baber/WOPTO huggingface dataset:
Patent GB-574381-A (GB)
Title: Improvements in the production of sand moulds for metal casting
IPC: B22C1/22
Filed: 1943-01-22
Abstract: Foundry moulds are made from sand bound with melamine-formaldehyde or other aldehyde condensation product of an aminotriazine, one to several per cent being used.  There may also be added to the sand a similar amount of another binder, such as an aldehyde condensation product of urea or other carbamide, dextrin, sulphite cellulose waste liquor, cherry stone resin, or grape seed oil and a little water. Hardening may be expedited by adding an acid or acid-forming substance, such as formic or phosphoric acid or an ammonium salt of a strong acid.  To remove the water from the mould, before casting a substance capable of combining with water, e.g. phosphorous pentoxide or silica gel, may also be added to the sand, the former reacting with the water to supply acid desirable for hardening.  The mould or core may be polished with graphite directly after stoving, e.g. at 200 DEG -220 DEG  C., and when dry may be used for casting at once. 100 parts by volume of quartz sand, containing 2 per cent of water, may be mixed with 2.8 to 3.3 parts of dry, ground, water-soluble and hardenable melamine-formaldehyde, and about 0.72 part of formic acid, 85 per cent strength.  The acid is added after the mixing has been in operation about 7 minutes and after 10 minutes the mixture is ready for use.  The moulds harden at ordinary temperature but may be stoved.  Another example has less of the condensation products and formic acid but includes 0.25 parts of silica gel or of phosphorous pentoxide and 1.2 of water.  In another example 4 parts of the melamine product, 0.4 of acetic acid and 1.4 of water are added and in another 1 part of the melamine product, 1 of dextrine, 0.24 of formic acid, and 1.2 of water.  The aldehyde condensation products described in Specifications 455,008, 468,677, 486,519 and 486,577 may also be used.
Patent GB-157258-A (GB)
Title: Improvements in and relating to spark gaps for electromagnetic wave signalling systems
IPC: H01T9/00
Filed: 1921-01-10
Abstract: 157,258. Lowenstein, F. Aug. 25, 1914, [Convention date]. Spark-gap apparatus. -The elements of a multiple spark-gap apparatus for wireless signalling systems have cylindrical, conical, or spherical fluted surfaces, and the number of gaps in circuit is varied by means of a switch. The elements are easily removable, the sparking- space is air-tight, and the electrodes are cooled by air drawn over the surfaces of the electrodes by a fan. Each element consists of an inner copper sleeve 11, Figs. 2 and 3, mounted coaxially with an outer copper sleeve 10 by means of insulating rings 14 and collars 21 screwed to the sleeve 11. The outer surface 27 of the sleeve 10 and the inner surface 28 of the sleeve 11 are fluted; while the sleeves 10 and 11 are provided with staggered projections 10<a>, 11<a> respectively which prevent the copper particles which are detached during sparking from falling upon the insulating rings 14. The elements are attached to an insulating base 30, Figs. 4 and 6, provided with threaded sockets 31 adapted to receive the threaded ends 13 of the elements. The outer sleeves 10 of certain pairs of elements are connected as shown in Fig. 7 by means of projecting spring contacts 33, Fig. 6, and the connections are provided with switch contacts 37. The inner sleeves 11 of other pairs of elements are connected as shown in Fig. 7 and the connections are provided with switch contacts 36. A rotary switch arm 40, Figs. 4 and 7, connected to one terminal 35 of the apparatus is adapted to short-circuit one or more of the elements. A casing 42, carrying a fan 45, is secured to the base 30 and air is drawn by the fan through circular openings 46 over the surfaces 27, 28 of the elements.
Patent GB-157266-A (GB)
Title: Improvements relating to ribs and framing for floats, boats, and hulls of air craft
IPC: B64C35/00
Filed: 1921-01-10
Abstract: 157,266. Zeppelin-Werk Lindau Ges., and Dornier, C. Aug. 24, 1917, [Convention date]. Floats for aerial machines; framing.-The hulls of flying-machines, floats, and boats are built up of plain walls E, Fig. 6 secured to sheet-metal framing G. H, J having a #-shaped cross-section, as shown in Fig 2, the flanged edges of which are riveted direct to the plating. Transverse bulkheads are riveted to the sides of the framing and are strengthened by radially-arranged frame members L of #-shaped cross section. Where the framing meets at corners it is mitred and covered by shaped corner cover plates riveted to the sides of the framing; or, alternately, plain corner plates K are used. The framing may be lightened by holes in the sides.
Patent GB-1072271-A (GB)
Title: Refractory structures
IPC: C04B38/06
Filed: 1965-01-11
Abstract: A refractory shaped structure is produced by a process comprising forming a shaped article of a fugitive material and a composition consisting of (a) aluminium or aluminium alloy particles of - 45 mesh (U.S.S.), (b) refractory particles of - 20 mesh, there being 15-95% by weight aluminium and 85-5% refractory correspondingly, (c) at least 0.5% by weight, based on the Al weight, of a catalyst for the oxidation of Al, and (d) a binder to bond the fugitive material to the composition, then firing the shaped article in an oxygen-containing atmosphere at a temperature from 600 DEG  C. to the melting-point of the refractory material until at least 60% of the Al has been oxidized. The shaped article may be a self-supporting film or sheet of fugitive material not more than 2 mm. thick in the form of paper, cardboard, woven or non-woven fabrics of cellulose, polyethylene, polypropylene, polyethylene terephthalate, nylon, or glass or ceramic fibres coated on each side with a layer not more than 0.19 inch thick of the said composition, the latter being applied as an aqueous dispersion and dried before firing.  The binding agent for the fugitive material and composition may be sodium silicate, clay, sodium alginate, or sodium carboxymethyl cellulose. The catalyst may be an alkali metal oxide or hydroxide, an oxide of Ba or V, or an equivalent amount of a substance yielding the aforesaid on firing.  Suitable refractory materials are alumina, corundum, magnesia, magnesite, dolomite, clay, burnt clay grog, asbestos, silicon carbide or forsterite. Two or more shaped articles may be formed separately and then joined together before being fired. The products are characterized by a structure of thin-walled sections of thickness not more than 0.38 inch of a crystalline refractory material containing at least 25% alumina, having a uniform porosity of 20-70% and a flexural strength at 1550 DEG  C. of at least 130 p.s.i.
Patent GB-666953-A (GB)
Title: A process for the manufacture of linear organosilane polymers
IPC: C08G77/00
Filed: 1950-01-17
Abstract: Organo-silane linear polymers in which silicon atoms are joined by phenylene radicals and the remaining valencies are satisfied by chlorine or phenyl radicals, at least one phenyl radical being present, are made by heating to a temperature of 210-300 DEG  C. for hours or days a phenylchlorosilane of formula (C6H5)xSiCl(4-x), where x is from 1.5 to 2.9, in the presence of aluminium chloride. Condensation occurs with elimination of benzene.  The starting materials may be diphenyldichlorosilane or a mixture of all three or any two of phenyltrichlorosilane, diphenyldichlorosilane and triphenylchlorosilane.  The products range from viscous liquids to thermoplastic resinous solids.  In examples, the production of (C6H5Cl2Si)2C6H4, (mainly meta- and para-), C6H5Cl2SiC6H4SiCl3, (mainly meta- and para-), and higher polymers of formula Y3Si(C6H4SiYCl)nY, where Y is chlorine or phenyl and at least one Y is phenyl, is described.  In general mixtures of polymers are produced which are separated by distillation at reduced pressure. Specifications 646,584 and 646,629, [Group IV (b)], are referred to.ALSO:Organo-silane linear polymers in which silicon atoms are joined by phenylene radicals and the remaining valencies are satisfied by chlorine or phenyl radicals, at least one phenyl radical being present, are made by heating for hours or days to a temperature of 210-300 DEG  C. a phenylchloro-silane of formula (C6H5)xSiCl(4-x) were x is from 1.5 to 2.9, in the presence of aluminium chloride. Condensation occurs with elimination of benzene.  The starting materials may be diphenyldichlorosilane or a mixture of all three or any two of phenyltrichlorosilane, diphenyldichlorosilane and triphenylchlorosilane.  In examples, the production of (C6H5Cl2Si)2C6H4 (mainly meta- and para-), C6H5Cl2SiC6H4SiCl3 (mainly meta- and para-), and higher polymers of formula Y3Si[C3H1 SiYCl]nY, where Y is chlorine or phenyl and at least one Y is phenyl, is described.  In general, mixtures of polymers are produced which are separated by distillation under reduced pressure.  Specifications 646,584, [Group IV (a)], and 646,629 are referred to.
Patent GB-1093851-A (GB)
Title: Improved method of an apparatus for hardening felt
IPC: D04H17/00
Filed: 1965-01-12
Abstract: 1,093,851. Roller felting. COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION. Jan. 12, 1965 [Jan. 30, 1964], No. 1339/65. Heading D1R. A method of hardening a cylinder or tube of felt 6 comprises, positioning the felt between at least two rollers 5, 5 driving at least one of the rollers to cause rotation of the cylinder or tube and the other rollers and moving one of the rollers 12 to apply pressure to the felt cylinder or tube. The pressure applied by the movable roller may be variable periodically throughout the hardening operation. The felt may be constricted laterally by flanges on the felting rollers or by conical rollers urged against the ends of the cylinder. When hardening a felt tube, the inner surface may also be subjected to pressure by means of a roller positioned inside the tube or by means of a flexible core filled with fluid. At least one of the rollers may be ribbed to apply an intermittent force to the felt. The felt to be hardened may 'be distorted by the pressure of external rollers to effect a more efficient felting action. Several arrangements of rollers with a felt cylinder or tube therebetween are given.
Patent GB-1087934-A (GB)
Title: Improvements in or relating to benzylsulfamides
Inventor: HOULIHAN WILLIAM J
IPC: A61K31/18
Filed: 1965-01-12
Abstract: Novel benzylsulphamides of the formula <FORM:1087934/C2/1> wherein R1 to R5 represent H or Cl, at least one being Cl, and R6 is H or C1- 4 alkyl are mad by reacting a corresponding benzylamine with sulphamide. Alternatively, for the preparation of compounds wherein R6 is a C1- 4 alkyl group, corresponding N-R6-benzylamine may be reacted with sulphuryl chloride and the resulting N - benzylsulphamyl chloride reacted with ammonia.  Benzylamines used as starting materials are made by (a) catalytically hydrogenating a mixture of a benzaldehyde and an alkylamine R6NH2; (b) reacting a benzoyl chloride with an alkylamine R6NH2 and reducing the resulting amide; or (c) reacting the appropriate benzyl bromide with hexamethylene tetramine and decomposing the reaction product by hydrolysis.  2,3,6 - Trichlorobenzyl bromide is made by the action of bromine on 2,3,6-trichloro-toluene.  Pharmaceutical preparations having sedative, anti-convulsant and tranquillizing activity comprise the above compounds of the invention and a diluent suitably in the form of tablets, dragees, injectable solutions or suppositories.
Patent GB-1166432-A (GB)
Title: Improvements in or relating to Universal Roll Stands
IPC: B21B31/10
Filed: 1968-01-10
Abstract: 1,166,432. Rolling. SIEMAG SIEGENER MASCHINENBAU G.m.b.H. 10 Jan., 1968 [14 Jan., 1967], No. 1412/68. Heading B3M. The horizontal rolls 1 of a universal stand 7 are replaceable by sliding a subframe 8, which carries the rolls, out of the stand on rails 9, removing the upper roll 1, and lifting the subframe off the lower roll 1. A pair of edging rolls 2 are retained in position in the subframe during these steps. The subframe may then be lifted on to a replacement lower roll, be provided with an upper roll, and be repositioned within the stand.
Patent GB-554668-A (GB)
Title: Carrier-signal receiver
IPC: H03J7/04
Filed: 1942-02-03
Abstract: 554,668. Wireless receiving apparatus. HAZELTINE CORPORATION. Feb. 3, 1942, No. 1434. Convention date, Jan. 23, 1941. [Class 40 (v)] In a carrier signal receiver a selector of variable band width is provided having initially a pass-band wide enough to include the signal with deviations with means to reduce the deviations and simultaneously to contract the width of the band passed by the selector. The Figure shows a receiver which includes ultra high frequency ranges and is pushbutton operated. The pass band of the amplifier 14 may be contracted in accordance with the bias applied thereto as described in Specification 484,137 and the time constant of the contacting means is preferably at least as long as the time constant of the deviation-reduction means. The invention is described as applied to an amplitude modulated signal but is applicable to frequency modulated or to single sideband signals. Specification 527,968 also is referred to.
Patent GB-210080-A (GB)
Title: Improvements in keys for winding up spring motors
IPC: G04B3/02
Filed: 1924-01-18
Abstract: 210,080. Thornton, A. A., (Handelsvennootschap onder de firma Vereenigde handels- Cie). Jan. 18, 1924. Spring power-storing mechanism. - In order to prevent overwinding of a spring motor for a gramophone &c., the part 2, Fig. 1, of the -winding- handle is formed with rounded clutch teeth 7 so that it can slip relatively to the part 3 when a certain resistance is encountered, the parts 2, 3 being pressed together by a spring 4, the pressure of which can be regulated by a nut 6. In a modification, the nut 6 is replaced by a capnut 9, Fig. 3, and the pressure of the spring 4 is regulated by a nut 12 engaging a screwed portion of the winding-spindle 1 and bearing against a sleeve 11, which can slide on the part 1 but cannot rotate relatively to it.
Patent GB-1085469-A (GB)
Title: Improvements in radio-locating systems
IPC: G01S1/30
Filed: 1965-01-13
Abstract: 1,085,469. Radio distance-measuring systems. COMPAGNIE GENERALE DE GEOPHYSIQUE. Jan. 13, 1965 [Jan. 31, 1964], No. 1578/65. Heading H4D. In a radio distance-measuring system a station A transmits frequencies F 1 , F 2  and receives a frequency F<SP>1</SP> where F 1  plus or minus F 2 , =F, is slightly different from F<SP>1</SP>. Thus the inherent difficulty in transmitting frequency F and receiving frequency F<SP>1</SP> at the same station is circumvented. In the embodiment station A also radiates a frequency F 3  amplitude-modulated at frequency F - F<SP>1</SP>, a station B radiates frequency F<SP>1</SP> and forms frequency F - F<SP>1</SP> by reception from station A to modulate a frequency F 4 , and at a station C the distance from A to B is obtained by measuring the phase between the detected waves of carrier frequencies F 3 , F 4 . Station C may be located at station A, certain parts of the latter not then being necessary. A station D, similar to station B but utilizing a frequency F 5  modulated at frequency F - F1, may be added for determining the distance from A to D.
Patent GB-662055-A (GB)
Title: Treatment of leather "cut soles" to improve the flexibility thereof in the dry state
IPC: C14C9/02
Filed: 1949-01-21
Abstract: 662,055. Softening cut leather soles. COLLINSON, R. J. Nov. 16, 1949 [Jan. 21, 1949], No. 1686/49. Class 17 (ii). Cut soles of tanned leather are made more flexible and less hard in the dry state by agitating the soles for not less than two hours in a bath containing water and a limited quantity, e.g. 5 per cent, of a softening and lubricating agent, especially sulphonated neatsfoot oil, and permitting the cut soles to dry. Preferably, the cut soles are subjected to a preliminary treatment with water for e.g. 3 hours, whereby at least a proportion of the soluble tan is removed. After drying the cut soles may be subjected to a mechanical flexing treatment and, if they are to be secured to uppers by an adhesive, are subsequently partially roughened on the flesh side by passing them through a roughening machine. The sulphonated oil may be used in conjunction with the unsulphonated oil and/or with a mineral oil, especially in the form of an aqueous emulsion with a non-ionic dispersing agent.
Patent GB-625936-A (GB)
Title: Improvements in or relating to contact assemblies for electric contactors, switchgear and the like
IPC: H01H11/06
Filed: 1947-01-20
Abstract: 625,936. Switch contacts. HUMPHREYS, M. N. Jan. 20, 1947, No. 1742. [Class 38(v)] A contact-carrying arm for a switch comprises two insulating parts 10, 11 secured together with a contact or contactsupporting rocker 12 sandwiched between them. The rocker is pivoted at 13 and is urged outwardly by a spring 16, the rocker and the spring being received in recesses in the parts 10, 11. These parts are secured together and to a bar 34 by means of a screw 18 co-operating with two plates in a slot 20 in the parts 10, 11, as described in Specification 625,935, [Group XXII]. Outward movement of the rocker 12 is limited by a flared portion 22 of the parts 10, 11, which have a co-operating projection and recess 23, 23a, and a recess 14 on part 10 co-operating with a projection (not shown) on part 11.
Patent GB-575941-A (GB)
Title: Improvements in concrete structures
IPC: E04B7/04
Filed: 1944-01-31
Abstract: 575,941. Roofs. MATHEWS, C. B., and AMBROSE, J. G. Jan. 31, 1944, No. 1765. [Class 20 (iv] A roof is formed from precast reinforced concrete beams 1 having recesses along their top face into which are fitted the sides of bowed slabs 3. Grouting mortar 4 is placed above the slabs to form a flat surface and cords are placed in the recesses and withdrawn before the mortar has fully set so as to form channels 5 for any water seeping through the joints. The upper face of the rib of the beam is recessed longitudinally for drainage purposes.
Patent GB-159395-A (GB)
Title: Electrically propelled vehicle
IPC: B60M7/00
Filed: 1920-01-20
Abstract: 159,395. Hansen, J. H. Jan. 20,1920. Electric equipment.-The vehicle carries two accumulators, one of which is in circuit with an electric motor 4 geared with the driving-wheels while the other 8 is in circuit, through an interposed charging rheostat 10, with a dynamo 6 driven by the trailing-wheels. Switches 9, associated with the accumulators, are so arranged that when the accumulator in circuit with the motor is discharged, it may be put in circuit, through the rheostat, with the dynamo, and the other accumulator may be put in circuit with the motor.
Patent GB-984027-A (GB)
Title: Improvements in or relating to steroids
IPC: C07J75/00
Filed: 1963-01-15
Abstract: The invention comprises compounds of the general structural formulae <FORM:0984027/C2/1> wherein R is an alkyl radical containing 1-5 carbon atoms, R1 is a hydrogen atom or an alkanoyl radical containing 2-6 carbon atoms, and the dotted line indicates the optional presence of a double bond between carbon atoms 6 and 7.  These compounds are obtained by treating the 17a -(alkanoyl) oxy-6a -methyl-pregn - 4 - ene - 3,20 - diones and the corresponding 6-dehydro compounds with a reducing agent, e.g. lithium tri-(t-butoxy) aluminium hydride, lithium aluminium hydride, potassium borohydride and sodium borohydride.  Reaction of the 3 b -ols with an acylating agent gives the corresponding 3b -alkanoates.
Patent GB-546434-A (GB)
Title: Improvements in chain gearing
IPC: F16H7/06
Filed: 1941-02-11
Abstract: 546,434. Chain wheels. VAUXHALL MOTORS, Ltd., and DREW, H. Feb. 11, 1941, No. 1827. [Class, 80 (i)] Consists in chain gearing in which the teeth of the chain wheel are so shaped that the chain is under-pitched when the wheel is driving, and. is over-pitched when it is driving the wheel. According to the invention, the centres of the radii of the roots of the teeth lie on a circle of such radius that the pitch of the centres is greater than the pitch of the chain when the wheel is driving, and lie on some smaller circle whose radius is such that the pitch of the centres is less than the pitch or the chain when the. chain is driving. The wheel 1, Fig. 1, is supposed to be rotating counter-clockwise and to be driving the chain 3. The wheel teeth 2 have faces 5 for driving the chain and faces 6 for being driven thereby. The teeth are so formed that the centres of the radii of the roots on the driving faces 5 lie on a circle of such radius that the pitch of the centres is greater than the pitch of the rollers 4 of the chain, whereas on the faces 6, for driving the wheel, the centres are on a smaller circle so that their pitch is less than the pitch of the rollers 4. In Fig. 2 the chain is driving the wheel.
Patent GB-126262-A (GB)
Title: Improvements relating to Apparatus for use in the Extraction of Oils, Fats, Sugar and so forth from Materials Yielding the same.
Inventor: RAEDT JEAN DE
IPC: C11B1/10
Filed: 1919-01-24
Abstract: 126,262. Raedt, J. de. Jan. 24, 1919. Fatty oils, extracting by solvents. In apparatus for extracting fats, oils, sugar, and the like by means of solvents in an oscillated container, the inlets and outlets 5, 13 for the solvent or other fluid are arranged along the top and bottom of the drum 1, and are connected to the main supply pipes P by flexible tubes 10. Filters comprising mats 20 held between perforated plates 19 may be arranged a short distance from the inlets and outlets. Compartments are formed in the drum by porous or perforated plates 18, and steam-heated coils may be arranged below each division. The drum is filled and emptied through doors 21. In the preferred method of working, hot solvent vapour is admitted to the exhausted charged drum before any liquid solvent, and the residual solvent is removed by hot steam generated from air-freed water.
Patent GB-245603-A (GB)
Title: Improvements in house construction
IPC: E04D3/26
Filed: 1925-01-21
Abstract: 245,603. Moss, E. W., (Anglo-Canadian Housing Co., Ltd.). Jan. 21, 1925. Building slabs, special shapes of; roofing slabs. -The walls and roof of a slab building are formed of concrete slabs 4, Fig. 1, having offsets 7, 8 on their upper and lower edges, and a rib 6 which is inclined and engages notches in the uprights of the wall framing and the rafters. The meeting edges of the offsets may be serrated as shown in Fig. 2, and the slabs may be reinforced with a wire mesh 5. The eaves slabs are formed in one with a gutter 9 and are provided with diagonal ribs 10 to deflect snow and rain. Nailing cleats may be embedded in the slabs.
Patent GB-1063572-A (GB)
Title: A process for preparing new triamcinolone esters
IPC: C07J5/00
Filed: 1965-01-15
Abstract: wherein R1 is a hydrogen atom or a C1- 3 alky or phenyl group, R2 is a hydrogen or halogen atom or a hydroxy, nitro, C1- 3 alkyl, C1- 3 alkoxy or benzyloxy group, R3 is a hydrogen or halogen atom or a C1- 3 alkoxy or nitro group, R4 is a hydrogen atom or a C1- 3 alkoxy group and X is a group -CH2CH2O-, -CH2CH2-, or -CH=CH-, and their preparation by (a) reaction of triamcinolone 16a , 17a -acetonide with a reactive derivative of an appropriate carboxylic acid or (b) reacting a 21-halide of triamcinolone 16a , 17a -acetonide with an alkali metal or silver salt of an appropriate carboxylic acid.ALSO:Pharmaceutical compositions having glucocorticoid and antiphlogistic activity comprise, in combination with a carrier, a compound of formula <FORM:1063572/A5-A6/1> wherein R1 is a hydrogen atom or a C1-3 alkyl or phenyl group, R2 is a hydrogen or halogen atom or a hydroxyl, nitro, C1-3 alkyl, C1-3 alkoxy or benzyloxy group, R3 is a hydrogen or halogen atom or a C1-3 alkoxy or nitro group, R4 is a hydrogen atom or a C1-3 alkoxy group and X is a group -CH2CH2o-, -CH2CH2- or -CH=CH-.  The compositions may be in forms suitable for topical administration and may contain hexachlorophene.