baber/WOPTO huggingface dataset:
Patent GB-743930-A (GB)
Title: Improvements in or relating to a method of preparing finely divided calcium silicate
Inventor: PLATT WILLIAM
IPC: C01B33/24
Filed: 1953-06-05
Abstract: A butadiene styrene synthetic rubber has incorporated therein an improved calcium silicate (see Group III) of particle size lying between 0.015 and 0.035 microns.ALSO:<PICT:0743930/III/1> Finely-divided calcium silicate of particle size generally in the range 0.015-0.035 microns is prepared by merging concurrent streams of aqueous calcium salt solution and aqueous alkali metal silicate solution, subjecting the streams to turbulent agitation at a point adjacent that where they are merged, and withdrawing a stream of resulting calcium silicate from the point of agitation. Preferably a stream of said aqueous solution of an alkali metal silicate is flowed into a parallel, concurrent and encompassing stream of aqueous calcium salt solution.  As the calcium salt, calcium chloride is usually employed, preferably together with 0.1 lbs. NaCl per lb. CaCl2.  Preferred procedures include the use of calcium chloride solutions containing 50-150 gms./1; sodium silicate solutions containing 5-15 per cent by weight of sodium silicate; sodium silicate of composition Na2O (SiO2) x where x=2-4.  Fig. 2 shows a suitable form of apparatus in which the silicate solution is injected through longitudinally adjustable pipe 5, at the same or at, e.g. 3-5 times the speed of the calcium solution from the tank 3.  The relative sizes of the pipes 1 and 5 is regulated in accordance with the relative velocity of the liquids.  The centrifugal pump 2, placed at or just beyond the position of maximum turbulence passes the mixture into the tank 3 for recycling together with make-up calcium solution from pipe 4 to maintain a small excess of calcium chloride in the slurry.  The product is drawn off as a slurry at 7.  Other flow systems are referred to and illustrated, using both continuous and batch operation.  The mixture issuing from the pump may less desirably be conducted directly to apparatus for collecting the precipitate.  Examples are given.ALSO:Natural rubber has incorporated therein an improved calcium silicate of particle size lying between 0.015 and 0.035 microns prepared by merging concurrent streams of aqueous calcium salt solution and aqueous alkali metal silicate solution, subjecting the streams to turbulent agitation at a point adjacent that at which they are merged, and withdrawing a stream of resulting calcium silicate from the point of agitation (see Group III).
Patent GB-211400-A (GB)
Title: Improvements in apparatus for displaying illuminated advertisements or the like
IPC: G09F19/18
Filed: 1923-06-15
Abstract: 211,400. Stewart, S. W. H., and Davies, E. J. June 15, 1923. Transparencies, travelling.-In an optical projection apparatus for the automatic successive display of slides, the slides are carried in a vertical intermittently rotated container and fall in turn into the path of the light beam. The container comprises two side discs 5 having preferably radial slots 7 which hold the slides 6. A flat 10 limits the inner position of the slides which are prevented from falling out by curved members 12, 13 each spaced apart at the bottom to allow the lowest slide to drop on to a vertically reciprocating frame 54 having crossbars 83 which bridge the gaps in the members 12, 13. The apparatus is actuated by a motor 28 which, through worm gearing 24, 25 and a chain, drives a cam-wheel 18 which turns the container 5, locks it in position, lowers a slide on the frame 54, open and closes a shutter, or illuminates and extinguishes a lamp, raises the frame 54, unlocks the container 5 and again turns it through the required angle to allow the next slide to fall on the frame 54. The means for turning the container 5 comprises a pawl 67 pivoted at 66 and engaging a ratchet-wheel 11 on the container shaft 3. The pawl 67 is adjustably fixed to a lever 65 spring-held at 68 and carrying a roller 64 engaged by a cam 58 on the wheel 18. The container is then locked by a roller 82 which engages grooves 9 in the periphery of one of the discs 5, and is mounted on the free end of a lever 62 pulled by a spring 69 and pivoted at 63 to the framework 1 and at 61 to a link 60 carrying a pin 59 raised by a lever 86 operated by the cam 58. The frame 54 is moved into its uppermost position to receive a shoe by a cam 48 raising a roller 49 on a lever 50 rigidly connected to arms 52, 52a, and is lowered by gravity. The hinged shutters 40, 43 have crank arms 38, 41 pivoted to a floating lever 37 lifted by a push-member 35 and retracted by a spring 46. The member 35 is reciprocated by a rockshaft 32 having a cranked end 31 engaged by a cam 30. The screen, slide-changing device, and electric lamp are all enclosed. Cooling fans are arranged on the motor shaft and in a funnel over the lamp.
Patent GB-720221-A (GB)
Title: Improvements in or relating to paper-making machines
Inventor: DEARDEN HAROLD VICTOR
IPC: D21F2/00
Filed: 1952-06-23
Abstract: 720,221. Fourdrinier paper-making machines. MILLSPAUGH, Ltd. May 7, 1953 [June 23, 1952], No. 15715/52. Class 96. At the couch end of a Fourdrinier papermaking machine, the wire-cloth and a press felt pass between a small blow roll 28 and a suction roll 15, the suction zone 15A of which can be shortened and positioned by adjustment screws 54 and 54A which move sealing-pads 51 and 49, so as to pick up the narrow leading strip or " tail " of the web which is cut by jets over the wire-cloth when starting up the machine. The blow roll 28 is supported from a grooved supply pipe 27 to allow it to be adjusted longitudinally through a support 26 and through another support (not shown) which is spring- loaded to hold the blow roll against the wirecloth and which has a grub screw entering the groove in the pipe 27 to hold the roll, &c., in position with its air jet opposite the shortened suction-zone'of the roll 15. The jet, which may include a water spray, raises the web from the wire-cloth. Specifications 365,373, 458,758 and 717,251 are referred to.
Patent GB-1375508-A (GB)
IPC: C08F255/02
Filed: 1972-04-05
Abstract: 1375508 Graft polymerization process STAMICARBON NV 5 April 1972 [10 April 1971] 15728/72 Heading C3G A peroxydicarbonate initiator is used in the preparation of a graft polymer from a styrene or acrylic monomer and a substantially saturated rubbery terpolymer derived from ethylene, one or more alkenes containing at least 3 carbon atoms per molecule and a polyunsaturated monomer. Examples are given in which the peroxydicarbonate used is cyclohexyl peroxydicarbonate, tertiary butyl cyclohexyl peroxydicarbonate or diisopropylperoxydicarbonate; ethylene - propylene - dicyclopentadiene rubber is grafted with styrene and acrylonitrile or ethylene - propylene - dicyclopentadiene - 5- ethylidene-2-norbomene rubber is grafted with styrene and acrylonitrile, or styrene and methacrylonitrile, or acrylonitrile and methyl acrylate and the graft polymerizations are carried out in heptane. Each graft polymer is blended with a copolymer of the corresponding graft  monomers.
Patent GB-363283-A (GB)
Title: Improvements in rolling mills for widening out tubes
IPC: B21B19/08
Filed: 1931-05-30
Abstract: 363,283. Making tubes. DEMAG AKT.-GES., Duisburg, Germany. May 30, 1931, No. 15896. Convention date, June 11, 1930. [Classes 83 (ii) and 83 (iv).] Rolling; drawing.-A tube 6 is widened by rolling between external conical skew rolls 4 and a conical mandrel head with rolls 3 after which the tube is smoothed by external rolls 7 while supported internally by a helical feed rib or other ribs 8 or rolls and is finally made circular by a former ring 9 rotated by chain wheel 11 faster or slower than the tube.
Patent GB-529909-A (GB)
Title: Improvements in and relating to the control of electrically operated soot blowers
IPC: H02P1/58
Filed: 1939-05-30
Abstract: 529.909. Control of several motors. BRITISH THOMSON-HOUSTON CO., Ltd., and JEFFERSON, H. F. May 30, 1939, No. 15915. [Class 38 (iii) ] Each of the retractable heads of'a soot-blowing equipment is driven by its own motor, started in dependence on the operation of the preceding head, and,timed so that the. head moves into its blowing position at the time the preceding head moves away. A timing relay TO1 may be associated with each head to control the energization of the contactor F2 for the motor of the succeeding head, the time settling being adjusted so that the desired overlay is obtained. The forward and reverse contactors F1, R1, of each head are also controlled by individual timing relays T1 to give the desired forward and backward movements of the blower. A single pair of timing relays is sufficient where the head motors are connected alternately to separate supply circuits each controlled by a pair of reversing contactors. In a system as described in Specification 526,405 the timing is adjusted by selecting an appropriate contact on the uniselector switch for initiating starting of the next head. In this arrangement also the motors may be energized alternately from two supply circuits controlled by reversing contactors.
Patent GB-703160-A (GB)
Title: Manufacture of organic phosphorus compounds having insecticidal properties
IPC: C07F9/24
Filed: 1950-06-26
Abstract: Insecticidal compositions of which bis-(bis-dialkylamino)-phosphonous anhydrides are major constituents are made by reacting two mol. proportions of a bis-(dialkylamino)-halogen-phosphine oxide in one operation at a raised temperature with about two mol. proportions of an inorganic alkaline condensing agent which in the presence of water is capable of providing a high concentration of free hydroxyl ions. Specified condensing agents are sodium or potassium hydroxide and tri-sodium phosphate.  Preferably the alkyl groups contain not more than 5 C atoms.  Chlorine and bromine are specified halogens. Advantageously water is removed as formed by azeotropic distillation, e.g. with toluene.  The oxide used as starting material may be made in situ, e.g. by reacting anhydrous dimethylamine with phosphorous oxychloride in an organic solvent bis-(dimethylamino)-chlorophosphine oxide may be made.  In examples in which the condensation is effected whilst water is removed azeotropically bis-(dimethylamino)-chloro-phosphine oxide is reacted with (1) sodium hydroxide in toluene, (2) sodium hydroxide in benzene, (5) trisodium phosphate in toluene and (6) potassium hydroxide in toluene, in (4) bis-(dimethylamino)-bromophosphine oxide prepared from dimethylamine and phosphorus oxybromide is reacted with sodium hydroxide in toluene and in (3) and (7) anhydrous dimethylamine is reacted with phosphorus oxychloride in toluene, dimethylamine hydrochloride is removed, and the product respectively reacted with sodium hydroxide and caustic potash.  Specifications 631,549 and 652,981 are referred to.
Patent GB-402161-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/10
Filed: 1932-06-06
Abstract: 402,161. Knitting-machines. SPIERS, Ltd., W., XL Works, Walnut Street, Leicester, and KENT, A. W., Swithland, Leicester Road, Groby, Leicestershire. June 6, 1932, No. 15943. [Class 74 (ii).] The yarn-guides of a superposed cylinder or other circular machine are selected and actuated by a member 5 which is rotated by pattern mechanism to bring a projection 6 thereon into register with the tail-piece 10 of a yarn-guide 1 and is moved axially to move the yarn-guide into operative position. Movement in the opposite axial direction moves the yarn guide or guides previously operative into inoperative position, a flange 7 on the member 5 engaging the guide or guides. A gap is provided in the flange 7 in alignment with the projection 6 so that the selected guide 1 is not returned to inoperative position. The yarn-guides 1 are preferably pivoted in a bracket 1 with the tail-pieces 10 arranged radially with respect to the member 5, and with the yarn-delivering ends in close proximity to each other. The angular movement of the member 5 may be controlled by stops 80 of different heights on the timing chain 79, the stops 80 acting, upon a lever 81, connected by a bell-crank lever 83 and links 86, 89, 92 to the spindle 9 carrying the member 5. The means for moving the member 5 axially preferably comprises a drum 31 having a cam groove 35 receiving a roller 41 upon a lever 39, secured by a link 42 to a lever 43 in engagement with the member 5. A yarn trapping and severing device common to all of the guides 1 may be provided, operated by a second cam groove 35 in the drum 31. A finger 27 is actuated when a yarn-guide is moved into operative position to engage the yarn extending from the guide to the trapper and to lay it in a position for definite engagement by the needles. The finger 27 preferably has a V-shaped yarn engaging end. The timing chain 79 may be racked at intervals of two or more courses by a pawl and ratchet mechanism 106, 107 operated by a cam 108 driven at half cylinder speed. Auxiliary driving means for the chain 79 may be provided, comprising a pawl 113 arranged on the opposite side of the cam axis to the pawl 106 so that the pawls 106, 113 may be operated alternately. The auxiliary pawl may be rendered inoperative by a bluff 121 movable by a lever 81 acted upon by dogs on the chain 79. 402,176. Coated fabrics. GREAVES, G., Beechwood, Heyrod, Stalybridge, and FARRAND, T., Castle View, Staley Road, Mossley, near Manchester. July 2, 1932, Nos. 18728 and 25754. [Class 140.] A printer's blanket is woven from warp threads of flax, linen, or hemp, or flax or linen and hemp, and weft threads of wool, the weight of the weft being about twice the weight of the warp, and one side of the blanket is proofed with rubber or an artificial leather composition.
Patent GB-738495-A (GB)
Title: Device for inflating tyres and other inflatable articles
IPC: B60S5/04
Filed: 1952-06-26
Abstract: 738,495. Storing gases under pressure; tyrevalve connectors. SOPSA SOC. R. LSOC. PER LO SFRUTTAMENTO ANIDRIDI. June 26, 1952 [June 29, 1951], No. 16046/52. Classes 8 (2) and 99 (1). [Also in Group XXXIV] A portable gasstorage bottle 1, for inflating tyres or other pneumatic articles, has a lagged body sheath 2 and carries in its neck a valve 3 which accommodates an axially - displaceable gas discharge tube 5 having at its inner end a resilient sealing member 6 adapted normally to seal the valve body from communication with the interior of the bottle, a bell-shaped valve-operating handle 13 being secured to the tube 5 to surround and protect the valve 3 and the bottle neck. As shown, the valve 3, which has a gland nut 10 screwed into its outer end, is screwed into the bottle neck and the discharge tube 5 is screwed into the nut 10 for axial displacement, on rotation, limited by radial pins 11 in the gland nut 10 engaging in a groove in the tube 5. The tube 5 projects outwardly from the valve to receive the handle 13 and its projecting end is screw-threaded to receive an adaptor for connection with the tyre or like inflating valve. The adaptor, Fig. 2, comprises a base 15 and a head 18 connected by a resilient rubber or like bush 16, the base 15 carrying a tube 17 which projects into an annular rubber or like seal 21 within the head 18. The seal 21 is retained by an apertured cap 19 screwed on the head 18 and is deformable, to grip an inflating valve received therewithin, by cams 20a which act on a loose washer 17a adjacent the seal base and are carried on lever arms 20 journalled in the adaptor head 18. In an alternative construction to provide for operation of the bottle in inverted or upright positions the tube 5 of the bottle valve extends to open near the bottom of the bottle, perforations being provided in the tube in the region of the bottle neck. The bottle may contain liquefied gas, or suitable gas generating reactors.
Patent GB-1009629-A (GB)
Title: Electro-chemical flow cell
IPC: G01N27/28
Filed: 1963-04-24
Abstract: 1,009,629. Electro chemical test-apparatus. BECKMAN INSTRUMENTS Inc. April 24,1963 [May 17, 1962], No. 16088/63. Heading G1N. An electrochemical flow cell comprises a block 15 of electrically insulating material having a narrow bore, or cannula 16, therethrough and two openings 20 and 21 carrying electrodes 22 and 30, the upper opening 20 being shaped so as to mate with the electrode 22 and the lower electrode 30 being slidable in the lower opening 21. As shown in Fig.1 for use in pH measurements the upper electrode is a glass electrode, a reference cell being coupled to the cannula 16 through passage 35 and a scratch on the surface of the opening 20 to allow a liquid junction between the two cells. The lower electrode comprises a threaded member 30 of insulating material carrying a noble metal conductor 32 e.g. platinum and is shaped at its end to match the glass electrode 20. The upper electrode is held in place by a spring 24. In pH measurements the lower electrode is used for earthing but in conductivity measurements the glass electrode is replaced by a further platinum electrode. The embodiment of Fig. 6 has a block in two parts for ease of cleaning the cannula and also has further electrode apertures. Fig. 8 shows a plan view of a block having three connected cannulae 16a,16b,16c,provided with plugs 62 to produce a flow past apertures 20, 20a and 20b. The apparatus may also be used for pNa, pk, redox, sulphide and halide measurements and for medical diagnosis. It is stated that the block 15 may be replaced by a block of conducting material with insulating linings and that the connections to the salt bridge relieves pressure build up in the cannula 16.
Patent GB-884964-A (GB)
Title: Improvements in or relating to manufacturing processes of electric circuits
IPC: H05K3/10
Filed: 1958-08-14
Abstract: 884,964. Printed circuits. SOC. EUROPEEUNE DE REVETEMENT CHIMIQUE SEUREC. Aug. 14, 1958 [Aug. 28, 1957], No. 26214/58. Class 37. [Also in Group XXXIX] Printed circuits are manufactured by a process comprising the steps of producing recesses on an insulating panel in the configuration of the desired circuit pattern, coating the raised portions of the panel with a material which inhibits the deposition of metal thereon and finally applying a layer of metallization to the panel, the metallization being effective only in the recesses. Fig. 3 shows the invention applied to the production of the circuit of Fig. 2. The coil 101 comprises two halves on opposite sides of the panel 100 connected through the hole 104. A hole 112 bored in the thickness of the panel makes contact between the terminals 105, the mid-point of the coil at 104 and the common plate 108-109 of the two capacitors. In a modification, Figs. 8 and 9, the circuit is formed on two panels, that bearing the capacitors, Fig. 9, plugging into the other one, Fig. 8. A second circuit to which the invention may be applied comprises a rectangular array of ferrite cores, Fig. 16, the cores being interconnected by printed conductors 302, 303 formed upon the insulating panel 300. The ferrite cores are contained in recesses in the panel 300, being retained in place by washers 305.
Patent GB-1093984-A (GB)
Title: Two coloured tape
IPC: B29C59/02
Filed: 1966-04-14
Abstract: An embossable sheet material comprises a base sheet having a front surface and a back surface, the base sheet being formed of a transparent rigid organic resin having a structure and composition such that permanent cold flow deformation thereof to form embossments thereon renders such resin opaque in the areas of deformation of the embossments, a transparent top coat having a first colouring agent uniformly distributed therethrough and carried by the base sheet on the front surface thereof, and a background coat having a second colouring agent uniformly distributed therethrough and carried by the base sheet on the rear surface thereof, where by the sheet material is embossable to provide opaque embossments having the colour of the first colouring agent on a field having a colour that is a combination of the colour of the first colouring agent and the colour of the background coat.  Specified base materials are polyvinyl chloride and vinylchloride-vinyl acetate copolymers.  Specified coatings are a mixture of a copolymer of acrylic and methacrylic acid esters with a vinyl chloride-vinyl acetate copolymers and a vinylchloride - vinylidene chloride copolymer.
Patent GB-331276-A (GB)
Title: Improvements in or relating to coin-controlled mechanism
IPC: G07F5/18
Filed: 1929-02-28
Abstract: 331,276. Cutler, E. N. Feb. 28, 1929. Divided on 330,276. Coin action, weight and multiple-coin.-Relates to a coin-freed mechanism for vending apparatus of the kind wherein a number of slides, doors, drawers or the like are controlled by a single coin-mechanism and wherein it is necessary that the pivoted lever of the coin mechanism shall remain tilted by the weight of the coins until one of the slides or the like is opened. The mechanism comprises a lever l, Fig. 1, pivoted at I' and provided with interchangeable counterweights l<3> to adjust the mechanism for different amounts, the lever having at one end two or more coin receptacles m<7>, m<8> associated with separate coin slots n<1>, o' and shoots n, o for coins of different denomination, the weight of which is not in proportion to their value. The distances of the receptacles m<7>, m<8> from the pivot l<1> depend on the weights of the different coins totalling the same value. The lever l is shown applied for the release of the delivery mechanism described in Specification 330,276. When the lever l is tilted by prepayment, it allows the upper end of a lever q to be moved to the left by the action of opening one of a series of doors, the others remaining locked. If two pennies are required to operate the machine. two pennies inserted in slot n', or four halfpennies in slot o<1>, or one penny in slot n<1> and two halfpennies in slot o' will overcome the counterweight l<3> to tilt the lever l. Coin-discharging mechanism; returning coin.- When the lever q is moved to the left, it strikes the end p<2> of a rod p<1> which is moved against a spring p<3> to open a slide p forming the bottom of the receptacles m<7>, m<8>, and allow the coins to drop to a money-box a<19>. The lever l, however, is held tilted by the lever q until the door, that has been opened, is closed again. Coins inserted while the lever l is tilted fall on a sloping cover m of the receptacles and pass to a return opening a<25>. Fraud, preventing.-Ratchet teeth l<6> are provided on the lever l to engage the lever q, should an attempt be made to open a second door before the first is completely closed.