baber/WOPTO huggingface dataset:
Patent GB-1021426-A (GB)
Title: Improvements in the preparation of alkyl tin compounds
Inventor: OAKES VINCENT
IPC: C07F7/22
Filed: 1962-08-22
Abstract: Di- and tri-alkyl tin halides are prepared by reacting alkyl halides with tin at e.g. 130-170 DEG  C. in the presence of metal halides and organic Lewis bases. The latter include alcohols, polyalkylene glycols, mercaptans, esters, organic phosphites, ketones, ethers, nitriles and thioethers. Preferably, compounds having two Lewis base groups, separated by two or three carbon atoms, i.e. chelating agents, are used, e.g. acetonyl acetone. The most preferred compounds have two such groups of different power, e.g. b -acetyl diethyl ether, b -ethoxy propionitrile, b -ethoxyethyl acetate and b -ethoxyethanol. Preferably at least sufficient compound is used to co-ordinate completely with the metal of the catalyst.  Halides of metals of Groups 1, 2 and 3 of the Periodic Table are the preferred catalysts.  These may be added as such or formed in situ by reaction between the alkyl halide and the appropriate metal, metal salt or alkoxide.  When the Lewis base compound is a phosphite, e.g. tri-phenyl phosphite, sufficient tin halide is formed from the tin and alkyl halide in the reaction mixture to obviate the addition of further metal halide. The preferred alkyl halide is the alkyl bromide containing 2.5 to 5% alkyl iodide.  When dialkyl tin halides are the desired product, it is desirable to carry out the reaction under anhydrous condition on an inert atmosphere. The alkyl tin halides may be hydrolysed to the corresponding oxides or hydroxides.
Patent GB-366073-A (GB)
Title: Improvements in or relating to automatic alarm and safeguarding devices against theft of motor vehicles
IPC: B60R25/04
Filed: 1930-10-28
Abstract: 366,073. Engine stop-gear. POWELL, T., 29, St. Thomas' Road, and SOMERVILLE, J. T., 1, Wick Road, both in London. Oct. 28, 1930, Nos. 32305/30 and 11551/31. [Class 122 (iv).] A switch, adapted to sound an alarm or to cut out the ignition of a motor vehicle if the latter is shaken by an unauthorized person entering it, comprises two pendulums 11, 16 mounted on the same axis 17 and carrying cooperating contacts. In the form shown in the Figure, the pendulum 16 carries two contact blocks 19, 20 which move between electricallyconnected pairs of contacts 23, 25 in the ignition-controlling and electric horn circuits respectively. The pendulums may be clamped together by a nut 18 on the bolt 17 and the pendulum 11 may also be clamped to the panel 10 by a nut 15 and bolt 13, the latter moving in a slot 14 in the panel. When the vehicle is left, the pendulums are unclamped so that they both assume a vertical " disengaged " position. The pendulum 11 is then clamped to the panel 10, so that any subsequent movement of the vehicle and of the panel 10 which is attached to it, causes the contacts 19, 20 to engage the contacts 23, 25. Push-pull switches 32, 33 may be arranged in the two circuits. In a modification (Figs. 4 to 6, not shown), the pendulums are mounted on opposite sides of the panel and there is only one pair of contacts controlling only one circuit.
Patent GB-504206-A (GB)
Title: Machine for laundering fabrics
IPC: D06F69/02
Filed: 1937-11-24
Abstract: 504,206. Rotary-drum driers. TULLIS, D. K. Nov. 24, 1937, No. 32328. [Class 34 (ii)] [Also in Group VIII] An ironing-machine of the type wherein a heated roller 1 co-operates with an endless apron or bands 3 is combined with a tumbler for shaking the goods before or after ironing. For this purpose the roller is in the form of a steam or otherwise heated annulus and the cylinder defined by the inner wall of the annulus is provided with paddles or lifters 6 and is open at one end to give access thereto.
Patent GB-358315-A (GB)
Title: Improvements in and relating to aerials for wireless transmission and/or reception
IPC: H01Q1/10
Filed: 1930-10-28
Abstract: 358,315. Aerial posts. HEATH, L. C., Arrandene, Wise Lane, Mill Hill, London, and BOISSELIER, H. C., Old Dove House, Kingsbourne Green, near Luton. Oct. 28, 1930, No. 32357. [Class 20 (i).] A vertical aerial is contained in a sectional mast which, as shown, comprises sections a, b, c, the wire n being suspended from an insulating plug f at the top. The mast is supported by brackets g from a wall. Pins d through the lower sections support the upper ones and hoods e are provided at the joints. When the mast is of metal it is insulated from the brackets g or the brackets from the wall, or it may be supported from an extension, from which it is insulated, driven into the ground. The inner surface of the sections may be enamelled to insulate them from the wire.
Patent GB-1022235-A (GB)
Title: Centrifuge
IPC: C12H6/04
Filed: 1962-07-31
Abstract: 1,022,235. Centrifugal separators. ESSO RESEARCH & ENGINEERING CO. July 31, 1962 [Aug. 1, 1961; Dec. 29, 1961 (2)], No. 32503/65. Divided out of 1,022,234. Heading B2P. A crystallized-wax/oil/brine mixture is fed through line 133 to the disc stack centrifuge. The circular rotation of the centrifuge concentrates the wax crystals at interface 140 while the lighter oil is removed from the line 142. A brine flow introduced through line 128 controls the position of interface 140 and removes the accumulated wax crystals to discharge port 141. Dividing cone 137 and the outer shell of the centrifuge bowl 139 provide the containing surfaces for the brine flow after removal from the centrifuge. The wax crystals float to the surface of the brine and can be skimmed or drained off. The brine in the original mixture coats the discs 135 and the inner surfaces of dividing cone 137.
Patent GB-732849-A (GB)
Title: Rotating remote control devices
IPC: G05D3/12
Filed: 1952-12-22
Abstract: 732,849. Electric selective signalling. STROO, W. Dec. 22, 1952 [Dec. 22, 1951], No. 32505/52. Class 40 (1). In a positional control system of the balanced bridge type, or wherein a rotary-multipointcontrol switch operates a motor to drive a similar multipoint follow-up switch, the motor drives the receiver shaft through an electromagnet clutch which at coincidence is disengaged and positively locks the receiver spindle. Transmitter. This consists of a control knob 3 rotation of which moves a wiper contact 12 over a series of circularly arranged fixed contact studs 7, and a wiper contact 9 over a fixed contact ring 6, the control knob being locked in any selected position by a spring pressed ball 4 engaging in a recess corresponding to the selected position. Receiver. This comprises a similar set of wipers 18, 21 rotatable respectively over a contact ring 16 and a ring of contact studs 14 which are individually connected to corresponding contact studs 7 at the transmitter. When the transmitter and receiver are not in correspondence, the spindle 23 carrying the receiver wipers is driven by a continuously running motor shaft 35 through gearing 34, 33, 32, 31 until coincidence is achieved, when a pot magnet 25, 26 fixed to gear wheel 31 is energized in known manner over the wipers of the two switches. The magnet core is attracted to the casing bottom 37 against the action of a spring 29 thereby retracting the gear wheel 31 axially to decouple the gears 31, 32. By frictional engagement with the casing 37 the magnet also locks the receiver spindle against rotation. The receiver spindle may be precisely positioned by one or more detents in the casing 37 engaging recesses in the magnet. A frictional coupling may be used in lieu of the toothed coupling 31, 32. The coil of the magnet may alternatively be fixed to the casing. Balanced bridge system. The contact studs 7, 14 are connected to resistors to form a bridge controlling in known manner the energization of the pot-magnet.
Patent GB-1490138-A (GB)
Title: Process for preparing phosphorothioates and phenyl-phosphonothioates
IPC: C07F9/18
Filed: 1975-08-04
Abstract: 1490138 Preparing phosphorothioates and phenylphosphonothioates DOW CHEMICAL CO 4 Aug 1975 32548/75 Heading C2P A process for the preparation of a phosphorothioate or phenylphosphonothioate of formula RO-P(S)(OR 1 )(R 2 ) or where R 1  is alkyl; R 2  is alkyl or phenyl; R is a 6-membered carbocyclic or heterocyclic aromatic radical optionally substituted by up to 3 substituents from hal, alkyl, alkoxy, alkylthio, alkylsulphinyl, CN or NO 2 , but not more than one alkylthio, alkylsulphinyl or NO 2  group, comprises reacting a chlorophosphorus compound of formula (R 1 O)(R 2 )P(S)-Cl with a salt of formula RO-M or in which M is an alkali metal in the presence of (a) a quaternary ammonium or phosphonium salt containing at least 5 C atoms and having a solubility of at least 1% in the liquid reaction medium at 25‹ C. and (b) a tertiary amine. Preferred for (a) are benzyltrimethylammonium and benzyltriethylammonium chlorides and tetrabutylammonium chloride or bromide. Preferred for (b) are quinuclidine, trimethylamine, N - methylpyrrolidine, 4 - picoline, tributylamine, dimethylaniline, N - methylmorpholine, tetramethylethylenediamine, benzyldimethylamine, triphenylamine, 1,4-diazabicyclo[2,2,2]octane, 1 - methylimidazole and 4 - dimethylaminopyridine. Preferred heterocyclic radicals R are pyridine, pyrazine and pyrimidine radicals.
Patent GB-604786-A (GB)
Title: Improvements in or relating to filters for air and gases
IPC: B01D46/28
Filed: 1945-12-03
Abstract: 604,786. Air filters. VOKES, C. G. Dec. 3, 1945, No. 32639. [Class 8 (ii)] A gas filter comprises a series of brushes arranged side by side so that their bristles though touching are not under restraint, and means are provided near the meeting place of the adjacent brushes to divert the gas towards their centres. A filter casing 1, Fig. 2, is open at two sides to provide an inlet 3 and outlet 5 and supports a line of brushes 2, the bristles 7 of which touch without restraint, and deflectors 17 divert dust-laden air towards the centre. The deflectors may take the form of troughs 20, Fig. 3, giving low pressure zones 21 in which dust is deposited and collected therefrom through ducts 22. In a modification, small diameter brushes act as deflectors. The main brushes may be zig-zagged.
Patent GB-617755-A (GB)
Title: Improvements in or relating to electrical phase shifting networks
IPC: H03H7/20
Filed: 1946-11-04
Abstract: 617,755. Phase changing. GENERAL ELECTRIC CO., Ltd., and CLARK, T. H. Nov. 4, 1946, No. 32656. [Class 38 (ii)] A phase-shifting network comprises a resistance 9 in series with a reactor 7 which has a D.C. biassing winding 11, supplied from the centre-tapped secondary 3 of a transformer 2. In parallel with the reactor 7 is connected a condenser 13 of such value that it forms a parallel resonant circuit when the D.C. winding of the reactor is not energized. As the D.C. current is varied, the reactance value changes to vary the phase of the voltage between the centre tapping 6 and the junction 10 of reactance 7 and resistance 9. This phase-change is increased by a condenser 5 in the supply. Resistance 9 may have a non-linear characteristic, e.g. it may be a lamp-filament. The transformer 1 may be replaced by a centretapped resistance.
Patent GB-512596-A (GB)
Title: Improved method of and apparatus for the manufacture of sliding clasp fasteners
IPC: B21D53/50
Filed: 1938-11-14
Abstract: 512,596. Sliding-clasp fasteners. CLARK, D'A. M. (Prentice Manufacturing Co., G. E.). Nov. 14, 1938, No. 33060. [Class 44] Sliding-clasp fasteners of the type having the fastener elements provided by a helical coil of wire are made by concomitantly feeding a continuous wire coil and a tape having a laddered portion which tape is supported at the borders of the laddered portion while the convolutions of the coil are pressed therethrough, the selvedge of the tape thereafter being turned over and sewn to the main portion of the tape. A disc 30 having a peripheral groove conforming to the wire coil C feeds the coil and presses the turns into a deep groove 26 in a second disc 24 the toothed rims 27, 28 of which support the borders of the laddered portions of the tape T, the outer border being gripped by a plate 31 on the first disc engaging the side face of the second disc 24. After leaving the discs the selvedge of the tape is turned over by a scroll piece 18 and passes beneath the presser foot 7 of a sewing needle 6.
Patent GB-857733-A (GB)
Title: An agitator for materials contained within a bag, sack or the like
IPC: B01F13/00
Filed: 1958-10-17
Abstract: 857,733. Mixing and agitating appliances. FLEETWOOD, M. R. Oct. 16, 1959 ['Oct.17, 1958], No. 33144/58. Class 86 A band appliance for agitating grain within a bag or sack comprises an archimedean screw 14 fixed on a rod 10 which is held in the handgrip 13 and rotated by the handle 12.
Patent GB-1393375-A (GB)
Title: Hydraulic copying device for a machine tool
IPC: B24B17/08
Filed: 1972-07-14
Abstract: 1393375 Copy grinding WERKZEUGMASCHINENFABRIK ADOLF WALDRICH COBURG 14 July 1972 [22 July 1971] 33164/72 Heading B3D An hydraulic copying device, e.g. for a grinding machine, comprises a sliding tracer 7 for scanning the outline of a template 6, a control piston 12 for controlling the supply of pressure medium to a working piston 9 for causing tool movement, and a tracer bushing 8 selectively movable into engagement with stops 20, 21 to control tool movement either upwardly or downwardly of the workpiece during the return stroke. During a stroke the template 6 is rotated under the control of an electrical signal from a transmitter 1 to a receiver 4, the follower 7 having either the stop 20 or the stop 21 held in engagement with the bushing 8 depending on the setting of a reversing valve 19 for supplying pressure medium from a pump 15 to the bushing 8. A spring 13 urges the piston 12 into continuous engagement with the bushing 8 through a ball 11, and the piston 12 controls movement of the working piston 9 by governing the distribution of the pressure medium from the pump 15 to a fixed cylinder 16. The displacement of the piston 12 effected through the bushing 8 by the template 6, and consequently through the piston 9 of a wedge 17, causes vertical displacement of a grinding spindle support 22 through a connection 18. To disengage the tool member from the workpiece at the end of a working stroke, the valve 19 is reversed, movement of a piston portion 7a of the tracer 7 relative to the bushing 8 causing the wedge 17 to be moved in accordance with the spacing of the stops 20, 21 in a direction governed by the initial setting of the valve 19. Alternatively, not shown, relative movement between the tracer 7 and bushing 8 may be effected electromagnetically.
Patent GB-760028-A (GB)
Title: Improvements in or relating to information transfer systems
IPC: H03K19/16
Filed: 1953-11-30
Abstract: 760,028. Pattern-movement stepping registers. BURROUGHS CORPORATION. Nov. 30, 1953 [Dec. 4, 1952], No. 33216/53. Class 106 (1). [Also in Group XXXIX] A number of bi-stable magnetic devices, each comprising a saturable core having input and output windings and a shift winding, are arranged in cascaded groups of ascending size, the arrangement being such that a number of separately-controlled outputs are derived from a single input. A magnetic shift register is shown in Fig. 3 and comprises magnetic devices 51-63 arranged in groups 65,-68, an input applied to 65 being advanced sequentially from group to group under the control of a shift pulse generator 64 to provide final outputs E and Eo. A feedback circuit 70 is connected from device 57 in the penultimate group which re-establishes the input signal condition in device 51, so permitting repetitive read-out cycles. Re-set signals are applied to the groups 66-68 from a source 72 when it is required; to destroy the stored signals. Other circuits employing saturable bi-stable magnetic devices are also described (see Group XXXIX).
Patent GB-1042726-A (GB)
Title: Stabilization of methyl chloroform
Inventor: BURSACK KENNETH FREDERICK
IPC: C07C17/42
Filed: 1963-08-22
Abstract: Stabilized methyl chloroform compositions comprise methyl chloroform containing between 0.1 and 5% nitromethane and 0.1 to 10% tertiary amyl alcohol based on the weight of methyl chloroform.  Preferably the ratio of nitromethane to amyl alcohol is between 1:1 and 1:4. When the methyl chloroform contains a minor amount of moisture the above compositions contain 0.2 to 3% nitromethane, 0.5 to 5% tertiary amyl alcohol and 0.1 to 5% of 1,3-dioxolane. The invention further comprises a method of stabilizing methyl chloroform from a liquid mixture thereof with higher boiling compounds, e.g. chlorinated hydrocarbons and hydrocarbon oils, which comprises adding to said mixture 0.01 to 5% of 1,3-dioxolane based on the weight of methyl chloroform, vaporizing the mixture in a fractional distillation zone, recovering a dioxolane containing methyl chloroform fraction from said zone and adding to said recovered fraction 0.5 to 10% of tertiary amyl alcohol and 0.1 to 5% of nitromethane based on the weight of the methyl chloroform fraction. The spent compositions may also be reconstituted by distillation and subsequent addition of tertiary amyl alcohol and nitromethane.  The compositions are used for degreasing metals, e.g. aluminium, iron, and tin-plate.
Patent GB-750934-A (GB)
Title: Method of desulphurising cathode copper
IPC: C25F1/00
Filed: 1953-12-01
Abstract: 750,934. Desulphurizing electrolytic copper. METALLGES. AKT.-GES. Dec. 1, 1953 [Dec. 12, 1952], No. 33374/53. Class 41. Copper electrodeposited from a sulphate electrolyte is freed from occluded copper sulphate and/or sulphuric acid by immediately connecting it as anode in a separate electrolytic bath consisting of water or a dilute aqueous solution. A detergent or wetting agent may be added to aid mechanically dissolution of the incrusted sulphate. Small amounts of doubly electrolysed copper are cathodically deposited, e.g. on similar copper or platinum anodes.
Patent GB-505674-A (GB)
Title: Improvements relating to electricity measuring apparatus
IPC: G08C13/02
Filed: 1937-12-03
Abstract: 505,674. Counting-apparatus. CHAMBERLAIN & HOOKHAM, Ltd., and JAMES, S. Dec. 3, 1937, No. 33469. [Class 106 (i)] An apparatus for summing the movements of a plurality of energy meters comprises a counter, a rotary selector switch associated with the counter, a plurality of branch circuits, each branch circuit consisting of a pair of pilot leads, a contact arm actuated by a corresponding meter for establishing a circuit through one end of each of the leads alternately, another contact arm establishing the circuit through the other end of the leads alternately, and electromagnetic means in the circuit for actuating the second arm. In the form shown in Fig. 1 each meter a has an arm b oscillated between two limit positions by a cam or other means actuated by the meter. The arm b co-operates with contacts c in pivot leads d provided with other contacts e that co-operate with a contact arm f. The arms b are directly connected to a source of current g and the arms f are connected by leads h to the contacts m of a rotary switch i the armature of which is connected to the source of current through an electromagnet j which actuates a counter. The arm b is of light construction and moves slowly between its limits while the arm f is moved quickly by means associated with an electromagnet k. The counter may form part of, or be combined with, a maximum demand indicator. The electromagnet k may form part of a repeater mechanism to serve as a check on the counter. In a modified form the electromagnets k can be arranged in the branch or pilot leads d and a repeater magnet may be placed in the leads h. In another modification where it is desired to register the difference between energy consumed in two systems a, a<1> the arrangement shown in Fig. 3 is provided. Each system is associated with a selector switch i, i<1> actuated synchronously. Between the switch arm n and the counter actuating electromagnet j is a switch arm p controlled by an arm t while the switch arm n<1> is connected to the winding s of a double electromagnet r, s, the windings controlling the arm t through an epicyclic gear (not shown) to move the arm is a positive or negative direction. In the position shown impulses through the system a will be added in the counter while an impulse through the system a<1> will rotate the arm t counterclockwise to throw over the switch arm p. Other negative impulses move the arm still further away while positive impulses through the winding r will return arm t to the position shown. Instead of the two-way switch p a multi-point switch as shown in Fig. 4 may be provided.
Patent GB-393499-A (GB)
Title: Improvements in clasps for stocking and like suspenders
IPC: A41F11/02
Filed: 1932-11-26
Abstract: 393,499. Fastenings. MADDER, A. E., 158, Ladbroke Grove, N. Kensington, London. Nov. 26, 1932, No. 33471. [Class 44.] A suspender grip comprises a frame a against which a stocking h is clamped by a toggle joint e, f. The member f is formed with an extension f<1> which serves as an operating lever and secures the joint in a straightened position. In one form side pieces h, Fig. 3, snap over member e. Alternatively the member f is made narrow enough to be contained within member e and is held in positions by a sliding sleeve l, Fig. 6.
Patent GB-356031-A (GB)
Title: Improvements in or relating to the tensioning of saw blades
IPC: B23D51/12
Filed: 1930-11-07
Abstract: 356,031. Tensioning sawblades. WICKSTEED & CO. (1920), Ltd., C. and WICKSTEED, R., Stamford Road Works, Kettering. Nov. 7, 1930, No. 33488. [Class 145 (ii).] In order to provide a standard initial tension for hack - saw blades, a spring C and housing B are arranged beneath the nut A, which is turned by hand until the housing comes in contact with the frame D, thus putting an initial tension on the saw blade determined by the resistance of the spring. Exact tensioning is then obtained by a dehnite rotation of the nut beyond this point. An indicating arm working over a dial fixed to the frame may be added.
Patent GB-521071-A (GB)
Title: Improvements in water closets and the like
IPC: E03D11/14
Filed: 1938-11-17
Abstract: 521,071. Sanitary closets and bowls. GROENIGER, W. C. Nov. 17, 1938, No. 33493. Convention date, Nov. 17, 1937. [Class 26] A water-closet or other sanitary bowl is supported on the floor by a wall-structure including a transverse wall 15, and is provided at the front with a discharge siphon 29, 30 connected to a horizontal and rearwardly-directed outflow passage 33 which terminates above the floor level and below the lowest point of the bowl within the space enclosed by the walls, means being provided which co-operate with the transverse wall 15 for securing to the end of the passage 33 a connecting pipe 41 leading to the soil-pipe. The connecting pipe may in the form shown extend rearwardly, in Fig. 1, laterally as in Fig. 2, or downwardly through the floor. The pipe 41 is secured by a yoke 43 bolted to the transverse wall 15 and compressing a packing 42. Apertures 37 in the side walls, which may be closed by covers 38, allow access to the pipe connection, and also allow the pipe 41 to extend -laterally through one of them, as in Fig. 3.
Patent GB-1080227-A (GB)
Title: Automatic cross-winding machine
IPC: B65H54/553
Filed: 1964-08-17
Abstract: An automatic cross-winding machine has a take-up-spool changing arrangement and a device which senses whether the spool is rotating and which prevents the actuation of the changing arrangement until the spool is at least approximately stationary. The sensing device may comprise a Wheatstone bridge arrangement, one resistance of which is cooled by the air currents induced by the rotation of the spool, a lever arrangement, one lever of which is pivoted by the rotation of the spool or an electric generator, comprising a roll rotated by the spool.  When the spool stops the sensing device closes a circuit to initiate the changing of the spool.  The winding machine as described is otherwise the same as that of Specification 1,077,736, the sensing device closing the circuit which starts the cam shaft rotating.