baber/WOPTO huggingface dataset:
Patent GB-467160-A (GB)
Title: Improvement in high viscosity organic esters of cellulose and process of preparing them
IPC: C08B3/16
Filed: 1935-09-05
Abstract: High viscosity cellulose esters having an acyl content predominately acetyl, are prepared by pretreating cellulose in a bath composed mainly of acetic acid, with or without propionic or butyric acid, but no catalyst, and then subjecting the cellulose so pretreated to esterification in a bath in which the solvent for the anhydride is mainly acetic acid and containing as regards its acyl content 5--23 per cent, preferably 10--20 per cent, butyric or propionic acid or anhydride, and as regards its sulphuric acid catalyst content 4--8 per cent at an esterification temperature of 70--95 DEG  F. or with a higher sulphuric acid content up to 20 per cent at a temperature down to about 50 DEG  F.  It is preferred to employ 6--8 per cent sulphuric acid and a temperature of 70--90 DEG  F.  By the use of the propionic or butyric acid &c. and a sufficient quantity of sulphuric acid catalyst, adequate adsorption of the latter is obtained initially to prevent degradation of the cellulose and at the same time gelling of the cellulose ester in the esterification bath is prevented. Provided there is present initially sufficient sulphuric acid to inhibit degradation of the cellulose, the remaining sulphuric acid may be added later, slowly and with agitation.  The esters obtained which contain a certain proportion of propionyl and butyryl groups, are suitable for the manufacture of artificial silk and as the interlayers of laminated glass.  The products have an increased wet strength.  Specification 316,593, [Class 2 (ii)], is referred to.
Patent GB-854480-A (GB)
Title: Improvements relating to containers for liquefied gases
Inventor: CLARK LESLIE JOSEPH
IPC: E04H7/18
Filed: 1958-08-01
Abstract: 854,480. Storing liquefied gases. NORTH THAMES GAS BOARD, and WHESSOE Ltd. July 10, 1959 [Aug. 1, 1958], No. 24863/58. Class 8(2). Prevention of repeated compacting of powdered heat insulation material.in the space 10 between inner and outer shells 2, 1 of a liquefied gas, e.g. methane container is effected by surrounding the inner shell by a layer of compressible and resilient fibrous matting, 11 e.g. glass or cellulose acetate fibres which is compressed between the inner shell 2 and the powdered material upon relative thermal movement of the two shells towards each other without exerting a substantial pressure on the inner shell 2. The latter which is cylindrical is of aluminium with bracing ribs 7 and the resilient layers 11 is secured by bands 15 and by cords 13 to a ring 14 surrounding the cover 9 of the inner shell 2. The outer shell has welded steel side plates covered by reinforced steel plates 5 and resting on a steel base plate 4 covered by heat insulating bricks 9a.
Patent GB-332777-A (GB)
Title: Improvements relating to power driven washing machines
IPC: D06F13/02
Filed: 1929-08-15
Abstract: 332,777. Dunlop, S., (Maytag Co.). Aug. 15, 1929. Guards.-A guard casing 18 for a belt 9 by which the drive is transmitted from a motor 5 to a worm shaft 12 driving a washing machine is loosely and pivotally mounted on the worm shaft and is provided with a jockey roller 23 resting on the belt. The shaft 12 and the belt form the only supports for the guard casing, so that the weight of the latter, augmented by a spring 24, maintains the tension on the belt.
Patent GB-208233-A (GB)
Title: Improvements in taximeters
IPC: G07B13/00
Filed: 1922-09-14
Abstract: 208,233. Waddington Tamperproof Taximeters, Ltd., Waddington, A. S., and Clause, F. H. Sept. 14, 1922. Flag and setting-spindle mechanism.-To prevent an actuation being given to the registering- drums when the flag is moved quickly into the hired position, the gear driven by the road wheels for actuating the registering-drums is braked by a device that is released when or just before the flag is in the lower position. In the arrangement shown, b is the ratchet wheel of this train of gear and from which the wheel f of the registering drums is actuated through the pawls and lever c, e, d. The brake consists of a lever m shaped to embrace the wheel b or the toothed wheel a under the action of a spring o. The flag g has a pin-and-slot connection with a slide h carrying a pin p. When or just before the flag is in the lowered position, the pin p engages the end of the lever m and moves it out of braking engagement with the ratchet b. At or near the end of the upward movement of the flag, a pin q on the slide engages the end of a lever r and moves it against the action of a spring l. The other end of the lever v is thus pressed against the lever m and the brake on the wheel b is released. A spring may be used instead of the lever m. In a modification, the side of the wheel b is provided with pins engaged by pins on a lever actuated in a manner similar to the operation of the lever m.
Patent GB-976392-A (GB)
Title: Improvements in or relating to the preparation of arylaminosulphonate derivatives ofnatural and synthetic polymers
Inventor: CAT ARTHUR HENRI DE
IPC: C08B3/14
Filed: 1960-07-18
Abstract: Arylamino sulphonate derivatives of natural or synthetic polymeric materials other than gelatin are made by adding an arylamino sulphonyl fluoride to a solution or suspension of the polymeric material, either in water or in an organic liquid, and which has a pH above 7 and stirring or agitating the mixture. Specified polymeric starting materials include carbohydrates or derivatives thereof containing free hydroxyl groups e.g. cellulose, starch, amylose and amylopectin and their derivatives, and synthetic polymers containing free hydroxyl and/or amino groups e.g. polyvinyl alcohol copolymers of vinyl alcohol with one or more ethylenically unsaturated copolymerizable monomers, e.g. vinyl acetate, polyvinylamine, polyvinylimine and polyethyleneimine.  The starting material may be in the form of threads, fibres, fabric or film.  Specified arylamino sulphonyl fluorides include o-, m-, and p-aminobenzene sulphonyl fluorides which may or may not be substituted in the benzene nucleus, e.g. by one or more alkyl groups, halogen atoms or nitro groups. Those mentioned include m-amino benzene sulphonyl fluoride, o-aminobenzene sulphonyl fluoride, p-amino-o-chlorobenzene sulphonyl fluoride, and p-amino m-methylbenzene sulphonyl fluoride.  Examples describe the treatment of cotton cellulose, sodium cellulose sulphate, hydroxyethyl cellulose, carboxymethyl cellulose, starch, polyvinyl alcohol and polyethyleneimine. Specification 976,391 is referred to.
Patent GB-298356-A (GB)
Title: Pasteurizing apparatus for liquids
IPC: A23L3/18
Filed: 1927-09-23
Abstract: 298,356. Marks, E. C. R., (Creamery Package Manufacturing Co.). Sept. 23, 1927. Filters, applications of.-Camoperated valves are provided for admitting air into apparatus for pasteurizing milk and other liquids having means for continuously conveying therethrough separated batches of the liquid maintained at the desired temperature. Each valve comprises a tubular casing 90, Fig. 4, mounted in the end wall of the apparatus and enclosing a valve casing 91 secured thereto by a nut 92. The air passage 94 is closed by a valve 93 controlled by a spring 97 extending between a head 96 on the valve stem 95 and a cap 98 having an aperture through which the air and the stem 95 pass. Filtering material 99 is provided at the outer end of the air passage. The valves are operated by cam bars, which engage and depress the heads 96.
Patent GB-332103-A (GB)
Title: Improvements in the manufacture of dollies for dry batteries
IPC: H01M4/10
Filed: 1929-08-17
Abstract: 332,103. Bumke Ges., H. A. July 26, 1929, [Convention date]. No Patent granted (Sealing fee not paid). Electrodes.-A dry battery electrode consisting of a carbon rod surrounded by depolarizer is provided with a protective coating such as collodion permeable to the electrolyte, the coating process being carried out in the apparatus shown in Fig. 1. The electrodes are carried in frames suspended from bars 21 which are carried by endless chains through a chamber 1. The electrodes dip at one point in their path in a tank 2 supplied with solution from a mixing vessel 6 which is connected by a pipe 8 with the chamber 1 to equalize the pressure and which is provided with a stirring device, actuated by a motor 13. Air and vapour are removed from the chamber 1 through pipes 14, 17. The upper part of the chamber is provided with an opening 20 through which the electrode carrier passes to enable the frames with the electrodes to be attached and removed by an operator outside the chamber. Figs. 2, 5 show portions of the frames for carrying the electrodes c, the carbons of which are held in grippers 26 which can be opened and closed by the rotation of rectangular rods 28. The frames are attached to the bars 21 by means of hooks 24.
Patent GB-646624-A (GB)
Title: Improvements in automatic envelope making machinery
Inventor: VOYSEY DONALD GEORGE
IPC: B31B19/00
Filed: 1948-09-27
Abstract: 646,624. Toothed gearing. CARMICHAEL & CO., Ltd., P. Sept. 27, 1948, No. 25175. [Class 80(i)] [Also in Group XVII] A rotary shaft 18, linked to a crosshead 15 by a connecting rod 16 and a crank 17, is driven by gearing adapted to accelerate the rotation of the shaft  during downward movement of the crosshead and to decelerate the rotation during upward movement of the crosshead. A bevel gear 19 loosely mounted on the shaft meshes with a bevel gear 29 rotatably carried on one arm of a double-armed lever 28 loosely mounted on the shaft. The other arm of the lever 28 is connected by a link 27 to a crank (not shown), which is rotated at the same speed and in the same direction as the gear 19 by a train of gears from a gear 20 bolted to the gear 19. The gear 29 is thus given an oscillatory motion which acts in the same sense as the rotation of the gear 19 when the crosshead is in the lower part of its stroke, and which acts in the opposite sense to the rotation of the gear 19 when the plunger is in the upper part of its stroke. Specifications 646,625 and 646,626, [Group XVII], are referred to.
Patent GB-222678-A (GB)
Title: An improved high-tension dry battery
IPC: H01M50/50
Filed: 1923-10-10
Abstract: 222,678. Hossack, J. G. Oct. 10, 1923. Cases. - A variable high tension battery is provided with a switch the blade of which makes direct contact with the caps of the central electrodes of the cells. Fig. 1 shows in plan a battery employing a rotary switch c mounted on a wood &c. core d. The switch has two blades which make contact with the caps a of the central electrodes of the cells b. Fig. 4 shows a modification in which a sliding switch c is employed. The switch is mounted on a metal bar d carried by supports e. Specifications 6443/09 and 168,360 are referred to.
Patent GB-587211-A (GB)
Title: Improvements relating to number plates for use with motor vehicles
IPC: G09F7/08
Filed: 1944-12-15
Abstract: 587,211. Name and number plates. BLUEMEL BROS., Ltd., and GARDNER, E. Dec. 15, 1944, No. 25181. [Class 3 (ii)] A changeable sign plate, e.g., a vehicle identification plate, comprises a preferably dished base 1 formed with a slot 2 in which the numerals, letters, &c. are mounted. Fig. 5 shows part of a letter 3 riveted or screwed to an H-section member 4 dimensioned to slide readily into the slot 2, and of a length equal to the width of the attached letter. The letter is recessed at 6 to bring its inner face flush with the front of the base 1. The member 4 may be of T-section, and enters the slot 2 through an enlargement 12 at one end, a retaining closure being bolted &c. over the enlargement after assembly. The letters &c. are evenly spaced apart by separate H-section distance pieces similar to the members 4, and the closure member may have a screw which abuts against the end distance piece to tighten up the parts.
Patent GB-481087-A (GB)
Title: Improvements in or relating to stationery webs
IPC: B41L1/32
Filed: 1937-09-17
Abstract: 481,087. Stationery webs. FANFOLD, Ltd. Sept. 17, 1937, No. 25320. Convention date, Sept. 25, 1936. Addition to 454,479. [Class 16] A stationery web is formed of a number of stacks A comprising record slips 1 and interleaved transfer slips 5 bound together along one edge, the stacks being connected together in series, wherein that edge of the lowermost slip 1 of a stack opposite the bound edge is attached to the upper surface of the next stack along the bound edge of the latter stack. Each lowermost slip 1 at its attaching edge has an extension 8 which is secured by adhesive on the upper surface of the bound edge of the next stack, and the extension is separable along perforations 9. The record slips 1 are detachable along perforations 3. Feed holes 7 may be formed in the binding strips 2 of the stacks.
Patent GB-1199593-A (GB)
Title: Improvements in or relating to Pick-up Apparatus for Magnetically Recorded Records
Inventor: BONNY CHRISTOPHER JOHN
IPC: G11B5/03
Filed: 1967-06-01
Abstract: 1,199,593. Playback of magnetic records. MARCONI CO. Ltd. 11 March, 1968 [1 June, 1967], No. 25389/67. Heading G5R. Information magnetically recorded as alternate North and South poles is read by a head having a closed, saturable core 1 and subjected to a unidirectional magnetic bias field FB. The bias field is produced by a permanent or electromagnet M and may be adjustable. As described, the head has an interrogating winding 3, supplied with a pulsed, square wave or sinusoidal signal, and an output winding 4. The effect of the field FB is to reinforce the North (say) pole fields and to reduce the South pole fields (Fig. 4) to improve resolution and/or packing density.
Patent GB-946300-A (GB)
Title: Polymerization process
IPC: C08C19/44
Filed: 1960-07-21
Abstract: A conjugated diolefinie hydrocarbon containing 4 to 8 carbon atoms is polymerized in the presence of a metallic lithium or organo lithium compound, the reaction terminated by adding an epoxidised monoolefinic hydrocarbon or a compound having the formula R1R2C=O in which R1 and R2 may be the same or different and may be hydrogen or phenyl radicals or alkyl hydrocarbon radicals and the contacting this product with a proton donor.  Specified diolefins are butadiene, isoprene, 2-3-dimethyl-butadiene and piperylene.  The lithium compounds include lithium hydrocarbons, both saturated and unsaturated, and aryl, alkylaryl and aralkyl lithium compounds, examples are methyl lithium, alkyl lithium, phenyl lithium, methylene dilithium, and lithium naphthalene.  Specified terminating agents include formaldehyde, acetaldehyde, benzaldehyde, acetone and benzophenone with ethylene oxide the preferred epoxidised hydrocarbon. The polymerization preferably takes place at between -120 DEG C. and 60 DEG C. in an inert liquid e.g. a hydrocarbon, or an ether such as tetrahydrofuran.  Polyurethane foams may be produced by reacting one of the above polymers with a diisocyanate and a foaming agent in the presence of a basic catalyst.  The diisocyanate may be 1.3-substituted propylene diisocyanate, the 1.5-substituted pentylene-1-diisocyanate, the 1.4-substituted cyclohexylene-1-diisocyanate, toluene -2.4-diisocyanate, and ethylbenzene 2.4.6-triisocyanate. Water is the specified foaming agent while the basic catalyst may be an amine e.g. triethylenediamine, dimethylaniline, morpholine, N-methyl morpholine and pyridine.  The reaction may take place in two stages, in the first of which the polymer is reacted with a diisocyanate in the presence of a basic catalyst and in the second of which, the foaming agent is added to the product of the first stage.  The foam may be cured.  In examples (11) a hydroxylated butadiene polymer, N-methyl morpholine and toluene-2.4-diisocyanate mixture foamed using is a mixture of N-methylmorpholine and water.  (12) Triethylene diamine is substituted for the morpholine and (13) the procedure of Ex (12) is applied to a hydroxylated polyisoprene.
Patent GB-190270-A (GB)
Title: Improvements in means for operating railway points or switches
IPC: B61L11/02
Filed: 1921-09-27
Abstract: 190,270. Wisniewski, J. S., Tarasiewicz, A., and Opalinski, J. Sept. 27, 1921. Mechanically operated from vehicle; spring control.-Points are operated by a rod 37 connected to a shaft 23 secured below the sleepers 12 and carrying arms linked by rods 34 to longitudinal shafts 27; these shafts are coupled by rods 29 to bars 30, 30' hinged at one end to brackets 31 and carried at the other end on springs 32, the bars being depressed by rollers carried on the locomotive. The points are retained in their set position by a projection 45, Fig. 5, on a flat spring 44. To enable the points to be set when trailed through, the bars 30, 30<1> are connected by levers 53 and rods 54, 54<1> to similar bars 52, 50 beyond the points.
Patent GB-500810-A (GB)
Title: Front wheel fork for motor cycles
IPC: B62K25/08
Filed: 1938-09-01
Abstract: 500,810. Hydraulic shock absorbers. BAYERISCHE MOTOREN WERKE AKT.- GES. Sept. 1, 1938, Nos. 25617 and 25618, Convention dates, Nov. 2, 1937 and Nov. 16, 1937. [Class 108 (iii)] [Also in Group XXXI] A liquid shock-absorber for a telescopic spring fork for motor-cycles, of the type having on each side an outer tube 4 sliding over a fixed inner tube 1 under the control of a spring 8, comprises a tube 19 secured at its lower end to the tube 4 by means of a screw plug 20 and nut 21. A piston rod 25 is fixed at its upper end to a screw cap 26 on the tube 1, and passes through a guide member 23 secured by a clamping-spring 22, its lower end being provided with a flexible one-way valve 27 and a guide ring 28. When the fork tube 4 and the tube 19 move upwards, the valve 30 opens until arrested by a stop-pin 30, and liquid passes through passages 33 on the periphery of the ring 28 and through the valve 27. When the fork tube 4 moves downwards, the valve 27 closes, and liquid is forced slowly through the bore 24 of the guide member 23, the liquid which collects above the latter flowing over the upper edge of the tube 19 back into the lower part of the tube 4. At the same time, liquid passes into the bottom of the tube 19 through ports 32 and a one-way flexible valve 31.
Patent GB-1153351-A (GB)
Title: Method and Apparatus for Operating a Sub-Sea Well.
IPC: E21B34/04
Filed: 1966-06-08
Abstract: 1,153,351. Wells &c. OTIS ENG. CORP. 8 June, 1966 [2 July, 1965], No. 25623/66. Heading E1F. A flow-conductor assembly for a sub-sea well installation includes a fluid-pressure controlled valve 45 and a passage for applying fluid pressure to open and close the valve. The conductor 46 is formed of concentric tubes with the valve 45 controlling flow through the inner tube and the passage being the space between the tubes. The outer tube is supported in the well by a blow-out preventer 33 and carries connector head 51 by which the passage and inner tube are connected to the surface by lines 50, 49, respectively, having connector ends engaging complementary parts in head 51. A guide 55 supported on the connector end of line 49 enables line 50 to engage head 51 in the correct position.
Patent GB-326195-A (GB)
Title: Improvements in or relating to the extraction of oils
IPC: C11B1/02
Filed: 1928-09-07
Abstract: 326,195. Beckman, J. W. Sept. 7, 1928. Fats and fatty and essential oils, extracting.-- Animal, fish, essential, or vegetable oils are extracted by macerating meat or other organic cellular matter with water, inoculating with bacilli producing lactic acid, and keeping at a temperature promoting the bacterial action while substantially neutralizing the lactic acid formed, e.g. by carbonate of lime or magnesium. Organisms which consume cellulose may also be present. Hexoses, e.g. cane sugar, molasses, or starch to promote growth, and a 10 per cent solution of sodium chloride to dissolve the proteins and accelerate the reaction may be added. In an example, dried or fresh cocoanut is ground or grated, and 1000 lb. thereof is made into a mush with 1 lb. of malt, 1 lb. of magnesium carbonate, and the necessary fresh or salt water. It is maintained at 120‹ F. for 100-125 hours, preferably in darkness or shadow and without air circulation, magnesium carbonate being added as found necessary to maintain substantial neutrality. Salt or water or both may be added and the mixture stirred to promote separation of the oil which is floated off. The residue is pressed, filtered, or centrifuged to separate further oil, and may then be sterilized by boiling and dried for use as food for animals.
Patent GB-644988-A (GB)
Title: Improvements in or relating to decomposable substances such as vitamins and other food supplements
IPC: A23L33/15
Filed: 1946-08-28
Abstract: Food supplements, such as vitamins or minerals, are added to food in the form of pellets of a hard waxy fat carrier obtained by the hydrogenation of an edible oil, such as soya bean oil.  The pellets may be coloured with material which changes on ageing, thus indicating the age of a particular batch.  Examples are given of pellets containing, in addition to inorganic components, provitamin A (carotene) and vitamins D and G.  According to the Specification as open to inspection under Sect. 91, capsules may be used instead of pellets, and gelatine or cereal grains may act as the carrier instead of fat.  Colour and shape may be relied on to identify the nature and amount of the food supplement.  Charts provided for comparison may be mounted on the packages in which the pellets are sold.  This subject-matter does not appear in the Specification as accepted.ALSO:Food supplements, such as vitamins or minerals, are added to food in the form of pellets of a hard waxy fat carrier obtained by the hydrogenation of an edible oil, such as soya bean oil.  The pellets may be coloured with material which changes on ageing, thus indicating the age of a particular batch.  Examples are given of pellets containing, in addition to inorganic components, provitamin A (carotene) and vitamins D and G.  According to the Specification as open to inspection under Sect. 91, capsules may be used instead of pellets, and gelatine or cereal grains may act as the carrier instead of fat.  Colour and shape may be relied on to identify the nature and amount of the food supplement.  Charts provided for comparison may be mounted on the packages in which the pellets are sold.  This subject-matter does not appear in the Specification as accepted.
Patent GB-788932-A (GB)
Title: Sealing device for rotary hydraulic machines, more particularly hydraulic couplings, rotary pumps and the like
IPC: F16J15/34
Filed: 1954-09-06
Abstract: 788,932. Stuffing-box substitutes. FIAT SOC. PER AZIONI, and BALDWIN, P. S. Sept. 6, 1954 [Sept. 7, 1953], No. 25803/54. Class 122 (5). The shaft 53 of a gear pump or other rotary hydraulic machine is sealed where it extends through the machine casing wall 52 by a ring 56 of resilient material, preferably rubber, pressed by resilient means, such as a helical spring 59, against a radial shoulder 55 formed on the outer side of the wall 52, the ring being rectangular in cross-section apart from its inner periphery which is arcuate. The spring is compressed between the bottom of a cap 61 screwed to the wall 52 and a cup 57, 58 surrounding the ring. The cap 61 may be replaced by a wire cage.