baber/WOPTO huggingface dataset:
Patent GB-706121-A (GB)
Title: Improvements in or relating to the manufacture of high molecular weight copolymers
IPC: C08F240/00
Filed: 1951-05-25
Abstract: Aliphatic mono-olefins of 3 to 8 carbon atoms are copolymerized with a mono-olefinic aromatic compound by a continuous process at temperatures between-160 DEG  and 10 DEG F. in the presence of a Friedel-Crafts catalyst in a number of stages in one of which the ratio of monomers in the feed is greater, and in another stage the ratio is less, than is desired in the final blend.  The preferred aliphatic olefin is isobutylene but propylene, n-butylene and pentenes are also specified.  Styrene is the preferred aromatic compound, others specified being a - and p-methyl styrenes, a -methyl-p-methyl styrene, p - chloro - styrene, dichlorostyrene, p - ethyl styrene, indene and a -vinyl naphthalene.  A diluent, such as methyl chloride, ethane, propane, butane, ethyl chloride, methylene chloride or refined naphtha, is preferably used.  In a 3-stage process, an excess of styrene is added in the second stage and withheld from the first stage, or extra styrene is in effect added in the first stage by withholding isobutylene from that stage and adding the extra isobutylene in the second stage.  To obtain a product containing 58 to 62 per cent. of combined styrene, using a temperature between -140 DEG  and -100 DEG F. and 1 to 10 volumes of methyl chloride diluent per volume of reactants, a copolymer containing 70-80 per cent. styrene is produced in the first stage, 20-40 per cent. in the second stage and 55 to 75 per cent. in the third stage.  Preferably the catalyst additions are adjusted to effect 35 to 45 per cent. conversion in the first stage, up to 70 to 80 per cent. conversion in the second and 28 to 100 per cent. in the third stage.  Specified catalysts are boron fluoride, ether-BF3, aluminium chloride, titanium tetrachloride, aluminium bromide, AlCl3.Al(OC2H5)3, AlCl3.AlCl2.OH, AlBr3. AlBr2OH, AlBr2Cl.AlOCl, AlBr Cl2.AlOBr, TiCl4.AlCl2OH, TiOCl2.TiCl4, AlBr3.Br2.CS2, BF3-isopropyl alcohol, BF3-ethylene and activated BF3 in methyl chloride. The catalyst is preferably dissolved in, for example, methyl or ethyl chloride, carbon bisulphide, butane or methyl chloride-butane mixtures.  Internal or external refrigerants such as ethane, propane, ethylene, methyl chloride and liquid or solid carbon dioxide, may also be used.
Patent GB-791555-A (GB)
Title: A new or improved swivelling coupling
Inventor: STOCK CHARLES SAMUEL ROBERTS
IPC: F16C11/04
Filed: 1955-04-29
Abstract: 791,555. Hinges and pivots. GIRLING, Ltd. April 27, 1956 [April 29, 1955], No. 12400/55. Class 65(2) In a knuckle joint having limited universal movement the hinge pin 14, uniting the fork and tongue members 12, 13, carries two substantially hemispherical bearing pads 22 which are urged into contact with complementary bearing surfaces in the tongue member by the action of a spring 24 upon a split collet 20 which is free to slide axially on the pin. The key 19, which secures the pin against rotation in the fork arms, extends radially to secure the collet and the pads 22 against rotation about the pin. The inner faces of the fork limbs, or the inner end of tongue, may be chamfered to increase the universal movement, and the female spherical bearing surfaces in the tongue member may be provided in a separate bushing 23.
Patent GB-419065-A (GB)
Title: Improvements relating to projection apparatus primarily for advertising
IPC: G03B23/12
Filed: 1933-04-28
Abstract: 419,065. Changing signs. CHAMBERLAIN, R. M., 1, Billett Avenue, Waterlooville, Hampshire. April 28, 1933, No. 12438. [Class 3 (i).] Optical - projection apparatus.-Glass transparencies are removably held in brass &c. frames 12 mounted in rectangular holes in a flexible steel band 10 provided with a row of perforations 11 along each edge for engagement by teeth 5<a> on mutilated uniformly revolving wheels 6. The teeth 5<a> taper off in height toward the mutilation to facilitate re-engagement with the band 10, and the number of teeth is that required to advance the band through the gate by the distance separating each pair of transparencies. The frames 12 have an open side 12<a> for insertion of the transparency, tabs 12b being bent up for retention. The gate comprises two parts 2, 13 hinged together, the band edges running between two tracks 3 on the fixed part 2 and two spring-pressed slides 16 on the part 13. Gaps in the tracks 3 admit the teeth 5<a>, and leaf springs 17<a> press the band edges on to the teeth 5a. The ends of the band 10 may be secured together to make it endless by inserting a frame 12 through two overlapping holes.
Patent GB-645908-A (GB)
Title: Improvements in or relating to spraying nozzles for liquid fuel burners
IPC: F23D11/24
Filed: 1948-05-05
Abstract: 645,908. Liquid-fuel burners. HAWORTH, L. May 5, 1948, No. 12438. [Class 75(i)] [Also in Group 1] A liquid-fuel burner, such as for a gas turbine engine for aircraft, giving an idling fuel spray and a main fuel supply comprises a body portion 10, 11; with a central chamber 17 receiving the idling fuel and with annularly disposed chamber means 18 receiving the main fuel; a first plate member 21 fitted at the end of the body 11 has a central swirl chamber 32 into which the idling fuel passes by tangential ducts 35 to discharge therefrom by a convergent conical portion with a discharge aperture 33 this portion being formed by a conical boss on the plate 21; the main fuel from the annularly disposed passages 18 passes to an annular groove 19 and thence by ports 36 in the plate 21 to an annular groove 37 in a second plate member 22 and so by tangential grooves 38 to an annular convergent swirl chamber 39, provided by a conical wall of the second plate, and discharges at the aperture 40. The angle of spray from orifice 40 is greater than that from orifice 33. The assembly is held together by sleeve 23 screwed on body 10 and locked in vernieradjusted position by lugs 25a of a spring ring 25 fitting between castellations 10a and 23a. A sleeve 24 fitted at the front end of body 11 facilitates assembly of the plates 21, 22. Filters 20 are provided comprising cylindrical plugs threaded along their length and formed with open ended recesses 20a at each end, and a series of tapering longitudinal grooves 20b cut on the periphery, the deep ends of the grooves 20b communicating with the recesses 20a at each end alternately. Slight angular adjustment of the spraying nozzle is obtained by attaching the nozzle by tubes 12 and 13 to a fitting 55 having a partly spherical seating 55a. Cooling air is supplied through ports 27, Fig. 2, to an annular space 26 and is directed, through ports 28 and 29, around the sprays. Specification 645,696 is referred to.
Patent GB-677987-A (GB)
Title: An improved means of supporting coats, garments, and like articles of wearing apparel
IPC: A47G25/18
Filed: 1949-06-06
Abstract: 677,987. Coat hangers. ALEXANDER, G. C. June 6, 1949. No. 12452/48. 'Class 52 (v). A garment hanger comprising a centrally supported yoke member 1 and a trouser and skirt supporting bar 2 pivoted to the yoke at one end and supported at the other by a hinged clip 6 has a suspension hook 12 mounted on a bracket 9 pivoted to the yoke 1 the pivot 10 being extended to form a projection from which another garment hanger may be suspended. Sliding members 8 or recesses 14 may be provided on the supporting bar 2 to support loops of other garments. In a modification the bracket 9 may be formed with an integral hook to replace the projection.
Patent GB-213456-A (GB)
Title: Improvements in or relating to feeding troughs
IPC: A01K5/02
Filed: 1923-08-24
Abstract: 213,456. Stockbridge, M. Aug. 24, 1923. Feeding-appliances for animals.-Appliances of the kind having a container a from which food passes into troughs d is fitted with a regulator b that is displaced by the animals to deliver food and' extends down at each side of the division d<1> between the troughs. The regulator is suspended on chains c that are adjustable to vary its height.
Patent GB-606667-A (GB)
Title: Apparatus for heat treating material
IPC: F27B1/00
Filed: 1945-05-18
Abstract: 606,667. Shaft kilns. KENNEDY, J. E. May 18, 1945, No. 12578. [Class 51(ii)] An apparatus for calcining material comprises a vertical shaft closed at the top and arranged with a furnace at the side thereof, means to deliver the material to be calcined at a predetermined rate through the closed top of said shaft, means to feed material from the bottom of the shaft at a rate equal to the rate of delivery into the shaft, means in communication with the furnace positioned intermediate the top and the bottom of the shaft and constituting a calcining zone of the shaft. means to cause the gases of combustion to flow upwardly through the voids in the material while moving through said calcining zone of the shaft, said gases of combustion flowing from said calcining zone through the voids in the material in a zone above and moving toward said calcining zone whereby said material is preheated, and means positioned below the calcining zone which define a soaking zone immediately below said calcining zone and are arranged to allow the flow of a cooling medium through the voids in the material moving through a zone below said soaking zone. Material is fed from a conveyer 58 through a hopper 59 with a reciprocating plunger 62 into an air-tight rotary trap feeder 54 feeding, through an opening 55 in a plate 42 closing the top of the kiln shaft, into a chamber at the top of the shaft. Here spaced pusher bars 70 carried on a sprocket chain 71 deliver the material through openings 69 into the kiln shaft proper. At the very bottom of the kiln shaft two spaced plates 43 and 45 with longitudinal openings 44, 46 respectively have reciprocating between them an ejector bar 47 which delivers the calcined material onto an endless conveyer 24 which carries it away. In the upper central part of the kiln shaft transverse bars C of an inverted V cross-section are mounted, extending from openings 11, in the wall 10 separating the kiln shaft from an upper furnace chamber 31, to the opposite kiln wall 18. In the lower part of the shaft a horizontal' row 'of similar . bars C<1> is mounted. Combustion gases originating from a lower furnace chamber 32 pass through the chamber 31 through the openings 11, along the undersides of the bars C and upward through the material, calcining it in the region of the bars C and preheating it in the region above this calcining zone. The gases pass through the openings 69 and are drawn out through a flue 78 by a fan F either to a stack 79 or back to the combustion chamber through a flue 80. The zone 83 immediately below the calcining zone forms a soaking pit in which calcining is completed, the material passing down over the bars C<1> into a cooling zone 84 and then out through the openings 44, 46. To induce a flow of cooling air in the zone 83 a fan F<1> draws air through a manifold 86 from the underside of the bars C<1>. When the kiln commences to operate the first material is discharged through openings 89 in the walls of the cooling zone. The furnace may be fired by oil, gas, pulverized coal or the like.
Patent GB-1178852-A (GB)
Title: Fire Resistant Glass Fibre-Reinforced Pipes
IPC: F16L9/12
Filed: 1967-03-17
Abstract: 1,178,852. Reinforced plastics pipes. MANCAR-TRUST. 17 March, 1967 [18 March, 1966], No. 12593/67. Heading F2P. A glass fibre-reinforced synthetic plastics pipe 12, having a lining 13 as described in Specification 1,178,851, is enveloped by a sheath comprising one or more layers 10, 11 of material containing inorganic compounds resistant to a temperature exceeding 300‹ C. The sheath may consist of or include magnesia and/or magnesium chloride, antimony oxide, an organic bromo-phosphorous compound, a copolymer of butadiene, acrylonitrile and methacrylic acid or a formaldehyde-condensation resin, and a plasticizer of which the proportion in the inner layers is greater than that in the outer layers. An aluminium foil coated with synthetic rubber may be provided externally of the pipe and between the layers of the sheath, and the latter may be reinforced with glass fibre fabric or matting.
Patent GB-315036-A (GB)
Title: Improvements in or relating to reciprocating hydraulic engines and the like
IPC: F16J15/32
Filed: 1928-04-30
Abstract: 315,036. Braren, L. K. April 30, 1928. Double-acting piston pumps.-In order to avoid binding in a pump for an hydraulic gear the piston-rod 3 passes through a spherical bush 5 at the rear end of the cylinder, and the piston and front stuffing-box are arranged to permit radial movement. The piston body 10 is free to move radially between a collar 12 and a nut 13 on the rod and is packed internally by U-leathers. The rod passes through a bush 16 in the front stuffing- box, which is free to move radially and is packed bv a U-leather 17. The bush makes a flat or spherical joint with a gland 18. The bush 5 is socketed in concave bushes 6, 7 packed by a U-leather 8. Spaces external to the bushes 5, 16 are packed by bushes 25, 26, similar to the bush 16, and communicate with passages 19, 22 which are connected to suction.
Patent GB-432824-A (GB)
Title: Improvements relating to guillotine guards
IPC: F16P3/04
Filed: 1934-04-27
Abstract: 432,824. Machinery guards. TOMSETT, W. H., Cleveland, The Street, Willesborough, Kent. April 27, 1934, No. 12719. [Class 80 (iv)] A knife-holder 1 carries a knife 17 adapted to cut material 18 held by a clamp 20. A link 2 pivoted at its left-hand end to the knife-holder, has an upstanding arm 3 to which are attached springs 4 tending normally to hold the link against a stop 5 on the holder. The other end of the link carries a roller 10 adapted to move in a slot 9 in the main guard 6 which consists of a slotted plate arranged to move vertically in guides 7. An auxiliary guard 12 of the same width as the guard 6 is hinged to the latter at 13 and carries at its bottom corners projecting pins 14 engaging slots 15 in inclined guides 16 which force the guard 12 outwardly as the main guard descends. To prevent movement of the knife until the clamp 20 is in position, a stop bar associated with the clamp-actuating treadle holds the clutch lever against movement. As the knife-holder falls diagonally from left to right, the guard 6 falls vertically, the link 2 moving as a piece rigid with the knife-holder. When the main guard strikes the work, it is arrested, but the knife continues its movement the link 2 then moving relatively to the knifeholder and the roller moving along the slot 9. At the same time, the auxiliary guard is moved outwardly. The lower part of each guard may be of open frame form covered with wire mesh.
Patent GB-322986-A (GB)
Title: Improvements in or relating to filters for air and other gases
IPC: B01D45/08
Filed: 1929-04-24
Abstract: 322,986. Joseph, E. L. April 24, 1929. Dust-collectors.-In a depositing chamber comprising corrugated plates, provision is made for spacing the plates and forming perforations whereby viscous liquid is fed to the surface of the plates. Fig. 3 shows a spacer bar 12 which is grooved at 15 and truncated at 16. The bars 12 and the plates 11 are arranged alternately and clamped together by bolts 13. The upper ends of the bars and the plates form the bottom of a tank with sides 14, which contains the viscous liquid. Specification 222,385 is referred to.
Patent GB-928842-A (GB)
Title: Improvements relating to containers for fluids
Inventor: PARISH WILLIAM REGINALD
IPC: A61J1/00
Filed: 1960-04-11
Abstract: 928,842. Surgical infusion apparatus. ALLEN & HANBURYS Ltd. March 30, 1961 [April 11, 1960], No. 12833/60. Class 81 (2). [Also in Group XVII] A parenteral fluid container made of flexible plastic material has a pierceable closure 4 with a rigid liner 2 fitted inside the container neck 1, the closure being retained in the neck by an apertured cap 7. The liner 2 which is made of rigid plastic, e.g. nylon or propylene, has an out-turned flange 3 which bears against the outer end edge of the container neck. The closure 4 is a plug, membrane or disc of rubber or latex which forms a non-leaking attachment with a needle piercing it and reseals itself on withdrawal of the needle. The closure has a flange 6 which is secured against the liner flange by the cap 7 which is made of metal or other material which is not deformable by heat. The closure has a central spigot 5 which fits in the liner which may include a transverse septum (Fig. 3, not shown). The closure and the cap may have co-operating peripheral skirts (Fig. 2, not shown) which fit around the container neck.
Patent GB-927331-A (GB)
Title: Improvements relating to remotely operable fluid flow control valves
Inventor: TATTERSALL JOHN OWEN
IPC: F16K1/20
Filed: 1961-04-10
Abstract: 927,331. Valves. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 26, 1962 [April 10, 1961], No. 12914/61. Class 135. A valve comprises a flap closure member 16 co-operating with a seating 42 and connected by a hinge arm 23 to a hinge pin 30 on the opposite side of the seating. The flap 16 comprises a closure portion 17 connected to a backing plate 18, the backing plate being provided with a three-start ramp face 20 engageable in the closed position by ramp faces 42 of a rotatable barrel 38, the rotation of which provides a cam-like closing force to the closure member. The barrel 38 is rotated by the outer shaft 43 of two concentric shafts 43, 44. The shaft 43 carries a gear 45 meshing with a gear 46 of a lay-shaft 47, the lower gear 49 of which drives a further lay-shaft (not shown), which rotates the barrel 38 through a gear 41. The inner shaft 44 carries a worm gear 55 which meshes with a quadrant 56 on a shaft 57, spur gears 58, 59 on the shaft 57 and hinge pin 30 complete the gear train to the hinge arm. The flap 16 is loaded by a spring 33 to tilt the flap relative to the arm so that the flap presents a square attitude on approaching the seat. Micro-switches 60, 62 indicate the open and closed position of the valve with respect to movement of the hinge arm, while two microswitches such as 65 indicate the on-off position of the locking means.
Patent GB-637572-A (GB)
Title: Improvements in or relating to apparatus for indicating an operating characteristic of a shaft
IPC: G01L3/10
Filed: 1946-04-30
Abstract: 637,572. Electric systems for indicating torsional deformation and power. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 30, 1946, No. 13030. Convention date, April 30, 1945. [Class 40 (i)] A magnetic device for indicating torsional deformation of a shaft, e.g. the shaft 46 of a sun gear 47, Fig. 2, on which gears 51 rotate, as shaft 48, carrying the gears 51, rotates, comprises a pair of magnetic rings 7, 9, Fig. 3, having a reference ring 17a between them so that air gaps 6, 8 vary, as the shaft 46 deforms, to vary the impedance of coils 33a, 35a which are connected in adjacent arms of a bridge circuit so as to indicate differential variation and measure torsional deformation. The windings 33a, 35a may embrace the rings 7, 9, Figs. 4, 5 (not shown), or may be placed within a circumferential channel in the ring 7, Figs. 7 and 8 (not shown). In Fig. 1 the torsion only of the shaft is measured; two stator windings 33a, 35a cooperate with the three rotors, so that torsion of the shaft varies the air gaps 6, 8 to produce unequal outputs from the windings, and this inequality is eliminated by potentiometer 43 whose position thus indicates the torsion in the shaft. The Specification as open to inspection under Sect. 91 also includes the following subjectmatter : to measure power transmitted by a rotating shaft, two circular magnets 7, 9, Fig. 1 (Cancelled), are secured on and rotate with the shaft through non-magnetic bushings 13; between the rings 7, 9 is a third ring of magnetic material 17 also secured through a non-magnetic bushing 19 to rotate with the shaft; the rings 7, 9 carry fingers 7a, 9a, Fig. 2 (Cancelled), co-operating with fingers 15 on the ring 17, to define air-gaps 6, 8; the magnetic circuit is completed over air-gaps 24, 26, Fig. 1 (Cancelled), to a circumferential stator 23 carrying radial arms 27 embraced by windings 29. Rotation of the shaft causes a voltage to be developed in windings 29 related not only to the speed of rotation but to the torsion developed in the shaft which varies the gaps 6, 8 relatively to each other. The stator 23 may be magnetized instead of the rotor rings 7, 9; the stator may be an electromagnet instead of a permanent magnet. This subject-matter does not appear in the Specification as accepted.
Patent GB-374222-A (GB)
Title: Improvements in tobacco pipe cleaners
IPC: A24F9/06
Filed: 1931-05-04
Abstract: 374,222. Tobacco-pipe c l e a n e r s . JONES, W. M., 1.63, Green Lanes, Wylde Green, Birmingham. May 4, 1931, No. 13054. [Class 130.] A flat metal case has a space 5 for containing cotton-wool and is provided with a U-shaped tubular sheath 4 for housing a pipe cleaner, which is formed of flexible stranded wire and terminates in a closed loop to be threaded with a piece of cottonwool. When the cleaner is housed in the tube, a knob on the end of the cleaner is screwed into a boss 1 on a tube 2 sliding on the sheath 4. On depressing the tube 2 by means of a projecting latch 3, the looped end of the cleaner protrudes through the end 7 of the sheath 4 and can be threaded with cottonwool ; the tube 2 is then pushed upwards and the cleaner can be unscrewed from the boss 1 and withdrawn for use.
Patent GB-1174054-A (GB)
Title: Apparatus for Checking the Correct Operation of Speed Responsive Devices for Engine Fuel Control Systems
Inventor: WARNE EUGENE HAROLD
IPC: F02C9/28
Filed: 1966-03-24
Abstract: 1,174,54. Gas turbine engine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. March 13, 1967 [March 24, 1966], No. 13118/66. Heading F1G. [Also in Division G3] A servo-device 14 regulating a pump 10 supplying fuel to a gas turbine is controlled by a valve 35 responsive to fluid-pressure signals from a pair of devices 17, 21 respectively responsive to the speeds of two independently rotatable concentric shafts, a manually controllable valve means 40, 41 being arranged to modify the effect of the signals upon the valve 35 whereby the operation of the latter can be tested at reduced speed. With the valves 40, 41 in the position shown, the higher of the two signal pressures is selected by a valve 25 and transmitted to a chamber 29 which is closed by a diaphragm 31 for actuating the valve 35. The opposite side of the diaphragm 31 and the opposite sides of a larger diaphragm 32 are subjected to the inlet pressure of the pump 10 through a passage 37 and a loop 38, 39. Rotating the valves 40, 41 through 45 degrees, clockwise or anti-clockwise from the position shown, connects the signals from either the devices 17 or the device 21 to both sides of the diaphragm 31 and to one side of the diaphragm 32 so that operation of the devices can be tested at reduced speed. A valve 30 ensures that the pressures from the devices 17 and 21 acting on the valve 25 are of approximately the same order.
Patent GB-794120-A (GB)
Title: Improvements relating to electric supply systems for portable electric tools
IPC: H01R13/648
Filed: 1955-05-06
Abstract: 794,120. L.V. supply system for portable electric tools; transformer arrangements C. J. R. ELECTRICAL & ELECTRONIC DEVELOPMENT, Ltd., and BANKS, C. H. April 30, 1956 [May 6, 1955], No. 13128/55. Class 38 f4). Low voltage plug-and-socket boxes 6 are fixed adjacent to and are earthed from mains voltage sockets 2. A portable L.V. transformer is connected to the supply through plug 4 and its L.V. secondary output is fed into box 6 through socket 11 and out to a portable tool through socket 14 and plug 17. The latter and plug 4 are of non-interchangeable types. The earth terminal of socket 14 is in metallic continuity with conduit 3, hence any faults in leads 13 and 20, or in the transformer will not raise the electric tool casing 1 to mains potential.