baber/WOPTO huggingface dataset:
Patent GB-760141-A (GB)
Title: Improvements in or relating to devices for modulating and/or amplifying electric signals
IPC: H03D1/00
Filed: 1954-03-01
Abstract: 760,141. Piezo-electric crystals. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 1, 1954 [March 4, 1953], No. 5913/54. Class 40 (8). [Also in Group XL (c)] A piezo-electric member 5 for use in a carrier modulator (see Group XL (c)) is tubular and has annulus outer electrodes b1, b2 fed from a carrier source 6, annular outer electrodes k to which modulating signals are applied and an inner electrode 7 which may be biased from a source 8. The piezo-electric material is barium titanate which may be blended with other titanates or with zirconates or stannates. Or it may be lead zirconate or tantalates or niobates, having an electro-mechanical coupling factor depending upon the applied voltage, from which tubes and rods of poly crystalline structure can be formed by sintering. In order to secure a high coupling factor, the device is polarized by applying, between the outer and inner electrodes, a D.C. voltage of several thousand volts per mm. for several hours. To increase the electro-mechanical coupling factor the frequency of the carrier source 6 is made equal to a harmonic of the fundamental mechanical vibration frequency of the member 5 which is supported by points 9 at a nodal plane. Alternatively sponge rubber supports may be situated at two nodal planes on each side of the centre. The carrier may be provided by applying a travelling mechanical pulse wave to one end of member 5 which is clamped at the other end in damping material.
Patent GB-836901-A (GB)
Title: Improvements in pipe couplings
Inventor: LOBELLE MARCEL JULES ODILON
IPC: F16L19/04
Filed: 1957-02-21
Abstract: 836,901. Pipe couplings. M. L. AVIATION CO. Ltd. Feb. 20, 1958 [Feb. 21, 1957], No. 5914/57. Class 99(1). In a coupling of the type comprising an externally screw threaded member 3 and an intermediate olive 6 which mates with the member 3 and engages in a bell-mouth 9 of a pipe 10, the bell-mouth and olive being brought into contact with each other by a ring 13 fitted over the bell-mouth and a nut 15 screwed on to the member 3, the curvatives of the mating surfaces of the olive, member 3 and bell-mouth in the region of each area of sealing contact are unequal. As shown, the olive is formed with an external convex annular shoulder 8 engaging the internal conical surface of the bell mouth and with a socket 11 having an annular convex shoulder 12 which accommodates a male coned end 5 formed on the member 3. In a modification, not shown, the member 3 has a female coned seating which accommodates an external convex annular shoulder on the olive.
Patent GB-503816-A (GB)
Title: Improvements in sensitive material for three-colour photography
IPC: G03C7/30
Filed: 1937-07-07
Abstract: 503,816. Colour photography. KODAK, Ltd., July 7, 1937, No. 6036/39. Convention date, July 7, 1936. Divided out of 503,752, and addition to 500,826. [Class 98 (ii)] Multilayer sensitive material as described in Specification 500,826 has colour formers insoluble in water or in a solution of sodium carbonate in water, incorporated in some- or all of the layers. Suitable compounds are disclosed in Specification 503,752. Three colour formers which give rise to the three subtractive colours with the same developer may be used, one in each of the three layers. Alternatively, one or more of the layers may contain the formers and the remainder may be developed to colour by the processes described in Specifications 458,664, 498,869, 498,870, 498,871, and 498,875. The colour former may be added to the emulsion or dispersed in gelatine for addition to the emulsion, and may be adsorbed to the silver halide grains as described in Specification 376,794. The colour former may also be formed within the ripened emulsion or within an emulsion of reduced gelatin content to which gelatin is subsequently added. It may also be precipitated in oentrifuged silver bromide emulsion or in silver bromide separated from an emulsion, the product being afterwards dispersed in gelatine. The coloured images may be obtained by direct development, reversal development, or redevelopment of a layer initially developed to silver and bleached to silver halide. The processing methods described in Specifications 503,752, and 503,824 may be used. A sound record may be printed in any of all of the layers or in an additional layer sensitive to infra-red. A filter of soluble colloid such as dextrin, gum arabic, or stearic acid, dyed yellow, and an antihalation layer of colloidal silver in a water permeable binder may also be included. Specification 376,794 also is referred to.
Patent GB-656892-A (GB)
Title: Improvements in heat radiators
IPC: F28D1/053
Filed: 1948-02-27
Abstract: 656,892. Radiators. for heating buildings. STURTEVANT ENGINEERING CO., Ltd., and STEVENS, M. F. Feb. 27, 1948, No. 6082.[Class 64(ii)] In a heat radiator, a number of radiating elements such as plates 4 are mounted on parallel heating pipe lengths 3, being individually adjustable about the axes of these pipes, and the breadths of the elements at right-angles to the pipes are such that the elements can be positioned to form a substantially continuous radiating surface. As shown, the plates 4 are mounted on pipes 3 interconnecting a header 2 and another header (not shown) and are heated by hot fluid flowing through the pipe system. Each plate is bolted to a narrower backing plate 6 with a pipe length between and may be backed with insulation 5. Two structures, such as that shown, arranged back-to-back produce an elliptical radiator, other structures produce circular or rectangular radiators. In a modification, the pipe lengths are parallel runs of a continuous pipe of sinuous form. The plates 4 may be curved.
Patent GB-271947-A (GB)
Title: Improvements in or relating to vehicle wheel rims and fittings therefor
IPC: B60B21/02
Filed: 1926-03-04
Abstract: 271,947. Sloper, T. March 4, 1926. Devices for adapting holes in wheel rims for use with different types of valve stems.-A device for adapting the hole in a wheel rim to take a smaller size of valve stem is formed with flanges B<2> to engage the undersurface of the rim and with soft metal tongues C<1>, C<2> adapted to be folded down on to the rim. In the form shown in Fig. 3, the device comprises a hard metal body A<4> with a softer metal casing A<5> from which the tongues C<1>, C<2> are shaped.
Patent GB-416268-A (GB)
Title: Improvements in apparatus for vulcanizing pneumatic tyres
IPC: B29D30/06
Filed: 1934-02-24
Abstract: 416,268. Vulcanizing tyres. ROUSSILLON, P., 11, Avenue Legrand, Argenteuil, Seine-et-Oise, France. Feb. 24, 1934, No. 6111. Convention date, Feb. 27, 1933. [Class 70.] Pressure is applied to a tyre cover during vulcanization by means of a chamber capable of being put undei pressure, and having a deformable outer wall which enters the tyre when the mould is closed. The tyre is placed in the lower half 3, Fig. 2, of a mould surrounding an annular chamber 22 consisting of dia. phragms 20, 21 clamped to rings 14, 15 which can be brought together or separ. ated. On closing the mould the rings are pressed together, and the diaphragms take up the positions shown in Fig. 1. Pressure fluid is then admitted by the pipe 23. In a modification, the inner diaphragm 21 is replaced by a U-packing between the sliding parts 9, 10.
Patent GB-339886-A (GB)
Title: Improvements in hollow floating structures more particularly boat hulls, seaplane bodies and the like
IPC: B63B3/00
Filed: 1930-02-24
Abstract: 339,886. Saunders, S. E. Feb. 24, 1930. Fuselages.-Flying boat and aeroplane bodies are formed with an outer plywood skin 2 applied to a framework of hollow non-corrosive metal members 7 to which an inner skin 4 may be applied. The stitching 3 uniting the plywood may be carried round the frame members 1. The frame members 7 may further be flanged to facilitate the attachment of the inner skin. Specification 338,078 is referred to.
Patent GB-250726-A (GB)
Title: Process for the separation and purification of platinum and other platinum metals from platiniferous ores and substances
IPC: C22B5/20
Filed: 1925-03-06
Abstract: 250,726. Hooper, L. D. March 6, 1925. Dry processes of extracting platinum group metals. - Platinum and other platinum group metals are separated from ores, concentrates, and other materials by subjecting the materials to the action of carbon monoxide in the presence of catalytic or other materials under such conditions that carbonyl compounds of the platinum group metals are formed. The material present with the carbon monoxide in the formation of the carbonyl compounds may be a halogen, particularly chlorine, together with a halide of an alkali or alkaline earth. Phosgene may be used; or carbon monoxide may be applied alternately with a substance such as chlorine. In some cases the ore to be treated may be preliminarily ground with a deflocculating or like agent such as gallotannic acid. The carbonyl compounds may be separated from the ores &c. and from each other by volatilization or solution and may be decomposed by heat with or without reaction with water. An ore containing platinum and other platinum group metals may be treated with carbon monoxide or acid for removal of the iron and other easily attached metals; the remaining ore may then be heated with sodium and with carbon monoxide and chlorine, yielding mixed sublimates which are again treated with carbon monoxide for the production of a single carbonyl compound of platinum. Carbonyl compounds of the other platinum group metals are obtained from the remaining ore by treatment with carbon monoxide under different conditions of temperature and pressure and in the presence of different reagents.
Patent GB-608697-A (GB)
Title: Improvements in and relating to the preparation of catalysts
IPC: B01J23/70
Filed: 1946-02-27
Abstract: In the preparation of stabilized catalysts by subjecting a composition containing an oxygen compound of a catalytic metal to reduction with hydrogen or vaporous alcohols, e.g. methanol or ethanol, and then treating the product with an oxidizing agent, e.g. air, to produce a superficial oxidation, at least one of the stages is conducted with the material under treatment maintained as a fluid bed.  An inert gas, e.g. nitrogen, may be passed through the material during each stage, and hydrogen or oxygen added in increasing quantities, so that the temperature does not rise too high.  The two stages may be carried out in the same or in different vessels.  In an example, a nickel-on-kieselguhr catalyst, which may be used for the hydrogenation of furfural or furan, is prepared from nickel carbonate deposited on kieselguhr, the temperature during reduction being 400-450 DEG  C., and during oxidation below 60 DEG  C.  Reference is also made to the preparation of cobalt-on-kieselguhr and copper-on-silica gel catalysts.ALSO:A composition containing an oxygen compound of a catalytic metal is subjected to reduction with hydrogen or vaporous alcohols, e.g. methanol or ethanol, and then treated with an oxidizing agent, e.g. air, to produce a superficial oxidation, at least one of the stages being conducted with the material under treatment maintained as a fluid bed.  An inert gas, e.g. nitrogen, may be passed through the material during each stage, and hydrogen or oxygen added in increasing quantities, so that the temperature does not rise too high.  The two stages may be carried out in the same or in different vessels.  In an example, a nickel-on-kieselguhr catalyst, which may be used for the hydrogenation of purfural or furan, is prepared from nickel carbonate deposited on kieselguhr, the temperature during reduction being 400 DEG -450 DEG C., and during oxidation below 60 DEG C. Reference is also made to the preparation of cobalt-on-kieselguhr and copper-on-silica gel catalysts.
Patent GB-410934-A (GB)
Title: Suspension and steering device for motor vehicles having independent wheels
IPC: B60K17/30
Filed: 1933-02-28
Abstract: 410,934. Motor vehicles; steering- gear; spring suspensions. DEWANDRE, A., 2, Rue du Vieux-Mayeur, Liege, Belgium, and LIENHARD, G. M., 6, Rue Leon Vaudoyer, Paris. Feb. 28, 1933, No. 6164. Convention date, Feb. 29, 1932. [Classes 79 (ii) and 79 (v).] In steering gear for independently sprung front wheels having stub axles with lower arms 18 pivoted to the ends of a transverse spring 12 and upper arms 19 pivoted at the ends of oblique links 22, 23, pivoted at 24, 25 to the chassis frame, the stub axle steering arms 26 are each controlled by a rod 27 pivoted to a branch of a forked lever 28, the rods 27 being each equal in length to the effective length of each half of the suspension spring, so that flexure of the spring does not affect the steering. The lever 28 has an arm 30 connected by a link to the usual steering lever or drop arm. The lower stub-axle arm 18 can swivel round a pin 17 fixed to a socket 16 having a bracket 15 connected by a pin 14 to the end of the spring 12. The steering wheels are driven by cardan shafts 9 from a differential gear 7 mounted on a transverse frame member 6 to which the spring 12 is bolted. Universal joints 8 and double joints 11 are provided at the ends of the shafts 9.
Patent GB-900067-A (GB)
Title: Board for a board-type hammer
Inventor: PALMER HENRY
IPC: B21J7/36
Filed: 1961-02-21
Abstract: 900,067. Friction drop hammers. BRETT'S STAMPING CO. Ltd. Feb. 21, 1961, No. 6269/61. Class 83 (4). The friction board 10 of a board-type drop hammer has its friction surfaces faced with separate sheets 13 of a tough material having a low flow rate and high coefficient of friction. The sheets 11 are preferably of fibre and are secured in recesses 11, 12 of a laminated board of Danish beech, by an epoxy resin adhesive assisted by countersunk head copper rivets; slight side clearance is provided between the sheets. In another embodiment, Figs. 2, 3 (not shown), the sheets extend diagonally across the board and are fitted in separate recesses separated by lands. The sheets on opposite sides of the board extend in diagonally opposite directions.
Patent GB-774939-A (GB)
Title: Improvements in or relating to washing machine control mechanism
IPC: D06F37/42
Filed: 1955-03-03
Abstract: 774,939. Washing machines. BORGWARNER CORPORATION. March 3, 1955 [March 4, 1954], No. 6300/55. Class 138 (2). [Also in Group XIII] A washing and spin drying machine is provided with a door 21 hinged at 42 and giving access to a rotatable tub (not shown), the operation of the machine being automatically interrupted by opening of the door during the spin drying cycle but unaffected by opening of the door during the washing cycle. The door 21 carries a lever 36 the end 37 of which is adapted to bear on a bracket 31 carrying a mercury switch 30 and pivoted to a bracket 32. During washing, an agitator (not shown) is driven by a reversible electric motor, and a relay (not shown) is energized to close a switch which short-circuits the mercury switch 30. During spin-drying this motor is reversed and rotates the tub to spin dry the clothes, the relay being unenergized. The invention may be applied to the machine described in Specification 718,836, provided with a sequence controller as described in Specification 710,541, [Group XXXVII].
Patent GB-1106267-A (GB)
Title: Manufacture of phenolic derivatives
IPC: C08G61/02
Filed: 1967-02-09
Abstract: A phenolic derivative of a copolymer containing 20-80 mol per cent of isoprene, the derivative being cyclized and containing 5 to 50% by weight of a bound phenol, is prepared by reacting the phenol with the copolymer at a temperature between 70 DEG  C. and 250 DEG  C. in the presence of an acidic agent.  The preferred copolymer is a copolymer of butadiene and isoprene and is reacted with phenol.
Patent GB-125713-A (GB)
Title: Improvements in and relating to Milling Machines.
Inventor: ELLERY ROBERT LUCAS
IPC: B23C3/32
Filed: 1918-04-15
Abstract: 125,713. Ellery, R. L. April 15, 1918. Milling helical surfaces.-In a machine for cutting helical grooves and clearance in drills, reamers, &c., the work, in the case shown, a drill blank a is mounted upon a shaft 37, which is housed in bearings 35, 36 on an inclined standard, and is rotated by worm and bevel gearing 45, 47, 49, 53 driven by belt gearing, and is moved forward longitudinally during its rotation by means of a pin mounted in a sleeve 38 angularly adjustable for different grooves, which engages a helical groove in the shaft 37. The blank a is simultaneously acted upon by a milling groove cutter 8 and a clearance cutter 30. The shaft 5 of the cutter 8 is mounted in an eccentric bush 4, Fig. 7, in a sleeve 6 carried by a hand-operated transverse slide 3, and is rotated by toothed gearing driven from a belt-operated shaft 9. The spindle 28 of cutter 30 is driven by belt gearing and is mounted on an axially-movable slide 23 mounted upon an inclined side of a wedge-shaped slide 19 which can be moved in two directions at right angles. After a predetermined movement of the shaft 37, a collar 63 thereon engages a slide 62 to rotate the eccentric 4 to reduce gradually the depth of the grooves, and to withdraw a catch 56 to enable a spring to throw the driving-worm 47 out of gear, the head 48 carrying the gearing being pivotally mounted for this purpose.
Patent GB-908883-A (GB)
Title: Improvements in rock drills
IPC: B25D9/08
Filed: 1961-02-21
Abstract: 908,883. Percussive tools. INGERSOLLRAND CO. Feb. 21, 1961 [Feb. 29, 1960], No. 6385/61. Class 124. [Also in Group XXVI] A fluid-actuated tool comprises a casing 30 having a chamber 32, a sleeve 34 reciprocable in the chamber, a piston 36 reciprocable in the sleeve, and an implement 40 having an end extending into the casing to be actuated by the piston. Fluid is supplied to a distribution chamber 46 through a hose 44 and valve 42, and is discharged from the chamber 32 through an exhaust 48. An anvil 38 interposed between piston and implement is slidable in a retainer 57. The wall 50 of the chamber 32 has exhaust ports 58, 60, 62, 64 connected to the exhaust, and inlet ports 66, 68, 70 connected with the distribution chamber. The sleeve has inlet ports 74 and inlet and outlet ports 76, 78. A chamber 84 between the wall and sleeve is constantly connected to the distributing chamber through the ports 68, the pressure on shoulder 90 constantly urging the sleeve forwardly towards the implement. Fig. 1 shows the position of the elements of the tool at the beginning of a working cycle and immediately after the piston has struck the anvil, fluid then being supplied to the interior of the sleeve through ports 66, 76 to force the sleeve rearwardly against the pressure on the shoulder 90. As the sleeve moves rearwardly the fluid entering the sleeve halts the rebound of the piston and returns it to contact the anvil. Further rearward of the sleeve to the position shown in Fig. 8 opens ports 74 (connected to the inlet ports 70) to move the piston rearwardly, the fluid above the piston being exhausted through ports 76, 60. The speed of the sleeve decreases since the inlets 66 are closed, the sleeve finally stopping its rearward motion when the ports 58 are partially closed. The sleeve is urged forwardly by the pressure on the shoulder, and by the pressure of fluid from the port 70 on the foot 116 of the sleeve. As the sleeve is moved forwardly to the position shown in Fig. 10, the piston continues to move rearwardly fluid being supplied through ports 70, 78 to move the piston. The pistons final rearward movement within the sleeve is cushioned by fluid trapped at the end of the sleeve. As the sleeve continues to move forwardly, the ports 78 are connected to the exhaust port 62 so that the resilience of the cushion starts the piston to move forwardly within the sleeve to open the ports 76 to drive the piston from the position shown in Fig. 13 to the position shown in Fig. 1 to end the cycle. The rearward stroke of the piston is slower than the forward stroke since ports 70 are smaller than ports 66. In the event of the implement striking a soft spot the piston is cushioned by compressing fluid in the sleeve below the ports 74. The anvil is prevented from striking shoulder 110 of the retaining by fluid supplied to a chamber 100. Vibration caused by the moving elements of the tool is prevented from being transferred to the casing by the fluid in the chamber 84.
Patent GB-917099-A (GB)
Title: Haloalkylamines and processes for their production
IPC: C07C209/74
Filed: 1960-02-24
Abstract: The invention comprises compounds of the general formula <FORM:0917099/IV (b)/1> (wherein R1 represents a hydrogen or halogen atom or a hydroxy or C1-3 alkyl group, R2 represents a hydrogen atom or a methyl group, Alk represents a straight or branched chain alkylene group of 2 or 3 carbon atoms, and Hal represents a chlorine or bromine atom) and their acid addition salts, and the preparation thereof by (a) reacting a compound of the general formula <FORM:0917099/IV (b)/2> with a substance capable of replacing the aliphatic hydroxy group by chlorine or bromine, or (b) reacting a compound of the general formula <FORM:0917099/IV (b)/3> with a halocarbonyl compound under hydrogenating condensation conditions. When hydrochloric or hydrobromic acid is used in process (a) and the product is to have R1=OH, the starting material may have R1=OCH3, this being hydrolysed to OH in the course of the reaction.  The products are central nervous system stimulants.  1 - (p - Chlorophenyl)-2-(21-hydroxyethyl-11-amino)-propane is prepared by hydrogenating condensation of ethanolamine with p-chlorobenzyl methyl ketone, obtained by destructive distillation of a mixture of calcium p-chlorophenylacetate and calcium acetate.  1 - (p-Methoxyphenyl)-2-(21-hydroxyethyl-11 -amino)-propane is similarly prepared from p-methoxyphenylacetone.
Patent GB-378810-A (GB)
Title: An improvement in or relating to placards for advertising purposes
IPC: G09F7/02
Filed: 1932-03-04
Abstract: 378,810. Moving signs. TEICHERT, H., 53, Drakestrasse, Lichterfelde, Berlin. March 4, 1932, No. 6516. Convention date, March 5, 1931. [Class 3 (i).] In advertising devices in which letters &c. are each formed of two or more parts one or all of which can be moved out of alignment with the others to form an indecipherable jumble, and then brought back to read clearly, the letters &c. b, bl are carried by panels a mounted removably and exchangeably in slots g in a base f. The movable parts b of the letters are each attached to a spindle d extending through the panel a and connected at the rear to the short arm of a bell crank e, the longer arm of which is connected to a perforated plate h. A plate h is provided for each line of panels a, and all are reciprocated vertically by a frame k.