baber/WOPTO huggingface dataset:
Patent GB-290120-A (GB)
Title: Improvements in wire stapling mechanisms
IPC: B42B4/02
Filed: 1927-11-18
Abstract: 290,120. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). Nov. 18, 1927. Associating-apparatus; stapling-devices; cutting-apparatus. - A wire-stapling machine for operating on collected or uncollected sheets comprises stapling-mechanism mounted in a rotary carrier and provided with means for supporting the back of the staple during substantially the entire stapling operation, the carrier being adjustable for driving staples during each, or every alternate, revolution, and comprising also means for collecting sheets and cutting them from a web. As shown, the carrier comprises a cylinder 1 which is mounted on a driven shaft 2 and cooperates with a cylinder 8 provided with clenching anvils. Two or more stapling-mechanisms are provided in the carrier. Each comprises a forming-mechanism operated by a shaft 17 and a driver operated by a shalt 18, the two shafts being operated by cams 19, 20 loose on the shaft 2. If the cams 19, 20 are stationary as the cylinder 1 revolves, staples are inserted at each revolution. For stapling at each alternate revolution, the cams are driven at half the speed of the cylinder 1 by gears 22, 24 and 21, 25 which are brought into mesh by hand levers 26, Fig. 6. The staple-forming mechanism comprises a pair of formers 27, 28, Figs. 1 and 8, which are first protruded to shape the staple in co-operation with an eccentrically-mounted horn 29, and are then withdrawn into the cylinder to position the staple for driving. The formers 27, 28 are linked to hubs on the shaft 17. The staple driver 43 is linked to and operated by the shaft 18. and has a tail-piece 44 guided in a block 45. Means for supporting the back of the staple during driving comprises a reciprocating slide 51 moving in a slot in the periphery of the cylinder. The slide has a bevelled end 53, Fig. 1, which is moved between the staple legs when the staple has been formed. The slide is linked to the driver 43 by a bell-crank lover 63, 69 so that it is progressively withdrawn as the driver advances. The cylinder 1 includes a sheet cutter 11 co-operating with a block 16, and collecting-pins 80 on rods 10. The latter are operated from the rock shaft 18 through a link 79, cam 75, and rock shaft 71. The pins 80 are removed when no collecting is to be done. In operation, as the cylinder 1 rotates, the pins 80 are first projected to take the leading end of the web W, and the formers 27, 28 are projected to shape a staple. The staple is then drawn into the cylinder and the slide 51 moves forward to operative position. The pins 80 are next withdrawn and the cutter 11 severs a sheet. Finally, the driver 43 inserts the staple with progressive withdraw of the slide 51.
Patent GB-1521304-A (GB)
Title: Hi-fi loudspeaker arrangement
IPC: H04R1/26
Filed: 1975-07-24
Abstract: 1521304 Loud-speakers K O POENSGEN 24 July 1975 [25 July 1974] 31068/75 Heading H4J Loud-speaker cabinet has at least one low frequency reproducer and four high frequency reproducers, the high frequency reproducers being distributed about a vertical axis to have at least a component of their radiation normal to the vertical axis, with a further high frequency reproducer mounted to provide vertically upward radiation. As described the cabinet may be of square or circular cross-section with four high frequency reproducers 5 mounted one on each side wall, or at equally spaced positions about the cylindrical side wall, together with one low frequency reproducer 6 mounted to radiate forwardly, or downwardly, Fig. 3 (not shown), or two low frequency reproducers mounted to radiate forwardly and rearwardly, or one to each side, with a further high frequency reproducer 5' mounted in the top wall to radiate vertically upwardly. The high frequency reproducers may be supplemented by mid frequency reproducers 8, or may themselves radiate both high and mid frequencies.
Patent GB-1272781-A (GB)
Title: Conductive metal-to-ceramic glass seal compositions
IPC: C04B37/02
Filed: 1969-06-19
Abstract: 1,272,781. Sparking plugs. GENERAL MOTORS CORP. June 19, 1969 [June 26, 1968], No.31072/69. Heading F1B. [Also in Division C1] A spark-plug 10 comprises a ceramic insulator 16 (e.g. of high alumina content) having a centre bore 18, 20 therethrough and a metal centre electrode 22, and a dense fused electrically conductive mass 30 bonded to the insulator and electrode to form a hermetic seal in said centre bore, the mass 30 consisting essentially of 29-50 weight per cent iron, 1-6 weight per cent aluminium and 49-68 weight per cent glass of softening temperature 1560-1600F.
Patent GB-1521983-A (GB)
Title: Spouted/fluidised bed reactor systems
IPC: B01J8/44
Filed: 1975-07-24
Abstract: 1521983 Fluidised bed reactors; fluidised bed coating apparatus COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION 24 July 1975 [26 July 1974] 31075/75 Headings B1F and B2L [Also in Division F4] A spouted-fluidized bed reactor used for treating materials and particularly for combustion of industrial wastes, comprises a single nozzle 11 projecting into the lower region of a deep bed of refractory particles, such as sand, burnt shale and ash, and supplied with air, and fuel through separate ducts 13 and 14 respectively. The velocity of air leaving the nozzle aperture 12 is such as to cause the particles in the bed to undergo a spouting action within a conical region A directly above the nozzle and to maintain the particles in the region B above the spouted region A in a fluidized state. The region C, which as shown contains stagnant particles, may be incipiently fluidized with a separate supply of air (see Fig. 2 not shown). Material to be treated such as slurries and sludges may be fed into the reactor through a feed pipe 18; alternatively they may be fed directly into the spouted bed region A adjacent the nozzle 11 through a pipe (15, Fig. 2, not shown). Air entering the bed is preheated by injecting hot particles from the stagnant region C into the incoming air duct 13 using an injector 20; excess bed particles may be withdrawn through a downcomer 17. The bed can be cooled by the addition of water through a separate feed pipe. Tertiary air enters the bed through peripheral holes 19 in the uppermost part of the nozzle 11. An atomizer may be used when liquid fuels and liquid waste are to be supplied to the nozzle, atomizing air or steam being supplied through a concentric tube (22, Fig. 5, not shown). Different feedstocks may be introduced through separate nozzles to establish a plurality of independent spouted bed regions within an extensive particulate bed (see Fig. 4, not shown). Examples of the use of the spoutedfluidized bed include the drying and pretreatment of granular solids and slurries, granulation, particle coating, gas cleaning, pyrolysis in cracking carbonaceous solids and hydrocarbon liquids or gases, the gasification of carbon, iron ore reduction and carbon activation.
Patent GB-362595-A (GB)
Title: Improvements in or relating to devices for humidifying the air in poultry battery brooders
IPC: A01K41/04
Filed: 1930-10-17
Abstract: 362,595. Rearing-appliances. HEBDITCH, H., Fosseway, Martock, Somerset. Oct. 17, 1930, No. 31085. [Class 5 (ii).] In ß brooder, water is allowed to drip from a water - dripping device on to one or more trays or receptacles, above each of which is disposed a n upstanding sleeve of absorbent material on to which the water, dripping into the tray or receptacle, is splashed, said water being absorbed by the sleeve, thereby moistening the surrounding atmosphere. Water from a tank 14 drips through a succession of absorbers 12 into a trough 16, the absorbers 12 being located between the gauze sides of the various compartments 3 of the brooder. Each absorber 12 comprises a baseplate 1 soldered to which is a shallow cylindrical band, forming a tray 5. A disc 6 comprising perforations 7 is carried by uprights 8 which carry at their upper ends a sleeve 9 ; a collar 11 carrying a sleeve of towelling or other absorbent material, slides over the sleeve 9; the lower end of the absorbent sleeve is fixed to a ring 13 resting on the plate 1 within the tray 5. The plate 1 has a water outlet 10 and may be provided with feet 4 or may be adapted to slide in guides. The collar 11 and'ring 13 are formed by folding a strip of metal longitudinally the two laminations so formed, gripping the ends of the absorbent sleeve.
Patent GB-1081411-A (GB)
Title: Improvements in or relating to temperature transducers
IPC: H05B1/02
Filed: 1964-08-04
Abstract: 1,081,411. Variable resistors. HONEYWELL Inc. Aug. 4, 1964 [Aug. 5, 1963], No. 31091/64. Heading H1S. [Also in Division G1] A rheostat comprises a bobbin 70 of hexagonal cross-section on which is wound resistance wire 71, and an elongate wiper 81 which traverses wire 71 along a longitudinal edge of the bobbin 70 and which remains throughout its excursion at an acute angle to the said edge of the bobbin. The wiper is held against the bobbin by a spring 84, which also affords an electrical connection to the wiper.
Patent GB-695822-A (GB)
Title: Optical apparatus for inspecting the contour of an article
Inventor: WALKER JACK
IPC: G02B21/00
Filed: 1950-12-21
Abstract: 695,822. Optical-projection apparatus. ARMSTRONG SIDDELEY MOTORS, Ltd. Nov. 27, 1951 [Dec. 21, 1950], No. 31094/50. Class 97 (i). [Also in Group XIX] In apparatus for projecting optically the profile of an article, the article is illuminated by high-pressure discharge lamps, the light passing between spaced parallel plates apertured to receive the article. In the form shown, the article 15, such as a turbine blade, passes through holes 22a, 23a in plates 22, 23, separated by spacers 24. The plate 23 carries a light-shielding flange 27 passing a hole in the rear wall 29 of the surrounding lamp casing. The plate 22 carries a tube 26 within a tube 16 secured to the front wall 18 of the casing and by which the casing is located on the extension 17 of the objective mounting 13. The lamps 19, for example four in number, equally spaced, are mounted on the wall 18, and are adjustable, relatively to the plates 22, 23, by sliding the tube 26 within the tube 16. The lamp casing has holes top and bottom for air cooling. The bottom holes are light trapped by a baffle 52 and those at the top by a bent chimney 30. The holder 14, for the object 15, provides centring and axial adjustments. The lamp casing may contain reflectors to direct light emitted outwardly by the lamps into the space between the plates.
Patent GB-505575-A (GB)
Title: Improvements in or relating to speed-indicating means for use in printing-telegraph apparatus
IPC: H04L25/04
Filed: 1937-11-12
Abstract: 505,575. Synchronism indicators. CREED & CO., Ltd., and THOMPSON, A. E. Nov. 12, 1937, No. 31153. [Class 40 (iii)] Signals from a transmitting source A of constant speed at a central station are received over a telegraphic channel 21 and used to give an indication when apparatus is rotating at correct speed. The signals energize a lamp 7 which illuminates marks on rotating drums 13, 14. The signals are a continuous repetition of a teleprinter code, substantially in the form of a series of reversals of marking and spacing. A plug, 16, 17 is inserted in a jack 18, 19, 20 in the line 21 to connect a transformer, the secondary 23 of which is connected to a flexible cable 12 leading to the lamp in a casing, Fig. 1 (not shown). A shaft 1 is mounted in bearings in the casing and protrudes from it to be rotated by the apparatus under test. A worm 3 on the shaft meshes with two gears 8, 9 and rotates them at different speeds. One of the drums is attached to each of the gears, and, at synchronism, equally spaced marks on the periphery of one drum appear to move in the opposite direction to similar marks on the other drum, when viewed through an aper. ture in the casing.
Patent GB-690645-A (GB)
Title: Improvements in or relating to suction nozzles for vacuum cleaners and to brushes applicable thereto
IPC: A47L9/06
Filed: 1950-12-22
Abstract: 690,645. Vacuum cleaner brushes. ELECTROLUX, Ltd. Dec. 22, 1950 [Dec. 22, 1949], No. 31228/50. Class 19. [Also in Group XXVIII] A suction nozzle for a vacuum cleaner (see Group XXVIII) has a removable brush adapted to be inserted between the ribs 14, 15 of the nozzle or between a rib and the side of the nozzle. The brush has two rows of bristles 24 and a flange 25 having projections 27 at its end which engage behind the edges 19, 20 of the ribs for securing the brush.
Patent GB-1068888-A (GB)
Title: Method of making di- and tri methylolalkanoic acids
IPC: C07C45/75
Filed: 1964-08-04
Abstract: Di- and trimethylolalkanoic acids particularly dimethylolalkanoic acids containing 5 to 7 carbon atoms and trimethylolacetic acid, are prepared by oxidizing at least one a ,a -dimethylolalkanol (5-7 C) or trimethylolethanol with hydrogen peroxide in an aqueous medium maintained at a pH between 3 and 9 at 40 DEG  C. to boiling until the mixture is free of peroxide. A mol. ratio of hydrogen peroxide to polymethylolalkanol of between 0.4 and 1 is used, and hydrogen peroxide solutions of conc. below 55% are preferred.  The reaction products may be purified from metal ions by treatment with a cation exchange resin.  Examples describe the preparation of dimethylol propionic acid, dimethylolbutyric acid, dimethylolvaleric acid, and trimethylolacetic acid.  The dimethylolalkanols may be prepared by condensing two aldehydes in the presence of an alkaline catalyst such as an alkali metal carbonate, hydroxide, alkaline earth metal hydroxide on a strongly basic anion exchange resin, and the examples describe the preparation of dimethylolpropanol, dimethylolbutanol, dimethylolpentanol.
Patent GB-604016-A (GB)
Title: Improvements in or relating to tea trolleys
IPC: A47B31/00
Filed: 1945-11-20
Abstract: 604,016. Tea trollies. QUICKFOR, Ltd., and LOEWENTHAL, W. Nov. 20, 1945, No. 31264. [Class 52(iii)] A tea trolley comprises castor members 2 each provided with an upright rod 3 screw threaded at the upper end thereof to receive a clamping nut 8 and enclosed within tubes 5, 7, being axially mounted with respect thereto by means of spacers 4, 6, which are flanged to support tubes 5, 7, and bored to slide over the rods 3. Trays 1, 11 are apertured at each corner are provided. The corners of the upper tray may be dished to receive the heads of nuts 8. Specification 361,781 is referred to.
Patent GB-1534788-A (GB)
Title: Tuyeres for smelting shaft furnaces
IPC: C21B7/16
Filed: 1976-07-27
Abstract: 1534788 Tuyeres burners CREUSOT-LOIRE 27 July 1976 [14 Aug 1975 21 Oct 1975] 31319/76 Heading F4B and F4T In a blast furnace tuyere comprising three concentric conduits 5, 7 and 8, hot blast is fed through the central conduit 5, an unheated oxidizing gas, such as oxygen-enriched air, oxygen and water vapour, oxygen and carbon dioxide, or pure oxygen, is fed through the intermediate conduit, and a fluid or emulsion containing hydrocarbons is fed through the outer conduit. Powdered chalk or limestone may also be introduced into the blast furnace in suspension in the oxidizing gas flow, if required for slagging purposes. As shown in Fig. 1 cold pure oxygen is introduced tangentially into the intermediate conduit through an inlet 19, and hydrocarbon fluid tangentially into the outer conduit through inlet 20. The central conduit is of stainless steel, lined with a layer of cast refractory concrete 6, the intermediate conduit 7 of copper and the outer conduit 8 of steel. Hot blast is supplied to the central conduit 5 through a pipe 13. The ends of conduits 5, 7 and 8 project different distances into the blast furnace. When the delivery of oxidizing gas or hydrocarbons is interrupted, a scavenging blast of air, nitrogen or water vapour may be blown into the tuyere.  In the alternative embodiment shown in Fig. 3 the inner surface of intermediate conduit 24 comprises a cylindrical portion 26 followed by a convergent section 27, a throat 28 and a divergent section 29, said conduit 24 also being provided with a ring of oblique passages 30 which open at 31 into the divergent section 29 a small distance from the throat 28 so that part of the hydrocarbon flow is atomized in the oxidizing gas stream just before it leaves the tuyere. The other conduit 32 terminates in a converging portion 35.
Patent GB-816243-A (GB)
Title: Improvements in or relating to elements for forming floor covering or the like
IPC: E04F13/12
Filed: 1956-10-16
Abstract: 816,243. Metal sheets. SEBY, C. J. Oct. 16, 1956, No. 31451/56. Class 20(2) A metal sheet adapted to interlock with other sheets to form floors &c. is provided at one edge with an arcuate projection 6 and at its opposite edge with a complementary channel defined by a semi-circular bead 4 and a concentric arcuate strip 5. The projection 6 has a thinner part 8 adjacent its free edge. Both the projection 6 and the channel may deviate slightly from a true circular arc.
Patent GB-961960-A (GB)
Title: Novel derivatives of trimellitic anhydride
IPC: C07C69/767
Filed: 1960-09-13
Abstract: The invention comprises 4-vinyl trimellitate and 4-vinyl trimellitic anhydride and a process for their preparation by reacting trimellitic anhydride with vinyl acetate at about 0-100 DEG C. in the presence of a catalytic amount of a mercuric salt of a mineral acid to give the anhydride, and treating the anhydride with sufficient water to form the vinyl trimellitate. The reaction may be carried out using an excess of vinyl acetate as solvent or in an organic solvent such as acetone, and copper resinate may be present as a polymerization inhibitor.  Examples are given. Reference is made also to the reaction of trimellitic acid and vinyl acetate to form a mixture of mono-, di- and tri-vinyl isomers.ALSO:Polymers are prepared from 4-vinyltrimellitic anhydride and 4-vinyltrimellitate (see Division C2). Polymerization may be effected in bulk or in a solvent in the presence of a catalyst. Other polymerizable substances may be present, e.g. vinyl acetate or acrylonitrile.  Water-soluble polymers are obtainable from 4-vinyltrimellitate. The polymers may be reacted with glycols or epoxides to produce unsaturated polyesters. In the examples (1) 4-vinyltrimellitic anhydride is polymerized in the presence of tert.-butyl peroxide; solutions of the product in dimethyl formamide yield continuous films; (2) the product of example 1 is mixed with ethylene glycol and baked at 140 DEG C. to yield a hard film insoluble in dimethyl formamide; (3) 4-vinyltrimellitic anhydride is polymerized in dioxane in the presence of benzoyl peroxide; (4) 4-vinyltrimellitate is polymerized in aqueous solution in the presence of potassium persulphate or (Example 5) potassium persulphate and sodium bisulphate; (6) the product of Example 5 is converted into a water-soluble film; (7) ethylene glycol is dissolved in the product of Example 5 and the mixture is baked at 170 DEG C. to yield a water-insoluble film.
Patent GB-512043-A (GB)
Title: Improvements in loud speaker telephone installations
IPC: H04M9/08
Filed: 1937-11-16
Abstract: 512,043. Substation equipment. INTERNATIONALE TELEPHONLAUT-SPRECHER GES. Nov. 16, 1937, Nos. 31501 and 31502. Void. Convention dates, Nov. 24, 1936, and Jan. 29, 1937. [Class 40 (iv)] In a telephone substation having a sensitive microphone 15 and loudspeaker 10 with separate transmitting and receiving amplifiers in addition to the usual hand-set, acoustic retroaction is minimized by leaving the hand-set permanently in circuit so that corresponding instruments are in shunt and by the provision of a step-up transformer 71 between the transmitting amplificr and the usual output transformer 11. The effect is improved by condensers 22, 23 associated with the amplifiers, 23 being very much larger than 22. The secondary of the transformer 71 is shunted by a condenser 72. The microphone 15 is adjustably mounted on a stand 80 adjacent to the loudspeaker 10, and the latter is provided with a cradle 84 on which the hand-set 85 may be placed facing the same direction as the loudspeaker. The switch 17 which connects up the amplifiers. is closed and opened manually by buttons 88, 89 through a rocking-lever 90 or automatically by the movement of the cradle 84. The lever 90 is held by a spring when operated by the button 88, but is released if the cradle 84 is subsequently depressed by the weight of the hand-set, so that the switch 17 is opened when the hand-set is removed without operation of the button 89. A lamp 95 may indicate the closure of the switch 17. The apparatus may thus be used with the hand-set on the cradle 84 or held in the hand.
Patent GB-385401-A (GB)
Title: Process for the production of a non-poisonous town gas
IPC: C10K3/04
Filed: 1931-11-13
Abstract: 385,401. Gaseous mixtures. COHN, H., 22, Friedrich- Wilhelmstrasse, Berlin. Nov. 13, 1931, No. 31502. Convention date, Feb. 4, 1931. [Class 55 (ii).] In the production of a carbon monoxide-free combustible gas of heating value, specific gravity and speed of ignition corresponding to ordinary town gas, a low grade gas is chosen initially so that after removal of its sulphur impurities, carbon monoxide, and a part of its carbon dioxide, a gas of the desired properties is obtained. A suitable gas may be produced by operating a water gas generator at a temperature of 600-750‹ C. The carbon dioxide may be removed before or after the removal of carbon monoxide by a methane catalysis- Specification 366,563 is referred to.
Patent GB-281299-A (GB)
Title: Improvements in or relating to amplifying arrangements for telephone lines
IPC: H04B3/20
Filed: 1927-11-23
Abstract: 281,299. Siemens & Halske Akt.- Ges. Nov. 24, 1926, [Convention date]. Repeating and amplifying systems.-A pair of amplifiers r1, r2 are connected differentially to a common output transformer, the windings s1, s2 of the input transformer being arranged to control the grids in counter-phase. The arrival of speech currents or of a special signal current through the medium of a rectifier g disables the amplifier r2, and thereby renders the amplifier r1 effective in a manner which is independent of the strength of the initial incoming current. In Fig. 2, the rectifier g is connected directly to the input circuit, while in Fig. 3 it is fed through the amplifiers and a transformer t3. In a two-way system, the rectifier g may also disable the return path. Each amplifier may be replaced by a group of amplifiers.
Patent GB-893414-A (GB)
Title: Improvements in pneumatic tyres
IPC: B60C11/01
Filed: 1959-09-16
Abstract: 893,414. Tyre treads. DUNLOP RUBBER CO. Ltd. Sept. 16, 1959 [Sept. 23, 1958], No. 31536/59. Class 144 (2). A pneumatic tyre tread 1 comprises a central groundcontacting surface of transversely smooth convex curvature flanked on each side by a shoulder region 3 comprising at least a pair of side-by-side circumferential ribs 4, 5 or rows of blocks, or one of each, each rib or row having lateral projections 4a, 5a, respectively, which extend towards corresponding indentations 5b, 4b in the other, and the ground-contacting surface of the rib or row of blocks nearer the sidewall 2 in each shoulder lying either radially inwardly or outwardly of the line of curvature of the smoothly-curved central portion. For singletrack vehicles, such as motor-cycles, the rib 4 (or row of blocks) immediately adjacent the sidewall 2 lies radially outwardly, whereas for double-track vehicles it lies radially inwardly as shown. The pair of ribs or rows may be bridged as at 10b and the axially inner rib 5 (or row of blocks) may be connected to the smoothly curved crown by bridging-portions 10. The projections of the ribs or rows of blocks may be irregularly spaced to reduce running noise, and stepped or shouldered formations may be provided on the radially outer surface of a rib or row. Notches and/or knife cuts may be provided in a rib or row to improve road grip. Three such side-by-side circumferential ribs or rows of blocks may be provided in each shoulder, the radial height thereof successively increasing from the sidewall towards the crown.