baber/WOPTO huggingface dataset:
Patent GB-1191571-A (GB)
Title: Process for Preparing Sodium Percarbonate
IPC: C01D7/22
Filed: 1968-01-19
Abstract: 1,191,571. Sodium percarbonate. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. 19 Jan., 1968 [19 Jan., 1967], No. 3107/68. Heading C1A. Sodium percarbonate (2Na 2 CO 3 3H 2 O 2 ) is prepared by continuously adding a soluble salt of magnesium, calcium or zinc, to a concentrated solution of sodium carbonate which has been treated with sodium hydroxide solution to neutralize any sodium bicarbonate present, the quantity of magnesium, calcium or zinc salt added being between 0À1 and 3À0 mole per cent (preferably about 0À5 mole per cent) of the amount of sodium carbonate in the solution, separating the precipitate and contacting the purified solution of sodium carbonate at a temperature of 30-40‹ C. with an aqueous solution of hydrogen peroxide containing between 30% and 90% by weight of hydrogen peroxide. The quantities of the solutions used are such that the molar ratios of hydrogen peroxide to sodium carbonate is between 1 and 2, and preferably between 1À3 and 1À5. The mixture may be seeded with a small quantity of percarbonate crystals in order to aid precipitation of sodium percarbonate. The amount of sodium hydroxide used to neutralize the bicarbonate in the solution may be up to 50 mole per cent in excess of that required for neutralization, but the excess is preferably about 20 mole per cent. The sodium percarbonate produced is fairly stable, but conventional stabilizers may be added to improve its stability.
Patent GB-585681-A (GB)
Title: Improvements in vibration dampers
IPC: F16F9/48
Filed: 1944-02-19
Abstract: 585,681. Spring forks for motor-cycles. BREWER, C. E. Feb. 19, 1944, No. 3134. [Class 136 (iii)] [Also in Group XXXII] A motor-cycle front fork suspension comprises a pair of telescopic legs each of which embodies an oleopneumatic vibration-damper (see Group XXXII) and consists of a lower tubular member a slidable over a tubular member b against the action of a spring d. The lower end of tube a is furnished with a wheel spindle and mudguard attachment lug' while the upper end of tube b is secured to the steering column assembly c.
Patent GB-1099415-A (GB)
Title: Method of incorporating photographic ingredients into colloids
Inventor: PAUW ALFONS JOZEF DE
IPC: G03C1/005
Filed: 1965-01-25
Abstract: 1,099,415. Incorporating photographic ingredients into colloids. GEVAERT-AGFA N.V. Jan. 25, 1965, No. 3149/65. Heading G2C. Photographic developing agents, antihalation or filter dyes, colour couplers and mask-forming compounds are incorporated into hydrophilic photographic colloids by dissolving in N-methyl-2- pyrrolidinone, blending the solution with an aqueous solution or melted gel of the colloid and removing the N-methyl-2-pyrrolidinone. The colloid may be a light-sensitive silver halide emulsion or it may be a colloid which is subsequently added to a light-sensitive silver halide emulsion. The N- methyl-2-pyrrolidinone may contain formamide and/or tetrahydrothiophen-1 :1-dioxide or tetrahydrofuran optionally also together with formamide and/or tetrahydrothiophen-1:1-dioxide, and may be removed by washing the colloid, by evaporation under vacuum or by evaporation after coating the emulsion composition. Photographic colloids specified are gelatine, polyvinyl alcohol, zein and casein. Moistening agents such as saponin, aryl-alkyl sulphonates and polyoxyalkylene compounds may be present in the N-methyl-2-pyrrolidinone solution.
Patent GB-625103-A (GB)
Title: Improvements relating to illuminated signs
IPC: F21V8/00
Filed: 1946-01-31
Abstract: 625,103. Signs. BOWKER, J. W. Jan. 31, 1946, No. 3189. [Class 3(ii)] In a box sign the box is made of panels, plates, strips and bars of methylmethacrylate or other plastic material and comprises two superposed parts, one for the illuminating means and the other for a display panel, the viewing windows of the display portion and preferably the corresponding parts of the illuminating portion being slidably connected with the frame of the box. The frame, comprising a roof 6, side panels and a floor 12 has angle sections 8 and fillets 10 fixed to its roof between which panels 7 are slidably mounted on ribs 9. Into the lower part of gaps 13 left between the panels 11, 7 fit the upper edges of transparent panels 14, through which the display panel C is viewed, the lower edges being supported by angle bars 15 on the floor 12, tongues 17 on the panels engaging cut-away posts 16 of the bars 15 to permit easy removal of the panels. The display panel C is held in position by lugs 18, 19 and is vertically adjustable by means of pins 20 which engage tongues on the panel and holes in the lugs 18. The frame is supported by an arm 21 through which an electric supply lead for lamps 23 is passed. The lamps are mounted on clips behind the sliding panels 7. The various fixed parts may be stuck together or held by screws.
Patent GB-710904-A (GB)
Title: Improvements in or relating to machines and a method for the production of milling cutters, drills, reamers and like cutting tools
Inventor: TALLIS CHARLES EDWARD
IPC: B23C3/32
Filed: 1952-02-07
Abstract: 710,904. Milling. BIRMINGHAM TOOL & GAUGE CO., Ltd. May 6, 1953 [Feb. 7, 1952], No. 3216/52. Class 83 (3) A machine for cutting flutes in milling cutters, drills &c. comprises a flexible member 27 winding on to a former 17, and mechanism for moving the former and for causing a rotary movement of a tool blank 14 so that flutes of a varying helix angle are formed on the blank. The blank 14 and former 17 are mounted coaxially on a slide 8 traversed by screw means at a constant rate past a milling cutter 21. The former 17 is rotated by a hydraulic motor 31, driving through gearing 33-39, 11, 12 and controlled by a valve 30 to which the cord 27 is attached. The valve 30 is mounted on a slide 23 formed with rack teeth and moved along rollers 22 simultaneously with, but at right angles to, the slide 8. The valve 30 thus controls the rotational speed of the former to maintain a constant tension on the cord 27 as it passes over a pulley 55. According to the position of the pulley 55 flutes of various helical angles may be cut on the work. Specification 704,400 is referred to.
Patent GB-136952-A (GB)
Title: An Improved Wave Motor.
Inventor: DEFOSSE GUSTAVE
IPC: F03B13/18
Filed: 1919-02-10
Abstract: 136,952. Defosse, G. Feb. 10, 1919 Wave energy, utilizing.-A wave motor comprises floats arranged between piers 3 and connected in pairs by links 2 pivoted to a cross 4 provided with a stop-bar 5, the masts 7 of the floats being connected by rods 11, links 12<b>, and a rod 13 to a lever 15 carrying a spring-controlled pawl 19 operating on a ratchet-wheel 21. The rods 11 rest on spring-supported balls 12<a>, and are pivoted to slides 9 which move in the mast against the action of springs 12 to allow the rcds to remain horizontal as the tide rises. The floats are made concave and convex on the seaward and landward ends respectively.
Patent GB-667600-A (GB)
Title: Improvements in and relating to safety braking devices
IPC: F16D65/28
Filed: 1950-02-08
Abstract: 667,600. Hoists. ETABLISSEMENTS P. DUCLOS. Feb. 8, 1950. [April 21, 1949] No. 3297/50. Class 78 (v). [Also in Group XXXIV] An automatic safety braking device, particularly for hoisting apparatus, the construction of which is shown diagrammatically, comprises a strong main spring 8, which is normally held in compression by an electromagnet 10 energized by the power supply to the hoist motor, and a two-part linkage 3, 7 connected between the brake shoes 2 and the electromagnet, the part 7 being coupled to the electromagnet armature and subject to the action of spring 8, and the part 3 being connected to the brake shoes 2 and subject to the action of a weak releasing spring 6. By arranging the linkage 3, 7 in two parts and providing a pedal 5, which acts upon the part 3, a moderated brake action may be imposed on that exerted by the spring 8. Particular embodiments of the invention as applied to a two-shoe external drum brake and a disc brake are described.
Patent GB-1537012-A (GB)
Title: Piezoelectric vibrator
IPC: G04F5/06
Filed: 1977-01-27
Abstract: 1537012 Piezo-electric vibrators DAINI SEIKOSHA KK 27 Jan 1977 [29 Jan 1976] 03355/77 Heading H1E A piezo-electric vibrator 1, preferably of rectangular form, has at least one corner 11 rounded or bevelled and is mounted, preferably on a spring support 2, in a sealed evacuated casing 3, so that if subjected to a shock which might cause the corner 11 to strike the casing, damage will be minimized. The corner may have a part-circular shape, a 45 degree bevelled surface, or several bevelled faces 9 at an angle. Vibrator materials mentioned are quartz and lithium tantalate.
Patent GB-347743-A (GB)
Title: Improvements in the oxidation of organic substances
IPC: C07C47/52
Filed: 1930-01-31
Abstract: Aldehydes; ketones; carboxylic acids.-Aromatic compounds containing methyl or methylene groups are oxidized by heating with oxygen compounds of selenium, such as selenious or selenic acid. The methyl and methylene groups attached to ring systems which are sensitive to the usual oxidizing agents, are thus oxidized to aldehyde, carboxyl or ketonic groups, without the ring system being affected.  In examples, (1) 2-methylbenzanthrone is oxidized by an aqueous solution of selenious acid to benzanthrone-2-aldehyde; this body gives an aldazine with hydrazine hydrate; 6-methyl-benzanthrone is similarly oxidized to benzanthrone-6-aldehyde; if oxidation is carried out by means of selenic acid in glacial acetic acid, or selenious acid in nitrobenzene, 2-methylbenzanthrone yields benzanthrone-2-carboxylic acid: (2) 2-benzyl-benzanthrone oxidized with aqueous selenious acid yields 2-benzoylbenzanthrone: (3) 5-methyl-naphthanthraquinone (prepared by condensing 1-methylnaphthalene with phthalic anhydride followed by ring closure) oxidized with aqueous selenious acid yields naphthanthraquinone-5-carboxylic acid and -5-aldehyde; the latter gives an aldazine with hydrazine hydrate; by stronger or milder reaction conditions it is possible to favour the production of the carboxylic acid or aldehyde derivative: (4) 1-5-dibenzoyl-2-6-dimethylnaphthalene oxidized with selenious acid in nitrobenzene yields 1-5-dibenzoulnaphthalene-2-6-dicarboxylic acid.
Patent GB-657436-A (GB)
Title: Improvements in windows for buildings
IPC: E06B3/50
Filed: 1949-02-08
Abstract: 657,436. Windows. CLARK, G. Feb. 8, 1949, No. 3390. [Class 20(iii)] The inner frame 1 of a window is mounted about a shaft 3 that has a gearwheel 6 at each end engaging a horizontal rack'within the top and bottom, members of the stationary frame whereby as the shaft travels from one side of the stationary frame to the other the inner frame becomes reversed; means are provided to latch it to either side stile of the stationary frame. The inner frame is made from generally triangular section stock as shown in Fig. 2 having an aperture at it's apex 1a in which the glass pane is held. Three sides of the inner frame form a unit which is easily removable, as by means of screws and brackets 12, 13, from the fourth side which is the one by which the frame is mounted on the shaft 3. The shaft 3 may be divided at 8-10 whereby the inner frame may be completely removed from the stationary frame.
Patent GB-125088-A (GB)
Title: Method of Producing Cases for the Contents of Projectiles.
Inventor: BESOZZI CELESTE
IPC: F42B12/76
Filed: 1916-03-08
Abstract: 125,088. Besozzi, C. April 27, 1915, [Convention date]. Fibrous tubes.-Consists in making a casing for the explosive charge of a projectile from cardboard by (1) coating it with a starchy gelatinous mixture, (2) bending it into a cylinder, and, after the edges have been joined together, shaping by means of suitable dies and rollers, (3) after reinforcing the tapered end with cardboard, dipping the shaped case into a heated bath of vegetable or mineral oils and colophony, (4) drying, heating for several hours, polishing, and varr,ishing. The cardboard, made from hemp fibres and absorbent material, is first cut into rectangular sheets. After coating, the edges of the sheet are recessed, and united bv means of an adhesive when the sheet has been rolled around a cylindrical core 1, Fig. 3. The core with the cardboard cylinder a on it is then drawn through a tube 2 by means of mechanism such as that shown, the tube being heated by a gas-ring 6. In order to taper the end of the cylinder, it is subjected to treatment by corrngated rollers 8, Fig. 4. The subsequent moulding of the case is effected by the apparatus shown in Fig. 6, comprising a former 10 and a die 13 having a knife 15 to cut off superfluous material. After dipping in the bath of oil and colophony, the case is dried at the ordinary temperature for 24 hours, and then heated for 6 hours to 120- 125 in an oven, where it becomes like wood.
Patent GB-746232-A (GB)
Title: Improvements relating to electric storage battery plates
Inventor: SCHLOTTER WILLIAM JAMES
IPC: H01M4/24
Filed: 1954-02-05
Abstract: 746,232. Batteries. ELECTRIC STORAGE BATTERY CO. Feb. 5, 1954 [Feb. 11, 1953], No. 3476/54. Class 53. The negative electrode of an alkaline accumulator of the silver-zinc kind consists of a mixture of zinc oxide and a binder of synthetic resin which may be applied as a paste to a grid which is then dried. The resin may be present to the extent of 8-10 per cent by weight of the zinc oxide or reduced to 5 per cent if the dry pasted plate is subjected to pressure. The resin may consist of polystyrene, polyvinyl chloride or butadiene styrene latex.
Patent GB-109212-A (GB)
Title: Improvements in Flexible Rollers.
Inventor: HOLDER HENRY ALLEN
IPC: F16C13/00
Filed: 1917-03-12
Abstract: 109,212. Holder, H. A. March 12, 1917. Rollers.-In a roller having a flexible cover A supported by the coils C of an inflated tube wound round an inner core or frame B, a helically formed rigid member D is mounted on the core and so arranged that its turns are between the convolutions of the tube. A second inflated tube E of small diameter may be wound in the spaces between the coils of the larger tubes. The tubes may be inflated by air pumped in through a passage F. A tapered block K is provided at each end of the roller.
Patent GB-631389-A (GB)
Title: Improvements in or relating to impact pulverisers
IPC: B02C19/06
Filed: 1946-12-13
Abstract: 631,389. Feeding pulverulent fuel. BLAWKNOX CO. Dec. 13, 1946, No. 36831. Convention date, Dec. 29, 1945. [Class 51 (i)] [Also in Group II] Pulverized coal from a pulverizer 10 flows through a pipe 14 to a separator 15 which separates the coal from the motive fluid, usually superheated steam, the coal and the steam then being fed separately to a furnace. The coal falls into a burner 16 which is supplied with air for combustion by a blower 17 through a pipe 18. The fuel and air are fired into the furnace or other combustion space 19. Steam discharged by the separator 15 flows through a pipe 20 with a small portion of the coal into the combustion space 19. Specification 624,648, [Group XXVIII], is referred to.
Patent GB-1509854-A (GB)
Title: Printing machines
IPC: B41J35/18
Filed: 1976-01-30
Abstract: 1509854 Ink ribbon mechanisms SIEMENS AG 30 Jan 1976 [20 March 1975] 03698/76 Heading B6F An ink ribbon guide 1 for a printer is movable to any one of three positions by engaging one of the electromagnets 10, 11 so as to rock an associated lever 2, 3 against the action of its spring 6, 7. The guide has L-shaped slots 14, 15 whose shorter arm receives a guide pin 5 of the unpivoted lever 3 when one of the magnets 10 pivots the other lever 2. With both magnets 10, 11 unenergized (Fig. 1), the guide is held fast in all three positions by the springs 6, 7 interacting with the slots 14, 15.
Patent GB-342896-A (GB)
Title: Improvements in or relating to refrigerators
IPC: A23B4/06
Filed: 1930-02-04
Abstract: 342,896. Cooling fish &c. SOC. ANON. POUR LE CONSERVATION INDUSTRIELLE DU POISSON, 1, Rue Lavoisier, Paris, and REEH, J. E. W., 8, Rue Reaumur, La Rochelle, both in France. Feb. 4, 1930, No. 3700. [Class 29.] In a refrigerator particularly for freezing fish, and consisting of a drum 1 divided into longitudinal compartments by radial walls 2 and rotating about a hollow shaft 3 with perforations 7 in its lower half to distribute cooling liquid on the fish in the compartments as described in Specification 300,209, [Class 29, Cooling &c.], the drum and a cylindrical bucket 13 surrounding it are provided with apertures 12, 14 respectively so that the liquid contained in the drum and the bucket cannot reach the hollow shaft. The walls 2 are inclined to radial planes passing through the axis in order to aid discharge of fish through hopper 18 and to retard the sliding motion of the fish entering through hopper 17. The compartments are provided with gratings 4 at their inner ends, and apertures 6 at their outer ends may be provided with covers. The cooling brine is withdrawn from the container 16 surrounding the bucket through a pipe 19. It then passes through a strainer 34 and pump 33 to a vat 38 containing the evaporator 39 of a refrigerating system. The cooled liquid then passes through pipe 40 to shaft 3 from which it is sprayed on the fish. The doors of hoppers 17, 18 are interconnected by rods 22 to synchronize their operation. The discharging fish falls into a net 28 in washing bowl 27 and water is sprayed on it through nozzle 31. To discharge the fish, the net is wound up on roller 29 which may be operated by mechanism controlled by the operation of drum 1.
Patent GB-343298-A (GB)
Title: Improvements in or relating to presses for tennis and other racquets
IPC: A63B60/44
Filed: 1930-02-04
Abstract: 343,298. Racket presses. FRY, W., Simmons Street, Sudell Cross, Blackburn. Feb. 4, 1930, No. 3750. [Class 132 (ii).] A pres s for tennis and other rackets comprises a pair of opposed rigid frames 2, 3, a pair only of U-shaped clamps 14 disposed one on each side of . the frames and adapted for engaging outside the same, and operating devices 11, 7 carried by the clamps and engaging one at least of the frames for positively moving the frames towards and away from one another to press or release a racket 1 positioned therebetween. As shown, the U-shaped clamps 14 are attached by screws 4 to the lower frame 2, and the upper limbs of the clamps are folded upon themselves to form a mounting for leaf springs 7 and to carry the clamping screws 11 adapted to be screwed down upon the upper frame 3. The ends of the leaf springs are attached to the upper frame by a pin and slot connection 9 so as to raise the upper frame as the clamping screws are unscrewed. Lugs 2<1> facilitate the correct location of the racket.
Patent GB-548020-A (GB)
Title: Improvements in or relating to the prevention of ice formation on aircraft
IPC: B64D15/16
Filed: 1941-03-19
Abstract: 548,020. Coated sheet materials. STRAUSZ, H. J. March 19, 1941, No. 3784. [Class 140] [Also in Group XIII] An ice accretion preventing composition comprising a slightly water-soluble hard, heatsoftenable base material such as glucose having dispersed therein a freezing point depressing substance such as calcium chloride and a substance evolving heat on contact with water such as anhydrous cupric chloride, and aluminium powder may be poured while hot on to a thin sheet of cellulose acetate and rolled to obtain an even layer of approximately inch thickness. Such sheets may be cut to shapes appropriate to any,part of the aircraft surface and stored under dry conditions until required. In an example glucose syrup is heated to about 90‹ C. to form a liquid of low viscosity, anhydrous calcium chloride added and anhydrous cupric chloride, potassium chloride and aluminium powder stirred in. The paste is heated to 140‹C. with vigorous stirring until it becomes a highly viscous dehydrated liquid setting to a very hard mass on cooling. In another example 3 lbs. cane sugar, ¢ lb. glucose syrup, 1 lb. dextrine powder and 1“ lb. of the ice-preventing and heat-generating substance are incorporated.
Patent GB-922632-A (GB)
Title: Improvements in heat exchangers
Inventor: BERGWERK WALTER
IPC: F28D9/00
Filed: 1961-02-01
Abstract: 922,632. Plate heat-exchangers. MARSTON EXCELSIOR Ltd. Jan. 29, 1962 [Feb. 1, 1961], No. 3807/61. Addition to 763,351. Class 64 (3). In a heat-exchanger of the type described in the parent Specification, the spaced plates are double-walled so that on perforation of any one wall mixing of the two fluid streams does not occur. As shown, the plates comprise double walls 2 and 3 separated by spacers 6 and defining between them spaces 9 which may communicate together with the subsidiary passages 11, with secondary headers (not shown) to enable leakage fluid to be drawn off. A pressure-indicating device may be incorporated to give visual or audible warning of leakage and the space 9 may be filled with perforated corrugated sheets 10 to aid heat conduction across the plate.
Patent GB-419433-A (GB)
Title: Improvements in and relating to antenna systems for radio-communication
IPC: H01Q11/04
Filed: 1933-02-08
Abstract: 419,433. Aerials. ATELIERS J. CARPENTIER, 46, Rue Arago, Puteaux, Seine, France. Feb. 8, 1933, Nos. 3859 and 3860. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 18, 1933]. [Class 40 (v).] To prevent fading, a multiple aerial system comprises elements designed to radiate or receive horizontallypolarized waves, and other elements which radiate or receive verticallypolarized waves so as to produce a circular field, with no zero "pickup ". In Fig. 5, the aerial array comprises a series 1-8 of inverted- L conductors connected through quarter wavelength feeders f1-f8 and wave feeders b1-68 to the receiving station R. In an alternative arrangement shown in Fig. 6, the current flow through the various antennae is represented by the arrows. In Fig. 7 the vertical elements a, al and c, c1 of the left-hand group combine with the horizontal elements el, m and e, m1 of the right-hand group to produce a circular field. Figs. 8 and 9 show equivalent arrangements, in which horizontal elements are effective in one group and vertical elements in the other group, as indicated by the balanced and unbalanced arrows.
Patent GB-288244-A (GB)
Title: Improvements in or relating to liners for interposition between rubberized fabric
IPC: D06M15/07
Filed: 1928-02-07
Abstract: 288,244. Goodyear Tire & Rubber Co., (Assignees of Sebrell, L. R.). April 6, 1927, [Convention date]. Single coatings; multiple superposed coatings. -Liner material for insertion between freshly prepared rubber-coated fabric, such as the fabric used for making pneumatic tyres, consists of fabric coated with nitro-cellulose, with which is incorporated a softening agent. For instance, from one to ten per cent of diethyl phthalate may be mixed with the nitro-cellulose solution. Other esters of phthalic acid, such as dibutyl phthalate or diamyl phthalate may be used, or tricresyl phosphate or castor oil. The softening agent may be applied to the fabric by spraying or dipping after the coating of nitro-cellulose has been applied.