baber/WOPTO huggingface dataset:
Patent GB-1217244-A (GB)
Title: Polymer compositions
Inventor: THORPE DONALD HOWARD
IPC: C08L67/06
Filed: 1968-01-11
Abstract: 1,217,244. Halogen- or phosphorus-containing polyester graft copolymers. HOOKER CHEMICAL CORP. 11 Jan., 1968, No. 1719/68. Headings C3G, C3P and C3R. A graft copolymer of (1) from 20% to 95% by weight of the total weight of components (1) and (2), of a polymerizable compound containing aliphatic carbon-to-carbon unsaturation; and (2) a halogen- or phosphorus-containing polyester derived from a polycarboxylic compound and a polyhydric alcohol or phenol, the polyester comprising a maximum of 5 molar per cent of polycarboxylic and/or polyhydric component that contain aliphatic carbon-tocarbon unsaturation. "Polycarboxylic compound" means polycarboxylic acid, anhydride, acid halid or ester and "halogen" means fluorine, dilorine or bromine. In the examples polyesters are prepared from ethylene glycol, chlorendic acid, tetrachlorophthalic anhydride, tetrabromophthalic anhydride, tetrahydrophthalic anhydride, hexachlorooctahydro - 5,8- methano - 2,3 - naphthalene dicarboxylic anhydride, fumaric acid, maleic anhydride, 1,4- butanediol, diethylene glycol, monoalkyl-ether of trimethylol propane, neopentyl glycol, propylene glycol, acetic acid, trimethyl phosphite, triethyl phosphite, tributyl phosphite, bis(# - chloroethyl) phosphite, bis(chloropropyl) phosphite and ethylene chlorophosphite. The resulting polyesters are graft copolymerized with styrene, acrylonitrile, α methyl styrene, methyl methacrylate and methacrylonitrile in the presence of water, dioctylsulphosuccinate, diammonium phosphate and calcium chloride (giving bicalcium phosphate), benzoyl peroxide and hydrochloric acid. The copolymers are compounded with antimony broxide and stabilizers. Graft copolymers of polybutadiene, styrene and acrylonitrile are prepared and these or a butadieneacrylonitrile copolymer are blended with the polyester copolymers and antimony broxide, a liquid bisphenol - epichlorohydric epoxy resin, the reaction product of biphenyl phosphite, pentaerythritol and bisphenol A, polyethylene wax, dibutyl tin carboxylate, zinc sulphide and dibutyl peroxide. Polymer compositions are also prepared by emulsion and suspension polymerization of styrene, α-methyl styrene, acrylonitrile and methacrylonitrile on to mixtures of polyesters and polybutadiene or styrene-butadiene copolymer in the presence of water, dioctyl sodium sulphosuccinate, diammonium phosphate, ammonia, calcium chloride, benzoyl peroxide, dodecyl mercaptan, di-butyl p-cresol, polyvinyl alcohol and potassium persulphate.
Patent GB-251907-A (GB)
Title: Improvements in or relating to tubular gas or vapour burners
IPC: F23D14/10
Filed: 1926-01-21
Abstract: 251,907. Keith & Blackman Co., Ltd., J., (Baker, Perkins, Co., Inc.). Jan. 21, 1926. Perforated-tube and like multiplejet burners. - An atmospheric gas or vapour burner, particularly for use in baking-ovens and the like, comprises a tube 25 having a longitudinal slot 44 containing two parallel check-bars 45 separated by a spacing-bar 50, around which a wire 49 is wound helically to form the burner outlets 52. The bars 45, 50 are secured together by rivets 51 or the like and rest on bolts 42, fingers 46 being provided to retain the bars in the slot 44. An inner tube 34 having a flat perforated upper side 41, as described in Specification 13836/15, is secured by rivets 38 in an opening in a plate 37 secured by bolts 39<1> between flanged collars 39, 40 into which the tube 25 and a valvecontrolled supply pipe 26 are screwed respectively. The ends of the slot 44 are covered by plates 47. In a modification, the check-bars 45 are separated by two spacing-bars 50, between which a central bar is provided. The burners may be supported between the front and rear walls of the oven, an observation-door being provided adjacent each burner. In a second form, as shown in Fig. 10, the spacing-bar 60 is narrower than the check-bars 57 to form a chamber 61 closed at the ends by plates and at the bottom by a perforated plate 59 secured to the check-bars 57, the inner tube 34 being dispensed with. The plate 59, may be replaced by a plate secured between the lower edges of the checkbars, which are provided with apertures between the plate and the spacing-bar. Specification 22762/14 also is referred to.
Patent GB-809717-A (GB)
Title: Production of olefine polymers
IPC: C08F2/00
Filed: 1957-01-17
Abstract: In a process for the polymerization of olefins using as catalysts mixtures of hydrocarbon compounds, halogenated or not, of metals of Groups 2b or 3b of the Mendeleeff Periodic Table and halogen-containing compounds of metals of Groups 4a, 5a or 6a, a compound capable of forming with the catalyst components a complex compound in an amount of 0.1 to 0.9 mol. per equivalent of metal of the metal hydrocarbon compound.  Specified olefins are ethylene, propylene, isobutylene and mixtures thereof.  Specified Groups 2b and 3b compounds are a mixture of monohalogen aluminium dialkyl and dihalogen aluminium monoalkyl, aluminium triethyl and aluminium tripropyl.  Specified Groups 4a to 6a compounds are titanium tetrachloride or tetrabromide, titanium trichloride, the corresponding chlorides of zirconium, vanadium pentafluoride, vanadium tetrachloride, chromium trichloride, vanadium oxytrichloride and chromyl chloride.  Specified complex forming compounds are diethyl, dipropyl, di-isopropyl, dibutyl and diamyl ethers, anisol, phenyl ethyl ether, 1.4-dioxane, acetonitrile, propionitrile, ethanol, propanols, butanols, pentanols, isoamyl alcohol, ethyl hexyl alcohol, glycerine, trimethylolpropane, phenol, cresols, acetals, e.g. propionaldehyde dimethylacetal, dimethylamine, trimethylamine, isoamylamine, piperidine, quinoline, tetraethylammonium iodide, or mixtures of these compounds.  The polymerization may take place in such diluents as hexane octane, petroleum ether, gasoline, gasoline fractions, cyclohexane, methyl cyclohexane, methyl cyclopentane, benzene, toluene and xylene.
Patent GB-305132-A (GB)
Title: Improvements in or relating to the manufacture of fertilisers
IPC: C05B7/00
Filed: 1929-01-18
Abstract: 305,132. Soc. L'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des Procedes G. Claude, and Urbain, E. Jau. 31, 1928, [Convention date]. Double salts; phosphates.-A mixture of potassium and ammonium chlorides, obtained for instance by the process described in Specification 210,399, is treated at temperatures up to 260‹ C. with phosphoric acid in such proportion that for each atom of the total alkali contents of the mixture, there is present at least about two atoms of phosphorus, and the product is then treated, at about 150‹ C., with ammonia until at least one third of the hydrogen of the phosphoric acid used has been replaced. By this means a double or mixed phosphate of potassium and ammonium, which forms a valuable fertilizer, is formed, and by controlling the amount of water present the final product is obtained in the form of non-hygroscopic crystals. This product may be further treated! at about 50‹ C. with ammonia to replace a second hydrogen atom from the phosphoric acid, or the treatment with ammonia be effected in dilute solution to give such product in solution in one step, the solid product being thence obtained by crystallization. Hydrochloric acid produced in the first stage of the process may be used to convert tincalcium phosphate into bicalcium phosphate.
Patent GB-809959-A (GB)
Title: Method and apparatus for facilitating the starting of looms without a weak pick
IPC: F16D3/52
Filed: 1956-01-19
Abstract: 809,959. Looms. HOLDING LUXEMBOURGEOISE METAPIC, S. A. Jan. 19, 1956 [Nov. 29, 1955], No. 1843/56. Class 142(2) [Also in Group XXXII] A flywheel is coupled to the drive shaft of a loom so that the flywheel is movable angularly relatively to the shaft to enable the flywheel to overrun and drive the shaft at the starting of the loom. In one form, Fig. 8, the flywheel 1 is connected to the driving shaft 2 by springs 3, 4, and the flywheel is formed with a central opening 5 having opposed recesses 6, 7 which receive projections 8, 9 diametrically disposed on the shaft 1. In a modification, Figs. 9 and 11, a light plate 11 is keyed to the shaft 2 and is provided with a hub 12 and circumferentially spaced pins 13; a similar circumferentially arranged series of pins 15 is provided upon the flywheel 1, and an endless belt 16 bears on all the pins 13, 15. A cover plate 17 may be provided to retain the belt in position.
Patent GB-563362-A (GB)
Title: Improvements in or relating to metal rectifiers
IPC: H01L25/07
Filed: 1943-02-04
Abstract: 563,362. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd., and SEARLE, A. M. Feb. 4, 1943, No. 1858. [Class 37] A rectifier disc 1 has at least one notch 2 into which an assembly rod may be slipped so that the discs may be tightened. A second, shallower, notch may be provided to rest against a second rod or the second notch may be of equal depth. The method of assembly enables intermediate elements of a pile to be removed, if necessary, without disturbing the other elements. In another example, the deeper notch extends to the centre of the disc.
Patent GB-910248-A (GB)
Title: Method of laminating sheets
IPC: B32B27/00
Filed: 1961-01-17
Abstract: 910,248. Printing surfaces. DITTO Inc. Jan. 17, 1961 [Feb. 8, 1960], No. 1881/61. Class 100 (2). [Also in Groups VIII and XX] A lithographic master sheet is produced from a sheet 28, bearing printed or like characters in material such as printing ink which is absorptive of infra-red radiation, by heat-bonding the sheet, by means of an interlayer of thermoplastic material such as polythene, to a film 25, e.g. of cellulose acetate, the exposed surface of which is rendered hydrophilic as by treatment with alcoholic caustic soda, contacting the treated surface with an oleophylic transfer sheet 32 coated with normally solid greasereceptive material 33, and exposing the assembly to uniform heating produced by irradiating it while supported, transfer sheet down, on a glass or other transparent platen 10, to a traversing I.R. source 20. Heat absorbed by the printed characters on the sheet 28 softens exactly corresponding areas of the material 33, and the softened parts are transferred to the film 25 to produce thereon a planographic printing surface. The irradiation source may be used to bond a moisture protective film coated with thermoplastic material to the back of a paper or other sheet prepared as a master sheet for lithographic duplicating.
Patent GB-563485-A (GB)
Title: Improvements relating to maintenance of atmosphere in furnaces
IPC: C21D1/76
Filed: 1943-02-04
Abstract: 563,485. Maintaining furnace atmospheres. RICHARDSON, P. S., and WILDBARFIELD ELECTRIC FURNACES, Ltd. Feb. 4, 1943, No. 1893. [Class 51 (ii)] In heat treatment furnaces having means for maintaining the furnace atmosphere when the furnace door is open, such as by providing a sill at the furnace entrance through which a controlled supply of gas is provided to form a curtain, the output of the plant supplying the furnace atmosphere is also controlled. As shown in Fig. 1, the plant 1 producing the atmosphere, such as a charcoal burner, is supplied with compressed air by a pipe 2 and the sill 4 of the furnace is supplied with atmosphere from the plant 1 by a pipe 3. Valves 7, 7<1> in the gas supply pipe 3 and air pipe 2 are controlled simultaneously by means such as a lever or other device 6. A small steady flow of gas is maintained by providing the valves with adjustable stops to prevent the valves being closed completely. Stop valves 8, 9 are provided in the pipes 2, 3 for shutting off when the furnace is not in use. In a modification the valves 7, 7<1> are provided with byepass pipes and may be shut down completely when the furnace door is shut, a small steady flow of gas being maintained through the byepass pipes. The atmosphere producing plant may be associated with a number of furnaces.
Patent GB-620554-A (GB)
Title: Improvements in or relating to liquid rotary pumps
IPC: F04C15/00
Filed: 1947-01-22
Abstract: 620,554. Rotary pumps. BORG-WARNER CORPORATION. Jan. 22, 1947. No. 2008. Convention date, Nov. 23, 1945. [Class 110(ii)] The pumping chamber of a rotary pump is lined with wear resistant liners 19, 22, in two parts, liquid under pressure acting on the back face 17a of a radial flange 18. As applied to a gear pump, Fig. 1 a housing 10, in two parts, preferably of light-weight material such as aluminium alloy, contains liner pacts 19, 22, preferably of bronze, pressed axially by delivery liquid acting on the face 17a. Sealing rings 19c are provided. A passage 25 allows delivery fluid to pass to the face 17a. In Fig. 4, liquid under delivery pressure in a conduit 114 is admitted to the. face 117a by way of a valve 125a; if the pump is reversed the valve 125a is closed and liquid passes from the new delivery conduit 113 by way of a valve 126a. Pressure-relieving means on the face 120 of the flange 118 comprises an annular channel 141, inwards of the teeth roots, leading to a zone of low pressure by way of passages 142, 143 and one of ball valves 144a, 145a, depending on the direction of rotation of the pump gear 115. The size of the channel 141 is obtained by trial and error to secure the correct pressure difference on the sides of the flange 118.
Patent GB-1478741-A (GB)
Title: Method of preparing mixtures comprising one or more thermoplatic polymers or elastomers
IPC: B29C48/92
Filed: 1975-01-17
Abstract: 1478741 Controlling mixing apparatus KABELUND METAL-WERKE GUTEHOFFNUNGSHUTTE AG 17 Jan 1975 [30 Jan 1974] 2111/75 Heading B1C [Also in Division G3] To obtain a mixture of thermoplastic polymers or elastomers of desired uniformity, the duration of a mixing operation is determined by the total mixing energy absorbed by the constituents during the mixing operation. In a preferred embodiment, the current taken by a mixer motor is used as an indication of the absorbed mixing energy but mixer shaft torque or hydraulic or pneumatic means may be alternatively employed. As shown the motor current is tapped by a transformer 1, converted at 2 to d.c., and a correction is made at 3 and 4 for the prevailing no-load current, so that the frequency of the output pulses of voltage/frequency converted 5 is proportional to the operative motor current. The pulses are counted at 6 and when a predetermined value is reached the mixture is ejected from the mixer. The mixing operations are controlled by a programme card 10, unit 12 correcting for variations in the quality of the constituents and unit 13 correcting (e.g. by altering ram pressure or mixer speed) for variations of mixture temperature, as measured by sensor 15, outside a predetermined range.
Patent GB-548045-A (GB)
Title: Improvements in or relating to reduction gearing for aircraft propellers
IPC: B64C11/30
Filed: 1941-02-17
Abstract: 548,045. Toothed gearing. BRISTOL AEROPLANE CO., Ltd., MANSELL, S. W., and HOLLOWAY, W. P. Feb. 17, 1941, No. 2174. [Class 80 (i)] [Also in Group XXXIII] The coaxial shafts 22. 23 of counter-running airscrews are connected to bevel wheels 28, 33 meshing with pinions 36 on fixed radial axes, the gears 28, 33, 36 acting both as reversing and reduction gears, and each pinion 36 is connected to a bevel wheel 38 meshing with a single bevel wheel 39 splined to the engine shaft 11. As shown the wheels 38 and 39 are of the same diameter but they may be of different diameters to form another step in the reducing,gear. The whole of the gearing including the wheel 39 is carried by a spider having six radiating arms secured at their ends to a cylindrical extension 10 of the engine crank case, the hub 12 of the spider carrying a roller bearing 19 for the outer shaft 16 which is additionally supported by a thrust bearing 20 carried by a further extension 21 bolted to the extension 10. The inner shaft 23 is supported by a thrust bearing 24 and by a roller bearing 25 engaging within the hub of the rear airscrew. The pinions 36 are mounted on three of the radiating arms of the spider and their bearings are fed with oil through holes 52, 51 and a groove 51, cut in the hub 12, to. which oil is supplied through one of the other radiating arms of the spider. Each of the bevel wheels 28, 33 is connected to its hub by splines 27, 32 and rests on a spherical seating 29, 34 so that the load on the teeth of the three pinions is equalized. The bevel wheel 39 is mounted on a spherical seat 42 rotatably mounted on the hub 31 of the gear wheel 33 and is connected by splines 40 to a hub 41 on the shaft 11. For actuating a variable pitch screw a tube 69 is mounted as shown in the shaft 23 so as to enclose a space 71 at the rear end. Oil is admitted to the space 71 and, through ducts 72, to the interior of the tube through a passage 68 in the shaft 23 and hub 31 from one of two annular spaces 66 in a stationary ring 65. The other space 66 communicates through a passage 67 with the space 73 outside the pipe 69. Oil is supplied to either space 66 through one or other of two ducts 61, 62 passages 59, 60, 67 the ducts 58 registering with two passages 55 in the wall of the extension 10 to effect opposite movements of a control piston, not shown. The passages 67 and 60 are formed in a plug 56 inserted in one of the arms of the spider. Specifications 514,438 and 519,562, [both in Group XXXIII], relating to pitch change mechanism are referred to in the Provisional Specification.
Patent GB-410717-A (GB)
Title: Improvements in or relating to moulding of plastic material
IPC: C04B24/00
Filed: 1934-01-22
Abstract: Articles such as artificial fruits or toys, moulded from plastic material, are hardened with formaldehyde liberated from a surface in contact with the material, such surface being in shape the obverse of the article to be moulded.  A mould negative may be formed from gypsum which has been stirred in a 5-8 per cent solution of formaldehyde and the material then cast in this mould.  The material may comprise one thousand parts of glue or size, one thousand parts of oil varnish or lacquer, five parts of wood tar and two hundred parts of asphalte or mineral substances for colouring or filling.  It may be poured into the mould hot and when the layer in contact with the mould has hardened under the action of formaldehyde evaporated or otherwise liberated from the mould, the still-liquid material inside this layer may be poured off.  Successive layers are built up in this way to give a desired thickness.  The article may then be filled with a sealing filling such as paraffin to prevent contraction during drying.  After drying the filling may be removed, or it may be a permanent filling such as of marble cement.  Before filling, a protective layer of bonedust, sand or other nonhygroscopic material may be applied to the interior of the moulded article.  The plastic material may alternatively be cast in an ordinary mould and, after removal therefrom as a rubber-like mass, coated with gypsum p impregnated with formaldehyde and left until hardened.  The article is then heated up to the melting point of the plastic material and unset material poured off from the interior.
Patent GB-326611-A (GB)
Title: Key-locked fastenings for attache cases, trunks, bags and the like
IPC: E05B65/50
Filed: 1929-01-23
Abstract: 326,611. Cheney, C. W. Jan. 23, 1929. Hasp locks; lock mechanism, slider-type.-In an attache case and like hasp lock designed to be of minimum thickness a thin bolt d slidable between the front plate a and dished back plate c of the lock casing has an aperture in which is disposed a transversely-slidable key-operated locking member e, the edge portion e<2> of which, engaged by the key bit, is upturned to provide the necessary thickness. The lock shown is of the kind having a hollow slidable key-hole nozzle g carried by the bolt, into which the upturned portion e<2> projects, as does the key pin d<2> carried by the bolt. With the slider e in the position shown in Fig. 6, the lower end of the slider is housed in a recess in the bolt aperture, a notch in the slider engaging a fixed projection c<3> carried by the back plate of the casing. The bolt is thus locked in its shot position. When the slider is moved upwards by the key, it moves clear of the recess and projection c<3>, its upper end resting against and in front of a projection c<2> carried by the back plate, and about which the slider can rock to allow retraction of the bolt. A doublelimbed spring f bearing against the slider urges the bolt to shot position. The end d<3> of the bolt is inclined transversely, and the cross-bar l<4> of the staple l carried by the hasp j and with which the bolt engages is of the inclined and bevelled form shown, Fig. 3, to engage the end of the bolt and press it towards retracted position as the staple is being pressed into the aperture a<2> of the lock. Specification 325,667 is referred to.
Patent GB-192399-A (GB)
Title: Improvements in and relating to devices for permanently adjusting the tension of bicycle chains
IPC: B62M9/16
Filed: 1923-01-25
Abstract: 192,399. Depas, H. Jan. 25, 1922, [Convention date]. Driving-chains, adjusting; wheels, facilitating detachment of.-In a device for adjusting the tension of bicycle chains, in which the wheel axle is displaced in an horizontal or inclined slot of usual form in the fork end, the axle and the tensioning-member, such as an eccentric, screw, or rack and pinion, are mounted in a slotted stopmember engaging a stop on the frame; the slotted stop-member together with the axle and tensioning-member are moved forwards to enable the chain to be disengaged from the sprocketwheel and are then removed from the fork slot without altering the adjustment of the tensioning-member in the slotted stop-member. In cases where the ratio of transmission is varied by changing the diameter of the rear sprocket, the stop-member is independently adjustable relatively to the frame stop, (e.g, by means of a series of stop-teeth on the stop-member or frame stop or both), to an extent corresponding to the variation in the diameters of the sprockets, without altering the adjustment of the tensioning- member. In the construction shown in Figs. 1 and 2, the axle 3 carries a freely-mounted sleeve 8 slidably engaging an horizontal slot 7 in a stopplate 6 having one or more notches 14 engaging a stop 5 on the frame. The sleeve 8 and axle 3 are adjusted along the slot 7 and the fork slot 2 by means of a cam 11 engaging a stud 12 on the plate 6, the parts being then locked by means uf a nut 13. In order to remove the wheel, the outer nuts 4 are loosened, and the plate 6 is rotated to disengage the notch 14 from the stop 5, when the axle &c. can be moved forwards and then backwards to disengage the chain; the process is reversed when the wheel is replaced, no alteration of the adjustment of the locked cant 11 taking place during the removal. In the construction shown in Fig. 12, the stop-member consists of two plates 50. 51 slidable relatively to one another by means of pin-and-slot connections 58, 59, each having a pawl 14 to engage the frame stop 5, so that the wheel can be turned round to change from a sprocket on one side to a differently-sized sprocket on the other side, the pawls 14 being displaced equally from the axle by a pinion 56 having an operating-lever 57 and engaging racks 54, 55 on the plates 50, 51 respectively. The change in the diameter of the sprocket is allowed for by forming the stop 5 with several teeth spaced to correspond to the change. Other forms involving changes of detail are described.