baber/WOPTO huggingface dataset:
Patent GB-1056193-A (GB)
Title: The production of thiocarboxylic acid esters
IPC: C07C/
Filed: 1965-01-22
Abstract: A thiocarboxylic acid ester is obtained by reacting an alcohol with a halocarboxylic acid, reacting the resulting ester of the halocarboxylic acid with an inorganic di- or polysulphide to form an organic ester di- or polysulphide and reducing the organic ester di- or polysulphide to form a thiocarboxylic acid ester. The esterification of the alcohol may be effected at a reflux temperature of 80-155 DEG  C. for a period of 45-90 minutes by adding 1 mol of a halocarboxylic acid, the halogen preferably being chlorine or bromine, and 1 to 1.2 mol of alcohol to 0.005 to 0.05 mols of esterification catalyst, for example an acid such as hydrochloric, sulphuric or p-toluenesulphonic, or a base such as sodium or potassium hydroxide.  A hydrocarbon solvent, for example toluene, xylene, heptane or cyclohexane may also be present. The organic ester polysulphide may be prepared by reacting the haloester prepared above with at least the equivalent amount of an inorganic di- or polysulphide, for example an alkali metal di- or polysulphide such as sodium or potassium di-, tri- or tetra-sulphides or an ammonium polysulphide, which is preferably dissolved in an aqueous medium, and the mixture heated to 20-100 DEG  C. for 30-180 minutes. The organic polysulphide may be reduced to form the thiocarboxylic acid ester with nascent hydrogen, for example gaseous hydrogen in the presence of a hydrogenation catalyst such as Raney Nickel in a bomb or nascent hydrogen generated in situ by the reaction of an active metal, such as zinc, with an aqueous acid, such as hydrochloric, at a temperature between 10-100 DEG  C. for 60-180 minutes.  An example is given for the production of isooctyl thioglycollate.
Patent GB-769607-A (GB)
Title: Improvements relating to grinding machines
Inventor: GUBBINS CHARLES HENRY
IPC: B24D13/20
Filed: 1955-02-01
Abstract: 769,607. Polishing mops. WOLF ELECTRIC TOOLS, Ltd. Jan. 30, 1956 [Feb. 1, 1955], No. 2981/55 Class 60 A polishing mop comprises a pair of side plates 2, 3 apertured for receiving the threaded end portion of the spindle 7 of a grinding machine and a shrouding 8, 10 extending from each of the plates for ensuring that the threaded portion of the spindle is completely covered when the mop is in position. The shrouding 8 may be made by a pressing operation and have a hole 14 to provide clearance for the spindle 7 while the shrouding 10 may consist of a length of metallic or non-metallic tubing and be secured to the mop by a bayonet fastening. Alternatively, both shroudings may be secured by rivets or nails 4 which are bent over at 13.
Patent GB-452399-A (GB)
Title: Improvements in or relating to devices for blowing granular particles on to surfaces
IPC: F16N15/00
Filed: 1936-01-31
Abstract: 452,399. Powder blowers. DIXON CRUCIBLE CO., J., 167, Wayne Street, Jersey City, New Jersey, U.S.A.-(Assignees of Shonnard, O. D.) Jan. 31, 1936, No. 2998. Convention date, Feb. 4, 1935. [Class 18] A powder blower comprises a container 10 having resilient walls of rubber or thin metal, a screw stopper 17, preferably of rubber, and a discharge tube 16 which can be rotated so as to control the amount of powder passing into an inlet aperture 30 near the lower end of the tube. The aperture 30 opens into a semi-cvlindrical recess 33 in the stopper 17 and the tube 16 is pressed by a spring 34 into a groove in the recess, the lower end of the tube being closed by a washer on the top of a plug 26. An external flange 18 to the stopper ensures that the latter makes a tight joint with the container. A pad 43 for applying the powder to a surface comprises a piece of felt or leather on a plug which is held in a recess in the bottom of the container by a flange 46 engaging a groove in the plug.
Patent GB-1299064-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing sintered metal articles
Inventor: JACKSON WILLIAM BARRY
IPC: B22F3/105
Filed: 1970-01-21
Abstract: 1299064 Powder metallurgy ELECTRICITY COUNCIL 19 April 1971 [21 Jan 1970] 3010/70 Heading C7D [Also in Division H5] A method of making a sintered metal article comprises passing the "green" article through a radio frequency electric field at a frequency greater than 50 kHz to heat the article inductively. As shown the articles 11 are passed vertically through a solenoid 10. "Green" articles 12 are fed in at the top of the pile and the finished articles 13 are removed from the bottom of the pile. Alternatively the articles may be conveyed in a horizontal plane past conductors lying in a plane parallel to and above or below the conveyer, the conductor having portions extending to and fro across the width of the conveyer so as to produce a flux through which the articles pass on the conveyer.
Patent GB-640315-A (GB)
Title: Improvements in or relating to steering gears for mechanically propelled vehicles
IPC: B62D3/04
Filed: 1948-02-02
Abstract: 640,315. Vehicle steering mechanism. BISHOP, R., and JOHNSTON, R. H. Feb. 2, 1948, No. 3055. [Class 80(i)] A steering gear, as for an agricultural tractor, comprises a screw and nut mechanism, driving two oppositelyoscillating aligned rotor shafts each controlling a road wheel through independent drop arms and links. As shown in Fig. 6, the helical thread of a steering wheel shaft 18 engages a nut 16 having parallel bores 27 by which it is mounted on guide rods (not shown) for non-rotative axial movement. Each side of the nut 16 has a slot 30 engaged by the roller 31 of a pin 29 secured in a rocker arm 11 on a rocker shaft 7, or alternatively the pins 29 may be secured to each side of the nut 16 and their rollers 31 engage a slot in each rocker arm 11. This latter arrangement increases the reduction ratio of the gearing, given a constant pitch steering shaft thread, as the rocker arms 11 move outwardly from their mid-position, as opposed to decreasing the reduction ratio in the arrangement shown. Each rocker shaft 7 is mounted in sleeves 8 in an extension 9 of a coverplate 10 of a steering box 6 and has splined thereto a drop arm 5 mountted in a bearing 13 and connected through a link 4, Fig. 3, a steering arm 2 and a stub axle 3 to the road wheel 1. The nut 16, if long, may have the central portion of its thread removed, or, in the case of the steering shaft thread having a varying pitch, may comprise a sleeve with a pin or roller acting as a follower.
Patent GB-750461-A (GB)
Title: Improvements in or relating to coating compositions containing chlorinated rubber
IPC: C09D115/02
Filed: 1954-02-02
Abstract: A protective coating composition is made by forming a clear solution containing chlorinated rubber, an aromatic hydrocarbon solvent and a resin derived from maleic anhydride, a polyhydric alcohol and rosin, and adding an aliphatic hydrocarbon diluent to the solution until finely divided particles containing chlorinated rubber are precipitated.  Specified aromatic solvents are benzene, toleuene, xylene, and "Solvesso (R.T.M.) 100" and specified aliphatic diluents are gasoline, heptane, hexane, mineral spirits and VM and P naphtha. When the composition contains a high concentration of chlorinated rubber a plasticizer is preferably included, e.g. diamyl phthalate, dibutyl phthalate, dibutyl sebacate, dioctyl phthalate, chlorinated biphenyl, tributyl phosphate, triphenyl phosphate or chlorinated paraffin. Driers, e.g. resinates, naphthenates or linoleates, stabilizers, e.g. epichlorohydrin, bisphenolepichlorohydrin resins and polyglycidol resins, and pigments may also be added.  In the examples in which the resin is added in the form of an alkyd varnish made by heating a maleic anhydride modified pentaerythritol ester of rosin (see U.S.A. Specification 2,536,090) at 585 DEG  F. with an oil e.g. soyabean, linseed, dehydrated castor, perilla, poppy seed, tung, gall or bodied oils and diluting with mineral spirits (1) to a solution containing chlorinated rubber, linseed oil, mineral spirits, or "Solvesso (R.T.M.) 100" and an alkyd varnish was added mineral spirits to precipitate chlorinated rubber; (2)-(6) to a solution of chlorinated rubber in xylene or "Solvesso 100" was added an alkyd varnish and mineral spirits was added to precipitate chlorinated rubber; (7) and (8) composition similar to those of Examples (2)-(6) were prepared that contained also chlorinated biphenyl or a long oil oxidizing-type alkyd resin.
Patent GB-635706-A (GB)
Title: Improvements in and relating to magnetostriction oscillators
IPC: H03H9/22
Filed: 1947-02-01
Abstract: 635,706. Subaqueous signalling-apparatus. ROUND, H. J., and BUCKINGHAM, J. Feb. 1, 1947, No. 3120. [Class 118 (ii)] [Also in Group XXXIX] A magnetostrictive oscillator as described in Specification 635,704, comprises a laminated rod of nickel or other ferromagnetic material and an enlarged radiating head attached to one end thereof, the ends of the laminations adjacent to the radiating head being bonded together, by silver soldering or other means, for a short distance along their length.
Patent GB-1065908-A (GB)
Title: Improvements in governors for motors
Inventor: MASON FREDERICK PERCIVAL
IPC: H04L13/04
Filed: 1966-01-24
Abstract: 1,65,908. Automatic speed control. CREED & CO. Ltd. Jan.24, 1966, No.3127/66. Heading G3R. Motor 1 drives governor unit 3, comprising centrifugal switch 4 adapted to key oscillator 7 to supply control signals in accordance with deviations of the motor speed from a set value. These signals are applied to a rotatable plate 9 of a capacitive coupling whose fixed plate 10 is associated with motor control unit 12. The latter may use controlled rectifiers in the case of an A. C. motor, or transistors in the case of a D. C. motor. The unit 11 may operate as an amplifier, rectifier, or differentiator. The oscillator may be powered by battery 8 or by rectifying and smoothing the output of an inductive circuit rotating with the governor and co-operating with a stationary magnetic field.
Patent GB-1534308-A (GB)
Title: Continuous rolling mills
IPC: B21B1/18
Filed: 1976-01-27
Abstract: 1534308 Rolling mill drives DEMAG AG 27 Jan 1976 [28 Jan 1975] 03146/76 Heading B3M Some at least of the stands of a continuous rolling mill are provided with change-speed gearing to enable the speed ratio between a main drive shaft 1 and the mill rolls 16, 17 to be varied. A coupling 4 is axially movable to clutch the drive shaft to either of two sleeves 2 or 3 which transmit rotation to the rolls. Thus, the drive passes through either of gear pairs 5, 9 or 6, 8 to provide alternative speed ratios. In an alternative form (Fig. 3, not shown), the main shaft is coupled to either of two auxiliary shafts which are connected to the rolls through a common gear. A further pair of meshing gears may be incorporated in the drive transmission of the rolls to provide a step-up in the speed ratio.
Patent GB-638333-A (GB)
Title: Improvements in or relating to apparatus for measuring the focal length of lenses
IPC: G01M11/02
Filed: 1948-02-03
Abstract: 638,333. Measuring focal lengths of lenses. FREEMAN, H. Feb. 3, 1948, No. 3194. [Class 97 (i)] The apparatus comprises a collimator sending parallel light from a source on to an opaque diaphragm provided with three apertures sending beams to a translucent screen, the dis. placement of the light spots on the screen which results when the lens to be tested is located between the diaphragm and the screen giving a measure of the focal length of the lens. As shown, the diaphragm apertures 15, 16, 17 are so located that light from the aperture 15 falls at the intersection of orthogonal scales a, b on the screen 18 while the light spots c, d from the apertures 17, 16 fall at the zero points of the two scales, which may be calibrated in dioptres. The lens 19, for example a spectacle lens, is inserted in the beam and is adjusted until its optical axis coincides with the beam through the aperture 15 so that the spot on the screen corresponding thereto still falls at the intersection of the scales. The displacement of the spots c or d along the scales then gives a direct measure of the focal length of the lens. If the lens be cylindrical it is oriented until the spots c and d fall on the scales when the displacements of the spots give the powers of the lens in two meridians and the orientation of the lens indicates the direction of its cylinder axes. Embodiments are described in which the axis of the system is vertical and the screen disposed either at the top or bottom of the apparatus and observed in a mirror, and in which a mirror is placed between the lens 19 and the screen and both the axis of the collimator and the plane of the screen are inclined to the horizontal and the screen viewed in an eyepiece. Means for marking the lens may be provided.
Patent GB-547604-A (GB)
Title: Improved window for use in huts
IPC: E06B1/36
Filed: 1941-03-10
Abstract: 547,604. Windows for arched buildings. HASELDINE, C. F. W. March 10, 1941, No. 3211. [Classes 20 (i) and 20 (iii)] The windows of a hut having curved walls conform in curvature to the wall of the structure. The window as shown fills the space between adjacent ribs 11 and purlins 12 and comprises curved side-frame members 14 and a head 15 and sill 16 of rebated section. The mullion 19 and glazing bars 20 form chords to the curved frame members 14. Outwardly-opening casements 21 are hinged to the transom 17. A black-out shutter 22 is slidable in curved guides formed by grooved fillets fixed to the ribs 11.
Patent GB-346881-A (GB)
Title: An improvement in and relating to photographic and the like frames
IPC: A47G1/06
Filed: 1930-01-31
Abstract: 346,881. Photographic and like frames. WHITE, J., 62, Angerstein Road, North End, Portsmouth. Jan. 31, 1930, No. 3283. [Class 11.] In a photographic or like frame, of the type in which the frame is maintained in a slightly rearwardly inclined position by means of a rear support, the latter is constituted by a small cabinet or case, for containing cigarettes, a manicure set, &c., the frame itself forming a hinged side of the cabinet. In the form shown, the frame b is attached by hinges l and a fastener m to the cabinet a, fitted as an automatic - delivery c i g a r - ette cabinet.
Patent GB-853851-A (GB)
Title: Novel process for the production of cyclopentanophenanthrene derivatives
IPC: C07J1/00
Filed: 1957-01-30
Abstract: 17a -Ethinyl-19-nor-testosterone is prepared by eliminating formaldehyde from 17a -ethinyl-D 4-androstene-17b , 19-diol-3-one or a 19-ester thereof by treatment with a strong alkali, particularly a dilute solution of an alkali metal hydroxide in a lower aliphatic alcohol.  In an example 17a -ethinyl-D 4-androstene-17b , 19-diol-3-one or its acetate in methanol or ethanol is mixed with 13 per cent aqueous sodium hydroxide and left for 8 hours at 50 DEG  C., giving 17a -ethinyl-19 nor-testosterone.  Starting material 17a -ethinyl-D 4-androstene-17b , 19-diol-3-one is prepared (a) from D 4-androsten-19-ol-3,17-dione by refluxing with ethyl orthoformate in benzene containing pyridine hydrochloride and ethanol, treating the resulting 3-ethoxy-D 3,5-androstadien - 19 - ol - 17 - one with potassium in tertiary amyl alcohol and with acetylene, and hydrolysing the product with dilute HCl ; (b) from 17a -ethinyl-testosterone by incubation with ground supra-renal glands of bovine or swine and chromatographic separation of 17a -ethinyl-D 4-androstene-17b , 19-diol-3-one from the main product 17a -ethinyl-D 4-androstene-11b , 17b -diol-3-one. Subsequent acylation with acetic anhydride-pyridine yields the corresponding 19-acetate. Specifications 820,779 and 820,780 are referred to.  Reference has been directed by the Comptroller to Specification 748,824.
Patent GB-372298-A (GB)
Title: Improvements in elastic vehicle wheels
IPC: B60B9/10
Filed: 1931-02-03
Abstract: 372,298. Wheels for vehicles. NALINNE V. H., 2, Avenue Geo Bernier, Brussels. Feb 3, 1931, No. 3463. Convention date, Feb. 11 1930. [Class 144 (i).] A spring wheel comprises a floating rim 1 supported at each side by continuous and seg. mental rubber &c. cush ions 3, 6 respectively which are seated in correspondingly-recessed portions 5, 7 of side discs 2 secured to the wheel hub. The seatings 5, 7 may be provided witl apertures 4, 9 for the displacement of the cushioning-material.
Patent GB-216915-A (GB)
Title: Improvements relating to gramophones and like instruments
IPC: G10K13/00
Filed: 1923-02-06
Abstract: 216,915. Harrison, G., (Barberis, A.). Feb. 6, 1923. Driving; cases with internal horns; turntables. - Relates to gramophones or the like wherein the motor is arranged beneath the horn and is connected to the turntable by a shaft passing through the horn, and - consists in detachably .connecting the shaft to the upper end of the motor-spindle. In the construction shown, the connecting-shaft H<1> is flexible, and is secured at the top by a detachable pin P to a short shaft N which turns in ball-bearings and carries the turntable M. At the bottom, the shaft H<1> is connected by a pin P<1> to a short shaft Q, also mounted on ball-bearings and having a square socket fitting on to the end of the motor-spindle E<1>; or the shaft H' may be detachably secured directly to the motor-spindle. In another construction, the connecting-shaft passing through the horn C is rigid, and is screwed on to the end of the motor-spindle. The turntable, the shaft H<1>, and the tone-arm &c. may be removed to allow a wireless telephone receiver to be placed over the horn inlet.
Patent GB-107553-A (GB)
Title: Improvements relating to Steam Valves.
Inventor: LAMPLOUGH FREDERICK
IPC: F16K31/122
Filed: 1916-06-30
Abstract: 107,553. Lamplough, F., Rutherford, A. B., and Copland, R. D. June 30, 1916. Valves actuated by fluid under control of auxiliary pilot valve.-A double-beat valve adapted to be actuated by fluid pressure under the control of an auxiliary valve, itself controlled by governor mechanism such as described in Specification 106,865 has the valve spindle r<1> formed hollow to establish a connexion between the space between the seats and that above the actuating- piston s which is secured to the spindle. The outlet from the space above the piston to the outlet side of the main valve is controlled by a hand-actuated valve w and by a throttle valve x actuated by a piston x<5> acting through lever x<4> and link x<2>. The supply and exhaust of actuating tluid to and from the cylinder x<6> is controlled by a slide valve actuated by the governor mechanism. The main valve spindle is extended downwards and is fitted with a spring-loaded dash-pot piston working in a cylinder formed on the cover-plate r'
Patent GB-1030992-A (GB)
Title: Drilling apparatus for deep oil wells
IPC: E21B15/00
Filed: 1963-01-29
Abstract: 1,030,992. Boring earth, &c. LEE C. MOORE CORPORATION. Jan. 29, 1963 [Feb. 15, 1962], No. 3596/63. Heading E1F.  In well-drilling apparatus comprising a structure 1, 3, 7, a drawworks 11 mounted on top of the structure, and a mast 29 having legs 37 extending upwardly from the structure and legs 36 extending downwardly adjacent the structure, the mast is pivotally mounted at 28 to facilitate erection. The structure is raised from the position shown in Fig. 1 by connecting a sling 40 to extend from the travelling block 31, around a pulley 43 on the member 7 to a position 41 on the mast, and by running the drawworks to haul in the fast line 33. The structure is held in its raised position by strut 52, pins 45 and stops 44. The mast is raised by running the drawworks to haul in more of the fast line, the mast being held in the upright position by pins inserted at 57. The rotary table 16 is supported on the end of the member 7 beneath the mast and the member is surrounded by a floor 58 in the mast. In a modification (Fig. 9, not shown), the sub-structure is raised by a jack, the rotary table is carried directly by the floor 66 in the mast and the legs 37 may extend to the base 1. In the further modification shown in Fig. 10 the structure comprises a box framework 71 and a portal formed by two L-shaped frames 72 which pivot about axes 73. The rotary table 92 is directly supported by the floor 88 in the mast and an engine 77 for the drawworks is mounted on a foundation 78. The structure may be built up from assemblies piled on top of one another.
Patent GB-607465-A (GB)
Title: Improvements in or relating to screening cans for electrical apparatus
IPC: H01J5/12
Filed: 1946-02-05
Abstract: 607,465. Radio-receiving apparatus. KOLSTER-BRANDES, Ltd., and LOCK, C. E. Feb. 5, 1946, No. 3615. [Class 40 (v)] A screening can for a valve or other apparatus comprises an open-ended metal container 1 having attached to the surface thereof a plurality of depending spring clips 3, preferably having outwardly bent legs forming bowed portions which enter and spring into corresponding apertures 7 in a chassis 5. In a modification, Fig. 6 (not shown), the legs of the springs are provided with notches which engage the edges of the apertures in the chassis. The screening may be used to screen a valve in which case a portion of the lower edge of the can is cut-away to clear the valve-holder.
Patent GB-986182-A (GB)
Title: Process for the chlorination of methyl chlorosilanes in the methyl radical
Inventor: MUELLER RICHARD
IPC: C07F7/12
Filed: 1963-01-29
Abstract: Methyl chlorosilanes of the general formula (CH3)nSiCl4-n, where n is 1, 2 or 3, are chlorinated in the methyl radical by carrying out the reaction in the presence of fluorine as radical initiator.  The amount of fluorine is 3-5% by volume of the chlorine, and an inert diluent gel may be present.  The example describes the preparation of (chloromethyl)methyl dichlorosilane, and a mixture of (chloromethyl)dimethyl chlorosilane and (dichloromethyl)dimethyl chlorosilane.
Patent GB-591831-A (GB)
Title: Improvements relating to magnetic separators using permanent magnets
IPC: B03C1/28
Filed: 1945-02-14
Abstract: 591,831. Magnetic separators. ELECTROMAGNETS, Ltd., BOX, W. E., and CLARIDGE, J. T. Feb. 14, 1945, No. 3678. [Class 72] [Also in Group XXXV] In magnetic separators comprising one or more permanent magnets of, e.g. Alnico and separable magnetisable collecting means adapted to be magnetized by contact with said magnets, mechanically actuated means is provided for readily separating said collecting means from said magnets in order to facilitate removal of collected magnetic material. In one form, Fig. 1, plates 8 and' bolts 10 of magnetic material are carried by a non- magnetic U-shaped support 9, and permanent magnet 11 normally rests on said plates. Attached to yoke 11b of the magnet is screw 13 which passes freely through bridge 14 carrying depending rods 14a which pass through holes in the poles 11a of the magnet and rest in recesses in the plates 8. Separation of magnet 11 from plates 8 is effected by rotating the nut 15 to give upward movement to screw 13, which through the reaction of bar 14 and rods 14a forces the magnet out of contact with said plates. In a modification, Figs. 4, 7, a plurality of magnets 20 carried in a non-magnetic casing 21 normally make contact with the upper ends 17 of magnetic bolts attached to a plate 16 of magnetic material. Separation is effected by movement of lever handle 25 from right to left (see Fig. 7), the cam 25a thus forcing plate 16 out of contact with magnets 20. Specifications 429,199, [Group XXIII], and 557,626 are referred to.
Patent GB-365347-A (GB)
Title: Process for the manufacture of respiratory masks
IPC: A62B18/02
Filed: 1931-02-05
Abstract: Respiratory masks are made by placing superposed alternate layers of fabric, for example linen or stockinette, and impermeabilizing material, for example unvulcanized sheet rubber, in a mould and combining them after moulding, as by heating, in the mould to soften and vulcanize the rubber.ALSO:Respiratory masks are made by placing superposed alternate layers of fabric, for example linen or stockinette, and impermeabilizing material, for example unvulcanized sheet rubber, in a mould and combining them after moulding, as by heating in the mould to soften and vulcanize the rubber.