baber/WOPTO huggingface dataset:
Patent GB-982100-A (GB)
Title: Copolymers
Inventor: NIELD ERIC
IPC: C08F22/30
Filed: 1962-08-16
Abstract: Novel copolymers are made from a compound of formula <FORM:0982100/C3/1> where R is an alkyl radical and R1 is a monovalent hydrocarbon radical, and a vinyl compound containing no nitrogen atoms.  Copolymers exemplified are ethyl a -cyano-crotonate with propylene, vinyl ethyl ether, vinyl isobutyl ether, vinyl acetate and vinyl chloride. Polymerization is preferably by free radical in bulk, solution or suspension.  The Provisional Specification also describes copolymers of ethylidene malono-dinitrile with propylene, vinyl isobutyl ether and vinyl ethyl ether.
Patent GB-959280-A (GB)
Title: Hydraulic systems
IPC: F15B21/00
Filed: 1960-09-13
Abstract: 959,280. Valves. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN-UND-ARMATURENFABRIK KOMM.-GES.]. Sept. 13, 1960 [Nov. 11, 1959], No. 31504/60. Heading F2V. [Also in Division F1] An hydraulic system in which a pump 2 supplies a load 3 under control of a valve 5 has a safety valve 6 for protecting the pump against damage when running at low speeds, the safety valve having an internal annular groove 32 connected by a line 16 to a reservoir and controlled by a piston 25 with an axial bore 26 so that flow from the pump tends to close the groove 32 against the action of a spring 33. The pump 2 charges an accumulator 3 through the valves 6, 5 and a non-return valve 20 until the pressure in the accumulator is sufficient to displace a piston 22 and a closure member 21 of the valve 5 to the right to open a return line 9, 17 to the sump 4. The valve 6 has a piston 25 which is held in the position shown against the action of the spring 33 by the pressure differential due to the flow through the bore 26. When the valves 20 and 5 are closed and the pump speed falls, the pressures in the pipes 14 and 15 are equalized and the spring 33 lifts the piston 25 to uncover the return line 16 so that overheating of the pump is prevented. A groove 28 communicating with the restricted bore 26 and connected by a by-pass 31 with the line 16 has a shoulder 27 to engage a shoulder 30 in the valve housing when the piston is in the raised position. A valve 1 supplied by the accumulator forms part of a power steering system.
Patent GB-423623-A (GB)
Title: An improved cover for teapots and other vessels having loose lids
IPC: A47J36/06
Filed: 1933-11-13
Abstract: 423,623. Teapot &c. covers. DESSAR, J., 5, Museum Street, London. Nov. 13, 1933, No. 31615. [Class 66] A cover for sealing in liquid-tight manner a teapot &c. having a non-liquid-tight lid and a pouring spout comprises a cap formed with a skirt 9 and adapted to be stretched over the upper end of the vessel, the skirt carrying a plug 10 adapted to enter and seal the spout 5. The skirt is made of elastic material such as indiarubber, but the upper part 8 need not be elastic and may consist of hard rubber. The portion 8 may have an annular flange 11 adapted to engage the knob of the lid 3, and where the upper part of the vessel is formed with a groove the lower part of the skirt may have inward projections adapted to engage in it. The invention is shown applied to a teapot of the kind having the spout and handle confined within the boundaries of the walls.
Patent GB-247127-A (GB)
Title: Improvements in the mechanism of speed governor devices
IPC: F03B15/12
Filed: 1924-09-30
Abstract: 247,127. English Electric Go., Ltd., (Seewer, P. W.). Sept. 30, 1924. Fluid governors; fluid relays.-In governor gear comprising a member which, due to change of speed, actuates the needle of a pilot valve, which is just clear of its seating in the equilibrium position, the speed of the governor is adjusted by making the seating of the needle valve adjustable by means of a screw-threaded mounting and a part which works therein and supports the seating in conjunction with means for producing relative rotation between the seating and the mounting. The needle-valve 6 controlled by a centrifugal governor controls leakage from a cylinder 84 in which is a piston 83 carrying the seat 57 of the needle-valve and having a spindle 82 working in a screw-threaded sleeve 85 mounted on the distributing valve 61 of a servo-motor actuating the engine throttle valve. The spindle 82 is grooved to form a piston-valve controlling the inlet of fluid from the channel 58 to the chambers 91, 92 and the exhaust of fluid through the passages 53, 106. To set the governor speed the sleeve 85 is rotated by gearing 132, admitting fluid to one of the chambers 91. 92 to actuate the valve 61. The consequent change of speed causes the governor to move the pilot valve to a new position, and this is followed by a piston 83. The Provisional Specification describes an arrangement in which the intermediate relay is omitted, the valve seat 57 being mounted on the screw-threaded member 85.
Patent GB-1126434-A (GB)
Title: Electro-slag remelting processes
Inventor: GILBERT ROY ALFRED
IPC: C22B9/18
Filed: 1966-07-14
Abstract: 1,126,434. Casting processes. HENRY WIGGIN & CO. Ltd. 30 June, 1967 [14 July, 1966], No. 31637/66. Heading B3F. An electroslag refining process is initiated with a solid calcium fluoride slag and, when this is molten and the melting process is selfsustaining, an addition of aluminium oxide, calcium oxide or both is made to the slag. Other materials may be added such as magnesium fluoride, sodium fluoride, -magnesium oxide and, if the electrode contains titanium, titanium dioxide. A starter pad of the same alloy as the electrode and bearing magnesium turnings may be placed at the bottom of the mould before putting slag in the mould.
Patent GB-426065-A (GB)
Title: Improvements in or relating to variable speed gears for bicycles and the like machines
IPC: B62M9/16
Filed: 1933-11-14
Abstract: 426,065. Change-speed chain gearing. SWAINSON, T. H., 97, High View, Wallsend, Northumberland. Nov. 14, 1933, No. 31653. [Class 80 (ii)] [See also Group XXXI] Change-speed chain gearing for bicycles comprises multiple sprockets X, V, Fig. 3, on the driving road wheel axle A between which a chain U is shifted by the mounted rider. The axle A is supported in a pair of hanging arms b pivoted at c to the cycle frame. The larger sprocket V is shown operative and the tension in the driving chain U is supported by thrust in a pawl n pivoted at f to the arm b on the chain side of the cycle and butting against a fixed set screw g. To change to high speed, the pawl n is first withdrawn by pull in a cable h from a hand lever o. The axle A then floats about the pivots c against the action of a spring e, the chain U being loose. The chain is then shifted to the smaller sprocket X by a shifter t, Fig. 4, actuated by a pull in a cable w against a return spring, not shown, exerted by moving a hand lever p, Fig. 3, from position r to position s. The lever o is now released and the pawl n drops so as to butt against a set screw stepped from the screw g so that the chain U is maintained in proper tension when pedalling is resumed.
Patent GB-1166448-A (GB)
Title: Toggle Action Jaw-Type Gripper
Inventor: BLATT LEYLAND FRANCIS
IPC: B23Q3/08
Filed: 1968-01-23
Abstract: 1,166,448. Grippers for lifting articles. L. F. BLATT. 23 Jan., 1968 [16 March, 1967], No. 31675/66. Headings B8H and B8R. The jaws 10, 12 of a gripper, which are pivoted on a common fixed axis 14, are closed when a clevis 28 and piston rod 26 are moved to the right by a piston in a cylinder 24. Links 30, 36 are prevented from moving over centre by projections 44 on the upper jaw arms 16 which abut the links 36. Adjustable convex conical jaw inserts (40), Fig. 2 (not shown), and concave inserts (42) are mounted on jaw plates 18, 22 respectively.
Patent GB-1049006-A (GB)
Title: Displacement catalyst for preparation of alpha-olefins
Inventor: ZIEGENHAIN WILLIAM CHARLES
IPC: C07C2/88
Filed: 1965-07-26
Abstract: Alpha-olefines are obtained from an aluminium alkyl growth product by displacement with a lower olefine using as catalyst the reaction product of (a) a reduction metal or compound thereof, (b) an aluminium alkyl, preferably growth product and (c) an isomerization inhibitor, preferably an acetylenic alcohol or hydrocarbon, for a period of at least two hours at not more than 125 DEG F.  The catalyst may be formed from nickel, nickel acetylacetonate, nickel naphthenate, cobalt, palladium and iron compounds; precipitate is filtered off before the catalyst is used.  The amount of nickel catalyst may be 0.001-0.1% wt. of the growth product.  Displacement is effected with ethylene at 75-575 p.s.i.g., and 60-125 DEG  F. for 2-30 hours
Patent GB-952362-A (GB)
Title: Sand-lime mortars
Inventor: MCCARTHY JOHN EDWIN O'BRIEN
IPC: C04B28/20
Filed: 1960-09-14
Abstract: To a mixture of ground lime and sand in varying ratios (e.g. 1 : 3) is added sufficient water to hydrate the lime and the mixture is slaked in a rotary vessel in an atmosphere of steam (pressure 30-75 lb. p.s.i.) for 30-60 mins.  The mix is then ground in a rod mill and the moisture content brought to between 3% and 8% by weight, by passing warm air through the mill and then matured in storage hopper.
Patent GB-280389-A (GB)
Title: An improved method of and apparatus for the separation of solids from liquids in which said solids are suspended
IPC: B01D33/00
Filed: 1926-12-14
Abstract: 280,389. White, A. E., (Wright, A., and Young, F. W.). Dec. 14, 1926. Rotary filters. - A cake of solid matter separated from suspension in liquid is formed around reinforcing means, such as mesh or parallel strands of wire or rope, by which it is conveyed away to drying apparatus or for disposal. In the apparatus shown the cake is formed by means of a rotary filter 1, Fig. 2, dipping into a trough 19 to which the material under treatment is supplied. The cake separated by the filter is built up around the parallel strands of a reinforcing device 11 which encircle the filter and carry the cake around a heated drying drum 12. The strands also pass around a roller 14, as shown in Fig. 3, so that the cake is detached and delivered to a hopper 15. A comblike device for detaching the cake may be substituted for the roller 14. The filter 1 is driven uniformly, and the speed of the drum 12 is controlled by a rheostat connected to pivoted arms 17 carrying an idler roll 16 which rests in the slack of the strands 11. The cake on the filter is subjected to pressure by a band 4 passing round rolls 5 - - 8. In the apparatus shown in Fig. 8 the reinforcing medium passes from a filter drum a around steam-heated rolls f - - i supported on a frame which also supports a compressor belt k. The roll i is formed with circumferential grooves i<1>, Fig. 9. into which the strands enter so that the cake is detached.
Patent GB-505046-A (GB)
Title: Improvements in or relating to draw-off cocks or valves
IPC: F16L41/06
Filed: 1937-11-18
Abstract: 505,046. Valve accessories; portable drilling - machines. DYER, A. E., and PARSONS, W. G. Nov. 18, 1937, No. 31742. [Class 135] [Also in Group XXII] A screw-down valve of the pillar type has the valve spindle b below the valve washer g constituted as a diall k and is provided with means for attaching it to a pipe m leading from the lower part of a cistern so that a hole r may be drilled through the wall of the pipe and all the water discharged from the cistern. The spindle has an enlarged threaded part d above which a handle is applied at f. The valve casing is formed integrally with one of the clamping members n and has an outlet branch c to which a hose may be attached. The clamping members n, o are connected by screws p, a gasket q being interposed between the member n and the pipe m. The washer g co-operates with the valve seat h after the hole is drilled.
Patent GB-275471-A (GB)
Title: Improvements in or relating to electrical transformers
IPC: H01F27/26
Filed: 1926-12-17
Abstract: 275,471. British Electric Transformer Co., Ltd., and Roothaan, J. Dec. 17, 1926. Transformers.-Laminated cores for transformers are built up of rectangular strips 1 - - 4 of magnetic material all of the same length and width, and so arranged that in alternate layers the strips 2, 4 forming the yokes project at opposite sides beyond the strips 1, 3 forming the legs so as to provide supports for the windings. The windings may be in the form of coils 11, 12 extending over the whole of the legs, or they may be arranged in staggered relation extending over only half the legs. The latter arrangement is shown in Fig. 10 which shows a three-phase transformer in which the core strips 5 - - 10 are similarly arranged, wooden or other packing strips 13, 14 being used to fill the spaces between the windings and the core extensions. Figs. 12 and 14 show respectively side and end views of a three-phase transformer in which the windings are arranged in two coils F, G connected in open delta and provided with end connections and tappings 26 - - 30. The core strips are clamped between angle members 18, 19, 18<a>, 19<a>, and the two sets of angle members are clamped between transverse plates 24, strips 23 of insulating material being placed between the angle members and the yokes. The clamping bolts 20, 20<a> are extended to form supports for the transformer.
Patent GB-260442-A (GB)
Title: Needle threading device
IPC: D05B87/00
Filed: 1925-12-18
Abstract: 260,442. Leeming, J. T. Dec. 18, 1925. Needle - threaders. - The threading hook c is supported in a sheath a carried by a handle b. The retracting movement of the hook which draws the thread through a needle-eye is effected by a bifurcated spring lever d pivoted to the sheath and connected to the hook by a wire link g, part of which is bent as shown at j to engage the outer part of the sheath and act as a guide.
Patent GB-758373-A (GB)
Title: Improvements in pipe connections
Inventor: GOODMAN HUGH FREDERICK
IPC: F16L19/03
Filed: 1953-11-20
Abstract: 758,373. Joint-making packing. A.P.V. CO. Ltd. Aug. 24, 1954 [Nov. 20, 1953], No. 32302/53. Class 122(3) [Also in Group XXVIII] A fluid-tight pipe connection comprises a resilient sealing ring 5 compressed between the ends of the pipes 1, 2 and carried by an outer rigid confining ring 7 which is formed to locate the pipes 1, 2, coaxially of one another and is provided with abutting surfaces 12. 13, engaging the pipe ends or end fittings 3, 4, thereon to prevent the pipes exerting too great a compression on the ring 5. The ring 5, which is of dovetail section as described in Specification 576,233, may be bonded to the ring 7 or, as shown in Fig. 4, carries in a recess 17 thereof and the ring 7 is formed as a T-shaped member having flanges 8, 9, which engage locating surfaces 10, 11 on the pipe ends or on the flanges 3, 4, on the ends of the pipes. The T-shaped member 7 may be formed from two separate rings.
Patent GB-811758-A (GB)
Title: Polybenzoxazoles and method of preparing the same
IPC: C08G73/22
Filed: 1956-10-23
Abstract: Polybenzoxazoles are made by heating an amino-hydroxy-phenylalkanoic acid of the general formula <FORM:0811758/IV (a)/1> where R is a divalent hydrocarbon radical, or by heating a compound of the general formula <FORM:0811758/IV (a)/2> where R1 is a divalent hydrocarbon radical or a carbon-to-carbon bond with a substantially equimolecular quantity of a saturated aliphatic dicarboxylic acid or an ester thereof, at a temperature of from 100 DEG  to 350 DEG  C. in the absence of oxygen. The monomers may be co-condensed with polyamide-forming monomers, e.g. tetramethylene and hexamethylene diamine, if equimolecular quantities of dicarboxylic acids are present.  In the examples, polybenzoxazoles are prepared from (i) 3-amino-4-hydroxyhydrocinnamic acid; (ii) 3-(3-amino-4-hydroxy phenyl)-3 methyl butyric acid; (iii) 5 - (3 - amino - 4 - hydroxyphenyl) - 5 - methyl hexonoic acid; (iv) 3,31-dihydroxybenzidine and sebacic acid; (v) 3,31-dihydroxybenzidine and sebacic, azelaic and suberic acid.  Specifications 461,236, 461,237, [both in Group IV], and U.S.A.  Specification 2,497,248 are referred to.ALSO:Amino-hydroxy phenyl alkanoic acids of the general formula <FORM:0811758/IV (b)/1> where R is a divalent hydrocarbon radicle, and compounds of the general formula <FORM:0811758/IV (b)/2> where R1 is a divalent hydrocarbon radicle or a carbon-to-carbon bond are prepared and used as intermediates in the preparation of polybenzoxazoles (see Group IV (a)).  In the examples: (1) 4-hydroxybenzaldehyde is heated with malonic acid in the presence of pyridine to prepare 4-hydroxy cinnamic acid which is reduced to 4-hydroxy hydrocinnamic acid, nitrated with aqueous nitric acid to form 3-nitro-4-hydroxyhydrocinnamic acid which is reduced with hydrogen to yield 3-amino-hydroxyhydrocinnamic acid; (II) methoxybenzene is reacted with methallyl chloride in the presence of sulphuric acid to yield 4-chloro-tertiarybutyl methoxybenzene which is converted by a Grignard reaction to 3-(4-methoxyphenyl)-3-methylbutyric acid from which 3-(4-hydroxyphenyl)-3-methyl butyric acid is derived by reflux with an hydrobromic acid-acetic acid mixture, the resultant acid being nitrated and hydrogenated to yield 3-(3-amino-4-hydroxyphenyl)-3-methylbutyric acid; (III) methoxybenzene is alkylated with 5-methyl-5-hexenenitrile in the presence of hydrogen fluoride to yield 5- (4-methoxyphenyl) - 5 - methyl hexenenitrile which is refluxed with sulphuric acid and reacted with an hydrobromic acid-acetic acid mixture to yield 5-(4-hydroxyphenyl)-5-methylhexanoic acid which is nitrated and reduced with hydrogen to give 5 - (3 - amino - 4 - hydroxyphenyl - 5 - methylhexanoic acid; and (IV) 3,31-dihydroxybenzidine is made by demethylating o-dianisidine with aluminium chloride. Specifications 461,236, 461,237, [both in Group IV], and U.S.A. Specification 2,497,248 are referred to.
Patent GB-837294-A (GB)
Title: Electron tube apparatus
Inventor: GARDNER BERNARD CLIFFORD
IPC: H01J25/24
Filed: 1956-08-03
Abstract: 837,294. Velocity-modulated tubes. VARIAN ASSOCIATES. Aug. 3, 1956, No. 32328/58. Divided out of 837,292. Drawings to Specification. Class 39(1). The subject-matter of this Specification is included in Specification 837,292 but the claims are directed towards the iris opening in the wall of the internal cavity resonator. Specifications 810,327 and 837,293 also are referred to.
Patent GB-263498-A (GB)
Title: Variable condensers
IPC: H01G5/06
Filed: 1926-12-21
Abstract: 263,498. Mittelmann, E. Dec. 21, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Condensers have plates of a shape or contour which is calculated with the aid of an equation obtained from a parabolic, hyperbolic, or like relation between wavelength and dial reading, so providing for unequal changes of wave-length for equal changes of dial reading, and for smaller changes of wave-length at initial, than at higher, values of dial reading. The Specification gives curves in illustration of this, as well as exemplary equations and shapes of plates derived therefrom.
Patent GB-1374213-A (GB)
Title: Powder blending apparatus
IPC: B01F29/63
Filed: 1972-11-20
Abstract: 1374213 Blending apparatus N T J WILKINSON and S M WILKINSON 20 Nov 1972 [11 July 1972] 32353/72 Heading B1C A powder blending apparatus comprising a container 1 rotatable about an axis and having mounted therein at least one blending unit 7, each unit being constituted by a funnel 4 and a cowl 9 which are axially spaced from each other along the longitudinal axis of the container and from each end plate 3, the funnel having an entry opening facing the end plate 3 and an exit opening facing the cowl 9 the cowl being dome shaped and the convex portion of the cowl facing the exit opening of the funnel. The funnel is screwed to the end plate by stays 5 and the cowl is diameter of the exit opening of the funnel. In operation the container is charged with attached to the funnel by similar stays 8, the diameter of the cowl being larger than the powder and is rotated about an axis transverse to the longitudinal axis of the container and the powder held in the container is directed through the funnel and discharged over the convex surface of the cowl towards the sides of the container whereby mixing of the powder is effected.
Patent GB-1078275-A (GB)
Title: Improvements in fasteners
IPC: A44B17/00
Filed: 1964-08-07
Abstract: 1,078,275. Pull & pull fasteners. H. KOEHL. Aug. 7, 1964 [Oct. 15. 1963]. No. 32354/64. Heading B2B. A snap fastener comprises a stud member and a socket member, each comprising a base 1 having a peripheral wall and a centrally disposed and axially extending tubular portion 3, said peripheral wall terminating into a plurality of prongs 4 with pointed ends 5 which extend through material 18 and are bent over to secure the fastener to the material, and means associated with said prongs for securing the snap fastener to the material. In the embodiment shown in Figs. 1 and 4 of the socket member of a snap fastener, the socket 3 has a wire-spring member 2<SP>1</SP> the ends 2 of which are mounted in slots 3<SP>1</SP>, to resiliently retain the stud member in the socket 3. Between the prongs 4 are inwardly bent tongues 7 which retain the portion 8 of the wire-spring member within the base. When the prongs 4 are bent hook-like after passing through the material, the points 5 engage the free edges 9 of the tongues to form a closed loop 10. A wire ring 11 (Fig. 5. not shown) may be inserted in the loop 10 to clamp the material 18 against the tongues 7. In another embodiment Fig. 8 the attachment means comprises a hollow ring 12 with an annular slot into which the pointed ends 5<SP>1</SP> of the prongs are inserted by slight pressing together of the ring 12 and socket member. In another embodiment, the attachment ring has holes and small indentations, the prongs 5 passing through the holes to be bent into the small indentations. The stud member of the snap fastener can be secured to material in the same manner.
Patent GB-668755-A (GB)
Title: Improvements in process and apparatus for the manufacture of mixtures of magnesia and calcium carbonate
IPC: C01F11/18
Filed: 1949-12-16
Abstract: A mixture of magnesia and calcium carbonate, for use in the industrial purification of water, is prepared by heating raw or calcined and subsequently hydrated dolomite to 500 DEG -800 DEG C. (preferably 700 DEG -800 DEG C.) in the presence of carbon dioxide, and cooling the product also in the presence of carbon dioxide. Hydrated calcined dolomite may be granulated before treatment. The carbon dioxide used may result from the heating of raw dolomite, from combustion gases, or from the roasting of other ores.  The process is carried out continuously in a rotary furnace having heating and cooling zones (see Group XII).  The dolomite may be preheated by combustion gas from the furnace. Any free lime present in the product lies in the core of the pieces and not on the surface.ALSO:A mixture of magnesia and calcium carbonate, for use in the industrial purification of water, is prepared by heating raw or calcined and subsequently hydrated dolomite to 500 DEG -800 DEG C (preferably 700 DEG -800 DEG C) in the presence of carbon dioxide, and cooling the product also in the presence of carbon dioxide. Hydrated calcined dolomite may be granulated before treatment. The carbon dioxide used may result from the heating of raw dolomite, from combustion gases, or from the roasting of other ores.  The process is carried out continuously in a rotary furnace having heating and cooling zones (see Group XII).  The dolomite may be preheated by combustion gas from the furnace.  Any free lime present in the product lies in the core of the pieces and not on the surface.