baber/WOPTO huggingface dataset:
Patent GB-607772-A (GB)
Title: Improvements in or relating to the production of 1-(3,4-dihydroxyphenyl)-2-amino-1-butanol and new intermediates thereof
Filed: 1945-04-13
Abstract: Aminoketones of general formula:-<FORM:0607772/IV(b)/1> or acid addition salts thereof, wherein R represents substituted or unsubstituted diaryl-methyl and R1 and R11 represent hydrogen or arylmethyl, are obtained by treating a substituted phenone of general formula:- <FORM:0607772/IV(b)/2> wherein X represents chlorine or bromine, with a primary amine of general formula R-NH2, e.g. benzhydrylamine.  The resulting product or its acid addition salt is hydrogenated catalytically to obtain a -amino-(3 : 4-dihydroxyphenyl(-butyrophenone, complete hydrogenation yielding 1-(3 : 4-dihydroxyphenyl)-2-amino-1-butanol which possesses therapeutic properties.  Advantageously, palladium is used as catalyst and, while benzyl groups are preferred, other protecting arylmethyl groups, e.g. p-chloro-, p-methoxy- or p-methylbenzyl may be used. Examples are given of the preparations of: (1) a -benzhydrylamino-3 : 4-dibenzyloxybutyrophenone hydrochloride by heating under reflux a -bromo-3 : 4-dibenzyloxybutyrophenone with benzhydrylamine in absolute alcohol and subsequent treatment with dilute hydrochloric acid; (2) 1-(3 : 4-dihydroxyphenyl)-2-amino-1-butanol hydrochloride by reducing the product of (1) in absolute alcohol with hydrogen in presence of palladium sponge absorption of three moles yielding a -amino-(3 : 4 - dihydroxyphenyl) - butyrophenone hydrochloride which is either further hydrogenated in aqueous solution to obtain the requisite product or converted to and isolated as the free base. a -Bromo-3 : 4-dibenzyloxybutyrophenone is obtained by treating 3 : 4-dibenzyloxybutyrophenone with bromine in presence of methylene chloride and calcium carbonate.  3 : 4-Dibenzyloxybutyrophenone is obtained by heating under reflux a mixture of 3 : 4-dihydroxybutyrophenone, benzylchloride, anhydrous potassium carbonate, sodium iodide and alcohol.  3 : 4-Dihydroxybutyrophenone is obtained by treating catechol in chlorobenzene with n-butyryl chloride in presence of anhydrous aluminium chloride.
Patent GB-1006190-A (GB)
Title: Shaped articles
IPC: F16C33/00
Filed: 1963-03-08
Abstract: An inflexible article is shaped from a thermally stable polyoxymethylene resin and from 5 to 40% of polytetrafluoroethylene fibres of up to 1.6 mm. in length uniformly dispersed therein.  The polyoxymethylene resin may be end-capped with alkyl ester or other groups and preferably has a flow number of 3 to 12.  Specifications 831,331, 831,332, 868,368, 884,771 and 946,059 are referred to.
Patent GB-1450432-A (GB)
Title: Apparatus for conveying sand moulds from a foundry moulding machine
IPC: B22C15/02
Filed: 1973-09-10
Abstract: 1450432 Foundry moulding SHERWIN WILLIAMS CO 10 Sept 1973 [10 Oct 1972] 9346/76 Divided out of 1450431 Heading B3G The Specification is identical with that of the parent Specification, but the claims relate to the means for conveying the sand moulds from the sand moulding machine to a casting position. As described such means include a bed 92 which supports a horizontal stack of moulds for movement therealong to the casting position, means to move a mould into position at one end of the bed in alignment with the stack, and pusher means not shown to place the mould aaginst one end of the stack and to move the stack. A mould traction device comprising drive belts 220, 221 frictionally engage the opposed sides of the stack and are driven in synchronism with the pusher means whereby interface pressure between adjacent moulds is relieved. The belts are driven via pinions 211, 212 mounted on overrumling cam clutches secured to vertical shafts 214, 215 in a framework which opens the bed 92; the belts are entrained about pulleys such as 218 secured to the shafts and idler pulleys 222, 223. The piston and cylinder assembly (110), not shown, which drives the pusher means is hydraulically connected with a piston and cylinder assembly 197 which drives racks 208, 209 engaging the belt pinions.
Patent GB-831922-A (GB)
Title: Sterile packaging of sterile consumable material
IPC: B65B55/06
Filed: 1958-03-24
Abstract: 831,922. Packaging-machines. ALPURA A.G. March 24, 1958 [March 26, 1957], No. 9424/58. Class 94(1). [Also in Group VI] Apparatus for packaging liquids and materials under sterile conditions in which a tube is formed, filled and sealed at intervals transversely to produce packages, is characterised by means to sterilise the formed tube above the level of the contents prior to sealing. A web 5 is tubed about a former 3 and sealed longitudinally by a shoe 7 and inner roller 9. Through it passes a filling pipe 21 supporting a sterilising heater 23 which may heat by radiant, hot fluid or induction means the inner surface of the tube. The outer surface is cooled by a liquid or air etc., spray, liquid being collected by means 34. A sterile gaseous medium may be fed into the tube to displace air above the contents during packaging, the medium passing through a conduit coaxial with the feed pipe, Fig. 2 (not shown). The tube is sealed by heated jaws 10, 11 on chains 12, 13, two sealing sets being provided to produce tetrahedral packages.
Patent GB-869975-A (GB)
Title: Bottom opening bin
IPC: B65D90/62
Filed: 1958-03-25
Abstract: 869,975. Skips. STOPPS, A. L. March 25, 1958, No. 9454/58. Class 78 (4). The bin illustrated can be stacked on top of a similar bin with its drop-bottom open or closed according to its orientation relatively to the lower bin. The drop-bottom has peripheral flanges 28, 28A of which the latter is formed with slots 39 to take over strip members 20 at the top of a similar bin to permit the drop-bottom to open, while the former is adapted to rest on the strips 20 to hold the bottom closed. The walls 12 of the bin, which slope inwardly and upwardly, terminate at their lower ends in channel members 16 adapted to take over flanges 14 on the walls of the bin below. The bin can be lifted by a shackle 34 connected to the dropbottom by a hollow tube 32 which permits air or other gas to vent from the bin below.
Patent GB-899179-A (GB)
Title: Improvements relating to automatic weighing scales
Inventor: BLAZEK ANTONIN
IPC: G01G7/04
Filed: 1959-03-19
Abstract: 899,179. Measuring electrically. MEOPTA PRAHA NARODNI PODNIK. March 19, 1959, No. 9508/59. Class 40 (1). In a weighing-machine, Fig. 3, in which deflection of a pivoted beam by a load to be weighed displaces from a null position the core 8 of a differential transformer 2, suspended from one arm of the beam, the output of the transformer being amplified, rectified, and fed back to a solenoid 5 associated with a core of permanently-magnetized, preferably hard ferrite, material suspended from the other arm of the beam in order to exert a restoring force on the beam, the overall gain of the feedback loop and, therefore, the sensitivity of the device are variable. In Fig. 7, the differential transformer 2 comprises two primary windings 9, 10, connected in aiding series, two secondary windings 12, 13 connected in series opposition, and an earthed screen 11 between the primary and secondary windings. The differential output of the transformer 2 is amplified by a triode 22 having in its anode circuit the primary winding of a transformer 23 whose two secondary windings 24, 25 are supplied with voltages of equal magnitude and opposite phase from secondary windings 26, 27 of a main transformer. The appearance of a voltage on the primary of transformer 23 varies in opposite senses the outputs from secondaries 24, 25 which are rectified by bridges 28, 29 and fed to two identical coils 5a, 5b, comprising the solenoid 5 to produce oppositely polarized fields the resultant of which exerts the restoring force on the beam, and to produce a resultant current representative of the weight of the load, which is measured on a meter 6. The gain of the feedback loop is varied by changing the voltage input to the differential transformer 2 by actuation of a switch 34, or by altering the value of a rheostat 32 in the solenoid circuit; alternatively, a variable gain amplifier may be used. In a modification, Fig. 6, the secondary voltages of the differential transformer are amplified separately by a double triode 21 before being rectified and fed to the coils 5a, 5b of the solenoid; again the input voltage to the differential transformer may be varied, in this case by a potentiometer 17, or a rheostat 18 in the solenoid circuit may be varied. In another modification, Fig. 5 (not shown), the secondary outputs of the differential transformer are not amplified but are separately rectified by rectifier bridges and fed to the coils 5a, 5b. Differential transformer. Fig. 4.-This comprises a frame 7 having two coil chambers in each of which is wound a primary winding 9 or 10, and a secondary winding 12 or 13, separated by the screen 11. The magnetic core 8 is suspended within the central axial bore of the frame 7.
Patent GB-843761-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: GINNS DENNIS WILLIAM
IPC: G21C5/06
Filed: 1947-04-10
Abstract: 843,761. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 8, 1948 [April 10, 1947], No. 9518/47. Class 39(4). A nuclear reactor moderator is formed of graphite bricks and has horizontal cooling channels, 1. Each channel is circular in crosssection, except at the bottom, where a key-way is cut in which rests a graphite rail 2 of T-section. The rail supports the fuel element 3 which is cooled by carbon dioxide gas flowing in channel 1.
Patent GB-1171986-A (GB)
Title: Improvements in or relating to Reversible Ploughs
IPC: A01B3/46
Filed: 1967-03-01
Abstract: 1,171,986. Reversible ploughs. MASSEYFERGUSON Inc. 1 March, 1967 [4 March, 1966], No'. 9597/67. Heading AlB. A reversible multi-furrow plough is provided with a hydraulic jack 76 which rotates a plough supporting frame 26 between left and right hand ploughing positions, the arrangement being such that the jack 76 is extended as shown on Fig. 3 to move the frame to one ploughing position and is retracted as shown in Fig. 4 to move the plough frame 26 to an intermediate transport position in which the frame is biassed by its weight to move to the other ploughing position when the jack 76 is again extended. The end of the jack is provided with a pin 82 which moves in a T-shaped slot 72 and engages in spring- urged catches 54 to lock the plough frame in the working positions. Movement of the pin 82 in slot part 72a releases the catch before the movement of the frame commences. A catch is provided for locking the plough frame in the transport position. The plough is provided with a rear wheel which is steerable by means disclosed in Specification 1,168,293.
Patent GB-253286-A (GB)
Title: Improvements in and relating to viscosimeters
IPC: G01N11/06
Filed: 1925-04-14
Abstract: 253,286. Rowett, F. E. April 14, 1925. Testing and measuring viscosity of liquids.- Comprises apparatus for determining the absolute viscosity of a liquid consisting in a horizontal capillary tube through which the liquid is passed, and two graduated vessels the lower ends of which are connected by the capillary tube. Two similar graduated vessels 1<A>, 1<B> having each a side branch 2 near the base are connected by a horizontal capillary tube 3 which may be interchanged with others suitable for determining a range of viscosity values bv removing plugs 4. The vessels are each fitted with a removable cap 5 having two connections 6, 11 to a V-tube pressure gauge 7 and through a stop cock 12 to the atmosphere respectively. The connections 6 also lead through stop cocks 9 to a vessel of large capacity 10 fitted with a V-tube pressure gauge 13 and with a connection 14 for pumping in air to a suitable pressure. The graduated vessels and capillary tube are immersed in a suitable bath 15 kept at a constant temperature and fitted with windows 16 for observation purposes. The motion of the meniscus of the liquid as it passes definite graduations in one vessel is observed by means of two low-power microscopes. In use, the viscosimeter is placed in the bath 15 and the latter brought to the required temperature. One vessel 1<A> is now placed in communication with the air reservoir 10 and the vessel 1<11> with the atmosphere, the liquid flowing through the capillary tube from the vessel 1<A> to the vessel 1<B>. When the level in the vessel 1<B> rises above the upper graduation, all cocks are closed. The liquid can now be returned from vessel 1<B> to the vessel 1<A> and as the meniscus crosses the top graduation in the vessel 1<B> a stop watch is started and on crossing the lower graduation the watch is stopped. The liquid can be passed from one vessel to the other until the time of passage is constant which will occur when the liquid has acquired the temperature of the bath. The difference of pressure at any instant can be expressed as a linear function of the volume of liquid which has passed from one vessel to the other since the stop watch is started. From this and the equation of motion given in the Specification the coefficient of viscosity can be calculated in terms of the dimensions of the tube and vessels and of the time between transits of the meniscus across the graduations. The same apparatus may be used to determine the viscosity at pressures other than atmospheric, the second connection on each cap being led to a second reservoir and one reservoir being kept just above the pressure required and the other just below.
Patent GB-693727-A (GB)
Title: Improvements relating to bladed rotary fluid-flow machines
Inventor: BARR JOHN CHARLES
IPC: F04D21/00
Filed: 1950-01-25
Abstract: 693,727. Centrifugal compressors and radialflow turbines. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. April 25, 1951 [Jan. 25, 1950], No. 9698/51. Divided out of 693,686. Classes 110(i) and 110(iii) A diffuser system for a certrifugal compressor or a nozzle system for a radial inward-flow turbine comprises inner and outer walls 4, 5 spaced to provide between them an annular flow passage, at least one of the walls having its inner surface defined by a hyperboloid of revolution of one sheet, and radially extending stator blades 6 of which the roots lie on the straight line generators of the hyperboloid. The hyperboloid shape may be locally modified adjacent the entry or exit. The rotor 1 may be as described in Specification 693,686.
Patent GB-309172-A (GB)
Title: Improvements relating to brake mechanism
IPC: F16D51/56
Filed: 1929-03-26
Abstract: 309,172. Bendix Brake Co., (Assignees of Sanford, R. S.). April 6, 1928, [Convention date]. Blocks acting on drums; compensating for wear.-Pivotally-mounted brake shoes are frictionally held so that on the application of considerable force they automatically adjust their positions radially of the drum in order to obtain full contact with the drum. A shoe 14 is mounted on a pivot comprising plano-convex members 30, Fig. 4, slidably embracing parallel plane surfaces on a pivot 32 which is smaller than the opening in the shoe, this arrangement allowing radial movement of the shoe and members 30. One of the two webs of the shoe 16 straddling the shoe 14 is mounted on a collar on the pivot 32 on one side of the members 30, and the other web is mounted on a bearing washer on the other side of the members 30, which are held in any position to which they are shifted by a clamping-nut and washers on the end of the pivot 32. A plate 44 secured to the shoe 16 by a screw 46 locks the pivot 32 against turning in shoe 16. The pivot 32 is held in the forked end of a stop 54 frictionally gripped against the brake backing- plate by a flange on an eccentric 50 which is clamped against the backing-plate in any desired position in order to adjust the position of the stop 54 so that the pivot 32 engages the bottom of the fork in release position. The webs of the shoe 16 straddle the shoe 18 and are mounted on a floating pivot 90 passing through a clearance aperture in the shoe 18 and mounted in links 78 pivoted on a fixed pivot 70 passing through clearance apertures in the webs of the shoe 16. The shoe 18 is pivoted on the pivot 70. The links 78 are clamped frictionally against a spacerbushing between them which carries the bearing for the shoe 18 by a nut and washers on the end of the pivot 70. Alternatively, the other ends of the links may be frictionally clamped. In a modification shoes 14, 16 are connected by a compression link 107 frictionally gripped to the shoe 14 by a pivot bolt 102. The webs of the shoe 16 are arranged outside the links 116 and carry radially-arranged thrust parts 130 engaged by radial thrust shoulders 128 carried by fittings 126 on the floating pivot 124. The parts 128, 130 are frictionally clamped to one another by a spring fastening 132. Specifications 280,720 and 285,307 are referred to.
Patent GB-234601-A (GB)
Title: An improved appliance for use in imparting instruction in or practising swimming
IPC: B63C9/08
Filed: 1924-04-17
Abstract: 234,601. Olsson, H. April 17, 1924. Addition to 216,673. Body attachments; swimming-appliances.-A swimming-appliance of the kind described in the parent Specification comprises a main float 1 adapted to afford a direct support to the chin of the pupil, and, attached thereto, two arms 2 connected to a belt 3 carrying one or more auxiliary floats 4. A coaming or breakwater 10 may be arranged on the chin support 5, which is adjustably attached by a bolt 6 and nut 7 to the float 1. The arms 2 are formed with slots 14<a> to facilitate adjustment relatively to the float 1 and are enlarged at 16<a> to engage the swimmer's sides. A staple 17 engages one of a series of rings on the belt 3.
Patent GB-785239-A (GB)
Title: A method of manufacturing casting moulds and press dies
IPC: B22F5/00
Filed: 1955-04-05
Abstract: In the production of casting moulds and pressure dies by powder metallurgy, the steel or other metal powder, with or without non-metallic additions such as chamotte, porcelain, coal or graphite, is placed in a pressure cylinder or other container and subjected to a preliminary compression, a pattern is pressed into the powder, and the body so obtained is sintered.  After the preliminary compression and before the pattern is pressed in the compressed powder may be partially or fully sintered.  Heat may be applied during the pressing-in at a temperature which is constant or increases to that of the sintering, whilst ultrasonic or other vibrations may be applied before or during the pressing-in.  The pattern may be surrounded by resilient means which holds the preliminarily compressed powder in position during the pressing-in.  Gas permeability of the mould or die may be reduced by impregnating with easily melted metals such as copper, zinc or aluminium.  The strength of the moulds or dies may be increased by means of spiral coils or other inserts placed in the powder, or the finished mold or die may be placed in a steel container and the intervening space filled by casting in metallic or ceramic materials.
Patent GB-301049-A (GB)
Title: Improvements in and relating to rotary cutting tools and process and apparatus for manufacturing such tools
IPC: B23P15/34
Filed: 1928-04-02
Abstract: 301,049. Tscherne, A. Nov. 25, 1927, [Convention date]. Milling-machines; milling-cutters reamers.- In a rota.ry cutting-too such as a reamer or milling-cutter, the cutting-edges are so arranged that spaced between a set of equally inclined cutting-edges c is located a second parallel set of cutting-edges c arranged on helices of the same hand, but of different inclination from the edges c. The cutter is formed on a milling-machine wherein the table T, movable transversely in relation to the milling-spindle Z. carries a casing 1 supporting in bearings a hollow shaft 2. The latter carries a toothed segment 3 engaging a vertically-sliding rack 4, which has a pin 6 engaging in a block working in a slotted arm 28 pivoted at 7 in a bearing fixed to the longitudinal slide S. The arm 28 is adjustably connected to a. second arm 41 supported on the pin 7, and oscillated by means of a crank pin 10 on a driven shaft 14. The hollow spindle carries a spindle 32 which is provided with a driving plate 16 coacting with an index pin 17 secured to the spindle 2. The blank A is secured by nuts 21 to a mandrel 20 carried between centres 22 and 23, and connected to the spindle 32 by a coupling- sleeve 19. Scales 44, 46, are provided for determining the angular adjustment of the arms 28 and 41. In operation, the end b of the blank is brought beneath the profiled milling-cutter H, and the blank is oscillated through the arms 41, 28, rack 4, and segment 3. As the slide T is moved to the right, Fig. 2, the pin 6 approaches the pivot of the arm 28, and the oscillation of the blank gradually decreases and a tapering groove is formed in a manner similar to that described in Specification 290,761. Owing, however, to the angularity of the arm 28 relatively to the arm 41, the movement of the pin 6 along its arm causes a gradual rotation to be imparted to the blank, so that the edges C, C<1> formed in the blank are helically arranged as shown in Fig. 1. The slot in the arm 28 may be suitably curved in order to vary the form of the cutting-edge. When one set of grooves has been milled out the blank is reversed end for end on its mandrel, and the oppositely-tapering grooves are formed in a similar way.
Patent GB-274933-A (GB)
Title: A portable electric lamp
IPC: F21V27/00
Filed: 1926-04-15
Abstract: 274,933. Ramsden, W. H. April 15, 1926. Couplings.-A portable electric lamp comprises a bobbin 20 and a lamp-holder 18 carried by a. sleeve 30 slidable in the bobbin and guided bv the ends of screws 21. The bobbin is provided with a fixed flange 1 and a rotatable base 4, normally connected together by a handle 6 which can be swung out of engagement with the base 4 when it is desired to rotate the bobbin. Feet 29 are provided to allow the apparatus to stand vertically. The lamp may be replaced by an adapter, similar to the adapter 17 on the free end of the electric conductor 8, so that the apparatus may be employed for connecting domestic irons, soldering irons, radiators, or cooking utensils to power points.