency determined by the circuit 18, 19, but, on modulation being applied in push-pull to the transistors 21, 22, the oppositely acting feedback from the two halves of the inductor 25 acts differentially on the tuned circuit 18, 19 to produce frequency modulation. One or more square law diode 41 and resistor 42 series circuits, using different types of diodes, may be connected across the modulation input to counteract centre frequency shift of the oscillations and second harmonic distortion. To eliminate centre-frequency shift the D.C. and A.C. impedance in the modulation circuit must be equal, and to this end the modulation is applied in series with resistors 43 shunted by capacitors 44. The modulation sensitivity may be made independent of modulation frequency by a capacitor 46 shunted across the modulation input by a switch 45.