baber/WOPTO huggingface dataset:
Patent GB-1159066-A (GB)
Title: The Manufacture of Oxalic Acid.
Inventor: DUROUX JACQUES MARIUS
IPC: C07C51/27
Filed: 1967-05-25
Abstract: 1,159,066. Oxalic acid. RHONE-POULENC S.A. 25 May, 1967 [25 May, 1966], No. 24443/67. Heading C2C. Oxalic acid is prepared by oxidizing propylene, or an intermediate product (for example lactic acid or α-nitratolactic acid) containing two or three carbon atoms which can be formed by nitric acid and/or nitrogen peroxide oxidation of propylene, with nitric acid in the presence of, as catalyst, a compound of iron, aluminium, chromium, tin, bismuth, iodine, which is soluble in the reaction medium. The catalyst, which may be present in an amount from 0À01 to 10% and preferably from 0À1 to 2% by weight (expressed as metal or as iodine) based on the weight of the reaction mixture, is preferably a sulphate, nitrate, chloride or phosphate of iron, aluminium, chromium, tin or bismuth; ferrous oxide, ferric oxide, or chromium trioxide; an iodate; a chromate; or chromic acid. The catalysts may be used in processes wherein gaseous propylene is passed into an aqueous medium containing at least 50% by weight of nitric acid at 40-80 C. or by introducing the propylene into nitric acid and then heating the solution obtained and wherein the catalyst may be introduced at the beginning of the reaction or at the beginning of the conversion of the oxidation products, for example lactic acid or α-nitratolactic acid, preferably by dissolving the catalyst in the oxidizing agent. Oxalic acid is prepared by treating propylene with nitric acid containing chromium nitrate and subsequently passing oxygen through the reaction mixture and heating; by treating propylene with aqueous nitric acid containing nitrogen peroxide and subsequently heating with chromium nitrate, ferric nitrate, stannous chloride, aluminium nitrate, bismuth nitrate or potassium iodate; by treating α-nitratolactic acid with nitric acid containing chromic acid; and by reacting lactic acid with nitric acid containing chromic acid. Suitable apparatus for the reaction is described by reference to drawings (not shown). α-Nitrato-lactic acid is obtained by treating a mixture of oxygen and propylene with nitrogen peroxide at 0 C.
Patent GB-1152864-A (GB)
Title: Quick-Action Chuck
Inventor: BRUNDLER PAUL
IPC: B23B31/113
Filed: 1966-06-01
Abstract: 1,152,864. Chucks. P. BRUNDLER. 1 June, 1966 [1 June, 1965; 26 Jan., 1966], No. 24464/66 Headings B3B and B3C. A quick-acting chuck comprises a body 1, Figs. 1, 2, having a conical bore 2 for a boring tool 4, a clamping device 6 for the tool, and a device 22 operated by a ring 27 to displace the device 6 axially. Device 6 comprises an insert 7, a spring 8, a screw 9, a thrust nut 10, and a stop 11. Insert 7 has projections 12, 13, which form a bayonet joint with tool 4, and screw 9 has a face cam 21 which co-operates with a face cam 24 on a bolt 23 of device 22. Ring 27 can be locked in its operating position by means of a locking device 28, and stops 33-36 are provided to prevent projections 12, 13 from slipping out of the bayonet joint. In operation, ring 27 is rotated, cam 24 moves ring 10 axially to compress spring 8, tool 4 is connected to projections 12, 13, and rotated until it is blocked by stop 35, or if the latter is not fitted, stop 33, cam 24, is further rotated, and tool 4 is drawn in to the chuck by spring 8. In a modification, tool 102, Fig. 3, is held in the chuck by two conical portions 109, 110, and is clamped by a device 103. The latter comprises projections 119, 120 which form a bayonet joint with tool 102, is actuated to clamp the tool. by springs 127, and is moved axially to release the tool, by sliding a sleeve 135 so as to pivot a lever 104.
Patent GB-872936-A (GB)
Title: Means for effecting entrance into germ free enclosures
IPC: G21F7/053
Filed: 1959-07-17
Abstract: 872,936. Germ-free &c. cabinets. KEWAUNEE MANUFACTURING CO. July 17, 1959 [April 23, 1959], No. 24596/59. Class 14 (2). In a controlled enclosure 2 of the type in which an operator performs within the enclosure through rubber gloves 26 secured in sealing relation to entrances 15 in a wall 5 for the hands and arms of the operator, there is provided an entrance structure consisting of a pair of annular glove-supporting members 16 (only one of which is shown in the Figure) secured intermediate their ends in fluid-tight relation in laterally spaced openings in the wall and the end portions of the members each have an annular groove 19, 21 to receive pairs of gloves, one pair being receivable on the outer end (as shown) and the other pair 24<SP>1</SP> being receivable on the inner end, whereby gloves may be replaced, e.g. prior to rupture, without contaminating the interior of the enclosure. In a modification, Fig. 3 (not shown), four annular grooves are provided on each member 16.
Patent GB-1029244-A (GB)
Title: Improvements in mine-roof supports
Inventor: KIBBLE JOHN DUNBAR
IPC: E21D23/00
Filed: 1961-07-07
Abstract: 1,029,244. Advancing mine roof supports. COAL INDUSTRY (PATENTS) Ltd. July 9, 1962 [July 7, 1961], No. 24621/61. Heading E1E In an advancing mine roof support assembly comprising leading and trailing support units 1, 2, each with a roof-contacting part, a roofcontacting member 5 pivotally mounted on one of said parts and slidably mounted on the other, and means to advance the units relatively by alternate longitudinal extensions and contractions of the assembly, the said part on the unit 2 has two spaced parallel bend-proof roof-contacting bars 6 interconnected to form a slide-way to receive a part of the member 5. The unit has two such bars 6 interconnected by a hinge pin 7 for the member 5 which is non-bend-proof. The bars 6 have cantilever portions 6a. The units 1, 2 are movably attached to a conveyer drive unit 3 by double-acting rams 4 and mount conventional roof-contacting bars 11.
Patent GB-803301-A (GB)
Title: Aircraft wing mounting
IPC: B64C3/00
Filed: 1956-08-13
Abstract: 803,301. Aircraft wing mountings. METZLER, E. G., and CURLEY, M. T. Aug. 13, 1956, No. 24742/56. Class 4. In an aircraft wing mounting gust and landing loads on the wings are relieved by a mounting which permits the wings to pivot about fore-and-aft axes against the action of shock absorbers. The wings 10, 11 are pivotally mounted at 12 and 13 on the fuselage 14 and extended inwardly at 15 and 16 for pivotal connection at 27 and 28 with the piston rods 25 and 26 of cylinders 17 and 18 which are secured to the fuselage. Each piston rod 25, 26 terminates in a piston 19, 20 respectively separated from the base of the cylinder by a stack of resilient washers 32, 33. The volumes of the cylinders above the pistons are connected through pipes 44, 43 to a valve 21 which is connected also by pipes 39, 40 to the lower volumes of the cylinders. The remaining connections to the valve are by pipe 41 to an accumulator 23 and pipe 42 to a liquid reservoir 24, the accumulator and reservoir being connected through a pump 22 and a check valve 46. The reservoir is pressurized through an air valve 48. With the valve 21 in the position shown in Fig. 2, pressures above and below the pistons are balanced and the resilient washers absorb excessive shocks. The valve may be adjusted to connect pipes 39 and 41 so that downward movement of the pistons is resisted by accumulator pressure, or pipes 41 and 42 may be connected, thereby blanking off pipes 39 and 43 to lock the pistons hydraulically. Movement of the valve to connect pipes 41 and 43 causes upward movement of the pistons to be resisted by accumulator pressure.
Patent GB-702357-A (GB)
Title: Improvements relating to high frequency electrical transmission lines
IPC: G01R27/06
Filed: 1951-10-24
Abstract: 702,357. High frequency transmission lines. BIRD ELECTRONIC CORPORATION. Oct. 24, 1951 [Oct. 24, 1950], No. 24826/51. Class 40 (8). [Also in Group XXXVI] A high frequency transmission line including two conductors 1 and 2, which produce an electrostatic field around conductor 1, and a resistor R extending from the conductor 1 in the direction of the field, this resistor being insensitive to frequency changes and being substantially free from distributed capacitance effects. The resistor R preferably comprises a carbon film on a ceramic rod. In the arrangement shown the conductor 1 forms part of a coaxial line 2 connecting a generator to a non-reflecting terminal T constructed as described in Specification 641,607. Resistor R forms part of means for tapping off energy from line 2 and is connected to the inner conductor 9 of a branch line S. The latter is terminated by a resistance section 16 on the central conductor connected by a horn shaped diaphragm 22 to the outer conductor. A voltage is set up across resistance 16 proportional to the transmission in line 2 and this is measured by connecting a condenser 31 and a rectifier C across resistance 16. The voltage built up in condenser 31 is measured by a galvanometer G which is connected across condenser 31 in series with a resistance 32 and in parallel with a condenser 30.
Patent GB-425225-A (GB)
Title: An improved holder for electrodes for use in electric arc welding
IPC: B23K9/28
Filed: 1933-09-07
Abstract: 425,225. Retractive switches. CHARLES, W., 233, Manchester Road, Cubitt Town, London. Sept. 7, 1933, Nos. 24839 and 29918. [Class 38 (v)] [See also Group XI] A welding electrode holder is provided with a switch formed of a sliding contact 10 and a fixed contact 7. The contact is mounted on a spring 22 in a sliding tube 13 connected to a pin 20 operated by a lever 19. When the holder contains no electrode in the nozzle 4 and the lever 19 is released a spring 14 carries the tube 13 and pin 20 to the left of the drawing and causes contact to be broken between contacts 7 and 10. Contact 10 is carried by a pin 12 which has a projection working in a spiral slot in tube 13 to cause a rotary rubbing motion when the contacts move in order to keep their surfaces clean.
Patent GB-989558-A (GB)
Title: Improvements in or relating to heat insulated storage rooms
IPC: F25D23/02
Filed: 1962-06-29
Abstract: 989,558. Refrigerating. BANAN-KOMPANIEL A.B. June 29, 1962 [June 30, 1961], No. 25013/62. Heading F4H. The vertical boundary walls 1 of a cold storage room consist of flexible heat insulating material and are provided with pull ropes 6 which are attached to a tubular framework at the lower edges of the walls and which pass over pulleys 7 to a common winding mechanism. Operation of the pull ropes 6 causes the wall to fold upwardly (Fig. 2, not shown) providing access around the entire periphery of the room. The structure is intended for use in a larger surrounding storage space so that the ceiling and floor of the cold storage room are those of the storage space, a framework 12 attached to the ceiling carrying the walls 1, the pulleys 7 and a refrigerating unit 11. Alternatively the structure may be provided with its own heat-insulating ceiling. The whole unit may be made movable, for example, by suspending it from tracks fixed to the ceiling of the storage space. The walls consist (Fig. 3, not shown) of a layer of cellular plastic material sandwiched between an inner canvas surface and an external impervious surface layer of plastic material.
Patent GB-1347460-A (GB)
Title: Process for manufacturing chromium-containing azo dyes
IPC: C09B45/16
Filed: 1972-05-26
Abstract: 1347460 Chromium complexes of monoazo dyes NIPPON KAYAKU KK 26 May 1972 [29 May 1971] 25113/72 Heading C4P New metallized azo dyes of formula wherein one of the nuclei A, B, D and E is substituted by a sulphonic acid group, the nuclei A, B, C, D and E being optionally substituted by halogen atoms or NO 2 , methyl, ethyl, methoxy or ethoxy groups and M is an alkali metal or alkaline earth metal are prepared by reacting a 1 : 1-Cr complex of one dye with an equimolar proportion of the other. The dyes are used to colour natural and synthetic nitrogenous fibres, in particular wool, in yellow shades.
Patent GB-1280558-A (GB)
Title: Semi-trailer for a commercial road vehicle for transporting material in bulk
Inventor: TYSOE LIONEL EDWARD
IPC: B62D53/06
Filed: 1970-05-26
Abstract: 1280558 Semi-trailors CARMICHAEL & SONS (WORCESTER) Ltd 23 May 1971 [26 May 1970] 25144/70 Heading B7B A semi-trailer comprises a frame 11 with main and forward horizontal portions 12, 14 joined by a portion 13 inclined upwardly to the forward portion, a storage tank 16 supported on a sub-frame 17 which may be tipped; the tank 16 and sub-frame 17 following the contours of the frame 11. The tank is tipped about a pivot 29 at the rear of the frame by a jack 31 arranged at the forward end between pivots 32, 33 on the frame and sub frame respectively. A compressed air supply 35 enables material, such as sugar, to be discharged through outlet valve 30. The tank and sub frame may be fabricated from aluminium sheet welded together.
Patent GB-503960-A (GB)
Title: Improvements relating to spools for cinematograph films
IPC: G03B21/32
Filed: 1938-09-12
Abstract: 503,960. Locks. BUDAPESTI KRETA, VEGYESZETIGYAR ES KERESKEDELMI R. T. July 14, 1937, No. 19500. Void. Convention date, July 16, 1936. [Class 44] A safety lock comprises an ordinary keyoperated bolt 1 (shown as having two limbs 1a, 1b) and a safety bolt 7 controlled by members 20 freely pivoted on a fixed guide pin 6 which is engaged in a slot in the tail of the ordinary bolt. The tail of bolt 7 is bifurcated as seen in plan, Fig. 2 to embrace the tail of bolt 1, and a member 20 is provided at each side of said tail: The lower edge of bolt 1 has the usual recesses 9, 10 for co-operation with the key bit in shooting the bolt, whilst the upper edges of both bolts have teeth 15, 16 engaged by a spring tumbler 14 releasable by the key. The lower edge of member 20 has recesses 21, 22, recess 22 normally registering with recess 9 as shown. The upper edge of member 20 has recesses 24, 25 co-operating with pins 17, 18 on the tail of bolt 7. The arrangement is such that the correct key operates bolt 1, but clears members 20. An incorrect key, however, if used to retract bolt 1, also rocks one or both of the members 20 so as to shoot bolt 7 as bolt 1 retracts. If so shot, bolt 7 is held in shot position and can only be retracted by the correct key after first shooting bolt 1, so that indication is given that the lock has been tampered with. A modification is described in which the safety bolt is disposed above the ordinary bolt.
Patent GB-286562-A (GB)
Title: Improvements in fuses for armour plate piercing shells or the like projectiles
IPC: F42C15/24
Filed: 1927-09-24
Abstract: 286,562. Aktiebolaget Bofors. Aug. 9, 1927, [Convention date]. Projectile fuzes.-Relates to delay-action percussion fuzes for armour-piercing shells comprising a spring which is initially compressed, and which is so arranged as to throw a needle-holder backwards against a detonator cap when the retardation due to impact of the projectile with the target has sufficiently diminished. According to the invention, means are provided, for avoiding missfiring, whereby the backward throw of the firing pin occurs suddenly. In the fuze shown, the needle-holder 7, which contains a compressed spring 8, is normally locked by a ball 10, held within the body 3 by a sleeve 4; this is retained by a sleeve 6 and spring 5. When the shell is discharged, the sleeve 6 moves backwards over the spring 5, and on impact the parts 5, 6 move forward together, against the action of a weak spring 9, the ball 10 then passing out of its seating, and releasing the member 7. The spring 8 tends to throw the part 7 back against the cap 12, but this action cannot occur until the force due to inertia of the holder 7 has diminished to a certain extent. By this means penetration of the armour-plate occurs before the cap is fired. To allow of a sudden action of the spring 8, the member 7 is acted upon by a string 11 or the equivalent which is weaker than the spring 8; by breaking under a predetermined strain, it ensures that the firing pin does not meet the cap 12 slowly,
Patent GB-789623-A (GB)
Title: Folding chairs
IPC: A47C4/40
Filed: 1955-09-02
Abstract: 789,623. Folding chairs. MOTT, G. W. Aug. 31, 1956 [Sept. 2, 1955], No. 25343/55. Class 52(2) A folding chair has two pairs of leg members 11, 12 pivoted at their mid points 13 and connected to transverse braces 14, 15, the upper part of each leg 11 having notches 16, 17, 18 with which a pin 33 mounted on a link 31 pivotally secured to -the rear of one of a pair of strut members 19 may engage, the struts 19 being pivoted to legs 12 and members 26 which are pivotally connected in turn to the seat members 25. Back members 21 are pivoted on the pins and are pivotally connected at their lower ends to the seat members 25. Canvas 24, 28 is stretched between the members 21, 25 respectively or the canvas may be replaced by upholstery. The weight of the occupant urges pin 33 into engagement with a notch but the chair is so formed that the combined length of members 25, 26 is slightly less than the combined length of member 19 measured to pin 33 and the part of member 21 below pin 33 so that when the top of the chairback is pushed forward link 31 pivots forwardly and pin 33 is disengaged from its notch to allow adjustment or folding of the chair.
Patent GB-443782-A (GB)
Title: Improvements in or relating to water-softening reagents and methods of making the same
IPC: C02F5/08
Filed: 1935-09-03
Abstract: Anhydrous sodium or other alkali metal metaphosphate or pyrophosphate or mixtures thereof are formed into amorphous flakes having a thickness of ,01 of an inch or less for use in softening water.  The flakes may be formed by passing the fused material between smooth rapidly rotating rollers which may be cooled by circulating water or steam to such a degree only that the flakes are not completely solidified in contact with the rollers.  Alternatively, the flakes may be cooled by blowing gas against them as they leave the rollers.ALSO:Anhydroxy sodium or other alkali metal metaphosphate or pyrophosphate or mixtures thereof are formed into amorphous flakes having a thickness of ,01 of an inch or less for use in softening water.  The flakes may be formed by passing the fused material between smooth rapidly rotating rollers which may be cooled by circulating water or steam to such a degree only that the flakes are not completely solidified in contact with the rollers. Alternatively, the flakes may be cooled by blowing gas against them as they leave the rollers.  The efficiency of the flakes for water-softening purposes may be enhanced by the addition of alkali-metal salts such as sodium carbonate or tri-sodium ortho-phosphate.  Anhydrous alkali-metal salt in powdered form may be mixed with the flakes and the mixture sprayed with water in amount sufficient to partially hydrate the salt.  In this way flakes are produced having on their surface minute crystals of the added salt. Alternatively flakes may be sprayed with water and then dusted with the powdered salt or they may be sprayed with a solution of the salt in its water of crystallization.
Patent GB-896243-A (GB)
Title: Improvements in or relating to hose couplings
IPC: F16L33/24
Filed: 1959-07-24
Abstract: 896,243. Hose couplings. LUNDQUIST, B. A. July 24, 1959 [Aug. 8, 1958], No. 25492/59. Class 99(1). A coupling for flexible hoses comprises a nipple 1 having an externally expanded portion 2 insertable into a hose end 4, and a frusto-conical sleeve 5 displaceable along the nipple to clamp the hose against the nipple ,the sleeve being provided with internal screw-threads formed directly in the material of the sleeve, by a process such as rolling, and for forming corresponding threads on the exterior of the hose so as to force the sleeve towards the end 5 of the nipple when the sleeve is screwed in one direction along the hose with the larger end of the sleeve leading; the sleeve is, due to the rolling operation, also formed with external screw-threads.
Patent GB-462904-A (GB)
Title: Improvements in spars for the wings of aircraft
IPC: B64C3/18
Filed: 1935-09-14
Abstract: 462,904. Aircraft wing spars. VOGT, R. Sept. 14, 1935, No. 25569. [Class 4] A conical tubular spar a, Figs. 1 and 2, tor single-spar aircraft wings consists of two approximately semicircular shells d, the abutting edges of which are overlapped by cover strips e. Shells d are of uniform thickness, but the breadth of strips e is varied along the span. In a modification, Fig. 3, shells g rolled into the sections shown from sheet metal are welded together along the neutral plane of the spar. The spars may be employed as fuel containers.
Patent GB-581115-A (GB)
Title: Process for the manufacture of alkyl sulphates
IPC: C07C303/24
Filed: 1944-12-20
Abstract: Alkyl sulphates wherein the alkyl radical contains not more than four carbon atoms are prepared by heating sulphuric acid with an aliphatic alcohol containing not more than four carbon atoms, preferably at a temperature of about 80 DEG  to 120 DEG  C., passing a stream of an inert gas into and through the reaction mixture to entrain in the vapour phase water and alkyl sulphate formed by the reaction, removing the issuing gas stream laden with water and alkyl sulphate vapours and recovering the alkyl sulphate from the gas.  The process may be carried out in a continuous manner in a system involving a reaction vessel interconnected with a condenser, a receiver and a gas pump, by continuously or intermittently introducing into the reaction vessel sulphuric acid and the aliphatic alcohol, heating the mixture therein to a temperature between 80 DEG  and 120 DEG  C., continuously injecting a stream of an inert gas into and through the reaction mass and continuously moving the issuing gas stream laden with water and alkyl sulphate vapours into the condenser where the water and alkyl sulphate condense, whereupon the gas stream is reinjected into the reaction mass, the pump recirculating the stream of gas through the system to thereby continuously remove the water and alkyl sulphate formed.  The condensate in the receiver forms two layers, whereby the alkyl sulphate may be separated and recovered; the water layer containing some ethyl hydrogen sulphate may be concentrated and returned to the reaction vessel.  Preferably, the reaction is commenced and maintained with the sulphuric acid in excess of molecular proportions, for example an initial ratio of between 2 : 1 and 1 : 1 is suitable, followed by addition of alcohol and acid in a 2 : 1 ratio to balance the consumption in the reaction. Methyl and ethyl alcohol are preferably reacted at a temperature of 100 DEG  to 105 DEG  C. and the propyl and butyl alcohols at 90 DEG to 95 DEG  C.  Inert gases specified are air, carbon dioxide, hydrogen and nitrogen.  Examples illustrate the preparation of ethyl sulphate and methyl sulphate by the continuous method described above.
Patent GB-670676-A (GB)
Title: Improvements in or relating to a flexible abrasive disc of the coated abrasive type and method of making the same
IPC: B24D13/14
Filed: 1949-10-05
Abstract: 670,676. Coated flexible fabrics. MINNESOTA MINING & MANUFACTURING CO. Oct. 5, 1949 [Nov. 17, 1948], No. 25596/49. Drawings to Specification. Class 60. [Also in Group VIII] A coated flexible abrasive disc comprises a water-absorbent cellulosic sheet backing, a layer of abrasive grains adhesively attached to one side of the backing and a foraminous non-hygroscopic sheet adhesively attached to the other side of the backing and having sufficient tensile strength to resist the tendency of the disc to curl when the cellulosic sheet absorbs moisture and sufficient flexibility to allow the disc to be bent when applied to a workpiece. The non- hygroscopic material may comprise a perforated aluminium, copper or tin sheet or a woven wire mesh. The adhesive securing the perforated sheet to the cellulosic sheet may be a phenolaldehyde, urea-aldehyde or resorcinol-aldehyde resin. The cellulosic material may be vulcanised fibre, paper or cloth, or a combination of paper or cloth sheets. The abrasive grains may be secured to the adhesive sheet by a synthetic resin adhesive, or by glue with a phenol-aldehyde sizing coat applied over the grains and glue. Reference has been directed by the Comptroller to Specification 510,330.