baber/WOPTO huggingface dataset:
Patent GB-686086-A (GB)
Title: Improvements in or relating to dust mop cleaners
IPC: A47L13/502
Filed: 1951-05-15
Abstract: 686,086. Mop cleaning appliances mops; handles. EDWIN CORPORATION. May 15, 1951 [May 15, 1950], No. 11376/51. Classes 19 and 61 (i). [Also in Group I] A cleaning appliance for a dust mop comprises an enclosure containing a foot-operated beater and is adapted to support the mop when the mop-head is inserted into it. The top 7 of the enclosure (Figs. 1, 2, 5) is provided with a depression 8 having, a raised central rib 9 and extending from an end wall 3 in which is an outwardly-opening door 12. The door is hinged about its lower edge and held shut by a torsion spring 14, a foot pedal 15 being provided for opening. A mop (Fig. 9) for use with the appliance comprises cords 19 secured at one end to a fabric sheet 20, which is attached by the edges to an upper sheet 21: a gap 22 at one edge allows of the insertion of a spring wire supporting frame 24. The frame includes portions 27 bent so as to lie over the sheet 21, the ends 28 being turned inwards and sprung into a sleeve 29 attached to the handle 23, so as to form a pivot: the wires 27 drop into depressions, Fig. 12 (not shown), in the sleeve 29 when the handle 23 is upright and then lock the mop head in position. By turning the handle to a horizontal position the mop head may be inserted in the appliance, via the door 12 (Figs. 1, 2, 5), the sleeve 29 being cut away at one side 32 so that it will slide over the rib 9. When the mop head is fully within the enclosure the sleeve 29 lies over a depression 10 in the top 7 and the handle 23 may be swung to a vertical position so as to lock the mop in place. The upper end of the enclosure contains a guide in the form of a fixed, U-shaped wire 33 which forces the mop cords downwards into the path of the beater 70. The beater comprises a rod 70 carried by a pair of arms 69 (Fig. 5), the lower ends of which are attached to a cross-bar 45, constrained to move horizontally in a box-shaped guide 40 which extends across the base of the enclosure. The cross-bar 45 is attached to a curved link 58 passing through the wall 4, being guided by a roller 55; a foot pedal 61 is pivoted to the top of the link 58, depression of which causes the cross-bar 45 to be driven across the enclosure. The return stroke is effected by a spring 49. On the forward stroke, outwardly turned lugs 83 on the arms 69 engage corresponding lugs 78 attached to a stop .member 73, so that the beater 70 is prevented from moving across the enclosure until it has risen sufficiently for the lugs to disengage; the tension in spring 72 then causes a rapid beating action to occur. The beating stroke is terminated by the beater striking the opposite stop member 76. On the return stroke of the cross-bar 45 further lugs 82 on the arms 69 engage lugs on the stop member 76, so that a similar, rapid return beating stroke is obtained upon release of the spring 72.
Patent GB-280604-A (GB)
Title: Improvements in or relating to aeronautical machines
IPC: B64C1/00
Filed: 1926-12-30
Abstract: 280,604. Porter, J. R. Dec. 30, 1926. Parachutes. - Aeronautical machines of the type having oppositely extending parachute surfaces have the surfaces a hinged at their upper edges b to the frame of the machine and their 'lower edge connected to each other or to the machine by elastic cords d, which retract the surfaces automatically as the machine alights. The edges of the segments a which compose the surfaces are joined by segmental flare pieces g which are controlled by cords i from the pilot's seat and assist in the opening of the main parachute surfaces. Specifications 209,895 and 237,350 are referred to.
Patent GB-659348-A (GB)
Title: Improvements in or relating to the production of steel sheet
IPC: C21D9/48
Filed: 1949-04-29
Abstract: 659,348. Making sheets; rolling. BETHLEHEM STEEL CO. April 29, 1949, No. 11431. Convention date, May 4, 1948. [Classes 83 (ii) and 83 (iv)] In a method of producing steel sheet, a hot rolled blank of vanadium bearing rimmed steel is slowly cooled.. The hot rolled strip, containing between 0.01 and 0.15 per cent of vanadium, may be coiled as it leaves the last stand of the mill, or it may pass through a slow-cooling chamber, or be cut into lengths and stacked. Preferably the slow cooling starts while the strip is at a temperature of between 1400‹ and 1700‹ F.
Patent GB-473078-A (GB)
Title: Process for the manufacture of urea and formaldehyde varnishes and product obtained
IPC: C08G12/12
Filed: 1936-04-22
Abstract: A varnish is prepared by reacting urea and formaldehyde, successively adding to the reactants before the completion of the reaction minor proportions of a mono- or poly-hydric alcohol, of a powdered metal, oxide, or hydroxide non-reactive in the working conditions, and of an aqueous solution of acetanilide, dehydrating the mixture on completion of the reaction, and dissolving in pure or methylated ethanol.  The varnish may be made to gel by adjusting its pH to about 7 to 8, e.g. by the addition of potash, or may be made rapid-hardening by adjusting the pH to about 2,5 to 3, e.g. by sulphuric, hydrochloric, or nitric acid, by an ammonium salt such as the thiocyanate, or by ortho-, meta-, or pyro-phosphoric acids or their ammonium salts.  In an example, commercial formaldehyde and urea are reacted in the presence of an ammonium salt, e.g. the lactate, acetate, chloride, or carbonate, or of an amide or its derivative, the pH being above 4.  Methanol is added, followed by silica, alumina or zinc, the solution is boiled, then separated from the mineral matter, aqueous acetanilide is added, and the solution dehydrated and dissolved in alcohol.  The Specification as open to inspection under Sect. 91 refers to the use of a finely divided inert mineral substance in general. This subject-matter does not appear in the Specification as accepted.
Patent GB-614441-A (GB)
Title: Improvements in methods and apparatus for mixing, rendering plastic and reducing pulverulent materials
IPC: B29C48/52
Filed: 1946-04-15
Abstract: 614,441. Extruding-machines. DEHN, F. B. (Abbe, Inc., P.O.). April 15, 1946. No. 11537. [Class 87 (ii)] [Also in Group II] For mixing, reducing and rendering plastic finely divided pulverulent material, the latter is fed from a hopper 4, Fig. 1, by a rotary worm T on a shaft 36 into a mixing cylinder 14 where it is subjected under pressure to a rubbing action by a rotary shaft 56 which may have either a worm surface T<1> or a plain cylindrical surface, and is discharged through an extrusion die 43. The shafts 36, 56 are each rotated by a pinion 38 and a driving motor, not shown, and the worm T<1> may be constructed and rotated to feed the material either toward the die 43 or slowly toward the worm T to increase the mixing action. The die 43 is of disc formation and is provided with extrusion apertures 47, Fig. 7, into which extend a plurality of wires 52 mounted on offset brackets 51 screwed to the recessed face of the die. These wires form holes in the extruded rodlike masses (of smokeless powder). Tubes, e.g. macaroni, may be made with a suitable die-plate. A clamping ring 44 and bolts 45 secure the die to the end of the tube 14, and the die is split diametrically to facilitate removal from the shaft 56. The shafts 36, 56 are supported in bearings 29 slidably mounted in a gibway in a base plate B and secured in position by bolts 33. On releasing the plate 44, removing the die 43, and releasing the bolts 33, the shafts 36, 56 may be slid out of the tube 14 for inspection, cleaning, &c. The tube is surrounded by a jacket 4 for a temperature-controlling medium.
Patent GB-683515-A (GB)
Title: An improved holder for laundry blue
IPC: D06F39/02
Filed: 1951-05-17
Abstract: 683,515. Applying washing blue. BRAUN, D. F. May 17, 1951. [June 19, 1950] No. 11567/51. Class 138 (ii). Laundry blue is held in an apertured chamber 10 attached to a closed air chamber 7 to render the device buoyant, and a gutter 5 is provided to collect drips when the device is removed from the water after use.
Patent GB-646870-A (GB)
Title: An improvement in or relating to leak-off non-return valves for use in connection with pump-operated liquid supply systems
IPC: F16K15/02
Filed: 1948-04-28
Abstract: 646,870. Regulating delivery of pumps. BLAKEBOROUGH & SONS, Ltd., J., and MELTON, G. B. April 28, 1948, No. 11579. [Class 102(i)] '[Also in Group XXIX] A leak-off non-return valve for pumpoperated liquid supply systems, e.g., boiler feed systems, comprises a housing having an inlet b<SP>1</SP>, and outlet b<SP>2</SP>,a non-return valve member a with a spindle c, and a by-pass p, d<SP>2</SP> controlled by a valve member p<SP>1</SP>, the arrangement being such that the valve member p<SP>1</SP> is closed when liquid is flowing through the outlet b<SP>2</SP> and the non- return valve member a is open, but is open upon closure of the non-return valve member to allow the pump to discharge through the byepass. The valve member p<SP>1</SP> is actuated by a hollow piston f which is moved upwardly to seat the valve member by pressure liquid admitted to a space g<SP>3</SP> when the non-return valve member is raised and carries an upper spindle h, connected with lost motion to the spindle c, beyond the lower end of a passage j. When, upon cessation of flow, the non- return valve member closes due to an unbalanced force caused by a lower part c<SP>1</SP> of the spindle being larger than the upper part, the liquid in the space g<SP>2</SP> escapes to the byepass through passages k, m, h<SP>1</SP>, n<SP>1</SP> and the piston f<SP>1</SP> is moved downwardly by pressure in a space r admitted through a passage r<SP>1</SP>.
Patent GB-436665-A (GB)
Title: Improvements in and connected with fire grates for gas producers, furnaces and the like
IPC: C10J3/34
Filed: 1934-04-17
Abstract: 436,665. Furnace grates. ALSOP, H. L., 36, Lansdowne Place, Hove, Sussex. April 17, 1934, No. 11600. [Class 51 (i)] In a grate for gas producer furnaces and the like, comprising a number of annular firebars or plates which decrease in diameter progressively upwards to form a substantially conical arrangement, alternate bars are connected together for relative movement in a substantially eccentric manner. In one form, Fig. 1, shallow conical grate bars 10 alternate with flat annular bars 11, the lowermost of the bars 10 being integral with the inner wall 8 of an annular ash pan and sealing trough 3 of a gas producer 1. The trough is rotated on rollers 7 by means of a worm 5 engaging peripheral teeth 4 on the trough. The bars 10 are connected together by U-shaped straps extending over the bars 11, which are supported eccentrically by a fixed pillar 13 which is eccentric relatively to the bars 10 and trough 3. The several bars 11 may also be eccentric to each other. Alternatively the bars 10 may be stationary and the bars 11 rotary or both sets of bars may rotate but in opposite directions. In a modified form, Fig. 2, the bars 11 are carried by the outer rings 25<a> of spiders 25 supported on a shaft 13<a> supported eccentrically by arms 21. The lower end of the shaft carries a sun gear 20 meshing with a planet gear 19 which also meshes with a ring of teeth 18 formed on an annular water trough 15. By this arrangement, as the base 1 of the producer rotates, the shaft 13<a> will be carried through a circular path of relatively small radius and will also be rotated about its axis by the planet gear. The bars 11 are formed with holes 11<c>, of relatively large diameter, through which pass bolts 23 connecting together the bars 10.
Patent GB-1064924-A (GB)
Title: Isolation of trisazo dyestuffs
IPC: D06P3/32
Filed: 1966-03-16
Abstract: Solutions or suspensions obtained in the preparation of trisazo dyestuffs CI Acid Black 94 or CI Acid Black 69 are spray-dried without previous isolation of the dyestuffs.  Standardizing agents and/or shading dyestuffs may be added to the aqueous solutions or suspensions or may be added to the product obtained by spray-drying.
Patent GB-103268-A (GB)
Title: Improved Construction of Pocket or Portable Electric Lamp.
Inventor: KING WALTER
IPC: F21L4/00
Filed: 1916-08-18
Abstract: 103,268. King, W., (Chkliar, I., and Theodor, B.). Aug. 18, 1916. Battery lamps.-In a pocket or other portable lamp, the battery cells, reflector and bulb holder, contacts, switch, and wiring are bound together as one article by a wrapping or cover of paper, cardboard, &c. This combination may be discarded when the battery is exhausted, only the bulb being preserved. In the arrangement shown, the casing 4 is grooved internally to hold a closing-plate 15, the reflector 11 being held partly by tongues 14 passing through and under the plate 15, and partly by turning the straight edges of the reflector over the edges of the casing. Alternatively, the reflector may be integral with the closing-plate, especially if this is made from pulp ; the reflector is then whitened internally. A switch contact 5 and a switch arm 9, which may be pivoted to a lug on the reflector, are mounted on the closing-plate 15 and are shielded by the projecting edge of the casing. The cells 1, 2, 3 are separated by strips 10 or by a tube around the middle cell. A contact 6 on the negative electrode of the middle cell may engage the centre contact of the bulb. The switch may then be placed in circuit between the reflector and the positive electrode of another cell as shown, or between the opposite poles of the end cells, another electrode being connected to the reflector or casing. If an insulating-tube is placed around the centre contacts of the battery and bulb, the space above the cells may be filled with sawdust and pitch. The cover-plate may, in some cases, be dispensed with and the reflector secured to the pitch, the switch being then placed on the side of the casing. Or the bulb may be at the side of the casing and the switch on its end, and cords or straps for carriage may be provided.
Patent GB-102592-A (GB)
Title: Improvements in Apparatus for Vapourizing Paraffin and other Heavy Fuels for use in Internal Combustion Engines.
Inventor: RUSSELL EDGAR
IPC: F02M31/18
Filed: 1916-08-19
Abstract: 102,592. Russell, E. Aug. 19, 1916. Vaporizers, external.-Mixture from a spray carburettor passes upwards through the tubes f of the vaporizer around which the exhaust passes. Oil on its way to the carburettor is heated in a passage m in the wall e of the vaporizer, which is also provided with a door. A modified form of vaporizer for bicycle engines is described also. Gauze disks may cover one or both ends of the pipes f.
Patent GB-943580-A (GB)
Title: Apparatus for the surface treatment of workpieces
IPC: B24B31/06
Filed: 1962-03-28
Abstract: 943,580. Tumbling. MAX SPALECK G.m.b.H. March 28, 1962 [Aug. 24, 1961], No. 11778/62. Heading B3D. [Also in Divisions B2 and F2] Apparatus for the surface treatment of workpieces, particularly mass-produced parts, comprising a container which is subject to the action of a vibrator but which is not otherwise adapted to be tilted is characterised in that the crosssectional area of the container decreases in the upward direction over at least an upper part of the height thereof. A container 3 for workpieces and abrasive agent is supported by springs 2 and has a gyratory vibration imparted thereto by an unbalance member 6 mounted in bearings on the underside of the container and rotated by an electric motor. The container is open at the top, has a substantially semi-cylindrical base 10, and has one or both side walls 7 adjoining the base inclined inwardly. The end walls may have lower vertical portions 9 and upper inwardly inclined portions 8. An access opening is provided with a cover 12.
Patent GB-1083971-A (GB)
Title: Improvements relating to crystal valves
Inventor: SCOTT WILLIAM JOSEPH
IPC: H01L29/00
Filed: 1964-03-20
Abstract: 1,083,971. Point contact diodes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 18, 1965 [March 20, 1964], No. 11888/64. Heading H1K. In a coaxial type point contact diode comprising a tubular metal casing with a central inner conductor insulatingly mounted therein and carrying either the semi-conductor crystal or the cat's whisker, a conductive insert is disposed mechanically and electrically in series with whisker and crystal between the points of fixing to the inner conductor and casing. The insert is of such length and thermal expansion coefficient that the mean expansion coefficient of the assembly between the fixing points matches that of the tubular casing. In the illustrated device the casing 1 and metal stub 8 are of brass or copper, the crystal 12 of silicon and the whisker 13 of tungsten-molybdenum alloy. The insert may be of lead-antimony alloy and soldered to the crystal or may itself be a mass of lead-tin solder or pure lead containing powdered insulating metal oxides. Alternatively a bi metal element is used. The stub 8 is adjusted to give a suitable contact pressure, locked in position by grub screw 9 and cap 14 soldered in place.
Patent GB-577813-A (GB)
Title: Improvements in and relating to the production of aromatic hydrocarbons from alicyclic hydrocarbons
IPC: C07C5/367
Filed: 1939-04-20
Abstract: In the dehydrogenation to aromatic hydrocarbons of the corresponding hexamethylene naphthenes in a mixture containing also paraffin hydrocarbons with or without pentamethylene naphthenes, unsaturated hydrocarbons, sulphur or sulphur compounds in the presence of a catalyst consisting of one or more of the metals platinum, palladium, rhodium, osmium, iridium or ruthenium, supported on active carbon and maintained at a temperature not exceeding 450 DEG  C., the life of the catalyst is lengthened by the addition of hydrogen at the start of the reaction zone.  The amount of hydrogen to be added is determined by small scale trials.  A larger amount of hydrogen than that sufficient to effect the result of the invention may be added, but care must be taken not to add too great an excess.  The hydrogen may, if desired, be obtained by recycling some of the hydrogen produced in the dehydrogenation process after separation from the other reaction products.  It is preferred to fractionate a petroleum product to be treated according to this invention into two fractions comprising one richer in hexamethylene naphthenes and one poorer in such materials.  The process of the invention is then applied to the richer fraction, and the products obtained added to the other fraction or such part of the other fraction as may be desired.  It is also preferred, if the starting material contains large amounts of impurities such as sulphur and sulphur compounds, unsaturated hydrocarbons, nitrogen compounds and compounds which can produce carbon monoxide, to subject such starting materials to a preliminary purification.  Such purification preferably consists of a mild hydrogenation treatment, and preferably applied using hydrogenation catalysts which absorb the hydrogen sulphide formed so as to avoid the necessity of cooling the products before proceeding to the dehydrogenation treatment.  In examples: (1) a petrol from the hydrogenation of a middle oil containing aromatics, paraffin hydrocarbons, pentamethylene naphthenes and hexamethylene naphthenes is separated into two fractions by distillation.  The heavier fraction is treated to remove sulphur by passage over a mildly hydrogenating catalyst of zinc oxide and nickel in the presence of hydrogen and then dehydrogenated by passing over platinum supported on activated coconut shell charcoal in the presence of a small amount of hydrogen.  The dehydrogenated product is then reunited with the untreated fraction, to give a petrol with an improved octane number. (2) A petrol fraction containing hexamethylene naphthenes is freed from sulphur as in example (1) and then dehydrogenated as before to give a product of improved octane number.
Patent GB-803323-A (GB)
Title: Anastigmatic objective
IPC: G02B13/00
Filed: 1957-04-11
Abstract: 803,323. Optical objectives. ZEISSSTIFTUNG, C., [trading as ZEISS, C. [Firm of]]. April 11, 1957 [May 4, 1956], No. 11949/57. Addition to 772,698. Class 97(1)  An astigmatic objective as claimed in the parent Specification is characterized in that at least one of the two external dispersive single lenses is supplemented by a collective lens of stronger chromatic dispersion. The two lenses may be separated by a small airspace. Optical data ar given for one example of the objective shown. Specification 423,156 also is referred to.
Patent GB-629694-A (GB)
Title: Table stands for automatic acutation of friction lighters
IPC: F23Q2/08
Filed: 1947-05-03
Abstract: 629,694. Frictional igmters. LOWENTHAL, J., and MOORE, C. W. May 3,1947, No. 11977. [Class 75(iii)] A stand or holder for a frictional lighter, of the automatic type wherein the sparking mechanism is operated on release of retaining means therefor, is provided with an actuating member arranged to engage with and operate said retaining means. The lighter may be used independently of the stand if desired, and is similar to those described in Specifications 612,903 and 612,904, apart from the retaining means which is modified for co-operation with the actuating member on the stand. A casing 11, Fig. 1, secured to a base 10 and having an open top, slidably receives a frictional lighter 13. The sliding catch plate 30 of the lighter by which the cover is released for automatic ignition of the wick has a T-shaped projection 38 at one end, the stem of the T being received in a vertical slot in the end wall of the casing 11. At each side of the slot there is a projection 40 having an inclined surface 41, which, when the lighter is moved downwards against the action of a spring-urged plunger 42 in the base 10, co-acts with the arms of the T to move the sliding plate 30 against its spring so that the lighter is operated, whereupon it may be used either in the stand or removed therefrom. To facilitate removal from the stand, the upper part of the casing is cut away at 45. In a modification, Fig. 6, the T-shaped member 38 and projections 40 are dispensed with. A trip lever 50, pivoted on a pin 51 between brackets 52 on one end wall of the casing 11, is spring-urged against a stop 54 which bridges the brackets 52. The sliding plate 30 is reduced in width at the end carrying the hook 31, and the reduced part or tongue 55 moves in a slot in the cover plate 56 of the lighter, the outer end of the tongue 55 being flush with the end of the cover plate 56 when the lighter is inoperative. The trip lever 50, which is at least as narrow as the tongue 55, is aligned with the tongue when the lighter is in the stand, and, when in contact with the stop 54, it projects into the path of the tongue as the lighter is being inserted in or removed from the stand. In use, when the lighter is put in the casing 11, the lever 50 is rocked as the tongue 55 passes it and is then returned by its spring to its original position against the stop 54. On withdrawing the lighter the lever 50 engages the tongue 55 and moves the latter, and hence the plate 30 to the right, the lever in this direction of movement being rigidly supported by the stop 54, with the result that the hook 31 is disengaged from the lid 24 which then springs open to operate the lighter. If the action of the trip lever is reversed the lighter will be operated as it is being pressed into the stand, a spring-urged plunger as in Fig. 1 being provided if desired. Alternatively the trip lever may be replaced by a projection having an inclined surface which engages the tongue 55 as the lighter is pressed further into the casing against the action of a spring-urged plunger.