baber/WOPTO huggingface dataset:
Patent GB-254307-A (GB)
Title: Method or process for distinguishing japanese pearls with a mother-of-pearl core from real natural pearls
IPC: G01N33/38
Filed: 1926-06-22
Abstract: 254,307. Nacken, R., (Assignee of Jaeger, G.). June 27, 1925, [Convention date]. Drawings to Specification. Optical apparatus. - Japanese pearls with mother-of-pearl cores are distinguished from natural pearls by examining them in a moving or stationary magnetic or electric field, the Jananese pearls tending to adjust themselves with the stratification of the mother-of-pearl substance of the core in the direction of the lines of force while natural pearls are unaffected. The change in the field of force or in the position of the pearl may be transmitted to an indicator or the change in position may be measured directly. The pearl may be suspended freely on a thread between the poles of an electromagnet or in a liquid of approximately the same specific gravity as the pearl, or between two liquids one of higher specific gravity and the other of lower specific gravity than the pearl. The pearl may be moved in the field and the change in the field produced transmitted to an indicator. Alternatively, the change in position of the pearl may be used to bring it into position favourable for an optical examination. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a further alternative in which the liquid may possess similar magnetic properties to the pearl so as to balance any departure in shape from a sphere. This subject-matter does not appear in the Specification as accepted.
Patent GB-827577-A (GB)
Title: A specimen holder for making test dyeings
IPC: D06B23/10
Filed: 1958-05-15
Abstract: <PICT:0827577/IV(c)/1> <PICT:0827577/IV(c)/2> A specimen holder for making test dyeings comprises a container with impermeable side walls 10, a perforated base 12 and a movable perforated cover 20, the arrangement being such that, when the apparatus is in use, the perforated cover is situated below the upper edge of the side walls. The container may be cylindrical, oval, conical or any other shape to correspond to that of the dye-beaker.  As shown, to the upper part of cylindrical wall 10 are fixed at opposite points two spring arms 141 which support a cross-bar 16, the latter permitting adjustment of the cover 20 through bolt 17 and clamping screw 18.  The cover 20 is connected to rod 24 by strut 22, the rod 24 having suspending means, e.g. a hook 26, at its upper end so that the entire holder can be immersed in dye-beaker 30.  Rod 24 may alternatively be clamped or otherwise fixed to an automatic dyebath immersion mechanism.  The specimen 32 to be dyed is placed in the container and pressed down by the cover 20 into a fixed position.  Dye liquor contained in that part of the holder above the cover 20 and within the wall 10 runs through the specimen when the container portion is removed from the beaker.
Patent GB-148035-A (GB)
Title: Improvements relating to radiator fins
IPC: F28D1/053
Filed: 1919-06-23
Abstract: 148,035. Williams, L. W. June 23, 1919. Gills for tubes.-A collar c adapted to be slipped over the steamtube or the like from which heat is to be radiated, has a rib a preferably of crinkled form, pressed cold upon it and the two are welded together.
Patent GB-403298-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: E03C1/232
Filed: 1933-05-31
Abstract: 403,298. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. May 31, 1933, No. 15756. Convention date, May 31, 1932. [Class 39 (i).] The cooling of liquid-or air-cooled valves is facilitated by the provision on the external surface of the envelope of a plurality of needleshaped fins. The fins may be formed of material which is different from or is the same as that of the envelope and they may be integral with the envelope or formed on a member separate therefrom.
Patent GB-135540-A (GB)
IPC: A61B6/02
Filed: 1918-09-27
Abstract: 135,540. Rodriguez, M. B. Sept. 27, 1918. Stcreoscopic apparatus.-X-ray apparatus forproducing and viewing stereoscopic shadows of the object under examination directly upon a fluorescent screen comprises an X-ray tube containing two cathodes and two anti-cathodes and two obturating-disks 12, 24 placed in front of the tube and the viewing-device respectively. These obturating-disks are synchronously driven by flexible shafting from an electric motor 15. In operation, the illumination from the anti-cathodes passes through openings 10, 11 respectively, the light source being alternately cut off by the obturator 12. Right and left handed images of the body 16 containing a foreign body 17 are thus thrown alternately upon the screen and are viewed alternately through the eye-holes 22, 23. The interrupter of the primary circuit of the transformer 8 may be operated synchronously with the obturating disks.
Patent GB-619873-A (GB)
Title: Improvements in the production of xylidines
Filed: 1946-05-24
Abstract: Xylidine "residues" and xylidine "mother liquors," as defined below, are separately treated with alkali to regenerate the contained amines which are then separately fractionally distilled in a column having the equivalent of at least 20 theoretical plates and operated at a reflux ratio of not less than 10 : 1 to yield a fraction from which the desired xylidine is obtained.  Preferably, the distillation pressure does not exceed 50 mms., with a reflux ratio for the "residues" of not less than 10 : 1 to give a fraction with an initial B.Pt. of 97 DEG  C. at 10 mms. pressure and consisting essentially of ortho-4-xylidine; and with a reflux ratio for the "mother liquors" of not less than 15 : 1 to give a fraction having a final B.Pt. of 94-96 DEG  C. at 10.5 mms. pressure and consisting mainly of meta-2-xylidine.  The desired xylidines may be further purified by known methods such as redistillation, crystallization and filtration, or by means of organic derivatives or mineral acid salts.  The discarded fractions or the filtrate from purification may be returned to the manufacturing cycle.  The xylidine "residues" are those arising after the separation of crude para-xylidine hydrochloride from the product resulting from the treatment with hydrochloric acid of the residue left after separating meta-4-xylidine acetate from the resultant of treating a xylidine mixture with acetic acid.  The "mother liquors" are those arising from the recrystallization from water of the above crude para-xylidine hydrochloride.ALSO:Xylidine "residues" and xylidine "mother liquors," as defined below, are separately treated with alkali to regenerate the contained amines which are then separately fractionally distilled in a column having the equivalent of at least 20 theoretical plates and operated at a reflux ratio of not less than 10 : 1 to yield a fraction from which the desired xylidine is obtained.  Preferably, the distillation pressure does not exceed 50 mms., with a reflux ratio for the "residues" of not less than 10 : 1 to give a fraction with an initial B.Pt. of 97 DEG  C. at 10 mms. pressure and consisting essentially of ortho-4-xylidine; and with a reflux ratio for the "mother liquors" of not less than 15 : 1 to give a fraction having a final B.Pt. of 94-96 DEG  C. at 10.5 mms. pressure and consisting mainly of meta - 2 - xylidine.  The desired xylidines may be further purified by known methods such as redistillation, crystallization and filtration, or by means of organic derivatives or mineral acid salts.  The discarded fractions or the filtrate from purification may be returned to the manufacturing cycle.  The xylidine "residues" are those arising after the separation of crude para-xylidine hydrochloride from the product resulting from the treatment with hydrochloric acid of the residue left after separating meta-4-xylidine acetate from the resultant of treating a xylidine mixture with acetic acid.  The "mother liquors" are those arising from the recrystallization from water of the above crude paraxylidine hydrochloride.
Patent GB-553968-A (GB)
Title: Improvements in cutting tool holders
IPC: B23B31/02
Filed: 1941-12-09
Abstract: 553,968. Chucks. GOUGHLIN, D. J. Dec. 9, 1941, Nos. 15863 and 15864. Convention dates, Nov. 29, 1940 and Nov. 10, 1941. [Class 83 (iii)] [Also in Group XXIII] A tool-holder for drills &c. has a shank 10 with a head 11 slotted diametrically at 12 to take radially adjustable jaws 23 of trapezoidal crosssection to fit the section of the slot. Radial adjustment of the jaws 23 brings different semicircular recesses 24 .. 26 therein into register to fit different sizes of drill, the drill being gripped when the shank 10 is screwed into the head 11 to force the jaws into the narrower side of the slot 12.
Patent GB-1303154-A (GB)
IPC: D01D5/42
Filed: 1970-04-03
Abstract: 1303154 Polypropylene strips BADISCHE ANILIN & SODA FABRIK AG 3 April 1970 [5 April 1969] 15886/70 Addition to 1303151 Heading B5B Polypropylene strips are produced by extrusion at a melt temperature of 180 to 360‹ C. of film or sheet having a thickness of 0À03 to 10 mm. and a width of 15 to 3000 mm., drawing the film or sheeting monoaxially longitudinally at a draw ratio of from 4:1 to 15:1 at a temperature of the material above 10‹ C. but lower than the crystallite melting point of the polypropylene used and cutting the film or sheeting thus produced longitudinally at a temperature of the material of 10 to 100‹ C. into strips having the desired width. The polypropylene used is a mixture of 70 to 80% by weight of a polypropylene of which less than 1% by weight is soluble in toluene boiling at standard pressure, the ratio by weight of polypropylene to toluene being 5:95, and 20 to 30% by weight of a polypropylene of which more than 99% by weight is soluble in toluene boiling at standard pressure, the ratio by weight of polypropylene to toluene being 5:95. The polypropylenes have substantially the same intrinsic viscosity and the same molecular weight distributions (determined by the method of gel permeation chromatography) The absolute values of the intrinsic viscosities of the polypropylenes (measured in decahydronaphthalene at 130‹ C.) are within the range 1 to 10, preferably 1À2 to 3À8.
Patent GB-517370-A (GB)
Title: Improvements relating to aircraft undercarriages with resilient wheel units
IPC: B64C25/00
Filed: 1938-05-27
Abstract: 517,370. Aircraft alighting gear. BOUND, R. H. May 27, 1938, No. 15892. [Class 4] An aircraft landing wheel is mounted on a pair of pistons and cylinder shock absorbers spaced by the wheel spindle and adapted to displace liquid against resilient resistance in a chamber in the spindle. The wheel spindle 7 is formed integrally with the shock absorber cylinders 4 which are pivoted at 2a to the wheel fork 1. The piston rod 3 is pivoted at 3a to the fork. The shock absorber liquid is adapted to be forced through an opening 13 and past a valve 12 against one side' of a piston 14 in the spindle 7, which contains a corresponding piston for the shock absorber on the other side of the wheel. The space between the pistons is charged with compressed air. In a modification the liquid from both shock absorbers is led by passages 44, Fig. 4, to a single piston 46 arranged transversely of the axis of the spindle. The liquid spaces of the shock absorbers is annular through which pass the piston rods 33. The shock-absorber cylinders are formed in the wheel spindle 34. A lever 32 is pivoted at 32a to the wheel fork 31a and surrounds the end of the spindle 34 to which it is secured by studs 35 and closes the end of the shock-absorber cylinder. Specifications 473,756 and 473,768 are referred to.
Patent GB-1421248-A (GB)
Title: Cooled continuous casting mould with support frame and inter connecting coolant conduits
IPC: B22D11/053
Filed: 1973-04-03
Abstract: 1421248 Continuous casting FIVES LILLECAIL 3 April 1973 [10 April 1972] 15943/73 Heading B3F A continuous casting mould 10, 12, 14 is supported on an oscillating frame 18, coolant conduits 22, 24 of the mould terminating in a common flange 26 connected to the mould (by the conduits) so that there is some play between the flange and mould (due for example to some flexibility of the U-tubes 24), while coolant supply and discharge conduits 32 carried by the frame 18 terminate in a second flange 28 carried by the frame; the two flanges 26, 28 are clamped together by means such as pins and keys (30) independent of means such as pins and keys (20) for securing the mould 10, 12, 14 to the frame 18. The arrangement facilitates rapid assembly and dismantling. The second flange 28 is carried, by the frame 18, flexibly or, as shown, by vertical tubes 32 aligned with the U-tubes 24 and sliding with some radial clearance in sockets of the frame 18. The mould has walls 12 clamped between larger walls 14 by resilient clamping means 16 in a mould frame 10 secured on the oscillating frame 18 by the pins and keys (20). The frames 10 and 18 are each formed from four box girders and the mould frame 10 and the walls 12, 14 are cooled by water circulation. The part-flexible conduits 22 supply water to the small walls 12 and the U-tubes 24 supply and discharge from the walls 14. One of the flanges 26, 28, which run the length of the larger mould walls 14 and parallel thereto, may be fixed rigidly while the other has several degrees of freedom; alternatively, one flange can be displaced in its plane only, and the other perpendicularly to its plane only.
Patent GB-318283-A (GB)
Title: Improvements in kinematograph projecting apparatus
IPC: G03B1/22
Filed: 1928-06-01
Abstract: 318,283. Newman, A. S. June 1, 1928. Kinematograph apparatus.-In claw-feed mechanism comprising claws at one end of a lever which is pivoted between its ends to a swinging shaft and is moved at the other end by the pin of a crank on a secondary shaft rotated with varying velocity by means comprising a crank pin mounted on a main shaft and engaging a slotted crank on the secondary shaft, the main and secondary shafts are respectively carried by a closing plate and a casing which are relatively slidable to vary the separation of the shafts and so alter the length of the picturechange period. As shown, a main shaft 2 mounted in a plate 11 carries a crank 3 having a pin 4 carrying a block 6 engaging a slotted crank 7 carried by a secondary shaft 8 mounted in a casing 9. The casing 9 may be oil-tight, and has a flange 10 provided with parallel slots 12 receiving screws 13 and permitting relative adjustment of the plate 11 and casing 9. The shaft 8 carries a crank 14 connected by its pin 15 to one end of a lever 16 pivoted to a swinging shaft 17 wholly on one side of the film and connected by arms 18 to a rocking shaft 19. The lever 16 comprises a part 21 fixed to it and carrying a sleeve 22 surrounding the shaft 17; the sleeve 22 rigidly carries a bar 23 and crossbar 24. The claw arms 26 are respectively connected to a sleeve 25 round the sleeve 22 and to a sleeve 27 surrounding the shaft 17, and are normally held against stops 28 by a leaf spring 29, adjustably held by a nut 33 on a threaded rod 30 carried by the bar 23, and bearing centrally on a cross bar 31. The claws 32 are practically tangential to a circle concentric with the shaft 17, and, when feeding the film, are pressed into it by the spring 29, the stops 28 being then in such positions as to disengage the arms 26.
Patent GB-218667-A (GB)
Title: An improved method and apparatus for making a durable dielectric connection at the soldered joints and repaired places of electric conductors insulated with guttapercha or the like
IPC: H02G1/14
Filed: 1924-07-03
Abstract: 218,667. Norddeutsche Seekabelwerke Akt.-Ges. July 4, 1923, [Convention date]. Templets. - In electric conductors insulated with gutta percha the insulation at joints and repaired places is made good by applying heated gutta percha at one end of the part and distributing it over the whole region by heated dies or rollers. A machine for drawing the material over a joint is shown in Fig. 1 and comprises interchangeable divided bushes g for clamping the conductor and a divided die i provided with an interchangeable bush, which is previously heated and may be drawn over the conductor or joint along guides h by knobs m. Fig. 4 shows a machine for distributing the insulating material by rolling. Two profiled rollers p are carried by guides q along the conductor joint and rollers at the sides prevent lateral spreading of the insulation. Gears s engaging racks r turn the rollers p. The cable is clamped in grippers o.
Patent GB-396906-A (GB)
Title: Improved safety envelope
IPC: B65D27/30
Filed: 1932-06-08
Abstract: 396,906. Envelopes. GUMBRECHT, R. F., 337, Green Lanes, Harringay, London. June 8, 1932, No. 16129. [Class 146 (ii).] An envelope is provided with the usual closure flap 3 and with an additional flap 4 on the bottom edge, both flaps being provided with slits 6, 7 whereby a tongue 31, 5 of each flap may be tucked through the slit of the other, the flaps having gummed areas for sealing down. The side flaps 2 are folded over the central portion of the blank, the flap 4 is then folded over the flaps 2 and the tongue 5 of the flap 4 passed through the slit 7 in the flap 3 ; the flap 3 is then folded downwardly and secured by its gummed surfaces to the flaps 2, 4, leaving its tongue 31 free to be inserted into the slit 6 in the flap 4. The tongue 3<1> is gummed at 9 on its outside surface and is adhered, inside the envelope, to the flap 4 ; the tongue 5 of the flap 4 is also gummed at 10, and is adapted to be folded and sealed over the slit 6 and the gummed tongue of the flap 3. An opening device, comprising a string secured along the fold of the flap 3 and provided at its outstanding ends with brass caps or the like, may be provided.
Patent GB-403102-A (GB)
Title: Manufacture of a baked cereal preparation
IPC: A21D2/34
Filed: 1932-06-08
Abstract: A cereal preparation is made by scalding a concentrated fluid meat extract with hot water and then adding it to dough and baking the mixture.  The amount of extract added may be up to 3 per cent of the weight of the flour.  Malt flour up to 2 per cent of the weight of the wheat flour may be scalded with hot water and added with the meat extract to the dough.  The scalded mixture of malt flour and meat extract may be cooled before being added to the dough.  The mixture is kneaded, moulded, shaped, divided or panned in the usual way and baked to produce loaves, biscuits, cakes, &c. Shortening and sugar may be added to the dough mixture to produce biscuits and other ingredients such as eggs for making rusks.
Patent GB-697416-A (GB)
Title: Manufacture of cupriferous disazo-dyestuffs
Filed: 1951-07-06
Abstract: The invention comprises cupriferous azo dyestuffs of the formula <FORM:0697416/IV (c)/1> where one X is sulphonic acid and the other is hydrogen, R1 is a p-linked benzene nucleus, Y is halogen, hydroxyl, amino or arylamino (benzene nucleus) and R2 is a benzene nucleus with the azo and metalliferous groups oto one another. These are made by coupling diazotized Z-R2-NH2 with the corresponding monoazo dyestuff in alkaline medium and coppering the product; Z is hydroxyl or a group which is converted into hydroxyl during coppering, e.g. halogen, methoxy or ethoxy. R2 may contain further substituents, e.g. halogen, alkyl, alkoxy or sulphonic acid. Coppering is preferably carried out with cupric tetrammine salts derived from ammonia or organic bases such as pyridine, morpholine and ethanolamine.  The products may be used for dyeing and printing wool, silk, cotton, linen and regenerated cellulose.  The dyeings are fast to light even after anti-creasing treatment.  The monoazo intermediates are made by coupling diazotized 8 - arylsulphonyloxy - 1 - naphthylamine - 3 : 6 - or - 4 : 6 - disulphonic acid with a p-coupling amine of the benzene series.  Cyanuric chloride is then condensed in either order with 1 mol. of this monoazo dyestuff and 1 mol. of J-acid. Finally, if desired, the third halogen atom is reacted with ammonia or an amine of the benzene series, or exchanged for a hydroxyl group.  The arylsulphonyl group is hydrolysed off before or after the cyanuric condensation.  In the examples (1) cyanuric chloride is condensed with J-acid, the dyestuff H acid p-toluenesulphonyl ester --> cresidine, and aniline; the sulphonic ester group is then hydrolysed and the product coupled with diazotized p-methoxymetanilic acid and finally coppered; (2) as in (1) using diazotized 2 - aminophenol - 4 - sulphonic acid; (3) as in (1) using K acid instead of H acid; (4) cyanuric chloride is condensed with J acid, the dyestuff H acid --> p-xylidine, and aniline; the sulphonic ester group is then hydrolysed and the product coupled with diazotized o-anisidine-5-sulphonic acid and finally coppered; (5) cotton is dyed with the product of (1). Other suitable components are mentioned.
Patent GB-1267538-A (GB)
Title: Filter bed for a wet type dust collector
IPC: B01D50/00
Filed: 1969-03-27
Abstract: 1,267,538. Gas scrubber. NATIONAL DUST COLLECTOR CORP. 27 March, 1969 [20 May, 1968], No. 16192/69. Heading B1R. In a gas scrubber 10 gas from an inlet 34 passes upwardly through a bed of wetted elongated filter elements 100 arranged to extend transversely of the gas flow and supported at their ends in slots in a support bar which allow limited movement of an element towards and away from an adjacent element. As shown the scrubber comprises an upper and a lower bed of filter elements the latter being disposed in a throat section 44. The upper bed consists of several rows of filter elements the elements in alternate rows being at right angles to the elements in the adjacent row or rows. The lower bed is wetted by liquid from upwardly directed nozzles 110. The filter elements may be solid or hollow cylinders and the slots in which the elements are supported may have rounded surfaces facilitating rotary movement of the elements. Bars. may be associated with the elements such that any deposit on the elements may be scraped away by the bars during rotation of the elements.
Patent GB-495120-A (GB)
Title: Improvements in roller skates
IPC: A63C17/02
Filed: 1938-05-02
Abstract: 495,120. Boller skates. HISCOCK, H. S., and HISCOCK, R. S. May 2, 1938, No. 16194/37. [Class 132 (i)] In a roller skate comprising an arched girder frame b having at each end lugs a<1> and b<1> for a swivel pin c carrying the wheel mounting, the latter including a bearing block co-operating with a piston resiliently mounted in a cylinder d, the foot plate a, frame b, lugs a and b<1>, and cylinders d are cast integrally. When the wheels e<1> swivel, the bearing block of the wheel mounting moves the resiliently mounted piston by a cam-like action and thus an elastic restoring force is exerted on the wheel mounting whenever it swivels.
Patent GB-912287-A (GB)
Title: Esters of phosphoric acid
Inventor: MATHER JOHN
IPC: C07F9/12
Filed: 1959-05-12
Abstract: The invention comprises compounds of the general formula: <FORM:0912287/IV (b)/1> wherein R is H or alkyl and compounds of the formula: <FORM:0912287/IV (b)/2> wherein R is alkyl and M is a metal cation.  They may be obtained by reacting an alkyl ester of hydroxybenzoic acid with an O-alkyl phosphorodichloridate to form a compound of formula I above in which each R is alkyl and this compound may be hydrolysed by conventional methods to form the free triacid, or the OR group attached to phosphorus may be converted to the -OM group by treatment with a metal halide, e.g. sodium iodide. The hydrolysis of the triester to form the triacid may be effected by refluxing with 5N aqueous sodium hydroxide solution followed by acidification, or by refluxing with 5N HCl or H2SO4. Examples are given for the production of a compound of formula I in which each R is methyl and of a compound of formula II in which each R is methyl and M is sodium.  The products are useful as components of fibre-forming polyesters.  Methyl phosphorodichloridate is obtained by adding dry methanol to phosphorus oxychloride at -10 DEG C. over 1 hour while passing a stream of carbon dioxide through the liquid and then allowing the mixture to warm to room temperature, the flow of carbon dioxide being maintained for 4 hours.