baber/WOPTO huggingface dataset:
Patent GB-301748-A (GB)
Abstract: 301,748. Chome, M. E. Dec. 3, 1927, [Convention date]. Grates. - The fire space f is surrounded on all vertical sides but one by substantially horizontal bars f, the remaining side being formed by a wall provided with an outlet flue k. The bars are of flat form, their upper faces making an angle a with the vertical which is approximately 90‹. Their inner edges lie on a straight line such as l, m, the angle b between which and the vertical is less than 30‹, whilst the angle c between the normal to the line l, m, and the under faces of the bars is also less than 30‹. Preferably, as shown the faces of the bars are horizontal and the line l, m, on which their inner edges lie is vertical. The bars may be of straight, curved, or polygonal form; they may, for example, be U-shaped, with their ends adjacent the sides of the flue k. The top bar, is at a higher level than that of the lower edge of the surface of the fuel in the mouth of the flue k, the width of which is substantially equal to that of the wall in which it is formed. The grate is fed from a hopper t.
Patent GB-170496-A (GB)
Title: Improvements in sharpeners for tailors' chalk, crayons, pencils or the like
IPC: B43L23/06
Filed: 1920-10-26
Abstract: 170,496. Solway, J., Niblett, F. S., and Peet, E. Oct. 26, 1920. Pencil sharpeners.-In a sharpener for tailors' chalk, crayons, pencils, &c. of the type having a series of transversely - disposed cutters located in spaced relationship, the cutters 7 are formed from a sheet of metal bent to V-shape and provided with a number of slots extending across the apex, the material between the slots being bent inwardly to form upstanding cutting edges. The cutter-member is secured to a body member which may be of sheet metal bent to the shape shown, the end pieces 2, 3 being formed separately from or integrally with the sides 4, and cut to V-shape to accommodate the cutting-member. Particles of chalk &c. removed bv the cutters fall into the receptacle through the slots, and may be removed through an aperture 5 in the end piece 2. The device may be provided with holed flanges for securing to a table, and a removable drawer to catch the shavings.
Patent GB-799896-A (GB)
Title: Improvements in or relating to axial-flow compressors
Inventor: PAYNE NIGEL EDWARD
IPC: F01D9/04
Filed: 1955-10-21
Abstract: 799,896. Axial-flow compressor bladed stator casings. ROLLS-ROYCE, Ltd. Oct. 4, 1956 [Oct. 21, 1955], No. 30223/55. Classes 110 (1) and 110 (3). A stator for a multi-stage axial-flow compressor comprises a tubular unsplit casing 10, an assembly of axially-spaced rows of stator blades 21 and spacer rings 22 between the rows of blades, being disposed within the casing, the blades having at their root ends axially- and circumferentially-extending platforms 28 which interlock at their axially-spaced edges with the spacer rings to retain the blades radially in position, each of the spacer rings being made in a plurality of part-circular sections and each part-circular section being individually secured in position in the casing. The stator rings 22 are made in three part-circular sections 22a, 22b, 22c each section being of channel section with thickened portions at the ends and at its centre and bushes 23 being screwed into the thickened portions. The part-circular sections are secured to the casing 10 by means of screws passing through the casing into screwed bores in the bushes 23. The blade platforms 28 are formed with flanges 29 which engage in peripheral grooves in the side faces of the spacer rings 22. Retainer strips 31 are secured between the adjacent ends of the partcircular sections such as 22a, 22b shown in Fig. 4, the strips being secured by means of dowel pins 32. The strips extend axially and engage notches 35 in the next spacer ring 22 the strips being cut away where they extend across the platforms 28 of the intermediate row of stator blades. The flanges 29 of the blade platforms 28 across which the retainer strips extend are also cut back, the retainer strips thereby providing abutments to prevent circumferential displacement of the blades. The flanges 23a of the bushes 23 at the ends of the part-circular sections 22a, 22b, 22c are formed with flats which are engaged by the strips 31 to prevent rotation of the bushes. The end of each strip 31 also engages a notch in the flange 23a of a bush 23 at the centre of an adjacent part-circular section thereby preventing rotation of this bush. The partcircular sections of adjacent spacer rings are staggered circumferentially. Specification 622,895 is referred to.
Patent GB-289760-A (GB)
Title: Pressure gauges
IPC: G01L7/16
Filed: 1927-11-10
Abstract: 289,760. Schrader's Son, Inc., A., (Assignees of Wahl, J., and Melzer, 0.). April 30, 1927, [Convention date]. Pneumatic tyre pressure gauges. -Comprises a casing, a pressure responsive member moving an indicating member and means carried by one of the members for adjusting their normal relative positions after the gauge parts are assembled in the casing. The casing B is closed at one end which is provided with a rectangular slot through which passes a flat graduated rod C to the other end of which is riveted a cup-shaped guide member C<1>. The piston D comprises a screwed block d through which passes an engaging screw d<5>, a force-fitted cap d<7> clamping a cup leather d<4> and also a packing d<6>. A coupling J is force-fitted over the open end against a packing k. Under the closed end of the casing is a cupshaped washer G between which rod and a flange on the part d is located the gauge spring E. A bent spring strip located between the washer G and the end of the casing frictionally grips the rod C. The gauge assembled as shown, without the foot F, is subjected to a known pressure. If this pressure is not indicated correctly the rod C is moved relatively to the piston by manipulating the screw d<5> until the pressures agree. The foot F with tyre valve depressor f and packing f<1> is then screwed on to the bottom of the gauge.
Patent GB-1033303-A (GB)
Title: Arrangement for regulating synchronous machines, more especially turbogenerators excited through rectifiers
IPC: H02P9/10
Filed: 1963-07-31
Abstract: 1,033,303. Automatic voltage control. SIEMENS-SCHUCKERTWERKE A G. July, 31 1963 [July 31, 1962], No. 30429/63. Heading G3R. [Also in Division H2] A regulator controlling the excitation of a synchronous machine operates in dependence upon the rotor angle, and has at least proportional action and differential action members, means being provided by which a positive differential signal is rendered effective only when the said angle exceeds a predetermined value. As shown, a regulator 2 comprises a proportional action member 3, an integral action member 4 and a differential action member 5. The output voltage of the generator 1 is vectorially compared in a device 7 with the voltage of an auxiliary generator 6 to give an output signal W which is proportional to the rotor angle; the signal W, together with an adjustable reference signal S, is applied to a desired value comparator 8 the output from which is applied over the members 3, 4 and an adding member 10 to the control grid of a rectifier 11 supplying the excitation current of the machine. When the rotor angle exceeds a predetermined value, a member 9, which may be a relay (Figs. 2 and 3, not shown) operates to connect the differential action member 5 into the control system. It is stated that this arrangement substantially eliminates hunting.
Patent GB-391047-A (GB)
Title: Improvements relating to repp edge or selvedge motions of looms
IPC: D03D5/00
Filed: 1932-10-31
Abstract: 391,047. Loom shedding-mechanism. DUCKWORTH, J. J., The Grange, Elslack, near Skipton, Yorkshire. Oct. 31, 1932, No. 30485. [Class 142 (i).] Selvedge healds for producing repp edges or like borders are mounted on either side of the main harness and are operated independently by connections from the dobby or other shedding-mechanism. The healds on one side are connected to a roller E on a rotatably mounted sleeve C, and the healds on the other side are connected to a roller E on a shaft A. The sleeve C and the shaft A have independent connections M, M<1> respectively with the shedding-mechanism. The return movements are effected by springs.
Patent GB-629757-A (GB)
Title: Improvements in and relating to a cemented carbide body having a soft metal insert and a method for securing the insert therein
IPC: B21C3/12
Filed: 1947-11-18
Abstract: 629,757. Making dies. BRITISH THOMSON - HOUSTON CO., Ltd. Nov. 18, 1947, No. 30540. Convention date, Nov. 20, 1946. [Classes 83 (ii) and 83 (iv)] Forging.-A cemented carbide body such as a die 1 is joined to another body such as a holder 7 by forming the carbide body with one or more tapered recesses 3 and upsetting into the recesses soft metal blanks 2 which are then bored and tapped to receive securing screws 8.
Patent GB-346330-A (GB)
Title: Improvements in or relating to rotary separating or screening apparatus
IPC: B07B1/15
Filed: 1929-10-08
Abstract: 346,330. Sifting-apparatus. GRIFFIN, N. H. R., 19, St. Swithin's Lane, London. Oct. 8, 1929, No. 30548. [Class 117.] Relates to rotary screens of the kind comprising a series of rigid fixed rings D, loose rings E of greater diameter, spacing members G, endplates B and the bolts C, and consists in (a) providing the spacing members with grooved central bosses to form guide bearings for the loose rings, (b) dividing up the length of the screen by one or more intermediate discs F to provide supports for the tie-rods and (c) reducing the ends of the bolts as at C<1> and securing them in the endplates by flanged bushes and nuts so as to allow the removal and replacement of the parts without dismantling the screen. The endplates are keyed to the shaft A which is preferably protected from the falling material by loose sleeves A<1>. The inner periphery of the fixed rings is notched to take the tie-rods and prevent movement, and the movable rings are slightly tapered inwardly and provided with a round edge where they run in the grooved distance-members G.
Patent GB-1059786-A (GB)
Title: Improvements in or relating to the production of polyphosphoric acid
IPC: C01B25/24
Filed: 1964-08-04
Abstract: Polyphosphoric acids are prepared by heating orthophosphoric acid which contains impurities to a temperature of 650 DEG  F. or above by contacting said ortho-acid with fuel combustion gas so as to concentrate the acid and form cyclic polymers of metaphosphoric acid which react with said impurities to form complexes the major portion of which are removed from the concentrated acid by gravity separation. The heating by contact with fuel combustion gases may be achieved by feeding the impure acid into a reaction zone to form a pool, contacting the pool with a high velocity stream of hot gas which heats the acid to dehydration and polymerization temperatures and carries away droplets of acid into the vapour space above the pool which droplets may be collected from the vapour space and represent purified acid, since the impurities present combine with any cyclic polymers of metaphosphoric acid which are formed in the heating and being heavier remain the pool or fail to reach withdrawal point.  Alternatively, the impurity containing phosphoric acid may be introduced in a finely-divided form into a stream of hot combustion gases and the resulting stream of gas with the acid entrained in it is rotated within a confined space to form an annulus and the metal impurity complexes are withdrawn from the outer periphery of the rotating annulus and phosphoric acid free from said complexes is withdrawn from the lower central portion of the annulus.  Preferred temperature ranges are given as 650-1000 DEG  F. and 680-710 DEG  C. and more than 80% of the P2O5 of the phosphoric acid is converted to the polyphosphoric form.  Any cyclic polymers in excess of those reacting with said metal impurities are heated further to convert them into straight or branched chain polymer phosphoric acids.  An analysis of the product in terms of poly-acids produced is given in Example II.
Patent GB-757894-A (GB)
Title: Improvements in or relating to the separation of magnesium chloride from solid mixtures containing it
IPC: C22B3/26
Filed: 1952-12-03
Abstract: Anhydrous magnesium chloride is separated from mixtures of it with other solid substances by extraction with acetone or another methyl alkyl or methyl aryl ketone, diacetone alcohol or isopropyl alcohol. The process is applied particularly to the mixture of titanium, magnesium and magnesium chloride obtained in the reduction of titanium tetrachloride with magnesium.  This mixture, which has preferably been protected from the atmosphere by covering it with carbon tetrachloride, is suspended in the acetone, &c., and hydrogen chloride is passed in to convert the remaining magnesium to chloride. The solution is then decanted from the finely divided titanium and evaporated to dryness. Specifications 722,184 and 757,910 [both in Group II] are referred to.ALSO:Anhydrous magnesium chloride is separated from mixtures of it with other solid substances by extraction with acetone or another methyl alkyl or methyl aryl ketone, diacetone alcohol or isopropyl alcohol.  The process is applied particularly to the mixture of titanium, magnesium and magnesium chloride obtained in the reduction of titanium tetrachloride with magnesium.  This mixture, which has preferably been protected from the atmosphere by covering it with carbon tetrachloride, is suspended in the acetone &c. and hydrogen chloride is passed in to convert the remaining magnesium to chloride.  The solution is then decanted from the finely divided titanium and evaporated to dryness. Specifications 722,184 and 757,910 are referred to.
Patent GB-262924-A (GB)
Title: New or improved means for damping or controlling relative movement between parts of a vehicle
IPC: B62D7/22
Filed: 1925-12-07
Abstract: 262,924. Eckford, F. G. Dec. 7, 1925. Non-reactive steering-mechanism.-An apparatus adapted to check small movements on either side of a neutral position and to allow free movements of greater amplitude, comprises two opposed cylinders with interconnected pistons and fluid passages in the pistons and cylinder walls. In the application to a motor vehicle steering-gear shown in Figs. 2 and 3, the combined cylinder casing c is clamped to the axle a and the pistons j are both connected to one arm e' of a spindle e to which is secured outside the casing an operating arm f connected by a link g to the steering track rod. Each piston is provided with a spring controlled lift valve k and with a side hole l and groove m which co-operate with a hole n and a passage o leading to the end of the cylinder to prevent any restriction of movement of the two pistons when away from the central position. When at or near the central position liquid can only escape from either cylinder through the passages p, o, q and a small leak r<1> in a plug r. A safety valve s is provided. The whole of the apparatus is intended to be filled with liquid, and to reduce interference by any foreign air, the passages p are led into the cylinders at their highest points and not as shown on the drawings. The throttling passage r<1> may be formed in the safety valve s. In a modification the two cylinders are in line and the two pistons are connected by a toothed rack which is engaged by a sector secured to the shaft e.
Patent GB-942732-A (GB)
Title: Folding table and seat structure
IPC: A47B3/14
Filed: 1962-08-13
Abstract: 942,732. Table and seat structures. K. H. WILSON. Aug. 13, 1962, No. 31039/62. Headings A4H and A4W. A folding table and chair structure comprises two top sections 1 and 2 hinged at 10 to permit swinging movement from their horizontal operative position to the vertical folded position, upright legs 13, 14, 15, 16, 17 and 18 whose upper parts 19 are welded to shafts 23 and 24 journalled to frames 5 and 6, each leg having a seat 26 mounted on its lower part 20 off-set from the upper part 19 by a horizontal section 21, and rigid links 30, 31 pivoted to cross-bars 22 of each leg through fingers 34 with control links 32, 33 pivoted to fingers 34 associated with legs 13 and 16 and to fingers 36, 38 projecting from members 8 of frames 5 and 6, the system operating to maintain the legs and seats in their upright position when the top sections are folded or unfolded. This folding is assisted by springs 40 which are in torsion when the table is unfolded and are housed within tubular members 23. The table is locked in the unfolded position when portions 47 of a bar 46 pivoted at 48 engage notches 50 in the hinge leaves 11. The outer legs 15, 18 may have wheels 28, the other legs having rubber feet 29. Specification 846,366 is referred to.
Patent GB-409402-A (GB)
Title: Improvements in or relating to photographic developing processes and apparatus
IPC: G03D7/00
Filed: 1932-11-03
Abstract: 409,402. Photographic developing apparatus. HALL, B. J., Stourton House, Dacre Street, Westminster. Nov. 3, 1932, No. 31065. [Class 98 (ii).] Apparatus for the development of prints by exposure to a gaseous vapour in a closed chamber comprises a roller constituting a feed and delivery roller for the prints and arranged to bear against the sides and edges of the opening to the chamber and to seal the orifices for the entrance and exit of the prints under treatment. In the construction shown in Fig. 1, an opening in the side of a chamber A is closed by the roller B, the flexible ends of the orifices a<1>, a<1> being pressed by adjustable devices D into contact with the roller so as to render the apparatus gas-tight at the points of entrance and exit of the prints which are fed in and delivered at a<10> and a<11> respectively. Guide plates E may be provided to retain the prints in contact with the roller B during their passage through the chamber. In place of the pressure devices D resiliently mounted rollers may be employed. Means for feeding liquid into the chamber are furnished and also heating means. Means for freeing the prints from vapour comprises a water tank with a cover in the form of a grid of perforated plates with a similar grid above to form a narrow delivery orifice for the prints.
Patent GB-173661-A (GB)
Title: A self-acting locking lamp-holder for incandescent electric lamps when same are inserted
IPC: H01R33/97
Filed: 1920-11-04
Abstract: 173,661. Barker, A. J. Nov. 4, 1920. Holders.-Two spring tongues B are formed at opposite sides by slitting the holder, and indentations D in the tongues serve to guide the pins of the lamp cap to perforations E. To remove the lamp, the tongues B are prised apart. If the tongues do not extend to the end of the casing as shown, indentations are provided from the end of the casing to the indentations D in the tongues.
Patent GB-689663-A (GB)
Title: Improvements in or relating to thermosetting resinous materials
IPC: C08G77/00
Filed: 1950-12-22
Abstract: Thermosetting resinous materials are made by reacting a silane or silane mixture of the general formula RnSiX4-n, in which R is a saturated aliphatic hydrocarbon radical containing less than 7 carbon atoms or a monocyclic aryl radical, X is alkoxy, acyloxy or chlorine, and n has an average value from 0.9 to 2.1, with glycerine in amount such that the ratio of silane X radicals to glycerine hydroxyl radicals is from 0.25 to 0.9 and reacting the resulting silane-glycerine ester with an acid ester formed by reacting glycerine with a dicarboxylic acid or anhydride thereof, the glycerine and acid or anhydride being reacted in amount such that the molar ratio of the acid or anhydride to glycerine is from 1.33 to 2, and the silane ester and acid ester being reacted in such amount that the ratio of the total glycerine hydroxyl radicals to the sum of the carboxyl groups plus silane X radicals is from 0.9 to 1.2.  The silanes specified contain methyl, ethyl, propyl, butyl, cyclohexyl, cyclopentyl, phenyl, tolyl, chlorophenyl, xylyl, methoxy, butoxy, stearyloxy, stearoyloxy, 2-ethyl hexoyloxy, benzoyloxy and linoleyloxy radicals.  The silane mixture may consist of 2 or more of the silanes SiX4, RSiX3, R2SiX2 and R3SiX.  Dicarboxylic acids specified are phthalic, malonic, maleic and fumaric.  The reaction of the silane(s) with glycerine may be effected, in the presence or absence of solvents, at a temperature of 30 DEG  to 250 DEG  C., and that of the silane ester and acid ester at 100 DEG  to 250 DEG  C. Solutions of the products in cyclohexanol, ketones and aromatic hydrocarbons may be applied to the surfaces of base members.  The resins are suitable for high temperature magnet-wire enamel and high temperature paint vehicles.  In examples, a glycerol-phthalate ester was reacted with a silane ester made by reacting glycerine with (1, 3) a mixture of phenylmethyldiethoxy- and phenyltriethoxysilanes, (2, 4) phenylmethyldiethoxysilane, (5) ethoxy hexoyloxyphenylmethylsilane, and (6) phenylmethyldibenzoyloxysilane. Specifications 663,599 and 689,662 are referred to.
Patent GB-1189013-A (GB)
Title: Improvements in or relating to Bleaching Compositions
IPC: C11D17/00
Filed: 1967-07-06
Abstract: 1,189,013. Bleaching compositions. UNITED STATES BORAX & CHEMICAL CORP. 6 July, 1967 [16 Aug., 1966; 7 Oct., 1966], No. 31269/67. Heading D1P. [Also in Division C1] A bleaching composition comprises a water soluble chlorine or oxygen bleach intimately mixed with a carrier composition comprising a mixture of sodium borate having a mole ratio of Na 2 O to B 2 O 3  of from 0.22 to 0.36, sodium sulphate and up to 20% by weight of water, including water of hydration. The preferred ratio of Na 2 O:B 2 O 3 :SO 3  is 1:4:1, and the preferred water content of the carrier is 8-20%. It is preferred that the carrier has a pore density of 0.1 to 1.2 g/ml. Suitable bleaches are chlorinated cyanuric acids e.g. trichloro-isocyanuric acid, dichloroisocyanuric acid and sodium and potassium dichloroisocyanurates, dimethyl-dichlorohydantoin, N- chlorosuccinimide, alkaline earth hypochlorites, alkali metal monopersulphates and perborates, and sodium hydrosulphite. The bleaching composition may be made into tablets and these may be coated with a water soluble soap, a synthetic organic detergent and/or a water conditioner e.g. by the method of Specification No. 993,583. Pigments and binders may also be included in the tablets.
Patent GB-1081463-A (GB)
Title: Preparation of polyoxytetramethylene glycol
IPC: C08G65/20
Filed: 1964-08-04
Abstract: Polyoxytetramethylene glycols of formula HOCH2CH2O(CH2CH2CH2CH(R)O)nH wherein R is a C1- 4 alkyl group, and n is such that the molecular weight is at least 300, are prepared by reacting ethylene oxide with a molar excess of alkyl substituted tetrahydrofuran, in the presence of boron-trifluoride tetrahydrofuran etherate and water, the molar ratio of etherate to water being between 1:0.01 and 1:1.5.  The examples describe the polymerization of 2-methyltetrahydrofuran in the presence of ethylene oxide.ALSO:Polyoxytetramethylene glycols of formula HOCH2CH2O(CH2CH2CH2CH(R)O)nH, wherein R is a C1- 4 alkyl group, and n is such that the molecular weight is at least 300, are prepared by reacting ethylene oxide with a molar excess of alkyl substituted tetrahydrofuran, in the presence of boron-trifluoride tetrahydrofuran etherate and water, the molar ratio of etherate to water being between 1:0.01 and 1:1.5.  The examples describe the polymerization of 2-methyltetrahydrofuran in the presence of ethylene oxide.