baber/WOPTO huggingface dataset:
Patent GB-732618-A (GB)
Title: A method for the manufacture of metal articles by sintering at low temperatures
IPC: B22F3/12
Filed: 1953-07-13
Abstract: 732,618. Powder metallurgy. AGTE, C. July 13, 1953 [July 25, 1952], No. 19353/53. Class 83 (4). For producing articles by powder metallurgy at comparatively low sintering temperatures, the initial metal powder comprises 60-90 per cent of grains of size 0.2-1.0 micron and 40- 10 per cent of a size 2-5 microns and is compacted at 2-10 tons per square cm. and sintered in dry hydrogen at a temperature which, measured in degrees absolute, is between 0.2 and 0.55 of the melting-point of the metal. The powder is preferably obtained by the reduction of a salt or oxide of a metal in hydrogen and after a second reduction treatment at a higher temperature is ground for at least 40 hours in an organic liquid such as carbon tetrachloride, trichlorethylene, benzene, acetone &c. to which is added 0.5-3 per cent of an aliphatic acid or its ester. In an example, molybdenum oxide is reduced in dry hydrogen at a final temperature of 820-850‹ C. and cooled in carbon dioxide. The resulting molybdenum powder is sifted through a screen of 0.06 mm. mesh, given a further reducing treatment in dry hydrogen at about 800‹C. and ground for 72 hours in tetrachlormethane to which 0.5-3 per cent stearine is added. The powder is then compacted at 2-10 tons per square cm. and the compacts packed in a protective material such as powdered aluminium oxide or beryllium oxide on which a thin layer of fine-grained ferrotitanium is poured to act as a getter and so prevent access of oxygen. The sintering temperature is 900-1250‹ C. For other metals the sintering temperatures would be tungsten 1000‹- 1400‹ C., iron 550-850‹ C., cobalt 650- 800‹ C., nickel 600-850‹ C. and copper 400- 580‹ C.
Patent GB-840962-A (GB)
Title: Improvements in potato harvesters
IPC: A01D33/04
Filed: 1956-06-25
Abstract: 840,962. Pneumatic separating. STEELE, W., and ALLAN, R. Sept. 25, 1957 [June 25, 1956], No. 19539/56. Class 117 [Also in Group I] A potato harvester (see Group I) includes an air separator for removing stones from potatoes which are fed to an inclined shoot 21 from a shaking riddle 18. The separator includes an air compresser 22 driven by an I.C. engine 23 which feeds air to a box 25, Figs. 3 and 7, having nozzles 24 directed upwards towards a gap 29 in the underside of the shoot and across the mouth of an exit 26 for the stones. Potatoes pass over the gap to a ledge 28 and are carried away by an elevator 30, whereas the stones fall through the gap and from the exit 26. A grid-like floor 24A, Fig. 7, protects the nozzles from the falling stones.
Patent GB-445162-A (GB)
Title: Improvements in and relating to fabric take-up devices for flat warp knitting machines
IPC: D04B27/34
Filed: 1935-07-09
Abstract: 445,162. Knitting. WIRTH, E., WIRTH, H., and LOSCHNER, J., Hartmannsdorf, near Chemnitz, Germany. July 9, 1935, No. 19639. Convention date, April 18. [Class 74 (ii)] A fabric take-up for a flap-warp knitting- machine, in which there is separate automatic mechanism for correcting overdriving of the take-up roller 31 by the fabric, and for regulating the speed of the winding-on roller, is driven by an endless-chain, cable, or the like 29 passed over a pair of sprocket wheels or drums 8, 11, the sprocket 11 being actuated by a ratchet wheel 12 to maintain a substantially constant length of chain or the like between the wheels. The ratchet wheel 12 is racked by a pawl 21, actuated by a cam 28 through rocking levers 24, 23, and 19, 18. When the rate of rotation of roller 31 exceeds that determined by the cam 28, a roller 17 under which the chain passes is lifted, so rocking downwards the other end 13 of a centrally pivoted lever on which it is mounted, thus bringing a shield 15 from under the pawl 21, to allow it to rack the ratchet wheel 12 more teeth at each stroke. When, due to the increase of the diameter of the roll on the shaft 3, the fabric is wound on at a rate greater than that at which it is supplied, it depresses a pivoted arm 34 which carries a roller 36, against the action of a spring 40. An extension 37 rocks a centrally pivoted arm 45, 46, to bring a shield 47 beneath a pawl 49 (which is mounted with pawl 21, on shaft 20) and so lessens its effective stroke on a ratchet wheel 42, which, through a sleeve 51 freely mounted on shaft 10, and pinions 43, 44, drives the shaft 3. The take-up tension can be initially adjusted by weighting the roller 30 suspended on the chain 29. The spring 40 may be adjusted by a screw 34, and sleeve 39. The roller 31 is covered with felt or the like.
Patent GB-762945-A (GB)
Title: Power take-off attachment for electrically driven carpet cleaners
IPC: A47L11/40
Filed: 1952-08-05
Abstract: 762,945. Carpet sweepers. LACEY, L. P. Nov. 5, 1953 [Aug. 5, 1952], No. 19641/52. Class 138(1) A power take-off attachment for a carpet cleaner of the type having a rotatable brush driven from' a drive shaft 3, Fig. 1, operatively connected to an electric motor (supported in a housing 1) comprises, a base 7 adapted to be releasably, secured to the cleaner,' a take-off shaft 13 to engage the drive shaft 3, a reduction. gearing 12 supported by the base 7 and a flexible shaft 14 to be driven by the cleaner, which shaft 14 is operatively connected to the take-off shaft 13 through the gearing 12. The base member 7, Fig. 2, has turned-up ends 8, 9, and supports a. U-shaped member 10 the legs of which are slotted at 15 to receive bolts 11 to adjustably mount the reduction gear housing 12. Slots 17A in the end 9 receive screws 16, Fig. 1, to adjustably mount an arcuate plate member 17. Journalled in the end 8 and in a projection 21 of the base is a spindle 20 which is screw connected to a finger 18 slidable in a slot 19 in the base 7. The spindle 20 is rotatable by a knob 22. Referring to Fig. 1, the carpet cleaner housing 1 has a partition 5, provided with an aperture 4 through which passes the motor drive shaft 3, and a front aperture 2 normally closable by a releasable cap (not shown).' The shaft 3 has a groove 6 normally connected by the drive belt to the brush (not shown-). In order to use the power take-off attachment, the belt and brush are removed and the base 7 is passed through the aperture 2 so that the plate 17 rests in the aperture 4 and the base rests on the bottom of the aperture 2. The knob 22' is then rotated to draw the finger 18 into' engagement with the inner end of the housing so as to secure the attachment in place. A friction wheel 23 on the shaft 13 is then in engagement with the shaft 3. In a modification described with reference to Fig. 3 (not shown) the plate 17 is provided with three radial recesses in which are adjustably secured plate members which can thus engage the periphery of aperture 4 of larger size. The flexible shaft 14 may be detachably connected to a hand polisher as described with reference to Fig. 4 (not shown) or to an eggwhisk. Instead of a friction drive between the shafts 3 and 13 the shaft 3: could be provided with a pinion adapted to be engaged by a gear wheel secured on the shaft 13.
Patent GB-642036-A (GB)
Title: Improved process for burning lime
IPC: C04B2/10
Filed: 1947-07-22
Abstract: <PICT:0642036/III/1> Limestone is calcined whilst in the form of a dense fluidized bed. As shown, the material from crusher 1 and pulverizer 3 is fed to a container 5 wherein it is aerated by flue gas, air, &c. from pipe 9.  The fluidized powder passes to the upper part of reactor 10 wherein it is dried by hot gases from the lower sections passing through grid G.  The gases pass through cyclone separator 12 and waste heat boiler 14, fines being returned.  After drying, the material flows over baffle 16 provided with valve 17 to calcining section 18, to the lower part of which air or oxygen and fuel oil or powdered coal is supplied via pipe 20 to produce a temperature of 900-1100 DEG  C.  More than one calcining section may be used. The calcined lime passes through cooler 23 to container 27, pipe 32 communicating with a bag filter.  Fluidizing gases enter the system via pipes 19, 24, 25, 30, 31.  In a modification, part of the calcined lime from the exit is returned to the calcining section via a heat exchanger.
Patent GB-1038135-A (GB)
Title: Improvements in mouthpieces for cigarettes
IPC: A24D3/04
Filed: 1962-05-23
Abstract: 1,038,135. Tobacco smoke filters. D. T. N. WILLIAMSON and MOLINS ORGANISATION Ltd. May 21, 1963 [May 23, 1962], No. 19760/62. Heading A2C. A method of producing composite mouthpieces, comprises the steps of producing stubs each consisting of a core of material 1 enclosed within a tube 2, displacing the core of such a stub lengthwise of the tube to form a recess at one end of the tube, placing a further stub S<SP>1</SP> in endwise abutment with the tube at the end where it is so recessed, and uniting the two abutted stubs by an encircling uniting band. Two cores 1 may be displaced in opposite direction in the stub 2 and a double length stub S<SP>1</SP> inserted therebetween as shown to form a double filter assembly. The assembly may then be inserted between two cigarette lengths and the whole bisected to form two double filter cigarettes.
Patent GB-149607-A (GB)
Title: A jig for assembling electric switch parts
IPC: H02B3/00
Filed: 1919-05-13
Abstract: 149,607. Tucker, J. B., and Tucker &. Co., J. H. May 13, 1919. Screws, inserting. - In apparatus for assembling electric switches', a jig is used to support and position the base of the switch and the bracket of the switch action during the insertion of the fixing-screw. A squaresection jig 1 has a flat upstanding lug 9 which passes between the ears 10 of the bracket, the base 4 of which rests on the upper surface of the jig, side flanges 11 being provided to prevent lateral deviation. A blade spring 12 on the jig is arranged to bear against the end' of the slot in the base 2. The lug may be notched at the rear to accommodate the contact spring of the contact arm' 7, and a notch may be provided in the jig to accommodate the bridge 5. The screw 3 may be inserted by a mechanical screwdriver or an automatic screw-driving device. A series of the jigs may be mounted on a rotary table as described in Specification 149,427.
Patent GB-499313-A (GB)
Title: Sensitive photographic elements
IPC: G03C1/33
Filed: 1937-07-20
Abstract: 499,313. Photographic sensitive materials. KODAK, Ltd. July 20, 1937, No. 20025. Convention date, Aug. 19, 1936. Addition to 468,678. [Class 98 (ii)] The tendency of the wax emulsion described in the parent Specification to coagulate owing to the presence of alkaline earth metals, e.g. magnesium, is prevented by adding either to the wax emulsion, or to the gelatine emulsion or solution used in its preparation, an alkali metal salt of hexametaphosphoric acid. In one example, sodium hexametaphosphate is added to a photographic emulsion into which is then stirred the wax emulsion. In another example, the photographic emulsion is stirred into a mixture of wax emulsion and sodium hexametaphosphate dissolved in water. The salt may also be added to the wax emulsions mixed with gelatine solutions which are used as backings, undercoats or overcoating layers for photographic film.
Patent GB-1064492-A (GB)
Title: Improvements in or relating to the manufacture of flat glass
IPC: C03B18/18
Filed: 1963-05-20
Abstract: <PICT:1064492/C1/1> In the manufacture of flat glass by moving a ribbon of glass along a bath of molten metal as disclosed in Specifications 769,692 and 893,663, any dross formed on the metal is directed to and removed from a pocket of the metal in communication with the bath. Pockets 35 are formed on each side of the tank 5 containing the metal 9 on which the ribbon of glass 22 floats, and brushes 49 of steel wires on a carbon rod are movable therein to sweep any dross from the exposed edge of the metal over a sill 44 into a section 45 and on to a sloping edge of the wall 36 where entrained metal can drain back into the bath and whence the dross can be removed into a receptacle 46.  Each brush is moved by a screw 48 reversibly driven by a motor and is arranged so that, during the sweeping stroke, it just dips into the metal, but during the return stroke, is raised above the surface.  In alternative arrangements, blasts of gas or a circulation of the metal may be used to direct the dross into the pockets.
Patent GB-200585-A (GB)
Abstract: 200,585. Haddan, A. J. H., (National Cash Register Co.). April 13, 1922. Cash registers; keys.-In order to avoid overthrow of the totalizer elements in key-set and operated cash registers, the differential upright 20 is moved by the key 15 through means enabling the upright to travel slower or alternately faster and slower than the key. In the form shown, applicable to the case of the higher value keys, the upright 20, differentially actuating the totalizer through the pivoted sector 25 in the usual manner, is connected to the key lever 15 by a pin and slot 66 and carries a roller 68 engaged by a cam plate 70 fixed to or integral with the key lever. The plate is formed with two inclined edges 69, 72 the effect of which is to increase and then diminish the speed of upward movement of the upright with respect to the speed of the key. In the case of low value keys, the, cam edge falls away so that the upright slows down from the moment when it operatively engages the actuating sector.
Patent GB-477055-A (GB)
Title: Process for the production of a series of coloured pigments from titanic acid derivatives
IPC: C01G23/00
Filed: 1936-07-20
Abstract: A coloured pigment is prepared by calcining an intimate mixture of substances capable of forming two or more isomorphous salts or bivalent metals, of which salts at least one has titanium as the metallic element of its acidic component, the acidic element of the remaining salt or salts being at least one of the metals aluminium, iron and tin the substances being mixed in such proportions that stoichiometric quantities of the acidic and bivalent components are present, so that the process of calcination gives rise to the formation of the said isomorphous salts, and to the final formation of clearly defined solid solutions between these isomorphous salts. The ingredients of the starting mixture may be in the form of oxides, of compounds which are transformed into oxides by calcination, or, in some cases, of the finely-divided metals themselves.  Specified constituents of such coloured pigments are zinc, magnesium, lead, cobalt, nickel, iron, manganese, copper, titanates, aluminates, ferrites, stannites and stannates.  Specification 384,473 is referred to.  The Specification as open to inspection under Sect. 91, describes also the preparation of coloured pigments consisting of solid solutions of two or more isomorphous titanates, and the use of chromium compounds as ingredients in the titanium pigments.  This subject-matter does not appear in the Specification as accepted.
Patent GB-451988-A (GB)
Title: Improvements in or relating to the treatment of mineral or vegetable oils for the production of thickened or solidified oil therefrom
IPC: C09F5/00
Filed: 1935-07-13
Abstract: Mineral or vegetable oil is thickened or solidified by adding 25--45 lb. of dehydrated soap free of resin or wool fat acids to each ton of oil, heating to 295 DEG  C., and allowing to cool.
Patent GB-148200-A (GB)
Title: Improvements in gas-meters
IPC: G01F3/30
Filed: 1920-07-09
Abstract: 148,200. Pintsch Akt.-Ges., J. June 8, 1917, [Convention date]. Addition to 147,691. Gas meters.-In a gas meter of the kind described in the parent Specification, an overflow pipe 17 is provided in compartment 3 and communicating with the sump 15, its upper edge being below the normal liquid level in the measuring-chamber 10 and in compartment 4 and below the top of the pipe 8 which adjusts the liquid-level in compartment 4. By this means the liquid level in the measuring-chamber 10, compartments 3 and 4, and in the receiving-chamber 7, is prevented from rising above the adjusting- pipe 8 and decreasing the measuring-space should the adjustment effected by unscrewing the plug 13 be omitted. When the meter is being charged, the liquid will overflow into the pipe 17 and enter the sump 15 until the gas-meter is fully charged, as will be indicated by the liquid leaving through the opened outlet 12. A pipe 18 is provided to furnish a liquid seal for the pipe 17 to prevent gas which is to be measured from leaking from the compartment 4 through the gas inlet pipe 14 and over-flow pipe 17 into the compartment 3.
Patent GB-473325-A (GB)
Title: Improvements in or relating to slide valve controlled four-stroke cycle internal combustion engines
IPC: F02B75/02
Filed: 1936-03-04
Abstract: 473,325. Cylinders. BUCHI, A. March 4, 1936, No. 20129/37. Divided out of and addition to 456,806 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 7, 1936. [Class 7 (ii)] A four-stroke sleeve-valve engine, which is scavenged by overlap of the exhaust and inlet periods, and in which the charge is whirled round a restricted combustion chamber by co-operating helical faces on the piston and cylinder head, as described in the parent Specification, operates with combustible mixture and artificial ignition. Air only is used during the overlap of the exhaust and inlet periods, mixture being introduced after closure of the exhaust ports.
Patent GB-427303-A (GB)
Title: Improvements in cathode ray tubes
IPC: H01J29/52
Filed: 1933-07-17
Abstract: 427,303. Cathode-ray tubes. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin) July 17, 1933, No. 20183. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 16, 1934]. [Class 39 (i)] Cathode-ray tubes for television, sound recording &c. having a controlling cylinder 6 between the cathode 5 and the anode 4 and negatively biassed with respect to the cathode, are provided with a positively biassed auxiliary electrode 7 arranged between the cathode and the cylinder 6. The electrode 7 is at or below the potential of the anode 4 and may be connected to the anode inside the tube. The electrode 7 is of non-magnetic metal and comprises an apertured plate as shown, a cylinder or a grid and may have a cylindrical extension about the cathode 5. The tube may be filled with argon at a pressure of À01 mm. The electrode 7 increases and accelerates the electron stream and reduces disturbances due to gas atoms which are ionized or excited to the metastable state. Electrode voltages are specified ; by varying the voltage on the electrode 7, the slope of the characteristic curve connecting the fluorescent light at the screen 2 with the voltage on the cylinder 6 at constant anode voltage is varied.
Patent GB-614200-A (GB)
Title: A method and apparatus for the charging of raw materials to melting furnaces
IPC: C03B3/02
Filed: 1946-07-05
Abstract: 614,200. Glass manufacture. DRAMMENS GLASSVERK. July 5, 1946, No. 20209. Convention date, April 3, 1943. [Class 56] [Also in Groups II and XII] Raw materials are charged to a melting furnace through a refractory pipe which is so disposed that the charge material is partly sintered and leaves the pipe as a consistent mass. As applied to a glass furnace, the charge is fed through a refractory pipe 2, an easilyfusible material, such as glass powder, being supplied from an annular hopper 3 to prevent the charge adhering to the wall of the pipe. When an initial charge is supplied to the furnace it is held in the pipe by a plate 7 until the material has sintered sufficiently, when the plate is allowed to drop into the bath and is recovered at a later stage.
Patent GB-421789-A (GB)
Title: Improvements in or relating to feed roll driving mechanism for machines for treating hides, skins, leather and the like
IPC: C14B1/30
Filed: 1934-07-10
Abstract: 421,789. Toothed gearing. MASCHINENFABRIK TURNER AKT.-GES., 20, Westendstrasse, Frankfort-on-Main, Germany. July 10, 1934, No. 20237. Convention date, March 2. [Class 80 (i)] [See also Group VIII] In a feed-roll drive for leather-working machines, the bed roll 3 is moved laterally towards a constantly rotating roll 1, so as to be driven therefrom by toothed wheels 4, 5, which are synchronized before engagement by spring-pressed friction discs 9, 10 on the shaft of the roll 3 engaging a disc 6 on the shaft of the roll 1.
Patent GB-596960-A (GB)
Title: Improvements in cabinets combined with bedsteads
IPC: A47C17/48
Filed: 1945-08-07
Abstract: 596,960. Cabinet beds. JONSSON, K. O. E. Aug. 7, 1945, No. 20243. [Class 52(ii)] A bed frame 2 with foldable legs 9 has bracket arms 10 disengageably pivoted on similar arms 6 on another bed frame 1 pivoted lengthwise at 4 on the cabinet walls. The bed 2 can be disengaged and used separately or can be left stowed while the bed 1 is unfolded. In folding the bed 2 is swung upwardly to, lie over the bed 1 and is supported by the brackets 6, 10 and by a foldable strut 13; the bed 1 can then be swung upwardly about the pivots 4.
Patent GB-421955-A (GB)
Title: Improvements in the manufacture of luminous electric discharge tubes and the like
IPC: C09K11/02
Filed: 1934-07-10
Abstract: 421,955. Glass manufacture. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand- Ges. f³r Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) July 10, 1934, No. 20258. Convention date, Jan. 3. [Class 56] [See also Groups XL and XX] In coating the interior surface of a vitreous envelope, such as that of a luminous electric discharge tube, with luminescent material by applying to the walls a volatile binder and then a film of the luminescent material and heating to remove the binder, the walls are heated to softening temperature, for example, to 550-600‹ C. for soda-lime glass, whilst maintaining a slight excess of pressure inside them to prevent their collapse. The luminescent material is thus fused into the walls and its adhesion may be improved by frosting the walls before the binder is initially applied. The binder may be glycerine or a mixture of glycerine and boric acid and the luminescent material may be zinc sulphide, zinc silicate, calcium tungstate or magnesium molybdate. The excess pressure may be obtained by feeding compressed air through the exhaust tube or by sealing the envelope filled with air at atmospheric pressure before the heating, the compressed air and the vapour from the binder being subsequently removed.
Patent GB-531230-A (GB)
Title: Improvements relating to multi-stage, free piston motor compressors
IPC: F04B31/00
Filed: 1939-07-14
Abstract: 531,230. Free-piston compressors. PESCARA, R. P. July 14, 1939, No. 20587. Convention date, July 16, 1938. [Class 8 (i)] [Also in Group XXVII] All the compression stages of a multi-stage free-piston compressor are disposed on one side of its motor cylinder 1, and an energy accumulator 10 which effects the return stroke is disposed on the other side. A counter pressure acts on the inactive face of one of the compressor pistons, e.g. each of these pistons P1, P2, P3 may be subjected on its inactive face to the pressure of the next lower stage. Interstage coolers C1, C2 may be provided. The pressures and areas of the successive stages may be in geometrical progression. The compression section of the apparatus may be removable from the motor section and replaceable by another compression section having a different number of stages but the same resultant fluid force. The space on the other side of the energy accumulator piston 9 or the space on the inactive side of the first stage compressor piston may be used to compress scavenging air for the motor.
Patent GB-954362-A (GB)
Title: Improvements relating to electrical selector switches
IPC: H01H19/58
Filed: 1960-06-10
Abstract: 954,362. Mechanical switches without quick action. ENDEVCO CORPORATION. June 10, 1960 [June 15, 1959], No. 20596/60. Drawings to Specification. Heading H2B. [Also in Heading G4] The subject-matter of this Specification is identical with that described in Specification 954,363 but the claims are concerned with the correspondence between the digit displayed and the contacts selected.