baber/WOPTO huggingface dataset:
Patent GB-853220-A (GB)
Title: Process and apparatus for the preparation of urea from ammonia and carbon dioxide
IPC: C07C239/00
Filed: 1959-07-29
Abstract: In the preparation of urea by synthesis from NH3 and CO2, the reaction mixture issuing from the synthesis vessel is expanded to a pressure of 10-45 atmospheres and is subjected, at that pressure and at a temperature sufficient to decompose the ammonium carbamate, to stripping by means of a counter-current flow of an inert gas, the gases spontaneously evolved in the expansion and those stripped by the inert gas are processed at 10-45 atmospheres to produce liquid ammonia and a concentrated ammonium carbamate solution, which are recycled to the synthesis. Preferably the gases are passed through ammonia solution to remove CO2 and produce a concentrated ammoniacal ammonium carbamate solution, the unabsorbed gas is cooled to condense NH3 and then washed with water to provide inert gas for re-use in the stripping treatment, and an ammoniacal solution, at least part of which, together with part of the previously condensed NH3, is used for CO2 removal ; the concentrated ammoniacal ammonium carbamate solution and the liquid NH3 are fed back into the synthesis.  The invention also comprises apparatus suitable for this preferred method of carrying out the synthesis.
Patent GB-817276-A (GB)
Title: Pneumatic gear-shift device for change-speed gears
IPC: F16D25/0638
Filed: 1955-09-12
Abstract: 817,276. Gearing for stopping and starting machinery; clutches; change-speed gear. MOOSMANN, A. Sept. 12, 1955 [Sept. 13, 1954], No. 26090/55. Class 80 (2).  In a pneumatic gearshift for a change-speed gear, a diaphragm or equivalent is interposed between the air supplies for a pneumatic friction clutch and a pneumatic friction brake to prevent engagement of one before disengagement of the other. A gear 1 transmits the drive through a friction clutch 2, engaged against pressure of a spring 21 by a pneumatic cylinder and piston 3, to a gear 4 on a shaft 6. The shaft 6 carries a second gear 7 and a pneumatically engaged friction brake 16. The gears 4, 7 engage gears 5, 8 clutchable by sliding dog sleeve 10 to an output shaft 9. The sleeve 10 is moved axially by a shift rod 11 and pneumatic piston 12 to selectively engage either gear. Air for the operation of the clutch 2, brake 16 and piston 12 is admitted through connections 23, 18, and 14, 15, respectively. The change-speed gear is controlled from a programme controller of the type described in Specification 813,381, [Group XXII]. For engagement of clutch 2 air from the controller passes to connection 24 in the shift device, Fig. 2, through a change-over device 25 and bore 26 to a diaphragm chamber 28, thence to a restrictor nozzle 30 and non-return valve 31, closed for the passage of air in that direction, to a bore 35 connected with connection 23. The bore 35 is also in communication with the diaphragm chamber of an impulse-valve 39 which provides a completion of engagement signal to the controller. Engagement of the brake is provided. by air pressure to bore 41 and venting of connection 24. Pressure frombore 41 passes to a restrictor nozzle 43 and non- return valve 44 and thence to bore 45 which is closed by the diaphragm 27 until the pressure in the clutch system has bled away to release pressure in chamber 26. When the bore 45 is opened pressure flows through diaphragm chamber 46 to bore 47 and thence to brake connection 18. An impulse valve 53 signals completion of the brake engagement, and the driven machine can either remain braked or a change of speed be initiated by the programme controller. Combination of the strength of the clutch and brake disengaging spring with the strength of the springs in the non-return valves provides a rapid drop in pressure for the first phase and a slow drop, with continued holding by the diaphragm 27, for the fmal phase of clutch and brake release, and prevents engagement of clutch and brake simultaneously. To prevent the transmission of high torques at low speeds the controller may direct air pressure for clutch engagement to connection 54 under such conditions, from this connection the air passes through a reducing valve 55 to passage 62 and the change-over device 25 then closes bore 24 and passes air to bore 26 for the clutch engagement to function normally at reduced pressure, and thus limit the torque transmitted by the clutch 2.
Patent GB-152987-A (GB)
Title: Machine for building tyres
IPC: B29D30/14
Filed: 1920-09-10
Abstract: 152,987. Goodyear Tire & Rubber Co., (Assignees of Trogner, R. S.). Oct. 23, 1919, [Convention date]. Tyres, elastic, special apparatus for making.- In a tyre-making machine, the relative to-andfro motions between the core and the carriage supporting the fabric-manipulating devices are effected by gravity. In the machine shown in Fig. 2, the carriage 14 is slidably mounted on antifriction rolls 16 on a rocking frame 13 which can be swung towards and from the core 10. The frame 13 is rocked about its supporting-shaft 18 by an eccentric 20 on a shaft 21 fitted with a hand-wheel 23. For damping the approach of the carriage to the core, a piston 25 and dash-pot 24 are provided as shown. In a modification, the return movement of the frame 13 is effected by a solenoid the circuit of which is closed automatically at the end of the forward movement. Fig. 5 shows a modification in which the frame 13 is actuated in both directions by solenoids 29, 30 controlled by switches 33. The end-walls 32 of the roller-track 28 form positive stops for each movement. In the arrangement shown in Fig. 7, the frame 13 is suspended from a pivoted bracket 40 having a slot 42 in which a roller 41 on the frame is adapted to travel. The bracket 40 is manipulated to determine the to-and-fro motions of the frame 13 by a hand-lever 43'. For maintaining the frame 13 in an upright position, a roller carriage 44, constrained in a fixed guideway 46, has spring-pressed blocks 47 sliding in slots 48 in the frame. Fig. 8 shows a further modification in which the core 50 is reciprocated with respect to a fixed carriage 51. The core is slidably mounted on a support 53 which is tilted about the shaft 54 by solenoids 56, 57. A dashpot 58 is fitted as shown.
Patent GB-1274016-A (GB)
Title: Extraction of nucleic acid from activated sludge
IPC: A61K31/70
Filed: 1969-05-22
Abstract: 1,274,016. Nucleic acids. KURITA WATER INDUSTRIES Ltd. 22 May, 1969 [30 May, 1968], No, 26141/69. Heading C3H. In a method of obtaining nucleic acids from activated sludge, the acids are extracted by treating the sludge with an aqueous solution of a chelating agent and separated from the extract by precipitation. The chelating agent may be an aminopolycarboxylic acid or an aminopolyphosphonic acid; EDTA, nitrilotriacetic acid and amino trimethylphosphonic acid are preferred. The precipitant may be aqueous methanol or acetone; the sludge may be given a preliminary extraction with these solvents to remove protein. Alternatively the acids may be precipitated by HCl.
Patent GB-980254-A (GB)
Title: Improvements in or relating to the treatment of timber
Inventor: JOLLES ZVI ENRICO
IPC: B27K3/40
Filed: 1961-07-20
Abstract: Wood is proofed against fungi by treatment with a solution, emulsion, or suspension containing 0.2-1.5% of tribromophenol, as such or as the lithium, sodium, potassium, copper, or zinc salt.  2,3,4-, 2,3,5-, 2,4,5-, 2,4,6-, or 3,4,5-tribromophenol may be employed.  An aqueous solution of an alkali metal salt having a pH of less than 8 may contain borax as a buffer.  Tribromophenol or its copper or zinc salt may be dissolved in white spirit (a petroleum fraction having a boiling range of 152-204 DEG  C.) or an aromatic petroleum fraction having a boiling range of 190-270 DEG  C. and containing at least 80% of aromatic compounds.  The solution may form an emulsion with water. Copper or zinc tribromophenate may be formed in situ in the wood by separate treatment with tribromophenol and copper or zinc naphthenate or oleate, or by separate treatment with alkali metal tribromophenate and copper or zinc sulphate.  An aqueous solution may contain "Teepol" (Registered Trade Mark) and an emulsion may contain "Lissopol" (Registered Trade Mark) or "Tensiofix" as surface active agents. "BHC," "Aldrin," or "Dieldrin" may be present as insecticides.
Patent GB-1270043-A (GB)
Title: Improvements in or relating to rollers
IPC: D21F3/08
Filed: 1970-06-01
Abstract: 1,270,043. Rollers. A. AHLSTROM OSAKEYHTIO. 1 June, 1970 [4 June, 1969], No. 26328/70. Heading F2U. In order to give uniform lengthwise pressure distribution a roller comprises an outer shell 1 secured to a drive shaft 3 over its central region and subjected to transverse loading at one or more points along its free portions. As shown the loading is provided by bearings 5 between the shell and shaft, and incorporating eccentric loading rings 6, 7 adjustable by a motor 17 through gearing 12, 14. Alternatively the bearings may be subjected to hydraulic loading, Fig. 9 (not shown). In a further arrangement, Fig. 7 (not shown), the exterior surface of the shell is engaged by hydraulically loaded bearings.
Patent GB-1373699-A (GB)
Title: Apparatus for automatic changing of reels in a spooler for wire products
IPC: B65H67/052
Filed: 1972-06-06
Abstract: 1373699 Supplying and collecting reels to and from spooling machines OY NOKIA AB 6 June 1972 [7 June 1971] 26340/72 Heading D1F In the operation of apparatus automatically loading and unloading reels in a (double) spooling machine alternately at one side whilst winding proceeds on the other side, at the beginning of each cycle a wheeled carriage 9 mounting empty reels 32, 33, is pushed on and to the end of track rails 10 so that a hook 20 of the transfer mechanism engages with a hook 21 on the carriage, a slide 19 is moved. slightly thereby, a peg 34 thereon presses a limit switch 35 to cause a central control (not shown) to feed pressure fluid into cylinder 27 of a lifting device 16. Piston shaft 28 thus moves arm 26 to raise reel 32 to the position shown in Figure 6 and push it onto slightly inclined plate 36 of a rolling platform 31 whence it rolls towards the centre of the spooling position and onto a U-beam 46 whereat it operates a limit switch 50 to initiate those elements (not shown) of the spooling machine which engage the reel on the spooling shaft, start rotation of the shaft and cause the changeover of spooling to their new reel When the spool is filled, pressure fluid is directed to cylinder 47 so that shaft 48 pulls arm 43 (anticlockwise as shown) causing it to lift plate 39 and the U-beam together with reel 32 by means of screw 45. The reel, transferred to plate 39 which is now slightly inclined in the opposite sense, rolls thereon and falls into position on carriage, meanwhile pushing arm 26 into its lowered position. A limit switch (not shown) initiates a signal to piston shaft 24 to withdraw into cylinder 23 until peg 34 engages limit switch 51 to. arrest the movement. The carriage has thus been moved a distance equivalent to the width of one reel so that empty reel 33 is in position opposite exchange opening 4. When reel 33 has been filled and also transferred to the carriage, locking device 20, 21, is opened and carriage removed from the track to be replaced by a new carriage with empty reels.
Patent GB-374727-A (GB)
Title: Improvements in or relating to systems employing isolating switches for operating power switches
IPC: H01H33/12
Filed: 1931-09-21
Abstract: 374,727. High - tension switches : switchgear structures. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Sept. 21, 1931, No. 26358. Convention date, Oct. 2, 1930. [Class 38 (v).] Pneumatic actuation.-A power switch 2 is operated through the movable member 8 of a seriesconnected isolating switch when the latter is in its closed position, the power switch being, for instance, a compressed gas-operated, expansion, or hydraulically-operated switch. Over the power switch is a casing 5 containing a ratchet-and-pawl drive, the spindle 6 of which has a tongue 7 adapted to be engaged by recesses in the end of the member 8 when the latter has been moved from the dotted to the full-line position shown in Fig. 2. The member 8 is rotatable about its axis in a bearing-block 10 which in turn is rotatable about a pin 11 on the support 12. The latter is rotatable through gearing 23 by a crank 24 and moves the member 8 into engagement with the spindle 6, further rotation about the pin 11 being prevented. However the bevel wheel 13 on the member 8 rolls on the segment 14 on the support 12 as the latter is further rotated, such rolling causing the member 8 to rotate about its own axis through 90, therebv closing the power switch 2. In this position, the power-switch is held closed by the ratchet mechanism and member 8 cannot be moved to the open position owing to the coupling at 7. When, however, the ratchet mechanism is tripped, for instance by an overload relay, and opens, an energy device 25, which has been charged by the closing movement of the isolating switch, first acts on the member 8 to rotate and uncouple it at 7 and then returns it to the open position. Alternatively, compressed air or liquid may be supplied through the member 8 to actuate the switch 2. Where two power switches in series control a circuit, or two power switches are connected to duplicate bus-bars, a single isolating switch is used to actuate both, or the appropriate power switch.
Patent GB-532851-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/04
Filed: 1939-09-22
Abstract: 532,851. Photographic roll-film cameras. KODAK, Ltd. Sept. 22, 1939, No. 26422. Convention date, Sept. 23, 1938. [Class 98 (i)] In a roll-film camera in which the back 24 is removed from the body by sliding it laterally, and carrie's a guide or plate 35 co-operating with the exposure frame to hold the film in the focal plane, the guide is moved to and from its operative position by the actuation of a latching device for the camera back. In the camera shown, the back 24, Figs. 2 and 3, carries the bottom wall 25 and slides laterally on to and from the body portion 10, Fig. 1, which carries the top wall 13. Tongues 27 on the forwardly curved ends of the back wall engage in grooves 15 in the rearwardly curved ends of the body. A reduced portion 28 at the free edge of the back wall engages under a metal rim 29 round the edge of the top wall 13, and a metal channel 30 round the edge of the bottom wall receives a tongue 31 round the edge of the front wall 14. The back is locked by rotating a stud 53 carrying a cross-piece 57, which in the locking position engages beneath resilient fingers 52 on a plate 50. In the unlocked position, a cam 60 on the stud 53 depresses a lever 42 to which is pivoted a bow spring 36 carrying the plate 35, which is thus withdrawn from contact with the film and does not foul it when the back is being slid into position. In operative position the plate 35 bears on the end of the exposure frame 16, in which is a groove for the film, so that the film is not subjected to pressure by the plate.
Patent GB-1279843-A (GB)
Title: Benzamidoethyl-piperazines and process for their preparation
Inventor: REGNIER GILBERT
IPC: C07D239/42
Filed: 1969-05-23
Abstract: 1279843 Piperazine derivatives SCIENCE UNION ET CIE SOC FRANCAISE DE RECHERCHE MEDICALE 26 May 1970 [23 May 1969] 26437/69 Heading C2C The invention comprises novel piperazine derivatives of the Formula I: wherein R 1  is H, C 1-4  alkoxy, NH 2  or C 1-4  acylamino ; R 2  is H, halogen, C 1-4  alkyl or NH 2 ; or R 1  and R 2  together are methylenedioxy; R 3  is H, halogen, C 1-4  alkoxy, OH or NH 2 ; R 4  is H, C 1-4  alkyl or C 2-4  alkenyl; and R 5  is (a) a radical of the formula in which n is 0 to 3; R is H, phenyl or halophenyl, and Y is H, halogen, C 1-4  alkoxy or methylenedioxy, (b) pyrimidyl or pyrazinyl; (c) 2- or 4-pyridyl of the formula or the corresponding N-oxides, in which R<SP>1</SP> is H, C 1-4  alkyl or C 1-4  alkoxy, and acid addition salts thereof. The above novel compounds are prepared by reacting benzoic acid derivatives of the formula wherein Z is C1 or OCOCH 2 CH 3 , R<SP>1</SP>1 is H, C 1-4  alkoxy, NO 2 , or C 1-4  acylamino, R<SP>1</SP> 2  is H, halogen, C 1-4  alkyl or NO 2 , or R<SP>1</SP> 1  and R<SP>1</SP> 2  together are methylenedioxy, R<SP>1</SP> 3  is H, halogen, C 1-4  alkoxy or NO 2 , with the appropriate piperazine derivatives and where R<SP>1</SP> 1  and/or R<SP>1</SP> 2  and/or R<SP>1</SP> 3  are NO 2 , reducing the thus obtained nitro compounds with hydrogen in the presence of a catalyst. Alternatively compounds of the above Formula I in which R 1  is acylamino may be obtained by the acylation of the corresponding compounds in which R 1  is NH 2 , and compounds in which R 1  is NH 2  by the hydrolysis of the corresponding compounds of Formula I in which R 1  is CH 3 CONH. 1 - Aminoethyl - 4 - (2 - pyridyl) - piperazine, 1 - aminoethyl - 4 - piperonyl - piperazine, and 1 - aminoethyl - 4 - (bis - p - fluorobemhydryl)- piperazine are prepared by reacting ethyleneimine with 1 - (2 - pyridyl) - piperazine hydrochloride 1 - piperonylpiperazine and 1- (bis - p - fluorobenzhydryl) - piperazine respectively. Pharmaceutical compositions, having broncholytic, anti-anaphylactic and gastric anti-secretory properties, contain the above novel compounds or acid addition salts thereof, in admixture or conjunction with pharmaceutically suitable carriers. The compositions are in forms suitable for oral, parenteral or rectal administration.
Patent GB-518247-A (GB)
Title: Improvements in closures for bottles and containers for perfumery and toilet articles
IPC: A45D34/00
Filed: 1938-09-10
Abstract: 518,247. Closures for perfume bottles. SLACK, H. F., and DUBARRY PERFUMERY CO., Ltd. Sept. 10, 1938, No. 26452. [Class 125 (iii)] Moulded or metal caps for perfume bottles or jars are provided with ornaments of glass, china, porcelain, celluloid or moulded plastic material. The base b of the ornament a may be fixed to the top of the cap c by adhesive. Alternatively it is formed with a peg e secured by adhesive in the recess f. The peg e is grooved at g to assist in retention. In a modification the peg e is screwed into the recess f. The latter may be made conical.
Patent GB-697915-A (GB)
Title: Improvements in ladles for gas flushing molten metal
IPC: B22D1/00
Filed: 1950-10-30
Abstract: 697,915. Ladles for the pneumatic treatment of molten metal. SOC. L'AIR LIQUIDE, SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE. Oct. 30, 1950 [Nov. 3, 1949], No. 26453/50. Classes 72 and 82(i) In a ladle for gas flushing molten metal, as described in Specification 671,678, the side surface of the plug is wholly coated with a metallic coating impervious to gases to prevent leakage. The metal coating may be in the form of a stamped metal shell into which a pre-formed plug is cemented or which acts as a mould for materials which bind together without fixing. In the latter case, the metal shell 6 is bound both with the refractory plug, e.g. by a spider 10, 12, Fig. 3, or by corrugations 15, Fig. 4, and with the ladle by screws 13. Some of the components of the plug may react with the metal shell and form cementing compounds. The metal coating may be sprayed on. In one form of ladle, Fig. 9, the plug 800 having its smaller base in contact with the molten metal has a metallic coating 802 and is secured to the part- 804 by a spider 820 and a screw 826. The part 804, which has a cover 818 thus forming a blast box, is secured to the metallic housing 828 of the ladle by bolts 894. The metal part 804 is only continued to a posi-. tion adjacent the surface of the ladle lining in contact with the molten metal bath.
Patent GB-506028-A (GB)
Title: Improvements in or relating to electrodes for use as anodes in the electro-deposition of metal on the internal surfaces of cylinders
IPC: C25D17/12
Filed: 1937-11-19
Abstract: 506,028. Anodes for electroplating. LISTER & CO., Ltd., R. A., and VASSEUR, H. F. Nov. 19, 1937, No. 26487/38. Divided out of 506,043. [Class 41] An anode for use in plating the internal surface of a cylinder 10 comprises a set of curved bars 5 detachably secured to one or more supports, such as rings 2, 3 to form a substantially cylindrical surface, the bars being of such width in proportion to their curvature that they may be employed to form a cylinder of different diameter by attachment to supports of. corresponding size, if necessary with addition or removal of bars. The bars are preferably spaced to form gaps, and are reduced in diameter at the points of attachment to the rings. The ring 2 is secured to a cylindrical head 1 provided with gaps 4 for the escape of gas.
Patent GB-209151-A (GB)
Title: Improvements in or relating to shuttle box swells in looms for weaving
IPC: D03D49/52
Filed: 1922-10-02
Abstract: 209,151. Nelson, J'. Oct. 2, 1922. Checking shuttles.-A shuttle box swell 4 pivoted at 6 has a counterweight 9 which does not come in contact with the shuttle but which balances the movement imparted to the swell by the sley. The counterweights may be of the form shown dotted at 10 or may be a plain bar 9.
Patent GB-1492688-A (GB)
Title: Enzyme-containing denture cleanser tablet
IPC: A61K8/22
Filed: 1975-06-23
Abstract: 1492688 Enzyme containing denture cleanser tablet JOHNSON & JOHNSON 23 June 1975 [24 June 1974] 26554/75 Heading C5D A water-soluble effervescent layered denture cleanser tablet comprises (A) a layer containing an enzyme in an effervescent-producing (E.P) composition and (B) a layer containing an active oxygen compound in an effervescence-producing composition; the enzyme layer being faster dissolving in water than the active oxygen layer. The E.P. composition consists of a mixture of an acid in powder or granular form (e.g. citric and/or tartaric acid, sodium or potassium acid phosphate, gluconic acid and malic acid) with an alkali metal carbonate or bicarbonate The enzyme may be a protiase, alkalase, amylase lipase, dextranase or mutanase. The active oxygen compound may be sodium perborate monohydrate, potassium persulphate, sodium carbonate peroxide, diperisophthalic acid or potassium peroxydiphosphate. Each layer contains an antifoaming agent, e.g. dimethylpolysiloxane, a water-soluble binder, e.g. polyvinylpyrrolidone and a water-soluble lubricant, e.g. magnesium lauryl sulphate. The enzyme layer may contain a dye and flavour whereas the active oxygen layer preferably contains a surfactant especially sodium lauryl sulphoacetate. Faster dissolving of the enzyme layer is obtained by formulating the tablet so that (a) the enzyme layer contains 75 to 90% of the E.P. composition, 30-50% fines (i.e. powder not greater than 177 microns, i.e. passing No. 80 screen) and is 30 to 35% of the total tablet (b) the active oxygen layer contains 30 to 40% of the E.P. composition, 20 to 30% by wt. of fines and is 70 to 65% of the total tablet.
Patent GB-232166-A (GB)
Title: Improvements in variable electric condensers
Filed: 1924-11-07
Abstract: 232,166. Barnhart, J. R. April 9, 1924, [Convention date]. Condensers. - A small capacity variable condenser suitable for use as a grid condenser or for neutralizing capacity coupling in wireless circuits comprises an insulating base 1 upon which is mounted by means of eyelets 2, which serve also as terminals, a pair of spaced plate elements 3 between which and the base is rotatably mounted. a conducting element 11 having oppositely extending sectors which may be caused to overlap the fixed plates 3 to a variable extent. Dielectricmaterial 8, spaced from the base by packing strips 7, is interposed between the elements 3, 11, the latter having a raised centre portion projecting through the sheet of dielectric and being slotted at 12 to enable the movable element to be rotated by a screwdriver.