baber/WOPTO huggingface dataset:
Patent GB-531014-A (GB)
Title: Improvements in or relating to the manufacture of cellulose derivatives
IPC: C08B3/00
Filed: 1939-07-08
Abstract: 531,014. Cellulose esters. BRITISH CELANESE, Ltd., (Celanese Corporation of America). July 8, 1939, No. 19953. [Class 2 (ii)] A primary organic acid ester of cellulose obtained by treating cellulose with an organic acid anhydride in a hydrophile solvent for the primary ester using sulphuric acid as catalyst is converted into a secondary ester by adjusting the amount of sulphuric acid and incorporating such an amount of water in the esterification solution that a medium is obtained containing sulphuric acid in amount equal to 4-10 per cent. of the weight of the cellulose employed as starting material and 8-12 per cent. of the water present, and part of the desired ripening is effected at a temperature of 40-80‹C. More water is then incorporated so as to bring the ratio of sulphuric acid to water below that existing at the commencement of ripening, and further ripening is allowed to take place at 40-80‹C. The process is applicable to the production of cellulose acetate, propionate, butyrate or other ester. If the sulphuric acid employed for esterification is higher than that required for ripening the excess may be neutralized e.g. with magnesium carbonate or sodium acetate. The hydrophile solvent may be a lower fatty acid. In an example, cotton linters are acetylated with a solution containing acetic acid, acetic anhydride, and sulphuric acid. On completion of acetylation, water is added to destroy the excess of acetic anhydride, and part of the sulphuric acid is neutralized with magnesium carbonate. A further quantity of water is added. The mixture is stirred and maintained at about 60‹C. After some hours a diluted solution of acetic acid is added and the mixture is again stirred for a few hours at 60‹C. The ripened cellulose acetate is then precipitated by adding a large quantity of water. It may be used in the manufacture of actificial filaments, films, lacquers, and other products.
Patent GB-497496-A (GB)
Title: Combined moulding die and ejector for use in the manufacture of containers and their covers from plastic material by a moulding operation
IPC: B29C33/44
Filed: 1937-07-19
Abstract: 497,496. Moulding containers, lids, &c. BOENECKE, A. July 19, 1937, No. 19982. Convention date, June 16. [Class 87 (ii)] Relates to dies, for moulding from plastic material containers or lids and covers therefor having internal locking lugs, of the kind in which the locking lugs are formed in grooves in a member adapted to be moved relatively to the mould to eject the moulded article, which can then be removed by a twist or partial rotation from the ejector. The die comprises an upper part O, Fig. 1, a lower part U having projections K, Fig. 4, and an ejector member, Fig. 3, having grooves Q in arms adapted to be nested into the lower member U, Fig. 4. According to the invention, the ejector is made integral with an operating stem S, and the shortest distance between the front faces F of consecutive arms is greater than the length of a groove Q, or of the longest groove, when there is more than one per arm. As shown, the die produces a circular flanged cover P having internal lugs N. A die is also described for producing rectangular covers having side flanges with internal lugs. The lugs may be inclined and at the same distance from the top of the cover, or they may be arranged in the form of a helix. The covers are raised from the mould by the stem S, and are removed by a sliding or twisting movement.
Patent GB-500785-A (GB)
Title: Improvements in and relating to valve seats
IPC: F16K1/42
Filed: 1938-07-06
Abstract: 500,785. Valve seats. KOPKE, E. July 6, 1938, No. 20024. Convention date. July 6, 1937. [Class 135] A valve seat comprises a separate inserted bushing in the form of two concentric rings 1, 2, the outer ring 2 being welded at 7 or screwthreaded at 8 to the valve casing 6 and the inner ring 1, which is formed with the actual seating surface 9, being welded at 3 to the outer ring. Preferably the ring 1 is supported at 10 by the valve casing and also by an abutment 5 on the ring 2. In a modification, the inner ring is made in one piece with the outer ring by turning, milling or casting a sufficiently deep groove 4 in a ring of correponding thickness.
Patent GB-642821-A (GB)
Title: Improvements relating to the spinning of textile yarns
IPC: D01H9/06
Filed: 1945-08-03
Abstract: 642,821. Spinning textile yarns. MARTINEZ, P. F. Aug. 3, 1945, No. 20029. Convention date, Oct. 5, 1944. [Classes 120(ii) and 120(iii)] In a centrifugal spinning machine wherein yarn passes into a rotating vessel through a yarn guide which also operaes as a pneumatic yarn ejector a bobbin holder is adapted to be withdrawn from the rotating vessel as the yarn guide is inserted and vice versa. The guide may be reciprocated in order to traverse the yarn on to the inner surface of the vessel. Rovings are passed from drawing rollers 1, through the guide 2, into the vessel 4 and; when a desired amount of yarn has been collected in the box, the drawing rollers 1 are stopped and the guide 2 is removed from the vessel 4 by means of a handle 9, which, by a link 10, simultaneously projects a bobbin 3 into the vessel. By reason of the motion of the vessel 4, the yarn is transferred to the bobbin 3 and the end extended to the guide is reversed by the bevelled edge of the vessel. To resume spinning, the bobbin 3 is removed from the vessel 4, the guide 2 is re-inserted, the drawing rollers 1 are fibre started and air is blown through an inlet 5 to draw the severed end of yarn into the vessel. It is stated that the axis of the vessel may be either horizontal or vertical. The Specification as open to inspection under Sect. 91 comprises also forming hanks by employing a vessel of large diameter in comparison with the depth. This subject-matter does not appear in the Specification as accepted.
Patent GB-1002324-A (GB)
Title: Fluorinated carboxylic acids and their derivatives
IPC: C09K23/00
Filed: 1962-05-24
Abstract: Hydrocarbon fuels and lubricating oils contain as additives an acid of the formula <FORM:1002324/C4-C5/1> where R is F or CF3 and Rf is an acylic perfluoroalkylene radical, or a derivative thereof (see Division C2).  Specified as additives for oils and waxes are quaternary ammonium salts of acids of the above formula.ALSO:The invention comprises acids of the formula <FORM:1002324/C2/1> where R is F or CF3 and Rf is an acyclic perfluoroalkylene radical of 3-9 carbons, at least three extending in a chain between the -C-and the -COOH groupings; and salts (including quaternary ammonium salts), esters, thiol esters, amides, halides and nitriles thereof.  The acids may be prepared by telomerizing C2F4, with or without another perfluoro-olefine such as CF3CF : CF2, C2F5CF : CF2 or C3F7CF : CF2, with CF2Cl.CR(CF3)I, and then (1) reacting with chlorosulphonic or fluorosulphonic acid and then hydrolysing, or (2) reacting with acetylene and then oxidizing with aqueous alkaline KMnO4. The derivatives of the acids are prepared by normal methods.ALSO:Water and oil repellency is imparted to fabrics, paper and other cellulosic materials and leather by treatment with an acid of the formula <FORM:1002324/D1-D2/1> where R is F or CF3 and Rf is an acylic perfluoroalkylene radical of 3-9 carbon atoms, or with a derivative thereof (see Division C2).  Derivatives specified for this purpose are chromium and aluminium complex salts of the Werner type, and quaternary ammonium salts and polymers of vinyl esters of the acids. An example pads swatches of cotton with aqueous isopropanolic solutions of Werner type chromium complexes of the acids, the solutions containing urea also.ALSO:Water and oil repellency is imparted to materials such as fabrics, paper, wood and other cellulosic material, leather, glass, metals and ceramics by treatment with an acid of the formula <FORM:1002324/B1-B2/1> where R is F or CF3 and Rg is an acyclic perfluoroalkylene radical of 3-9 cabon atoms, or with a derivative thereof (see Division C2).  Derivatives specified for this purpose are chromium and aluminium complex salts of the Werner type, quaternary ammonium salts, and polymers of vinyl esters of the acids.
Patent GB-404627-A (GB)
Title: Improvements in or relating to the manufacture of calcium hypochlorite
IPC: C01B11/06
Filed: 1932-07-15
Abstract: Normal calcium hypochlorite in the form of easily filterable, tetragonal plates is obtained by producing hexagonal crystals of basic calcium hypochlorite in an aqueous medium, separating same, and chlorinating the crystals in the presence of additional water. The basic hypochlorite may be obtained by chlorinating milk of lime, or by adding a liquor containing calcium hypochlorite to milk of lime, followed if desired by chlorination.  The liquor remaining after production of the normal hypochlorite may be employed in this latter process.  The hexagonal crystals appear to consist of dibasic calcium hypochlorite, and are only produced in the presence of excess lime; their formation is preferably observed microscopically, but other methods of control may be employed.  Specification 378,847 is referred to.
Patent GB-708131-A (GB)
Title: Improvements in devices comprising a magnetic circuit of highly-permeable material
IPC: H01F29/14
Filed: 1951-08-27
Abstract: 708,131. Transformers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 27, 1951 [April 23, 1951], No. 20136/51. Class 38(2) A device such as a pulse transformer or a transforriier having DC. magnetization comprises at least one of the A.C. windings 2, 3 surrounding a magnetic circuit of high permeability material 1, in which a constant premagnetizing field is produced by a permanent magnet insert 4 of high resistivity material having a coercivity of at least 750 Oersteds, and a value of retentivity in Gauss of not more than four times the coercivity in Oersteds. This latter material may be of the kind described in Specification 708,127 comprising non-cubic crystals of mixed oxides of iron and at least one of the metals barium, strontium and lead, with in some cases' calcium. So that this material is not operated on an irreversible part of its curve the field strength  I H C  of disappearance of magnetization should be at least 1.2 times the coercivity  B H C . During passage of the pulse in a winding, the flux is reversed in material 1 from saturation in one direction to saturation in the other, and so that the saturable part of the hysteresis curve of the permanent magnetic material 4 is not reached material 1 has a low saturation value, or body 4 is given a considerable leakage field, e.g. by means of a magnetic shunt The high resistivity of material 4 obviates the need for a conductive screen. Specifications 708,121, 708,132, 708,133, 708,134, 708,135, 708,136, 708,137 and 708,140, also are referred to.
Patent GB-644733-A (GB)
Title: Improvements in or relating to mountings for exterior driving mirrors on vehicles
IPC: B60R1/06
Filed: 1948-07-28
Abstract: 644,733. Hinges. BATTERSBY, D. J. July 28, 1948, No. 20154. [Class 65(ii)] [Also in Groups XIV and XXXII] In a mounting on a vehicle for an external driving mirror of the kind in which the mirror is carried by an arm which can be adjusted angularly in a bracket fixed in an appropriate position on the vehicle in such a manner that it cannot readily be removed therefrom, the mirror 1 is attached to an arm 2 by a universal mounting (not shown) offset from the centre of the mirror, the arm being pivotally supported on a bracket 3 by means of a hinge comprising a fibre nut 25 having a hexagonal portion engaging a similarly shaped aperture in one arm 15 of the bracket 3 and a depending conical portion 26 drawn into frictional engagement with the arm 2 by a stud 28. A channel section adaptor 4 is secured to the bracket 3 by a countersunk screw 7 which is concealed when the adaptor and the bracket are secured to a flange of the vehicle door by other screws 12 locked in position so that when the arm 2 is attached to the bracket 3 the screws 12 are completely hidden.
Patent GB-235052-A (GB)
Title: Improvements in and relating to clips and couplings
IPC: F16B7/04
Filed: 1924-08-27
Abstract: 235,052. Cheffins, G. Aug. 27, 1924. Spigot joints with slotted sleeve.-A clip for use e.g. with the sleeves, elbows, bends, and tees used for coupling the conduits of electrical installations, comprises a tubular body 14 adapted to embrace the members to be joined and having lugs 11 12 inclined to each other and provided with holes through which the middle parts of locking-members 13 can pass, in such a way that rotation of the locking-members causes the parts 11, 12 to be drawn together to tighten the clip. In modifications the clip may be formed as a T- piece and clips with only one locking-member can be used.
Patent GB-1148881-A (GB)
Title: Improvements in or relating to fuel assemblies for nuclear reactors
Inventor: SEDDON THOMAS
IPC: G21C3/04
Filed: 1965-05-13
Abstract: 1,148,881. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 4 May, 1966 [13 May, 1965], No. 20221/65. Heading G6C. In a nuclear reactor fuel assembly, a cluster of fuel pins 6 are held parallel to each other by the spacer grid 1. The latter is formed of stainless steel strip, shaped into octagonal cells 2, each containing a pin. The grid is secured to certain of the fuel pins by a sleeve 7, welded to the pin. The grid and pin are assembled by sliding the rod into a cell through the recesses 5 and then rotating the pin to cause the projections 9, to engage the grid. In an alternative form the sleeve 7 forms a section of the pin sheath.
Patent GB-202393-A (GB)
Abstract: 202,393. Rushen, P. C., (American Coated Paper Co., Inc.). May 16, 1922. Drying materials in long lengths. - Apparatus for drying a web of paper &c., and comprising a series of superposed unit casings and means for supporting and guiding the web therethrough, is provided with means for circulating air through the casings and withdrawing moisture-laden air therefrom, and heating-elements arranged above and below the web. The web 3, Fig. 1, is passed through a series of enclosed casings upon foraminous endless bands 5 which travel with the web. Air passes into the enclosure 22 through the openings 24, 25 and through openings 20 into the casings from which it is withdrawn through nozzles 11, 12 and passed through the chamber 28, header 27, and air-heating coil 26 to the atmosphere. Moisture laden air may be withdrawn from the enclosure through nozzles 31, which are secured to a pipe 30 communicating with the chamber 28. Each casing is heated by electric elements 2. In a modification, the casings are arranged in separate enclosures, and the web is supported between pairs of endless bands. The uppermost casing is supplied with air which is withdrawn from the other casings by a, fan 84, Fig. 11. and the latter casings are supplied with air winch is withdrawn from the uppermost casing by a fan 88<1> and heated by its passage over the coil 82. Specification 181,353 is referred to.
Patent GB-202871-A (GB)
Abstract: 202,871. Barr, J. M. M. March 1, 1922. Switches, latching and unlatching; actuating. -In apparatus in which a release or trigger member is operated to cause a lever, slide, wheel &c., to be oscillated, frictionally operated means exerts a wedging acticn on the member to be oscillated. The invention is applicable to the operation of switches in calculating-machines. Balls e are arranged in a casing b around a constantly rotating disc a, and may be released one at a time by a trigger f operated by magnetic or mechanical means g so that they fall or are spring-pressed into contact with a spring- controlled lever c, each ball being forced frictionally past the lever by the rotating disc so as to produce one oscillation of the lever.
Patent GB-385231-A (GB)
Title: Improvements in lining bands for headwear
IPC: A42C5/02
Filed: 1932-07-18
Abstract: 385,231. Hats. DUNKERLEY HAT MILLS, Ltd., 129, York Street, Sydney, DUNKERLEY, A. G., Glenora, Rawson Street, Epping, and KEIR, S., 11, Selbourne Street, Burwood, both near Sydney, Australia. July 18, 1932, No. 20301. [Class 63.] Sweat-bands.-The lower edge B of a sweat-band of leather or leather substitute is skived and cemented to the inner flap D of a grease-proof strip folded over a cane strip or other piping material, the latter being secured in the fold by stitching. The outer flap of the greaseproof strip is secured to the hat crown by cement or by stitching above the line of stitching which secures the piped edge.
Patent GB-148404-A (GB)
Title: Control valve for elastic fluids
IPC: F16K1/44
Filed: 1920-07-09
Abstract: 148,404. R÷der, K.. Oct. 27, 1914, [Convention date]. Closure members. - A double - beat valve is constructed so that the dynamic action of the flowing fluid does not interfere with the axial balance, and comprises a valve with two throttling passages, and has the part of the valve surface lying in the direction of fluid current behind the throttling passages made cylindrical, and of the same diameter as the inner boundary of the throttling passages. The upper beat i is formed on a ring adapted to engage a seat c provided with a ledge c<1> to form a throttling restriction c<2>, and the valve member between this restriction and the lower beat h is formed with a cylindrical external surface. The edges of the seats on the outlet side are formed so that the friction created by the two jets of fluid on the valve surface is mutually counterbalanced. Passages g are formed in the valve member or casing to establish communication between the chamber e and the inlet d.
Patent GB-951324-A (GB)
Title: Improvements in or relating to an article of furniture having a seat or lying portion
IPC: A47C7/48
Filed: 1960-06-09
Abstract: 951,324. Seats. G. STRASSER. June 9, 1960 [June 9, 1959], No. 20359/60. Heading A4J. A chair has a seat part 1 connected at 5 to an angle lever 4 which is pivotally connected to the frame at 6. In the low chair position the front of the seat is supported on part 4a of the lever and the rear is supported on bar 8 while in the high position the front of the seat is supported by part 4b of the lever abutting against stop 7 and the rear is supported on bar 8a. The bar may be angularly adjustable and may be capable of locking the seat in the high position. The seat part 1 may have an extension 1b and the bracket 5 have a slot of corresponding length so that the seat may be slid forward to give the chair greater depth or in the case of a sofa or bench seat allow the high position to form a bed.
Patent GB-1191155-A (GB)
Title: Method and Apparatus for Producing Pipe Couplings
Inventor: LIMBURG KARL
IPC: B28B11/08
Filed: 1967-05-03
Abstract: 1,191,155. Moulding pipe couplings. KERAMIKMASCHINEN m.b.H. & CO. GES. FUR. 3 May, 1967, No. 20416/67. Heading B5A. [Also in Division F2] In a method of making a branched pipe coupling of ceramic material, cores 5 and 6, Fig. 1, are inserted into a two-part mould 4 to define a cavity which is filled with the ceramic material, e.g. from a screw or plunger injection apparatus 1. Grooves 17, 18 and 19, Fig. 4, are formed in the pipe during moulding. The cores or the mould parts may be coated with a release agent, e.g. p.t.f.e. The mould has apertures through which excess material is discharged.
Patent GB-614130-A (GB)
Title: Improvements in or relating to electric contacts
IPC: H01H1/12
Filed: 1946-07-09
Abstract: 614,130. Switch contacts. CIBIE, P. July 9, 1946, No. 20428. Convention date, April 21, 1939. [Class 38 (v)] Contacts for vibrating- contact apparatus are in the form of rods a, a<1>, which are fixed at one end only to their supports b, bl, so that expansion does not cause distortion, with resultant point-contact and crater-formation.
Patent GB-614134-A (GB)
Title: Improvements in or relating to launching means for bridges
IPC: E01D21/06
Filed: 1946-07-09
Abstract: 614,134. Bridges. FOULKES, R. A. July 9, 1946, No. 20471. [Class 20(i)] Means for launching a deck bridge comprise a tail portion 6, Fig. 1, having an inclined end detachably connectible to a correspondingly shaped rear end of the deck bridge 1 by means 7, when disconnected, permitting of sliding movement between the inclined end of the tail portion 6 and the rear end of the bridge whereby the rear end of the bridge is lowered into position. A deck bridge 1 of the type in which the deck or road surface is on the top of the main girders has a launching nose 4 removably clamped to the upper deck of the forward portion of the bridge and a tail portion 6 connected to the end of the bridge by means of launching slides 7. Each slide 7 consists of two parallel steel plates 8, Figs. 5, 7, with flanges 9, 10 and provided with pivoted rollers 12 which serve to maintain alignment during the sliding movement between the bridge and tail portion. A clamp 13 is removably secured to the plates 8 by bolts 14 and a further clamp 15 consisting of two serrated plates 16 is secured to the plates 8 by a bolt 17 against the action of the spring 18 which urges 'the plates 16 apart when the bolt 17 is released. The web plates 8 are provided with a transverse hole 19. Before commencing the launching operation one of the slides is secured to the lower extremity of each main girder of the tail portion and one to the upper extremity of each main girder at the rear of the bridge by means of bolts through the transverse holes 19. The tail portion is then secured to the rear end of the bridge by means of clamps 13, 15 and the launching nose 4 is attached to the forward portion of the bridge. The complete structure is then moved forward on rollers 20-26, Fig. 1, until at the point of balance, it tips forward on the rocking rollers 26 until the launching nose 4 is resting on the far bank rocking rollers 27. The bridge is then moved on the rollers 26 and the forward end lowered by the jack 29 to seat the bearing 2 on the support 31 on the far bank, and the launching nose is then dismantled. The clamps 13 on the slides 7 are then removed and the clamps 15 released so that the tail portion 6 is allowed to move backwards while the bridge slides down until the top and bottom launching slides 7 contact as shown in Fig. 3, the sliding movement being controlled by a winch and pulley block arrangement. The real end of the bridge is then supported on the jack 28, the tail portion rolled clear, the launching slides removed and the bridge jacked down to lower the rear bearings 2 on to its support 30. Specification 553,374 is referred to.
Patent GB-236072-A (GB)
Title: Improvements in and relating to spray fire extinguishers using dry extinguishing powder
IPC: A62C13/00
Filed: 1924-08-29
Abstract: 236,072. Friedrich, W. Aug. 29. 1924. Drawings to Specification. Re-vaporizing liquefied gases.-Liquid carbon dioxide is discharged from its container through a vessel filled with porous material such as copper, brass, aluminium, and iron turnings, fibrous material, sawdust, pumice stone &c. to assist in its evaporation.