baber/WOPTO huggingface dataset:
Patent GB-113085-A (GB)
Title: Improvements in Loose Leaf Ledgers or Books.
Inventor: SANDERS ANNE WILLEM
IPC: B42F13/20
Filed: 1917-10-11
Abstract: 113,085. Sanders, A. W. Jan. 27, 1917, [Convention date]. Claw and like files.-In a loose-leaf ledger in which the leaves are filed on rings a adapted to be opened on pivots b, a supporting part f is provided for the lower leaves to prevent frictional contact between them and the outer sides of the rings.
Patent GB-1509566-A (GB)
Title: Waveform generating circuit
IPC: H03K6/00
Filed: 1975-04-10
Abstract: 1509566 Cathode-ray-tube circuits RCA CORPORATION 10 April 1975 [29 Nov 1974] 14745/75 Headings H4T and H3T A known bridge circuit, Fig. 1, producing an approximately parabolic current waveform in a load impedance such as the convergence coil 19 of a multigun colour cathode-ray-tube when supplied with a sawtooth voltage from deflection generator 10 is modified to produce a waveform which more closely approximates to a parabola. In the operation of the known arrangement of Fig. 1, an input sawtooth voltage 30 (Fig. 5a) causes a current having the form shown in Fig. 5b to flow in coil 19 when the diodes 15-18 are of the germanium type (barrier height of about 0À3 V) and a current having the shape shown in Fig. 5c when the diodes are of the silicon type (barrier height of about 0À7V). Fig. 2, shows a first embodiment according to the invention in which the diodes 15 and 17 are of the germanium type and the diodes 16 and 18 of the silicon type the latter being respectively shunted by the series arrangement of an adjustable resistor 25 and respective germanium diodes 23 and 24. Because the different type diodes conduct at different voltage levels a number of current breakpoints are produced, the current having the waveform shown in Fig. 5d with resistor 25 set to one value and the waveform shown in Fig. 5e with resistor 25 set to a lower value both of which waveforms approximate more closely to a parabola than the waveform of either Fig. 5b or Fig. 5c. Fig. 3 shows a second embodiment which, by replacing resistor 25 of Fig. 2 by two resistors 26, 27 allows the position of the breakpoints on either side of To to be adjusted differently. In this embodiment diodes 15-18 are germanium and diodes 23, 24 silicon. In a third embodiment, Fig. 4, in which the diodes 15-18 are germanium a silicon diode 28 shunted by an adjustable resistor 29 is connected in series with the load 19. This arrangement allows the same number of breakpoints to be produced as in the embodiments of Figs. 2 and 3 whilst using only one additional diode. In all of the embodiments the diodes 15 and 17 may be removed if the losses across resistors 21, 22 can be accepted without impairing the waveshaping action. The bridge circuit may be connected in series with deflection coils.
Patent GB-544233-A (GB)
Title: Improvements in and connected with fuel injection pumps for internal combustion engines
IPC: F02M59/28
Filed: 1940-10-01
Abstract: 544,233. Fuel injection pumps. DAIMLERBENZ. AKT.-GES. Oct. 1, 1940, No. 14759. Convention date, Oct. 2, 1939. [Class 102 (i)] [Also in Group XXIV] In a multi-cylinder fuel injection pump in which the pistons are rotatable relative to their cylinders to control the fuel injected at each stroke, and in which individual adjustment means for each piston is provided by toothed sleeves adjustable along a common regulating rod, there is a finely adjustable and stepless rotary adjustment of the sleeves along the rod. In the form shown in Fig. 2, the sleeve 4 is screwed on the rod 5 and is formed on a portion of its circumference with a worm segment 3 to mesh with a worm wheel or helical gear 2 on the piston 1. Opposite the worm teeth 3 the sleeve is formed with an elongated circumferential slot 7, 8 which is perpendicular to the axis of the rod 5 or is inclined to correspond with the pitch of the screwthreads on the rod. A cheese-headed screw 6 passes through the slot and screws into the rod, its head pressing on the step between the parts 7, 8 of the slot. In the form shown in Fig. 4, the sleeve 4<SP>1</SP> slides along the rod 5 and is fixed in position by a grub screw 10, the part 11 of which engages a groove 12 cut in the rod perpendicular or oblique to the axis of the rod. There may be three grub screws to increase the range of adjustment.
Patent GB-190437-A (GB)
Title: Apparatus for the treatment of leather, hides and other materials
IPC: C14B1/00
Filed: 1922-05-25
Abstract: 190,437. Turner Tanning Machinery Co. (France). Dec. 13, 1921, [Convention date]. Disinfecting. - The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of the vacuum treating- apparatus hereinafter described for the disinfecting of leather, hides, &c., but such use is not specifically referred to in the Specification as accepted. The apparatus comprises a tank a, Fig. 1, in which the liquor to 'be used in the treatment is automatically raised to a required temperature, and a cylindrical vessel f, arranged either horizontally or vertically, and provided with suitably-controlled connections to a vacuum pump j and to the tank a containing the heated liquor; the temperature of the liquor is controlled by a thermostatic valve through which steam for heating-devices c is supplied; the materials to be treated are charged into the vessel f between perforated partitions p, p<1>, and the vessel is then exhausted and afterwards .charged with the already heated liquor by opening a valve h in a pipe g depending from the lower part of the vessel and opening in the tank a; when filled with liquor, the cock h is closed and the vacuum maintained during the process of digestion. As shown, the cover i of the vessel f is provided with view-holes n, n<1>, and is supported by means of an adjustable link w, Fig. 3, upon a rotatable bracket z, the supporting-plate v being slotted to provide a lateral adjustment; for sealing, the end of the cylinder enters a groove on the cover, into which is fitted a suitable soft packing, the cover is secured by nuts o, and to limit the pressure on the packing, adjustable abutments m, Figs. 5 and 6, for the cover are provided on the cylinder; the abutments comprise eccentrically-mounted circular stop-pieces m, which when adjusted in position are locked by nuts m<2>. When the cylinder f is arranged vertically, the cover i takes the form of a lid to which is attached the upper perforated plate and which is raised by a hand-wheel constituting a nut working on the supporting-link w.
Patent GB-239935-A (GB)
Title: Improvements in and connected with telephone receivers and the like
IPC: H04R7/12
Filed: 1924-06-18
Abstract: 239,935. Palmer, W. J. June 18, 1924. Magnetic instruments; diaphragms.-A telephone receiver or hornless loud-speaker is constructed with a large dished diaphragm of thin metal or alloy, preferably aluminium alloy of thickness between 0.001 and 0.003 of an inch, provided with an annular corrugation d<1> near its periphery where it is clamped between rings c supported by pillars b from a 'base-plate a all arranged in a casing. The convex side of the diaphragm is directed towards the electromagnets h which are mounted on a plate j adjustable to and from the base a, and a sheet-iron armature e is secured to the convex side of the diaphragm by a screw f. Cotton wool, swans down, &c. may be packed between the diaphragm and the base or an annular disc mounted on the pillars b. A guard of wire work or stamped metal which may be backed with fine gauze may be placed at the front of the casing.
Patent GB-363606-A (GB)
Title: Improvements in and relating to magnetic cores
IPC: H01F27/245
Filed: 1931-05-19
Abstract: 363,606. Inductances. B R I T I S H THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Boyajian, A. ; 6, Maplewood Avenue, Pittsfield, Massachusetts, U.S.A.) May 19, 1931, No. 14789. Convention date, May 21, 1930. [Class 37.] In reactor and like laminated cores, reluctance caused by imperfect fitting at joints in the magnetic circuit is reduced by providing a layer of magnetic cement 18 between the abutting surfaces. The cement comprises iron powder or filings mixed with Portland cement and water or alcohol. Slots 16 may be formed in the ends of the yokes for engagement by the clamping members used in drawing the yokes tightly down on to the end faces of the limbs.
Patent GB-999917-A (GB)
Title: Multiple parameter eddy current non-destructive testing device
IPC: G01N27/02
Filed: 1963-04-16
Abstract: 999,917. Determining physical qualities and dimensions. UNITED STATES ATOMIC ENERGY COMMISSION. April 16, 1963, [Sept. 28, 1962], No. 14810/63. Heading G1N. The output of the search coil of an eddy current testing device the transmit coil of which is fed with more than two superposed currents each of which is an orthogonal function of time in a Fouriers series, is analyzed to give a number of outputs which are then combined to give the values of different properties of the sample. In the embodiment of Fig. 3 a crystal oscillator 50 produces an output at 100 kc/s which is fed to amplifier 66 through comparator 54 and isolation amplifier 56. The output of oscillator 50 is also used to synchronise a frequency divider 58 which supplies a 10 kc/s signal through comparator 62 and amplifier 64 to amplifier 66. The power amplifer 66 supplies test coils 14 and 12 which induce eddy currents in a sample 24 and a reference sample 22 which in turn induce opposed voltages in the coils connected to null balance device 68 which is set to produce zero output when the samples 22, 24 are identical. The output of balance device 68 is amplified at 70 and filtered at 72 and 74 so that the 10 kc/s and the 100 kc/s components are fed to phase amplitude comparators 62 and 54 respectively which measure the amplitudes of the component of the signal in phase and of the component 90 degrees out of phase with the original signals to give outputs C30, C32, C34 and C38 which represent a Fourier expansion of the output signal. If the variation of sample 24 from reference sample 22 is sufficiently small the variations will be linearly related to the physical characteristics of the sample and by using the circuit of Fig. 2 these may be evaluated. As shown the outputs C30-C36 are amplified at 38 and inverted at 40 before being applied to potentiometers 44. The outputs 48 representing the physical characteristics are linear combinations of the outputs of amplifiers 38 the potentiometers 44 respresenting the coefficients and the switches 42 being used to select the sign of the coefficient. Summing amplifiers 46 add the terms to produce the final outputs at 48. It is stated that other forms of analysis may be used in place of Fourier analysis and mention is made of the use of an orthonormal filter in conjunction with a time reversal device which changes a signal which decays with time to one which increases with time. Other characteristics of the signal which may be used are integrals, differential coefficients and the amplitude at various times. It is also stated that amplifiers 38 (Fig. 2) may be non-linear to compensate for non-linear variations of the signal with respect to sample characteristics. It is also stated that an automatic gain control may be incorporated in amplifier 18 (Fig. 1) to remove the effect of the spacing between the coils and the sample. The apparatus may measure probe to sample spacing. Specification 987,959 is referred to.
Patent GB-1459632-A (GB)
Title: Converter for the purification of exhaust gases
IPC: B01J23/72
Filed: 1974-04-03
Abstract: 1459632 Treating exhaust gases TOYOTA CHUG KENKYUSHO KK 3 April 1974 [3 April 1973] 14811/74 Heading C1A [Also in Division B1] Nitrogen oxides in exhaust gases from I.C. engines are reduced by successive contact in a catalytic converter with (i) a first catalyst layer having a sintered body structure and consisting of a particulate mixture of (a) nickel oxide and copper oxide; (b) manganese oxide and one or more of cerium oxide, lanthanum oxide, iron oxide, niobium oxide or nickel oxide; or (c) cobalt oxide and niobium oxide and/or yttrium oxide, and (ii) a second layer comprising platinum, platinum-rhodium, platinum-palladium or nickel oxide-chromium oxide-copper oxide-iron oxide-barium oxide. A further catalyst layer comprising copper and/or copper oxide and, optionally, lanthanum and/or cerium oxide may be situated upstream of the first layer. The layers may be situated in a single internally divided vessel or in separate reactors connected by piping.
Patent GB-798172-A (GB)
Title: Apparatus for wet spinning artificial filaments
IPC: D01D5/06
Filed: 1956-05-11
Abstract: <PICT:0798172/IV (a)/1> The apparatus of the parent Specification (wherein viscose is extruded through a spinning nozzle which is immersed in a coagulating bath and the filaments are drawn through a straight tube which is immersed in the bath, the inlet of the tube being at most 3 cm. distance from the nozzle and the axis of the tube being in line with the centre of the nozzle and with the take-up position on a winding device by means of which the filaments are drawn through the tube) is modified in that the spinning nozzle is a spinneret mounted in a housing so that the face of the spinneret forms a continuous, substantially flat surface with the face of the housing, the face of the housing extending radially from the periphery of the spinneret face for an appreciable distance, which is preferably at least equal to the diameter of the spinneret.  As shown, the apparatus of the parent Specification is modified by fitting over the spinneret end of the coupling 11 an annular adapter cap 18 of polyethylene or similar plastic material to complete the housing for the spinneret.  The cap 18 encircles the spinneret and has a face 181 forming a continuous flat surface with the face of the spinneret.  The flared inlet of the glass spinning tube used according to the parent Specification is replaced by an inlet member 21 of moulded plastic adapted to fit snugly over the end of the constant diameter straight glass tube 20.  A plastic set-screw 22 holds the inlet member 21 in place. The inlet member 21 has a flat face and the axial cylindrical passage through it has the same diameter as the tube 20, but the passage is so flared that its radius of curvature at its entrance is 0.4 to 1.6 times the diameter of the passage.  The distance d should not exceed the internal diameter of the tube 20 and should not, in any case, exceed 3 cm.  The length of the tube 20 is usually 8-50 inches and its inside diameter about 7-15 millimetres.  The external diameter of the portion of the inlet 21 next to the cap 18 of the spinneret housing is at least equal to the diameter of the cap and preferably greater.  The apparatus may be used for the wet-spinning of solutions other than viscose. Specifications 652,741, 652,746, 654,083 and 741,727 are referred to.
Patent GB-1318849-A (GB)
Title: Sliced cheese product and method for treatment thereof
IPC: A23C19/16
Filed: 1972-03-29
Abstract: 1318849 Cheese slices KRAFTCO CORP 29 March 1972 [29 April 1971] 14863/72 Heading A2B A plurality of cheese slices are stacked in face-to-face relationship, a thin film of hydrated hydrocolloid being interposed between adjacent slices, for example by spraying, so that the slices may readily be separated. Suitable hydrocolloids include starches, and vegetable, marine, or cellulose gums.
Patent GB-1531775-A (GB)
Title: Gas flotation dewatering of waste water treatment wastes
IPC: C02F1/24
Filed: 1976-04-12
Abstract: 1531775 Dewatering sludges and skimmings by gas flotation SWIFT & CO 12 April 1976 [16 April 1975] 14868/76 Heading C1C Waste water treatment wastes (i.e. sludges and skimmings from settling and activated sludge processes) are dewatered by introducing the wastes into a vertical treatment column through an inlet below the surface of the wastes in the column, deflecting the flow of wastes from the inlet to spread the freshly introduced wastes in the column, introducing a polymer flocculant into the column below the inlet for the wastes, introducing or generating bubbles in the column to establish a dense concentration of small gas bubbles in the wastes so that the gas bubbles contact and form buoyant composites with impurities within the wastes, maintaining the buoyant composites in the column so that they are dewatered by further small gas bubbles rising within the column to displace water from said buoyant composites and to form an upper stratum having a relatively high impurities content above a lower stratum of substantially clarified water, and withdrawing the substantially clarified waste at a location below the lowest point of generation or introduction of the bubbles.
Patent GB-243258-A (GB)
Title: Improved liquid-level indicator
IPC: G01F23/16
Filed: 1925-06-08
Abstract: 243,258. Dubreuil, G., and Dubreuil, L. Nov. 29, 1924, [Convention date]. Indicators actuated by pressure of head of liquid. -In a liquid level indicator of the type in which the pressure due to head of liquid is transmitted through an air tube to a manometer, a narrow tube 6 connects the manometer 5 with the liquid tank 1, and passes upwards through a larger depending tube 3. The tube 3 is enlarged at 4 so that the varying level in the. tube due to varying head of liquid in the tank is confined to the enlarged part. To prevent condensation of vapour, e.g. petrol, in the tube 6, the upper end of this tube is formed as in Fig. 2. The tube 6 is secured to a hood 16 by means of a member 13 having a very small opening 15 which prevents mixing of the petrol vapour in the tube 3 with the air in the tube 6. The apparatus may be brought into correct working condition by unscrewing the cap 12 carrying the tube 3, withdrawing it, and replacing it.
Patent GB-554920-A (GB)
Title: Improvements in or relating to flexible abrasive articles, for example sandpaper, and method of making the same
IPC: B24D11/00
Filed: 1941-07-21
Abstract: 554,920. Abrasive articles. STEVENS, A. H. (Minnesota Mining & Manufacturing Co.). July 21, 1941, No. 14906/42. Divided out of 557,773. [Class 2 (iii)] [Also in Group XXIII] In a flexible abrasive article such as sandpaper, the abrasive grains are bonded with a polymerized ester of an alkyl substituted acrylic acid, e.g. methyl, ethyl, n-propyl, isopropyl, n-butyl or isobutyl methacrylates or ethacrylates. Copolymers of the acrylates or of an acrylate monomer and a monomer or partial polymer of vinyl esters or acetals, olefine polysulphides and butadiene derivatives may be used. There may also be added vinyl chloride-acetate copolymers, chlorinated rubber, cellulose nitrate, rosin, phenol-aldehyde or coumarone-indene resins and chlorinated diphenyl, plasticizers, e.g. dibutyl phthalate, dicyclohexyl phthalate,dibutoxyethyl phthalate, dibutoxyethoxyethyl phthalate, triethylene glycol dihexoate, secondary alcohol carbamates and methyl abietate, solvents, e.g. "Cellosolve" (R.T.M.) esters, ketones, ethers and chlorinated hydrocarbons. Specification 374,436 is referred to.
Patent GB-703987-A (GB)
Title: Improvements in or relating to the alkylation of aromatic hydrocarbons
IPC: C07C2/72
Filed: 1950-06-15
Abstract: A continuous process for the production of aromatic alkylates comprises subjecting toluene and an olefine of at least ten carbon atoms to alkylation conditions in the presence of sulphuric acid as catalyst, distilling from the product a fraction containing unreacted olefine and a light alkylate having, in the molecule, a side chain of up to 6 carbon atoms and recycling at least part of this fraction to the alkylation stage.  Preferably unreacted toluene is also recycled to the alkylation stage.  The preferred olefine is a liquid polymer of propylene especially the tetramer and the molar ratio of toluene/tetramer in the total feed to the alkylation zone is preferably maintained above 1.5:1 whilst the fraction recycled to the alkylation stage should preferably have a boiling point within the range 114-270 DEG C.  It is preferred to use a molar ratio of fresh tetramer feed/recycled tetramer of about 5:1.  In an example fresh toluene and propylene tetramer are reacted at 5 DEG C. in the presence of sulphuric acid, recycle tetramer and light alkylate, and recycle toluene.  The product is allowed to settle and the hydrocarbon fraction washed with strong sulphuric acid, water (twice), and caustic soda solution and the washed product is then distilled to recover toluene which is recycled to the alkylation zone.  The residue is then fed to a second column operated at a column head temperature of 270 DEG C. and under a reflux ratio of 0.5:1 to yield an overhead fraction comprising tetramer and light alkylate and a part of this fraction is recycled to the alkylation reactor while the desired alkylate is removed as bottoms. Specification 656,834 (as open to inspection under Sect. 91) is referred to.  The Provisional Specification refers to the alkylation of any aromatic hydrocarbon, preferably toluene, with an olefine of at least six carbon atoms.
Patent GB-272234-A (GB)
IPC: H01F29/04
Filed: 1927-06-07
Abstract: 272,234. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Peters, J. F.). June 7, 1926, [Convention date]. Regulating transformers.-In order to reduce the number of tapping points necessary to obtain a particular number of ratios in a variable ratio transformer, the tapped winding 3 is subdivided into sections 13, 14, 15, 21 having a standard number of turns, for example a number corresponding to a five per cent variation, and a section 19 having one half, one and one half, or some other odd multiple of half the standard number of turns, the sections being connected through switch contacts 24 - - 31 in such a manner as to enable the section 19 to be utilized in different combinations with the sections 13, 14, 15, 21 thereby obtaining two and one half per cent variations in the active number of turns in the case of five per cent standard sections. An alternative arrangement is described in which tab section 19 has two and one half times the standard number of turns, and one of the other sections has twice the standard number of turns.
Patent GB-528835-A (GB)
Title: Improvements in or relating to fire engines
IPC: A62C27/00
Filed: 1939-05-19
Abstract: 528,835. Fire-engines. A.C. (ACEDES) CARS, Ltd., and SIDNEY, E. H. May 19, 1939, No. 14987. [Class 47 (ii)] A fire-engine is constructed with the pumping engine and pump unit d mounted transversely of the chassis a and with the crankshaft also disposed transversely of the chassis. The construction comprises the usual engine b, and driver's cab c, an enclosed compartment e for the firemen immediately behind the cab, storage cupboards f with lift-up.slide-in doors g on each side of the vehicle, and a water tank h, while to the rear of the pumping engine and pump unit d the chassis supports a structure i within which are side and rear storage lockers j, k, and on the top of which is mounted a hose reel l. The structure also carries a support m for ladders n, the forward ends of which are supported by a mounting o on the roof p. The lower sides of the chassis are provided with cupboards q to store the suction hose of the pumping unit when not in use.