baber/WOPTO huggingface dataset:
Patent GB-1025570-A (GB)
Title: Process for the preparation of phosphines
IPC: C07F9/6568
Filed: 1963-07-29
Abstract: Phosphines (including ones with phosphorus in a ring) are prepared by reacting a phosphoro compound <FORM:1025570/C2/1> where R1, R2 and R3 each represents alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl or aralkyl optionally substituted by alkoxy or amino, R2 and R3 may also represent -OQ, where Q is hydrogen, alkyl, aryl or a salt-forming atom or group, and either R2 or R3 may represent with R1 a saturated or unsaturated tetracarbon bridge which may be hydrocarbyl-substituted, at elevated temperature with an organic or inorganic, monomeric or polymeric silane having at least one hydrogen atom bound to silicon, or with a silicon tetrahalide together with hydrogen in the presence of a metal or metal complex hydrogenation catalyst. Specified catalysts are Na, K, Ca, Mg, Al, Zn, Cu, Pd and cobaltcarbonyls. Temperatures of 100-300 DEG  C. are preferred.  An inert solvent may be used.  Pressures up to 200 atm. are mentioned. An inert gas may be present.  In examples: triphenyl phosphine is prepared from triphenyl phosphine oxide; tri-o-tolyl phosphine from tri-o-tolyl phosphine oxide; 1-phenyl-3-methyl phospholine from 1-oxo-1- phenyl-3-methyl phospholine; tri-o-anisyl phosphine from tri - o - anisyl phosphine oxide; dibutyl phosphine from methyl dibutylphosphinate; diphenyl phosphine from methyl diphenylphosphinate; 3,4-dimethyl phospholine from 1-oxo-1-hydroxy - 3,4 - dimethyl phospholine; butylphosphine from n-butyl phosphonic acid or diethyl butylphosphonate.  1 - Phenyl - 1 - methyl phospholinium iodide is prepared from 1-phenyl-3-methyl phospholine and methyl iodide (Example 6).  Dibutyl phenylcarbamoylphosphine, diphenyl phenylcarbamoylphosphine, 3,4 - dimethyl - 1 - phenylcarbamoylphospholine and bis-(phenylcarbamoyl) butyl phosphine are prepared by the action of phenyl isocyanate on dibutylphosphine, diphenyl phosphine, 3,4-dimethylphospholine and butylphosphine respectively (Examples 8-12).
Patent GB-159048-A (GB)
Title: An improved trivet or like device for use at the front of a coal or gas fire
IPC: A47J37/06
Filed: 1919-12-02
Abstract: 159,048. Grice, T. Dec. 2, 1919. Trivets. - A trivet is adapted to be used for toasting bread and warming plates, and comprises a wire frame a having hooks b, for attachment to the grate bars, and carrying a sliding metal plate c and hinged members d. These members, when in the position shown, support a slice of bread to be toasted, and when not required may be swung down underneath the slide. Hinged pieces e are also provided, the upper end of one member engaging with the upper end of the other to form a rest, between which and the edge of the slide a plate may be supported for warming.
Patent GB-804029-A (GB)
Title: Copolymers of vinyl acetate and fumarate
IPC: C10M145/16
Filed: 1956-10-03
Abstract: Lubricating and fuel oil additives are prepared by copolymerizing to molecular weights of 8,000 to 35,000, 1 to 2 mols. of vinyl acetate with 1 mol. of a dialkyl fumarate mixture of average molecular weight 360 to 425 and consisting of di-isopropyl fumarate and a dialkyl fumarate having 10 to 22 carbon atoms in each alkyl group (described in Group IV (a)).  The additives may be incorporated in paraffinic and naphthenic lubricating oils, greases containing metal soaps, paraffin wax and waxy compositions, diesel fuels, domestic heating oils, mineral seal oil and refined kerosene, optionally together with dyes, antioxidants, e.g. phenyl-a -naphthylamine, pour point depressors, e.g. wax-naphthalene and wax-phenol condensation products, viscosity index improvers, e.g. polybutene, polylauryl methacrylate, polyvinyl ethers and polyvinyl esters, and detergents, e.g. barium tert.-octyl phenol sulphide.ALSO:Oil-soluble copolymers of molecular weight 8000 to 35,000 are prepared by copolymerizing 1 to 2 mols. of vinyl acetate with 1 mol. of a dialkyl fumarate mixture of average molecular weight 360 to 425 and consisting of di-isopropyl fumarate and a dialkyl fumarate having 10 to 22 carbon atoms in each alkyl group.  The fumaric esters may be derived from straight-chain saturated primary alcohols, e.g. decyl, dodecyl, tetradecyl, cetyl, stearyl, arachidyl and behenyl alcohols and mixtures obtained by the hydrogenation of coconut oil and tallow.  Polymerization may be effected in a solvent or diluent, e.g. white oil, n-heptane, petroleum ether, naphtha and kerosene, in the presence of catalysts, e.g. benzoyl peroxide, acetyl peroxide, t-butyl hydroperoxide and t-butyl perbenzoate, under reflux or at superatmospheric pressure, preferably in an inert atmosphere, e.g. of nitrogen or carbon dioxide.  The vinyl acetate, catalyst and diluent may be added as the reaction proceeds and the molecular weight of the product controlled by short-stopping with a phenolic antioxidant or reduced by homogenization.  The copolymers may be added to lubricating oils, diesel fuels, domestic heating oils, mineral seal oils and kerosene, optionally together with dyes, antioxidants, e.g. phenyl a -naphthylamine, pour point depressers, e.g. wax-naphthalene and wax-phenol condensation products, viscosity index improvers, e.g. polybutene, polylauryl methacrylate, polyvinyl ethers and polyvinyl esters, and detergents, e.g. barium tert. octyl phenol sulphide.
Patent GB-1431769-A (GB)
Title: Securing elements
IPC: E05B17/20
Filed: 1972-06-27
Abstract: 1431769 Screws BANHAMS PATENT LOCKS Ltd 4 June 1973 [27 June 1972] 30132/72 Heading F2H [Also in Division E2] A woodscrew or screwbolt 2 has an axial bore 8 in which is retained a blocking member 12 urged outwardly by a spring 10.
Patent GB-1027348-A (GB)
Title: Improvements in rotational casting apparatus
IPC: B29C41/06
Filed: 1963-07-31
Abstract: 1,027,348. Rotational casting apparatus. McNEIL CORPORATION. July 31, 1963 [Aug. 23, 1962], No. 30344/63. Heading B5A. A rotational casting apparatus comprises a plurality of mould-carrying arms 120 extending radially of a rotatable turret, each of the arms including inner and outer rotatable shafts 128, 136 carrying drums 130, 135 respectively, these drums being adapted to be driven by a plurality of resilient drive means, and one of the drive means being located so as frictionally to engage one of the drums and the turret. Mould carriers 12 are attached to a cross-shaft 141 rotatably journalled within a block 140 mounted on the outer end of each shaft 128. The shaft 136 carries a mitre gear 143 which meshes with a gear 142 on the shaft 141. Thus rotation of the outer shaft 143 causes rotation of the moulds on a transverse axis, and rotation of the inner shaft causes the block 140 to rotate on the major axis. The moulds pass through a stripping and loading station A, a curing station B and a cooling station C. As shown, the resilient drive means for the drums 130, 135 comprises pneumatic tyres 52, 82, 86, 112, 116, but a resilient solid tyre may be used. At station A (Fig. 3, not shown), only one drive (52) is provided which engages the drum 130 for rotation of the moulds about the major axis. The curing station (Fig. 4, not shown) has two tyres 86, 82 which engage with the drums 130, 135 respectively to produce major and minor axis rotation. At station C (Fig. 5, not shown) there are two tyres 112, 116, the one which engages the drum 130 being positioned so as to be engageable with the under surface 121a of the turret to cause rotation of the turret when a turret index and lock mechanism 160 (Fig. 6, not shown) is released. This mechanism co-operates with notches 152 in the plate 121 to maintain the turret and arms 120 in their operative positions.
Patent GB-1512805-A (GB)
Title: Corona wind generating device
IPC: B03C3/70
Filed: 1975-07-21
Abstract: 1512805 Electrostatic precipitation ENVIROTECH CORP 21 July 1975 30428/75 Heading B2J [Also in Division H1] A device 47 for generating a corona wind, e.g. in an electrostatic precipitator Fig. 1 (not shown), comprises an electrically conductive rod 31; an electrically conductive shell 49 surrounding the rod 31 and having at one end an open mouth M through which the rod 31 passes and which is relatively large compared with the diameter of the rod 31; and  a plurality of pointed members 55 fastened circumferentially around the rod 31 to extend outwardly therefrom towards the shell 49 and generally towards the mouth M.  An embodiment, Fig. I (not shown) shows the device 47 integral with a rod 31 providing a support and an electrical connection to emitter wires 19 and located below a conventional vibrator 28, the entire assembly being supported on a tubular insulator 37 of e.g. porcelain or fused silica or alumina. The device 47, as best seen in Fig. 3, has a shell 49 which is approximately spherical and is open at both ends; the electrodes are thin plates 51, 52, 53, of three different sizes, each with points 52 of approximately constant radial distance from the shell 49. It is described as producing an air flow as shown by the arrows in Fig. 3.
Patent GB-1514484-A (GB)
Title: Fasteners
IPC: F16B21/07
Filed: 1975-07-09
Abstract: 1514484 Window stay securing device ELTA PLASTICS Ltd 9 July 1975 [10 July 1974] 30503/74 Headings E2A and E2B A securing device e.g. for window stays, cabinet door, &c. comprises a hollow housing 23, Fig. 3 with an aperture 38 at one end, latch members 44 within the housing having shoulders 48 to engage an abutment 24 on a bar 12 inserted through aperture 38 and a keyhole 52 for insertion of a key 56 between the latch members to enable them to be spread apart and disengaged from abutment 24. An apertured window stay (18, Fig. 1, not shown) may be located over the post 12 which is secured to a window frame (10) before attachment of the securing device. In an alternative embodiment (Fig. 5, not shown), the post may be secured to the frame of a cabinet and, on closing the door, passes through a slot (60) therein, the securing device then being latched into position.
Patent GB-226552-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T15/40
Filed: 1924-12-18
Abstract: 226,552. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Westinghouse Bremsen Ges.). Dec. 19, 1923, [Convention date]. Fluid-pressure; force-transmitting mechanism. -Relates to automatic or straight-acting pressure brake systems wherein an auxiliary brake cylinder is utilized to take up the slack in the brake rigging, and the braking pressure is established by the main brake cylinder. According to the invention, in such systems embodying a pair of brake levers connected by a. tie rod the pistons of the auxiliary and main brake cylinders are respectively connected to the brake lever 5 at points relatively near to and distant from the tie rod. Provision may also be made for varying the time taken for a brake application, and for limiting the brake pressure on an unloaded vehicle. In the form shown in Figs. 1 and 2 fluid is supplied from the triple valve chamber 12 through a wide passage 13 and pipe 10 to the auxiliary cylinder 2, and through a restricted port 14 and pipe 9 to the main cylinder 1, whereby the piston rod 4 first becomes effective, and when the brake blocks engage the wheels, the hollow piston rod 6 is engaged with the toothed rod 3 by the known clutch device 7 and applies pressure to the brake blocks with only a small stroke of the main piston. If the triple valve is such that, on initiating a brake application, the train pipe is vented into the brake cylinder, the auxiliary cylinder 2 will also function as an accelerating-valve. In a modification, the auxiliary cylinder is supplied as before with fluid from the triple valve and the main cylinder is supplied from the auxiliary cylinder through a cock having three passages of different cross-section, so that the rate of charging the main cylinder may be varied to suit the length and speed of the train. A similar cock may be inserted in the pipe 9, Fig. 1, in which case the restricted port 14, Fig. 2, must be dispensed with. In the form shown in Fig. 5, provision is made for limiting the braking pressure on an unloaded vehicle. A cock 22 is positioned as shown to effect braking on a loaded vehicle, sp that fluid passes direct from the pipe 20 to the pipe 21 and the cylinder 2 and thence through the three-way cock 19 above described and pipe 18 to the main cylinder. When the vehicle is unloaded, the cock 22 is so turned that fluid from the pipe 20 passes through a pressure-regulating valve 23 and a pipe 24 connected to a chamber 25 before passing to the cylinders. The valve 23 limits the pressure in the cylinders 2, 1 and the chamber 25 increases their capacity and so further limits the braking pressure in partial brake applications. The valve 23 may be replaced by a pressure-limiting valve in the chamber 25. The cock 2 is positioned from the side of the vehicle.
Patent GB-740518-A (GB)
Title: Heat exchanger and method and apparatus for making the same
IPC: F28F1/12
Filed: 1953-11-04
Abstract: 740,518. Making heat exchangers. AKTIE-BOLAGET SVENSKA MASKINVERKEN. Nov. 4, 1953 [Nov. 10, 1952], No. 30517/53. Classes 83 (2) and 83 (4). [Also in Group XIII] Electric welding; soldering; bending.-A method of making a heat exchanger comprising a base wall provided with surface extending elements in the shape of pins or wires is characterized in that the elements are simultaneously welded or soldered groupwise with two or more elements in each group in such a manner that all elements within each group are contiguous to one another at the base wall to which they are secured in a common solid joint which is independent of the joints between the other groups and the base wall. Lengths of wire stock 19 carried on reels 10 are fed by driven rollers 11 through a guide 12 and thence to a chuck 13 in which the wires are held. The chuck is moved laterally and the lengths of wires 2 held in the chuck are sheared from the stock. The chuck engages with a ram 14 which advances towards the clamped heatexchanger tube 1 and the wires 2 are forced against the tube and resistance welded as disclosed in Specification 673,721. The chuck may be cooled by fluid circulated therethrough to prevent adhesion of the wires to the chuck. The ram carries a tapered fluted mandrel 15 which engages the group of wires already welded to the tube and bends them to diverge as shown in Fig. 1. Alternatively, the mandrel may be omitted and the wires bent intermediate their ends as in Fig. 2 by rotating the tube 1 until the wires engage a fixed bar. After welding, and preferably when the chuck is being reloaded, the tube 1 is fed axially a distance equal to the distance between the mandrel and the chuck in readiness for the next welding operation. When a row of wire groups have been welded the tube is rotated the required amount to enable the next row to be welded. The groups of wires may be welded to a plane metal sheet if desired. In a modification precut wires 26, Fig. 9, contained in a hopper 25, are intermittently advanced in groups into the chuck 29, 30 by a feeding device 27 and guide 28 in timed relationship with the reciprocation of the chuck. Alternatively, the wire may be soldered by providing the wires or the base wall with a coating of tin or solder and heating the wire groups when pressing them against the base wall and finally cooling the wires or wall to form the joint. Specification 675,604 also is referred to.
Patent GB-757471-A (GB)
Title: Improvements in or relating to axial flow compressors
IPC: F04D29/32
Filed: 1954-10-22
Abstract: 757,471. Axial-flow compressors; jetpropulsion engines. SZYDLOWSKI, J. Oct. 22, 1954 [Oct. 23, 1953; Aug. 5, 1954], No. 30528/54. Classes 110(1) and 110(3) In an axial-flow impeller for a compressor, particularly a compressor forming part of an aircraft jet-propulsion or gas turbine engine and operating at transonic and supersonic speeds, the camber line of the blades is curved in opposite directions at the tip and at the root end. Fig. 3 shows the cross-section of the compressor blades 3 at their root ends, the centre of curvature of the camber line of each blade being located with respect to the blade in the direction F of impeller rotation. At the mid-length of the blade, the curvature is in the same direction, but the radius of curvature is greater. Further towards the blade tip, the camber line is straight, while at the tip the curvature is in the opposite direction to that at the root end. In a modification, the curvature at mid-length is already opposite to that' at the root end. In the jet-propulsion engine shown in Fig. 6, the impeller of the low-pressure compressor 11 is constructed as described above, and supplies air both to a highpressure compressor 13 and to a by-pass duct 12. Compressor 13 supplies air to the combustion chamber 14 of a gas turbine 15. Specification 693,227 is referred to.
Patent GB-1102532-A (GB)
Title: Preparation of azo compounds
Inventor: NIELD CYRIL H
IPC: C07C255/27
Filed: 1965-03-25
Abstract: Compounds of the general formula <FORM:1102532/C2/1> wherein R is a hydrocarbon or alkoxyhydrocarbon group and R1 is C1- 6 alkyl, or R and R1 together form a cyclic group, and X is a nitrile, an alkali or alkaline earth carboxylate group or a carboxylic ester group, are prepared by oxidizing a compound of the general formula <FORM:1102532/C2/2> with an aqueous hypohalite solution at a temperature of at least 20 DEG  C.
Patent GB-501621-A (GB)
Title: Improvements in and relating to the control of electrically driven reciprocating machines
IPC: B23Q15/007
Filed: 1937-11-08
Abstract: 501,621. Control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 8, 1937, No. 30613. Convention date, Nov. 10, 1936. [Class 38 (iii)] Continuous reversal.-In a system for controlling a reciprocating machine driven by a reversible electric motor M and comprising a pair of relay operated switches F, Fs, B, Bs which are operated alternately to connect the motor for different directions of rotation these switches are each provided with a holding circuit adapted to be completed through a different one of a pair of mechanically separate drum switches St1, St2 biassed to their off positions. Motion of the machine in one direction causes one of a pair of adjustably spaced cams 1 or 2 to engage a lever arm 11 or 21 attached to the appropriate drum switch St1 or St2 and turn this switch through stepped positions in the first of which a reduction of the motor speed is effected and in the second of which the holding circuit for the relay F8 or Be of the closed relay operated switch F or B is broken and the energizing circuit for the relay Be or Fa of the other relay operated switch is closed to effect closure of this switch and reversal of the motor. A holding circuit for this closed relay operated switch is made through the other drum switch which is then similarly operated by the other cam 2 or 1 on reverse movement of the machine to reduce the motor speed and subsequently again reverse the motor. An emergency switch is operated to stop the motor if either of the switch drums is moved to a third position. The cams 1, 2 may be adjusted to lie so close together that the respective lever arms 1<1>, 21 are always in contact with them and the drum switches are never allowed to return to their off positions whereby a short reciprocating motion of the machine may be obtained with the motor running at its reduced speed in alternate directions.
Patent GB-249222-A (GB)
Title: Illuminated sign for lighting shop windows
IPC: G09F13/00
Filed: 1924-12-20
Abstract: 249,222. Reeves, W. G. Dec. 20, 1924. Lantern doors and door fittings.-In an advertising sign adapted also for illuminating a shop window, show-case, &c., the casing a has a sign plate b at the front and a pivoted shutter d at the back, the shutter having side wings f which retain the shutter in its set position by frictional engagement with the ends of the casing.
Patent GB-726309-A (GB)
Title: Improvements in heavy calibre training ammunition
IPC: F42B8/10
Filed: 1953-11-06
Abstract: 726,309. Practice ammunition. FRANSSON, F. W. Nov. 6, 1953 [Dec. 13, 1952], No. 30743/53. Drawings to Specification. Class 9(1).  The ammunition described is the same as that described in Specification 707,368 but the claims differ. Specification 707,367 also is referred to.
Patent GB-618033-A (GB)
Title: Improvements in screw fasteners
IPC: F16B5/02
Filed: 1946-10-16
Abstract: 618,033. Rivets. GUEST, KEEN, & NETTLEFOLDS, Ltd., and BRISTOW, J. W. Oct. 16, 1946. No. 30750. [Class 89 (i)] Tubular rivets for use when access can only be had to one side of the work, are provided initially with flanges at both ends. The inner flange has a conical periphery 13 and a number of slots 16 that permit the head to be contracted to pass through the work as shown in Fig. 3. After insertion the rivet is expanded by a screw 22 with a head bearing through a washer 25 on an upstanding lip 20 formed on the outer flange. Continued tightening of the screw deforms the rivet axially at 17, Fig. 5, causing the plates to be tightly held. If thinner plates are to be connected additional washers may be used on the . underside of the outer flange. Sealing compound may be applied to the flange and/or washers at the outer side.
Patent GB-875288-A (GB)
Title: Skate and skid fenders for life boats
IPC: B63B23/36
Filed: 1957-10-01
Abstract: 875,288. Boat launching skid fenders. HICKSON, W. F. Oct. 1, 1957, No. 30758/57. Class 115. A skid and skate B for a lifeboat A comprising a flexible metal strap 14 with inwardly extending spaced blocks 15 mounted at intervals along the length thereof has engagements D and C at the ends of the strap to the keel and gunwale respectively. The engagement C is adjustable to vary the length of the strap and comprises a swinging clamp with a cam plate 73 to be engaged under the gunwale 13. The engagement D comprises a stud or clamp attachment to the keel 12.
Patent GB-1120881-A (GB)
Title: Improvements in or relating to welding plastics
Inventor: TOMSON ERIC
IPC: B29C65/08
Filed: 1966-07-08
Abstract: 1,120,881. Seaming non-metallic sheet material. OMEGA LABORATORIES Ltd. 1 March, 1967 [8 July, 1966], No. 30816/66. Heading B5K. A welding head for an ultrasonic seam welding machine comprises two oo-operating members 1, 2, one of whioh is a probe and the other an anvil, the member 2 including a body 3, a main tip element 4 projecting from the body 3 towards the member 1 and the subsidiary tip elements 5, 6 projecting from the body 3 one on each side of the element 4 which stands just proud of the elements 5, 6. The member 2 may be the anvil, as shown, or the probe. Plastics sheets to be welded travel between the members 1, 2 in the direction of the arrow 8. Preferably, the element 4 stands proud of the elements 5, 6 by about the thickness of one of the plastics sheets to be welded. The tip elements may be any desired shape, e.g. square, elliptical, rectangular or circular, in trarsverse cross-section and may be rounded off at their upper extremities.
Patent GB-1270979-A (GB)
Title: Method of manufacturing photosensitive elements for use in electrophotography
IPC: G03G5/14
Filed: 1969-06-19
Abstract: 1,270,979. Electrophotographic element. KATSURAGAWA DENKI K.K. 19 June, 1969 [27 June, 1968], No. 30986/69. Heading H1K. [Also in Division C7] An electrophotographic element is made by vapour depositing on to a substrate a first photoconductive material of low dark resistance to form a first layer, concurrently vapour depositing upon the first layer the first material and a second photoconductive material having a plurality of charge trap levels to form a second layer and vapour depositing upon the second layer the second material to form a third layer. In a vacuum chamber are located two boats one containing Se 20% Te and the other Se. The alloy is evaporated first on to an electrically conductive substrate heated at 60 C. When the deposited layer is 25 Á thick, Se is also evaporated on to the substrate but after a while the source of alloy vapour is gradually shut off and only Se is evaporated. A layer of polycarbonate is provided on the Se surface. Other combinations of materials are CdS+ZnS or CdSe+Se. The layers may be formed in the reverse order.