baber/WOPTO huggingface dataset:
Patent GB-724139-A (GB)
Title: Improvements in or relating to styrene butadiene latices
IPC: C08F2/22
Filed: 1952-07-01
Abstract: A freeze stable latex comprises an aqueous emulsion copolymer of 61-73 per cent of a styrene and 39-27 per cent conjugated diolefin polymerized in the presence of 1 to 2 parts of a soluble salt of persulphuric acid and 0.02 to 2.5 parts initial charge of an anionic emulsifying agent, additional stabilizing emulsifying agents having been added to the latex after 50 per cent conversion.  Butadiene and isoprene are specified diolefines and styrene, alphamethyl styrene, the nuclearly substituted styrenes, chlorostyrenes and vinyl toluene are specified styrenes.  Specified persulphates are those of sodium, lithium, ammonium and (preferred) potassium, while anionic emulsifying agents are the alkyl and alkaryl sulphonates, alkyl sulphates and salts of naphthenic acids, soaps and sodium and potassium dresinate.  The stabilizing emulsifying agent need not be anionic, and among those specified are a soap modified glyceryl monoricinoleate, ammonium oleate, morpholine dresinate, a condensate of ethylene oxide and an alkylphenol, ammonium dresinate and the ammonium salt of linseed oil fatty acids.  The pH of the polymerization reaction is preferably maintained between 7 and 12, preferably 8 to 10, by use of a buffer such as sodium perborate, sodium phosphates and other sodium-boron compounds as well as carbonates and bicarbonates.  A pigment such as titanium dioxide, clay, silica, lithopone, mica, barium sulphate, talc, zinc sulphide, carbon black, iron oxides, cadmium yellows, phthalocyanines, ultramarine, chromium oxides, umber and sienna may be added to yield a paint, which may also contain a hydrophilic colloid, e.g. protein, as the pigment dispersing agent.
Patent GB-145447-A (GB)
Title: Improvements in apparatus for measuring the depth or quantity of liquid in a container and for determining the specific gravity of a liquid
IPC: G01N9/26
Filed: 1920-06-18
Abstract: 145,447. Stancliffe, C. W. July 15, 1915, [Convention date]. Indicators actuated by pressure of head of liquid.-In a liquid-level indicator of the kind in which the level or head of a liquid in a tank 21 is indicated by a manometer 1 measuring the pressure necessary to force air through a pipe 22 dipping into the liquid, the manometer is so mounted that it may be set at different inclinations to the vertical in accordance with the specific gravities of different liquids in the tank. Conversely, the level of a liquid in the tank being, known, its specific gravity is determined by so inclining the manometer that it indicates. the known level. The chamber 3 containing the indicating liquid of the manometer is mounted upon a frame by means of a boss 4 forming a pivot, and may be rotated in a vertical plane by moving an arm secured to the bottom of the chamber over a scale 10 on the frame. The chamber is connected to the pipe 22 by a flexible pipe 23. An air pump 25 is mounted on the top of the chamber. The manometer tube 16 and scale 14 may be inclined, say, when water levels are being. measured, at 60 degrees to the vertical, thus increasing the sensitiveness of the apparatus. In a. modification, a light liquid supported by a quantity of mercury is used as the indicating liquid. The air pump may be a rubber or like bulb.
Patent GB-582424-A (GB)
Title: Ultra-high-frequency tuning unit
IPC: H01F21/00
Filed: 1943-10-11
Abstract: 582,424. Wireless apparatus. HAZELTINE CORPORATION. Oct. 11, 1943, No. 16655. Convention date, Oct. 3, 1942. [Class 40 (v)] [Also in Group XXXV] A variable inductance for tuning ultrahigh-frequency oscillatory circuits comprises a single turn loop of conductive material 10, associated with a movable conductive member 13, the average minimum spacing between the two conductors being not more than half the radial thickness of the member 10. The latter is formed integrally (e.g. as a die casting in aluminium) with webs 11 and a base 12, provided with a bearing for a spindle 16 rivetted to a disc 14 formed integrally (e.g. as a die casting in aluminium) with the member 13. The upper portion of each web 11 may form one plate of a condenser, the other plate 21 being secured in position by insulated screws 23. The inductance may be coupled to the anode and grid of a valve through the condensers thus formed. Alternatively, the condensers may be built on the end surfaces of the loop member 10. The movable member 13 may be axially displaceable instead of rotatable or it may surround the member 10 and both members 10 and 13 may be elliptical or square instead of circular.
Patent GB-129384-A (GB)
Title: Improvements in or relating to Ordnance.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41G3/02
Filed: 1917-11-13
Abstract: 129,384. Dawson, Sir A. T., and Buckham, Sir G. T. Nov. 13. 1917. Sights.-Relates to anti-aircraft guns having an independent line of sight and provided with vertical deflexion gear for correcting the tangent angle of elevation for an advancing or receding target. According to the invention, the vertical deflexion gear is mounted on the carriage and operates, to effect relative displacement of the gun and sight, through differential gear, which is also operated by the pointing-gear by which the gun and sight are elevated together in keeping the sight on the target. In the construction shown in Figs. 1 and 2, the sight bracket B<2> is provided with an elevating-arc B<3> which is engaged by a worm. f<1> on a rotary shaft F' leading from the differential gear F. The differential gear is driven by a worm e on a shaft E<1> operated by the deflexion hand-wheel E, Fig. 2, and also by a bevel. wheel c on a shaft C<1> operated by the pointing crank-handle C. The pointing-gear also elevates the gun by operating on the pointing-arc Cx, so that if the deflexion hand-wheel is not moved, the gun and sight move through equal angles. In a modification, Fig. 3, the differential gear F operates upon the pointing-arc C<x>, and the pointing- gear operates the sight bracket directly.
Patent GB-250891-A (GB)
Title: Improvements in circuit-breakers
IPC: H01H13/28
Filed: 1925-06-29
Abstract: 250,891. Fischer, G. S. April 18, 1925, [Convention date]. Press - button switches; switches, quick - action. - A switch adapted to be incorporated in a stand for an iron comprises a press-button b which is depressed by the weight of the iron, a spring c situated between a pin e on the button and one arm of a contact lever g, and a spring d situated between a pin f on the button and the base i. As the button is pressed down the spring c is compressed and the lever g held from movement by a spring h till it slips over the spring h and moves into the open position with a snap action. When the iron is lifted off the stand the spring d returns the parts to their original position.
Patent GB-845099-A (GB)
Title: Improvements in and relating to thermoplastic resins
IPC: C09D5/25
Filed: 1959-05-19
Abstract: A thermoplastic polyethylene composition comprises a polyethylene resin having a deformation capacity of less than 10% at 115 DEG C., 5 to 70 parts of the resin of a hydrocarbon rubber, and 17 to 100 parts of rubber and resin of a flame-resistant compound. Specified hydrocarbon rubbers are polybutadiene, polyisobutylene butyl rubber, butadiene styrene and butadiene isoprene.  Specified flame resistant compounds are a mixture of a metal oxide with a chlorinated wax and a mixture of antimony oxide with a chlorinated paraffin wax.
Patent GB-185256-A (GB)
Title: Improvements in latch releasing devices
IPC: E05B37/02
Filed: 1921-06-21
Abstract: 185,256. Root, W. June 21, 1921. Locks, permutation; latches, lift and thumb.- A latch securing a door or lid can only be released when perforations in a plane at right-angles to the axis of concentrically-mounted cylinders, and along cords of the circles of intersection of the cylinders with said plane, are alined to permit the passage of a pin which thrusts out a bevelnosed rod to lift up the latch. The concentric cylinders 2, 3, 4 are rotatable one within the other by means of the arm 14 mounted on the cylinder 2, and pins 15, 16 on the other cylinders engaged by the arm. The cylinders are rotated to bring a mark on each opposite one of a series of marks on the casing, whereupon perforations 6 in them form a clear passage through the whole. Perforations 7 in the lock casing permit a pin 18 to be passed through the passage 6 to push out a bevel-nosed rod 8, normally held within the casing by a spring 10. The bevel lifts the latch clear of the staple-hook 12, allowing the door or lid to be opened. In the modification shown in Fig. 6, the pin 18 is moved by means of a rack 20 formed at its end and operated by a pinion 21. The bottom plate 23 supporting the cylinders has also teeth 24 engaging a pawl 25 pressed to its work by a spring 26. This enables the cylinders to be set by sound. In both modifications a number of false perforations 5 are cut radially into the cylinders to prevent setting by trial.
Patent GB-647315-A (GB)
Title: Improvements in mine props
IPC: E21D23/00
Filed: 1948-06-24
Abstract: 647,315. Mine props. MAVOR & COULSON, Ltd., and TOWLER, J. M. June 24, 1948, No. 16977. [Class 20(ii)] A prop assembly consists of a pair of outer side component props and a middle prop between the side props, having heads 4, 5, 6 to engage the mine roof, the middle prop being movable in relation to the other props so that in one setting the middle prop supports a roof surface between surfaces supported by the outer props and in another setting the middle prop supports another such surface. Each prop comprises a vertical hydraulic cylinder-and-ram unit 13, 14. The heads 4 and 5 are interconnected by cross-bars 12. The outer props have slidable bases 7, 8 interconnected by cross-bars 10, 11 and the middle prop has a slidable base 9. The bases 7, 8 are connected to the base 9 by a horizontal hydraulic cylinder-and-ram propulsion unit, the cylinder 15 of which is carried by trunnions 16 on brackets 17 provided on the cross-bar 11 and the ram 18 of which has a head 19 that is pivotally connected to brackets 20 on the middle prop cylinder 13. The assembly is moved along by retracting the middle prop, moving it by the unit 15, 18 and extending it to support the roof again, then retracting the outer props, moving them along by the unit 15, 18 and extending them to support the roof in the new position. The heads 4 and 5 are of long rectangular form whereas the head 6 is comparatively short, and thus as the assembly advances intermittently each supported roof area is an unbroken extension of another supported area.
Patent GB-515126-A (GB)
Title: Improvements in supporting members for thermionic filament cathodes
IPC: H01J1/18
Filed: 1938-06-08
Abstract: 515,126. Thermionic valves. WALKER, C. H., LUDLOW, J. H., DODDS, J. M., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 8, 1938, No. 17054. [Class 39 (i)] A thermionic filament supporting arrangement for a discharge tube comprises filament support posts 3; 4 of opposite polarity respectively carried by two coaxial cylindrical members 1, 2 rigidly secured end to end with interposed insulation 7 so as to form a base structure from which the filament extends in an axial direction, the terminal posts such as 4 secured to that cylindrical member 2 which is furthest from the filament passing through holes in the nearer cylindrical member 1 with clearance sufficient to provide insulation therefrom ; mechanical connections 12, 14 between the cylindrical members 1, 2 and respective terminal members 10, 11 locate the filament, connect it electrically to the terminals 10, 11 and provide for heat conduction from the base members. In the form shown, the damping members 12, 14 have their curved edges 13, 15 accurately machined to engage the members 10, 11. These clamping members may be formed integral with the base members 1, 2 brazed or welded to them, or, according to the Provisional Specification, brazed, welded or screwed to the terminals or to the base members. The push rod 18 supports the filament hooks 16 and the filament is tensioned by a spring 20 in a box 19 sleeved on to the end 5 of the member 1 below the nut 6. For a three-phase supply, the projection 5 will pass through two base members and the terminal members will be symmetrically disposed. Specifications 414,753, 424,593 and 484,399 are referred to. The Provisional Specification describes molybdenum terminal posts and copper base members, and also the application of the invention to the screen grid valve described in Specification 414,753, with reference to Figs. 1 and 2 of that Specification. Specification 515,125 also is referred to.
Patent GB-1363123-A (GB)
Title: Bobbins for electrical windings
IPC: B65H75/28
Filed: 1972-08-25
Abstract: 1363123 Coil formers; terminal connection SURREY STEEL COMPONENTS Ltd and J S CONN 25 Aug 1972 [25 May 1971] 17060/71 Heading B8M [Also in Divisions H1 and H2] A bobbin for an electrical winding is associated with a member 18 of electrically non-conducting material carrying at least two spaced apart electrical terminals 19, and at least one pair of arms 21 arranged to snap around a portion of one of the end flanges 11 of the bobbin. The bobbin is preferably made of thermoplastic material and the member 18 of thermosetting material. In a preferred embodiment, the member 18 is C-shaped and formed with two pairs of arms 21 which snap-fit around studs 17 provided on the flange. The electrical terminals are in the form of tags which engage in slots provided in the member 18. In the preferred embodiment, the flange 11 is also provided with upstanding ribs 13, 14 adjacent the bore of the bobbin, the faces 15 of the ribs being inclined towards the bore to facilitate insertion of the laminations of a transformer. A flash guard may also be provided to span the area between the flanges and to engage in recesses provided in the edges of the flanges. The member 18 may be provided on one flange 11 only the other flange 11a being such that it may abut the same flange on a similar bobbin for back-to-back location on a transformer, one bobbin carrying the primary winding, and the other bobbin the  secondary winding. Alternatively, a member 18 may be provided on each flange, one or more intermediate flanges being provided along the length of the bobbin to divide the length into sections for the reception of a plurality of windings.
Patent GB-1288015-A (GB)
IPC: F01D21/02
Filed: 1971-05-26
Abstract: 1288015 Fluid-pressure servosystems TOKYO SHIBAURA ELECTRIC CO Ltd 26 May 1971 [4 June 1970] 17133/71 Heading G3P [Also in Division F1] A turbine plant comprising a boiler 1 supplying steam through a control valve 2 to a high pressure turbine stage 3 and thence through a water separator 4 and intercept valve 8 to low pressure turbine stages 6, 7 includes a braking turbine 12 to which steam can be supplied through valve 13 to prevent plant overspeed. Valves 2, 8 are controlled by speed responsive governors such that should turbine speed rise to 102À5% of the rated value valve 8 becomes fully closed and if the speed rises further to 105% then valve 2 becomes fully closed. Braking valve 13 remains closed during normal operation but in one arrangement, Fig. 3 (not shown) begins to open if the speed rises to 106% and is fully open at 108À5%, thus generating a braking torque having a maximum value of 10% of the rated output of the main turbines. In the arrangement shown, however, braking valve 13 opens when the rate at which intercept valve 8 closes exceeds a predetermined rate as sensed by a differentiating mechanism 72. The system includes a speed governor controlled pilot valve 67 regulating the flow of liquid to a servomotor 60 connected to intercept valve 8. Movement of the piston rod 64 of servomotor 60 is transmitted via links 66, 73, 74, 75 to the left end 80a of a lever 80 forming part of the differentiating mechanism 72. During normal operation movement of rod 64 is slow and hence lever 80 pivots about its right end 80c since the latter is supported by springs 81, 82 which resist movement and because piston 77 of a dashpot 76 can follow the slow movement of lever 80. Lever end 80c is connected through links 83, 84 to the pilot valve 85 of braking valve servomotor 87 and since end 80c does not move pilot valve 85 and braking valve 13 remain closed. However should intercept valve 8 close rapidly, e.g. resulting from loss of load, the left end 80a of lever 80 moves rapidly downwards. Since piston 77 of dashpot 76 cannot move quickly lever 80 rotates around point 80b causing the spool of pilot valve 85 to rise and admit liquid to servomotor 87 to open braking valve 13. The characteristics of dashpot 76 can be adjusted by a needle valve 79 in by-pass passage 78. In the arrangement shown braking valve 13 is in series with valves 2, 8 so that braking turbine 12 is supplied with residual steam remaining in line 9 and stages 6, 7 after closure of valve 8. However in a modification, Fig. 1 (not shown), valve 13 is in parallel with valves 2, 8 and receives steam directly from boiler 1.
Patent GB-403686-A (GB)
Title: Arrangement for the regenerative braking of d. c. motors
IPC: H02P3/14
Filed: 1932-06-17
Abstract: 403,686. Field control of D.C. motors. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Võsteras, Sweden. June 17, 1932, No. 17175. Convention date, June 18, 1931. [Class 38 (iii).] Regenerative and non-regenerative braking.- The fields 7 of motors 1, e.g. railway motors, are energized from the supply in series with a bucking machine 3 which has a field 10 carrying the whole or part of the motor current, and a field 11 connected to a supply by a variable voltage divider 12. A circuit-breaker 4 is initially closed by contacts 13 on a controller, and is maintained closed over contacts of a switch 9 and a resistance 14. The motors operate with a series characteristic when driving and may be regeneratively braked with almost constant torque by increasing the excitation of the field 11 of the machine 3. The switch 9 is centrifugally operated by the machine 3 when its speed falls, to open the circuit-breaker 4, and connect the motors for rheostatic braking on a resistance 6, the motor fields 7 being thus guarded against excessive current. The machine 3 may be a motor and may drive a ventilator or a generator connected to a battery, or it may be driven by a motor connected to the line. Instead of the centrifugal switch 9, a relay connected in the motor field circuit, or across the machine 3 may be used.
Patent GB-455152-A (GB)
Title: Improvements relating to electrical resistances for heating apparatus
IPC: F24H3/00
Filed: 1935-06-14
Abstract: 455,152. Electric heating resistances. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE SAINT-GOBAIN, CHAUNY, & CIREY, 1<bis>, Place des Saussaies, Paris. June 14, 1935, Nos. 17226 and 17228. Convention dates, June 14, 1934 and Jan. 28, 1935. [Class 39 (iii)] Heating resistances comprise a tempered glass support on to which pulverized molten metal has been projected in ribbon form by a current of gas. Aluminium may be projected by an air stream which oxidizes part of the metal so as to obtain a mixture of predetermined specific resistance. The support may consist of a plate a on which is formed a sinuous ribbon resistance b. A series of such plates are mounted vertically in spring contacts f to form a radiator. A hot plate is formed by a glass plate with a ribbon on the underside and spaced above an insulating plate. Convection type radiators are described employing horizontal or vertical open-ended glass tubes with ribbons formed on the outside or insides of the tubes. Specification 413,900, [Group II], is referred to. The Specification as open to inspection under Sect. 91 describes the application of the invention to a windscreen and the provision of terminal pins soldered to the ribbon. This subject-matter does not appear in the Specification as accepted.
Patent GB-495580-A (GB)
Title: Improvements in and relating to fasteners suitable for connecting the ends of straps, belts or the like
IPC: B65D63/08
Filed: 1937-06-21
Abstract: 495,580. Strap fastenings. HOSKING, H. G. W. June 21, 1937, No. 17287. [Class 44] A strap fastening comprises a plate 1 secured to one strap end 7 and provided with an upturned end 4 with a slot 6, and a plate 2 provided with a series of slots 12 and with a leather tongue 14 secured thereto as by rivets. Plate 2 is secured to the other strap end 13. The end 4 is inserted from below through a selected slot 12 and is secured by passing the tongue 14 through slot 6 which is exposed above the surface of plate 2. Part 4 is rounded as shown, and curbed as seen in side view, its concave face being towards or away from strap end 7. Alternatively, the tongue may be of metal or may be replaced by a split pin.
Patent GB-439686-A (GB)
Title: Improvements in or relating to recuperators for furnaces
IPC: F28F21/04
Filed: 1934-06-12
Abstract: 439,686. Recuperators. FITCH, W. H., 986, Woodland Avenue, Plainfield, New Jersey, U.S.A. June 12, 1934, No. 17306. Convention date, June 12, 1933. Drawings to Specification. [Class 51 (i)] In a furnace recuperator comprising horizontal air-heating tubes supported at each end in vertical walls, the latter are constructed of refractory blocks each formed with grooves for engagement with the tubes and with undercut recesses at the edges which bound the outer face of the block, these recesses being caulked with plastic cement, when the blocks are assembled, to reduce leakage through the wall. The construction described is identical with that shown in Figs. 5, 6 and 7 of Specification 439,685. Specifications 130,471 and 282,443, [both in Class 51 (i)], also are referred to.
Patent GB-1100596-A (GB)
Title: Improvements in or relating to cam/or crank-actuated compression tools
Inventor: LEE JAMES ALEXANDER
IPC: H01R43/042
Filed: 1964-04-27
Abstract: 1,100,596. Crimping. PLESSEY - UK Ltd. 27 April, 1965 [27 April, 1964], No. 17318/64. Heading B3Q. A cam or crank operated compression tool, suitable for use in crimping metal terminals, includes an adjustable indexing ring which varies the amount of lost motion in the drive of the tool and allows operation of the tool on terminals of relatively large size with a small load or on smaller terminals with a higher load. The tool includes a motor driven cam 5 which is actuated by a trigger 4 and serves to move a barrel 6, having a cam follower 7, longitudinally in the tool. Movement of the barrel causes a tappet pad 21, including integral rods 20 and 22, to close crimping jaws 16-19. As the barrel moves to the right the pad 21 at first remains in position with the jaw 16 in contact with a terminal until a degree of lost motion is taken up and the spring 24 compressed. A tappet 10, mounted for limited axial movement in the barrel, then contacts the pad 21 and the force of a pack of spring washers 15 is exerted on the crimping jaws. To crimp a small terminal with a high load, the ring 25 is rotated by a handle 33, Fig. 2, to similarly rotate the tappet 21 until a peg 28 on the tappet is aligned with a slot 30 in the barrel 6. The crimping jaws are then in a closer spaced condition than when the peg faces the slot 31. As the lost motion is taken up the faces of dogs 35 on the tappet 10 engage similar faces of dogs 36 such that the washers 15 are comparatively heavily compressed as the crimping operation takes place. In the alternative position of the handle 33 and tappet 21, the dogs 35 and 36 interengage, resulting in a lighter compression of the washers, and thus a smaller force, during crimping. A spring loaded locking dog 38 holds the ring 25 firmly in either of its two positions.