baber/WOPTO huggingface dataset:
Patent GB-1371790-A (GB)
Title: Production of hydrogen fluoride
IPC: C01B33/10
Filed: 1972-01-25
Abstract: 1371790 Hydrogen fluoride preparation BAYER AG 25 Jan 1972 [26 Jan 1971] 3382/72 Heading C1A HF and a by-product metal sulphate are prepared by (a) pre-heating a solid metal fluoride, e.g. ÀCaF2 or NaSiF6, in a gaseous suspension having a solid/gas conen. of 0À2-4 kg./Nm.<3> to a temp. of 500-800‹ C. and then (b) reacting the pre-heated fluoride with H2SO4 at a temp. of 100-500‹ C. The fluoride may have a ptle. size of 40-250 Á and contain basic additives, e.g. NaOH, KOH, Na2CO3 or K2CO3, in amounts up to 20 mole per cent added before or after the pre-heat treatment to increase the exothermicity of the subsequent acid reaction. The fluoride may be heated in countercurrent by burning carbonaceous materials. The H2SO4 may be added to the fluoride partly as SO3 or oleum either incrementally or in one step preferably outside the reaction furnace. In an embodiment of the process ground CaF2 is fed via 5 into heat exchanger 6 heated by hot combustion gases entering at 7 and exiting at 19, the heated fluoride is then removed from the exchanger at 10 and brought into contact with increments of H2SO4 supplied via 12, prior to being heated with the acid in the rotary furnace 13. Basic additives may be supplied either to the hot fluoride at 17 or to the cold fluoride at 18.
Patent GB-309260-A (GB)
Title: Improvements in or relating to windscreen wipers
IPC: B60S1/20
Filed: 1928-02-03
Abstract: 309,260. Dudley, W. Feb. 3, 1928. Windows and the like, cleaning.-In a windscreen cleaner of the type in which the wiper arm is secured to a slide, adapted to be reciprocated by means including an endless band or chain passing over pulleys or sprockets, slackness in the band or chain is taken up by spring means co-operating with a pawl and ratchet. In the construction shown, the housing 1<a> for the chain is provided with a plate 1 slotted to accommodate a box-shaped slide 4. The slide carries a sleeve 6 which forms a bearing for the driven sprocket, and also forms a bearing for a spring- pressed pawl 7 adapted to engage a screwed rod 8. A looped spring 1 passing round a peg on the plate 1 and round one end of the slide tends to keep the chain taut, the pawl and ratchet preventing backward movement of the slide. Specificaticn 273,902 is referred to.
Patent GB-828460-A (GB)
Title: Improvements in or relating to lift trucks
Inventor: CHAPMAN GEORGE WILLIAM ALLISTE
IPC: B66F9/10
Filed: 1957-01-31
Abstract: 828,460. Fork lift trucks. MATHEW Ltd., H. & L. Jan. 21, 1958 [Jan. 31, 1957], No. 3403/57. Class 78 (3). The telescopic mast structure of a fork lift truck is mounted on a pillar 1 which is rotatable in bearings 3, 4 by a ram 9. The mast is also tiltable about a pivot X by a ram 7. The vertically movable mast section 10 and carriage 12 can be lowered between the wheels 8 so that the forks are at ground level. The pillar 1 is arranged off - centre relative to the longitudinal axis of the truck.
Patent GB-1412389-A (GB)
Title: Partition assembly
IPC: E04B2/74
Filed: 1974-01-24
Abstract: 1412389 Partitions R THOMPSON 24 Jan 1974 03408/74 Heading E1W A partition with a free upper and lower edge comprises a post 12 with tubular ends, panels 14 respectively having vertical edges engaging the post, upper stringers 16 overlying the upper edges of the panels and interlocking at their ends with the upper tubular end of the post, the upper stringers being clamped to the post by a screw means 20 and lower stringers under the lower edges of the panels interlocking with and clamped to the post in the same way as the upper stringers. The lower screw clamping means may be provided with a screw threaded vertically adjustable foot. The panels may be curved and shelf supporting brackets may engage between adjacent panels hooking into apertures 86 in the posts.
Patent GB-216914-A (GB)
Title: Improvements in and connected with permutation switches applicable for use on motor road vehicles
IPC: H01H27/10
Filed: 1923-12-01
Abstract: 216,914. Willis, A. E., and Turton, W. Dec. 1, 1923. Secret contact combination switches ; switches without quick action. - A permutation switch, which can be used to prevent theft of a motor road vehicle, consists of a conducting drum c<4>, Fig. 2, fixed to a shalt, a drum e<13> formed on a. sleeve over the shaft, and a third drum e<16> on a second sleeve fitting over the first. One end of the shaft is fitted with a handle and indicator disc and the other end bears against a spring terminal e<6>. Spring terminals e<8>, e<9>, g, and h contact with the surfaces of the drums, which are provided with insulating strips e<5>, e<14>, e<17>. The sleeves c<12>, c<15>, Fig. 5, on which the drums e<13>, e<16> fit, are connected with the knob and disc e<3> by reversely operating clutches each comprising a spring pawl i carried by the disc and a ratchet tooth on the sleeve. In order to set the' permutation switch, the disc and knob must be revolved first in one direction, then in the reverse direction and then again in the first direction. The switch is in the set position when the insulating strips e<5>, e<14>, e<17> are against the terminals e<8>, g, h. The disc and knob may be differently set. on the shaft so that the combination may be changed. This permutation switch is combined in the same casing as an ignition switch which consists of a slidable shaft f<5>, Fig. 3, on which are mounted two couplers f<2>, f<3> spaced apart by an insulating ring f<4>. Resilient contact studs m, n operate with one or other of the couplers. The back of the casing containing the two switches is closed by a hood c<5>, which covers the connections of the lead-in wires. The switches are arranged in a circuit, Fig. 7, which includes an audible signalling device such as a horn s and a switch t which is closed when the bonnet of the engine is lifted or other moveable portion of the vehicle interfered with. If the permutation switch is in irregular order, as shown, and a hand-operated switch u is closed, movement of the ignition switch from the position shown to connect up the magneto at v, or closing of theswitch t, causes an alarm to be given.
Patent GB-670266-A (GB)
Title: Improvements in or relating to apparatus for washing or cleaning watch parts or likesmall articles
IPC: G04D3/08
Filed: 1949-02-09
Abstract: 670,266. Cleaning watch parts. NICHOLAS. H. G. May 9, 1950 [Feb. 9, 1949], No. 3544/49. Class 139. Apparatus for washing or cleaning watch or like small articles comprises a container for washing or cleaning liquid, a removable closure for the open upper end of the container, an electric motor mounted on the said closure and having a driving shaft extending down into the container, a carrier for the articles to be washed, which carrier is detachably engaged with the shaft so as to rotate therewith, a valve-controller outlet in the base of the container and electrically-operated means for maintaining the valve open when the motor is in operation. The container 10 has a cylindrical portion 11 with an open top, and a conical bottom 12 having a drain opening 26 in a block 28 secured to the bottom and closed by the valve 27 under action of gravity. The removable cover 13, is apertured at 14. The electric motor 15 carried by the cover 13 has a depending shaft 17 to which is secured a spider 19. Detachably secured to the spider 19 by a clamping ring 25 and bayonet connection, is a coarse mesh basket 20 within which is located a fine mesh tray 21 having divisions 22 over which is located a coarse mesh cover 23. The basket 20 is rotatable by the motor within baffles 11a formed in the container. The drain 26 communicates with a container 41 detachably located beneath a support 33 for the container 10. The container 41 is provided with a support 42 for a filter element 43 and a pouring opening 44. The valve 27 is raiseable by means of an electric solenoid 36. Secured to the block 28 is an electric heating element 34 and thermostat 35. In operation the container 11, 12 is filled with cleaning liquid to the level 10a, shown in dotted lines, the basket 20 with articles therein is inserted in the container and the electric supply switched on. The motor, heater and drain valve solenoid are thereby energised. As the cleaning proceeds the heated and fouled liquid passes the raised valve 27, through the drain 26, through the filter 43 to the container 41 where it remains until required for further use. When the container 11, 12 is empty traces of vapour escape from the container through the apertures 14 and air is drawn in to be heated and circulated to dry the articles. The thermostat 35 ensures that excessive heating of the articles is avoided. Firstly the apparatus is rendered inoperative by switching off the electric supply, the drain valve 27 then closing by gravity. The electric heater may be of the immersion type housed within the container 11, 12. Rheostatic control may be provided with the switch for the electric supply and a pilot light may also be provided to indicate that the heating circuit is closed.
Patent GB-539150-A (GB)
Title: Improvements relating to petrol and like tanks
IPC: B64D37/06
Filed: 1940-02-26
Abstract: 539,150. Rubber compositions. HUBRON RUBBER CHEMICALS, Ltd., and CURRAN, H. Feb. 26, 1940, No. 3562. [Class 70] [Also in Group XXIX] A petrol &c. tank is provided with means for automatic sealing of any perforation by a bullet &c. comprising a bag or layer of petrol-resisting synthetic rubber, such as that known as " Neoprene" (R.T.M.), tightly fitting, and, if desired, vulcanized to, the tank, a surrounding layer of soft deformable or plastic material or dough, and a further bag or layer of synthetic rubber similar to the first and under slight tension. The deformable material may comprise 100 parts by weight of raw masticated rubber mixed with 60 parts of pale spindle oil, and may be applied in sheets butt-jointed by localized pressure. A further layer of plastic material and an outer layer of highly extensible pure vulcanized rubber under slight tension may also be provided.
Patent GB-1201662-A (GB)
Title: Improvements in or relating to paraformaldehyde production
IPC: C08G2/08
Filed: 1968-01-23
Abstract: 1,201,662. Paraformaldehyde production. TENNECO CHEMICALS Inc. 23 Jan.; 1968 [1 Feb., 1967], No. 3601/68. Heading C3P. Paraformaldehyde is obtained by a process in which (a) an aqueous solution of formaldehyde is concentrated by heating, (b) the concentrated solution is heated to polymerize the formaldehyde, (c) the above steps (a) and (b) are repeated, and (d) the mixture is cooled and solidified to obtain the paraformaldehyde. Step (a) is carried out using a solution of 30 to 50% formaldehyde having a pH of 2 to 5, at a temperature of 140‹ to 200‹ C., a pressure of 75 to 150 mm. for 2 to 120 seconds, forming a solution containing 60 to 75% formaldehyde. Step (b) is carried out at 60‹ to 90‹ C. for 30 to 120 minutes. Step (a) is repeated to form a solution containing 82 to 88% formaldehyde. The repetition of step (b) is carried out at 100‹ to 140‹ C. at a pressure of 1 to 5 atmospheres for 1À5 to 4 hours.
Patent GB-1203844-A (GB)
Title: Improvements in or relating to means for attaching dust bags to vacuum cleaners
IPC: A47L9/14
Filed: 1968-01-24
Abstract: 1,203,844. Suction cleaners. PHILIPS GLOEILAMPENFABRIEKEN N.V. 24 Jan., 1968 [27 Jan., 1967], No. 3677/68. Heading A4F. [Also in Divisions B1-2] A vacuum-cleaner comprises a textile bag 4, having a rubber rim 3, 5 and enclosing a disposable crepe paper dust-bag 6, the open end 7 of bag 6 being threaded through and folded over the rim (Fig. 2 not shown), after which the removable cover 8-11 (Fig. 1, not shown) is fitted to the body 1 of the cleaner, bending frustoconical flange 5 of the rim into a U crosssection, so that flange 11 of the cover seals the bag 6 against flange 5, while flange 10 and the body 1 clamp the main part of the rim 3 between them. The end 7 of bag 6 does not project from the cleaner, nor does it come into contact with dust-laden air entering through tube 9.
Patent GB-682171-A (GB)
Title: Improvements in and relating to apparatus controlled by piezo-electric crystals
IPC: H03H9/05
Filed: 1949-02-10
Abstract: 682,171. Piezo-electric crystal holders. MURPHY RADIO, Ltd., and BOURCHIER, E. R. Feb. 9, 1950 [Feb. 10, 1949], No. 3688/49. Class 40 (viii). A mounting for a stack of piezo-electric crystals comprises a metal trough 2 on the solid ends 1 of which are mounted brackets 5 carrying blocks 6, 7. On the four sides of the blocks 6, 7 are mounted insulating strips 8, 10, 11 which define a space in which is located a stack of crystals (not shown) which are held in compression between block 7 and a spring-pressed plate 12. The leads from the crystals are connected to pins 4 passing out through the base. A metal casing 19 with insulating linings such as 21, is hermetically sealed on to the trough 2, and the assembly is enclosed in a plastic box 20. The crystal stack, Fig. 5, comprises crystals a ... n arranged in pairs between insulating plates 22. Metal plates p ... t having connecting tags are formed with dimples or ridges 16 for engaging the crystal electrode coatings near the periphery.
Patent GB-674777-A (GB)
Title: Improvements in or relating to stamping and moulding presses
Inventor: TROZMULLER FRIEDRICH JOSEF
IPC: B29C43/00
Filed: 1950-02-14
Abstract: 674,777. Embossing. SEMPERIT OSTERREICHISCH - AMERIKANISCHE G U M M IWERKE AKT.-GES. Feb. 14, 1950, No. 3699/50. Class 100 (ii). [Also in Group V] Moulds for making matrices or printing blocks from artificial resin or rubber are carried to and from a press on heated plates 7, 8 which are moved by racks 10 and pinions 11. A governor 15 is provided in the pinion drive, which operates a visible or audible signal, if a stoppage in the movement of the plates occurs. The press may be heated by a hot plate 6.
Patent GB-507679-A (GB)
Title: Improvements in steam driven rail vehicles
IPC: B61C9/04
Filed: 1938-02-07
Abstract: 507,679. Steam engines. HENSCHEL & SOHN GES. Feb. 7, 1938, Nos. 3784/38, 3785/38, 3786/38, and 3787/38. Convention dates, Feb. 23, 1937, June 1, 1937, June 11, 1937, and Oct. 4, 1937. [Class 122 (iii)] [Also in Groups XXXI and XXIV] In a rail vehicle having its axles 30, 31 driven by separate steam engines, uniformity of torque is obtained by providing each engine with two cylinders 21, 22 disposed substantially at right-angles to one another, and with a counterbalance weight 49 equal to the weight of the reciprocating parts of one cylinder. Greater uniformity of torque is secured by driving each axle by two such engines, the crank-shafts of which are relatively displaced by an angle of 45‹ or 135‹.
Patent GB-1519711-A (GB)
Title: Recovering chlorinated polymers from solution
IPC: C08C19/14
Filed: 1976-01-30
Abstract: 1519711 Recovering chlorinated polymer from solution IMPERIAL CHEMICAL INDUSTRIES Ltd 17 Dec 1976 [30 Jan 1976] 3790/76 Heading C3L A chlorinated polymer of low residual solvent content is obtained by (a) chlorinating a polymer in a solvent and (b) contacting the solution formed with steam or hot water to isolate the polymer, this step being carried out in the presence of a polymer lubricant compatible with the chlorinated polymer product in the proportions employed. The lubricants are fatty acids (C8 upwards), their esters or amides, or higher alcohols, e.g. ethyl palmitate, lauryl alcohol, tridecanol and propylene glycol monoricinoleate. Typical starting polymers are polyisoprene, natural rubber, polyethylene, polyvinyl chloride and diene polymers containing aromatic groups.
Patent GB-1536028-A (GB)
Title: Pipe-driving apparatus
IPC: E21B7/20
Filed: 1976-01-30
Abstract: 1536028 Pipe driving apparatus GEWERKSCHAFT EISENHUTTE WESTFALIA 30 Jan 1976 [6 Feb 1975] 03832/76 Heading E1F Apparatus for driving a pipe into the ground includes means such as a collar 15 to engage one end of a pipe 11' to be driven, at least one piston and cylinder unit 16 to produce the driving force, a tension member 18 associated with each unit 16 for conveying the force between the unit 16 and the collar 15, and coupling means comprising e.g. a clamp 22 to allow selective coupling between the member 18 and the collar 15 at positions displaced in the driving direction. Preferably. units 16 are disposed on opposite sides of the collar 15, each unit being at least partly surrounded by a cylindrical tension member 18. As shown, the collar 15 carries the clamps 22, each of which is in the form of a pair of half rings pivotally mounted on the collar. Each tension member 18 carries two grooves 21, 21', so that in driving the pipe 11' the clamps 22 are first secured in grooves 21. After the units 16 have been fully extended, preferably at least half the length of pipe 11' has been advanced, and, after releasing the clamps and retracting the units, the clamps 22 are then secured in grooves 21' to drive forward the remainder of the pipe 11'. One unit 16 may be pivoted at 26 to a rear abutment 17 so that it may be displaced to admit lateral introduction of a pipe length. The collar 15 may be slidably supported on floor beams 13, both beams 13 and abutment 17 preferably forming part of a support frame. The frame can be displaceable so that series of pipes may be driven in side-byside as e.g. in forming a tunnel roof support structure.
Patent GB-435684-A (GB)
Title: Improvements relating to mop wringing devices
IPC: A47L13/142
Filed: 1935-02-06
Abstract: 435,684. Mop wringers. BAKER, R. F., Hatt Common, Newbury, Berkshire. Feb. 6, 1935, No. 3844. [Class 19] A mop wringer comprises a sheath 1 attached to a rotary member 2 adapted to slide along a handle 7 by means of a guide 3 and arm 4. The sheath is flexible and is not fixed to the handle 7 but can be drawn down over the mop and rotated so as to squeeze the mop. The wringing device constitutes a separate unit and can be removed and applied to any suitable mop. A stop 8 may be provided at the top of the handle and a spring blade 9 to retain the member 3 when the device is out of use. Specification 390,265 is referred to.
Patent GB-568039-A (GB)
Title: Milling and like machine tool
IPC: B23C3/00
Filed: 1943-03-10
Abstract: 568,039. Variable-speed gearing. TANDLER, W. S., and WALKER, D. S. March 10, 1943, No. 3886. [Class 80 (ii)] Also in Groups XXII. XXXVII and XL] In a milling &c. machine for producing shaped work-pieces, the work-table is traversed continuously and the cutter slide is given a transverse movement relatively thereto under control of two rotating cylinders driven in synchronism with the respective feeds and carrying light-reflecting indicia which operate through photo-electric cells. The work-table 22, Fig. 1, carries a feed screw 84, Fig. 3, engaged by a nut 82 driven by toothed gearing 80, 74, worm gearing 70 and pick-off gears driven through shaft 60, from an electric motor 56. Rapid traverse may be given to the table by disengaging the gear 74 from the wormwheel 72 and clutching it to spiral gears 64 driven directly from the shaft 60, the clutch being operated by a rod 86 actuated through lever 96 by a solenoid 90. The cutter 32, Fig. 1, is driven by a motor 30 through pickoff and bevel gears 42, 48 and is carried in a head 26 vertically adjustable on a column 24 by a screw 108 which is driven through worm gearing 106, Fig. 6, from a motor 100 on the column. A controlling cylinder 149 carrying light-reflecting indicia is mounted on a frame 148 screwing at 152 on a stationary pin 150 so as to have an axial motion during its rotation and cause the scanning beam of light to traverse a helical path thereon. The frame carries an internal gear 158 adapted to be driven from the worm-wheel 106 always in the same direction in spite of reversals of the feed screw 108. the gear meshing with a pinion 160, secured to one side-wheel 164 of a differential train. The other side-wheel 166 is driven by the screw 108 and the planet pinions 170 are mounted in a carrier 174 keyed within a sliding clutch sleeve 182. Upward motion of the latter causes it to be held stationary against a socket 184 of the machine framing 24, in which case the bevel gears 164, 166 rotate in opposite directions and the cylinder 149 rotates in the opposite direction to the screw 108, whilst downward movement of the sleeve 182 clutches it at 180 to the worm-wheel 106, the epicyclic train being then locked and the cylinder 149 rotating in the same direction as the screw 108. The clutch sleeve is moved axially by a yoke 190 actuated through yielding linkage from a solenoid, provision being made for locking it by hand in an intermediate position to disconnect the drive from the cylinder 149. This allows the cylinder to be rotated by hand for rapid return to starting position, or allows the machine to be used for normal milling operations without rotation of the cylinder. The second control cylinder 112, Fig. 1, is driven through bevel gearing and shaft 126 from the gear 80 which the table traversing nut 82.
Patent GB-896149-A (GB)
Title: Improvements in or relating to the fire-proofing of door or similar frames of combustible material
IPC: E06B5/16
Filed: 1960-02-03
Abstract: 896,149. Fire-resisting doors. SNITKER, J. C. Feb. 3, 1960, No. 3923/60. Class 20(3) A door or similar frame 14 of combustible material is given a list 22 of incombustible mineral material, e.g. asbestos cement or mortar comprising asbestos fibres glued &c. along a face of the frame directed towards the framed aperture and the list being in direct contact with the frame material. A strip of plywood 24 covering the side face of the frame may also cover the side face of the list 22. The door strip also has a similar list.
Patent GB-632088-A (GB)
Title: Improved apparatus for gelling and vulcanising rubber dispersions
Filed: 1947-02-11
Abstract: 632,088. Vulcanizing chambers. DUNLOP RUBBER CO., Ltd., and DIBDIN, T. J. R. Feb. 11, 1947, No. 3926. [Class 70] Apparatus for gelling and vulcanizing rubber dispersions in moulds comprises a base for supporting a mould at two separate stations, a movable cover member adapted to form with the base at each station a chamber for enclosing a mould at each station, means for transferring the cover member from one station to the other, and means to admit steam within the cover at each of said stations. In a preferred embodiment a base is formed with two stations 2, 3 for moulds, a cover 4 being adapted to be placed over either 2 or 3, the cover being pivotally joined at both ends to parallel arms 5, 6 which are rigidly connected to shafts 9, 10. Cover 4 can thus be moved from one station to the other by rotation of the shafts 9, 10. A trough 14 connected to links 13 at either end of the apparatus carries weights to balance the cover 4. The cover which is double-walled is fitted with a sealing-strip 19 around the perimeter of its mouth and with a spray-pipe 20 to which water can be supplied. Each station 2, 3 has a trough-shaped bottom 29 sloping down to an outlet 30 beneath which is an S-pipe 31 to prevent the escape of steam. Moulds are supported on bars 32, beneath which is a perforated pipe 33 through which cooling water can be sprayed on to the moulds. Steam is supplied through inlets 45. When using the apparatus moulds filled with ungelled dispersions are put on one station and allowed to stand until gelling has taken place. The cover 4 is swung from the other station to cover the moulds and the cover clamped down. Steam is admitted through the inlet 45 and pipe 31 will be filled by condensate. The temperature is maintained at about 100‹ C. When vulcanization is complete the supply of steam is cut off and the moulds cooled by water delivered through pipes 20 and 33, the reduction of pressure caused by condensation of steam being prevented by relief valves (not shown). While vulcanization is proceeding at one station, further moulds are placed in position on the other and the process continued. In a second embodiment (Figs. VIa to X not shown) the means for transferring the cover comprises a track disposed at each side of the base, a carriage movable along said track, vertically movable supports for the cover mounted on the carriage, and hydraulic means mounted on the carriage for raising and lowering the supports and cover.