baber/WOPTO huggingface dataset:
Patent GB-911069-A (GB)
Title: Improvements relating to polymerization catalysts and materials used in connection therewith
IPC: G01N31/16
Filed: 1959-04-24
Abstract: Metal alkyls are titrated colorimetrically in hydrocarbon medium against (a) a transition metal compound (see below) which is reduced by said alkyl or (b) a metal alkyl-consuming substance, e.g. impurities in the solvent, or isopropanol, using the aforesaid transition metal compound as an indicator.  The process is employed (a) to neutralize metal alkyl-consuming impurities in a hydrocarbon solvent and may be followed by distillation under an inert atmosphere and preferably in the presence of a small amount of aluminium alkyl or by addition of Ziegler catalyst components in the proportions required in the final catalyst (b) to determine the concentration of free metal alkyl in a hydrocarbon solution by titrating said solution with a standard solution of metal alkyl-consuming impurities or by titrating a standard solution of isopropanol with the solution to be estimated and (c) to determine the concentration of a hydrocarbon solution of the transition metal compound by combining with a standard isopropanol solution and titrating with a standard solution of a metal alkyl.  Transitional metals are defined as metals of Groups IV(a), V(a), VI(a) and VIII of the Periodic Table and the preferred compounds thereof are halides:  TiCl4, VOCl3, ZrCl4, CrOCl2 are specified.  Specified metal alkyls are aluminium alkyls (tri-isobutyl aluminium, di-isobutyl aluminium hydride), zinc alkyls and tetraethyl lead. Specified hydrocarbons are benzene, cyclohexane, heptane and iso-octane.ALSO:The solvent employed in carrying out polymerizations in a hydrocarbon solvent using a Ziegler catalyst is first titrated colorimetrically with a solution of a metal alkyl using as indicator a compound of a transition metal which is reduced by a metal alkyl to neutralize metal alkyl-consuming impurities and if desired, distilled, and thereafter Ziegler catalyst components are added in the proportions desired in the final catalyst.  In Example 2 ethylene, purified by bubbling through triisobutyl aluminium, is polymerized by continuous introduction into a solution of isooctane containing a catalyst produced in this way from stated proportions of titanium tetrachloride and triisobutyl aluminium; a comparative example in which the solvent is not first purified is also given. The process is stated to be equally applicable to propylene, butene and butadiene polymerizations.
Patent GB-832643-A (GB)
Title: Improvements in or relating to tube bending machines
IPC: B21D7/14
Filed: 1957-05-02
Abstract: 832,643. Angular bending. HAWTIN, P. May 2, 1958 [May 2, 1957], No. 14078/57. Class 83 (4). Mechanism for controlling a tube bending machine of the rotary head type comprises means for effecting actuation of the bend release of such a machine, a rotary member capable also of axial displacement, selector means capable of being set to ensure stoppage of said rotary member in a preselected angular position or successively in a selected sequence of different angular positions corresponding to the angle or different angles of bend required to be produced by the machine and means adapted to be actuated as a result of operation of the workhead of said machine to co-operate with said rotary member on stoppage thereof thereby to effect axial displacement of said member with resultant operation of the means for effecting actuation of the bend release mechanism. A cup cam 12 rotated in synchronism with the bender head vertically moves a slider 15 which engages a step 26 on a turret member 23, of the same general contour as the cam 12, after rotation of the cam 12 an amount dependent on the angular setting of the turret 23. The stop 15 lifts the turret 23 to rock a lever 29 and actuate a master hydraulic cylinder 31 and thus bend release mechanism. For automatic selection of the amount of bending a disc 32 on a shaft 17, carrying the turret 23 and driven through a friction clutch 48 by a motor 44, carries a plurality of pins 33 arranged in concentric circles and held by friction means 34. Selected pins are depressed by a push-button 35 to project beneath the disc 32 and when the first depressed pin hits a stop 36 rotation of the turret 23, by the motor 44, is stopped and the lever and cylinder means 29, 31 stop the bending. During return movement of the work-head to a loading position. the cam 12 has corresponding reverse movement which operates a trip lever to move the stop 36 away from the pin 33 engaging it to allow the pin to pass, whereupon the stop 36 moves back, to .halt rotation of the turret 23 when the next depressed pin engages the stop 36 to select the next angle of bend made by the tube bending machine. Every complete turn of the disc 32 causes, through a member 41 thereon and a cam 40, the stop 36 to be moved inwards into line with the next circle of pins. Pins to be depressed by the button 35 may be indicated by a pointer 52 co-operating with a scale 53.
Patent GB-1373556-A (GB)
Title: Heterocyclic compounds and their use for the control of plant metabolism
IPC: C07D233/72
Filed: 1972-03-24
Abstract: 1373556 Plant growth regulation using Imidazolidene-triones CIBA-GEIGY AG 24 March 1972 [26 March 1971 6 Aug 1971] 14083/72 Heading C1B [Also in Division C2] Agents for the control of plant metabolism, e.g. for control of fruit abscission and senescence e.g. of cut flowers or shoots, have the formula (wherein Y represents an oxygen or sulphur atom R1 represents a hydrogen atom; a C1-C18 alkyl radical; a C1-C4 alkyl radical substituted by halogen, cycloalkyl, C1-C6 alkoxy, alkoxycarbonyl, alkoxyalkoxycarbonyl, C1-C6 alkylthio or di-(C1-C6 alkyl) amino; an unsubstituted or halo-substituted C3-C18 alkenyl radical; an alkynyl, cycloaliphatic, alkoxycarbonyl alkylthiocarbonyl, benzyloxycarbonyl or alkenyloxyalkyl radical; a phenyl radical unsubstituted or substituted by halogen, nitro, C1-C6 alkyl, C1-C6 alkoxy, C1-C4 haloalkyl or cyano; a tetrahydro-3- thienyl-S,S-dioxide radical; a benzyl or phenylethyl radical unsubstituted or ring-substituted by halogen, nitro or C1-C6 alkyl; or a tetrahydrofurfuryl radical; R2 represents a C1-C18 alkyl radical; a C1-C4 alkyl radical substituted by halogen, cycloalkyl, alkoxyalkoxycarbonyl, alkenyloxy or C1-C6 alkoxy; a C3-C18 alkenyl radical; an alkynyl or cycloaliphatic radical; a phenyl radical unsubstituted or substituted by halogen, nitro, C1-C6 alkyl, C1-C4 haloalkyl or cyano; a benzyl or phenylethyl radical unsubstituted or ring-substituted by halogen, nitro or C1-C6 alkyl; or a furfuryl or tetrahydrofurfuryl radical), or an inorganic or organic acid addition salt thereof (see Division C2). These substances may be applied in the form of solid or liquid agents, to plants, into the soil or to the surface of soil. Suitable solid and liquid carriers, and adhesives, wetting agents and dispersing agents are listed. Other active materials such as insecticides, fungicides, bactericides, fungistatics, bacteriostatics, nematocides and fertilizers may be present.
Patent GB-790693-A (GB)
Title: Improvements in or relating to devices for resiliently locking the different positions of a movable member with respect to a fixed member, suitable for electric switches
IPC: B60Q1/42
Filed: 1955-05-16
Abstract: 790,693. Mechanical switches without quick action. ETABLISSEMENTS E. JAEGER. May 16, 1955 [May 21, 1954], No. 14101/55. Class 38 (5). In a device suitable for a switch in the lighting system of a vehicle a rotor 23 pivoted at 24 carries spring plungers 29 which connect a contact strip 7 with strips 9, 14, 18, and 21 by engaging circular notches 12, 13, 17, and 19, thus forming a first set of locking means; a second locking arrangement being provided by a spring-loaded pin 31 disposed in a slot of trapezium-like section and having a hemispherical head 35 which engages in recess 45, 46 in a cover-plate 39. The strip 7 is connected to a line terminal 2 and the strips 9, 14, 18 and 21 are connected to rear lamps, side lamps, dimming (or crossing) lamps, and head lamps respectively. The rotor is controlled by an arm 26 and in the " off " (full clockwise) position one plunger 29 is held in disengagement by a lug 22, and the other engages notch 12. Anti-clockwise rotation causes the first-mentioned plunger to bridge the strips 7 and 9 continuously, while the second moves easily from notch 12 to 13, and from 13 to 17 at which point the pin 31 engages the recess 45 as shown in Fig. 6. Further anticlockwise rotation to the notch 19 is effected with difficulty since the pin 31 has to transfer from recess 45 to recess 46. Return movement from notch 19 to 17 is effected easily as the pin 31 rocks in the slot 30 without disengaging recess 46. The device provides a means whereby the mechanical resistance involved in changing from one locking position to another is not constant.
Patent GB-993043-A (GB)
Title: Improvements in or relating to rotary electric machines
Inventor: RAWCLIFFE GORDON HINDLE
IPC: H02K3/28
Filed: 1961-04-20
Abstract: 993,043. Winding layouts for dynamo electric machines. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 12, 1962 April 20, 1961], No. 14244/61. Addition to 926,101. Drawings to Specification. Heading H2A. Coil-omission in asymmetrical pole-amplitude modulation as described in the parent Specification is avoided by the mutual bucking of adjacent coils. In such machines, i.e. polechanging machines in which one of the operational pole-numbers is three pole-pairs or a multiple thereof, certain coils have been omitted in the modulated connection in prior integral slot machines for the purpose of reducing the amplitudes of the poles at the ends of the modulation waves to provide a nearsinusoidal modulation wave. According to this invention, the omission of coils is avoided by energizing certain adjacent coils in bucking relationship to all the remaining coils of the coil-group providing the said poles of reduced amplitude, so that, although they are still connected in circuit, no net effect is produced by the two adjacent bucking coils. Detailed layouts are given in which, for instance, instead of omitting coils 5 and 6 of phase C, coil 6 is reversed (Fig. 1, not shown).
Patent GB-668042-A (GB)
Title: Machine for winding small closed rings with thin wire
IPC: H01F41/08
Filed: 1950-06-08
Abstract: 668,042. Coiling. MICAFIL, Ltd. June 8, 1950 [June 28, 1949], No. 14361/50. Class 83 (iv). In a machine for winding annular cores the wire storage device comprises a split circular tube 1 rotated by radially disposed rollers 4, 5 mounted on plates 16, spaced to allow passage of the wire. The rollers 5 are rotated by bevel gearing 10 from an electromotor 9. The plate 17 is fixed and the plate 16 is pressed by a spring 6 to allow the rolls 4, 5 to position and rotate the tube 1. A wire helix is inserted into the tube 1 and the end is guided by a nosepiece and a roller to a pole on the inside of the tube. The core is mounted and rotated in known manner. During rotation of the tube the core is wound and the loop is positioned between the plates and is held by a spring and guided by a finger. The machine is adjustable relatively to the core. by screws 20. In coiling wire too thin to be stored as a spiral, the wire is wound as a multi-layer coil which is inserted into the tube. To wind the multi-layer coil a mandrel comprising two semicircular members spaced by a spreader during winding. On removal of the spreader the formed coil may be removed from the mandrel.
Patent GB-1294744-A (GB)
Title: Process for the recovery of pure trimellitic anhydride
Inventor: GILLE HANS-JOACHIM
IPC: C07C51/573
Filed: 1970-03-25
Abstract: 1294744 Trimellitic anhydride CHEMIEBAU DR A ZIEREN GmbH & CO KG 25 March 1970 [29 March 1969] 14477/70 Heading C2C Pure trimellitic anhydride (containing at least 99.0% by wt. trimellitic anhydride and not more than 0.02% by wt. nitrogen) is recovered from crude trimellitic anhydride, obtained by nitric acid oxidation of a 1,2,4-trialkylbenzene and subsequent elimination of water, by distillation at no more than 20 torr and no more than 250‹ C. to distil 2-20% by wt. of crude product in a first stage, to obtain a fraction containing more volatile nitrogen-containing impurities, and distilling, under the same pressure and temperature limitations as the first stage, in a second stage a main fraction consisting of pure anhydride, leaving a residue of not more than 12% by wt. containing less volatile impurities. It is preferred to remove 3-5% by wt. of crude product in the first stage under a pressure of 5-15 torr and conduct the second stage at 3-10 torr. The crude anhydride may be freed from 1-10% by wt. of the residue prior to the two-stage distillation, e.g. by thin-layer evaporation. Pseudocumene is the preferred trialkylbenzene. An arrangement of apparatus for carrying out the process is described (not shown).
Patent GB-598951-A (GB)
Title: Improvements in or relating to thread winding machines
IPC: B65H54/52
Filed: 1944-07-29
Abstract: 598,951. Winding thread. SCHARER. K. J. (trading as MASCHINENFABRIK SCHARER). July 29, 1944. No. 14533. Convention date, Aug. 7, 1943. [Class 120 (ii)] In a thread winding machine the winding spindle is arranged in positive driving association with a thread guide drum and in the operation of the machine either the winding spindle or the thread guide drum is adjusted relatively to the other part due to the package increasing in diameter and bearing on the drum, the ratio between the speeds of spindle to drum being kept constant. The inclined winding spindle 1 is mounted in bearings in a gear box 2 and drives the shaft 14 of the drum 18 through bevel wheels 6, 7, a fluted shaft 8 and bevel wheels 11, 13. The outer bearing 16 for the shaft 14 is mounted in a bracket 17 connected to the casing 10 which is counterweighted at 20 and is guided by rollers 25, 26 engaging the rods 21, 22. The thread guide is actuated by a gear 27 integral with the bevel gear 13. As winding proceeds the casing 10 carrying the drum 18 is forced downwardly by the growing package A. The construction may be such that the growing package comes into contact with the drum only after it has reached a predetermined size. Auxiliary gearing may be included to reduce the winding speed of both spindle and drum as the diameter of the package A increases.
Patent GB-457097-A (GB)
Title: Tank
IPC: B65D88/02
Filed: 1935-05-17
Abstract: A tank having four wedge-shaped walls may float in a vat containing water and may contain filtering-material through which the water may be drawn off; the water may also be mixed with spirit or coal-dust. Further, the tank may float on a mixture of liquids of different specific gravities one of which may be treated in the tank.  The tank may be formed from two four-cornered sheet-metal plates bent about their diagonals and may be subdivided by triangular partitions. Several tanks may be grouped radially about a common centre.
Patent GB-552912-A (GB)
Title: Improvements relating to filtering and drying apparatus
IPC: B04B3/00
Filed: 1941-11-11
Abstract: 552,912. Centrifugal separators. MAY, J., and BROWNLOW, R. S. Nov. 11, 1941, Nos. 14542/41 and 14645/42. [Class 23] A perforated rotary drum c carrying a filter bed a is closed at both ends and air is excluded, so that the discharge of the liquid through the drum operates, pumplike, to draw the mixture through the inlet provided by the hollow shaft b. When the drum is stopped and the end g<SP>1</SP> of the shaft g opened, the pressure in the surrounding casing i causes a back flow through the filter bed which dislodges the solid deposit and discharges it through the shaft g. When several drums are enclosed in one casing, they are stopped one at a time for discharging the solids and suitable valves are provided for this purpose. The filter bed may be a mixture of kieselguhr and silicon or quartzite or discs of paper or metal or a helical strip providing narrow filtering channels between adjacent convolutions.
Patent GB-572521-A (GB)
Title: Improvements in or relating to multi-compartment packages
IPC: B65D75/14
Filed: 1943-09-08
Abstract: 572,521. Multi-compartment packages. SMITH & SONS (ENGLAND), Ltd., S. (formerly SMITH & SONS (MOTOR ACCESSORIES), Ltd., S.), and CUNNINGHAM, A. E. Sept. 8, 1943, No. 14753. [Classes 18 and 66] A multi-compartment package, e.g. for hair springs, in which each compartment is sealed in such a way that any one of them may be opened without unsealing the others, is oonstructed from a frangible transparent or opaque, cellulosic, thermoplastic, &c. sheet 10, on panel 14 of which is laid a perforated sheet 15 constituting the compartments, a backing sheet 13 being superposed on this and panel 12 of sheet 10 being secured to the outer surface of sheet 13. Flaps 11 are folded over and secured, e.g. by heat and pressure to complete the package. If the frangible sheet is opaque it may be marked to define the partitions and/or the contents.
Patent GB-984401-A (GB)
Title: Automatic spin filter
IPC: B01D29/00
Filed: 1963-04-16
Abstract: 984,401. Rotary filters. SWIMQUIP Inc. April 16, 1963 [Dec. 26, 1962], No. 14800/63. Heading B1D. A filter structure comprises a tank, a filter element mounted for rotation within the tank, a tank inlet and outlet, the outlet being in communication with the interior of the filter element, the filter element comprising a turbine runner in the path of movement of fluid through the tank for imparting rotation to the filter element. As shown, filter elements 17 are mounted rotationally on tube 18 in tank 10. Inlet 19 and outlet 20 co-operate with fittings giving access to the interior of the tank and tube 18 respectively. Water entering at 19 passes through a diatomaceous earth coating (not shown) on elements 17 to collection tube 18 and outlet 20. For backwashing the flow is reversed, but a waste conduit 46 is then opened. A runner 47 is instrumental in causing rotation of tube 18. The elements 17 are shown in detail in Figs. 2 and 3 and include a moulded core 50 and a fabric septum 51 supported by the core.
Patent GB-776786-A (GB)
Title: Power transmission device for tractors and other automotive vehicles having a power take-off shaft
IPC: B60K17/28
Filed: 1954-05-20
Abstract: 776,786. Vehicle driving gear and power take-off mechanisms. BUHRER, F. May 20, 1954 [Nov. 30, 1953], No. 14820/54. Class 79(2). A power take-off shaft 21 is driven from the vehicle engine K through a change speed gear G, which comprises an input shaft 9a an output shaft 9 and two counter shafts 10, 22, the shaft 21 being selectively drivable from either counter shaft. As shown the engine drives the gear G through supplementary two-speed gear Z which comprises gears 2 . . . 5, a lay shaft 28 and clutches 7, 8. A gear 19 on the shaft 9 can be brought into mesh with a gear 29 on the shaft 22 for the reverse drive of the gear G, and a gear 27 on the shaft 22 meshes with the gear 4. The shaft 21 can be coupled to the shaft 10 through a clutch 23 or to the shaft 22 by a gear 25 meshing with a gear 24, the clutch 23 and sliding of the gear 25 being conjointly controlled by a lever 86. Another power take-off shaft 33 is connected through gears 31, 32 with a gear 30 which can mesh with a gear 16 or can be connected by a clutch 34 to the shaft 22. Reference has been directed by the Comptroller to Specification 728,924.
Patent GB-675102-A (GB)
Title: Machine for coating surfaces of ditches, tunnels and the like
IPC: E21D11/10
Filed: 1949-06-02
Abstract: A machine for forming coatings, e.g. of cement, mortar, plaster, asphalt, waxes, resins or gums, on the surfaces of passages such as ditches or tunnels comprises a carriage 410, Fig. 1, adapted to travel along the passage and on which is mounted a rotary or oscillating nozzle 440 movable in a vertical plane and adapted to project the material progressively on the surface to be coated, the carriage also carrying a rotary or oscillating shaft 450 projecting beyond the carriage on which trowels 474 are mounted by means of spring controlled quadrilateral frames of hinged rods 461, 462, 466, 467, Fig. 2, the the spring 475 being normally operative to pull the rods towards each other and move the trowel 474 outwardly.  For lining a tunnel with cement grout, a grout conducting conduit 415, Fig. 1, is coaxial on a frame 416 supported on the carriage by a universal mounting to enable accurate centering of the conduit 415 within the tunnel.  The conduit 415 is rotated by means of a motor 424 through gearing in <PICT:0675102/III/1> <PICT:0675102/III/2> <PICT:0675102/III/3> <PICT:0675102/III/4> mesh with a gear 427 fixed to the conduit.  Dry grout is fed to the conduit under air pressure through a hose 428 connected to a pipe 430, Fig. 5, threaded into a housing 432 through which water is admitted to the conduit from a pipe 434.  The conduit 415 is rotatably mounted on the housing 432 and within a second housing 435 through which air is conducted from a pipe 436 and through an annular chamber 438 and pipe 444 to an air jacket 443 which controls the discharge of material from the nozzle 440.  A tubular shaft 442, Fig. 3, coaxial and integral with the conduit extends beyond it and a sleeve 447 non-rotatably mounted on the shaft 442 supports a segmental shield 448 which prevents splashing of the grout rearwardly of the nozzle.  The shaft 450 carrying the trowels is rotatably mounted on the sleeve 447 and is geared to rotate with the conduit 415.  Alternative means for rotating the trowel shaft 450 are shown in Fig. 5.  Each trowel 474, Fig. 2, is mounted on the frame for free swiveling movement and a cable 476 connected to each hinge joint 468 extends into the shaft 450, Fig. 4, to a piston rod 479 carrying a piston 480 operative within the shaft.  A spring 481 disposed on the rod between an abutment 482 and the piston normally acts to retract the trowels but when the machine is in operation air enters the shaft through the pipe 445 and forces the piston to the left, compressing the spring 481 and permitting the springs 475, Fig. 2, to move the trowels outwardly into contact with the lining.  A circular shield 484, Fig. 1, is mounted on the shaft 450 for shielding the troweled surface against grouting splash and this is assisted by the use of a fan 500 to create suction through the tunnel.
Patent GB-520423-A (GB)
Title: Improvements in or relating to circuits comprising electric discharge tubes
IPC: H03F3/02
Filed: 1939-05-18
Abstract: 520,423. Valve amplifying circuits. PHILIPS LAMPS, Ltd. May 18, 1939, No. 14871. Convention date, May 21, 1938. Addition to 491,063. [Class 40 (v)] In a valve having a heated cathode 2, at least one control grid, an anode 5, and an auxiliary electrode 6 emitting secondary electrons, an output impedance 16, 17 being connected between electrodes 5, 6 and an intermediate point 13 of the impedance being connected to the cathode, as described in the parent Specification, the point 13 is so chosen that the absolute values of the potential fluctuations at electrodes 5, 6 are substantially equal and a balanced push-pull output may be obtained.