baber/WOPTO huggingface dataset:
Patent GB-1401902-A (GB)
Title: Chemical oxygen generators
IPC: C01B13/02
Filed: 1973-04-11
Abstract: 1401902 Alkali metal chlorate oxygen generator LIFE SUPPORT Inc 11 April 1973 17432/73 Heading C1A [Also in Division C5] An O 2  generating composition comprises (a) a major amount of an alkali metal chlorate, (b) an oxide of Na and/or K, and (c) mica, SiO 2 , or glass. The composition may contain 0À5-20% by wt. Na 2 O, Na 2 O 2 , K 2 O, K 2 O 2  and/or KO 2 ; preferably a mixture of 3% Na 2 O 2  and 3% by wt. Na 2 O. The mica, SiO 2  or glass may be present in an amount of from 0À5-6% by wt. and having a particle size of 160-200 U.S. mesh. Synthetic mica having the formula is preferred. The glass may be vitreous, borosilicate, lead-potash, " Pyrex " (Registered Trade Mark), soda-lime or potash-lime. The SiO 2  may be sand or quartz. The chlorate may be NaClO 3  present in an amount of 90% by wt. The composition may be in the form of a candle have a recessed cone at one end containing an initiator mixture composed of 41À1% NalO 3 , 44À1% Na 2 O, 5À8% Mg(ClO 4 ) 2  and 9À0% by wt. Na ClO 4 . Reference has been directed by the Comptroller to Specification 1,315,779.
Patent GB-334595-A (GB)
Title: Improvements relating to the economisers of steam generating installations
IPC: F22D1/20
Filed: 1929-06-07
Abstract: 334,595. Horsman, H. S. June 7,1929. Water-tube boilers.-In a boiler having upper and lower drums connected by banks of tubes C, D and provided with an economizer consisting of drums G, H connected by a vertical bank of tubes F, the economizer is of a width much less than that of the boiler and substantially that of the normal outlet K of the economizer, the boiler setting adjacent the economizer and immediately behind the boiler being correspondingly reduced. Specification 264,612 is referred to.
Patent GB-664108-A (GB)
Title: Openwork metal flooring or grating
IPC: F16B2/06
Filed: 1949-07-05
Abstract: 664,108. Gratings; floors; treads. JONES, G. F. June 8, 1950 [July 5, 1949], No. 17683/49. Classes 20(iv) and 107 A metal grating or floor of the type having parallel bars 1 and cranked connecting bars 2 has at least the parts 3 of these connecting bars of the same depth as bars 1 and flush with them, the bars being connected by arc welding across these flush undersides. The grating is secured in position by a mounting plate 8 welded thereto, and having a bolt 10 through slot 9 engaging a retaining piece 12 which grips foundation member 13. Slots 14 shown in section in Fig. 8, provide a key for welding metal between plate 8 and bars 1.
Patent GB-479659-A (GB)
Title: Improvements in or relating to ore reducing machines
IPC: B02C17/18
Filed: 1937-06-25
Abstract: 479,659. Impact pulverizers. HARDINGE CO., Inc. June 25, 1937, No. 17731. Convention date, July 18, 1936. [Class 59] An ore-reducing machine comprises a revolcable drum with internal peripheral buckets having open ends spaced from the side walls of the drum, an annular shroud mounted on the end wall of the drum and having its inner portion overlapping the open ends of the buckets, whereby ore carried in the buckets and overflowing the open ends thereof will fall into pockets formed in the drum by the shroud and end wall of the drum, and means for discharging from the machine fine particles of ore from the pockets. As shown a drum 11 is mounted on trunnions 14, 15 and is rotated by a motor 17 through sprocket wheels 18, 19. The drum is provided with lifting buckets 22 which are spaced from the side walls 12, 13 by pockets 26 formed by plates 29 inclined to the walls 12, 13 and bounded by inclined annular rings 27, 28. Material is fed through shoot 43 in trunnion 14 and is distributed by the ring 27 into the buckets 22, some of the material spreading along the buckets and falling into the pockets 26. The ring 28 is formed at intervals around the circumference with screening means 31 through which fine material carried by the pockets passes to another screen 38 of arcuate form before entering, through pipe 36, a classifier 40 which may be of the kind described in Specification 389,338. The oversize material from the classifier is returned bv shoot 41 to the buckets 22. Material carried upwardly by the buckets falls onto the lowermost buckets which contain a bed of material which was trapped in the pockets on the upward half of the rotation of the drum and returned to the buckets, after being screened, on the downward half of the rotation of the drum.
Patent GB-372983-A (GB)
Title: Improvements in variable speed gears
IPC: F16D67/00
Filed: 1931-06-19
Abstract: 372,983. Variable-speed toothed gearing. MORT, A., 18, Yarborough Road, Lincoln. June 19, 1931, No. 17834. [Class 80 (ii).] In automatic epicyclic variable-speed gearing for motor vehicles, the sun-wheel B is secured to the driving-shaft A and the planet carrier E to the driven shaft K, while a vanetype hydraulic clutch G, H interconnects the shaft K and the annulus D engaging the planet wheels C. Bevel gearing may be used. The gear may be used in series with a reversing gear in which a driving-wheel B<1> engages planet wheels C<1> the carrier E<1> of which may be moved axially to engage clutch teeth L with teeth L<1> on the annulus D<1>, which is secured to the driven shaft A, for solid drive and to engage brake teeth M with a stationary member for reverse.
Patent GB-602005-A (GB)
Title: An improved isoparaffin alkylation process
IPC: C07C2/62
Filed: 1945-07-12
Abstract: An isoparaffin is alkylated with a pentene in the presence of sulphuric acid in two reaction zones, spent acid from the first being used as catalyst in the second, the acid concentration in the first zone being maintained at not less than 91 per cent and in the second zone at not less than 85 per cent, and the residence time of reactants being not less than 30 and 60 mins. respectively in said first and second zones.  The temperature is 20-80 DEG , preferably 40 DEG  F. in both zones.  Feed stocks may be blended to give an isobutane to pentenes ratio of 7 : 1 and charged to a p  time-tank reactor with 98 per cent acid.  Spent acid after separating from hydrocarbon is withdrawn to maintain the acid concentration at 91 per cent, and charged to the second zone.  The blended feed may be fed separately to both reaction zones or all the isoparaffin may be fed to the first with part of the pentenes, the remainder being fed to the second together with the hydrocarbons from the first after their separation from the acid. The acid : hydrocarbon ratio is maintained at 1 : 1 in both zones with a high recycle rate of acid-hydrocarbon emulsion.  A plurality of vessels may be used in each of the reaction zones. U.S.A. Specification 2,256,615 is referred to.
Patent GB-186688-A (GB)
Title: Helicopters with two propellers rotatable in opposite directions
IPC: B64C27/28
Filed: 1921-07-01
Abstract: 186,688. Chatwin, J. (Overbeek, A.). July 1, 1921. Helicopters; propelling; steering, balancing, and regulating altitude.-Two propellers a, bare mounted on concentric shafts and rotated in opposite directions by friction discs 22, 21, which may be moved together across the face of a driving disc 15 or 17 to equalize the torque of the propellers, the whole apparatus being rotatable about bearings 3 in the car 4 of the machine. The propellers a, b are mounted on shafts 19, 20, the shaft 19 having a flange 29 carrying a ring 28, and the shaft 20 having flanges 25, 26 which form a cup for a ball bearing between the ring 28 and a gland 27 screwed to the flange 26. A similar ball bearing comprising a ring 33 and a gland 32 is provided between the shaft 20 and a sleeve 31. The sleeve 31 can be slid in a sleeve 36, fixed to a frame 38, by rotation of a nut 40, which is prevented from vertical movement by a flange 41. The nut 40 has worm teeth, and may be rotated by a worm 56 on a shaft having a sprocket-wheel 58, which may be rotated from the car 4 by chains and sprocket-wheels 60, 61. The discs 15, 17 are driven from an engine 13 and an electric motor 18 respectively. The driving-shaft 14 has a keyed slidable sleeve 16<a>, Fig. 4, which may be slid against a spring 75 by a lever between collars 16 to declutch the disc. The sleeve has a spherical end with ribs 45 to ensure uniform pressure between the discs. The whole apparatus is mounted in a casing 1, which may be rotated in the car 4 about bearings 3 by a worm which engages teeth 7.
Patent GB-1505185-A (GB)
Title: Sheet handling apparatus
IPC: B65H29/32
Filed: 1975-04-30
Abstract: 1505185 Stacking or separating sheets DERITEND ENG CO Ltd 28 April 1976 [30 April 1975] 17940/75 Heading B8R Sheets are delivered by belts 10, 20, Fig. 1, to the underside of laterally spaced belts 28 passing below a vacuum chamber 32 with a perforate bottom, whereby the sheets are held to the belts 28 by suction. As a sheet is carried over a stacking table 22, it is stripped from the belts by two pairs of fingers 30, each pair being joined by a bar 32 faced with polyurethane, the fingers being driven in both an oscillating and backwards-and-forwards manner by cams 52, 68, so as to follow a path 38, 40, 42. The bars move below the belts path to engage the sheet while travelling at belt speed, are then slowed down, and then deposit the sheet on the stack. In another form, the fingers are connected by stripping wires, and one pair of the fingers carry rollers running on cam tracks to control their movement.
Patent GB-631621-A (GB)
Title: Improvements in electrical snap-action switch devices
IPC: H01H37/66
Filed: 1947-07-08
Abstract: 631,621. Snap-action switches; thermal switches. KERCHER, A. J. July 8, 947, No. 18021. Convention date, July 29, 1940. [Class 38(v)] A snap-acting switch has a spring blade 11 cut intermediate its fixed and moving ends 11a, 11c, to form a spring tongue 12 which engages a fixed abutment 13 so as to place the spring 11 in tension. Adjacent the fixed end 11a the spring 11 has resinlient portion in the form of a loop 11b. The moving contacts 27 are fixed on an insulating strip 29, which has a stud 31 with a groove 32 engaged by a slot in the free end 11c of the spring blade 11 so as to form a lost motion connection. Each moving contact 27 cooperates with a fixed contact 26 and when the switch is thermally operated, the contacts 26, 27 are normally held closed by a magnet 36 which co-operates with an armature 37 carried by the strip 29. In the switch shown, the expansion of a tube 38 retracts a rod 39 to exert pressure on the spring blade 11, which at the required temperature snaps over the dead centre position to open contacts 26, 27. The operating temperature may be adjusted by turning a member 42 which engages a bushing 44 attached to the spring 11, and the initial tension of the spring is adjusted during the assembly of the switch by turning an eccentric bushing 16, engaging a hole in the end 11a of the spring, before this end is clamped by a stud 18. Each moving contact 27 is connected to a terminal 23 by a conductor 34 of woven or braided wire ribbon, one end of which is soldered between the contact 27 and a mounting rivet 48. Figs. 7, 8, (not shown), illustrate a thermal switching arrangement in which two snap-action switch units are mounted one above the other and operated by a single bellows. Sequential operation of the switches may be obtained by adjusting, as by a member 42, the top spring relative to the lower spring.
Patent GB-403670-A (GB)
Title: Loud speakers
IPC: H04R9/02
Filed: 1932-06-27
Abstract: 403,670. Loud-speakers. DEMPSTER, E. R., and MAGNAVOX (GREAT BRITAIN), Ltd., 89, Kingsway, London. June 27, 1932, No. 18154. [Class 40 (iv).] A magnet structure for an electrodynamic sound reproducer comprises a two limb permanent magnet, a flat plate against which one limb of the magnet abuts and a pole-piece on the other limb of the magnet extending into an aperture in the plate, the plate being provided with an extension remote from the magnetic circuit upon which a transformer may be mounted. As shown, the magnet structure comprises a horseshoe magnet 16 having an outer pole plate 10 contacting one limb thereof and a flange 15 of a centre pole piece 14 contacting the other limb thereof, the whole being secured together by a bolt 17. A plate 12 screwed to the plate 10 serves to centre the pole-piece 14 in the aperture 13 in the plate 10, the cross section of which is made equal to or greater than that of the pole piece 14. Holes 18 are provided in the plate 10 for securing the structure to the diaphragm housing and the transformer 19 may be mounted as shown on the plate 10.
Patent GB-112040-A (GB)
Title: An Improved Boring Tool.
Inventor: WILD WILLIAM PETTY
IPC: E21B25/08
Filed: 1916-12-19
Abstract: 112,040. Wild, W. P. Dec. 19, 1916 Ground augers.-A ground auger for forming holes for posts, planting trees, &c., comprises segmental shell cutters a<1>, a<2> arranged with their lower parts eccentric to a circular block b, one of the cutters having a twist drill c at its lower end. One of the cutters is fixed to the block b and the other cutter is detachably connected to the block by a pin d. The tool is connected to a graduated handle tube g with detachable cross bars i. Interchangeable cutters of various sizes may be provided. The tool may be power-driven.
Patent GB-1126319-A (GB)
Title: Improvements in and relating to nuclear resonance probes
Inventor: FECHNER ERNST
IPC: G01R33/30
Filed: 1967-04-20
Abstract: 1,126,319. Nuclear resonance spectroscopes. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN. April 20, 1967, No. 18265/67. Heading G1N. In a nuclear resonance spectroscope the probe in which the sample under investigation is disposed is made of elementary sulphur. The h.f. winding is also arranged in the probe body and may be made of gold or gilt copper wire.
Patent GB-1397724-A (GB)
Title: Ionexchange
IPC: G21F9/12
Filed: 1971-06-01
Abstract: 1397724 Ion-exchange material NATIONAL RESEARCH DEVELOPMENT CORP 29 Aug 1972 [1 June 1971] 18279/71 Heading B1J A particulate ion-exchange material is produced from a weathered basalt containing in total at least 20% of one or more minerals by mechanical comminution and subsequent screening thereof whereby at least 50% by weight of the material consists of particles of size below 3 cm mesh, the X-ray powder diffraction diagram of which basalt exhibiting an intesity maximum corresponding to a lattice spacing between 12 and 18 Angstroms. Examples relate to granules having sizes between 0.3 and 0.7 mm of a substance known as "Rotten Rock" which occurs in County Antrim, Northern Ireland, used for removing Cu and Co from aqueous solutions, for softening water, and for removing radioactive Cs from milk.
Patent GB-1424681-A (GB)
Title: Record players
IPC: G11B17/16
Filed: 1972-04-20
Abstract: 1424681 Automatic record player GLENBURN ENG Ltd 19 April 1973 [20 April 1972] 18291/72 Heading G5R Pawl member 18, pivotally mounted on the usual cam gear wheel 10, is moved to bring its part 22 into engagement with an abutment 5 rotating with the record player turntable whereby the wheel 10 is rotated into drive engagement with pinion 12, also rotating with the turntable, to initiate an automatic record change or switch off of the player. The pawl member is moved by T-shaped operating member 30 which is pushed left to right on the wheel 10 as rod 39 coupled to the pick-up arm engages the rounded cross part 38 of the member when the arm approaches the end of record play. The pawl member 18 includes hemi-spherical part 29 on an extension 28 of its arm 23 which frictionally engages the underside of the operating member and also a resilient arm 26 which is engaged by a nose part 37 extending from the rounded cross part 38 of the operating member. During the cam gear wheel rotation, pins 41 on the underside of the record play deck plate engage a lip 40 on the T-shaped operating member to restore the member to its initial position, extension 35 on the member at the same time pivoting the pawl member back to its start position.
Patent GB-1534472-A (GB)
Title: Cryosurgical probes
IPC: A61B90/00
Filed: 1977-05-02
Abstract: 1534472 Surgical coding and cauterisation devices ERBE ELEKTROMEDIZIN KG 2 May 1977 [14 May 1976] 18322/77 Heading A5R A cryosurgical probe comprises a heating coil 5 for thawing the probe and cauterisation purposes, fitted into a hollow inner cooling section of the cooling tip, the heating coil being such that cauterisation may follow a freezing procedure, and a film 7 of flexible elastomeric plastics material provided on the outer surface of the probe, at least over the part of the probe causing cauterisation, the plastics material being such as to withstand temperatures of up to 200‹C and to prevent tissue adhering during the cauterisation process. The probe also includes a refrigerant, e.g. liquid nitrogen, supply line 1 inside a heat-insulating shaft 6 and has a temperature sensor 9. The heating coil may have a power rating of 120 Watts to reach cauterisation temperatures. A heat insulating tip 10 is provided to prevent unintended freezing or cauterisation of the bladder wall in a transurethral resection operation. The film 7 may be a linear copolymer of vinylidene fluoride and hexafluoropropylene, and the tip may be of the same material or polytetrafluoroethylene.
Patent GB-877117-A (GB)
Title: Improvements in vapour generators
Inventor: EVANS RICHARD HENRY
IPC: F22B37/14
Filed: 1959-05-29
Abstract: 877,117. Tube walls for furnaces. BABCOCK & WILCOX Ltd. May 30, 1960 [May 29, 1959], No. 18345/59. Class 51 (1). In a vapour generator furnace having horizontal, drainable wall tubes, the tubes 4 are bent horizontally at an aperture 2 to form offset parts 10. Webs 9 welded between the tubes 4 are similarly bent, and the offset distance increases from the bottom of the aperture 2 to form a pocket 12 with a horizontal opening. In a modification, a sight hole, Fig. 3, is formed by offsetting alternate tubes 48. At the top and bottom of the sight hole the tubes 40A, 40B, 40C are offset progressively to form a shoulder, and webs 54 between the offset tubes 48 are connected to a cover frame 62 and to webs 39 between adjacent tubes in the rest of the wall. Specifications 870,735 and 877,116 are referred to.
Patent GB-334950-A (GB)
Title: Process for the extraction of emulsified, suspended or dissolved substances from liquids by means of volatile solvents
IPC: B01D11/02
Filed: 1929-06-14
Abstract: 334,950. Langfeldt, E., and Hellerud, R. June 14, 1929. Purifying oils. - In a method of treating liquids to separate emulsified, suspended or dissolved substances contained therein by means of a volatile extraction agent the solvent vapours are introduced into the liquid in a finely distributed condition e.g. by being passed through. porous or finely perforated walls. The liquid to be treated is maintained at a temperature below the boiling point of the solvent, which will then become condensed as very small drops. The solvent vapours are introduced at such a place in the body of the liquid that condensed solvent owing to the difference in specific gravity will move through the liquid in a direction from the place of introduction. Circulation may also be promoted by suitably arranging the cooling apparatus.
Patent GB-570509-A (GB)
Title: Improvements in alternating current voltage regulating transformers
IPC: H01F29/10
Filed: 1943-11-05
Abstract: 570,509. Transformers. HINKSMAN, E. A. Nov. 5, 1943, No. 18361. [Class 38 (ii)] A regulating transformer comprises coaxial stationary primary and secondary coils 10, 11 and a movable core or core part 9 extending into a passage within the windings so as to vary the number of secondary turns effectively linked with the primary. In a modification, Fig. 2 (not shown), the yokes are formed integrally with the centre limb 9 so as to move therewith. Alternative arrangements in which the core is of annular or cylindrical form or is modified to co-operate with polyphase windings are described with reference to Figs. 3 and 4 (not shown). Specification 514,972 is referred to.
Patent GB-627691-A (GB)
Title: Improvements in and relating to starters for electric discharge devices and circuitstherefor
IPC: H05B41/04
Filed: 1945-07-18
Abstract: 627,691. Control systems for space discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. July 18, 1945, No. 18373. Convention date, July 26, 1944. [Class 38 (iv)] To obtain rapid starting of an electric discharge device, a switch for producing-an inductive " kick " for starting the device is actuated by a piezo-electric crystal. In an arrangement for a pair of similar fluorescent lamps 1, 1, Fig. 1, connected in parallel lead and lag circuits 5, 5 and fed through main switch 7 from a supply auto-transformer 8, a crvstal member 12 of one or two elements is connected in series with filamentary electrodes 2, 2 in each starting circuit 10. A switch 11 has a resilient contact 16 operated by a motion multiplying arm 14 fixed to the " free " end of the crystal. Rapid opening and closing of switch 11 effects substantiallv instantaneous starting of the lamp. A condenser 13 in the " lag " circuit 5, tends to reduce the number of operations of switch 11. A glow discharge device 17, Fig. 2, in the starting circuit 10 may be used to open it after starting. In a modincation Fig. 4, the ballast 6 constitutes the secondary of a transformer having its primary 20 connected through the switch contacts, whereby a starting voltage is produced ; after starting, the winding 20 reduces the voltage in the circuit 10. Specifications 545,935, 559,898 and 569,685, [Group XL], are referred to. The system may be adapted for operation on D.C. by introducing means such as a buzzer for producing rapid intermittent current.
Patent GB-809105-A (GB)
Title: Processes for solubilising amorphous nystatin and compositions containing the same
IPC: A61K47/20
Filed: 1957-06-11
Abstract: A morphone or non-crystalline nystatin (fungicidin) is rendered water soluble by the incorporation in the composition of an anionic surfactant.  Sodium lauryl sulphate is the preferred surfactant but others such as the aryloxy polyalkylene ether sulphonates, e.g. sodium p-ter-octylphenoxy ethoxyethyl sulphonate, or sodium N-lauroyl sarcosinate may be used.  The ratio of nystatin to the anionic surfactant may vary between 1 : 1.5 and 1 : 5 parts by weight.  In the preferred process for producing the solubilized nystatin, non-crystalline nystatin is admixed with the surfactant, water is added and the pH of the solution adjusted to within the range 6-8, the solution is then filtered and freeze dried.  Specifications 714,189, 796,512 and U.S.A.  Specifications 2,115,192 and 2,628,187 are referred to.ALSO:Amorphous or non-crystalline nystatin (fungicidin) is rendered water-soluble by the incorporation in the composition of an anionic surfactant.  Sodium lauryl sulphate is the preferred surfactant but others such as the aryloxy polyalkylene ether sulphonates, e.g. sodium p-teroctylphenoxyethoxyethyl sulphonate, or sodium N-lauroyl sarcosinate may be used.  The ratio of nystatin to the anionic surfactant may vary between 1 : 0.5 and 1 : 5 parts by weight.  The compositions may be incorporated in tablets, vaginal suppositories or in ointments, especially ointments having a base formed of polyethylene and a mineral oil. In the preferred process for producing the solubilized nystatin compositions, non-crystalline nystatin is admixed with the surfactant, water is added and the pH of the solution adjusted to within the range 6-8, the solution is then filtered and freeze dried. Specifications 714,189, 796,512, [both in Group IV (b)], and U.S.A. Specifications 2,115,192 and 2,628,187 are referred to.