baber/WOPTO huggingface dataset:
Patent GB-577112-A (GB)
Title: Improvements relating to methylation of olefins
IPC: C07C2/86
Filed: 1943-12-13
Abstract: A methyl radical is introduced into an olefin by treating with a methyl halide, e.g. chloride or iodide, in the presence of calcium oxide at elevated temperature.  Olefins specified are 2 - methyl - butene - 1 and -2, 2 - pentene, 2,3 - dimethyl-butene-1 and -2, 2,2,3-trimethyl-butene-3, and mixtures thereof.  The methyl groups can be added adjacent to the double bond.  The preferred temperatures are from 210-240 DEG  C. at pressures of 500-1500 p.s.i.  Peroxides should be removed from the olefins, as by distillation or reaction with sodium, or their formation inhibited by adding anti-oxidants such as hydroquinone, pyrogallol or benzylaminophenol.  Lime of low alumina content prepared by calcining the carbonate, slaking and recalcining to give a product containing a small amount, usually below 10 per cent, of hydroxide is preferred.  The amount used is generally above 150 per cent of the theoretical.  With trimethylethylene and 0.6-1.6 molar proportions of methyl chloride, about 40 per cent of the latter reacts to form triptene and the rest to give hexenes, octenes and higher.  10 and 12 Gram mols. respectively of trimethylethylene and lime are heated to 220-225 DEG C. generating a pressure of 900 p.s.i. 8 Gram mols. of methyl chloride are slowly added, reaction commencing after an induction period to produce 2,2,3-trimethylbutene-3, 2,3-dimethyl-butene-1 and -2, and some octenes, and dimethyl ether.  Methyl chloride and ether may be separated and recycled and the olefins hydrogenated together or separately to give hexanes, heptanes and octanes used for motor fuel.
Patent GB-886738-A (GB)
Title: Improvements in door locks
IPC: E05B41/00
Filed: 1958-07-01
Abstract: 886,738. Keylocks. MERCANTE, A. July 1, 1958 [July 10, 1957], No. 21065/58. Class 44. [Also in Group XVIII] A door lock is provided with a single indicator which is slidable into two or more positions and vice versa by means operable from the inside and which is slidable from the outside from one position to the other positions but not vice versa. The lock, Fig. 1a, has a bolt 1, a safety bolt 2 and an indicator plate 4 which is provided with a ratchet tooth 7, 10 pivoted at 8 and held in position by a spring 9. The lock is controlled by a pawl 11 having two extensions, one extension 12 being adapted to reciprocate the bolt 1 and the plate 4 whilst the other extension for actuating the bolt merely controls movement of the plate 4 in one direction only. In a modification Fig. 3, the lock incorporates a bolt 14 controlled by an internally and externally extending key, a latch 15 and spring loaded safety devices 16, 18 controlled by a pawl 19 and control means 23, 24 respectively. The latch 15 is connected to an indicator plate by a pin 27.
Patent GB-829401-A (GB)
Title: Means for dropping loads from aircraft
IPC: B64D1/10
Filed: 1956-07-09
Abstract: 829,401. Packaging. BLACKBURN & GENERAL AIRCRAFT Ltd., and CLARK, F. M. July 9, 1957 [July 9, 1956], No. 21176/56. Class 94(1). [Also in Group XXXIII] An assembly for dropping from aircraft comprises a plywood or metal base 20 shown in perspective, Fig. 1, and part section, Fig. 3, provided with two plywood battens 21 supporting metals bars 23 co-operating with guide means in the aircraft freight hold. A metal strip 24 runs round and extends above the base and hooks 29 are provided at intervals. The load 25 is enclosed by four hardboard walls 26, 27 engaging the inner face of strip 24, and by hardboard sheets 30, and may be enclosed by a polythene cover 31. Two layers of resin bonded paper honeycomb shock-absorbing material 32, 33 separated by a hardboard sheet 34 are placed on top and enclosed in a polythene cover. A net 28 engaging hooks 29 secures the load, and a net 35 enclosed the shock absorbing layers is tied to net 28. The nets may be replaced by straps.
Patent GB-685332-A (GB)
Title: Improvements in magnetic snap action electrical switches
Inventor: SNELL MAURICE SAXON
IPC: H01H13/06
Filed: 1950-08-29
Abstract: 685,332. Retractive switches; switches, partly electromagnetic. DOWTY EQUIPMENT, Ltd. Aug. 29, 1951 [Aug. 29, 1950], No. 21359/50. Class 38 (v) [Also in Group XXXVI] In a switch having magnetic snap-action, the contact pressure is increased upon the application of an operating force until the magnetic attraction is overcome and the contacts open. Movable contacts 10<SP>1</SP>, 111 are mounted in pairs on blades fixed to a member 6 pivoted at 7 and urged upwards by spring blades 26 connected to the contacts and engaging terminal strips 27. The contact blades are clamped between insulating members 21, 21<SP>1</SP> which carry a U-shaped armature 20 co-operating with cylindrical magnets 18, 19, the upper one, 18, holding the parts in the position shown. Depression of a telescopic plunger 37 rotates the member 6 counter-clockwise, thereby bowing the contact blades between the magnets and the member 6. This causes the armature to rock slightly on magnet 18 to increase the contact pressure. The contacts are held by magnet 19 after they snap over until the blades 26 restore them on release of the plunger 37. The switch body is rendered waterproof by a rubber bellows 35 and a sealing ring 50. The fixed contacts are connected to socket contacts of the type described in Specification 685,150, [Group XXXVI]. The Provisional Specification refers to operation of the switch by the retractable undercarriage of an aircraft.
Patent GB-358595-A (GB)
Title: An improved flangeless stoneware or concrete drain or sewerage pipe
IPC: F16L13/12
Filed: 1930-07-15
Abstract: 358,595. Glazed pipes. FLANGELESS PIPE CO., Ltd., Ascot Chambers, Queen Street, Brisbane, Australia. July 15, 1930, No. 21362. Convention date, July 29, 1929. [Classes 99 (i) and 99 (ii).] In a joint for glazed stoneware &c. pipes 1 of the kind in which adjacent ends of the pipes are formed with shallow channels 3 to receive jointing cement 4, the said channels are left unglazed to enable the jointing cement to adhere firmly thereto. This is effected, in the case of a 4 in. pipe say, by making a longitudinal cut in the end of the pipe, immediately after moulding and while the pipe is still plastic, about <3>/16 in. from the exterior surface and about ¥ in. deep, and also a circumferential cut about <3>/16 in. deep and # in. from the end so as to form a clay band 2, and this band, which is held in position by a thin uncut portion, is not removed until after the glazing operation. The channel may be formed with grooves &c. 6, and it preferably terminates in an undercut portion 5.
Patent GB-1192872-A (GB)
Title: Live Storage System
Inventor: COUGHLIN GERRARD ANTHONY
IPC: B65G1/08
Filed: 1968-05-07
Abstract: 1,192,872. Roller conveyers. RUBERY, OWEN & CO. Ltd. 8 May, 1969 [7 May, 1968], No. 21507/68. Heading B8A. In a live storage system for articles, stop mechanisms 12 provided at intervals along roller track 10 arrest the articles in turn, each stop mechanism being automatically tripped by a succeeding article to allow the arrested article to travel downwardly to a lower stop mechanism or to the lower end of the track. The stop mechanism comprises a pair of levers 13, 14 pivotally connected at 15, each lever being pivotally mounted on brackets 18. The levers are biased downwards, at their adjacent ends, by their weight or by a spring (not shown). Tripping of the mechanism 12 takes place when the succeeding article depresses a skid 17 on the lever 13 and causes a stop 16 on the lever 14 to be lowered clear of the arrested article. To allow all the articles to be released, a series of wedges 20 actuated by a cable 21 may raise the levers 13 to momentarily lower the stops 16. A lever (23), Fig. 5 (not shown), controls the cable 21. Alternatively, means may be provided for releasing the stop mechanisms individually. The system comprises tracks set one above the other, only the lower track being shown.
Patent GB-399956-A (GB)
Title: Improvements in rotary pumps
IPC: F04C2/07
Filed: 1932-07-30
Abstract: 399,956. Rotary pumps. KEITH & BLACKMAN CO., Ltd., J. and KEITH, G., 27, Farringdon Avenue, London. July 30, 1932, No. 21546. [Class 110 (ii).] The pump comprises two or more segmental blocks 4, 5, each pair being connected by a cross-bar 7 whose ends repose in slots 4<1>, 5<1>, in the blocks. A driving shaft 3 is eccentrically positioned relatively to the cylinder 2 and contains the bar in a slot 9. Inlet and outlet ports 16, 17 are provided which lie in a transverse plane other than that containing the bar. The inner edges of the blocks run on a cylindrical sleeve 6 which is also rotated. In a modification the bar has part-spherical ends which run in metal cavities contained in the slots 41, 5<1>. In this case the ports and bar may lie in the same plane. A further arrangement describes a bar having a central slot which embraces a tongue on the shaft end. The ports may be contained in one or other of the pump end covers.
Patent GB-335663-A (GB)
Title: Power units for self-propelled vehicles
IPC: B60K5/02
Filed: 1929-07-13
Abstract: 335,663. Morris Commercial Cars, Ltd., Hamill, W. W., and Edwards, C. K. July 13, 1929. Drawings to Specification. Engine construction independent of cycle; crank chambers.-A multi-cylinder engine has a symmetrical crank case and a symmetrical cylinder block so that with one type of block and crank case an engine can be constructed with controls on either the right or left hand side of the engine. The cylinder block may be integral with the crank case or it may be separate therefrom; the end facings on the crank case have similar bolt holes to receive at either end the timing gear case or the fly wheel and clutch casing. The, bearings for the crank shaft and for the cam shaft are symmetrical.
Patent GB-276978-A (GB)
Title: Improvements in or relating to furnace regulators
IPC: F23N1/02
Filed: 1927-08-17
Abstract: 276,978. Roucka, E. Sept, 1, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Regulating combustion.-The fuel and air supply or draught of a boiler furnace are regulated in accordance with the boiler pressure and maintained in constant ratio by apparatus comprising a diaphragm 2 exposed to steam pressure and adapted to actuate a loaded lever 6 connected by a rod 12 with the valve 11 controlling pressure, fluid to a servo-motor 16 with a piston rod 18. The latter is connected at one end to a compensating spring 10 and to a movable fulcrum 30 of a lever 26 maintained in equilibrium by an adjustable spring loaded hook 28 and by the pressure acting on a bell 24 communicating with the air or waste gas flue controlled by the damper 22. When the piston rod 18 is moved by variation of steam pressure the fulcrum 30 is shifted and the lever 26 actuates a valve 36 of the servo-motor 38 thereby adjusting the damper 22. The other end of the piston rod 18 is connected to the movable fulcrum 42 of the lever 44 maintained in equilibrium at one end by a spring loaded hook and by the pressure difference in a blower 58 driven by a motor 50 at a speed proportional to the travelling grate 52 or pulverized coal feeding mechanism and acting upon a diaphragm 48. Any variation of the steam pressure actuates the servo-motor 56 and thereby varies a regulating device, such as a resistance, for varying the speed of the motor 50. Alternatively the piston rod 18 may vary the position of a friction disc 64 engaging with a uniformly rotating friction disc 62 to vary the speed of the shaft 66 and the supply of fuel, for instance by means of a conveyer. Regulation bv hand may be effected by altering the tension of the springs acting on the levers 26, 44.
Patent GB-1221818-A (GB)
Title: Codimerisation of olefins
Inventor: GREBBELL JOHN
IPC: B01J23/04
Filed: 1968-05-08
Abstract: 1,221,818. Co-dimerization. BRITISH PETROLEUM CO. Ltd. 27 March, 1969 [8 May, 1968], No. 21697/68. Heading C5E. Co-dimers are prepared by reacting (i) a C 2  or higher olefin with (ii) a C 4  or higher olefin in the presence of a catalyst comprising one or more alkali metals deposited on granular alumina. The catalyst may be hydrided before use. Examples describe co-dimerization of propylene with a mixture of iso-butene and nbutenes. There is a disclaimer to Specification 1,142,704.
Patent GB-438715-A (GB)
Title: Improvements in and connected with apparatus for cleaning poultry battery cages and the like
IPC: A01K31/04
Filed: 1935-08-01
Abstract: 438,715. Cleaning poultry cages &c. PROCTOR, A., and PROCTOR, J. A., 14, Tennyson Street, Harle Syke, near Burnley. Aug. 1, 1935, No. 21787. [Class 5 (ii)] To clean the dropping boards of battery poultry cages a truck comprising side frames 1 spaced apart by stay bars 2 and mounted on wheels guided by rails 4 4 is moved between opposed cages 5. The track carries arms 8 which can be moved outwardly in slot guides and are maintained in extended position by engagement with pins mounted on vertical rods 10 actuated by hand levers 12. The free end of each arm 8 is extended downwardly and shaped to form a scraper 14 and a U-shaped frame 16 is attached to lugs 15 on the rear side of each arm. The frame 16 supports a rotary or flat brush 17 and a sawdust container and distributer 18. The container may be supported on rollers 20.
Patent GB-1072496-A (GB)
Title: Improved mud flap for a vehicle
IPC: B62D25/18
Filed: 1965-05-24
Abstract: 1,072,496. Mud flaps. J. A. MIERS, [trading as NEWHAM RUBBER CO.]. May 23, 1966 [May 24, 1965], No. 21813/65. Heading B7J. [Also in Division G5] A mud flap comprises a sheet of flexible, e.g. rubber, material formed with a recess 3 surrounded by a lip 4 which serves to retain a motive-bearing plate 5 of synthetic plastics material. The sheet may be made from two layers 1 and 2 of hard and soft rubber vulcanized together, the layer 1 embedding a sheet of fabric reinforcement.
Patent GB-170645-A (GB)
Title: Improved treatment of wool to prepare it for manufacture
IPC: D01B3/04
Filed: 1920-07-21
Abstract: 170,645. Coghlan, Sir T. A. July 21, 1920. Wool fat, extracting by solvents. Wool is cleaned by first treating it at a temperature of 45‹ C. or below with trichlorethylene, and then removing the residual trichlorethylene by a current of carbon dioxide, which may be bubbled through oil and then used again, or by washing with water at about 45‹ C., the water being subsequently treated for recovery of potash salts. The wool may finally be washed with cold water, dried, and carbonized, as usual, by means of sulphuric acid. Apparatus for treating the wool with trichlorethylene may be used, wherein the wool charged into a cage is placed in a vessel having an hermetic closure and a lift-away or hinged cover, air being first pumped from the vessel, after which trichlorethylene is introduced and heated by steam coils to 45‹ C.; or the wool may be first treated with the solvent that is almost saturated, then with less saturated solvent, and so on, a final treatment with fresh trichlorethylene being given. Apparatus is also described, wherein a series of connected vessels 1 - - 4 are used, each communicating by pipes with a storage tank f, an exhaust tank or still n, and a vacuum pump p. Each vessel can receive fresh wool, be evacuated, and be supplied with fresh trichlorethylene, in any order, whilst trichlorethylene, after acting in one vessel, can be moved to another vessel under the pressure of its own vapour, valves d, b<1> - - b<4> being operated for these purposes. The vacuum pump p also serves for distilling the spent solvent containing dissolved wool grease in the still n through a distillation column r and condenser s into a receiver t, whence the trichlorethylene is raised by a pump u to the storage-tank f. The wool cages run on rails near the vessels 1 - - 4. It is stated that contact with lead and greasy fabric is avoided in the apparatus used. Commercial trichlorethylene of boiling point 90‹ C. may be employed.
Patent GB-219928-A (GB)
Abstract: 219,928. Larsen, F. A. J. Aug. 2, 1923, [Convention date]. Submarine explorations, apparatus for making. -Apparatus for locating bodies and objects under water comprises a pipe, preferably telescopic, rotatably and adjustably mounted on a motorcar or ship and provided at its end with a strong source of light. As shown in Fig. 1, an arm 2 is pivotally mounted on the chassis 1 of a car and is fixed at any angle by means of a pawl engaging a toothed sector 3. On the arm is rotatably and slidably mounted a jib 5, which may be of telescopic conduction, and at the end of which is pivotally mounted' an electric lamp 7 adjustable by means of a rod 9 and a hand-lever 8 The jib is moved along the arm 2 by means of a hand-wheel 6. When not in use, the jib is supported by a bracket 12. When applied to a motor-boat, the apparatus comprises a tube 13, Fig. 4, provided at its lower end with a glass plate or lens 14 and lamps 16, and adapted' to be lowered from the boat by suitable mechanism. If a lens 14 is used an eye-piece is provided at the top of the tube so as to form a telescope.
Patent GB-520528-A (GB)
Title: Improvements in colour photographic developers and colour photographic development processes
IPC: G03C7/413
Filed: 1938-07-25
Abstract: 520,528. Colour photography. KODAK, Ltd., and JELLEY, E. E. July 25, 1938, No. 22047. [Class 98 (ii)] A colour developer contains an aromatic amino developing agent, such as p-dimethylaminoaniline, 2-amino-5-diethylaminotoluene, or p-aminophenol, a colour former, such as a chlorinated phenol, an unsubstituted or substituted naphthol such as 2:4-dichlor-α-naphthol, a dihydroxy naphthol, such as 1: 5-dihydroxynaphthalene, or a pyrazolone, and a primary aliphatic amine, such as ethylendiamine, or ethanolamine, the amine being present in a concentration sufficiently small not to increase the time of penetration of the developer, but sufficiently large to give better colour saturation in the resulting coloured images. One or more silver salt images in two or more emulsion layers on the same side of the support may be processed by the developer, or the bottom layer of a multilayer element may be selectively processed thereby. A formula for a suitable developing composition is given. Specifications 440,032, 440,089, 447,092, 454,622 and 507,841 are referred to.
Patent GB-703339-A (GB)
Title: Improvements in or relating to the spraying of metal surfaces with liquids
IPC: C23G3/00
Filed: 1949-08-26
Abstract: 703,339. Cleaning metals; modifying metallic surfaces. TAYLOR, B. C., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 25, 1950 [Aug. 26, 1949], No. 22231/49. Class 82 (2) An apparatus for spraying metallic articles with liquids, e.g. for cleaning or chemically coating them, comprises a chamber 1 containing a system of sprays 11 which may be connected in turn to any one of a plurality of containers 4 for the liquids, each container having an independent pump 5 associated therewith for forcing liquid from the connected container through the sprays 11, and means being provided for returning the sprayed liquid to the appropriate container. The pumps 5, driven by motors 6, force the respective liquids through delivery valves 8 into a manifold 9 connected to the spray manifold 10, liquid being returned through the conduit 12 and return valves 14 to the tanks 4. Articles are passed into the chamber by means of an overhead conveyer rail 3 through liquidtight doors 2, means may be provided for rotating the articles in the chamber.
Patent GB-585899-A (GB)
Title: Improvements relating to hose-knitting machines
IPC: D04B9/46
Filed: 1944-11-12
Abstract: 585,899. Knitting-machines. BRAY & SONS, Ltd., A., SHORT, T.C., and PAINTER, J. H. Nov. 14, 1944, No. 22418. [Class 74 (ii)] In a circular machine of the twc feed type the stitch cam for the auxiliary box is withdrawn at the correct time to allow mock-fashioning needles to remain at a low enough level not to clear the stitches from the latches Separate spring-returned lifting bars 21, 22, connected for withdrawing the two stitch-cams have, pin-and-slot connections 18, 19, with a lift rod 17 movable about an axis parallel to its own axis, by a high link 26 on the pattern chain 25, to put the bars in an operative position. A reciprocating thrust rod 16 coacts with the lift rod to actuate the lifting bars, which withdraw and return the stitch cams whilst the high link is engaged with the actuating rod.
Patent GB-185621-A (GB)
Title: Improved method of and apparatus for impregnating cotton bales
IPC: D06B3/00
Filed: 1921-08-25
Abstract: 185,621. Wade, H., (International Cotton Protecting Co.). Aug. 25, 1921. Bales, treating.-The superficial impregnation of cotton bales with fireproofing and like solutions is effected by rolling them over both sidewise and endwise in a shallow layer of the liquid. A suitable apparatus comprises an L-shaped tank 5 through which the bales are rolled from a platform 13 to an inclined draining-platform 15. Railings 12 prevent removal of the bale before the whole tank has been traversed. The liquid is supplied from a tank 16 through a floatactuated valve 20. The impregnating-tank is fitted with skids 10 to support the bale and permit circulation of the liquid under it.
Patent GB-1016401-A (GB)
Title: Improvements in or relating to gate valves having sliding plate closure members
IPC: F16K31/52
Filed: 1963-06-06
Abstract: 1,016,401. Valves. GROVE VALVE & REGULATOR CO. June 6, 1963 [June 7, 1962], No. 22646/63. Heading F2V. In a gate valve having a unitary, e.g. cast, body construction, the gate member is coupled to an actuator and movable between end walls containing fluid passages smaller than the gate; one passage being formed directly within one end wall and the other by an annular insert into an opening in the other end wall through which the gate can be inserted into position between the walls. Circular gate member 40 is inserted through opening 22 into position between end walls 14 and 15 of cast valve body 12 and acts in sealing engagement between spring-seated seat rings 50 and 51, operatively retained in position by annular insert 26 fixed to the body by bolts 29 circumferentially spaced alternately with tapped openings (not shown) for fixing to a pipe line. During assembly, the gate member 40 is raised through the opening between the walls 14 and 15 and joined by a coupling pin 45 to a coupling element 43 to which is attached an operating stem 42 carrying a seal block 46 which is subsequently seated within the opening between the walls. In a further embodiment, the circular gate member 70 is inserted in a similar manner and operated by a crank 88 rotated upon an offset shaft 80 which is journalled within a bearing 81 threadedly removable from the casing 62 to permit insertion of the crank-pin 90 into the arm 92 of the member 70 during assembly A guide-pin 94 is screwed into the arm 92 of member 70 through a normally closed valve body opening 99 to keep the arm 92 centred and engaged with the pin 90 and a valve body stop 96 limits movement of the arm 92 to stop at the closed position. Alternatively (Fig. 13) the crank-pin 90a may be retained in position by a plate 106 acting as bearing surface for a washer 109 screwed into the pin 90a, or the retaining plate 106 may be replaced by an internal flange on the arm 92a extending across the crank-pin opening. The spindle 80 is fitted with an indicating pointer 85.